/* Color Variables */
:root {
    --primary-color: #ffffff;
    --accent-color: #e0e0e0;
    --text-color: #e0e0e0;
    --light-gray: #1a1a1a;
    --white: #ffffff;
    --black: #000000;
    --border-color: #333333;
}

/* Body */
body {
    background: var(--black);
    color: var(--white);
}

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

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 30px 0;
    transition: all 0.3s ease;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header.scrolled {
    padding: 20px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.5);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo img {
    height: 60px;
    transition: all 0.3s ease;
}

.logo .logo-color {
    display: none;
}

.logo .logo-white {
    display: block;
}

.logo h1 {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--white);
    line-height: 1.4;
}

.logo h1 span {
    font-size: 1.8rem;
    font-weight: 900;
    display: block;
    margin-top: 5px;
    letter-spacing: 0.05em;
}

.nav-list {
    display: flex;
    gap: 25px;
}

.nav-list a {
    color: var(--white);
    font-weight: 500;
    font-size: 1.4rem;
    position: relative;
    padding: 5px 0;
    letter-spacing: 0.05em;
    transition: color 0.3s ease;
}

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

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #FFD700 0%, #FF8C00 50%, #FF4500 100%);
    transition: width 0.3s ease;
}

.nav-list a:hover::after {
    width: 100%;
}

.nav-social-links {
    display: none;
}

.social-links {
    display: flex;
    gap: 20px;
}

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

.social-links a {
    color: var(--white);
    font-size: 1.8rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    background: transparent;
}

.social-links a:hover {
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    width: 30px;
    height: 24px;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--white);
    transition: all 0.3s ease;
    transform-origin: center;
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Icon styles - Font Awesome */
.social-links i {
    font-size: 1.6rem;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    background: var(--black);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 2;
    pointer-events: none;
}

.hero-images-grid {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    grid-template-rows: repeat(5, 1fr);
    gap: 10px;
    /* padding: 100px 60px 200px; */
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 2;
    pointer-events: none;
}

.hero-image-item {
    overflow: hidden;
    border-radius: 2px;
    opacity: 0.7;
    transition: all 0.5s ease;
}

/* .hero-image-item:hover {
    opacity: 1;
    z-index: 10;
    transform: scale(1.05);
} */

.hero-image-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

/* .hero-image-item:hover img {
    transform: scale(1.1);
} */

.hero-image-large {
    grid-column: span 2;
    grid-row: span 2;
}

.hero-image-pos-1 {
    grid-column: 1 / 3;
    grid-row: 1 / 3;
}

.hero-image-pos-2 {
    grid-column: 5 / 7;
    grid-row: 1 / 3;
}

.hero-image-pos-3 {
    grid-column: 3 / 5;
    grid-row: 4 / 6;
}

.hero-image-medium {
    grid-column: span 1;
    grid-row: span 2;
}

.hero-image-small {
    grid-column: span 1;
    grid-row: span 1;
}

.hero-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    text-align: center;
    color: var(--white);
    max-width: 900px;
    width: 100%;
    padding: 0 40px;
}

.hero-title {
    margin-bottom: 30px;
}

.sub-title {
    display: block;
    font-family: 'Montserrat', sans-serif;
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 0.2em;
    margin-bottom: 20px;
    opacity: 0.8;
    animation: fadeInDown 1s ease-out;
}

.main-title {
    display: block;
    font-size: 5rem;
    font-weight: 900;
    line-height: 1.4;
    letter-spacing: 0.05em;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-text {
    font-size: 3.2rem;
    font-weight: 600;
    line-height: 2;
    margin-bottom: 120px;
    color: var(--white);
    letter-spacing: 0.05em;
    animation: fadeInUp 1s ease-out 0.5s both;
    position: relative;
    z-index: 4;
}

.scroll-indicator {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    animation: fadeInUp 1s ease-out 0.6s both;
    z-index: 3;
}

.scroll-indicator span {
    font-size: 1.2rem;
    letter-spacing: 0.2em;
    font-weight: 500;
}

.scroll-line {
    width: 1px;
    height: 50px;
    background: var(--white);
    animation: scrollDown 2s ease-in-out infinite;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 0.8;
        transform: translateY(0);
    }
}

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

@keyframes scrollDown {
    0%, 100% {
        transform: translateY(0);
        opacity: 1;
    }
    50% {
        transform: translateY(20px);
        opacity: 0.3;
    }
}

/* Photo Banner */
.photo-banner {
    padding: 0;
    margin: 0;
}

.photo-banner-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}

.photo-banner-item {
    overflow: hidden;
    aspect-ratio: 1;
}

.photo-banner-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.photo-banner-item:hover img {
    transform: scale(1.1);
}

/* Section Common Styles */
.section {
    padding: 140px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: block;
    font-family: 'Montserrat', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: 0.3em;
    color: var(--white);
    text-transform: uppercase;
}

.section-title {
    font-size: 4.5rem;
    font-weight: 900;
    color: var(--white);
    position: relative;
    display: inline-block;
    letter-spacing: 0.05em;
    line-height: 1.4;
}

.section-title::after {
    display: none;
}

/* About Section */
.about-section {
    background: var(--white);
}

.about-section .section-label {
    color: var(--black);
}

.about-section .section-title {
    color: var(--black);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.about-info {
    margin-bottom: 100px;
}

.info-box {
    margin-bottom: 60px;
}

.info-box h3 {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 40px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
    color: var(--black);
    letter-spacing: 0.05em;
}

.info-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.info-label {
    font-size: 18px;
    font-weight: 700;
    color: var(--black);
    letter-spacing: 0.05em;
    min-width: 135px;
    flex-shrink: 0;
}

.info-value {
    font-size: 18px;
    color: #333333;
    line-height: 1.8;
}

.info-value-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px 30px;
}


.officer-role {
    font-size: 1.3rem;
    color: #666666;
    letter-spacing: 0.05em;
}

.officer-name {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--black);
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.officer-name > div {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--black);
}

.directors-box {
    margin-top: 50px;
    padding-top: 50px;
    border-top: 1px solid #e0e0e0;
    display: flex;
    align-items: flex-start;
    gap: 30px;
}

.directors-box h4 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0;
    color: var(--black);
    letter-spacing: 0.05em;
    flex-shrink: 0;
    min-width: 80px;
}

.directors-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.directors-list span {
    font-size: 1.5rem;
    color: var(--text-color);
    line-height: 1.8;
}

.directors-list span::after {
    content: '';
}

.about-text p {
    font-size: 1.8rem;
    line-height: 2;
    margin-bottom: 30px;
    color: var(--text-color);
}

.about-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
    margin-top: 0;
}

.feature-item {
    text-align: left;
    padding: 0;
    transition: all 0.3s ease;
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    font-family: 'Montserrat', sans-serif;
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--white);
    letter-spacing: 0.05em;
}

.feature-item h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--white);
    letter-spacing: 0.05em;
    line-height: 1.5;
}

.feature-item p {
    font-size: 1.5rem;
    line-height: 2;
    color: var(--text-color);
    letter-spacing: 0.02em;
}

/* Greeting Section */
.greeting-section {
    position: relative;
    background: var(--black);
    overflow: hidden;
}

.greeting-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/greeting-bg.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    filter: blur(30px) brightness(0.2);
    transform: scale(1.2);
    z-index: 0;
}

.greeting-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1;
}

.greeting-section .container {
    position: relative;
    z-index: 2;
}

.greeting-section .section-header {
    position: relative;
    z-index: 2;
}

.greeting-content {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.greeting-text h3 {
    font-size: 2.4rem;
    font-weight: 700;
    margin-bottom: 50px;
    color: var(--white);
    letter-spacing: 0.05em;
}

.greeting-text p {
    font-size: 1.6rem;
    line-height: 2.2;
    margin-bottom: 30px;
    color: var(--text-color);
    letter-spacing: 0.02em;
}

.signature {
    margin-top: 50px;
    padding-top: 30px;
    border-top: 2px solid var(--border-color);
}

.signature .position {
    font-size: 1.4rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.signature .name {
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
}

/* Event Section */
.event-section {
    background: var(--black);
}

.event-content {
    max-width: 1200px;
    margin: 0 auto;
}

.event-hero {
    margin-bottom: 60px;
    overflow: hidden;
}

.event-hero img {
    width: 100%;
    height: auto;
    display: block;
}

.event-info {
    text-align: center;
}

.event-info h3 {
    font-size: 2.4rem;
    font-weight: 600;
    margin-bottom: 30px;
    color: var(--white);
    letter-spacing: 0.05em;
}

.event-info p {
    font-size: 1.6rem;
    line-height: 2.2;
    margin-bottom: 40px;
    color: var(--text-color);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    letter-spacing: 0.02em;
}

.event-gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.gallery-item {
    overflow: hidden;
    aspect-ratio: 1;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

/* Activity Section */
.activity-section {
    padding: 140px 0;
    background: var(--black);
}

.activity-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 60px;
}

.activity-item {
    transition: transform 0.3s ease;
}

.activity-item:hover {
    transform: translateY(-5px);
}

.activity-image {
    margin-bottom: 30px;
    overflow: hidden;
    aspect-ratio: 4/3;
}

.activity-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.activity-item:hover .activity-image img {
    transform: scale(1.05);
}

.activity-text h3 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--white);
    letter-spacing: 0.05em;
}

.activity-text p {
    font-size: 1.5rem;
    line-height: 2;
    color: var(--text-color);
    letter-spacing: 0.02em;
}

/* Button */
.btn {
    display: inline-block;
    padding: 18px 50px;
    font-size: 1.6rem;
    font-weight: 700;
    text-align: center;
    border-radius: 50px;
    transition: all 0.3s ease;
    letter-spacing: 0.05em;
}

.btn-primary {
    background: linear-gradient(135deg, #FFD700 0%, #FF8C00 50%, #FF4500 100%);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(255, 140, 0, 0.3);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding-right: 50px;
    min-width: 250px;
    width: auto;
}

.btn-primary::after {
    content: '→';
    font-size: 1.6rem;
    transition: transform 0.3s ease;
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #FFC700 0%, #FF7C00 50%, #FF3500 100%);
    color: var(--white);
    opacity: 1;
    box-shadow: 0 6px 20px rgba(255, 140, 0, 0.4);
    transform: translateY(-2px);
}

.btn-primary:hover::after {
    transform: translateY(-50%) translateX(5px);
}

.contact-section .btn-primary {
    background: linear-gradient(135deg, #FFD700 0%, #FF8C00 50%, #FF4500 100%);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(255, 140, 0, 0.3);
}

.contact-section .btn-primary:hover {
    background: linear-gradient(135deg, #FFC700 0%, #FF7C00 50%, #FF3500 100%);
    color: var(--white);
    border-color: transparent;
    box-shadow: 0 6px 20px rgba(255, 140, 0, 0.4);
    transform: translateY(-2px);
}

/* Contact Section */
.contact-section {
    background: #f8f8f8;
}

.contact-section .section-label {
    color: var(--black);
}

.contact-section .section-title {
    color: var(--black);
}

.contact-intro {
    text-align: center;
    font-size: 1.6rem;
    line-height: 2;
    margin-bottom: 60px;
    color: var(--light-gray);
}

.contact-form {
    max-width: 700px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 30px;
}

.form-group label {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 10px;
    color: var(--black);
}

.required {
    font-size: 1.2rem;
    font-weight: 500;
    color: #e74c3c;
    margin-left: 8px;
    padding: 2px 8px;
    background: rgba(231, 76, 60, 0.1);
    border-radius: 3px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    font-size: 1.6rem;
    border: 2px solid var(--border-color);
    border-radius: 5px;
    background: var(--white);
    color: var(--black);
    transition: all 0.3s ease;
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: rgba(0, 0, 0, 0.5);
}

.form-group textarea {
    resize: vertical;
}

.form-submit {
    text-align: center;
    margin-top: 40px;
}

.form-submit .btn {
    min-width: 250px;
    cursor: pointer;
    border: none;
}

/* Contact Form 7のnoteクラスのスタイル */
.contact-form .note,
.form-group .note {
    font-size: 1.4rem;
    color: var(--black);
}

/* Contact Form 7のボタンのボーダーを削除 */
.contact-form input[type="submit"],
.contact-form button[type="submit"],
.wpcf7-submit {
    border: none !important;
}

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

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.footer-logo {
    margin-bottom: 30px;
}

.footer-logo img {
    width: 250px;
    height: auto;
}

.footer-address {
    font-size: 1.4rem;
    line-height: 2;
    color: rgba(255, 255, 255, 0.8);
}

.footer-address p {
    margin-bottom: 5px;
}

.footer-social h4 {
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    margin-bottom: 20px;
    color: var(--white);
}

.footer .social-links a {
    color: var(--white);
}

.footer .social-links a:hover {
    color: rgba(255, 255, 255, 0.7);
}

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

.footer-bottom p {
    font-size: 1.3rem;
    opacity: 0.7;
}

/* Responsive */
@media screen and (max-width: 1024px) {
    .about-features {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .greeting-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .greeting-image {
        max-width: 400px;
        margin: 0 auto;
    }
}

/* Header Navigation - 900px breakpoint */
@media screen and (max-width: 900px) {
    .header-container {
        padding: 0 20px;
    }

    .nav {
        position: fixed;
        top: 121px;
        left: 0;
        width: 100%;
        background: rgba(0, 0, 0, 0.98);
        backdrop-filter: blur(10px);
        padding: 40px 0;
        display: block;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-20px);
        transition: opacity 0.3s ease, transform 0.3s ease, visibility 0.3s ease;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 30px;
    }

    .nav-list li {
        opacity: 0;
        transform: translateY(10px);
        transition: opacity 0.3s ease, transform 0.3s ease;
    }

    .nav.active .nav-list li {
        opacity: 1;
        transform: translateY(0);
    }

    .nav.active .nav-list li:nth-child(1) {
        transition-delay: 0.1s;
    }

    .nav.active .nav-list li:nth-child(2) {
        transition-delay: 0.15s;
    }

    .nav.active .nav-list li:nth-child(3) {
        transition-delay: 0.2s;
    }

    .nav.active .nav-list li:nth-child(4) {
        transition-delay: 0.25s;
    }

    .nav.active .nav-list li:nth-child(5) {
        transition-delay: 0.3s;
    }

    .nav-list a {
        font-size: 1.8rem;
    }

    .nav-social-links {
        display: flex;
        justify-content: center;
        gap: 20px;
        margin-top: 40px;
        padding-top: 40px;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        opacity: 0;
        transform: translateY(10px);
        transition: opacity 0.3s ease 0.3s, transform 0.3s ease 0.3s;
    }

    .nav.active .nav-social-links {
        opacity: 1;
        transform: translateY(0);
    }

    .nav-social-links a {
        color: var(--white);
        font-size: 2rem;
        transition: all 0.3s ease;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 50px;
        height: 50px;
        border-radius: 50%;
        border: 1px solid rgba(255, 255, 255, 0.3);
    }

    .nav-social-links a:hover {
        color: var(--white);
        background: rgba(255, 255, 255, 0.1);
        border-color: rgba(255, 255, 255, 0.5);
    }

    .header .social-links {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }
}

@media screen and (max-width: 768px) {
    .main-title {
        font-size: 3.5rem;
    }

    .hero-text {
        font-size: 2rem;
    }

    .hero-images-grid {
        grid-template-columns: repeat(3, 1fr);
        grid-template-rows: repeat(6, 1fr);
        gap: 8px;
        padding: 100px 20px 200px;
    }

    .hero-image-large {
        grid-column: span 2;
        grid-row: span 2;
    }

    .hero-image-medium {
        grid-column: span 1;
        grid-row: span 2;
    }

    .hero-image-small {
        grid-column: span 1;
        grid-row: span 1;
    }

    .section {
        padding: 80px 0;
    }

    .section-title {
        font-size: 3rem;
    }

    .section-header {
        margin-bottom: 50px;
    }

    .info-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 3px;
    }

    .info-label {
        min-width: auto;
    }

    .info-value-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .event-info h3 {
        font-size: 1.8rem;
    }

    .greeting-text h3 {
        margin-bottom: 30px;
    }

    .event-gallery {
        grid-template-columns: repeat(2, 1fr);
    }

    .activity-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .photo-banner-grid {
        grid-template-columns: repeat(2, 1fr);
    }



    .footer-content {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }
}

/* Sponsorship Page */
.page-hero {
    padding: 180px 0 100px;
    background: var(--black);
    text-align: center;
}

.page-title {
    font-size: 4.5rem;
    font-weight: 900;
    color: var(--white);
}

.sponsorship-section {
    background: var(--white);
    padding: 100px 0;
}

.sponsorship-content {
    max-width: 900px;
    margin: 0 auto;
}

.sponsorship-intro {
    margin-bottom: 60px;
}

.sponsorship-intro h2 {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
}

.sponsorship-intro p {
    font-size: 1.6rem;
    line-height: 2;
    color: #333333;
}

.sponsorship-download {
    margin-bottom: 60px;
    padding: 40px;
    background: #f8f8f8;
    border-radius: 8px;
}

.sponsorship-download h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 30px;
}

.download-links {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 30px;
    background: var(--black);
    color: var(--white);
    text-decoration: none;
    border-radius: 5px;
    font-size: 1.6rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-download:hover {
    background: #333333;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.btn-download i {
    font-size: 1.8rem;
}

.sponsorship-submit {
    margin-bottom: 60px;
}

.sponsorship-submit h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 40px;
    padding-bottom: 15px;
    border-bottom: 1px solid #e0e0e0;
}

.submit-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.submit-item {
    padding: 30px;
    background: #f8f8f8;
    border-radius: 8px;
}

.submit-item h4 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--black);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.submit-item h4 i {
    color: #FF4500;
    font-size: 2rem;
}

.submit-item p {
    font-size: 1.6rem;
    line-height: 2;
    color: #333333;
    margin-bottom: 15px;
}

.submit-item p:last-child {
    margin-bottom: 0;
}

.link-underline {
    color: #FF4500;
    text-decoration: underline;
    transition: color 0.3s ease;
}

.link-underline:hover {
    color: #FF8C00;
}

.submit-item .note {
    font-size: 1.4rem;
    color: #666666;
    margin-top: 10px;
}

.sponsorship-note {
    padding: 30px;
    background: #f8f8f8;
    border-radius: 8px;
    text-align: center;
}

.sponsorship-note p {
    font-size: 1.6rem;
    line-height: 2;
    color: #333333;
}

.sponsorship-note a {
    color: #FF4500;
    text-decoration: underline;
    transition: color 0.3s ease;
}

.sponsorship-note a:hover {
    color: #FF8C00;
}

@media screen and (max-width: 768px) {
    .page-hero {
        padding: 150px 0 80px;
    }

    .page-title {
        font-size: 3rem;
    }

    .sponsorship-section {
        padding: 80px 0;
    }

    .sponsorship-intro h2 {
        font-size: 2rem;
    }

    .sponsorship-intro p {
        font-size: 1.4rem;
    }

    .sponsorship-download {
        padding: 30px 20px;
    }

    .sponsorship-download h3 {
        font-size: 1.8rem;
    }

    .download-links {
        flex-direction: column;
    }

    .btn-download {
        width: 100%;
        justify-content: center;
    }

    .sponsorship-submit h3 {
        font-size: 1.8rem;
    }

    .submit-info {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .submit-item {
        padding: 25px 20px;
    }

    .submit-item h4 {
        font-size: 1.6rem;
    }

    .submit-item p {
        font-size: 1.4rem;
    }

    .sponsorship-note {
        padding: 25px 20px;
    }

    .sponsorship-note p {
        font-size: 1.4rem;
    }
}