:root {
        --primary-color: #ff0000;
        --background-color: #252525;
        --text-color: #ffffff;
        --section-padding: 100px 0;
        --border-radius: 8px;
        --transition: all 0.3s ease;
        --vh: 1vh;
    }
    
    body {
        font-family: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic UI', 'Meiryo', sans-serif;
        background-color: var(--background-color);
        color: var(--text-color);
        font-size: 16px;
        line-height: 1.6;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        -webkit-text-size-adjust: 100%;
        -ms-text-size-adjust: 100%;
        text-size-adjust: 100%;
        overflow-x: hidden;
    }
            
    h2 {
        font-size: 2rem;
        font-weight: 600;
        line-height: 1.3;
        margin-bottom: 0.875rem;
    }
    
    h3 {
        font-size: 1.5rem;
        font-weight: 600;
        line-height: 1.4;
        margin-bottom: 0.75rem;
    }
    
    /* iOS Safari fixes */
    * {
        -webkit-box-sizing: border-box;
        -moz-box-sizing: border-box;
        box-sizing: border-box;
    }
    
    html {
        -webkit-text-size-adjust: 100%;
        -ms-text-size-adjust: 100%;
        text-size-adjust: 100%;
    }
    
    /* Responsive Break Tags */
    /* PC only - hidden on mobile */
    br.pc {
        display: inline;
    }
    
    /* SP only - hidden on desktop */
    br.sp {
        display: none;
    }
    
    @media (max-width: 768px) {
        br.pc {
            display: none;
        }
        
        br.sp {
            display: inline;
        }
    }
    @media (max-width: 1199px) {
        .hidden-tablet {
            display: none;
        }
    }

    /* Header Styles */
    .header {
        background-color:rgba(0, 0, 0, 0.4);
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        width: 100%;
        z-index: 1000;
        padding: 20px 0;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        -webkit-backdrop-filter: blur(10px);
        backdrop-filter: blur(10px);
    }
    
    .header .container {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        max-width: 100%;
        padding: 0 20px;
    }
    
    .logo {
        display: flex;
        align-items: center;
        text-decoration: none;
        color: #ffffff;
    }
    
    .logo img {
        height: 30px;
        width: auto;
    }
    
    .nav-menu {
        display: flex;
        list-style: none;
        margin: 0;
        padding: 0;
        gap: 40px;
        margin-right: 1.5rem;
    }
    
    .desktop-nav {
        margin-left: auto;
    }
    
    .nav-menu li a {
        color: #ffffff;
        text-decoration: none;
        font-size: 0.875rem;
        font-weight: 500;
        transition: color 0.3s ease;
    }
    
    .nav-menu li a:hover {
        color: #ff0000;
    }
    
    .cta-button {
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        transition: all 0.3s ease;
        border: none;
        color: #fff;
        cursor: pointer;
        display: inline-block;
        font-size: 16px;
        font-weight: bold;
        position: relative;
        text-align: center;
        text-decoration: none;
        text-transform: uppercase;
    }
    
    .cta-button:hover {
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
        transform: translateY(-2px);
        color: #fff;
        text-decoration: none;
    }
    
    .cta-button:active {
        box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
        transform: translateY(0);
    }
    
    .cta-button img {
        height: 60px;
        width: auto;
        max-width: 200px;
    }
    
    /* Additional utility classes */
    .hidden {
        display: none !important;
    }
    
    .overview-map {
        border: 0;
    }
    
    /* Google Maps Facade */
    .map-facade {
        position: relative;
        width: 100%;
        height: 450px;
        cursor: pointer;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    }
    
    .map-static-image {
        width: 100%;
        height: 100%;
        object-fit: cover;
    }
    
    .map-overlay {
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.3);
        display: flex;
        align-items: center;
        justify-content: center;
        transition: background 0.3s ease;
    }
    
    .map-facade:hover .map-overlay {
        background: rgba(0, 0, 0, 0.4);
    }
    
    .map-play-button {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 10px;
        color: white;
        font-weight: 600;
        font-size: 1.1rem;
        transition: transform 0.3s ease;
    }
    
    .map-facade:hover .map-play-button {
        transform: scale(1.1);
    }
    
    #map-container {
        width: 100%;
        height: 450px;
        border-radius: 8px;
        overflow: hidden;
    }
    
    .qr-notice {
        background-color: #252525;
        font-size: 0.75rem;
        color: #999999;
    }
    
    
    /* Lightbox styles */
    .lightbox {
        display: none;
        position: fixed;
        z-index: 1000;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.9);
        overflow: auto;
    }
    
    .lightbox-content {
        position: relative;
        margin: auto;
        padding: 20px;
        width: 90%;
        max-width: 800px;
        top: 50%;
        transform: translateY(-50%);
    }
    
    .lightbox-image {
        width: 100%;
        height: auto;
        border-radius: 8px;
    }
    
    .lightbox-close {
        position: absolute;
        top: 15px;
        right: 35px;
        color: #ffffff;
        font-size: 40px;
        font-weight: bold;
        cursor: pointer;
        transition: color 0.3s ease;
    }
    
    .lightbox-close:hover {
        color: #ff0000;
    }
    
    .lightbox-nav {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        color: #ffffff;
        font-size: 30px;
        cursor: pointer;
        width: 50px;
        height: 50px;
        padding: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        background-color: rgba(0, 0, 0, 0.5);
        border-radius: 50%;
        transition: all 0.3s ease;
    }
    
    .lightbox-nav:hover {
        background-color: rgba(255, 0, 0, 0.7);
    }
    
    .lightbox-prev {
        left: 20px;
    }
    
    .lightbox-next {
        right: 20px;
    }
    
    .lightbox-caption {
        color: #ffffff;
        text-align: center;
        padding: 20px 0;
        font-size: 18px;
    }
    
    /* Mobile Menu */
    .mobile-menu-toggle {
        display: none;
        background: none;
        border: none;
        color: #ffffff;
        font-size: 1.5rem;
        cursor: pointer;
    }
    
    .mobile-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: #000000;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        z-index: 9999;
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: all 0.3s ease;
        pointer-events: none;
        max-height: 0;
        overflow: hidden;
    }
    
    .mobile-menu.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
        pointer-events: auto;
        max-height: 500px;
    }
    
    .mobile-menu .nav-menu {
        display: flex !important;
        flex-direction: column;
        gap: 0;
        list-style: none;
        margin: 0;
        padding: 0;
    }
    
    .mobile-menu .nav-menu li {
        display: block;
    }
    .mobile-menu .nav-menu li:nth-child(even) {
        background:rgb(39, 39, 39);
    }
    .mobile-menu .nav-menu li a {
        color: #ffffff;
        text-decoration: none;
        font-size: 1rem;
        font-weight: 500;
        display: block;
        padding: 10px 0;
        line-height: 2.5;
        text-indent: 1.5rem;
        transition: color 0.3s ease;
    }
    
    .mobile-menu .nav-menu li a:hover {
        color: #ff0000;
    }
    
    .mobile-menu .cta-button {
        margin-top: 20px;
        display: inline-block;
    }
    
    .mobile-menu .cta-button img {
        height: 50px;
        width: auto;
        max-width: 150px;
    }
    
    /* Responsive Design */
    @media (max-width: 991.98px) {
        .desktop-nav .nav-menu {
            display: none;
        }
        
        .mobile-menu-toggle {
            display: block;
        }
        
        .header .container {
            position: relative;
        }
        .about-section-features{
            margin-top: 0!important;
        }
    }
    
    @media (max-width: 767.98px) {
        .header {
            padding: 15px 0;
            width: 100%;
            left: 0;
            right: 0;
        }
        
        .header .container {
            width: 100%;
            max-width: 100%;
            padding: 0 10px;
            gap: 10px;
        }
        .cta-button img{
            height: 40px;
        }
        .logo img {
            height: 25px;
        }
    }
    
    /* Hero Section Styles */
    .hero {
        background-color: #000000;
        padding: 120px 0 80px 0;
        min-height: 100vh;
        display: flex;
        align-items: center;
        position: relative;
        overflow: hidden;
    }
    
    .hero .container {
        position: relative;
        z-index: 3;
    }
    
    .hero-video {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        z-index: 1;
        overflow: hidden;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .hero-video video {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center;
        aspect-ratio: 4/3;
        min-width: 133.33vh;
        min-height: 100vh;
        filter: brightness(0.5);
    }
    
    .hero-content {
        opacity: 1;
        transform: translateY(0);
        transition: all 1s ease-out;
    }
    
    .hero-content-cube {
        opacity: 0;
        transform: rotate(45deg) scale(0.5);
        transition: all 1s ease-out;
    }
    
    .hero-content-cube.animate-in {
        opacity: 0.1;
        transform: rotate(45deg) scale(1);
    }
    
    .hero-content {
        opacity: 0;
        transform: translateY(30px);
        transition: all 1s ease-out;
    }
    
    .hero-content.animate-in {
        opacity: 1;
        transform: translateY(0);
    }
    
    .hero::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background-image: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="cube" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><path d="M0,0 L20,0 L20,20 L0,20 Z" fill="none" stroke="%23ff0000" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23cube)"/></svg>');
        opacity: 0.3;
        z-index: 1;
    }
    
    .hero-content {
        position: relative;
        z-index: 3;
    }
    
    .hero-title {
        font-size: 3rem;
        font-weight: bolder;
        color: #ffffff;
        line-height: 1.2;
        margin-bottom: 30px;
    }
    
    .hero-title-sub {
        font-size: 2rem;
        font-weight: bold;
        color: #ffffff;
        line-height: 1.3;
        margin-bottom: 20px;
    }
    
    .hero-cta {
        margin-top: 40px;
        display: flex;
        align-items: center;
        min-height: 100px;
    }
    
    .hero-cta-content {
        width: 50%;
        margin-right: auto;
        text-align: left;
        display: flex;
        gap: 20px;
        align-items: center;
        justify-content: flex-start;
    }
    
    .hero-cta-content img {
        max-height: 80px;
        width: auto;
        max-width: 300px;
    }

    .hero-cta-content a img {
        max-height: 80px;
        width: auto;
        max-width: 200px;
    }
    
    /* Decorative Elements */
    
    .hero-content-cube-1 {
        top: 10%;
        left: 10%;
        animation: float 6s ease-in-out infinite;
    }
    
    .hero-content-cube-2 {
        bottom: 10%;
        right: 10%;
        animation: float 6s ease-in-out infinite 3s;
    }
    
    @keyframes float {
        0%, 100% { transform: rotate(45deg) translateY(0px); }
        50% { transform: rotate(45deg) translateY(-20px); }
    }
    
    /* iOS Safari specific fixes */
    @media screen and (-webkit-min-device-pixel-ratio: 0) {
        .header {
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
        }
    }
    
    /* Safari specific fixes */
    @supports (-webkit-appearance: none) {
        .header {
            -webkit-backdrop-filter: blur(10px);
            backdrop-filter: blur(10px);
        }
        
        body {
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
    }
    
    /* Safari mobile specific */
    @media screen and (max-width: 768px) and (-webkit-min-device-pixel-ratio: 2) {
        .hero {
            min-height: 100vh;
            min-height: calc(var(--vh, 1vh) * 100);
        }
    }
    
    /* Safari specific viewport fixes */
    @media screen and (max-width: 768px) {
        .hero {
            min-height: 100vh;
            min-height: calc(var(--vh, 1vh) * 100);
            -webkit-transform: translateZ(0);
            transform: translateZ(0);
        }
        
        .header {
            -webkit-transform: translateZ(0);
            transform: translateZ(0);
        }
    }
    
    /* Safari font rendering fixes */
    @media screen and (-webkit-min-device-pixel-ratio: 2) {
        body {
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            text-rendering: optimizeLegibility;
        }
    }
    
    /* Mobile touch improvements */
    .mobile-menu-toggle,
    .mobile-menu-toggle span,
    .mobile-menu .nav-menu li a {
        -webkit-tap-highlight-color: transparent;
        -webkit-touch-callout: none;
        -webkit-user-select: none;
        -khtml-user-select: none;
        -moz-user-select: none;
        -ms-user-select: none;
        user-select: none;
    }
    
    /* Responsive Design */
    @media (max-width: 768px) {
        .hero {
            background-image: url('../images/top/kv_video_bg.webp');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            padding: 100px 0 60px 0;
        }
        
        .hero-title {
            font-size: 2.5rem;
        }
        
        .hero-title-sub {
            font-size: 1.5rem;
        }
        
        .hero-cta-content {
            width: 100%;
            margin-left: 0;
            flex-direction: row;
            gap: 15px;
            text-align: center;
            justify-content: center;
        }
        
        .hero-cta-content img {
            max-height: 60px;
            max-width: 250px;
        }
        
    }
    
    @media (max-width: 576px) {
        .hero-title {
            font-size: 1.8rem;
        }
        .hero-title-sub {
            font-size: 1.4rem;
            font-weight: 700;
        }
        .hero-cta {margin-top: 80px;}
        .hero-cta-content {
            flex-direction: column;
            align-items: flex-start;
        }
    }
    
    /* About Section Styles */
    .about {
        background-color: #1a1a1a;
        padding: 100px 0;
        position: relative;
    }
    /* Section Title Background Images */
    .about h2 { 
        background-image: url('../images/top/h2_aboutus.png'); /* WebP非対応ブラウザ用フォールバック */
        background-image: url('../images/top/h2_aboutus.webp'); /* WebP対応ブラウザ用 */
    }
    .overview h2 { 
        background-image: url('../images/top/h2_overview.png'); /* WebP非対応ブラウザ用フォールバック */
        background-image: url('../images/top/h2_overview.webp'); /* WebP対応ブラウザ用 */
    }
    .participate h2 { 
        background-image: url('../images/top/h2_participate.png'); /* WebP非対応ブラウザ用フォールバック */
        background-image: url('../images/top/h2_participate.webp'); /* WebP対応ブラウザ用 */
    }
    .advisory h2 { 
        background-image: url('../images/top/h2_adv.png'); /* WebP非対応ブラウザ用フォールバック */
        background-image: url('../images/top/h2_adv.webp'); /* WebP対応ブラウザ用 */
    }
    .countries h2 { 
        background-image: url('../images/top/h2_flag.png'); /* WebP非対応ブラウザ用フォールバック */
        background-image: url('../images/top/h2_flag.webp'); /* WebP対応ブラウザ用 */
    }
    .program h2 { 
        background-image: url('../images/top/h2_program.png'); /* WebP非対応ブラウザ用フォールバック */
        background-image: url('../images/top/h2_program.webp'); /* WebP対応ブラウザ用 */
    }
    .speakers h2 { 
        background-image: url('../images/top/h2_speakers.png'); /* WebP非対応ブラウザ用フォールバック */
        background-image: url('../images/top/h2_speakers.webp'); /* WebP対応ブラウザ用 */
    }
    .gallery h2 { 
        background-image: url('../images/top/h2_gallery.png'); /* WebP非対応ブラウザ用フォールバック */
        background-image: url('../images/top/h2_gallery.webp'); /* WebP対応ブラウザ用 */
    }
    .ticket h2 { 
        background-image: url('../images/top/h2_ticket.png'); /* WebP非対応ブラウザ用フォールバック */
        background-image: url('../images/top/h2_ticket.webp'); /* WebP対応ブラウザ用 */
    }
    
    .about h2, .overview h2, .participate h2, .advisory h2, .countries h2, .program h2, .speakers h2, .gallery h2, .ticket h2 {
        background-size: auto 120px;
        background-repeat: no-repeat;
        position: relative;
        padding-top: 120px;
        color: #ffffff;
    }

    /* Gallery Section Styles */
    .gallery {
        background-color: #252525;
        padding: 100px 0;
        position: relative;
    }

    .gallery-container {
        text-align: center;
        max-width: 1400px;
        margin: 0 auto;
    }

    .gallery_list_box {
        display: inline-block;
        width: 23%;
        position: relative;
        overflow: visible;
        border-radius: 8px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
        transition: all 0.6s ease-out;
        opacity: 1;
        transform: translateY(0);
        text-decoration: none;
        cursor: pointer;
        vertical-align: top;
        margin-bottom: 80px;
    }

    .gallery_list_box.animate-in {
        opacity: 1;
        transform: translateY(0);
    }

    .gallery_list_box:hover {
        transform: translateY(-10px) scale(1.02);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
    }

    .gallery_list_box img {
        width: 100%;
        height: 200px;
        object-fit: cover;
        object-position: center;
        transition: all 0.3s ease;
        border-radius: 8px;
    }

    .gallery_list_box:hover img {
        transform: scale(1.1);
    }

    .gallery_list_box h3 {
        position: absolute;
        bottom: -60px;
        left: 0;
        right: 0;
        background: rgba(0, 0, 0, 0.9);
        color: #ffffff;
        padding: 15px;
        margin: 0;
        font-size: 0.875rem;
        font-weight: 500;
        line-height: 1.4;
        border-radius: 0 0 8px 8px;
        opacity: 1;
        transform: translateY(0);
        transition: all 0.3s ease;
        z-index: 10;
        min-height: 60px;
        display: flex;
        align-items: center;
        justify-content: center;
        text-align: center;
    }

    .gallery_list_box:hover h3 {
        background: rgba(255, 0, 0, 0.9);
        transform: translateY(0);
    }

    /* Lightbox Styles */
    .lightbox {
        display: none;
        position: fixed;
        z-index: 1000;
        left: 0;
        top: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.9);
        backdrop-filter: blur(5px);
    }

    .lightbox-content {
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
        max-width: 90%;
        max-height: 90%;
        background-color: #ffffff;
        border-radius: 8px;
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    }

    .lightbox-image {
        width: 100%;
        height: auto;
        border-radius: 8px 8px 0 0;
        display: block;
    }

    .lightbox-caption {
        padding: 20px;
        color: #333333;
        font-size: 1rem;
        line-height: 1.4;
        text-align: center;
    }

    .lightbox-close {
        position: absolute;
        top: 10px;
        right: 15px;
        color: #ffffff;
        font-size: 30px;
        font-weight: bold;
        cursor: pointer;
        z-index: 1001;
        background: rgba(0, 0, 0, 0.5);
        width: 40px;
        height: 40px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        transition: all 0.3s ease;
    }

    .lightbox-close:hover {
        background: rgba(255, 0, 0, 0.8);
        transform: scale(1.1);
    }

    .lightbox-nav {
        position: absolute;
        top: 50%;
        transform: translateY(-50%);
        background: rgba(0, 0, 0, 0.5);
        color: #ffffff;
        border: none;
        font-size: 24px;
        width: 50px;
        height: 50px;
        padding: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        cursor: pointer;
        border-radius: 50%;
        transition: all 0.3s ease;
    }

    .lightbox-nav:hover {
        background: rgba(255, 0, 0, 0.8);
        transform: translateY(-50%) scale(1.1);
    }

    .lightbox-prev {
        left: 20px;
    }

    .lightbox-next {
        right: 20px;
    }
    
    /* Responsive Lightbox Navigation for Mobile */
    @media (max-width: 768px) {
        .lightbox-nav {
            width: 40px;
            height: 40px;
            font-size: 20px;
        }
        
        .lightbox-prev {
            left: 10px;
        }
        
        .lightbox-next {
            right: 10px;
        }
    }

    /* Responsive Gallery */

    @media (max-width: 991.98px) {
        .gallery_list_box {
            width: 30%;
            margin: 1%;
            margin-bottom: 40px;
        }
    }

    @media (max-width: 768px) {
        .gallery_list_box {
            width: 48%;
            margin: 1%;
            margin-bottom: 40px;
        }
        
        .gallery_list_box img {
            height: 150px;
        }
        
        .gallery_list_box h3 {
            font-size: 0.8rem;
            padding: 15px 10px 10px;
            min-height: 60px;
        }
    }

    @media (max-width: 576px) {
        .gallery_list_box {
            width: 45%;
            margin: 10px 0 80px 0;
        }
        
        .gallery_list_box img {
            height: 150px;
        }
        
        .gallery_list_box h3 {
            font-size: 0.8rem;
            padding: 15px 10px 10px;
            min-height: 60px;
        }
    }
    
    .section-title {
        font-size: 1rem;
        font-weight: 700;
        color: var(--primary-color);
        margin-bottom: 20px;
        text-transform: uppercase;
        letter-spacing: 2px;
    }
    
    .section-subtitle {
        font-size: 1.8rem;
        color: var(--text-color);
        margin-bottom: 50px;
        font-weight: 600;
    }
    
    .about-section-content {
        color: #ffffff;
        font-size: 1.1rem;
        line-height: 1.8;
        margin-bottom: 50px;
    }
    
    .about-section-features {
        display: flex;
        flex-direction: column;
        gap: 30px;
        margin-top: 60px;
    }
    
    .about-section-feature-card {
        font-size: 0.875rem;
        padding: 20px;
        border-radius: 3px;
        color: #ffffff;
        text-align: center;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        position: relative;
        overflow: hidden;
        opacity: 0;
        transform: translateY(30px);
        transition: all 0.6s ease-out;
    }
    .about-section-feature-card p {
        margin-bottom: 0;
    }

    .about-section-feature-card:nth-child(odd) {
        background-image: url('../images/top/feature-box_bg_odd.png'); /* WebP非対応ブラウザ用フォールバック */
        background-image: url('../images/top/feature-box_bg_odd.webp'); /* WebP対応ブラウザ用 */
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
    }
    .about-section-feature-card:nth-child(even) {
        background-image: url('../images/top/feature-box_bg_even.png'); /* WebP非対応ブラウザ用フォールバック */
        background-image: url('../images/top/feature-box_bg_even.webp'); /* WebP対応ブラウザ用 */
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
    }
    
    .about-section-feature-card.animate-in {
        opacity: 1;
        transform: translateY(0);
    }
    
    .about-section-feature-card:nth-child(1) { transition-delay: 0.1s; }
    .about-section-feature-card:nth-child(2) { transition-delay: 0.3s; }
    .about-section-feature-card:nth-child(3) { transition-delay: 0.5s; }
    
    .about-section-feature-card h4 {
        font-size: 1rem;
        font-weight: 600;
        margin-bottom: 15px;
        line-height: 1.4;
        color: #ffffff;
    }
    
    /* Responsive About Section */
    @media (max-width: 768px) {
        .about {
            padding: 80px 0;
        }
        
        .section-title {
            font-size: 1rem;
        }
        
        .section-subtitle {
            font-size: 1.5rem;
        }
    }
    
    @media (max-width: 576px) {
        .section-title {
            font-size: 1rem;
        }
        
        .section-subtitle {
            font-size: 1.3rem;
        }
        
        .about-section-content {
            font-size: 0.875rem;
        }

        .about-section-feature-card h4 {
            font-size: 1rem;
        }
    }
    
    /* Overview Section Styles */
    .overview {
        background-color: #252525;
        padding: 100px 0;
        position: relative;
    }
    
    .overview-section-content {
        color: #ffffff;
        font-size: 1.1rem;
        line-height: 1.8;
        margin-bottom: 50px;
    }
    
    .overview-section-item {
        background-color: #ffffff;
        border-radius: 8px;
        padding: 30px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        transition: all 0.3s ease;
        position: relative;
        overflow: hidden;
        opacity: 0;
        transform: translateY(30px);
        transition: all 0.6s ease-out;
    }
    
    .overview-section-item.animate-in {
        opacity: 1;
        transform: translateY(0);
    }
    
    .overview-section-item:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }
    
    .overview-section-item::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(135deg, #ff0000, #cc0000);
    }
    
    .overview-table {
        background-color: #ffffff;
        border-radius: 8px;
        overflow: hidden;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        width: 100%;
        margin-bottom: 0;
    }
    
    .overview-table h3 {
        font-weight: bold;
        line-height: 1.2;
        margin-bottom: 0;
    }

    .overview-table td {
        padding: 20px;
        border: 1px solid #e0e0e0;
        vertical-align: top;
    }
    
    .overview-table td:first-child {
        background-color: #f8f9fa;
        font-weight: 600;
        color: #333333;
        width: 120px;
    }
    
    .overview-table td:last-child {
        color: #333333;
        line-height: 1.4;
    }
    
    .overview-table small {
        color: #666666;
        font-size: 0.8rem;
        line-height: 1.2;
    }
    
    .overview-table a {
        color: #ff0000;
        text-decoration: none;
    }
    
    .overview-table a:hover {
        text-decoration: underline;
    }
    
    .overview-section-small {
        color: #666666;
        font-size: 0.8rem;
        line-height: 1.4 !important;
        margin: 0 !important;
        padding: 0 !important;
    }
    
    .overview-table small.overview-section-small {
        line-height: 1.4 !important;
        margin: 0 !important;
        padding: 0 !important;
        display: inline-block;
    }
    
    .overview-table td div {
        margin-bottom: 2px;
        line-height: 1.3;
    }
    
    .overview-table td div:last-child {
        margin-bottom: 0;
    }
    
    
    .overview-map {
        width: 100%;
        height: 100%;
        min-height: 300px;
        border-radius: 8px;
        overflow: hidden;
        /* Priority loading for Google Maps */
        content-visibility: auto;
        contain-intrinsic-size: 450px;
        /* Force GPU acceleration for faster rendering */
        transform: translateZ(0);
        -webkit-transform: translateZ(0);
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        border: 0;
    }
    
    /* Responsive Overview Section */
    @media (max-width: 768px) {
        .overview {
            padding: 80px 0;
        }
        .overview-table td {
            padding: 10px;
        }
        .overview-table td:first-child {
            width: 100px;
            font-size: 1rem;
        }
        .overview-table td h3 {
            font-size: 1.4rem;
        }
        
        .overview-map {
            min-height: 250px;
        }
        .overview-section-content {
            margin-bottom: 0;
        }
        .overview-section-content .row {
            gap: 10px;
        }
    }
    
    @media (max-width: 576px) {
        .overview-map {
            min-height: 340px;
        }
    }

    /* Participate Section Styles */
    .participate {
        background-color: #000000;
        padding: 100px 0;
        position: relative;
    }

    .participate-section-grid {
        margin-top: 40px;
    }
    
    .participate-section-item {
        background-color: #ffffff;
        border-radius: 8px;
        padding: 30px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        transition: all 0.3s ease;
        position: relative;
        overflow: hidden;
        opacity: 0;
        transform: translateY(30px);
        transition: all 0.6s ease-out;
        display: flex;
        align-items: flex-start;
        gap: 20px;
    }

    .participate-section-item-content p{
        margin-bottom: 0;
    }
    
    .participate-section-item.animate-in {
        opacity: 1;
        transform: translateY(0);
    }
    
    .participate-section-item:hover {
        transform: translateY(-5px);
        box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    }
    
    .participate-section-item::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 4px;
        background: linear-gradient(135deg, #ff0000, #cc0000);
    }
    
    .participate-section-title {
        color: #333333;
        font-size: 1.3rem;
        font-weight: 600;
        margin-bottom: 15px;
        line-height: 1.4;
    }
    
    .participate-section-description {
        color: #666666;
        font-size: 0.95rem;
        line-height: 1.6;
        margin-bottom: 15px;
    }
    
    .participate-section-step {
        color: #333333;
        font-weight: 700;
        font-size: 1rem;
        flex-shrink: 0;
        width: auto;
        height: auto;
        padding: 0;
    }
    
    .participate-section-item-content {
        flex: 1;
    }
    
    /* Responsive Participate Section */
    @media (max-width: 768px) {
        .participate {
            padding: 80px 0;
        }
        .participate-section-grid {
            margin-top: 0;
        }
        .participate-section-item {
            padding: 25px;
            gap: 15px;
        }
        
        .participate-section-step {
            font-size: 0.9rem;
        }
        
        .participate-section-title {
            font-size: 1.2rem;
        }
        
        .participate-section-description {
            font-size: 0.9rem;
        }
    }
    
    @media (max-width: 576px) {
        .participate-section-item {
            padding: 20px;
            gap: 12px;
        }
        
        .participate-section-step {
            font-size: 0.8rem;
        }
        
        .participate-section-title {
            font-size: 1.1rem;
        }
        
        .participate-section-description {
            font-size: 0.85rem;
        }
    }

    /* Advisory Board Section Styles */
    .advisory {
        background-color: #333333;
        padding: 100px 0;
        position: relative;
    }
    
    .advisory-content-wrapper {
        background-color: #EDEDED;
        border-radius: 2px;
        padding: 30px;
        margin-bottom: 40px;
    }
    
    .advisory-description {
        text-align: center;
        margin-bottom: 40px;
    }
    
    .advisory-description div {
        color: #000000;
        font-size: 1.1rem;
        line-height: 1.6;
    }
    
    .advisory-section-flex {
        display: flex;
        flex-direction: row;
        gap: 1px;
        justify-content: center;
        align-items: stretch;
    }
    
    /* Tablet responsive */
    @media (max-width: 991.98px) {
        .advisory-section-flex {
            flex-direction: column;
            gap: 20px;
        }
        
        .advisory-section-category {
            min-height: auto;
            padding: 30px 25px;
        }
    }
    
    .advisory-section-category {
        background-color: rgb(255, 255, 255);
        padding: 40px 30px;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        opacity: 1;
        transform: translateY(0);
        transition: all 0.6s ease-out;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        min-height: 400px;
        flex: 1;
        min-width: 0;
    }
    
    /* アニメーション準備が整ったら非表示にする */
    body.animation-ready .advisory-section-category {
        opacity: 0;
        transform: translateY(30px);
    }
    
    /* アニメーション実行時は表示 - 詳細度を上げる */
    body.animation-ready .advisory-section-category.animate-in {
        opacity: 1;
        transform: translateY(0);
    }
    
    .advisory-section-category:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    }
    
    .advisory-category-header {
        text-align: center;
        margin-bottom: 20px;
    }
    
    .advisory-category-number {
        font-family: 'Impact', sans-serif;
        font-size: 5.5rem;
        font-weight: 700;
        color: #000000;
        line-height: 1;
        margin-bottom: 10px;
    }
    
    .advisory-category-title {
        font-size: 1.2rem;
        color: #000000;
        font-weight: 600;
        line-height: 1.4;
    }
    
    .logos-grid {
        display: flex;
        justify-content: center;
        align-items: center;
        flex-grow: 1;
        margin: 20px 0;
    }
    
    .advisory-category-others {
        text-align: center;
        color: #000000;
        font-size: 0.9rem;
        font-weight: 500;
        margin-top: auto;
        padding-top: 15px;
    }
    
    /* Responsive Advisory Section */
    @media (max-width: 768px) {
        .advisory {
            padding: 80px 0;
        }
        
        .advisory-section-flex {
            flex-direction: column;
            gap: 20px;
        }
        
        .advisory-section-category {
            min-height: auto;
            padding: 30px 20px;
        }
        
        .advisory-content-wrapper {
            padding: 25px;
            margin-bottom: 30px;
        }
        
        .advisory-description {
            margin-bottom: 30px;
        }
        
        .advisory-description div {
            font-size: 1rem;
            text-align: left;
        }
        
        .logos-grid {
            grid-template-columns: repeat(auto-fit, minmax(70px, 1fr));
            gap: 15px;
        }
    }
    
    @media (max-width: 576px) {
        
        .advisory-content-wrapper {
            padding: 20px;
            margin-bottom: 25px;
        }
        
        .advisory-description {
            margin-bottom: 25px;
        }
        
        .advisory-description div {
            font-size: 0.95rem;
        }
        
        .logos-grid {
            grid-template-columns: repeat(auto-fit, minmax(60px, 1fr));
            gap: 12px;
        }
    }
    
    /* Participating Countries Section Styles */
    .countries {
        background-color: #000000;
        padding: 100px 0;
        position: relative;
    }
    
    .countries-section-grid {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
        margin-top: 30px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .countries-section-grid .countries-flag-item {
        flex: 0 0 80px;
        width: 80px;
        height: 80px;
    }
    
    
    @media (max-width: 768px) {
        .countries-section-grid {
            gap: 15px;
        }
    }
    
    @media (max-width: 576px) {
        .countries-section-grid .countries-flag-item {
            flex: 0 0 60px;
            width: 60px;
            height: 60px;
        }
    }
    
    .countries-flag-item {
        aspect-ratio: 1 / 1;
        border-radius: 50%;
        background: linear-gradient(135deg, #ff0000, #cc0000);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #ffffff;
        font-size: 0.8rem;
        font-weight: 600;
        text-align: center;
        line-height: 1.2;
        transition: all 0.3s ease;
        position: relative;
        overflow: visible;
        opacity: 0;
        transform: scale(0.5) rotate(180deg);
        transition: all 0.5s ease-out;
        cursor: pointer;
    }
    
    .countries-flag-item.animate-in {
        opacity: 1;
        transform: scale(1) rotate(0deg);
    }
    
    .countries-flag-item::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(45deg, rgba(255,255,255,0), transparent);
        opacity: 0;
        transition: opacity 0.3s ease;
    }
    
    .countries-flag-item:hover {
        transform: scale(1.1);
        box-shadow: 0 8px 25px rgba(255, 0, 0, 0.3);
    }
    
    .countries-flag-item:hover::before {
        opacity: 1;
    }
    
    .countries-flag-item img {
        width: 100%;
        height: 100%;
        aspect-ratio: 1 / 1;
        border-radius: 50%;
        object-fit: cover;
        object-position: center;
    }
    
    .countries-country-name {
        position: absolute;
        bottom: 70px;
        left: 50%;
        transform: translateX(-50%);
        background-color: #333333;
        color: #ffffff;
        padding: 8px 12px;
        border-radius: 6px;
        font-size: 0.75rem;
        font-weight: 500;
        white-space: nowrap;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        z-index: 1000;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }
    
    .countries-country-name::after {
        content: '';
        position: absolute;
        top: 100%;
        left: 50%;
        transform: translateX(-50%);
        border: 6px solid transparent;
        border-top-color: #333333;
    }
    
    .countries-flag-item:hover .countries-country-name {
        opacity: 1;
        visibility: visible;
        transform: translateX(-50%) translateY(-5px);
    }
    
    .recommend-visual-item {
        text-align: center;
        position: relative;
        opacity: 0;
        transform: translateY(30px);
        transition: all 0.6s ease-out;
    }
    
    .recommend-visual-item.animate-in {
        opacity: 1;
        transform: translateY(0);
    }
    
    .recommend-visual-item.animate-in .recommend-visual-title {
        opacity: 1;
        transform: translateY(0);
        transition-delay: 0.1s;
    }
    
    .recommend-visual-item.animate-in .recommend-visual-caption {
        opacity: 1;
        transform: translateY(0);
        transition-delay: 0.2s;
    }
    
    .recommend-visual-image {
        width: 100%;
        max-width: 400px;
        height: 250px;
        background: linear-gradient(135deg, #ff0000, #cc0000);
        border-radius: 3px;
        display: flex;
        align-items: center;
        justify-content: center;
        color: #ffffff;
        font-size: 1.2rem;
        font-weight: 600;
        margin-bottom: 20px;
        position: relative;
        overflow: hidden;
    }
    
    .recommend-visual-image::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="tech" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="2" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23tech)"/></svg>');
        opacity: 0.3;
    }
    
    .recommend-visual-title {
        color: #ffffff;
        font-size: 1rem;
        font-weight: 700;
        line-height: 1.8;
        margin-top: 15px;
        opacity: 0;
        transform: translateY(20px);
        transition: all 0.6s ease-out;
    }
    
    .recommend-visual-caption {
        color: #ffffff;
        font-size: 0.875rem;
        font-weight: 500;
        line-height: 1.4;
    }
    
    /* Responsive Countries Section */
    @media (max-width: 768px) {
        .countries {
            padding: 80px 0;
        }
        
        .countries-country-name {
            font-size: 0.7rem;
            padding: 6px 10px;
            bottom: 60px;
        }
        
        .recommend-section-visual {
            flex-direction: column;
            gap: 30px;
        }
        
        .recommend-visual-image {
            max-width: 350px;
            height: 200px;
            font-size: 1rem;
        }
        
        .recommend-visual-caption {
            font-size: 1rem;
        }
    }
    
    @media (max-width: 576px) {
        
        .countries-country-name {
            font-size: 0.65rem;
            padding: 5px 8px;
            bottom: 55px;
        }
        
        .recommend-visual-image {
            height: 180px;
            font-size: 0.9rem;
        }
    }
    
    /* Key Metrics Section Styles */
    .metrics {
        background-color: #000000;
        padding: 20px;
        position: relative;
        overflow: hidden;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .metrics::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: linear-gradient(45deg, rgba(255, 0, 0, 0.05), transparent, rgba(255, 0, 0, 0.05));
        z-index: 1;
    }
    
    .metrics-section-container {
        position: relative;
        z-index: 2;
        width: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .metrics-section-grid {
        display: grid;
        grid-template-columns: repeat(6, 1fr);
        gap: 20px;
        margin: 0;
        width: 100%;
        max-width: 100%;
    }
    
    .metrics-section-item {
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
        border: 1px solid rgba(255, 255, 255, 0.2);
        padding: 0;
        text-align: center;
        transition: all 0.4s ease;
        position: relative;
        overflow: hidden;
        opacity: 0;
        transform: translateY(30px) scale(0.9);
        transition: all 0.6s ease-out;
        aspect-ratio: 1.48 / 1;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .metrics-section-item picture {
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        position: relative;
    }
    
    .metrics-section-item img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        object-position: center;
        display: block;
        /* iOS Safari fixes */
        -webkit-backface-visibility: hidden;
        backface-visibility: hidden;
        -webkit-transform: translateZ(0);
        transform: translateZ(0);
    }
    
    /* iOS Safari specific fixes for picture element */
    @supports (-webkit-touch-callout: none) {
        .metrics-section-item picture {
            display: block;
        }
        
        .metrics-section-item img {
            max-width: 100%;
            height: auto;
            min-height: 100%;
        }
    }
    
    .metrics-section-item.animate-in {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    
    .program-section-item {
        opacity: 1;
        transform: translateY(0) scale(1);
        transition: all 0.6s ease-out;
    }
    
    /* アニメーション準備が整ったら非表示にする */
    body.animation-ready .program-section-item {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    
    /* アニメーション実行時は表示 - 詳細度を上げる */
    body.animation-ready .program-section-item.animate-in {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    
    .speakers-section-card {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
        transition: all 0.6s ease-out;
    }
    
    .speakers-section-card.animate-in {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    
    .ticket-section-card {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
        transition: all 0.6s ease-out;
    }
    
    .ticket-section-card.animate-in {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
    
    .new-badge {
        background: linear-gradient(135deg, #ff0000, #cc0000);
        color: #ffffff;
        padding: 4px 12px;
        border-radius: 0;
        font-size: 0.8rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 1px;
        position: absolute;
        top: 0px;
        left: 10px;
        z-index: 10;
        animation: pulse 2s infinite;
    }
    
    @keyframes pulse {
        0%, 100% { transform: scale(1); }
        50% { transform: scale(1.05); }
    }
    
    /* Responsive Metrics Section */
    @media (max-width: 768px) {
        .metrics {
            padding: 20px;
        }
        
        .metrics-section-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        
        /* スマホ表示ではアニメーションを無効化して最初から表示 */
        .metrics-section-item,
        body.animation-ready .metrics-section-item,
        body.animation-ready .metrics-section-item.animate-in {
            padding: 0 !important;
            opacity: 1 !important;
            transform: translateY(0) scale(1) !important;
            transition: none !important;
            visibility: visible !important;
        }
        
        .metrics-section-item img,
        .metrics-section-item picture {
            opacity: 1 !important;
            visibility: visible !important;
        }
        
    }
    
    @media (max-width: 576px) {
        .metrics-section-grid {
            grid-template-columns: repeat(2, 1fr);
            gap: 15px;
        }
        
        /* スマホ表示ではアニメーションを無効化して最初から表示 */
        .metrics-section-item,
        body.animation-ready .metrics-section-item,
        body.animation-ready .metrics-section-item.animate-in {
            padding: 0 !important;
            opacity: 1 !important;
            transform: translateY(0) scale(1) !important;
            transition: none !important;
            visibility: visible !important;
        }
        
        .metrics-section-item img,
        .metrics-section-item picture {
            opacity: 1 !important;
            visibility: visible !important;
        }
    }
    
    /* Recommend Section Styles */
    .recommend {
        padding: 50px 0;
        position: relative;
        background-image: url('asset/images/bg01.png'); /* WebP非対応ブラウザ用フォールバック */
        background-image: url('asset/images/bg01.webp'); /* WebP対応ブラウザ用 */
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
    }
    
    .recommend-section-visual {
        margin-top: 20px;
        display: flex;
        flex-direction: row;
        gap: 40px;
        align-items: center;
        justify-content: center;
    }
    
    /* Program Section Styles */
    .program {
        background-color: #1a1a1a;
        padding: 100px 0;
        position: relative;
    }
    
    .program-section-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 30px;
        margin-top: 30px;
    }
    
    .program-section-item {
        background: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
        border-radius: 3px;
        padding: 0;
        overflow: hidden;
        transition: all 0.4s ease;
        position: relative;
    }
    
    .program-section-item:hover {
        transform: translateY(-10px);
        box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
        border-color: rgba(255, 0, 0, 0.5);
    }
    
    .program-section-image {
        width: 100%;
        height: 200px;
        background: linear-gradient(135deg, #ff0000, #cc0000);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #ffffff;
        font-size: 1.2rem;
        font-weight: 600;
        position: relative;
        overflow: hidden;
        background-size: cover;
        background-position: center;
        background-repeat: no-repeat;
    }
    
    /* Program Section Image Backgrounds */
    .program-reverse-pitch .program-section-image {
        background-image: url('../images/top/program05.webp');
    }
        
    .program-startup-pitch .program-section-image {
        background-image: url('../images/top/program01.webp');
    }
    
    .program-startup-booth .program-section-image {
        background-image: url('../images/top/program02.webp');
    }
    
    .program-bigtrend .program-section-image {
        background-image: url('../images/top/program04.webp');
    }
    
    .program-asia-summit .program-section-image {
        background-image: url('../images/top/program06.webp');
    }

    .program-keynote .program-section-image {
        background-image: url('../images/top/program03.webp');
    }
    
    .program-section-image::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.3);
        opacity: 0.5;
    }
    
    .program-section-content {
        padding: 25px;
    }
    
    .program-section-title-number {
        font-family: Impact, Haettenschweiler, 'Arial Narrow Bold', sans-serif;
        font-size: 4rem;
        line-height: 1;
    }
    .program-section-title {
        color: #ffffff;
        font-size: 1.2rem;
        font-weight: 600;
        line-height: 1.4;
        margin-bottom: 15px;
        padding-left: 15px;
        border-left: 3px solid #cc0000;
    }
    
    .program-section-description {
        color: #cccccc;
        font-size: 0.875rem;
        line-height: 1.5;
        margin-bottom: 15px;
    }
    
    .program-section-badge {
        display: inline-block;
        background: linear-gradient(135deg, #ff0000, #cc0000);
        color: #ffffff;
        padding: 4px 12px;
        border-radius: 15px;
        font-size: 0.8rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 1px;
        margin-bottom: 10px;
        display:none;
    }
    
    
    /* Responsive Program Section */
    @media (max-width: 768px) {
        .program {
            padding: 80px 0;
        }
        
        .program-section-grid {
            grid-template-columns: 1fr;
            gap: 25px;
        }
        
        .program-section-item {
            opacity: 1 !important;
            transform: translateY(0) scale(1) !important;
        }
        
        .program-section-image {
            height: 180px;
            font-size: 1rem;
        }
        
        .program-section-content {
            padding: 20px;
        }
        
        .program-section-title {
            font-size: 1.1rem;
        }
        
        .program-section-description {
            font-size: 0.9rem;
        }
    }
    
    @media (max-width: 576px) {
        .program-section-grid {
            gap: 20px;
        }
        
        .program-section-item {
            opacity: 1 !important;
            transform: translateY(0) scale(1) !important;
        }
        
        .program-section-image {
            height: 160px;
            font-size: 0.9rem;
        }
        
        .program-section-content {
            padding: 15px;
        }
    }
    
    /* Speakers Section Styles */
    .speakers {
        background-color: #000000;
        padding: 100px 0;
        position: relative;
    }
    
    .speakers-section-grid {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
        gap: 10px;
        margin-top: 30px;
    }
    
    .speakers-section-card {
        background: linear-gradient(135deg, rgba(255, 255, 255, 0), rgba(255, 255, 255, 0));
        border: 0px solid rgba(255, 0, 0, 0.3);
        border-radius: 3px;
        padding: 10px;
        text-align: center;
        transition: all 0.4s ease;
        position: relative;
        overflow: hidden;
        display: flex;
        flex-direction: column;
        height: 100%;
        justify-content: space-between;
    }
    
    .speakers-section-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: -100%;
        width: 100%;
        height: 100%;
        background: linear-gradient(90deg, transparent, rgba(255, 0, 0, 0.1), transparent);
        transition: left 0.6s ease;
    }
    
    .speakers-section-card:hover {
        transform: translateY(-5px);
        box-shadow: 0 15px 35px rgba(255, 0, 0, 0.2);
        border-color: rgba(255, 0, 0, 0.6);
    }
    
    .speakers-section-card:hover::before {
        left: 100%;
    }
    
    .speakers-section-photo {
        width: 120px;
        height: 120px;
        border-radius: 50%;
        margin: 0 auto 20px auto;
        background: rgb(57, 0, 0);
        display: flex;
        align-items: center;
        justify-content: center;
        color: #ffffff;
        font-size: 2rem;
        font-weight: bold;
        position: relative;
        overflow: hidden;
        z-index: 1;
    }
    
    .speakers-section-photo::before {
        content: '';
        position: absolute;
        top: -3px;
        left: -3px;
        right: -3px;
        bottom: -3px;
        border-radius: 50%;
        background: linear-gradient(135deg, rgb(255, 217, 0), rgb(255, 0, 0));
        z-index: 0;
    }
    
    
    .speakers-section-name {
        color: #ffffff;
        font-size: 1rem;
        font-weight: 600;
        margin-bottom: 10px;
        line-height: 1.3;
    }
    
    .speakers-section-title {
        color: #cccccc;
        font-size: 0.875rem;
        line-height: 1.4;
        margin-bottom: 15px;
    }
    
    .speakers-section-description {
        color: #aaaaaa;
        font-size: 0.75rem;
        line-height: 1.4;
        margin: 0;
        flex-grow: 1;
        display: flex;
        align-items: center;
        justify-content: center;
        min-height: 60px;
    }
    
    .speakers-section-company {
        color:rgb(255, 0, 0);
        font-size: 0.75rem;
        font-weight: 500;
        margin-top: 10px;
        text-transform: uppercase;
        letter-spacing: 1px;
    }
    
    /* Responsive Speakers Section */
    @media (max-width: 768px) {
        .speakers {
            padding: 80px 0;
        }
        
        .speakers-section-grid {
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 25px;
        }
        
        .speakers-section-photo {
            width: 100px;
            height: 100px;
            font-size: 1.5rem;
        }
        
        .speakers-section-card {
            padding: 15px;
        }
        
        .speakers-section-name {
            font-size: 1rem;
        }
        
        .speakers-section-title {
            font-size: 0.85rem;
        }
        
        .speakers-section-description {
            font-size: 0.8rem;
        }
    }
    
    @media (max-width: 576px) {
        .speakers-section-grid {
            grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
            gap: 20px;
        }
        
        .speakers-section-photo {
            width: 80px;
            height: 80px;
            font-size: 1.2rem;
        }
        
        .speakers-section-card {
            padding: 12px;
        }
        
        .speakers-section-name {
            font-size: 0.95rem;
        }
        
        .speakers-section-title {
            font-size: 0.8rem;
        }
        
        .speakers-section-description {
            font-size: 0.75rem;
        }
    }
    
    /* Get Ticket Section Styles */
    .ticket {
        padding: 100px 0;
        position: relative;
    }
    
    .ticket-section-title {
        color: #000000!important;
    }
    
    .ticket-section-image {
        width: 100%;
    }
    
    .ticket-section-card {
        background-color: #D9D9D9;
        padding: 40px;
        box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
        position: relative;
        overflow: hidden;
    }
    
    .ticket-section-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 5px;
    }
    
    .ticket-section-notice {
        background-color:rgb(255, 255, 255);
        border: 1px solid rgb(212, 212, 212);
        color: rgb(0, 0, 0);
        border-radius: 3px;
        padding: 15px;
        margin-bottom: 30px;
    }
    
    .ticket-section-notice h5 {
        font-size: 1rem;
        font-weight: 600;
        margin-bottom: 10px;
    }
    
    .ticket-section-notice p {
        font-size: 0.875rem;
        margin: 0;
        line-height: 1.4;
    }
    
    .ticket-cta {
        font-weight: bold;
        text-align: center;
        margin-top: 30px;
    }
    
    .ticket-cta-list {
        color: #333333;
        font-size: 0.75rem;
        font-weight: bold;
        padding: 0;
        margin: 40px 0 0 0;
        list-style-position: inside;
    }
    
    .ticket-btn {
        background: linear-gradient(135deg, #ff0000, #cc0000);
        color: #ffffff;
        padding: 15px 40px;
        border-radius: 50px;
        text-decoration: none;
        font-weight: 600;
        font-size: 1.1rem;
        text-transform: uppercase;
        letter-spacing: 1px;
        transition: all 0.3s ease;
        display: inline-block;
        box-shadow: 0 8px 25px rgba(255, 0, 0, 0.3);
    }
    
    .ticket-btn:hover {
        background: linear-gradient(135deg, #cc0000, #990000);
        color: #ffffff;
        transform: translateY(-3px);
        box-shadow: 0 12px 35px rgba(255, 0, 0, 0.4);
    }
    
    .ticket-btn:active {
        transform: translateY(-1px);
    }
    
    /* Responsive Ticket Section */
    @media (max-width: 768px) {
        .ticket {
            padding: 80px 0;
        }
        
        .ticket-section-card {
            padding: 30px 20px;
            margin: 0 15px;
        }
        
        .ticket-btn {
            padding: 12px 30px;
            font-size: 1rem;
        }
    }
    
    @media (max-width: 576px) {
        .ticket-section-card {
            padding: 25px 15px;
            margin: 0 10px;
        }
        
        .ticket-btn {
            padding: 12px 25px;
            font-size: 0.9rem;
        }
    }
    
    /* Large Desktop Optimization */
    @media (min-width: 1400px) {
        .container {
            max-width: 100vw;
        }
        
        .about .container,
        .overview .container,
        .participate .container,
        .advisory .container,
        .countries .container,
        .program .container,
        .speakers .container,
        .ticket .container {
            max-width: 1400px;
        }
        
        .hero-title {
            font-size: 4rem;
        }
        
        .section-title {
            font-size: 1rem;
        }
        
        .metrics-section-grid {
            grid-template-columns: repeat(6, 1fr);
        }
        
        .program-section-grid {
            grid-template-columns: repeat(3, 1fr);
        }
        
        .speakers-section-grid {
            grid-template-columns: repeat(6, 1fr);
        }
    }
    /* ========================================
       Footer CSS - コピペ用
       ======================================== */

    /* 下部メニュー */
    #footer_gnav {
        background: #333333;
    }

    #footer_gnav div {
        margin: auto;
    }

    #footer_gnav ul, #footer_gnav li {
        margin: 0;
        padding: 0;
        list-style: none;
    }

    #footer_gnav ul {
        padding: 25px 0;
        display: flex;
        justify-content: center;
        flex-wrap: wrap;
        gap: 1rem 2rem;
    }

    #footer_gnav li a {
        font-weight: bold;
        color: #fff;
        text-decoration: underline;
        outline: unset;
    }

    /* モバイル対応 */
    @media (max-width: 768px) {
        #footer_gnav {
            display: none;
        }
    }

    /* 開催概要・レポートセクション */
    #footer_navi {
        text-align: left;
        width: 100%;
        font-size: 12px;
        background-color: #7f7f7f;
        color: #fff;
        padding: 20px 0px;
    }

    #footer_navi div {
        margin: 0 auto;
        width: 950px;
        line-height: 1.8;
    }

    #footer_navi div a {
        text-decoration: underline;
    }

    #footer_navi a {
        color: #fff;
    }

    /* メインフッター */
    footer {
        font-size: 12px;
        text-align: center;
        background-color: #333333;
        color: #fff;
        padding: 20px;
    }

    footer a {
        color: #fff;
    }

    #ILSBCfooter {
        padding: 20px 5%;
    }
    #ILSBCfooter p{
        margin: 0;
    }

    /* SNSシェアボタン */
    .social {
        margin: 50px auto;
        text-align: center;
    }

    .facebook {
        background-color: #2e4a88;
        box-shadow: 0 4px 0 #1B3D82;
        text-shadow: 0 -1px -1px #1B3D82;
        display: inline;
        position: relative;
        font-family: Arial;
        font-size: 14px;
        font-weight: bold;
        text-align: center;
        text-decoration: none;
        color: white;
        border-radius: 5px;
        padding: 14px 80px;
    }

    .facebook:hover {
        background-color: #354F84;
    }

    .facebook:active {
        top: 2px;
        box-shadow: 0 2px 0 #1B3D82;
    }

    .twitter {
        background-color: #008DDE;
        box-shadow: 0 4px 0 #0078BD;
        display: inline;
        position: relative;
        font-family: Arial;
        font-size: 14px;
        font-weight: bold;
        text-align: center;
        text-decoration: none;
        color: white;
        border-radius: 5px;
        padding: 14px 80px;
    }

    .twitter:active {
        top: 2px;
        box-shadow: 0 2px 0 #0078BD;
    }

    .twitter:hover {
        background-color: #1397D8;
    }

    /* レスポンシブ対応（モバイル） */
    @media (max-width: 991.98px) {
        #footer_gnav div,
        #footer_navi div {
            width: 95%;
            padding: 0 2.5%;
        }
        
        .facebook,
        .twitter {
            padding: 12px 40px;
            font-size: 12px;
            margin: 5px;
        }
    }
    
    /* WOVN.io翻訳ウィジェット用スタイル */
    #wovn-translate-widget {
        position: fixed!important;
        top: 120px!important;
    }