@font-face {
    font-family: 'AlongSans';
    src: url('fonts/alongsans-thin.ttf') format('truetype');
    font-weight: 100;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'AlongSans';
    src: url('fonts/alongsans-light.ttf') format('truetype');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'AlongSans';
    src: url('fonts/alongsans.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'AlongSans';
    src: url('fonts/alongsans-medium.ttf') format('truetype');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'AlongSans';
    src: url('fonts/alongsans-semibold.ttf') format('truetype');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'AlongSans';
    src: url('fonts/alongsans-extrabold.ttf') format('truetype');
    font-weight: 800;
    font-style: normal;
    font-display: swap;
}

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

body {
    font-family: 'AlongSans', 'Microsoft YaHei', Arial, sans-serif;
    width: 100%;
    overflow-x: hidden;
    background-color: #ffffff;
}

/* Header Styles */
.header {
    width: 100%;
    background-color: #fff;
    padding: 25px 60px 15px;
    border-bottom: 1px solid #d9d9d9;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
}

.header-top {
    display: flex;
    align-items: center;
    gap: 45px;
    width: 100%;
}

.nav-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.nav-row {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 35px;
}

.logo {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
}

.logo-img {
    height: 90px;
    width: auto;
    display: block;
    object-fit: contain;
}

/* Placeholder Blocks */
.placeholder {
    display: block;
    background-color: var(--placeholder-color, #e0e0e0);
    border-radius: 8px;
}

.placeholder-box {
    width: 100%;
    height: var(--placeholder-height, 200px);
}

.placeholder-circle {
    width: var(--placeholder-size, 120px);
    height: var(--placeholder-size, 120px);
    border-radius: 50%;
}


.color-blue { --placeholder-color: #4A90E2; }
.color-green { --placeholder-color: #7ED321; }
.color-red { --placeholder-color: #E94B3C; }
.color-pink { --placeholder-color: #FFB6C1; }
.color-yellow { --placeholder-color: #FFEB3B; }
.color-navy { --placeholder-color: #1a237e; }
.color-brown { --placeholder-color: #8B4513; }
.color-orange { --placeholder-color: #FF9800; }
.color-gray { --placeholder-color: #333333; }
.color-light { --placeholder-color: #f5f5f5; }

.banner-graphic {
    width: 220px;
    height: 220px;
    margin: 0 auto;
}

.banner-img,
.content-img,
.project-img,
.showcase-img,
.showcase-card,
.banner-device,
.book-img,
.bg-img,
.contact-img,
.flask-img {
    display: block;
    width: 100%;
    border-radius: 8px;
}

.primary-nav {
    display: flex;
    align-items: center;
    gap: 40px;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 18px;
    color: #4c4c4c;
}

.nav-link {
    text-decoration: none;
    color: #4c4c4c;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link.active {
    color: #111;
}

.nav-link:hover {
    color: #000;
}

.nav-divider {
    color: #bfbfbf;
    font-size: 18px;
}

.nav-divider-full {
    width: 100%;
    height: 3px;
    background-color: #333;
    margin: 12px 0 16px;
}

.search-btn {
    background: none;
    border: none;
    font-size: 20px;
    color: #333;
    cursor: pointer;
    padding: 5px 10px;
    transition: color 0.3s;
}

.nav-row .search-btn {
    margin-left: auto;
}

.search-btn:hover {
    color: #4A90E2;
}

/* Search Modal */
.search-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1000;
}

.search-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    animation: fadeIn 0.3s ease;
}

.search-modal-content {
    position: relative;
    background-color: #fff;
    border-radius: 12px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    animation: slideDown 0.3s ease;
    display: flex;
    flex-direction: column;
    z-index: 1001;
}

.search-modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 24px;
    color: #666;
    cursor: pointer;
    padding: 5px 10px;
    transition: color 0.3s;
    z-index: 1002;
}

.search-modal-close:hover {
    color: #4A90E2;
}

.search-modal-header {
    padding: 30px 30px 20px;
    border-bottom: 1px solid #eee;
}

.search-modal-header h2 {
    font-size: 24px;
    color: #333;
    margin: 0;
}

.search-modal-body {
    padding: 30px;
    overflow-y: auto;
    flex: 1;
}

.search-input-wrapper {
    position: relative;
    margin-bottom: 20px;
}

.search-input-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
    font-size: 18px;
}

.search-input {
    width: 100%;
    padding: 15px 15px 15px 45px;
    font-size: 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    outline: none;
    transition: border-color 0.3s;
}

.search-input:focus {
    border-color: #4A90E2;
}

.search-results {
    min-height: 100px;
}

.search-placeholder {
    text-align: center;
    color: #999;
    padding: 40px 0;
    font-size: 14px;
}

.search-result-item {
    padding: 15px;
    border-bottom: 1px solid #f0f0f0;
    cursor: pointer;
    transition: background-color 0.3s;
}

.search-result-item:hover {
    background-color: #f9f9f9;
}

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

.search-result-title {
    font-size: 16px;
    color: #333;
    margin-bottom: 5px;
    font-weight: 500;
}

.search-result-desc {
    font-size: 14px;
    color: #666;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

.secondary-nav {
    display: flex;
    gap: 60px;
    flex-wrap: nowrap;
    justify-content: flex-start;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 18px;
    color: #555;
}

.secondary-nav-link {
    text-decoration: none;
    color: inherit;
    padding: 2px 0;
    transition: color 0.3s;
    white-space: nowrap;
    position: relative;
    font-weight: 300;
}

.secondary-nav-link:hover {
    color: #000;
}

.secondary-nav-link.active {
    color: #333;
    font-weight: 600;
}

.secondary-nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 16px;
    background-image: url('images/1self-introduction_03.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}

/* Main Content */
.main-content {
    width: 100%;
    padding: 40px 60px;
}

.grid-container {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.grid-item-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.grid-item {
    border: 4px solid;
    border-radius: 8px;
    position: relative;
    cursor: pointer;
    transition: transform 0.3s, box-shadow 0.3s;
    min-height: 340px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background-color: #fff;
}

.grid-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

/* Self Introduction Card */
.self-intro {
    border-color: #4A90E2;
}

/* Board Game Card */
.board-game {
    border-color: #7ED321;
}

/* Video Game Card */
.video-game {
    border-color: #E94B3C;
}

/* Research Card */
.research {
    border-color: #4A90E2;
}

/* Card Content */
.card-content {
    flex: 1;
    position: relative;
    padding: 0;
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 30px;
    border-bottom: 4px solid currentColor;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
    color: inherit;
}

.card-title {
    font-size: 24px;
    font-weight: 600;
    margin: 0;
}

.card-icon {
    margin: 0;
}

.icon-placeholder {
    margin: 20px 0;
    align-self: center;
}

.card-arrow {
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-left: 20px;
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 18px;
    border: 2px solid currentColor;
    border-radius: 50%;
}

.card-arrow::before {
    content: "\f35d";
}

.grid-item .card-content .card-image {
    width: 100%;
    height: 100%;
    min-height: 280px;
    background-size: cover;
    background-position: center;
}

.self-intro .card-header,
.self-intro .card-arrow {
    color: #4A90E2;
}

.self-intro .card-image {
    background-image: url('images/SELF-INTRODUCTION.png');
}

.board-game .card-header,
.board-game .card-arrow {
    color: #217a19;
}

.board-game .card-image {
    background-image: url('images/MY-BOARD-GAME.png');
}

.video-game .card-header,
.video-game .card-arrow {
    color: #E94B3C;
}

.video-game .card-image {
    background-image: url('images/MY-VIDEO-GAME.png');
}

.research .card-header,
.research .card-arrow {
    color: #4A90E2;
}

.research .card-image {
    background-image: url('images/MY-RESEARCH-FINDINGS.png');
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        padding: 15px 20px;
    }

    .header-top {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .primary-nav {
        width: 100%;
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 20px;
        letter-spacing: 0.12em;
        font-size: 16px;
    }

    .nav-divider {
        display: none;
    }

    .nav-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
        width: 100%;
    }

    .search-btn {
        align-self: flex-end;
    }

    .secondary-nav {
        gap: 25px;
        flex-wrap: wrap;
        font-size: 16px;
    }

    .secondary-nav-link.active::after {
        width: 18px;
        height: 12px;
        bottom: -10px;
    }

    .main-content {
        padding: 20px;
    }

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

    .grid-item {
        min-height: 260px;
    }

    .card-title {
        font-size: 20px;
    }

    .contact-banner {
        flex-direction: column;
        text-align: center;
        gap: 28px;
    }

    .contact-content {
        max-width: none;
    }

    .email-link,
    .email-underline,
    .contact-label {
        margin-left: auto;
        margin-right: auto;
    }

    /* Search Modal Tablet */
    .search-modal-content {
        width: 90%;
    }

    .search-modal-header {
        padding: 25px 25px 18px;
    }

    .search-modal-body {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 10px 15px;
    }

    .logo-img {
        height: 40px;
    }

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

    .secondary-nav-link {
        font-size: 12px;
    }

    .secondary-nav-link.active::after {
        width: 16px;
        height: 10px;
        bottom: -8px;
    }

    .main-content {
        padding: 15px;
    }

    .grid-item {
        min-height: 220px;
    }

    .card-title {
        font-size: 18px;
    }

    .contact-banner {
        padding: 30px 22px;
        gap: 18px;
    }

    .email-link {
        font-size: 32px;
    }

    /* Search Modal Mobile */
    .search-modal-content {
        width: 95%;
        max-height: 90vh;
    }

    .search-modal-header {
        padding: 20px 20px 15px;
    }

    .search-modal-header h2 {
        font-size: 20px;
    }

    .search-modal-body {
        padding: 20px;
    }

    .search-input {
        padding: 12px 12px 12px 40px;
        font-size: 14px;
    }

    .search-modal-close {
        top: 10px;
        right: 10px;
        font-size: 20px;
    }
}

/* Page Banner Styles */
.page-banner {
    width: 100%;
    padding: 60px 40px;
    margin-bottom: 40px;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.self-intro-banner {
    background: linear-gradient(135deg, #E3F2FD 0%, #FFF9C4 100%);
    border: 4px solid #4A90E2;
}

.board-game-banner {
    background: linear-gradient(to right, 
        repeating-linear-gradient(45deg, #fff 0px, #fff 20px, #FFB6C1 20px, #FFB6C1 40px) 0% 100%,
        repeating-linear-gradient(-45deg, #7ED321 0px, #7ED321 20px, #fff 20px, #fff 40px) 50% 100%
    );
    background-size: 50% 100%, 50% 100%;
    background-position: left, right;
    background-repeat: no-repeat;
    border: 4px solid #7ED321;
}

.video-game-banner {
    background-color: #FFEB3B;
    border: 4px solid #E94B3C;
}

.video-hero {
    border: 4px solid #E94B3C;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 40px;
    background-color: #fff;
}

.video-hero-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 30px;
    border-bottom: 4px solid #E94B3C;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
    color: #E94B3C;
}

.video-hero-title {
    font-size: 28px;
    margin: 0;
    font-weight: 600;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
}

.hero-arrow {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 3px solid currentColor;
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 22px;
}

.hero-arrow::before {
    content: "\f35d";
}

.video-hero-visual {
    background-color: #FFE900;
    padding: 0;
}

.video-hero-visual img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.self-hero {
    border: 4px solid #4A90E2;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 40px;
    background-color: #fff;
}

.self-hero-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 30px;
    border-bottom: 4px solid #4A90E2;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
    color: #4A90E2;
}

.self-hero-title {
    font-size: 32px;
    margin: 0;
    font-weight: 600;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
}

.self-hero .hero-arrow {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 3px solid currentColor;
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 22px;
}

.self-hero .hero-arrow::before {
    content: "\f35d";
}

.self-hero-visual {
    background-color: #66b3ff;
    padding: 0;
}

.self-hero-visual img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Self Introduction - single full image section */
.intro-full-image {
    margin: 40px 0 60px;
    overflow: hidden;
    border-radius: 8px;
}
.intro-full-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* Self Introduction - text left + right background image */
.intro-text-bg {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 32px;
    align-items: start;
    margin: 20px 0 40px;
}

.intro-text {
    color: #666;
    font-size: 30px;
    line-height: 40px;
    max-width: 700px;
}

.intro-text p { margin: 0 0 40px 0; }

.intro-right-img {
    display: flex;
    justify-content: flex-end;
    align-items: flex-start;
}

.intro-right-img img {
    max-width: 100%;
    height: auto;
    display: block;
    margin-bottom: 30px;
}

@media (max-width: 1024px) {
    .intro-text-bg {
        grid-template-columns: 1fr;
    }
    .intro-right-bg {
        min-height: 200px;
        background-position: top center;
    }
}

/* Left image + right text (quote) */
.intro-leftimg-text {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 32px;
    align-items: start;
    margin: 20px 0 40px;
}

.intro-left-imgwrap img {
    width: 100%;
    height: auto;
    display: block;
}

.intro-right-text {
    color: #666;
    font-size: 30px;
    line-height: 40px;
}

@media (max-width: 1024px) {
    .intro-leftimg-text {
        grid-template-columns: 1fr;
    }
}

/* Two images side by side */
.intro-two-images {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
    margin: 20px 0 20px;
}

.intro-two-images img {
    width: 100%;
    height: auto;
    display: block;
}

/* Full width text after two images */
.intro-wide-text {
    margin: 0 0 40px;
}
.intro-wide-text p {
    color: #666;
    font-size: 30px;
    line-height: 1.9;
}

@media (max-width: 1024px) {
    .intro-two-images {
        grid-template-columns: 1fr;
    }
}

/* Mixed grid section */
.intro-mixed-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
    margin: 20px 0 40px;
}
.mixed-left,
.mixed-right {
    display: grid;
    grid-template-rows: auto auto auto;
    gap: 16px;
}
.mixed-left-topimg img,
.mixed-left-bottomimg img,
.mixed-right-img img {
    width: 100%;
    height: auto;
    display: block;
}
.mixed-left-text p,
.mixed-right-text p {
    color: #666;
    font-size: 30px;
    line-height: 1.85;
    margin: 0;
}

@media (max-width: 1024px) {
    .intro-mixed-grid {
        grid-template-columns: 1fr;
    }
}

/* Split: left image+text, right image */
.intro-image-text-image {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
    margin: 20px 0 40px;
}
.iti-left img,
.iti-right img {
    width: 100%;
    height: auto;
    display: block;
}
.iti-left p {
    color: #666;
    font-size: 30px;
    line-height: 1.85;
    margin: 14px 0 0;
}
@media (max-width: 1024px) {
    .intro-image-text-image {
        grid-template-columns: 1fr;
    }
}

/* ========================
   Self-introduction mobile tweaks
   ======================== */
@media (max-width: 768px) {
    .self-hero-header { padding: 14px 18px; }
    .self-hero-title { font-size: 24px; letter-spacing: 0.08em; }

    .intro-full-image { margin: 24px 0 36px; }

    .intro-text-bg { gap: 18px; margin: 12px 0 28px; }
    .intro-text { font-size: 20px; line-height: 28px; max-width: 100%; }
    .intro-text p { margin-bottom: 22px; }

    .intro-leftimg-text,
    .intro-two-images,
    .intro-mixed-grid,
    .intro-image-text-image,
    .intro-split-leftimg { gap: 18px; margin: 16px 0 32px; }

    .intro-right-text { font-size: 20px; line-height: 28px; }
    .intro-wide-text { margin: 0 0 28px; }
    .intro-wide-text p { font-size: 20px; line-height: 1.75; }
    
    .intro-body { font-size: 20px; line-height: 28px; }
    .mixed-left-text p,
    .mixed-right-text p { font-size: 20px; }
    .iti-left p { font-size: 20px; }
    .split-left-text p,
    .split-right p { font-size: 20px; }

    .intro-two-images { grid-template-columns: 1fr; }
    .intro-mixed-grid { grid-template-columns: 1fr; }
    .intro-image-text-image { grid-template-columns: 1fr; }
    .intro-split-leftimg { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
    .intro-text { font-size: 18px; line-height: 26px; }
    .intro-right-text { font-size: 18px; line-height: 26px; }
    .intro-wide-text p { font-size: 18px; }
    .intro-body { font-size: 18px; line-height: 26px; }
    .mixed-left-text p,
    .mixed-right-text p { font-size: 18px; }
    .iti-left p { font-size: 18px; }
    .split-left-text p,
    .split-right p { font-size: 18px; }
    .intro-note-text { font-size: 16px; line-height: 1.6; }
    .intro-note-icon { width: 56px; height: 56px; bottom: -24px; }
}

/* -------- Global image reveal animation -------- */
.reveal-img {
    opacity: 0;
    transform: translateY(12px) scale(0.99);
    transition: opacity 0.8s ease, transform 0.8s ease;
    will-change: opacity, transform;
    transition-delay: var(--delay, 0s);
}
.reveal-img.is-visible {
    opacity: 1;
    transform: none;
}
@media (prefers-reduced-motion: reduce) {
    .reveal-img { opacity: 1; transform: none; transition: none; }
}
/* Split: left text+image, right text */
.intro-split-leftimg {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
    margin: 20px 0 40px;
}

.split-left-text p,
.split-right p {
    color: #666;
    font-size: 30px;
    line-height: 1.85;
    margin: 0 0 18px 0;
}

.split-left-image img {
    width: 100%;
    height: auto;
    display: block;
    margin-top: 16px;
}

@media (max-width: 1024px) {
    .intro-split-leftimg {
        grid-template-columns: 1fr;
    }
}
/* Self Introduction - Feature Section */
.intro-feature {
    margin: 60px 0;
}

.intro-grid {
    position: relative;
    display: grid;
    grid-template-columns: 600px 600px;
    grid-template-rows: auto auto auto;
    gap: 32px 32px;
    justify-content: space-between;
    align-items: start;
}

.intro-band { display: none; }

/* 使用左侧图片生成精确位置的横向线，距离底部80px，并横跨到右图 */
.intro-photo.left::before,
.intro-photo.left::after { display: none; content: none; }

.intro-photo {
    position: relative;
    overflow: hidden;
    z-index: 0;
    width: 600px;
}

.intro-photo img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.intro-photo.left { 
    grid-column: 1 / 2; 
    grid-row: 1 / 2; 
}
.intro-photo.right { 
    grid-column: 2 / 3; 
    grid-row: 1 / 3;          /* 底部与副标题所在行底部对齐 */
    align-self: end;           /* 底部与标题行对齐 */
    margin-top: 80px;          /* 顶部留白 */
}

.intro-headline {
    grid-column: 1 / 3;
    grid-row: 2 / 3;
    margin-top: -20px;
    position: relative;
    z-index: 2;
}

.intro-hello {
    grid-column: 1 / 2;
    grid-row: 1 / 2;
    align-self: end;
    font-size: 66px;
    color: #ffffff;
    margin: 0 0 -10px 0; /* 向下偏移10px */
    font-weight: 900;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
    z-index: 3;
    transform: none;
}

.intro-title {
    font-size: 54px;
    line-height: 1.15;
    color: #333;
    margin: 0;
    font-weight: 700;
}

.intro-body {
    grid-column: 1 / 2;
    grid-row: 3 / 4;
    color: #666;
    line-height: 1.85;
    font-size: 30px;
}

.intro-body p {
    margin: 0 0 18px 0;
}

.intro-stairs {
    grid-column: 2 / 3;
    grid-row: 2 / 3;
    background: url('images/1self-introduction_14.png') top right / contain no-repeat;
    height: 220px;
}

.intro-note {
    grid-column: 2 / 3;
    grid-row: 3 / 4;
}

.intro-note-bg {
    position: relative;
    background: url('images/1self-introduction_16.png') center/cover no-repeat;
    border-radius: 6px;
    padding: 26px 26px 34px;
    min-height: 220px;
    display: flex;
    align-items: flex-end;
}

.intro-note-text {
    background: rgba(43, 91, 227, 0.95);
    color: #fff;
    padding: 20px 18px;
    border-radius: 6px;
    font-size: 18px;
    line-height: 1.65;
    box-shadow: 0 8px 18px rgba(0,0,0,0.12);
}

.intro-note-icon {
    position: absolute;
    left: 18px;
    bottom: -30px;
    width: 68px;
    height: 68px;
}

.intro-note-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.intro-diagonal {
    display: none;
}

@media (max-width: 1024px) {
    .intro-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto auto auto;
    }
    .intro-photo { width: 100%; }
    .intro-photo.left { grid-column: 1 / -1; }
    .intro-photo.right { grid-column: 1 / -1; margin-top: 0; align-self: start; }
    .intro-headline { grid-column: 1 / -1; }
    .intro-body { grid-column: 1 / -1; }
    .intro-note { grid-column: 1 / -1; }
    .intro-diagonal { grid-column: 1 / -1; }
    .intro-title { font-size: 36px; }
    .intro-hello { font-size: 32px; }
    .intro-band { top: 38%; }
}

.research-hero {
    border: 4px solid #4A90E2;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 40px;
    background-color: #fff;
}

.research-hero-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 30px;
    border-bottom: 4px solid #4A90E2;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
    color: #4A90E2;
}

.research-hero-title {
    font-size: 32px;
    margin: 0;
    font-weight: 600;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
}

.research-hero .hero-arrow {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 3px solid currentColor;
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 22px;
}

.research-hero .hero-arrow::before {
    content: "\f35d";
}

.research-hero-visual {
    background-color: #E3F2FD;
    padding: 0;
}

.research-hero-visual img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.research-feature {
    margin: 40px 0;
}

.research-feature-frame {
    border: none;
    border-radius: 8px;
    overflow: hidden;
    background: #fff;
}

.research-feature-frame img {
    display: block;
    width: 100%;
    height: auto;
    object-fit: cover;
}
.board-hero {
    border: 4px solid #217a19;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 40px;
    background-color: #fff;
}

.board-hero-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 30px;
    border-bottom: 4px solid #217a19;
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
    color: #217a19;
}

.board-hero-title {
    font-size: 32px;
    margin: 0;
    font-weight: 600;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
}

.board-hero .hero-arrow {
    width: 40px;
    height: 40px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 3px solid currentColor;
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 22px;
}

.board-hero .hero-arrow::before {
    content: "\f35d";
}

.board-hero-visual {
    background-color: #1e8d59;
    padding: 0;
}

.board-hero-visual img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Board page scroll accordion */
.scroll-accordion {
    margin: 40px 0 60px;
}

.board-scroll .scroll-entry {
    border: none;
    overflow: hidden;
    background: #fff;
    margin-bottom: 16px;
    transition: box-shadow 0.3s;
}

.board-scroll .scroll-entry:hover {
    box-shadow: 0 10px 20px rgba(0,0,0,0.12);
}

.board-scroll .scroll-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 22px;
    border: 4px solid #217a19;
    color: #217a19;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
}

.board-scroll .scroll-title {
    margin: 0;
    font-size: 24px;
    font-weight: 600;
}

.board-scroll .scroll-index {
    font-weight: 700;
}

.board-scroll .scroll-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.6s ease;
    border-left: 4px solid #217a19;
    border-right: 4px solid #217a19;
}

.board-scroll .scroll-entry.active .scroll-panel {
    max-height: 2000px; /* allow natural image height */
    border-bottom: 4px solid #217a19;
}

.board-scroll .scroll-panel img {
    width: 100%;
    height: auto;
    object-fit: cover;
    display: block;
    margin: 0;
}

@media (max-width: 768px) {
    .board-scroll .scroll-title { font-size: 18px; }
    .board-scroll .scroll-entry.active .scroll-panel { 
        max-height: none;
        height: auto;
    }
    .board-scroll .scroll-panel img {
        object-fit: contain;
        width: 100%;
        height: auto;
    }
}

/* Other projects (board page, final section) */
.other-projects {
    margin: 60px 0 10px;
}

.other-heading {
    font-size: 16px;
    font-weight: 700;
    letter-spacing: 0.22em;
    color: #2f2f2f;
    text-transform: uppercase;
    margin: 0 0 16px;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
}

.op-item {
    margin-bottom: 54px;
}

.op-hero {
    position: relative;
    width: 100%;
    aspect-ratio: 1320 / 430;
    overflow: hidden;
    border-radius: 4px;
}

.op-hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.op-title {
    display: none;
}

.op-desc {
    margin: 20px auto 0;
    color: #6a6a6a;
    line-height: 1.8;
    font-size: 30px;
    max-width: 1540px;
    text-align: left;
}

@media (max-width: 768px) {
    .op-title { display: none; }
    .op-hero { aspect-ratio: 16 / 9; border-radius: 3px; }
    .op-desc { font-size: 20px; line-height: 1.75; padding: 0 12px; max-width: 92%; text-align: left; }
}

.carousel-section {
    --carousel-color: #7ED321;
    --carousel-gradient: linear-gradient(180deg, rgba(126, 211, 33, 0.15) 0%, rgba(255,255,255,0) 100%);
    border: 4px solid var(--carousel-color);
    border-radius: 8px;
    background: #fff;
    margin-bottom: 60px;
    overflow: hidden;
}

.carousel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 30px;
    border-bottom: 4px solid var(--carousel-color);
}

.carousel-title {
    font-size: 30px;
    color: var(--carousel-color);
    margin: 0;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
}

.carousel-indicators {
    display: flex;
    gap: 18px;
}

.carousel-indicator {
    background: none;
    border: none;
    font-size: 22px;
    letter-spacing: 0.12em;
    color: #d3d3d3;
    cursor: pointer;
    font-family: 'AlongSans', 'Futura', 'Century Gothic', 'Arial', sans-serif;
    font-weight: 600;
    transition: color 0.3s;
}

.carousel-indicator.active {
    color: var(--carousel-color);
}

.carousel-body {
    position: relative;
    background: var(--carousel-gradient);
}

.carousel-track {
    width: 100%;
    position: relative;
    aspect-ratio: 1836 / 458;
    min-height: 260px;
}

.carousel-slide {
    position: absolute;
    inset: 0;
    opacity: 0;
    transform: scale(0.97);
    transition: opacity 0.5s cubic-bezier(0.4, 0, 0.2, 1), transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    will-change: opacity, transform;
}

.carousel-slide.active {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
    z-index: 1;
}

.carousel-slide img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: cover;
}

.carousel-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: 3px solid var(--carousel-color);
    background: rgba(255,255,255,0.95);
    color: var(--carousel-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 8px 18px rgba(0,0,0,0.25);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, color 0.2s ease;
    z-index: 2;
    will-change: transform;
}

.carousel-control:hover {
    background: var(--carousel-color);
    color: #fff;
    transform: translateY(-50%) scale(1.05);
    box-shadow: 0 12px 24px rgba(0,0,0,0.35);
}

.carousel-control:active {
    transform: translateY(-50%) scale(0.98);
}

.carousel-control.prev {
    left: 24px;
}

.carousel-control.next {
    right: 24px;
}

.data-lost-carousel {
    --carousel-color: #7ED321;
    --carousel-gradient: linear-gradient(180deg, rgba(126, 211, 33, 0.15) 0%, rgba(255,255,255,0) 100%);
}

.media-evolution-carousel {
    --carousel-color: #FF9800;
    --carousel-gradient: linear-gradient(180deg, rgba(255, 152, 0, 0.15) 0%, rgba(255,255,255,0) 100%);
}

.narrative-accordion {
    margin: 40px 0 60px;
}

.accordion-entries {
    border: 3px solid #E94B3C;
    border-radius: 6px;
    overflow: hidden;
}

.accordion-entry + .accordion-entry {
    border-top: 3px solid #E94B3C;
}

.accordion-toggle {
    width: 100%;
    background: none;
    border: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 18px 26px;
    color: #E94B3C;
    font-family: 'Futura', 'Century Gothic', 'Arial', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 18px;
    cursor: pointer;
    background-color: #fff;
    transition: background 0.3s;
}

.accordion-entry.active .accordion-toggle {
    background: #FFECE8;
}

.accordion-panel {
    overflow: hidden;
    max-height: 0;
    padding: 0;
    transition: max-height 0.5s ease;
}

.accordion-entry.active .accordion-panel {
    max-height: 700px;
}

.accordion-panel img {
    width: 100%;
    display: block;
    transform: translateY(-8px);
    transition: transform 0.4s ease;
}

.accordion-entry.active .accordion-panel img {
    transform: translateY(0);
}

.accordion-bottom {
    margin-top: 30px;
}

.accordion-bottom img {
    width: 100%;
    display: block;
    border: 3px solid #E94B3C;
    border-radius: 6px;
}

.research-banner {
    background-color: #FFB6C1;
    border: 4px solid #4A90E2;
}

.page-title {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    color: inherit;
}

.banner-arrow {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 32px;
    color: inherit;
}

.banner-icon {
    text-align: center;
    margin-top: 20px;
}

.banner-img {
    width: 200px;
    height: 200px;
    object-fit: contain;
}

.banner-pattern {
    display: flex;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
}

.chessboard {
    width: 50%;
    background: repeating-linear-gradient(
        0deg,
        #fff 0px, #fff 50px,
        #FFB6C1 50px, #FFB6C1 100px
    );
}

.striped-pattern {
    width: 50%;
    background: repeating-linear-gradient(
        -45deg,
        #7ED321 0px, #7ED321 20px,
        #fff 20px, #fff 40px
    );
}

.banner-pieces {
    position: absolute;
    right: 100px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    gap: 20px;
}

.game-piece {
    width: 40px;
    height: 60px;
    border-radius: 20px 20px 5px 5px;
}

.white-piece {
    background: #fff;
    border: 3px solid #FFB6C1;
}

.black-piece {
    background: #000;
}

.banner-icons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 40px;
    margin-top: 40px;
}

.game-icon {
    font-size: 80px;
    color: #fff;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.2);
}

.cloud-icon {
    color: #fff;
}

.controller-icon {
    color: #fff;
}

.sun-icon {
    color: #E94B3C;
}

.banner-flasks {
    display: flex;
    justify-content: center;
    align-items: flex-end;
    gap: 30px;
    margin-top: 40px;
}

.flask-img {
    width: 100%;
    display: block;
}

/* Content Section Styles */
.content-section {
    margin-bottom: 60px;
}

.section-heading {
    font-size: 36px;
    font-weight: bold;
    margin-bottom: 30px;
    color: #333;
}

.highlight {
    color: #4A90E2;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    margin: 30px 0;
}

.image-item {
    width: 100%;
}

.image-item.full-width {
    grid-column: 1 / -1;
}

.content-img {
    width: 100%;
    border-radius: 8px;
    display: block;
}

.text-content {
    margin: 30px 0;
    line-height: 1.8;
    color: #666;
    font-size: 30px;
}

.text-content.two-column {
    column-count: 2;
    column-gap: 40px;
}

.chat-bubble {
    background: #E3F2FD;
    border: 2px solid #4A90E2;
    border-radius: 20px;
    padding: 20px;
    margin: 30px 0;
    position: relative;
    max-width: 400px;
    margin-left: auto;
}

.chat-bubble::before {
    content: '';
    position: absolute;
    bottom: -15px;
    left: 30px;
    width: 0;
    height: 0;
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
    border-top: 15px solid #4A90E2;
}

.chat-bubble::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 32px;
    width: 0;
    height: 0;
    border-left: 13px solid transparent;
    border-right: 13px solid transparent;
    border-top: 13px solid #E3F2FD;
}

.chat-bubble p {
    margin: 0;
    color: #333;
    font-style: italic;
}

/* Project Section Styles */
.project-section {
    margin-bottom: 60px;
}

.project-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.project-title {
    font-size: 36px;
    font-weight: bold;
    color: #7ED321;
}

.project-number {
    font-size: 24px;
    color: #7ED321;
    font-weight: bold;
}

.project-numbers {
    display: flex;
    gap: 10px;
}

.project-numbers span {
    font-size: 18px;
    color: #7ED321;
    font-weight: bold;
}

.project-panel {
    background: #f9f9f9;
    padding: 40px;
    border-radius: 8px;
    margin-bottom: 30px;
    position: relative;
}

.newspaper-panel {
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(0,0,0,0.05) 2px, rgba(0,0,0,0.05) 4px);
}

.panel-title {
    font-size: 32px;
    font-weight: bold;
    color: #E94B3C;
    margin-bottom: 20px;
}

.panel-subtitle {
    font-size: 24px;
    color: #666;
    font-weight: normal;
}

.project-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin: 30px 0;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #666;
}

.info-item i {
    color: #7ED321;
    font-size: 20px;
}

.project-description {
    margin: 30px 0;
    line-height: 1.8;
    color: #666;
    font-size: 30px;
}

.project-visuals {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 30px;
}

.project-img {
    max-width: 300px;
    width: 100%;
}

.accordion-sections {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 30px 0;
}

.accordion-item {
    background: #7ED321;
    color: #fff;
    padding: 20px;
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
}

.accordion-item:hover {
    background: #6bb81a;
}

.accordion-number {
    font-size: 18px;
}

.game-phases {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin: 30px 0;
}

.phase-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: #fff;
    border-radius: 8px;
}

.phase-item i {
    color: #7ED321;
    font-size: 24px;
}

.flowchart {
    margin-top: 40px;
}

.flowchart h4 {
    margin-bottom: 20px;
    color: #333;
}

.flowchart-diagram {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.flow-item {
    background: #7ED321;
    color: #fff;
    padding: 15px 25px;
    border-radius: 8px;
    font-weight: bold;
}

.flow-arrow {
    font-size: 24px;
    color: #7ED321;
    font-weight: bold;
}

/* Project Showcase Styles */
.project-showcase {
    margin-bottom: 60px;
    padding: 40px;
    border-radius: 8px;
}

.punch-out {
    background: #666;
}

.seasonal-treasure {
    background: #FFB6C1;
}

.data-lost {
    border: 4px solid #7ED321;
    background: #fff;
}

.media-evolution {
    border: 4px solid #FF9800;
    background: #fff;
}

.showcase-header {
    display: flex;
    justify-content: flex-end;
    margin-bottom: 20px;
}

.showcase-numbers {
    display: flex;
    gap: 10px;
}

.showcase-numbers span {
    font-size: 16px;
    color: #7ED321;
    font-weight: bold;
}

.showcase-content {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.showcase-title {
    font-size: 48px;
    font-weight: bold;
    color: #fff;
}

.data-lost .showcase-title,
.media-evolution .showcase-title {
    color: #7ED321;
}

.media-evolution .showcase-title {
    color: #FF9800;
}

.showcase-subtitle {
    font-size: 18px;
    color: #666;
    margin: 10px 0;
}

.showcase-question {
    font-size: 20px;
    color: #333;
    font-style: italic;
    margin: 20px 0;
}

.showcase-visual {
    text-align: center;
}

.showcase-img {
    max-width: 400px;
    width: 100%;
}

.showcase-visuals {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin-top: 20px;
}

.showcase-card {
    max-width: 300px;
    width: 100%;
}

.showcase-description {
    max-width: 600px;
    line-height: 1.8;
    color: #fff;
    font-size: 30px;
}

.data-lost .showcase-description,
.media-evolution .showcase-description {
    color: #666;
}

/* Narrative Design Styles */
.narrative-banner {
    display: grid;
    grid-template-columns: 1fr 2fr 2fr;
    gap: 30px;
    margin: 40px 0;
    padding: 40px;
    background: #f9f9f9;
    border-radius: 8px;
}

.banner-left h3 {
    font-size: 24px;
    color: #333;
    margin: 0;
}

.banner-device {
    width: 100%;
    border-radius: 8px;
}

.banner-text {
    margin-bottom: 20px;
}

.banner-text h4 {
    font-size: 20px;
    color: #333;
    margin-bottom: 10px;
}

.banner-text p {
    color: #666;
    line-height: 1.6;
    font-size: 30px;
}

.narrative-sections {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin: 30px 0;
}

.narrative-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    border-bottom: 1px solid #e0e0e0;
}

.narrative-label {
    font-size: 18px;
    color: #333;
}

.narrative-number {
    font-size: 18px;
    color: #E94B3C;
    font-weight: bold;
}

.dominant-section {
    margin: 60px 0;
    padding: 40px;
    background: #f9f9f9;
    border-radius: 8px;
}

.dominant-title {
    font-size: 48px;
    text-align: center;
    margin-bottom: 40px;
    color: #333;
}

.dominant-large {
    font-size: 64px;
    color: #E94B3C;
}

.dominant-stories {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.story-card {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    border: 2px solid #E94B3C;
}

.story-card h3 {
    color: #E94B3C;
    font-size: 20px;
    margin: 0;
    line-height: 1.6;
}

/* Research Page Styles */
.research-content {
    margin: 60px auto;
    max-width: 1540px;
}

.research-main-title {
    font-size: 64px;
    color: #2b5be3;
    letter-spacing: 0.02em;
    margin-bottom: 30px;
    font-weight: 800;
}

.research-subtitle {
    font-size: 36px;
    color: #333;
    font-weight: 700;
    margin-bottom: 40px;
    line-height: 1.6;
    max-width: 100%;
    letter-spacing: 0.01em;
}

.research-layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
    align-items: start;
}

.research-text {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.research-paragraph {
    line-height: 1.9;
    color: #666;
    font-size: 30px;
    max-width: 100%;
}

.research-visual {
    position: relative;
}

.book-cover {
    position: relative;
    z-index: 2;
}

.book-img {
    width: 100%;
    max-width: 300px;
    border-radius: 4px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.book-spine {
    position: absolute;
    left: -30px;
    top: 0;
    bottom: 0;
    width: 30px;
    background: #1a237e;
    color: #fff;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 10px;
    padding: 10px 5px;
    border-radius: 4px 0 0 4px;
    font-size: 12px;
}

.book-background {
    position: absolute;
    top: 50px;
    left: 50px;
    z-index: 1;
    opacity: 0.3;
}

.bg-img {
    width: 100%;
    max-width: 400px;
    border-radius: 8px;
    filter: blur(5px);
}

/* Contact Page Styles */
.contact-banner {
    width: 100%;
    height: 660px;
    background: #FFE900;
    border: none;
    border-radius: 10px;
    padding: 50px 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
    overflow: hidden;
}

.contact-content {
    flex: 1;
    max-width: 500px;
    z-index: 1;
}

.contact-label {
    font-size: 18px;
    letter-spacing: 0.28em;
    color: #4A90E2;
    margin: 0 0 18px;
    font-family: 'AlongSans', 'Microsoft YaHei', 'Arial', sans-serif;
}

.email-link {
    font-size: 56px;
    color: #2b5be3;
    text-decoration: none;
    font-family: 'AlongSans', 'Microsoft YaHei', 'Arial', sans-serif;
    font-weight: 600;
    letter-spacing: 0.02em;
    transition: color 0.3s;
    display: block;
}

.email-link:hover {
    color: #173aac;
}

.email-underline {
    display: block;
    width: 100%;
    height: 4px;
    background-color: #2b5be3;
    margin-top: 14px;
}

.contact-visual {
    flex: 0 0 auto;
    z-index: 1;
}

.contact-img {
    width: var(--placeholder-size, 320px);
    height: var(--placeholder-size, 320px);
    border: none;
    border-radius: 0;
}

.contact-envelope-bg {
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    pointer-events: none;
    background-image: url('images/5Contact-us_email_03.png');
    background-repeat: no-repeat;
    background-position: 35% center;
    background-size: auto 60%;
    opacity: 0.4;
    z-index: 0;
}

/* Footer Styles */
.footer {
    width: 100%;
    padding: 40px;
    text-align: center;
    background: #fff;
    border-top: 1px solid #e0e0e0;
    margin-top: 60px;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.social-icon {
    font-size: 24px;
    color: #333;
    transition: color 0.3s;
}

.social-icon:hover {
    color: #4A90E2;
}

.copyright {
    color: #666;
    font-size: 14px;
    margin: 0;
}


/* Responsive Styles for New Pages */
@media (max-width: 1024px) {
    .main-content {
        padding: 30px 30px;
    }

    /* Research page hero */
    .research-hero-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    .research-hero-title { font-size: 26px; }
    .research-hero .hero-arrow { width: 36px; height: 36px; font-size: 20px; }

    /* Research page content */
    .research-feature { margin: 30px 0; }
    .research-main-title { 
        font-size: 48px; 
        margin-bottom: 24px;
    }
    .research-subtitle { 
        font-size: 30px; 
        margin-bottom: 32px;
        max-width: 100%; 
    }

    /* Board page hero */
    .board-hero-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }
    .board-hero-title {
        font-size: 26px;
    }
    .board-hero .hero-arrow {
        width: 36px;
        height: 36px;
        font-size: 20px;
    }

    /* Board page scroll accordion */
    .board-scroll .scroll-header {
        padding: 14px 18px;
    }
    .board-scroll .scroll-title {
        font-size: 20px;
    }
    .board-scroll .scroll-index {
        font-size: 18px;
    }

    .video-hero-header {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .video-hero-title {
        font-size: 24px;
    }

    .hero-arrow {
        margin-left: 0;
    }

    .carousel-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .carousel-title {
        font-size: 26px;
    }

    .carousel-indicators {
        flex-wrap: wrap;
        gap: 10px;
    }

    .carousel-track {
        min-height: 220px;
    }

    .carousel-control {
        width: 48px;
        height: 48px;
    }

    .accordion-toggle {
        padding: 14px 18px;
        font-size: 16px;
        letter-spacing: 0.1em;
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 32px;
    }

    /* Research page hero */
    .research-hero-title { font-size: 22px; }
    .research-hero .hero-arrow { display: none; }

    .research-main-title { 
        font-size: 36px; 
        margin-bottom: 20px;
    }
    .research-subtitle { 
        font-size: 28px; 
        margin-bottom: 28px;
        line-height: 1.6; 
    }
    .research-paragraph { font-size: 20px; line-height: 1.8; }
    .research-feature { margin: 20px 0; }
    
    /* 所有页面正文段落 - 手机端 */
    .text-content { font-size: 20px; }
    .project-description { font-size: 20px; }
    .showcase-description { font-size: 20px; }
    .banner-text p { font-size: 20px; }
    .op-desc { font-size: 20px; }
    .chat-bubble p { font-size: 20px; }
    .showcase-subtitle { font-size: 16px; }
    .showcase-question { font-size: 18px; }
    .mixed-left-text p,
    .mixed-right-text p { font-size: 20px; }
    .iti-left p { font-size: 20px; }
    .split-left-text p,
    .split-right p { font-size: 20px; }

    /* Board page hero */
    .board-hero-title {
        font-size: 22px;
    }
    .board-hero .hero-arrow { display: none; }
    .board-hero-visual { background-color: #1e8d59; }

    /* Board page scroll accordion */
    .board-scroll .scroll-header {
        padding: 12px 14px;
        border-width: 3px;
    }
    .board-scroll .scroll-title {
        font-size: 18px;
        letter-spacing: 0.1em;
    }
    .board-scroll .scroll-index {
        font-size: 16px;
    }
    .board-scroll .scroll-panel {
        border-left-width: 3px;
        border-right-width: 3px;
    }
    .board-scroll .scroll-entry.active .scroll-panel {
        border-bottom-width: 3px;
        max-height: none;
        height: auto;
    }
    .board-scroll .scroll-panel img {
        object-fit: contain;
    }

    .banner-icons {
        gap: 20px;
    }

    .game-icon {
        font-size: 50px;
    }

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

    .text-content.two-column {
        column-count: 1;
    }

    .project-info {
        grid-template-columns: 1fr;
    }

    .narrative-banner {
        grid-template-columns: 1fr;
    }

    .carousel-indicator {
        font-size: 18px;
    }

    .carousel-control {
        width: 44px;
        height: 44px;
    }

    .carousel-track {
        min-height: 200px;
    }

    .dominant-stories {
        grid-template-columns: 1fr;
    }

    .research-layout {
        grid-template-columns: 1fr;
    }

    .contact-banner {
        flex-direction: column;
        gap: 30px;
    }

    .email-link {
        font-size: 28px;
    }

    .accordion-panel {
        padding: 0 10px;
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: 20px 18px;
    }

    /* Research page text */
    .research-main-title { 
        font-size: 28px; 
        margin-bottom: 18px;
    }
    .research-subtitle { 
        font-size: 26px; 
        margin-bottom: 24px;
        line-height: 1.5;
    }
    .research-paragraph { font-size: 18px; }
    
    /* 所有页面正文段落 - 小屏手机 */
    .text-content { font-size: 18px; }
    .project-description { font-size: 18px; }
    .showcase-description { font-size: 18px; }
    .banner-text p { font-size: 18px; }
    .op-desc { font-size: 18px; }
    .chat-bubble p { font-size: 18px; }
    .showcase-subtitle { font-size: 15px; }
    .showcase-question { font-size: 16px; }
    .mixed-left-text p,
    .mixed-right-text p { font-size: 18px; }
    .iti-left p { font-size: 18px; }
    .split-left-text p,
    .split-right p { font-size: 18px; }

    /* Board page hero */
    .board-hero-title {
        font-size: 20px;
    }

    /* Board page scroll accordion */
    .board-scroll .scroll-header {
        padding: 10px 12px;
        border-width: 3px;
    }
    .board-scroll .scroll-title {
        font-size: 16px;
        letter-spacing: 0.08em;
    }
    .board-scroll .scroll-index {
        font-size: 14px;
    }
    .board-scroll .scroll-panel {
        border-left-width: 3px;
        border-right-width: 3px;
    }
    .board-scroll .scroll-entry.active .scroll-panel {
        border-bottom-width: 3px;
        max-height: none;
        height: auto;
    }
    .board-scroll .scroll-panel img {
        object-fit: contain;
    }

    .page-title {
        font-size: 24px;
    }

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

    .project-title {
        font-size: 24px;
    }

    .showcase-title {
        font-size: 28px;
    }

    .carousel-title {
        font-size: 22px;
    }

    .carousel-indicators {
        gap: 6px;
    }

    .carousel-indicator {
        font-size: 16px;
    }

    .carousel-control {
        width: 40px;
        height: 40px;
        left: 12px;
        right: 12px;
    }

    .carousel-control.prev {
        left: 12px;
    }

    .carousel-control.next {
        right: 12px;
    }

    .narrative-accordion {
        margin: 30px 0 40px;
    }

    .accordion-toggle {
        font-size: 14px;
        letter-spacing: 0.08em;
        padding: 12px 14px;
    }

    .accordion-panel {
        padding: 0;
    }

    .dominant-title {
        font-size: 32px;
    }

    .dominant-large {
        font-size: 40px;
    }
}

/* 视频区域样式 */
.video-section {
    width: 100%;
    height: 100vh;
    position: relative;
    overflow: hidden;
    background-color: #000;
}

.video-container {
    width: 100%;
    height: 100%;
    position: relative;
}

.fullscreen-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* 移动端优化 */
@media screen and (max-width: 768px) {
    .video-section {
        height: 100vh;
        min-height: -webkit-fill-available;
    }
    
    .fullscreen-video {
        object-fit: cover;
        object-position: center;
    }
}

/* iOS Safari 优化 */
@supports (-webkit-touch-callout: none) {
    .video-section {
        height: -webkit-fill-available;
    }
}