:root {
    --primary-color: #00ff9f;
    --secondary-color: #00b8ff;
    --background-color: #0a0a0a;
    --text-color: #ffffff;
    --accent-color: #ff00ff;
    --card-bg: rgba(255, 255, 255, 0.05);
    --nav-bg: rgba(0, 0, 0, 0.8);
}

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

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background: var(--background-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

.about-content {
    max-width: 1000px;
    margin: 0 auto;
    text-align: left;
    padding: 3rem;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.03), rgba(0, 255, 159, 0.03));
    border-radius: 20px;
    box-shadow: 0 0 30px rgba(0, 255, 159, 0.1);
    position: relative;
    overflow: hidden;
}

.about-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
}

.about-content > p {
    text-align: center;
    font-size: 1.4rem;
    margin-bottom: 4rem;
    color: var(--secondary-color);
    font-weight: 500;
    letter-spacing: 0.5px;
    line-height: 1.6;
    text-shadow: 0 0 20px rgba(0, 184, 255, 0.3);
}

.vision-section, .mission-section {
    margin-bottom: 3rem;
    padding: 2.5rem;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 15px;
    border: 1px solid rgba(0, 255, 159, 0.1);
    transition: all 0.3s ease;
    position: relative;
    backdrop-filter: blur(10px);
}

.vision-section::after, .mission-section::after {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: 15px;
    z-index: -1;
    opacity: 0.1;
    transition: opacity 0.3s ease;
}

.vision-section:hover, .mission-section:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 30px rgba(0, 255, 159, 0.2);
    border-color: rgba(0, 255, 159, 0.3);
}

.vision-section:hover::after, .mission-section:hover::after {
    opacity: 0.2;
}

.vision-section h3, .mission-section h3 {
    color: var(--primary-color);
    font-size: 2rem;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-weight: 600;
    text-shadow: 0 0 20px rgba(0, 255, 159, 0.3);
}

.vision-section p, .mission-section p {
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--text-color);
    opacity: 0.95;
    letter-spacing: 0.3px;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.1);
}

/* Join Section */
.join {
    background: var(--bg-color);
    padding: 4rem 0;
}

.join-content {
    text-align: center;
}

.join-links {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
}

.join-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.3rem;
    transition: all 0.3s ease;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    background: rgba(var(--primary-color-rgb), 0.1);
}

.join-link:hover {
    color: var(--primary-color);
    background: rgba(var(--primary-color-rgb), 0.15);
    transform: translateY(-2px);
}

.join-link.twitter:hover {
    color: #1DA1F2;
    background: rgba(29, 161, 242, 0.15);
    box-shadow: 0 5px 15px rgba(29, 161, 242, 0.1);
}

.join-link i {
    font-size: 1.8rem;
}

.mobile-center {
    display: flex;
    justify-content: center;
    align-items: center;
}

@media (max-width: 768px) {
    .join-links {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
        width: 100%;
    }

    .join-link {
        width: 80%;
        justify-content: center;
        text-align: center;
    }
    
    .mobile-center {
        width: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
    }
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--primary-color);
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0;
    height: 80px;
}

.nav-logo {
    text-decoration: none;
    height: 100%;
    display: block;
}

.nav-logo:hover {
    opacity: 1;
}

.nav-logo .logo {
    height: 100%;
    display: flex;
    align-items: center;
}

.logo {
    height: 100%;
    display: flex;
    align-items: center;
}

.logo img {
    height: 180%;
    width: auto;
    filter: drop-shadow(0 0 10px var(--primary-color));
    transform: scale(1.1);
    transform-origin: left center;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-content {
        padding: 0 1rem;
    }

    .nav {
        padding: 0.5rem 0;
    }

    .logo img {
        height: 150%;
    }

    .nav-links {
        display: none;
        position: fixed;
        top: 80px;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(0, 0, 0, 0.95);
        backdrop-filter: blur(10px);
        padding: 1.5rem;
        gap: 1.5rem;
        text-align: center;
        border-bottom: 1px solid var(--primary-color);
        z-index: 1000;
    }

    .nav-links a {
        font-size: 1.2rem;
        padding: 0.5rem 0;
        display: block;
        width: 100%;
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: block;
        background: none;
        border: none;
        color: var(--text-color);
        font-size: 1.5rem;
        cursor: pointer;
        padding: 0.5rem;
        z-index: 1001;
        width: 44px;
        height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

@media (min-width: 769px) {
    .mobile-menu-btn {
        display: none;
    }
}

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

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

/* Hero Section */
.hero {
    min-height: 75vh;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    text-align: center;
    padding-top: 0.5rem;
    background: var(--background-color);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 255, 159, 0.1) 2px,
        rgba(0, 255, 159, 0.1) 4px
    );
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-logo {
    margin-bottom: -20px;
    display: inline-block;
    line-height: 0;
}

.hero-logo img {
    height: 280px;
    width: auto;
    filter: drop-shadow(0 0 20px var(--primary-color));
    animation: float 3s ease-in-out infinite;
    margin: 0;
    transform: translateY(50px);
}

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

.glitch {
    font-size: 4rem;
    font-weight: bold;
    text-transform: uppercase;
    color: var(--primary-color);
    text-shadow: 2px 2px var(--accent-color);
    margin-bottom: 0.5rem;
    animation: glitch 1s infinite;
}

.hero p {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    border: 2px solid;
    border-radius: 4px;
    text-decoration: none;
    font-weight: bold;
    text-transform: uppercase;
    transition: all 0.3s ease;
}

.btn i {
    margin-right: 0.5rem;
    font-size: 1.1em;
    vertical-align: middle;
}

.btn:hover i {
    transform: scale(1.1);
    transition: transform 0.3s ease;
}

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

.btn-secondary {
    background-color: transparent;
    border-color: var(--secondary-color);
    color: var(--secondary-color);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 255, 159, 0.3);
}

.btn.disabled {
    opacity: 0.7;
    cursor: not-allowed;
    background: #666;
    border-color: #666;
}

.btn.disabled:hover {
    transform: none;
    box-shadow: none;
}

.btn.disabled i {
    margin-right: 0.5rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0.5;
    }
}

/* Sections */
section {
    padding: 5rem 0;
}

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

/* Team Section */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    padding: 1rem;
}

.team-section {
    margin-bottom: 2rem;
}

.team-section h2 {
    color: var(--secondary-color);
    font-size: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

.team-member {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.2rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 255, 159, 0.1);
}

.member-image {
    width: 140px;
    height: 140px;
    margin: 0 auto 1rem;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--primary-color);
}

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

.team-member h3 {
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
    color: var(--text-color);
}

.team-member p {
    font-size: 0.9rem;
    color: var(--secondary-color);
    opacity: 0.9;
}

.team-member::before,
.team-member::after,
.member-image::before,
.member-image::after {
    display: none;
}

/* Team Stats */
.team-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    margin: 2rem 0 4rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(0, 255, 159, 0.1);
    min-width: 200px;
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 30px rgba(0, 255, 159, 0.2);
    border-color: rgba(0, 255, 159, 0.3);
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    text-shadow: 0 0 20px rgba(0, 255, 159, 0.3);
}

.stat-label {
    font-size: 1.1rem;
    color: var(--text-color);
    opacity: 0.9;
}

.team-category {
    font-size: 2rem;
    color: var(--secondary-color);
    margin-bottom: 2rem;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 2px;
    text-shadow: 0 0 20px rgba(0, 184, 255, 0.3);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .team-stats {
        flex-direction: column;
        gap: 2rem;
        align-items: center;
    }

    .stat-item {
        width: 100%;
        max-width: 300px;
    }
}

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

.achievement-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 1px solid var(--primary-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.achievement-card.glow {
    box-shadow: 0 0 20px rgba(0, 255, 159, 0.1);
}

.achievement-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 25px rgba(0, 255, 159, 0.2);
}

.achievement-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(0, 255, 159, 0.2);
}

.achievement-card i {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-shadow: 0 0 10px rgba(0, 255, 159, 0.5);
}

.achievement-card h3 {
    color: var(--secondary-color);
    margin: 0;
    font-size: 1.8rem;
}

.achievement-card ul {
    list-style: none;
    padding: 0;
    text-align: left;
}

.achievement-card li {
    margin: 1rem 0;
    padding: 0.5rem 1rem;
    position: relative;
    border-radius: 6px;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.achievement-card li:hover {
    background: rgba(0, 255, 159, 0.05);
}

.achievement-card li.highlight {
    background: rgba(0, 255, 159, 0.1);
    border-left: 3px solid var(--primary-color);
}

.place {
    color: var(--primary-color);
    font-weight: bold;
    margin-left: auto;
}

.member {
    color: var(--secondary-color);
    font-size: 0.9rem;
    opacity: 0.8;
}

.link-highlight {
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 1px solid var(--primary-color);
    transition: all 0.3s ease;
}

.link-highlight:hover {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

/* Partners Section */
.partners {
    padding: 4rem 0;
    background: var(--background-color);
}

.partner-grid {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 2rem;
}

.partners-image {
    max-width: 100%;
    height: auto;
    border-radius: 15px;
    box-shadow: 0 0 30px rgba(0, 255, 159, 0.1);
}

.partner-row,
.partner-card {
    display: none;
}

/* Events Section */
.initiative-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.initiative-card {
    background: rgba(255, 255, 255, 0.03);
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(0, 255, 159, 0.1);
}

.initiative-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 30px rgba(0, 255, 159, 0.2);
    border-color: rgba(0, 255, 159, 0.3);
}

.initiative-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 1.5rem;
    background: rgba(0, 255, 159, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.initiative-icon i {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.initiative-card h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.initiative-card p {
    color: var(--text-color);
    margin-bottom: 1.5rem;
    font-size: 1rem;
    opacity: 0.9;
    line-height: 1.6;
}

.repo-stats {
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
    font-size: 1.1rem;
}

.repo-stats i {
    color: #FFD700;
    margin-right: 0.3rem;
}

.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.button-group .btn {
    flex: 1;
}

@media (max-width: 768px) {
    .button-group {
        flex-direction: column;
    }
}

/* Footer */
.footer {
    background-color: var(--dark-bg);
    padding: 2rem 0;
    margin-top: 4rem;
}

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

.footer-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
}

.defihacklabs-title {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin: 0;
    text-shadow: 0 0 10px rgba(var(--primary-color-rgb), 0.3);
}

.social-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.social-links a {
    color: #fff;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    opacity: 0.8;
}

.social-links a:hover {
    opacity: 1;
    transform: translateY(-2px);
}

.social-links a i {
    transition: transform 0.3s ease;
}

.social-links a:hover i {
    transform: scale(1.1);
}

.footer p {
    color: #888;
    font-size: 0.9rem;
    margin: 0;
}

@media (max-width: 768px) {
    .footer-header {
        flex-direction: column;
        gap: 1rem;
    }

    .social-links {
        gap: 2rem;
    }

    .social-links a {
        font-size: 1.8rem;
    }
}

/* Join Section */
.join {
    background: var(--bg-color);
    padding: 4rem 0;
}

.join-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.join-links {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
    padding: 0 1rem;
}

.join-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.2rem;
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    padding: 1.5rem 2rem;
    border-radius: 12px;
    background: rgba(var(--primary-color-rgb), 0.1);
    width: 180px;
}

.join-link:hover {
    color: var(--primary-color);
    background: rgba(var(--primary-color-rgb), 0.15);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(var(--primary-color-rgb), 0.1);
}

.join-link.twitter:hover {
    color: #1DA1F2;
    background: rgba(29, 161, 242, 0.15);
    box-shadow: 0 5px 15px rgba(29, 161, 242, 0.1);
}

.join-link i {
    font-size: 2.2rem;
    width: 40px;
    text-align: center;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: #2a2a2a;
    color: #fff;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 1rem;
}

/* 響應式調整 */
@media (max-width: 768px) {
    /* 導航欄調整 */
    .nav {
        padding: 0.5rem 0;
    }

    .nav-content {
        padding: 0 1rem;
    }

    /* 團隊成員卡片調整 */
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        padding: 0 1rem;
    }

    .team-member {
        margin-bottom: 1rem;
    }

    .team-member .member-image {
        width: 120px;
        height: 120px;
    }

    .team-member h3 {
        font-size: 0.9rem;
        margin: 0.5rem 0 0.2rem;
    }

    .team-member p {
        font-size: 0.8rem;
    }

    /* 倡議卡片調整 */
    .initiative-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
        padding: 0 1rem;
    }

    .initiative-card {
        padding: 1.5rem;
    }

    .initiative-card h3 {
        font-size: 1.2rem;
        margin-bottom: 0.8rem;
    }

    .initiative-card p {
        font-size: 0.9rem;
        margin-bottom: 1.2rem;
    }

    .initiative-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 1rem;
    }

    .initiative-icon i {
        font-size: 1.5rem;
    }

    /* 按鈕組調整 */
    .button-group {
        flex-direction: column;
    }

    .button-group .btn {
        width: 100%;
    }

    /* 統計數字調整 */
    .stats {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }

    .stat-item {
        width: 100%;
        padding: 1rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .stat-label {
        font-size: 0.9rem;
    }

    /* 頁腳調整 */
    .footer {
        padding: 1.5rem 0;
    }

    .footer-content {
        padding: 0 1rem;
    }

    .footer-header {
        flex-direction: column;
        gap: 0.8rem;
        margin-bottom: 1rem;
    }

    .footer-header h2 {
        font-size: 1.1rem;
    }

    .social-links {
        gap: 1.5rem;
    }

    .social-links a {
        font-size: 1.1rem;
    }

    .footer p {
        font-size: 0.8rem;
    }

    /* 章節標題調整 */
    .section-title {
        font-size: 1.8rem;
        margin-bottom: 1.5rem;
        padding: 0 1rem;
    }

    /* 通用間距調整 */
    section {
        padding: 3rem 0;
    }

    .container {
        padding: 0 1rem;
    }
}

/* 更小屏幕的特殊調整 */
@media (max-width: 480px) {
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.8rem;
    }

    .team-member .member-image {
        width: 100px;
        height: 100px;
    }

    .stat-number {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.6rem;
    }
}

/* Animations */
@keyframes glitch {
    0% {
        text-shadow: 2px 2px var(--accent-color);
    }
    25% {
        text-shadow: -2px 2px var(--secondary-color);
    }
    50% {
        text-shadow: 2px -2px var(--primary-color);
    }
    75% {
        text-shadow: -2px -2px var(--accent-color);
    }
    100% {
        text-shadow: 2px 2px var(--accent-color);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-content {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        flex-direction: column;
        align-items: center;
    }

    .hero h1 {
        font-size: 3rem;
    }

    .hero p {
        font-size: 1.2rem;
    }

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

    .section-title {
        font-size: 2rem;
    }
}

/* Join Section */
.join {
    background: var(--bg-color);
    padding: 4rem 0;
}

.join-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.join-links {
    display: flex;
    justify-content: center;
    gap: 3rem;
    margin-top: 2rem;
    padding: 0 1rem;
}

.join-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.2rem;
    color: var(--text-color);
    text-decoration: none;
    font-size: 1.5rem;
    transition: all 0.3s ease;
    padding: 1.5rem 2rem;
    border-radius: 12px;
    background: rgba(var(--primary-color-rgb), 0.1);
    width: 180px;
}

.join-link:hover {
    color: var(--primary-color);
    background: rgba(var(--primary-color-rgb), 0.15);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(var(--primary-color-rgb), 0.1);
}

.join-link.twitter:hover {
    color: #1DA1F2;
    background: rgba(29, 161, 242, 0.15);
    box-shadow: 0 5px 15px rgba(29, 161, 242, 0.1);
}

.join-link i {
    font-size: 2.2rem;
    width: 40px;
    text-align: center;
}

@media (max-width: 768px) {
    .join-links {
        flex-direction: column;
        gap: 1rem;
        align-items: center;
        width: 100%;
    }

    .join-link {
        width: 80%;
        justify-content: center;
        text-align: center;
    }
    
    .section-title {
        text-align: center;
    }
}