:root {
    --primary-color: #00b0ff;
    --secondary-color: #2979ff;
    --accent-color: #00e5ff;
    --bg-color: #0a0a1e;
    --card-bg: rgba(20, 20, 40, 0.8);
    --deep-blue: #1a237e;
    --deep-blue-light: rgba(26, 35, 126, 0.15);
    --ocean-blue: #0d47a1;
    --ocean-blue-light: rgba(13, 71, 161, 0.1);
    --text-primary: #ffffff;
    --text-secondary: #b0bec5;
    --border-color: rgba(0, 176, 255, 0.3);
    --nav-height: 64px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    background-image:
        radial-gradient(circle at 50% 50%, rgba(0, 176, 255, 0.08) 0%, transparent 60%),
        radial-gradient(circle at 10% 20%, var(--deep-blue-light) 0%, transparent 30%),
        radial-gradient(circle at 90% 80%, var(--ocean-blue-light) 0%, transparent 30%);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

/* ========== 加载动画 ========== */
.page-loader {
    position: fixed;
    inset: 0;
    background: var(--bg-color);
    z-index: 10000;
    display: none;
    align-items: center;
    justify-content: center;
    transition: opacity 0.6s ease, visibility 0.6s ease;
}

.page-loader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

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

.loader-logo {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 20px;
    animation: loaderPulse 1.5s ease-in-out infinite;
}

.loader-bar {
    width: 200px;
    height: 3px;
    background: rgba(0, 176, 255, 0.2);
    border-radius: 3px;
    overflow: hidden;
    margin: 0 auto;
}

.loader-progress {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    animation: loaderProgress 1.2s ease-out forwards;
    border-radius: 3px;
}

@keyframes loaderPulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

@keyframes loaderProgress {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* ========== 导航栏 ========== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(10, 10, 30, 0.75);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border-bottom: 1px solid rgba(0, 176, 255, 0.15);
    z-index: 1000;
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.4s ease;
}

.navbar.hidden {
    transform: translateY(-100%);
}

.navbar.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.4);
    background: rgba(10, 10, 30, 0.9);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.nav-logo img {
    height: 36px;
    width: auto;
    display: block;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 8px;
    align-items: center;
}

.nav-link {
    display: block;
    padding: 8px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 20px;
    height: 2px;
    background: var(--primary-color);
    border-radius: 2px;
    transition: transform 0.3s ease;
}

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

.nav-link:hover::after {
    transform: translateX(-50%) scaleX(1);
}

.nav-cta {
    background: linear-gradient(135deg, var(--deep-blue), var(--ocean-blue));
    border: 1px solid var(--border-color);
    color: var(--text-primary) !important;
    font-weight: 500;
}

.nav-cta:hover {
    box-shadow: 0 0 20px rgba(0, 176, 255, 0.3);
    border-color: var(--primary-color);
}

.nav-cta::after {
    display: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* ========== Hero ========== */
.hero {
    text-align: center;
    padding: 140px 0 80px;
    position: relative;
    overflow: hidden;
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    margin: 0 0 20px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    text-shadow: 0 0 30px rgba(0, 176, 255, 0.3);
    letter-spacing: -1px;
    font-weight: 800;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    min-height: 1.6em;
}

.cursor {
    display: inline-block;
    color: var(--primary-color);
    animation: blink 1s step-end infinite;
    margin-left: 2px;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.data-grid {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin: 50px 0;
    flex-wrap: wrap;
}

.grid-item {
    text-align: center;
    min-width: 160px;
}

.data-number {
    color: var(--primary-color);
    text-shadow: 0 0 15px rgba(0, 176, 255, 0.6);
    font-size: 3rem;
    font-weight: 800;
    display: block;
    line-height: 1;
    margin-bottom: 8px;
    font-variant-numeric: tabular-nums;
}

.data-label {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ========== Section Common ========== */
section {
    margin: 100px 0;
}

.section-title {
    color: var(--primary-color);
    border-bottom: 1px solid var(--border-color);
    text-shadow: 0 0 10px rgba(0, 176, 255, 0.3);
    font-size: 2.2rem;
    margin-bottom: 40px;
    padding-bottom: 12px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

/* ========== About ========== */
.about-content p {
    color: var(--text-secondary);
    font-size: 1.15rem;
    line-height: 1.9;
    margin-bottom: 20px;
}

.quick-links {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: center;
    margin-top: 40px;
}

.quick-link {
    padding: 12px 24px;
    background: var(--deep-blue-light);
    border: 1px solid var(--border-color);
    border-radius: 30px;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.quick-link:hover {
    background: linear-gradient(90deg, var(--deep-blue), var(--ocean-blue));
    border-color: var(--primary-color);
    box-shadow: 0 0 25px rgba(0, 176, 255, 0.4);
    transform: translateY(-3px);
    color: var(--text-primary);
}

/* ========== Timeline（恢复横向滚动，仅删除滚轮劫持） ========== */
.timeline {
    position: relative;
    max-width: 100%;
    margin: 0 auto;
    overflow-x: auto;
    overflow-y: hidden;
    padding: 80px 20px;
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--bg-color);
    cursor: grab;
    -webkit-overflow-scrolling: touch;
}

.timeline:active {
    cursor: grabbing;
}

.timeline::-webkit-scrollbar {
    height: 4px;
}

.timeline::-webkit-scrollbar-track {
    background: var(--bg-color);
    border-radius: 2px;
}

.timeline::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 2px;
}

.timeline-container {
    position: relative;
    max-width: 100%;
    overflow: hidden;
}

.timeline-container::before,
.timeline-container::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 150px;
    z-index: 2;
    pointer-events: none;
}

.timeline-container::before {
    left: 0;
    background: linear-gradient(to right, var(--bg-color), transparent);
}

.timeline-container::after {
    right: 0;
    background: linear-gradient(to left, var(--bg-color), transparent);
}

.timeline-content-wrapper {
    display: flex;
    min-width: max-content;
    position: relative;
    gap: 40px;
    align-items: center;
}

.timeline-content-wrapper::after {
    content: '';
    position: absolute;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    left: 0;
    right: 0;
    top: 50%;
    margin-top: -1px;
    z-index: 1;
    opacity: 0.6;
}

.timeline-item {
    position: relative;
    width: 250px;
    box-sizing: border-box;
    margin: 0;
    display: flex;
    justify-content: center;
    z-index: 2;
    height: auto;
}

.timeline-content {
    padding: 20px;
    background-color: var(--card-bg);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    width: 100%;
    box-sizing: border-box;
    text-align: center;
    transform: translateY(-40px);
    backdrop-filter: blur(5px);
    position: relative;
    overflow: hidden;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.timeline-content:hover {
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 176, 255, 0.3);
    transform: translateY(-45px);
    background-color: rgba(20, 20, 40, 0.95);
}

.timeline-content:hover::before {
    opacity: 1;
}

.timeline-date {
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 8px;
    font-size: 0.95rem;
    display: block;
}

.timeline-content h3 {
    margin: 0 0 8px;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.timeline-content p {
    margin: 0;
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

.timeline-item a {
    color: inherit;
    text-decoration: underline;
    text-underline-offset: 2px;
}

/* ========== Products ========== */
.products-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.product-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 0 20px rgba(0, 176, 255, 0.08);
    height: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.product-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(0, 176, 255, 0.12), transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    z-index: 0;
}

.product-card:hover::after {
    opacity: 1;
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 0 40px rgba(0, 176, 255, 0.2);
    border-color: rgba(0, 176, 255, 0.6);
}

.product-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
    line-height: 1;
    z-index: 1;
    position: relative;
}

.product-title {
    color: var(--primary-color);
    font-size: 1.35rem;
    margin-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 12px;
    font-weight: 700;
    z-index: 1;
    position: relative;
}

.product-description {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
    flex-grow: 1;
    z-index: 1;
    position: relative;
}

.product-status {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: rgba(25, 25, 45, 0.92);
    backdrop-filter: blur(2px);
    z-index: 1;
    position: relative;
    letter-spacing: 0.5px;
}

.status-development {
    border: 1px solid #ff9800;
    color: #ff9800;
    box-shadow: 0 0 8px rgba(255, 152, 0, 0.2);
}

.status-completed {
    border: 1px solid #00c853;
    color: #00c853;
    box-shadow: 0 0 8px rgba(0, 200, 83, 0.2);
}

.product-link {
    display: inline-block;
    padding: 10px 24px;
    background: var(--deep-blue-light);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    margin-top: auto;
    font-weight: 500;
    z-index: 1;
    position: relative;
    align-self: flex-start;
}

.product-link:hover {
    background: linear-gradient(90deg, var(--deep-blue), var(--ocean-blue));
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(0, 176, 255, 0.4);
    color: var(--text-primary);
}

/* ========== Team ========== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.member-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 30px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(5px);
    height: 100%;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.member-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--deep-blue-light), var(--ocean-blue-light));
    z-index: -1;
}

.member-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(0, 176, 255, 0.1), transparent 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.member-card:hover::after {
    opacity: 1;
}

.member-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 0 40px rgba(0, 176, 255, 0.2);
    border-color: var(--primary-color);
}

.member-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 20px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.1);
    display: block;
}

.member-avatar-group {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 2px;
    overflow: hidden;
    margin-bottom: 20px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
    border: 2px solid rgba(255, 255, 255, 0.1);
    background: var(--card-bg);
    padding: 2px;
}

.member-avatar-group img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 2px;
}

.member-name {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-weight: 700;
}

.member-role {
    color: var(--accent-color);
    margin-bottom: 20px;
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.5px;
}

.member-bio {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
    flex-grow: 1;
}

.member-bio a {
    color: var(--primary-color);
    text-decoration: none;
}

.member-bio a:hover {
    text-decoration: underline;
}

.member-sign {
    display: block;
    margin-top: auto;
    font-style: italic;
    color: rgba(255, 255, 255, 0.6);
    border-left: 3px solid var(--primary-color);
    padding-left: 16px;
    font-size: 0.9rem;
    text-align: left;
    width: 100%;
}

/* ========== Footer ========== */
footer {
    background: rgba(10, 10, 30, 0.9);
    padding: 60px 0 30px;
    margin-top: 100px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
}

.footer-section {
    flex: 1;
    min-width: 250px;
}

.footer-title {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    font-weight: 700;
}

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

.footer-links li {
    margin-bottom: 12px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-links a:hover {
    color: var(--primary-color);
    transform: translateX(5px);
}

.copyright {
    text-align: center;
    padding-top: 30px;
    margin-top: 30px;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.copyright a {
    color: var(--primary-color);
    text-decoration: none;
}

/* ========== Back to Top ========== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--primary-color);
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 999;
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: linear-gradient(135deg, var(--deep-blue), var(--ocean-blue));
    border-color: var(--primary-color);
    box-shadow: 0 0 25px rgba(0, 176, 255, 0.4);
    transform: translateY(-3px);
}

/* ========== Reveal Animations ========== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: opacity, transform;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ========== Error Modal ========== */
.error-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    backdrop-filter: blur(5px);
}

.error-modal-content {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 30px;
    width: 90%;
    max-width: 450px;
    text-align: center;
    box-shadow: 0 0 30px rgba(0, 176, 255, 0.3);
}

.error-modal-title {
    font-size: 1.8rem;
    color: #ff5252;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.error-modal-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 25px;
    line-height: 1.6;
}

.error-modal-close {
    padding: 10px 25px;
    background: linear-gradient(90deg, var(--deep-blue), var(--ocean-blue));
    border: 1px solid var(--primary-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.error-modal-close:hover {
    box-shadow: 0 0 20px rgba(0, 176, 255, 0.4);
    transform: translateY(-2px);
}

/* ========== Mouse Glow ========== */
.mouse-glow {
    position: fixed;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 176, 255, 0.08), transparent 70%);
    pointer-events: none;
    z-index: 0;
    transform: translate(-50%, -50%);
    transition: opacity 0.3s ease;
}

/* ========== Animations ========== */
@keyframes pulse {
    from { transform: scale(1); opacity: 1; }
    to { transform: scale(1.15); opacity: 0.7; }
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .timeline-item {
        min-width: 250px;
    }
}

@media (max-width: 768px) {
    :root {
        --nav-height: 56px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: rgba(10, 10, 30, 0.98);
        flex-direction: column;
        padding: 20px;
        gap: 5px;
        border-bottom: 1px solid var(--border-color);
        transform: translateY(-150%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .nav-menu.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        width: 100%;
        text-align: center;
        padding: 12px;
    }

    .hero {
        padding: 120px 0 60px;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .data-grid {
        flex-direction: column;
        align-items: stretch;
        gap: 25px;
    }

    .grid-item {
        width: 100%;
        min-width: auto;
    }

    .data-number {
        font-size: 2.2rem;
    }

    .timeline {
        padding: 40px 10px 80px;
    }

    .timeline-item {
        min-width: 200px;
        height: auto;
        min-height: 150px;
    }

    .timeline-content {
        padding: 15px;
    }

    .timeline-container::before,
    .timeline-container::after {
        width: 50px;
    }

    .team-grid, .products-container {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .footer-content {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .footer-section {
        width: 100%;
    }

    .back-to-top {
        width: 44px;
        height: 44px;
        bottom: 20px;
        right: 20px;
    }

    .error-modal-content {
        padding: 20px;
        max-width: 350px;
    }

    .error-modal-title {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .product-card, .member-card {
        padding: 20px;
    }

    .product-title {
        font-size: 1.2rem;
    }

    .timeline-item {
        min-width: 180px;
        height: auto;
        min-height: 130px;
    }

    .timeline-content {
        padding: 12px;
    }

    .timeline-content h3 {
        font-size: 1rem;
    }

    .timeline-content p {
        font-size: 0.85rem;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .nav-logo img {
        height: 32px;
    }
}