/* ===== Reset & Base ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

:root {
    --color-bg: #ffffff;
    --color-text: #1a1a1a;
    --color-text-light: #666666;
    --color-accent: #8b6914;
    --color-overlay: rgba(0, 0, 0, 0.6);
    --font-serif: 'Noto Serif SC', serif;
    --font-sans: 'Noto Sans SC', sans-serif;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
    word-wrap: break-word;
    overflow-wrap: break-word;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    text-decoration: none;
    color: inherit;
}

/* ===== Navigation ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.2rem 0;
    transition: var(--transition);
    background: transparent;
}

.navbar:hover {
    background: rgba(240, 240, 240, 1);
}

.navbar:hover .nav-link {
    color: #000000;
}

.navbar:hover .nav-en {
    color: rgba(0, 0, 0, 0.5);
}

.navbar:hover .hamburger {
    background: #000000;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 0.8rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar.scrolled:hover {
    background: rgba(255, 255, 255, 0.95);
}

.navbar.scrolled .nav-logo,
.navbar.scrolled .nav-link {
    color: var(--color-text);
}

.navbar.scrolled .nav-en {
    color: var(--color-text-light);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-img {
    height: 90px;
    width: auto;
    max-width: 300px;
    object-fit: contain;
    transition: var(--transition);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 1.5rem;
    align-items: center;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 400;
    color: #000000;
    letter-spacing: 0.5px;
    transition: var(--transition);
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    line-height: 1.2;
}

.nav-cn {
    font-size: 0.95rem;
    font-weight: 400;
}

.nav-en {
    font-size: 0.65rem;
    font-weight: 300;
    letter-spacing: 1px;
    opacity: 0.8;
    text-transform: uppercase;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent);
    transition: var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger {
    width: 25px;
    height: 2px;
    background: #ffffff;
    transition: var(--transition);
}

.navbar.scrolled .hamburger {
    background: var(--color-text);
}

/* ===== Hero Section ===== */
.hero {
    height: 100vh;
    position: relative;
    overflow: hidden;
}

.hero-slider {
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-slide.active {
    opacity: 1;
}

/* ===== Slide Navigation Dots ===== */
.hero-dots {
    position: absolute;
    bottom: 2.5rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 1rem;
    z-index: 10;
}

.hero-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid rgba(255, 255, 255, 0.6);
}

.hero-dot:hover {
    background: rgba(255, 255, 255, 0.7);
}

.hero-dot.active {
    background: #ffffff;
    border-color: #000000;
    transform: scale(1.15);
}

/* ===== Container ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* ===== Section Headers ===== */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.text-left {
    text-align: left;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    letter-spacing: 3px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    font-weight: 300;
}

/* ===== Projects Section ===== */
.projects {
    padding: 8rem 0;
    background: #fafafa;
}

.project-filters {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 4rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 2rem;
    background: transparent;
    border: 1px solid #e0e0e0;
    color: var(--color-text-light);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 1px;
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--color-text);
    border-color: var(--color-text);
    color: #000000;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.project-card {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 3/4;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0);
}

.project-card.hidden {
    display: none;
}

.project-image {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 3rem 2rem;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: #000000;
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    transform: translateY(0);
    opacity: 1;
}

.project-tags {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.tag {
    padding: 0.25rem 0.75rem;
    background: rgba(255, 255, 255, 0.2);
    font-size: 0.75rem;
    letter-spacing: 1px;
}

.project-info h3 {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    letter-spacing: 2px;
}

.project-info p {
    font-size: 0.9rem;
    font-weight: 300;
    opacity: 0.9;
}

/* ===== Company Section ===== */
.company {
    padding: 8rem 0;
}

.company-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.company-description {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
}

.company-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 3rem;
    padding-top: 3rem;
    border-top: 1px solid #e0e0e0;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 0.5rem;
}

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

.company-image {
    overflow: hidden;
}

.company-image img {
    width: 100%;
    height: 600px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.company-image:hover img {
    transform: scale(1.03);
}

/* ===== Company Introduction Section ===== */
.company-intro {
    padding: 8rem 0;
    background: #ffffff;
}

.company-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.company-text {
    padding-right: 2rem;
}

.company-title {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: 3px;
    color: var(--color-text);
}

.company-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    font-weight: 300;
    margin-bottom: 2rem;
}

.company-text .company-description {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
}

.company-image {
    width: 100%;
    height: 500px;
    overflow: hidden;
    border-radius: 8px;
}

.company-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

/* 响应式设计 */
@media (max-width: 1024px) {
    .company-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    
    .company-text {
        padding-right: 0;
    }
    
    .company-image {
        height: 400px;
    }
}

@media (max-width: 768px) {
    .company-intro {
        padding: 4rem 0;
    }
    
    .company-title {
        font-size: 2rem;
    }
    
    .company-image {
        height: 300px;
    }
}

/* ===== Contact Section ===== */
.contact {
    padding: 3rem 0;
    background: #1a1a1a;
    color: #000000;
}

.contact-header {
    display: flex;
    align-items: baseline;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-header .section-title {
    color: #000000;
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: 2px;
    margin-bottom: 0;
}

.contact-header .section-subtitle {
    color: rgba(0, 0, 0, 0.5);
    font-size: 0.85rem;
}

.contact-info {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    gap: 0.5rem 2rem;
    max-width: 650px;
}

.contact-item {
    display: contents;
}

.contact-item h4 {
    font-family: var(--font-serif);
    font-size: 0.85rem;
    color: rgba(0, 0, 0, 0.5);
    letter-spacing: 1px;
    line-height: 1.8;
}

.contact-item p {
    color: rgba(0, 0, 0, 0.85);
    font-weight: 300;
    font-size: 0.85rem;
    line-height: 1.8;
    white-space: nowrap;
}

@media (max-width: 768px) {
    .contact {
        padding: 2.5rem 0;
    }
    .contact-info {
        grid-template-columns: auto 1fr;
        gap: 0.3rem 1rem;
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .contact {
        padding: 2rem 0;
    }
}

/* ===== Footer ===== */
.footer {
    padding: 2rem 0;
    background: #111111;
    text-align: center;
    color: rgba(0, 0, 0, 0.5);
    font-size: 0.85rem;
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
    .projects-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .company-layout {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .company-image img {
        height: 400px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2.5rem;
        transition: right 0.4s ease;
    }

    .nav-menu.active {
        -webkit-overflow-scrolling: touch;
        right: 0;
    }

    .nav-menu .nav-link {
        color: var(--color-text);
        font-size: 1.1rem;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active .hamburger:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active .hamburger:nth-child(2) {
        opacity: 0;
    }

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

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

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

    .project-filters {
        gap: 0.75rem;
    }

    .filter-btn {
        padding: 0.6rem 1.25rem;
        font-size: 0.85rem;
    }

    .company-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }

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

    .projects,
    .company,
    .contact {
        padding: 4rem 0;
    }
}

@media (max-width: 480px) {
    .hero-dot {
        width: 8px;
        height: 8px;
    }

    .hero-dots {
        bottom: 1.5rem;
        gap: 0.6rem;
    }

    .container {
        padding: 0 1.25rem;
    }
}

/* ===== Scroll Animations ===== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Global Image Fill ===== */
/* 所有图片容器自动填充 */
.img-fill,
.project-image,
.company-image,
.built-card img,
.expertise-card img,
.about-image img,
.contact-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 确保所有图片标签自动填充容器 */
img.img-cover {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 卡片内图片自动填充 */
.card img,
.project-card img,
.built-card img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

/* 英雄区图片填充 */
.hero-slide {
    background-size: cover;
    background-position: center;
}

/* 响应式调整图片高度 */
@media (max-width: 768px) {
    .card img,
    .project-card img,
    .built-card img {
        height: 200px;
    }
}

@media (max-width: 480px) {
    .card img,
    .project-card img,
    .built-card img {
        height: 180px;
    }
}

/* ===== 专业领域模块样式 ===== */
.expertise-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.expertise-tab {
    padding: 1rem 2rem;
    background: transparent;
    border: 1px solid var(--color-text-light);
    color: var(--color-text);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    min-width: 150px;
}

.expertise-tab span {
    display: block;
    font-size: 0.8rem;
    color: var(--color-text-light);
    margin-top: 0.25rem;
}

.expertise-tab:hover,
.expertise-tab.active {
    background: var(--color-text);
    color: #000000;
    border-color: var(--color-text);
}

.expertise-tab:hover span,
.expertise-tab.active span {
    color: #000000;
    opacity: 0.8;
}

.expertise-content {
    display: none;
    animation: fadeIn 0.5s ease;
}

.expertise-content.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.expertise-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.expertise-card {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
}

a.expertise-card {
    display: block;
    text-decoration: none;
    color: inherit;
}

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

.expertise-card:hover img {
    transform: scale(1.1);
}

.expertise-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem 1.5rem;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: #000000;
    transform: translateY(20px);
    opacity: 0;
    transition: var(--transition);
}

.expertise-card:hover .expertise-overlay {
    transform: translateY(0);
    opacity: 1;
}

.expertise-overlay h3 {
    font-family: var(--font-serif);
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    letter-spacing: 1px;
}

.expertise-overlay p {
    font-size: 0.85rem;
    font-weight: 300;
    opacity: 0.9;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .expertise-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .expertise-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .expertise-tabs {
        gap: 0.5rem;
    }
    
    .expertise-tab {
        padding: 0.75rem 1rem;
        min-width: 120px;
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    .expertise-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 专业领域多选筛选样式 ===== */
.multi-filter-bar {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.multi-filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    background: transparent;
    border: 1px solid #ccc;
    color: #333;
    font-size: 1rem;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all 0.3s ease;
    user-select: none;
    position: relative;
}

.multi-filter-chip .chip-cn {
    font-weight: 500;
}

.multi-filter-chip .chip-en {
    font-size: 0.75rem;
    color: #999;
    font-weight: 300;
}

.multi-filter-chip:hover {
    border-color: #333;
    background: rgba(0,0,0,0.03);
}

.multi-filter-chip.selected {
    background: #1a1a1a;
    border-color: #1a1a1a;
    color: #000;
}

.multi-filter-chip.selected .chip-en {
    color: rgba(0, 0, 0, 0.6);
}

.multi-filter-chip .check-mark {
    display: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #fff;
    color: #1a1a1a;
    font-size: 12px;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.multi-filter-chip.selected .check-mark {
    display: flex;
}

/* 结果计数栏 */
.filter-result-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

.filter-result-info {
    font-size: 0.9rem;
    color: #888;
    font-weight: 300;
}

.filter-result-info strong {
    color: #333;
    font-weight: 600;
}

.filter-reset-btn {
    padding: 0.5rem 1.25rem;
    background: transparent;
    border: 1px solid #ddd;
    color: #666;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-reset-btn:hover {
    border-color: #333;
    color: #333;
}

/* 结果网格 */
.result-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    min-height: 400px;
}

.result-card {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
    background: #f5f5f5;
    text-decoration: none;
    color: inherit;
    display: block;
}

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

.result-card:hover img {
    transform: scale(1.08);
}

.result-card .category-tag {
    position: absolute;
    top: 1rem;
    left: 1rem;
    padding: 0.35rem 0.9rem;
    background: rgba(255,255,255,0.9);
    color: #333;
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    z-index: 2;
    backdrop-filter: blur(4px);
}

.result-card .result-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 2rem 1.5rem 1.5rem;
    background: linear-gradient(to top, rgba(0,0,0,0.85), rgba(0,0,0,0.3) 60%, transparent);
    color: #000;
    transform: translateY(15px);
    opacity: 0;
    transition: all 0.4s ease;
}

.result-card:hover .result-overlay {
    transform: translateY(0);
    opacity: 1;
}

.result-card .result-overlay h3 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    margin-bottom: 0.4rem;
    letter-spacing: 1px;
}

.result-card .result-overlay p {
    font-size: 0.85rem;
    font-weight: 300;
    opacity: 0.9;
    line-height: 1.5;
}

/* 空状态 */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: #aaa;
}

.empty-state p {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.empty-state .empty-hint {
    font-size: 0.85rem;
    color: #ccc;
}

/* 入场动画 */
@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-card {
    animation: cardFadeIn 0.5s ease forwards;
}

.result-card:nth-child(1) { animation-delay: 0.05s; }
.result-card:nth-child(2) { animation-delay: 0.1s; }
.result-card:nth-child(3) { animation-delay: 0.15s; }
.result-card:nth-child(4) { animation-delay: 0.2s; }
.result-card:nth-child(5) { animation-delay: 0.25s; }
.result-card:nth-child(6) { animation-delay: 0.3s; }

/* 响应式 */
@media (max-width: 768px) {
    .result-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .multi-filter-chip {
        padding: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }

    .filter-result-bar {
        flex-direction: column;
        gap: 0.75rem;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .result-grid {
        grid-template-columns: 1fr;
    }

    /* 联系我们区块：单列堆叠 */
    .contact-info {
        grid-template-columns: 1fr;
        gap: 0.8rem 0;
    }

    .contact-item h4 {
        font-size: 0.75rem;
        line-height: 1.4;
    }

    .contact-item p {
        font-size: 0.8rem;
        line-height: 1.6;
        white-space: normal;
        word-break: break-all;
    }

    /* 全局小屏字体修正 */
    .section-title {
        font-size: 1.5rem;
    }

    .section-subtitle {
        font-size: 0.85rem;
    }

    /* 导航栏小屏：防止logo过大溢出 */
    .logo-img {
        max-width: 200px;
        height: auto;
        max-height: 56px;
    }

    /* 多选筛选栏小屏优化 */
    .multi-filter-chip {
        padding: 0.5rem 0.9rem;
        font-size: 0.85rem;
    }

    .multi-filter-chip .chip-en {
        font-size: 0.65rem;
    }

    .filter-result-info {
        font-size: 0.8rem;
    }

    .filter-reset-btn {
        font-size: 0.8rem;
        padding: 0.4rem 1rem;
    }
}

/* ===== 超小屏优化（360px以下） ===== */
@media (max-width: 360px) {
    .hero-dot {
        width: 6px;
        height: 6px;
    }
    
    .hero-dots {
        bottom: 1rem;
        gap: 0.5rem;
    }
    
    .nav-cn {
        font-size: 0.85rem;
    }
    
    .nav-en {
        font-size: 0.55rem;
    }
    
    .logo-img {
        max-width: 160px;
        max-height: 42px;
    }
}