:root {
    --color-dark: #474744;
    --color-blue: #2994b2;
    --color-light: #fffbe0;
    --color-gold: #ffb400;
    --color-white: #ffffff;
    --color-gray-light: #f5f5f0;
    --color-text: #333333;
    --color-text-light: #666666;
    --max-width: 1200px;
    --nav-height: 70px;
    --shadow-sm: 0 2px 8px rgba(71, 71, 68, 0.08);
    --shadow-md: 0 4px 20px rgba(71, 71, 68, 0.12);
    --shadow-lg: 0 8px 40px rgba(71, 71, 68, 0.15);
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
    background-color: var(--color-light);
    color: var(--color-text);
    line-height: 1.7;
    letter-spacing: 0.02em;
    min-width: 320px;
    overflow-x: hidden;
}

/* ========== 顶部导航 - 100%宽度 ========== */
.header {
    width: 100%;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 3px solid var(--color-gold);
}

.header-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-height);
    gap: 20px;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    text-decoration: none;
}

.logo-img {
    width: 50px;
    height: 50px;
    border-radius: var(--radius-sm);
    object-fit: cover;
    background-color: var(--color-gold);
    flex-shrink: 0;
}

.logo-text {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1.3;
    letter-spacing: 0.03em;
    white-space: nowrap;
}
.logo-text span {
    color: var(--color-blue);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.nav-links a {
    display: inline-block;
    padding: 8px 15px;
    text-decoration: none;
    color: var(--color-dark);
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: 25px;
    transition: var(--transition);
    white-space: nowrap;
    position: relative;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--color-white);
    background-color: var(--color-blue);
}

.nav-links a.nav-cta {
    background-color: var(--color-gold);
    color: var(--color-dark);
    font-weight: 600;
    padding: 8px 20px;
    animation: pulse-cta 2.5s ease-in-out infinite;
}
@keyframes pulse-cta {
    0%,
    100% {
        box-shadow: 0 0 0 0 rgba(255, 180, 0, 0.5);
    }
    50% {
        box-shadow: 0 0 0 12px rgba(255, 180, 0, 0);
    }
}
.nav-links a.nav-cta:hover {
    background-color: #e6a200;
    color: #fff;
}

/* 汉堡菜单按钮 */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
    background: none;
    border: none;
}
.hamburger span {
    display: block;
    width: 26px;
    height: 3px;
    background-color: var(--color-dark);
    border-radius: 3px;
    transition: var(--transition);
    transform-origin: center;
}
.hamburger.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.hamburger.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* 移动端导航 */
@media (max-width: 992px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background-color: var(--color-white);
        flex-direction: column;
        padding: 90px 30px 40px;
        gap: 8px;
        box-shadow: var(--shadow-lg);
        transition: right 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        z-index: 999;
        overflow-y: auto;
        align-items: stretch;
    }
    .nav-links.active {
        right: 0;
    }
    .nav-links a {
        padding: 12px 18px;
        font-size: 1rem;
        text-align: center;
        border-radius: var(--radius-sm);
    }
    .hamburger {
        display: flex;
    }
    .logo-text {
        font-size: 0.95rem;
    }
    .logo-img {
        width: 40px;
        height: 40px;
    }
    .header-inner {
        height: 60px;
    }
}

/* 移动端遮罩 */
.nav-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(71, 71, 68, 0.5);
    z-index: 998;
}
.nav-overlay.active {
    display: block;
}

/* ========== Hero Banner ========== */
.hero {
    width: 100%;
    background: linear-gradient(170deg, #fffbe0 0%, #fdf5d6 40%, #fef9e7 100%);
    padding: 40px 20px 50px;
    position: relative;
    overflow: hidden;
}
.hero::before {
    content: '';
    position: absolute;
    top: -80px;
    right: -120px;
    width: 450px;
    height: 450px;
    background: radial-gradient(circle, rgba(41, 148, 178, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero::after {
    content: '';
    position: absolute;
    bottom: -60px;
    left: -80px;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(255, 180, 0, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}
.hero-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 40px;
    position: relative;
    z-index: 1;
    flex-wrap: wrap;
}
.hero-content {
    flex: 1 1 380px;
    min-width: 280px;
}
.hero-content h1 {
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    font-weight: 800;
    color: var(--color-dark);
    line-height: 1.35;
    margin-bottom: 16px;
    letter-spacing: 0.04em;
}
.hero-content h1 .highlight {
    color: var(--color-blue);
    position: relative;
    display: inline-block;
}
.hero-content h1 .highlight::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 0;
    width: 100%;
    height: 8px;
    background-color: rgba(255, 180, 0, 0.4);
    border-radius: 4px;
    z-index: -1;
}
.hero-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-light);
    margin-bottom: 10px;
    line-height: 1.6;
}
.hero-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 24px;
}
.hero-tag {
    display: inline-block;
    padding: 6px 16px;
    background-color: var(--color-white);
    border: 1px solid #e8e4d8;
    border-radius: 20px;
    font-size: 0.88rem;
    color: var(--color-dark);
    font-weight: 500;
    white-space: nowrap;
    transition: var(--transition);
}
.hero-tag:hover {
    border-color: var(--color-gold);
    background-color: #fffdf5;
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
}
.hero-btns {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
}
.btn {
    display: inline-block;
    padding: 13px 30px;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    letter-spacing: 0.03em;
    text-align: center;
}
.btn-primary {
    background-color: var(--color-gold);
    color: var(--color-dark);
    box-shadow: 0 4px 16px rgba(255, 180, 0, 0.35);
}
.btn-primary:hover {
    background-color: #e6a200;
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(255, 180, 0, 0.45);
}
.btn-outline {
    background-color: transparent;
    color: var(--color-blue);
    border: 2px solid var(--color-blue);
}
.btn-outline:hover {
    background-color: var(--color-blue);
    color: #fff;
    transform: translateY(-2px);
}
.hero-image {
    flex: 1 1 350px;
    min-width: 280px;
    text-align: center;
}
.hero-image img {
    width: 100%;
    max-width: 520px;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    object-fit: cover;
    aspect-ratio: 4/3;
}

@media (max-width: 768px) {
    .hero {
        padding: 24px 16px 36px;
    }
    .hero-inner {
        gap: 24px;
    }
    .hero-content {
        text-align: center;
    }
    .hero-tags {
        justify-content: center;
    }
    .hero-btns {
        justify-content: center;
    }
    .hero-image img {
        max-width: 100%;
        aspect-ratio: 16/10;
    }
}

/* ========== 通用板块样式 ========== */
.section {
    padding: 60px 20px;
    width: 100%;
}
.section-inner {
    max-width: var(--max-width);
    margin: 0 auto;
}
.section-header {
    text-align: center;
    margin-bottom: 44px;
}
.section-header .section-label {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--color-blue);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 8px;
    padding: 4px 14px;
    background-color: rgba(41, 148, 178, 0.08);
    border-radius: 20px;
}
.section-header h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--color-dark);
    margin-bottom: 10px;
    letter-spacing: 0.03em;
}
.section-header .divider {
    width: 50px;
    height: 3px;
    background-color: var(--color-gold);
    margin: 12px auto 0;
    border-radius: 3px;
}
.bg-white {
    background-color: var(--color-white);
}
.bg-light {
    background-color: var(--color-light);
}

@media (max-width: 768px) {
    .section {
        padding: 40px 16px;
    }
    .section-header {
        margin-bottom: 30px;
    }
}

/* ========== 企业简介 ========== */
.about-grid {
    display: flex;
    gap: 40px;
    align-items: stretch;
    flex-wrap: wrap;
}
.about-image {
    flex: 1 1 350px;
    min-width: 280px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}
.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 4/3;
    display: block;
}
.about-text {
    flex: 1 1 380px;
    min-width: 280px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.about-text h3 {
    font-size: 1.4rem;
    color: var(--color-dark);
    margin-bottom: 14px;
    font-weight: 700;
}
.about-text p {
    color: var(--color-text-light);
    margin-bottom: 12px;
    line-height: 1.8;
    font-size: 0.95rem;
}
.about-highlights {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 16px;
}
.about-highlight-item {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--color-light);
    padding: 12px 18px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    color: var(--color-dark);
    font-size: 0.9rem;
    border-left: 3px solid var(--color-gold);
}
.about-highlight-item .icon-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--color-blue);
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .about-grid {
        gap: 24px;
    }
    .about-highlights {
        gap: 10px;
    }
    .about-highlight-item {
        padding: 10px 14px;
        font-size: 0.85rem;
    }
}

/* ========== 产品介绍 ========== */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 24px;
}
.product-card {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    border: 1px solid transparent;
}
.product-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: #e8e4d8;
}
.product-card-img {
    width: 100%;
    aspect-ratio: 4/3;
    overflow: hidden;
    background-color: #f9f7f0;
}
.product-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}
.product-card:hover .product-card-img img {
    transform: scale(1.06);
}
.product-card-body {
    padding: 18px 16px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.product-card-body h4 {
    font-size: 1.05rem;
    color: var(--color-dark);
    margin-bottom: 6px;
    font-weight: 700;
}
.product-card-body p {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-bottom: 12px;
    flex: 1;
}
.product-card-body .tag-row {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.product-tag {
    font-size: 0.75rem;
    padding: 3px 10px;
    background-color: #fef9e7;
    color: #b8860b;
    border-radius: 12px;
    font-weight: 500;
}
@media (max-width: 600px) {
    .products-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .product-card-body {
        padding: 12px 10px 14px;
    }
    .product-card-body h4 {
        font-size: 0.9rem;
    }
}

/* ========== Brand 品牌展示 ========== */
.brand-showcase {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    align-items: center;
}
.brand-intro {
    flex: 1 1 300px;
    min-width: 260px;
}
.brand-intro h3 {
    font-size: 1.4rem;
    color: var(--color-dark);
    margin-bottom: 12px;
    font-weight: 700;
}
.brand-intro p {
    color: var(--color-text-light);
    line-height: 1.8;
    font-size: 0.95rem;
}
.brand-logos {
    flex: 2 1 500px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 16px;
    align-items: center;
}
.brand-logo-item {
    background-color: var(--color-white);
    border-radius: var(--radius-sm);
    padding: 16px 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    aspect-ratio: 2/1;
}
.brand-logo-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
}
.brand-logo-item img {
    max-width: 100%;
    max-height: 50px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: grayscale(30%);
    transition: var(--transition);
}
.brand-logo-item:hover img {
    filter: grayscale(0%);
}
@media (max-width: 768px) {
    .brand-logos {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
    }
    .brand-logo-item {
        padding: 10px 6px;
    }
    .brand-logo-item img {
        max-height: 36px;
    }
}

/* ========== 新闻资讯 ========== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 24px;
}
.news-card {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    border: 1px solid transparent;
}
.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: #e8e4d8;
}
.news-card-img {
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    background-color: #f5f5f0;
}
.news-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}
.news-card:hover .news-card-img img {
    transform: scale(1.05);
}
.news-card-body {
    padding: 16px 18px 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.news-card-body .news-date {
    font-size: 0.78rem;
    color: #999;
    margin-bottom: 6px;
}
.news-card-body h4 {
    font-size: 1rem;
    color: var(--color-dark);
    margin-bottom: 8px;
    font-weight: 700;
    line-height: 1.4;
}
.news-card-body p {
    font-size: 0.85rem;
    color: var(--color-text-light);
    flex: 1;
    line-height: 1.6;
}
.news-card-body .read-more {
    display: inline-block;
    margin-top: 10px;
    color: var(--color-blue);
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    transition: var(--transition);
}
.news-card-body .read-more:hover {
    color: var(--color-gold);
}
@media (max-width: 600px) {
    .news-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

/* ========== 公司地址 ========== */
.address-block {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
    align-items: stretch;
}
.address-info {
    flex: 1 1 350px;
    min-width: 280px;
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    padding: 30px;
    box-shadow: var(--shadow-md);
    border-left: 5px solid var(--color-gold);
}
.address-info h3 {
    font-size: 1.3rem;
    color: var(--color-dark);
    margin-bottom: 16px;
    font-weight: 700;
}
.address-info .addr-line {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    margin-bottom: 10px;
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.6;
}
.address-info .addr-line .addr-icon {
    width: 28px;
    height: 28px;
    background-color: var(--color-blue);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}
.address-map {
    flex: 1 1 400px;
    min-width: 280px;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    background-color: #e8e4d8;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 260px;
}
.address-map img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    aspect-ratio: 16/10;
    display: block;
}
@media (max-width: 768px) {
    .address-info {
        padding: 20px;
    }
    .address-map {
        min-height: 200px;
    }
}

/* ========== 联系我们 ========== */
.contact-grid {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}
.contact-form-wrap {
    flex: 1 1 400px;
    min-width: 280px;
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    padding: 30px;
    box-shadow: var(--shadow-md);
}
.contact-form-wrap h3 {
    font-size: 1.3rem;
    color: var(--color-dark);
    margin-bottom: 20px;
    font-weight: 700;
}
.form-group {
    margin-bottom: 16px;
}
.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-dark);
    margin-bottom: 5px;
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid #e0dcd0;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-family: inherit;
    transition: var(--transition);
    background-color: #fdfcfa;
    color: var(--color-text);
    resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--color-blue);
    box-shadow: 0 0 0 3px rgba(41, 148, 178, 0.1);
    background-color: #fff;
}
.form-group textarea {
    min-height: 100px;
}
.btn-submit {
    width: 100%;
    padding: 13px;
    background-color: var(--color-gold);
    color: var(--color-dark);
    border: none;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.03em;
}
.btn-submit:hover {
    background-color: #e6a200;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 180, 0, 0.4);
}
.contact-details {
    flex: 1 1 300px;
    min-width: 260px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.contact-detail-card {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid transparent;
}
.contact-detail-card:hover {
    border-color: #e8e4d8;
    box-shadow: var(--shadow-md);
}
.contact-detail-card .cdc-label {
    font-size: 0.78rem;
    color: #999;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 4px;
}
.contact-detail-card .cdc-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-dark);
}
.contact-detail-card .cdc-value a {
    color: var(--color-blue);
    text-decoration: none;
}
.contact-detail-card .cdc-value a:hover {
    text-decoration: underline;
}
@media (max-width: 768px) {
    .contact-form-wrap {
        padding: 20px;
    }
}

/* ========== 服务优势 ========== */
.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
}
.advantage-card {
    text-align: center;
    padding: 28px 18px;
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-top: 4px solid transparent;
}
.advantage-card:hover {
    border-top-color: var(--color-gold);
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}
.advantage-card .adv-icon-circle {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background-color: rgba(41, 148, 178, 0.1);
    margin: 0 auto 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-blue);
}
.advantage-card h4 {
    font-size: 1rem;
    color: var(--color-dark);
    margin-bottom: 6px;
    font-weight: 700;
}
.advantage-card p {
    font-size: 0.83rem;
    color: var(--color-text-light);
    line-height: 1.5;
}
@media (max-width: 600px) {
    .advantages-grid {
        grid-template-columns: 1fr 1fr;
        gap: 12px;
    }
    .advantage-card {
        padding: 20px 12px;
    }
}

/* ========== 底部导航 - 100%宽度 ========== */
.footer {
    width: 100%;
    background-color: var(--color-dark);
    color: #ccc;
    padding: 0;
}
.footer-top {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 40px 20px;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 30px;
}
.footer-col h4 {
    color: #fff;
    font-size: 1.05rem;
    margin-bottom: 16px;
    font-weight: 700;
    position: relative;
    padding-bottom: 10px;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 30px;
    height: 2px;
    background-color: var(--color-gold);
    border-radius: 2px;
}
.footer-col ul {
    list-style: none;
}
.footer-col ul li {
    margin-bottom: 8px;
}
.footer-col ul li a {
    color: #bbb;
    text-decoration: none;
    font-size: 0.88rem;
    transition: var(--transition);
    display: inline-block;
    padding: 2px 0;
}
.footer-col ul li a:hover {
    color: var(--color-gold);
    transform: translateX(3px);
}
.footer-col p {
    font-size: 0.88rem;
    line-height: 1.7;
    color: #bbb;
}
.footer-bottom {
    width: 100%;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 16px 20px;
    text-align: center;
    font-size: 0.82rem;
    color: #999;
    background-color: rgba(0, 0, 0, 0.15);
}
.footer-bottom a {
    color: var(--color-gold);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}
.footer-bottom a:hover {
    text-decoration: underline;
    color: #ffc933;
}
.footer-mobile-link {
    display: inline-block;
    margin-top: 8px;
    padding: 8px 18px;
    background-color: var(--color-gold);
    color: var(--color-dark) !important;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.85rem;
    text-decoration: none;
    transition: var(--transition);
}
.footer-mobile-link:hover {
    background-color: #ffc933;
    text-decoration: none !important;
    transform: translateY(-2px);
}
@media (max-width: 768px) {
    .footer-top {
        grid-template-columns: 1fr 1fr;
        gap: 20px;
        padding: 30px 16px;
    }
    .footer-col h4 {
        font-size: 0.95rem;
    }
}
@media (max-width: 480px) {
    .footer-top {
        grid-template-columns: 1fr;
    }
}

/* ========== 回到顶部 ========== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 24px;
    width: 44px;
    height: 44px;
    background-color: var(--color-blue);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 900;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 700;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    border: none;
}
.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.back-to-top:hover {
    background-color: var(--color-gold);
    color: var(--color-dark);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* ========== 通用图片响应式 ========== */
img {
    max-width: 100%;
    height: auto;
}

/* 骨架屏/加载占位 */
img[loading="lazy"] {
    background-color: #f0ede4;
    transition: opacity 0.4s ease;
}
img[loading="lazy"].loaded {
    background-color: transparent;
}

/* 响应式iframe（如地图） */
.responsive-media {
    width: 100%;
    aspect-ratio: 16/10;
    border: none;
    border-radius: var(--radius-md);
}