/* 顶部信息栏 */
.header-top {
    background: linear-gradient(135deg, #D32F2F 0%, #C62828 100%);
    color: white;
    padding: 0.5rem 0;
    font-size: 0.9rem;
}

/* 爱上海特色标签栏 */
.aish-tags-bar {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 0.8rem 0;
    border-bottom: 3px solid var(--sh-red);
}
.aish-tags {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.aish-tag {
    color: white;
    font-size: 0.95rem;
    padding: 0.4rem 1.2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    transition: all 0.3s ease;
    cursor: pointer;
}
.aish-tag:hover {
    background: var(--sh-red);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(211, 47, 47, 0.3);
}
.aish-tag i {
    margin-right: 0.5rem;
}

/* 品牌包装器 */
.brand-wrapper {
    display: flex;
    align-items: center;
    gap: 1rem;
}
.logo-img {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--sh-red);
}
.brand-text h1 {
    font-size: 1.5rem;
    margin: 0;
    color: var(--sh-red);
    font-weight: bold;
}
.brand-text p {
    font-size: 0.85rem;
    margin: 0;
    color: #666;
}

/* 爱上海城市展示 */
.aish-city-showcase {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    padding: 1.5rem 0;
}
.city-showcase-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}
.city-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}
.city-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}
.city-item img {
    width: 100%;
    height: 120px;
    object-fit: cover;
}
.city-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: white;
    padding: 1rem;
    transition: all 0.3s ease;
}
.city-overlay h4 {
    font-size: 1rem;
    margin: 0 0 0.3rem 0;
}
.city-overlay p {
    font-size: 0.8rem;
    margin: 0;
    opacity: 0.9;
}
.city-item:hover .city-overlay {
    background: linear-gradient(to top, rgba(211, 47, 47, 0.9), rgba(211, 47, 47, 0.5));
}

@media (max-width: 768px) {
    .city-showcase-content {
        grid-template-columns: repeat(2, 1fr);
    }
    .aish-tags {
        gap: 0.8rem;
    }
    .aish-tag {
        font-size: 0.85rem;
        padding: 0.3rem 0.8rem;
    }
    .brand-text h1 {
        font-size: 1.2rem;
    }
    .logo-img {
        width: 50px;
        height: 50px;
    }
}
.header-top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}
.header-top-info {
    display: flex;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
}
.header-top-info i {
    margin-right: 0.5rem;
}
.header-top-social {
    display: flex;
    gap: 1rem;
}
.header-top-social a {
    color: white;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}
.header-top-social a:hover {
    transform: translateY(-3px);
    color: var(--sh-gold);
}

/* 导航栏增强 */
.navbar {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    background-color: white !important;
}
.navbar-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--sh-red) !important;
}
.navbar-brand img {
    height: 60px;
}
.nav-link {
    font-weight: 500;
    color: var(--sh-dark) !important;
    padding: 0.8rem 1.2rem !important;
    transition: all 0.3s ease;
    border-radius: 4px;
}
.nav-link:hover,
.nav-link.active {
    color: var(--sh-red) !important;
    background-color: rgba(211, 47, 47, 0.05);
}
.nav-link.active::after {
    content: "";
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--sh-red);
    position: absolute;
    bottom: 0;
    left: 0;
}
.login-btn {
    background-color: var(--sh-red);
    color: white !important;
    border-radius: 20px;
    padding: 0.6rem 1.5rem !important;
    font-weight: 600;
    transition: all 0.3s ease;
}
.login-btn:hover {
    background-color: var(--sh-dark-red);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(211, 47, 47, 0.2);
}

/* 全局重置与基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
}

body {
    color: #424242;
    background-color: #FAFAFA;
    line-height: 1.6;
    scroll-behavior: smooth;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: 1480px;
    margin: 0 auto;
    padding: 0 20px;
}

@media (max-width: 1480px) {
    .container {
        width: 100%;
    }
}

/* 自定义颜色体系 */
:root {
    --sh-red: #D32F2F;
    --sh-light-red: #EF5350;
    --sh-dark-red: #C62828;
    --sh-blue: #1976D2;
    --sh-gold: #FFB74D;
    --sh-gray: #424242;
    --sh-light: #FAFAFA;
    --sh-dark: #212121;
    --sh-silver: #EEEEEE;
}

/* 通用组件样式 */
.btn {
    display: inline-block;
    padding: 0.6rem 1.5rem;
    border-radius: 4px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-align: center;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: var(--sh-red);
    color: white;
}

.btn-primary:hover {
    background-color: var(--sh-dark-red);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(211, 47, 47, 0.2);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--sh-red);
    color: var(--sh-red);
}

.btn-outline:hover {
    background-color: var(--sh-red);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(211, 47, 47, 0.1);
}

.section-title {
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
}

.section-title h2 {
    font-size: 2rem;
    color: var(--sh-dark);
    display: inline-block;
}

.section-title h2::after {
    content: "";
    display: block;
    width: 60px;
    height: 3px;
    background-color: var(--sh-red);
    margin: 0.8rem auto 0;
}

.section-title p {
    color: #666;
    margin-top: 1rem;
    font-size: 1rem;
}

.card {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    position: relative;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--sh-red);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 9999;
    box-shadow: 0 4px 8px rgba(211, 47, 47, 0.3);
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

/* 导航栏 */
.navbar {
    background-color: white;
    padding: 1rem 0;
    z-index: 999;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.navbar:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 1.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 1rem;
    position: relative;
}

.logo img {
    height: 50px;
}

.navbar-nav {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-item a {
    font-weight: 500;
    padding: 0.8rem 1.2rem;
    position: relative;
    display: block;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.nav-item a:hover, 
.nav-item a.active {
    color: var(--sh-red);
    background-color: rgba(211, 47, 47, 0.05);
}

.nav-item a.active::after {
    content: "";
    display: block;
    width: 100%;
    height: 2px;
    background-color: var(--sh-red);
    position: absolute;
    bottom: 0;
    left: 0;
}

/* 爱上海特色标签 */
.aish-feature-tags {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
    background: linear-gradient(135deg, rgba(211, 47, 47, 0.95) 0%, rgba(198, 40, 40, 0.95) 100%);
    padding: 0.8rem 0;
}
.feature-tags-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}
.feature-tag {
    color: white;
    font-size: 0.95rem;
    padding: 0.4rem 1.2rem;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 25px;
    transition: all 0.3s ease;
    cursor: pointer;
    font-weight: 500;
}
.feature-tag:hover {
    background: white;
    color: var(--sh-red);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}
.feature-tag i {
    margin-right: 0.5rem;
}

/* 轮播图样式 */
.hero {
    height: 85vh;
    min-height: 700px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 60px;
}

/* 轮播图遮罩层 */
.carousel-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.4) 100%);
    z-index: 1;
}

/* 轮播图徽章 */
.carousel-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--sh-red) 0%, var(--sh-dark-red) 100%);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1rem;
    animation: fadeUp 1s ease;
}

/* 轮播图副标题 */
.carousel-content .subtitle {
    font-size: 1.3rem;
    color: var(--sh-gold);
    margin-bottom: 1rem;
    font-weight: 500;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

/* 轮播图特色标签 */
.carousel-features {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 1.5rem 0;
    flex-wrap: wrap;
}
.carousel-features span {
    color: white;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 20px;
}
.carousel-features i {
    color: var(--sh-gold);
}

/* 轮播图描述 */
.carousel-content .description {
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto 2rem;
    line-height: 1.8;
}

.carousel {
    width: 100%;
    height: 100%;
    position: relative;
}

.carousel-item {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease;
    background-size: cover;
    background-position: center;
}

.carousel-item.active {
    opacity: 1;
}

.carousel-item::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
}

.carousel-content {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 2;
    color: white;
    text-align: center;
    max-width: 800px;
    padding: 0 1rem;
}

.carousel-content h2 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    animation: fadeUp 1.5s ease;
}

.carousel-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    animation: fadeUp 2s ease;
}

.carousel-btns {
    display: flex;
    justify-content: center;
    gap: 1rem;
    animation: fadeUp 2.5s ease;
}

.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}

.carousel-indicator {
    width: auto;
    height: auto;
    border-radius: 20px;
    background-color: rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0.5rem 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}
.carousel-indicator span {
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
}
.carousel-indicator.active {
    background-color: var(--sh-red);
    width: auto;
    border-radius: 20px;
}

/* 轮播图统计信息 */
.carousel-stats {
    position: absolute;
    bottom: 100px;
    left: 0;
    right: 0;
    z-index: 5;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}
.stat-item {
    text-align: center;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: 1rem;
    border-radius: 10px;
    transition: all 0.3s ease;
}
.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.25);
}
.stat-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--sh-gold);
    margin-bottom: 0.3rem;
}
.stat-label {
    color: white;
    font-size: 0.95rem;
}

.carousel-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 3;
    transition: all 0.3s ease;
}

.carousel-control:hover {
    background-color: rgba(255, 255, 255, 0.4);
}

.carousel-control.prev {
    left: 20px;
}

.carousel-control.next {
    right: 20px;
}

/* 动画效果 */
@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* 平台特色 */
.features {
    padding: 5rem 0;
    background-color: var(--sh-light);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 2rem;
}

.feature-card {
    padding: 2rem 1.5rem;
    text-align: center;
}

.feature-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: rgba(211, 47, 47, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.3s ease;
}

.feature-icon:hover {
    background-color: rgba(211, 47, 47, 0.2);
    transform: scale(1.05);
}

.feature-icon i {
    font-size: 2rem;
    color: var(--sh-red);
    transition: all 0.3s ease;
}

.feature-icon:hover i {
    color: var(--sh-dark-red);
    transform: scale(1.1);
}

.feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--sh-dark);
}

.feature-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

/* 关于我们 */
.about-us {
    padding: 5rem 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 4rem;
    align-items: center;
}

.about-text h3 {
    font-size: 1.5rem;
    color: var(--sh-dark);
    margin-bottom: 1rem;
    margin-top: 1.5rem;
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1rem;
}

.about-advantages {
    list-style: none;
    padding: 0;
}

.about-advantages li {
    padding: 0.5rem 0;
    color: #666;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.about-advantages i {
    color: var(--sh-red);
    font-size: 1.1rem;
}

.about-image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.about-image-item {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.about-image-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
}

.about-image-item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.about-image-item:hover img {
    transform: scale(1.1);
}

.about-image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(211, 47, 47, 0.95), transparent);
    color: white;
    padding: 1rem;
    text-align: center;
}

.about-image-overlay h4 {
    font-size: 1rem;
    margin: 0;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.about-feature-card {
    background: white;
    padding: 2rem 1.5rem;
    text-align: center;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.about-feature-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.about-feature-icon {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--sh-red) 0%, var(--sh-dark-red) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.3s ease;
}

.about-feature-card:hover .about-feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.about-feature-icon i {
    font-size: 2.2rem;
    color: white;
}

.about-feature-card h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--sh-dark);
}

.about-feature-card p {
    color: #666;
    line-height: 1.6;
}

.about-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    background: white;
    padding: 3rem 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

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

.stat-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--sh-red) 0%, var(--sh-dark-red) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.stat-icon i {
    font-size: 1.8rem;
    color: white;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--sh-dark);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: #666;
}

/* 爱上海419论坛怎么进 */
.forum-guide {
    padding: 5rem 0;
    background-color: white;
}

/* 三种访问方式 */
.access-methods {
    margin-bottom: 4rem;
}

.access-methods h3 {
    text-align: center;
    font-size: 1.8rem;
    color: var(--sh-dark);
    margin-bottom: 2.5rem;
}

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

.method-card {
    background: linear-gradient(135deg, rgba(211, 47, 47, 0.05) 0%, rgba(198, 40, 40, 0.05) 100%);
    padding: 2rem 1.5rem;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.method-card:hover {
    transform: translateY(-8px);
    border-color: var(--sh-red);
    box-shadow: 0 10px 30px rgba(211, 47, 47, 0.15);
}

.method-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--sh-red) 0%, var(--sh-dark-red) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.method-icon i {
    font-size: 2rem;
    color: white;
}

.method-card h4 {
    font-size: 1.3rem;
    color: var(--sh-dark);
    margin-bottom: 1rem;
}

.method-card p {
    color: #666;
    margin-bottom: 1rem;
    line-height: 1.6;
}

.method-card strong {
    color: var(--sh-red);
    font-size: 1.1rem;
}

.method-tip {
    background: rgba(255, 193, 7, 0.1);
    padding: 0.8rem;
    border-radius: 8px;
    color: #f39c12;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.method-tip i {
    font-size: 1.1rem;
}

.qr-small {
    margin-top: 1rem;
}

.qr-small img {
    width: 120px;
    height: 120px;
    object-fit: cover;
    border-radius: 10px;
    border: 3px solid var(--sh-red);
}

/* 详细步骤 */
.detailed-steps {
    margin-bottom: 4rem;
}

.detailed-steps h3 {
    text-align: center;
    font-size: 1.8rem;
    color: var(--sh-dark);
    margin-bottom: 2.5rem;
}

.steps-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.steps-timeline::before {
    content: '';
    position: absolute;
    left: 35px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--sh-red) 0%, var(--sh-dark-red) 100%);
}

.timeline-item {
    position: relative;
    padding-left: 100px;
    margin-bottom: 2.5rem;
}

.timeline-number {
    position: absolute;
    left: 0;
    top: 0;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--sh-red) 0%, var(--sh-dark-red) 100%);
    color: white;
    font-size: 1.8rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 4px solid white;
    box-shadow: 0 4px 15px rgba(211, 47, 47, 0.3);
}

.timeline-content {
    background: white;
    padding: 1.5rem 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    border-left: 4px solid var(--sh-red);
}

.timeline-content h4 {
    font-size: 1.3rem;
    color: var(--sh-dark);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

.timeline-content strong {
    color: var(--sh-red);
}

/* 快速入口 */
.quick-entries {
    margin-bottom: 4rem;
}

.quick-entries h3 {
    text-align: center;
    font-size: 1.8rem;
    color: var(--sh-dark);
    margin-bottom: 2.5rem;
}

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

.entry-card {
    background: white;
    padding: 2rem 1.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    text-decoration: none;
    border: 2px solid transparent;
}

.entry-card:hover {
    transform: translateY(-8px);
    border-color: var(--sh-red);
    box-shadow: 0 8px 25px rgba(211, 47, 47, 0.15);
}

.entry-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--sh-red) 0%, var(--sh-dark-red) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.2rem;
}

.entry-icon i {
    font-size: 1.8rem;
    color: white;
}

.entry-card h4 {
    font-size: 1.2rem;
    color: var(--sh-dark);
    margin-bottom: 0.5rem;
}

.entry-card p {
    color: #666;
    font-size: 0.95rem;
    margin: 0;
}

/* 注意事项 */
.notice-section h3 {
    text-align: center;
    font-size: 1.8rem;
    color: var(--sh-dark);
    margin-bottom: 2.5rem;
}

.notice-list {
    max-width: 900px;
    margin: 0 auto;
}

.notice-item {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: linear-gradient(135deg, rgba(211, 47, 47, 0.03) 0%, rgba(198, 40, 40, 0.03) 100%);
    border-radius: 12px;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.notice-item > i {
    font-size: 2rem;
    color: var(--sh-red);
    flex-shrink: 0;
    margin-top: 0.2rem;
}

.notice-content h4 {
    font-size: 1.2rem;
    color: var(--sh-dark);
    margin-bottom: 0.5rem;
}

.notice-content p {
    color: #666;
    line-height: 1.7;
    margin: 0;
}

.notice-content strong {
    color: var(--sh-red);
}

/* 平台介绍 */
.platform-intro {
    background: linear-gradient(135deg, rgba(211, 47, 47, 0.05) 0%, rgba(198, 40, 40, 0.05) 100%);
    padding: 2.5rem;
    border-radius: 15px;
    margin-bottom: 3rem;
    text-align: center;
}

.platform-intro h3 {
    font-size: 1.8rem;
    color: var(--sh-dark);
    margin-bottom: 1.5rem;
}

.platform-intro p {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
}

.intro-highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.intro-highlight {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: white;
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.intro-highlight i {
    color: var(--sh-red);
    font-size: 1.2rem;
}

.intro-highlight span {
    color: var(--sh-dark);
    font-weight: 500;
}

.guide-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.guide-step {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    padding: 2rem 1.5rem;
    border-radius: 15px;
    text-align: center;
    position: relative;
    transition: all 0.3s ease;
}

.guide-step:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--sh-red) 0%, var(--sh-dark-red) 100%);
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: rgba(211, 47, 47, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 1rem auto 1.5rem;
}

.step-icon i {
    font-size: 2rem;
    color: var(--sh-red);
}

.guide-step h3 {
    font-size: 1.2rem;
    color: var(--sh-dark);
    margin-bottom: 1rem;
}

.guide-step p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.step-tip {
    background: rgba(255, 193, 7, 0.1);
    padding: 0.8rem;
    border-radius: 8px;
    color: #f39c12;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.step-tip i {
    font-size: 1.1rem;
}

.step-detail {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px dashed rgba(0, 0, 0, 0.1);
}

.step-detail p {
    color: #777;
    font-size: 0.9rem;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
}

.step-detail i {
    color: var(--sh-gold);
}

.guide-card-features {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
    text-align: left;
}

.guide-card-features li {
    padding: 0.5rem 0;
    color: #666;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.guide-card-features i {
    color: var(--sh-red);
    font-size: 1rem;
}

.guide-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 4rem;
}

.guide-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.guide-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.guide-card-icon {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--sh-red) 0%, var(--sh-dark-red) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.guide-card-icon i {
    font-size: 2.5rem;
    color: white;
}

.guide-card h3 {
    font-size: 1.4rem;
    color: var(--sh-dark);
    margin-bottom: 1rem;
}

.guide-card p {
    color: #666;
    margin-bottom: 1.5rem;
}

.qr-code {
    margin-top: 1rem;
}

.qr-code img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 0.5rem;
}

.qr-code p {
    color: #666;
    font-size: 0.95rem;
}

.btn-lg {
    padding: 0.8rem 2rem;
    font-size: 1.1rem;
}

.btn-lg i {
    margin-right: 0.5rem;
}

.guide-faq {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
    padding: 3rem 2rem;
    border-radius: 15px;
}

.guide-faq h3 {
    text-align: center;
    font-size: 1.6rem;
    color: var(--sh-dark);
    margin-bottom: 2rem;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 10px;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.faq-question {
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background-color: rgba(211, 47, 47, 0.05);
}

.faq-question h4 {
    font-size: 1.1rem;
    color: var(--sh-dark);
    margin: 0;
}

.faq-question i {
    color: var(--sh-red);
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 1.5rem 1.5rem;
    max-height: 500px;
}

.faq-answer p {
    color: #666;
    line-height: 1.8;
    margin: 0;
}

/* 论坛版块介绍 */
.forum-sections {
    margin-bottom: 4rem;
}

.forum-sections h3 {
    text-align: center;
    font-size: 1.8rem;
    color: var(--sh-dark);
    margin-bottom: 2.5rem;
}

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

.section-card {
    background: white;
    padding: 2rem 1.5rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.section-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: var(--sh-red);
}

.section-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--sh-red) 0%, var(--sh-dark-red) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.3s ease;
}

.section-card:hover .section-icon {
    transform: scale(1.1) rotate(5deg);
}

.section-icon i {
    font-size: 2rem;
    color: white;
}

.section-card h4 {
    font-size: 1.3rem;
    color: var(--sh-dark);
    margin-bottom: 1rem;
}

.section-card p {
    color: #666;
    line-height: 1.7;
}

/* 婚恋相亲区 */
.dating {
    padding: 5rem 0;
    background-color: white;
}

.dating-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 1.5rem;
}

.member-card-img {
    height: 180px;
    overflow: hidden;
    position: relative;
}

.member-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

.card:hover .member-card-img img {
    transform: scale(1.08) rotate(1deg);
}

.member-badge {
    position: absolute;
    top: 10px;
    left: 10px;
    background-color: var(--sh-red);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: bold;
    z-index: 1;
}

.member-card-content {
    padding: 1.2rem;
}

.member-card-content h3 {
    font-size: 1.1rem;
    margin-bottom: 0.6rem;
    color: var(--sh-dark);
}

.member-info {
    display: flex;
    flex-wrap: wrap;
    gap: 0.6rem;
    margin-bottom: 0.8rem;
    font-size: 0.85rem;
    color: #666;
}

.member-info span {
    background: rgba(211, 47, 47, 0.08);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
}

.member-card-content p {
    color: #666;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* 同城活动区 */
.activities {
    padding: 5rem 0;
    background-color: var(--sh-light);
}

.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.activity-card-img {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.activity-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

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

.activity-date {
    position: absolute;
    bottom: 10px;
    left: 10px;
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    font-size: 0.8rem;
    z-index: 1;
}

.activity-card-content {
    padding: 1.5rem;
}

.activity-card-content h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--sh-dark);
}

.activity-info {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 1rem;
    font-size: 0.9rem;
    color: #666;
}

.activity-info i {
    color: var(--sh-red);
    margin-right: 0.3rem;
}

.activity-card-content p {
    color: #666;
    margin-bottom: 1.2rem;
    font-size: 0.95rem;
}

/* 夜生活指南 */
.nightlife {
    padding: 5rem 0;
    background-color: white;
}

.nightlife-tabs {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.nightlife-tab {
    padding: 0.8rem 2rem;
    background-color: white;
    border-radius: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    cursor: pointer;
    transition: all 0.3s ease;
}

.nightlife-tab.active {
    background-color: var(--sh-red);
    color: white;
    transform: translateY(-3px);
}

.nightlife-content {
    min-height: 400px;
}

.nightlife-item {
    display: none;
}

.nightlife-item.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

.nightlife-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.nightlife-card-img {
    height: 200px;
    overflow: hidden;
    position: relative;
}

.nightlife-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s ease;
}

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

.nightlife-card-content {
    padding: 1.5rem;
}

.nightlife-card-content h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--sh-dark);
}

.nightlife-rating {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    margin-bottom: 1rem;
    color: var(--sh-gold);
    font-size: 0.9rem;
}

.nightlife-rating i {
    font-size: 1rem;
    transition: all 0.3s ease;
}

.nightlife-rating span {
    margin-left: 0.5rem;
    color: var(--sh-dark);
    font-weight: 500;
    font-size: 1rem;
    min-width: 45px;
    text-align: right;
}

.nightlife-card-content p {
    color: #666;
    margin-bottom: 1.2rem;
    font-size: 0.95rem;
}

.nightlife-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: #666;
}

.nightlife-info i {
    color: var(--sh-red);
    margin-right: 0.3rem;
}

/* 成功案例 */
.success {
    padding: 5rem 0;
    background-color: var(--sh-light);
}

.success-slider {
    display: flex;
    gap: 2rem;
    overflow-x: auto;
    padding: 1rem 0 2rem;
    scroll-snap-type: x mandatory;
}

.success-slider::-webkit-scrollbar {
    height: 6px;
}

.success-slider::-webkit-scrollbar-thumb {
    background-color: var(--sh-silver);
    border-radius: 3px;
}

.success-card {
    flex: 0 0 350px;
    padding: 2rem;
    scroll-snap-align: start;
}

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

.success-avatar {
    position: relative;
    width: 60px;
    height: 60px;
}

.success-avatar img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid white;
}

.success-avatar .second-avatar {
    position: absolute;
    top: 0;
    right: -20px;
    width: 40px;
    height: 40px;
}

.success-info h4 {
    font-size: 1.1rem;
    color: var(--sh-dark);
}

.success-info .date {
    font-size: 0.85rem;
    color: #999;
}

.success-text {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

/* 注册/登录区 */
.register {
    padding: 5rem 0;
    background-color: white;
}

.register-form {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    background-color: var(--sh-light);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.register-form form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.form-group {
    flex: 1;
    min-width: 250px;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--sh-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--sh-silver);
    border-radius: 4px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--sh-red);
    box-shadow: 0 0 0 2px rgba(211, 47, 47, 0.1);
}

.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.form-check input {
    width: auto;
}

.login-link {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.9rem;
}

.login-link a {
    color: var(--sh-red);
    font-weight: 500;
}

/* 联系我们 */
.contact {
    padding: 5rem 0;
    background-color: var(--sh-light);
}

.contact-content {
    display: flex;
    flex-wrap: wrap;
    gap: 3rem;
    align-items: flex-start;
}

.contact-info {
    flex: 1 1 300px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--sh-red);
    margin-top: 0.2rem;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--sh-dark);
}

.contact-item p {
    color: #666;
    margin: 0;
}

.contact-form {
    flex: 1 1 400px;
    background-color: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.contact-form form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* 页脚 */
.footer {
    background-color: var(--sh-dark);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo img {
    height: 60px;
}

.footer-logo p {
    color: #999;
    line-height: 1.6;
}

.footer-links h4 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--sh-gold);
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-links h4::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--sh-gold);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-links a {
    transition: all 0.3s ease;
    color: #999;
}

.footer-links a:hover {
    color: var(--sh-gold);
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--sh-red);
    transform: translateY(-3px);
    padding-left: 0;
}

.footer-bottom {
    text-align: center;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-top-info {
        gap: 1rem;
    }
    .navbar-nav {
        flex-direction: column;
        width: 100%;
        gap: 0.5rem;
        padding: 1rem 0;
    }
    .nav-item {
        width: 100%;
        text-align: center;
    }
    .nav-link {
        padding: 0.6rem 1rem !important;
    }
    .login-btn {
        margin-top: 1rem;
        width: fit-content;
    }
    
    /* 爱上海特色标签响应式 */
    .aish-feature-tags {
        padding: 0.5rem 0;
    }
    .feature-tags-wrapper {
        gap: 0.5rem;
    }
    .feature-tag {
        font-size: 0.8rem;
        padding: 0.3rem 0.8rem;
    }
    
    /* 轮播图响应式 */
    .hero {
        height: 90vh;
        min-height: 600px;
        padding-top: 100px;
    }
    .carousel-content h2 {
        font-size: 2rem;
    }
    .carousel-content .subtitle {
        font-size: 1rem;
    }
    .carousel-features {
        gap: 0.8rem;
    }
    .carousel-features span {
        font-size: 0.85rem;
        padding: 0.4rem 0.8rem;
    }
    .carousel-content .description {
        font-size: 0.95rem;
    }
    .carousel-btns {
        flex-direction: column;
        align-items: center;
    }
    .carousel-btns .btn {
        width: 100%;
        max-width: 250px;
    }
    
    /* 轮播指示器响应式 */
    .carousel-indicators {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.5rem;
    }
    .carousel-indicator {
        padding: 0.4rem 0.8rem;
    }
    .carousel-indicator span {
        font-size: 0.8rem;
    }
    
    /* 轮播统计响应式 */
    .carousel-stats {
        bottom: 80px;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        max-width: 100%;
        padding: 0 1rem;
    }
    .stat-number {
        font-size: 1.5rem;
    }
    .stat-label {
        font-size: 0.85rem;
    }
    
    /* 婚恋相亲区响应式 */
    .dating-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 1.2rem;
    }
    .member-card-img {
        height: 160px;
    }
    .member-card-content {
        padding: 1rem;
    }
    .member-card-content h3 {
        font-size: 1rem;
    }
    .member-info {
        gap: 0.4rem;
    }
    .member-info span {
        font-size: 0.8rem;
    }
    .member-card-content p {
        font-size: 0.85rem;
    }
    
    /* 关于我们响应式 */
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .about-image-grid {
        grid-template-columns: 1fr 1fr;
    }
    .about-features {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: 1.5rem;
    }
    .about-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
        padding: 2rem 1.5rem;
    }
    .stat-number {
        font-size: 2rem;
    }
    
    /* 论坛指南响应式 */
    .guide-steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    .guide-step {
        padding: 1.5rem 1rem;
    }
    .step-icon {
        width: 60px;
        height: 60px;
    }
    .step-icon i {
        font-size: 1.5rem;
    }
    .guide-actions {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .guide-card {
        padding: 2rem 1.5rem;
    }
    .guide-card-icon {
        width: 80px;
        height: 80px;
    }
    .guide-card-icon i {
        font-size: 2rem;
    }
    .qr-code img {
        width: 120px;
        height: 120px;
    }
    .guide-faq {
        padding: 2rem 1.5rem;
    }
    
    /* 平台介绍响应式 */
    .platform-intro {
        padding: 2rem 1.5rem;
    }
    .platform-intro h3 {
        font-size: 1.5rem;
    }
    .platform-intro p {
        font-size: 1rem;
    }
    .intro-highlights {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    
    /* 论坛版块介绍响应式 */
    .forum-sections h3 {
        font-size: 1.5rem;
    }
    .sections-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    .section-card {
        padding: 1.5rem 1rem;
    }
    .section-icon {
        width: 60px;
        height: 60px;
    }
    .section-icon i {
        font-size: 1.5rem;
    }
    .section-card h4 {
        font-size: 1.1rem;
    }
    .section-card p {
        font-size: 0.95rem;
    }
    
    /* 论坛怎么进响应式 */
    .methods-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .method-card {
        padding: 1.5rem 1rem;
    }
    .method-icon {
        width: 60px;
        height: 60px;
    }
    .method-icon i {
        font-size: 1.5rem;
    }
    .method-card h4 {
        font-size: 1.1rem;
    }
    .qr-small img {
        width: 100px;
        height: 100px;
    }
    
    .steps-timeline::before {
        left: 25px;
    }
    .timeline-item {
        padding-left: 70px;
    }
    .timeline-number {
        width: 50px;
        height: 50px;
        font-size: 1.3rem;
    }
    .timeline-content {
        padding: 1rem 1.5rem;
    }
    .timeline-content h4 {
        font-size: 1.1rem;
    }
    .timeline-content p {
        font-size: 0.95rem;
    }
    
    .entries-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    .entry-card {
        padding: 1.5rem 1rem;
    }
    .entry-icon {
        width: 55px;
        height: 55px;
    }
    .entry-icon i {
        font-size: 1.5rem;
    }
    .entry-card h4 {
        font-size: 1.05rem;
    }
    
    .notice-item {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    .notice-item > i {
        margin-top: 0;
    }
    
    .form-row {
        flex-direction: column;
    }
    
    .form-group {
        min-width: 100%;
    }
    
    .contact-content {
        flex-direction: column;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    /* 爱上海特色标签小屏样式 */
    .feature-tags-wrapper {
        gap: 0.3rem;
    }
    .feature-tag {
        font-size: 0.75rem;
        padding: 0.25rem 0.6rem;
    }
    
    /* 轮播图小屏样式 */
    .hero {
        height: 95vh;
        min-height: 550px;
        padding-top: 120px;
    }
    .carousel-content h2 {
        font-size: 1.6rem;
    }
    .carousel-content .subtitle {
        font-size: 0.9rem;
    }
    .carousel-features {
        gap: 0.5rem;
    }
    .carousel-features span {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
    }
    .carousel-content .description {
        font-size: 0.85rem;
    }
    .carousel-badge {
        font-size: 0.8rem;
        padding: 0.4rem 1rem;
    }
    
    /* 轮播指示器小屏样式 */
    .carousel-indicator {
        padding: 0.3rem 0.6rem;
    }
    .carousel-indicator span {
        font-size: 0.75rem;
    }
    
    /* 轮播统计小屏样式 */
    .stats-grid {
        gap: 0.5rem;
    }
    .stat-item {
        padding: 0.5rem;
    }
    .stat-number {
        font-size: 1.2rem;
    }
    .stat-label {
        font-size: 0.75rem;
    }
    
    /* 关于我们小屏样式 */
    .about-text h3 {
        font-size: 1.2rem;
    }
    .about-text p {
        font-size: 0.95rem;
    }
    .about-image-grid {
        grid-template-columns: 1fr;
    }
    .about-image-item img {
        height: 180px;
    }
    .about-features {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .about-feature-card {
        padding: 1.5rem 1rem;
    }
    .about-feature-icon {
        width: 70px;
        height: 70px;
    }
    .about-feature-icon i {
        font-size: 1.8rem;
    }
    .about-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
        padding: 1.5rem 1rem;
    }
    .stat-icon {
        width: 60px;
        height: 60px;
    }
    .stat-icon i {
        font-size: 1.5rem;
    }
    .stat-number {
        font-size: 1.8rem;
    }
    .stat-label {
        font-size: 0.9rem;
    }
    
    /* 论坛指南小屏样式 */
    .guide-steps {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .step-number {
        width: 35px;
        height: 35px;
        font-size: 1rem;
    }
    .step-icon {
        width: 50px;
        height: 50px;
    }
    .step-icon i {
        font-size: 1.3rem;
    }
    .guide-step h3 {
        font-size: 1.1rem;
    }
    .guide-step p {
        font-size: 0.95rem;
    }
    .step-tip {
        font-size: 0.85rem;
        padding: 0.6rem;
    }
    .guide-card {
        padding: 1.5rem 1rem;
    }
    .guide-card-icon {
        width: 70px;
        height: 70px;
    }
    .guide-card-icon i {
        font-size: 1.8rem;
    }
    .guide-card h3 {
        font-size: 1.2rem;
    }
    .guide-card p {
        font-size: 0.95rem;
    }
    .qr-code img {
        width: 100px;
        height: 100px;
    }
    .btn-lg {
        padding: 0.7rem 1.5rem;
        font-size: 1rem;
    }
    .guide-faq {
        padding: 1.5rem 1rem;
    }
    .guide-faq h3 {
        font-size: 1.3rem;
    }
    .faq-question {
        padding: 1rem;
    }
    .faq-question h4 {
        font-size: 1rem;
    }
    
    /* 平台介绍小屏样式 */
    .platform-intro {
        padding: 1.5rem 1rem;
    }
    .platform-intro h3 {
        font-size: 1.3rem;
    }
    .platform-intro p {
        font-size: 0.95rem;
    }
    .intro-highlights {
        grid-template-columns: 1fr;
        gap: 0.8rem;
    }
    .intro-highlight {
        padding: 0.8rem;
    }
    
    /* 步骤小屏样式 */
    .step-detail p {
        font-size: 0.85rem;
    }
    
    /* 卡片特性小屏样式 */
    .guide-card-features li {
        font-size: 0.9rem;
    }
    
    /* 论坛版块介绍小屏样式 */
    .forum-sections h3 {
        font-size: 1.3rem;
    }
    .sections-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .section-card {
        padding: 1.5rem 1rem;
    }
    .section-icon {
        width: 50px;
        height: 50px;
    }
    .section-icon i {
        font-size: 1.3rem;
    }
    .section-card h4 {
        font-size: 1.1rem;
    }
    .section-card p.stat-label {
        font-size: 0.9rem;
    }
    
    /* 婚恋相亲区小屏样式 */
    .dating-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }
    .member-card-img {
        height: 140px;
    }
    .member-card-content {
        padding: 0.8rem;
    }
    .member-card-content h3 {
        font-size: 0.95rem;
    }
    .member-info {
        gap: 0.3rem;
    }
    .member-info span {
        font-size: 0.75rem;
        padding: 0.15rem 0.4rem;
    }
    .member-card-content p {
        font-size: 0.8rem;
    }
    .member-card-content .btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
    
    .carousel-content p {
        font-size: 1rem;
    }
    
    .section-title h2 {
        font-size: 1.5rem;
    }
    
    .features-grid,
    .activities-grid,
    .nightlife-grid {
        grid-template-columns: 1fr;
    }
    
    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: 20px;
        right: 20px;
    }
    
    .register-form,
    .contact-form {
        padding: 1.5rem;
    }
}