/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2d6a4f;
    --secondary-color: #95d5b2;
    --accent-color: #d8f3dc;
    --text-color: #2d5a27;
    --light-bg: #f9f9f9;
    --white: #ffffff;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Microsoft YaHei', 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--light-bg);
}

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

/* 导航栏 */
.navbar {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}

.logo i {
    font-size: 28px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

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

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

.btn-chat {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white) !important;
    border: none;
    padding: 10px 22px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    animation: pulse-ai 2s ease-in-out infinite;
}

@keyframes pulse-ai {
    0%, 100% { box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3); }
    50% { box-shadow: 0 4px 25px rgba(102, 126, 234, 0.5); }
}

.btn-chat i {
    font-size: 16px;
}

.btn-chat:hover {
    background: linear-gradient(135deg, #764ba2 0%, #667eea 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

/* 首页横幅 */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: var(--white);
    padding: 120px 0 80px;
    margin-top: 70px;
}

.hero .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 80vh;  /* 让首页横幅占据大部分视口高度 */
    padding: 120px 20px 80px;  /* 顶部留出导航栏空间 */
}

.hero-content {
    max-width: 800px;  /* 限制内容宽度，提高可读性 */
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.subtitle {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn {
    padding: 12px 30px;
    border-radius: 25px;
    text-decoration: none;
    
    transition: all 0.3s;
    display: inline-block;
}

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

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

.btn-secondary {
    background-color: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background-color: var(--white);
    color: var(--primary-color);
}

.hero-image {
    flex: 1;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* AI健康顾问入口区域 */
.ai-entry {
    padding: 60px 0;
    background: linear-gradient(135deg, #2d5a27 0%, #4a8f4c 50%, #2d5a27 100%);
    position: relative;
    overflow: hidden;
}

.ai-entry::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: rgba(255,255,255,0.05);
    border-radius: 50%;
}

.ai-entry-content {
    display: flex;
    align-items: center;
    gap: 50px;
    position: relative;
    z-index: 1;
}

.ai-entry-icon {
    flex-shrink: 0;
    width: 150px;
    height: 150px;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse-green 2s infinite;
}

.ai-entry-icon i {
    font-size: 70px;
    color: #fff;
}

@keyframes pulse-green {
    0%, 100% { box-shadow: 0 0 0 0 rgba(255,255,255,0.4); }
    50% { box-shadow: 0 0 0 20px rgba(255,255,255,0); }
}

.ai-entry-text {
    flex: 1;
    color: #fff;
}

.ai-entry-text h2 {
    font-size: 36px;
    margin-bottom: 15px;
    color: #fff;
}

.ai-entry-text p {
    font-size: 18px;
    margin-bottom: 20px;
    opacity: 0.95;
    line-height: 1.6;
}

.ai-entry-features {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-bottom: 25px;
}

.ai-entry-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 16px;
}

.ai-entry-features i {
    color: #a8e6a3;
}

.btn-ai {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff !important;
    padding: 12px 25px;
    border-radius: 25px;
    font-weight: bold;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-ai:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.btn-ai-large {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    padding: 15px 40px;
    border-radius: 30px;
    font-size: 18px;
    font-weight: bold;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: all 0.3s;
}

.btn-ai-large:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.5);
    color: #fff;
}

/* AI悬浮聊天按钮 */
.ai-float-btn {
    position: fixed;
    bottom: 100px;
    right: 25px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
    cursor: pointer;
    z-index: 999;
    transition: all 0.3s;
    text-decoration: none;
    animation: bounce-soft 2s infinite;
}

.ai-float-btn i {
    font-size: 22px;
}

.ai-float-btn span {
    font-size: 10px;
    font-weight: bold;
}

.ai-float-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.5);
    color: #fff;
}

@keyframes bounce-soft {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

/* 响应式 */
@media (max-width: 768px) {
    .ai-entry-content {
        flex-direction: column;
        text-align: center;
    }
    
    .ai-entry-icon {
        width: 120px;
        height: 120px;
    }
    
    .ai-entry-icon i {
        font-size: 50px;
    }
    
    .ai-entry-features {
        grid-template-columns: 1fr;
    }
    
    .ai-float-btn {
        bottom: 80px;
        right: 20px;
        width: 55px;
        height: 55px;
    }
}

/* ============================================
   微信风格AI聊天窗口
   ============================================ */
.ai-float-btn {
    position: relative;
}
.ai-badge {
    position: absolute;
    top: -2px;
    right: -2px;
    background: #ff4757;
    color: #fff;
    font-size: 10px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    animation: badgePulse 2s infinite;
}
@keyframes badgePulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

/* 聊天窗口容器 */
.ai-chat-window {
    position: fixed;
    z-index: 10000;
    bottom: 90px;
    right: 25px;
    width: 380px;
    height: 560px;
    background: #f0f7f0;
    border-radius: 24px;
    box-shadow: 0 12px 48px rgba(46,90,39,0.25);
    display: none;
    flex-direction: column;
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    animation: chatSlideUp 0.3s ease;
}
.ai-chat-window.active {
    display: flex;
}
@keyframes chatSlideUp {
    from { opacity: 0; transform: translateY(20px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

/* 头部 */
.ai-chat-header {
    background: linear-gradient(135deg, #2d5a27 0%, #4a8f4c 100%);
    color: #fff;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: move;
    user-select: none;
    flex-shrink: 0;
    border-radius: 24px 24px 0 0;
}
.ai-chat-header-left {
    display: flex;
    align-items: center;
    gap: 10px;
}
.ai-avatar {
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    flex-shrink: 0;
}
.ai-chat-header-info {
    display: flex;
    flex-direction: column;
}
.ai-chat-title {
    font-size: 15px;
    font-weight: 600;
}
.ai-chat-status {
    font-size: 11px;
    opacity: 0.85;
    display: flex;
    align-items: center;
    gap: 4px;
}
.online-dot {
    width: 6px;
    height: 6px;
    background: #4cd964;
    border-radius: 50%;
    display: inline-block;
}
.ai-chat-header-right {
    display: flex;
    align-items: center;
    gap: 8px;
}
.ai-chat-clear,
.ai-chat-close {
    background: none;
    border: none;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    padding: 6px 8px;
    border-radius: 6px;
    transition: background 0.2s;
    opacity: 0.85;
}
.ai-chat-clear:hover,
.ai-chat-close:hover {
    background: rgba(255,255,255,0.2);
    opacity: 1;
}

/* 聊天区域 */
.ai-chat-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    scroll-behavior: smooth;
}
.ai-chat-body::-webkit-scrollbar {
    width: 4px;
}
.ai-chat-body::-webkit-scrollbar-thumb {
    background: #ccc;
    border-radius: 2px;
}

/* 欢迎区域 */
.ai-welcome {
    text-align: center;
    padding: 20px 10px;
}
.ai-welcome-avatar {
    font-size: 48px;
    margin-bottom: 12px;
}
.ai-welcome-text {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 16px;
}
.ai-quick-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
}
.ai-quick-tags span {
    background: #fff;
    border: 2px solid #a5d6a7;
    padding: 6px 14px;
    border-radius: 24px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.2s;
    color: #2d5a27;
}
.ai-quick-tags span:hover {
    background: #2d5a27;
    color: #fff;
    border-color: #2d5a27;
}

/* 消息气泡 */
.ai-msg {
    display: flex;
    gap: 8px;
    max-width: 85%;
    animation: msgFadeIn 0.3s ease;
}
@keyframes msgFadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}
.ai-msg.user {
    align-self: flex-end;
    flex-direction: row-reverse;
}
.ai-msg-bubble {
    padding: 10px 14px;
    border-radius: 18px;
    font-size: 14px;
    line-height: 1.5;
    word-break: break-word;
    position: relative;
}
.ai-msg.bot .ai-msg-bubble {
    background: #fff;
    color: #2d5a27;
    border-radius: 20px 20px 20px 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}
.ai-msg.user .ai-msg-bubble {
    background: linear-gradient(135deg, #2d5a27 0%, #4a8f4c 100%);
    color: #fff;
    border-radius: 20px 20px 6px 20px;
}
.ai-msg-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
    background: #e8f5e9;
}
.ai-msg.user .ai-msg-avatar {
    background: #e3f2fd;
}

/* 正在输入 */
.ai-typing {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    background: #fff;
    border-radius: 18px;
    border-radius: 20px 20px 20px 6px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
    align-self: flex-start;
}
.ai-typing span {
    width: 7px;
    height: 7px;
    background: #bbb;
    border-radius: 50%;
    animation: typingBounce 1.4s infinite;
}
.ai-typing span:nth-child(2) { animation-delay: 0.2s; }
.ai-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); }
    30% { transform: translateY(-6px); }
}

/* 底部输入区 */
.ai-chat-footer {
    background: #e8f5e9;
    padding: 10px 12px;
    border-top: 1px solid #c8e6c9;
    flex-shrink: 0;
}
.ai-input-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: #fff;
    border-radius: 24px;
    padding: 6px 10px;
    border: 2px solid #a5d6a7;
}
.ai-input-row textarea {
    flex: 1;
    border: none;
    outline: none;
    resize: none;
    font-size: 14px;
    line-height: 1.4;
    max-height: 80px;
    padding: 4px 0;
    font-family: inherit;
    background: transparent;
}
.ai-input-btn {
    background: none;
    border: none;
    color: #666;
    font-size: 18px;
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    flex-shrink: 0;
}
.ai-input-btn:hover {
    background: #e8f5e9;
    color: #2d5a27;
}
.ai-send-btn {
    background: linear-gradient(135deg, #2d5a27 0%, #4a8f4c 100%) !important;
    color: #fff !important;
    width: 36px !important;
    height: 36px !important;
    border-radius: 50% !important;
    font-size: 14px !important;
}
.ai-send-btn:hover {
    transform: scale(1.08);
    box-shadow: 0 2px 8px rgba(45,90,39,0.3) !important;
}

/* 产品中心 */
.products {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.section-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 50px;
}

.product-grid {
    display: flex;
    flex-direction: row;
    gap: 20px;
    overflow-x: auto;
    scroll-behavior: smooth;
    padding: 20px 0;
    /* 隐藏滚动条但保持滑动功能 */
    -ms-overflow-style: none;  /* IE/Edge */
    scrollbar-width: none;  /* Firefox */
}

/* Chrome/Safari 隐藏滚动条 */
.product-grid::-webkit-scrollbar {
    display: none;
}

.product-card {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
    flex-shrink: 0;  /* 防止卡片被压缩 */
    width: 88vw;          /* 手机默认自适应：88% 屏幕宽 */
    max-width: 360px;     /* 超过 360px 不再加宽，避免 PC 端太宽 */
}

@media (min-width: 768px) {
    .product-card { width: 340px; }
}
@media (min-width: 1024px) {
    .product-card { width: 360px; }
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.product-info {
    padding: 20px;
}

.product-info h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.product-info p {
    color: #666;
    margin-bottom: 15px;
    white-space: pre-line;       /* 保留换行符 */
    line-height: 1.9;            /* 多行间距舒适 */
    font-size: 14px;
}

/* 产品描述中的【标签】高亮（纯文本样式，无背景色） */
.product-info .product-tag {
    color: var(--primary-color);
    font-weight: 600;
    margin-right: 4px;
    white-space: nowrap;
}

.product-price {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.price {
    font-size: 24px;
    font-weight: bold;
    color: #e74c3c;
}

.btn-buy {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 8px 20px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.btn-buy:hover {
    background-color: #1e4d3a;
}

/* 关于我们 */
.about {
    padding: 80px 0;
    background-color: var(--white);
}

.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
    margin-top: 30px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 10px;
}

.feature i {
    color: var(--primary-color);
    font-size: 20px;
}

.about-image {
    flex: 1;
    text-align: center;
}

.about-image img {
    max-width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

/* 联系我们 */
.contact {
    padding: 80px 0;
}

.contact-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 50px;
    margin-top: 50px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.info-item {
    text-align: center;
    padding: 30px;
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.info-item i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.info-item h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.contact-form form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.contact-form input,
.contact-form textarea {
    padding: 15px;
    border: 2px solid #a5d6a7;
    border-radius: 5px;
    font-size: 16px;
    font-family: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.contact-form .btn {
    border: none;
    cursor: pointer;
    font-size: 16px;
}

/* 页脚 */
.footer {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 40px 0;
    text-align: center;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: bold;
}

.footer-logo i {
    font-size: 28px;
}

/* AI对话窗口 */
.ai-chat {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 350px;
    height: 500px;
    background-color: var(--white);
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.2);
    display: none;
    flex-direction: column;
    z-index: 1001;
    overflow: hidden;
}

.ai-chat.active {
    display: flex;
}

.chat-iframe-container {
    flex: 1;
    width: 100%;
    overflow: hidden;
}

.chat-iframe-container iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.chat-header {
    background: linear-gradient(135deg, var(--primary-color), #40916c);
    color: var(--white);
    padding: 12px 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 15px 15px 0 0;
}

.chat-header h3 {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 600;
}

.chat-header h3::after {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    background-color: #4ade80;
    border-radius: 50%;
    animation: online-pulse 1.5s ease-in-out infinite;
}

@keyframes online-pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.7); }
    50% { opacity: 0.8; box-shadow: 0 0 0 4px rgba(74, 222, 128, 0.3); }
}

.btn-close {
    background: none;
    border: none;
    color: var(--white);
    font-size: 20px;
    cursor: pointer;
}





















/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 20px;
    left: 20px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 20px;
    display: none;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow);
    transition: background-color 0.3s;
    z-index: 999;
}

.back-to-top:hover {
    background-color: #1e4d3a;
}

.back-to-top.visible {
    display: flex;
}

/* 医法箐卫 AI */
.yifa {
    padding: 80px 0;
    background-color: var(--white);
}

.yifa-content {
    display: flex;
    align-items: center;
    gap: 50px;
    margin-top: 50px;
}

.yifa-text {
    flex: 1;
}

.yifa-text h3 {
    font-size: 28px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.yifa-text p {
    margin-bottom: 15px;
    line-height: 1.8;
    color: var(--text-color);
}

.yifa-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 25px;
    margin: 30px 0;
}

.yifa-feature {
    display: flex;
    gap: 15px;
    padding: 20px;
    background-color: var(--light-bg);
    border-radius: 10px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.yifa-feature:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
}

.yifa-feature-link {
    text-decoration: none;
    display: block;
}

.yifa-feature-link:hover .yifa-feature {
    transform: translateY(-5px);
    box-shadow: var(--shadow);
    background-color: var(--accent-color);
}

.yifa-feature i {
    font-size: 30px;
    color: var(--primary-color);
    margin-top: 5px;
}

.yifa-feature h4 {
    font-size: 18px;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.yifa-feature p {
    font-size: 14px;
    color: #666;
    margin-bottom: 0;
}

.yifa-cta {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.yifa-image {
    flex: 1;
    text-align: center;
}

.yifa-image img {
    max-width: 100%;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }

    .hero h1 {
        font-size: 32px;
    }

    .hero-buttons {
        justify-content: center;
    }

    .about-content {
        flex-direction: column;
    }

    .nav-links {
        display: none;
    }

    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: auto;
        right: 5px;
        transform: perspective(400px) rotateX(-1deg);
        width: 160px;
        background-color: rgba(255, 255, 255, 0.85);
        padding: 3px 5px 5px 5px;
        box-shadow: 0 4px 12px rgba(0,0,0,0.12);
        border-radius: 8px;
        gap: 2px;
        animation: slideDown 0.25s ease-out;
    }

    @keyframes slideDown {
        from {
            opacity: 0;
            transform: perspective(500px) rotateX(-10deg);
        }
        to {
            opacity: 1;
            transform: perspective(500px) rotateX(-2deg);
        }
    }

    .nav-links.active li a {
        padding: 6px 10px;
        font-size: 17px;
        color: var(--text-color);
        border-radius: 6px;
        transition: background-color 0.3s;
        text-align: center;
    }

    .nav-links.active li a:hover {
        background-color: var(--accent-color);
        color: var(--primary-color);
    }

    .ai-chat {
        width: 100%;
        height: 100%;
        bottom: 0;
        right: 0;
        border-radius: 0;
    }

    /* 医法菁卫 AI - 移动端响应式 */
    .yifa-content {
        flex-direction: column !important;
        gap: 30px;
        padding: 0 15px;
    }

    .yifa-text {
        order: 1;
        width: 100%;
    }

    .yifa-text h3 {
        font-size: 22px;
        margin-bottom: 15px;
    }

    .yifa-features {
        display: flex !important;
        flex-direction: column !important;
        gap: 12px;
        margin: 20px 0;
    }

    .yifa-feature {
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        text-align: center !important;
        padding: 18px 15px;
        gap: 8px;
    }

    .yifa-feature i {
        font-size: 32px;
        margin-bottom: 5px;
    }

    .yifa-feature h4 {
        font-size: 16px;
        margin-bottom: 6px;
    }

    .yifa-feature p {
        font-size: 13px;
        line-height: 1.5;
    }

    .yifa-cta {
        flex-direction: column;
        gap: 10px;
    }

    .yifa-cta .btn {
        width: 100%;
        text-align: center;
    }

    .yifa-image {
        order: 2;
        width: 100%;
    }

    /* 联系我们 - 移动端优化 */
    .contact {
        padding: 40px 0;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 0 15px;
    }

    .contact-form {
        margin-bottom: 30px;
    }

    .info-item {
        padding: 20px;
    }

    .info-item i {
        font-size: 28px;
        margin-bottom: 10px;
    }

    .info-item h3 {
        font-size: 17px;
        margin-bottom: 8px;
    }

    .info-item p {
        font-size: 14px;
        line-height: 1.5;
        word-break: break-all;
    }

    .info-item p a,
    .info-item a {
        text-decoration: none !important;
        color: inherit;
    }

    .info-item p a:hover,
    .info-item a:hover {
        text-decoration: underline;
        opacity: 0.8;
    }

    .phone-link,
    .address-link {
        font-size: 14px;
        text-decoration: none;
        color: inherit;
    }

    .phone-link:hover,
    .address-link:hover {
        text-decoration: none;
        opacity: 0.8;
    }
}


/* 右下角浮动 Logo */
.floating-logo {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 80px;
    height: 80px;
    z-index: 999;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    overflow: hidden;
    background-color: white;
    padding: 5px;
    transition: transform 0.3s ease;
}

.floating-logo:hover {
    transform: scale(1.1);
}

.floating-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* 移动端适配 */
@media (max-width: 768px) {
    .floating-logo {
        width: 60px;
        height: 60px;
        bottom: 15px;
        right: 15px;
    }
}