/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #3466F6;
    --primary-dark: #2851D8;
    --secondary-color: #16D3A9;
    --dark-color: #111827;
    --gray-color: #64748B;
    --light-gray: #E2E8F0;
    --bg-color: #F8FAFC;
    --white-color: #FFFFFF;
    --gradient-primary: linear-gradient(135deg, #3466F6 0%, #5D7DF9 100%);
    --gradient-secondary: linear-gradient(135deg, #16D3A9 0%, #3DF6CD 100%);
    --gradient-text: linear-gradient(90deg, #3466F6 0%, #16D3A9 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--dark-color);
    background-color: var(--bg-color);
    line-height: 1.6;
}

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

ul {
    list-style: none;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* 常用按钮样式 */
.btn-primary {
    display: inline-block;
    background: var(--gradient-primary);
    color: var(--white-color);
    padding: 12px 24px;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(52, 102, 246, 0.15);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(52, 102, 246, 0.25);
}

.btn-secondary {
    display: inline-block;
    background-color: rgba(52, 102, 246, 0.1);
    color: var(--primary-color);
    padding: 12px 24px;
    text-align: center;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn-secondary:hover {
    background-color: rgba(52, 102, 246, 0.15);
}

.btn-outline {
    display: inline-block;
    background-color: transparent;
    color: var(--primary-color);
    padding: 10px 20px;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid var(--primary-color);
    cursor: pointer;
}

.btn-outline:hover {
    background-color: rgba(52, 102, 246, 0.05);
}

/* 导航栏 */
header {
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    z-index: 100;
    box-shadow: var(--shadow-sm);
    padding: 16px 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: 700;
}

.highlight {
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    font-weight: 500;
    transition: var(--transition);
}

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

/* Hero区域 */
.hero {
    padding: 80px 0;
    background: radial-gradient(circle at 10% 90%, rgba(52, 102, 246, 0.08) 0%, rgba(22, 211, 169, 0.08) 50%, transparent 100%);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 48px;
}

.hero-text h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 20px;
    font-weight: 700;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-left: 8px;
}

.subtitle {
    font-size: 18px;
    color: var(--gray-color);
    margin-bottom: 32px;
    max-width: 480px;
}

.hero-btns {
    display: flex;
    gap: 16px;
}

.hero-img-container {
    position: relative;
    padding-bottom: 20px;
}

.hero-img-container::before {
    content: '';
    position: absolute;
    width: 80%;
    height: 80%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(52, 102, 246, 0.1) 0%, rgba(22, 211, 169, 0.05) 100%);
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    z-index: -1;
    filter: blur(40px);
}

/* 数字指标 */
.stats {
    padding: 40px 0;
    background-color: var(--white-color);
    box-shadow: var(--shadow-sm);
}

.stats .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 32px;
    text-align: center;
}

.stat-item h3 {
    font-size: 36px;
    font-weight: 700;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 8px;
}

.stat-item p {
    color: var(--gray-color);
    font-weight: 500;
}

/* 核心特点 */
.features {
    padding: 80px 0;
}

.section-title {
    font-size: 36px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 48px;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.feature-card {
    background-color: var(--white-color);
    box-shadow: var(--shadow-sm);
    border-radius: var(--radius-md);
    padding: 32px;
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.feature-icon {
    background: rgba(52, 102, 246, 0.1);
    width: 80px;
    height: 80px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
}

.feature-icon img {
    width: 40px;
    height: 40px;
}

.feature-card h3 {
    font-size: 20px;
    margin-bottom: 16px;
}

.feature-card p {
    color: var(--gray-color);
}

/* 群组展示 */
.groups {
    padding: 80px 0;
    background-color: var(--white-color);
}

.group-filters {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    justify-content: center;
    margin-bottom: 32px;
}

.filter-btn {
    padding: 8px 16px;
    border: 1px solid var(--light-gray);
    border-radius: 50px;
    background: none;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.filter-btn:hover, .filter-btn.active {
    background-color: var(--primary-color);
    color: var(--white-color);
    border-color: var(--primary-color);
}

.group-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    margin-bottom: 40px;
}

.group-card {
    height: 390px;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    background-color: var(--white-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.group-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.group-header {
    position: relative;
    height: 160px;
}

.group-header img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.group-tag {
    position: absolute;
    top: 12px;
    right: 12px;
    background: rgba(255, 255, 255, 0.9);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    color: var(--primary-color);
}

.group-content {
    padding: 24px;
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
}

.group-content h3 {
    margin-bottom: 8px;
    font-size: 18px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.group-content p {
    color: var(--gray-color);
    margin-bottom: 16px;
    font-size: 14px;
    flex: 1 1 auto;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    min-height: 54px;
    max-height: 54px;
}

.group-meta {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
    font-size: 13px;
    color: var(--gray-color);
}

.center-btn {
    text-align: center;
    margin-top: 32px;
}

/* AI名片区域 */
.profiles {
    padding: 80px 0;
    background: radial-gradient(circle at 90% 10%, rgba(52, 102, 246, 0.08) 0%, rgba(22, 211, 169, 0.08) 50%, transparent 100%);
}

.section-desc {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 40px;
    color: var(--gray-color);
}

.profiles-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 32px;
    margin-bottom: 48px;
}

.profile-card {
    background-color: var(--white-color);
    border-radius: var(--radius-md);
    display: flex;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.profile-card:hover {
    box-shadow: var(--shadow-md);
}

.profile-image {
    width: 30%;
    min-width: 100px;
}

.profile-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.profile-info {
    padding: 24px;
    width: 70%;
}

.profile-info h3 {
    margin-bottom: 4px;
    font-size: 20px;
}

.profile-title {
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 12px;
}

.profile-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
}

.profile-tags span {
    background-color: rgba(52, 102, 246, 0.1);
    color: var(--primary-color);
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 50px;
    font-weight: 500;
}

.profile-desc {
    color: var(--gray-color);
    font-size: 14px;
    margin-bottom: 16px;
}

.profile-connect {
    display: flex;
    justify-content: flex-end;
}

.profile-cta {
    background: var(--gradient-primary);
    border-radius: var(--radius-md);
    padding: 40px;
    text-align: center;
    color: var(--white-color);
}

.profile-cta h3 {
    font-size: 24px;
    margin-bottom: 16px;
}

.profile-cta p {
    margin-bottom: 24px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.profile-cta .btn-primary {
    background: var(--white-color);
    color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

/* 资源匹配平台 */
.resources {
    padding: 80px 0;
    background-color: var(--white-color);
}

.resources-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    margin-bottom: 60px;
}

.resource-info h3 {
    font-size: 28px;
    margin-bottom: 16px;
}

.resource-info p {
    color: var(--gray-color);
    margin-bottom: 24px;
}

.resource-list {
    margin-bottom: 32px;
}

.resource-list li {
    display: flex;
    margin-bottom: 16px;
}

.resource-list li span {
    background-color: rgba(52, 102, 246, 0.1);
    color: var(--primary-color);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-right: 12px;
    white-space: nowrap;
}

.success-stories h3 {
    text-align: center;
    font-size: 24px;
    margin-bottom: 32px;
}

.story-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
}

.story-card {
    background-color: var(--bg-color);
    padding: 32px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.story-card p {
    font-style: italic;
    margin-bottom: 20px;
}

.story-author {
    display: flex;
    align-items: center;
}

.story-author img {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    margin-right: 16px;
}

.story-author .name {
    font-weight: 600;
    display: block;
    line-height: 1.4;
}

.story-author .company {
    font-size: 14px;
    color: var(--gray-color);
}

.story-avatar {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    display: block;
    margin: 0 auto 18px auto;
    box-shadow: 0 2px 12px rgba(52,102,246,0.13);
    border: 2.5px solid #fff;
    background: #f8fafc;
}

/* 加入我们区域 */
.contact {
    padding: 80px 0;
    background: radial-gradient(circle at 10% 90%, rgba(52, 102, 246, 0.08) 0%, rgba(22, 211, 169, 0.08) 50%, transparent 100%);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: flex-start;
}

.contact-info h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.contact-info p {
    color: var(--gray-color);
    margin-bottom: 32px;
    max-width: 480px;
}

.contact-methods {
    display: grid;
    gap: 24px;
}

.contact-method {
    display: flex;
    align-items: center;
}

.contact-method img {
    width: 48px;
    height: 48px;
    padding: 12px;
    background-color: rgba(52, 102, 246, 0.1);
    border-radius: var(--radius-sm);
    margin-right: 16px;
}

.contact-method h4 {
    margin-bottom: 4px;
}

.contact-method p {
    margin-bottom: 0;
    font-size: 14px;
}

.contact-form {
    background-color: var(--white-color);
    padding: 32px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.contact-form h3 {
    margin-bottom: 24px;
    font-size: 24px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--light-gray);
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 16px;
}

.form-group textarea {
    height: 120px;
    resize: none;
}

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

.contact-advantages {
    margin: 32px 0 0 0;
    padding: 0 0 0 18px;
    color: #3466F6;
    font-size: 17px;
    line-height: 2.1;
    list-style: disc;
}

.contact-advantages li {
    margin-bottom: 4px;
    font-weight: 500;
    letter-spacing: 0.2px;
}

.contact-qrcodes {
    display: flex;
    flex-direction: row;
    gap: 32px;
    justify-content: center;
    align-items: flex-start;
}

.qrcode-block {
    background: #fff;
    border-radius: 20px;
    box-shadow: 0 4px 24px rgba(52,102,246,0.08);
    padding: 28px 24px 18px 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 210px;
    max-width: 260px;
}

.qrcode-block h4 {
    font-size: 1.15rem;
    font-weight: 700;
    color: #2851D8;
    margin-bottom: 16px;
    letter-spacing: 0.5px;
}

.qrcode-img {
    width: 160px;
    height: 160px;
    border-radius: 18px;
    object-fit: cover;
    margin-bottom: 14px;
    box-shadow: 0 2px 12px rgba(52,102,246,0.13);
    border: 2.5px solid #f8fafc;
    background: #f8fafc;
}

.qrcode-tip {
    color: #16D3A9;
    font-size: 15px;
    text-align: center;
    margin-bottom: 0;
    margin-top: 2px;
}

/* 页脚 */
footer {
    background-color: var(--dark-color);
    color: var(--white-color);
    padding: 36px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-logo {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-logo p {
    font-size: 14px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 12px;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.footer-links-group h4 {
    font-size: 16px;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.9);
}

.footer-links-group ul li {
    margin-bottom: 12px;
}

.footer-links-group ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    transition: var(--transition);
}

.footer-links-group ul li a:hover {
    color: var(--white-color);
}

.footer-bottom {
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: 0;
    border-top: none;
    min-height: 40px;
}

.icp-link {
    color: rgba(255,255,255,0.7);
    font-size: 15px;
    text-decoration: none;
    transition: color 0.2s;
    letter-spacing: 0.5px;
    padding: 0 8px;
}
.icp-link:hover {
    color: #16D3A9;
    text-decoration: underline;
}
@media (max-width: 700px) {
    .footer-bottom {
        font-size: 13px;
        padding: 12px 0;
    }
    .icp-link {
        font-size: 13px;
        padding: 0 2px;
    }
}

/* 响应式设计 */
@media (max-width: 992px) {
    .hero-content,
    .resources-grid,
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-text h1 {
        font-size: 40px;
    }
    
    .subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-btns {
        justify-content: center;
    }
    
    .resource-image {
        order: -1;
        margin-bottom: 32px;
    }
    .contact-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .contact-qrcodes {
        flex-direction: row;
        gap: 18px;
    }
    .qrcode-block {
        min-width: 0;
        max-width: 100%;
        padding: 20px 8vw 12px 8vw;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .section-title {
        font-size: 32px;
    }
    
    .profiles-container {
        grid-template-columns: 1fr;
    }
    
    .story-cards {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
    .contact-qrcodes {
        flex-direction: column;
        gap: 18px;
        align-items: center;
    }
    .qrcode-img {
        width: 120px;
        height: 120px;
    }
    .qrcode-block {
        padding: 16px 4vw 10px 4vw;
    }
}

@media (max-width: 576px) {
    .hero-text h1 {
        font-size: 32px;
    }
    
    .subtitle {
        font-size: 16px;
    }
    
    .stat-item h3 {
        font-size: 28px;
    }
    
    .profile-card {
        flex-direction: column;
    }
    
    .profile-image {
        width: 100%;
        height: 200px;
    }
    
    .profile-info {
        width: 100%;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
    }
}

/* 通用二维码弹窗样式 */
.qr-modal {
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.qr-modal-backdrop {
  position: absolute;
  left: 0; top: 0; right: 0; bottom: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0,0,0,0.45);
  z-index: 1;
}
.qr-modal-content {
  position: relative;
  z-index: 2;
  background: #fff;
  border-radius: 32px;
  box-shadow: 0 12px 48px rgba(52,102,246,0.18), 0 2px 8px rgba(0,0,0,0.08);
  padding: 48px 56px 36px 56px;
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 400px;
  max-width: 96vw;
  border: 4px solid transparent;
  background-clip: padding-box, border-box;
  background-origin: padding-box, border-box;
  background-image: linear-gradient(#fff, #fff), linear-gradient(135deg, #3466F6 0%, #16D3A9 100%);
  animation: qr-pop 0.3s cubic-bezier(.68,-0.55,.27,1.55);
  gap: 0.5rem;
}
.qr-modal-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: #3466F6;
  margin-bottom: 0.5rem;
  letter-spacing: 1px;
  text-align: center;
  margin-top: 0.5rem;
}
.qr-modal-subtitle {
  font-size: 1.15rem;
  color: #64748B;
  margin-bottom: 1.5rem;
  margin-top: 0.2rem;
  text-align: center;
  line-height: 1.7;
}
.qr-modal-img {
  width: 320px;
  height: 320px;
  object-fit: contain;
  border-radius: 24px;
  margin-bottom: 18px;
  border: 2.5px solid #e2e8f0;
  box-shadow: 0 4px 24px rgba(52,102,246,0.10);
  background: #f8fafc;
  transition: box-shadow 0.2s;
}
.qr-modal-img:hover {
  box-shadow: 0 8px 32px rgba(52,102,246,0.18);
}
.qr-modal-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-bottom: 10px;
  width: 100%;
  gap: 16px;
}
.qr-modal-download {
  font-size: 1.1rem;
  padding: 12px 32px;
  border-radius: 32px;
  background: var(--gradient-primary);
  color: #fff;
  border: none;
  font-weight: 700;
  box-shadow: 0 2px 8px rgba(52,102,246,0.10);
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
  display: flex;
  align-items: center;
  gap: 6px;
}
.qr-modal-download:hover {
  background: var(--gradient-secondary);
  box-shadow: 0 4px 16px rgba(22,211,169,0.13);
  transform: translateY(-2px) scale(1.04);
}
.qr-modal-tip {
  color: #16D3A9;
  font-size: 18px;
  margin-bottom: 0;
  text-align: center;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-top: 10px;
}
.qr-modal-close {
  position: absolute;
  top: 18px;
  right: 28px;
  font-size: 36px;
  color: #b0b8c9;
  cursor: pointer;
  transition: color 0.2s, transform 0.2s;
  z-index: 3;
}
.qr-modal-close:hover {
  color: #3466F6;
  transform: scale(1.15);
}
@media (max-width: 700px) {
  .qr-modal-content {
    min-width: 0;
    padding: 20px 4vw 16px 4vw;
  }
  .qr-modal-img {
    width: 180px;
    height: 180px;
  }
  .qr-modal-title {
    font-size: 1.3rem;
  }
  .qr-modal-download {
    font-size: 1rem;
    padding: 10px 18px;
  }
}