/* 新盛公司官网 - 维度分层风格样式 */
:root {
    --bg: #F5F5F5;
    --surface: #FFFFFF;
    --layer-line: #E0E0E0;
    --ink: #17181C;
    --ink-soft: #4A4D57;
    --accent: #2563EB;
    --accent-deep: #1D4ED8;
    --elevation-1: 0 1px 3px rgba(0,0,0,.1);
    --elevation-2: 0 4px 6px rgba(0,0,0,.1);
    --elevation-3: 0 10px 20px rgba(0,0,0,.1);
    --elevation-4: 0 20px 40px rgba(0,0,0,.15);
    --radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--ink);
    background-color: var(--bg);
    -webkit-font-smoothing: antialiased;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* 顶部导航 */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--surface);
    box-shadow: var(--elevation-2);
    backdrop-filter: blur(10px);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--ink);
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--accent), var(--accent-deep));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--elevation-2);
}

.logo-text {
    font-size: 18px;
    font-weight: 700;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    text-decoration: none;
    color: var(--ink-soft);
    font-weight: 500;
    font-size: 15px;
    transition: var(--transition);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

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

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--accent);
    color: white;
    text-decoration: none;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 14px;
    box-shadow: var(--elevation-2);
    transition: var(--transition);
}

.nav-cta:hover {
    background: var(--accent-deep);
    transform: translateY(-2px);
    box-shadow: var(--elevation-3);
}

/* 移动端菜单按钮 */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--ink);
    margin: 6px 0;
    transition: var(--transition);
}

/* Hero 区域 */
.hero {
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-eyebrow {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--accent);
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 24px;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--ink);
}

.hero-subtitle {
    font-size: 18px;
    color: var(--ink-soft);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius);
    font-weight: 600;
    font-size: 15px;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    min-height: 48px;
}

.btn-primary {
    background: var(--accent);
    color: white;
    box-shadow: var(--elevation-2);
}

.btn-primary:hover {
    background: var(--accent-deep);
    transform: translateY(-2px);
    box-shadow: var(--elevation-3);
}

.btn-secondary {
    background: var(--surface);
    color: var(--ink);
    border: 2px solid var(--layer-line);
}

.btn-secondary:hover {
    border-color: var(--accent);
    color: var(--accent);
    transform: translateY(-2px);
}

.btn-ghost {
    background: transparent;
    color: var(--accent);
}

.btn-ghost:hover {
    background: rgba(37, 99, 235, 0.1);
}

/* 章节标题 */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 56px;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--ink);
}

.section-subtitle {
    font-size: 16px;
    color: var(--ink-soft);
    max-width: 600px;
    margin: 0 auto;
}

/* 卡片样式 */
.card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--elevation-1);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--accent-deep));
    transform: scaleX(0);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--elevation-3);
}

.card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(29, 78, 216, 0.1));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
}

.card-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--accent);
}

.card-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--ink);
}

.card-text {
    font-size: 15px;
    color: var(--ink-soft);
    line-height: 1.6;
}

/* 网格布局 */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

/* 团队成员卡片 */
.team-card {
    text-align: center;
}

.team-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent), var(--accent-deep));
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    font-weight: 700;
    color: white;
    box-shadow: var(--elevation-2);
}

.team-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
}

.team-role {
    font-size: 14px;
    color: var(--ink-soft);
    margin-bottom: 16px;
}

.team-bio {
    font-size: 14px;
    color: var(--ink-soft);
    line-height: 1.6;
}

/* 表单样式 */
.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--ink);
}

.form-input,
.form-textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--layer-line);
    border-radius: var(--radius);
    font-size: 15px;
    font-family: inherit;
    transition: var(--transition);
    background: var(--surface);
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

/* 联系信息 */
.contact-info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}

.contact-item {
    text-align: center;
    padding: 32px 24px;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--elevation-1);
    transition: var(--transition);
}

.contact-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--elevation-2);
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(29, 78, 216, 0.1));
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--accent);
}

.contact-label {
    font-size: 14px;
    color: var(--ink-soft);
    margin-bottom: 8px;
}

.contact-value {
    font-size: 16px;
    font-weight: 600;
    color: var(--ink);
}

.contact-value a {
    color: var(--ink);
    text-decoration: none;
    transition: var(--transition);
}

.contact-value a:hover {
    color: var(--accent);
}

/* 地图容器 */
.map-container {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--elevation-2);
    margin-top: 48px;
}

.map-container iframe {
    width: 100%;
    height: 400px;
    border: none;
}

/* 页脚 */
.footer {
    background: var(--ink);
    color: white;
    padding: 48px 0 24px;
    margin-top: 80px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 32px;
}

.footer-brand {
    max-width: 300px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    color: white;
    text-decoration: none;
}

.footer-logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--accent), var(--accent-deep));
    border-radius: var(--radius);
}

.footer-logo-text {
    font-size: 16px;
    font-weight: 700;
}

.footer-desc {
    font-size: 14px;
    color: rgba(255,255,255,0.7);
    line-height: 1.6;
}

.footer-title {
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: rgba(255,255,255,0.7);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid rgba(255,255,255,0.1);
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.5);
}

/* 响应式 */
@media (max-width: 968px) {
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-info {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--surface);
        flex-direction: column;
        padding: 24px;
        box-shadow: var(--elevation-3);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-cta {
        display: none;
    }
    
    .hero {
        padding: 48px 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .section {
        padding: 48px 0;
    }
    
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }
    
    .contact-info {
        grid-template-columns: 1fr;
    }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out forwards;
}

/* 减弱动效 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* 面包屑导航 */
.breadcrumb {
    padding: 16px 0;
    background: var(--surface);
    border-bottom: 1px solid var(--layer-line);
}

.breadcrumb-list {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    font-size: 14px;
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.breadcrumb-item a {
    color: var(--ink-soft);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb-item a:hover {
    color: var(--accent);
}

.breadcrumb-item.active {
    color: var(--ink);
    font-weight: 500;
}

.breadcrumb-separator {
    color: var(--layer-line);
}

/* 新闻/文章卡片 */
.news-card {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    padding: 24px;
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--elevation-1);
    transition: var(--transition);
    margin-bottom: 16px;
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--elevation-2);
}

.news-card .news-thumb {
    width: 100%;
    height: 180px;
    flex-basis: 100%;
}

.news-date {
    flex-shrink: 0;
    width: 80px;
    text-align: center;
    padding: 12px;
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(29, 78, 216, 0.1));
    border-radius: var(--radius);
}

.news-day {
    font-size: 28px;
    font-weight: 800;
    color: var(--accent);
    line-height: 1;
}

.news-month {
    font-size: 13px;
    color: var(--ink-soft);
    margin-top: 4px;
}

.news-content {
    flex: 1;
}

.news-title {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--ink);
}

.news-title a {
    color: var(--ink);
    text-decoration: none;
    transition: var(--transition);
}

.news-title a:hover {
    color: var(--accent);
}

.news-excerpt {
    font-size: 14px;
    color: var(--ink-soft);
    line-height: 1.6;
    margin-bottom: 12px;
}

.news-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--ink-soft);
}

.news-tag {
    padding: 4px 12px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--accent);
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

@media (max-width: 768px) {
    .news-card {
        flex-direction: column;
    }
    
    .news-date {
        width: 100%;
        display: flex;
        justify-content: center;
        gap: 8px;
        align-items: baseline;
    }
}

/* 随机图片样式 */
.random-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--radius);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.random-img-loaded {
    opacity: 1;
}

.hero-img {
    width: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: var(--elevation-3);
    margin-top: 40px;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.about-img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: var(--radius);
    box-shadow: var(--elevation-2);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.team-avatar-img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 20px;
    display: block;
    box-shadow: var(--elevation-2);
    opacity: 0;
    transition: opacity 0.5s ease;
}

.news-thumb {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: 16px;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.service-img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius);
    margin-bottom: 16px;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.card-img-wrapper {
    width: 100%;
    height: 200px;
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 16px;
    box-shadow: var(--elevation-1);
}

.card-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.5s ease;
}

@media (max-width: 768px) {
    .hero-img {
        max-height: 250px;
    }
    .about-img {
        height: 200px;
    }
}