:root {
    --primary-900: #0f1d30;
    --primary-800: #162540;
    --primary-700: #1e3a5f;
    --primary-600: #2d5a87;
    --primary-500: #3d6fa5;
    --primary-400: #5a8bc7;
    --primary-300: #7ea8d9;
    --primary-100: #e8f0f8;
    --primary-50: #f0f5fa;

    --slate-900: #0f172a;
    --slate-800: #1e293b;
    --slate-700: #334155;
    --slate-600: #475569;
    --slate-500: #64748b;
    --slate-400: #94a3b8;
    --slate-300: #cbd5e1;
    --slate-200: #e2e8f0;
    --slate-100: #f1f5f9;
    --slate-50: #f8fafc;

    --text-primary: #0f172a;
    --text-secondary: #334155;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --text-inverse: #ffffff;

    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #f1f5f9;
    --bg-subtle: #e2e8f0;

    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    --border-strong: #cbd5e1;

    --accent-color: #2d5a87;
    --accent-hover: #1e3a5f;
    --accent-light: #e8f0f8;
    --accent-soft: #f0f5fa;

    --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.06), 0 1px 2px -1px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 8px;
    --radius-xl: 12px;

    --transition-fast: 0.15s ease;
    --transition-base: 0.25s ease;
    --transition-slow: 0.35s ease;
}

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

body {
    font-family: "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    line-height: 1.7;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
}

ul, ol {
    list-style: none;
}

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

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 24px;
}

.clearfix::after {
    content: "";
    display: block;
    clear: both;
}

.section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 64px;
}

.section-title h2 {
    font-size: 34px;
    color: var(--text-primary);
    margin-bottom: 14px;
    font-weight: 700;
    letter-spacing: -0.5px;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -14px;
    left: 50%;
    transform: translateX(-50%);
    width: 36px;
    height: 3px;
    background: var(--primary-700);
    border-radius: 2px;
}

.section-title p {
    color: var(--text-muted);
    font-size: 15px;
    margin-top: 28px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.7;
}

.btn {
    display: inline-block;
    padding: 10px 28px;
    border: 1.5px solid var(--primary-700);
    color: var(--primary-700);
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
    cursor: pointer;
    background: transparent;
    border-radius: var(--radius-sm);
    letter-spacing: 0.3px;
}

.btn:hover {
    background: var(--primary-700);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary {
    background: var(--primary-700);
    color: #fff;
    border-color: var(--primary-700);
}

.btn-primary:hover {
    background: var(--primary-800);
    border-color: var(--primary-800);
    box-shadow: 0 4px 12px rgba(30, 58, 95, 0.25);
}

.btn-secondary {
    background: var(--slate-100);
    color: var(--text-secondary);
    border-color: var(--slate-200);
}

.btn-secondary:hover {
    background: var(--slate-200);
    color: var(--text-primary);
    border-color: var(--slate-300);
}

.btn-sm {
    padding: 7px 18px;
    font-size: 13px;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
    transition: all var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-sm);
    border-bottom-color: var(--border-color);
}

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

.logo {
    font-size: 21px;
    font-weight: 700;
    color: var(--primary-800);
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.logo span {
    color: var(--primary-600);
    font-weight: 500;
}

.nav ul {
    display: flex;
    align-items: center;
}

.nav li {
    margin-left: 40px;
}

.nav a {
    font-size: 14px;
    color: var(--text-secondary);
    padding: 26px 0;
    position: relative;
    font-weight: 500;
    transition: color var(--transition-fast);
}

.nav a:hover,
.nav a.active {
    color: var(--primary-700);
}

.nav a.active::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-700);
    border-radius: 2px 2px 0 0;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--text-primary);
    border-radius: 1px;
    transition: all 0.3s ease;
}

.nav-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.banner {
    position: relative;
    height: 600px;
    overflow: hidden;
    margin-top: 72px;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

.banner-slide.active {
    opacity: 1;
}

.banner-slide::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15, 29, 48, 0.8) 0%, rgba(22, 37, 64, 0.6) 100%);
}

.banner-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: #fff;
    max-width: 780px;
    padding: 0 24px;
}

.banner-content h2 {
    font-size: 48px;
    margin-bottom: 18px;
    font-weight: 600;
    letter-spacing: -0.5px;
    line-height: 1.25;
}

.banner-content p {
    font-size: 17px;
    margin-bottom: 32px;
    opacity: 0.85;
    line-height: 1.8;
    font-weight: 300;
}

.banner-content .btn {
    padding: 12px 36px;
    font-size: 14px;
    border-width: 1.5px solid #fff;
    color: #fff;
}

.banner-content .btn:hover {
    background: #fff;
    color: var(--primary-800);
}

.banner-dots {
    position: absolute;
    bottom: 36px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    gap: 8px;
}

.banner-dots span {
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.35);
    cursor: pointer;
    transition: all var(--transition-base);
}

.banner-dots span.active {
    background: #fff;
    width: 28px;
    border-radius: 5px;
}

.page-banner {
    height: 320px;
    background: var(--primary-800);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    text-align: center;
    margin-top: 72px;
    position: relative;
    overflow: hidden;
}

.page-banner::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/page-banner.jpg') center/cover;
    opacity: 0.1;
}

.page-banner::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500) 0%, var(--primary-700) 100%);
}

.page-banner h1 {
    position: relative;
    z-index: 2;
    font-size: 36px;
    margin-bottom: 12px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.page-banner p {
    position: relative;
    z-index: 2;
    font-size: 15px;
    opacity: 0.7;
}

.breadcrumb {
    position: relative;
    z-index: 2;
    margin-top: 20px;
    font-size: 13px;
    opacity: 0.75;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.breadcrumb a {
    color: var(--primary-300);
    transition: color var(--transition-fast);
}

.breadcrumb a:hover {
    opacity: 1;
    color: #fff;
}

.service-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
}

.service-item {
    text-align: center;
    padding: 36px 24px;
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.service-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-600);
    transform: scaleX(0);
    transition: transform var(--transition-base);
    transform-origin: left;
}

.service-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-item:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 18px;
    background: var(--primary-50);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-700);
    font-size: 22px;
    transition: all var(--transition-base);
}

.service-icon svg {
    width: 28px;
    height: 28px;
    stroke: currentColor;
}

.service-item:hover .service-icon {
    background: var(--primary-700);
    color: #fff;
    transform: scale(1.05);
}

.service-item h3 {
    font-size: 16px;
    margin-bottom: 10px;
    color: var(--text-primary);
    font-weight: 600;
}

.service-item p {
    color: var(--text-muted);
    font-size: 13px;
    line-height: 1.8;
}

.about-section {
    background: var(--bg-secondary);
}

.about-wrap {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 72px;
    align-items: center;
}

.about-img {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.about-img img {
    width: 100%;
    height: 440px;
    object-fit: cover;
    border-radius: var(--radius-lg);
}

.about-img::before {
    content: "";
    position: absolute;
    top: -24px;
    left: -24px;
    right: 48px;
    bottom: 48px;
    border: 2px solid var(--primary-300);
    border-radius: var(--radius-lg);
    z-index: -1;
    opacity: 0.4;
}

.about-text h2 {
    font-size: 32px;
    color: var(--text-primary);
    margin-bottom: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
    position: relative;
    display: inline-block;
}

.about-text h2::after {
    content: '';
    position: absolute;
    bottom: -12px;
    left: 0;
    width: 36px;
    height: 3px;
    background: var(--primary-700);
    border-radius: 2px;
}

.about-text h2 span {
    color: var(--primary-700);
}

.about-text p {
    color: var(--text-secondary);
    line-height: 2;
    margin-bottom: 16px;
    font-size: 15px;
}

.about-btn {
    margin-top: 32px;
}

.work-filter {
    text-align: center;
    margin-bottom: 48px;
}

.work-filter span {
    display: inline-block;
    padding: 8px 24px;
    margin: 0 4px;
    cursor: pointer;
    color: var(--text-muted);
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
}

.work-filter span.active,
.work-filter span:hover {
    color: var(--primary-700);
    background: var(--primary-50);
}

.work-filter span.active {
    color: #fff;
    background: var(--primary-700);
}

.work-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.work-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    transition: all var(--transition-base);
    border: 1px solid var(--border-light);
}

.work-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-xl);
    border-color: transparent;
}

.work-img {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.work-img img {
    width: 100%;
    height: 260px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.work-item:hover .work-img img {
    transform: scale(1.08);
}

.work-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(15, 29, 48, 0) 40%, rgba(15, 29, 48, 0.9) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    color: #fff;
    padding: 0 24px 28px;
    opacity: 0;
    transition: all 0.4s ease;
}

.work-item:hover .work-overlay {
    opacity: 1;
}

.work-overlay h3 {
    font-size: 18px;
    margin-bottom: 6px;
    font-weight: 600;
    text-align: center;
}

.work-overlay p {
    font-size: 13px;
    opacity: 0.8;
}

.work-overlay::after {
    content: '查看详情';
    margin-top: 14px;
    padding: 6px 20px;
    border: 1.5px solid rgba(255, 255, 255, 0.7);
    border-radius: var(--radius-sm);
    font-size: 12px;
    letter-spacing: 0.5px;
}

.work-info {
    padding: 22px 24px;
}

.work-info h3 {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 6px;
    font-weight: 600;
    line-height: 1.5;
}

.work-info span {
    color: var(--text-muted);
    font-size: 13px;
}

.news-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.news-item {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    display: flex;
    flex-direction: column;
}

.news-item:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-6px);
    border-color: transparent;
}

.news-img {
    overflow: hidden;
    position: relative;
    flex-shrink: 0;
}

.news-img img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.6s ease;
}

.news-item:hover .news-img img {
    transform: scale(1.06);
}

.news-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-date {
    color: var(--primary-600);
    font-size: 12px;
    margin-bottom: 12px;
    font-weight: 500;
    letter-spacing: 0.5px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.news-date::before {
    content: '';
    display: inline-block;
    width: 6px;
    height: 6px;
    background: var(--primary-600);
    border-radius: 50%;
}

.news-content h3 {
    font-size: 17px;
    color: var(--text-primary);
    margin-bottom: 12px;
    font-weight: 600;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-content p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.9;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: auto;
}

.news-more {
    margin-top: 20px;
    color: var(--primary-700);
    font-size: 13px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.news-more:hover {
    color: var(--primary-600);
    gap: 10px;
}

.team-list {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.team-item {
    text-align: center;
    transition: all var(--transition-base);
}

.team-photo {
    position: relative;
    overflow: hidden;
    margin-bottom: 18px;
    border-radius: var(--radius-lg);
}

.team-photo img {
    width: 100%;
    height: 310px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.team-item:hover .team-photo img {
    transform: scale(1.04);
}

.team-item h3 {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 4px;
    font-weight: 600;
}

.team-item span {
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 400;
}

.partner-section {
    background: var(--bg-secondary);
}

.partner-list {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.partner-item {
    background: var(--bg-primary);
    padding: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 104px;
    transition: all var(--transition-base);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
}

.partner-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
    border-color: var(--primary-300);
}

.partner-item img {
    max-height: 48px;
    max-width: 100%;
    opacity: 0.55;
    transition: all var(--transition-base);
    filter: grayscale(50%);
}

.partner-item:hover img {
    opacity: 1;
    filter: grayscale(0%);
    transform: scale(1.05);
}

.page-content {
    padding: 72px 0;
}

.content-wrap {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 56px;
}

.main-content {
    min-height: 500px;
}

.sidebar {
    position: sticky;
    top: 100px;
    align-self: start;
}

.side-box {
    margin-bottom: 32px;
}

.side-title {
    font-size: 17px;
    color: var(--text-primary);
    padding-bottom: 14px;
    border-bottom: 2px solid var(--primary-700);
    margin-bottom: 20px;
    font-weight: 600;
    display: inline-block;
}

.side-nav li {
    border-bottom: 1px solid var(--border-light);
}

.side-nav li:last-child {
    border-bottom: none;
}

.side-nav a {
    display: block;
    padding: 12px 0;
    color: var(--text-secondary);
    font-size: 14px;
    transition: all var(--transition-fast);
}

.side-nav a:hover,
.side-nav a.active {
    color: var(--primary-700);
    padding-left: 8px;
    font-weight: 500;
}

.side-news li {
    padding: 14px 0;
    border-bottom: 1px dashed var(--border-light);
}

.side-news li:last-child {
    border-bottom: none;
}

.side-news a {
    color: var(--text-secondary);
    font-size: 13px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.6;
    transition: color var(--transition-fast);
}

.side-news a:hover {
    color: var(--primary-700);
}

.side-news span {
    color: var(--text-light);
    font-size: 12px;
    display: block;
    margin-top: 5px;
}

.detail-title {
    text-align: center;
    padding-bottom: 26px;
    border-bottom: 1px solid var(--border-light);
    margin-bottom: 30px;
}

.detail-title h1 {
    font-size: 26px;
    color: var(--text-primary);
    margin-bottom: 16px;
    font-weight: 600;
    letter-spacing: -0.3px;
}

.detail-meta {
    color: var(--text-muted);
    font-size: 13px;
}

.detail-meta span {
    margin: 0 10px;
}

.detail-content {
    line-height: 2;
    color: var(--text-secondary);
    font-size: 15px;
}

.detail-content img {
    max-width: 100%;
    margin: 22px auto;
    border-radius: var(--radius-md);
}

.detail-content p {
    margin-bottom: 16px;
}

.list-item {
    display: flex;
    padding: 26px 0;
    border-bottom: 1px solid var(--border-light);
    transition: all var(--transition-fast);
}

.list-item:hover {
    padding-left: 6px;
}

.list-item:last-child {
    border-bottom: none;
}

.list-img {
    width: 250px;
    height: 165px;
    flex-shrink: 0;
    margin-right: 26px;
    overflow: hidden;
    border-radius: var(--radius-md);
}

.list-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.list-item:hover .list-img img {
    transform: scale(1.05);
}

.list-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.list-info h3 {
    font-size: 17px;
    color: var(--text-primary);
    margin-bottom: 8px;
    font-weight: 600;
}

.list-info h3 a:hover {
    color: var(--primary-700);
}

.list-info p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.8;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.list-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-light);
    font-size: 12px;
}

.pagination {
    text-align: center;
    margin-top: 48px;
}

.pagination a,
.pagination span {
    display: inline-block;
    padding: 8px 15px;
    margin: 0 3px;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 13px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    min-width: 36px;
    text-align: center;
}

.pagination .current {
    background: var(--primary-700);
    border-color: var(--primary-700);
    color: #fff;
}

.pagination a:hover {
    border-color: var(--primary-700);
    color: var(--primary-700);
}

.job-list .job-item {
    padding: 26px;
    border: 1px solid var(--border-light);
    margin-bottom: 18px;
    transition: all var(--transition-base);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
}

.job-list .job-item:hover {
    box-shadow: var(--shadow-lg);
    border-color: transparent;
    transform: translateX(3px);
}

.job-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
}

.job-title {
    font-size: 17px;
    color: var(--text-primary);
    font-weight: 600;
}

.job-salary {
    color: var(--primary-700);
    font-size: 19px;
    font-weight: 700;
}

.job-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 16px;
    color: var(--text-muted);
    font-size: 13px;
}

.job-meta span {
    padding: 4px 11px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--text-secondary);
}

.job-desc {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.9;
    margin-bottom: 16px;
}

.contact-wrap {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 64px;
}

.contact-info h3 {
    font-size: 26px;
    color: var(--text-primary);
    margin-bottom: 24px;
    font-weight: 700;
    letter-spacing: -0.5px;
    position: relative;
    display: inline-block;
}

.contact-info h3::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 32px;
    height: 3px;
    background: var(--primary-700);
    border-radius: 2px;
}

.contact-item {
    display: flex;
    margin-bottom: 28px;
    align-items: flex-start;
    gap: 16px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-50);
    color: var(--primary-700);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 18px;
    transition: all var(--transition-base);
}

.contact-item:hover .contact-icon {
    background: var(--primary-700);
    color: #fff;
    transform: translateY(-2px);
}

.contact-text h4 {
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 6px;
    font-weight: 600;
}

.contact-text p {
    color: var(--text-muted);
    font-size: 14px;
    line-height: 1.7;
}

.contact-qrcodes {
    margin-top: 32px;
    padding-top: 28px;
    border-top: 1px solid var(--border-light);
}

.contact-qrcodes h4 {
    font-size: 16px;
    color: var(--text-primary);
    margin-bottom: 16px;
    font-weight: 600;
}

.qrcode-list {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.qrcode-item {
    text-align: center;
    flex: 1;
    min-width: 90px;
}

.qrcode-img {
    width: 100%;
    max-width: 110px;
    aspect-ratio: 1;
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 8px;
    margin: 0 auto 10px;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-xs);
}

.qrcode-img:hover {
    border-color: var(--primary-400);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

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

.qrcode-item p {
    font-size: 12px;
    color: var(--text-muted);
    margin: 0;
}

.contact-form {
    background: var(--bg-primary);
    padding: 40px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
}

.contact-form h3 {
    font-size: 24px;
    color: var(--text-primary);
    margin-bottom: 28px;
    font-weight: 700;
    letter-spacing: -0.3px;
    text-align: center;
}

.form-group {
    margin-bottom: 22px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 11px 16px;
    border: 1px solid var(--border-color);
    font-size: 14px;
    font-family: inherit;
    transition: all var(--transition-fast);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    background: var(--bg-primary);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-600);
    box-shadow: 0 0 0 3px rgba(45, 90, 135, 0.1);
}

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

.footer {
    background: var(--slate-900);
    color: var(--slate-400);
    padding: 64px 0 0;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-col h4 {
    color: #fff;
    font-size: 15px;
    margin-bottom: 22px;
    font-weight: 600;
    position: relative;
    padding-bottom: 10px;
}

.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 28px;
    height: 2px;
    background: var(--primary-500);
    border-radius: 1px;
}

.footer-about .logo {
    color: #fff;
    font-size: 19px;
    margin-bottom: 16px;
    display: block;
}

.footer-about .logo span {
    color: var(--primary-400);
    font-weight: 500;
}

.footer-about p {
    font-size: 13px;
    line-height: 2;
    color: var(--slate-400);
    opacity: 0.9;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--slate-400);
    font-size: 13px;
    opacity: 0.85;
    transition: all var(--transition-fast);
}

.footer-links a:hover {
    color: #fff;
    opacity: 1;
    padding-left: 3px;
}

.footer-contact p {
    font-size: 13px;
    margin-bottom: 10px;
    line-height: 1.9;
    opacity: 0.85;
}

.footer-bottom {
    text-align: center;
    padding: 22px 0;
    font-size: 12px;
    opacity: 0.6;
    color: var(--slate-400);
}

.footer-bottom a {
    color: var(--slate-400);
    transition: opacity var(--transition-fast);
}

.footer-bottom a:hover {
    opacity: 1;
    color: #fff;
}

.search-box {
    position: relative;
}

.search-box input {
    width: 100%;
    padding: 9px 38px 9px 13px;
    border: 1px solid var(--border-color);
    font-size: 13px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary-600);
}

.search-box button {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 15px;
    transition: color var(--transition-fast);
}

.search-box button:hover {
    color: var(--primary-700);
}

.error-page {
    min-height: calc(100vh - 140px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 100px 0;
    background: var(--slate-50);
    position: relative;
    overflow: hidden;
}

.error-page::before {
    content: '';
    position: absolute;
    top: -300px;
    left: 50%;
    transform: translateX(-50%);
    width: 900px;
    height: 900px;
    background: radial-gradient(circle, rgba(30, 58, 95, 0.05) 0%, transparent 65%);
    pointer-events: none;
}

.error-page .container {
    width: 100%;
}

.error-content {
    text-align: center;
    max-width: 560px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.error-code {
    font-size: 140px;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 28px;
    letter-spacing: -6px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.error-digit {
    color: var(--primary-700);
    display: inline-block;
    animation: errorFloat 4s ease-in-out infinite;
}

.error-digit:nth-child(1) {
    animation-delay: 0s;
}

.error-digit:nth-child(2) {
    animation-delay: 0.3s;
}

.error-digit:nth-child(3) {
    animation-delay: 0.6s;
}

.error-zero {
    position: relative;
}

.error-zero::before {
    content: '';
    position: absolute;
    inset: 20%;
    border-radius: 50%;
    background: var(--slate-50);
}

@keyframes errorFloat {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

.error-title {
    font-size: 28px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 14px;
    letter-spacing: 0.5px;
}

.error-desc {
    font-size: 15px;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 40px;
}

.error-actions {
    display: flex;
    gap: 14px;
    justify-content: center;
    margin-bottom: 56px;
    flex-wrap: wrap;
}

.error-actions .btn {
    min-width: 136px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 11px 28px;
    font-size: 14px;
}

.error-search {
    margin-bottom: 52px;
}

.error-search-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-bottom: 14px;
    display: block;
    letter-spacing: 0.3px;
}

.search-form {
    display: flex;
    max-width: 440px;
    margin: 0 auto;
    background: #fff;
    border: 1.5px solid var(--slate-200);
    border-radius: 8px;
    overflow: hidden;
    transition: all var(--transition-fast);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04);
}

.search-form:focus-within {
    border-color: var(--primary-500);
    box-shadow: 0 0 0 4px rgba(61, 111, 165, 0.08), 0 2px 8px rgba(0, 0, 0, 0.06);
}

.search-form input {
    flex: 1;
    padding: 13px 18px;
    border: none;
    outline: none;
    font-size: 14px;
    color: var(--text-primary);
    background: transparent;
}

.search-form input::placeholder {
    color: var(--slate-400);
}

.search-btn {
    width: 52px;
    border: none;
    background: var(--primary-700);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition-fast);
    flex-shrink: 0;
}

.search-btn:hover {
    background: var(--primary-800);
}

.error-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
}

.error-divider::before,
.error-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--slate-200);
}

.error-divider span {
    font-size: 12px;
    color: var(--slate-400);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 500;
    white-space: nowrap;
}

.error-links {
    text-align: center;
}

.error-links h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.quick-links {
    display: flex;
    gap: 6px;
    justify-content: center;
    flex-wrap: wrap;
}

.quick-links a {
    padding: 9px 22px;
    font-size: 13px;
    color: var(--text-secondary);
    background: #fff;
    border: 1px solid var(--slate-200);
    border-radius: 6px;
    transition: all var(--transition-fast);
    text-decoration: none;
    font-weight: 400;
}

.quick-links a:hover {
    color: var(--primary-700);
    border-color: var(--primary-400);
    background: var(--primary-50);
    transform: translateY(-1px);
    box-shadow: 0 2px 6px rgba(30, 58, 95, 0.08);
}

.form-success {
    text-align: center;
    padding: 50px 40px;
    background: #fff;
    border: 1px solid var(--slate-200);
    border-radius: 8px;
}

.success-icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    background: #ecfdf5;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #10b981;
    animation: successPop 0.5s ease-out;
}

@keyframes successPop {
    0% {
        transform: scale(0.5);
        opacity: 0;
    }
    60% {
        transform: scale(1.1);
    }
    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.form-success h4 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.form-success p {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.8;
    margin: 0;
}

.success-tip {
    margin-top: 18px !important;
    font-size: 13px !important;
    color: var(--text-muted) !important;
}

.success-tip span {
    color: var(--primary-600);
    font-weight: 600;
    font-size: 16px;
    margin: 0 2px;
}

.license-wrap {
    max-width: 800px;
    margin: 0 auto;
}

.license-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: 40px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-sm);
}

.license-title {
    font-size: 24px;
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 28px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--primary-700);
    display: inline-block;
    letter-spacing: -0.3px;
}

.license-image-wrapper {
    text-align: center;
    margin-bottom: 32px;
    position: relative;
}

.license-image-link {
    display: inline-block;
    cursor: zoom-in;
    transition: transform var(--transition-base);
}

.license-image-link:hover {
    transform: scale(1.02);
}

.license-image {
    max-width: 100%;
    max-height: 500px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
    object-fit: contain;
    background: var(--bg-secondary);
}

.license-hint {
    margin-top: 12px;
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.license-hint::before {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    background: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cline x1='2' y1='12' x2='22' y2='12'/%3E%3Cpath d='m12 2 3 6-6 3 6 3-3 6'/%3E%3C/svg%3E") center/cover;
}

.license-info {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: 24px;
}

.license-row {
    display: flex;
    padding: 12px 0;
    border-bottom: 1px dashed var(--border-light);
}

.license-row:last-child {
    border-bottom: none;
}

.license-label {
    width: 160px;
    flex-shrink: 0;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 14px;
}

.license-value {
    flex: 1;
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.6;
}

.license-declaration {
    background: var(--primary-50);
    border-radius: var(--radius-md);
    padding: 28px 32px;
    border-left: 4px solid var(--primary-700);
}

.license-declaration h3 {
    font-size: 16px;
    color: var(--primary-800);
    font-weight: 600;
    margin-bottom: 16px;
}

.license-declaration p {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.8;
    margin-bottom: 10px;
}

.license-declaration p:last-child {
    margin-bottom: 0;
}

.license-declaration a {
    color: var(--primary-700);
    font-weight: 500;
    text-decoration: underline;
}

.license-declaration a:hover {
    color: var(--primary-600);
}

.declaration-date {
    color: var(--text-muted) !important;
    font-size: 13px !important;
    margin-top: 16px !important;
    padding-top: 16px;
    border-top: 1px dashed var(--primary-200);
}

.lightbox-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
}

.lightbox-overlay.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90vh;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.lightbox-overlay.active .lightbox-content {
    transform: scale(1);
}

.lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
    border-radius: var(--radius-md);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    object-fit: contain;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.15);
    color: #fff;
    font-size: 24px;
    font-weight: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-top: 1px solid var(--border-light);
        border-bottom: 1px solid var(--border-light);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
        z-index: 100;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.35s ease;
    }

    .nav.active {
        max-height: 500px;
    }

    .nav ul {
        flex-direction: column;
        align-items: stretch;
        padding: 12px 0;
    }

    .nav li {
        margin-left: 0;
    }

    .nav a {
        display: block;
        padding: 18px 28px;
        font-size: 16px;
        line-height: 1.5;
        border-bottom: 1px solid var(--border-light);
        font-weight: 500;
    }

    .nav li:last-child a {
        border-bottom: none;
    }

    .nav a.active::after {
        display: none;
    }

    .nav a.active {
        background: var(--primary-50);
        color: var(--primary-700);
        font-weight: 600;
    }

    .nav-toggle {
        display: flex;
    }
    
    .banner {
        height: 360px;
    }
    
    .banner-content h2 {
        font-size: 26px;
    }
    
    .banner-content p {
        font-size: 14px;
    }
    
    .service-list,
    .work-list,
    .news-list,
    .team-list,
    .partner-list {
        grid-template-columns: 1fr;
    }
    
    .about-wrap,
    .content-wrap,
    .contact-wrap {
        grid-template-columns: 1fr;
    }
    
    .footer-top {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .list-item {
        flex-direction: column;
    }
    
    .list-img {
        width: 100%;
        margin-right: 0;
        margin-bottom: 14px;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: 56px 0;
    }

    .section-title {
        margin-bottom: 44px;
    }

    .section-title h2 {
        font-size: 26px;
    }

    .section-title p {
        font-size: 14px;
        margin-top: 22px;
    }

    .page-banner {
        height: 240px;
    }

    .page-banner h1 {
        font-size: 28px;
    }

    .page-banner p {
        font-size: 14px;
    }

    .about-wrap {
        gap: 40px;
    }

    .about-text h2 {
        font-size: 26px;
    }

    .about-img img {
        height: 280px;
    }

    .work-img img {
        height: 220px;
    }

    .news-img img {
        height: 180px;
    }

    .news-content {
        padding: 20px;
    }

    .partner-item {
        height: 80px;
        padding: 16px;
    }

    .partner-item img {
        max-height: 36px;
    }

    .contact-form {
        padding: 28px 20px;
    }

    .contact-info h3 {
        font-size: 22px;
    }

    .contact-wrap {
        gap: 40px;
    }

    .page-content {
        padding: 48px 0;
    }

    .content-wrap {
        gap: 32px;
    }

    .about-img::before {
        display: none;
    }

    .error-page {
        padding: 60px 0;
        min-height: calc(100vh - 120px);
    }

    .error-code {
        font-size: 88px;
        letter-spacing: -3px;
        margin-bottom: 24px;
    }

    .error-title {
        font-size: 22px;
    }

    .error-desc {
        font-size: 14px;
        margin-bottom: 32px;
        line-height: 1.8;
    }

    .error-actions {
        margin-bottom: 40px;
        gap: 10px;
    }

    .error-actions .btn {
        min-width: 120px;
        padding: 10px 22px;
        font-size: 13px;
    }

    .error-divider {
        margin-bottom: 22px;
        gap: 12px;
    }

    .error-divider span {
        font-size: 11px;
        letter-spacing: 1.5px;
    }

    .error-search {
        margin-bottom: 40px;
    }

    .search-form input {
        padding: 12px 16px;
        font-size: 13px;
    }

    .search-btn {
        width: 46px;
    }

    .error-links {
        text-align: center;
    }

    .quick-links {
        gap: 6px;
    }

    .quick-links a {
        padding: 8px 16px;
        font-size: 12px;
    }

    .form-success {
        padding: 36px 24px;
    }

    .success-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 16px;
    }

    .form-success h4 {
        font-size: 18px;
    }

    .license-card {
        padding: 24px 20px;
    }

    .license-title {
        font-size: 20px;
        margin-bottom: 20px;
        padding-bottom: 12px;
    }

    .license-image-wrapper {
        margin-bottom: 24px;
    }

    .license-image {
        max-height: 400px;
    }

    .license-hint {
        font-size: 12px;
    }

    .license-info {
        padding: 18px;
    }

    .license-row {
        flex-direction: column;
        gap: 4px;
        padding: 10px 0;
    }

    .license-label {
        width: 100%;
        color: var(--text-muted);
        font-size: 13px;
        font-weight: 500;
    }

    .license-value {
        font-size: 13px;
    }

    .license-declaration {
        padding: 20px;
    }

    .license-declaration h3 {
        font-size: 15px;
        margin-bottom: 12px;
    }

    .license-declaration p {
        font-size: 13px;
        line-height: 1.7;
    }

    .declaration-date {
        font-size: 12px !important;
        margin-top: 12px !important;
        padding-top: 12px;
    }
}