/* ========================================
   海南智集科技有限公司 - 官网样式
   ======================================== */

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

:root {
    --primary: #0066ff;
    --primary-dark: #0044cc;
    --primary-light: #3d8bff;
    --accent: #00d4ff;
    --accent-2: #6c5ce7;
    --dark: #0a1530;
    --dark-2: #1a2547;
    --gray: #6b7280;
    --gray-light: #f5f7fa;
    --white: #ffffff;
    --text: #2d3748;
    --gradient: linear-gradient(135deg, #0066ff 0%, #00d4ff 100%);
    --gradient-2: linear-gradient(135deg, #6c5ce7 0%, #0066ff 100%);
    --gradient-dark: linear-gradient(135deg, #0a1530 0%, #1a2547 100%);
    --shadow-sm: 0 2px 8px rgba(0, 102, 255, 0.08);
    --shadow-md: 0 8px 30px rgba(0, 102, 255, 0.12);
    --shadow-lg: 0 20px 60px rgba(10, 21, 48, 0.15);
    --radius: 16px;
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
    color: var(--text);
    background: var(--white);
    line-height: 1.7;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
}

/* -------- 通用按钮 -------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 36px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient);
    color: var(--white);
    box-shadow: 0 10px 30px rgba(0, 102, 255, 0.35);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 102, 255, 0.5);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.5);
}

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

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

.btn-dark:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

/* -------- 通用标题 -------- */
.section {
    padding: 120px 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 70px;
}

.section-tag {
    display: inline-block;
    padding: 6px 20px;
    background: rgba(0, 102, 255, 0.1);
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.section-title {
    font-size: 2.6rem;
    font-weight: 800;
    color: var(--dark);
    line-height: 1.3;
    margin-bottom: 20px;
}

.section-title span {
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--gray);
    line-height: 1.8;
}

/* ========================================
   导航栏
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.08);
    padding: 15px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--white);
    transition: var(--transition);
}

.navbar.scrolled .logo {
    color: var(--dark);
}

.logo-icon {
    width: 44px;
    height: 44px;
    background: var(--gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 800;
    font-size: 1.2rem;
    box-shadow: 0 5px 15px rgba(0, 102, 255, 0.4);
}

.logo-text small {
    display: block;
    font-size: 0.7rem;
    font-weight: 400;
    opacity: 0.8;
    letter-spacing: 1px;
}

.nav-menu {
    display: flex;
    gap: 8px;
    align-items: center;
}

.nav-menu a {
    padding: 10px 18px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    border-radius: 8px;
    position: relative;
}

.navbar.scrolled .nav-menu a {
    color: var(--text);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--white);
    background: rgba(0, 102, 255, 0.3);
}

.navbar.scrolled .nav-menu a:hover,
.navbar.scrolled .nav-menu a.active {
    color: var(--primary);
    background: rgba(0, 102, 255, 0.08);
}

.nav-cta {
    background: var(--gradient);
    color: var(--white) !important;
    padding: 12px 28px !important;
    border-radius: 50px !important;
    box-shadow: 0 5px 20px rgba(0, 102, 255, 0.4);
}

.nav-cta:hover {
    transform: translateY(-2px);
    background: var(--gradient) !important;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    width: 26px;
    height: 3px;
    background: var(--white);
    border-radius: 3px;
    transition: var(--transition);
}

.navbar.scrolled .menu-toggle span {
    background: var(--dark);
}

/* ========================================
   Hero 首屏
   ======================================== */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    padding: 140px 0 80px;
    overflow: hidden;
    background: var(--gradient-dark);
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 30%, rgba(0, 102, 255, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(0, 212, 255, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(108, 92, 231, 0.2) 0%, transparent 60%);
    z-index: 0;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.25;
    z-index: 0;
}

.hero-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent);
    border-radius: 50%;
    opacity: 0.6;
    animation: floatParticle 15s infinite linear;
}

@keyframes floatParticle {
    0% { transform: translateY(100vh) translateX(0); opacity: 0; }
    10% { opacity: 0.6; }
    90% { opacity: 0.6; }
    100% { transform: translateY(-100px) translateX(50px); opacity: 0; }
}

.hero .container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content {
    color: var(--white);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50px;
    font-size: 0.9rem;
    margin-bottom: 28px;
}

.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: #00ff88;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.7); }
    50% { box-shadow: 0 0 0 8px rgba(0, 255, 136, 0); }
}

.hero h1 {
    font-size: 4rem;
    font-weight: 900;
    line-height: 1.15;
    margin-bottom: 24px;
    letter-spacing: -1px;
}

.hero h1 .highlight {
    background: linear-gradient(135deg, #00d4ff 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.hero p {
    font-size: 1.2rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.9;
    margin-bottom: 36px;
    max-width: 560px;
}

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

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-stat strong {
    display: block;
    font-size: 2.4rem;
    font-weight: 800;
    background: linear-gradient(135deg, #00d4ff 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-stat span {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
}

/* Hero 视觉图 */
.hero-visual {
    position: relative;
}

.hero-image-main {
    width: 100%;
    aspect-ratio: 4/3;
    border-radius: 24px;
    object-fit: cover;
    box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.hero-floating-card {
    position: absolute;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    border-radius: 16px;
    padding: 18px 22px;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 14px;
    animation: floatY 4s ease-in-out infinite;
}

.hero-floating-card.card-1 {
    top: 30px;
    left: -30px;
    animation-delay: 0s;
}

.hero-floating-card.card-2 {
    bottom: 40px;
    right: -30px;
    animation-delay: 2s;
}

@keyframes floatY {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.floating-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.floating-card-text strong {
    display: block;
    color: var(--dark);
    font-size: 1.1rem;
}

.floating-card-text span {
    color: var(--gray);
    font-size: 0.85rem;
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
    text-align: center;
    animation: bounce 2s infinite;
}

.hero-scroll::after {
    content: '';
    display: block;
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.5);
    margin: 8px auto 0;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-10px); }
}

/* ========================================
   信任栏 - 客户Logo
   ======================================== */
.trust-bar {
    padding: 60px 0;
    background: var(--gray-light);
}

.trust-bar .container {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 50px;
    align-items: center;
}

.trust-text {
    font-size: 1rem;
    color: var(--gray);
    font-weight: 600;
    white-space: nowrap;
}

.trust-logos {
    display: flex;
    flex-wrap: wrap;
    gap: 30px 50px;
    align-items: center;
    justify-content: space-around;
}

.trust-logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: #b0b8c5;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.trust-logo:hover {
    color: var(--primary);
}

/* ========================================
   关于我们
   ======================================== */
.about {
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
}

.about-images {
    position: relative;
}

.about-img-main {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
}

.about-img-sub {
    position: absolute;
    bottom: -40px;
    right: -30px;
    width: 55%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: 20px;
    border: 8px solid var(--white);
    box-shadow: var(--shadow-lg);
}

.about-experience {
    position: absolute;
    top: -30px;
    left: -30px;
    background: var(--gradient);
    color: var(--white);
    padding: 24px 28px;
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0, 102, 255, 0.4);
    text-align: center;
}

.about-experience strong {
    display: block;
    font-size: 2.4rem;
    font-weight: 900;
    line-height: 1;
}

.about-experience span {
    font-size: 0.85rem;
    opacity: 0.9;
}

.about-content .section-tag {
    margin-bottom: 18px;
}

.about-content h2 {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--dark);
    line-height: 1.3;
    margin-bottom: 24px;
}

.about-content > p {
    color: var(--gray);
    line-height: 1.9;
    margin-bottom: 28px;
    font-size: 1.05rem;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 32px 0;
}

.about-feature {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.about-feature-icon {
    width: 44px;
    height: 44px;
    min-width: 44px;
    background: rgba(0, 102, 255, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.about-feature-text strong {
    display: block;
    color: var(--dark);
    font-size: 1rem;
    margin-bottom: 4px;
}

.about-feature-text span {
    color: var(--gray);
    font-size: 0.9rem;
}

/* ========================================
   数据统计
   ======================================== */
.stats {
    background: var(--gradient-dark);
    color: var(--white);
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.stats::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 10% 50%, rgba(0, 102, 255, 0.3) 0%, transparent 50%),
        radial-gradient(circle at 90% 50%, rgba(0, 212, 255, 0.2) 0%, transparent 50%);
}

.stats .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    padding: 30px 20px;
    border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item:last-child {
    border-right: none;
}

.stat-item .stat-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.stat-item .stat-num {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1;
    background: linear-gradient(135deg, #00d4ff 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-item .stat-label {
    margin-top: 12px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 1rem;
}

/* ========================================
   核心业务
   ======================================== */
.services {
    background: var(--gray-light);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    position: relative;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.service-card-img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    transition: var(--transition);
}

.service-card:hover .service-card-img {
    transform: scale(1.05);
}

.service-card-img-wrap {
    overflow: hidden;
    position: relative;
}

.service-card-img-wrap::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, transparent 50%, rgba(0, 102, 255, 0.4) 100%);
}

.service-card-body {
    padding: 32px 28px;
}

.service-card-body .service-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--white);
    margin-top: -60px;
    position: relative;
    box-shadow: 0 10px 25px rgba(0, 102, 255, 0.35);
    margin-bottom: 20px;
}

.service-card-body h3 {
    font-size: 1.35rem;
    color: var(--dark);
    margin-bottom: 12px;
    font-weight: 700;
}

.service-card-body p {
    color: var(--gray);
    line-height: 1.8;
    margin-bottom: 18px;
}

.service-card-link {
    color: var(--primary);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.service-card-link:hover {
    gap: 12px;
}

/* ========================================
   解决方案
   ======================================== */
.solutions {
    background: var(--white);
}

.solution-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 70px;
    align-items: center;
    margin-bottom: 120px;
}

.solution-item:last-child {
    margin-bottom: 0;
}

.solution-images {
    position: relative;
}

.solution-images.grid-3 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    grid-template-rows: repeat(2, 1fr);
    gap: 16px;
    aspect-ratio: 1;
}

.solution-images.grid-3 img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 16px;
}

.solution-images.grid-3 img:first-child {
    grid-row: span 2;
}

.solution-images.single img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
}

.solution-images.single img:nth-child(2) {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 45%;
    aspect-ratio: 1;
    border: 6px solid var(--white);
}

.solution-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(0, 102, 255, 0.1);
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 18px;
}

.solution-content h3 {
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 20px;
    line-height: 1.3;
}

.solution-content > p {
    color: var(--gray);
    font-size: 1.05rem;
    line-height: 1.9;
    margin-bottom: 28px;
}

.solution-list {
    display: grid;
    gap: 16px;
    margin-bottom: 32px;
}

.solution-list li {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    color: var(--text);
    line-height: 1.7;
}

.solution-list li i {
    color: var(--primary);
    font-size: 1.2rem;
    margin-top: 3px;
}

.solution-list li strong {
    color: var(--dark);
    display: block;
    margin-bottom: 2px;
}

.solution-list li span {
    color: var(--gray);
    font-size: 0.95rem;
}

/* ========================================
   案例展示
   ======================================== */
.cases {
    background: var(--gray-light);
}

.cases-filter {
    display: flex;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 50px;
}

.filter-btn {
    padding: 10px 24px;
    background: var(--white);
    border: 2px solid transparent;
    border-radius: 50px;
    font-weight: 600;
    color: var(--text);
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

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

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.case-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
}

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

.case-img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
    transition: var(--transition);
}

.case-card:hover .case-img {
    transform: scale(1.05);
}

.case-img-wrap {
    overflow: hidden;
    position: relative;
}

.case-category {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 5px 14px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    z-index: 2;
}

.case-body {
    padding: 24px;
}

.case-body h3 {
    font-size: 1.2rem;
    color: var(--dark);
    margin-bottom: 8px;
    font-weight: 700;
}

.case-body p {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 16px;
}

.case-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.case-tags span {
    padding: 4px 12px;
    background: var(--gray-light);
    color: var(--gray);
    border-radius: 50px;
    font-size: 0.8rem;
}

/* ========================================
   新闻动态
   ======================================== */
.news {
    background: var(--white);
}

.news-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 30px;
}

.news-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid #f0f0f0;
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.news-card.featured {
    grid-row: span 2;
}

.news-img-wrap {
    overflow: hidden;
    position: relative;
}

.news-img {
    width: 100%;
    aspect-ratio: 16/10;
    object-fit: cover;
    transition: var(--transition);
}

.news-card.featured .news-img {
    aspect-ratio: 16/9;
}

.news-card:hover .news-img {
    transform: scale(1.05);
}

.news-date {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--white);
    padding: 8px 14px;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.news-date strong {
    display: block;
    color: var(--primary);
    font-size: 1.4rem;
    font-weight: 800;
    line-height: 1;
}

.news-date span {
    font-size: 0.75rem;
    color: var(--gray);
}

.news-body {
    padding: 24px;
}

.news-card.featured .news-body {
    padding: 30px;
}

.news-category {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 102, 255, 0.1);
    color: var(--primary);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.news-body h3 {
    font-size: 1.15rem;
    color: var(--dark);
    margin-bottom: 10px;
    font-weight: 700;
    line-height: 1.5;
    transition: var(--transition);
}

.news-card.featured .news-body h3 {
    font-size: 1.5rem;
}

.news-card:hover .news-body h3 {
    color: var(--primary);
}

.news-body p {
    color: var(--gray);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 16px;
}

.news-meta {
    display: flex;
    gap: 16px;
    font-size: 0.85rem;
    color: var(--gray);
    align-items: center;
}

.news-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

/* ========================================
   合作伙伴
   ======================================== */
.partners {
    background: var(--white);
    padding: 100px 0;
}

.partners-marquee {
    overflow: hidden;
    position: relative;
    padding: 30px 0;
}

.partners-marquee::before,
.partners-marquee::after {
    content: '';
    position: absolute;
    top: 0;
    width: 150px;
    height: 100%;
    z-index: 2;
}

.partners-marquee::before {
    left: 0;
    background: linear-gradient(90deg, var(--white), transparent);
}

.partners-marquee::after {
    right: 0;
    background: linear-gradient(270deg, var(--white), transparent);
}

.partners-track {
    display: flex;
    gap: 60px;
    animation: scrollPartners 30s linear infinite;
    width: max-content;
}

@keyframes scrollPartners {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

.partner-logo {
    width: 180px;
    height: 80px;
    background: var(--gray-light);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--gray);
    transition: var(--transition);
    flex-shrink: 0;
    border: 2px solid transparent;
}

.partner-logo:hover {
    color: var(--primary);
    border-color: var(--primary);
    background: var(--white);
    box-shadow: var(--shadow-sm);
}

/* ========================================
   联系我们
   ======================================== */
.contact {
    background: var(--gray-light);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 50px;
}

.contact-info-card {
    background: var(--gradient-dark);
    color: var(--white);
    border-radius: var(--radius);
    padding: 50px 40px;
    position: relative;
    overflow: hidden;
}

.contact-info-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at 70% 30%, rgba(0, 212, 255, 0.2) 0%, transparent 60%);
}

.contact-info-card > * {
    position: relative;
    z-index: 1;
}

.contact-info-card h3 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 16px;
}

.contact-info-card > p {
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    line-height: 1.8;
}

.contact-info-item {
    display: flex;
    gap: 18px;
    margin-bottom: 28px;
    align-items: flex-start;
}

.contact-info-icon {
    width: 50px;
    height: 50px;
    min-width: 50px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.contact-info-text small {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.contact-info-text strong {
    font-size: 1.1rem;
    font-weight: 600;
}

.contact-socials {
    display: flex;
    gap: 12px;
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.contact-socials a {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.contact-socials a:hover {
    background: var(--white);
    color: var(--primary);
}

.contact-form-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 50px 40px;
    box-shadow: var(--shadow-md);
}

.contact-form-card h3 {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 10px;
}

.contact-form-card > p {
    color: var(--gray);
    margin-bottom: 36px;
}

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

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

.form-group label {
    display: block;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e8ecf2;
    border-radius: 12px;
    font-family: inherit;
    font-size: 1rem;
    color: var(--text);
    transition: var(--transition);
    background: var(--gray-light);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--white);
    box-shadow: 0 0 0 4px rgba(0, 102, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 130px;
}

/* ========================================
   页脚
   ======================================== */
.footer {
    background: var(--dark);
    color: rgba(255, 255, 255, 0.7);
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 50px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    color: var(--white);
    margin-bottom: 20px;
}

.footer-brand p {
    line-height: 1.8;
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.footer-cert {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.footer-cert span {
    padding: 6px 14px;
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 8px;
    font-size: 0.8rem;
}

.footer-col h4 {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 24px;
}

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

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.footer-col ul li a:hover {
    color: var(--accent);
    padding-left: 6px;
}

.footer-newsletter p {
    margin-bottom: 16px;
    line-height: 1.7;
}

.newsletter-form {
    display: flex;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50px;
    padding: 4px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.newsletter-form input {
    flex: 1;
    background: transparent;
    border: none;
    padding: 12px 18px;
    color: var(--white);
    font-family: inherit;
}

.newsletter-form input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

.newsletter-form input:focus {
    outline: none;
}

.newsletter-form button {
    background: var(--gradient);
    border: none;
    color: var(--white);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.1rem;
}

.footer-qr {
    display: flex;
    gap: 16px;
    margin-top: 24px;
}

.qr-item {
    text-align: center;
}

.qr-item .qr-box {
    width: 90px;
    height: 90px;
    background: var(--white);
    border-radius: 10px;
    padding: 8px;
    margin-bottom: 8px;
}

.qr-item span {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 24px 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.9rem;
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-bottom a:hover {
    color: var(--accent);
}

.footer-links {
    display: flex;
    gap: 24px;
}

/* ========================================
   返回顶部
   ======================================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    box-shadow: 0 10px 25px rgba(0, 102, 255, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px rgba(0, 102, 255, 0.5);
}

/* ========================================
   滚动渐显动画
   ======================================== */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ========================================
   响应式
   ======================================== */
@media (max-width: 1024px) {
    .hero .container,
    .about-grid,
    .solution-item,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 50px;
    }

    .hero h1 { font-size: 3rem; }
    .section-title { font-size: 2.1rem; }

    .services-grid,
    .cases-grid,
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .news-card.featured {
        grid-row: auto;
    }

    .stats .container {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-item:nth-child(2) { border-right: none; }
    .stat-item { border-bottom: 1px solid rgba(255,255,255,0.1); padding-bottom: 40px; }

    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .menu-toggle { display: flex; }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        padding: 100px 30px 30px;
        gap: 8px;
        align-items: stretch;
        box-shadow: -10px 0 40px rgba(0,0,0,0.15);
        transition: right 0.4s ease;
    }

    .nav-menu.active { right: 0; }

    .nav-menu a {
        color: var(--text);
        padding: 14px 18px;
        border-radius: 10px;
    }

    .nav-menu a:hover,
    .nav-menu a.active {
        background: var(--gray-light);
        color: var(--primary);
    }

    .hero { padding: 120px 0 60px; min-height: auto; }
    .hero h1 { font-size: 2.2rem; }
    .hero p { font-size: 1rem; }
    .hero-stats { gap: 24px; }
    .hero-stat strong { font-size: 1.7rem; }
    .hero-floating-card { display: none; }

    .section { padding: 70px 0; }
    .section-title { font-size: 1.7rem; }
    .section-header { margin-bottom: 40px; }

    .trust-bar .container { grid-template-columns: 1fr; gap: 24px; }
    .trust-text { text-align: center; }

    .about-experience { display: none; }
    .about-img-sub { position: relative; bottom: auto; right: auto; margin-top: 16px; width: 100%; }
    .about-features { grid-template-columns: 1fr; }

    .stats .container,
    .services-grid,
    .cases-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }

    .solution-images.grid-3 { aspect-ratio: auto; grid-template-rows: auto; }

    .form-row { grid-template-columns: 1fr; }
    .contact-info-card,
    .contact-form-card { padding: 30px 24px; }

    .footer-grid { grid-template-columns: 1fr; gap: 36px; }
    .footer-bottom { flex-direction: column; text-align: center; }

    .back-to-top { bottom: 20px; right: 20px; }
}

/* 在线客服悬浮 */
.chat-widget {
    position: fixed;
    bottom: 30px;
    left: 30px;
    z-index: 999;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
}

.chat-btn {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    color: var(--white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
    box-shadow: 0 10px 30px rgba(0, 102, 255, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.chat-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 15px 40px rgba(0, 102, 255, 0.55);
}

@media (max-width: 768px) {
    .chat-widget { display: none; }
}