/* 智云科技 - 企业官网样式表 */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #0ea5e9;
    --accent: #f43f5e;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --gray-900: #111827;
    --gray-800: #1f2937;
    --gray-700: #374151;
    --gray-600: #4b5563;
    --gray-500: #6b7280;
    --gray-400: #9ca3af;
    --gray-300: #d1d5db;
    --gray-200: #e5e7eb;
    --white: #ffffff;
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #d946ef 100%);
    --gradient-secondary: linear-gradient(135deg, #0ea5e9 0%, #6366f1 100%);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    --transition: 0.3s ease;
    --border-radius: 12px;
    --border-radius-lg: 20px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: var(--dark);
    color: var(--gray-300);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

button {
    cursor: pointer;
    border: none;
    outline: none;
    font-family: inherit;
}

input,
textarea,
select {
    font-family: inherit;
    outline: none;
}

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

/* 加载动画 */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: loaderFadeOut 0.5s ease 2s forwards;
}

.loader-inner {
    display: flex;
    gap: 10px;
}

.loader-cube {
    width: 15px;
    height: 15px;
    background: var(--gradient-primary);
    border-radius: 4px;
    animation: loaderBounce 0.6s ease-in-out infinite;
}

.loader-cube:nth-child(2) {
    animation-delay: 0.1s;
}

.loader-cube:nth-child(3) {
    animation-delay: 0.2s;
}

.loader-cube:nth-child(4) {
    animation-delay: 0.3s;
}

@keyframes loaderBounce {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-20px);
    }
}

@keyframes loaderFadeOut {
    to {
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
    }
}

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

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-icon {
    font-size: 28px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: logoPulse 2s ease-in-out infinite;
}

@keyframes logoPulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
    }
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--white);
}

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

.nav-link {
    padding: 10px 18px;
    font-size: 15px;
    font-weight: 500;
    color: var(--gray-300);
    border-radius: 8px;
    position: relative;
    transition: var(--transition);
}

.nav-link::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
    transform: translateX(-50%);
}

.nav-link:hover,
.nav-link.active {
    color: var(--white);
}

.nav-link:hover::before,
.nav-link.active::before {
    width: 60%;
}

.nav-cta .btn-primary {
    padding: 10px 24px;
    font-size: 14px;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 24px;
    height: 2px;
    background: var(--white);
    transition: var(--transition);
}

/* 按钮 */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--border-radius);
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-arrow {
    width: 18px;
    height: 18px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    transition: var(--transition);
}

.btn-primary:hover .btn-arrow {
    transform: translateX(4px);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 14px 28px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--white);
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.btn-secondary .play-icon {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 50%;
    font-size: 10px;
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-white {
    padding: 16px 32px;
    background: var(--white);
    color: var(--dark);
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.btn-white:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(255, 255, 255, 0.2);
}

.btn-outline-white {
    padding: 16px 32px;
    background: transparent;
    color: var(--white);
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--border-radius);
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: var(--transition);
}

.btn-outline-white:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

/* 首屏 */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
    padding: 120px 0 80px;
}

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

.floating-shapes .shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(60px);
    opacity: 0.5;
    animation: floatShape 20s ease-in-out infinite;
}

.shape-1 {
    width: 400px;
    height: 400px;
    background: var(--primary);
    top: -100px;
    right: -100px;
}

.shape-2 {
    width: 300px;
    height: 300px;
    background: var(--secondary);
    bottom: -50px;
    left: -50px;
    animation-delay: -5s;
}

.shape-3 {
    width: 200px;
    height: 200px;
    background: var(--accent);
    top: 40%;
    left: 30%;
    animation-delay: -10s;
}

.shape-4 {
    width: 150px;
    height: 150px;
    background: #8b5cf6;
    bottom: 20%;
    right: 20%;
    animation-delay: -15s;
}

.shape-5 {
    width: 250px;
    height: 250px;
    background: #10b981;
    top: 60%;
    left: 10%;
    animation-delay: -8s;
}

@keyframes floatShape {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    25% {
        transform: translate(30px, -30px) scale(1.05);
    }

    50% {
        transform: translate(-20px, 20px) scale(0.95);
    }

    75% {
        transform: translate(20px, 10px) scale(1.02);
    }
}

.grid-lines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: linear-gradient(rgba(99, 102, 241, 0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(99, 102, 241, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        transform: translate(0, 0);
    }

    100% {
        transform: translate(60px, 60px);
    }
}

.hero-content {
    flex: 1;
    max-width: 650px;
    padding-left: 5%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 50px;
    font-size: 14px;
    color: var(--primary-light);
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: badgePulse 2s ease-in-out infinite;
}

@keyframes badgePulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.hero-title {
    font-size: clamp(40px, 5vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 24px;
}

.title-line {
    display: block;
    background: linear-gradient(135deg, var(--white) 0%, var(--gray-300) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.title-line:last-child {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-desc {
    font-size: 18px;
    color: var(--gray-400);
    margin-bottom: 36px;
    line-height: 1.7;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 42px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-plus {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-light);
}

.stat-label {
    display: block;
    font-size: 14px;
    color: var(--gray-500);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 50px;
    background: linear-gradient(180deg, transparent, var(--gray-700), transparent);
}

.hero-visual {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    width: 500px;
    height: 400px;
}

.code-window {
    background: var(--dark-light);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25), var(--shadow-glow);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.window-header {
    display: flex;
    gap: 8px;
    padding: 16px 20px;
    background: rgba(0, 0, 0, 0.2);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red {
    background: #ff5f56;
}

.dot.yellow {
    background: #ffbd2e;
}

.dot.green {
    background: #27ca40;
}

.window-content {
    padding: 24px;
}

.code-text {
    font-family: 'SF Mono', 'Fira Code', Consolas, monospace;
    font-size: 14px;
    line-height: 1.8;
    color: var(--gray-300);
}

.code-keyword {
    color: #c792ea;
}

.code-var {
    color: #82aaff;
}

.code-prop {
    color: #f78c6c;
}

.code-string {
    color: #c3e88d;
}

.code-func {
    color: #ffcb6b;
}

.orbit-ring {
    position: absolute;
    width: 600px;
    height: 600px;
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: orbitRotate 30s linear infinite;
}

.orbit-dot {
    position: absolute;
    width: 16px;
    height: 16px;
    background: var(--gradient-primary);
    border-radius: 50%;
    top: -8px;
    left: 50%;
    box-shadow: 0 0 20px var(--primary);
}

@keyframes orbitRotate {
    from {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--gray-500);
    font-size: 12px;
    animation: scrollBounce 2s ease-in-out infinite;
}

.mouse {
    width: 24px;
    height: 38px;
    border: 2px solid var(--gray-600);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--gray-500);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: wheelScroll 2s ease-in-out infinite;
}

@keyframes wheelScroll {

    0%,
    100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }

    50% {
        opacity: 0.3;
        transform: translateX(-50%) translateY(10px);
    }
}

@keyframes scrollBounce {

    0%,
    100% {
        transform: translateX(-50%) translateY(0);
    }

    50% {
        transform: translateX(-50%) translateY(10px);
    }
}

.animate-fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease forwards;
}

.animate-slide-up {
    opacity: 0;
    transform: translateY(30px);
    animation: slideUp 0.8s ease forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

.delay-4 {
    animation-delay: 0.8s;
}

@keyframes fadeIn {
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 区块通用 */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.1);
    color: var(--primary-light);
    font-size: 14px;
    font-weight: 500;
    border-radius: 50px;
    margin-bottom: 16px;
}

.section-title {
    font-size: clamp(32px, 4vw, 48px);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-desc {
    font-size: 18px;
    color: var(--gray-400);
}

/* 服务区域 */
.services {
    padding: 120px 0;
    background: var(--dark);
}

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

.service-card {
    position: relative;
    background: var(--dark-light);
    border-radius: var(--border-radius-lg);
    padding: 36px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(99, 102, 241, 0.3);
}

.service-card:hover::before {
    opacity: 0.05;
}

.service-card.featured {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
    border-color: rgba(99, 102, 241, 0.3);
}

.card-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 4px 12px;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 12px;
    font-weight: 600;
    border-radius: 50px;
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    opacity: 0;
    transition: 0.5s;
    pointer-events: none;
}

.service-card:hover .card-glow {
    opacity: 1;
}

.card-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}

.card-icon svg {
    width: 28px;
    height: 28px;
    fill: none;
    stroke: var(--white);
    stroke-width: 2;
}

.card-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
    position: relative;
    z-index: 1;
}

.card-desc {
    font-size: 15px;
    color: var(--gray-400);
    margin-bottom: 20px;
    line-height: 1.6;
    position: relative;
    z-index: 1;
}

.card-features {
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}

.card-features li {
    font-size: 14px;
    color: var(--gray-500);
    padding: 6px 0 6px 20px;
    position: relative;
}

.card-features li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary);
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--primary-light);
    position: relative;
    z-index: 1;
}

.card-link span {
    transition: var(--transition);
}

.card-link:hover {
    color: var(--white);
}

.card-link:hover span {
    transform: translateX(4px);
}

/* 关于我们 */
.about {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-light) 100%);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-content .section-title {
    text-align: left;
    margin-bottom: 24px;
}

.about-text {
    font-size: 16px;
    color: var(--gray-400);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin: 32px 0;
}

.feature-item {
    display: flex;
    gap: 16px;
}

.feature-icon {
    width: 28px;
    height: 28px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    color: var(--white);
    flex-shrink: 0;
}

.feature-text h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 4px;
}

.feature-text p {
    font-size: 14px;
    color: var(--gray-500);
}

.about-visual {
    position: relative;
    height: 500px;
}

.visual-card {
    position: absolute;
    background: var(--dark);
    border-radius: var(--border-radius-lg);
    padding: 24px 32px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: visualFloat 6s ease-in-out infinite;
}

.visual-card.card-1 {
    top: 0;
    left: 20%;
}

.visual-card.card-2 {
    top: 30%;
    right: 0;
    animation-delay: -2s;
}

.visual-card.card-3 {
    bottom: 10%;
    left: 10%;
    animation-delay: -4s;
}

@keyframes visualFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-15px);
    }
}

.visual-number {
    font-size: 42px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.visual-label {
    font-size: 14px;
    color: var(--gray-500);
}

.about-image {
    position: absolute;
    bottom: 0;
    right: 15%;
    width: 280px;
    height: 280px;
}

.image-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(139, 92, 246, 0.2));
    border-radius: 30px;
    overflow: hidden;
}

.placeholder-pattern {
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.4) 0%, transparent 50%), radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.4) 0%, transparent 50%);
    animation: patternPulse 4s ease-in-out infinite;
}

@keyframes patternPulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.1);
        opacity: 0.8;
    }
}

/* 技术栈 */
.tech-stack {
    padding: 80px 0;
    background: var(--dark-light);
    overflow: hidden;
}

.tech-marquee {
    overflow: hidden;
    margin-top: 40px;
}

.marquee-content {
    display: flex;
    gap: 24px;
    animation: marquee 30s linear infinite;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

.tech-item {
    flex-shrink: 0;
    padding: 16px 32px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.tech-item span {
    font-size: 16px;
    font-weight: 600;
    color: var(--gray-400);
    transition: var(--transition);
}

.tech-item:hover {
    background: rgba(99, 102, 241, 0.1);
    border-color: rgba(99, 102, 241, 0.3);
}

.tech-item:hover span {
    color: var(--white);
}

/* 案例展示 */
.cases {
    padding: 120px 0;
    background: var(--dark);
}

.cases-filter {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 24px;
    background: transparent;
    color: var(--gray-400);
    font-size: 14px;
    font-weight: 500;
    border-radius: 50px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

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

.cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 280px);
    gap: 24px;
}

.case-card {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    cursor: pointer;
}

.case-card.large {
    grid-row: span 2;
}

.case-image {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--dark-light), var(--gray-800));
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.case-svg {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    transition: var(--transition);
}

.case-card:hover .case-svg {
    transform: scale(1.05);
    opacity: 0.8;
}

.case-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 32px;
    background: linear-gradient(180deg, transparent 0%, rgba(0, 0, 0, 0.9) 100%);
    transform: translateY(60px);
    opacity: 0.8;
    transition: var(--transition);
}

.case-card:hover .case-overlay {
    transform: translateY(0);
    opacity: 1;
}

.case-category {
    display: inline-block;
    padding: 4px 12px;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 12px;
    font-weight: 500;
    border-radius: 50px;
    margin-bottom: 12px;
}

.case-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}

.case-desc {
    font-size: 14px;
    color: var(--gray-400);
    margin-bottom: 16px;
}

.case-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--primary-light);
}

.case-link:hover {
    color: var(--white);
}

/* 工作流程 */
.process {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-light) 100%);
}

.process-timeline {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.timeline-line {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--primary), var(--secondary));
}

.process-step {
    display: flex;
    align-items: flex-start;
    margin-bottom: 60px;
    position: relative;
}

.process-step:nth-child(even) {
    flex-direction: row-reverse;
}

.process-step:nth-child(even) .step-content {
    text-align: right;
    padding-right: 80px;
    padding-left: 0;
}

.step-number {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 60px;
    background: var(--dark);
    border: 3px solid var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 800;
    color: var(--primary);
    z-index: 1;
    transition: var(--transition);
}

.process-step:hover .step-number {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--white);
    transform: translateX(-50%) scale(1.1);
}

.step-content {
    flex: 1;
    padding-left: 80px;
}

.step-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}

.step-content p {
    font-size: 15px;
    color: var(--gray-400);
}

/* 团队展示 */
.team {
    padding: 120px 0;
    background: var(--dark-light);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.team-card {
    text-align: center;
    padding: 40px 24px;
    background: var(--dark);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.team-card:hover {
    transform: translateY(-8px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-glow);
}

.member-avatar {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: 700;
    color: var(--white);
}

.member-social {
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    opacity: 0;
    transition: var(--transition);
}

.team-card:hover .member-social {
    opacity: 1;
    bottom: -15px;
}

.member-social a {
    width: 32px;
    height: 32px;
    background: var(--dark-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    color: var(--gray-400);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.member-social a:hover {
    background: var(--primary);
    color: var(--white);
}

.member-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 4px;
}

.member-role {
    font-size: 14px;
    color: var(--primary-light);
    margin-bottom: 12px;
}

.member-desc {
    font-size: 14px;
    color: var(--gray-500);
}

/* 客户评价 */
.testimonials {
    padding: 120px 0;
    background: var(--dark);
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.testimonial-card {
    padding: 40px;
    background: var(--dark-light);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
    position: relative;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    border-color: rgba(99, 102, 241, 0.2);
}

.quote-icon {
    font-size: 80px;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    opacity: 0.3;
    position: absolute;
    top: 20px;
    left: 30px;
}

.testimonial-text {
    font-size: 16px;
    color: var(--gray-300);
    line-height: 1.8;
    margin-bottom: 24px;
    position: relative;
    z-index: 1;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 16px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 600;
    color: var(--white);
}

.author-info h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
}

.author-info p {
    font-size: 13px;
    color: var(--gray-500);
}

.testimonial-rating {
    position: absolute;
    bottom: 40px;
    right: 40px;
    color: #fbbf24;
    font-size: 14px;
    letter-spacing: 2px;
}

/* 联系我们 */
.contact {
    padding: 120px 0;
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-light) 100%);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-info .section-title {
    text-align: left;
    margin-bottom: 20px;
}

.contact-desc {
    font-size: 16px;
    color: var(--gray-400);
    margin-bottom: 40px;
    line-height: 1.7;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 24px;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    gap: 16px;
}

.contact-icon {
    width: 48px;
    height: 48px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 4px;
}

.contact-text p {
    font-size: 14px;
    color: var(--gray-500);
}

.social-links {
    display: flex;
    gap: 12px;
}

.social-link {
    padding: 10px 20px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--gray-400);
    font-size: 14px;
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.social-link:hover {
    background: var(--gradient-primary);
    color: var(--white);
    border-color: transparent;
}

.contact-form-wrapper {
    background: var(--dark);
    border-radius: var(--border-radius-lg);
    padding: 48px;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

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

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 16px 20px;
    background: var(--dark-light);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: var(--white);
    font-size: 15px;
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-600);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236b7280' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 16px;
}

.form-group select option {
    background: var(--dark);
    color: var(--white);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.input-focus {
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
    transform: translateX(-50%);
}

.form-group input:focus~.input-focus,
.form-group textarea:focus~.input-focus {
    width: 100%;
}

/* CTA区域 */
.cta {
    padding: 120px 0;
    position: relative;
    overflow: hidden;
    background: var(--gradient-primary);
}

.cta-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.cta-particles span {
    position: absolute;
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    animation: particleFloat 15s linear infinite;
}

.cta-particles span:nth-child(1) {
    left: 10%;
    animation-delay: 0s;
}

.cta-particles span:nth-child(2) {
    left: 20%;
    animation-delay: -2s;
}

.cta-particles span:nth-child(3) {
    left: 30%;
    animation-delay: -4s;
}

.cta-particles span:nth-child(4) {
    left: 40%;
    animation-delay: -6s;
}

.cta-particles span:nth-child(5) {
    left: 50%;
    animation-delay: -8s;
}

.cta-particles span:nth-child(6) {
    left: 60%;
    animation-delay: -10s;
}

.cta-particles span:nth-child(7) {
    left: 70%;
    animation-delay: -12s;
}

.cta-particles span:nth-child(8) {
    left: 80%;
    animation-delay: -14s;
}

.cta-particles span:nth-child(9) {
    left: 90%;
    animation-delay: -16s;
}

.cta-particles span:nth-child(10) {
    left: 95%;
    animation-delay: -18s;
}

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }

    10% {
        opacity: 1;
    }

    90% {
        opacity: 1;
    }

    100% {
        transform: translateY(-100vh) scale(1);
        opacity: 0;
    }
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.cta-content h2 {
    font-size: clamp(32px, 4vw, 52px);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 16px;
}

.cta-content p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
}

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

/* 页脚 */
.footer {
    padding: 80px 0 32px;
    background: var(--gray-900);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 60px;
}

.footer-brand .logo {
    margin-bottom: 20px;
}

.footer-desc {
    font-size: 14px;
    color: var(--gray-500);
    line-height: 1.7;
    margin-bottom: 24px;
}

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

.footer-social a {
    padding: 8px 16px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--gray-500);
    font-size: 13px;
    border-radius: 6px;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary);
    color: var(--white);
}

.footer-links h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 20px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 14px;
    color: var(--gray-500);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
    padding-left: 4px;
}

.footer-newsletter h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 12px;
}

.footer-newsletter p {
    font-size: 14px;
    color: var(--gray-500);
    margin-bottom: 16px;
}

.newsletter-form {
    display: flex;
    gap: 8px;
}

.newsletter-form input {
    flex: 1;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--white);
    font-size: 14px;
}

.newsletter-form input::placeholder {
    color: var(--gray-600);
}

.newsletter-form button {
    padding: 12px 20px;
    background: var(--gradient-primary);
    color: var(--white);
    font-size: 14px;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
}

.newsletter-form button:hover {
    transform: translateY(-2px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 32px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-bottom p {
    font-size: 14px;
    color: var(--gray-600);
}

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

.footer-legal a {
    font-size: 14px;
    color: var(--gray-600);
    transition: var(--transition);
}

.footer-legal a:hover {
    color: var(--white);
}

/* 回到顶部 */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
}

.back-to-top svg {
    width: 20px;
    height: 20px;
    fill: none;
    stroke: var(--white);
    stroke-width: 2;
}

/* 滚动动画 */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* 响应式 */
@media (max-width: 1200px) {
    .hero-visual {
        width: 400px;
        right: 2%;
    }

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

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

    .footer-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {

    .nav-links,
    .nav-cta {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        flex-direction: column;
        text-align: center;
        padding: 140px 0 80px;
    }

    .hero-content {
        padding-left: 0;
        max-width: 100%;
    }

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

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

    .hero-visual {
        position: relative;
        top: auto;
        right: auto;
        transform: none;
        margin-top: 60px;
        width: 100%;
        max-width: 450px;
    }

    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .about-visual {
        height: 400px;
    }

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

    .case-card.large {
        grid-row: span 1;
    }

    .testimonials-slider {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {

    .services-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }

    .process-step,
    .process-step:nth-child(even) {
        flex-direction: column;
        text-align: center;
    }

    .step-number {
        position: relative;
        left: auto;
        transform: none;
        margin-bottom: 20px;
    }

    .step-content,
    .process-step:nth-child(even) .step-content {
        padding: 0;
        text-align: center;
    }

    .timeline-line {
        display: none;
    }

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

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

    .footer-social {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 16px;
    }

    .footer-legal {
        justify-content: center;
    }
}