/* ==================== 基础样式重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #ec4899;
    --accent: #06b6d4;
    --dark: #0f172a;
    --dark-light: #1e293b;
    --dark-lighter: #334155;
    --light: #f8fafc;
    --gray: #94a3b8;
    --gradient-1: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-2: linear-gradient(135deg, #06b6d4 0%, #6366f1 100%);
    --gradient-3: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--dark);
    color: var(--light);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.highlight {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==================== 粒子背景 ==================== */
#particles-js {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ==================== 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(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    padding: 15px 0;
    box-shadow: var(--shadow-lg);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-img {
    width: 50px;
    height: 50px;
    border-radius: 12px;
    object-fit: cover;
    box-shadow: 0 4px 15px rgba(6, 182, 212, 0.3);
    transition: var(--transition);
    border: 2px solid rgba(6, 182, 212, 0.3);
}

.logo:hover .logo-img {
    transform: scale(1.05) rotate(5deg);
    box-shadow: 0 6px 25px rgba(6, 182, 212, 0.5);
}

.logo-text-wrap {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.logo-text {
    font-size: 1.4rem;
    font-weight: 800;
    color: #06b6d4;
}

.logo-slogan {
    font-size: 0.75rem;
    color: var(--gray);
    letter-spacing: 2px;
    font-weight: 400;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-link {
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    transition: var(--transition);
    color: var(--light);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-1);
    transition: var(--transition);
}

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

.nav-link:hover {
    color: var(--primary-light);
}

.nav-text {
    position: relative;
    z-index: 2;
}

/* 导航链接粒子效果 */
.nav-link[data-nav-particles] {
    overflow: visible;
}

.nav-particles {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 60px;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-link:hover .nav-particles {
    opacity: 1;
}

.nav-particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 6px var(--primary), 0 0 12px var(--primary);
    animation: nav-particle-float 2s ease-in-out infinite;
}

.nav-particle:nth-child(1) { top: 20%; left: 10%; animation-delay: 0s; }
.nav-particle:nth-child(2) { top: 80%; left: 15%; animation-delay: 0.2s; background: #ec4899; }
.nav-particle:nth-child(3) { top: 30%; left: 85%; animation-delay: 0.4s; background: #06b6d4; }
.nav-particle:nth-child(4) { top: 70%; left: 90%; animation-delay: 0.6s; background: #8b5cf6; }
.nav-particle:nth-child(5) { top: 10%; left: 50%; animation-delay: 0.8s; }
.nav-particle:nth-child(6) { top: 90%; left: 50%; animation-delay: 1s; background: #fbbf24; }

@keyframes nav-particle-float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.8;
    }
    25% {
        transform: translate(5px, -5px) scale(1.2);
        opacity: 1;
    }
    50% {
        transform: translate(0, -10px) scale(1);
        opacity: 0.8;
    }
    75% {
        transform: translate(-5px, -5px) scale(1.2);
        opacity: 1;
    }
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--light);
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ==================== Hero区域 ==================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 20px 80px;
    position: relative;
    z-index: 1;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(236, 72, 153, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 0%, var(--dark-light) 0%, var(--dark) 70%);
    overflow: hidden;
}

/* 星云背景效果 */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 15% 30%, rgba(99, 102, 241, 0.4) 0%, transparent 25%),
        radial-gradient(circle at 85% 20%, rgba(236, 72, 153, 0.35) 0%, transparent 20%),
        radial-gradient(circle at 70% 60%, rgba(6, 182, 212, 0.3) 0%, transparent 30%),
        radial-gradient(circle at 25% 70%, rgba(139, 92, 246, 0.25) 0%, transparent 25%),
        radial-gradient(circle at 90% 80%, rgba(99, 102, 241, 0.2) 0%, transparent 20%),
        radial-gradient(circle at 50% 50%, rgba(236, 72, 153, 0.1) 0%, transparent 40%);
    animation: nebula-float 20s ease-in-out infinite;
    pointer-events: none;
}

/* 网格叠加 */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        repeating-linear-gradient(90deg, transparent, transparent 80px, rgba(99, 102, 241, 0.02) 80px, rgba(99, 102, 241, 0.02) 81px),
        repeating-linear-gradient(0deg, transparent, transparent 80px, rgba(99, 102, 241, 0.02) 80px, rgba(99, 102, 241, 0.02) 81px);
    pointer-events: none;
}

@keyframes nebula-float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
        opacity: 0.8;
    }
    25% {
        transform: translate(2%, -2%) scale(1.05);
        opacity: 1;
    }
    50% {
        transform: translate(-1%, 1%) scale(0.98);
        opacity: 0.9;
    }
    75% {
        transform: translate(1%, 2%) scale(1.02);
        opacity: 1;
    }
}

.hero-content {
    max-width: 900px;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 0.9rem;
    color: var(--primary-light);
    margin-bottom: 30px;
    position: relative;
    z-index: 2;
}

.hero-badge i {
    color: #fbbf24;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 20px;
    position: relative;
    z-index: 2;
    color: var(--light);
}

/* 打字机效果 */
.typewriter-cursor {
    display: inline-block;
    width: 4px;
    height: 1em;
    background: linear-gradient(180deg, #6366f1, #ec4899);
    margin-left: 5px;
    animation: blink 0.8s infinite;
    vertical-align: middle;
    border-radius: 2px;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.hero-subtitle {
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    color: var(--gray);
    margin-bottom: 15px;
    font-weight: 300;
    position: relative;
    z-index: 2;
}

.hero-desc {
    font-size: 1rem;
    color: var(--gray);
    margin-bottom: 40px;
    position: relative;
    z-index: 2;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
    position: relative;
    z-index: 2;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 15px 35px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    position: relative;
    z-index: 2;
}

.btn-primary {
    background: var(--gradient-1);
    color: white;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: transparent;
    color: var(--light);
    border: 2px solid var(--dark-lighter);
}

.btn-secondary:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

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

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
    position: relative;
    z-index: 2;
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 900;
    color: #818cf8;
}

.stat-plus {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-light);
}

.stat-label {
    display: block;
    color: var(--gray);
    font-size: 0.9rem;
    margin-top: 5px;
}

/* 滚动指示器 */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    z-index: 2;
}

.mouse {
    width: 25px;
    height: 40px;
    border: 2px solid var(--gray);
    border-radius: 15px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--primary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 20px; }
}

.arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
}

.arrow span {
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--gray);
    border-bottom: 2px solid var(--gray);
    transform: rotate(45deg);
    animation: arrow 2s infinite;
}

.arrow span:nth-child(2) {
    animation-delay: 0.2s;
}

@keyframes arrow {
    0%, 100% { opacity: 0; }
    50% { opacity: 1; }
}

/* ==================== 区域通用样式 ==================== */
section {
    padding: 100px 0;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 60px;
}

.section-tag {
    display: inline-block;
    padding: 5px 15px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--primary-light);
    margin-bottom: 15px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--light);
}

.section-desc {
    color: var(--gray);
    font-size: 1.1rem;
}

/* ==================== 区域粒子背景 ==================== */
.section-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.services .container,
.tech .container,
.process .container,
.contact .container {
    position: relative;
    z-index: 1;
}

/* ==================== 服务区域 ==================== */
.services {
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-light) 50%, var(--dark) 100%);
    padding: 120px 0;
    position: relative;
    overflow: hidden;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.service-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--dark-lighter);
    border-radius: 24px;
    padding: 50px 40px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    z-index: 1;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-1);
    transform: scaleX(0);
    transition: var(--transition);
}

.service-card::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

/* 聚光灯效果 */
.service-card .spotlight {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
    z-index: 1;
    border-radius: 24px;
    overflow: hidden;
    --spotlight-x: 50%;
    --spotlight-y: 50%;
}

.service-card .spotlight::before {
    content: '';
    position: absolute;
    left: var(--spotlight-x);
    top: var(--spotlight-y);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.6) 0%, rgba(99, 102, 241, 0.4) 25%, rgba(139, 92, 246, 0.2) 50%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    transition: left 0.1s ease-out, top 0.1s ease-out;
}

.service-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

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

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

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

.service-icon {
    position: relative;
    width: 70px;
    height: 70px;
    margin-bottom: 25px;
    z-index: 2;
}

.service-icon i {
    font-size: 2rem;
    color: var(--primary-light);
    position: relative;
    z-index: 1;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-1);
    border-radius: 15px;
    opacity: 0.1;
    transition: var(--transition);
}

.service-card:hover .icon-bg {
    opacity: 0.2;
    transform: rotate(10deg) scale(1.1);
}

.service-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    color: var(--light);
    z-index: 2;
    position: relative;
}

.service-card p {
    color: var(--gray);
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.7;
    z-index: 2;
    position: relative;
}

.service-features {
    margin-bottom: 25px;
    z-index: 2;
    position: relative;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.service-features li i {
    color: #10b981;
    font-size: 0.8rem;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-light);
    font-weight: 500;
    transition: var(--transition);
    z-index: 2;
    position: relative;
}

.service-link:hover {
    gap: 12px;
    color: var(--primary);
}

/* ==================== 技术栈区域 ==================== */
.tech {
    background: var(--dark);
    position: relative;
    overflow: hidden;
}

.tech-showcase {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 50px;
}

.tech-main {
    position: relative;
}

.tech-badge {
    width: 200px;
    height: 200px;
    background: var(--gradient-2);
    border-radius: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 15px;
    font-size: 1.5rem;
    font-weight: 700;
    position: relative;
    box-shadow: var(--shadow-glow);
}

.tech-badge i {
    font-size: 4rem;
}

.tech-pulse {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: 30px;
    background: var(--gradient-2);
    opacity: 0.3;
    animation: pulse 2s infinite;
    z-index: -1;
}

@keyframes pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.3; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0; }
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    width: 100%;
    max-width: 800px;
}

.tech-item {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--dark-lighter);
    border-radius: 15px;
    padding: 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    transition: var(--transition);
}

.tech-item:hover {
    border-color: var(--primary);
    transform: translateY(-5px);
    background: rgba(99, 102, 241, 0.1);
}

.tech-item i {
    font-size: 2.5rem;
    color: var(--primary-light);
}

.tech-item span {
    font-size: 0.9rem;
    color: var(--gray);
}

/* ==================== 服务流程 ==================== */
.process {
    background: linear-gradient(180deg, var(--dark) 0%, var(--dark-light) 100%);
}

.process-timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.process-line {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, var(--primary) 50%, transparent 100%);
    transform: translateY(-50%);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    position: relative;
}

.process-step {
    text-align: center;
    position: relative;
}

.step-number {
    font-size: 4rem;
    font-weight: 900;
    color: transparent;
    -webkit-text-stroke: 1px var(--primary);
    opacity: 0.3;
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 0;
}

.step-content {
    position: relative;
    z-index: 1;
    background: var(--dark-light);
    border: 1px solid var(--dark-lighter);
    border-radius: 20px;
    padding: 30px 20px;
    transition: var(--transition);
}

.step-content:hover {
    border-color: var(--primary);
    transform: translateY(-10px);
}

.step-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-1);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
}

.step-content h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: var(--light);
}

.step-content p {
    color: var(--gray);
    font-size: 0.9rem;
}

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

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-info h3,
.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: var(--light);
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 25px;
    margin-bottom: 40px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary-light);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.contact-details .label {
    font-size: 0.85rem;
    color: var(--gray);
}

.contact-details .value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--light);
    display: flex;
    align-items: center;
    gap: 8px;
}

.copy-btn {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.3) 0%, rgba(139, 92, 246, 0.3) 100%);
    border: 2px solid var(--primary);
    border-radius: 8px;
    padding: 6px 12px;
    cursor: pointer;
    color: white;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.4), inset 0 0 10px rgba(99, 102, 241, 0.2);
    text-shadow: 0 0 5px rgba(99, 102, 241, 0.8);
}

.copy-btn i {
    font-size: 1rem;
}

.copy-btn:hover {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    transform: scale(1.08);
    box-shadow: 0 0 25px rgba(99, 102, 241, 0.8), inset 0 0 15px rgba(255, 255, 255, 0.2);
    border-color: var(--primary-light);
}

.copy-btn:active {
    transform: scale(0.95);
}

.copy-btn.copied {
    background: linear-gradient(135deg, #10b981 0%, #34d399 100%);
    border-color: #10b981;
    color: white;
    box-shadow: 0 0 20px rgba(16, 185, 129, 0.6);
}

.qr-codes {
    display: flex;
    gap: 20px;
}

.qr-item {
    flex: 1;
}

.qr-placeholder {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--dark-lighter);
    border-radius: 15px;
    padding: 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--gray);
}

.qr-placeholder i {
    font-size: 3rem;
    color: var(--primary-light);
}

/* 联系表单 */
.contact-form-wrapper {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--dark-lighter);
    border-radius: 20px;
    padding: 40px;
}

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

.form-group {
    position: relative;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 15px 20px 15px 50px;
    background: var(--dark);
    border: 1px solid var(--dark-lighter);
    border-radius: 12px;
    color: var(--light);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

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

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

.form-group i {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray);
}

.form-group textarea ~ i {
    top: 20px;
    transform: none;
}

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

/* ==================== 页脚 ==================== */
.footer {
    background: var(--dark-light);
    border-top: 1px solid var(--dark-lighter);
}

.footer-top {
    padding: 80px 0 40px;
}

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

.footer-brand p {
    color: var(--gray);
    margin: 20px 0;
    line-height: 1.8;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--dark-lighter);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

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

.footer-links h4,
.footer-contact h4 {
    font-size: 1.1rem;
    margin-bottom: 25px;
    color: var(--light);
}

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

.footer-links a {
    color: var(--gray);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--primary-light);
    padding-left: 5px;
}

.footer-contact p {
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 15px;
}

.footer-contact i {
    color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid var(--dark-lighter);
    padding: 30px 0;
    background: linear-gradient(180deg, var(--dark-light) 0%, var(--dark) 100%);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.copyright {
    color: var(--gray);
    font-size: 0.9rem;
}

.tech-badge-footer {
    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, 0.3);
    border-radius: 50px;
    font-size: 0.85rem;
    color: var(--primary-light);
}

.tech-badge-footer i {
    font-size: 1.1rem;
}

/* ==================== 悬浮按钮 ==================== */
.floating-buttons {
    position: fixed;
    right: 30px;
    bottom: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

.float-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: white;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
}

.float-btn:hover {
    transform: translateY(-5px) scale(1.1);
}

.float-btn.qq {
    background: #12b7f5;
}

.float-btn.wechat {
    background: #07c160;
}

.float-btn.top {
    background: var(--gradient-1);
    opacity: 0;
    visibility: hidden;
}

.float-btn.top.visible {
    opacity: 1;
    visibility: visible;
}

/* ==================== 粒子动画 ==================== */
@keyframes float-up {
    0% {
        transform: translateY(0) scale(1);
        opacity: 0;
    }
    10% {
        opacity: 0.8;
    }
    90% {
        opacity: 0.8;
    }
    100% {
        transform: translateY(-100vh) scale(0.5);
        opacity: 0;
    }
}

@keyframes shooting-star {
    0% {
        transform: translateX(0) translateY(0) rotate(-45deg);
        opacity: 1;
    }
    100% {
        transform: translateX(-200px) translateY(200px) rotate(-45deg);
        opacity: 0;
    }
}

/* ==================== 动画类 ==================== */
[data-aos] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

[data-aos].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* 成功提示 */
.success-message {
    background: #10b981;
    color: white;
    padding: 15px 20px;
    border-radius: 10px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-line {
        display: none;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: rgba(15, 23, 42, 0.98);
        flex-direction: column;
        padding: 100px 40px;
        gap: 30px;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .process-steps {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .qr-codes {
        justify-content: center;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
        max-width: 600px;
        gap: 30px;
    }
    
    .service-card {
        padding: 40px 30px;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .tech-grid {
        grid-template-columns: 1fr 1fr;
        gap: 10px;
    }
    
    .tech-item {
        padding: 15px;
    }
    
    .tech-item i {
        font-size: 1.8rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form-wrapper {
        padding: 25px;
    }
    
    .floating-buttons {
        right: 15px;
        bottom: 15px;
    }
    
    .float-btn {
        width: 45px;
        height: 45px;
        font-size: 1.1rem;
    }
}