/* CSS变量 */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #06b6d4;
    --accent: #f472b6;
    --dark: #0f0f23;
    --darker: #080814;
    --light: #f8fafc;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --success: #22c55e;
    
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
    --gradient-accent: linear-gradient(135deg, #f472b6 0%, #6366f1 100%);
    --gradient-dark: linear-gradient(180deg, #0f0f23 0%, #1a1a3e 100%);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 30px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

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

/* 粒子背景 */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

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

/* ==========================================
   导航栏
   ========================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 15px 0;
    background: rgba(8, 8, 20, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 10px 0;
    background: rgba(8, 8, 20, 0.95);
}

.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: 10px;
    text-decoration: none;
    color: var(--light);
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    font-size: 1.8rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: rotate 8s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-link {
    color: var(--gray-light);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 5px 0;
    transition: var(--transition);
}

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

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

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

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--gradient-primary);
    color: white;
    text-decoration: none;
    font-weight: 600;
    border-radius: var(--radius-xl);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: var(--shadow-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px rgba(99, 102, 241, 0.5);
}

.btn-large {
    padding: 16px 36px;
    font-size: 1.1rem;
}

.btn-outline {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 28px;
    background: transparent;
    color: var(--light);
    text-decoration: none;
    font-weight: 600;
    border-radius: var(--radius-xl);
    border: 2px solid rgba(255, 255, 255, 0.2);
    cursor: pointer;
    transition: var(--transition);
}

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

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

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

/* ==========================================
   Hero区域
   ========================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: 120px 20px 80px;
    overflow: hidden;
}

.hero-content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 20px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: var(--radius-xl);
    margin-bottom: 30px;
    font-size: 0.9rem;
    color: var(--primary-light);
}

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

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.5); }
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 25px;
}

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

.outline-text {
    color: transparent;
    -webkit-text-stroke: 2px var(--light);
}

.hero-desc {
    font-size: 1.2rem;
    color: var(--gray-light);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    gap: 60px;
    justify-content: center;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* Hero视觉元素 */
.hero-visual {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    pointer-events: none;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.glowing-orb {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    filter: blur(40px);
    animation: glow 4s ease-in-out infinite alternate;
}

@keyframes glow {
    from { opacity: 0.5; transform: translate(-50%, -50%) scale(1); }
    to { opacity: 1; transform: translate(-50%, -50%) scale(1.2); }
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    color: var(--gray-light);
    font-size: 0.85rem;
    animation: bounce 2s infinite;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--gray);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--gray);
    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; }
}

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

/* ==========================================
   服务模块
   ========================================== */
.services {
    padding: 120px 0;
    background: var(--dark);
    position: relative;
}

.services::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary), transparent);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-xl);
    color: var(--primary-light);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.title-decoration {
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-desc {
    color: var(--gray-light);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.service-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-glow);
}

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

.service-card.featured {
    border-color: rgba(99, 102, 241, 0.3);
    background: rgba(99, 102, 241, 0.05);
}

.service-card.featured::before {
    opacity: 1;
}

.service-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 4px 12px;
    background: var(--gradient-accent);
    border-radius: var(--radius-xl);
    font-size: 0.75rem;
    font-weight: 600;
}

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

.icon-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0.1;
    border-radius: var(--radius-md);
    transform: rotate(-10deg);
}

.service-icon i {
    position: relative;
    font-size: 2rem;
    color: var(--primary-light);
    line-height: 70px;
    margin-left: 5px;
}

.service-card h3 {
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.service-card > p {
    color: var(--gray-light);
    margin-bottom: 20px;
    line-height: 1.7;
}

.service-features {
    list-style: none;
    margin-bottom: 25px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
    color: var(--gray-light);
    font-size: 0.95rem;
}

.service-features i {
    color: var(--success);
    font-size: 0.85rem;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

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

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

.cases-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 25px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    color: var(--gray-light);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

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

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.case-card {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 16/10;
    cursor: pointer;
}

.case-image {
    width: 100%;
    height: 100%;
    position: relative;
}

.case-visual {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(6, 182, 212, 0.2));
    display: flex;
    align-items: center;
    justify-content: center;
}

.case-visual i {
    font-size: 5rem;
    opacity: 0.5;
    color: var(--primary-light);
}

.case-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(8, 8, 20, 0.95) 100%);
    padding: 30px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    opacity: 0;
    transition: var(--transition);
}

.case-card:hover .case-overlay {
    opacity: 1;
}

.case-tag {
    display: inline-block;
    padding: 4px 12px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    font-size: 0.75rem;
    font-weight: 600;
    width: fit-content;
    margin-bottom: 10px;
}

.case-overlay h4 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 10px;
}

.case-overlay p {
    color: var(--gray-light);
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.case-link {
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.cases-cta {
    text-align: center;
    margin-top: 60px;
}

/* ==========================================
   关于我们
   ========================================== */
.about {
    padding: 120px 0;
    background: var(--dark);
}

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

.about-content .section-tag {
    display: inline-block;
}

.about-content .section-title {
    display: block;
    text-align: left;
}

.about-content .title-decoration {
    left: 0;
    transform: none;
}

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

.about-values {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 40px;
}

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

.value-icon {
    width: 50px;
    height: 50px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.value-icon i {
    font-size: 1.3rem;
    color: var(--primary-light);
}

.value-text h4 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.value-text p {
    color: var(--gray-light);
    font-size: 0.9rem;
}

/* 技术栈视觉 */
.about-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.tech-stack {
    position: relative;
    width: 300px;
    height: 300px;
}

.tech-orbit {
    position: absolute;
    inset: 0;
    animation: orbit 30s linear infinite;
}

@keyframes orbit {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.tech-item {
    position: absolute;
    width: 60px;
    height: 60px;
    background: rgba(99, 102, 241, 0.1);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: counter-orbit 30s linear infinite;
}

@keyframes counter-orbit {
    from { transform: rotate(0deg); }
    to { transform: rotate(-360deg); }
}

.tech-item i {
    font-size: 1.5rem;
    color: var(--primary-light);
}

.tech-item:nth-child(1) { top: 0; left: 50%; transform: translateX(-50%); }
.tech-item:nth-child(2) { top: 25%; right: 0; }
.tech-item:nth-child(3) { bottom: 25%; right: 0; }
.tech-item:nth-child(4) { bottom: 0; left: 50%; transform: translateX(-50%); }
.tech-item:nth-child(5) { bottom: 25%; left: 0; }
.tech-item:nth-child(6) { top: 25%; left: 0; }

.tech-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100px;
    height: 100px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

.tech-center span {
    font-size: 2rem;
    font-weight: 900;
}

/* 客户Logo */
.clients {
    margin-top: 80px;
    padding-top: 60px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.clients-title {
    text-align: center;
    color: var(--gray);
    font-size: 0.9rem;
    margin-bottom: 40px;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.clients-logos {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}

.client-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    opacity: 0.5;
    transition: var(--transition);
}

.client-logo:hover {
    opacity: 1;
}

.client-logo i {
    font-size: 1.5rem;
    color: var(--gray-light);
}

.client-logo span {
    color: var(--gray-light);
    font-weight: 600;
}

/* ==========================================
   联系我们
   ========================================== */
.contact {
    padding: 120px 0;
    background: var(--darker);
    position: relative;
}

.contact::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--secondary), transparent);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    align-items: start;
}

.contact-info .section-tag {
    display: inline-block;
}

.contact-info .section-title {
    display: block;
    text-align: left;
}

.contact-info .title-decoration {
    left: 0;
    transform: none;
}

.contact-desc {
    color: var(--gray-light);
    margin-bottom: 40px;
    line-height: 1.8;
}

.contact-methods {
    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-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon i {
    font-size: 1.2rem;
    color: var(--primary-light);
}

.contact-text .label {
    display: block;
    color: var(--gray);
    font-size: 0.85rem;
    margin-bottom: 5px;
}

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

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

.social-link {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-light);
    text-decoration: none;
    transition: var(--transition);
}

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

/* 表单 */
.contact-form-wrapper {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: 40px;
}

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

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group.full-width {
    grid-column: span 2;
}

.form-group label {
    color: var(--gray-light);
    font-size: 0.9rem;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 14px 18px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    color: var(--light);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.form-group select {
    cursor: pointer;
}

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

.btn-submit {
    grid-column: span 2;
    justify-self: start;
    margin-top: 10px;
}

/* ==========================================
   页脚
   ========================================== */
.footer {
    background: var(--dark);
    padding: 60px 0 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-main {
    display: flex;
    justify-content: space-between;
    gap: 60px;
    flex-wrap: wrap;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

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

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

.footer-brand p {
    color: var(--gray-light);
    font-size: 0.95rem;
    line-height: 1.7;
}

.footer-links {
    display: flex;
    gap: 80px;
}

.footer-col h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.footer-col ul {
    list-style: none;
}

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

.footer-col a {
    color: var(--gray-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-col a:hover {
    color: var(--light);
}

.footer-bottom {
    padding-top: 30px;
    text-align: center;
    color: var(--gray);
    font-size: 0.85rem;
}

.footer-bottom a {
    color: var(--gray-light);
    text-decoration: none;
}

/* ==========================================
   响应式设计
   ========================================== */
@media (max-width: 992px) {
    .nav-menu {
        display: none;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-cta {
        display: none;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 60px;
    }
    
    .about-visual {
        order: -1;
    }
    
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 8px;
    }
}

@media (max-width: 768px) {
    .hero-stats {
        gap: 30px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .cases-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-form {
        grid-template-columns: 1fr;
    }
    
    .form-group.full-width {
        grid-column: span 1;
    }
    
    .btn-submit {
        grid-column: span 1;
        width: 100%;
    }
    
    .footer-main {
        flex-direction: column;
        gap: 40px;
    }
    
    .footer-links {
        flex-wrap: wrap;
        gap: 40px;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-cta .btn-primary,
    .hero-cta .btn-outline {
        width: 100%;
        justify-content: center;
    }
    
    .floating-cards {
        width: 300px;
        height: 300px;
    }
    
    .float-card {
        width: 80px;
        height: 80px;
    }
    
    .tech-stack {
        width: 250px;
        height: 250px;
    }
}

/* 移动端菜单 */
@media (max-width: 992px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: rgba(8, 8, 20, 0.98);
        flex-direction: column;
        padding: 30px 20px;
        gap: 20px;
        transform: translateY(-100%);
        opacity: 0;
        transition: var(--transition);
    }
    
    .nav-menu.active {
        display: flex;
        transform: translateY(0);
        opacity: 1;
    }
    
    .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);
    }
}