/* ==================== 全局重置 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* 深邃科技配色 - 赛博朋克风格 */
    --primary: #00d4ff;
    --primary-light: #5eead4;
    --primary-dark: #0891b2;
    --accent: #00ff88;
    --accent-secondary: #8b5cf6;
    
    --dark: #030712;
    --darker: #000000;
    --card-bg: rgba(15, 23, 42, 0.6);
    --card-border: rgba(0, 212, 255, 0.12);
    --gray-900: #0f172a;
    --gray-800: #1e293b;
    --gray-700: #334155;
    --gray-600: #475569;
    --gray-400: #94a3b8;
    --gray-300: #cbd5e1;
    --white: #ffffff;
    
    /* 渐变 */
    --gradient: linear-gradient(135deg, var(--primary), var(--accent));
    --gradient-purple: linear-gradient(135deg, var(--accent-secondary), var(--primary));
    --gradient-subtle: linear-gradient(135deg, rgba(0,212,255,0.1), rgba(0,255,136,0.05));
    --gradient-glow: linear-gradient(135deg, rgba(0,212,255,0.3), rgba(0,255,136,0.2));
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--dark);
    color: var(--gray-300);
    line-height: 1.7;
    overflow-x: hidden;
}

/* 网格背景 */
.grid-bg {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        linear-gradient(rgba(0,212,255,0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,212,255,0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    pointer-events: none;
    z-index: 0;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    position: relative;
    z-index: 1;
}

/* ==================== 通用区块 ==================== */
.section {
    padding: 100px 0;
    position: relative;
}

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

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--gradient-subtle);
    border: 1px solid rgba(0,212,255,0.2);
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-tag i {
    font-size: 0.9rem;
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.1rem;
    color: var(--gray-400);
    max-width: 600px;
    margin: 0 auto;
}

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

/* ==================== 导航栏 ==================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    background: rgba(3, 7, 18, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0,212,255,0.1);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 12px 0;
    background: rgba(3, 7, 18, 0.95);
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo img {
    height: 65px;
    filter: drop-shadow(0 0 20px rgba(0,212,255,0.5));
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 4px;
}

.nav-link {
    display: block;
    padding: 10px 16px;
    color: var(--gray-400);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    text-shadow: 0 0 20px rgba(0,212,255,0.5);
}

.nav-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--gradient);
    color: var(--dark);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    box-shadow: 0 0 30px rgba(0,212,255,0.3);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 50px rgba(0,212,255,0.5);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    width: 22px;
    height: 2px;
    background: var(--white);
    transition: all 0.3s ease;
}

/* ==================== Hero 区域 ==================== */
.hero {
    min-height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    padding: 120px 24px 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% 0%, rgba(0,212,255,0.2) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(139,92,246,0.15) 0%, transparent 50%),
        radial-gradient(ellipse 50% 40% at 20% 80%, rgba(0,255,136,0.1) 0%, transparent 50%);
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    animation: float 8s ease-in-out infinite;
}

.glow-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0,212,255,0.2) 0%, transparent 70%);
    top: -200px;
    right: -200px;
}

.glow-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139,92,246,0.15) 0%, transparent 70%);
    bottom: -100px;
    left: -100px;
    animation-delay: -4s;
}

.glow-3 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0,255,136,0.15) 0%, transparent 70%);
    top: 40%;
    left: 10%;
    animation-delay: -2s;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-30px, 30px); }
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 60px;
    width: 100%;
}

.hero-content {
    flex: 1;
    max-width: 650px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(0,212,255,0.1);
    border: 1px solid rgba(0,212,255,0.3);
    color: var(--primary);
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 30px;
    animation: pulse 2s ease-in-out infinite;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    animation: blink 1s ease-in-out infinite;
    box-shadow: 0 0 10px var(--accent);
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 20px rgba(0,212,255,0.2); }
    50% { box-shadow: 0 0 40px rgba(0,212,255,0.4); }
}

.hero h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.15;
    margin-bottom: 24px;
}

.hero p {
    font-size: 1.15rem;
    color: var(--gray-400);
    margin-bottom: 40px;
    line-height: 1.9;
}

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

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: var(--gradient);
    color: var(--dark);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 0 30px rgba(0,212,255,0.3);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 50px rgba(0,212,255,0.5);
}

.btn-glow {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 32px;
    background: transparent;
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border: 1px solid rgba(0,212,255,0.4);
    transition: all 0.3s ease;
}

.btn-glow:hover {
    background: rgba(0,212,255,0.1);
    border-color: var(--primary);
    box-shadow: 0 0 30px rgba(0,212,255,0.2);
}

.btn-glow i {
    width: 36px;
    height: 36px;
    background: var(--gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    color: var(--dark);
}

.hero-visual {
    position: relative;
    width: 400px;
    height: 350px;
}

.floating-cards {
    position: relative;
    width: 100%;
    height: 100%;
}

.float-card {
    position: absolute;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    padding: 16px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    backdrop-filter: blur(10px);
    animation: floatCard 4s ease-in-out infinite;
}

.float-card i {
    width: 44px;
    height: 44px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--dark);
}

.float-card span {
    font-weight: 600;
    color: var(--white);
    font-size: 0.95rem;
}

.card-1 {
    top: 20px;
    left: 0;
    animation-delay: 0s;
}

.card-2 {
    top: 50%;
    right: 0;
    animation-delay: -1.3s;
}

.card-3 {
    bottom: 20px;
    left: 30px;
    animation-delay: -2.6s;
}

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

.card-2 {
    animation: floatCardAlt 4s ease-in-out infinite;
}

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

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: bounce 2s ease-in-out infinite;
}

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

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid rgba(0,212,255,0.4);
    position: relative;
}

.wheel {
    width: 4px;
    height: 10px;
    background: var(--gradient);
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
}

/* ==================== 数据统计 ==================== */
.stats-section {
    padding: 60px 0;
    background: linear-gradient(180deg, rgba(0,212,255,0.03) 0%, transparent 100%);
    border-top: 1px solid var(--card-border);
    border-bottom: 1px solid var(--card-border);
}

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

.stat-card {
    text-align: center;
    padding: 24px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0,212,255,0.4);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3), 0 0 30px rgba(0,212,255,0.1);
}

.stat-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
    font-size: 1.4rem;
    color: var(--primary);
}

.stat-info {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 2px;
    margin-bottom: 8px;
}

.stat-num {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--white);
    background: var(--gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-suffix {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--gray-400);
}

/* ==================== 服务区域 ==================== */
.services {
    background: var(--darker);
}

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

.service-card {
    perspective: 1000px;
    height: 360px;
}

.service-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.service-card:hover .service-card-inner {
    transform: rotateY(180deg);
}

.service-front,
.service-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    padding: 28px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
}

.service-front {
    display: flex;
    flex-direction: column;
}

.service-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    color: var(--dark);
    margin-bottom: 20px;
    position: relative;
}

.icon-glow {
    position: absolute;
    inset: -5px;
    background: var(--gradient);
    opacity: 0;
    filter: blur(15px);
    z-index: -1;
    transition: opacity 0.3s ease;
}

.service-card:hover .icon-glow {
    opacity: 0.5;
}

.service-front h3 {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 12px;
}

.service-front p {
    font-size: 0.9rem;
    color: var(--gray-400);
    flex: 1;
}

.service-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.service-tags span {
    padding: 6px 12px;
    background: var(--gradient-subtle);
    font-size: 0.75rem;
    color: var(--primary);
}

.service-back {
    background: var(--gradient);
    transform: rotateY(180deg);
    display: flex;
    flex-direction: column;
}

.service-back h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.service-back ul {
    list-style: none;
    flex: 1;
}

.service-back li {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--dark);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.service-back li i {
    font-size: 1rem;
}

.btn-sm {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    background: rgba(0,0,0,0.2);
    color: var(--dark);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    transition: all 0.3s ease;
    margin-top: auto;
}

.btn-sm:hover {
    background: rgba(0,0,0,0.3);
}

/* 额外服务卡片 */
.services-extra {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-top: 24px;
}

.extra-card {
    padding: 24px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    text-align: center;
    transition: all 0.3s ease;
}

.extra-card:hover {
    border-color: rgba(0,212,255,0.4);
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.extra-card i {
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 16px;
}

.extra-card h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 8px;
}

.extra-card p {
    font-size: 0.85rem;
    color: var(--gray-400);
}

/* ==================== 项目展示 ==================== */
.projects {
    background: var(--dark);
}

.projects-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 40px;
}

.tab-btn {
    padding: 10px 24px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--gray-400);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn:hover,
.tab-btn.active {
    background: var(--gradient);
    border-color: transparent;
    color: var(--dark);
}

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

.project-card {
    padding: 28px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    transition: all 0.3s ease;
    position: relative;
}

.project-card:hover {
    border-color: rgba(0,212,255,0.4);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.project-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 10px;
    background: var(--gradient-subtle);
    font-size: 0.7rem;
    color: var(--primary);
    font-weight: 600;
}

.project-icon {
    width: 56px;
    height: 56px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    color: var(--dark);
    margin-bottom: 20px;
}

.project-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 10px;
}

.project-card p {
    font-size: 0.85rem;
    color: var(--gray-400);
    margin-bottom: 16px;
    line-height: 1.6;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: gap 0.3s ease;
}

.project-link:hover {
    gap: 10px;
}

/* ==================== 技术栈 ==================== */
.tech {
    background: var(--darker);
}

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

.tech-content .section-header {
    margin-bottom: 40px;
}

.tech-categories {
    display: grid;
    gap: 24px;
}

.tech-category h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 14px;
}

.tech-category h4 i {
    color: var(--primary);
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-tag {
    padding: 8px 16px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    font-size: 0.85rem;
    color: var(--gray-300);
    transition: all 0.3s ease;
}

.tech-tag:hover {
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(0,212,255,0.2);
}

.tech-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 400px;
}

.orbit-container {
    position: relative;
    width: 300px;
    height: 300px;
}

.orbit-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 110px;
    height: 110px;
    background: var(--gradient);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 50px rgba(0,212,255,0.4);
    z-index: 2;
}

.orbit-center i {
    font-size: 2rem;
    color: var(--dark);
    margin-bottom: 4px;
}

.orbit-center span {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--dark);
}

.orbit-item {
    position: absolute;
    width: 50px;
    height: 50px;
    background: var(--card-bg);
    border: 2px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    color: var(--primary);
    animation: orbit 20s linear infinite;
}

.orbit-item:hover {
    border-color: var(--primary);
    background: var(--gradient-subtle);
}

.item-1 { top: 0; left: 50%; transform: translateX(-50%); animation-delay: 0s; }
.item-2 { top: 50%; right: 0; transform: translateY(-50%); animation-delay: -3s; }
.item-3 { bottom: 0; left: 50%; transform: translateX(-50%); animation-delay: -6s; }
.item-4 { top: 50%; left: 0; transform: translateY(-50%); animation-delay: -9s; }
.item-5 { top: 15%; right: 15%; animation-delay: -12s; }
.item-6 { bottom: 15%; left: 15%; animation-delay: -15s; }

@keyframes orbit {
    0% { transform: rotate(0deg) translateX(0) translateY(0); }
    25% { transform: rotate(90deg) translateX(130px) translateY(0); }
    50% { transform: rotate(180deg) translateX(130px) translateY(130px); }
    75% { transform: rotate(270deg) translateX(0) translateY(130px); }
    100% { transform: rotate(360deg) translateX(0) translateY(0); }
}

.item-2 { animation-name: orbitAlt1; }
.item-4 { animation-name: orbitAlt1; animation-delay: -10s; }
.item-5 { animation-name: orbitAlt2; }
.item-6 { animation-name: orbitAlt2; animation-delay: -5s; }

@keyframes orbitAlt1 {
    0% { transform: translateY(-50%) rotate(0deg) translateX(0); }
    25% { transform: translateY(-50%) rotate(90deg) translateX(130px); }
    50% { transform: translateY(-50%) rotate(180deg) translateX(0); }
    75% { transform: translateY(-50%) rotate(270deg) translateX(-130px); }
    100% { transform: translateY(-50%) rotate(360deg) translateX(0); }
}

@keyframes orbitAlt2 {
    0% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(130px, -130px) rotate(90deg); }
    50% { transform: translate(130px, 130px) rotate(180deg); }
    75% { transform: translate(-130px, 130px) rotate(270deg); }
    100% { transform: translate(-130px, -130px) rotate(360deg); }
}

/* ==================== 流程步骤 ==================== */
.process {
    background: var(--dark);
}

.process-timeline {
    display: flex;
    align-items: flex-start;
    justify-content: center;
    gap: 0;
}

.process-step {
    flex: 1;
    max-width: 280px;
    text-align: center;
    position: relative;
}

.step-number {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    font-size: 4rem;
    font-weight: 800;
    color: var(--gray-900);
    line-height: 1;
    z-index: 0;
}

.step-content {
    position: relative;
    z-index: 1;
    padding-top: 50px;
}

.step-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.4rem;
    color: var(--dark);
    box-shadow: 0 0 40px rgba(0,212,255,0.3);
}

.step-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 10px;
}

.step-content p {
    font-size: 0.9rem;
    color: var(--gray-400);
}

.process-line {
    flex: 1;
    height: 2px;
    background: var(--gradient);
    margin-top: 32px;
    position: relative;
}

.process-line::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: repeating-linear-gradient(90deg, var(--primary) 0, var(--primary) 8px, transparent 8px, transparent 16px);
}

/* ==================== 客户评价 ==================== */
.testimonials {
    background: var(--darker);
}

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

.testimonial-card {
    padding: 32px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    position: relative;
    transition: all 0.3s ease;
}

.testimonial-card::before {
    content: '"';
    position: absolute;
    top: 20px;
    right: 24px;
    font-size: 5rem;
    font-weight: 800;
    color: var(--card-border);
    line-height: 1;
}

.testimonial-card:hover {
    border-color: rgba(0,212,255,0.3);
    transform: translateY(-4px);
}

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

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 12px;
}

.author-avatar {
    width: 48px;
    height: 48px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--dark);
}

.author-info h5 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 2px;
}

.author-info span {
    font-size: 0.85rem;
    color: var(--gray-400);
}

/* ==================== 团队成员 ==================== */
.team {
    background: var(--dark);
}

.team-grid {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
}

.team-member-card {
    width: 280px;
    padding: 32px 24px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    text-align: center;
    transition: all 0.3s ease;
}

.team-member-card:hover {
    border-color: rgba(0,212,255,0.4);
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.member-avatar-lg {
    width: 100px;
    height: 100px;
    margin: 0 auto 20px;
    overflow: hidden;
    border: 2px solid var(--card-border);
}

.member-avatar-lg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--dark);
}

.team-member-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 4px;
}

.member-role {
    display: block;
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 12px;
}

.team-member-card p {
    font-size: 0.85rem;
    color: var(--gray-400);
    margin-bottom: 16px;
    line-height: 1.6;
}

.member-contact {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.member-contact a {
    width: 36px;
    height: 36px;
    background: var(--gradient-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    text-decoration: none;
    transition: all 0.3s ease;
}

.member-contact a:hover {
    background: var(--gradient);
    color: var(--dark);
}

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

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

.about-content .section-header {
    margin-bottom: 30px;
}

.about-lead {
    font-size: 1.15rem;
    color: var(--gray-300);
    margin-bottom: 20px;
    line-height: 1.8;
}

.about-content > p {
    color: var(--gray-400);
    margin-bottom: 40px;
    line-height: 1.9;
}

.about-features {
    display: grid;
    gap: 20px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 24px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    transition: all 0.3s ease;
}

.feature-item:hover {
    border-color: rgba(0,212,255,0.3);
    transform: translateX(10px);
}

.feature-item i {
    width: 50px;
    height: 50px;
    background: var(--gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--dark);
    flex-shrink: 0;
}

.feature-title {
    display: block;
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 4px;
}

.feature-desc {
    display: block;
    font-size: 0.85rem;
    color: var(--gray-400);
}

.company-info {
    display: flex;
    gap: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--card-border);
}

.info-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.info-item i {
    width: 44px;
    height: 44px;
    background: var(--gradient-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
}

.info-label {
    display: block;
    font-size: 0.8rem;
    color: var(--gray-400);
}

.info-value {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--white);
}

/* ==================== 合作伙伴 ==================== */
.partners {
    background: var(--dark);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.partner-card {
    padding: 40px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

.partner-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.partner-card:hover {
    border-color: rgba(0,212,255,0.4);
    transform: translateY(-6px);
    box-shadow: 0 20px 50px rgba(0,0,0,0.4);
}

.partner-logo {
    height: 80px;
    margin-top: 50px;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 10px rgba(0,212,255,0.3));
}

.partner-logo-lg {
    height: 120px;
    margin-top: 20px;
}

.partner-logo-sm {
    height: 60px;
    margin-top: 50px;
}

.partner-divider {
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(0, 212, 255, 0.5);
    font-size: 1.5rem;
    padding: 0 10px;
}

.partner-card h4 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}

.partner-desc {
    color: var(--gray-400);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.partner-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 20px;
}

.partner-info span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--gray-400);
}

.partner-info i {
    color: var(--primary);
    width: 16px;
}

.partner-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--gradient);
    color: var(--dark);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
}

.partner-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,212,255,0.3);
}

/* ==================== CTA区域 ==================== */
.cta-section {
    background: var(--darker);
    padding: 80px 0;
}

.cta-box {
    position: relative;
    background: var(--gradient);
    padding: 70px 60px;
    text-align: center;
    overflow: hidden;
}

.cta-glow {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255,255,255,0.15) 0%, transparent 50%);
}

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

.cta-content h2 {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 14px;
}

.cta-content p {
    font-size: 1.05rem;
    color: rgba(0,0,0,0.7);
    margin-bottom: 36px;
}

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

.cta-btns .btn-primary {
    background: var(--dark);
    color: var(--primary);
    box-shadow: none;
}

.cta-btns .btn-primary:hover {
    background: var(--gray-900);
}

.cta-btns .btn-outline {
    background: transparent;
    border: 2px solid rgba(0,212,255,0.8);
    color: var(--cyan);
}

.cta-btns .btn-outline:hover {
    background: rgba(0,212,255,0.1);
}

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

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 60px;
    align-items: start;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.contact-card {
    padding: 24px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    display: flex;
    gap: 16px;
    transition: all 0.3s ease;
}

.contact-card:hover {
    border-color: rgba(0,212,255,0.3);
    transform: translateY(-3px);
}

.contact-icon {
    width: 52px;
    height: 52px;
    background: var(--gradient-subtle);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary);
    flex-shrink: 0;
}

.contact-icon.wechat {
    background: linear-gradient(135deg, rgba(7,193,96,0.2), rgba(7,193,96,0.1));
    color: #07c160;
}

.contact-detail h4 {
    font-size: 0.85rem;
    color: var(--gray-400);
    font-weight: 500;
    margin-bottom: 4px;
}

.contact-detail p {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--white);
}

.contact-hint {
    display: block;
    font-size: 0.8rem;
    color: var(--gray-600);
    margin-top: 4px;
}

.contact-qr {
    position: sticky;
    top: 100px;
}

.qr-card {
    padding: 36px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    text-align: center;
}

.qr-frame {
    width: 200px;
    height: 200px;
    margin: 0 auto 20px;
    background: var(--white);
    padding: 10px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

.qr-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.qr-info h4 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
}

.qr-info h4 i {
    color: #07c160;
}

.qr-info p {
    color: var(--gray-400);
    font-size: 0.9rem;
}

.qr-features {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--card-border);
}

.qr-features span {
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: 0.8rem;
    color: var(--gray-400);
}

.qr-features span i {
    color: var(--primary);
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--darker);
    padding: 70px 0 30px;
    border-top: 1px solid var(--card-border);
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: 50px;
    margin-bottom: 40px;
}

.footer-brand .footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    margin-bottom: 20px;
}

.footer-brand img {
    height: 36px;
    filter: drop-shadow(0 0 10px rgba(0,212,255,0.3));
}

.footer-brand span {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--white);
}

.footer-brand p {
    color: var(--gray-400);
    font-size: 0.9rem;
    line-height: 1.8;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.social-btn {
    width: 40px;
    height: 40px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    text-decoration: none;
    transition: all 0.3s ease;
}

.social-btn:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--dark);
}

.footer-column h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 20px;
}

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

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

.footer-column a {
    color: var(--gray-400);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: var(--primary);
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 10px;
}

.contact-list i {
    color: var(--primary);
    width: 16px;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--card-border);
}

.footer-copyright p {
    color: var(--gray-600);
    font-size: 0.85rem;
}

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

.footer-filing a {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--gray-600);
    text-decoration: none;
    font-size: 0.8rem;
    transition: color 0.3s ease;
}

.footer-filing a:hover {
    color: var(--gray-400);
}

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

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        max-width: 600px;
    }
    
    .hero-btns {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-extra {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .projects-grid,
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tech-layout {
        grid-template-columns: 1fr;
    }
    
    .tech-visual {
        display: none;
    }
    
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-layout {
        grid-template-columns: 1fr;
        gap: 50px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-qr {
        position: static;
    }
    
    .footer-main {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
    
    .partners-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 68px;
        left: 0;
        right: 0;
        background: var(--dark);
        flex-direction: column;
        padding: 16px;
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
        border-bottom: 1px solid var(--card-border);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu li {
        border-bottom: 1px solid var(--card-border);
    }
    
    .nav-menu a {
        display: block;
        padding: 14px 0;
    }
    
    .nav-cta {
        display: none;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }
    
    .hero {
        padding: 100px 24px 60px;
    }
    
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-btns {
        flex-direction: column;
    }
    
    .stats-grid,
    .services-grid,
    .services-extra,
    .projects-grid,
    .testimonials-grid,
    .team-grid {
        grid-template-columns: 1fr;
    }
    
    .process-timeline {
        flex-direction: column;
        gap: 30px;
    }
    
    .process-line {
        width: 2px;
        height: 40px;
        margin: 0 auto;
    }
    
    .process-line::before {
        top: 0;
        bottom: 0;
        left: 50%;
        width: 1px;
        height: auto;
        background: repeating-linear-gradient(180deg, var(--primary) 0, var(--primary) 8px, transparent 8px, transparent 16px);
    }
    
    .contact-cards {
        grid-template-columns: 1fr;
    }
    
    .cta-box {
        padding: 50px 24px;
    }
    
    .cta-content h2 {
        font-size: 1.6rem;
    }
    
    .cta-btns {
        flex-direction: column;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-social {
        justify-content: center;
    }
    
    .company-info {
        flex-direction: column;
        gap: 20px;
    }
}