/* ===== CSS变量定义 ===== */
:root {
    --primary: #00d4ff;
    --primary-dark: #0099cc;
    --secondary: #7b2dff;
    --accent: #ff2d7b;
    --bg-dark: #0a0e17;
    --bg-card: rgba(15, 23, 42, 0.8);
    --bg-card-hover: rgba(20, 30, 55, 0.9);
    --text-primary: #ffffff;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: rgba(0, 212, 255, 0.2);
    --glow-primary: 0 0 20px rgba(0, 212, 255, 0.5);
    --glow-secondary: 0 0 30px rgba(123, 45, 255, 0.5);
    --gradient-primary: linear-gradient(135deg, var(--primary), var(--secondary));
    --gradient-bg: linear-gradient(180deg, var(--bg-dark) 0%, #0f172a 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Rajdhani', 'Segoe UI', sans-serif;
    background: var(--gradient-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul {
    list-style: none;
}

/* ===== 动态背景网格 ===== */
.cyber-grid {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    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;
}

.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

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

@keyframes particleFloat {
    0%, 100% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 0.6;
    }
    90% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(-100vh) rotate(720deg);
        opacity: 0;
    }
}

/* ===== 渐变文字 ===== */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ===== 导航栏 ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 2rem;
    background: rgba(10, 14, 23, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 0.8rem 2rem;
    background: rgba(10, 14, 23, 0.95);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background-image: url('../images/app_icon.png');
    background-size: contain;
    background-repeat: no-repeat;
    animation: logoGlow 2s ease-in-out infinite;
}

@keyframes logoGlow {
    0%, 100% {
        text-shadow: 0 0 10px var(--primary);
    }
    50% {
        text-shadow: 0 0 30px var(--primary), 0 0 50px var(--primary);
    }
}

.logo-text .highlight {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-links a {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary);
}

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

.nav-actions .btn-nav {
    padding: 0.6rem 1.5rem;
    background: var(--gradient-primary);
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.nav-actions .btn-nav:hover {
    box-shadow: var(--glow-primary);
    transform: translateY(-2px);
}

.mobile-menu {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--primary);
}

/* ===== 主横幅区域 ===== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8rem 2rem 4rem;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.5rem 1.2rem;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 25px;
    font-size: 0.9rem;
    color: var(--primary);
    margin-bottom: 2rem;
}

.hero-badge .pulse {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: badgePulse 1.5s ease-in-out infinite;
}

@keyframes badgePulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(0, 212, 255, 0);
    }
}

.hero-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 4rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.title-line {
    display: block;
}

.hero-subtitle {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-dark);
}

.btn-primary:hover {
    box-shadow: var(--glow-primary), var(--glow-secondary);
    transform: translateY(-3px);
}

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

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-3px);
}

.btn-icon {
    transition: transform 0.3s ease;
}

.btn-primary:hover .btn-icon,
.btn-secondary:hover .btn-icon {
    transform: translateX(5px);
}

.hero-stats {
    display: flex;
    gap: 3rem;
}

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

.stat-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
}

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

.stat-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-top: 0.3rem;
}

/* ===== 主视觉区域 ===== */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.globe-container {
    position: relative;
    width: 450px;
    height: 450px;
}

.globe {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
}

.globe-core {
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 30%, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    color: white;
    box-shadow: 0 0 50px rgba(0, 212, 255, 0.5);
}

.globe-ring {
    position: absolute;
    border: 2px solid var(--primary);
    border-radius: 50%;
    opacity: 0.3;
}

.ring-1 {
    top: -50px;
    left: -50px;
    width: 300px;
    height: 300px;
    animation: ringRotate 10s linear infinite;
}

.ring-2 {
    top: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    animation: ringRotate 15s linear infinite reverse;
}

.ring-3 {
    top: -150px;
    left: -150px;
    width: 500px;
    height: 500px;
    animation: ringRotate 20s linear infinite;
}

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

.connection-lines .line {
    position: absolute;
    background: linear-gradient(90deg, var(--primary), transparent);
    height: 2px;
    animation: lineMove 3s ease-in-out infinite;
}

.line-1 {
    width: 120px;
    top: 50%;
    left: 20%;
    animation-delay: 0s;
}

.line-2 {
    width: 100px;
    top: 30%;
    left: 25%;
    animation-delay: 0.5s;
}

.line-3 {
    width: 140px;
    top: 70%;
    left: 15%;
    animation-delay: 1s;
}

.line-4 {
    width: 110px;
    top: 40%;
    right: 25%;
    animation-delay: 1.5s;
}

.line-5 {
    width: 130px;
    top: 60%;
    right: 20%;
    animation-delay: 2s;
}

@keyframes lineMove {
    0%, 100% {
        opacity: 0.3;
        transform: scaleX(1);
    }
    50% {
        opacity: 1;
        transform: scaleX(1.1);
    }
}

.floating-icons .f-icon {
    position: absolute;
    width: 60px;
    height: 60px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    animation: floatIcon 4s ease-in-out infinite;
}

.f-icon-1 {
    top: 20%;
    left: 10%;
    color: #00aaff;
    animation-delay: 0s;
}

.f-icon-2 {
    top: 60%;
    left: 5%;
    color: #3ddc84;
    animation-delay: 1s;
}

.f-icon-3 {
    top: 40%;
    right: 5%;
    color: #a2aaad;
    animation-delay: 2s;
}

@keyframes floatIcon {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

/* ===== 核心优势区域 ===== */
.features {
    padding: 6rem 2rem;
    position: relative;
    z-index: 1;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    display: inline-block;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.9rem;
    letter-spacing: 3px;
    color: var(--primary);
    margin-bottom: 1rem;
}

.section-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-desc {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto 4rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform 0.4s ease;
}

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

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

.feature-icon {
    position: relative;
    width: 80px;
    height: 80px;
    margin-bottom: 1.5rem;
}

.icon-wrapper {
    width: 100%;
    height: 100%;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--primary);
    position: relative;
    z-index: 1;
}

.icon-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: var(--primary);
    border-radius: 50%;
    filter: blur(30px);
    opacity: 0.5;
    z-index: 0;
}

.feature-speed .icon-wrapper,
.feature-speed .icon-glow {
    color: #ffcc00;
    background: rgba(255, 204, 0, 0.1);
}
.feature-speed .icon-glow {
    background: #ffcc00;
}

.feature-stable .icon-wrapper,
.feature-stable .icon-glow {
    color: #00ff88;
    background: rgba(0, 255, 136, 0.1);
}
.feature-stable .icon-glow {
    background: #00ff88;
}

.feature-secure .icon-wrapper,
.feature-secure .icon-glow {
    color: var(--accent);
    background: rgba(255, 45, 123, 0.1);
}
.feature-secure .icon-glow {
    background: var(--accent);
}

.feature-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.feature-desc {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.feature-stats {
    display: flex;
    gap: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.mini-stat {
    display: flex;
    flex-direction: column;
}

.ms-value {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary);
}

.ms-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.feature-decoration {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 100px;
    height: 100px;
    overflow: hidden;
}

.deco-line {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 150px;
    height: 150px;
    border-right: 2px solid var(--border-color);
    border-bottom: 2px solid var(--border-color);
    border-radius: 0 0 20px 0;
}

.deco-dot {
    position: absolute;
    bottom: 10px;
    right: 10px;
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
    animation: dotPulse 2s ease-in-out infinite;
}

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

/* ===== 技术特性展示 ===== */
.tech-showcase {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1.5rem;
    max-width: 1000px;
    margin: 0 auto;
}

.tech-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    transition: all 0.3s ease;
}

.tech-item:hover {
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: var(--glow-primary);
}

.tech-icon {
    width: 35px;
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--primary);
}

.tech-name {
    font-weight: 500;
    color: var(--text-secondary);
}

/* ===== 下载区域 ===== */
.download {
    padding: 6rem 2rem;
    position: relative;
    z-index: 1;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto 4rem;
}

.download-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all 0.4s ease;
    z-index: 1;
}

.download-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, rgba(0, 212, 255, 0.05) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s ease;
    pointer-events: none;
    z-index: 0;
}

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

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

.platform-badge {
    width: 100px;
    height: 100px;
    margin: 0 auto 1.5rem;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    position: relative;
}

.platform-badge::after {
    content: '';
    position: absolute;
    inset: -5px;
    border: 2px dashed var(--border-color);
    border-radius: 30px;
    animation: badgeRotate 10s linear infinite;
}

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

[data-platform="windows"] .platform-badge {
    color: #00aaff;
}

[data-platform="android"] .platform-badge {
    color: #3ddc84;
}

[data-platform="ios"] .platform-badge {
    color: #a2aaad;
}

.platform-name {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.platform-version {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.platform-features {
    text-align: left;
    margin-bottom: 2rem;
}

.platform-features li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    color: var(--text-secondary);
}

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

.download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    width: 100%;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    position: relative;
    z-index: 10;
}

.windows-btn {
    background: linear-gradient(135deg, #00aaff, #0066cc);
    color: white;
}

.android-btn {
    background: linear-gradient(135deg, #3ddc84, #00c853);
    color: white;
}

.ios-btn {
    background: linear-gradient(135deg, #a2aaad, #6b6b6b);
    color: white;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.download-note {
    margin-top: 1rem;
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ===== 二维码区域 ===== */
.qr-section {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    text-align: center;
}

.qr-info h4 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.qr-info p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.qr-codes {
    display: flex;
    justify-content: center;
    gap: 3rem;
}

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

.qr-placeholder {
    width: 150px;
    height: 150px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    color: var(--bg-dark);
    font-size: 0.9rem;
}

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

/* ===== 关于我们 ===== */
.about {
    padding: 6rem 2rem;
    position: relative;
    z-index: 1;
}

.about-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

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

.about-desc {
    color: var(--text-secondary);
    line-height: 2;
    margin-bottom: 2rem;
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem;
    background: var(--bg-card);
    border-radius: 10px;
}

.about-feature i {
    color: var(--primary);
    font-size: 1.2rem;
}

.about-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

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

.shield-outer {
    position: absolute;
    inset: 0;
    border: 3px solid var(--primary);
    border-radius: 50%;
    animation: shieldRotate 8s linear infinite;
}

.shield-outer::before {
    content: '';
    position: absolute;
    inset: 15px;
    border: 2px dashed var(--secondary);
    border-radius: 50%;
    animation: shieldRotate 6s linear infinite reverse;
}

.shield-inner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background-image: url('../../clients/flutter/assets/icons/app_icon.png');
    background-size: contain;
    background-repeat: no-repeat;
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.8));
}

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

.shield-particles .sp {
    position: absolute;
    width: 10px;
    height: 10px;
    background: var(--primary);
    border-radius: 50%;
    animation: shieldParticle 3s ease-in-out infinite;
}

.sp-1 {
    top: 10%;
    left: 50%;
    animation-delay: 0s;
}

.sp-2 {
    top: 50%;
    right: 10%;
    animation-delay: 0.75s;
}

.sp-3 {
    bottom: 10%;
    left: 50%;
    animation-delay: 1.5s;
}

.sp-4 {
    top: 50%;
    left: 10%;
    animation-delay: 2.25s;
}

@keyframes shieldParticle {
    0%, 100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(2);
        opacity: 1;
    }
}

/* ===== 联系客服 ===== */
.contact {
    padding: 6rem 2rem;
    position: relative;
    z-index: 1;
}

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

.contact-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 4rem;
}

.contact-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2.5rem;
    text-align: center;
    transition: all 0.4s ease;
}

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

.contact-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    position: relative;
}

.qq-card .contact-icon {
    color: #12b7f5;
}

.email-card .contact-icon {
    color: var(--primary);
}

.wechat-card .contact-icon {
    color: #07c160;
}

.contact-card h4 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.contact-number {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.contact-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 0.8rem 1.5rem;
    border-radius: 25px;
    font-weight: 600;
    transition: all 0.3s ease;
}

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

.qq-btn:hover {
    background: #0fa3d8;
    box-shadow: 0 0 20px rgba(18, 183, 245, 0.5);
}

.email-btn {
    background: var(--gradient-primary);
    color: white;
}

.email-btn:hover {
    box-shadow: var(--glow-primary);
}

.contact-hours {
    margin-top: 1.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.contact-hours i {
    color: var(--primary);
    margin-right: 0.5rem;
}

.wechat-qr {
    width: 120px;
    height: 120px;
    margin: 0 auto 1rem;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    color: var(--bg-dark);
}

.wechat-qr i {
    font-size: 2.5rem;
}

.contact-cta {
    background: linear-gradient(135deg, rgba(0, 212, 255, 0.1), rgba(123, 45, 255, 0.1));
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
}

.cta-content h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.cta-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.cta-number {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    padding: 1rem 2rem;
    background: var(--bg-card);
    border-radius: 50px;
    font-size: 1.2rem;
    color: var(--primary);
}

/* ===== 页脚 ===== */
.footer {
    padding: 4rem 2rem 2rem;
    background: var(--bg-card);
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    margin-bottom: 3rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-tagline {
    color: var(--text-secondary);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.footer-column h5 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.footer-column ul li {
    margin-bottom: 0.8rem;
}

.footer-column ul a {
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

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

.footer-social {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.3s ease;
}

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

/* ===== 弹窗 ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal-overlay.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    max-width: 400px;
    animation: modalSlide 0.3s ease;
}

@keyframes modalSlide {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: var(--primary);
}

.modal-content h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.modal-content p {
    color: var(--primary);
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

.modal-desc {
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 2rem !important;
    font-family: 'Rajdhani', sans-serif !important;
    font-size: 1rem !important;
}

.modal-close {
    padding: 0.8rem 2rem;
    background: var(--gradient-primary);
    border: none;
    border-radius: 25px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-close:hover {
    box-shadow: var(--glow-primary);
    transform: translateY(-2px);
}

/* ===== 响应式设计 ===== */
@media (max-width: 1024px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 6rem;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        margin-top: 3rem;
    }
    
    .globe-container {
        width: 350px;
        height: 350px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        max-width: 500px;
    }
    
    .download-grid {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .about-text .section-title {
        text-align: center;
    }
    
    .about-features {
        justify-content: center;
    }
    
    .contact-methods {
        grid-template-columns: 1fr;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .nav-actions {
        display: none;
    }
    
    .mobile-menu {
        display: block;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .globe-container {
        width: 280px;
        height: 280px;
    }
    
    .qr-codes {
        flex-direction: column;
        gap: 2rem;
    }
}