/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Logo色系：深红色和深炭灰色 */
    --primary-red: #A00D25;
    --primary-red-dark: #7A0A1C;
    --primary-red-light: #C8102E;
    --accent-orange: #D97706;
    --accent-orange-light: #F59E0B;
    --text-dark: #282828;
    --text-gray: #666666;
    --text-light: #999999;
    --bg-light: #F8F8F8;
    --bg-white: #FFFFFF;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.15);
}

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

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-dark);
}

.section-subtitle {
    font-size: 1.2rem;
    text-align: center;
    color: var(--text-gray);
    margin-bottom: 3rem;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-red);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-menu a:hover {
    color: var(--primary-red);
}

.nav-cta-btn {
    background: var(--accent-orange);
    color: white !important;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.nav-cta-btn:hover {
    background: var(--accent-orange-light);
    transform: translateY(-2px);
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    transition: all 0.3s ease;
}

/* 第1屏：英雄区域 */
.hero-section {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--primary-red-dark) 100%);
    overflow: hidden;
}

.hero-video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 800"><rect fill="%23C8102E" width="1200" height="800"/><circle fill="%23A00D25" cx="200" cy="200" r="100" opacity="0.3"/><circle fill="%23A00D25" cx="1000" cy="600" r="150" opacity="0.2"/></svg>') center/cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: white;
    padding: 0 20px;
    max-width: 900px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 400;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.2s both;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 50px;
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease 0.4s both;
}

.cta-button.primary {
    background: var(--accent-orange);
    color: white;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.4);
}

.cta-button.primary:hover {
    background: var(--accent-orange-light);
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 107, 53, 0.5);
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: white;
    opacity: 0.8;
    animation: bounce 2s infinite;
}

.scroll-indicator span {
    display: block;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.arrow-down {
    width: 20px;
    height: 20px;
    border-right: 2px solid white;
    border-bottom: 2px solid white;
    transform: rotate(45deg);
    margin: 0 auto;
}

/* 第2屏：痛点戳穿 */
.problem-section {
    padding: 100px 0;
    background: var(--bg-white);
}

.problem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
    margin-top: 4rem;
}

.problem-card {
    text-align: center;
    padding: 2.5rem;
    background: var(--bg-light);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.problem-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.problem-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
}

.problem-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--primary-red);
}

.problem-card p {
    color: var(--text-gray);
    line-height: 1.8;
}

/* 第3屏：解决方案 */
.solution-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.solution-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.solution-label {
    display: inline-block;
    background: var(--primary-red);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.solution-description {
    font-size: 1.1rem;
    color: var(--text-gray);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.solution-list {
    list-style: none;
    font-size: 1.1rem;
    line-height: 2.5;
    color: var(--text-dark);
}

.solution-list li {
    margin-bottom: 0.5rem;
}

.comparison-animation {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.comparison-item {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    text-align: center;
}

.mode-label {
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.mode-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.money-bag, .monthly-fee {
    font-size: 3rem;
    animation: float 3s ease-in-out infinite;
}

.hardware-box {
    font-size: 3rem;
}

.services-group {
    display: flex;
    gap: 0.5rem;
}

.service-icon {
    font-size: 2rem;
    animation: rotate 4s linear infinite;
}

.service-icon:nth-child(2) {
    animation-delay: 1s;
}

.service-icon:nth-child(3) {
    animation-delay: 2s;
}

.arrow {
    font-size: 2rem;
    color: var(--primary-red);
}

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

.savings-badge {
    margin-top: 1rem;
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
    padding: 0.5rem 1.5rem;
    border-radius: 25px;
    font-weight: 700;
    display: inline-block;
}

/* 第4屏：核心场景 */
.scenarios-section {
    padding: 100px 0;
    background: var(--bg-white);
}

.scenarios-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
}

.tab-btn {
    padding: 1rem 2rem;
    background: var(--bg-light);
    border: 2px solid transparent;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    color: var(--text-dark);
}

.tab-btn.active,
.tab-btn:hover {
    background: var(--primary-red);
    color: white;
    border-color: var(--primary-red);
}

.scenarios-content {
    position: relative;
    min-height: 500px;
}

.scenario-panel {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.scenario-panel.active {
    display: grid;
    animation: fadeIn 0.5s ease;
}

.scenario-visual {
    position: relative;
}

/* 门禁设备样式 */
.gate-device-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 500px;
    background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
    border-radius: 20px;
    padding: 3rem;
    position: relative;
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.1);
}

.gate-device {
    width: 300px;
    height: 520px;
    background: linear-gradient(135deg, #9ca3af 0%, #6b7280 100%);
    border-radius: 12px;
    position: relative;
    box-shadow: 
        0 15px 50px rgba(0, 0, 0, 0.25),
        inset 0 0 30px rgba(0, 0, 0, 0.15);
    border: 3px solid #4b5563;
}

.gate-top-lights {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    position: relative;
}

.gate-light {
    width: 50px;
    height: 5px;
    background: #3B82F6;
    border-radius: 3px;
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.9), 0 0 30px rgba(59, 130, 246, 0.5);
    animation: glow 2s ease-in-out infinite;
}

.gate-light.right {
    animation-delay: 1s;
}

.gate-camera {
    width: 12px;
    height: 12px;
    background: #1a1a1a;
    border-radius: 50%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 18px;
}

.gate-screen {
    width: 85%;
    height: 220px;
    margin: 25px auto;
    background: linear-gradient(135deg, #ffffff 0%, #f9fafb 100%);
    border: 3px solid #e5e7eb;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.1);
}

.gate-face-image {
    width: 130px;
    height: 160px;
    background: linear-gradient(135deg, #ffffff 0%, #f3f4f6 100%);
    border: 2px solid #d1d5db;
    border-radius: 6px;
    position: relative;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.gate-face-image::before {
    content: '';
    position: absolute;
    top: 18%;
    left: 50%;
    transform: translateX(-50%);
    width: 65px;
    height: 65px;
    background: linear-gradient(135deg, #9ca3af 0%, #6b7280 100%);
    border-radius: 50%;
    border: 2px solid #d1d5db;
}

.gate-face-image::after {
    content: '';
    position: absolute;
    bottom: 12%;
    left: 50%;
    transform: translateX(-50%);
    width: 85px;
    height: 45px;
    background: linear-gradient(135deg, #9ca3af 0%, #6b7280 100%);
    border-radius: 0 0 45px 45px;
    border: 2px solid #d1d5db;
    border-top: none;
}

.gate-icons {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin: 15px 0;
}

.gate-icon {
    width: 30px;
    height: 30px;
    background: #4a5568;
    border-radius: 5px;
    position: relative;
}

.nfc-icon::after {
    content: '📱';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 16px;
}

.qr-icon::after {
    content: '▦';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 20px;
    color: #1a1a1a;
}

.gate-button {
    width: 70px;
    height: 70px;
    margin: 25px auto;
    background: linear-gradient(135deg, #ffffff 0%, #f3f4f6 100%);
    border: 3px solid #d1d5db;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.6), 0 0 40px rgba(59, 130, 246, 0.3);
    cursor: pointer;
    transition: all 0.3s ease;
}

.gate-button:hover {
    box-shadow: 0 0 30px rgba(59, 130, 246, 0.9), 0 0 60px rgba(59, 130, 246, 0.5);
    transform: scale(1.05);
}

.gate-button-icon {
    color: #3B82F6;
    font-size: 28px;
    font-weight: bold;
    text-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
}

.gate-bottom-light {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 10px;
    background: linear-gradient(90deg, transparent, #3B82F6, transparent);
    box-shadow: 0 -8px 30px rgba(59, 130, 246, 0.7), 0 -4px 15px rgba(59, 130, 246, 0.5);
    animation: glow 2s ease-in-out infinite;
}

/* 停车设备样式 */
.parking-device-container {
    position: relative;
    min-height: 500px;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    border-radius: 20px;
    padding: 3rem;
    overflow: hidden;
}

.parking-rain-effect {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255, 255, 255, 0.03) 2px, rgba(255, 255, 255, 0.03) 4px),
        repeating-linear-gradient(90deg, transparent, transparent 2px, rgba(255, 255, 255, 0.03) 2px, rgba(255, 255, 255, 0.03) 4px);
    pointer-events: none;
    animation: rain 0.5s linear infinite;
}

.parking-device {
    width: 320px;
    height: 580px;
    margin: 0 auto;
    background: linear-gradient(135deg, #475569 0%, #334155 50%, #1e293b 100%);
    border-radius: 15px;
    position: relative;
    box-shadow: 
        0 0 40px rgba(59, 130, 246, 0.8),
        0 0 80px rgba(59, 130, 246, 0.5),
        0 0 120px rgba(59, 130, 246, 0.3),
        inset 0 0 40px rgba(0, 0, 0, 0.6);
    border: 3px solid rgba(59, 130, 246, 0.4);
}

.parking-camera-top {
    width: 100%;
    height: 80px;
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    border-radius: 20px 20px 0 0;
    position: relative;
}

.parking-camera-top::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 40px;
    background: #1a1a1a;
    border-radius: 0 0 20px 20px;
}

.parking-screen {
    width: 88%;
    height: 320px;
    margin: 35px auto;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #020617 100%);
    border: 4px solid rgba(59, 130, 246, 0.6);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 
        inset 0 0 40px rgba(59, 130, 246, 0.4),
        0 0 30px rgba(59, 130, 246, 0.6),
        0 0 60px rgba(59, 130, 246, 0.3);
}

.parking-display-content {
    text-align: center;
    color: #60A5FA;
    text-shadow: 
        0 0 15px rgba(59, 130, 246, 0.9),
        0 0 30px rgba(59, 130, 246, 0.6),
        0 0 45px rgba(59, 130, 246, 0.3);
}

.parking-time {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 25px;
    font-family: 'Courier New', monospace;
    color: #93C5FD;
}

.parking-status {
    font-size: 1.4rem;
    margin-bottom: 35px;
    opacity: 0.95;
    color: #60A5FA;
}

.parking-p {
    font-size: 5rem;
    font-weight: 900;
    opacity: 0.85;
    color: #3B82F6;
}

.parking-blue-lights {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 20px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        #3B82F6 5%, 
        #60A5FA 20%, 
        #93C5FD 35%,
        #3B82F6 50%, 
        #93C5FD 65%,
        #60A5FA 80%, 
        #3B82F6 95%, 
        transparent 100%
    );
    box-shadow: 
        0 -15px 60px rgba(59, 130, 246, 0.9),
        0 -8px 30px rgba(59, 130, 246, 0.7),
        0 -4px 15px rgba(59, 130, 246, 0.5);
    animation: glow 2s ease-in-out infinite;
    border-radius: 0 0 12px 12px;
}

.scenario-text h3 {
    font-size: 2rem;
    color: var(--primary-red);
    margin-bottom: 1.5rem;
}

.scenario-description {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.feature-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.feature-list li {
    font-size: 1rem;
    color: var(--text-dark);
    padding: 0.8rem 0;
    border-bottom: 1px solid #eee;
}

.feature-list li:last-child {
    border-bottom: none;
}

@keyframes glow {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.6;
    }
}

@keyframes rain {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 20px 20px;
    }
}

/* 第5屏：核心优势 */
.advantages-section {
    padding: 100px 0;
    background: var(--primary-red);
    position: relative;
    overflow: hidden;
}

.advantages-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        polygon(0% 0%, 100% 0%, 90% 20%, 0% 30%),
        polygon(10% 40%, 100% 50%, 80% 70%, 0% 60%),
        polygon(20% 80%, 100% 90%, 70% 100%, 0% 100%);
    background-size: 400px 400px;
    opacity: 0.15;
    animation: geometricMove 30s linear infinite;
}

.advantages-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.06) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.04) 0%, transparent 50%);
    pointer-events: none;
}

.neural-network-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.3;
    z-index: 1;
    pointer-events: none;
}

.neural-lines {
    width: 100%;
    height: 100%;
}

.neural-node {
    animation: neuralPulse 3s ease-in-out infinite;
}

.neural-node:nth-child(2) { animation-delay: 0.3s; }
.neural-node:nth-child(3) { animation-delay: 0.6s; }
.neural-node:nth-child(4) { animation-delay: 0.9s; }
.neural-node:nth-child(5) { animation-delay: 1.2s; }
.neural-node:nth-child(6) { animation-delay: 1.5s; }
.neural-node:nth-child(7) { animation-delay: 1.8s; }
.neural-node:nth-child(8) { animation-delay: 2.1s; }
.neural-node:nth-child(9) { animation-delay: 2.4s; }

.advantages-section .section-title.white-text,
.advantages-section .section-subtitle.white-text {
    color: white;
    position: relative;
    z-index: 2;
}

.advantages-grid-red {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
    margin: 4rem 0;
    position: relative;
    z-index: 2;
}

.advantage-card-red {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(15px);
    padding: 2.5rem;
    border-radius: 15px;
    transition: all 0.3s ease;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    z-index: 3;
}

.advantage-card-red:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    background: rgba(255, 255, 255, 0.95);
}

.advantage-icon-square {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    font-weight: bold;
}

.blue-bg {
    background: #3B82F6;
}

.purple-bg {
    background: #8B5CF6;
}

.green-bg {
    background: #10B981;
}

.orange-bg {
    background: #F59E0B;
}

.icon-pattern {
    font-size: 2.5rem;
    line-height: 1;
}

.icon-link {
    font-size: 2.5rem;
    line-height: 1;
}

.icon-server {
    font-size: 2rem;
    letter-spacing: -0.2em;
}

.icon-puzzle {
    font-size: 2.5rem;
}

.advantage-card-red h3 {
    font-size: 1.3rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
    font-weight: 700;
}

.advantage-card-red p {
    color: var(--text-gray);
    line-height: 1.8;
    font-size: 0.95rem;
}

.platform-slogan {
    text-align: center;
    color: white;
    font-size: 1.3rem;
    font-weight: 500;
    margin-top: 4rem;
    position: relative;
    z-index: 2;
    padding: 0 2rem;
}

.platform-slogan p {
    margin: 0;
    line-height: 1.6;
}

@keyframes neuralFlow {
    0% {
        background-position: 0 0, 0 0;
    }
    100% {
        background-position: 200px 200px, -200px 200px;
    }
}

@keyframes neuralPulse {
    0%, 100% {
        opacity: 0.6;
        r: 4;
    }
    50% {
        opacity: 1;
        r: 6;
    }
}

@keyframes geometricMove {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 400px 400px;
    }
}

/* 第6屏：ROI计算器 */
.roi-section {
    padding: 100px 0;
    background: var(--bg-white);
}

.roi-calculator {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-light);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.calculator-inputs {
    margin-bottom: 3rem;
}

.input-group {
    margin-bottom: 2rem;
}

.input-group label {
    display: block;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.calculator-input {
    width: 100%;
    padding: 1rem;
    font-size: 1.2rem;
    border: 2px solid #ddd;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.calculator-input:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.1);
}

.input-unit {
    margin-left: 0.5rem;
    color: var(--text-gray);
}

.slider-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.slider {
    flex: 1;
    height: 8px;
    border-radius: 5px;
    background: #ddd;
    outline: none;
    -webkit-appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-red);
    cursor: pointer;
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary-red);
    cursor: pointer;
    border: none;
}

.slider-value {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-red);
    min-width: 80px;
}

.calculator-results {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    margin-bottom: 2rem;
}

.result-item {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid #eee;
}

.result-item:last-child {
    border-bottom: none;
}

.result-item.highlight {
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
    padding: 1.5rem;
    border-radius: 10px;
    margin: 1rem 0;
    border: none;
}

.result-label {
    font-size: 1.1rem;
    color: var(--text-gray);
}

.result-item.highlight .result-label {
    color: white;
}

.result-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-red);
}

.result-item.highlight .result-value {
    font-size: 3rem;
    color: white;
}

.result-value.savings {
    color: white;
}

.result-unit {
    margin-left: 0.5rem;
    font-size: 1.1rem;
    color: var(--text-gray);
}

.result-item.highlight .result-unit {
    color: white;
}

/* 第7屏：服务承诺 */
.service-section {
    padding: 100px 0;
    background: var(--bg-light);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
}

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

.service-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-size: 1.3rem;
    color: var(--primary-red);
}

/* 第8屏：关于我们 */
.about-section {
    padding: 100px 0;
    background: var(--bg-white);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
}

.about-visual {
    text-align: center;
}

.company-logo-large {
    font-size: 8rem;
    font-weight: 900;
    color: var(--primary-red);
    opacity: 0.2;
}

/* 第9屏：最终行动号召 */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--primary-red-dark) 100%);
    color: white;
}

.cta-section .section-title,
.cta-section .section-subtitle {
    color: white;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: var(--shadow-hover);
}

.form-row {
    margin-bottom: 1.5rem;
}

.contact-form input,
.contact-form select {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
    border: 2px solid #ddd;
    border-radius: 10px;
    transition: all 0.3s ease;
    font-family: inherit;
}

.contact-form input:focus,
.contact-form select:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(200, 16, 46, 0.1);
}

.contact-form button {
    width: 100%;
    margin-top: 1rem;
}

/* 页脚 */
.footer {
    background: var(--text-dark);
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-logo {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-red);
}

.footer-info p {
    margin-bottom: 0.5rem;
    color: #ccc;
}

.footer-info a {
    color: var(--accent-orange);
    text-decoration: none;
}

.footer-info a:hover {
    text-decoration: underline;
}

.footer-links {
    text-align: center;
    padding: 1.5rem 0;
    border-top: 1px solid #333;
    border-bottom: 1px solid #333;
    margin-bottom: 1rem;
}

.footer-links a {
    color: #ccc;
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--accent-orange);
    text-decoration: underline;
}

.link-separator {
    color: #666;
    margin: 0 1rem;
}

.footer-copyright {
    text-align: center;
    padding-top: 1rem;
    color: #999;
}

/* 动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

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

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* 响应式设计 */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .solution-content,
    .scenario-panel,
    .about-content {
        grid-template-columns: 1fr;
    }

    .network-node {
        position: static;
        margin: 1rem auto;
    }

    .neural-network {
        height: auto;
    }

    .network-node.center {
        position: relative;
        left: auto;
        top: auto;
        transform: none;
        margin: 2rem auto;
    }

    .advantages-grid-red {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
    }

    .gate-device-container,
    .parking-device-container {
        min-height: 400px;
        padding: 2rem;
    }

    .gate-device {
        width: 220px;
        height: 480px;
    }

    .parking-device {
        width: 240px;
        height: 440px;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .problem-grid,
    .advantages-grid,
    .service-grid {
        grid-template-columns: 1fr;
    }

    .roi-calculator {
        padding: 2rem 1.5rem;
    }

    .result-value {
        font-size: 1.5rem;
    }

    .result-item.highlight .result-value {
        font-size: 2rem;
    }
}