* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #6366F1;
    --secondary: #10B981;
    --accent: #F59E0B;
    --danger: #EF4444;
    --dark: #1F2937;
    --gray: #6B7280;
    --light: #F3F4F6;
    --white: #FFFFFF;
    --bg-light: #F9FAFB;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* 屏幕阅读器专用样式 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 表单组样式 */
.form-group {
    width: 100%;
}



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

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

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

.section-title {
    font-size: 36px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.section-desc {
    font-size: 18px;
    color: var(--gray);
}

.section-note {
    font-size: 14px;
    color: var(--gray);
    margin-top: 8px;
    font-weight: 400;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(79, 70, 229, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(79, 70, 229, 0.4);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--white);
    color: var(--primary);
    border: 2px solid var(--primary);
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-large {
    padding: 16px 32px;
    font-size: 18px;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 2px 30px rgba(0, 0, 0, 0.12);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    border-radius: 8px;
}

.logo-text {
    font-size: 22px;
    font-weight: 700;
    color: var(--dark);
}

.nav-list {
    display: flex;
    gap: 40px;
}

.nav-list a {
    font-size: 15px;
    font-weight: 500;
    color: var(--gray);
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-list a.active::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--dark);
    cursor: pointer;
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
    background: linear-gradient(135deg, #0ea5e9 0%, #3b82f6 30%, #6366f1 60%, #8b5cf6 100%);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--white);
    padding: 60px 0;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.25) 0%, rgba(255, 255, 255, 0.1) 100%);
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 24px;
    animation: badgeGlow 2s ease-in-out infinite;
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2);
}

.hero-badge i {
    font-size: 20px;
    color: #07C160;
}

.badge-star {
    color: #FFD700;
    font-size: 18px;
    animation: starPulse 1.5s ease-in-out infinite;
}

@keyframes badgeGlow {
    0%, 100% { 
        box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2);
        border-color: rgba(255, 255, 255, 0.4);
    }
    50% { 
        box-shadow: 0 6px 30px rgba(255, 255, 255, 0.35);
        border-color: rgba(255, 255, 255, 0.7);
    }
}

@keyframes starPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.02); }
}

.hero-title {
    font-size: 72px;
    font-weight: 800;
    margin-bottom: 16px;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 20px;
    opacity: 0.95;
}

.hero-desc {
    font-size: 18px;
    line-height: 1.8;
    opacity: 0.9;
    margin-bottom: 40px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.btn-download-main {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 20px 40px;
    background: linear-gradient(135deg, #FFD700 0%, #FFA500 50%, #FF8C00 100%);
    border: 3px solid rgba(255, 215, 0, 0.5);
    border-radius: 50px;
    font-size: 20px;
    font-weight: 700;
    color: #1a1a2e;
    text-decoration: none;
    box-shadow: 0 8px 30px rgba(255, 140, 0, 0.4);
    transition: all 0.3s ease;
    position: relative;
}

.btn-download-main:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 50px rgba(255, 140, 0, 0.6);
    border-color: rgba(255, 215, 0, 0.9);
}

.btn-download-main i {
    font-size: 24px;
}

.download-badge {
    position: absolute;
    top: -12px;
    right: -12px;
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
    color: white;
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 20px;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.4);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 80px;
}

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

.stat-num {
    display: block;
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 8px;
}

.stat-label {
    font-size: 16px;
    opacity: 0.85;
}

.hero-wave {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    line-height: 0;
}

.hero-wave svg {
    width: 100%;
    height: 120px;
    fill: var(--white);
}

.pain-points {
    padding: 100px 0;
    background: var(--white);
}

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

.pain-item {
    padding: 30px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    border: 1px solid #f0f0f0;
    transition: all 0.3s ease;
}

.pain-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(79, 70, 229, 0.12);
    border-color: var(--primary);
}

.pain-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1) 0%, rgba(99, 102, 241, 0.1) 100%);
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    font-size: 24px;
    color: var(--primary);
}

.pain-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--dark);
}

.pain-item p {
    font-size: 14px;
    color: var(--gray);
    line-height: 1.7;
}

.features {
    padding: 100px 0;
    background: var(--bg-light);
}

.features-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 50px;
    overflow-x: auto;
    padding-bottom: 10px;
    scrollbar-width: thin;
    scrollbar-color: var(--primary) #e5e7eb;
    white-space: nowrap;
    justify-content: flex-start;
}

.features-tabs::-webkit-scrollbar {
    height: 6px;
}

.features-tabs::-webkit-scrollbar-track {
    background: #e5e7eb;
    border-radius: 3px;
}

.features-tabs::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 3px;
}

.tab-btn {
    padding: 12px 24px;
    background: var(--white);
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--gray);
    cursor: pointer;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.tab-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
}

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

.features-content {
    background: var(--white);
    border-radius: 20px;
    padding: 50px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
}

.feature-panel {
    display: none;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.feature-info h3 {
    font-size: 32px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.feature-info > p {
    font-size: 16px;
    color: var(--gray);
    margin-bottom: 30px;
    line-height: 1.8;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 16px;
    color: var(--dark);
}

.feature-list i {
    width: 24px;
    height: 24px;
    background: rgba(16, 185, 129, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary);
    font-size: 12px;
}

.feature-img img {
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    max-width: 100%;
    height: auto;
    object-fit: contain;
}

.advantages {
    padding: 100px 0;
    background: var(--white);
}

.adv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.adv-item {
    text-align: center;
    padding: 40px 30px;
    background: var(--white);
    border-radius: 20px;
    border: 1px solid #f0f0f0;
    transition: all 0.3s ease;
}

.adv-item:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 50px rgba(79, 70, 229, 0.12);
    border-color: transparent;
}

.adv-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 24px;
    font-size: 32px;
    color: var(--white);
}

.adv-item h3 {
    font-size: 20px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 12px;
}

.adv-item p {
    font-size: 15px;
    color: var(--gray);
    line-height: 1.7;
}

.features-all {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-light) 0%, var(--white) 100%);
}

.all-features-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 20px;
}

.af-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px 16px;
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.af-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(79, 70, 229, 0.12);
}

.af-item i {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, rgba(79, 70, 229, 0.1) 0%, rgba(99, 102, 241, 0.1) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--primary);
}

.af-item span {
    font-size: 13px;
    color: var(--dark);
    font-weight: 500;
    text-align: center;
}

.cases {
    padding: 100px 0;
    background: var(--white);
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 30px;
}

.case-item {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: var(--bg-light);
    border-radius: 12px;
    transition: all 0.3s ease;
}

.case-item:hover {
    background: var(--white);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
    transform: translateY(-3px);
}

.about {
    padding: 100px 0;
    background: var(--bg-light);
}

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

.about-info h2 {
    font-size: 36px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 16px;
}

.about-info > p {
    font-size: 18px;
    color: var(--gray);
    margin-bottom: 40px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.about-features .af-item {
    flex-direction: row;
    padding: 20px;
    text-align: left;
}

.about-features .af-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--white);
    flex-shrink: 0;
}

.about-features .af-text h4 {
    font-size: 16px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 4px;
}

.about-features .af-text p {
    font-size: 13px;
    color: var(--gray);
}

.about-img img {
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.1);
}

.contact {
    padding: 100px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
}

.contact .section-title {
    color: var(--white);
}

.contact .section-desc {
    color: rgba(255, 255, 255, 0.85);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
}

.contact-info h3 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    font-size: 16px;
}

.contact-item i {
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.contact-form {
    background: var(--white);
    padding: 40px;
    border-radius: 20px;
}

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

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid #e5e7eb;
    border-radius: 10px;
    font-size: 15px;
    color: var(--dark);
    transition: border-color 0.3s ease;
    margin-bottom: 20px;
}

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

.contact-form textarea {
    resize: vertical;
    min-height: 100px;
}

.contact-form button {
    width: 100%;
}

.download-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
}

.download-wrapper {
    text-align: center;
}

.download-content h2 {
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 16px;
}

.download-content p {
    font-size: 18px;
    opacity: 0.9;
    margin-bottom: 40px;
}

.download-buttons {
    display: flex;
    gap: 24px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-download {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 24px;
    border-radius: 10px;
    text-decoration: none;
    transition: all 0.3s ease;
    min-width: 180px;
    justify-content: center;
    font-size: 15px;
    font-weight: 600;
}

.btn-download i {
    font-size: 20px;
}

.btn-download.btn-primary {
    background: var(--white);
    color: var(--primary);
    box-shadow: 0 4px 20px rgba(255, 255, 255, 0.2);
}

.btn-download.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.3);
}

.btn-download.btn-secondary {
    background: rgba(255, 255, 255, 0.15);
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-download.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-3px);
}

@media (max-width: 768px) {
    .download-content h2 {
        font-size: 28px;
    }
    
    .download-content p {
        font-size: 16px;
    }
    
    .download-buttons {
        flex-direction: row;
        align-items: center;
        gap: 10px;
    }
    
    .btn-download {
        flex: 1;
        min-width: 120px;
        max-width: 160px;
        padding: 10px 16px;
        gap: 8px;
        font-size: 13px;
    }
    
    .btn-download i {
        font-size: 16px;
    }
}

.pricing {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--white) 0%, #f8fafc 100%);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 60px;
}

.pricing-card {
    background: var(--white);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    position: relative;
    border: 2px solid #e2e8f0;
    transition: all 0.3s ease;
}

.pricing-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 50px rgba(79, 70, 229, 0.12);
    border-color: var(--primary);
}

.pricing-card.featured {
    box-shadow: 0 4px 20px rgba(79, 70, 229, 0.1);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 6px 20px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.pricing-header h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.pricing-duration {
    font-size: 14px;
    color: var(--gray);
    margin-bottom: 20px;
}

.pricing-price {
    margin-bottom: 30px;
}

.price-symbol {
    font-size: 28px;
    font-weight: 600;
    color: var(--primary);
}

.price-amount {
    font-size: 56px;
    font-weight: 700;
    color: var(--dark);
}

.price-unit {
    font-size: 18px;
    color: var(--gray);
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin-bottom: 30px;
    text-align: left;
}

.pricing-features li {
    padding: 10px 0;
    font-size: 14px;
    color: var(--gray);
    border-bottom: 1px solid #f1f5f9;
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features i {
    color: #10b981;
    margin-right: 10px;
}

.pricing-card a {
    width: 100%;
    display: inline-block;
    padding: 14px;
    border-radius: 10px;
}

.pricing-card.featured a {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.pricing-indicators {
    display: none;
}

@media (max-width: 1200px) {
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .pricing {
        padding: 60px 0 50px;
    }
    
    .pricing-grid {
        display: flex;
        overflow-x: auto;
        overflow-y: visible;
        scroll-snap-type: x mandatory;
        -webkit-overflow-scrolling: touch;
        gap: 20px;
        padding: 0 5px;
        margin-top: 30px;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    .pricing-grid::-webkit-scrollbar {
        display: none;
    }
    
    .pricing-card {
        flex: 0 0 calc(90vw);
        max-width: 340px;
        min-width: 280px;
        min-height: 560px;
        scroll-snap-align: center;
        padding: 55px 24px 40px;
        border-radius: 16px;
        border: 1px solid #e2e8f0;
        position: relative;
        margin-top: 35px;
    }
    
    .popular-badge {
        font-size: 11px;
        padding: 6px 16px;
        top: -18px;
        left: 50%;
        transform: translateX(-50%);
        position: absolute;
        z-index: 10;
    }
    
    .pricing-header h3 {
        font-size: 22px;
        margin-bottom: 6px;
    }
    
    .pricing-duration {
        font-size: 13px;
        margin-bottom: 16px;
    }
    
    .pricing-price {
        margin-bottom: 22px;
    }
    
    .price-symbol {
        font-size: 24px;
    }
    
    .price-amount {
        font-size: 44px;
    }
    
    .price-unit {
        font-size: 16px;
    }
    
    .pricing-features {
        margin-bottom: 22px;
    }
    
    .pricing-features li {
        font-size: 13px;
        padding: 8px 0;
    }
    
    .pricing-card a {
        padding: 13px;
        font-size: 15px;
        border-radius: 8px;
    }
    
    .pricing-indicators {
        display: flex;
        justify-content: center;
        gap: 15px;
        margin-top: 30px;
        padding: 20px 0;
        position: relative;
        z-index: 1000;
        pointer-events: auto;
        background: transparent;
    }
    
    .indicator-dot {
        width: 16px;
        height: 16px;
        border-radius: 50%;
        background: #94a3b8;
        cursor: pointer;
        transition: all 0.2s ease;
        display: block;
        position: relative;
        z-index: 1001;
        user-select: none;
        -webkit-tap-highlight-color: transparent;
        border: 2px solid #e2e8f0;
        box-sizing: border-box;
    }
    
    .indicator-dot:hover {
        background: #64748b;
        transform: scale(1.2);
        border-color: #94a3b8;
    }
    
    .indicator-dot.active {
        background: #4F46E5;
        transform: scale(1.4);
        border-color: #4F46E5;
        box-shadow: 0 0 12px rgba(79, 70, 229, 0.6);
    }
}

.footer {
    background: var(--dark);
    color: var(--white);
    padding: 80px 0 0;
}

.footer-content {
    display: grid;
    grid-template-columns: 1.8fr 1fr 1fr 1fr;
    gap: 50px;
    padding-bottom: 60px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    align-items: start;
}

.footer-brand {
    padding-top: 0;
}

.footer-columns {
    grid-column: 2 / -1;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 50px;
    word-break: normal;
    white-space: normal;
    writing-mode: horizontal-tb !important;
    text-orientation: mixed !important;
}

.footer-columns * {
    writing-mode: horizontal-tb !important;
    text-orientation: mixed !important;
    white-space: normal !important;
    word-break: normal !important;
}

.footer-service {
    padding: 0;
}

.footer-service h4 {
    line-height: 24px;
    margin-bottom: 24px;
}

.footer-service .service-item {
    margin-bottom: 12px;
}

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

.footer-brand .logo-text {
    color: var(--white);
}

.footer-brand p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    line-height: 1.8;
}

.footer-links {
    padding: 0;
    margin: 0;
}

.footer-links h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 24px;
    line-height: 24px;
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.footer-links a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: var(--white);
}

.qrcode {
    width: 120px;
    height: 120px;
    background: var(--white);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
}

.qrcode img {
    width: 110px;
    height: 110px;
    object-fit: contain;
    border-radius: 8px;
}

.footer-service {
    padding: 0;
}

.footer-service h4 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 24px;
    color: var(--white);
    line-height: 24px;
}

.service-item {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.service-item i {
    font-size: 18px;
    color: #07c160;
    width: 24px;
    text-align: center;
}

.service-item a {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s ease;
    text-decoration: none;
}

.service-item a:hover {
    color: var(--white);
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
}

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

.modal-content {
    background: var(--white);
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    max-width: 360px;
    width: 100%;
    position: relative;
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #999;
    cursor: pointer;
    transition: color 0.3s;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--primary);
}

.modal-content h3 {
    color: #333;
    margin-bottom: 20px;
    font-size: 20px;
}

.modal-qrcode {
    width: 200px;
    height: 200px;
    margin: 0 auto 16px;
    background: #f5f5f5;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-qrcode img {
    width: 180px;
    height: 180px;
    object-fit: contain;
}

.modal-content p {
    color: #666;
    font-size: 14px;
    margin: 0;
}

.footer-qrcode {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.footer-qrcode p {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.6);
    text-align: center;
    margin: 0;
    width: 100%;
}

.footer-bottom {
    text-align: center;
    padding: 24px 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.5);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.7);
    transition: color 0.3s ease;
}

.footer-bottom a:hover {
    color: var(--white);
}

@media (max-width: 1024px) {
    .hero-title {
        font-size: 56px;
    }
    
    .hero-stats {
        gap: 50px;
    }
    
    .pain-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .adv-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .all-features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .about-grid {
        gap: 50px;
    }
    
    .contact-grid {
        gap: 40px;
    }
    
    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-list {
        display: none;
    }
    
    .nav .btn-primary {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .hero-title {
        font-size: 40px;
    }
    
    .hero-subtitle {
        font-size: 22px;
    }
    
    .hero-desc {
        font-size: 16px;
    }
    
    .hero-btns {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: row;
        gap: 20px;
        justify-content: center;
    }
    
    .stat-item {
        flex: 1;
        max-width: 100px;
    }
    
    .stat-num {
        font-size: 28px;
    }
    
    .stat-label {
        font-size: 12px;
    }
    
    .section-title {
        font-size: 28px;
    }
    
    .pain-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .features-tabs {
        gap: 8px;
    }
    
    .tab-btn {
        padding: 10px 16px;
        font-size: 14px;
    }
    
    .features-content {
        padding: 30px 20px;
    }
    
    .feature-panel {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .feature-img {
        order: -1;
    }
    
    .adv-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .all-features-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 12px;
    }
    
    .af-item {
        padding: 16px 10px;
    }
    
    .af-item i {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .af-item span {
        font-size: 11px;
    }
    
    .cases-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .about-features {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
        gap: 30px;
    }
    
    .footer-brand {
        grid-column: 1 / -1;
    }
    
    .footer-columns {
        grid-column: 1 / -1;
        grid-template-columns: 1fr 1fr 1fr;
    }
    
    .footer-links,
    .footer-service {
        grid-column: auto;
    }
    
    .qrcode {
        margin: 0 auto 16px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }
    
    .hero-title {
        font-size: 32px;
    }
    
    .hero-subtitle {
        font-size: 18px;
    }
    
    .all-features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .cases-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        display: block !important;
        padding: 0 5px;
        grid-template-columns: none !important;
    }
    
    .footer-brand {
        width: 100% !important;
        margin-bottom: 15px;
        grid-column: auto !important;
    }
    
    .footer-columns {
        display: flex !important;
        flex-wrap: nowrap !important;
        justify-content: space-between !important;
        align-items: flex-start !important;
        gap: 5px;
        width: 100%;
        white-space: nowrap;
        flex-direction: row !important;
    }
    
    .footer-links,
    .footer-service {
        flex: 1 1 30% !important;
        max-width: 34% !important;
        padding: 0;
        margin: 0;
        grid-column: auto !important;
        white-space: normal;
        word-break: break-all;
        writing-mode: horizontal-tb !important;
        text-orientation: mixed !important;
    }
    
    .footer-links ul,
    .footer-links li,
    .footer-links a,
    .footer-service .service-item,
    .footer-service span {
        writing-mode: horizontal-tb !important;
        text-orientation: mixed !important;
        white-space: normal;
        word-break: break-all;
        display: block;
    }
    
    .footer-links h4,
    .footer-service h4 {
        font-size: 11px;
        margin-bottom: 4px;
        line-height: 14px;
        padding: 0;
    }
    
    .footer-links ul {
        flex-direction: column;
        gap: 2px;
        justify-content: center;
        padding-left: 0;
        margin: 0;
    }
    
    .footer-links li {
        font-size: 9px;
        list-style: none;
        padding: 0;
        margin: 0;
    }
    
    .footer-links li a {
        padding: 0;
        font-size: 9px;
    }
    
    .service-item {
        margin-bottom: 3px;
        justify-content: center;
        gap: 4px;
    }
    
    .service-item i {
        font-size: 12px;
        width: 14px;
    }
    
    .service-item span,
    .service-item a {
        font-size: 9px;
        color: rgba(255, 255, 255, 0.8);
        padding: 0;
    }
    
    .footer-bottom {
        display: block !important;
        text-align: center !important;
        padding: 20px 0 !important;
        line-height: 1.8 !important;
    }
    
    .footer-bottom .copyright-row {
        display: block !important;
        font-size: 12px !important;
        color: rgba(255, 255, 255, 0.6) !important;
        line-height: 1.5 !important;
        margin-bottom: 8px !important;
    }
    
    .footer-bottom .beian-row {
        display: block !important;
        font-size: 10px !important;
        color: rgba(255, 255, 255, 0.5) !important;
        line-height: 1.5 !important;
    }
    
    .footer-bottom .beian-row i {
        font-size: 10px !important;
        color: #4CAF50 !important;
        margin-right: 5px !important;
    }
    
    .footer-bottom .beian-row a {
        color: rgba(255, 255, 255, 0.5) !important;
        text-decoration: none !important;
        margin-right: 10px !important;
    }
    
    .footer-bottom .beian-row a:last-child {
        margin-right: 0 !important;
    }
}

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

@keyframes slideUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.animated {
    opacity: 1;
    transform: translateY(0);
}