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

:root {
    --primary-color: #ff6b35;
    --secondary-color: #ff8c42;
    --accent-color: #fff3e6;
    --text-dark: #333;
    --text-light: #666;
    --white: #fff;
    --shadow: 0 4px 20px rgba(0,0,0,0.1);
    --shadow-hover: 0 8px 30px rgba(0,0,0,0.15);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--white);
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0,0,0,0.1);
    z-index: 1000;
    padding: 15px 0;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    padding: 10px 0;
}

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

.logo {
    font-size: 28px;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    width: 45px;
    height: 45px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

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

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s;
}

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

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

.nav-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 12px 30px;
    border: none;
    border-radius: 25px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.nav-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(255,107,53,0.4);
}

.hero {
    padding: 150px 0 100px;
    background: linear-gradient(180deg, #fff9f5 0%, var(--white) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(255,107,53,0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-text h1 {
    font-size: 52px;
    line-height: 1.2;
    margin-bottom: 25px;
    background: linear-gradient(135deg, var(--text-dark) 0%, var(--primary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 20px;
    color: var(--text-light);
    margin-bottom: 35px;
    line-height: 1.8;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-bottom: 40px;
}

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

.stat-number {
    font-size: 36px;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-label {
    font-size: 14px;
    color: var(--text-light);
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 18px 40px;
    border: none;
    border-radius: 30px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 10px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255,107,53,0.4);
}

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    padding: 18px 40px;
    border: 2px solid var(--primary-color);
    border-radius: 30px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-secondary:hover {
    background: var(--accent-color);
    transform: translateY(-3px);
}

.hero-visual {
    position: relative;
}

.hero-image {
    max-width: 100%;
    height: auto;
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: contain;
    border-radius: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.phone-mockup {
    width: 300px;
    height: 600px;
    background: linear-gradient(145deg, #2d3436 0%, #636e72 100%);
    border-radius: 40px;
    padding: 15px;
    box-shadow: 0 50px 100px rgba(0,0,0,0.2);
    position: relative;
    margin: 0 auto;
    animation: float 3s ease-in-out infinite;
}

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

.phone-screen {
    width: 100%;
    height: 100%;
    background: var(--white);
    border-radius: 30px;
    overflow: hidden;
    padding: 20px;
}

.phone-header {
    background: var(--primary-color);
    color: white;
    padding: 15px;
    border-radius: 20px;
    margin-bottom: 15px;
    text-align: center;
}

.phone-task {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 15px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.task-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
}

.task-info h4 {
    font-size: 14px;
    margin-bottom: 5px;
}

.task-reward {
    color: var(--primary-color);
    font-weight: bold;
    font-size: 16px;
}

.floating-cards {
    position: absolute;
    top: 20%;
    left: -50px;
    background: white;
    padding: 15px 25px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    animation: cardFloat 2s ease-in-out infinite;
}

.floating-cards:nth-child(2) {
    top: 60%;
    right: -50px;
    left: auto;
    animation-delay: 0.5s;
}

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

.floating-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #4CAF50, #8BC34A);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 8px;
}

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

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

.section-header h2 {
    font-size: 42px;
    margin-bottom: 20px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-header p {
    font-size: 18px;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

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

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

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

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 36px;
    color: white;
    transition: transform 0.3s;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.7;
}

.process {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff9f5 0%, var(--white) 100%);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    position: relative;
}

.process-steps::before {
    content: '';
    position: absolute;
    top: 50px;
    left: 15%;
    right: 15%;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color), var(--primary-color));
    z-index: 0;
}

.process-step {
    text-align: center;
    position: relative;
    z-index: 1;
}

.step-number {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    font-size: 42px;
    font-weight: bold;
    color: white;
    box-shadow: 0 10px 30px rgba(255,107,53,0.3);
    transition: transform 0.3s;
}

.process-step:hover .step-number {
    transform: scale(1.1);
}

.process-step h3 {
    font-size: 24px;
    margin-bottom: 15px;
}

.process-step p {
    color: var(--text-light);
    font-size: 16px;
    line-height: 1.7;
}

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

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

.task-card {
    background: var(--white);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--shadow);
    border: 1px solid #f0f0f0;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.task-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.task-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.task-logo {
    width: 60px;
    height: 60px;
    background: #f8f9fa;
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.task-badge {
    background: #fff3e6;
    color: var(--primary-color);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

.task-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.task-card p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 20px;
    line-height: 1.6;
}

.task-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid #f0f0f0;
}

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

.task-price span {
    font-size: 14px;
    color: var(--text-light);
    font-weight: normal;
}

.task-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 12px 25px;
    border: none;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.task-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(255,107,53,0.4);
}

.stats {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 40px;
    text-align: center;
}

.stat-box h3 {
    font-size: 48px;
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.stat-box p {
    font-size: 16px;
    opacity: 0.9;
}

.testimonials {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff9f5 0%, var(--white) 100%);
}

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

.testimonial-card {
    background: var(--white);
    padding: 35px;
    border-radius: 20px;
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.testimonial-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.avatar {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    font-weight: bold;
}

.testimonial-info h4 {
    font-size: 18px;
    margin-bottom: 5px;
}

.stars {
    color: #ffc107;
    font-size: 16px;
}

.testimonial-card p {
    color: var(--text-light);
    line-height: 1.8;
    font-style: italic;
}

.income-highlight {
    background: #fff3e6;
    color: var(--primary-color);
    padding: 10px 15px;
    border-radius: 10px;
    margin-top: 15px;
    font-weight: 600;
    display: inline-block;
}

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

.download-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.download-text h2 {
    font-size: 42px;
    margin-bottom: 25px;
}

.download-text p {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 35px;
    line-height: 1.8;
}

.download-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 40px;
}

.download-feature {
    display: flex;
    align-items: center;
    gap: 12px;
}

.download-feature-icon {
    width: 45px;
    height: 45px;
    background: var(--accent-color);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: 20px;
}

.download-buttons {
    display: flex;
    gap: 20px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--text-dark);
    color: white;
    padding: 15px 30px;
    border-radius: 15px;
    text-decoration: none;
    transition: all 0.3s;
}

.download-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.download-btn.apple {
    background: linear-gradient(135deg, #333 0%, #555 100%);
}

.download-btn.android {
    background: linear-gradient(135deg, #4CAF50 0%, #8BC34A 100%);
}

.download-btn-text {
    text-align: left;
}

.download-btn-text span {
    display: block;
    font-size: 12px;
    opacity: 0.8;
}

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

.download-qr {
    width: 250px;
    height: 250px;
    background: var(--white);
    border-radius: 20px;
    padding: 20px;
    box-shadow: var(--shadow);
    margin: 0 auto 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: var(--text-light);
    border: 2px dashed var(--primary-color);
}

.scan-hint {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 15px 30px;
    border-radius: 30px;
    display: inline-block;
    font-weight: 600;
}

.faq {
    padding: 100px 0;
    background: linear-gradient(180deg, #fff9f5 0%, var(--white) 100%);
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border-radius: 15px;
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
}

.faq-question {
    padding: 25px 30px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 18px;
    transition: all 0.3s;
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-icon {
    width: 30px;
    height: 30px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
    background: var(--primary-color);
    color: white;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 30px;
}

.faq-item.active .faq-answer {
    max-height: 200px;
    padding-bottom: 25px;
}

.faq-answer p {
    color: var(--text-light);
    line-height: 1.8;
}

.footer {
    background: var(--text-dark);
    color: white;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 28px;
    margin-bottom: 15px;
    color: var(--primary-color);
}

.footer-brand p {
    color: #999;
    line-height: 1.8;
    margin-bottom: 20px;
}

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

.social-link {
    width: 45px;
    height: 45px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    text-decoration: none;
    transition: all 0.3s;
}

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

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 20px;
}

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

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

.footer-links a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: #999;
}

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    cursor: pointer;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: white;
    padding: 40px;
    border-radius: 25px;
    max-width: 450px;
    width: 90%;
    transform: scale(0.9);
    transition: transform 0.3s;
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal h3 {
    font-size: 26px;
    margin-bottom: 20px;
    text-align: center;
}

.modal p {
    color: var(--text-light);
    margin-bottom: 25px;
    text-align: center;
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-light);
}

@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-text h1 {
        font-size: 36px;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-buttons {
        justify-content: center;
        flex-wrap: wrap;
    }

    .nav-links {
        display: none;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

    .process-steps::before {
        display: none;
    }

    .task-cards {
        grid-template-columns: 1fr;
    }

    .testimonial-grid {
        grid-template-columns: 1fr;
    }

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

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