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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(to bottom, #f0f2f5 0%, #ffffff 100%);
    color: #1a1a1a;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    background: transparent;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
}

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

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

.header-logo-text {
    font-size: 18px;
    font-weight: 600;
    color: #ffffff;
}

.header-links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.support-link {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    background: transparent;
    transition: all 0.3s;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.support-link:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.15);
}

.sign-in-btn {
    background: #4285f4;
    color: white;
    border: none;
    padding: 10px 24px;
    border-radius: 20px;
    font-size: 14px;
    cursor: pointer;
    transition: background 0.3s;
}

.sign-in-btn:hover {
    background: #3367d6;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 180px 20px 160px;
    background: linear-gradient(135deg, #0f766e 0%, #2d5f8a 100%);
}

.hero h1 {
    font-size: 56px;
    font-weight: 700;
    margin-bottom: 20px;
    color: #ffffff;
}

.hero p {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    align-items: center;
}

.install-btn {
    display: inline-block;
    background: #ffffff;
    color: #1e3a5f;
    border: none;
    border-radius: 8px;
    padding: 16px 40px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s;
}

.install-btn:hover {
    background: rgba(255, 255, 255, 0.9);
    color: #1e3a5f;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.create-btn {
    background: #4285f4;
    color: white;
    border: none;
    padding: 12px 32px;
    border-radius: 6px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s;
}

.create-btn:hover {
    background: #3367d6;
}

/* Features Section */
.features {
    padding: 80px 20px;
    text-align: center;
    background: #f0fdfa;
}

.features h2 {
    font-size: 36px;
    margin-bottom: 16px;
    color: #1a1a1a;
}

.features-subtitle {
    color: #5f6368;
    font-size: 18px;
    margin-bottom: 60px;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
    margin-top: 60px;
}

.feature-image {
    width: 100%;
    max-width: 600px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    margin: 0 auto;
    display: block;
}

/* Upload Card */
.upload-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    text-align: left;
}

.learn-more {
    display: inline-flex;
    align-items: center;
    color: #0f766e;
    font-weight: 600;
    text-decoration: none;
    margin-top: 8px;
}

.learn-more:hover {
    color: #115e59;
}

.upload-header {
    background: linear-gradient(135deg, #7c4dff 0%, #651fff 100%);
    color: white;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.upload-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.upload-body {
    padding: 60px 40px;
    text-align: center;
    border: 2px dashed #e0e0e0;
    margin: 20px;
    border-radius: 8px;
    background: #fafafa;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: 20px;
    color: #5f6368;
}

.upload-body p {
    color: #5f6368;
    margin-bottom: 10px;
}

.upload-info {
    font-size: 12px;
    color: #9e9e9e;
    margin-top: 20px;
}

.generate-btn {
    background: #4285f4;
    color: white;
    border: none;
    padding: 12px 32px;
    border-radius: 6px;
    font-size: 16px;
    margin-top: 20px;
    cursor: pointer;
    transition: background 0.3s;
}

.generate-btn:hover {
    background: #3367d6;
}

/* Feature Text */
.feature-text {
    text-align: left;
}

.feature-text h3 {
    font-size: 28px;
    margin-bottom: 16px;
    color: #1a1a1a;
    white-space: nowrap;
}

.feature-text p {
    font-size: 16px;
    color: #5f6368;
    line-height: 1.8;
}

/* Generate Section */
.generate-section {
    background: #ffffff;
    padding: 80px 20px;
}

.generate-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.generate-content .feature-text {
    padding-right: 0;
}

.generate-content .feature-image {
    margin: 0 auto;
    display: block;
}

.form-preview {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.form-preview h4 {
    font-size: 14px;
    color: #5f6368;
    margin-bottom: 20px;
}

.form-questions {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.question-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 0;
}

.radio-btn {
    width: 16px;
    height: 16px;
    border: 2px solid #5f6368;
    border-radius: 50%;
}

.question-text {
    font-size: 14px;
    color: #1a1a1a;
}

/* FAQ Section */
.faq {
    padding: 80px 20px;
    background: #f0fdfa;
}

.faq h2 {
    font-size: 36px;
    margin-bottom: 48px;
    text-align: center;
    color: #1a1a1a;
}

.faq-list {
    max-width: 720px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid #e5e7eb;
}

.faq-item summary {
    font-size: 17px;
    font-weight: 600;
    color: #1a1a1a;
    padding: 20px 0;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-size: 24px;
    font-weight: 300;
    color: #9ca3af;
    transition: transform 0.2s;
}

.faq-item[open] summary::after {
    content: '−';
}

.faq-item p {
    font-size: 15px;
    color: #5f6368;
    line-height: 1.7;
    padding: 0 0 20px;
}

.faq-item a {
    color: #0f766e;
    text-decoration: none;
}

.faq-item a:hover {
    text-decoration: underline;
}

/* Footer */
.footer {
    background: #ffffff;
    padding: 48px 20px 32px;
    color: #5f6368;
    border-top: 1px solid #e5e7eb;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 32px;
    border-bottom: 1px solid #e5e7eb;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-logo-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    object-fit: contain;
}

.footer-brand-name {
    font-size: 16px;
    font-weight: 600;
    color: #1a1a1a;
}

.footer-nav {
    display: flex;
    gap: 32px;
}

.footer-nav a {
    color: #5f6368;
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

.footer-nav a:hover {
    color: #0f766e;
}

.footer-bottom {
    padding-top: 24px;
    text-align: center;
}

.copyright {
    font-size: 13px;
    color: #9e9e9e;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 36px;
    }

    .features-grid,
    .generate-content,
    .faq-grid {
        grid-template-columns: 1fr;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .footer-top {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

    .footer-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }
}