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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #333;
}

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

/* Header */
header {
    background: #fff;
    padding: 20px 0;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 24px;
    font-weight: 700;
    color: #333;
}

.logo-wisdom {
    color: #4A90E2;
}

.logo-loop {
    color: #7B68EE;
}

nav a {
    margin-left: 30px;
    text-decoration: none;
    color: #666;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #4A90E2;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: 700;
    line-height: 1.2;
}

.hero p {
    font-size: 24px;
    margin-bottom: 40px;
    opacity: 0.95;
}

.hero-subtitle {
    font-size: 18px;
    max-width: 600px;
    margin: 0 auto 40px;
    opacity: 0.9;
}

/* Quote Example */
.quote-section {
    padding: 60px 0;
    background: #f8f9fa;
}

.section-title {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    color: #333;
}

.quote-example {
    max-width: 700px;
    margin: 0 auto;
    background: white;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.quote-text {
    font-size: 22px;
    font-style: italic;
    color: #4A90E2;
    margin-bottom: 20px;
    line-height: 1.5;
    border-left: 4px solid #4A90E2;
    padding-left: 20px;
}

.quote-insight {
    font-size: 16px;
    color: #666;
    margin-bottom: 15px;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 8px;
}

.quote-insight strong {
    color: #333;
}

.quote-source {
    font-size: 14px;
    color: #999;
    text-align: right;
    font-style: italic;
}

/* Testimonials */
.testimonials {
    padding: 60px 0;
    background: white;
}

.testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.testimonial-card {
    background: #f8f9fa;
    padding: 30px;
    border-radius: 12px;
    border-left: 4px solid #4A90E2;
}

.testimonial-card p {
    font-size: 16px;
    color: #555;
    margin-bottom: 15px;
    line-height: 1.6;
}

.testimonial-author {
    font-size: 14px;
    color: #999;
    font-weight: 600;
}

/* Signup Form */
.signup-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.signup-section h2 {
    font-size: 36px;
    margin-bottom: 20px;
}

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

.signup-form {
    max-width: 650px;
    margin: 0 auto;
    background: white;
    padding: 50px;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.form-group {
    margin-bottom: 24px;
    text-align: left;
}

.form-group label,
.question-label {
    display: block;
    margin-bottom: 10px;
    color: #2c3e50;
    font-weight: 600;
    font-size: 15px;
}

.required {
    color: #e74c3c;
    font-weight: 700;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e1e8ed;
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.3s ease;
    font-family: inherit;
    background-color: #fafbfc;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    background-color: white;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #95a5a6;
}

.form-group select {
    cursor: pointer;
    background-color: #fafbfc;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%23667eea' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 45px;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
    line-height: 1.6;
}

.radio-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 12px;
    margin-top: 12px;
}

.radio-option {
    position: relative;
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 14px 16px;
    border: 2px solid #e1e8ed;
    border-radius: 8px;
    transition: all 0.3s ease;
    background-color: #fafbfc;
}

.radio-option:hover {
    border-color: #667eea;
    background-color: #f8f9fe;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
}

.radio-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.radio-option input[type="radio"]:checked + .radio-text {
    color: #667eea;
    font-weight: 600;
}

.radio-option input[type="radio"]:checked ~ .radio-text::before {
    content: '';
    position: absolute;
    left: 0;
    width: 20px;
    height: 20px;
    border: 2px solid #667eea;
    border-radius: 50%;
    background-color: #667eea;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='9' viewBox='0 0 12 9' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 4.5L4.5 8L11 1' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
}

.radio-option:has(input:checked) {
    border-color: #667eea;
    background-color: #f8f9fe;
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.2);
}

.radio-text {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding-left: 32px;
    position: relative;
    font-size: 15px;
    color: #2c3e50;
    transition: all 0.3s ease;
}

.radio-text::before {
    content: '';
    position: absolute;
    left: 0;
    width: 20px;
    height: 20px;
    border: 2px solid #d1d8dd;
    border-radius: 50%;
    background-color: white;
    transition: all 0.3s ease;
}

.radio-title {
    flex: 1;
}

.btn-primary {
    width: 100%;
    padding: 16px 32px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 17px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
    margin-top: 12px;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-arrow {
    font-size: 20px;
    transition: transform 0.3s ease;
}

.btn-primary:hover .btn-arrow {
    transform: translateX(5px);
}

.form-message {
    margin-top: 20px;
    padding: 12px;
    border-radius: 6px;
    display: none;
}

.form-message.success {
    background: #d4edda;
    color: #155724;
    display: block;
}

.form-message.error {
    background: #f8d7da;
    color: #721c24;
    display: block;
}

/* Footer */
footer {
    background: #333;
    color: white;
    padding: 40px 0;
    text-align: center;
}

footer p {
    margin-bottom: 20px;
    opacity: 0.8;
}

.footer-links a {
    color: white;
    text-decoration: none;
    margin: 0 15px;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 1;
}

/* Stats */
.stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    margin-top: 40px;
}

.stat {
    text-align: center;
}

.stat-number {
    font-size: 48px;
    font-weight: 700;
    color: white;
    display: block;
}

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

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 32px;
    }

    .hero p {
        font-size: 18px;
    }

    .section-title {
        font-size: 24px;
    }

    .quote-text {
        font-size: 18px;
    }

    .signup-form {
        padding: 35px 25px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }

    .radio-group {
        grid-template-columns: 1fr;
    }

    nav a {
        margin-left: 15px;
        font-size: 14px;
    }

    .stats {
        flex-direction: column;
        gap: 30px;
    }
}

@media (max-width: 480px) {
    .signup-form {
        padding: 30px 20px;
    }

    .radio-option {
        padding: 12px 14px;
    }

    .form-group input,
    .form-group select,
    .form-group textarea {
        padding: 12px 14px;
        font-size: 14px;
    }
}