/* 2026豆包排名方案模板 - 响应式样式 */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: #333;
    background: #f5f7fa;
}

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

/* Header */
.header {
    background: #fff;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.logo h1 {
    font-size: 24px;
    color: #1a73e8;
    font-weight: 700;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #1a73e8 0%, #34a853 100%);
    padding: 80px 0;
    text-align: center;
    color: #fff;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 15px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.hero-subtitle {
    font-size: 24px;
    opacity: 0.95;
    margin-bottom: 10px;
}

.hero-desc {
    font-size: 16px;
    opacity: 0.85;
}

/* Form Section */
.form-section {
    padding: 60px 0;
}

.form-card {
    max-width: 500px;
    margin: 0 auto;
    background: #fff;
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.form-title {
    text-align: center;
    font-size: 24px;
    color: #1a73e8;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #333;
}

.form-group input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #1a73e8;
    box-shadow: 0 0 0 3px rgba(26,115,232,0.1);
}

.form-group input::placeholder {
    color: #999;
}

.submit-btn {
    width: 100%;
    padding: 16px;
    background: linear-gradient(135deg, #1a73e8 0%, #34a853 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
    margin-top: 10px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(26,115,232,0.4);
}

.submit-btn:active {
    transform: translateY(0);
}

.submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

/* Success/Error Messages */
.success-message, .error-message {
    text-align: center;
    padding: 30px 0;
}

.success-icon, .error-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 30px;
    font-weight: bold;
}

.success-icon {
    background: #e8f5e9;
    color: #34a853;
}

.error-icon {
    background: #fce8e6;
    color: #ea4335;
}

.success-message h4, .error-message h4 {
    font-size: 20px;
    margin-bottom: 10px;
}

.success-message p, .error-message p {
    color: #666;
}

.email-display {
    margin-top: 10px;
    font-weight: 500;
    color: #1a73e8;
}

/* Features Section */
.features {
    padding: 60px 0;
    background: #fff;
}

.section-title {
    text-align: center;
    font-size: 28px;
    color: #333;
    margin-bottom: 40px;
}

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

.feature-item {
    text-align: center;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 15px;
}

.feature-item h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #333;
}

.feature-item p {
    color: #666;
    font-size: 14px;
}

/* Stats Section */
.stats {
    padding: 60px 0;
}

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

.stat-item .stat-number {
    font-size: 36px;
    font-weight: 700;
    color: #1a73e8;
    margin-bottom: 8px;
}

.stat-item .stat-label {
    color: #666;
    font-size: 14px;
}

/* Steps Section */
.steps {
    padding: 60px 0;
    background: #fff;
}

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

.step-item {
    text-align: center;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 12px;
}

.step-number {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #1a73e8 0%, #34a853 100%);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step-item h4 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #333;
}

.step-item p {
    color: #666;
    font-size: 14px;
}

/* Footer */
.footer {
    background: #1a1a2e;
    color: #fff;
    padding: 30px 0;
    text-align: center;
}

.footer p {
    margin: 5px 0;
    font-size: 14px;
    opacity: 0.8;
}

/* Responsive Design - Tablet */
@media (max-width: 768px) {
    .hero {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 36px;
    }
    
    .hero-subtitle {
        font-size: 20px;
    }
    
    .hero-desc {
        font-size: 14px;
    }
    
    .form-card {
        padding: 30px 20px;
    }
    
    .form-title {
        font-size: 20px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stat-item .stat-number {
        font-size: 28px;
    }
    
    .steps-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 24px;
    }
}

/* Responsive Design - Mobile */
@media (max-width: 480px) {
    .header {
        padding: 15px 0;
    }
    
    .logo h1 {
        font-size: 20px;
    }
    
    .hero {
        padding: 40px 0;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-desc {
        font-size: 13px;
    }
    
    .form-section {
        padding: 40px 0;
    }
    
    .form-card {
        padding: 25px 15px;
    }
    
    .form-title {
        font-size: 18px;
    }
    
    .form-group input {
        padding: 12px 14px;
        font-size: 14px;
    }
    
    .submit-btn {
        padding: 14px;
        font-size: 16px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-item {
        padding: 20px;
    }
    
    .feature-icon {
        font-size: 36px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .stat-item .stat-number {
        font-size: 24px;
    }
    
    .stat-item .stat-label {
        font-size: 12px;
    }
    
    .section-title {
        font-size: 20px;
    }
    
    .step-item {
        padding: 20px;
    }
    
    .footer {
        padding: 20px 0;
    }
    
    .footer p {
        font-size: 12px;
    }
}