/* PDF文档处理工具 - 基础样式 */

/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f7fa;
}

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

/* Header */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 40px;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 100%;
    margin: 0;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.logo:hover {
    opacity: 0.9;
}

.back-btn {
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    border-radius: 6px;
    text-decoration: none;
    transition: background 0.3s;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* 页面标题区域 - 延续紫色渐变背景 */
.page-title-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 40px 0 50px;
    text-align: center;
}

.page-title {
    font-size: 32px;
    font-weight: 600;
    color: white;
    margin-bottom: 12px;
}

.page-description {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.85);
}

/* Steps Section */
.steps-section {
    background: white;
    padding: 40px 0;
    border-bottom: 1px solid #e5e7eb;
}

.steps-wrapper {
    max-width: 700px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.steps-row {
    display: flex;
    align-items: center;
    width: 100%;
    margin-bottom: 16px;
}

.step-circle {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #e5e7eb;
    color: #6b7280;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 600;
    flex-shrink: 0;
    z-index: 1;
}

.step-line {
    flex-grow: 1;
    height: 3px;
    background: #e5e7eb;
    min-width: 80px;
}

.steps-labels {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    align-items: center;
    width: 100%;
}

.step-label {
    font-size: 16px;
    font-weight: 500;
    color: #4b5563;
    text-align: center;
    flex: 1;
}

/* Footer */
.footer {
    background: #2d3748;
    color: white;
    padding: 30px 0;
    text-align: center;
    margin-top: 60px;
}

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

.footer a {
    color: #90cdf4;
    text-decoration: none;
    transition: color 0.3s;
}

.footer a:hover {
    color: #63b3ed;
}