/**
 * 关于页面样式
 */

:root {
    --page-hero-start: var(--color-primary-light);
    --page-hero-pattern: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%239C92AC' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    --page-list-icon: '';
    --page-list-icon-x: 6px;
    --page-list-icon-y: 9px;
    --page-accent-color: var(--color-primary);
    --page-accent-bg: var(--color-primary-light);
}

/* ========== 板块一：品牌定位 ========== */
.brand-hero {
    text-align: center;
    padding: 80px 24px 60px;
    border-bottom: 1px solid var(--color-border-light);
}

.brand-hero-title {
    font-size: 36px;
    font-weight: 400;
    color: var(--color-text);
    margin-bottom: 16px;
    line-height: 1.4;
}

.brand-hero-subtitle {
    font-size: 28px;
    font-weight: 600;
    color: var(--color-primary);
    margin: 0;
    letter-spacing: 1px;
}

/* ========== 板块二：品牌故事 ========== */
.brand-story {
    padding: 48px 24px;
    max-width: 680px;
    margin: 0 auto;
}

.story-para {
    font-size: 17px;
    line-height: 2;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
}

.story-para.brand-highlight {
    font-size: 19px;
    font-weight: 500;
    color: var(--color-text);
    margin-top: 32px;
    margin-bottom: 32px;
}

.story-para.story-slogan {
    margin-top: 40px;
    margin-bottom: 16px;
}

.story-quote {
    font-size: 28px;
    font-weight: 600;
    color: var(--color-primary);
    text-align: center;
    margin: 24px 0;
    letter-spacing: 2px;
}

.story-para.story-footer {
    text-align: center;
    font-size: 16px;
    color: var(--color-text);
    margin-top: 24px;
}

/* ========== 板块三：品牌信念 ========== */
.brand-beliefs {
    padding: 48px 24px 60px;
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border-light);
    border-bottom: 1px solid var(--color-border-light);
}

.beliefs-title {
    text-align: center;
    font-size: 20px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 32px;
}

.beliefs-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.belief-card {
    background: var(--color-bg);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

.belief-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.belief-icon {
    font-size: 40px;
    margin-bottom: 16px;
}

.belief-name {
    font-size: 17px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 12px;
}

.belief-desc {
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin: 0;
}

/* 列表圆点 */
.content-card li::before {
    width: 5px;
    height: 5px;
    background: var(--color-primary);
    border-radius: 50%;
}

/* ========== 项目介绍卡片 ========== */
.intro-card {
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-bg-secondary) 100%);
    border: 1px solid var(--color-primary-muted);
}

.intro-text {
    font-size: 15px;
    line-height: 1.8;
    color: var(--color-text-secondary);
    margin-bottom: 12px;
}

.intro-text:last-child {
    margin-bottom: 0;
}

.intro-text strong {
    color: var(--color-text);
}

/* ========== 数据统计区域 ========== */
.stats-section {
    margin-bottom: 24px;
}

.stats-grid-enhanced {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.stat-item {
    text-align: center;
    padding: 28px 16px;
    background: var(--color-bg-secondary);
    border-radius: 16px;
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

.stat-item:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.stat-item .stat-icon {
    font-size: 28px;
    margin-bottom: 8px;
}

.stat-item .stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 4px;
}

.stat-item .stat-label {
    font-size: 13px;
    color: var(--color-text-secondary);
}

/* ========== 核心特点网格 ========== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.feature-card {
    padding: 20px;
    background: var(--color-bg);
    border-radius: 12px;
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

.feature-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.feature-card .feature-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    border-radius: 10px;
    margin-bottom: 12px;
}

.feature-card .feature-icon.blue { background: rgba(59, 130, 246, 0.15); }
.feature-card .feature-icon.green { background: rgba(34, 197, 94, 0.15); }
.feature-card .feature-icon.purple { background: rgba(168, 85, 247, 0.15); }
.feature-card .feature-icon.orange { background: rgba(249, 115, 22, 0.15); }
.feature-card .feature-icon.red { background: rgba(239, 68, 68, 0.15); }
.feature-card .feature-icon.teal { background: rgba(20, 184, 166, 0.15); }

.feature-card h4 {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    margin: 0 0 6px;
}

.feature-card p {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* ========== 工具分类列表 ========== */
.section-desc {
    color: var(--color-text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}

.category-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 12px;
}

.category-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 16px;
    background: var(--color-bg);
    border-radius: 10px;
    border: 1px solid var(--color-border-light);
    transition: var(--transition);
}

.category-item:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-light);
}

.category-item .category-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.category-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.category-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
}

.category-tools {
    font-size: 12px;
    color: var(--color-text-secondary);
}

/* ========== 使用承诺 ========== */
.promise-card {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.08) 0%, var(--color-bg-secondary) 100%);
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.promise-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.promise-item {
    display: flex;
    gap: 12px;
    padding: 14px;
    background: var(--color-bg);
    border-radius: 10px;
}

.promise-icon {
    font-size: 20px;
    flex-shrink: 0;
}

.promise-content strong {
    display: block;
    font-size: 14px;
    color: var(--color-text);
    margin-bottom: 4px;
}

.promise-content p {
    font-size: 13px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin: 0;
}

/* ========== 结尾标语 ========== */
.about-closing {
    text-align: center;
    padding: 48px 24px;
    margin-top: 16px;
    background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-bg-secondary) 100%);
    border-radius: 16px;
    border: 1px solid var(--color-primary-muted);
}

.closing-text {
    font-size: 22px;
    font-weight: 500;
    color: var(--color-text);
    letter-spacing: 1px;
    margin: 0;
}

/* ========== 联系方式网格 ========== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px;
    background: var(--color-bg);
    border-radius: 12px;
    border: 1px solid var(--color-border-light);
    text-decoration: none;
    transition: var(--transition);
}

.contact-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.contact-card .contact-icon {
    font-size: 32px;
}

.contact-info .contact-label {
    font-size: 12px;
    color: var(--color-text-secondary);
    margin-bottom: 2px;
}

.contact-info .contact-value {
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text);
}

/* ========== 快速链接 ========== */
.quick-links-section {
    display: flex;
    justify-content: center;
    gap: 16px;
    margin-top: 32px;
    padding: 20px;
    background: var(--color-bg-secondary);
    border-radius: 12px;
    border: 1px solid var(--color-border-light);
}

.quick-link-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--color-bg);
    border-radius: 8px;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}

.quick-link-item:hover {
    background: var(--color-primary-light);
    color: var(--color-primary);
}

.quick-link-icon {
    font-size: 16px;
}

/* ========== 响应式 ========== */
@media (max-width: 768px) {
    .brand-hero {
        padding: 60px 16px 40px;
    }

    .brand-hero-title {
        font-size: 28px;
    }

    .brand-hero-subtitle {
        font-size: 22px;
    }

    .brand-story {
        padding: 36px 16px;
    }

    .story-para {
        font-size: 16px;
    }

    .story-quote {
        font-size: 24px;
    }

    .beliefs-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .belief-card {
        padding: 24px 20px;
    }

    .about-closing {
        padding: 32px 16px;
    }

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

    .stats-grid-enhanced {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .stat-item {
        padding: 20px 12px;
    }

    .stat-item .stat-value {
        font-size: 26px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }

    .feature-card {
        padding: 16px;
    }

    .category-list {
        grid-template-columns: 1fr;
    }

    .promise-list {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .quick-links-section {
        flex-direction: column;
        gap: 10px;
    }

    .quick-link-item {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}