/* ============================================================
 * about.php 页面样式
 * ============================================================ */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 40px 24px;
}

/* 页头 */
.page-header {
    text-align: center;
    margin-bottom: 36px;
}
.page-header .crown {
    font-size: 48px;
    margin-bottom: 8px;
}
.page-header h1 {
    font-size: 32px;
    color: #2c3e50;
    font-weight: 600;
    letter-spacing: 2px;
    margin-bottom: 10px;
}
.page-header p {
    color: #999;
    font-size: 15px;
    letter-spacing: 1px;
    line-height: 1.8;
}

/* 卡片 */
.card {
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    padding: 32px;
    margin-bottom: 24px;
}
.card h2 {
    font-size: 19px;
    color: #2c3e50;
    font-weight: 600;
    margin-bottom: 18px;
    padding-left: 12px;
    border-left: 4px solid #4a6741;
    letter-spacing: 1px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.card h2 .h2-icon {
    font-size: 20px;
    line-height: 1;
}
.card p {
    color: #555;
    font-size: 15px;
    line-height: 1.95;
    margin-bottom: 12px;
}
.card p:last-child { margin-bottom: 0; }
.card .highlight {
    color: #b8860b;
    font-weight: 600;
}

/* 核心：AI 大模型板块 */
.card.core-ai {
    background: linear-gradient(135deg, #fdf6e3 0%, #fffbf0 100%);
    border: 1px solid #f0d98a;
    box-shadow: 0 6px 28px rgba(212,160,23,0.12);
}
.card.core-ai h2 {
    border-left-color: #b8860b;
    color: #b8860b;
}
.card.core-ai .core-tip {
    margin-top: 18px;
    font-size: 14px;
    color: #8a6d1b;
    background: #fffbf0;
    padding: 14px 18px;
    border-radius: 10px;
    border-left: 3px solid #d4a017;
    line-height: 1.9;
}

/* 特色功能 */
.feature-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-top: 6px;
}
.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 16px;
    border-radius: 12px;
    background: #fafbfc;
    border: 1px solid #f0f0f0;
    transition: all 0.2s;
}
.feature-item:hover {
    border-color: #d4a017;
    background: #fffbf0;
}
.feature-item .fi-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    background: linear-gradient(135deg, #e8f4e8 0%, #d9ebd9 100%);
    color: #4a6741;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}
.feature-item .fi-icon.gold {
    background: linear-gradient(135deg, #fdf6e3 0%, #fbeec5 100%);
    color: #b8860b;
}
.feature-item .fi-body { flex: 1; min-width: 0; }
.feature-item .fi-title {
    font-size: 14px;
    color: #2c3e50;
    font-weight: 600;
    margin-bottom: 4px;
}
.feature-item .fi-desc {
    font-size: 13px;
    color: #888;
    line-height: 1.6;
}

/* 联系 */
.contact-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.contact-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: #fafbfc;
    border-radius: 10px;
    font-size: 14px;
}
.contact-row .ci-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    background: #e8f4e8;
    color: #4a6741;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}
.contact-row .ci-label {
    color: #888;
    width: 76px;
    flex-shrink: 0;
}
.contact-row .ci-value {
    color: #2c3e50;
    font-weight: 600;
}
.contact-row .ci-value.gold { color: #b8860b; }

/* 声明 */
.disclaimer {
    font-size: 13px;
    color: #888;
    line-height: 1.9;
}
.disclaimer p { margin-bottom: 10px; }
.disclaimer p:last-child { margin-bottom: 0; }
.disclaimer strong { color: #555; }

@media (max-width: 768px) {
    .container { padding: 24px 16px; }
    .page-header h1 { font-size: 24px; }
    .card { padding: 22px 20px; }
    .feature-grid { grid-template-columns: 1fr; }
}