/* ================= 主页专属排版 ================= */
.home-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: calc(100vh - 150px);
    padding: 0 20px;
}

.home-content {
    max-width: 800px;
    width: 100%;
    padding: 40px 0;
}

.home-header {
    margin-bottom: 40px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
}

.highlight-text {
    color: var(--theme-gold);
    font-size: 13px;
    letter-spacing: 2px;
    margin-bottom: 10px;
    display: block;
}

.home-title {
    font-size: 36px;
    font-weight: 300;
    letter-spacing: 4px;
    color: var(--text-main);
}

.home-bio {
    color: var(--text-muted);
    margin-bottom: 40px;
    font-size: 14px;
    text-align: justify;
    line-height: 2;
}

.home-bio p {
    margin-bottom: 15px;
}

/* 甲方指路牌 */
.client-guide {
    border-left: 1px solid var(--theme-gold);
    /* 保持极细边框规范 */
    margin-bottom: 50px;
    background: rgba(200, 169, 81, 0.05);
    padding: 20px;
}

.client-guide p {
    margin: 0;
    font-size: 13px;
    color: var(--text-main);
}

.highlight-guide {
    color: var(--theme-gold);
    /* 移除 font-weight: 600，保持极细字体规范，改用下划线强调 */
    border-bottom: 1px solid var(--theme-gold);
    padding-bottom: 2px;
    transition: color 0.3s ease, border-color 0.3s ease;
}

.highlight-guide:hover {
    color: var(--text-main);
    border-color: var(--text-main);
}

/* ================= 2x2 目录网格 ================= */
.directory-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.dir-card {
    border: 1px solid var(--border-color);
    padding: 30px 20px;
    background: var(--bg-card);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    /* 性能优化：避免使用 all，指定具体属性并加入贝塞尔曲线 */
    transition: border-color 0.4s ease, transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 左侧机密线条动画 */
.dir-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 2px;
    /* 稍微调细一点，更符合极简 */
    height: 100%;
    background: var(--theme-gold);
    transform: scaleY(0);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: bottom;
}

.dir-card:hover {
    border-color: var(--theme-gold);
    transform: translateY(-3px);
}

.dir-card:hover::before {
    transform: scaleY(1);
}

.dir-num {
    font-size: 10px;
    color: var(--text-muted);
    margin-bottom: 10px;
    transition: color 0.4s ease;
}

.dir-title {
    font-size: 16px;
    color: var(--text-main);
    margin-bottom: 5px;
    letter-spacing: 1px;
    transition: color 0.4s ease;
}

/* 悬浮时标题文字同步变金 */
.dir-card:hover .dir-title,
.dir-card:hover .dir-num {
    color: var(--theme-gold);
}

.dir-desc {
    font-size: 12px;
    color: var(--text-muted);
}

/* ================= 响应式降维 ================= */
@media (max-width: 700px) {
    .directory-grid {
        grid-template-columns: 1fr;
    }
}