/* 修改: 仿照旧版截图的布局样式 */
.home-main {
    padding-top: calc(var(--nav-height) + 60px);
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
    padding-left: 20px;
    padding-right: 20px;
}

.hero {
    margin-bottom: 80px;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    color: var(--primary-color); /* 添加: 纯色标题，删除渐变 */
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

/* 卡片网格布局 */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.5rem 2rem;
    text-align: left;
    transition: transform 0.3s ease, border-color 0.3s;
    text-decoration: none;
}

.card:hover {
    transform: translateY(-8px);
    border-color: var(--primary-color);
    box-shadow: 0 12px 30px rgba(0,0,0,0.1);
}

.card .icon-box {
    width: 48px;
    height: 48px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    margin-bottom: 1.5rem;
}

.card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--text-color);
    font-weight: 700;
}

.card p {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* 响应式适配 */
@media (max-width: 900px) {
    .feature-grid { grid-template-columns: 1fr; }
    .hero h1 { font-size: 2.5rem; }
    .navbar { padding: 0 5%; }
}