/* Shared navigation for research teams, units, achievements, platforms and resources. */
.research-layout {
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    align-items: start;
    gap: 40px;
    width: 90%;
    max-width: 1680px;
    margin: 0 auto;
    padding: 48px 0 72px;
}

.research-layout > :is(.info, .u-main, .progress-main) {
    width: 100%;
    min-width: 0;
}

.research-sidebar {
    position: relative;
    width: 100%;
    overflow: hidden;
    border: 1px solid #d6e6e8;
    border-radius: 4px;
    background: #fff;
    box-shadow: 0 2px 20px rgba(0, 58, 64, .08);
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
}

.research-sidebar > :is(.menu-title, .u-nav-title, .progress-side-title) {
    margin: 0;
    padding: 18px 24px;
    background: #006e7b;
    color: #fff;
    font: 400 24px/34px "Microsoft YaHei", "PingFang SC", sans-serif;
    text-align: left;
}

.research-sidebar > :is(.menu-list, nav, .progress-side-menu) {
    display: block;
    width: 100%;
    margin: 0;
    padding: 0;
}

.research-sidebar :is(.menu-item, nav a, .progress-side-item) {
    display: flex;
    position: relative;
    align-items: center;
    width: 100%;
    min-height: 60px;
    margin: 0;
    padding: 16px 20px 16px 44px;
    border: 0;
    border-bottom: 1px solid #e5eef0;
    border-radius: 0;
    background: #fff;
    color: #263d46;
    font: 400 15px/26px "Microsoft YaHei", "PingFang SC", sans-serif;
    text-align: left;
    text-decoration: none;
    overflow-wrap: anywhere;
    cursor: pointer;
    transition: background-color .2s, color .2s;
}

.research-sidebar :is(.menu-item, nav a, .progress-side-item):last-child {
    border-bottom: 0;
}

.research-sidebar :is(.menu-item, nav a, .progress-side-item)::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 24px;
    width: 4px;
    height: 16px;
    border-radius: 2px;
    background: #a9c8cd;
    transform: translateY(-50%);
}

.research-sidebar :is(.menu-item, nav a, .progress-side-item):hover,
.research-sidebar :is(.menu-item-curr, [aria-current="page"], .progress-side-item-current) {
    background: #eef7f8;
    color: #006e7b;
}

.research-sidebar :is(.menu-item, nav a, .progress-side-item):hover::before,
.research-sidebar :is(.menu-item-curr, [aria-current="page"], .progress-side-item-current)::before {
    background: #006e7b;
}

.research-sidebar :is(.menu-item, nav a, .progress-side-item):focus-visible {
    outline: 2px solid #006e7b;
    outline-offset: -3px;
}

@media (max-width: 1100px) {
    .research-layout {
        width: 92%;
        grid-template-columns: 220px minmax(0, 1fr);
        gap: 24px;
    }
}

@media (max-width: 700px) {
    .research-layout {
        width: calc(100% - 32px);
        grid-template-columns: minmax(0, 1fr);
        gap: 28px;
        padding: 24px 0 40px;
    }

    .research-sidebar > :is(.menu-title, .u-nav-title, .progress-side-title) {
        padding: 12px 20px;
        font-size: 22px;
        line-height: 32px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .research-sidebar :is(.menu-item, nav a, .progress-side-item) {
        transition: none;
    }
}

/* Full-width variant shares the same page gutters and vertical rhythm. */
.research-layout.research-layout--full { display:block; }