.rcb-outline-toggle {
    position: fixed;
    right: 0;
    top: 42%;
    z-index: 9998;
    border: 0;
    border-radius: 6px 0 0 6px;
    background: #0b5394;
    color: #fff;
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    min-width: 42px;
    min-height: 86px;
    padding: 14px 10px;
    writing-mode: vertical-rl;
    text-orientation: mixed;
    box-shadow: 0 2px 10px rgba(0,0,0,0.22);
}

.rcb-outline-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(420px, 88vw);
    z-index: 9999;
    background: #fff;
    color: #222;
    border-left: 1px solid #d7d7d7;
    box-shadow: -4px 0 18px rgba(0,0,0,0.2);
    transform: translateX(100%);
    transition: transform 180ms ease;
    display: flex;
    flex-direction: column;
}

.rcb-outline-panel.is-open {
    transform: translateX(0);
}

.rcb-outline-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border-bottom: 1px solid #e5e5e5;
    background: #f7f7f7;
}

.rcb-outline-title {
    font-weight: 700;
    font-size: 15px;
}

.rcb-outline-close {
    border: 0;
    background: transparent;
    cursor: pointer;
    font-size: 24px;
    line-height: 1;
    color: #333;
}

.rcb-outline-body {
    overflow: auto;
    padding: 10px 0 24px;
}

.rcb-outline-empty,
.rcb-outline-loading {
    color: #666;
    padding: 14px;
}

.rcb-outline-item {
    position: relative;
    display: block;
    color: #222;
    text-decoration: none;
    border-left: 4px solid transparent;
    border-bottom: 1px solid #eee;
    padding: 5px 12px;
    line-height: 1.25;
}

.rcb-outline-item.is-hidden {
    display: none;
}

.rcb-outline-item:hover {
    background: #f3f7fb;
    color: #0b5394;
}

.rcb-outline-item.is-active {
    background: #eaf3fb;
    border-left-color: #0b5394;
    color: #0b5394;
}

.rcb-outline-heading {
    display: flex;
    align-items: flex-start;
    gap: 5px;
    font-size: 14px;
}

.rcb-outline-heading-text {
    flex: 1;
}

.rcb-outline-toggle-node,
.rcb-outline-toggle-spacer {
    width: 16px;
    flex: 0 0 auto;
}

.rcb-outline-toggle-node {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 16px;
    margin-top: 1px;
    border: 1px solid #d0d7de;
    border-radius: 3px;
    color: #57606a;
    font-size: 11px;
    line-height: 1;
    background: #fff;
    cursor: pointer;
}

.rcb-outline-toggle-node:hover {
    border-color: #0b5394;
    color: #0b5394;
}

.rcb-outline-ref {
    display: block;
    margin-top: 2px;
    margin-left: 21px;
    color: #777;
    font-size: 12px;
}

.rcb-outline-level-1 {
    margin-top: 8px;
    padding: 7px 12px;
    background: #f6f8fa;
    border-top: 1px solid #e8edf2;
    font-weight: 700;
}

.rcb-outline-level-1:first-child {
    margin-top: 0;
    border-top: 0;
}

.rcb-outline-level-2 { padding-left: 24px; font-weight: 600; }
.rcb-outline-level-3 { padding-left: 38px; }
.rcb-outline-level-4 { padding-left: 52px; }
.rcb-outline-level-5 { padding-left: 66px; }
.rcb-outline-level-6 { padding-left: 80px; }

.rcb-outline-level-3 .rcb-outline-heading,
.rcb-outline-level-4 .rcb-outline-heading,
.rcb-outline-level-5 .rcb-outline-heading,
.rcb-outline-level-6 .rcb-outline-heading {
    font-size: 13px;
}

@media (max-width: 640px) {
    .rcb-outline-toggle {
        top: auto;
        right: auto;
        left: 30px;
        bottom: 20px;
        writing-mode: horizontal-tb;
        border-radius: 4px;
        min-width: 88px;
        min-height: 44px;
        padding: 12px 18px;
        box-shadow: 0 2px 12px rgba(0,0,0,0.26);
    }

    .rcb-outline-panel {
        top: auto;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 62vh;
        max-height: 520px;
        border-left: 0;
        border-top: 1px solid #d7d7d7;
        transform: translateY(calc(100% + 16px));
    }

    .rcb-outline-panel.is-open {
        transform: translateY(25px);
    }
}