.ltp-link-tree-wrap {
    --ltp-bg-1: #081224;
    --ltp-bg-2: #0d1b34;
    --ltp-panel: rgba(255,255,255,0.08);
    --ltp-panel-strong: rgba(255,255,255,0.13);
    --ltp-border: rgba(255,255,255,0.14);
    --ltp-text: #f8fbff;
    --ltp-muted: rgba(248,251,255,0.72);
    --ltp-accent: #8ec5ff;
    --ltp-accent-2: #caa8ff;
    max-width: 980px;
    margin: 28px auto;
    padding: 22px;
    border-radius: 28px;
    background:
        radial-gradient(circle at top left, rgba(142,197,255,0.18), transparent 35%),
        radial-gradient(circle at top right, rgba(202,168,255,0.18), transparent 30%),
        linear-gradient(135deg, var(--ltp-bg-1), var(--ltp-bg-2));
    box-shadow: 0 24px 60px rgba(6, 12, 24, 0.28);
    color: var(--ltp-text);
    overflow: hidden;
}

.ltp-link-tree {
    display: grid;
    gap: 22px;
}

.ltp-main-card {
    background: linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0.05));
    border: 1px solid var(--ltp-border);
    border-radius: 24px;
    padding: 20px;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: inset 0 1px 0 rgba(255,255,255,0.08);
}

.ltp-main-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid rgba(255,255,255,0.12);
}

.ltp-main-icon {
    width: 38px;
    height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--ltp-accent), var(--ltp-accent-2));
    color: #07101e;
    font-size: 16px;
    font-weight: 700;
    box-shadow: 0 10px 20px rgba(142,197,255,0.25);
    flex: 0 0 auto;
}

.ltp-main-head h2 {
    margin: 0;
    font-size: 29px;
    line-height: 1.2;
    color: var(--ltp-text);
    letter-spacing: -0.02em;
}

.ltp-tree-level {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 12px;
}

.ltp-item { margin: 0; }

.ltp-toggle {
    width: 100%;
    border: 1px solid rgba(255,255,255,0.10);
    background: linear-gradient(180deg, rgba(255,255,255,0.10), rgba(255,255,255,0.06));
    border-radius: 18px;
    padding: 15px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    color: var(--ltp-text);
    cursor: pointer;
    text-align: left;
    transition: transform .25s ease, border-color .25s ease, background .25s ease, box-shadow .25s ease;
    box-shadow: 0 10px 24px rgba(2, 10, 20, 0.15);
}

.ltp-toggle:hover {
    transform: translateY(-1px);
    border-color: rgba(142,197,255,0.30);
    background: linear-gradient(180deg, rgba(255,255,255,0.13), rgba(255,255,255,0.08));
}

.ltp-toggle-left {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.ltp-badge {
    font-size: 11px;
    font-weight: 700;
    letter-spacing: .08em;
    text-transform: uppercase;
    padding: 8px 10px;
    border-radius: 999px;
    color: #07101e;
    background: linear-gradient(135deg, #d7ebff, #b08fff);
    white-space: nowrap;
    box-shadow: 0 8px 18px rgba(176,143,255,0.20);
}

.ltp-title {
    font-size: 17px;
    font-weight: 700;
    color: var(--ltp-text);
    line-height: 1.35;
}

.ltp-chevron {
    width: 12px;
    height: 12px;
    border-right: 2px solid var(--ltp-text);
    border-bottom: 2px solid var(--ltp-text);
    transform: rotate(45deg);
    transition: transform .25s ease;
    flex: 0 0 auto;
    margin-right: 4px;
}

.ltp-item-folder.is-open > .ltp-toggle .ltp-chevron {
    transform: rotate(225deg);
    margin-top: 6px;
}

.ltp-children {
    display: none;
    padding-top: 12px;
    padding-left: 18px;
    border-left: 1px solid rgba(255,255,255,0.10);
    margin-left: 14px;
    margin-top: 10px;
}

.ltp-item-folder.is-open > .ltp-children {
    display: block;
}

.ltp-topic-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-radius: 16px;
    text-decoration: none;
    color: var(--ltp-text);
    background: linear-gradient(180deg, rgba(255,255,255,0.07), rgba(255,255,255,0.04));
    border: 1px solid rgba(255,255,255,0.08);
    transition: transform .25s ease, border-color .25s ease, background .25s ease, box-shadow .25s ease;
}

.ltp-topic-link:hover {
    transform: translateY(-1px);
    border-color: rgba(142,197,255,0.30);
    background: linear-gradient(180deg, rgba(142,197,255,0.14), rgba(255,255,255,0.06));
    box-shadow: 0 12px 28px rgba(2, 10, 20, 0.18);
}

.ltp-topic-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--ltp-accent), var(--ltp-accent-2));
    box-shadow: 0 0 0 6px rgba(142,197,255,0.10);
    flex: 0 0 auto;
}

.ltp-topic-text {
    flex: 1 1 auto;
    min-width: 0;
    font-size: 16px;
    font-weight: 600;
    line-height: 1.4;
}

.ltp-topic-arrow {
    opacity: .85;
    font-size: 16px;
    transition: transform .25s ease;
}

.ltp-topic-link:hover .ltp-topic-arrow {
    transform: translate(2px, -2px);
}

@media (max-width: 767px) {
    .ltp-link-tree-wrap {
        margin: 18px auto;
        padding: 14px;
        border-radius: 22px;
    }

    .ltp-main-card {
        padding: 14px;
        border-radius: 18px;
    }

    .ltp-main-head {
        gap: 10px;
        margin-bottom: 14px;
        padding-bottom: 12px;
    }

    .ltp-main-icon {
        width: 32px;
        height: 32px;
        border-radius: 12px;
        font-size: 14px;
    }

    .ltp-main-head h2 {
        font-size: 22px;
    }

    .ltp-toggle,
    .ltp-topic-link {
        padding: 13px 12px;
        border-radius: 14px;
    }

    .ltp-toggle-left {
        gap: 10px;
        align-items: flex-start;
    }

    .ltp-badge {
        padding: 7px 8px;
        font-size: 10px;
    }

    .ltp-title,
    .ltp-topic-text {
        font-size: 15px;
    }

    .ltp-children {
        padding-left: 12px;
        margin-left: 8px;
    }
}