.highlight {
    background: var(--code-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin: 16px 0;
    overflow: hidden;
    position: relative;
    transition: border var(--transition), background var(--transition);
}
.highlight pre {
    padding: 16px 20px;
    margin: 0;
    overflow-x: auto;
    font-size: 0.95rem;
    line-height: 1.8;
    font-family: var(--code-font);
    direction: ltr;
    text-align: left;
    background: transparent;
    color: var(--text);
    font-weight: 400;
    scrollbar-width: thin;
}
.highlight pre::-webkit-scrollbar {
    height: 4px;
}
.highlight pre::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 10px;
}
.copy-btn {
    position: absolute;
    top: 8px;
    left: 8px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 4px 14px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: var(--font-family);
    opacity: 0;
    display: flex;
    align-items: center;
    gap: 6px;
    font-weight: 400;
    backdrop-filter: blur(4px);
}
.highlight:hover .copy-btn {
    opacity: 0.6;
}
.copy-btn:hover {
    opacity: 1 !important;
    background: var(--primary);
    color: var(--bg);
    border-color: var(--primary);
    transform: scale(1.05);
}
.copy-btn:active {
    transform: scale(0.92);
}
.copy-btn.copied {
    background: var(--primary);
    color: var(--bg);
    opacity: 1 !important;
    animation: pop 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes pop {
    0% {
        transform: scale(0.8);
    }
    50% {
        transform: scale(1.15);
    }
    100% {
        transform: scale(1);
    }
}
.highlight .kn {
    color: var(--syn-kw);
    font-weight: 700;
}
.highlight .k {
    color: var(--syn-kw);
    font-weight: 700;
}
.highlight .nc {
    color: var(--syn-class);
    font-weight: 600;
}
.highlight .sh {
    color: var(--syn-str);
}
.highlight .s {
    color: var(--syn-str);
}
.highlight .c1 {
    color: var(--syn-comment);
    font-style: italic;
    font-weight: 300;
}
.highlight .nd {
    color: var(--syn-decorator);
    font-weight: 700;
}
.highlight .nf {
    color: var(--syn-fn);
    font-weight: 600;
}
.highlight .p {
    color: var(--text);
}
.highlight .o {
    color: var(--syn-operator);
}
.highlight .mi {
    color: var(--syn-number);
}
.highlight .nb {
    color: var(--syn-variable);
}
.highlight .vc {
    color: var(--syn-variable);
}
.code-expand-btn {
    display: block !important;
    margin: 12px auto !important;
    padding: 8px 24px !important;
    background: var(--code-bg) !important;
    border: 1px solid var(--border) !important;
    border-radius: 30px !important;
    cursor: pointer !important;
    color: var(--text) !important;
    font-family: var(--font-family) !important;
    font-size: 0.85rem !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06) !important;
    text-align: center !important;
    width: auto !important;
    min-width: 140px !important;
}
.code-expand-btn:hover {
    background: var(--primary) !important;
    color: var(--bg) !important;
    border-color: var(--primary) !important;
    transform: translateY(-1px) !important;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12) !important;
}
.code-expand-btn:active {
    transform: scale(0.96) !important;
}
.code-fade {
    position: absolute;
    bottom: 60px;
    left: 0;
    right: 0;
    height: 80px;
    background: linear-gradient(to bottom, transparent, var(--bg));
    pointer-events: none;
    transition: opacity 0.4s ease;
    border-radius: 0 0 var(--radius) var(--radius);
    z-index: 1;
}