.writeup-hover-menu {
    position: fixed;
    top: 20px;
    left: max(8px, calc((100vw - 1180px) / 2 - 180px));
    z-index: 31;
    display: inline-flex;
    align-items: flex-start;
}

.writeup-menu-toggle {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    border: 1px solid #1a1a1a;
    background: #e3e4e2;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    cursor: pointer;
}

.writeup-menu-toggle img {
    width: 28px;
    height: 28px;
}

.writeup-menu-toggle:focus-visible {
    outline: 2px solid #000000;
    outline-offset: 3px;
}

.writeup-menu-panel {
    position: absolute;
    top: 28px;
    right: calc(100% + 12px);
    width: min(350px, calc(100vw - 32px));
    max-height: 68vh;
    overflow: auto;
    border: 1px solid rgba(18, 18, 18, 0.25);
    border-radius: 14px;
    background: rgba(236, 238, 235, 0.98);
    box-shadow: 0 14px 36px rgba(0, 0, 0, 0.18);
    backdrop-filter: blur(8px);
    padding: 14px;
    opacity: 0;
    transform: translateX(10px) scale(0.98);
    transform-origin: top right;
    pointer-events: none;
    transition: opacity 0.22s ease, transform 0.22s ease;
}

.writeup-hover-menu.is-open .writeup-menu-panel,
.writeup-hover-menu:hover .writeup-menu-panel,
.writeup-hover-menu:focus-within .writeup-menu-panel {
    opacity: 1;
    transform: translateX(0) scale(1);
    pointer-events: auto;
}

.writeup-menu-title {
    margin: 0 0 10px;
    font-family: 'DMSerifText', 'Times New Roman', serif;
    font-size: 1.2rem;
    color: #111111;
}

.writeup-menu-section + .writeup-menu-section {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(0, 0, 0, 0.16);
}

.writeup-menu-section h4 {
    margin: 0 0 8px;
    font-family: 'ShareTechMono', 'Courier New', monospace;
    font-size: 0.84rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #223048;
}

.writeup-menu-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    gap: 6px;
}

.writeup-menu-link {
    display: block;
    border: 1px solid rgba(0, 0, 0, 0.12);
    border-radius: 10px;
    padding: 8px 10px;
    text-decoration: none;
    color: #111111;
    font-size: 1.03rem;
    line-height: 1.3;
    background: rgba(255, 255, 255, 0.65);
}

.writeup-menu-link:hover,
.writeup-menu-link:focus-visible {
    border-color: rgba(0, 0, 0, 0.35);
    background: rgba(255, 255, 255, 0.9);
}

.writeup-menu-link.is-current {
    border-color: #00b04f;
    box-shadow: 0 0 0 2px rgba(0, 176, 79, 0.35);
    background: rgba(0, 176, 79, 0.12);
    font-weight: 700;
}

body.dark-mode .writeup-menu-toggle {
    background: #172130;
    border-color: #8fa6ca;
}

body.dark-mode .writeup-menu-panel {
    border-color: rgba(143, 166, 202, 0.42);
    background: rgba(19, 28, 40, 0.95);
    box-shadow: 0 14px 36px rgba(2, 5, 11, 0.44);
}

body.dark-mode .writeup-menu-title {
    color: #e6eefc;
}

body.dark-mode .writeup-menu-section + .writeup-menu-section {
    border-top-color: rgba(143, 166, 202, 0.3);
}

body.dark-mode .writeup-menu-section h4 {
    color: #b7c8e2;
}

body.dark-mode .writeup-menu-link {
    border-color: rgba(143, 166, 202, 0.3);
    background: rgba(28, 40, 57, 0.88);
    color: #d7e3f5;
}

body.dark-mode .writeup-menu-link:hover,
body.dark-mode .writeup-menu-link:focus-visible {
    border-color: rgba(183, 200, 226, 0.66);
    background: rgba(37, 52, 72, 0.96);
}

body.dark-mode .writeup-menu-link.is-current {
    border-color: #4ecb87;
    box-shadow: 0 0 0 2px rgba(78, 203, 135, 0.45);
    background: rgba(78, 203, 135, 0.16);
    color: #e9fff3;
    font-weight: 700;
}

.writeup-hover-menu.open-right .writeup-menu-panel {
    right: auto;
    left: calc(100% + 12px);
    transform: translateX(-10px) scale(0.98);
    transform-origin: top left;
}

.writeup-hover-menu.open-right.is-open .writeup-menu-panel,
.writeup-hover-menu.open-right:hover .writeup-menu-panel,
.writeup-hover-menu.open-right:focus-within .writeup-menu-panel {
    transform: translateX(0) scale(1);
}

@media (max-width: 900px) {
    .writeup-hover-menu {
        top: 74px;
        left: 12px;
    }

    .writeup-menu-panel,
    .writeup-hover-menu.open-right .writeup-menu-panel {
        right: auto;
        left: calc(100% + 10px);
        width: min(330px, calc(100vw - 82px));
    }
}