:root {
    --ink-strong: #08111f;
    --ink-soft: #4c5a6a;
    --line: rgba(8, 17, 31, 0.1);
    --surface: rgba(255, 255, 255, 0.9);
    --shadow: 0 24px 60px rgba(8, 17, 31, 0.12);
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    min-height: 100%;
}

body {
    font-family: "Noto Sans SC", sans-serif;
    color: var(--ink-strong);
    background:
        radial-gradient(circle at top left, rgba(0, 102, 255, 0.14), transparent 28%),
        radial-gradient(circle at top right, rgba(25, 194, 200, 0.14), transparent 22%),
        linear-gradient(180deg, #f4f8ff 0%, #f8fafc 45%, #eef2f7 100%);
}

.share-shell {
    width: min(1120px, calc(100vw - 32px));
    margin: 0 auto;
    padding: 36px 0 56px;
}

.share-stage {
    position: relative;
}

.share-stage::before,
.share-stage::after {
    content: "";
    position: absolute;
    z-index: 0;
    border-radius: 999px;
    filter: blur(18px);
    opacity: 0.45;
}

.share-stage::before {
    top: -18px;
    left: 40px;
    width: 132px;
    height: 132px;
    background: rgba(37, 99, 235, 0.2);
}

.share-stage::after {
    right: 52px;
    bottom: -10px;
    width: 148px;
    height: 148px;
    background: rgba(20, 184, 166, 0.18);
}

.share-article {
    position: relative;
    z-index: 1;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.74);
    border-radius: 32px;
    background: var(--surface);
    box-shadow: var(--shadow);
    backdrop-filter: blur(20px);
}

.share-article section {
    margin: 0 auto;
}

.share-article img {
    max-width: 100%;
}

.share-article .md2-mermaid svg {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
}

.share-footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
    margin: 18px 0 0;
    text-align: center;
    color: var(--ink-soft);
    font-size: 13px;
    letter-spacing: 0.04em;
}

.share-footer-meta a {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px solid rgba(76, 90, 106, 0.28);
}

.share-footer-meta {
    margin-top: 2px;
}

.share-footer-meta a:hover {
    border-bottom-color: rgba(8, 17, 31, 0.42);
}

.share-footer-qr {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.share-footer-qr-code {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 188px;
    min-height: 188px;
    padding: 10px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(8, 17, 31, 0.08);
    box-shadow: 0 16px 30px rgba(8, 17, 31, 0.08);
    color: var(--ink-soft);
    font-size: 12px;
    line-height: 1.6;
}

.share-footer-qr-code svg {
    display: block;
    width: 168px;
    height: 168px;
}

.share-footer-caption {
    margin: 0;
    color: var(--ink-soft);
    font-size: 12px;
}

.mermaid-error {
    padding: 14px 16px;
    border-radius: 14px;
    background: rgba(239, 68, 68, 0.08);
    color: #991b1b;
    font-size: 13px;
}

@media (max-width: 768px) {
    .share-shell {
        width: min(100vw - 20px, 1120px);
        padding: 16px 0 28px;
    }

    .share-article {
        padding: 10px;
        border-radius: 22px;
    }
}