/* ========================================
   IDE / Notebook aesthetic
   Jupyter + editor chrome, mono-accented.
   ======================================== */

:root {
    --bg:        #0b0d10;
    --bg-2:      #0f1216;
    --panel:     #12161b;
    --panel-2:   #171c22;
    --line:      #1e2429;
    --line-2:    #262c33;
    --fg:        #e6e8eb;
    --fg-dim:    #a8afb8;
    --fg-faint:  #6b727b;
    --accent:    #7fdcc0;
    --accent-2:  #f0b37e;
    --accent-3:  #9a8cff;
    --red:       #f07178;
    --signal:    #7fdcc0;

    --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
    --sans: "Inter", ui-sans-serif, system-ui, sans-serif;

    --radius: 10px;
    --sb-w: 240px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
    background: var(--bg);
    color: var(--fg);
    font-family: var(--sans);
    font-size: 16px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    min-height: 100vh;
}
a { color: inherit; }
::selection { background: color-mix(in srgb, var(--accent) 32%, transparent); color: var(--fg); }

/* -------- shell grid -------- */
.shell {
    display: grid;
    grid-template-columns: var(--sb-w) 1fr;
    min-height: 100vh;
}
@media (max-width: 880px) {
    .shell { grid-template-columns: 1fr; }
}

.shell__hamburger {
    display: none;
    position: fixed;
    top: 10px;
    left: 10px;
    z-index: 40;
    width: 38px;
    height: 38px;
    background: var(--panel);
    border: 1px solid var(--line-2);
    border-radius: 6px;
    cursor: pointer;
    padding: 0;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 4px;
}
.shell__hamburger span {
    display: block;
    width: 16px;
    height: 1.5px;
    background: var(--fg-dim);
    border-radius: 1px;
}
@media (max-width: 880px) {
    .shell__hamburger { display: flex; }
}

/* -------- sidebar -------- */
.sidebar {
    border-right: 1px solid var(--line);
    background: var(--panel);
    padding: 18px 14px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    font-family: var(--mono);
    font-size: 12.5px;
    display: flex;
    flex-direction: column;
}
@media (max-width: 880px) {
    .sidebar {
        position: fixed;
        inset: 0 auto 0 0;
        width: min(280px, 80vw);
        z-index: 35;
        transform: translateX(-100%);
        transition: transform .2s ease;
        box-shadow: 0 20px 60px rgba(0,0,0,.5);
    }
    .sidebar.is-open { transform: translateX(0); }
}
.sb-head {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 4px 6px 14px;
    border-bottom: 1px dashed var(--line-2);
    margin-bottom: 12px;
}
.sb-head .avatar {
    position: relative;
    width: 36px;
    height: 36px;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--line-2);
    background: var(--bg-2);
    flex: 0 0 auto;
    display: block;
    text-decoration: none;
}
.sb-head .avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.sb-head .avatar .status-dot {
    position: absolute;
    right: -2px;
    bottom: -2px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid var(--panel);
    box-shadow: 0 0 0 1px var(--line-2);
}
.sb-head__title {
    color: var(--fg);
    font-weight: 600;
}
.sb-head__sub {
    color: var(--fg-faint);
    font-size: 11px;
}

.sb-section {
    color: var(--fg-faint);
    text-transform: uppercase;
    letter-spacing: 0.12em;
    font-size: 10px;
    padding: 12px 6px 6px;
}
.sb-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 5px 6px;
    border-radius: 6px;
    color: var(--fg-dim);
    cursor: pointer;
    text-decoration: none;
    user-select: none;
    transition: background .12s, color .12s;
}
.sb-item:hover { background: var(--panel-2); color: var(--fg); }
.sb-item--active {
    background: color-mix(in srgb, var(--accent) 14%, transparent);
    color: var(--fg);
}
.sb-item--static { cursor: default; }
.sb-item--static:hover { background: transparent; color: var(--fg-dim); }
.sb-chev {
    color: var(--fg-faint);
    width: 10px;
    display: inline-block;
    text-align: center;
}
.sb-chev--live { color: var(--accent); }
.sb-lbl { flex: 1; }
.sb-count {
    color: var(--fg-faint);
    font-size: 10px;
}

.sb-foot {
    margin-top: auto;
    padding: 14px 6px 4px;
    font-size: 11px;
    color: var(--fg-faint);
    line-height: 1.5;
    border-top: 1px dashed var(--line-2);
}
.sb-foot a {
    color: var(--fg-dim);
    text-decoration: none;
    display: block;
    padding: 2px 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sb-foot a:hover { color: var(--accent); }

/* -------- main area -------- */
.main { min-width: 0; }

.tabs {
    position: sticky;
    top: 0;
    z-index: 5;
    display: flex;
    background: var(--bg-2);
    border-bottom: 1px solid var(--line);
    font-family: var(--mono);
    font-size: 12px;
    color: var(--fg-dim);
    overflow-x: auto;
    scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
    padding: 10px 16px;
    border-right: 1px solid var(--line);
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: inherit;
    white-space: nowrap;
    flex-shrink: 0;
}
.tab:hover { color: var(--fg); }
.tab--active {
    background: var(--bg);
    color: var(--fg);
    border-bottom: 1px solid var(--bg);
    margin-bottom: -1px;
}
.tab__glyph { color: var(--accent); }
.tab__glyph--mint { color: var(--accent); }
.tab__glyph--amber { color: var(--accent-2); }
.tab__glyph--lilac { color: var(--accent-3); }

.crumbs {
    padding: 10px 20px;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--fg-faint);
    border-bottom: 1px solid var(--line);
    background: var(--bg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}
.crumbs__path { color: var(--fg-faint); }
.crumbs__path strong { color: var(--fg-dim); font-weight: 500; }
.crumbs__right { display: flex; gap: 14px; align-items: center; }
.crumbs kbd {
    font-family: var(--mono);
    font-size: 10px;
    padding: 1px 5px;
    border: 1px solid var(--line-2);
    border-radius: 3px;
    color: var(--fg-dim);
    background: var(--panel);
}

.content {
    padding: 40px clamp(20px, 5vw, 72px) 80px;
    max-width: 1100px;
}

/* -------- cells -------- */
.cell {
    margin: 0 0 28px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel);
    overflow: hidden;
}
.cell-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 14px;
    border-bottom: 1px solid var(--line);
    font-family: var(--mono);
    font-size: 11px;
    color: var(--fg-faint);
    background: var(--panel-2);
    gap: 10px;
    flex-wrap: wrap;
}
.cell-head__left {
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 0;
}
.cell-head__in { color: var(--accent); }
.cell-body {
    padding: 26px 28px;
}

/* -------- hero -------- */
.hero-grid {
    display: grid;
    grid-template-columns: 220px 1fr;
    grid-template-areas:
        "portrait intro"
        "demo demo";
    gap: 28px 32px;
    align-items: start;
}
.hero-grid__portrait { grid-area: portrait; }
.hero-grid__intro { grid-area: intro; padding-top: 4px; }
.hero-grid__demo { grid-area: demo; margin-top: 4px; }
@media (max-width: 780px) {
    .hero-grid { grid-template-columns: 140px 1fr; gap: 20px; }
}
@media (max-width: 520px) {
    .hero-grid {
        grid-template-columns: 1fr;
        grid-template-areas: "portrait" "intro" "demo";
    }
    .hero-grid__portrait { max-width: 200px; }
}

.hero-portrait {
    position: relative;
    aspect-ratio: 1 / 1;
    border-radius: 14px;
    overflow: hidden;
    border: 1px solid var(--line-2);
    background:
        radial-gradient(120% 120% at 20% 0%, color-mix(in srgb, var(--accent) 40%, transparent) 0%, transparent 55%),
        radial-gradient(120% 120% at 100% 100%, color-mix(in srgb, var(--accent-3) 40%, transparent) 0%, transparent 55%),
        var(--bg-2);
}
.hero-portrait img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
.hero-portrait .frame-tag {
    position: absolute;
    top: 8px;
    left: 8px;
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--fg-faint);
    background: color-mix(in srgb, var(--panel) 80%, transparent);
    padding: 3px 8px;
    border-radius: 4px;
    border: 1px solid var(--line);
}
.hero-portrait .frame-status {
    position: absolute;
    bottom: 8px;
    left: 8px;
    right: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--mono);
    font-size: 10px;
    color: var(--fg-faint);
}
.hero-portrait .frame-status .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 20%, transparent);
    display: inline-block;
    margin-right: 6px;
    vertical-align: middle;
}

.kicker {
    font-family: var(--mono);
    font-size: 11.5px;
    color: var(--accent);
    letter-spacing: 0.08em;
}
.hero h1 {
    font-size: clamp(30px, 4.4vw, 52px);
    line-height: 1.04;
    letter-spacing: -0.03em;
    margin: 10px 0 14px;
    font-weight: 600;
}
.hero h1 .muted {
    color: var(--fg-faint);
    font-weight: 400;
}
.hero h1 .name {
    background: linear-gradient(92deg, var(--accent), var(--accent-3));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero p {
    color: var(--fg-dim);
    font-size: 15.5px;
    line-height: 1.6;
    max-width: 58ch;
    margin: 0 0 20px;
}

.pill-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 14px;
    font-family: var(--mono);
    font-size: 11.5px;
}
.pill {
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid var(--line-2);
    color: var(--fg-dim);
}
.pill .dot {
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    margin-right: 6px;
    vertical-align: middle;
}

.cta {
    display: inline-flex;
    gap: 10px;
    margin-top: 22px;
    flex-wrap: wrap;
}
.btn {
    font-family: var(--mono);
    font-size: 12.5px;
    padding: 10px 16px;
    border-radius: 8px;
    border: 1px solid var(--line-2);
    background: transparent;
    color: var(--fg);
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: border-color .12s, background .12s, filter .12s;
}
.btn:hover { border-color: var(--fg-dim); }
.btn--primary {
    background: var(--accent);
    color: #07140f;
    border-color: transparent;
    font-weight: 600;
}
.btn--primary:hover { filter: brightness(1.08); }

/* -------- live demo -------- */
.demo {
    position: relative;
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--bg-2);
    padding: 16px;
}
.demo h4 {
    margin: 0;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--fg-faint);
    font-weight: 500;
    display: flex;
    justify-content: space-between;
}
.demo h4 .live { color: var(--accent); }
.demo h4 .live::before {
    content: "";
    display: inline-block;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    margin-right: 6px;
    animation: pulse 1.4s ease-in-out infinite;
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .35; }
}
.demo svg {
    width: 100%;
    height: 200px;
    display: block;
    margin-top: 6px;
}
.demo .stats {
    display: flex;
    gap: 18px;
    font-family: var(--mono);
    font-size: 11px;
    color: var(--fg-dim);
    margin-top: 10px;
    flex-wrap: wrap;
}
.demo .stats b {
    color: var(--fg);
    font-weight: 500;
}

/* -------- markdown blocks -------- */
.md h2 {
    font-size: 22px;
    letter-spacing: -0.01em;
    margin: 0 0 4px;
    font-weight: 600;
    color: var(--fg);
}
.md .h2-tag {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--accent);
    letter-spacing: 0.08em;
}
.md p {
    color: var(--fg-dim);
    font-size: 14.5px;
    line-height: 1.65;
    max-width: 70ch;
}
.md .rule {
    height: 1px;
    background: var(--line);
    margin: 28px 0;
    border: 0;
}
.md a {
    color: var(--accent);
    text-decoration: underline;
    text-decoration-color: color-mix(in srgb, var(--accent) 40%, transparent);
    text-underline-offset: 3px;
}
.md a:hover { color: var(--fg); text-decoration-color: var(--accent); }
.md ul, .md ol { margin: 0.75rem 0 1.35rem 1.4rem; color: var(--fg-dim); }
.md li { margin-bottom: 0.4rem; }
.md strong, .md b { color: var(--fg); font-weight: 600; }
.md h3 {
    font-size: 17px;
    color: var(--fg);
    font-weight: 600;
    margin: 22px 0 8px;
    letter-spacing: -0.01em;
}
.md blockquote {
    border-left: 2px solid var(--accent);
    padding: 0.25rem 0 0.25rem 1.1rem;
    margin: 1.25rem 0;
    font-style: italic;
    color: var(--fg-dim);
}
.md code {
    font-family: var(--mono);
    font-size: 0.88em;
    background: var(--bg-2);
    padding: 0.12em 0.4em;
    border: 1px solid var(--line);
    border-radius: 3px;
    color: var(--accent);
}
.md pre {
    background: var(--bg-2);
    color: var(--fg);
    border: 1px solid var(--line);
    border-left: 2px solid var(--accent);
    border-radius: 6px;
    padding: 14px 16px;
    overflow-x: auto;
    margin: 18px 0;
    font-size: 13px;
    line-height: 1.55;
    font-family: var(--mono);
}
.md pre code {
    background: transparent;
    color: inherit;
    padding: 0;
    border: 0;
}
.md table {
    width: 100%;
    border-collapse: collapse;
    margin: 18px 0;
    font-size: 13.5px;
    font-family: var(--mono);
}
.md th, .md td {
    padding: 8px 10px;
    text-align: left;
    border-bottom: 1px solid var(--line);
}
.md th {
    background: var(--bg-2);
    color: var(--fg);
    font-weight: 500;
    text-transform: uppercase;
    font-size: 10.5px;
    letter-spacing: 0.12em;
}

/* -------- projects -------- */
.projects {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-top: 12px;
}
@media (max-width: 780px) {
    .projects { grid-template-columns: 1fr; }
}
.proj {
    border: 1px solid var(--line);
    background: var(--bg-2);
    border-radius: 10px;
    padding: 18px 18px 16px;
    position: relative;
    transition: border-color .15s ease, transform .15s ease;
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.proj:hover {
    border-color: var(--line-2);
    transform: translateY(-1px);
}
.proj__id {
    font-family: var(--mono);
    font-size: 10.5px;
    color: var(--fg-faint);
    letter-spacing: 0.08em;
}
.proj h3 {
    margin: 4px 0 6px;
    font-size: 17px;
    letter-spacing: -0.01em;
    font-weight: 600;
    color: var(--fg);
}
.proj__status {
    font-family: var(--mono);
    font-size: 10.5px;
    color: var(--accent);
}
.proj p {
    color: var(--fg-dim);
    font-size: 13.5px;
    line-height: 1.55;
    margin: 8px 0 12px;
}
.proj__stack {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    font-family: var(--mono);
    font-size: 10.5px;
}
.proj__stack span {
    padding: 2px 7px;
    border: 1px solid var(--line-2);
    border-radius: 4px;
    color: var(--fg-dim);
}
.proj__metrics {
    display: flex;
    gap: 14px;
    margin-top: 12px;
    padding-top: 10px;
    border-top: 1px dashed var(--line-2);
    font-family: var(--mono);
    font-size: 11px;
    color: var(--fg-faint);
    flex-wrap: wrap;
}
.proj__metrics b {
    color: var(--accent);
    font-weight: 600;
}
.proj__more {
    margin-top: 12px;
    font-family: var(--mono);
    font-size: 11.5px;
    color: var(--accent);
    cursor: pointer;
    border: 0;
    background: transparent;
    padding: 0;
    align-self: flex-start;
    text-decoration: none;
}
.proj__more:hover { text-decoration: underline; }
.proj__more::after { content: ' ↓'; }
.proj__detail {
    border-top: 1px dashed var(--line-2);
    margin-top: 12px;
    padding-top: 12px;
    font-size: 13px;
    color: var(--fg-dim);
    line-height: 1.6;
    display: none;
}
.proj__detail b { color: var(--fg); font-weight: 600; }
.proj--open .proj__detail { display: block; }
.proj--open .proj__more::after { content: ' ↑'; }

/* -------- stack table -------- */
.stack-grid {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 8px 24px;
    font-family: var(--mono);
    font-size: 13px;
    margin-top: 14px;
}
@media (max-width: 640px) {
    .stack-grid { grid-template-columns: 1fr; gap: 4px 0; }
}
.stack-grid .k {
    color: var(--fg-faint);
    padding-top: 6px;
    border-top: 1px solid var(--line);
}
.stack-grid .v {
    color: var(--fg-dim);
    padding-top: 6px;
    border-top: 1px solid var(--line);
    line-height: 1.7;
}
.stack-grid .v b { color: var(--fg); font-weight: 500; }

.code {
    font-family: var(--mono);
    font-size: 13px;
    background: var(--bg-2);
    padding: 18px 20px;
    border-radius: 8px;
    color: var(--fg-dim);
    line-height: 1.6;
    overflow-x: auto;
    border: 1px solid var(--line);
    margin-top: 14px;
    white-space: pre;
}
.code .kw { color: var(--accent-3); }
.code .st { color: var(--accent); }
.code .nm { color: var(--accent-2); }
.code .cm { color: var(--fg-faint); font-style: italic; }

/* -------- timeline -------- */
.tl {
    position: relative;
    margin-top: 14px;
    padding-left: 18px;
}
.tl::before {
    content: "";
    position: absolute;
    left: 5px;
    top: 6px;
    bottom: 6px;
    width: 1px;
    background: var(--line-2);
}
.tl .row {
    position: relative;
    padding: 6px 0 22px;
}
.tl .row::before {
    content: "";
    position: absolute;
    left: -17px;
    top: 10px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--bg);
    border: 1px solid var(--accent);
}
.tl .row.current::before {
    background: var(--accent);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 22%, transparent);
}
.tl .when {
    font-family: var(--mono);
    font-size: 11.5px;
    color: var(--fg-faint);
    letter-spacing: 0.03em;
}
.tl .what {
    font-size: 14.5px;
    color: var(--fg);
    margin-top: 2px;
    font-weight: 500;
}
.tl .what em {
    color: var(--fg-dim);
    font-style: italic;
    font-weight: 400;
}
.tl .where {
    color: var(--fg-dim);
    font-size: 13px;
    line-height: 1.55;
    margin-top: 4px;
    max-width: 58ch;
}
.tl .chips {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
    font-family: var(--mono);
    font-size: 10.5px;
}
.tl .chips span {
    padding: 2px 7px;
    border: 1px solid var(--line-2);
    border-radius: 4px;
    color: var(--fg-faint);
}

/* -------- contact -------- */
.contact {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin-top: 14px;
}
@media (max-width: 640px) {
    .contact { grid-template-columns: 1fr; }
}
.contact__row {
    border: 1px solid var(--line);
    background: var(--bg-2);
    border-radius: 8px;
    padding: 14px 16px;
    font-family: var(--mono);
    font-size: 13px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}
.contact__row .k {
    color: var(--fg-faint);
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.contact__row .v { color: var(--fg); margin-top: 2px; }
.contact__row .copy {
    font-size: 11px;
    color: var(--accent);
    text-decoration: none;
    background: transparent;
    border: 1px solid var(--line-2);
    padding: 4px 8px;
    border-radius: 5px;
    cursor: pointer;
    font-family: inherit;
}
.contact__row .copy:hover { border-color: var(--accent); }

/* -------- blog list (inside cell) -------- */
.post-list {
    display: flex;
    flex-direction: column;
    margin-top: 14px;
    border-top: 1px solid var(--line);
}
.post-preview {
    display: grid;
    grid-template-columns: 130px 1fr;
    gap: 18px;
    padding: 16px 4px;
    color: var(--fg);
    text-decoration: none;
    border-bottom: 1px solid var(--line);
    transition: background .15s;
}
.post-preview:hover {
    background: var(--bg-2);
}
.post-preview__date {
    font-family: var(--mono);
    font-size: 12px;
    color: var(--fg-faint);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding-top: 4px;
}
.post-preview__date::before {
    content: '▸ ';
    color: var(--accent);
}
.post-preview__title {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 4px;
    line-height: 1.3;
    color: var(--fg);
    letter-spacing: -0.005em;
}
.post-preview__summary {
    font-size: 13.5px;
    color: var(--fg-dim);
    line-height: 1.55;
    margin: 0;
}
.blog-empty {
    font-family: var(--mono);
    color: var(--fg-faint);
    font-size: 12.5px;
    padding: 28px 0;
    border-top: 1px dashed var(--line);
    margin-top: 14px;
}
.blog-empty::before { content: '// '; color: var(--fg-faint); }

/* -------- article / page body -------- */
.article__meta {
    font-family: var(--mono);
    font-size: 11.5px;
    color: var(--fg-faint);
    letter-spacing: 0.06em;
    margin-bottom: 10px;
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}
.article__meta time::before { content: 'published · '; color: var(--fg-faint); opacity: 0.7; }
.article__title, .page__title {
    font-size: clamp(26px, 3.4vw, 38px);
    letter-spacing: -0.02em;
    font-weight: 600;
    line-height: 1.1;
    color: var(--fg);
    margin: 0 0 14px;
}
.article__tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin: 10px 0 0;
}
.tag {
    font-family: var(--mono);
    font-size: 10.5px;
    padding: 2px 7px;
    border: 1px solid var(--line-2);
    border-radius: 4px;
    color: var(--fg-dim);
    text-decoration: none;
    letter-spacing: 0.02em;
    transition: border-color .12s, color .12s;
}
.tag::before { content: '#'; color: var(--fg-faint); }
.tag:hover { border-color: var(--accent); color: var(--accent); }

/* -------- doc footer -------- */
.doc-footer {
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px dashed var(--line-2);
    font-family: var(--mono);
    font-size: 11.5px;
    color: var(--fg-faint);
}
.doc-footer__socials {
    display: flex;
    gap: 8px;
    margin-bottom: 14px;
    flex-wrap: wrap;
}
.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 6px;
    border: 1px solid var(--line-2);
    color: var(--fg-dim);
    text-decoration: none;
    transition: color .12s, border-color .12s, background .12s;
}
.social-icon:hover {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--panel-2);
}
.social-icon svg {
    width: 14px;
    height: 14px;
    fill: currentColor;
}
.doc-footer__meta {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 10px;
}
.doc-footer__legal { display: flex; gap: 12px; }
.doc-footer__legal a {
    color: var(--fg-dim);
    text-decoration: none;
}
.doc-footer__legal a:hover { color: var(--accent); }

/* -------- polish -------- */
a:focus-visible,
button:focus-visible,
select:focus-visible,
.sb-item:focus-visible,
.tab:focus-visible,
.proj:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 4px;
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *, *::before, *::after {
        transition: none !important;
        animation: none !important;
    }
}

/* -------- light theme -------- */
[data-theme="light"] {
    --bg:        #f7f8fa;
    --bg-2:      #eef1f5;
    --panel:     #ffffff;
    --panel-2:   #f2f4f8;
    --line:      #e2e6ec;
    --line-2:    #cfd5de;
    --fg:        #1a1d21;
    --fg-dim:    #4b525a;
    --fg-faint:  #7a828c;
    --accent:    #1f8f72;
    --accent-2:  #c06a2b;
    --accent-3:  #6a4ad1;
    --red:       #c73540;
    --signal:    #1f8f72;
}
[data-theme="light"] body { color: var(--fg); }
[data-theme="light"] .frame-status,
[data-theme="light"] .hero-portrait { background: var(--panel-2); }

/* -------- theme toggle button -------- */
.theme-toggle {
    background: var(--panel);
    color: var(--fg-dim);
    border: 1px solid var(--line-2);
    border-radius: 4px;
    padding: 2px 8px;
    font-family: var(--mono);
    font-size: 10px;
    cursor: pointer;
    line-height: 1.6;
}
.theme-toggle:hover { color: var(--fg); border-color: var(--fg-faint); }
.theme-toggle__icon { display: inline-block; margin-right: 4px; }

/* -------- command palette (⌘K) -------- */
.cmdk-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
    z-index: 180;
    display: none;
    backdrop-filter: blur(2px);
}
[data-theme="light"] .cmdk-backdrop { background: rgba(20, 24, 30, 0.35); }
.cmdk-backdrop.is-open { display: block; }
.cmdk {
    position: fixed;
    top: 12vh;
    left: 50%;
    transform: translateX(-50%);
    width: min(560px, calc(100vw - 32px));
    max-height: 70vh;
    background: var(--panel);
    border: 1px solid var(--line-2);
    border-radius: 10px;
    z-index: 200;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
    display: none;
    flex-direction: column;
    overflow: hidden;
    font-family: var(--mono);
}
.cmdk.is-open { display: flex; }
.cmdk__input {
    width: 100%;
    background: transparent;
    color: var(--fg);
    border: 0;
    border-bottom: 1px solid var(--line);
    padding: 14px 18px;
    font-family: var(--mono);
    font-size: 14px;
    outline: none;
}
.cmdk__input::placeholder { color: var(--fg-faint); }
.cmdk__list {
    list-style: none;
    margin: 0;
    padding: 6px;
    overflow-y: auto;
    max-height: calc(70vh - 54px);
}
.cmdk__item {
    padding: 10px 12px;
    border-radius: 6px;
    cursor: pointer;
    color: var(--fg-dim);
    font-size: 13px;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    align-items: center;
}
.cmdk__item:hover,
.cmdk__item.is-active {
    background: var(--panel-2);
    color: var(--fg);
}
.cmdk__item-kind {
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--fg-faint);
}
.cmdk__empty {
    padding: 16px 18px;
    color: var(--fg-faint);
    font-size: 12px;
}

/* -------- print -------- */
@media print {
    body {
        background: #fff !important;
        color: #111 !important;
        font-size: 10.5pt;
    }
    .sidebar, .tabs, .crumbs, .cell-head, .hero-grid__demo,
    .proj__more, .proj__detail, .cta, .shell__hamburger,
    .doc-footer__socials {
        display: none !important;
    }
    .shell { grid-template-columns: 1fr !important; }
    .main { background: #fff !important; }
    .content { padding: 0 !important; max-width: none; }
    .cell {
        border: 0 !important;
        background: #fff !important;
        margin-bottom: 18px;
    }
    .cell-body { padding: 0 !important; }
    .hero-grid {
        grid-template-columns: 1fr !important;
        gap: 10px !important;
    }
    .hero-grid__portrait { display: none !important; }
    .proj {
        break-inside: avoid;
        border: 1px solid #ccc !important;
        background: #fff !important;
    }
    .pill, .proj__stack span, .tl .chips span,
    .tag, .stack-grid .k, .stack-grid .v {
        border-color: #ccc !important;
        color: #333 !important;
        background: #fafafa !important;
    }
    h1, h2, h3, .article__title, .page__title { color: #111 !important; }
    a { color: #111 !important; text-decoration: underline; }
    .doc-footer { border-color: #ccc !important; }
}