/* ==========================================================================
   Design tokens.

   Modelled on apple.com: a tinted page ground, borderless rounded cards for
   contrast, and Apple's type metrics (17px body, -0.022em tracking, tight
   negative tracking on display sizes).

   The site is light only, the way apple.com is. Dark bands (.stage-dark,
   .tile-dark) are a deliberate design device, not a theme response.
   ========================================================================== */
:root {
    --bg: #f5f5f7;
    --card: #ffffff;
    --card-2: #f5f5f7;
    --chip-bg: #f0f0f2;
    --field-bg: #f5f5f7;
    --text: #1d1d1f;
    /* Darker than Apple's #6e6e73/#86868b pair: those fall to 3.3-3.6:1 on a
       near-white ground, under the 4.5:1 needed for small text. */
    --text-dim: #515154;
    --text-faint: #6e6e73;
    --hairline: rgba(0, 0, 0, 0.1);
    --btn-border: rgba(0, 0, 0, 0.24);
    --btn-hover: rgba(0, 0, 0, 0.05);
    --link: #0066cc;
    --cta: #0071e3;
    --cta-hover: #0077ed;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
    --tip-bg: #1d1d1f;
    --tip-fg: #ffffff;
    --green: #1a7f37;
    --red: #cf222e;
    --purple: #8250df;
    /* Empty-day cells must clear the panel they sit on (--card). */
    --l0: #e1e4e8;
    --l1: #9be9a8;
    --l2: #40c463;
    --l3: #30a14e;
    --l4: #216e39;
    --syn-comment: var(--text-faint);
    --syn-keyword: #1a63c4;
    --syn-string: #0e7a52;
    --syn-number: #b03a76;
    --syn-title: #a6500f;
    --syn-literal: #6b4fc9;

    /* Stage grounds. apple.com stacks full-bleed bands and alternates these
       three; the page never shows a single uniform ground. */
    --stage-a: #ffffff;
    --stage-b: #fbfbfd;
    --stage-c: #f5f5f7;
    /* The dark stage stays dark in both themes — it is a deliberate band,
       not a theme response. */
    --stage-dark: #000000;
    --stage-dark-text: #f5f5f7;
    --stage-dark-dim: #a1a1a6;
    --stage-dark-link: #2997ff;

    --r-sm: 12px;
    --r: 18px;
    --r-lg: 22px;
    /* Apple's tiles are much rounder than a normal card. */
    --r-tile: 28px;
    --pill: 980px;
    --wrap: 980px;
    --wrap-wide: 1240px;
    /* For grids whose tiles carry visuals and need the room. */
    --wrap-full: 1680px;
    --gutter: 22px;
    --section: clamp(52px, 6vw, 84px);
    --stage-pad: clamp(58px, 7vw, 104px);

    --sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text",
        "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
    --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas,
        "Liberation Mono", monospace;

    color-scheme: light;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--sans);
    font-size: 17px;
    line-height: 1.47059;
    letter-spacing: -0.022em;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.wrap {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 var(--gutter);
}

a {
    color: var(--link);
    text-decoration: none;
}
a:visited {
    color: var(--link);
}
a:hover {
    text-decoration: underline;
    text-underline-offset: 2px;
}

p {
    margin: 0 0 14px 0;
}

h1,
h2,
h3 {
    font-weight: 600;
    color: var(--text);
}

/* Display sizes track tighter, the way SF Pro Display does. Apple sets
   display type at 600, never 700 — the extra weight is what made this read
   as a generic portfolio rather than an Apple page. */
h1 {
    font-size: clamp(2.1rem, 4vw, 3rem);
    line-height: 1.08;
    letter-spacing: -0.026em;
    font-weight: 600;
    margin: 0 0 16px 0;
}

h2 {
    font-size: clamp(1.5rem, 2.2vw, 1.95rem);
    line-height: 1.12;
    letter-spacing: -0.02em;
    margin: 0;
}

h3 {
    font-size: 1.3rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
    margin: 0 0 8px 0;
}

ul {
    margin: 12px 0 0 0;
    padding-left: 20px;
}

li {
    margin-bottom: 9px;
    color: var(--text-dim);
    font-size: 0.94rem;
    line-height: 1.5;
}

li b,
li strong {
    color: var(--text);
    font-weight: 600;
}

b,
strong {
    font-weight: 600;
}

small {
    color: var(--text-dim);
    font-size: 0.82rem;
}

.meta {
    color: var(--text-faint);
}

.clear {
    clear: both;
}

/* Several components set an explicit display and are also toggled with the
   hidden attribute (.oss-toolbar, .oss-orgs, #note-subfilters, #gb-form).
   An author display always beats the UA sheet's [hidden] rule, so without
   this they stay on screen empty until their data arrives. */
[hidden] {
    display: none !important;
}

hr {
    border: none;
    border-top: 1px solid var(--hairline);
    margin: 32px 0;
}

::selection {
    background: rgba(41, 151, 255, 0.28);
}

:focus-visible {
    outline: 3px solid var(--link);
    outline-offset: 3px;
    border-radius: 6px;
}

/* Apple separates by ground colour and gaps, not rules. The legacy
   "* * *" dividers collapse into plain section spacing. */
.divider {
    height: 0;
    border: 0;
    margin: var(--section) 0 0 0;
    font-size: 0;
    line-height: 0;
    color: transparent;
}

/* ==========================================================================
   Nav — Apple's is 44px tall with 12px links
   ========================================================================== */
.topnav {
    position: sticky;
    top: 0;
    z-index: 50;
    background: color-mix(in srgb, var(--bg) 82%, transparent);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--hairline);
}

.topnav-inner {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 var(--gutter);
    height: 44px;
    display: flex;
    align-items: center;
    /* Apple spaces the nav items apart across the full bar rather than
       bunching them at the left. */
    justify-content: space-between;
    gap: 20px;
    overflow-x: auto;
    scrollbar-width: none;
}
.topnav-inner::-webkit-scrollbar {
    display: none;
}

.topnav a {
    color: var(--text-dim);
    font-size: 0.75rem;
    letter-spacing: -0.01em;
    white-space: nowrap;
    flex-shrink: 0;
    transition: color 0.2s ease;
}
.topnav a:hover {
    color: var(--text);
    text-decoration: none;
}

.nav-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}
.nav-logo img {
    width: 22px;
    height: 22px;
    border-radius: 6px;
    object-fit: cover;
    display: block;
}

h1,
h2 {
    scroll-margin-top: 76px;
}
section[id],
.section {
    scroll-margin-top: 76px;
}

/* ==========================================================================
   Stages — the core apple.com primitive.

   The page is a stack of full-bleed bands. Each one owns its ground colour,
   centres its content, and holds very little: an optional eyebrow, one
   large headline, one normal-weight subhead, and a row of blue chevron
   links. Anything denser goes in a tile inside the stage, not in the
   stage's own type.
   ========================================================================== */
.stage {
    position: relative;
    padding: var(--stage-pad) 0;
    text-align: center;
    background: var(--stage-a);
    color: var(--text);
    scroll-margin-top: 44px;
}

/* Alternating grounds. Applied per-section so the page never shows one
   uniform colour top to bottom. */
.stage-tint {
    background: var(--stage-b);
}
.stage-grey {
    background: var(--stage-c);
}

/* A permanently dark band. Overrides the text tokens locally so every
   child — headline, subhead, links — flips without theme-specific rules
   scattered through the component layer. */
.stage-dark {
    background: var(--stage-dark);
    --text: var(--stage-dark-text);
    --text-dim: var(--stage-dark-dim);
    --text-faint: #86868b;
    --link: var(--stage-dark-link);
    --card: #1d1d1f;
    --card-2: #2c2c2e;
    --chip-bg: #2c2c2e;
    --hairline: rgba(255, 255, 255, 0.12);
    --btn-border: rgba(255, 255, 255, 0.28);
    --btn-hover: rgba(255, 255, 255, 0.1);
    --shadow: none;
    color: var(--stage-dark-text);
}

.stage-inner {
    max-width: var(--wrap);
    margin: 0 auto;
    padding: 0 var(--gutter);
}
.stage-inner.wide {
    max-width: var(--wrap-wide);
}

/* Widest container, with a tighter gutter to match. Three project tiles in
   the standard 1240px wrap left each one about 390px, which is too narrow
   for a tile that has to hold a chart or a diagram. */
.stage-inner.widest {
    max-width: var(--wrap-full);
    padding-left: clamp(16px, 2.2vw, 32px);
    padding-right: clamp(16px, 2.2vw, 32px);
}

/* Stage headline. Much larger than a normal h2 and set at 600 — this is
   the single biggest thing that reads as "Apple". */
.stage-title {
    font-size: clamp(2.25rem, 4.6vw, 3.5rem);
    line-height: 1.06;
    letter-spacing: -0.03em;
    font-weight: 600;
    margin: 0;
    color: var(--text);
}

/* "Experience. Where I've worked." — the statement at full contrast with
   the descriptor trailing in grey on the same line, exactly the pattern
   apple.com/store uses for its section heads. */
.section-head {
    margin-bottom: 34px;
}
.section-head h2 {
    display: inline;
    font-size: clamp(2.25rem, 4.6vw, 3.5rem);
    line-height: 1.06;
    letter-spacing: -0.03em;
    font-weight: 600;
}
.section-head h2::after {
    content: ".";
}
.head-sub {
    display: inline;
    font-size: clamp(2.25rem, 4.6vw, 3.5rem);
    line-height: 1.06;
    letter-spacing: -0.03em;
    /* Normal weight, not semibold. Apple's grey continuation is the same
       size as the statement but never as heavy. */
    font-weight: 600;
    color: var(--text-dim);
    margin-left: 0.25em;
}

/* Stage subhead — one short line under the headline, normal weight. */
.stage-sub {
    font-size: clamp(1.15rem, 2vw, 1.6rem);
    line-height: 1.25;
    letter-spacing: -0.02em;
    font-weight: 400;
    color: var(--text-dim);
    margin: 12px 0 0 0;
    max-width: 34ch;
    margin-left: auto;
    margin-right: auto;
}

/* Lead paragraphs on a stage of their own — larger than body copy, centred,
   and measured short so they read as display text rather than prose. */
.stage-lead {
    font-size: clamp(1.2rem, 2.1vw, 1.75rem);
    line-height: 1.35;
    letter-spacing: -0.02em;
    font-weight: 400;
    color: var(--text-dim);
    max-width: 44ch;
    margin: 0 auto 20px auto;
}
.stage-lead:last-of-type {
    margin-bottom: 0;
}
.stage-lead a {
    color: var(--link);
}

/* ==========================================================================
   Hero — the opening stage
   ========================================================================== */
.hero {
    background: var(--stage-a);
    color: var(--text);
    padding: clamp(80px, 11vw, 150px) 0 clamp(64px, 9vw, 112px);
    text-align: center;
}

/* The roles lead, above the name — Apple's small coloured overline. */
/* The roles lead the hero now: larger than the name's supporting copy and
   close enough to the name itself that the two read as a pair rather than a
   billboard with a caption. */
.hero-roles {
    display: block;
    font-size: clamp(1.35rem, 2.5vw, 1.9rem);
    line-height: 1.2;
    letter-spacing: -0.02em;
    font-weight: 600;
    color: var(--cta);
    margin: 0 0 10px 0;
}
.hero-roles .sep {
    color: currentColor;
    opacity: 0.5;
    padding: 0 5px;
}
.hero-roles .dim {
    color: currentColor;
}

.hero p {
    color: var(--text-dim);
    font-size: clamp(1.1rem, 1.8vw, 1.45rem);
    line-height: 1.32;
    letter-spacing: -0.02em;
    /* Wide enough that the two-clause line lands in three rows rather than
       five, which is what pushed the intro copy off a laptop screen. */
    max-width: 52ch;
    margin: 0 auto 12px auto;
}

.hero-contact {
    margin-top: 26px !important;
}
.hero-contact small {
    color: var(--text-faint);
    font-size: 0.85rem;
}

/* Long-form article header. Centred like a stage, but the title is set well
   below hero scale so it stays a headline rather than a billboard. */
.article-hero {
    padding: clamp(56px, 8vw, 104px) 0 clamp(28px, 4vw, 48px);
}
.article-hero h1 {
    font-size: clamp(2.4rem, 5.2vw, 4rem);
    margin-bottom: 0;
}
.article-hero .hero-roles {
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 16px;
}

/* ==========================================================================
   Calls to action

   Apple pairs at most one filled pill with blue chevron text links. The
   old design used five outlined pills in a row, which is why the hero read
   as a link dump rather than a stage.
   ========================================================================== */
.links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 28px;
    justify-content: center;
    align-items: center;
    margin: 28px 0 0 0 !important;
    max-width: none !important;
}

/* Default: a blue chevron text link. */
.links a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: var(--link);
    font-size: 1.0625rem;
    letter-spacing: -0.01em;
    transition: opacity 0.2s ease;
}
.links a::after {
    content: "\203A";
    font-size: 1.15em;
    line-height: 1;
    transform: translateY(-1px);
}
.links a:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}
.links a:hover::after {
    text-decoration: none;
}

/* The one filled pill. */
.links a.primary {
    background: var(--cta);
    border-radius: var(--pill);
    color: #fff;
    padding: 11px 22px;
    font-size: 1rem;
    transition: background 0.2s ease;
}
.links a.primary::after {
    content: none;
}
.links a.primary:hover {
    background: var(--cta-hover);
    text-decoration: none;
}
.links svg {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
}

/* Standalone chevron link, for use outside .links rows. */
.chev {
    color: var(--link);
    font-size: 1.0625rem;
    letter-spacing: -0.01em;
    white-space: nowrap;
}
.chev::after {
    content: " \203A";
    font-size: 1.15em;
}

/* ==========================================================================
   Tiles — the apple.com/store grid

   Two up, 12px gutters, deeply rounded, each one centring a headline over
   its own ground. Used for the shorter, list-like sections.
   ========================================================================== */
.tile-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
    text-align: left;
}

.tile {
    background: var(--card);
    border-radius: var(--r-tile);
    padding: 40px 34px;
    overflow: hidden;
}

/* A tile that leads with a centred headline, store-style. */
.tile-head {
    text-align: center;
    margin-bottom: 26px;
}
.tile-title {
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    line-height: 1.1;
    letter-spacing: -0.025em;
    font-weight: 600;
    margin: 0;
}
.tile-sub {
    font-size: 1.0625rem;
    line-height: 1.4;
    font-weight: 400;
    color: var(--text-dim);
    margin: 8px 0 0 0;
}
.tile-full {
    grid-column: 1 / -1;
}

/* auto-fit rather than a fixed two columns: two tiles sit two across, and a
   third joins the same row instead of dropping to a new one. Empty tracks
   collapse, so the count drives the layout. */
.tile-grid.auto {
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
}

/* A dark tile, for the same contrast a dark stage gives but inside the
   grid. Reuses the stage-dark token overrides. */
.tile-dark {
    background: var(--stage-dark);
    --text: var(--stage-dark-text);
    --text-dim: var(--stage-dark-dim);
    --text-faint: #86868b;
    --link: var(--stage-dark-link);
    --card-2: #2c2c2e;
    --chip-bg: #2c2c2e;
    --hairline: rgba(255, 255, 255, 0.12);
    color: var(--stage-dark-text);
}

/* ==========================================================================
   Project tiles

   Projects sit side by side rather than each taking a full stage. The tile
   is a flex column so the link row can be pinned to the bottom, keeping
   those rows aligned across tiles of differing content length.
   ========================================================================== */
.project-tile {
    display: flex;
    flex-direction: column;
    text-align: center;
}

.project-tile .project-card {
    display: flex;
    flex-direction: column;
    flex: 1 1 auto;
}

/* Down from the full display size — inside a tile this is a sub-heading. */
.project-tile .project-title {
    font-size: clamp(1.5rem, 2.4vw, 2rem);
    line-height: 1.1;
    letter-spacing: -0.025em;
    margin-bottom: 12px;
}

.project-tile .project-card p {
    font-size: 1.0625rem;
    line-height: 1.45;
    max-width: 52ch;
    margin-bottom: 14px;
}

.project-tile .project-media {
    margin: 22px 0 0;
}

/* The dark tile's own surface is already near-black, so the media panel
   lifts off it rather than sitting on the light --card-2. */
.tile-dark .project-media {
    background: rgba(255, 255, 255, 0.045);
}

/* ==========================================================================
   Video demo in a project tile

   The recording is a whole interface, so at tile width its text is far too
   small to read. It loops silently as a moving thumbnail and opens full
   size in an overlay on click, which is where it is actually watchable.
   ========================================================================== */
.video-media {
    position: relative;
    display: block;
    width: 100%;
    padding: 0;
    border: none;
    font: inherit;
    color: inherit;
    cursor: pointer;
}
.video-media video {
    width: 100%;
    height: auto;
    display: block;
}

.play-badge {
    position: absolute;
    left: 50%;
    bottom: 12px;
    transform: translateX(-50%);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px 7px 11px;
    border-radius: var(--pill);
    background: rgba(0, 0, 0, 0.62);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    color: #fff;
    font-size: 0.85rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    white-space: nowrap;
    transition: background 0.2s ease;
}
.play-badge svg {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
}
.video-media:hover .play-badge {
    background: rgba(0, 0, 0, 0.8);
}

/* ==========================================================================
   Video overlay
   ========================================================================== */
.vbox {
    position: fixed;
    inset: 0;
    z-index: 120;
    background: rgba(0, 0, 0, 0.86);
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: clamp(16px, 4vw, 56px);
}
.vbox video {
    width: 100%;
    max-width: 1400px;
    max-height: 100%;
    border-radius: var(--r);
    background: #000;
    display: block;
}
.vbox-close {
    position: absolute;
    top: 18px;
    right: 20px;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
    font-size: 1.1rem;
    line-height: 1;
    cursor: pointer;
}
.vbox-close:hover {
    background: rgba(255, 255, 255, 0.26);
}

/* Nothing should autoplay for a visitor who asked for stillness; the poster
   and the badge already say what it is. */
@media (prefers-reduced-motion: reduce) {
    .video-media video {
        display: none;
    }
    .video-media {
        aspect-ratio: 1200 / 722;
        background-image: url("assets/projects/debatebench-demo.jpg");
        background-size: cover;
        background-position: center;
    }
}

/* Pinned to the bottom of the tile so link rows line up side by side. */
.project-tile .project-links {
    margin: auto 0 0 0 !important;
    padding-top: 22px;
    font-size: 1rem;
}
.project-tile .project-links a {
    font-size: 1rem;
}

@media (max-width: 800px) {
    .tile-grid {
        grid-template-columns: minmax(0, 1fr);
    }
    .tile {
        padding: 32px 24px;
    }
}

/* ==========================================================================
   Sections
   ========================================================================== */
.section {
    margin: 0;
}

.eyebrow {
    display: block;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin-bottom: 10px;
}

/* Scroll reveal. Only ever hidden when scripting is available, so a failed
   or absent observer can never leave the page blank. */
html.js .reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.6s cubic-bezier(0.28, 0.11, 0.32, 1),
        transform 0.6s cubic-bezier(0.28, 0.11, 0.32, 1);
}
html.js .reveal.in {
    opacity: 1;
    transform: none;
}
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    html.js .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ==========================================================================
   Card primitive — borderless, rounded, contrast by ground
   ========================================================================== */
.entry,
.blog-card,
.paper,
.gh-panel,
.oss-list,
.gb-panel {
    background: var(--card);
    border-radius: var(--r-tile);
    box-shadow: var(--shadow);
    border: none;
}

/* Inside a tile the card primitive would stack a card on a card. Apple
   separates items within a tile by hairlines instead, so the tile stays the
   only rounded surface. */
.tile .blog-card,
.tile .paper {
    background: none;
    box-shadow: none;
    border-radius: 0;
    padding-left: 0;
    padding-right: 0;
    margin: 0;
    border-top: 1px solid var(--hairline);
}
/* The item directly after the tile's heading opens the list, so it carries
   no rule. Keyed off the heading rather than :first-of-type, which the
   heading's own <div> would otherwise claim. */
.tile-head + .blog-card,
.tile-head + .paper {
    border-top: none;
    padding-top: 0;
}

/* Panels sitting inside a centred stage carry left-aligned content. */
.stage .oss-list,
.stage .gh-panel,
.stage .gb-panel,
.stage .blog-card,
.stage .paper {
    text-align: left;
}

/* Experience. Dense bullet content, so it stays left-aligned inside its
   tile even though the surrounding stage centres. */
.entry {
    padding: 28px 34px 26px;
    margin-bottom: 10px;
    border-radius: var(--r-tile);
    text-align: left;
}
.entry:last-child {
    margin-bottom: 0;
}

@media (max-width: 700px) {
    .entry {
        padding: 26px 24px 28px;
    }
}

.entry-top {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.entry-logo {
    flex: 0 0 auto;
    width: 44px;
    height: 44px;
    object-fit: contain;
    border-radius: 11px;
    background: #fff;
    padding: 4px;
}

.entry-meta {
    flex: 1 1 auto;
    min-width: 0;
}

.entry-head-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 14px;
    flex-wrap: wrap;
}

.entry-head {
    font-weight: 600;
    font-size: 1.22rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.entry-head .meta {
    display: block;
    font-weight: 400;
    font-size: 0.76rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin-top: 6px;
}

.entry-links {
    font-size: 0.8rem;
    color: var(--text-faint);
    flex-shrink: 0;
}
.entry-links a {
    color: var(--link);
}

.entry-sub {
    color: var(--text-dim);
    font-size: 0.88rem;
    margin: 8px 0 0 0;
}

.entry ul {
    margin-top: 18px;
}

/* Collapsed detail. Native <details>, so it works without scripting and
   the content stays in the page for search and for Cmd-F. */
.entry-details {
    margin-top: 14px;
}

.entry-details > summary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    width: fit-content;
    cursor: pointer;
    list-style: none;
    color: var(--link);
    font-size: 0.95rem;
    letter-spacing: -0.01em;
}
/* Safari draws its own triangle unless this is cleared too. */
.entry-details > summary::-webkit-details-marker {
    display: none;
}
.entry-details > summary:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}

/* Chevron, rotating to point down when open. */
.entry-details > summary::after {
    content: "";
    width: 7px;
    height: 7px;
    border-right: 1.6px solid currentColor;
    border-bottom: 1.6px solid currentColor;
    transform: rotate(-45deg) translate(-1px, -1px);
    transition: transform 0.2s ease;
}
.entry-details[open] > summary::after {
    transform: rotate(45deg) translate(-1px, -1px);
}

.entry-details > summary:focus-visible {
    outline: 3px solid var(--link);
    outline-offset: 3px;
    border-radius: 6px;
}

.entry-details ul {
    margin-top: 14px;
}

/* ==========================================================================
   Projects — eyebrow, headline, copy, then the image, then CTAs
   ========================================================================== */
/* A project is now a stage, not a card: centred headline, one line of copy,
   chevron links, and the image carrying the lower half. */
.project-card {
    background: none;
    border-radius: 0;
    box-shadow: none;
    overflow: visible;
    margin: 0;
    text-align: center;
}

.project-body {
    padding: 0;
}

.project-title {
    margin: 0 0 14px 0;
    font-size: clamp(2.25rem, 4.6vw, 3.5rem);
    line-height: 1.06;
    letter-spacing: -0.03em;
    font-weight: 600;
}

.project-card p {
    margin: 0 auto 18px auto;
    color: var(--text-dim);
    font-size: clamp(1.05rem, 1.6vw, 1.3rem);
    line-height: 1.4;
    letter-spacing: -0.02em;
    max-width: 46ch;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 7px;
    margin: 0 0 4px 0 !important;
}

.project-tag {
    display: inline-flex;
    align-items: center;
    border-radius: 980px;
    padding: 4px 12px;
    font-size: 0.72rem;
    font-weight: 500;
    letter-spacing: 0;
    background: var(--chip-bg);
    color: var(--text-dim);
}

.project-media {
    display: block;
    position: relative;
    margin: 40px auto 0;
    background: var(--card-2);
    border-radius: var(--r-tile);
    overflow: hidden;
}
.project-media img,
.project-media video {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.7s cubic-bezier(0.28, 0.11, 0.32, 1);
}
.project-card:hover .project-media img {
    transform: scale(1.015);
}

/* Chevron links, matching the hero. */
.project-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px 28px;
    padding: 0;
    /* Overrides the 46ch measure .project-card sets on its paragraphs —
       without this the centred row is centred inside a narrow left-hung box. */
    max-width: none;
    margin: 20px auto 0 auto !important;
}
.project-links a {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 1.0625rem;
    letter-spacing: -0.01em;
    color: var(--link);
}
.project-links a::after {
    content: "\203A";
    font-size: 1.15em;
    line-height: 1;
    transform: translateY(-1px);
}
.project-links a:hover {
    text-decoration: underline;
    text-underline-offset: 3px;
}
.project-links svg {
    width: 14px;
    height: 14px;
}
.project-emoji {
    font-size: 0.95em;
    line-height: 1;
}

/* ==========================================================================
   Open source
   ========================================================================== */
.oss-toolbar {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin: 0 0 14px;
}

.oss-filters {
    display: inline-flex;
    gap: 4px;
    background: var(--card);
    border-radius: 980px;
    padding: 4px;
}

.oss-filter {
    font-family: inherit;
    font-size: 0.82rem;
    letter-spacing: -0.01em;
    background: none;
    color: var(--text-dim);
    border: none;
    border-radius: 980px;
    padding: 5px 16px;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}
.oss-filter:hover {
    color: var(--text);
}
.oss-filter.active {
    background: var(--cta);
    color: #fff;
}

.oss-count {
    font-size: 0.8em;
    opacity: 0.7;
    margin-left: 6px;
    font-variant-numeric: tabular-nums;
}

.oss-sort-wrap {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-left: auto;
}

.oss-sort-label {
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-faint);
}

.oss-sort {
    font-family: inherit;
    font-size: 0.82rem;
    color: var(--text);
    background: var(--card);
    border: none;
    border-radius: 980px;
    padding: 7px 14px;
    cursor: pointer;
}

.oss-list:empty {
    display: none;
}
.oss-list {
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.oss-row {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 15px 24px;
    border-bottom: 1px solid var(--hairline);
    color: var(--text);
    font-size: 0.94rem;
    transition: background 0.18s ease;
}
.oss-row:last-child {
    border-bottom: none;
}
.oss-row:hover {
    background: var(--card-2);
    text-decoration: none;
}

.oss-icon {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
}
.oss-icon.merged {
    color: var(--purple);
}
.oss-icon.open {
    color: var(--green);
}
.oss-icon.closed {
    color: var(--red);
}

.oss-title {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.oss-row:hover .oss-title {
    color: var(--link);
}

.oss-repo {
    font-family: var(--mono);
    font-size: 0.72rem;
    color: var(--text-faint);
    flex-shrink: 0;
}

.oss-date {
    font-size: 0.74rem;
    color: var(--text-faint);
    flex-shrink: 0;
    font-variant-numeric: tabular-nums;
}

.oss-diff {
    display: inline-flex;
    gap: 7px;
    font-family: var(--mono);
    font-size: 0.72rem;
    flex-shrink: 0;
    font-variant-numeric: tabular-nums;
}
.oss-add {
    color: var(--green);
}
.oss-del {
    color: var(--red);
}

.oss-more {
    font-family: inherit;
    font-size: 0.86rem;
    background: none;
    border: none;
    border-top: 1px solid var(--hairline);
    color: var(--link);
    cursor: pointer;
    padding: 15px 24px;
    text-align: left;
    transition: background 0.18s ease;
}
.oss-more:hover {
    background: var(--card-2);
}

.oss-fallback {
    padding: 15px 24px;
    color: var(--text-faint);
    font-size: 0.9rem;
}

/* Placeholder rows shown while the pull request feed is loading. */
.oss-row-skeleton {
    cursor: default;
}
.oss-row-skeleton:hover {
    background: none;
}
.oss-skel {
    height: 10px;
    border-radius: 4px;
    background: var(--card-2);
    animation: oss-skel-pulse 1.4s ease-in-out infinite;
}
.oss-skel-title {
    flex: 1;
    max-width: 340px;
}
.oss-skel-repo {
    width: 110px;
    margin-left: auto;
}
@keyframes oss-skel-pulse {
    0%,
    100% {
        opacity: 0.5;
    }
    50% {
        opacity: 1;
    }
}

.oss-orgs {
    margin-top: 24px;
}
.oss-orgs-group + .oss-orgs-group {
    margin-top: 20px;
}
.oss-orgs-label {
    display: block;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-faint);
    margin-bottom: 12px;
}
.oss-orgs-list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.oss-org-chip {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    background: var(--card);
    border-radius: 980px;
    padding: 6px 16px 6px 6px;
    font-size: 0.86rem;
    color: var(--text);
    transition: transform 0.2s ease;
}
.oss-org-chip:hover {
    transform: translateY(-1px);
    text-decoration: none;
}
.oss-org-chip img {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: block;
}
.oss-org-count {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 19px;
    height: 19px;
    padding: 0 6px;
    border-radius: 980px;
    background: var(--chip-bg);
    color: var(--text-dim);
    font-size: 0.68rem;
    font-weight: 600;
    line-height: 1;
    font-variant-numeric: tabular-nums;
}

@media (max-width: 620px) {
    .oss-repo,
    .oss-date,
    .oss-diff {
        display: none;
    }
}

/* ==========================================================================
   GitHub graph
   ========================================================================== */
.gh-panel {
    padding: 26px 30px 20px;
}

.gh-graph {
    width: 100%;
}
.gh-graph svg.gh-cal {
    display: block;
    width: 100%;
    height: auto;
}
.gh-month {
    font-family: var(--sans);
    font-size: 10px;
    fill: var(--text-faint);
}
.gh-legend {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 5px;
    margin-top: 10px;
    font-size: 11px;
    color: var(--text-faint);
}
.gh-graph .l0 {
    fill: var(--l0);
}
.gh-graph .l1 {
    fill: var(--l1);
}
.gh-graph .l2 {
    fill: var(--l2);
}
.gh-graph .l3 {
    fill: var(--l3);
}
.gh-graph .l4 {
    fill: var(--l4);
}
.gh-graph-caption {
    text-align: left;
    margin: 14px 0 0 0;
    color: var(--text-faint);
}

.gh-tooltip {
    position: absolute;
    opacity: 0;
    visibility: hidden;
    transform: translateY(4px);
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
    background: var(--tip-bg);
    color: var(--tip-fg);
    font-size: 12px;
    line-height: 1;
    padding: 7px 10px;
    border-radius: 8px;
    white-space: nowrap;
    pointer-events: none;
    z-index: 60;
}
.gh-tooltip.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ==========================================================================
   Writing
   ========================================================================== */
.blog-card {
    display: block;
    padding: 28px 30px;
    margin-bottom: 14px;
    color: var(--text);
    transition: transform 0.3s ease;
}
.blog-card:hover {
    transform: translateY(-2px);
    text-decoration: none;
}
.blog-card-title {
    display: block;
    font-weight: 600;
    font-size: 1.45rem;
    letter-spacing: -0.022em;
    margin-bottom: 10px;
}
.blog-card:hover .blog-card-title {
    color: var(--link);
}
.blog-card-desc {
    display: block;
    color: var(--text-dim);
    font-size: 0.98rem;
    max-width: 62ch;
    margin-bottom: 12px;
}
.blog-card .meta {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

/* ==========================================================================
   Research
   ========================================================================== */
.paper {
    padding: 24px 30px;
    margin: 0 0 14px 0;
}
.paper-title {
    display: block;
    font-weight: 600;
    font-size: 1.12rem;
    letter-spacing: -0.02em;
    line-height: 1.3;
    margin-bottom: 10px;
    color: var(--text);
}
.paper-authors {
    display: block;
    color: var(--text-dim);
    font-size: 0.92rem;
}
.paper-venue {
    display: block;
    color: var(--text-faint);
    font-size: 0.88rem;
    margin-top: 4px;
}
.paper-badge {
    display: inline-block;
    font-size: 0.62rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--link);
    background: color-mix(in srgb, var(--link) 16%, transparent);
    border-radius: 5px;
    padding: 2px 8px;
    margin-left: 9px;
    vertical-align: 2px;
}

/* ==========================================================================
   Guestbook / comments
   ========================================================================== */
.gb-panel {
    padding: 26px 30px;
}

.gb-btn {
    font-family: inherit;
    font-size: 0.86rem;
    letter-spacing: -0.01em;
    background: none;
    color: var(--link);
    border: 1px solid var(--link);
    border-radius: 980px;
    padding: 8px 18px;
    margin: 0 10px 10px 0;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 9px;
    vertical-align: middle;
    transition: background 0.2s ease;
}
.gb-btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}
.gb-btn:hover {
    background: color-mix(in srgb, var(--link) 12%, transparent);
}
#gb-form .gb-btn,
#cm-form .gb-btn {
    background: var(--cta);
    border-color: var(--cta);
    color: #fff;
}
#gb-form .gb-btn:hover,
#cm-form .gb-btn:hover {
    background: var(--cta-hover);
}

#gb-form,
#cm-form {
    margin: 16px 0;
}

#gb-message,
#cm-message {
    font-family: inherit;
    font-size: 0.95rem;
    width: 100%;
    box-sizing: border-box;
    border: 1px solid var(--hairline);
    border-radius: var(--r-sm);
    padding: 13px 15px;
    margin-bottom: 12px;
    background: var(--field-bg);
    color: var(--text);
    resize: vertical;
}
#gb-message::placeholder,
#cm-message::placeholder {
    color: var(--text-faint);
}
#gb-message:focus,
#cm-message:focus {
    outline: none;
    border-color: var(--link);
}

/* The rows sit inside the panel's padding, but their hover wash and
   hairlines run a little wider so they read as one list rather than a
   stack of boxes. The side padding here is what the rows bleed back into. */
#gb-entries,
#cm-entries {
    max-height: 480px;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0 14px;
    margin: 4px -14px 0;
    overscroll-behavior: contain;
    scrollbar-width: thin;
    scrollbar-color: var(--hairline) transparent;
}
#gb-entries::-webkit-scrollbar,
#cm-entries::-webkit-scrollbar {
    width: 6px;
}
#gb-entries::-webkit-scrollbar-thumb,
#cm-entries::-webkit-scrollbar-thumb {
    background: var(--hairline);
    border-radius: 980px;
}

.gb-entry {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 15px 14px;
    margin: 0 -14px;
    border-top: 1px solid var(--hairline);
    border-radius: var(--r-sm);
    transition: background 0.35s cubic-bezier(0.28, 0.11, 0.32, 1);
}
/* The list opens under the form, so the first row carries no rule. The
   hover wash would otherwise sit under a hairline it has swallowed. */
.gb-entry:first-child {
    border-top: none;
}
.gb-entry:hover,
.gb-entry:focus-within {
    background: var(--card-2);
}
.gb-entry:hover,
.gb-entry:hover + .gb-entry,
.gb-entry:focus-within,
.gb-entry:focus-within + .gb-entry {
    border-top-color: transparent;
}

.gb-avatar {
    flex: 0 0 auto;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    margin-top: 1px;
    object-fit: cover;
    background: var(--chip-bg);
    /* An inset ring instead of a border, so a light avatar still has an
       edge without the image being resized by it. */
    box-shadow: inset 0 0 0 1px var(--hairline);
}
.gb-avatar-mono {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-faint);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 0;
    line-height: 1;
    user-select: none;
}

.gb-body {
    flex: 1 1 auto;
    min-width: 0;
}
.gb-meta {
    display: flex;
    align-items: baseline;
    flex-wrap: wrap;
    row-gap: 2px;
}
.gb-name {
    font-weight: 600;
    font-size: 0.94rem;
    letter-spacing: -0.012em;
    overflow-wrap: anywhere;
}
.gb-date {
    color: var(--text-faint);
    font-size: 0.78rem;
    letter-spacing: -0.01em;
    white-space: nowrap;
    margin-left: 10px;
}
.gb-text {
    margin: 4px 0 0 0;
    color: var(--text-dim);
    font-size: 0.95rem;
    line-height: 1.47059;
    white-space: pre-wrap;
    overflow-wrap: break-word;
}

/* Empty and error states. Centred and airy rather than a stray line of
   small print at the top of the list. */
.gb-empty {
    margin: 0;
    padding: 30px 0 26px;
    text-align: center;
    font-size: 0.92rem;
}

.gb-delete {
    flex: 0 0 auto;
    align-self: flex-start;
    margin: -2px -4px 0 8px;
    width: 26px;
    height: 26px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: none;
    color: var(--text-faint);
    font-size: 1.05rem;
    line-height: 1;
    cursor: pointer;
    border-radius: 50%;
    opacity: 0;
    transition: opacity 0.25s ease, background 0.2s ease, color 0.2s ease;
}
.gb-entry:hover .gb-delete,
.gb-entry:focus-within .gb-delete {
    opacity: 1;
}
.gb-delete:hover {
    color: var(--red);
    background: color-mix(in srgb, var(--red) 14%, transparent);
}
.gb-delete:focus-visible {
    opacity: 1;
    outline: 2px solid var(--link);
    outline-offset: 2px;
}
/* Touch has no hover, so the control has to stay put. */
@media (hover: none) {
    .gb-delete {
        opacity: 1;
        color: var(--red);
    }
}

@media (max-width: 700px) {
    .gb-entry {
        gap: 12px;
        padding: 14px 12px;
        margin: 0 -12px;
    }
    #gb-entries,
    #cm-entries {
        padding: 0 12px;
        margin: 4px -12px 0;
    }
    .gb-avatar {
        width: 34px;
        height: 34px;
    }
}

/* ==========================================================================
   Email copy widget
   ========================================================================== */
.email-copy {
    position: relative;
    cursor: pointer;
    color: inherit;
    border-bottom: 1px dashed currentColor;
}
.email-copy-tip {
    position: absolute;
    left: 50%;
    bottom: 100%;
    transform: translateX(-50%) translateY(-4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s;
    background: var(--tip-bg);
    color: var(--tip-fg);
    font-size: 12px;
    line-height: 1;
    padding: 6px 10px;
    border-radius: 6px;
    white-space: nowrap;
    pointer-events: none;
}
.email-copy-tip.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-7px);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    padding-bottom: 72px;
}

.cool-guys-label {
    color: var(--text-faint);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 14px;
}

.cool-guys {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin: 0 0 8px 0;
}
/* Greyscale until pointed at, so the row reads as one quiet block and each
   face only resolves on approach. */
.cool-guys a img {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    display: block;
    filter: grayscale(1);
    transition: transform 0.25s ease, filter 0.25s ease;
}
/* focus-visible as well as hover — a keyboard user never hovers. */
.cool-guys a:hover img,
.cool-guys a:focus-visible img {
    transform: translateY(-2px);
    filter: grayscale(0);
}

.webring {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin: 28px 0;
}
.webring img {
    image-rendering: pixelated;
    display: block;
}
.webring-nav {
    display: inline-flex;
    gap: 14px;
    font-size: 0.85rem;
}

.other-stuff {
    margin-top: 44px;
    text-align: center;
}
.other-stuff a {
    color: var(--text-faint);
}
.other-stuff a:hover {
    color: var(--text);
}

/* ==========================================================================
   Notes grid (other.html)
   ========================================================================== */
.note-filters {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin: 0 0 20px 0;
}
.note-subfilters {
    margin-top: -10px;
}
.note-filter {
    font-family: inherit;
    font-size: 0.82rem;
    letter-spacing: -0.01em;
    background: var(--card);
    color: var(--text-dim);
    border: none;
    border-radius: 980px;
    padding: 7px 16px;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}
.note-filter:hover {
    color: var(--text);
}
.note-filter.active {
    background: var(--cta);
    color: #fff;
}

.note-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: 28px 18px;
    /* Cards read as a left-aligned list even though the stage centres. */
    text-align: left;
    margin-top: 34px;
}
.note-card[hidden] {
    display: none;
}
.note-thumb {
    display: block;
    border-radius: var(--r-sm);
    background: var(--card);
    overflow: hidden;
    transition: transform 0.3s ease;
}
.note-thumb:hover {
    transform: translateY(-3px);
}
.note-thumb img {
    display: block;
    width: 100%;
    aspect-ratio: 3 / 4;
    object-fit: cover;
    object-position: top;
}
.note-card-title {
    font-weight: 600;
    font-size: 0.92rem;
    letter-spacing: -0.015em;
    margin-top: 12px;
}
.note-card-title a {
    color: var(--text);
}
.note-card-title a:hover {
    color: var(--link);
}
.note-tag {
    font-size: 0.76rem;
    color: var(--text-faint);
    margin-top: 3px;
}
.note-card-links {
    font-size: 0.78rem;
    margin-top: 5px;
}

/* ==========================================================================
   Blog article prose
   ========================================================================== */
.topnav + main.wrap {
    padding-top: clamp(44px, 6vw, 72px);
}

article {
    font-size: 1.0625rem;
    line-height: 1.6;
    max-width: 700px;
    margin: 0 auto;
}
article > h1 {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    margin-bottom: 24px;
}
article > p,
article > ul,
article > ol {
    color: var(--text-dim);
}
article h2 {
    margin: 44px 0 16px;
}
article h3 {
    font-size: 1.2rem;
    margin: 32px 0 10px;
}
article ul,
article ol {
    margin: 16px 0;
}

.post-meta {
    color: var(--text-faint);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 28px;
}

.tldr {
    background: var(--card);
    border-radius: var(--r);
    padding: 24px 28px;
    margin: 24px 0 34px 0;
    font-size: 0.98rem;
}
.tldr p {
    margin: 0 0 12px 0;
    color: var(--text-dim);
}
.tldr p:last-child {
    margin-bottom: 0;
}
.tldr strong {
    color: var(--text);
}
.tldr .tldr-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}
.tldr .tldr-links a {
    border: 1px solid var(--link);
    border-radius: 980px;
    padding: 6px 16px;
    font-size: 0.85rem;
    color: var(--link);
}
.tldr .tldr-links a:hover {
    background: color-mix(in srgb, var(--link) 12%, transparent);
    text-decoration: none;
}

article blockquote {
    margin: 22px 0;
    padding: 4px 0 4px 20px;
    border-left: 3px solid var(--hairline);
    color: var(--text-dim);
}
article blockquote p:last-child {
    margin-bottom: 0;
}

article code {
    font-family: var(--mono);
    font-size: 0.85em;
    letter-spacing: 0;
    background: var(--card);
    padding: 2px 6px;
    border-radius: 5px;
    color: var(--text);
}

article pre {
    background: var(--card);
    border-radius: var(--r-sm);
    padding: 20px 22px;
    overflow-x: auto;
    margin: 24px 0;
}
article pre code {
    background: none;
    padding: 0;
    font-size: 0.82rem;
    line-height: 1.6;
}

article table {
    border-collapse: collapse;
    width: 100%;
    margin: 24px 0;
    font-size: 0.9rem;
    background: var(--card);
    border-radius: var(--r-sm);
    overflow: hidden;
}
article th,
article td {
    border-bottom: 1px solid var(--hairline);
    padding: 11px 16px;
    text-align: left;
    color: var(--text-dim);
    vertical-align: top;
}
article th {
    color: var(--text);
    font-weight: 600;
    font-size: 0.82rem;
}
article tr:last-child td {
    border-bottom: none;
}

article figure {
    margin: 32px 0;
}
article figure img {
    max-width: 100%;
    display: block;
    margin: 0 auto;
    border-radius: var(--r-sm);
}
article figcaption {
    color: var(--text-faint);
    font-size: 0.84rem;
    text-align: center;
    margin-top: 12px;
}

/* Blog page furniture sits at article width too. */
#comments-thread,
#blog-views,
h2#stats,
.topnav + main.wrap > p {
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ==========================================================================
   Syntax highlighting (highlight.js token classes)
   ========================================================================== */
.hljs-comment,
.hljs-quote {
    color: var(--syn-comment);
    font-style: italic;
}
.hljs-keyword,
.hljs-selector-tag,
.hljs-operator {
    color: var(--syn-keyword);
}
.hljs-string,
.hljs-doctag {
    color: var(--syn-string);
}
.hljs-number,
.hljs-symbol {
    color: var(--syn-number);
}
.hljs-title,
.hljs-title.function_,
.hljs-built_in {
    color: var(--syn-title);
}
.hljs-literal,
.hljs-meta {
    color: var(--syn-literal);
}
.hljs-params,
.hljs-variable,
.hljs-attr {
    color: inherit;
}

/* ==========================================================================
   Search — nav trigger and the ⌘K palette
   ========================================================================== */
.nav-search {
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-family: inherit;
    font-size: 0.75rem;
    letter-spacing: -0.01em;
    color: var(--text-dim);
    background: none;
    border: 1px solid var(--hairline);
    border-radius: var(--pill);
    padding: 3px 10px 3px 9px;
    cursor: pointer;
    transition: color 0.2s ease, border-color 0.2s ease;
}
.nav-search:hover {
    color: var(--text);
    border-color: var(--text-faint);
}
.nav-search svg {
    width: 12px;
    height: 12px;
    flex-shrink: 0;
}
.nav-search kbd {
    font-family: inherit;
    font-size: 0.95em;
    color: var(--text-faint);
    letter-spacing: 0;
}

.search-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    background: rgba(0, 0, 0, 0.32);
    -webkit-backdrop-filter: saturate(120%) blur(4px);
    backdrop-filter: saturate(120%) blur(4px);
    display: flex;
    justify-content: center;
    /* Sits high rather than centred, so the list grows downward into empty
       space instead of shifting the field as results change. */
    align-items: flex-start;
    padding: clamp(56px, 12vh, 140px) var(--gutter) var(--gutter);
}

/* The scroll lock keeps the page still behind the palette. */
html.search-open,
html.search-open body {
    overflow: hidden;
}

.search-panel {
    width: 100%;
    max-width: 600px;
    background: var(--card);
    border-radius: var(--r);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.22);
    overflow: hidden;
}

.search-field {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--hairline);
}
.search-icon {
    width: 17px;
    height: 17px;
    flex-shrink: 0;
    color: var(--text-faint);
}
#search-input {
    flex: 1 1 auto;
    min-width: 0;
    font-family: inherit;
    font-size: 1.0625rem;
    letter-spacing: -0.022em;
    color: var(--text);
    background: none;
    border: none;
    outline: none;
    padding: 2px 0;
}
#search-input::placeholder {
    color: var(--text-faint);
}
.search-esc {
    flex-shrink: 0;
    font-family: inherit;
    font-size: 0.72rem;
    color: var(--text-faint);
    background: var(--chip-bg);
    border: none;
    border-radius: 6px;
    padding: 3px 7px;
    cursor: pointer;
}
.search-esc:hover {
    color: var(--text);
}

.search-results {
    list-style: none;
    margin: 0;
    padding: 6px;
    max-height: min(52vh, 420px);
    overflow-y: auto;
}
.sr {
    display: block;
    padding: 10px 12px;
    border-radius: 10px;
    cursor: pointer;
    margin: 0;
    color: var(--text);
    font-size: 0.94rem;
}
.sr.on {
    background: var(--card-2);
}
.sr-t {
    display: block;
    font-weight: 600;
    letter-spacing: -0.015em;
    line-height: 1.3;
}
.sr-m {
    display: block;
    margin-top: 2px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    color: var(--text-faint);
}
.sr-s {
    display: block;
    margin-top: 4px;
    font-size: 0.86rem;
    line-height: 1.4;
    color: var(--text-dim);
    /* Snippets are one line so the list stays scannable. */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.search-results mark {
    background: rgba(0, 113, 227, 0.16);
    color: inherit;
    border-radius: 3px;
    padding: 0 1px;
}

.search-empty,
.search-hint {
    margin: 0;
    padding: 14px 18px;
    font-size: 0.82rem;
    color: var(--text-faint);
}
.search-hint {
    border-top: 1px solid var(--hairline);
}

/* Briefly marks whatever the search jumped to on the current page. */
.search-hit {
    animation: search-flash 1.6s ease;
}
@keyframes search-flash {
    0%,
    60% {
        box-shadow: 0 0 0 3px rgba(0, 113, 227, 0.55);
    }
    100% {
        box-shadow: 0 0 0 3px rgba(0, 113, 227, 0);
    }
}

@media (prefers-reduced-motion: reduce) {
    .search-hit {
        animation: none;
    }
    .oss-skel {
        animation: none;
    }
}

@media (max-width: 620px) {
    .nav-search kbd {
        display: none;
    }
    /* The nav scrolls horizontally on small screens, which would carry the
       trigger off the end — and there is no ⌘K on a phone. Pin it so it is
       always reachable, with the links scrolling underneath. */
    .nav-search {
        position: sticky;
        right: 0;
        background: var(--bg);
        box-shadow: -10px 0 10px -5px var(--bg);
    }
    .search-overlay {
        padding-top: 40px;
    }
}

/* ==========================================================================
   Short viewports

   The hero is type only now, so it no longer has to hold a tall image band
   and both it and the intro copy fit a laptop screen with room to spare.
   These rules only trim the padding a little on short viewports; the type
   keeps its full size, which is what made the earlier version feel cramped.
   ========================================================================== */
@media (min-width: 700px) and (max-height: 1000px) {
    .hero {
        padding: clamp(44px, 7.4vh, 150px) 0 clamp(30px, 4.8vh, 112px);
    }
    .intro {
        padding: clamp(30px, 4.8vh, 104px) 0;
    }
    .intro .stage-lead {
        margin-bottom: 16px;
    }
    .intro .hero-contact {
        margin-top: 18px !important;
    }
}

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 700px) {
    .entry,
    .blog-card,
    .paper,
    .gh-panel,
    .gb-panel {
        padding-left: 22px;
        padding-right: 22px;
    }
    /* These two sit directly on the stage, which already supplies the
       gutter, so re-padding them would double it. */
    .project-body,
    .project-links {
        padding-left: 0;
        padding-right: 0;
    }
    .tile .blog-card,
    .tile .paper {
        padding-left: 0;
        padding-right: 0;
    }
    .oss-row,
    .oss-more {
        padding-left: 18px;
        padding-right: 18px;
    }
    .links {
        gap: 10px 20px;
    }
    .links a.primary {
        padding: 9px 18px;
    }
    .oss-sort-wrap {
        margin-left: 0;
    }
    .section-head {
        max-width: none;
    }
    /* Stages tighten up rather than keeping desktop's generous air. */
    .stage {
        padding: clamp(44px, 9vw, 64px) 0;
    }
    .hero {
        padding: 64px 0 52px;
    }
}

/* ==========================================================================
   Notes: showing only the newest few (other.html)
   ========================================================================== */
/* Only while the height is being animated, so a card's hover lift is never
   clipped at rest. */
.note-grid.is-animating {
    overflow: hidden;
}
.note-card.is-revealing {
    animation: note-reveal 0.42s cubic-bezier(0.28, 0.11, 0.32, 1) both;
}
@keyframes note-reveal {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.note-more {
    display: flex;
    justify-content: center;
    margin-top: 30px;
}
.note-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-family: inherit;
    font-size: 0.88rem;
    letter-spacing: -0.015em;
    color: var(--link);
    background: none;
    border: none;
    border-radius: var(--pill);
    padding: 8px 14px;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
}
.note-more-btn:hover {
    background: var(--btn-hover);
    color: var(--cta-hover);
}
.note-more-btn svg {
    width: 11px;
    height: 11px;
    transition: transform 0.3s ease;
}
.note-more-btn[aria-expanded="true"] svg {
    transform: rotate(180deg);
}

.note-empty {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-faint);
    margin: 34px 0 0;
}

@media (prefers-reduced-motion: reduce) {
    .note-card.is-revealing {
        animation: none;
    }
    .note-more-btn svg {
        transition: none;
    }
}