@font-face {
    font-family: "Geist";
    src: url("/fonts/Geist-VariableFont_wght.ttf") format("truetype-variations");
    font-weight: 100 900;
    font-display: swap;
}

@font-face {
    font-family: "Geist Mono";
    src: url("/fonts/GeistMono-VariableFont_wght.ttf") format("truetype-variations");
    font-weight: 100 900;
    font-display: swap;
}

:root {
    --bg: #ececec;
    --ink: #0a0a0a;
    --ink-soft: #4a4a4a;
    --ink-mute: #888888;
    --hairline: #cfcfcf;
    --hairline-soft: #dedede;
    --accent: #a855f7;
    --accent-deep: #7c3aed;
    --on-accent: #ffffff;
    --panel: #ffffff;

    --font-display: "Geist", system-ui, sans-serif;
    --font-mono: "Geist Mono", ui-monospace, monospace;

    --gap: clamp(20px, 2.5vw, 40px);
    --pad-edge: clamp(20px, 3vw, 56px);

    /* compat aliases for secondary pages still using older token names */
    --text: var(--ink);
    --text-secondary: var(--ink-soft);
    --text-tertiary: var(--ink-mute);
    --border: var(--hairline);
    --border-subtle: var(--hairline-soft);
    --screenshot-border: var(--hairline);
}

/* Per-product accent overrides. Pages wrap their .shell in
   <div data-product="player|convert|drift|signal"> to pick a local accent. */
[data-product="convert"] {
    --accent: #06b6d4;
    --accent-deep: #0891b2;
}

[data-product="drift"] {
    --accent: #ec4899;
    --accent-deep: #db2777;
}

[data-product="signal"] {
    --accent: #10b981;
    --accent-deep: #059669;
}

[data-theme="dark"] {
    --bg: #0d0d0d;
    --ink: #f2f2f2;
    --ink-soft: #b8b8b8;
    --ink-mute: #6a6a6a;
    --hairline: #262626;
    --hairline-soft: #1c1c1c;
    --panel: #181818;
    --accent: #a855f7;
    --on-accent: #ffffff;

    --text: var(--ink);
    --text-secondary: var(--ink-soft);
    --text-tertiary: var(--ink-mute);
    --border: var(--hairline);
    --border-subtle: var(--hairline-soft);
    --screenshot-border: var(--hairline);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    background: var(--bg);
    color: var(--ink);
}

body {
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

::selection {
    background: var(--accent);
    color: var(--on-accent);
}

/* ─── chrome (header / side rails / footer) ─────────────── */

.shell {
    position: relative;
    min-height: 100vh;
}

.rail {
    position: fixed;
    top: 0;
    bottom: 0;
    width: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    z-index: 5;
}

.rail-left {
    left: 0;
    border-right: 1px solid var(--hairline-soft);
}

.rail-right {
    right: 0;
    border-left: 1px solid var(--hairline-soft);
}

.rail span {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--ink-mute);
    writing-mode: vertical-rl;
    transform: rotate(180deg);
    white-space: nowrap;
}

.rail-right span {
    transform: rotate(0deg);
}

.topbar {
    position: sticky;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px var(--pad-edge);
    background: transparent;
    margin-left: 28px;
    margin-right: 28px;
    z-index: 20;
    transition: background-color 0.25s ease, backdrop-filter 0.25s ease;
}

.topbar.is-scrolled {
    background-color: color-mix(in srgb, var(--bg) 50%, transparent);
    backdrop-filter: blur(18px) saturate(140%);
    -webkit-backdrop-filter: blur(18px) saturate(140%);
}

[data-product="home"] .topbar .brand {
    visibility: hidden;
}

.hero-brand {
    display: block;
    width: clamp(120px, 14vw, 200px);
    height: auto;
    margin-bottom: clamp(18px, 2.4vw, 36px);
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--ink);
}

.brand-mark {
    width: 28px;
    height: 28px;
    display: block;
}

.brand-mark-light,
.foot-mark-light,
.hero-brand-light { display: none; }

[data-theme="light"] .brand-mark-dark,
[data-theme="light"] .foot-mark-dark,
[data-theme="light"] .hero-brand-dark { display: none; }

[data-theme="light"] .brand-mark-light,
[data-theme="light"] .foot-mark-light,
[data-theme="light"] .hero-brand-light { display: block; }

.foot-brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.foot-mark {
    width: 22px;
    height: 22px;
    display: block;
}

.topnav {
    display: flex;
    gap: 28px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--ink-soft);
}

.topnav a {
    position: relative;
    padding-bottom: 2px;
    transition: color 0.15s;
}

.topnav a:hover {
    color: var(--ink);
}

.topnav a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -3px;
    height: 1px;
    background: var(--ink);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.2s ease;
}

.topnav a:hover::after,
.topnav a.is-active::after {
    transform: scaleX(1);
}

.topnav a.is-active {
    color: var(--ink);
}

/* ─── shared product-card pattern (used on / and /player TUI section) ─── */

.product-card {
    display: flex;
    flex-direction: column;
    gap: 18px;
    padding: 28px;
    border: 1px solid var(--hairline);
    background: var(--panel);
    text-decoration: none;
    color: inherit;
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.product-card:hover {
    border-color: var(--ink);
}

.product-card .pc-label {
    font: 500 10px/1 var(--font-mono);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--ink-mute);
}

.product-card .pc-title {
    font: 700 22px/1.1 var(--font-display);
    letter-spacing: -0.01em;
    color: var(--ink);
    margin: 0;
}

.product-card .pc-body {
    font: 400 13px/1.6 var(--font-mono);
    color: var(--ink-soft);
    margin: 0;
}

.product-card .pc-highlights {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.product-card .pc-highlights li {
    font: 400 12px/1.55 var(--font-mono);
    color: var(--ink-soft);
    padding-left: 16px;
    position: relative;
}

.product-card .pc-highlights li::before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--accent);
}

.product-card .pc-cta {
    display: inline-flex;
    align-items: baseline;
    gap: 8px;
    font: 500 12px/1 var(--font-mono);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--accent);
    margin-top: auto;
    align-self: flex-start;
}

.product-card .pc-cta::after {
    content: "↗";
    color: var(--accent);
}

/* ─── info layout used by /drift and /signal ──────────────── */

.info-section {
    margin: 0 28px;
    padding: 64px var(--pad-edge);
    border-top: 1px solid var(--hairline);
}

.info-section h2 {
    font: 700 28px/1.15 var(--font-display);
    letter-spacing: -0.015em;
    margin: 0 0 8px;
    color: var(--ink);
}

.info-section .section-lede {
    font: 400 14px/1.6 var(--font-mono);
    color: var(--ink-soft);
    max-width: 680px;
    margin: 0 0 32px;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 0;
    border-top: 1px solid var(--hairline);
    border-left: 1px solid var(--hairline);
}

.info-grid > .info-cell {
    padding: 24px;
    border-right: 1px solid var(--hairline);
    border-bottom: 1px solid var(--hairline);
}

.info-cell .ic-num {
    font: 400 11px/1 var(--font-mono);
    color: var(--ink-mute);
    margin-bottom: 10px;
}

.info-cell h3 {
    font: 600 15px/1.2 var(--font-display);
    margin: 0 0 8px;
    color: var(--ink);
}

.info-cell p {
    font: 400 12.5px/1.6 var(--font-mono);
    color: var(--ink-soft);
    margin: 0;
}

.info-cell .ic-algo {
    font: 400 11px/1.5 var(--font-mono);
    color: var(--ink-mute);
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px dashed var(--hairline);
}

/* ─── pill row used on meta-strip alternatives ─────────────── */

.info-hero {
    margin: 0 28px;
    display: grid;
    grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
    gap: 48px;
    padding: clamp(32px, 5vw, 72px) var(--pad-edge) 56px;
    align-items: center;
}

.info-hero h1 {
    font: 700 clamp(36px, 5vw, 56px) / 1 var(--font-display);
    letter-spacing: -0.02em;
    margin: 0 0 20px;
    color: var(--ink);
}

.info-hero .info-lede {
    font: 400 15px/1.6 var(--font-mono);
    color: var(--ink-soft);
    margin: 0;
    max-width: 560px;
}

.info-hero .info-accent {
    color: var(--accent);
}

@media (max-width: 760px) {
    .info-hero {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

/* ─── hero ─────────────────────────────────────────────── */

.hero {
    position: relative;
    margin: 0 28px;
    border-bottom: 1px solid var(--hairline-soft);
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    min-height: calc(100vh - 60px);
    isolation: isolate;
    overflow: hidden;
}

.hero-left {
    position: relative;
    z-index: 2;
    padding: clamp(32px, 5vw, 72px) var(--pad-edge);
    display: flex;
    flex-direction: column;
}

.hero-right {
    position: relative;
    z-index: 2;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    display: block;
    touch-action: none;
    user-select: none;
}

.hero-headline {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(56px, 9.4vw, 168px);
    line-height: 0.94;
    letter-spacing: -0.045em;
    color: var(--ink);
    position: relative;
    z-index: 2;
}

.hero-headline .pill {
    display: inline;
}

.hero-headline.hero-headline-lede {
    font-size: clamp(34px, 4.2vw, 68px);
    line-height: 1.5;
    letter-spacing: -0.03em;
    max-width: 24ch;
}

.hero-headline-lede .lede-highlight {
    background-color: rgba(0, 0, 0, 0.50);
    color: #ffffff;
    padding: 0 0.28em;
    -webkit-box-decoration-break: clone;
    box-decoration-break: clone;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    border-radius: 2px;
}

[data-theme="light"] .hero-headline-lede .lede-highlight {
    background-color: rgba(255, 255, 255, 0.50);
    color: #000000;
}

.badge {
    position: absolute;
    width: 138px;
    height: 138px;
    top: 38%;
    left: 36%;
    z-index: 1;
    pointer-events: none;
}

.badge-disc {
    position: absolute;
    inset: 18px;
    border-radius: 50%;
    background: var(--accent);
    z-index: 0;
}

.badge svg {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    animation: spin 28s linear infinite;
}

.badge text {
    font-family: var(--font-mono);
    font-size: 9.6px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    fill: var(--ink);
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.guide {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

.guide path {
    fill: none;
    stroke: var(--ink-mute);
    stroke-width: 1;
    stroke-dasharray: 2 5;
    opacity: 0.55;
}

.hero-meta {
    margin-top: auto;
    padding-top: clamp(40px, 6vw, 80px);
    position: relative;
    z-index: 2;
}

.byline {
    display: flex;
    align-items: center;
    gap: 14px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.04em;
    color: var(--ink);
}

.byline .avatar {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: linear-gradient(135deg, #2a2a2a 0%, #555 50%, #2a2a2a 100%);
    flex-shrink: 0;
    border: 1px solid var(--ink);
}

.byline .progress {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--ink-mute);
    margin-left: 10px;
}

.byline .progress-bar {
    width: 92px;
    height: 1px;
    background: var(--hairline);
    position: relative;
}

.byline .progress-bar::after {
    content: "";
    position: absolute;
    left: 0;
    top: -1px;
    width: 22%;
    height: 3px;
    background: var(--ink);
}

.copy {
    max-width: 360px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.65;
    color: var(--ink);
}

.copy strong {
    font-weight: 600;
}

/* ─── hero right (green panel) ─────────────────────────── */

.blobs {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    display: block;
    touch-action: none;
    user-select: none;
}

.right-vlabel {
    position: absolute;
    right: clamp(20px, 3vw, 48px);
    bottom: clamp(28px, 5vw, 80px);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(32px, 4.8vw, 72px);
    line-height: 0.92;
    letter-spacing: -0.03em;
    color: var(--on-accent);
    writing-mode: vertical-rl;
    text-orientation: mixed;
    z-index: 2;
    mix-blend-mode: normal;
}

.right-tag {
    position: absolute;
    top: clamp(20px, 3vw, 36px);
    right: clamp(20px, 3vw, 36px);
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.32em;
    text-transform: uppercase;
    color: var(--on-accent);
    z-index: 3;
}

.right-tag .dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--on-accent);
    animation: pulse 2.4s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.35; }
    50%      { opacity: 1; }
}

/* ─── meta strip + download ────────────────────────────── */

.meta-strip {
    margin: 0 28px;
    border-top: 1px solid var(--hairline-soft);
    border-bottom: 1px solid var(--hairline-soft);
    display: grid;
    grid-template-columns: repeat(5, 1fr);
}

.meta-cell {
    padding: 28px var(--pad-edge);
    border-right: 1px solid var(--hairline-soft);
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}

.meta-cell:last-child {
    border-right: none;
}

.meta-cell .k {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink-mute);
}

.meta-cell .v-link {
    color: inherit;
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.18s, color 0.18s;
}

.meta-cell .v-link:hover {
    border-bottom-color: currentColor;
    color: var(--accent);
}

.meta-cell .v {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 22px;
    letter-spacing: -0.015em;
    color: var(--ink);
}

.meta-cell.download {
    background: var(--ink);
    color: var(--bg);
    transition: background 0.18s, color 0.18s;
    cursor: pointer;
    text-decoration: none;
}

.meta-cell.download .k {
    color: currentColor;
    opacity: 0.6;
}

.meta-cell.download .v {
    color: inherit;
    display: flex;
    align-items: center;
    gap: 10px;
}

.meta-cell.download:hover {
    background: var(--accent);
    color: var(--on-accent);
}

.meta-cell.download:hover .k {
    color: currentColor;
    opacity: 0.75;
}

.meta-cell.download .arrow {
    display: inline-block;
    transition: transform 0.18s;
}

.meta-cell.download:hover .arrow {
    transform: translate(3px, -3px);
}

.download-mark {
    width: 28px;
    height: 28px;
    display: block;
    flex-shrink: 0;
}

.download-mark-dark { display: none; }

[data-theme="light"] .download-mark-dark { display: block; }
[data-theme="light"] .download-mark-light { display: none; }

/* ─── feature grid ─────────────────────────────────────── */

.section {
    margin: 0 28px;
    padding: clamp(64px, 10vw, 140px) var(--pad-edge);
    border-bottom: 1px solid var(--hairline-soft);
    position: relative;
}

.section-head {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 32px;
    align-items: baseline;
    margin-bottom: clamp(40px, 6vw, 96px);
}

.section-head .num {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    color: var(--ink-mute);
}

.section-head h2 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(32px, 5vw, 80px);
    line-height: 1;
    letter-spacing: -0.03em;
    color: var(--ink);
}

.section-head .tag {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.28em;
    text-transform: uppercase;
    color: var(--ink-mute);
    text-align: right;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0;
    border-top: 1px solid var(--hairline-soft);
}

.feature-cell {
    padding: 36px 0;
    border-bottom: 1px solid var(--hairline-soft);
    display: grid;
    grid-template-columns: 56px 1fr;
    gap: 24px;
    position: relative;
}

.feature-cell:nth-child(odd) {
    padding-right: 36px;
    border-right: 1px solid var(--hairline-soft);
}

.feature-cell:nth-child(even) {
    padding-left: 36px;
}

.feature-cell .num {
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.18em;
    color: var(--ink-mute);
    padding-top: 4px;
}

.feature-cell h3 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 26px;
    letter-spacing: -0.02em;
    line-height: 1.05;
    color: var(--ink);
    margin-bottom: 14px;
}

.feature-cell p {
    font-family: var(--font-mono);
    font-size: 12.5px;
    line-height: 1.7;
    color: var(--ink-soft);
    max-width: 460px;
}

/* ─── screenshots ──────────────────────────────────────── */

.shots {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background: var(--hairline-soft);
    border: 1px solid var(--hairline-soft);
}

.shot {
    background: var(--panel);
    aspect-ratio: 16 / 10;
    overflow: hidden;
    cursor: zoom-in;
    position: relative;
}

.shot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
    display: block;
    transition: transform 0.4s ease, opacity 0.2s;
}

.shot:hover img {
    transform: scale(1.02);
    opacity: 0.92;
}

/* ─── footer ───────────────────────────────────────────── */

.foot {
    margin: 0 28px;
    padding: 32px var(--pad-edge);
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--ink-mute);
    letter-spacing: 0.04em;
    gap: 20px;
}

.foot > :last-child {
    justify-self: end;
}

.foot a:hover {
    color: var(--ink);
}

.foot-nav {
    display: flex;
    gap: 22px;
}

.theme-toggle {
    border: none;
    background: transparent;
    color: var(--ink-mute);
    cursor: pointer;
    padding: 8px;
    width: 32px;
    height: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: color 0.15s;
}

.theme-toggle:hover {
    color: var(--ink);
}

.theme-toggle svg {
    width: 14px;
    height: 14px;
}

.icon-sun,
.icon-moon { display: none; }
[data-theme="dark"] .icon-sun { display: block; }
[data-theme="light"] .icon-moon { display: block; }

/* ─── lightbox (preserved from previous design) ────────── */

.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

.lightbox.active {
    opacity: 1;
    pointer-events: auto;
}

.lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.92);
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 88vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.lightbox-content img {
    max-width: 90vw;
    max-height: 82vh;
    object-fit: contain;
    border: 1px solid #2a2a2a;
    display: block;
}

.lightbox-counter {
    font-family: var(--font-mono);
    font-size: 11px;
    color: #888;
    letter-spacing: 0.18em;
}

.lightbox-close,
.lightbox-prev,
.lightbox-next {
    position: relative;
    z-index: 1001;
    background: none;
    border: none;
    color: #888;
    font-size: 22px;
    cursor: pointer;
    padding: 16px;
    transition: color 0.15s;
}

.lightbox-close {
    position: absolute;
    top: 16px;
    right: 20px;
    padding: 8px;
}

.lightbox-close:hover,
.lightbox-prev:hover,
.lightbox-next:hover {
    color: var(--accent);
}

/* ─── secondary pages (changelog / privacy / etc.) ──── */

.doc {
    max-width: 760px;
    margin: 0 auto;
    padding: clamp(40px, 6vw, 96px) var(--pad-edge);
}

.doc .back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin-bottom: 48px;
    transition: color 0.15s;
}

.doc .back-link:hover {
    color: var(--ink);
}

.doc h1 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(48px, 7vw, 96px);
    line-height: 0.95;
    letter-spacing: -0.035em;
    color: var(--ink);
    margin-bottom: 56px;
}

.doc h2 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 28px;
    letter-spacing: -0.015em;
    color: var(--ink);
}

.doc h3 {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.22em;
    text-transform: uppercase;
    color: var(--ink-mute);
    margin: 24px 0 10px;
}

.doc p,
.doc li {
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.75;
    color: var(--ink-soft);
}

.doc strong {
    color: var(--ink);
}

.doc a {
    color: var(--ink);
    border-bottom: 1px solid var(--hairline);
    transition: border-color 0.15s;
}

.doc a:hover {
    border-color: var(--accent);
}

/* ─── responsive ───────────────────────────────────────── */

@media (max-width: 960px) {
    .hero {
        grid-template-columns: 1fr;
    }

    .hero-right {
        display: none;
    }

    .meta-strip {
        grid-template-columns: repeat(2, 1fr);
    }

    .meta-cell {
        border-right: 1px solid var(--hairline-soft);
        border-bottom: 1px solid var(--hairline-soft);
    }

    .meta-cell:nth-child(2n) {
        border-right: none;
    }

    .meta-cell.download {
        grid-column: span 2;
    }

    .feature-grid {
        grid-template-columns: 1fr;
    }

    .feature-cell:nth-child(odd) {
        border-right: none;
        padding-right: 0;
    }

    .feature-cell:nth-child(even) {
        padding-left: 0;
    }

    .shots {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .rail { display: none; }
    .topbar, .hero, .meta-strip, .section, .foot { margin-left: 0; margin-right: 0; }
    .topnav { gap: 14px; font-size: 10px; letter-spacing: 0.12em; }
    .badge { width: 96px; height: 96px; }

    .meta-strip {
        grid-template-columns: 1fr;
    }
    .meta-cell {
        border-right: none;
        border-bottom: 1px solid var(--hairline-soft);
    }
    .meta-cell:last-child {
        border-bottom: none;
    }

    .foot {
        grid-template-columns: 1fr;
        gap: 16px;
        text-align: center;
        padding: 24px var(--pad-edge);
    }
    .foot > :last-child {
        justify-self: center;
    }
    .foot-nav {
        flex-wrap: wrap;
        gap: 12px 16px;
        justify-content: center;
    }
    .foot-brand {
        justify-content: center;
        flex-wrap: wrap;
        gap: 8px;
        font-size: 10.5px;
        line-height: 1.5;
    }

    .product-grid {
        grid-template-columns: 1fr !important;
    }
}

@media (max-width: 420px) {
    .topbar { flex-wrap: wrap; gap: 12px; }
    .topnav { width: 100%; justify-content: space-between; gap: 8px; }

    .hero-brand {
        width: clamp(96px, 28vw, 140px);
    }

    .feature-cell {
        padding: 24px 0;
    }

    .code-block pre {
        padding: 16px 14px;
        font-size: 11.5px;
    }
}