/* Sen product page — every token mirrors packages/sen_ui (app_theme.dart, ui_brand.dart)
   and docs/BRANDING_COLOR_SCHEME.md. Page chrome speaks the Simple-UI shape language
   (pill buttons, 14 cards); Developer mock-ups switch to the Developer token set. */

[data-theme="dark"], :root {
    --bg-base: #17171A;
    --bg-surface: #222226;
    --bg-elevated: #29292D;
    --bg-nav: #1D1D20;
    --bg-input: #1D1D20;
    --bg-hover: #2F2F35;
    --bg-active: #35353B;
    --border-subtle: #2F2F35;
    --border-default: #3C3C42;
    --border-strong: #5E5E67;
    --accent: #F5F5F8;
    --on-accent: #0F0F11;
    --text-1: #F0F0F3;
    --text-2: #A6A6B0;
    --text-3: #8F8F99;
    --text-4: #64646D;
    --code-bg: #141416;
    --bubble: #2F2F35;
    --canvas-simple: #1B1B1E;
    --composer: #222226;
    --composer-edge: var(--border-default);
    --shadow-subtle: 0 1px 2px rgba(0,0,0,.35);
    --shadow: 0 1px 0 rgba(0,0,0,.35), 0 12px 32px -12px rgba(0,0,0,.6);
    --float-shadow: 0 1px 0 rgba(0,0,0,.4), 0 18px 40px -14px rgba(0,0,0,.7);
    --ok-fg: #22C55E;
    --warn-fg: #F59E0B;
    color-scheme: dark;
}
[data-theme="light"] {
    --bg-base: #F9F9FB;
    --bg-surface: #FFFFFF;
    --bg-elevated: #FFFFFF;
    --bg-nav: #FBFBFC;
    --bg-input: #F3F3F5;
    --bg-hover: #F2F2F4;
    --bg-active: #E8E8EA;
    --border-subtle: #E6E6E9;
    --border-default: #C8C8CC;
    --border-strong: #96969A;
    --accent: #17171A;
    --on-accent: #F5F5F8;
    --text-1: #1C1C1E;
    --text-2: #535356;
    --text-3: #666669;
    --text-4: #8F8F92;
    --code-bg: #EEEEF1;
    --bubble: #F7F7F9;
    --canvas-simple: #FCFCFD;
    --composer: #FFFFFF;
    --composer-edge: rgba(28,28,30,.10);
    --shadow-subtle: 0 1px 2px rgba(28,28,30,.08);
    --shadow: 0 2px 4px rgba(28,28,30,.04), 0 10px 24px -8px rgba(28,28,30,.10);
    --float-shadow: 0 2px 4px rgba(28,28,30,.04), 0 24px 60px -24px rgba(28,28,30,.22);
    --ok-fg: #15803D;
    --warn-fg: #B45309;
    color-scheme: light;
}
[data-theme="midnight"] {
    --bg-base: #090B10;
    --bg-surface: #0E1016;
    --bg-elevated: #14161E;
    --bg-nav: #11131A;
    --bg-input: #11131A;
    --bg-hover: #171922;
    --bg-active: #1F2229;
    --border-subtle: #1F2229;
    --border-default: #262932;
    --border-strong: #4E5566;
    --accent: #7FB4FF;
    --on-accent: #090B10;
    --text-1: #E2E4EB;
    --text-2: #A0A3AC;
    --text-3: #8A8C96;
    --text-4: #565A66;
    --code-bg: #0C0E14;
    --bubble: #171922;
    --canvas-simple: #0B0D13;
    --composer: #0E1016;
    --composer-edge: var(--border-default);
    --shadow-subtle: 0 1px 2px rgba(16,26,46,.5);
    --shadow: 0 1px 0 rgba(16,26,46,.4), 0 12px 32px -12px rgba(16,26,46,.8);
    --float-shadow: 0 1px 0 rgba(16,26,46,.4), 0 18px 40px -14px rgba(16,26,46,.9);
    --ok-fg: #22C55E;
    --warn-fg: #F59E0B;
    color-scheme: dark;
}
:root {
    /* ModeBrandTokens.modeAccent + shared status palette (§5) */
    --ok: #22C55E;
    --warn: #F59E0B;
    --danger: #E06A6A;
    --sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
    --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
    /* Simple shape language (page chrome) */
    --r-card: 14px;
    --r-control: 9px;
    --r-small: 4px;
    --r-pill: 100px;
    /* Developer shape language (dev mock-ups) */
    --r-dev: 10px;
    --r-dev-input: 16px;
    --r-ctl: 7px;
    --r-simple: 14px;
    /* Motion: durationFast/Normal/Slow, popup, easeOutCubic / easeInOutCubic */
    --e-out: cubic-bezier(.33, 1, .68, 1);
    --e-io: cubic-bezier(.65, 0, .35, 1);
    --snap: var(--e-out);
    --stage: var(--e-io);
    --t-fast: 150ms;
    --t-med: 250ms;
    --content: 1280px;
    --gutter: clamp(20px, 5vw, 72px);
    --pad-x: max(var(--gutter), calc((100% - var(--content)) / 2));
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; background: #17171A; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }
body {
    margin: 0;
    background: var(--bg-base);
    color: var(--text-1);
    font: 400 16px/1.6 var(--sans);
    font-feature-settings: "cv11", "ss01";
    -webkit-font-smoothing: antialiased;
    overflow-x: clip;
}
img, svg { display: block; }
a { color: inherit; }
b { font-weight: 600; }
.ic { flex: none; }
h1, h2, h3 { margin: 0; font-weight: 600; letter-spacing: -.02em; line-height: 1.08; text-wrap: balance; }
h2 { font-size: clamp(32px, 3.4vw, 48px); letter-spacing: -.03em; }
h3 { font-size: 20px; letter-spacing: -.015em; }
p { margin: 0; }
/* Resting readable content stays at textPrimary; hierarchy is size + weight (§7.1). */
.lede { color: var(--text-1); font-size: clamp(16px, 1.2vw, 18px); line-height: 1.55; max-width: 56ch; }
/* AppGroupHeader: uppercase, w700, textSecondary. */
.eyebrow, .gh { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--text-2); }
.eyebrow { margin-bottom: 18px; }
.t-dim { color: var(--text-2); }
.t-strike { position: relative; display: inline-block; justify-self: start; color: var(--text-4); }
.t-strike::after { content: ""; position: absolute; left: 0; right: 0; top: 55%; height: 1px; background: var(--text-4); transform-origin: left; }
.skip { position: absolute; left: 12px; top: -48px; z-index: 100; padding: 8px 12px; background: var(--accent); color: var(--on-accent); border-radius: var(--r-control); }
.skip:focus { top: 12px; }
:focus-visible { outline: 2px solid var(--border-strong); outline-offset: 2px; border-radius: 4px; }

/* ───────── Kit: AppButton (Simple: pill) ───────── */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; height: 36px; padding: 0 18px; border-radius: var(--r-pill); font: 500 14px/1 var(--sans); text-decoration: none; border: 1px solid transparent; cursor: pointer; white-space: nowrap; transition: background-color var(--t-fast) var(--e-out), border-color var(--t-fast) var(--e-out), color var(--t-fast) var(--e-out), transform 100ms var(--e-out); }
.btn:active { transform: scale(.98); }
.btn--primary { background: var(--accent); color: var(--on-accent); }
.btn--primary:hover { background: color-mix(in srgb, var(--accent) 88%, var(--bg-base)); }
.btn--secondary { background: var(--bg-elevated); color: var(--text-1); border-color: var(--border-strong); }
.btn--secondary:hover { background: var(--bg-hover); }
.btn--sm { height: 28px; padding: 0 12px; font-size: 12px; gap: 6px; }
.btn--lg { height: 46px; padding: 0 24px; font-size: 15px; }

/* ───────── Kit: AppSegmentedControl — sunken track, raised pill ───────── */
.seg { position: relative; display: inline-grid; grid-auto-flow: column; grid-auto-columns: 1fr; padding: 3px; border-radius: var(--r-pill); background: var(--bg-input); border: 1px solid var(--border-subtle); }
.seg > button, .seg > span:not(.seg__pill) { all: unset; position: relative; z-index: 1; box-sizing: border-box; display: flex; align-items: center; justify-content: center; gap: 8px; color: var(--text-2); cursor: pointer; border-radius: var(--r-pill); transition: color var(--t-med) var(--e-out); white-space: nowrap; }
.seg > button:hover, .seg > button[aria-pressed="true"], .seg > button[aria-selected="true"], .seg > span.is-on { color: var(--text-1); font-weight: 600; }
.seg > button:focus-visible { outline: 2px solid var(--border-strong); outline-offset: -2px; }
.seg__pill { position: absolute; top: 3px; bottom: 3px; left: 3px; width: calc((100% - 6px) / var(--n, 3)); border-radius: var(--r-pill); background: var(--bg-elevated); border: 1px solid var(--border-default); box-shadow: var(--shadow-subtle); transform: translateX(calc(var(--at, 0) * 100%)); transition: transform 320ms var(--e-io); }
.seg--lg > button { height: 44px; padding: 0 24px; font-size: 15px; font-weight: 500; }
.seg--lg > button[aria-pressed="true"], .seg--lg > button[aria-selected="true"] { font-weight: 600; }
.seg--sm { padding: 2px; }
.seg--sm .seg__pill { top: 2px; bottom: 2px; left: 2px; width: calc((100% - 4px) / 3); }
.seg--sm > span:not(.seg__pill) { height: 22px; padding: 0 10px; font-size: 11px; gap: 5px; cursor: default; }

/* ───────── Kit: chips, LEDs, avatars ───────── */
.chip { display: inline-flex; align-items: center; gap: 6px; height: 24px; padding: 0 10px; border-radius: var(--r-pill); border: 1px solid var(--border-default); color: var(--text-1); font-size: 12px; white-space: nowrap; }
.mchip { display: inline-flex; align-items: center; gap: 6px; height: 24px; padding: 0 9px; border-radius: var(--r-pill); border: 1px solid var(--border-subtle); background: var(--bg-elevated); color: var(--text-1); font-size: 12px; white-space: nowrap; }
.mchip .ic { color: var(--text-2); }
.achip { display: inline-flex; align-items: center; height: 28px; padding: 0 12px; border-radius: var(--r-control); border: 1px solid var(--border-subtle); background: color-mix(in srgb, var(--text-1) 5%, transparent); color: var(--text-1); font-size: 13px; font-weight: 500; white-space: nowrap; }
.achip--primary { background: var(--accent); border-color: transparent; color: var(--on-accent); }
.led { flex: none; width: 7px; height: 7px; border-radius: 50%; background: var(--border-strong); }
.led--ok { background: var(--ok); box-shadow: 0 0 0 3px color-mix(in srgb, var(--ok) 18%, transparent); }
.led--run { background: var(--text-1); }
html.js:not(.reduce-motion) .led--run { animation: breathe 1.6s ease-in-out infinite; }
.av { font-style: normal; flex: none; width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: var(--bg-active); color: var(--text-1); border: 1px solid var(--border-default); font-size: 11px; font-weight: 600; }
.av--sm { width: 22px; height: 22px; font-size: 9px; }
.av--lg { width: 44px; height: 44px; font-size: 15px; }
.av--ivy { --c: #6E9BFF; } .av--max { --c: #E9A24B; } .av--nora { --c: #C283E0; }
.av--ivy, .av--max, .av--nora { background: color-mix(in srgb, var(--c) 26%, var(--bg-surface)); border-color: color-mix(in srgb, var(--c) 55%, var(--bg-surface)); color: color-mix(in srgb, var(--c) 72%, var(--text-1)); }
/* Mode tag — one segment of the app's mode switch, lifted out on its own */
.mode-tag { display: inline-flex; align-items: center; gap: 8px; height: 32px; padding: 0 14px 0 10px; border-radius: var(--r-pill); background: var(--bg-elevated); border: 1px solid var(--border-default); box-shadow: var(--shadow-subtle); font: 600 13px/1 var(--sans); letter-spacing: 0; color: var(--text-1); white-space: nowrap; }
.mode-tag .ic { color: var(--text-2); }
.ticks { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.ticks li { position: relative; padding-left: 24px; font-size: 15px; color: var(--text-1); }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 8px; width: 9px; height: 5px; border: solid var(--text-2); border-width: 0 0 1.5px 1.5px; transform: rotate(-45deg); }
.caret { display: inline-block; width: 1.5px; height: 1em; background: var(--text-1); vertical-align: -.15em; animation: blink 1.1s steps(1) infinite; }
@keyframes blink { 50% { opacity: 0; } }
@keyframes breathe { 50% { opacity: .35; } }
@keyframes orbit { to { transform: rotate(360deg); } }
@keyframes fade-in { from { opacity: 0; } }
@keyframes rise-in { from { opacity: 0; transform: translateY(10px); } }

/* ───────── SenOrbitMark — tile + two bubbles, "orbit & reconnect" ───────── */
.om { overflow: visible; }
.om__tile { fill: #fff; }
.om__b { fill: #111214; transform-box: view-box; transform-origin: 627px 627px; }
.om--bare .om__b { fill: currentColor; }
html.js:not(.reduce-motion) .om--hover:hover .om__b--top, html.js:not(.reduce-motion) .om--hover.is-play .om__b--top { animation: om-once-top 750ms linear; }
html.js:not(.reduce-motion) .om--hover:hover .om__b--bot, html.js:not(.reduce-motion) .om--hover.is-play .om__b--bot { animation: om-once-bot 750ms linear; }
html.js:not(.reduce-motion) .om--loop .om__b--top { animation: om-loop-top 1.5s linear infinite; }
html.js:not(.reduce-motion) .om--loop .om__b--bot { animation: om-loop-bot 1.5s linear infinite; }
/* Startup view rake: a soft shade band travels the mark's diagonal once per
   3.2s loop (62% sweep + rest), fading in and out at the edges — the glyph
   dims toward the canvas, never brightens. Two tracks keep the transform's
   sine easing intact while opacity fades linearly. */
.om__rake { transform: translate(-80%, -80%); opacity: 0; }
html.js:not(.reduce-motion) .om__rake { animation: om-rake-pos 3200ms cubic-bezier(.445, .05, .55, .95) 1700ms infinite, om-rake-op 3200ms linear 1700ms infinite; }
@keyframes om-rake-pos { 0% { transform: translate(-80%, -80%); } 62% { transform: translate(80%, 80%); } 100% { transform: translate(80%, 80%); } }
@keyframes om-rake-op { 0% { opacity: 0; } 11% { opacity: 1; } 51% { opacity: 1; } 62%, 100% { opacity: 0; } }
@keyframes om-once-top{0.0%{transform:rotate(0.0deg) translate(-0.0px,-0.0px)}8.3%{transform:rotate(0.4deg) translate(-0.5px,-0.5px)}16.7%{transform:rotate(3.3deg) translate(-4.3px,-4.3px)}25.0%{transform:rotate(11.2deg) translate(-14.4px,-14.4px)}33.3%{transform:rotate(26.7deg) translate(-33.2px,-33.2px)}41.7%{transform:rotate(52.1deg) translate(-58.3px,-58.3px)}50.0%{transform:rotate(90.0deg) translate(-73.9px,-73.9px)}58.3%{transform:rotate(127.9deg) translate(-58.3px,-58.3px)}66.7%{transform:rotate(153.3deg) translate(-33.2px,-33.2px)}75.0%{transform:rotate(168.8deg) translate(-14.4px,-14.4px)}83.3%{transform:rotate(176.7deg) translate(-4.3px,-4.3px)}91.7%{transform:rotate(179.6deg) translate(-0.5px,-0.5px)}100.0%{transform:rotate(180.0deg) translate(-0.0px,-0.0px)}}
@keyframes om-loop-top{0.0%{transform:rotate(0.0deg) translate(-0.0px,-0.0px)}4.6%{transform:rotate(0.4deg) translate(-0.5px,-0.5px)}9.2%{transform:rotate(3.3deg) translate(-4.3px,-4.3px)}13.8%{transform:rotate(11.2deg) translate(-14.4px,-14.4px)}18.3%{transform:rotate(26.7deg) translate(-33.2px,-33.2px)}22.9%{transform:rotate(52.1deg) translate(-58.3px,-58.3px)}27.5%{transform:rotate(90.0deg) translate(-73.9px,-73.9px)}32.1%{transform:rotate(127.9deg) translate(-58.3px,-58.3px)}36.7%{transform:rotate(153.3deg) translate(-33.2px,-33.2px)}41.2%{transform:rotate(168.8deg) translate(-14.4px,-14.4px)}45.8%{transform:rotate(176.7deg) translate(-4.3px,-4.3px)}50.4%{transform:rotate(179.6deg) translate(-0.5px,-0.5px)}55.0%{transform:rotate(180.0deg) translate(-0.0px,-0.0px)}100%{transform:rotate(180deg)}}
@keyframes om-once-bot{0.0%{transform:rotate(0.0deg) translate(0.0px,0.0px)}8.3%{transform:rotate(0.4deg) translate(0.5px,0.5px)}16.7%{transform:rotate(3.3deg) translate(4.3px,4.3px)}25.0%{transform:rotate(11.2deg) translate(14.4px,14.4px)}33.3%{transform:rotate(26.7deg) translate(33.2px,33.2px)}41.7%{transform:rotate(52.1deg) translate(58.3px,58.3px)}50.0%{transform:rotate(90.0deg) translate(73.9px,73.9px)}58.3%{transform:rotate(127.9deg) translate(58.3px,58.3px)}66.7%{transform:rotate(153.3deg) translate(33.2px,33.2px)}75.0%{transform:rotate(168.8deg) translate(14.4px,14.4px)}83.3%{transform:rotate(176.7deg) translate(4.3px,4.3px)}91.7%{transform:rotate(179.6deg) translate(0.5px,0.5px)}100.0%{transform:rotate(180.0deg) translate(0.0px,0.0px)}}
@keyframes om-loop-bot{0.0%{transform:rotate(0.0deg) translate(0.0px,0.0px)}4.6%{transform:rotate(0.4deg) translate(0.5px,0.5px)}9.2%{transform:rotate(3.3deg) translate(4.3px,4.3px)}13.8%{transform:rotate(11.2deg) translate(14.4px,14.4px)}18.3%{transform:rotate(26.7deg) translate(33.2px,33.2px)}22.9%{transform:rotate(52.1deg) translate(58.3px,58.3px)}27.5%{transform:rotate(90.0deg) translate(73.9px,73.9px)}32.1%{transform:rotate(127.9deg) translate(58.3px,58.3px)}36.7%{transform:rotate(153.3deg) translate(33.2px,33.2px)}41.2%{transform:rotate(168.8deg) translate(14.4px,14.4px)}45.8%{transform:rotate(176.7deg) translate(4.3px,4.3px)}50.4%{transform:rotate(179.6deg) translate(0.5px,0.5px)}55.0%{transform:rotate(180.0deg) translate(0.0px,0.0px)}100%{transform:rotate(180deg)}}
/* ───────── Dock — FloatingBubble: opaque fill, hairline, detached shadow ───────── */
.dock { position: fixed; left: 50%; bottom: 18px; transform: translateX(-50%); z-index: 50; display: flex; align-items: center; gap: 2px; padding: 5px; border-radius: var(--r-pill); background: var(--bg-surface); border: 1px solid var(--border-default); box-shadow: var(--float-shadow); font-size: 13px; }
.dock a { text-decoration: none; white-space: nowrap; color: var(--text-1); padding: 7px 13px; border-radius: var(--r-pill); transition: background-color var(--t-fast) var(--e-out); }
.dock a:hover { background: var(--bg-hover); }
.dock a.is-on { background: var(--bg-active); font-weight: 600; }
.dock__home { display: grid; place-items: center; width: 34px; height: 34px; padding: 0 !important; }
.dock__cta { background: var(--accent) !important; color: var(--on-accent) !important; font-weight: 500; margin-left: 4px; }
/* ───────── Footer ───────── */
.foot { display: flex; justify-content: space-between; align-items: center; gap: 24px; padding: 24px var(--pad-x) 96px; border-top: 1px solid var(--border-subtle); font-size: 13px; }
.foot__l { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.foot__l .t-dim { font-weight: 400; }
.foot__r { display: flex; gap: 20px; font-size: 13px; color: var(--text-2); }
.foot__r a { color: var(--text-1); text-decoration: none; }
.foot__r a:hover { text-decoration: underline; }
.btn--ghost { background: transparent; color: var(--text-1); }
.btn--ghost:hover { background: var(--bg-hover); }
/* ───────── Shared ───────── */
.sec-head { max-width: 760px; margin-bottom: 88px; }
.sec-head h2 { font-size: clamp(40px, 5.2vw, 76px); letter-spacing: -.045em; line-height: .98; }
.sec-head .lede { margin-top: 22px; color: var(--text-2); font-size: clamp(17px, 1.35vw, 20px); }
.sec-head--center { margin-inline: auto; text-align: center; }
.sec-head--center .lede { margin-inline: auto; }
.card { background: var(--bg-surface); border: 1px solid var(--border-default); border-radius: 18px; box-shadow: 0 1px 0 rgba(255,255,255,.03) inset, 0 40px 80px -40px rgba(0,0,0,.85); }
.mark { width: 40px; height: 40px; display: grid; place-items: center; border: 1px solid var(--border-subtle); border-radius: var(--r-control); background: var(--bg-surface); color: var(--text-1); }
.mark svg { width: 20px; height: 20px; filter: grayscale(1) contrast(1.1); }
/* ───────── Acts: pinned stages driven by the scroll engine (--p) ───────── */
.act { position: relative; border-top: 1px solid var(--border-subtle); }
.act__stage { position: relative; padding: 120px var(--pad-x); }
.act__cue { display: flex; align-items: center; gap: 24px; margin-bottom: 72px; }
.act__cue h2 { font-size: clamp(40px, 5.2vw, 76px); letter-spacing: -.045em; line-height: .98; }
.rail { display: none; }
.act__cue--mode { flex-direction: column; align-items: flex-start; gap: 18px; }
.act__cue--mode .lede { color: var(--text-2); font-size: clamp(17px, 1.35vw, 20px); max-width: 44ch; }

html.js:not(.reduce-motion) .act__stage { position: sticky; top: 0; height: 100svh; padding-top: 44px; padding-bottom: 44px; overflow: hidden; }
html.js:not(.reduce-motion) .act__cue { position: absolute; left: var(--pad-x); right: var(--pad-x); top: 40px; margin: 0; justify-content: space-between; z-index: 3; }
html.js:not(.reduce-motion) .act__cue h2 { font-size: 15px; letter-spacing: -.005em; font-weight: 600; line-height: 1; }
html.js:not(.reduce-motion) .act__cue--mode { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; grid-template-areas: "tag h2 rail" "lede lede lede"; align-items: center; justify-content: stretch; column-gap: 14px; row-gap: 10px; }
html.js:not(.reduce-motion) .act__cue--mode .mode-tag { grid-area: tag; justify-self: start; }
html.js:not(.reduce-motion) .act__cue--mode h2 { grid-area: h2; }
html.js:not(.reduce-motion) .act__cue--mode .lede { grid-area: lede; max-width: 80ch; font-size: 14px; line-height: 1.45; }
html.js:not(.reduce-motion) .act__cue--mode .rail { grid-area: rail; }
/* Chapter rail — one segment per beat, filled by scene progress */
html.js:not(.reduce-motion) .rail { display: flex; gap: 6px; width: min(240px, 40vw); --n: 3; }
html.js:not(.reduce-motion) .rail--4 { --n: 4; }
.rail i { flex: 1; height: 2px; border-radius: 2px; background: var(--border-default); overflow: hidden; position: relative; }
.rail i::after { content: ""; position: absolute; inset: 0; background: var(--text-1); transform-origin: left; transform: scaleX(clamp(0, var(--p, 0) * var(--n) - var(--k), 1)); }
.rail i:nth-child(1) { --k: 0; } .rail i:nth-child(2) { --k: 1; } .rail i:nth-child(3) { --k: 2; } .rail i:nth-child(4) { --k: 3; }
@media (prefers-reduced-motion: reduce) {
    .caret, .composer__caret, .btn__spin, .led--run { animation: none; }
}

/* ───────── Responsive (shared) ───────── */
@media (max-width: 1024px) {
    .sec-head { margin-bottom: 64px; }
}
@media (max-width: 640px) {
    .sec-head h2, .act__cue h2 { font-size: 42px; }
    .act__stage { padding-top: 96px; padding-bottom: 96px; }
    html.js:not(.reduce-motion) .rail { width: 30vw; }
    html.js:not(.reduce-motion) .act__cue--mode { grid-template-columns: minmax(0, 1fr) auto; grid-template-areas: "tag rail" "h2 h2"; }
    html.js:not(.reduce-motion) .act__cue--mode .lede { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
    .dock { bottom: 10px; font-size: 12px; max-width: calc(100vw - 20px); padding: 4px; gap: 0; }
    .dock a { padding: 7px 9px; }
    .dock__home { width: 30px; height: 30px; }
    .dock__opt { display: none; }
    .foot { flex-direction: column; align-items: flex-start; }
}

/* Dock appears once the hero is half scrolled away (JS); always visible without JS. */
html.js .dock { opacity: 0; pointer-events: none; transform: translate(-50%, 16px); transition: opacity var(--t-med) var(--e-out), transform var(--t-med) var(--e-out); }
html.js .dock.is-shown { opacity: 1; pointer-events: auto; transform: translateX(-50%); }

/* Shared cookie banner, re-skinned to the page tokens and parked clear of the dock. */
body .cookie-banner { left: 18px; right: auto; bottom: 18px; transform: none; max-width: 380px; gap: 14px; padding: 14px 16px; border-radius: var(--r-card); background: var(--bg-surface); border: 1px solid var(--border-default); box-shadow: var(--float-shadow); backdrop-filter: none; -webkit-backdrop-filter: none; font: 400 13px/1.5 var(--sans); color: var(--text-2); letter-spacing: 0; animation: fade-in 300ms var(--e-out) both; }
body .cookie-banner.is-dismissed { transform: translateY(12px); }
body .cookie-banner a { color: var(--text-1); text-decoration-color: var(--border-strong); }
body .cookie-banner a:hover { text-decoration-color: var(--text-1); }
body .cookie-accept { height: 32px; padding: 0 16px; border-radius: var(--r-pill); background: var(--accent); color: var(--on-accent); box-shadow: none; font: 500 13px/1 var(--sans); letter-spacing: 0; text-transform: none; transition: background-color var(--t-fast) var(--e-out); }
body .cookie-accept:hover { transform: none; box-shadow: none; background: color-mix(in srgb, var(--accent) 88%, var(--bg-base)); }
body .cookie-accept:focus-visible { outline: 2px solid var(--border-strong); }
@media (max-width: 1100px) { body .cookie-banner { bottom: 76px; } }
@media (max-width: 540px) { body .cookie-banner { left: 10px; right: 10px; max-width: none; bottom: 64px; flex-direction: row; align-items: center; font-size: 12px; } body .cookie-accept { width: auto; font-size: 12px; } }

/* Rows with a small icon tile — SenBot's list of what makes a bot */
.promises { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--border-subtle); }
.promise { display: grid; grid-template-columns: 36px minmax(0, 1fr); gap: 18px; padding: 26px 0; border-bottom: 1px solid var(--border-subtle); }
.promise__ic { display: grid; place-items: center; width: 36px; height: 36px; border-radius: var(--r-control); border: 1px solid var(--border-subtle); background: var(--bg-surface); color: var(--text-1); }
.promise h3 { font-size: clamp(19px, 1.5vw, 21px); margin-bottom: 8px; }
.promise p { color: var(--text-2); font-size: 16px; line-height: 1.55; max-width: 48ch; }