:root {
  font-family: "IBM Plex Sans", sans-serif;
  color-scheme: dark;
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
  --bg: #f7f7f3;
  --paper: #fbfbf8;
  --text: #2b2823;
  --muted: #746d63;
  --border: rgba(43, 40, 35, .14);
  --surface: rgba(255, 255, 255, .18);
  --cursor: #2f7d4a;
  --crt-green: #2f7d4a;
  --media-surface: #eeeee9;
  --viewer-surface: #e3e1d9;
  --button-ink: #f7fbf6;
}
* { box-sizing: border-box; }
html { background: var(--bg); }
body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(ellipse at 50% 0%, color-mix(in srgb, var(--accent) 7%, transparent), transparent 54%),
    linear-gradient(180deg, var(--paper), var(--bg));
  transition: color .2s, background-color .2s;
  --accent: var(--cursor);
  --line: var(--border);
  --line-soft: var(--border);
  --bright: var(--text);
  --soft: var(--muted);
  --glow: color-mix(in srgb, var(--accent) 10%, transparent);
}
body[data-mode="dark"] {
  --bg: #030604;
  --paper: #080e0a;
  --text: #d8eddd;
  --muted: #82a08a;
  --border: rgba(145, 205, 160, .28);
  --surface: rgba(110, 190, 130, .07);
  --cursor: #b0d1bb;
  --crt-green: #45ed72;
  --media-surface: #070d09;
  --viewer-surface: #040705;
  --button-ink: #061008;
}
body[data-mode="light"] {
  --bg: #d5dfd5;
  --paper: #e3ebe2;
  --text: #20392a;
  --muted: #607764;
  --border: rgba(34, 82, 47, .28);
  --surface: rgba(49, 115, 64, .06);
  --cursor: #20392a;
  --crt-green: #2f7d4a;
  --media-surface: #ced9ce;
  --viewer-surface: #c4d0c4;
}
body[data-mode="dark"][data-theme="paper"] { --cursor: #c5e4ce; }
body[data-mode="dark"][data-theme="green"] { --cursor: #45f176; }
body[data-mode="dark"][data-theme="amber"] { --cursor: #ffbd55; }
body[data-mode="light"][data-theme="paper"] { --cursor: #20392a; }
body[data-mode="light"][data-theme="green"] { --cursor: #16713a; }
body[data-mode="light"][data-theme="amber"] { --cursor: #8c5813; }
body[data-mode="dark"][data-theme="paper"] { --crt-green: #c5e4ce; --border: rgba(190, 220, 198, .28); }
body[data-mode="dark"][data-theme="green"] { --crt-green: #45f176; --border: rgba(69, 241, 118, .25); }
body[data-mode="dark"][data-theme="amber"] { --crt-green: #ffbd55; --border: rgba(255, 189, 85, .27); }
body[data-mode="light"][data-theme="paper"] { --crt-green: #52675a; --border: rgba(55, 83, 64, .27); }
body[data-mode="light"][data-theme="green"] { --crt-green: #16713a; --border: rgba(22, 113, 58, .3); }
body[data-mode="light"][data-theme="amber"] { --crt-green: #8c5813; --border: rgba(140, 88, 19, .3); }
body::before {
  position: fixed;
  z-index: 2;
  inset: 0;
  content: "";
  pointer-events: none;
  opacity: .2;
  background:
    repeating-linear-gradient(to bottom, transparent 0 2px, rgba(0, 0, 0, .44) 2px 3px),
    radial-gradient(ellipse at center, transparent 45%, color-mix(in srgb, var(--accent) 12%, rgba(0, 0, 0, .38)) 100%);
}
body[data-mode="light"]::before { opacity: .1; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
button:focus-visible, a:focus-visible, video:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.skip-link { position: absolute; z-index: 5; top: -64px; left: 1rem; padding: .5rem .75rem; background: var(--text); color: var(--bg); }
.skip-link:focus { top: 1rem; }
.site-shell {
  position: relative;
  z-index: 1;
  width: min(calc(100% - 2rem), 1040px);
  margin: 0 auto;
  padding: 1rem 0 3.5rem;
}
.site-header, .site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: .8rem 0;
}
.site-header { border-bottom: 1px solid var(--border); }
.brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  color: var(--text);
  text-decoration: none;
}
.brand-prompt { color: var(--crt-green); font-family: "Courier Prime", monospace; }
.wordmark, .mode-toggle, .eyebrow, .section-index, .feature-number, .module-list li, .visual-topline, .visual-bottomline, .instrument-header, .instrument-footer, .video-label, .media-hint, .media-dialog-header, .media-close, .site-footer {
  font-family: "Courier Prime", monospace;
}
.wordmark { font-size: 1.15rem; font-weight: 400; white-space: nowrap; }
.brand-cursor {
  display: inline-block;
  width: .72em;
  height: .12em;
  margin-left: .08em;
  background: var(--crt-green);
  vertical-align: -.12em;
  animation: cursor-blink 1.25s steps(1, end) infinite;
}
.mode-toggle {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  min-height: 36px;
  padding: .32rem .55rem;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  font-family: "Courier Prime", monospace;
  font-size: .78rem;
  letter-spacing: .035em;
  line-height: 1;
}
.mode-toggle:hover, .mode-toggle:focus-visible { border-color: var(--accent); box-shadow: 0 0 10px var(--glow); }
.mode-name { color: var(--muted); }
.mode-label { padding: .18rem .35rem; border-radius: 999px; background: color-mix(in srgb, var(--text) 8%, transparent); }
main { display: grid; gap: 1.5rem; padding: .75rem 0 0; }
.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.65fr) minmax(180px, 220px);
  gap: 2rem;
  align-items: center;
  padding: 1rem 0 2rem;
  border-bottom: 1px solid var(--border);
}
h1, h2, h3, p { margin-top: 0; }
h1, h2, h3 { font-family: "Courier Prime", monospace; font-weight: 400; text-shadow: 0 0 14px color-mix(in srgb, var(--accent) 22%, transparent); }
h1 { max-width: 14ch; margin-bottom: 0; font-size: clamp(1.75rem, 3vw, 2.2rem); line-height: 1.22; }
h2 { margin: 0 0 .65rem; font-size: clamp(1.1rem, 1.5vw, 1.3rem); line-height: 1.4; }
h3 { margin: 0; font-size: .98rem; line-height: 1.45; }
.eyebrow, .section-index { margin: 0 0 .7rem; color: var(--muted); font-size: .78rem; font-weight: 400; letter-spacing: .01em; text-transform: uppercase; }
.hero-description, .profile-intro p, .section-heading > p { max-width: 68ch; color: var(--muted); font-size: .98rem; line-height: 1.78; }
.hero-description { margin: 1rem 0 0; }
.hero-actions { display: flex; margin-top: .85rem; }
.button { display: inline-flex; min-height: 44px; align-items: center; justify-content: center; padding: .6rem 1rem; border: 1px solid var(--border); color: var(--text); font-family: "Courier Prime", monospace; font-size: .8rem; font-weight: 600; letter-spacing: .01em; text-decoration: none; transition: transform .15s ease, box-shadow .15s ease, filter .15s ease; }
.button-primary { border-color: var(--accent); background: var(--accent); color: var(--button-ink); box-shadow: 0 0 16px var(--glow), inset 0 1px 0 rgba(255, 255, 255, .28); text-shadow: none; }
.button:hover { border-color: var(--accent); box-shadow: 0 0 12px var(--glow), inset 0 0 12px var(--glow); }
.button-primary:hover { box-shadow: 0 0 22px var(--glow), inset 0 0 16px rgba(255, 255, 255, .18); filter: brightness(1.08); transform: translateY(-1px); }
.hero-facts { display: flex; flex-wrap: wrap; gap: 1.75rem; max-width: 570px; margin-top: 1.25rem; padding-top: .9rem; border-top: 1px solid var(--border); }
.hero-facts div { display: flex; flex-direction: column; gap: 2px; min-width: 68px; }
.hero-facts b { color: var(--text); font-family: "Courier Prime", monospace; font-size: 1.1rem; line-height: 1.1; }
.hero-facts span { color: var(--muted); font-family: "Courier Prime", monospace; font-size: .65rem; letter-spacing: .04em; }
.hero-visual { display: flex; flex-direction: column; min-width: 0; border: 1px solid var(--border); background: linear-gradient(145deg, color-mix(in srgb, var(--accent) 5%, var(--paper)), var(--paper) 64%); box-shadow: inset 0 0 28px color-mix(in srgb, var(--accent) 5%, transparent), 0 0 24px var(--glow); }
.visual-topline, .visual-bottomline { display: flex; align-items: center; justify-content: space-between; gap: .5rem; padding: .5rem 0; color: var(--muted); font-size: .62rem; letter-spacing: .02em; }
.visual-topline { border-bottom: 1px solid var(--border); }
.visual-bottomline { border-top: 1px solid var(--border); }
.visual-topline .status { color: var(--crt-green); text-shadow: 0 0 8px var(--glow); white-space: nowrap; }
.hero-screen-wrap { position: relative; display: grid; min-height: 350px; place-items: center; overflow: hidden; padding: .5rem; }
.screen-halo { position: absolute; width: 180px; height: 260px; border-radius: 50%; background: var(--glow); filter: blur(42px); opacity: .6; }
.hero-visual::before { display: none; }
.hero-video-poster { position: relative; display: block; width: auto; height: min(340px, 35vw); max-width: 90%; border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--border)); border-radius: 10px; object-fit: contain; box-shadow: 0 0 26px var(--glow), 0 10px 28px rgba(0, 0, 0, .36); }
.profile-bar { display: grid; grid-template-columns: minmax(190px, .8fr) minmax(0, 1.5fr); align-items: center; gap: 1.5rem; padding: .25rem 0 1rem; border-bottom: 1px solid var(--border); }
.profile-intro .section-index { margin-bottom: .3rem; }
.profile-intro h2 { margin: 0 0 .25rem; font-size: 1.05rem; }
.profile-intro p { margin: 0; font-size: .88rem; }
.theme-options { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .55rem; }
.theme-option {
  display: flex;
  align-items: center;
  gap: .5rem;
  min-width: 0;
  padding: .5rem .55rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--muted);
  cursor: pointer;
  text-align: left;
  font-size: .75rem;
  line-height: 1.25;
}
.theme-option:hover, .theme-option[aria-pressed="true"] { border-color: var(--accent); color: var(--text); }
.theme-option[aria-pressed="true"] { box-shadow: inset 0 -2px 0 var(--accent); }
.theme-option small { margin-left: auto; color: var(--muted); font-family: "Courier Prime", monospace; font-size: .65rem; }
.swatch { width: 12px; height: 12px; flex: none; border: 1px solid var(--border); border-radius: 50%; }
.swatch-paper { background: #f1f2ec; }
.swatch-green { background: #46a85f; }
.swatch-amber { background: #b88426; }
.content-section, .screens-section { padding: .25rem 0; }
.section-heading { display: flex; align-items: start; justify-content: space-between; gap: 2rem; margin-bottom: .75rem; }
.section-heading .section-index { margin-bottom: .35rem; }
.section-heading h2 { margin-bottom: 0; }
.section-heading > p { max-width: 42ch; margin: .25rem 0 0; }
.reference-layout { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(250px, .85fr); align-items: start; gap: 1.4rem; }
.feature-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.feature-card { min-width: 0; padding: .8rem; border: 1px solid var(--border); background: repeating-linear-gradient(to bottom, transparent 0 3px, color-mix(in srgb, var(--accent) 2%, transparent) 3px 4px), linear-gradient(145deg, color-mix(in srgb, var(--accent) 4%, var(--paper)), var(--paper) 70%); box-shadow: inset 0 0 20px color-mix(in srgb, var(--accent) 4%, transparent); }
.feature-number { display: flex; align-items: center; justify-content: space-between; gap: .4rem; margin-bottom: .5rem; color: var(--muted); font-size: .72rem; letter-spacing: .02em; }
.feature-number small { color: var(--muted); font-size: .62rem; white-space: nowrap; }
.feature-card h3 { margin-bottom: .55rem; color: var(--text); font-size: .95rem; }
.module-list { display: grid; grid-template-columns: 1fr; gap: 0; margin: .6rem 0 0; padding: 0; border-top: 1px solid var(--border); list-style: none; }
.module-list li { padding: .34rem 0; border-bottom: 1px solid var(--border); color: var(--muted); font-family: "IBM Plex Sans", sans-serif; font-size: .82rem; line-height: 1.4; }
.shell-instrument { min-width: 0; border: 1px solid var(--border); background: var(--paper); box-shadow: inset 0 0 24px var(--glow); }
.instrument-header, .instrument-footer { display: flex; align-items: center; justify-content: space-between; gap: .6rem; padding: .55rem 0; color: var(--muted); font-family: "Courier Prime", monospace; font-size: .62rem; letter-spacing: .02em; }
.instrument-header { border-bottom: 1px solid var(--border); }
.instrument-footer { border-top: 1px solid var(--border); }
.instrument-status { display: flex; align-items: center; gap: .4rem; color: var(--crt-green); text-shadow: 0 0 8px var(--glow); white-space: nowrap; }
.instrument-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--crt-green); }
.shell-flow { display: grid; min-height: 255px; align-content: center; gap: 1.35rem; padding: 1rem .75rem; background: repeating-linear-gradient(to bottom, transparent 0 3px, color-mix(in srgb, var(--accent) 3%, transparent) 3px 4px), radial-gradient(ellipse at center, var(--glow), transparent 68%); }
.shell-flow-command { display: flex; align-items: center; justify-content: space-between; gap: .5rem; padding: .55rem .6rem; border: 1px solid var(--border); background: color-mix(in srgb, var(--paper) 72%, transparent); color: var(--text); font-family: "Courier Prime", monospace; font-size: .68rem; }
.shell-flow-command b, .shell-flow-readouts { color: var(--muted); font-size: .58rem; font-weight: 400; letter-spacing: .03em; white-space: nowrap; }
.shell-flow-stages { position: relative; display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr); align-items: center; gap: .3rem; }
.shell-flow-stages > div { display: grid; min-width: 0; gap: .35rem; padding: .55rem .35rem; border: 1px solid var(--border); background: color-mix(in srgb, var(--surface) 45%, transparent); text-align: center; }
.shell-flow-stages small { overflow: hidden; color: var(--muted); font-family: "Courier Prime", monospace; font-size: .48rem; letter-spacing: .025em; text-overflow: ellipsis; white-space: nowrap; }
.shell-flow-stages strong { color: var(--accent); font-family: "Courier Prime", monospace; font-size: .62rem; font-weight: 400; }
.shell-flow-stages > span { color: var(--crt-green); font-size: .8rem; }
.shell-flow-stages > .shell-flow-packet { position: absolute; z-index: 2; top: 50%; left: 8%; width: 5px; height: 5px; border-radius: 50%; background: var(--bright); box-shadow: 0 0 0 5px var(--glow), 0 0 12px var(--accent); opacity: 0; pointer-events: none; transform: translate(-50%, -50%); animation: shell-packet-travel 4s linear infinite; }
.shell-flow-readouts { display: flex; justify-content: space-between; gap: .35rem; padding-top: .6rem; border-top: 1px solid var(--border); }
.shell-flow-readouts b { color: var(--crt-green); text-shadow: 0 0 8px var(--glow); font-weight: 400; }
.screens-section { padding-top: .25rem; }
.screens-gallery { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: .9rem; }
.screenshot-card { min-width: 0; margin: 0; border-top: 1px solid var(--border); background: transparent; }
.screenshot-stage { display: flex; height: 250px; align-items: center; justify-content: center; overflow: hidden; padding: .65rem; border: 1px solid var(--border); border-radius: 4px; background: var(--viewer-surface); box-shadow: inset 0 0 20px var(--glow), 0 0 16px var(--glow); }
.screenshot-stage img { display: block; max-width: 100%; max-height: 100%; border: 1px solid color-mix(in srgb, var(--accent) 36%, var(--border)); border-radius: 7px; object-fit: contain; box-shadow: 0 0 16px var(--glow), 0 6px 22px rgba(0, 0, 0, .4); }
.media-trigger { position: relative; width: 100%; color: var(--text); cursor: zoom-in; }
.media-trigger:hover { background: color-mix(in srgb, var(--accent) 5%, var(--surface)); }
.media-trigger img { transition: transform .2s ease; }
.media-trigger:hover img { transform: scale(1.02); }
.video-trigger { cursor: pointer; }
.hero-video-trigger { width: auto; padding: 0; border: 0; background: transparent; cursor: pointer; }
.media-trigger:hover.hero-video-trigger { background: transparent; }
.media-hint { position: absolute; right: .45rem; bottom: .45rem; padding: .2rem .35rem; border: 1px solid var(--border); background: color-mix(in srgb, var(--paper) 94%, transparent); color: var(--text); font-size: .62rem; line-height: 1.2; text-shadow: 0 0 8px var(--glow); }
.media-hint .cue-play { margin-right: .2rem; color: var(--accent); font-size: .9em; }
.screenshot-card figcaption { display: flex; align-items: baseline; justify-content: space-between; gap: .6rem; padding: .5rem 0; border-top: 1px solid var(--border); color: var(--muted); font-size: .75rem; }
.screenshot-card figcaption strong { color: var(--text); font-weight: 500; }
.media-dialog { width: min(94vw, 1100px); max-width: 1100px; max-height: 94vh; max-height: 94dvh; padding: 0; border: 1px solid color-mix(in srgb, var(--accent) 45%, var(--border)); background: var(--paper); color: var(--text); box-shadow: 0 0 30px var(--glow), 0 25px 90px rgba(0, 0, 0, .65); }
.media-dialog[open] { display: flex; flex-direction: column; }
.media-dialog::backdrop { background: rgba(0, 0, 0, .7); backdrop-filter: blur(5px); }
.media-dialog-header { display: flex; min-height: 46px; align-items: center; justify-content: space-between; gap: 1rem; padding: .45rem .7rem; border-bottom: 1px solid var(--border); color: var(--muted); font-size: .78rem; }
.media-close { min-height: 32px; padding: .3rem .55rem; border: 1px solid var(--border); background: var(--surface); color: var(--text); cursor: pointer; font-size: .72rem; }
.media-dialog-body { display: grid; min-height: 0; place-items: center; padding: 1rem; background: var(--viewer-surface); box-shadow: inset 0 0 36px var(--glow); }
.media-dialog-body [hidden] { display: none; }
.media-dialog-body img, .media-dialog-body video { display: block; width: auto; max-width: 100%; max-height: calc(94vh - 84px); max-height: calc(94dvh - 84px); border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--border)); border-radius: 7px; object-fit: contain; box-shadow: 0 0 24px var(--glow), 0 6px 22px rgba(0, 0, 0, .4); }
.media-dialog-body video { overflow: hidden; background: #000; }
.site-footer { align-items: center; margin-top: 1rem; border-top: 1px solid var(--border); color: var(--muted); font-size: .72rem; }
.site-footer a:hover { color: var(--text); }
.site-footer .muted { color: var(--muted); }
@keyframes cursor-blink { 0%, 46%, 100% { opacity: 1; } 47%, 88% { opacity: 0; } }
@keyframes shell-packet-travel { 0% { left: 8%; opacity: 0; } 5%, 95% { opacity: 1; } 100% { left: 92%; opacity: 0; } }
@media (max-width: 900px) {
  .site-shell { width: min(calc(100% - 2rem), 760px); }
  .hero { grid-template-columns: minmax(0, 1fr) minmax(170px, 220px); gap: 1.25rem; }
  .hero-screen-wrap { min-height: 310px; }
  .hero-video-poster { height: min(300px, 36vw); }
  .profile-bar { grid-template-columns: 1fr; gap: .75rem; }
  .reference-layout { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .screens-gallery { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 600px) {
  .site-shell { width: min(calc(100% - 1rem), 540px); padding-top: .5rem; }
  .site-header { flex-wrap: wrap; gap: .6rem; padding: .65rem 0; }
  .brand { flex: 1 1 auto; }
  .wordmark { font-size: 1rem; }
  .hero { grid-template-columns: 1fr; gap: 1rem; padding-bottom: 1rem; }
  .hero-copy { order: 0; }
  .hero-visual { order: 1; }
  .hero-screen-wrap { min-height: 290px; }
  .hero-video-poster { height: 275px; }
  .hero-facts { gap: 1.2rem; }
  .theme-options { grid-template-columns: 1fr; }
  .section-heading { display: block; }
  .section-heading > p { margin-top: .5rem; }
  .feature-grid { grid-template-columns: 1fr; gap: 1rem; }
  .feature-card { padding-top: .75rem; }
  .module-list li { font-size: .78rem; }
  .shell-flow { min-height: 220px; }
  .shell-flow-stages { gap: .18rem; }
  .shell-flow-stages > div { padding: .45rem .2rem; }
  .shell-flow-stages strong { font-size: .55rem; }
  .screens-gallery { gap: .7rem; }
  .screenshot-stage { height: 220px; padding: .4rem; }
  .screenshot-card figcaption { align-items: start; flex-direction: column; gap: .15rem; }
  .media-dialog { max-height: 92dvh; }
  .media-dialog-body { padding: .6rem; }
  .media-dialog-body img, .media-dialog-body video { max-height: calc(92vh - 66px); max-height: calc(92dvh - 66px); }
  .site-footer { align-items: flex-start; flex-direction: column; gap: .45rem; }
}
@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
  .brand-cursor, .media-trigger img { animation: none; transition: none; }
  .shell-flow-stages > .shell-flow-packet { left: 42%; opacity: 1; animation: none; }
}