:root {
  --o-bg: #0c1414; --o-panel: #101c1a; --o-ink: #bddec5; --o-muted: #819f8b;
  --o-accent: #ddb868; --o-ascii: #b4d8a9; --o-line: #31483a; --o-title-bg: #1b291f;
  --o-bar-1: #ddb868; --o-bar-2: #c47745; --o-bar-3: #eddbad; --o-bar-4: #aeb579; --o-bar-5: #6da698;
  --o-bar-1-ink: #172019; --o-bar-2-ink: #172019; --o-bar-3-ink: #172019; --o-bar-4-ink: #172019; --o-bar-5-ink: #172019;
  --o-menu-ink: #f3eee2; --o-menu-muted: #bec5b3; --o-accent-ink: #172019; --o-focus: #f3eee2;
  --o-scan: .10; --o-split: 46; --page-gutter: clamp(0px, 1.6vw, 24px);
  color-scheme: dark;
  font: 14px/1.5 "Courier New", Courier, monospace;
}
* { box-sizing: border-box; }
body { margin: 0; background: #070e0d; color: var(--o-ink); padding: var(--page-gutter); }
button, input, select { font: inherit; }
button, summary { touch-action: manipulation; }
button { cursor: pointer; }
button:disabled { cursor: default; opacity: .45; }
button, select, input { border-radius: 0; }
button:focus-visible, a:focus-visible, summary:focus-visible, input:focus-visible, select:focus-visible, [tabindex]:focus-visible { outline: 2px solid var(--o-focus); outline-offset: 3px; }
.o-menu > summary:focus-visible { outline-color: currentColor; outline-offset: -4px; }
.o-wordmark a:focus-visible, .o-language select:focus-visible { outline-color: currentColor; }
[hidden] { display: none !important; }
a { color: inherit; text-underline-offset: 3px; }
.skip-link { position: fixed; top: 8px; left: 12px; z-index: 100; padding: 10px 14px; color: #172019; background: #eddbad; transform: translateY(-150%); }
.skip-link:focus { transform: none; }
.o-app { height: calc(var(--o-viewport-height, 100dvh) - var(--page-gutter) * 2); min-height: 0; min-width: 0; width: 100%; max-width: 1560px; margin: 0 auto; display: flex; flex-direction: column; background: var(--o-bg); color: var(--o-ink); border: 1px solid var(--o-line); border-radius: 8px; box-shadow: 0 16px 70px #0005; isolation: isolate; }
.o-bar { display: flex; flex-shrink: 0; position: relative; z-index: 20; border-radius: 7px 7px 0 0; background: var(--o-bar-3); }
.o-wordmark { background: var(--o-bar-1); color: var(--o-bar-1-ink); padding: 14px 23px; flex: 1.4; white-space: nowrap; letter-spacing: .22em; border-radius: 7px 0 0 0; }
.o-wordmark { display: flex; align-items: center; justify-content: space-between; gap: 14px; }
.o-brand { white-space: nowrap; }
.o-brand span { opacity: .75; }
.o-language { display: flex; letter-spacing: normal; }
.o-language select { width: 90px; padding: 4px; border: 1px solid currentColor; color: inherit; background: transparent; font-size: 11px; }
.o-language option { background: var(--o-panel); color: var(--o-menu-ink); }
.o-top-links { display: flex; align-items: center; gap: 14px; letter-spacing: normal; }
.o-portfolio-link { display: inline-flex; align-items: center; gap: 4px; min-height: 30px; font-size: 11px; text-decoration-thickness: 1px; }
.o-library-link { color: var(--o-accent); }
#startup-note { margin-bottom: 18px; }
#preview-startup { margin-top: 0; }
.o-menu { flex: 1; position: relative; min-width: 74px; background: var(--o-bar-2); color: var(--o-bar-2-ink); }
.o-menu[data-menu="colors"] { background: var(--o-bar-3); color: var(--o-bar-3-ink); }
.o-menu[data-menu="object"] { background: var(--o-bar-4); color: var(--o-bar-4-ink); }
.o-menu[data-menu="sound"] { background: var(--o-bar-5); color: var(--o-bar-5-ink); }
.o-menu[data-menu="session"] { background: var(--o-bar-1); color: var(--o-bar-1-ink); }
.o-menu[data-menu="help"] { background: var(--o-bar-2); color: var(--o-bar-2-ink); border-radius: 0 7px 0 0; }
.o-menu summary { cursor: pointer; user-select: none; padding: 14px 13px; list-style: none; white-space: nowrap; text-align: center; }
.o-menu summary::-webkit-details-marker { display: none; }
.o-menu summary::after { content: "⌄"; margin-left: 8px; font-size: 11px; }
.o-menu[open] summary { box-shadow: inset 0 -3px currentColor; }
.o-dropdown { position: absolute; top: 100%; left: 0; width: 265px; max-height: min(660px, var(--o-menu-space, calc(100dvh - 110px))); overflow: auto; overscroll-behavior: contain; padding: 19px; background: var(--o-panel); color: var(--o-menu-ink); border: 1px solid var(--o-menu-muted); box-shadow: 0 8px 28px #0009; font-size: 13px; }
.o-menu[data-menu="sound"] .o-dropdown, .o-menu[data-menu="session"] .o-dropdown, .o-menu[data-menu="help"] .o-dropdown { left: auto; right: 0; }
.o-field { display: flex; align-items: center; flex-wrap: wrap; gap: 7px; margin: 0 0 17px; }
.o-field output { margin-left: auto; color: var(--o-menu-muted); font-size: 12px; }
.o-field select { width: 100%; padding: 7px; color: var(--o-menu-ink); background: var(--o-panel); border: 1px solid var(--o-menu-muted); }
.o-field input[type="range"] { width: 100%; accent-color: var(--o-accent); margin: 4px 0; }
.o-check { display: flex; align-items: center; gap: 9px; margin: 13px 0; }
.o-check input { width: 17px; height: 17px; accent-color: var(--o-accent); flex-shrink: 0; }
.o-menu-note { margin: 14px 0 0; color: var(--o-menu-muted); font-size: 12px; line-height: 1.6; }
.o-action { display: inline-flex; justify-content: center; align-items: center; gap: 16px; width: 100%; padding: 10px 13px; border: 1px solid var(--o-accent); background: var(--o-accent); color: var(--o-accent-ink); }
.o-action:hover:not(:disabled) { filter: brightness(1.1); }
.o-secondary { margin-top: 15px; background: transparent; border-color: var(--o-menu-muted); color: var(--o-menu-ink); }
.o-volume { margin: 18px 0 0; }
.o-stripes { height: 5px; flex-shrink: 0; background: linear-gradient(to right, var(--o-bar-1) 0 25%, var(--o-bar-2) 25% 46%, var(--o-bar-3) 46% 64%, var(--o-bar-4) 64% 81%, var(--o-bar-5) 81%); }
.o-color-menu { width: 350px; }
.o-color-help { margin: -4px 0 16px; }
.o-color-adjust { border: 1px solid var(--o-menu-muted); margin: 0; padding: 10px 13px 0; min-width: 0; }
.o-color-adjust legend { padding: 0 5px; font-size: 12px; }
.o-color-adjust .o-field { margin-bottom: 12px; }
.o-color-adjust input[type="range"] { min-height: 24px; }
.o-color-preview { display: flex; gap: 10px; align-items: center; margin: -2px 0 14px; }
#color-swatch { width: 28px; height: 28px; border: 1px solid var(--o-menu-muted); background: var(--o-selected-color); }
#color-selected { font-size: 12px; }
.o-hex-fields { margin-top: 14px; }
.o-hex-fields summary { padding: 7px 0; cursor: pointer; }
.o-hex-fields .o-color-grid { margin-top: 10px; }
#color-contrast { margin-bottom: 6px; }
.o-color-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 11px 14px; }
.o-color-grid label { display: grid; gap: 4px; font-size: 12px; }
.o-color-grid input { width: 100%; min-width: 0; padding: 6px 7px; border: 1px solid var(--o-menu-muted); border-left: 9px solid var(--o-field-color); background: var(--o-panel); color: var(--o-menu-ink); }
.o-color-grid input[aria-invalid="true"] { border-style: dashed; }
.o-color-group { grid-column: 1 / -1; font-size: 11px; color: var(--o-menu-muted); letter-spacing: .1em; margin-top: 4px; }
.o-color-feedback { color: var(--o-menu-ink); font-size: 12px; margin: 12px 0 0; }
.o-color-feedback:empty { display: none; }
.o-session-identity { margin: 0 0 14px; overflow-wrap: anywhere; }
.o-help-menu { width: 345px; line-height: 1.65; }
.o-help-menu p { margin: 0 0 12px; }
.o-help-menu p:not(:first-child) { margin-top: 12px; }
.o-help-menu .o-menu-heading { color: var(--o-menu-ink); font-size: 15px; }
.o-help-menu code { font: inherit; color: var(--o-menu-ink); background: var(--o-title-bg); padding: 1px 4px; }
.o-help-menu > code { display: block; overflow-wrap: anywhere; padding: 5px 7px; margin: 5px 0; }
.o-help-menu a { font-size: 12px; }
.o-screen { flex: 1; min-height: 0; min-width: 0; display: flex; flex-direction: column; position: relative; overflow: hidden; border-radius: 0 0 7px 7px; }
.o-screen::after { content: ""; pointer-events: none; position: absolute; inset: 0; z-index: 8; background: repeating-linear-gradient(to bottom, transparent 0 2px, #050d09 2px 3px); opacity: var(--o-scan); box-shadow: inset 0 0 90px #0006; }
.o-main { flex: 0 1 calc(var(--o-split) * 1%); min-height: 160px; display: flex; flex-direction: column; padding: 18px 25px 12px; overflow: hidden; }
.o-stage-head, .o-stage-foot, .o-terminal-title { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.o-stage-head { color: var(--o-muted); font-size: 11px; letter-spacing: .11em; flex-shrink: 0; }
.o-object-label { color: var(--o-accent); }
.o-visual { flex: 1; min-height: 0; min-width: 0; position: relative; display: grid; place-items: center; margin: 4px 0; overflow: hidden; }
.o-object-frame { width: 100%; height: 100%; min-width: 0; min-height: 0; display: grid; place-items: center; overflow: hidden; }
.o-ascii { padding: 0; margin: 0; font: 12px/11px "Courier New", Courier, monospace; color: var(--o-ascii); white-space: pre; user-select: none; text-shadow: 0 0 7px color-mix(in srgb, var(--o-ascii) 40%, transparent); }
.o-app[data-glow="false"] .o-ascii,
.o-app[data-glow="false"] .o-terminal-emulator .xterm .xterm-screen { text-shadow: none; }
.o-stage-foot { color: var(--o-muted); font-size: 11px; flex-shrink: 0; }
.o-status { display: flex; align-items: center; gap: 8px; max-width: 65%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.o-status::before { content: ""; width: 5px; height: 5px; background: var(--o-bar-5); border-radius: 50%; flex-shrink: 0; }
.o-tiny-button { border: 1px solid var(--o-line); background: transparent; color: var(--o-ink); padding: 4px 9px; font-size: 11px; }
.o-tiny-button:hover { background: var(--o-title-bg); }
.o-divider { flex: 0 0 9px; height: 9px; display: grid; place-items: center; border-block: 1px solid var(--o-line); background: var(--o-bg); color: var(--o-muted); line-height: 4px; cursor: row-resize; touch-action: none; user-select: none; position: relative; z-index: 9; }
.o-divider span { transform: translateY(-2px); letter-spacing: 3px; }
.o-divider:focus-visible { outline-offset: -2px; }
.o-terminal { flex: 1; min-height: 220px; min-width: 0; display: flex; flex-direction: column; background: var(--o-panel); }
.o-terminal-title { flex-shrink: 0; min-height: 42px; padding: 8px 20px; background: var(--o-title-bg); border-bottom: 1px solid var(--o-line); }
.o-terminal-title strong { font-weight: 400; color: var(--o-accent); font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.o-terminal-actions { display: flex; align-items: center; gap: 12px; }
.o-runtime-label { font-size: 10px; letter-spacing: .1em; color: var(--o-muted); white-space: nowrap; }
.o-runtime-label[data-status="ready"] { color: var(--o-bar-5); }
.o-runtime-label[data-status="error"] { color: var(--o-accent); }
.o-terminal-actions button { width: 27px; padding: 2px 5px; font-size: 14px; }
#compact-return-object { display: none; }
.o-terminal-content { min-height: 0; flex: 1; display: flex; flex-direction: column; overflow: hidden; }
.o-boot-panel { display: flex; align-items: center; gap: 30px; padding: 18px 22px; border-bottom: 1px solid var(--o-line); }
.o-boot-copy { flex: 1; }
.o-boot-copy p { margin: 0; color: var(--o-muted); font-size: 12px; line-height: 1.65; }
.o-boot-copy .o-boot-heading { color: var(--o-ink); font-size: 15px; margin-bottom: 4px; }
.o-boot-button { width: auto; min-width: 155px; flex-shrink: 0; }
.o-boot-panel.is-working { padding-block: 9px; gap: 16px; }
.o-boot-panel.is-working .o-boot-heading { display: none; }
.o-boot-panel.is-working .o-boot-button { padding-block: 6px; }
/* FitAddon measures #terminal's full height. Keep its inset outside that box. */
.o-terminal-viewport { min-height: 0; min-width: 0; flex: 1; display: flex; flex-direction: column; overflow: hidden; padding: 12px 17px 6px 20px; }
.o-terminal-emulator { min-height: 0; min-width: 0; flex: 1; overflow: hidden; }
.o-terminal-emulator .xterm { height: 100%; }
.o-terminal-emulator .xterm-helper-textarea { font-size: 16px !important; }
.o-terminal-emulator .xterm-viewport { scrollbar-width: thin; scrollbar-color: var(--o-line) var(--o-panel); }
.o-terminal-emulator .xterm .xterm-screen { text-shadow: 0 0 4px color-mix(in srgb, var(--o-ink) 15%, transparent); }
.o-terminal-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; padding: 8px 20px; border-top: 1px solid var(--o-line); color: var(--o-muted); font-size: 11px; flex-shrink: 0; }
.o-toolbar-label { font-size: 10px; letter-spacing: .07em; margin-right: 5px; }
.o-terminal-toolbar button { border: 1px solid var(--o-line); background: transparent; color: var(--o-ink); padding: 3px 7px; min-width: 29px; }
.o-terminal-toolbar button:hover:not(:disabled) { background: var(--o-title-bg); }
.o-app:not([data-runtime="ready"]) .o-terminal-toolbar { display: none; }
.o-app:not([data-runtime="ready"]) .o-terminal-emulator:empty { display: none; }
.o-toolbar-spacer { flex: 1; }
.o-footer { flex-shrink: 0; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 5px 12px; padding: 8px 20px; border-top: 1px solid var(--o-line); font-size: 10px; color: var(--o-muted); letter-spacing: .06em; }
.o-live { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.o-gallery { width: min(100%, 650px); height: 100%; margin: 0; min-height: 0; display: flex; flex-direction: column; justify-content: center; }
.o-gallery img { display: block; width: 100%; min-height: 0; flex: 1; object-fit: contain; }
/* Smooth downscaling keeps ordered dither dots from aliasing into large checks. */
.o-gallery img[data-treatment="dithered"] { image-rendering: auto; }
.o-gallery img[data-treatment="retro"] { image-rendering: pixelated; }
.o-gallery-caption { display: flex; justify-content: space-between; gap: 12px; color: var(--o-muted); font-size: 11px; padding-top: 7px; }
.o-gallery-caption span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.o-gallery-caption span:not(:first-child) { flex-shrink: 0; }
#gallery-treatment { font-size: 9px; letter-spacing: .05em; align-self: center; }
.o-gallery-navigation { display: flex; justify-content: center; gap: 10px; padding-top: 7px; }
.o-page { height: 100%; min-height: 0; overflow-y: auto; overscroll-behavior: contain; padding: 12px 18px; scrollbar-color: var(--o-muted) var(--o-panel); }
.o-page:focus-visible { outline-offset: -2px; }
.o-app[data-page="true"] .o-object-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.o-maximized .o-main, .o-maximized .o-divider { display: none; }
.o-maximized .o-terminal { min-height: 0; }
.o-noscript { max-width: 900px; margin: 20px auto; color: #f3eee2; }
@media (min-width: 1700px) { .o-app { max-height: 1100px; } }
@media (max-width: 900px) {
  .o-bar { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .o-wordmark { grid-column: 1 / -1; }
  .o-wordmark { padding-inline: 15px; letter-spacing: .15em; }
  .o-wordmark { gap: 8px; }
  .o-top-links { gap: 12px; }
  .o-language select { width: 76px; }
  .o-menu { min-width: 65px; }
  .o-menu summary { padding-inline: 8px; font-size: 12px; }
  .o-menu summary::after { margin-left: 4px; }
  .o-dropdown { font-size: 13px; }
}
@media (max-width: 380px) {
  .o-wordmark .o-brand { font-size: 12px; letter-spacing: .1em; }
  .o-top-links { gap: 9px; }
}
@media (max-width: 680px) {
  :root { --page-gutter: 0px; }
  .o-app { border: 0; border-radius: 0; min-height: 0; padding-top: env(safe-area-inset-top); padding-right: env(safe-area-inset-right); padding-bottom: env(safe-area-inset-bottom); padding-left: env(safe-area-inset-left); }
  .o-bar { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); border-radius: 0; }
  .o-wordmark { grid-column: 1 / -1; padding: 10px 16px; border-radius: 0; font-size: 13px; }
  .o-menu { min-width: 0; width: 100%; }
  .o-menu[data-menu="help"] { border-radius: 0; }
  .o-menu summary { padding: 11px 3px; font-size: clamp(9px, 2.8vw, 11px); min-height: 44px; }
  .o-menu summary::after { display: none; }
  .o-dropdown { position: fixed; top: var(--o-menu-top, 78px); left: 10px !important; right: 10px !important; width: auto; max-height: var(--o-menu-space, calc(100dvh - 94px)); transform: none; }
  .o-color-menu { max-width: 400px; margin-inline: auto; }
  .o-main { min-height: 145px; padding: 13px 13px 9px; }
  .o-stage-head { font-size: 10px; letter-spacing: .05em; }
  .o-stage-foot { gap: 8px; font-size: 10px; }
  .o-stage-foot .o-tiny-button { font-size: 10px; }
  .o-terminal { min-height: 250px; }
  .o-terminal-title { padding: 7px 13px; }
  .o-terminal-title strong { font-size: 12px; }
  .o-terminal-actions { gap: 8px; }
  .o-terminal-viewport { padding: 9px 8px 5px 10px; }
  .o-boot-panel { padding: 13px; gap: 12px; align-items: flex-start; }
  .o-boot-copy .o-boot-heading { font-size: 13px; }
  .o-boot-copy p { font-size: 11px; }
  .o-boot-button { min-width: 112px; padding: 9px; font-size: 12px; gap: 10px; }
  .o-terminal-toolbar { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); padding: 4px 8px; gap: 4px; }
  .o-toolbar-label { display: none; }
  .o-toolbar-spacer { display: none; }
  .o-terminal-toolbar button { font-size: 11px; padding: 4px 3px; min-width: 0; min-height: 44px; }
  .o-footer { padding-inline: 13px; font-size: 9px; letter-spacing: .02em; }
}
/* Let the guest, editor cursor and control keys fit above a software keyboard. */
.o-app[data-compact-input="true"] .o-divider,
.o-app[data-compact-input="true"] .o-wordmark,
.o-app[data-compact-input="true"] .o-footer { display: none; }
.o-app[data-compact-input="true"] .o-terminal { min-height: 0; }
.o-app[data-compact-input="true"] { position: fixed; top: calc(var(--o-viewport-offset, 0px) + var(--page-gutter)); left: var(--page-gutter); right: var(--page-gutter); width: auto; max-width: none; z-index: 30; }
.o-condensed-display .o-main { display: flex; position: absolute; top: 3px; right: 56px; width: 96px; height: 42px; min-height: 0; padding: 0; z-index: 2; pointer-events: none; }
.o-condensed-display .o-visual { margin: 0; height: 100%; width: 100%; }
.o-condensed-display .o-stage-head,
.o-condensed-display .o-stage-foot,
.o-condensed-display .o-gallery-caption,
.o-condensed-display .o-gallery-navigation { display: none; }
.o-condensed-display .o-ascii { font-size: 5px; line-height: 4px; }
.o-condensed-display .o-terminal-title { min-height: 48px; padding-block: 2px; }
.o-condensed-display .o-terminal-actions button { display: inline-grid; place-items: center; width: 44px; height: 44px; min-width: 44px; padding: 0; }
.o-condensed-display #compact-return-object { display: none; }
.o-condensed-display[data-gallery="true"] #compact-return-object { display: inline-grid; }
.o-condensed-display:not(.o-maximized) .o-terminal-title { position: relative; padding-right: 156px; }
.o-condensed-display:not(.o-maximized) .o-terminal-actions { position: absolute; right: 4px; top: 2px; gap: 4px; }
.o-condensed-display[data-gallery="true"] .o-main { right: 104px; }
.o-condensed-display[data-gallery="true"]:not(.o-maximized) .o-terminal-title { padding-right: 208px; }
.o-condensed-display:not(.o-maximized) .o-runtime-label { display: none; }
.o-condensed-display:not([data-runtime="ready"]) .o-main,
.o-app.o-maximized .o-main { display: none; }
@media (max-width: 900px) {
  .o-app { padding-top: env(safe-area-inset-top); padding-right: env(safe-area-inset-right); padding-bottom: env(safe-area-inset-bottom); padding-left: env(safe-area-inset-left); }
}
@media (max-height: 600px) {
  .o-main { min-height: 100px; padding-block: 8px; }
  .o-terminal { min-height: 0; }
}
@media (max-height: 560px) {
  .o-main, .o-divider { display: none; }
}
/* Reading needs a full panel even while the software keyboard condenses the ASCII display. */
.o-app[data-page="true"]:not(.o-maximized) .o-main {
  display: flex; position: relative; top: auto; right: auto; width: auto;
  height: auto; flex: 0 1 calc(var(--o-split) * 1%); min-height: 120px;
  padding: 10px 14px; pointer-events: auto;
}
.o-app[data-page="true"] .o-visual { height: auto; }
.o-app[data-page="true"] .o-stage-head, .o-app[data-page="true"] .o-stage-foot { display: flex; }
.o-app[data-page="true"] .o-stage-head { min-height: 20px; }
@media (pointer: coarse) {
  .o-portfolio-link { min-width: 44px; min-height: 44px; }
  .o-language select { min-height: 44px; width: 100px; font-size: 16px; }
  .o-menu summary, .o-action, .o-dropdown select, .o-color-grid input { min-height: 44px; }
  .o-color-adjust input[type="range"] { min-height: 44px; }
  .o-color-grid input, .o-dropdown select { font-size: 16px; }
  .o-terminal-toolbar button { min-width: 44px; min-height: 44px; }
  .o-tiny-button { min-height: 44px; }
  .o-terminal-actions button { min-width: 44px; }
  .o-divider { flex-basis: 14px; }
  .o-dropdown .o-check { min-height: 44px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; }
}
@media (pointer: coarse) and (max-width: 380px) {
  .o-language select { width: 90px; }
  .o-top-links { gap: 6px; }
}