:root {
  color-scheme: dark;
  --bg: #0a0f1d; --surface: #111a2e; --surface-2: #16223b; --line: rgba(124, 200, 255, .14);
  --text: #e8eefb; --muted: #9fb0d0; --accent: #3b9bff; --accent-2: #7cc8ff;
  --primary: #2f6fdb;          /* fills under white text: #3b9bff would miss AA */
  --rec: #e5484d; --rec-strong: #d4363f; --tap: #ffd400;
  --radius: 16px; --shadow: 0 10px 30px rgba(0, 0, 0, .35); --lift: inset 0 1px 0 rgba(255, 255, 255, .04);
  --space-section: clamp(56px, 8vw, 104px);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "Cascadia Mono", Consolas, Menlo, monospace;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--text); font: 17px/1.6 var(--font); overflow-wrap: anywhere; }
main { overflow-x: clip; }
a { color: var(--accent-2); }
a:hover { color: var(--text); }
:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 3px; border-radius: 6px; }
img, video, svg { max-width: 100%; height: auto; display: block; }
h1, h2, h3 { letter-spacing: -.02em; line-height: 1.15; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 20px; }
.doc { max-width: 780px; }
code { background: rgba(124, 200, 255, .12); color: var(--accent-2); padding: 1px 7px; border-radius: 6px; font: 600 .84em/1.5 var(--mono); }
.ico { width: 24px; height: 24px; flex: none; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--lift); }

/* header, language switcher */
.top { border-bottom: 1px solid var(--line); background: rgba(10, 15, 29, .8); -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px); position: sticky; top: 0; z-index: 10; }
.top .wrap { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 22px; padding-top: 12px; padding-bottom: 12px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 19px; color: var(--text); text-decoration: none; margin-right: auto; letter-spacing: -.01em; }
.brand img { width: 34px; height: 34px; border-radius: 8px; }
.top nav { display: flex; flex-wrap: wrap; gap: 4px 18px; font-size: 15px; }
.top nav a { color: var(--muted); text-decoration: none; padding: 6px 0; }
.top nav a:hover, .top nav a[aria-current] { color: var(--text); }
.langs { position: relative; font-size: 15px; }
.langs summary { cursor: pointer; color: var(--accent-2); list-style: none; padding: 5px 10px; display: flex; align-items: center; gap: 6px; border: 1px solid var(--line); border-radius: 999px; }
.langs summary:hover { background: var(--surface); }
.langs .globe { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 1.6; }
.langs .code { font-size: 13px; font-weight: 700; letter-spacing: .05em; }
.langs summary::-webkit-details-marker { display: none; }
.langs summary::after { content: " ▾"; }
.langs ul { position: absolute; right: 0; top: 100%; margin: 8px 0 0; padding: 6px; list-style: none; background: var(--surface); border: 1px solid var(--line); border-radius: 14px; min-width: 190px; box-shadow: var(--shadow), var(--lift); }
.langs li a { display: flex; align-items: center; gap: 12px; padding: 8px 12px; color: var(--text); text-decoration: none; border-radius: 9px; }
.langs li .code { color: var(--muted); width: 22px; font-size: 12px; }
.langs li a[aria-current] { color: var(--accent-2); }
.langs li a:hover { background: var(--surface-2); }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

/* hero */
.hero::before { content: ""; position: absolute; inset: -120px 0 auto; height: 760px; background: radial-gradient(ellipse 60% 55% at 72% 45%, rgba(59, 155, 255, .16), transparent 70%); pointer-events: none; z-index: -1; }
.hero { position: relative; isolation: isolate; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 56px; align-items: center; padding-top: 72px; padding-bottom: 40px; }
.hero h1 { font-size: 56px; line-height: 1.05; margin: 0 0 8px; }
.hero .tagline { font-size: 25px; line-height: 1.3; color: var(--accent-2); margin: 0 0 20px; font-weight: 600; letter-spacing: -.01em; }
.hero .lead { font-size: 19px; margin: 0 0 28px; max-width: 34em; }
.shot { position: relative; isolation: isolate; }
.shot::before { content: ""; position: absolute; left: 50%; top: 50%; width: 145%; aspect-ratio: 1; transform: translate(-50%, -50%); background: url(img/ui/bg-rings.svg) center / contain no-repeat; opacity: .9; z-index: -1; pointer-events: none; }
.shot img { border-radius: 14px; border: 1px solid rgba(124, 200, 255, .3); box-shadow: var(--shadow), 0 0 120px rgba(59, 155, 255, .35); }
.pills { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 22px 0 0; padding: 0; }
.pills li { display: inline-flex; align-items: center; gap: 6px; padding: 4px 12px 4px 8px; border: 1px solid var(--line); border-radius: 999px; background: rgba(124, 200, 255, .06); color: var(--muted); font-size: 14px; line-height: 1.4; }
.pills .ico { width: 16px; height: 16px; color: var(--accent-2); }
.badges { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.badges a { display: block; line-height: 0; }
.badges img { height: 48px; width: auto; }
.badges a.windows { display: flex; align-items: center; gap: 7px; height: 48px; padding: 0 13px 0 9px; border: 1px solid #a6a6a6; border-radius: 8px; background: #000; color: #fff; text-decoration: none; line-height: 1.1; }
.badges a.windows:hover { border-color: #fff; }
.badges a.windows .pc { width: 24px; height: 24px; flex: none; fill: none; stroke: #fff; stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round; }
.badges a.windows small { display: block; font-size: 9px; font-weight: 600; letter-spacing: .06em; color: #d0d0d0; }
.badges a.windows strong { display: block; font-size: 18px; font-weight: 600; white-space: nowrap; }

/* sections */
section { padding: var(--space-section) 0; }
.band { background: linear-gradient(180deg, #131e37, #0c1325); border-top: 1px solid rgba(124, 200, 255, .12); border-bottom: 1px solid rgba(124, 200, 255, .08); }
/* the Windows download only shows once its button (or the FAQ link) points the URL at #windows — no script */
#windows:not(:target) { display: none; }
#windows { scroll-margin-top: 112px; }   /* clears the sticky header, which wraps to ~105 px on a phone */
section h2 { font-size: clamp(28px, 3.4vw, 36px); margin: 0 0 16px; }
section h2::before { content: ""; display: block; width: 44px; height: 4px; border-radius: 2px; margin-bottom: 18px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); }
.feedback h2::before, .cta-panel h2::before, .privacy h2::before { display: none; }
section .intro { color: var(--muted); font-size: 18px; margin: 0 0 32px; max-width: 65ch; }

/* tap: animation + the REC ⇄ FROZEN loop */
.tap-demo { max-width: 760px; margin: 0 auto; }
.tap-layout { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(0, 1fr); gap: 40px; align-items: center; }
.cycle { display: grid; gap: 4px; }
.state { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--lift); padding: 16px 18px; }
.state.rec { border-left: 4px solid var(--rec); background: linear-gradient(90deg, rgba(229, 72, 77, .10), var(--surface) 45%); }
.state.frozen { border-left: 4px solid var(--accent); background: linear-gradient(90deg, rgba(59, 155, 255, .12), var(--surface) 45%); }
.state .head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.state .chip { color: #fff; font-weight: 700; font-size: 14px; letter-spacing: .04em; padding: 3px 10px; border-radius: 7px; }
.state .bar { flex: 1; height: 6px; border-radius: 3px; }
.state.rec .chip { background: var(--rec-strong); }
.state.rec .bar { background: var(--rec); }
.state.frozen .chip { background: var(--primary); }
.state.frozen .bar { background: var(--accent); }
.state p { margin: 0; color: var(--muted); font-size: 16px; line-height: 1.5; }
.turn { display: flex; align-items: center; justify-content: center; gap: 10px; color: var(--muted); font-size: 14px; min-height: 44px; }
.turn .glyph { font-size: 22px; line-height: 1; color: var(--text); }
.ripple { width: 44px; height: 44px; flex: none; overflow: visible; }
.ripple .r { fill: none; stroke: var(--tap); stroke-width: 2.5; transform-box: view-box; transform-origin: 32px 32px; animation: gp-ripple 1.8s ease-out infinite; }
.ripple .r2 { animation-delay: .6s; }
.ripple .r3 { animation-delay: 1.2s; }
.ripple .dot { fill: var(--tap); }
@keyframes gp-ripple { 0% { transform: scale(.35); opacity: .95; } 100% { transform: scale(1); opacity: 0; } }

/* modes */
.modes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; }
.mode { overflow: hidden; display: flex; flex-direction: column; border-top: 2px solid var(--accent); }
.mode .art { width: 100%; aspect-ratio: 360 / 220; background: radial-gradient(ellipse at 50% 60%, rgba(59, 155, 255, .10), transparent 70%); border-bottom: 1px solid var(--line); }
.mode-text { padding: 18px 22px 22px; text-align: center; }
.mode h3 { margin: 0 0 6px; font-size: 18px; color: var(--accent-2); letter-spacing: .02em; }
.mode p { margin: 0; color: var(--muted); }
.multi { margin-top: 48px; }
.multi-art { width: 100%; max-width: 960px; margin: 0 auto 28px; }
.highlights { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px 40px; }
.hl { display: flex; align-items: flex-start; gap: 16px; }
.hl-ico { width: 26px; height: 26px; padding: 11px; box-sizing: content-box; color: var(--accent-2); background: rgba(124, 200, 255, .1); border: 1px solid var(--line); border-radius: 14px; }
.hl p { margin: 0; color: var(--muted); }
.hl strong { color: var(--text); font-size: 18px; }

/* quick start */
.qs-panel { background: var(--surface); border: 1px solid var(--line); border-top: 2px solid var(--accent); border-radius: 20px; box-shadow: var(--lift), var(--shadow); overflow: hidden; margin-bottom: 20px; }
.qs-art { width: 100%; max-width: 760px; margin: 0 auto; padding: 20px 20px 0; box-sizing: border-box; }
.quickstart { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); border-top: 1px solid var(--line); }
.qs-panel .qs { padding: 24px 28px; background: none; border: 0; border-radius: 0; box-shadow: none; }
.qs-panel .qs + .qs { border-left: 1px solid var(--line); }
.qs h3 { display: flex; align-items: center; gap: 12px; margin: 0 0 16px; font-size: 20px; }
.qs .letter { width: 34px; height: 34px; flex: none; display: grid; place-items: center; border-radius: 50%; background: var(--accent); color: var(--bg); font-size: 17px; font-weight: 800; letter-spacing: 0; }
.qs ol { margin: 0; padding: 0; list-style: none; counter-reset: qs; display: grid; gap: 12px; }
.qs li { display: flex; align-items: center; gap: 12px; counter-increment: qs; }
.qs li::before { content: counter(qs); width: 26px; height: 26px; flex: none; display: grid; place-items: center; border-radius: 50%; border: 1px solid var(--line); background: rgba(124, 200, 255, .08); color: var(--accent-2); font-size: 13px; font-weight: 700; }

/* privacy */
.privacy { background: linear-gradient(135deg, var(--surface-2), var(--surface)); border: 1px solid var(--line); border-radius: 20px; box-shadow: var(--lift); padding: 36px 40px; }
.privacy h2 { margin-bottom: 24px; }
.privacy ul { list-style: none; margin: 0 0 24px; padding: 0; display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px 40px; }
.privacy li { display: flex; align-items: flex-start; gap: 14px; }
.privacy li .ico { color: var(--accent-2); margin-top: 1px; }
.privacy p { margin: 0; color: var(--muted); }

/* media */
.media { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 20px; }
.media figure { margin: 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.media figcaption { padding: 10px 14px; color: var(--muted); font-size: 15px; }

/* buttons, Windows */
.button { display: inline-block; background: linear-gradient(180deg, var(--primary), #2259c4); color: #fff; text-decoration: none; padding: 12px 22px; border-radius: 10px; font-weight: 600; box-shadow: var(--lift); }
.button:hover { color: #fff; background: #2259c4; }
.with-icon { display: flex; align-items: center; gap: 14px; }
.head-ico { width: 34px; height: 34px; color: var(--accent-2); }
.info { border-left: 3px solid var(--accent); background: var(--surface); border-radius: 0 12px 12px 0; padding: 12px 18px; margin: 0 0 20px; max-width: 65ch; }
.hints { margin: 0; padding-left: 18px; color: var(--muted); font-size: 15px; }
.hints li { margin: 4px 0; }
.facts { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 6px 18px; font-size: 15px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; padding: 14px 18px; max-width: 65ch; }
.facts dt { color: var(--muted); }
.facts dd { margin: 0; }
.hash { display: flex; align-items: flex-start; gap: 10px; }
.hash code { background: none; color: var(--text); padding: 0; font-weight: 400; font-size: 13px; overflow-wrap: anywhere; }
.copy { flex: none; width: 32px; height: 32px; padding: 0; display: grid; place-items: center; border-radius: 8px; border: 1px solid var(--line); background: var(--surface-2); color: var(--accent-2); cursor: pointer; }
.copy[hidden] { display: none; }
.copy .ico { width: 18px; height: 18px; }
.copy .ico + .ico, .copy.done .ico:first-child { display: none; }
.copy.done .ico + .ico { display: block; }
.muted { color: var(--muted); }

/* feedback, download */
.feedback { display: grid; grid-template-columns: auto minmax(0, 1fr) auto; gap: 16px 28px; align-items: center; padding: 30px 34px; }
.feedback h2 { margin-bottom: 8px; }
.feedback p { margin: 0; color: var(--muted); max-width: 65ch; }
.feedback .button { white-space: nowrap; }
.fb-ico { width: 30px; height: 30px; padding: 12px; box-sizing: content-box; color: var(--tap); background: rgba(255, 212, 0, .08); border: 1px solid rgba(255, 212, 0, .2); border-radius: 16px; align-self: start; }
.cta-panel { text-align: center; padding: 64px 24px 68px; border-radius: 24px; background: url(img/ui/bg-rings.svg) center / 640px no-repeat, linear-gradient(160deg, var(--surface), var(--surface-2)); border: 1px solid var(--line); box-shadow: var(--lift), 0 0 0 1px rgba(124, 200, 255, .05), 0 0 70px rgba(59, 155, 255, .14); }
.cta-panel h2 { margin-bottom: 24px; }
.cta .badges { justify-content: center; }

/* text pages */
main.doc { padding-bottom: 56px; }
.doc h1 { font-size: 34px; margin: 40px 0 10px; }
.doc h2 { font-size: 24px; margin: 40px 0 8px; }
.doc h3 { font-size: 19px; margin: 28px 0 6px; }
.doc section.qa { padding: 18px 22px; margin: 14px 0; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--lift); }
.doc .qa h2 { font-size: 20px; margin: 0 0 6px; }
.doc .qa p { margin: 0; color: #cfd9ec; }
pre { background: var(--surface-2); padding: 12px; border-radius: 10px; overflow-x: auto; }
pre code { padding: 0; background: none; color: inherit; font-weight: 400; }
table { border-collapse: collapse; width: 100%; margin: 12px 0; display: block; overflow-x: auto; }
th, td { border: 1px solid var(--line); padding: 6px 10px; text-align: left; vertical-align: top; overflow-wrap: normal; }
blockquote { margin: 12px 0; padding: 4px 14px; border-left: 3px solid var(--accent); color: var(--muted); }

/* footer */
.bottom { border-top: 1px solid var(--line); color: var(--muted); font-size: 14px; line-height: 1.8; }
.bottom .wrap { padding-top: 28px; padding-bottom: 44px; }
.bottom p { margin: 0 0 10px; }
.bottom a { color: var(--muted); text-decoration-color: rgba(159, 176, 208, .35); text-underline-offset: 3px; }
.bottom a:hover { color: var(--text); text-decoration-color: currentColor; }
.bottom .legal { font-size: 12px; line-height: 1.7; opacity: .85; }

@media (max-width: 880px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 36px; padding-top: 40px; }
  .hero h1 { font-size: 42px; }
  .hero .tagline { font-size: 21px; }
  .shot::before { width: 100%; opacity: .5; }
  .modes, .quickstart, .tap-layout, .highlights { grid-template-columns: minmax(0, 1fr); }
  .qs-panel .qs + .qs { border-left: 0; border-top: 1px solid var(--line); }
  .qs-art { padding: 14px 10px 0; }
  .tap-layout { gap: 24px; }
  .modes { gap: 14px; }
  .mode { display: grid; grid-template-columns: minmax(0, 42%) minmax(0, 1fr); align-items: center; }
  .mode .art { border-bottom: 0; border-right: 1px solid var(--line); height: 100%; object-fit: contain; }
  .mode-text { text-align: left; padding: 14px 16px; }
  .mode h3 { font-size: 16px; }
  .mode p { font-size: 15px; line-height: 1.45; }
  .multi { margin-top: 36px; }
  .privacy { padding: 26px 22px; }
  .privacy ul { grid-template-columns: minmax(0, 1fr); }
  .feedback { grid-template-columns: minmax(0, 1fr); padding: 24px 22px; }
  .fb-ico { width: 24px; height: 24px; padding: 9px; border-radius: 12px; }
  .cta-panel { padding: 40px 18px 44px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .ripple .r { animation: none; opacity: .5; }
  .ripple .r2, .ripple .r3 { display: none; }
}

/* tap animation (generated by scripts/site_svg.py) */
.tap-demo { margin: 0; }
.tap-demo svg { width: 100%; height: auto; display: block; }
.tap-demo .phone { fill: #16223b; stroke: #2f4170; stroke-width: 2; }
.tap-demo .screen { fill: #05070d; }
.tap-demo .gym { stroke: #3a4a6e; stroke-width: 4; fill: none; stroke-linecap: round; }
.tap-demo .cable { stroke: #26324f; stroke-width: 2; fill: none; }
.tap-demo .bar { fill: #c9d3e6; stroke: #05070d; stroke-width: 2; }
.tap-demo .dock { fill: #111a2e; opacity: .92; }
.tap-demo .gymnast { stroke: #e9edf5; stroke-linecap: round; fill: none; }
.tap-demo .gymnast .arms { stroke-width: 6; }
.tap-demo .gymnast .torso { stroke-width: 12; }
.tap-demo .gymnast .legs { stroke-width: 8; }
.tap-demo .gymnast circle { fill: #e9edf5; stroke: #05070d; stroke-width: 2; }
.tap-demo .chip text, .tap-demo .lbl { font: 600 15px system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; fill: #fff; }
.tap-demo .lbl.muted { fill: #9aa6bd; font-weight: 500; }
.tap-demo .info { font: 500 14px system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif; fill: #9aa6bd; }
.tap-demo .track { fill: #24314d; }
.tap-demo .rec-bar { fill: var(--rec); transform-box: fill-box; transform-origin: left center; }
.tap-demo .frozen-seg { fill: var(--primary); }
.tap-demo .frames { fill: url(#gp-frames); }
.tap-demo .slider-line { stroke: #3a4a6e; stroke-width: 6; stroke-linecap: round; }
.tap-demo .slider-fill { fill: var(--primary); transform-box: fill-box; transform-origin: left center; }
.tap-demo .handle { fill: var(--primary); stroke: #fff; stroke-width: 3; }
.tap-demo .ring { fill: none; stroke: #fff; stroke-width: 3; }
.tap-demo .finger { fill: #fff; }
@keyframes gp-swing { 0% { transform: rotate(180deg); animation-timing-function: ease-out; } 10% { transform: rotate(360deg); animation-timing-function: ease-in; } 20% { transform: rotate(540deg); animation-timing-function: ease-out; } 30% { transform: rotate(720deg); } 36% { transform: rotate(720deg); animation-timing-function: steps(18, end); } 62% { transform: rotate(630deg); } 75% { transform: rotate(630deg); } 75.01% { transform: rotate(450deg); animation-timing-function: ease-in; } 80% { transform: rotate(540deg); animation-timing-function: ease-out; } 90% { transform: rotate(720deg); animation-timing-function: ease-in; } 100% { transform: rotate(900deg); animation-timing-function: ease-out; } }
.tap-anim .swing { animation: gp-swing 8.0s linear infinite; transform-box: view-box; transform-origin: 320px 150px; }
@keyframes gp-live { 0.000% { opacity: 1; } 30.000% { opacity: 0; } 75.000% { opacity: 1; } 100.000% { opacity: 0; } }
@keyframes gp-frozen { 0.000% { opacity: 0; } 30.000% { opacity: 1; } 75.000% { opacity: 0; } 100.000% { opacity: 0; } }
.tap-anim .when-live { animation: gp-live 8.0s step-end infinite; }
.tap-anim .when-frozen { animation: gp-frozen 8.0s step-end infinite; }
@keyframes gp-rec { from { transform: scaleX(0); } to { transform: scaleX(1); } }
.tap-anim .rec-bar { animation: gp-rec 8.0s linear infinite; }
@keyframes gp-handle { 0% { transform: translateX(0); } 36.0% { transform: translateX(0); animation-timing-function: steps(18, end); } 62.0%, 100% { transform: translateX(-90px); } }
.tap-anim .handle-move { animation: gp-handle 8.0s linear infinite; }
@keyframes gp-fill { 0% { transform: scaleX(1); } 36.0% { transform: scaleX(1); animation-timing-function: steps(18, end); } 62.0%, 100% { transform: scaleX(0.7353); } }
.tap-anim .slider-fill { animation: gp-fill 8.0s linear infinite; }
@keyframes gp-tap { 0%, 26.0% { opacity: 0; transform: scale(.6); } 29.0% { opacity: 1; transform: scale(1); } 34.0% { opacity: 0; transform: scale(1.5); } 71.0% { opacity: 0; transform: scale(.6); } 74.0% { opacity: 1; transform: scale(1); } 79.0%, 100% { opacity: 0; transform: scale(1.5); } }
.tap-anim .tap { animation: gp-tap 8.0s ease-out infinite; transform-box: fill-box; transform-origin: center; }
.tap-static { display: none; }
.tap-static .states { display: grid; grid-template-columns: 1fr auto 1fr auto 1fr; gap: 10px; align-items: center; }
.tap-static figure { margin: 0; }
.tap-static .arrow { color: var(--muted); font-size: 28px; }
.tap-static figcaption { text-align: center; color: var(--muted); font-size: 14px; }
@media (prefers-reduced-motion: reduce) {
  .tap-demo .tap-anim { display: none; }
  .tap-demo .tap-static { display: block; }
}
/* the track is 560 px wide in the viewBox; the frozen segment marks what was recorded before the tap */