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Clear the reveal transform so the mobile downloads sheet anchors to the viewport #11

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Merged
skvggor merged 2 commits into from
Jul 16, 2026
Merged

Clear the reveal transform so the mobile downloads sheet anchors to the viewport #11

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b1dcb57
Clear the reveal transform so the mobile downloads sheet anchors to t…
skvggor Jul 15, 2026
86bc87e
Add gyroscope parallax and a constructivist brush cursor
skvggor Jul 16, 2026
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75 changes: 55 additions & 20 deletions web/css/style.css
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Original file line number Diff line number Diff line change
Expand Up @@ -132,8 +132,11 @@ a {
the engine's pattern: overlapping upper semicircles in three concentric radii,
rows offset by half a period. */
.ground {
/* Bleeds past the viewport so the parallax drift never exposes an edge. */
inset: -16px;
background: var(--tint);
opacity: 0.05;
will-change: transform;
mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cpath fill='none' stroke='white' stroke-width='2' d='M-120,0%20A60,60%200%200%200%200,0%20M-100,0%20A40,40%200%200%200%20-20,0%20M-80,0%20A20,20%200%200%200%20-40,0%20M0,0%20A60,60%200%200%200%20120,0%20M20,0%20A40,40%200%200%200%20100,0%20M40,0%20A20,20%200%200%200%2080,0%20M120,0%20A60,60%200%200%200%20240,0%20M140,0%20A40,40%200%200%200%20220,0%20M160,0%20A20,20%200%200%200%20200,0%20M-60,60%20A60,60%200%200%200%2060,60%20M-40,60%20A40,40%200%200%200%2040,60%20M-20,60%20A20,20%200%200%200%2020,60%20M60,60%20A60,60%200%200%200%20180,60%20M80,60%20A40,40%200%200%200%20160,60%20M100,60%20A20,20%200%200%200%20140,60%20M-120,120%20A60,60%200%200%200%200,120%20M-100,120%20A40,40%200%200%200%20-20,120%20M-80,120%20A20,20%200%200%200%20-40,120%20M0,120%20A60,60%200%200%200%20120,120%20M20,120%20A40,40%200%200%200%20100,120%20M40,120%20A20,20%200%200%200%2080,120%20M120,120%20A60,60%200%200%200%20240,120%20M140,120%20A40,40%200%200%200%20220,120%20M160,120%20A20,20%200%200%200%20200,120'/%3E%3C/svg%3E");
mask-repeat: repeat;
-webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cpath fill='none' stroke='white' stroke-width='2' d='M-120,0%20A60,60%200%200%200%200,0%20M-100,0%20A40,40%200%200%200%20-20,0%20M-80,0%20A20,20%200%200%200%20-40,0%20M0,0%20A60,60%200%200%200%20120,0%20M20,0%20A40,40%200%200%200%20100,0%20M40,0%20A20,20%200%200%200%2080,0%20M120,0%20A60,60%200%200%200%20240,0%20M140,0%20A40,40%200%200%200%20220,0%20M160,0%20A20,20%200%200%200%20200,0%20M-60,60%20A60,60%200%200%200%2060,60%20M-40,60%20A40,40%200%200%200%2040,60%20M-20,60%20A20,20%200%200%200%2020,60%20M60,60%20A60,60%200%200%200%20180,60%20M80,60%20A40,40%200%200%200%20160,60%20M100,60%20A20,20%200%200%200%20140,60%20M-120,120%20A60,60%200%200%200%200,120%20M-100,120%20A40,40%200%200%200%20-20,120%20M-80,120%20A20,20%200%200%200%20-40,120%20M0,120%20A60,60%200%200%200%20120,120%20M20,120%20A40,40%200%200%200%20100,120%20M40,120%20A20,20%200%200%200%2080,120%20M120,120%20A60,60%200%200%200%20240,120%20M140,120%20A40,40%200%200%200%20220,120%20M160,120%20A20,20%200%200%200%20200,120'/%3E%3C/svg%3E");
Expand Down Expand Up @@ -506,10 +509,12 @@ a {
color: var(--tint);
}

/* Anchored to the viewport, never to the (animated) wrap. */
.downloads {
position: absolute;
bottom: calc(100% + 0.6rem);
right: 0;
position: fixed;
z-index: 6;
right: var(--margin);
bottom: calc(var(--margin) + 4.6rem);
width: 19.5rem;
display: grid;
gap: 0.15rem;
Expand Down Expand Up @@ -670,34 +675,63 @@ a {
bottom: calc(var(--margin) - 0.15rem);
}

/* ---- Cursor follower: a hanko dot trailing the pointer ---- */
.follower {
/* ---- The brush cursor: a registration ring, a vermilion stroke that trails
the hand, and hanko stamps on every press. JS adds `cursor-live` only on
fine pointers with motion allowed, replacing the native arrow. ---- */
.cursor-live,
.cursor-live * {
cursor: none;
}

.cursor {
position: fixed;
z-index: 90;
z-index: 100;
top: 0;
left: 0;
width: 26px;
height: 26px;
margin: -13px 0 0 -13px;
border: 1.5px solid var(--vermilion);
border-radius: 50%;
opacity: 0;
pointer-events: none;
will-change: transform;
}
.follower::before {
content: "";
.cursor__ring {
position: absolute;
top: 50%;
left: 50%;
width: 4px;
height: 4px;
margin: -2px 0 0 -2px;
width: 30px;
height: 30px;
margin: -15px 0 0 -15px;
border: 1.5px solid var(--vermilion);
border-radius: 50%;
}
.cursor__bar {
position: absolute;
width: 16px;
height: 3px;
margin: -1.5px 0 0 -8px;
background: var(--vermilion);
opacity: 0;
}

/* The house seal, pressed wherever the visitor presses. */
.stamp {
position: fixed;
z-index: 99;
top: 0;
left: 0;
width: 1.6rem;
height: 1.6rem;
margin: -0.8rem 0 0 -0.8rem;
display: grid;
place-items: center;
background: var(--vermilion);
color: var(--paper);
font-family: var(--display);
font-weight: 900;
font-size: 0.9rem;
line-height: 1;
border-radius: 3px;
pointer-events: none;
}

@media not (pointer: fine) {
.follower {
.cursor {
display: none;
}
}
Expand Down Expand Up @@ -812,7 +846,8 @@ a {
.omakase:active .omakase__seal::after {
animation: none;
}
.follower {
.cursor,
.stamp {
display: none;
}
}
17 changes: 12 additions & 5 deletions web/index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -75,7 +75,7 @@
<a class="skip-link" href="#source">Skip to source</a>

<!-- The sheet: a faint wagara ground and film grain, tinted by the current theme. -->
<div class="ground" aria-hidden="true"></div>
<div class="ground" id="ground" aria-hidden="true"></div>
<div class="grain" aria-hidden="true"></div>

<!-- Real heading for assistive tech; the plate draws the visible one. -->
Expand Down Expand Up @@ -156,7 +156,10 @@ <h1 class="visually-hidden">
<button id="download-toggle" class="download-toggle" type="button" aria-expanded="false" aria-controls="downloads">
↓ Downloads
</button>
<div id="downloads" class="downloads" hidden>
</div>
<!-- Kept outside the (animated) wrap: a leftover transform there would
become this fixed panel's containing block and clip it. -->
<div id="downloads" class="downloads" hidden>
<button class="downloads__close" id="downloads-close" type="button">× close</button>
<p class="download__note">Desktop builds only — Linux and Windows. Grab them on a computer.</p>
<a class="download" data-platform="linux-appimage" href="https://github.com/skvggor/acag/releases/latest">
Expand Down Expand Up @@ -186,15 +189,19 @@ <h1 class="visually-hidden">
<span class="download__os">Linux</span>
<span class="download__format">tarball</span>
</a>
<a class="download download--minor download--all" href="https://github.com/skvggor/acag/releases">All releases →</a>
</div>
<a class="download download--minor download--all" href="https://github.com/skvggor/acag/releases">All releases →</a>
</div>

<a id="source" class="source" href="https://github.com/skvggor/acag">
Read the source, build it yourself
</a>

<div class="follower" id="follower" aria-hidden="true"></div>
<!-- The brush cursor: a registration ring whose vermilion stroke trails the
hand's motion; every press stamps the sheet with the house seal. -->
<div class="cursor" id="cursor" aria-hidden="true">
<span class="cursor__ring"></span>
<span class="cursor__bar"></span>
</div>

<p class="edge edge--bottom" aria-hidden="true">Rendered live · Rust → WebAssembly</p>

Expand Down
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