/* Proximity Rules — the site's stylesheet.
   Lifted out of index.html when the privacy policy was given a URL of its own:
   two pages sharing one file beats two copies drifting apart, and the second
   page then costs no CSS at all. */
/* ------------------------------------------------------------------ tokens
   Dark first: the app is dark-only because it is used in bright sun and at
   night, and the site carries the same world. The light theme is the other
   half of the product — the record sheet, printed, on a supervisor's desk. */
:root {
  --ground:      #06080B;
  --ground-2:    #0C1016;
  --panel:       #11171F;
  --panel-2:     #161E28;
  --line:        #202A37;
  --line-soft:   #172029;

  --text:        #F3F7FC;
  --text-dim:    #8B9BAF;
  --text-faint:  #5C6B7E;

  --hivis:       #FFC300;
  --hivis-2:     #FFD84D;
  --on-hivis:    #06080B;

  --pass:        #A6E22E;
  --fail:        #FF4D5E;
  --measure:     #35D6F0;

  --pass-wash:   rgba(166, 226, 46, .13);
  --fail-wash:   rgba(255, 77, 94, .12);
  --hivis-wash:  rgba(255, 195, 0, .10);

  --grid:        rgba(139, 155, 175, .085);
  --grid-major:  rgba(139, 155, 175, .16);
  --shadow:      0 24px 60px -30px rgba(0, 0, 0, .9);

  --ff-display: "Archivo", "Arial Narrow", Helvetica, sans-serif;
  --ff-body:    "Public Sans", "Segoe UI", Helvetica, Arial, sans-serif;
  --ff-mono:    "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --ground:      #E9EDF2;
    --ground-2:    #F4F7FA;
    --panel:       #FFFFFF;
    --panel-2:     #F4F7FA;
    --line:        #C3CDD9;
    --line-soft:   #DCE3EB;

    --text:        #0B1017;
    --text-dim:    #4C5A6B;
    --text-faint:  #7A8798;

    --hivis:       #B87E00;
    --hivis-2:     #8A6A00;
    --on-hivis:    #FFFFFF;

    --pass:        #4C7A00;
    --fail:        #C31229;
    --measure:     #00697E;

    --pass-wash:   rgba(76, 122, 0, .12);
    --fail-wash:   rgba(195, 18, 41, .09);
    --hivis-wash:  rgba(184, 126, 0, .10);

    --grid:        rgba(11, 16, 23, .06);
    --grid-major:  rgba(11, 16, 23, .12);
    --shadow:      0 20px 50px -32px rgba(11, 16, 23, .45);
  }
}

:root[data-theme="light"] {
  --ground:      #E9EDF2;
  --ground-2:    #F4F7FA;
  --panel:       #FFFFFF;
  --panel-2:     #F4F7FA;
  --line:        #C3CDD9;
  --line-soft:   #DCE3EB;

  --text:        #0B1017;
  --text-dim:    #4C5A6B;
  --text-faint:  #7A8798;

  --hivis:       #B87E00;
  --hivis-2:     #8A6A00;
  --on-hivis:    #FFFFFF;

  --pass:        #4C7A00;
  --fail:        #C31229;
  --measure:     #00697E;

  --pass-wash:   rgba(76, 122, 0, .12);
  --fail-wash:   rgba(195, 18, 41, .09);
  --hivis-wash:  rgba(184, 126, 0, .10);

  --grid:        rgba(11, 16, 23, .06);
  --grid-major:  rgba(11, 16, 23, .12);
  --shadow:      0 20px 50px -32px rgba(11, 16, 23, .45);
}

/* ------------------------------------------------------------------- base */
* { box-sizing: border-box; }

body {
  background: var(--ground);
  color: var(--text);
  font-family: var(--ff-body);
  font-size: 16.5px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* The 100 mm setting-out grid the sketch mode draws on, behind everything. */
.grid-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right,  var(--grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid) 1px, transparent 1px),
    linear-gradient(to right,  var(--grid-major) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-major) 1px, transparent 1px);
  background-size: 32px 32px, 32px 32px, 160px 160px, 160px 160px;
  mask-image: radial-gradient(120% 80% at 50% 0%, #000 0%, rgba(0,0,0,.35) 55%, transparent 100%);
}

.wrap { width: min(1140px, 100% - 44px); margin-inline: auto; }
.narrow { width: min(760px, 100% - 44px); margin-inline: auto; }

h1, h2, h3, h4 { font-family: var(--ff-display); text-wrap: balance; margin: 0; }
p { margin: 0; }
a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--hivis);
  outline-offset: 3px;
  border-radius: 1px;
}

/* Hazard stripe — the one piece of pure site vernacular, used sparingly. */
.hazard {
  height: 6px;
  background-image: repeating-linear-gradient(
    118deg, var(--hivis) 0 13px, transparent 13px 26px);
  background-color: var(--line-soft);
}

/* --------------------------------------------------------------- topbar */
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--ground) 86%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--line);
}
.topbar-in {
  display: flex;
  align-items: center;
  gap: 18px;
  height: 66px;
}
.mark {
  display: flex;
  align-items: center;
  gap: 11px;
  text-decoration: none;
  margin-right: auto;
}
.mark-glyph {
  width: 30px; height: 30px;
  flex: none;
}
.mark-name {
  font-family: var(--ff-display);
  font-variation-settings: "wdth" 112;
  font-weight: 700;
  font-size: 15.5px;
  letter-spacing: .13em;
  text-transform: uppercase;
  line-height: 1;
}
.mark-name span { color: var(--hivis); }
nav.links { display: flex; align-items: center; gap: 4px; }
nav.links a {
  font-family: var(--ff-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  padding: 8px 12px;
  border: 1px solid transparent;
  transition: color .16s, border-color .16s;
}
nav.links a:hover { color: var(--text); border-color: var(--line); }
nav.links a[aria-current="page"] { color: var(--hivis); border-color: var(--hivis); }
.theme-btn {
  font-family: var(--ff-mono);
  font-size: 12.5px;
  letter-spacing: .06em;
  background: none;
  color: var(--text-dim);
  border: 1px solid var(--line);
  padding: 8px 11px;
  cursor: pointer;
  transition: color .16s, border-color .16s;
}
.theme-btn:hover { color: var(--hivis); border-color: var(--hivis); }
@media (max-width: 620px) {
  nav.links a { padding: 8px 8px; font-size: 11.5px; }
  .theme-btn { display: none; }
}

/* ----------------------------------------------------------- primitives */
.eyebrow {
  font-family: var(--ff-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .19em;
  text-transform: uppercase;
  color: var(--hivis);
  display: flex;
  align-items: center;
  gap: 14px;
}
.eyebrow::after {
  content: "";
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, var(--line), transparent);
}

.tag {
  font-family: var(--ff-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 4px 8px;
  border: 1px solid var(--line);
  color: var(--text-dim);
  white-space: nowrap;
}
.tag.clause { color: var(--hivis); border-color: color-mix(in srgb, var(--hivis) 45%, transparent); }
.tag.pass   { color: var(--pass); border-color: color-mix(in srgb, var(--pass) 45%, transparent); background: var(--pass-wash); }
.tag.fail   { color: var(--fail); border-color: color-mix(in srgb, var(--fail) 45%, transparent); background: var(--fail-wash); }
.tag.measure{ color: var(--measure); border-color: color-mix(in srgb, var(--measure) 45%, transparent); }

/* Panels get drawing-board corner ticks rather than a soft radius. */
.panel {
  position: relative;
  /* Was the literal rgba(17, 23, 31, .75) — which is exactly --panel at 75%, but
     frozen at the dark value. The text on it uses --text and --text-dim, and those
     do flip, so in the light theme the panels were dark ink on a dark plate and the
     writing all but vanished. Through the token it is the same colour in the dark
     and the right one in the light. */
  background: color-mix(in srgb, var(--panel) 75%, transparent);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--line);
  padding: 26px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.panel:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.4);
  border-color: var(--hivis);
}
.panel::before, .panel::after {
  content: "";
  position: absolute;
  width: 9px; height: 9px;
  border: 1.5px solid var(--hivis);
  opacity: .65;
}
.panel::before { top: -1px; left: -1px; border-right: 0; border-bottom: 0; }
.panel::after  { bottom: -1px; right: -1px; border-left: 0; border-top: 0; }

.num { font-family: var(--ff-mono); font-variant-numeric: tabular-nums; }

section { padding-block: 82px; }
section > .wrap > .eyebrow { margin-bottom: 22px; }
h2.sec {
  font-variation-settings: "wdth" 118;
  font-weight: 700;
  font-size: clamp(1.85rem, 3.6vw, 2.7rem);
  line-height: 1.06;
  letter-spacing: -.015em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.lede { color: var(--text-dim); font-size: 1.06rem; max-width: 62ch; }

/* ---------------------------------------------------------------- hero */
.hero { padding-top: 66px; padding-bottom: 30px; }
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: 54px;
  align-items: start;
}
@media (max-width: 940px) { .hero-grid { grid-template-columns: 1fr; gap: 38px; } }

.hero h1 {
  font-variation-settings: "wdth" 122;
  font-weight: 800;
  font-size: clamp(2.5rem, 6.4vw, 4.5rem);
  line-height: .95;
  letter-spacing: -.025em;
  text-transform: uppercase;
  margin-block: 20px 22px;
}
.hero h1 em { font-style: normal; color: var(--hivis); }
.hero p.big { font-size: 1.12rem; color: var(--text-dim); max-width: 46ch; }
.hero .kicker {
  font-family: var(--ff-mono);
  font-size: 12.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.hero-facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
}
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; align-items: center; }
.btn {
  font-family: var(--ff-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 13px 22px;
  border: 1px solid var(--hivis);
  background: var(--hivis);
  color: var(--on-hivis);
  transition: transform .14s ease, box-shadow .14s ease;
}
.btn:hover { transform: translateY(-2px); box-shadow: 0 10px 22px -12px var(--hivis); }
.btn.ghost { background: transparent; color: var(--hivis); }

/* ------------------------------------------------------- gap simulator */
.rig { background: var(--panel); border: 1px solid var(--line); box-shadow: var(--shadow); }
.rig-head {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}
.rig-head .label {
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-right: auto;
}
.surf {
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: .05em;
  text-transform: uppercase;
  background: transparent;
  color: var(--text-dim);
  border: 1px solid var(--line);
  padding: 6px 10px;
  cursor: pointer;
  transition: color .15s, border-color .15s, background .15s;
}
.surf:hover { color: var(--text); }
.surf[aria-pressed="true"] {
  color: var(--hivis);
  border-color: var(--hivis);
  background: var(--hivis-wash);
}
.rig-svg { display: block; width: 100%; height: auto; touch-action: none; }
#grab { cursor: grab; }
#grab:active { cursor: grabbing; }
.rig-foot {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  padding: 14px 16px;
  border-top: 1px solid var(--line);
  background: var(--panel-2);
}
.verdict {
  font-family: var(--ff-display);
  font-variation-settings: "wdth" 112;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  font-size: 15px;
  padding: 7px 13px;
  border: 1px solid;
}
.verdict.is-pass { color: var(--pass); border-color: var(--pass); background: var(--pass-wash); }
.verdict.is-fail { color: var(--fail); border-color: var(--fail); background: var(--fail-wash); }
.rig-foot .said { font-size: .94rem; color: var(--text-dim); flex: 1 1 240px; }
.rig-foot .said b { color: var(--text); font-weight: 600; }
.hint {
  font-family: var(--ff-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--text-faint);
  margin-top: 12px;
  text-align: right;
}

/* --------------------------------------------------------------- steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }
.step { background: var(--panel); padding: 24px 22px 26px; }
.step .n {
  font-family: var(--ff-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--hivis);
  display: block;
  margin-bottom: 12px;
}
.step h3 {
  font-variation-settings: "wdth" 108;
  font-weight: 600;
  font-size: 1.16rem;
  letter-spacing: -.005em;
  margin-bottom: 8px;
}
.step p { color: var(--text-dim); font-size: .95rem; }

/* ------------------------------------------------------------- clauses */
.clause-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 820px) { .clause-grid { grid-template-columns: 1fr; } }
.clause-card { display: flex; flex-direction: column; gap: 14px; }
.clause-top { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.clause-top .val {
  margin-left: auto;
  font-family: var(--ff-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--hivis);
  letter-spacing: -.02em;
}
.clause-card h3 {
  font-variation-settings: "wdth" 106;
  font-weight: 600;
  font-size: 1.12rem;
}
.clause-card p { color: var(--text-dim); font-size: .95rem; }
blockquote {
  margin: 0;
  padding: 12px 0 12px 16px;
  border-left: 2px solid var(--line);
  color: var(--text);
  font-size: .93rem;
  line-height: 1.55;
}
blockquote::before { content: "\201C"; }
blockquote::after  { content: "\201D"; }
blockquote cite {
  display: block;
  margin-top: 8px;
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--text-faint);
  font-style: normal;
}

/* -------------------------------------------------------------- splits */
.split { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; } }
.split h3 {
  font-variation-settings: "wdth" 108;
  font-weight: 600;
  font-size: 1.2rem;
  margin-bottom: 10px;
}
.split p { color: var(--text-dim); font-size: .96rem; }
.split p + p { margin-top: 10px; }

ul.ticks { list-style: none; padding: 0; margin: 0; display: grid; gap: 11px; }
ul.ticks li {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 12px;
  color: var(--text-dim);
  font-size: .96rem;
}
ul.ticks li::before {
  content: "";
  width: 9px; height: 9px;
  margin-top: 8px;
  border-left: 1.5px solid var(--hivis);
  border-bottom: 1.5px solid var(--hivis);
}
ul.ticks li b { color: var(--text); font-weight: 600; }
ul.ticks.no li::before { border-color: var(--fail); transform: rotate(45deg); }

/* --------------------------------------------------------------- specs */
.specs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
@media (max-width: 820px) { .specs { grid-template-columns: repeat(2, 1fr); } }
.spec { background: var(--panel); padding: 20px; }
.spec dt {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 8px;
}
.spec dd {
  margin: 0;
  font-family: var(--ff-display);
  font-variation-settings: "wdth" 106;
  font-weight: 600;
  font-size: 1.05rem;
}

/* ------------------------------------------------------------- privacy */
.doc-head { padding-top: 58px; padding-bottom: 12px; }
.doc-head h1 {
  font-variation-settings: "wdth" 120;
  font-weight: 800;
  font-size: clamp(2.2rem, 5.4vw, 3.6rem);
  line-height: .98;
  letter-spacing: -.02em;
  text-transform: uppercase;
  margin-block: 16px 18px;
}
.doc-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}
.doc { padding-block: 34px 90px; }
.doc article { display: grid; gap: 40px; }
.doc h2 {
  font-family: var(--ff-display);
  font-variation-settings: "wdth" 110;
  font-weight: 700;
  font-size: 1.34rem;
  letter-spacing: -.005em;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 16px;
  display: flex;
  align-items: baseline;
  gap: 12px;
}
.doc h2 .no {
  font-family: var(--ff-mono);
  font-size: .78rem;
  font-weight: 500;
  color: var(--hivis);
  letter-spacing: .1em;
}
.doc h3 {
  font-family: var(--ff-body);
  font-weight: 600;
  font-size: 1rem;
  margin-block: 18px 6px;
}
.doc p, .doc li { color: var(--text-dim); }
.doc p + p { margin-top: 12px; }
.doc p b, .doc li b { color: var(--text); font-weight: 600; }
.doc ul { margin: 12px 0 0; padding-left: 20px; display: grid; gap: 9px; }
.doc a { color: var(--hivis); text-underline-offset: 3px; }

.glance { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
@media (max-width: 780px) { .glance { grid-template-columns: 1fr; } }
.glance .panel { padding: 20px; }
.glance h3 {
  font-family: var(--ff-display);
  font-variation-settings: "wdth" 108;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: .01em;
  margin-block: 10px 8px;
}
.glance p { font-size: .92rem; }

.tablewrap { overflow-x: auto; margin-top: 16px; border: 1px solid var(--line); }
table { border-collapse: collapse; width: 100%; min-width: 640px; font-size: .92rem; }
th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line-soft); vertical-align: top; }
thead th {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--text-faint);
  background: var(--panel-2);
  border-bottom: 1px solid var(--line);
}
tbody td { color: var(--text-dim); }
tbody td:first-child { color: var(--text); font-weight: 500; }
tbody tr:last-child td { border-bottom: 0; }

.callout {
  border-left: 3px solid var(--hivis);
  background: var(--hivis-wash);
  padding: 18px 20px;
}
.callout p { color: var(--text); }
.slot {
  font-family: var(--ff-mono);
  font-size: .9em;
  padding: 2px 7px;
  border: 1px dashed var(--hivis);
  color: var(--hivis);
  white-space: nowrap;
}

/* -------------------------------------------------------------- footer */
footer { border-top: 1px solid var(--line); background: var(--ground-2); padding-block: 40px 46px; }
.foot-grid { display: flex; flex-wrap: wrap; gap: 26px; align-items: flex-start; }
.foot-grid .col { flex: 1 1 200px; }
footer h4 {
  font-family: var(--ff-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 12px;
}
footer a { color: var(--text-dim); text-decoration: none; display: block; padding: 3px 0; }
footer a:hover { color: var(--hivis); }
footer .fine { color: var(--text-faint); font-size: .85rem; max-width: 48ch; }

/* -------------------------------------------------------------- motion */
.rise { opacity: 0; transform: translateY(14px); animation: rise .7s cubic-bezier(.2,.7,.3,1) forwards; }
.rise.d1 { animation-delay: .06s; }
.rise.d2 { animation-delay: .13s; }
.rise.d3 { animation-delay: .2s; }
.rise.d4 { animation-delay: .28s; }
@keyframes rise { to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  .rise { animation: none; opacity: 1; transform: none; }
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}

/* ------------------------------------------------------------- get-app */
.get-app {
  text-align: center;
  padding-block: 72px 82px;
}
.get-app h2 {
  font-variation-settings: "wdth" 120;
  font-weight: 800;
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: .97;
  letter-spacing: -.02em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.get-app h2 em { font-style: normal; color: var(--hivis); }
.get-app p { color: var(--text-dim); font-size: 1.06rem; max-width: 52ch; margin-inline: auto; margin-bottom: 28px; }
.get-app .btns { display: flex; flex-wrap: wrap; gap: 14px; justify-content: center; }

/* The Play Store badge-style button */
.store-btn {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--ff-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 14px 26px;
  border: 2px solid var(--hivis);
  background: var(--hivis);
  color: var(--on-hivis);
  transition: transform .16s ease, box-shadow .16s ease;
}
.store-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 14px 30px -14px var(--hivis);
}
.store-btn svg { flex: none; }
.store-btn .store-text { text-align: left; line-height: 1.35; }
.store-btn .store-text small {
  display: block;
  font-size: 10px;
  font-weight: 400;
  letter-spacing: .14em;
  opacity: .7;
}

/* ------------------------------------------------------ scroll-to-top */
.to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 50;
  width: 44px; height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--hivis);
  color: var(--on-hivis);
  border: none;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s, transform .2s;
  transform: translateY(8px);
  box-shadow: 0 6px 18px -6px rgba(0,0,0,.5);
}
.to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: none;
}
.to-top:hover { transform: translateY(-2px); }
.to-top svg { width: 20px; height: 20px; }