/* ==========================================================================
   Shane Marks — "desktop OS" theme
   A playful macOS-desktop collage aesthetic (menu bar, scattered windows,
   iMessage bubbles, dotted grid, folder clutter).
   ========================================================================== */

:root {
  --bg: #f1f0ee;
  --dot: #d9d8d4;
  --ink: #1a1a1a;
  --ink-2: #3c3c3c;
  --muted: #8c8b87;
  --muted-2: #b4b3ae;
  --line: #e2e1dd;
  --card: #ffffff;
  --blue: #0a7cff;
  --blue-2: #2f8bff;
  --orange: #ff8a3d;
  --orange-2: #ff6a2b;
  --green: #35c759;
  --red: #ff5f57;
  --yellow: #febc2e;
  --gray-btn: #1a1a1a;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 14px 34px -18px rgba(20, 20, 20, 0.32);
  --shadow-win: 0 20px 44px -20px rgba(20, 20, 20, 0.4);
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --maxw: 1200px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background-color: var(--bg);
  background-image: radial-gradient(var(--dot) 1.4px, transparent 1.4px);
  background-size: 22px 22px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  letter-spacing: -0.01em;
}
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
.wrap { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 26px; }
.lower { text-transform: lowercase; }

/* ---------- Fake macOS menu bar ---------- */
.menubar {
  position: sticky;
  top: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  height: 44px;
  padding: 0 18px;
  background: rgba(246, 245, 243, 0.72);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid transparent;
  font-size: 14px;
  transition: border-color 0.3s ease, background 0.3s ease;
}
.menubar.scrolled { border-bottom-color: var(--line); }
.mb-left { display: flex; align-items: center; gap: 20px; }
.mb-brand { font-weight: 700; font-size: 15px; }
.mb-nav { display: flex; align-items: center; gap: 18px; }
.mb-nav a { color: var(--ink-2); transition: color 0.15s ease; }
.mb-nav a:hover, .mb-nav a.is-current { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }
.mb-logo { position: absolute; left: 50%; transform: translateX(-50%); font-weight: 800; font-size: 18px; letter-spacing: 0.04em; }
.mb-right { display: flex; align-items: center; gap: 14px; color: var(--ink-2); }
.mb-tray { display: flex; align-items: center; gap: 12px; }
.mb-tray > svg { width: 17px; height: 17px; display: block; opacity: 0.72; }
.tray-item { position: relative; display: inline-flex; align-items: center; }
.tray-item > svg { width: 17px; height: 17px; display: block; opacity: 0.72; cursor: default; transition: opacity 0.15s ease; }
.tray-item:hover > svg { opacity: 1; }
.tray-pop {
  position: absolute; top: calc(100% + 9px); left: 50%;
  transform: translateX(-50%) translateY(-6px) scale(0.95); transform-origin: top center;
  display: inline-flex; align-items: center; gap: 9px; white-space: nowrap;
  padding: 9px 15px; border-radius: 999px; font-size: 14px; font-weight: 600; color: #161616;
  border: 1px solid #cfcfcf;
  background-image:
    linear-gradient(to bottom, rgba(255,255,255,0.95) 1%, rgba(255,255,255,0.4) 42%, rgba(255,255,255,0) 60%, rgba(255,255,255,0.28) 100%),
    linear-gradient(to bottom, #ffffff, #ededed);
  box-shadow: inset 0 1px 1.5px rgba(255,255,255,0.95), 0 12px 26px -10px rgba(0,0,0,0.4), 0 3px 8px rgba(0,0,0,0.15);
  text-shadow: 0 0 3px rgba(255,255,255,0.9);
  opacity: 0; visibility: hidden; pointer-events: none; z-index: 300;
  transition: opacity 0.18s ease, transform 0.2s cubic-bezier(0.2,0.8,0.2,1), visibility 0s linear 0.2s;
}
.tray-item:hover .tray-pop { opacity: 1; visibility: visible; pointer-events: auto; transform: translateX(-50%) translateY(0) scale(1); transition-delay: 0s; }
.tray-pop svg { width: 16px; height: 16px; display: block; opacity: 1; flex: 0 0 auto; }
.tray-pop .tp-check { width: 15px; height: 15px; }
.np { display: flex; flex-direction: column; line-height: 1.08; }
.np b { font-size: 13.5px; font-weight: 700; }
.np span { font-size: 11.5px; font-weight: 500; color: #6a6a6a; }
.np-art { width: 22px; height: 22px; border-radius: 6px; display: flex; align-items: center; justify-content: center; color: #fff; font-size: 12px; background: linear-gradient(135deg, #ff6a2b, #2c78ff); flex: 0 0 auto; }
.np-wave { display: inline-flex; align-items: flex-end; gap: 2.5px; height: 15px; }
.np-wave i { width: 2.5px; background: #111; border-radius: 2px; animation: eq 0.9s ease-in-out infinite; }
.np-wave i:nth-child(1) { height: 6px; animation-delay: -0.2s; }
.np-wave i:nth-child(2) { height: 13px; animation-delay: -0.5s; }
.np-wave i:nth-child(3) { height: 8px; animation-delay: -0.1s; }
.np-wave i:nth-child(4) { height: 14px; animation-delay: -0.35s; }
@keyframes eq { 0%, 100% { transform: scaleY(0.35); } 50% { transform: scaleY(1); } }
@media (prefers-reduced-motion: reduce) { .np-wave i { animation: none; } }
.batt-pop svg { color: #ff9f0a; }
.batt-line { font-weight: 600; letter-spacing: 0.1px; }
.mb-clock { font-variant-numeric: tabular-nums; font-size: 13.5px; }
.mb-get { display: inline-flex; align-items: center; gap: 6px; color: var(--blue); font-weight: 600; }
.mb-get svg { width: 15px; height: 15px; }

/* menu toggle (mobile) */
.mb-toggle { display: none; background: none; border: 0; cursor: pointer; font-size: 20px; line-height: 1; padding: 4px 6px; }

/* ---------- Window card ---------- */
.win {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-win);
  overflow: hidden;
}
.win-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 26px;
  padding: 0 10px;
  background: linear-gradient(#fbfbfa, #f1f1ef);
  border-bottom: 1px solid var(--line);
  position: relative;
}
.win-bar i { width: 11px; height: 11px; border-radius: 50%; display: block; }
.win-bar i.r { background: var(--red); }
.win-bar i.y { background: var(--yellow); }
.win-bar i.g { background: var(--green); }
.win-bar .win-title { position: absolute; left: 0; right: 0; text-align: center; font-size: 12px; color: var(--muted); pointer-events: none; }
.win-body { display: block; background: #eceae6; }
.win-body img { width: 100%; height: 100%; object-fit: cover; display: block; }
.win-cap { text-align: center; font-size: 12.5px; color: var(--muted); margin-top: 8px; }

/* ---------- Hero ---------- */
.os-hero { position: relative; padding: 40px 0 30px; min-height: 86vh; }
@media (max-width: 900px) { .os-hero { min-height: auto; } }
.os-hero-core {
  position: relative;
  z-index: 5;
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
  padding: 70px 24px 20px;
}
.os-title { font-size: clamp(42px, 11vw, 118px); font-weight: 800; line-height: 0.95; letter-spacing: -0.04em; white-space: nowrap; }
.os-sub { font-size: clamp(17px, 2.4vw, 22px); color: var(--ink-2); margin-top: 18px; }
.os-cta { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; margin-top: 30px; }
.os-note { font-size: 13.5px; color: var(--muted); margin-top: 16px; }

/* buttons */
.btn-os {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 16px;
  font-weight: 600;
  padding: 14px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
  white-space: nowrap;
}
.btn-os svg { width: 18px; height: 18px; }
/* ---------- Aqua gel recipes (macOS glossy style, from the reference) ---------- */
.gel-blue {
  color: #0c1330;
  border: 1px solid #2833a3;
  background-image:
    linear-gradient(to bottom, rgba(255,255,255,0.92) 1%, rgba(255,255,255,0.42) 28%, rgba(255,255,255,0.06) 46%, rgba(255,255,255,0) 48%, rgba(255,255,255,0.12) 90%, rgba(255,255,255,0.34) 100%),
    linear-gradient(to bottom, #aed2ff 0%, #74b2ff 45%, #2c78ff 47%, #2c78ff 82%, #59a0ff 100%);
  box-shadow: inset 0 1px 1.5px rgba(255,255,255,0.95), inset 0 -6px 10px rgba(255,255,255,0.18), 0 8px 18px -6px rgba(44,120,255,0.55), 0 2px 5px rgba(10,20,60,0.28);
  text-shadow: 0 0 3px rgba(255,255,255,0.85);
}
.gel-silver {
  color: #1a1a1a;
  border: 1px solid #b6b6b6;
  background-image:
    linear-gradient(to bottom, rgba(255,255,255,0.95) 1%, rgba(255,255,255,0.45) 30%, rgba(255,255,255,0) 48%, rgba(255,255,255,0.08) 90%, rgba(255,255,255,0.3) 100%),
    linear-gradient(to bottom, #ffffff 0%, #ececec 46%, #cfcfcf 47%, #d9d9d9 82%, #f3f3f3 100%);
  box-shadow: inset 0 1px 1.5px rgba(255,255,255,0.95), 0 6px 14px -6px rgba(0,0,0,0.22), 0 2px 4px rgba(0,0,0,0.14);
  text-shadow: 0 0 3px rgba(255,255,255,0.9);
}
.gel-orange {
  color: #3a1600;
  border: 1px solid #d1621f;
  background-image:
    linear-gradient(to bottom, rgba(255,255,255,0.9) 1%, rgba(255,255,255,0.4) 28%, rgba(255,255,255,0.05) 46%, rgba(255,255,255,0) 48%, rgba(255,255,255,0.12) 90%, rgba(255,255,255,0.32) 100%),
    linear-gradient(to bottom, #ffd3a8 0%, #ffab63 45%, #ff7a2e 47%, #ff7a2e 82%, #ff9a55 100%);
  box-shadow: inset 0 1px 1.5px rgba(255,255,255,0.9), inset 0 -6px 10px rgba(255,255,255,0.16), 0 8px 16px -6px rgba(255,122,46,0.5), 0 2px 5px rgba(80,30,0,0.22);
  text-shadow: 0 0 3px rgba(255,255,255,0.7);
}

.btn-os.dark {
  color: #0c1330;
  border: 1px solid #2833a3;
  background-image:
    linear-gradient(to bottom, rgba(255,255,255,0.92) 1%, rgba(255,255,255,0.42) 28%, rgba(255,255,255,0.06) 46%, rgba(255,255,255,0) 48%, rgba(255,255,255,0.12) 90%, rgba(255,255,255,0.34) 100%),
    linear-gradient(to bottom, #aed2ff 0%, #74b2ff 45%, #2c78ff 47%, #2c78ff 82%, #59a0ff 100%);
  box-shadow: inset 0 1px 1.5px rgba(255,255,255,0.95), inset 0 -6px 10px rgba(255,255,255,0.18), 0 8px 18px -6px rgba(44,120,255,0.55), 0 2px 5px rgba(10,20,60,0.28);
  text-shadow: 0 0 3px rgba(255,255,255,0.85);
}
.btn-os.dark:hover { transform: translateY(-2px); box-shadow: inset 0 1px 1.5px rgba(255,255,255,0.95), inset 0 -6px 10px rgba(255,255,255,0.2), 0 13px 24px -6px rgba(44,120,255,0.62), 0 3px 6px rgba(10,20,60,0.3); }
.btn-os.light {
  color: #1a1a1a;
  border: 1px solid #b6b6b6;
  background-image:
    linear-gradient(to bottom, rgba(255,255,255,0.95) 1%, rgba(255,255,255,0.45) 30%, rgba(255,255,255,0) 48%, rgba(255,255,255,0.08) 90%, rgba(255,255,255,0.3) 100%),
    linear-gradient(to bottom, #ffffff 0%, #ececec 46%, #cfcfcf 47%, #d9d9d9 82%, #f3f3f3 100%);
  box-shadow: inset 0 1px 1.5px rgba(255,255,255,0.95), 0 6px 14px -6px rgba(0,0,0,0.22), 0 2px 4px rgba(0,0,0,0.14);
  text-shadow: 0 0 3px rgba(255,255,255,0.9);
}
.btn-os.light:hover { transform: translateY(-2px); box-shadow: inset 0 1px 1.5px rgba(255,255,255,0.95), 0 10px 20px -6px rgba(0,0,0,0.24), 0 3px 6px rgba(0,0,0,0.16); }
.btn-os:active { transform: translateY(0); }

/* featured play-video window */
.playwin { position: relative; z-index: 6; max-width: 640px; margin: 40px auto 0; }
.playwin .win-body { aspect-ratio: 16 / 9; position: relative; }
.playbtn {
  position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  display: inline-flex; align-items: center; gap: 9px;
  background: rgba(255, 255, 255, 0.92); color: var(--ink);
  font-weight: 600; font-size: 15px; padding: 11px 20px 11px 16px;
  border-radius: 999px; box-shadow: var(--shadow);
  backdrop-filter: blur(4px); transition: transform 0.16s ease;
}
.playbtn:hover { transform: translate(-50%, -50%) scale(1.05); }
.playbtn svg { width: 16px; height: 16px; fill: var(--ink); }

/* floating accents between sections */
.floatie { position: absolute; z-index: 1; pointer-events: none; user-select: none; }
.floatie.kao { font-size: 22px; color: var(--muted); }
.floatie.icon { font-size: 34px; filter: drop-shadow(0 6px 10px rgba(0,0,0,0.14)); }
.os-section { position: relative; }

/* scattered desktop layer */
.os-scatter { position: absolute; inset: 0; z-index: 1; pointer-events: none; display: none; }
@media (min-width: 1200px) { .os-scatter { display: block; } }
.os-scatter .win, .os-scatter .kao, .os-scatter .deskicon, .os-scatter .sticky-note { position: absolute; pointer-events: auto; }
.os-scatter .win { width: 190px; }
.os-scatter .win .win-body { aspect-ratio: 4 / 3; }
.float:hover { z-index: 30; }
.os-scatter .win.float:hover { box-shadow: 0 30px 60px -22px rgba(20,20,20,0.5); }
.kao { font-size: 22px; color: var(--ink-2); font-weight: 600; user-select: none; }
.deskicon { font-size: 40px; line-height: 1; filter: drop-shadow(0 6px 10px rgba(0,0,0,0.16)); user-select: none; }
.sticky-note {
  width: 120px; padding: 14px 12px 18px; background: #fff;
  box-shadow: var(--shadow); font-size: 12px; color: var(--ink-2);
  border-top: 16px solid var(--blue);
}
.sticky-note.red { border-top-color: var(--red); }
.sticky-note b { display: block; font-size: 13px; margin-bottom: 4px; letter-spacing: 0.06em; }

/* hide the heavy scatter on small screens */
@media (max-width: 900px) {
  .os-hero-core { padding-top: 30px; }
}

/* ---------- Section label pill ---------- */
.pill-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
  background: #fff;
  border: 1px solid var(--line);
  padding: 8px 18px;
  border-radius: 999px;
  box-shadow: var(--shadow);
}

/* ---------- Section ---------- */
.os-section { padding: 70px 0; }
.os-section-head { text-align: center; max-width: 640px; margin: 0 auto 44px; }
.os-section-head h2 { font-size: clamp(30px, 4.6vw, 52px); font-weight: 800; letter-spacing: -0.03em; line-height: 1; margin: 20px 0 14px; }
.os-section-head p { font-size: 17px; color: var(--muted); }

/* ---------- Feature row (chat bubbles + window) ---------- */
.feature { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 56px; align-items: center; margin-bottom: 60px; }
.feature.flip .feature-media { order: -1; }
.feature-copy .imsgs { margin-bottom: 22px; }
.feature-copy h3 { font-size: clamp(24px, 3vw, 32px); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 12px; }
.feature-copy p { font-size: 17px; color: var(--muted); max-width: 42ch; }
.feature-media .win .win-body { aspect-ratio: 16 / 10; }

/* iMessage bubbles */
.imsg { display: inline-block; max-width: 320px; padding: 13px 20px; border-radius: 22px; font-size: 19px; font-weight: 600; line-height: 1.3; position: relative; }
.imsg.blue {
  color: #0c1330; border: 1px solid #2833a3;
  background-image:
    linear-gradient(to bottom, rgba(255,255,255,0.9) 1%, rgba(255,255,255,0.4) 30%, rgba(255,255,255,0.05) 47%, rgba(255,255,255,0) 49%, rgba(255,255,255,0.12) 92%, rgba(255,255,255,0.32) 100%),
    linear-gradient(to bottom, #aed2ff 0%, #74b2ff 46%, #2c78ff 48%, #2c78ff 82%, #59a0ff 100%);
  box-shadow: inset 0 1px 1.5px rgba(255,255,255,0.95), inset 0 -5px 9px rgba(255,255,255,0.18), 0 6px 14px -6px rgba(44,120,255,0.5), 0 2px 4px rgba(10,20,60,0.22);
  text-shadow: 0 0 3px rgba(255,255,255,0.85);
  border-bottom-left-radius: 8px;
}
.imsg.orange {
  color: #3a1600; border: 1px solid #d1621f;
  background-image:
    linear-gradient(to bottom, rgba(255,255,255,0.9) 1%, rgba(255,255,255,0.4) 30%, rgba(255,255,255,0.05) 47%, rgba(255,255,255,0) 49%, rgba(255,255,255,0.12) 92%, rgba(255,255,255,0.32) 100%),
    linear-gradient(to bottom, #ffd3a8 0%, #ffab63 46%, #ff7a2e 48%, #ff7a2e 82%, #ff9a55 100%);
  box-shadow: inset 0 1px 1.5px rgba(255,255,255,0.9), inset 0 -5px 9px rgba(255,255,255,0.16), 0 6px 14px -6px rgba(255,122,46,0.5), 0 2px 4px rgba(80,30,0,0.2);
  text-shadow: 0 0 3px rgba(255,255,255,0.7);
  border-bottom-right-radius: 8px; float: right; clear: both;
}
.imsgs { display: flow-root; }
.imsgs .imsg { margin-bottom: 10px; }

/* ---------- Notes app (about / letter) ---------- */
.notes-win { max-width: 620px; margin: 0 auto; }
.notes-win .win-bar { background: linear-gradient(#fdf7e3, #f8efcf); }
.notes-win .win-title { color: #b09a4e; }
.notes-body { padding: 34px 36px 30px; background: #fff; }
.notes-body p { font-size: 17px; color: var(--ink-2); margin-bottom: 16px; }
.notes-body p mark { background: #fff2a8; padding: 1px 3px; }
.notes-sign { display: flex; align-items: center; justify-content: space-between; margin-top: 26px; }
.notes-sign .who { display: flex; align-items: center; gap: 12px; }
.notes-sign .who img { width: 46px; height: 46px; border-radius: 50%; object-fit: cover; }
.notes-sign .who b { display: block; font-size: 15px; }
.notes-sign .who span { font-size: 13px; color: var(--muted); }
.notes-sign .mark { font-size: 26px; font-weight: 800; letter-spacing: 0.02em; }

/* ---------- Work / gallery windows ---------- */
.win-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.win-grid .win .win-body { aspect-ratio: 4 / 3; }
.win-grid .win-cap { margin-bottom: 4px; }

/* ---------- Chips (what i do) ---------- */
.os-chips { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; max-width: 760px; margin: 0 auto; }
.os-chip { font-size: 14px; font-weight: 500; color: var(--ink-2); background: #fff; border: 1px solid var(--line); padding: 9px 16px; border-radius: 999px; box-shadow: var(--shadow); transition: transform 0.15s ease; }
.os-chip:hover { transform: translateY(-2px) rotate(-1deg); }

/* ---------- FAQ ---------- */
.faq { max-width: 720px; margin: 0 auto; display: grid; gap: 12px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: var(--radius-sm); box-shadow: var(--shadow); overflow: hidden; }
.faq summary { list-style: none; cursor: pointer; display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 20px 22px; font-size: 18px; font-weight: 600; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary .plus { font-size: 22px; color: var(--muted); transition: transform 0.2s ease; }
.faq details[open] summary .plus { transform: rotate(45deg); }
.faq details p { padding: 0 22px 22px; font-size: 16px; color: var(--muted); }

/* ---------- Footer ---------- */
.os-footer { padding: 70px 0 40px; border-top: 1px solid var(--line); margin-top: 30px; position: relative; }
.os-footer-cols { display: grid; grid-template-columns: repeat(4, 1fr); gap: 30px; max-width: 980px; margin: 0 auto; }
.os-footer-cols h4 { font-size: 15px; font-weight: 700; margin-bottom: 16px; }
.os-footer-cols a { display: block; font-size: 15px; color: var(--muted); margin-bottom: 11px; transition: color 0.15s ease; }
.os-footer-cols a:hover { color: var(--ink); }
.os-footer-cols .note { font-size: 14px; color: var(--muted); line-height: 1.6; }
.os-wordmark { text-align: center; font-size: clamp(70px, 18vw, 200px); font-weight: 800; letter-spacing: -0.04em; color: #cfd8ee; line-height: 0.9; margin: 40px 0 10px; user-select: none; position: relative; }
.os-wordmark .fdr { filter: drop-shadow(0 8px 10px rgba(0,0,0,0.1)); }
.os-copy { text-align: center; font-size: 13px; color: var(--muted-2); }
.os-footer .deskicon { position: absolute; }

@media (max-width: 780px) {
  .feature { grid-template-columns: 1fr; gap: 26px; }
  .feature.flip .feature-media { order: 0; }
  .win-grid { grid-template-columns: 1fr 1fr; }
  .os-footer-cols { grid-template-columns: 1fr 1fr; gap: 26px; }
  .mb-nav { display: none; }
  .mb-toggle { display: block; }
  .mb-logo { display: none; }
  .floatie { display: none; }
  .os-footer .deskicon { display: none; }
}
@media (max-width: 520px) {
  .win-grid { grid-template-columns: 1fr; }
  .mb-tray { display: none; }
  .os-hero-core { padding-left: 20px; padding-right: 20px; }
  .os-cta { flex-direction: column; align-items: stretch; gap: 12px; }
  .os-cta .btn-os { width: 100%; justify-content: center; }
}

/* mobile dropdown */
.mb-menu { display: none; }
.mb-menu.open {
  display: flex; flex-direction: column; gap: 2px;
  position: fixed; top: 44px; left: 0; right: 0; z-index: 190;
  background: #fff; border-bottom: 1px solid var(--line); padding: 8px 18px 16px;
  box-shadow: var(--shadow);
}
.mb-menu a { padding: 12px 6px; font-size: 17px; border-bottom: 1px solid var(--line); }
.mb-menu a:last-child { border-bottom: 0; }

@media (prefers-reduced-motion: reduce) {
  .float, .os-chip, .btn-os { transition: none; }
}