/* Sill for Mac — marketing site
   ui-ux-pro-max: Product Demo + Features, editorial broadsheet on paper.
   Tokens: design-system/sill/MASTER.md (editorial light direction) */

:root {
  --color-primary: #141210;
  --color-on-primary: #fbf9f4;
  --color-secondary: #4a453e;
  --color-on-secondary: #fbf9f4;
  --color-accent: #e4572e;
  --color-on-accent: #ffffff;
  --color-background: #fbf9f4;
  --color-background-alt: #f1ece1;
  --color-foreground: #1a1712;
  --color-card: #ffffff;
  --color-card-foreground: #1a1712;
  --color-muted: #ede7da;
  --color-muted-foreground: #6b6458;
  --color-border: rgba(20, 18, 16, 0.14);
  --color-rule: rgba(20, 18, 16, 0.85);
  --color-destructive: #c1361b;
  --color-ring: #e4572e;
  --color-pin: #e4572e;

  /* Dark plate (island demo) keeps the shipped product aesthetic */
  --blur-amount: 18px;

  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  --shadow-sm: 0 1px 2px rgba(20, 18, 16, 0.06);
  --shadow-md: 0 8px 24px rgba(20, 18, 16, 0.1);
  --shadow-lg: 0 18px 44px rgba(20, 18, 16, 0.16);
  --shadow-xl: 0 28px 64px rgba(0, 0, 0, 0.5);
  --focus: 0 0 0 3px rgba(228, 87, 46, 0.5);

  --nav-h: 60px;
  --page: 70rem;
  --measure: 38rem;
  --radius: 12px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --dur: 200ms;

  --font-serif: "New York", ui-serif, "Iowan Old Style", "Palatino Linotype",
    "Georgia", "Songti SC", "Noto Serif CJK SC", serif;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Inter",
    "PingFang SC", "Hiragino Sans GB", "Noto Sans SC", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: light;
  background: var(--color-background);
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  margin: 0;
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.6;
  color: var(--color-foreground);
  background:
    radial-gradient(ellipse 60% 40% at 100% 0%, rgba(228, 87, 46, 0.04), transparent 55%),
    var(--color-background);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  cursor: pointer;
}

a:hover {
  color: var(--color-accent);
}

button {
  cursor: pointer;
  font: inherit;
}

button:disabled,
.btn[disabled],
.btn[aria-disabled="true"] {
  cursor: default;
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus);
}

.skip {
  position: absolute;
  left: 12px;
  top: 8px;
  z-index: 40;
  padding: 8px 12px;
  background: var(--color-primary);
  color: var(--color-on-primary);
  border-radius: 8px;
  transform: translateY(-150%);
}

.skip:focus {
  transform: none;
}

html[data-lang="zh"] .lang-en,
html[data-lang="en"] .lang-zh {
  display: none;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* —— Masthead / Nav —— */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  min-height: var(--nav-h);
  padding: var(--space-sm) 24px;
  background: rgba(251, 249, 244, 0.85);
  -webkit-backdrop-filter: blur(12px) saturate(1.1);
  backdrop-filter: blur(12px) saturate(1.1);
  border-bottom: 2px solid var(--color-rule);
}

.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--color-foreground);
}

.wordmark:hover {
  color: var(--color-foreground);
}

.wordmark img {
  width: 30px;
  height: 30px;
  border-radius: 7px;
  box-shadow: 0 0 0 1px var(--color-border);
}

.nav-end {
  display: flex;
  align-items: center;
  gap: 10px;
}

.lang-switch {
  display: inline-flex;
  padding: 2px;
  border-radius: 8px;
  background: var(--color-muted);
  border: 1px solid var(--color-border);
}

.lang-switch button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--color-muted-foreground);
  font-size: 12px;
  font-weight: 590;
  padding: 6px 10px;
  min-height: 28px;
  border-radius: 6px;
  line-height: 1.2;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.lang-switch button:hover {
  color: var(--color-foreground);
}

.lang-switch button[aria-pressed="true"] {
  background: var(--color-card);
  color: var(--color-foreground);
  box-shadow: var(--shadow-sm);
}

.btn {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 0;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-decoration: none;
  line-height: 1.2;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease),
    color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.btn-cta {
  background: var(--color-primary);
  color: var(--color-on-primary);
  padding: 12px 18px;
  border-radius: 11px;
  box-shadow: var(--shadow-md);
}

.btn-cta:hover:not(:disabled) {
  color: var(--color-on-primary);
  background: #000;
  transform: translateY(-1px);
}

.btn-cta:disabled,
.btn-cta[aria-disabled="true"] {
  opacity: 1;
  color: var(--color-on-primary);
  -webkit-text-fill-color: var(--color-on-primary);
  filter: none;
}

.btn-cta .store {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1px;
}

.btn-cta .store small {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: rgba(251, 249, 244, 0.6);
}

.btn-cta .glyph {
  width: 20px;
  height: 20px;
  border-radius: 5px;
}

.btn-nav {
  padding: 8px 14px;
  min-height: 34px;
  background: transparent;
  color: var(--color-foreground);
  border: 1px solid var(--color-rule);
}

.btn-nav:hover {
  background: var(--color-muted);
  color: var(--color-foreground);
}

.sys {
  color: var(--color-muted-foreground);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

/* —— Editorial kicker (dept label + hairline) —— */
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 var(--space-md);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.kicker::after {
  content: "";
  width: 32px;
  height: 1px;
  background: var(--color-accent);
}

/* —— Hero —— */
.hero {
  max-width: var(--page);
  margin: 0 auto;
  padding: var(--space-3xl) 24px var(--space-2xl);
}

.hero .kicker {
  justify-content: flex-start;
}

.hero h1 {
  margin: 0 0 var(--space-lg);
  max-width: 16ch;
  font-family: var(--font-serif);
  font-size: clamp(2.6rem, 6vw, 4.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.lede {
  margin: 0;
  max-width: var(--measure);
  color: var(--color-secondary);
  font-size: 19px;
  line-height: 1.55;
}

.hero .lede {
  margin: 0 0 var(--space-xl);
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* —— Product demo plate —— */
.demo {
  max-width: var(--page);
  margin: 0 auto var(--space-2xl);
  padding: 0 24px;
}

/* A framed Mac desktop: the wallpaper supplies context, the island stays focal. */
.bezel {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--color-rule);
  background: #1c2740;
  box-shadow: var(--shadow-lg);
}

.stage {
  position: relative;
  min-height: 22rem;
  --px: 0;
  --py: 0;
  --scene-glow: rgba(255, 178, 143, 0.12);
  --scene-a: rgba(46, 92, 58, 0);
  --scene-b: rgba(28, 62, 96, 0);
  --stroke: rgba(255, 255, 255, 0.22);
  overflow: hidden;
}

.island-stroke { stroke: var(--stroke); }

.stage[data-scene="clear"] {
  --scene-glow: rgba(255, 178, 143, 0.12);
  --stroke: rgba(255, 255, 255, 0.22);
}

.stage[data-scene="constellation"] {
  --scene-glow: rgba(140, 150, 220, 0.18);
  --scene-a: rgba(40, 42, 90, 0.28);
  --stroke: rgba(180, 190, 255, 0.32);
}

.stage[data-scene="ripple"] {
  --scene-glow: rgba(48, 180, 200, 0.16);
  --scene-a: rgba(20, 80, 96, 0.28);
  --stroke: rgba(140, 210, 220, 0.3);
}

.stage[data-scene="forest"] {
  --scene-glow: rgba(80, 160, 90, 0.22);
  --scene-a: rgba(46, 92, 58, 0.5);
  --scene-b: rgba(18, 48, 28, 0.35);
  --stroke: rgba(180, 220, 160, 0.28);
}

.stage[data-scene="ocean"] {
  --scene-glow: rgba(48, 191, 234, 0.2);
  --scene-a: rgba(20, 90, 120, 0.45);
  --scene-b: rgba(12, 40, 72, 0.4);
  --stroke: rgba(140, 210, 230, 0.3);
}

.stage[data-scene="space"] {
  --scene-glow: rgba(140, 130, 220, 0.22);
  --scene-a: rgba(50, 48, 110, 0.45);
  --scene-b: rgba(20, 16, 48, 0.4);
  --stroke: rgba(180, 170, 255, 0.3);
}

.desktop {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(9, 13, 24, 0.04), rgba(7, 10, 18, 0.2)),
    url("assets/macos-classic-wallpaper.svg") center 42% / cover no-repeat;
  pointer-events: none;
  transition: background 280ms var(--ease);
}

.desktop::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(6, 10, 20, 0.18), transparent 28% 72%, rgba(6, 10, 20, 0.18));
  opacity: 0.55;
}

.desktop-file {
  position: absolute;
  z-index: 2;
  bottom: 34px;
  display: grid;
  justify-items: center;
  gap: 5px;
  width: 72px;
  color: rgba(255, 255, 255, 0.94);
  font-size: 10px;
  font-weight: 550;
  line-height: 1.2;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.75);
}

.desktop-file-pdf { left: 7%; }
.desktop-file-note { right: 7%; }

.desktop-file-icon,
.desktop-note-lines {
  width: 42px;
  height: 50px;
  border-radius: 6px;
  box-shadow: 0 8px 18px rgba(6, 8, 18, 0.28);
}

.desktop-file-icon {
  display: grid;
  place-items: end center;
  padding-bottom: 5px;
  background: linear-gradient(145deg, #fff 0 66%, #e9e9ed 66%);
  color: #d4473f;
  font-size: 8px;
  font-weight: 750;
  text-shadow: none;
}

.desktop-note-lines {
  background:
    linear-gradient(#ffd45a, #f0a839),
    repeating-linear-gradient(180deg, transparent 0 9px, rgba(113, 67, 10, 0.18) 9px 10px);
  background-blend-mode: multiply;
}

.drag-path {
  position: absolute;
  z-index: 2;
  left: 15%;
  top: 46%;
  width: 26%;
  height: 1px;
  border-top: 1px dashed rgba(255, 255, 255, 0.42);
  transform: rotate(-18deg);
  transform-origin: left center;
  opacity: 0.55;
}

.drag-preview {
  position: absolute;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 7px 9px;
  color: #fff;
  background: rgba(28, 30, 40, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.28);
  border-radius: 9px;
  box-shadow: 0 12px 28px rgba(3, 6, 16, 0.34), inset 0 1px rgba(255, 255, 255, 0.14);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  backdrop-filter: blur(16px) saturate(1.2);
  font-size: 10px;
  font-weight: 600;
  white-space: nowrap;
  pointer-events: none;
}

.drag-preview i {
  position: absolute;
  right: -5px;
  bottom: -5px;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: #36c267;
  border: 2px solid rgba(255, 255, 255, 0.9);
}

.drag-preview i::before,
.drag-preview i::after {
  content: "";
  position: absolute;
  left: 3px;
  top: 5px;
  width: 5px;
  height: 1.5px;
  border-radius: 2px;
  background: #fff;
}

.drag-preview i::after { transform: rotate(90deg); }

.drag-file-badge {
  display: grid;
  place-items: center;
  width: 24px;
  height: 28px;
  border-radius: 4px;
  background: #f4f2ee;
  color: #d4473f;
  font-size: 6px;
  font-weight: 800;
}

.drag-preview-file {
  left: 13%;
  top: 60%;
  animation: drag-file-to-island 7s var(--ease) infinite;
}

.drag-preview-text {
  right: 10%;
  top: 64%;
  opacity: 0;
  animation: drag-text-to-island 7s var(--ease) infinite;
}

@keyframes drag-file-to-island {
  0%, 7% { opacity: 0; transform: translate3d(0, 12px, 0) scale(0.96); }
  12%, 28% { opacity: 1; transform: translate3d(0, 0, 0) scale(1); }
  46% { opacity: 1; transform: translate3d(clamp(120px, 28vw, 310px), -125px, 0) scale(1.04); }
  52%, 100% { opacity: 0; transform: translate3d(clamp(120px, 28vw, 310px), -125px, 0) scale(0.82); }
}

@keyframes drag-text-to-island {
  0%, 50% { opacity: 0; transform: translate3d(0, 12px, 0) scale(0.96); }
  56%, 70% { opacity: 1; transform: translate3d(0, 0, 0) scale(1); }
  88% { opacity: 1; transform: translate3d(clamp(-310px, -28vw, -120px), -125px, 0) scale(1.04); }
  94%, 100% { opacity: 0; transform: translate3d(clamp(-310px, -28vw, -120px), -125px, 0) scale(0.82); }
}

.menubar {
  position: relative;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 28px;
  padding: 0 14px;
  font-size: 12px;
  font-weight: 510;
  color: rgba(255, 255, 255, 0.9);
  background: linear-gradient(180deg, rgba(22, 22, 26, 0.55), rgba(12, 12, 16, 0.35));
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  backdrop-filter: blur(18px) saturate(1.3);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.mb-left,
.mb-right {
  display: flex;
  align-items: center;
  gap: 14px;
}

.mb-left span:first-child {
  font-weight: 600;
}

.mb-extra,
.mb-hide {
  color: rgba(255, 255, 255, 0.55);
}

.island-wrap {
  position: relative;
  z-index: 5;
  width: min(560px, 92%);
  margin: -1px auto 0;
  aspect-ratio: 560 / 152;
}

.drop-cue {
  position: absolute;
  z-index: 14;
  left: 50%;
  top: 25%;
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 9px;
  color: #fff;
  background: rgba(16, 17, 24, 0.82);
  border: 1px solid rgba(255, 255, 255, 0.32);
  border-radius: 999px;
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.28);
  font-size: 9px;
  font-weight: 650;
  letter-spacing: 0.01em;
  opacity: 0;
  transform: translate(-50%, -4px) scale(0.94);
  animation: drop-cue 7s ease-in-out infinite;
  pointer-events: none;
}

.drop-cue svg { width: 13px; height: 13px; }

@keyframes drop-cue {
  0%, 31%, 54%, 73%, 96%, 100% { opacity: 0; transform: translate(-50%, -4px) scale(0.94); }
  37%, 49%, 79%, 91% { opacity: 1; transform: translate(-50%, 0) scale(1); }
}

.island {
  position: absolute;
  inset: 0;
  filter: drop-shadow(0 22px 36px rgba(0, 0, 0, 0.5));
}

.island-clip {
  position: absolute;
  inset: 0;
  overflow: hidden;
  -webkit-mask: url("assets/island-mask.svg") center / 100% 100% no-repeat;
  mask: url("assets/island-mask.svg") center / 100% 100% no-repeat;
}

.island-outline {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
  z-index: 12;
}

.skin-bg,
.skin-deco,
.skin-glass,
.skin-fg,
.skin-fx {
  position: absolute;
  inset: -8%;
  pointer-events: none;
}

.skin-bg {
  z-index: 0;
  background: #0a0a0e center / cover no-repeat;
  transform: translate3d(calc(var(--px) * 6px), calc(var(--py) * 2.5px), 0) scale(1.08);
  transition: transform 280ms ease-out, opacity 280ms var(--ease);
}

.skin-deco { z-index: 1; inset: 0; }
.skin-glass {
  z-index: 2;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.1), transparent 42%),
    linear-gradient(180deg, rgba(18, 17, 23, 0.28), rgba(7, 7, 11, 0.42));
}

.skin-fg {
  z-index: 4;
  background: center / cover no-repeat;
  transform: translate3d(calc(var(--px) * 10px), calc(var(--py) * 4px), 0);
  transition: transform 280ms ease-out, opacity 280ms var(--ease);
}

.skin-fx { z-index: 6; inset: 0; overflow: hidden; }

.constellation,
.ripples { display: none; width: 100%; height: 100%; }

.stage[data-scene="forest"] .skin-bg {
  background-image: url("assets/scenes/forest-bg.jpg");
}
.stage[data-scene="forest"] .skin-fg {
  background-image: url("assets/scenes/forest-fg.png");
}
.stage[data-scene="forest"] .skin-glass {
  background: linear-gradient(180deg, rgba(16, 32, 24, 0.18), rgba(7, 17, 12, 0.38));
}

.stage[data-scene="ocean"] .skin-bg {
  background-image: url("assets/scenes/ocean-bg.jpg");
}
.stage[data-scene="ocean"] .skin-fg {
  background-image: url("assets/scenes/ocean-fg.png");
}
.stage[data-scene="ocean"] .skin-glass {
  background: linear-gradient(180deg, rgba(10, 36, 48, 0.2), rgba(6, 16, 24, 0.4));
}

.stage[data-scene="space"] .skin-bg {
  background-image: url("assets/scenes/space-bg.jpg");
}
.stage[data-scene="space"] .skin-fg {
  background-image: url("assets/scenes/space-fg.png");
}
.stage[data-scene="space"] .skin-glass {
  background: linear-gradient(180deg, rgba(16, 14, 40, 0.22), rgba(6, 6, 16, 0.42));
}

.stage[data-scene="constellation"] .constellation { display: block; }
.stage[data-scene="constellation"] .skin-glass {
  background:
    radial-gradient(ellipse 50% 80% at 50% 0%, rgba(70, 72, 140, 0.35), transparent 70%),
    linear-gradient(180deg, rgba(20, 20, 40, 0.55), rgba(8, 8, 18, 0.7));
}

.stage[data-scene="ripple"] .ripples { display: block; }
.stage[data-scene="ripple"] .skin-glass {
  background: linear-gradient(180deg, rgba(18, 48, 56, 0.45), rgba(8, 20, 26, 0.62));
}

.ripples {
  background:
    repeating-linear-gradient(
      180deg,
      transparent 0 18px,
      rgba(180, 230, 235, 0.07) 18px 19px
    );
  animation: ripple-drift 12s ease-in-out infinite alternate;
}

@keyframes ripple-drift {
  from { transform: translateX(-8px); }
  to { transform: translateX(8px); }
}

.skin-fx span {
  position: absolute;
  width: 5px;
  height: 3px;
  border-radius: 99px;
  opacity: 0;
}

.stage[data-scene="forest"] .skin-fx span {
  background: #5aa33a;
  animation: leaf-fall 7.2s linear infinite;
}
.stage[data-scene="ocean"] .skin-fx span {
  width: 5px;
  height: 5px;
  border: 1px solid rgba(180, 245, 240, 0.7);
  background: transparent;
  animation: bubble-rise 8s ease-in infinite;
}
.stage[data-scene="space"] .skin-fx span {
  width: 2px;
  height: 2px;
  background: #c8e8ff;
  box-shadow: 0 0 6px rgba(120, 180, 255, 0.8);
  animation: star-twinkle 5.8s ease-in-out infinite;
}

.skin-fx span:nth-child(1) { left: 8%; animation-delay: -0.4s; }
.skin-fx span:nth-child(2) { left: 18%; animation-delay: -1.2s; }
.skin-fx span:nth-child(3) { left: 28%; animation-delay: -2.1s; }
.skin-fx span:nth-child(4) { left: 38%; animation-delay: -0.8s; }
.skin-fx span:nth-child(5) { left: 48%; animation-delay: -3.3s; }
.skin-fx span:nth-child(6) { left: 58%; animation-delay: -1.7s; }
.skin-fx span:nth-child(7) { left: 68%; animation-delay: -4.1s; }
.skin-fx span:nth-child(8) { left: 76%; animation-delay: -2.6s; }
.skin-fx span:nth-child(9) { left: 84%; animation-delay: -0.2s; }
.skin-fx span:nth-child(10) { left: 12%; animation-delay: -5s; }
.skin-fx span:nth-child(11) { left: 91%; animation-delay: -3.8s; }
.skin-fx span:nth-child(12) { left: 42%; animation-delay: -6.2s; }

@keyframes leaf-fall {
  0% { top: -8%; opacity: 0; transform: translateX(0) rotate(0); }
  8% { opacity: 0.85; }
  100% { top: 110%; opacity: 0; transform: translateX(22px) rotate(220deg); }
}

@keyframes bubble-rise {
  0% { top: 110%; opacity: 0; }
  12% { opacity: 0.8; }
  100% { top: 18%; opacity: 0; }
}

@keyframes star-twinkle {
  0%, 100% { opacity: 0.15; top: 30%; }
  40% { opacity: 0.9; }
}

.stage.is-still .skin-bg,
.stage.is-still .skin-fg {
  transform: none;
  transition: none;
}

.stage.is-still .ripples,
.stage.is-still .skin-fx span {
  animation: none;
  opacity: 0.35;
}

.stage.is-still .drag-preview-file {
  left: 50%;
  top: 43%;
  opacity: 1;
  transform: translateX(-50%);
  animation: none;
}

.stage.is-still .drag-preview-text,
.stage.is-still .drag-path {
  display: none;
}

.stage.is-still .drop-cue {
  opacity: 1;
  transform: translate(-50%, 0);
  animation: none;
}

.hw-notch {
  position: absolute;
  z-index: 6;
  top: 0;
  left: 50%;
  width: 32.86%;
  height: 21.7%;
  transform: translateX(-50%);
  background: #050506;
  border-radius: 0 0 11px 11px;
  box-shadow:
    0 1px 0 rgba(255, 255, 255, 0.08),
    inset 0 -1px 0 rgba(255, 255, 255, 0.04);
}

.lens {
  position: absolute;
  left: 22%;
  top: 50%;
  width: 7px;
  height: 7px;
  transform: translateY(-50%);
  border-radius: 50%;
  background: radial-gradient(circle at 35% 32%, #4a5d70, #121820 58%, #000);
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.08);
}

.island-tiles {
  position: absolute;
  z-index: 8;
  left: 5%;
  right: 15%;
  top: 33%;
  display: flex;
  align-items: flex-end;
  gap: 11px;
}

.tile {
  position: relative;
  border-radius: 10px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.05));
  border: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.14);
  color: #fff;
}

.tile-file,
.tile-image {
  width: 72px;
  flex: 0 0 72px;
  height: 82px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 6px 6px;
}

.tile-image {
  padding: 4px;
  overflow: hidden;
}

.tile-icon {
  width: 38px;
  height: 38px;
  border-radius: 7px;
  background: rgba(255, 255, 255, 0.16);
  display: grid;
  place-items: center;
  color: rgba(255, 255, 255, 0.95);
}

.tile-icon svg {
  width: 20px;
  height: 20px;
}

.tile-label {
  margin-top: 6px;
  font-size: 9.5px;
  font-weight: 510;
  letter-spacing: -0.01em;
  color: rgba(255, 255, 255, 0.88);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.pin {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-pin);
  box-shadow: 0 0 0 2px rgba(8, 8, 12, 0.45);
}

.photo {
  width: 100%;
  height: 48px;
  border-radius: 7px;
  background:
    linear-gradient(180deg, transparent 45%, rgba(0, 0, 0, 0.45)),
    linear-gradient(135deg, #ffb28f 0%, #e07a6a 38%, #6a7c98 72%, #243044 100%);
}

.tile-text {
  flex: 1 1 auto;
  min-width: 0;
  max-width: 164px;
  min-height: 45px;
  padding: 10px 12px;
  font-size: 12px;
  font-weight: 510;
  line-height: 1.3;
  color: rgba(255, 255, 255, 0.92);
}

.pet {
  position: absolute;
  z-index: 7;
  right: 1.5%;
  top: 40%;
  width: 62px;
  height: 62px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  filter: drop-shadow(0 0 10px rgba(155, 199, 255, 0.28));
}

.pet:focus-visible {
  box-shadow: var(--focus);
  border-radius: 12px;
}

.pet-sprite {
  display: block;
  width: 62px;
  height: 62px;
  background-repeat: no-repeat;
  background-position: 0 0;
  background-image: url("assets/pet/idle.png");
  background-size: 2852px 62px;
}

/* —— Scene picker (on paper, below the plate) —— */
.scene-switch {
  margin-top: var(--space-md);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.scene-caption {
  margin: 0;
  color: var(--color-muted-foreground);
  font-size: 13px;
  font-family: ui-monospace, "SF Mono", "JetBrains Mono", "Menlo", monospace;
  letter-spacing: 0.01em;
  min-height: 1.5em;
}

.scene-caption::before {
  content: "▸ ";
  color: var(--color-accent);
}

.scene-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.scene-tabs {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 2px;
  padding: 3px;
  border-radius: 10px;
  background: var(--color-muted);
  border: 1px solid var(--color-border);
}

.scene-tabs button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 0;
  background: transparent;
  color: var(--color-muted-foreground);
  font-size: 13px;
  font-weight: 510;
  padding: 7px 11px;
  min-height: 34px;
  border-radius: 7px;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.scene-tabs button:hover {
  color: var(--color-foreground);
}

.scene-tabs button[aria-selected="true"] {
  background: var(--color-card);
  color: var(--color-foreground);
  box-shadow: var(--shadow-sm);
}

.btn-ghost {
  padding: 8px 14px;
  min-height: 36px;
  background: transparent;
  color: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  cursor: pointer;
}

.btn-ghost:hover {
  color: var(--color-foreground);
  background: var(--color-muted);
}

.btn-ghost[aria-pressed="true"] {
  color: var(--color-foreground);
  background: var(--color-muted);
}

.swatch {
  width: 18px;
  height: 8px;
  border-radius: 99px;
  border: 1px solid var(--color-border);
}

.swatch-clear { background: linear-gradient(90deg, #3a3644, #121117); }
.swatch-constellation { background: linear-gradient(90deg, #6b6fd0, #1a1b3a); }
.swatch-ripple { background: linear-gradient(90deg, #3aa0b0, #0d2a32); }
.swatch-forest { background: linear-gradient(90deg, #2f6a3a, #16341d); }
.swatch-ocean { background: linear-gradient(90deg, #1c7a96, #0a2a40); }
.swatch-space { background: linear-gradient(90deg, #3a3d72, #121428); }

/* —— Sections —— */
.page {
  max-width: var(--page);
  margin: 0 auto;
  padding: 0 24px;
}

section.block {
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--color-border);
}

.block h2 {
  margin: 0 0 var(--space-sm);
  max-width: 22ch;
  font-family: var(--font-serif);
  font-size: clamp(1.6rem, 2.8vw, 2.3rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.15;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: var(--space-2xl) var(--space-3xl);
  align-items: center;
}

.split .copy {
  min-width: 0;
}

.split .copy .lede {
  margin-top: var(--space-md);
}

/* Loop — numbered editorial items on hairlines */
.loop-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.loop-card {
  padding: var(--space-xl) var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.loop-card + .loop-card {
  border-left: 1px solid var(--color-border);
}

.loop-index {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-accent);
}

.loop-icon {
  width: 26px;
  height: 26px;
  margin: 18px 0 12px;
  color: var(--color-foreground);
}

.loop-card h3 {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.loop-card p {
  margin: 0;
  font-size: 15px;
  color: var(--color-muted-foreground);
}

/* Library window mock */
.window {
  width: min(100%, 360px);
  margin: 0 auto;
  border-radius: 12px;
  background: linear-gradient(180deg, #f6f4ef, #eceae3);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md);
  overflow: hidden;
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 38px;
  padding: 0 12px;
  border-bottom: 1px solid var(--color-border);
}

.traffic {
  display: flex;
  gap: 6px;
}

.traffic i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.traffic i:nth-child(1) { background: #ff5f57; }
.traffic i:nth-child(2) { background: #febc2e; }
.traffic i:nth-child(3) { background: #28c840; }

.window-bar strong {
  flex: 1;
  font-size: 12px;
  font-weight: 590;
  text-align: center;
  color: var(--color-muted-foreground);
  padding-right: 42px;
}

.rows {
  padding: 6px 0 8px;
  background: var(--color-card);
}

.row {
  display: grid;
  grid-template-columns: 16px 1fr auto;
  gap: 10px;
  align-items: center;
  padding: 9px 14px;
  font-size: 13px;
  color: var(--color-foreground);
}

.row + .row {
  border-top: 1px solid var(--color-border);
}

.row .kind {
  color: var(--color-muted-foreground);
  font-size: 11px;
}

.row .mark {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-pin);
}

.row .mark.mute {
  background: rgba(20, 18, 16, 0.2);
}

/* Quiet facts */
.facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.fact {
  padding: var(--space-lg);
  border-radius: var(--radius);
  background: var(--color-card);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.fact-icon {
  width: 26px;
  height: 26px;
  margin-bottom: 14px;
  color: var(--color-accent);
}

.fact strong {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 700;
}

.fact p {
  margin: 0;
  font-size: 15px;
  color: var(--color-muted-foreground);
}

/* CTA band */
.download {
  margin-top: var(--space-3xl);
  padding: var(--space-3xl) 24px calc(var(--space-3xl) + 8px);
  text-align: center;
  background: var(--color-background-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.download h2 {
  margin: 0 auto var(--space-sm);
  max-width: 20ch;
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 3.2vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.1;
}

.download .lede {
  margin: 0 auto var(--space-lg);
}

.download .hero-actions {
  justify-content: center;
}

/* Footer */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
  max-width: var(--page);
  margin: 0 auto;
  padding: 22px 24px 32px;
  color: var(--color-muted-foreground);
  font-size: 13px;
}

.site-footer nav {
  display: flex;
  gap: 18px;
}

.site-footer a {
  color: var(--color-muted-foreground);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}

.site-footer a:hover {
  color: var(--color-accent);
}

/* Inner pages */
.doc {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2.8rem 24px 4.5rem;
}

.doc h1 {
  margin: 0 0 0.4rem;
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.doc .updated {
  margin: 0 0 1.8rem;
  color: var(--color-muted-foreground);
  font-size: 13px;
}

.doc h2 {
  margin: 1.8rem 0 0.45rem;
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
}

.doc p,
.doc li {
  color: var(--color-secondary);
}

.doc ul {
  padding-left: 1.15rem;
}

.doc a {
  color: var(--color-accent);
}

.mail {
  display: inline-block;
  margin-top: 0.4rem;
  font-weight: 600;
  color: var(--color-foreground);
  text-decoration: none;
  border-bottom: 2px solid var(--color-accent);
}

.mail:hover {
  color: var(--color-accent);
}

/* Responsive */
@media (max-width: 860px) {
  .split {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .split .copy {
    order: -1;
  }

  .facts,
  .loop-grid {
    grid-template-columns: 1fr;
  }

  .loop-card + .loop-card {
    border-left: 0;
  }

  .mb-extra,
  .mb-hide {
    display: none;
  }
}

@media (max-width: 640px) {
  body {
    font-size: 16px;
  }

  .site-nav {
    padding: 8px 16px;
  }

  .wordmark span {
    font-size: 16px;
  }

  .btn-nav {
    display: none;
  }

  .hero {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-lg);
  }

  .hero h1 {
    font-size: 2.4rem;
  }

  .hero .lede,
  .lede {
    font-size: 17px;
  }

  .stage {
    min-height: 16rem;
  }

  .desktop-file {
    bottom: 22px;
    transform: scale(0.84);
  }

  .desktop-file-pdf { left: 2%; }
  .desktop-file-note { right: 2%; }

  .drag-preview {
    font-size: 8px;
    padding: 5px 7px;
  }

  .drag-preview-file { left: 5%; }
  .drag-preview-text { right: 3%; }

  .drag-path {
    left: 13%;
    width: 29%;
  }

  .drop-cue {
    top: 23%;
    padding: 4px 7px;
    font-size: 7px;
  }

  .scene-switch {
    justify-content: center;
    text-align: center;
  }

  .scene-toolbar {
    justify-content: center;
  }

  .island-tiles {
    gap: 7px;
    top: 38%;
  }

  .tile-file,
  .tile-image {
    width: 54px;
    flex-basis: 54px;
    height: 64px;
    padding: 6px 4px 5px;
  }

  .tile-icon {
    width: 30px;
    height: 30px;
  }

  .tile-text {
    font-size: 10px;
    padding: 6px 8px;
  }

  .pet,
  .pet-sprite {
    width: 56px;
    height: 56px;
  }

  section.block,
  .download {
    padding-top: var(--space-2xl);
    padding-bottom: var(--space-2xl);
  }

  .mb-app {
    display: none;
  }

  .menubar {
    padding: 0 10px;
    font-size: 11px;
  }

  .mb-left {
    gap: 10px;
  }

  .scene-tabs button {
    padding: 7px 9px;
    font-size: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .desktop {
    transition: none;
  }

  .ripples,
  .skin-fx span {
    animation: none !important;
    opacity: 0.28;
  }

  .drag-preview-file {
    left: 50%;
    top: 43%;
    opacity: 1;
    transform: translateX(-50%);
  }

  .drag-preview-text,
  .drag-path {
    display: none;
  }

  .drop-cue {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}