/* Little Us website. Tokens from design/DESIGN_SYSTEM.md in the app repo: same colours, type sizes,
   spacing, radii and the two shadows. A picture book open on a desk: cream paper, cocoa ink,
   washi tape and stickers. All art is the app's approved drawings; code only moves and layers it. */

@font-face {
  /* jf open huninn (SIL OFL 1.1), cut down to the characters this site uses and renamed as the
     licence asks for a modified copy. See fonts/OFL.txt. */
  font-family: "Little Us Rounded";
  src: url("fonts/little-us-rounded.woff2") format("woff2");
  font-display: swap;
}

:root {
  --paper: #FFF8EE; --paper-deep: #FAEDDD; --card: #FFFDF8; --ink: #4A3A33; --soft-ink: #9A857A;
  --line: #EFDFCD; --cocoa: #4A3A33; --rose: #EC8698; --blush: #F7B3BD; --peach: #FFCFAE;
  --butter: #FFE39B; --sage: #C5DDB9; --sky: #BFE0F4; --lavender: #DCCDF4;
  --shadow-paper: 0 3px 0 rgba(74, 58, 51, .08), 0 8px 14px rgba(74, 58, 51, .06);
  --shadow-float: 0 6px 16px rgba(74, 58, 51, .12);
  --display: 44px; --title: 26px; --headline: 18px; --body: 16px; --subhead: 14px; --caption: 12px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #221B19; --paper-deep: #2B2220; --card: #2F2623; --ink: #F6EBE2; --soft-ink: #BDA99D; --line: #40332E;
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #221B19; --paper-deep: #2B2220; --card: #2F2623; --ink: #F6EBE2; --soft-ink: #BDA99D; --line: #40332E;
  color-scheme: dark;
}

/* One language at a time once the script has picked it; both without JavaScript. */
html[data-lang="zh"] [data-l="en"], html[data-lang="en"] [data-l="zh"] { display: none !important; }

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; color: var(--ink); overflow-x: hidden;
  /* The app's paper (StoryBackground): cream with a faint dot grid, like a journal. */
  background-color: var(--paper);
  background-image: radial-gradient(circle, var(--line) .8px, transparent 1.2px);
  background-size: 22px 22px;
  font: var(--body)/1.75 "Little Us Rounded", "PingFang TC", "Noto Sans TC", -apple-system, system-ui, sans-serif;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: underline; text-decoration-color: var(--rose); text-decoration-thickness: 2px; text-underline-offset: 3px; }
a:hover { color: var(--rose); }
h1, h2, h3 { font-weight: 400; line-height: 1.35; margin: 0; text-wrap: balance; }
p { margin: 0; }
p + p { margin-top: 12px; }
p, li { text-wrap: pretty; }
:focus-visible { outline: 3px solid var(--rose); outline-offset: 3px; border-radius: 10px; }

.wrap { max-width: 960px; margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 720px; }

/* --- top bar --- */
.top { position: sticky; top: 0; z-index: 10; background: var(--paper); border-bottom: 1px solid var(--line); }
.top .wrap { display: flex; align-items: center; gap: 16px; min-height: 64px; flex-wrap: wrap; padding-top: 8px; padding-bottom: 8px; }
.brand { display: flex; align-items: center; gap: 8px; text-decoration: none; font-size: var(--headline); }
.brand:hover { color: var(--ink); }
.brand img { width: 36px; height: 36px; border-radius: 10px; transition: rotate .2s; }
.brand:hover img { rotate: -8deg; }
.links { display: flex; gap: 4px; margin-left: auto; overflow-x: auto; scrollbar-width: none; }
.links a { text-decoration: none; padding: 4px 12px; border-radius: 999px; font-size: var(--subhead); white-space: nowrap; }
.links a:hover { background: var(--paper-deep); color: var(--ink); }
.links a[aria-current="page"] { background: var(--paper-deep); }
.lang-switch { display: flex; background: var(--paper-deep); border-radius: 999px; padding: 4px; }
.lang-switch button {
  font: inherit; font-size: var(--subhead); color: var(--soft-ink); background: none; border: 0; border-radius: 999px;
  padding: 0 12px; min-height: 32px; cursor: pointer;
}
.lang-switch button[aria-pressed="true"] { background: var(--card); color: var(--ink); box-shadow: var(--shadow-paper); }
@media (max-width: 640px) {
  .links { order: 3; width: 100%; margin: 0 -12px; padding: 0 0 4px; }
  .lang-switch { margin-left: auto; }
}

/* --- buttons --- */
.actions { display: flex; flex-wrap: wrap; gap: 12px; justify-content: center; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 52px; padding: 0 24px;
  border-radius: 999px; font: inherit; font-size: var(--body); text-decoration: none; border: 0; cursor: pointer;
  transition: scale .2s;
}
.btn:active { scale: .97; }
/* The one allowed gradient on a control: rose → peach, subtle. */
.btn.primary {
  background-color: var(--rose);
  background-image: linear-gradient(135deg, var(--rose) 30%, color-mix(in srgb, var(--rose) 72%, var(--peach)));
  color: #fff; box-shadow: var(--shadow-float);
}
.btn.primary:hover { color: #fff; filter: brightness(1.03); }
.btn.soft { background: var(--paper-deep); color: var(--ink); }
.btn.soft:hover { color: var(--ink); background: var(--line); }

/* --- paper card --- */
.card { position: relative; background: var(--card); border-radius: 20px; padding: 24px; box-shadow: var(--shadow-paper); }
@media (max-width: 480px) { .card { padding: 20px 16px; } }

/* --- section heading (the app's StoryHeading): a rose squiggle under the title --- */
.heading { position: relative; display: table; padding-bottom: 12px; }
.heading::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 8px; background: var(--rose); opacity: .7;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='8'%3E%3Cpath d='M1.5 4Q6.75 .5 12 4T22.5 4' fill='none' stroke='%23000' stroke-width='2.5' stroke-linecap='round'/%3E%3C/svg%3E") 0 0 / 24px 8px round no-repeat;
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='8'%3E%3Cpath d='M1.5 4Q6.75 .5 12 4T22.5 4' fill='none' stroke='%23000' stroke-width='2.5' stroke-linecap='round'/%3E%3C/svg%3E") 0 0 / 24px 8px round no-repeat;
  -webkit-mask-repeat: round no-repeat; mask-repeat: round no-repeat;
}

/* --- washi tape: one strip, only on pinned paper (cards, screenshots, the code slip) --- */
.tape::before {
  content: ""; position: absolute; z-index: 2; top: -11px; left: var(--tape-x, 50%); width: 78px; height: 22px;
  margin-left: -39px; background: var(--tape, var(--butter)); opacity: .78; rotate: var(--tilt, -4deg); pointer-events: none;
  clip-path: polygon(0 0, 100% 0, calc(100% - 3px) 10%, 100% 20%, calc(100% - 3px) 30%, 100% 40%, calc(100% - 3px) 50%,
    100% 60%, calc(100% - 3px) 70%, 100% 80%, calc(100% - 3px) 90%, 100% 100%, 0 100%, 3px 90%, 0 80%, 3px 70%, 0 60%,
    3px 50%, 0 40%, 3px 30%, 0 20%, 3px 10%);
}
.tape:nth-child(6n+1):is(.features > *, .shots > *) { --tape: var(--blush); --tilt: -4deg; }
.tape:nth-child(6n+2):is(.features > *, .shots > *) { --tape: var(--butter); --tilt: 3deg; }
.tape:nth-child(6n+3):is(.features > *, .shots > *) { --tape: var(--sage); --tilt: -2deg; }
.tape:nth-child(6n+4):is(.features > *, .shots > *) { --tape: var(--sky); --tilt: 4deg; }
.tape:nth-child(6n+5):is(.features > *, .shots > *) { --tape: var(--lavender); --tilt: -3deg; }
.tape:nth-child(6n+6):is(.features > *, .shots > *) { --tape: var(--peach); --tilt: 2deg; }

/* --- spot art as stickers: stuck on a little crooked --- */
.sticker { rotate: var(--lean, -4deg); transition: rotate .25s; }
.features > :nth-child(even) .sticker, .sticker.lean-right { --lean: 4deg; }

/* --- critters: code only moves them. Idle breathe (3.6 s); a hop on hover or tap; waving ones
   rock ±4° now and then. The drawings face left; .flip turns the ones on the left to face right. --- */
.critter { transform-origin: 50% 100%; animation: breathe 3.6s ease-in-out infinite; }
.flip { transform: scaleX(-1); }
.critter.rock { animation: breathe 3.6s ease-in-out infinite, rock 7.5s ease-in-out infinite; }
.critter.hop { animation: hop .95s linear 1; }
@keyframes breathe { 0%, 100% { scale: 1; } 50% { scale: 1.02; } }
@keyframes rock {
  0%, 74%, 100% { rotate: 0deg; }
  78% { rotate: 4deg; } 82% { rotate: -4deg; } 86% { rotate: 4deg; } 90% { rotate: -4deg; } 94% { rotate: 0deg; }
}
@keyframes hop {
  0% { translate: 0 0; scale: 1 1; animation-timing-function: ease-out; }
  13% { translate: 0 0; scale: 1.06 .92; animation-timing-function: cubic-bezier(.2, .7, .4, 1); }
  45% { translate: 0 -15%; scale: .96 1.05; animation-timing-function: cubic-bezier(.6, 0, .9, .5); }
  70% { translate: 0 0; scale: 1.07 .93; animation-timing-function: ease-out; }
  85% { translate: 0 0; scale: .98 1.02; }
  100% { translate: 0 0; scale: 1 1; }
}
.critter:nth-child(2) { animation-delay: -.9s; }
.critter:nth-child(3) { animation-delay: -1.8s; }
.critter:nth-child(4) { animation-delay: -2.7s; }
.critter:nth-child(5) { animation-delay: -1.3s; }
.critter.hop { animation-delay: 0s; }
@media (prefers-reduced-motion: reduce) {
  .critter, .critter.rock, .critter.hop { animation: none; }
  .btn, .sticker, .brand img { transition: none; }
}

/* A critter peeking over the top edge of the card after it: it sits behind the card. */
.peek-host { position: relative; }
.peek-host > .card { z-index: 1; }
.peek { position: absolute; z-index: 0; right: var(--peek-x, 32px); bottom: calc(100% - var(--hide, 40px)); width: var(--peek-w, 96px); }

/* A critter sitting at the end of a section title, on the squiggle. */
/* The title and its critter are centred together. */
.section-title:has(.perch) { left: calc(var(--perch-h, 64px) / -2 - 4px); }
.perch { position: absolute; left: 100%; bottom: 6px; margin-left: 8px; height: var(--perch-h, 64px); width: auto; max-width: none; }

/* --- home hero --- */
.hero { text-align: center; padding: 48px 0 32px; }
.scene { display: flex; justify-content: center; align-items: flex-end; margin: 0 auto 24px; max-width: 600px; }
/* Everything in the scene shares one scale, so each takes its own drawn width. */
.scene > img { width: calc(var(--w) / 1310 * 100%); }
.scene .heart { align-self: center; margin: 0 2% 8%; }
.scene .plant { margin-bottom: 1%; }
.display { font-size: var(--display); line-height: 1.15; }
.hero .tagline { font-size: var(--title); margin-top: 8px; }
.hero .lede { color: var(--soft-ink); margin: 12px auto 24px; max-width: 32em; }
.hero .note { color: var(--soft-ink); font-size: var(--caption); margin-top: 12px; text-wrap: balance; }

/* --- sections --- */
section.block { padding: 32px 0; }
.section-title { font-size: var(--title); text-align: center; margin: 0 auto 32px; }
.section-sub { color: var(--soft-ink); text-align: center; margin: -16px 0 24px; }

.features { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 24px 16px; padding-top: 12px; }
.feature { display: flex; flex-direction: column; gap: 4px; padding-top: 28px; }
.feature > img { width: 64px; height: 64px; object-fit: contain; margin-bottom: 8px; }
.feature h3 { font-size: var(--headline); }
.feature p { color: var(--soft-ink); font-size: var(--subhead); line-height: 1.65; }
.feature .crew { display: flex; align-items: flex-end; gap: 4px; height: 64px; margin-bottom: 8px; }
.feature .crew img { height: 52px; width: auto; }
.feature .crew img:nth-child(2) { height: 60px; }
@media (max-width: 560px) {
  /* Phones: picture beside the words, so eight cards don't run for pages. */
  .feature { display: grid; grid-template-columns: 56px 1fr; column-gap: 16px; row-gap: 4px; align-items: start; padding-top: 24px; }
  .feature > img { width: 56px; height: 56px; grid-row: span 2; margin: 0; }
  .feature .crew { grid-column: 1 / -1; height: 56px; margin: 0 0 4px; }
  .feature .crew img { height: 44px; }
  .feature .crew img:nth-child(2) { height: 52px; }
  .feature .crew ~ h3, .feature .crew ~ p { grid-column: 1 / -1; }
}

/* Screenshots, pinned to the page like photos. */
.shots { display: flex; gap: 20px; overflow-x: auto; scroll-snap-type: x mandatory; padding: 24px 20px 20px; margin: 0 -20px; scrollbar-width: thin; }
.shot { position: relative; flex: 0 0 auto; width: min(212px, 60vw); margin: 0; scroll-snap-align: center; rotate: -1.5deg; }
.shot:nth-child(even) { rotate: 1.5deg; }
.shot img { border-radius: 20px; box-shadow: var(--shadow-paper); }
@media (min-width: 960px) { .shots { justify-content: center; overflow: visible; } }

/* --- questions --- */
.faq { display: grid; gap: 12px; }
.faq details { background: var(--card); border-radius: 20px; box-shadow: var(--shadow-paper); }
.faq summary {
  list-style: none; cursor: pointer; padding: 16px 48px 16px 20px; font-size: var(--headline); position: relative;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; position: absolute; right: 20px; top: 50%; transform: translateY(-50%); color: var(--rose); font-size: var(--title);
}
.faq details[open] summary::after { content: "−"; }
.faq .answer { padding: 0 20px 20px; color: var(--ink); }

.contact-block { padding-top: 80px !important; }
.contact { display: flex; gap: 20px; align-items: center; }
.contact > img { width: 88px; flex: 0 0 auto; }
.contact h2 { font-size: var(--headline); margin-bottom: 4px; }
@media (max-width: 480px) { .contact { flex-direction: column; text-align: center; } }

/* --- document pages (privacy, terms, delete account) --- */
.page-hero { position: relative; display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; padding-top: 48px; margin-bottom: -32px; }
.page-hero .titles { padding-bottom: 56px; }
.page-hero h1 { font-size: var(--title); }
.page-hero .meta { color: var(--soft-ink); font-size: var(--subhead); margin-top: 8px; }
.page-hero .art { display: flex; align-items: flex-end; gap: 4px; flex: 0 0 auto; margin-right: 16px; }
.page-hero .art .critter { width: 128px; }
.page-hero .art .spot { width: 64px; margin-bottom: 48px; }
.page-hero + * { position: relative; z-index: 1; }
@media (max-width: 560px) {
  .page-hero { padding-top: 32px; }
  .page-hero .titles { padding-bottom: 48px; }
  .page-hero .art { margin-right: 4px; }
  .page-hero .art .critter { width: 100px; }
  .page-hero .art .spot { width: 48px; margin-bottom: 44px; }
}

.promises { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-bottom: 32px; }
.promise { background: var(--card); border-radius: 20px; box-shadow: var(--shadow-paper); padding: 16px; text-align: center; font-size: var(--subhead); }
.promise img { width: 56px; height: 56px; object-fit: contain; margin: 0 auto 8px; }
.promise:nth-child(even) img { --lean: 4deg; }
@media (max-width: 560px) { .promises { grid-template-columns: 1fr; } .promise { display: flex; align-items: center; gap: 12px; text-align: left; } .promise img { margin: 0; width: 44px; height: 44px; } }

.doc { --tape-x: 64px; --tape: var(--sky); --tilt: -3deg; }
.doc .intro { font-size: var(--headline); line-height: 1.7; }
.doc section { padding-top: 32px; }
.doc section:first-child { padding-top: 8px; }
.doc h2 { font-size: var(--headline); display: flex; align-items: center; gap: 12px; margin-bottom: 12px; }
.doc h2 img { width: 40px; height: 40px; object-fit: contain; flex: 0 0 auto; rotate: -5deg; }
.doc section:nth-child(even) h2 img { rotate: 5deg; }
.doc ul { margin: 0; padding-left: 20px; }
.doc li { margin: 8px 0; }
.doc li::marker { color: var(--rose); }
.doc strong { font-weight: 400; background: linear-gradient(transparent 62%, var(--butter) 62%); padding: 0 2px; }
:root[data-theme="dark"] .doc strong { background: none; color: var(--butter); }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .doc strong { background: none; color: var(--butter); } }
.doc .aside { color: var(--soft-ink); font-size: var(--subhead); margin-top: 16px; }

.steps { counter-reset: step; list-style: none; padding: 0 !important; margin: 0; display: grid; gap: 12px; }
.steps li { counter-increment: step; display: flex; gap: 12px; align-items: baseline; margin: 0 !important; }
.steps li::before {
  content: counter(step); flex: 0 0 auto; width: 28px; height: 28px; border-radius: 999px; background: var(--butter);
  color: var(--cocoa); display: inline-flex; align-items: center; justify-content: center; font-size: var(--subhead);
}

/* --- footer: the critters stand on its top line --- */
footer.site { border-top: 1px solid var(--line); margin-top: 112px; padding: 32px 0 48px; color: var(--soft-ink); font-size: var(--subhead); }
footer.site .wrap { position: relative; display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; }
footer.site .end { margin-left: auto; }
footer.site a { text-decoration-color: var(--line); }
footer.site a:hover { text-decoration-color: var(--rose); }
.cheer { position: absolute; bottom: calc(100% + 32px); left: 0; right: 0; display: flex; justify-content: center; align-items: flex-end; gap: 4px; pointer-events: none; }
.cheer img { height: 84px; width: auto; pointer-events: auto; }
.sleeper { position: absolute; bottom: calc(100% + 31px); right: 32px; height: 60px; width: auto; }
@media (max-width: 560px) {
  footer.site .end { margin-left: 0; width: 100%; }
  .cheer img { height: 68px; }
  .sleeper { right: 20px; height: 52px; }
}