@font-face {
  font-family: 'Quicksand';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('/fonts/quicksand-latin.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Quicksand';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('/fonts/quicksand-latin-ext.woff2') format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF,
    U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020,
    U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'Quicksand';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('/fonts/quicksand-vietnamese.woff2') format('woff2');
  unicode-range: U+0102-0103, U+0110-0111, U+0128-0129, U+0168-0169, U+01A0-01A1,
    U+01AF-01B0, U+0300-0301, U+0303-0304, U+0308-0309, U+0323, U+0329,
    U+1EA0-1EF9, U+20AB;
}

:root {
  color-scheme: light;

  --background: #fcf8ff;
  --surface: #fcf8ff;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f6f1fe;
  --surface-container: #f0ecf9;
  --surface-container-high: #ebe6f3;
  --surface-variant: #e5e0ed;
  --on-surface: #1c1b23;
  --on-surface-variant: #474555;
  --outline: #787586;
  --outline-variant: #c8c4d7;

  --primary: #4833cc;
  --primary-container: #6150e5;
  --on-primary: #ffffff;
  --primary-fixed: #e4dfff;
  --primary-fixed-dim: #c6c0ff;
  --on-primary-fixed: #150066;
  --on-primary-muted: #dcd8ff;

  --secondary: #7c5800;
  --secondary-container: #ffcd70;
  --secondary-fixed: #ffdea7;
  --on-secondary-container: #785500;

  --tertiary: #005c4a;
  --tertiary-container: #007760;
  --tertiary-fixed: #6cfad4;
  --on-tertiary: #ffffff;

  --error-container: #ffdad6;
  --on-error-container: #93000a;

  --inverse-surface: #312f39;
  --inverse-on-surface: #f3effc;

  --brand-violet: #6150e5;
  --brand-violet-deep: #4f41c4;
  --brand-lilac: #a29bfe;
  --brand-gold: #fdcb6e;
  --brand-gold-deep: #f0a93b;
  --brand-coral: #ff7675;
  --brand-sky: #74b9ff;
  --brand-mint: #55e6c1;

  --font-sans: 'Quicksand', 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue',
    Arial, 'Noto Sans', sans-serif;

  --radius-sm: 0.5rem;
  --radius: 0.75rem;
  --radius-lg: 1.25rem;
  --radius-xl: 1.75rem;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2.5rem;
  --space-2xl: 4rem;

  --measure: 68ch;
  --wrap: 1180px;

  --shadow-soft: 0 10px 30px -12px rgba(97, 80, 229, 0.18);
  --shadow-lift: 0 18px 44px -20px rgba(28, 27, 35, 0.28);
}

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

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  margin: 0;
  background: var(--background);
  color: var(--on-surface);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  font-weight: 500;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

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

.ico { inline-size: 1.15em; block-size: 1.15em; flex: none; }

h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  margin-block: 0 var(--space-md);
  text-wrap: balance;
}

h1 { font-size: clamp(2rem, 1.4rem + 3vw, 3rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 1.25rem + 1.7vw, 2rem); }
h3 { font-size: clamp(1.25rem, 1.1rem + 0.7vw, 1.5rem); font-weight: 600; }
h4 { font-size: 1.125rem; font-weight: 700; }

p, ul, ol, table, pre, blockquote { margin-block: 0 var(--space-md); }
p:last-child, ul:last-child, ol:last-child { margin-block-end: 0; }

a { color: var(--primary); text-underline-offset: 0.18em; }
a:hover { color: var(--primary-container); }

:focus-visible {
  outline: 3px solid var(--primary);
  outline-offset: 3px;
  border-radius: 4px;
}

.breakable, a[href^="mailto:"], code { overflow-wrap: anywhere; }

code {
  font-family: ui-monospace, 'Cascadia Mono', 'Consolas', monospace;
  font-size: 0.9em;
  background: var(--surface-container-high);
  padding-inline: 0.35em;
  padding-block: 0.1em;
  border-radius: 4px;
}

pre {
  background: var(--surface-container-high);
  padding: var(--space-md);
  border-radius: var(--radius);
  overflow-x: auto;
}
pre code { background: none; padding: 0; }

hr {
  border: 0;
  border-block-start: 1px solid var(--outline-variant);
  margin-block: var(--space-xl);
}

.wrap {
  inline-size: 100%;
  max-inline-size: var(--wrap);
  margin-inline: auto;
  padding-inline: clamp(1rem, 4vw, 3rem);
}

.section { padding-block: clamp(2.75rem, 7vw, 5.5rem); }
.section--tinted { background: var(--surface-container); }
.section--low { background: var(--surface-container-low); }

.section__head { max-inline-size: 42rem; margin-block-end: var(--space-xl); }
.section__head p {
  font-size: 1.125rem;
  color: var(--on-surface-variant);
}
.section__head--center { margin-inline: auto; text-align: center; }

.skip-link {
  position: absolute;
  inset-block-start: -100%;
  inset-inline-start: var(--space-md);
  z-index: 100;
  background: var(--primary);
  color: var(--on-primary);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  text-decoration: none;
}
.skip-link:focus { inset-block-start: var(--space-sm); color: var(--on-primary); }

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
  backdrop-filter: blur(10px);
  border-block-end: 1px solid var(--outline-variant);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  padding-block: 0.625rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--primary);
  font-weight: 700;
  font-size: 1.25rem;
}
.brand img { inline-size: 2rem; block-size: 2rem; border-radius: 50%; }
.site-footer .brand { color: var(--primary); }

.lang { position: relative; }

.lang__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid var(--outline-variant);
  border-radius: 999px;
  background: var(--surface-container-lowest);
  color: var(--on-surface);
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}
.lang__toggle::-webkit-details-marker { display: none; }
.lang__toggle .ico { inline-size: 1.05rem; block-size: 1.05rem; }
.lang__toggle:hover { border-color: var(--primary); color: var(--primary); }
.lang[open] .lang__toggle { border-color: var(--primary); color: var(--primary); }

.lang__panel {
  position: absolute;
  inset-block-start: calc(100% + 0.5rem);
  inset-inline-end: 0;
  z-index: 50;
  min-inline-size: 13rem;
  max-block-size: min(60vh, 24rem);
  overflow-y: auto;
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift);
  padding: var(--space-sm);
}
.lang__panel h2 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--on-surface-variant);
  margin: 0.25rem 0.5rem 0.5rem;
}
.lang__panel ul { list-style: none; margin: 0; padding: 0; }
.lang__panel a {
  display: block;
  padding: 0.5rem 0.6rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--on-surface);
  font-weight: 600;
}
.lang__panel a:hover { background: var(--surface-container); color: var(--primary); }
.lang__panel a[aria-current='page'] {
  background: var(--primary-fixed);
  color: var(--on-primary-fixed);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  font: inherit;
  font-weight: 700;
  text-decoration: none;
  text-align: center;
  min-block-size: 3rem;
}
.btn--primary { background: var(--primary); color: var(--on-primary); }
.btn--primary:hover { background: var(--primary-container); color: var(--on-primary); }

.cta-note {
  margin-block-start: var(--space-md);
  font-size: 0.9375rem;
  color: var(--on-surface-variant);
  max-inline-size: 34rem;
}

.hero { padding-block: clamp(2.5rem, 7vw, 5rem); }
.hero__grid { display: grid; gap: var(--space-xl); align-items: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--secondary-fixed);
  color: var(--on-secondary-container);
  padding: 0.4rem 0.85rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 700;
  margin-block-end: var(--space-md);
}
.hero__lead {
  font-size: clamp(1.0625rem, 1rem + 0.35vw, 1.25rem);
  color: var(--on-surface-variant);
  max-inline-size: 36rem;
  margin-block-end: var(--space-lg);
}
.hero .accent { color: var(--primary); }

.hero__art {
  position: relative;
  border-radius: var(--radius-xl);
  background: linear-gradient(150deg, var(--primary-fixed), var(--surface-container-low) 70%);
  padding: clamp(1.25rem, 5vw, 2.5rem);
  box-shadow: var(--shadow-soft);
  display: grid;
  place-items: center;
}
.hero__art img {
  inline-size: min(100%, 20rem);
  border-radius: 50%;
  box-shadow: var(--shadow-lift);
}

.grid { display: grid; gap: var(--space-lg); }

.card {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  box-shadow: var(--shadow-soft);
}
.card h3 { margin-block-end: 0.5rem; }
.card p { color: var(--on-surface-variant); }

.icon {
  inline-size: 3rem;
  block-size: 3rem;
  border-radius: 999px;
  display: grid;
  place-items: center;
  margin-block-end: var(--space-md);
  flex: none;
}
.icon .ico { inline-size: 1.6rem; block-size: 1.6rem; }
.icon--violet { background: var(--primary-fixed); color: var(--primary); }
.icon--gold { background: var(--secondary-fixed); color: var(--on-secondary-container); }
.icon--coral { background: var(--error-container); color: var(--on-error-container); }
.icon--mint { background: var(--tertiary-fixed); color: var(--tertiary); }

.method {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-xl);
  padding: clamp(1.25rem, 4vw, 2.5rem);
  box-shadow: var(--shadow-soft);
  margin-block-end: var(--space-lg);
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--primary-fixed);
  color: var(--on-primary-fixed);
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 700;
  margin-block-end: var(--space-sm);
}
.method p { color: var(--on-surface-variant); max-inline-size: var(--measure); }

.ticks { list-style: none; padding: 0; margin-block-start: var(--space-md); }
.ticks li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  margin-block-end: 0.6rem;
}
.ticks .ico { inline-size: 1.25rem; block-size: 1.25rem; margin-block-start: 0.2rem; color: var(--tertiary); }

.sync__points { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--space-md); }
.sync__points li {
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-inline-start: 4px solid var(--brand-sky);
  border-start-start-radius: var(--radius);
  border-start-end-radius: var(--radius-lg);
  border-end-end-radius: var(--radius-lg);
  border-end-start-radius: var(--radius);
  padding: var(--space-md) var(--space-lg);
}
.sync__points strong { display: block; margin-block-end: 0.25rem; }
.sync__points p { color: var(--on-surface-variant); margin: 0; }
.sync__link { margin-block-start: var(--space-lg); font-size: 0.9375rem; }

.plans { display: grid; gap: var(--space-lg); align-items: start; }
.plan {
  border-radius: var(--radius-xl);
  padding: clamp(1.25rem, 4vw, 2rem);
  border: 1px solid var(--outline-variant);
  background: var(--surface-container-lowest);
  box-shadow: var(--shadow-soft);
  block-size: 100%;
}
.plan--pro {
  background: linear-gradient(160deg, var(--primary), var(--on-primary-fixed));
  color: var(--on-primary);
  border-color: transparent;
}
.plan--pro h3 { color: var(--on-primary); }
.plan__note { color: var(--on-surface-variant); font-size: 0.9375rem; margin-block-end: var(--space-md); }
.plan--pro .plan__note { color: var(--on-primary-muted); font-weight: 600; }
.plan ul { list-style: none; padding: 0; margin: 0; }
.plan li {
  display: flex;
  align-items: flex-start;
  gap: 0.65rem;
  padding-block: 0.5rem;
  border-block-start: 1px solid var(--outline-variant);
}
.plan--pro li { border-block-start-color: rgba(255, 255, 255, 0.22); }
.plan li:first-child { border-block-start: 0; }
.plan li .ico { inline-size: 1.25rem; block-size: 1.25rem; margin-block-start: 0.25rem; }
.plan--free li .ico { color: var(--tertiary); }
.plan--pro li .ico { color: var(--secondary-container); }

.note {
  margin-block-start: var(--space-lg);
  padding: var(--space-md) var(--space-lg);
  background: var(--secondary-fixed);
  color: var(--on-secondary-container);
  border-radius: var(--radius);
  font-size: 0.9375rem;
}
.note + .note { margin-block-start: var(--space-md); background: var(--surface-container-high); color: var(--on-surface-variant); }

.closing {
  background: linear-gradient(155deg, var(--primary), var(--brand-violet-deep));
  color: var(--on-primary);
  border-radius: var(--radius-xl);
  padding: clamp(1.75rem, 6vw, 3.5rem);
  text-align: center;
  margin-block: clamp(2rem, 6vw, 4rem);
}
.closing h2 { color: var(--on-primary); }
.closing p {
  color: var(--on-primary-muted);
  max-inline-size: 38rem;
  margin-inline: auto;
  margin-block-end: var(--space-lg);
}
.closing .btn--primary { background: var(--on-primary); color: var(--primary); }
.closing .btn--primary:hover { background: var(--primary-fixed); color: var(--on-primary-fixed); }
.closing :focus-visible { outline-color: var(--on-primary); }

.doc { padding-block: clamp(1.5rem, 5vw, 3rem) clamp(2.5rem, 7vw, 4.5rem); }
.doc__back { display: inline-flex; align-items: center; gap: 0.4rem; font-weight: 700; font-size: 0.9375rem; }
.doc__title { margin-block: var(--space-md) var(--space-sm); }
.doc__dates {
  color: var(--on-surface-variant);
  font-size: 0.9375rem;
  margin-block-end: var(--space-lg);
}

.doc__fallback {
  background: var(--secondary-fixed);
  color: var(--on-secondary-container);
  border-radius: var(--radius);
  padding: var(--space-md) var(--space-lg);
  margin-block-end: var(--space-lg);
  font-weight: 600;
}

.toc {
  background: var(--surface-container);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius);
  padding: var(--space-md) var(--space-lg);
  margin-block-end: var(--space-xl);
}
.toc > summary {
  font-weight: 700;
  cursor: pointer;
  list-style: revert;
}
.toc ul { list-style: none; padding: 0; margin-block: var(--space-md) 0; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.toc a {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  background: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--on-surface-variant);
}
.toc a:hover { border-color: var(--primary); color: var(--primary); }

.prose { max-inline-size: var(--measure); }
.prose h2 {
  margin-block-start: var(--space-xl);
  padding-block-end: var(--space-sm);
  border-block-end: 1px solid var(--outline-variant);
  scroll-margin-block-start: 5rem;
}
.prose h3 { margin-block-start: var(--space-lg); scroll-margin-block-start: 5rem; }
.prose h4 { margin-block-start: var(--space-lg); }
.prose ul, .prose ol { padding-inline-start: 1.35rem; }
.prose li { margin-block-end: 0.4rem; }
.prose blockquote.callout {
  margin-inline: 0;
  padding: var(--space-md) var(--space-lg);
  background: var(--error-container);
  color: var(--on-error-container);
  border-inline-start: 4px solid var(--on-error-container);
  border-radius: var(--radius);
}
.prose blockquote.callout strong { color: inherit; }

.table-scroll { overflow-x: auto; margin-block-end: var(--space-lg); }
.prose table { border-collapse: collapse; min-inline-size: 32rem; inline-size: 100%; font-size: 0.9375rem; }
.prose th, .prose td {
  text-align: start;
  vertical-align: top;
  padding: 0.6rem 0.75rem;
  border-block-end: 1px solid var(--outline-variant);
}
.prose thead th { background: var(--surface-container); }

.site-footer {
  background: var(--surface-container);
  border-block-start: 1px solid var(--outline-variant);
  padding-block: var(--space-xl);
}
.site-footer__grid { display: grid; gap: var(--space-lg); }
.site-footer p { color: var(--on-surface-variant); font-size: 0.9375rem; }
.site-footer h2 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--on-surface-variant);
  margin-block-end: var(--space-sm);
}
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 0.4rem; }
.site-footer a { font-weight: 600; }
.footer-langs { display: flex; flex-wrap: wrap; gap: 0.5rem 1rem; }
.footer-langs a[aria-current='page'] { color: var(--on-surface); text-decoration: none; }
.site-footer__legal {
  margin-block-start: var(--space-lg);
  padding-block-start: var(--space-lg);
  border-block-start: 1px solid var(--outline-variant);
}

/* The page invite links open (/get): one card, the code, the two stores. */
.get { padding-block: clamp(1.5rem, 5vw, 3rem) clamp(2.5rem, 7vw, 4.5rem); }
.get [hidden] { display: none !important; }
.get-card {
  inline-size: min(100%, 32rem);
  margin-inline: auto;
  background: var(--surface-container-lowest);
  border: 1.5px solid var(--outline-variant);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-soft);
  padding: clamp(1.25rem, 5vw, 2rem);
  text-align: center;
}
.get-mascot { inline-size: 5.5rem; block-size: 5.5rem; margin: 0 auto var(--space-md); border-radius: 50%; }
.get-card h1 { font-size: clamp(1.6rem, 1.3rem + 1.4vw, 2.1rem); margin-block-end: var(--space-sm); }
.get-lead, .get-note { color: var(--on-surface-variant); }
.get-note { font-size: 0.9375rem; }
.get-code {
  margin-block: var(--space-lg);
  padding: var(--space-md);
  border-radius: var(--radius-lg);
  background: var(--secondary-fixed);
}
.get-code__label { font-weight: 700; margin-block-end: 0; }
.get-code__value {
  font-size: clamp(2rem, 1.6rem + 2vw, 2.6rem);
  font-weight: 700;
  letter-spacing: 0.18em;
  margin-block: var(--space-xs) var(--space-sm);
  color: var(--on-surface);
  -webkit-user-select: all;
  user-select: all;
}
.get-stores { display: grid; gap: var(--space-sm); margin-block: var(--space-lg) var(--space-md); }
.get-soon {
  margin: 0;
  padding: 0.85rem 1.4rem;
  border-radius: var(--radius);
  border: 1.5px dashed var(--outline-variant);
  color: var(--on-surface-variant);
  font-weight: 700;
}

@media (min-width: 40rem) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .plans { grid-template-columns: repeat(2, 1fr); }
  .site-footer__grid { grid-template-columns: 1.4fr 1fr 1fr; }
}

@media (min-width: 56rem) {
  .hero__grid { grid-template-columns: 1.15fr 0.85fr; }
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
  .grid--4 { grid-template-columns: repeat(4, 1fr); }
  .method__grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: var(--space-xl); align-items: center; }
  .sync__grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: var(--space-xl); align-items: start; }
  .sync__grid .section__head { margin-block-end: 0; position: sticky; inset-block-start: 5.5rem; }

  .doc__grid { display: grid; grid-template-columns: 16rem minmax(0, 1fr); gap: var(--space-xl); align-items: start; }
  .toc {
    position: sticky;
    inset-block-start: 5.5rem;
    max-block-size: calc(100vh - 8rem);
    overflow-y: auto;
    margin-block-end: 0;
  }
  .toc > summary { display: none; }
  .toc[open] > ul, .toc > ul { display: block; }
  .toc ul { flex-direction: column; margin-block-start: 0; }
  .toc a { display: block; background: none; border: 0; padding: 0.3rem 0; }
  .toc h2 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--on-surface-variant);
    margin-block-end: var(--space-sm);
  }
}

@media (max-width: 55.999rem) {
  .toc h2 { display: none; }
}

@media print {
  .site-header, .toc, .site-footer, .skip-link, .doc__back { display: none; }
  body { background: #fff; }
  .prose { max-inline-size: none; }
}