/* Yaaft website. Layout follows design-system/ui_kits/website (android.com idiom:
   frosted sticky nav, quiet light-gray hero block, pastel feature blocks, navy
   closer, accordion FAQ), rebuilt as plain HTML + CSS with no JavaScript.
   Pages are generated by Scripts/build-site.py, one per language.

   CJK pages use the faces every Mac ships (PingFang, Hiragino, Apple SD Gothic
   Neo); the Noto webfonts in the stacks are only named for other systems and
   are not downloaded. */
/* Google Sans has glyphs for curly quotes, … and the full-width ？ and draws
   them Latin-width, so on Chinese and Japanese pages those characters are routed
   to the system CJK face first, by range. Korean uses Latin punctuation and
   needs no such routing; its Hangul falls through to Apple SD Gothic Neo. */
@font-face { font-family: "Yaaft Punct SC"; font-weight: 400; unicode-range: U+2018-201D, U+2026, U+3000-303F, U+FF00-FFEF; src: local("PingFangSC-Regular"); }
@font-face { font-family: "Yaaft Punct SC"; font-weight: 500; unicode-range: U+2018-201D, U+2026, U+3000-303F, U+FF00-FFEF; src: local("PingFangSC-Medium"); }
@font-face { font-family: "Yaaft Punct SC"; font-weight: 600 700; unicode-range: U+2018-201D, U+2026, U+3000-303F, U+FF00-FFEF; src: local("PingFangSC-Semibold"); }
@font-face { font-family: "Yaaft Punct TC"; font-weight: 400; unicode-range: U+2018-201D, U+2026, U+3000-303F, U+FF00-FFEF; src: local("PingFangTC-Regular"); }
@font-face { font-family: "Yaaft Punct TC"; font-weight: 500; unicode-range: U+2018-201D, U+2026, U+3000-303F, U+FF00-FFEF; src: local("PingFangTC-Medium"); }
@font-face { font-family: "Yaaft Punct TC"; font-weight: 600 700; unicode-range: U+2018-201D, U+2026, U+3000-303F, U+FF00-FFEF; src: local("PingFangTC-Semibold"); }
@font-face { font-family: "Yaaft Punct JP"; font-weight: 400; unicode-range: U+2018-201D, U+2026, U+3000-303F, U+FF00-FFEF; src: local("HiraginoSans-W3"); }
@font-face { font-family: "Yaaft Punct JP"; font-weight: 500; unicode-range: U+2018-201D, U+2026, U+3000-303F, U+FF00-FFEF; src: local("HiraginoSans-W5"); }
@font-face { font-family: "Yaaft Punct JP"; font-weight: 600 700; unicode-range: U+2018-201D, U+2026, U+3000-303F, U+FF00-FFEF; src: local("HiraginoSans-W6"); }
:root:lang(zh-Hans) { --font-sans: "Yaaft Punct SC", "Google Sans Flex", "Google Sans", "PingFang SC", "Noto Sans SC", system-ui, sans-serif; }
:root:lang(zh-Hant) { --font-sans: "Yaaft Punct TC", "Google Sans Flex", "Google Sans", "PingFang TC", "Noto Sans TC", system-ui, sans-serif; }
:root:lang(ja) { --font-sans: "Yaaft Punct JP", "Google Sans Flex", "Google Sans", "Hiragino Sans", "Noto Sans JP", system-ui, sans-serif; }
:root:lang(ko) { --font-sans: "Google Sans Flex", "Google Sans", "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif; }
/* Negative tracking tightens Latin display type; CJK glyphs are already set
   on a full em and just collide. */
:lang(zh) h1, :lang(zh) h2, :lang(zh) h3,
:lang(ja) h1, :lang(ja) h2, :lang(ja) h3,
:lang(ko) h1, :lang(ko) h2, :lang(ko) h3 { letter-spacing: 0; }
/* Vietnamese stacks diacritics and Thai stacks vowels and tone marks above and
   below the line; at the display line-height of 1.0 they clip or collide. */
:lang(vi) h1, :lang(vi) h2, :lang(vi) h3 { line-height: 1.2; }
:lang(th) h1, :lang(th) h2, :lang(th) h3 { line-height: 1.35; letter-spacing: 0; }

html { scroll-behavior: smooth; scroll-padding-top: 88px; }
img { max-width: 100%; height: auto; display: block; }
h1, h2, h3, p { margin: 0; }
/* German, Russian and friends have words wider than a phone at display sizes.
   Break as a last resort rather than push the page sideways; hyphenate by the
   page's lang only on narrow screens (below), since a hyphen in a desktop
   headline that has room to spare just looks broken. */
h1, h2, h3, .compare th, .compare td { overflow-wrap: break-word; }
/* Japanese has no spaces, so plain line breaking splits words mid-way;
   auto-phrase (Chromium) breaks between phrases instead. */
:lang(ja) h1, :lang(ja) h2, :lang(ja) h3 { word-break: auto-phrase; }

.material-symbols-rounded {
  font-family: "Material Symbols Rounded"; font-weight: normal; font-style: normal;
  line-height: 1; letter-spacing: normal; text-transform: none; white-space: nowrap;
  display: inline-block; direction: ltr; -webkit-font-smoothing: antialiased;
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;
}

.wrap { max-width: var(--container-max); margin: 0 auto; padding: 0 var(--gutter); }
.section { padding-top: var(--space-13); }

/* Headings: display sizes on wide screens, scaled down fluidly on phones. */
.display {
  font: var(--type-display-m); letter-spacing: var(--tracking-display-m);
  font-size: clamp(36px, 5vw, 56px);
}
.lead { font: var(--type-body-l); color: var(--text-2); max-width: 640px; margin-top: var(--space-6); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: var(--control-h-xl); padding: 0 32px; border-radius: var(--radius-full);
  font: var(--type-label-l); text-decoration: none; white-space: nowrap; cursor: pointer;
  border: 0; transition: background var(--dur-fast) var(--ease-standard), transform var(--dur-fast) var(--ease-standard);
}
.btn:active { transform: scale(.97); }
.btn .material-symbols-rounded { font-size: 24px; margin-left: -6px; }
.btn-primary { background: var(--gray-950); color: var(--white); }
.btn-primary:hover { background: var(--gray-800); color: var(--white); }
.btn-brand { background: var(--green-500); color: var(--gray-950); }
.btn-brand:hover { background: var(--green-300); color: var(--gray-950); }
.btn-outline { background: transparent; color: var(--text-1); box-shadow: inset 0 0 0 1px var(--border-strong); }
.btn-outline:hover { background: var(--state-hover); color: var(--text-1); }
.btn-s { height: var(--control-h-m); padding: 0 20px; font: var(--type-label-m); }
.btn[aria-disabled="true"] { background: var(--gray-200); color: var(--gray-500); cursor: default; transform: none; }

.badge {
  display: inline-flex; align-items: center; gap: 6px; height: 24px; padding: 0 10px;
  border-radius: var(--radius-full); font: var(--type-label-s); white-space: nowrap;
  background: var(--green-100); color: var(--green-900);
}

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 20;
  background: rgba(255,255,255,.82); backdrop-filter: var(--blur-glass); -webkit-backdrop-filter: var(--blur-glass);
}
.nav .wrap { height: 72px; display: flex; align-items: center; gap: 32px; }
.brand { display: inline-flex; align-items: center; gap: 7px; color: var(--text-1); text-decoration: none; }
.brand img { height: 34px; width: auto; }
.brand span { font: 700 26px/1 var(--font-display); letter-spacing: -.04em; }
.nav-links { display: flex; gap: 4px; flex: 1; }
.nav-links a {
  font: var(--type-label-l); color: var(--text-1); text-decoration: none;
  padding: 10px 16px; border-radius: var(--radius-full);
}
.nav-links a:hover { background: var(--gray-100); color: var(--text-1); }

/* Language menu: a <details> so it opens without JavaScript. */
.lang-menu { position: relative; }
.lang-menu summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 6px;
  font: var(--type-label-l); padding: 8px 12px 8px 14px; border-radius: var(--radius-full);
}
.lang-menu summary::-webkit-details-marker { display: none; }
.lang-menu summary:hover, .lang-menu[open] summary { background: var(--gray-100); }
.lang-menu summary .material-symbols-rounded { font-size: 20px; }
.lang-menu .caret { transition: transform var(--dur-fast) var(--ease-standard); }
.lang-menu[open] .caret { transform: rotate(180deg); }
.lang-menu ul {
  position: absolute; right: 0; top: calc(100% + 8px); z-index: 30; margin: 0; padding: 8px;
  list-style: none; min-width: 240px; max-height: min(70vh, 640px); overflow-y: auto;
  background: var(--white); border-radius: var(--radius-l); box-shadow: var(--shadow-3);
}
.lang-menu li a {
  display: block; padding: 8px 12px; border-radius: var(--radius-s);
  font: var(--type-body-m); color: var(--text-1); text-decoration: none;
}
.lang-menu li a:hover { background: var(--gray-100); color: var(--text-1); }
.lang-menu li a[aria-current="page"] { background: var(--green-50); color: var(--green-900); font-weight: 500; }

/* ---------- Hero ---------- */
.hero { padding-top: var(--space-7); }
.hero-block {
  border-radius: var(--radius-3xl); overflow: hidden;
  /* Quiet light-gray block; green is kept to accents (design-system update). */
  background: var(--gray-50); border: 1px solid var(--border-1);
  padding: clamp(32px, 6vw, 96px) clamp(24px, 6vw, 96px) 0;
}
.hero-copy { max-width: 980px; }
.eyebrow { font: var(--type-eyebrow); color: var(--green-700); margin-bottom: var(--space-6); }
.hero h1 {
  font: var(--type-display-xl); letter-spacing: var(--tracking-display-xl);
  font-size: clamp(44px, 7vw, 104px);
}
.hero p.sub { font: var(--type-body-l); font-size: 20px; color: var(--text-2); max-width: 620px; margin: 28px 0 36px; }
.hero .actions { display: flex; gap: 12px; flex-wrap: wrap; }
.hero .fine { font: var(--type-body-s); color: var(--text-3); margin-top: var(--space-5); }
/* The window rises out of the bottom edge of the green block, which clips it. */
.shot {
  max-width: 1080px; margin: clamp(48px, 6vw, 80px) auto -6%;
  filter: drop-shadow(0 -4px 32px rgba(0,0,0,.10)) drop-shadow(0 1px 4px rgba(0,0,0,.08));
}
.shot img { border-radius: 20px; }

/* ---------- Features ---------- */
.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-5); }
.grid-4 { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: var(--space-5); margin-top: var(--space-5); }
.card { border-radius: var(--radius-2xl); padding: 32px; background: var(--gray-100); color: var(--text-1); }
.card-big { border-radius: var(--radius-3xl); padding: 48px; min-height: 400px; display: flex; flex-direction: column; }
.card-big .spacer { flex: 1; }
.card-big h3 { font: var(--type-display-m); letter-spacing: var(--tracking-display-m); font-size: clamp(40px, 4vw, 56px); }
.card-big p { font: var(--type-body-l); max-width: 460px; margin-top: var(--space-5); }
.card-big .material-symbols-rounded { font-size: 48px; font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 48; }
.tone-sky { background: var(--sky-100); }
.tone-lime { background: var(--lime-100); }
.tone-peach { background: var(--peach-100); }
.tone-lilac { background: var(--lilac-100); }
.tone-mint { background: var(--green-50); }
.card-small h3 { font: var(--type-headline-s); margin-top: 40px; }
.card-small p { font: var(--type-body-m); color: var(--text-2); margin-top: 6px; }
.card-small .material-symbols-rounded { font-size: 32px; color: var(--green-700); font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 32; }
.card-small .stat { font: var(--type-display-m); letter-spacing: var(--tracking-display-m); font-size: 40px; color: var(--green-700); line-height: 1; }

.closer {
  margin-top: var(--space-5); border-radius: var(--radius-3xl); padding: clamp(32px, 5vw, 64px);
  background: var(--navy-900); color: var(--white);
  display: grid; grid-template-columns: 1fr auto; align-items: end; gap: 32px;
}
.closer h3 { font: var(--type-display-l); letter-spacing: var(--tracking-display-l); font-size: clamp(40px, 5vw, 72px); color: var(--green-500); }
.closer p { font: var(--type-body-l); color: var(--navy-100); max-width: 600px; margin-top: var(--space-6); }
.closer code {
  font: var(--type-mono); font-size: 15px; color: var(--white);
  background: rgba(255,255,255,.08); padding: 16px 20px; border-radius: var(--radius-l); white-space: nowrap;
}

/* ---------- Comparison ---------- */
.compare { margin-top: var(--space-10); border-radius: var(--radius-2xl); background: var(--gray-50); overflow: hidden; overflow-x: auto; }
.compare table { width: 100%; border-collapse: collapse; }
.compare th, .compare td { text-align: left; padding: 20px 28px; border-bottom: 1px solid var(--border-1); vertical-align: top; }
.compare tr:last-child > * { border-bottom: 0; }
.compare thead th { font: var(--type-title-m); color: var(--text-2); background: var(--gray-100); }
.compare thead th:last-child { color: var(--green-800); }
.compare tbody th { font: var(--type-title-m); width: 22%; }
.compare td { font: var(--type-body-m); color: var(--text-2); width: 39%; }
.compare td:last-child { color: var(--text-1); }

/* ---------- Steps ---------- */
.steps { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-5); margin-top: var(--space-10); counter-reset: step; }
.step { border-radius: var(--radius-2xl); padding: 32px; background: var(--gray-100); }
.step::before {
  counter-increment: step; content: counter(step);
  display: grid; place-items: center; width: 48px; height: 48px; border-radius: var(--radius-full);
  background: var(--gray-950); color: var(--white); font: 700 20px/1 var(--font-display);
}
.step h3 { font: var(--type-headline-s); margin-top: 32px; }
.step p { font: var(--type-body-m); color: var(--text-2); margin-top: 8px; }

/* ---------- Download ---------- */
.download-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.download-card {
  margin-top: var(--space-10); border-radius: var(--radius-3xl); padding: clamp(32px, 5vw, 56px);
  background: var(--green-50); display: grid; grid-template-columns: auto 1fr auto; gap: 32px; align-items: center;
}
.download-card .app-icon { width: 112px; border-radius: 26px; box-shadow: var(--shadow-1); }
.download-card h3 { font: var(--type-headline-m); display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.download-card p { font: var(--type-body-m); color: var(--text-2); margin-top: 8px; max-width: 560px; }
.requirements { font: var(--type-body-s); color: var(--text-3); margin-top: var(--space-6); }

/* ---------- FAQ ---------- */
.faq { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 2fr); gap: 48px; padding-bottom: var(--space-13); }
.faq details { border-bottom: 1px solid var(--border-2); }
.faq summary {
  list-style: none; cursor: pointer; display: flex; align-items: center; gap: 16px;
  padding: 28px 0; font: var(--type-headline-s);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary span:first-child { flex: 1; }
.faq .toggle {
  width: 40px; height: 40px; flex: none; border-radius: var(--radius-full); display: grid; place-items: center;
  background: var(--gray-100); color: var(--text-1); transition: background var(--dur-base) var(--ease-standard), color var(--dur-base) var(--ease-standard);
}
.faq .toggle::before { content: "add"; font-size: 22px; }
.faq details[open] .toggle { background: var(--gray-950); color: var(--white); }
.faq details[open] .toggle::before { content: "remove"; }
.faq details p { font: var(--type-body-l); color: var(--text-2); max-width: 680px; margin: 0 0 28px; }
.faq details p + p { margin-top: -12px; }

/* ---------- Text pages (privacy) ---------- */
.prose { padding-bottom: var(--space-13); }
.prose .updated { font: var(--type-body-s); color: var(--text-3); margin-top: var(--space-5); }
.prose h2 { font: var(--type-headline-s); margin: var(--space-11) 0 var(--space-5); }
.prose h2 ~ p { font: var(--type-body-l); color: var(--text-2); max-width: 720px; margin: 0 0 var(--space-5); }
.prose a { color: var(--text-link); }

/* ---------- Footer ---------- */
.footer { background: var(--gray-50); }
.footer .top { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; padding-top: 64px; padding-bottom: 40px; }
.footer .top img { width: 72px; border-radius: 16px; box-shadow: var(--shadow-1); }
.footer .about { font: var(--type-body-s); color: var(--text-2); max-width: 420px; margin-top: 16px; }
.footer h4 { font: var(--type-title-s); margin: 0 0 16px; }
.footer .top a { display: block; font: var(--type-body-s); color: var(--text-2); text-decoration: none; padding: 6px 0; }
.footer .top a:hover { color: var(--text-1); }
.footer .languages {
  display: flex; flex-wrap: wrap; gap: 4px 20px; padding-bottom: 24px;
  font: var(--type-body-s);
}
.footer .languages a { color: var(--text-2); text-decoration: none; }
.footer .languages a:hover { color: var(--text-1); }
.footer .languages a[aria-current="page"] { color: var(--text-1); font-weight: 500; }
.footer .bottom {
  display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap;
  padding-top: 20px; padding-bottom: 32px; border-top: 1px solid var(--border-1);
  font: var(--type-body-s); color: var(--text-3);
}
.footer .bottom a { color: var(--text-3); }
.footer .legal { font: var(--type-body-s); font-size: 12px; color: var(--text-3); max-width: 720px; padding-bottom: 32px; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .faq { grid-template-columns: 1fr; gap: 16px; }
}
@media (max-width: 760px) {
  h1, h2, h3, .compare th, .compare td { hyphens: auto; }
  .nav-links { display: none; }
  .nav .wrap { gap: 8px; justify-content: space-between; }
  .brand { margin-right: auto; }
  /* The globe says "language" without the name, which is what pushed the
     Download button off a phone screen in the longer languages. */
  .lang-menu .lang-current { display: none; }
  .lang-menu summary { padding: 8px 10px; }
  .grid-2, .grid-4, .steps { grid-template-columns: 1fr; }
  .card-big { min-height: 300px; padding: 32px; }
  .card-big h3 { font-size: clamp(30px, 9vw, 40px); }
  .closer h3 { font-size: clamp(32px, 10vw, 40px); }
  .closer { grid-template-columns: 1fr; }
  .closer code { white-space: normal; }
  .download-card { grid-template-columns: 1fr; }
  .compare th, .compare td { padding: 14px 16px; }
  .compare tbody th { width: auto; }
  .footer .top { grid-template-columns: 1fr 1fr; }
  .footer .top > div:first-child { grid-column: 1 / -1; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .faq .toggle { transition: none; }
}