/* FastPin site. Flat brand palette (see public/README.md): no gradients. */
:root {
  --ink: #151B1C;
  --mint: #19D98A;
  --mint-ink: #0F7A4C;
  --mint-soft: #DDF6E9;
  --stone: #E9EDEB;
  --paper: #FFFFFF;
  --bg: #F6F8F7;
  --line: #D5DDD8;
  --muted: #56625D;
  --text: #151B1C;
  --surface: #FFFFFF;
  --surface-2: #EEF2F0;
  --shadow: 0 1px 2px rgba(21, 27, 28, .06), 0 12px 32px rgba(21, 27, 28, .10);
  --radius: 18px;
  --font: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", system-ui, "PingFang TC", "Microsoft JhengHei", sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}
/* Each Chinese script uses its own system font so glyph shapes match the page. */
:root:lang(zh-Hant) { --font: -apple-system, BlinkMacSystemFont, "PingFang TC", "Segoe UI", "Microsoft JhengHei", system-ui, sans-serif; }
:root:lang(zh-Hans) { --font: -apple-system, BlinkMacSystemFont, "PingFang SC", "Segoe UI", "Microsoft YaHei", system-ui, sans-serif; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0E1213; --surface: #151B1C; --surface-2: #1C2426; --line: #2A3436;
    --text: #E9EDEB; --muted: #9AA6A0; --mint-ink: #19D98A; --mint-soft: #133B2A;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px rgba(0, 0, 0, .45);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0E1213; --surface: #151B1C; --surface-2: #1C2426; --line: #2A3436;
  --text: #E9EDEB; --muted: #9AA6A0; --mint-ink: #19D98A; --mint-soft: #133B2A;
  --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 12px 32px rgba(0, 0, 0, .45);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.55 var(--font); -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; }
h1, h2, h3 { margin: 0; letter-spacing: -0.025em; line-height: 1.08; }
p { margin: 0; }
code { font: .86em var(--mono); background: var(--surface-2); padding: .1em .35em; border-radius: 5px; word-break: break-all; }
.wrap { width: min(1120px, 100% - 32px); margin-inline: auto; }
.skip { position: absolute; left: -999px; }
.skip:focus { left: 16px; top: 16px; z-index: 10; background: var(--surface); padding: 8px 12px; border-radius: 8px; }
:focus-visible { outline: 2px solid var(--mint); outline-offset: 3px; border-radius: 6px; }

kbd {
  display: inline-flex; align-items: center; justify-content: center; min-width: 1.9em; height: 1.75em; padding: 0 .45em;
  font: 600 .78em var(--font); color: var(--text); background: var(--surface);
  border: 1px solid var(--line); border-bottom-width: 2px; border-radius: 6px; vertical-align: .1em;
}

/* Buttons */
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 46px; padding: 0 22px;
  border-radius: 12px; border: 1px solid var(--ink); background: var(--ink); color: #fff;
  font-weight: 600; text-decoration: none; transition: transform .15s ease, background .15s ease;
}
.button:hover { transform: translateY(-1px); background: #232c2e; }
.button-ghost { background: transparent; color: var(--text); border-color: var(--line); }
.button-ghost:hover { background: var(--surface); }
.button-small { min-height: 36px; padding: 0 14px; font-size: 14px; border-radius: 10px; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .button:not(.button-ghost) { background: var(--mint); border-color: var(--mint); color: var(--ink); }
}
:root[data-theme="dark"] .button:not(.button-ghost) { background: var(--mint); border-color: var(--mint); color: var(--ink); }

/* Navigation */
.nav { position: sticky; top: 0; z-index: 5; background: color-mix(in srgb, var(--bg) 86%, transparent); backdrop-filter: saturate(1.4) blur(12px); border-bottom: 1px solid transparent; }
.nav.scrolled { border-bottom-color: var(--line); }
.nav-row { display: flex; align-items: center; gap: 24px; height: 64px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 700; font-size: 17px; text-decoration: none; letter-spacing: -0.01em; }
.brand img { border-radius: 8px; }
.brand-small { font-size: 14px; gap: 8px; }
.nav-links { display: flex; gap: 22px; margin-left: auto; font-size: 14px; }
.nav-links a { text-decoration: none; color: var(--muted); }
.nav-links a:hover { color: var(--text); }
.langs { display: flex; gap: 12px; font-size: 14px; }
.langs a { color: var(--muted); text-decoration: none; }
.langs a:hover { color: var(--text); }
.langs [aria-current] { color: var(--text); font-weight: 600; }

/* Chinese: no negative tracking on CJK headings, a little more line height. */
:lang(zh) h1, :lang(zh) h2, :lang(zh) h3 { letter-spacing: 0; line-height: 1.2; }
body:lang(zh) { line-height: 1.7; }
.hero h1:lang(zh) { font-size: clamp(34px, 9vw, 56px); }

/* Hero */
.hero { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; padding: 72px 0 56px; }
.eyebrow { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; color: var(--mint-ink); letter-spacing: .02em; }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--mint); }
.hero h1 { font-size: clamp(40px, 5.2vw, 58px); margin: 18px 0 20px; font-weight: 750; }
.accent { color: var(--mint-ink); }
.lede { font-size: 19px; color: var(--muted); max-width: 30em; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 32px 0 16px; }
.fineprint { font-size: 13px; color: var(--muted); }

/* Hero demo: a flat desk with a capture that turns into a pin. */
.demo { position: relative; }
.desk { position: relative; aspect-ratio: 5 / 4; background: var(--stone); border-radius: 24px; overflow: hidden; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .desk { background: #1C2426; } }
:root[data-theme="dark"] .desk { background: #1C2426; }
.window { position: absolute; left: 7%; top: 9%; width: 70%; height: 74%; background: #fff; border-radius: 14px; box-shadow: var(--shadow); color: #151B1C; }
.window-bar { display: flex; align-items: center; gap: 6px; height: 34px; padding: 0 12px; border-bottom: 1px solid #E9EDEB; font-size: 11px; color: #77817E; }
.window-bar i { width: 9px; height: 9px; border-radius: 50%; background: #D5DDD8; }
.window-bar span { margin-left: 8px; }
.window-body { padding: 18px 20px; display: grid; gap: 10px; }
.doc-title { font-weight: 700; font-size: clamp(13px, 1.5vw, 17px); }
.doc-line { height: 7px; border-radius: 4px; background: #E9EDEB; }
.w80 { width: 80%; } .w70 { width: 70%; } .w60 { width: 60%; } .w40 { width: 40%; }
.chart, .pin-chart { display: flex; align-items: flex-end; gap: 8%; height: 34%; min-height: 70px; padding: 10px 6%; background: #F4F7F5; border-radius: 10px; }
.chart b, .pin-chart b { flex: 1; height: var(--h); background: #B6C1BB; border-radius: 4px 4px 2px 2px; }
.chart b:nth-child(4), .pin-chart b:nth-child(4) { background: var(--mint); }

.selection { position: absolute; left: 6%; top: 30%; width: 88%; height: 40%; border: 1.5px solid var(--mint); border-radius: 4px; box-shadow: 0 0 0 9999px rgba(21, 27, 28, .16); animation: select 7s ease-in-out infinite; }
.handle { position: absolute; width: 8px; height: 8px; background: #fff; border: 1.5px solid var(--mint); border-radius: 2px; }
.tl { left: -5px; top: -5px; } .tr { right: -5px; top: -5px; } .bl { left: -5px; bottom: -5px; } .br { right: -5px; bottom: -5px; }
.size { position: absolute; left: 0; top: -24px; font: 600 10px var(--mono); color: #fff; background: #151B1C; padding: 3px 6px; border-radius: 5px; }
.toolbar { position: absolute; left: 34%; top: 74%; display: flex; gap: 4px; padding: 5px; background: #fff; border-radius: 10px; box-shadow: var(--shadow); animation: tools 7s ease-in-out infinite; }
.tool { display: grid; place-items: center; width: 26px; height: 26px; border-radius: 7px; font-size: 13px; color: #56625D; }
.tool.on { background: var(--mint-soft); color: #0F7A4C; }
.swatch { width: 14px; height: 14px; margin: 6px; border-radius: 50%; background: var(--c, #FF5A65); }

.pin { position: absolute; right: 5%; top: 40%; width: 44%; padding: 10px; background: #fff; border-radius: 12px; box-shadow: var(--shadow); transform: rotate(-2deg); animation: pin 7s ease-in-out infinite; }
.pin-chart { height: auto; aspect-ratio: 2 / 1; min-height: 0; }
.pin-arrow { position: absolute; right: 22%; top: 18%; width: 28%; height: 3px; background: #FF5A65; border-radius: 2px; transform: rotate(-28deg); transform-origin: right; }
.pin-arrow::after { content: ""; position: absolute; right: -2px; top: -4px; border: 5px solid transparent; border-left: 8px solid #FF5A65; }
.pin-badge { position: absolute; left: 10px; top: -11px; display: inline-flex; align-items: center; gap: 6px; padding: 3px 9px; font-size: 10px; font-weight: 700; color: #151B1C; background: #fff; border: 1px solid #D5DDD8; border-radius: 999px; }
.pin-badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: var(--mint); }

.keys-toast { position: absolute; left: 7%; bottom: 6%; display: flex; gap: 5px; animation: keys 7s ease-in-out infinite; }

@keyframes select {
  0%, 6% { width: 0; height: 0; opacity: 0; }
  10% { opacity: 1; width: 0; height: 0; }
  30%, 64% { width: 88%; height: 40%; opacity: 1; }
  72%, 100% { width: 88%; height: 40%; opacity: 0; }
}
@keyframes tools { 0%, 32% { opacity: 0; transform: translateY(6px); } 38%, 64% { opacity: 1; transform: none; } 72%, 100% { opacity: 0; } }
@keyframes pin { 0%, 66% { opacity: 0; transform: translateY(18px) rotate(-2deg) scale(.96); } 76%, 94% { opacity: 1; transform: rotate(-2deg); } 100% { opacity: 0; transform: rotate(-2deg); } }
@keyframes keys { 0%, 2% { opacity: 0; } 4%, 22% { opacity: 1; } 28%, 100% { opacity: 0; } }
@media (prefers-reduced-motion: reduce) {
  .selection, .toolbar, .pin, .keys-toast { animation: none; }
  .keys-toast { opacity: 0; }
}

/* Steps */
.steps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; padding-bottom: 32px; }
.step { display: flex; gap: 14px; padding: 20px; border-top: 1px solid var(--line); }
.step h3 { font-size: 16px; margin-bottom: 4px; }
.step p { font-size: 14px; color: var(--muted); }
.num { flex: none; display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--mint-soft); color: var(--mint-ink); font-weight: 700; font-size: 14px; }

/* Sections */
.section { padding: 88px 0; }
.section-head { max-width: 640px; margin-bottom: 40px; }
.section-head h2 { font-size: clamp(32px, 4.4vw, 46px); margin-top: 10px; font-weight: 720; }
.section-lede { margin-top: 14px; font-size: 18px; color: var(--muted); }
.section-lede a { color: var(--mint-ink); }

/* Bento */
.bento { display: grid; grid-template-columns: repeat(6, 1fr); gap: 16px; }
.tile { position: relative; display: flex; flex-direction: column; justify-content: space-between; gap: 28px; min-height: 260px; padding: 28px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.tile h3 { font-size: 21px; margin-bottom: 8px; }
.tile p { color: var(--muted); font-size: 15px; max-width: 34em; }
.tile-translate { grid-column: span 4; flex-direction: row; align-items: center; }
.tile-translate .tile-text { flex: 1; }
.tile-ocr { grid-column: span 2; }
.tile-color, .tile-markup, .tile-restore { grid-column: span 2; }

.mock-card { flex: none; width: min(300px, 100%); padding: 16px 18px 12px; background: #FFFDF5; border: 1.25px solid #38A87E; border-radius: 16px; box-shadow: var(--shadow); color: #20242B; }
.mock-card-head { display: flex; justify-content: space-between; align-items: center; font-size: 17px; }
.mock-icons { font-size: 12px; letter-spacing: 6px; color: #778291; }
.mock-card p { color: #414956; font-size: 15px; margin: 10px 0 14px; }
.mock-card-foot { display: flex; justify-content: space-between; align-items: center; font-size: 11px; color: #9AA2AD; }
.pill { padding: 3px 9px; border-radius: 7px; background: rgba(70, 80, 95, .08); color: #586270; }

.mock-ocr { position: relative; padding: 18px; background: var(--surface-2); border-radius: 12px; }
.ocr-box { display: grid; gap: 4px; padding: 10px 12px; border: 1.5px solid #287CF4; border-radius: 4px; font: 600 14px var(--font); }
.ocr-box span:last-child { font-weight: 400; color: var(--muted); }
.toast { position: absolute; right: 12px; bottom: -14px; padding: 7px 12px; background: var(--ink); color: #fff; font-size: 12px; font-weight: 600; border-radius: 9px; }

.mock-loupe { display: flex; align-items: center; gap: 16px; }
.loupe { display: grid; grid-template-columns: repeat(7, 1fr); width: 112px; height: 112px; border-radius: 50%; overflow: hidden; border: 3px solid var(--surface); box-shadow: 0 0 0 1px var(--line), var(--shadow); }
.loupe i { display: block; }
.loupe i.center { outline: 2px solid #fff; outline-offset: -2px; position: relative; z-index: 1; }
.chip { display: inline-flex; align-items: center; gap: 8px; padding: 7px 11px; border: 1px solid var(--line); border-radius: 10px; font: 600 13px var(--mono); }
.chip i { width: 14px; height: 14px; border-radius: 4px; background: var(--mint); }

.mock-toolbar { display: inline-flex; align-items: center; gap: 4px; align-self: flex-start; padding: 6px; background: var(--surface); border: 1px solid var(--line); border-radius: 12px; box-shadow: var(--shadow); }
.mock-toolbar .tool { width: 32px; height: 32px; font-size: 15px; color: var(--muted); }
.mock-toolbar .tool.on { color: var(--mint-ink); }
.sep { width: 1px; height: 20px; margin: 0 4px; background: var(--line); }

.mock-restore { display: flex; align-items: center; gap: 14px; padding: 14px; background: var(--surface-2); border-radius: 12px; font-size: 14px; }
.mock-restore strong { display: block; margin-bottom: 6px; }
.thumb { flex: none; width: 76px; height: 52px; border-radius: 8px; background: var(--surface); border: 1px solid var(--line); position: relative; }
.thumb::after { content: ""; position: absolute; inset: 14px 12px; border: 2px solid #FF5A65; border-radius: 3px; }
.keys { display: inline-flex; gap: 4px; }

/* Shortcuts */
.section-dark { background: var(--ink); color: #E9EDEB; --line: #2A3436; --muted: #9AA6A0; --surface: #1C2426; --text: #E9EDEB; --mint-ink: #19D98A; }
.shortcut-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr 1.2fr; gap: 12px; }
.shortcut-list li:not(.featured) { grid-column: 2; }
.shortcut-list li { display: flex; align-items: center; gap: 14px; padding: 18px 20px; border: 1px solid var(--line); border-radius: 14px; }
.shortcut-list .label { flex: 1; font-weight: 600; }
.shortcut-list kbd { font-size: 14px; }
.shortcut-list .featured { grid-column: 1; grid-row: 1 / span 4; flex-direction: column; align-items: flex-start; justify-content: center; gap: 12px; padding: 28px; border-color: var(--mint); }
.shortcut-list .featured .label { flex: none; font-size: 15px; color: var(--mint); }
.shortcut-list .featured .keys kbd { flex-direction: column; align-items: flex-start; justify-content: space-between; width: 92px; height: 72px; padding: 9px 11px; font-size: 15px; font-weight: 500; border-color: var(--mint); border-radius: 12px; border-bottom-width: 3px; }
.shortcut-list .featured .keys kbd b { align-self: flex-end; font-size: 18px; font-weight: 500; }
.shortcut-list .featured h3 { font-size: 28px; }
.shortcut-list .featured .keys { gap: 10px; }
.hint { font-size: 13px; color: var(--muted); }

/* Privacy */
.privacy { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; padding: 64px 0; }
.privacy-item { display: grid; gap: 6px; padding-top: 16px; border-top: 2px solid var(--mint); }
.privacy-item span { font-size: 14px; color: var(--muted); }

/* Downloads */
.downloads { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.download { display: grid; gap: 16px; align-content: start; padding: 28px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.download.recommended { border-color: var(--mint); box-shadow: 0 0 0 1px var(--mint); }
.download-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.download h3 { font-size: 24px; }
.req { font-size: 13px; color: var(--muted); }
.download .button { justify-self: start; }
.download > p { color: var(--muted); font-size: 15px; }
details { border-top: 1px solid var(--line); padding-top: 14px; font-size: 14px; color: var(--muted); }
summary { cursor: pointer; font-weight: 600; color: var(--text); }
details img { margin: 14px 0; border-radius: 12px; background: var(--paper); }
details a { color: var(--mint-ink); }
.install-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }

/* Footer */
.footer { border-top: 1px solid var(--line); padding: 28px 0; font-size: 13px; color: var(--muted); }
.footer-row { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; }
.footer-row .brand { color: var(--text); }
.footer-links { display: flex; gap: 18px; margin-left: auto; }

/* Narrow screens */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding-top: 40px; gap: 40px; }
  .bento { grid-template-columns: 1fr 1fr; }
  .tile-translate { grid-column: span 2; }
  .tile-ocr, .tile-color, .tile-markup, .tile-restore { grid-column: span 1; }
  .privacy { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 640px) {
  .nav-links { display: none; }
  .langs { margin-left: auto; }
  .steps, .downloads, .shortcut-list { grid-template-columns: 1fr; }
  .shortcut-list .featured, .shortcut-list li:not(.featured) { grid-column: auto; grid-row: auto; }
  .bento { grid-template-columns: 1fr; }
  .tile-translate, .tile-ocr, .tile-color, .tile-markup, .tile-restore { grid-column: auto; }
  .tile-translate { flex-direction: column; align-items: stretch; }
  .tile { min-height: 0; padding: 22px; }
  .privacy { grid-template-columns: 1fr; padding: 40px 0; }
  .section { padding: 64px 0; }
  .footer-links { margin-left: 0; }
  .lede { font-size: 17px; }
}