@font-face {
  font-family: Manrope;
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url("fonts/manrope-latin.woff2") format("woff2");
}

:root {
  color-scheme: light;
  --paper: #f6f4ef;
  --surface: #fffefa;
  --ink: #282824;
  --muted: #696960;
  --line: #deddd5;
  --blue: #0875cf;
  --blue-hover: #0561ad;
  --soft-blue: #e6eff5;
  --frame: #eae8e1;
  --shadow: 0 24px 64px rgb(45 42 31 / 12%);
  --ease: cubic-bezier(.22, 1, .36, 1);
  --s1: 4px;
  --s2: 8px;
  --s3: 12px;
  --s4: 16px;
  --s6: 24px;
  --s8: 32px;
  --s10: 40px;
  --s12: 48px;
  --s16: 64px;
  --s20: 80px;
  --s24: 96px;
  font-family: Manrope, "PingFang SC", "Microsoft YaHei", sans-serif;
  background: var(--paper);
  color: var(--ink);
  font-synthesis: none;
  scroll-behavior: smooth;
  scroll-padding-top: 112px;
  scrollbar-color: var(--muted) var(--paper);
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --paper: #181818;
  --surface: #1f1f1f;
  --ink: #eeeae2;
  --muted: #b0ada5;
  --line: #3c3c38;
  --blue: #64b8f4;
  --blue-hover: #8acbfa;
  --soft-blue: #272727;
  --frame: #272727;
  --shadow: 0 24px 64px rgb(0 0 0 / 25%);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    color-scheme: dark;
    --paper: #181818; --surface: #1f1f1f; --ink: #eeeae2;
    --muted: #b0ada5; --line: #3c3c38; --blue: #64b8f4;
    --blue-hover: #8acbfa; --soft-blue: #272727; --frame: #272727;
    --shadow: 0 24px 64px rgb(0 0 0 / 25%);
  }
}
*, *::before, *::after { box-sizing: border-box; }
body { margin: 0; font-size: 16px; line-height: 1.7; }
[hidden] { display: none !important; }
::selection { background: var(--blue); color: var(--paper); }
a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 4px; }
button, select { font: inherit; }
a, button, select { -webkit-tap-highlight-color: transparent; }
button, select { cursor: pointer; }
a:focus-visible, button:focus-visible, select:focus-visible {
  outline: 2px solid var(--blue); outline-offset: 4px;
}
img { display: block; max-width: 100%; height: auto; }
svg { flex: none; width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
h1, h2, h3, p, figure { margin: 0; }
h1, h2, h3 { font-weight: 600; text-wrap: balance; }
p { text-wrap: pretty; }
.container { width: min(100% - 96px, 1200px); margin-inline: auto; }
.skip-link { position: fixed; z-index: 20; top: 8px; left: 8px; padding: 8px 16px; background: var(--surface); transform: translateY(-200%); }
.skip-link:focus { transform: translateY(0); }
.site-header { position: sticky; top: 16px; z-index: 10; width: min(100% - 48px, 1200px); margin: 16px auto 0; }
.header-inner { min-height: 64px; display: flex; align-items: center; gap: var(--s8); padding: var(--s2) var(--s6); border: 1px solid var(--line); border-radius: 16px; background: var(--surface); }
.brand { display: inline-flex; align-items: center; gap: var(--s2); font-size: 20px; font-weight: 700; letter-spacing: -.03em; text-decoration: none; }
.brand img { width: 32px; height: 32px; }
.navigation { display: flex; align-items: center; justify-content: flex-end; flex: 1; gap: var(--s8); }
.navigation a, .language-link { color: var(--muted); text-decoration: none; font-size: 14px; font-weight: 500; }
.navigation a:hover, .language-link:hover { color: var(--blue); }
.header-actions { display: flex; align-items: center; gap: var(--s6); }
.language-link { white-space: nowrap; }
.theme-control { position: relative; display: flex; align-items: center; gap: var(--s2); }
.theme-control > svg { width: 16px; height: 16px; color: var(--muted); pointer-events: none; }
.theme-control select { appearance: none; min-height: 40px; padding: 8px 24px 8px 0; border: 0; border-radius: 4px; background: transparent; color: var(--muted); font-size: 12px; }
.theme-control option { background: var(--surface); color: var(--ink); }
.theme-control .select-chevron { position: absolute; right: 0; width: 12px; height: 12px; }
.menu-toggle { display: none; border: 0; background: none; color: var(--ink); padding: var(--s2); min-height: 40px; }
.menu-toggle svg { width: 24px; height: 24px; }
.menu-toggle path { transform-origin: center; transition: transform 500ms var(--ease); }
.menu-open .menu-top { transform: translateY(4px) rotate(45deg); }
.menu-open .menu-bottom { transform: translateY(-4px) rotate(-45deg); }
.hero { padding-top: var(--s24); text-align: center; }
.hero h1 { max-width: 1000px; margin-inline: auto; font-size: 60px; line-height: 1.2; letter-spacing: -.035em; }
.hero h1 span { color: var(--blue); }
.hero-intro { max-width: 680px; margin: var(--s6) auto 0; color: var(--muted); font-size: 18px; line-height: 1.8; }
.hero-actions { margin-top: var(--s8); display: flex; align-items: center; justify-content: center; gap: var(--s6); }
.button { display: inline-flex; align-items: center; justify-content: center; gap: var(--s2); min-height: 48px; padding: 12px 24px; border-radius: 8px; font-size: 16px; line-height: 24px; font-weight: 600; text-decoration: none; transition: transform 300ms var(--ease); }
.button-primary { background: var(--blue); color: #fff; }
:root[data-theme="dark"] .button-primary { color: #181818; }
@media (prefers-color-scheme: dark) { :root:not([data-theme]) .button-primary { color: #181818; } }
.button-primary:hover { background: var(--blue-hover); transform: translateY(-2px); }
.button:active { transform: translateY(1px); }
.text-link { display: inline-flex; align-items: center; gap: var(--s2); color: var(--muted); text-decoration: none; font-size: 14px; }
.text-link:hover { color: var(--blue); }
.text-link svg { width: 16px; height: 16px; }
.download-note { margin-top: var(--s4); color: var(--muted); font-size: 12px; line-height: 20px; }
.hero-visual { margin-top: var(--s12); }
.screenshot { padding: var(--s2); background: var(--frame); border-radius: 12px; }
.hero-visual .screenshot { box-shadow: var(--shadow); }
.screenshot img { width: 100%; border-radius: 4px; background: #1f1f1f; }
figcaption { margin-top: var(--s4); color: var(--muted); font-size: 12px; line-height: 20px; }
.essentials { display: flex; align-items: center; justify-content: center; flex-wrap: wrap; gap: var(--s8); margin-top: var(--s8); padding-bottom: var(--s20); }
.essentials span { display: inline-flex; align-items: center; gap: var(--s2); color: var(--muted); font-size: 14px; }
.essentials svg { color: var(--blue); width: 16px; height: 16px; }
.section-heading { padding-top: var(--s20); border-top: 1px solid var(--line); margin-bottom: var(--s20); }
.section-heading h2 { font-size: 36px; line-height: 1.3; letter-spacing: -.025em; }
.section-heading p { margin-top: var(--s4); color: var(--muted); max-width: 680px; }
.feature { display: grid; grid-template-columns: 320px minmax(0, 1fr); align-items: center; gap: var(--s16); margin-bottom: var(--s24); }
.feature:nth-of-type(even) { grid-template-columns: minmax(0, 1fr) 320px; }
.feature:nth-of-type(even) .feature-copy { grid-column: 2; grid-row: 1; }
.feature:nth-of-type(even) figure { grid-column: 1; grid-row: 1; }
.feature-icon { color: var(--blue); width: 24px; height: 24px; margin-bottom: var(--s6); }
.feature h3 { font-size: 30px; line-height: 1.4; letter-spacing: -.025em; }
.feature-copy > p { margin-top: var(--s4); color: var(--muted); line-height: 1.8; }
.feature-detail { display: flex; flex-wrap: wrap; gap: var(--s2) var(--s4); margin-top: var(--s6); color: var(--muted); font-size: 12px; }
.feature-detail span { display: inline-flex; align-items: center; gap: var(--s2); }
.feature-detail span::before { content: ""; display: inline-block; width: 4px; height: 4px; border-radius: 50%; background: var(--blue); }
.feature figure { min-width: 0; }
.statement-section { padding-block: var(--s24); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.statement { max-width: 1000px; font-size: 48px; line-height: 1.65; font-weight: 500; letter-spacing: -.025em; text-wrap: balance; }
.statement span { transition: opacity 700ms var(--ease); }
.statement .statement-belief { color: var(--blue); }
.statement span.is-pending { opacity: .45; }
.statement-note { margin-top: var(--s8); max-width: 680px; font-size: 14px; color: var(--muted); }
.closing { margin-top: var(--s24); padding: var(--s20) var(--s8); text-align: center; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; }
.closing h2 { font-size: 36px; line-height: 1.4; letter-spacing: -.025em; }
.closing > p { margin-top: var(--s4); color: var(--muted); }
.closing .button { margin-top: var(--s8); }
.closing .download-note { margin-top: var(--s4); }
.site-footer { display: flex; justify-content: space-between; align-items: center; gap: var(--s8); padding-block: var(--s12); }
.footer-brand { display: flex; align-items: center; gap: var(--s4); }
.footer-brand .brand { font-size: 16px; }
.footer-brand .brand img { width: 24px; height: 24px; }
.footer-brand > span { color: var(--muted); font-size: 12px; }
.footer-links { display: flex; gap: var(--s6); }
.footer-links a { color: var(--muted); font-size: 12px; text-decoration: none; }
.footer-links a:hover { color: var(--blue); }
[data-reveal] { transition: transform 700ms var(--ease), opacity 700ms var(--ease); }
[data-reveal].is-pending { opacity: 0; transform: translateY(24px); }
.not-found { max-width: 680px; margin: var(--s24) auto; padding: var(--s8); }
.not-found h1 { margin-top: var(--s12); font-size: 48px; line-height: 1.3; }
.not-found p { margin-block: var(--s6); color: var(--muted); }
html[lang="en"] .hero h1 { font-size: 72px; line-height: 1.1; }
html[lang="en"] .statement { line-height: 1.4; }

@media (max-width: 1000px) {
  .container { width: calc(100% - 64px); }
  .header-inner { gap: var(--s6); padding-inline: var(--s4); }
  .navigation { gap: var(--s4); }
  .header-actions { gap: var(--s4); }
  .feature, .feature:nth-of-type(even) { grid-template-columns: 240px minmax(0, 1fr); gap: var(--s8); }
  .feature:nth-of-type(even) .feature-copy, .feature:nth-of-type(even) figure { grid-column: auto; grid-row: auto; }
  .feature h3 { font-size: 24px; }
  .statement { font-size: 36px; }
}
@media (max-width: 760px) {
  :root { scroll-padding-top: 96px; }
  .container { width: calc(100% - 40px); }
  .site-header { top: 8px; width: calc(100% - 24px); margin-top: 8px; }
  .header-inner { flex-wrap: wrap; gap: var(--s2); padding: 8px 12px; min-height: 64px; }
  .brand { font-size: 18px; }
  .header-actions { margin-left: auto; gap: var(--s3); }
  .language-link { font-size: 12px; }
  .theme-control { gap: var(--s1); }
  .theme-control select { font-size: 12px; padding-right: 16px; }
  .theme-control > svg:first-child { display: none; }
  .navigation { order: 3; flex-basis: 100%; justify-content: center; gap: var(--s6); padding: var(--s3) 0; }
  .enhanced .navigation { display: none; }
  .enhanced .menu-toggle { display: inline-flex; align-items: center; justify-content: center; padding: var(--s2); }
  .menu-open { overflow: hidden; }
  .menu-open .site-header { height: calc(100dvh - 16px); }
  .menu-open .header-inner { height: 100%; align-content: flex-start; background: var(--surface); }
  .menu-open .navigation { display: flex; flex-direction: column; justify-content: flex-start; align-items: flex-start; padding: var(--s16) var(--s6); gap: var(--s8); }
  .menu-open .navigation a { font-size: 24px; color: var(--ink); animation: menu-enter 500ms var(--ease) both; }
  .menu-open .navigation a:nth-child(2) { animation-delay: 60ms; }
  .menu-open .navigation a:nth-child(3) { animation-delay: 120ms; }
  .hero { padding-top: var(--s16); }
  .hero h1, html[lang="en"] .hero h1 { font-size: 36px; line-height: 1.35; letter-spacing: -.03em; }
  html[lang="en"] .hero h1 { font-size: 48px; line-height: 1.15; }
  .hero-intro { font-size: 16px; line-height: 1.8; }
  .hero-actions { flex-direction: column; gap: var(--s4); margin-top: var(--s6); }
  .hero-visual { margin-top: var(--s8); }
  .screenshot { padding: 4px; border-radius: 8px; }
  .screenshot img { border-radius: 4px; }
  .essentials { gap: var(--s4) var(--s6); padding-bottom: var(--s16); margin-top: var(--s6); }
  .essentials span { font-size: 12px; }
  .section-heading { padding-top: var(--s16); margin-bottom: var(--s12); }
  .section-heading h2, .closing h2 { font-size: 30px; }
  .feature, .feature:nth-of-type(even) { grid-template-columns: minmax(0, 1fr); gap: var(--s6); margin-bottom: var(--s16); }
  .feature-copy { max-width: 560px; }
  .feature-icon { margin-bottom: var(--s4); }
  .feature h3 { font-size: 24px; }
  .feature-detail { margin-top: var(--s4); }
  .statement-section { padding-block: var(--s16); }
  .statement { font-size: 30px; line-height: 1.7; }
  .closing { margin-top: var(--s16); padding: var(--s12) var(--s6); }
  .site-footer { flex-direction: column; align-items: flex-start; padding-block: var(--s8); gap: var(--s6); }
  .footer-brand { flex-wrap: wrap; }
}
@keyframes menu-enter { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: translateY(0); } }
@media (prefers-reduced-motion: reduce) {
  :root { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  [data-reveal].is-pending, .statement span.is-pending { opacity: 1; transform: none; }
}