:root {
  --bg: #fcfcfc;
  --bg-panel: #f4f4f3;
  --bg-panel-2: #ffffff;
  --bg-plinth: #efefee;
  --line: #e6e6e4;
  --line-strong: #d8d8d6;
  --accent: #b4536b;
  --accent-dark: #8a3a4f;
  --accent-ring: rgba(180, 83, 107, 0.14);
  --text: #141414;
  --text-muted: #6b6b6b;
  --text-faint: #9a9a9a;
  --ink-hover: #2b2b2b;
  --success: #2f8f5b;
  --warn: #b7791f;
  --error: #c0392b;
  --clear: transparent;
  --veil: rgba(20, 20, 20, 0.2);
  --spec-rose: #b4536b;
  --spec-wine: #8a3a4f;
  --spec-peach: #f2b8a0;
  --spec-peach-deep: #e0a08a;
  --spec-lilac: #c9b8f0;
  --spec-lilac-deep: #9886d2;
  --spec-mist: #dfe7ef;
  --spec-mist-deep: #b8c2cc;
  --spec-umber: #2c2122;
  --spec-umber-2: #5a3c38;
  --o-white-hi: rgba(255, 255, 255, 0.72);
  --o-white-soft: rgba(255, 255, 255, 0.38);
  --o-peach: rgba(242, 184, 160, 0.95);
  --o-peach-soft: rgba(242, 184, 160, 0.55);
  --o-rose: rgba(180, 83, 107, 0.85);
  --o-rose-soft: rgba(180, 83, 107, 0.42);
  --o-wine: rgba(110, 42, 60, 0.8);
  --o-lilac: rgba(201, 184, 240, 0.9);
  --o-lilac-soft: rgba(201, 184, 240, 0.5);
  --o-mist: rgba(223, 231, 239, 0.95);
  --o-umber-hi: rgba(140, 84, 72, 0.75);
  --o-shade: rgba(20, 20, 20, 0.2);
  --o-shade-soft: rgba(20, 20, 20, 0.07);
  --stage-field: rgba(255, 255, 255, 0.7);
  --shadow-xs: 0 1px 2px rgba(20, 20, 20, 0.06);
  --shadow-lg: 0 12px 32px rgba(20, 20, 20, 0.06);
  --radius-xl: 32px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --radius-sm: 6px;
  --radius-logo: 9px;
  --radius-pill: 999px;
  --radius-round: 50%;
  --radius-shot: 10px;
  --radius-plinth: 26px;
  --font-display: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans", "Apple SD Gothic Neo", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans", "Apple SD Gothic Neo", "Microsoft YaHei", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-strong: 600;
  --size-body: 16px;
  --size-small: 13px;
  --size-label: 12.5px;
  --size-display: clamp(34px, 2vw + 19px, 48px);
  --size-h2: clamp(25px, 2.2vw, 36px);
  --size-h3: 24px;
  --leading-body: 1.6;
  --leading-prose: 1.78;
  --leading-display: 1.12;
  --tracking-display: -0.02em;
  --frame-w: 1344px;
  --frame-side: 48px;
  --reading-w: 1128px;
  --header-content-w: 1280px;
  --gutter: 40px;
  --node: 3px;
  --hairline: 1px;
  --header-h: 68px;
  --section-space: 64px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
  --space-9: 48px;
  --space-10: 64px;
  --duration-fast: 180ms;
  --duration-reveal: 550ms;
  --ease-out: cubic-bezier(0.2, 0.7, 0.2, 1);
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 24px; }
html.nav-open { overflow: hidden; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--size-body);
  line-height: var(--leading-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
[hidden] { display: none !important; }
img, svg { max-width: 100%; }
img { display: block; }
button, input, select, textarea { font: inherit; }
button, summary, a { -webkit-tap-highlight-color: var(--accent-ring); }
button { cursor: pointer; }
a { color: inherit; text-underline-offset: 0.2em; }
p, li, dd { overflow-wrap: break-word; }
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: var(--weight-normal);
  text-wrap: balance;
  overflow-wrap: break-word;
}
h1 { font-size: var(--size-display); line-height: var(--leading-display); letter-spacing: var(--tracking-display); }
h2 { font-size: var(--size-h2); line-height: 1.25; letter-spacing: -0.015em; }
h3 { font-size: var(--size-h3); line-height: 1.3; letter-spacing: -0.015em; }
strong { font-weight: var(--weight-strong); }
code, pre, kbd { font-family: var(--font-mono); }
code { overflow-wrap: anywhere; font-size: 0.88em; }
pre {
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  padding: var(--space-6);
  border: var(--hairline) solid var(--line);
  border-radius: var(--radius-md);
  background: var(--bg-panel-2);
  color: var(--text);
  font-size: 14px;
  line-height: 1.8;
  tab-size: 2;
}
pre code { font-size: inherit; white-space: pre; overflow-wrap: normal; word-break: normal; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
::selection { background: var(--accent-ring); color: var(--text); }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}
.keep { white-space: nowrap; }
.muted { color: var(--text-muted); }
.accent { color: var(--accent-dark); }
.mono { font-family: var(--font-mono); }
.wrap {
  width: 100%;
  max-width: var(--reading-w);
  padding-inline: var(--gutter);
  margin-inline: auto;
}
.frame {
  position: relative;
  width: min(var(--frame-w), calc(100% - var(--frame-side)));
  margin-inline: auto;
}
.frame--ruled { border-inline: var(--hairline) solid var(--line); }
.section { padding-top: var(--section-space); padding-bottom: var(--section-space); }
.ruled { position: relative; border-bottom: var(--hairline) solid var(--line); }
.node {
  position: absolute;
  width: var(--node);
  height: var(--node);
  border-radius: var(--radius-round);
  background: var(--text);
  color: var(--text);
  z-index: 2;
  pointer-events: none;
}
.node--tl { top: -2px; left: -2px; }
.node--tr { top: -2px; right: -2px; }
.node--bl { bottom: -2px; left: -2px; }
.node--br { bottom: -2px; right: -2px; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-6); }
.grid > *, .hero__grid > *, .cap-panel > *, .footer__grid > * { min-width: 0; }
.stack > * + * { margin-top: var(--space-6); }
.section-heading { margin-top: 0; margin-bottom: var(--space-7); }
.prose, .article-body { min-width: 0; line-height: var(--leading-prose); }
.prose h2, .article-body h2 { margin-top: var(--space-10); }
.prose h3, .article-body h3 { margin-top: var(--space-8); }
.prose p, .article-body p { margin-block: var(--space-5); }
.prose a, .article-body a { color: var(--accent-dark); }
.prose li + li, .article-body li + li { margin-top: var(--space-2); }
.prose :is(section, div), .article-body :is(section, div) { min-width: 0; max-width: 100%; }
.panel, .card {
  border: var(--hairline) solid var(--line);
  background: var(--bg-panel-2);
  color: var(--text);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-xs);
  min-width: 0;
}
.panel { border-radius: var(--radius-xl); background: var(--bg-panel); color: var(--text); }
.card h3 { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
.card--raised { box-shadow: var(--shadow-xs), var(--shadow-lg); }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 48px;
  max-width: 100%;
  padding: 10px 24px;
  border: var(--hairline) solid var(--clear);
  border-radius: var(--radius-pill);
  background: var(--bg-panel-2);
  color: var(--text);
  font: inherit;
  font-size: 15.5px;
  font-weight: var(--weight-medium);
  letter-spacing: -0.005em;
  line-height: 1.4;
  text-decoration: none;
  text-align: center;
  transition: background var(--duration-fast), border-color var(--duration-fast);
}
.btn svg { width: 17px; height: 17px; flex-shrink: 0; }
.btn--sm { min-height: 38px; padding: 8px 18px; font-size: 14px; }
.btn--ink { background: var(--text); color: var(--bg-panel-2); box-shadow: var(--shadow-xs); }
.btn--ink:hover, .btn--ink.is-hover { background: var(--ink-hover); color: var(--bg-panel-2); }
.btn--line { background: var(--bg-panel-2); color: var(--text); border-color: var(--line); box-shadow: var(--shadow-xs); }
.btn--line:hover, .btn--line.is-hover { border-color: var(--line-strong); background: var(--bg-panel); color: var(--text); }
.btn--line svg { color: var(--text-muted); }
.btn:disabled, .btn[aria-disabled="true"] { background: var(--bg-panel); color: var(--text-muted); border-color: var(--line); cursor: not-allowed; box-shadow: none; }
.btn.is-focus { outline: 2px solid var(--accent); outline-offset: 3px; }
.link-accent { color: var(--accent-dark); text-decoration: none; border-bottom: var(--hairline) solid var(--accent-ring); }
.link-accent:hover { border-bottom-color: var(--accent); }
.topbar { position: relative; z-index: 40; background: var(--bg-panel-2); color: var(--text); border-bottom: var(--hairline) solid var(--line); }
.topbar__inner {
  position: relative;
  width: 100%;
  max-width: min(100%, calc(var(--header-content-w) + var(--gutter) * 2));
  min-height: var(--header-h);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
  color: var(--text);
  text-decoration: none;
  font-size: 15px;
  font-weight: var(--weight-medium);
  letter-spacing: -0.01em;
}
.brand__mark {
  display: block;
  width: 30px;
  height: 30px;
  flex-shrink: 0;
  border-radius: var(--radius-logo);
  border: var(--hairline) solid var(--line);
  box-shadow: var(--shadow-xs);
}
.brand__placeholder { background: var(--bg-panel); color: var(--text); }
.brand__full { white-space: nowrap; }
.brand__short { display: none; }
.nav { display: flex; align-items: center; min-width: 0; margin-left: 44px; }
.nav > ul {
  display: flex;
  align-items: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__link, .nav__more-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-height: 36px;
  padding: 8px 14px;
  border: 0;
  border-radius: var(--radius-pill);
  background: var(--clear);
  color: var(--text);
  font: inherit;
  font-size: 14.5px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
}
.nav__link:hover, .nav__more-btn:hover { background: var(--bg-panel); color: var(--text); }
.nav a[aria-current="page"] { text-decoration: underline; text-decoration-color: var(--accent); text-decoration-thickness: 2px; text-underline-offset: 7px; }
.chev { width: 12px; height: 12px; color: var(--text-muted); flex-shrink: 0; }
.nav__more, .language { position: relative; }
.nav__more summary, .language summary, .preview-mobile summary { list-style: none; }
.nav__more summary::-webkit-details-marker, .language summary::-webkit-details-marker, .preview-mobile summary::-webkit-details-marker { display: none; }
.nav__menu, .language__menu {
  position: absolute;
  top: calc(100% + 12px);
  left: -8px;
  min-width: 240px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--bg-panel-2);
  color: var(--text);
  border: var(--hairline) solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xs), var(--shadow-lg);
}
.nav__menu a, .language__menu a {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 44px;
  padding: 10px 12px;
  border-radius: var(--radius-md);
  font-size: 14.5px;
  color: var(--text);
  text-decoration: none;
}
.nav__menu a:hover, .language__menu a:hover { background: var(--bg-panel); color: var(--text); }
.topbar__end { margin-left: auto; display: flex; align-items: center; gap: var(--space-2); flex-shrink: 0; }
.lang {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 38px;
  padding: 8px 14px;
  border: var(--hairline) solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--bg-panel-2);
  color: var(--text);
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  cursor: pointer;
}
.lang:hover { border-color: var(--line-strong); }
.lang__short { display: none; }
.language__menu { left: auto; right: 0; min-width: 180px; }
.language__menu a[aria-current="true"] { color: var(--accent-dark); }
.menu-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  min-width: 44px;
  min-height: 44px;
  padding: 10px;
  border: var(--hairline) solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--bg-panel-2);
  color: var(--text);
}
.menu-toggle svg { width: 20px; height: 20px; }
.menu-veil { position: fixed; inset: var(--header-h) 0 0; z-index: 1; border: 0; background: var(--veil); color: var(--text); }
.mobile-drawer {
  display: none;
  position: absolute;
  top: 100%;
  inset-inline: 0;
  z-index: 3;
  max-height: calc(100dvh - var(--header-h));
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: var(--space-4) var(--gutter) var(--space-6);
  border-bottom: var(--hairline) solid var(--line);
  background: var(--bg-panel-2);
  color: var(--text);
  box-shadow: var(--shadow-lg);
}
.mobile-drawer a { display: flex; align-items: center; width: 100%; min-height: 46px; padding: 11px 12px; color: var(--text); text-decoration: none; border-radius: var(--radius-sm); }
.mobile-drawer a:hover { background: var(--bg-panel); color: var(--text); }
.mobile-drawer a[aria-current] { color: var(--accent-dark); }
.mobile-drawer__languages { border-top: var(--hairline) solid var(--line); margin-top: var(--space-3); padding-top: var(--space-3); }
.mobile-drawer__label { margin: var(--space-2) var(--space-3); color: var(--text-muted); font-size: var(--size-small); }
.preview-mobile { display: none; }
.footer { background: var(--bg-panel); color: var(--text); border-top: var(--hairline) solid var(--line); }
.footer__inner { max-width: var(--frame-w); margin-inline: auto; padding: var(--space-10) var(--gutter) var(--space-6); }
.footer__grid { display: grid; grid-template-columns: 1.3fr 0.8fr 1.3fr; gap: var(--space-9); }
.footer__intro { max-width: 30em; color: var(--text-muted); font-size: 14px; }
.footer h2 { margin-top: 0; font-size: 14px; font-weight: var(--weight-medium); }
.footer__links { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.footer__links a { display: inline-block; color: var(--text-muted); font-size: 14px; text-decoration: none; padding-block: 3px; }
.footer__links a:hover { color: var(--accent-dark); text-decoration: underline; }
.footer__languages { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: var(--space-8); padding-top: var(--space-6); border-top: var(--hairline) solid var(--line); }
.footer__languages a { color: var(--text-muted); font-size: 13px; padding-block: 7px; }
.footer__languages a[aria-current] { color: var(--accent-dark); }
.footer__bottom { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 24px; margin-top: var(--space-6); font-size: 12.5px; color: var(--text-muted); }
.footer__bottom p { margin: 0; }
.footer__legal { display: flex; flex-wrap: wrap; gap: var(--space-5); }
.reveal { opacity: 1; transform: none; }
html.reveal-ready .reveal:not(.shown) { opacity: 0; transform: translateY(14px); }
html.reveal-ready .reveal { transition: opacity var(--duration-reveal) var(--ease-out), transform var(--duration-reveal) var(--ease-out); }
.hero, .decorated { overflow-x: clip; }
@media (max-width: 1100px) {
  .nav { display: none; }
  .menu-toggle { display: inline-flex; }
  .topbar__end { margin-left: auto; }
  .mobile-drawer:not([hidden]) { display: block; }
  .preview-mobile { display: block; }
  .preview-mobile .nav__menu { right: 0; left: auto; }
}
@media (max-width: 900px) {
  :root { --gutter: 24px; --frame-side: 32px; }
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: var(--space-7); }
  .footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 768px) {
  :root { --size-display: clamp(24px, 4.5vw, 30px); --size-h2: 26px; --size-h3: 22px; --section-space: 48px; }
  .grid { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  :root { --gutter: 16px; --frame-side: 0px; --section-space: 40px; }
  .frame--ruled { border-inline: 0; }
  .wrap { padding-inline: var(--gutter); }
  .brand { gap: 8px; font-size: 13px; }
  .brand__full { display: none; }
  .brand__short { display: inline; }
  .brand__mark { width: 28px; height: 28px; }
  .topbar__download { display: none; }
  .lang__full { display: none; }
  .lang__short { display: inline; }
  .lang { min-height: 44px; padding-inline: 11px; }
  .topbar__end { margin-left: auto; gap: 6px; }
  .panel, .card { padding: var(--space-5); }
  .footer__grid { grid-template-columns: minmax(0, 1fr); }
  .footer__brand { grid-column: auto; }
  .footer__inner { padding-inline: var(--gutter); }
  .footer__bottom { flex-direction: column; }
  .tilt, [data-tilt] { transform: none !important; }
  .node--tl, .node--bl { left: 0; }
  .node--tr, .node--br { right: 0; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html.reveal-ready .reveal:not(.shown) { opacity: 1; transform: none; }
}