@import url("https://fonts.googleapis.com/css2?family=Geologica:wght@500;600;700&family=Golos+Text:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap");

:root {
  --paper: #F2F4F6;
  --paper-2: #EAEEF1;
  --ink: #111821;
  --slate: #34475A;
  --steel: #4E5D6C;
  --rule: #C6CFD8;
  --rule-soft: #D8DEE4;
  --panel: #E3E8ED;
  --deep: #0C141D;
  --deep-2: #142130;
  --deep-rule: #263646;
  --deep-text: #C9D3DC;
  --deep-meta: #8C9BAA;
  --signal: #1FA9B5;
  --signal-press: #0F6C75;
  --signal-hi: #5FD3DC;
  --signal-wash: rgba(31, 169, 181, 0.10);
  --white: #FFFFFF;
  --danger: #B3261E;
  --danger-wash: #F7E4E2;
  --ok: #1B7A4B;

  --haso-77c: "Geologica", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --haso-12a: "Golos Text", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --haso-c4f: "IBM Plex Mono", "SFMono-Regular", Menlo, Consolas, monospace;

  --fs-h1: clamp(2.1rem, 1.2rem + 4.6vw, 5.6rem);
  --fs-h2: clamp(1.6rem, 1.1rem + 2.2vw, 3rem);
  --fs-h3: clamp(1.15rem, 1rem + 0.6vw, 1.5rem);
  --fs-h4: clamp(1.02rem, 0.98rem + 0.2vw, 1.12rem);
  --fs-lede: clamp(1.12rem, 1.02rem + 0.45vw, 1.4rem);
  --fs-body: clamp(1.0rem, 0.97rem + 0.18vw, 1.1rem);
  --fs-small: 0.9rem;
  --fs-meta: 0.78rem;
  --fs-micro: 0.7rem;
  --fs-figure: clamp(2.6rem, 1.6rem + 4vw, 5.2rem);

  --lh-tight: 1.04;
  --lh-head: 1.14;
  --lh-body: 1.55;
  --track-display: -0.02em;
  --track-h1: -0.028em;
  --track-meta: 0.08em;
  --measure: 64ch;
  --measure-narrow: 46ch;

  --s-1: 4px;
  --s-2: 8px;
  --s-3: 12px;
  --s-4: 16px;
  --s-5: 24px;
  --s-6: 32px;
  --s-7: 40px;
  --s-8: 56px;
  --s-9: 72px;
  --s-10: 104px;
  --s-11: 144px;

  --shell-max: 1360px;
  --gutter: clamp(16px, 3vw, 40px);
  --col-gap: clamp(12px, 2vw, 24px);
  --section-pad: clamp(64px, 9vw, 144px);
  --section-pad-sm: clamp(40px, 5.5vw, 88px);
  --header-h: 64px;

  --hair: 1px solid var(--rule);
  --hair-soft: 1px solid var(--rule-soft);
  --rule-key: 2px solid var(--ink);
  --rule-signal: 2px solid var(--signal);
  --bracket: 14px;
  --bracket-w: 1.5px;
  --radius: 0;

  --shadow-doc: 0 1px 0 rgba(17, 24, 33, 0.04), 0 18px 40px -22px rgba(17, 24, 33, 0.28), 0 2px 6px -2px rgba(17, 24, 33, 0.08);
  --shadow-float: 0 12px 32px -14px rgba(12, 20, 29, 0.45);

  --dur-1: 120ms;
  --dur-2: 180ms;
  --dur-3: 320ms;
  --dur-4: 600ms;
  --dur-5: 900ms;
  --dur-pulse: 2400ms;
  --ease-out: cubic-bezier(0.2, 0.7, 0.1, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --ease-snap: cubic-bezier(0.3, 1.4, 0.5, 1);
  --ease-linear: linear;

  --z-base: 1;
  --z-sticky: 40;
  --z-nav: 60;
  --z-header: 70;
  --z-consent: 80;
  --z-chat: 90;
  --z-skip: 100;

  --consent-offset: 0px;

  color-scheme: light;
}

@media (min-width: 1600px) {
  :root { --fs-body: 1.125rem; }
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
  overflow-x: clip;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--haso-12a);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: var(--lh-body);
  font-kerning: normal;
  font-feature-settings: "kern" 1, "liga" 1;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
  hanging-punctuation: first allow-end last;
}

body.nav-locked { overflow: hidden; }

img, picture, video, canvas, svg { display: block; max-width: 100%; }
img, video { height: auto; }
img { background: var(--panel); }
input, button, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; background: none; border: 0; padding: 0; }
p, h1, h2, h3, h4, h5, h6, li, dd, dt, figcaption, blockquote { overflow-wrap: break-word; }
h1, h2, h3, h4, h5, h6, p, ul, ol, dl, figure, blockquote { margin: 0; }
ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }
table { border-collapse: collapse; border-spacing: 0; }
iframe { display: none; }
[hidden] { display: none !important; }
:target { scroll-margin-top: calc(var(--header-h) + 24px); }
::selection { background: var(--signal); color: var(--white); }

:focus { outline: none; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }

h1, .h1, h2, .h2, h3, .h3, h4, .h4 {
  font-family: var(--haso-77c);
  color: var(--ink);
  font-weight: 600;
  text-wrap: balance;
}
h1, .h1 {
  font-size: var(--fs-h1);
  line-height: var(--lh-tight);
  letter-spacing: var(--track-h1);
  font-weight: 700;
  max-width: 18ch;
}
h2, .h2 {
  font-size: var(--fs-h2);
  line-height: var(--lh-head);
  letter-spacing: var(--track-display);
  max-width: 24ch;
}
h3, .h3 {
  font-size: var(--fs-h3);
  line-height: 1.24;
  letter-spacing: -0.01em;
}
h4, .h4 {
  font-size: var(--fs-h4);
  line-height: 1.3;
  font-weight: 600;
  letter-spacing: 0;
}

p { max-width: var(--measure); text-wrap: pretty; }

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: 0.18em; }
a:not([class]) {
  color: var(--slate);
  text-decoration-color: var(--rule);
  transition: color var(--dur-1) var(--ease-out), text-decoration-color var(--dur-1) var(--ease-out);
}
a:not([class]):hover { color: var(--ink); text-decoration-color: var(--signal); }
a:not([class]):active { color: var(--signal-press); }

strong, b { font-weight: 600; }
small { font-size: var(--fs-small); }

.mono, code, kbd, samp, .num {
  font-family: var(--haso-c4f);
  font-feature-settings: "tnum" 1, "zero" 1;
}
code { font-size: 0.9em; background: var(--panel); padding: 0.05em 0.35em; }
pre {
  font-family: var(--haso-c4f);
  font-size: var(--fs-small);
  overflow-x: auto;
  max-width: 100%;
  padding: var(--s-4);
  background: var(--panel);
  border-left: var(--rule-signal);
}

.kicker, .meta {
  font-family: var(--haso-c4f);
  font-size: var(--fs-meta);
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: var(--track-meta);
  text-transform: uppercase;
  color: var(--slate);
}
.kicker { display: flex; flex-wrap: wrap; align-items: center; gap: var(--s-2) var(--s-3); }
.kicker::before {
  content: "";
  flex: 0 0 auto;
  width: 22px;
  height: 2px;
  background: var(--signal);
}
.meta--steel { color: var(--steel); }
.lede {
  font-size: var(--fs-lede);
  line-height: 1.45;
  color: var(--slate);
  max-width: 40ch;
  letter-spacing: -0.005em;
}
.tnum { font-variant-numeric: tabular-nums; }
.figure-num {
  font-family: var(--haso-77c);
  font-size: var(--fs-figure);
  font-weight: 600;
  line-height: 0.95;
  letter-spacing: -0.035em;
  font-variant-numeric: tabular-nums lining-nums;
}

.shell {
  width: 100%;
  max-width: calc(var(--shell-max) + var(--gutter) * 2);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.shell--narrow { max-width: calc(860px + var(--gutter) * 2); }

.section { padding-block: var(--section-pad); position: relative; }
.section--tight { padding-block: var(--section-pad-sm); }
.section + .section { border-top: var(--hair); }
.section--deep {
  background: var(--deep);
  color: var(--deep-text);
}
.section--deep h1, .section--deep h2, .section--deep h3, .section--deep h4 { color: var(--white); }
.section--deep .kicker, .section--deep .meta { color: var(--deep-meta); }
.section--deep a:not([class]) { color: var(--signal-hi); text-decoration-color: var(--deep-rule); }
.section--panel { background: var(--panel); }

.grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  column-gap: var(--col-gap);
  row-gap: var(--s-6);
}
.grid > * { min-width: 0; }
@media (min-width: 640px) { .grid { grid-template-columns: repeat(6, minmax(0, 1fr)); } }
@media (min-width: 1024px) { .grid { grid-template-columns: repeat(12, minmax(0, 1fr)); } }

.span-full { grid-column: 1 / -1; }
.span-2, .span-3, .span-4, .span-5, .span-6, .span-7, .span-8, .span-9, .span-10 { grid-column: 1 / -1; }
@media (min-width: 640px) {
  .span-2 { grid-column: span 2; }
  .span-3 { grid-column: span 3; }
  .span-4, .span-5 { grid-column: span 3; }
  .span-6, .span-7, .span-8, .span-9, .span-10 { grid-column: 1 / -1; }
}
@media (min-width: 1024px) {
  .span-2 { grid-column: span 2; }
  .span-3 { grid-column: span 3; }
  .span-4 { grid-column: span 4; }
  .span-5 { grid-column: span 5; }
  .span-6 { grid-column: span 6; }
  .span-7 { grid-column: span 7; }
  .span-8 { grid-column: span 8; }
  .span-9 { grid-column: span 9; }
  .span-10 { grid-column: span 10; }
  .start-2 { grid-column-start: 2; }
  .start-4 { grid-column-start: 4; }
  .start-5 { grid-column-start: 5; }
  .start-6 { grid-column-start: 6; }
  .start-7 { grid-column-start: 7; }
  .start-8 { grid-column-start: 8; }
}

.grid-lines { position: relative; isolation: isolate; }
.grid-lines::before {
  content: "";
  position: absolute;
  inset: 0 var(--gutter);
  z-index: -1;
  pointer-events: none;
  background-image: linear-gradient(to right, var(--rule-soft) 1px, transparent 1px);
  background-size: calc(100% / 4) 100%;
  border-right: 1px solid var(--rule-soft);
}
@media (min-width: 640px) { .grid-lines::before { background-size: calc(100% / 6) 100%; } }
@media (min-width: 1024px) { .grid-lines::before { background-size: calc(100% / 12) 100%; } }
.section--deep.grid-lines::before {
  background-image: linear-gradient(to right, rgba(198, 207, 216, 0.06) 1px, transparent 1px);
  border-right-color: rgba(198, 207, 216, 0.06);
}

.stack { display: flex; flex-direction: column; gap: var(--stack-gap, var(--s-5)); }
.stack > * { min-width: 0; }
.stack--sm { --stack-gap: var(--s-3); }
.stack--lg { --stack-gap: var(--s-7); }
.cluster { display: flex; flex-wrap: wrap; align-items: center; gap: var(--cluster-gap, var(--s-3)); }
.cluster > * { min-width: 0; }
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--s-7) var(--col-gap);
}
@media (min-width: 900px) {
  .split { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
  .split--even { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); }
  .split--wide { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
}
.rule-top { border-top: var(--rule-key); padding-top: var(--s-4); }
.rule-hair { border-top: var(--hair); padding-top: var(--s-4); }

.prose { max-width: var(--measure); }
.prose > * + * { margin-top: 1em; }
.prose h2 { font-size: clamp(1.4rem, 1.1rem + 1.2vw, 2rem); margin-top: 2.2em; }
.prose h3 { margin-top: 1.8em; }
.prose h2 + *, .prose h3 + * { margin-top: 0.7em; }
.prose ul, .prose ol { padding-left: 1.25em; }
.prose li + li { margin-top: 0.4em; }
.prose ul li::marker { color: var(--signal); }
.prose ol li::marker { font-family: var(--haso-c4f); font-size: 0.85em; color: var(--steel); }
.prose blockquote {
  border-left: var(--rule-signal);
  padding-left: var(--s-5);
  font-family: var(--haso-77c);
  font-size: var(--fs-h3);
  line-height: 1.3;
  color: var(--slate);
}
.prose hr { border: 0; border-top: var(--hair); margin-block: 2em; }
.prose dl { display: grid; gap: var(--s-2) var(--s-5); }
.prose dt { font-weight: 600; }
.prose dd { margin: 0; color: var(--slate); }
.prose table { width: 100%; font-size: var(--fs-small); }

.sr-only, .visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}
.hp {
  position: absolute !important;
  left: -10000px !important;
  top: auto;
  width: 1px; height: 1px;
  overflow: hidden;
  opacity: 0;
  pointer-events: none;
}
.nowrap-num { white-space: nowrap; }

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 0 rgba(31, 169, 181, 0.55); }
  60% { box-shadow: 0 0 0 6px rgba(31, 169, 181, 0); }
}
@keyframes blink-caret { 50% { opacity: 0.25; } }

@media (prefers-reduced-motion: reduce) {
  :root {
    --dur-1: 0ms;
    --dur-2: 0ms;
    --dur-3: 0ms;
    --dur-4: 0ms;
    --dur-5: 0ms;
  }
  html { scroll-behavior: auto !important; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  body { background: #fff; color: #000; }
  .site-header, .nav-panel, .consent, .chat-launcher, .chat-panel, .site-footer .footer__nav { display: none !important; }
  a { text-decoration: underline; }
}