/* JR Integrated. Contrast on the two surfaces:
   --paper on --ink 17.3:1, --muted on --ink 8.6:1, --signal on --ink 7.2:1,
   --ink on --paper 17.3:1, --muted-dark on --paper 7.1:1, --signal-dark on --paper 5.2:1. */

@font-face {
  font-family: "Hanken Grotesk";
  src: url("/fonts/hanken-grotesk-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("/fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 800;
  font-display: swap;
}

:root {
  --ink: #0a0a0a;
  --ink-2: #171716;
  --line: #2e2e2c;
  --paper: #f4f2ec;
  --paper-2: #e9e6dd;
  --line-light: #c9c5b9;
  --muted: #a9a79f;
  --muted-dark: #4f4e49;
  --signal: #ff6a3d;
  --signal-dark: #b83a12;
  --gutter: clamp(16px, 4vw, 56px);
  --sans: "Hanken Grotesk", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, monospace;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--ink); color: var(--paper); font: 400 1.0625rem/1.55 var(--sans); }
h1, h2, h3, p, ul, ol, dl, dd { margin: 0; padding: 0; }
ul, ol { list-style: none; }
a { color: inherit; text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--signal); outline-offset: 3px; }

.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.skip { position: absolute; left: var(--gutter); top: -60px; z-index: 20; padding: 10px 16px; background: var(--paper); color: var(--ink); }
.skip:focus { top: 12px; }

.label { font: 500 .8125rem/1.3 var(--mono); letter-spacing: .02em; color: var(--muted); }
.label::before { content: "["; color: var(--signal); margin-right: .45em; }
.label::after { content: "]"; color: var(--signal); margin-left: .45em; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 12px 22px;
  border: 1.5px solid var(--paper); background: var(--paper); color: var(--ink);
  font: 650 1rem/1.2 var(--sans); text-decoration: none; cursor: pointer; transition: background .15s, color .15s, border-color .15s;
}
.btn:hover { background: var(--signal); border-color: var(--signal); color: var(--ink); }
.btn-ghost { background: transparent; color: var(--paper); }
.btn-small { min-height: 40px; padding: 8px 16px; font-size: .9375rem; }
.btn[disabled] { opacity: .6; cursor: progress; }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; justify-content: space-between; gap: 24px;
  padding: 14px var(--gutter); background: rgb(10 10 10 / .92); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line);
}
.nav nav { display: flex; gap: 28px; margin-left: auto; }
.nav nav a { text-decoration: none; font-size: .9375rem; color: var(--muted); }
.nav nav a:hover { color: var(--paper); }
.wordmark { font: 800 1.5rem/1 var(--sans); letter-spacing: -.02em; text-decoration: none; }
.wordmark .b { font-weight: 500; }

/* Hero */
.hero { padding: clamp(56px, 9vw, 120px) var(--gutter) clamp(48px, 6vw, 80px); border-bottom: 1px solid var(--line); }
.hero h1 { margin-top: 28px; font-weight: 750; font-size: clamp(2.6rem, 8.6vw, 8rem); line-height: .98; letter-spacing: -.04em; }
.hero-line, .hero-swap { display: block; }
.hero-swap { margin-top: .08em; white-space: nowrap; }
.hb { color: var(--signal); font-weight: 400; }
.hero-word { display: inline-block; padding: 0 .08em; transition: opacity .22s, transform .22s; }
.hero-word.out { opacity: 0; transform: translateY(.14em); }
.hero-foot { display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between; gap: 32px; margin-top: clamp(40px, 6vw, 72px); }
.lede { max-width: 38rem; font-size: clamp(1.125rem, 1.6vw, 1.375rem); line-height: 1.4; color: var(--muted); }
.actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* Sections */
.section { padding: clamp(64px, 8vw, 112px) var(--gutter); }
.section-light { background: var(--paper); color: var(--ink); color-scheme: light; }
.section-light .label { color: var(--muted-dark); }
.section-light .label::before, .section-light .label::after { color: var(--signal-dark); }
.section-head { max-width: 46rem; margin-bottom: clamp(36px, 5vw, 60px); }
.section-head h2 { margin: 16px 0 14px; font-weight: 720; font-size: clamp(2rem, 4.6vw, 3.75rem); line-height: 1.03; letter-spacing: -.03em; }
.section-head > p:not(.label) { color: var(--muted); font-size: 1.125rem; }
.section-light .section-head > p:not(.label) { color: var(--muted-dark); }

/* Diagnose */
.diagnose { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); border: 1px solid var(--line); }
.tabs { display: flex; flex-direction: column; border-right: 1px solid var(--line); }
.tabs button {
  display: grid; grid-template-columns: 2.4rem 1fr; gap: 8px; flex: 1; width: 100%; padding: 22px 24px; text-align: left; cursor: pointer;
  background: transparent; color: var(--muted); border: 0; border-bottom: 1px solid var(--line); font: 600 clamp(1.0625rem, 1.5vw, 1.3125rem)/1.25 var(--sans);
  transition: background .15s, color .15s;
}
.tabs button:last-child { border-bottom: 0; }
.tabs button span { font: 500 .8125rem/1.8 var(--mono); }
.tabs button:hover { color: var(--paper); background: var(--ink-2); }
.tabs button[aria-selected="true"] { background: var(--paper); color: var(--ink); }
.tabs button[aria-selected="true"] span { color: var(--signal-dark); }
.panels article { padding: clamp(24px, 3.5vw, 48px); }
.panels h3 { font-size: clamp(1.5rem, 2.6vw, 2.25rem); font-weight: 700; line-height: 1.1; letter-spacing: -.02em; }
.panel-lede { margin-top: 14px; max-width: 36rem; font-size: 1.1875rem; line-height: 1.4; }
.panels dl { display: grid; grid-template-columns: 7rem 1fr; gap: 14px 20px; margin: 28px 0 32px; padding-top: 24px; border-top: 1px solid var(--line); }
.panels dt { font: 500 .8125rem/1.9 var(--mono); color: var(--signal); }
.panels dd { color: var(--muted); }

/* Work */
.work { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border: 1px solid var(--ink); }
.case { display: flex; flex-direction: column; padding: clamp(22px, 2.6vw, 34px); border-right: 1px solid var(--ink); }
.case:last-child { border-right: 0; }
.case h3 { font-size: clamp(1.625rem, 2.6vw, 2.25rem); font-weight: 750; line-height: 1.05; letter-spacing: -.025em; }
.case header p { margin-top: 6px; font: 500 .8125rem/1.4 var(--mono); color: var(--muted-dark); }
.case-what { margin: 26px 0 18px; font-size: 1.1875rem; font-weight: 600; line-height: 1.3; }
.case li { padding: 9px 0; border-top: 1px solid var(--line-light); color: var(--muted-dark); font-size: 1rem; line-height: 1.4; }
.case-call { margin-top: auto; padding-top: 24px; font-size: 1rem; line-height: 1.45; }

/* Process */
.steps { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 32px; counter-reset: step; }
.steps li { padding-top: 18px; border-top: 1px solid var(--paper); counter-increment: step; }
.steps li::before { content: "[" counter(step) "]"; font: 500 .8125rem/1 var(--mono); color: var(--signal); }
.steps h3 { margin: 14px 0 8px; font-size: 1.3125rem; font-weight: 700; letter-spacing: -.01em; }
.steps p { color: var(--muted); }
.fit { display: grid; grid-template-columns: 1fr 1fr; margin-top: clamp(48px, 6vw, 80px); border: 1px solid var(--line); }
.fit > div { padding: clamp(22px, 3vw, 36px); }
.fit > div + div { border-left: 1px solid var(--line); }
.fit h3 { margin-bottom: 10px; font-size: 1.25rem; font-weight: 700; }
.fit h3 span { font: 500 1rem var(--mono); }
.fit .yes { color: var(--signal); }
.fit .no { color: var(--muted); }
.fit p { color: var(--muted); }

/* Booking */
.cal-shell { border: 1px solid var(--ink); background: #fff; }
.cal-embed { min-height: 620px; width: 100%; overflow: auto; }
.cal-embed iframe { color-scheme: light; }
.cal-alt { margin-top: 14px; color: var(--muted-dark); }

/* Brief */
.brief-grid { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: clamp(32px, 6vw, 96px); }
.brief-grid .section-head { margin: 0; }
.brief-grid address { margin-top: 26px; font-style: normal; font: 500 1rem var(--mono); }
.field { margin-bottom: 20px; }
.field label { display: block; margin-bottom: 7px; font-weight: 600; font-size: 1rem; }
.field label span { font-weight: 400; color: var(--muted); }
input, select, textarea {
  width: 100%; min-height: 50px; padding: 12px 14px; border: 1px solid #6c6b65; border-radius: 0;
  background: var(--ink-2); color: var(--paper); font: 400 1.0625rem/1.4 var(--sans);
}
textarea { resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid var(--signal); outline-offset: 0; border-color: var(--signal); }
[aria-invalid="true"] { border-color: var(--signal); }
.error { margin-top: 6px; color: var(--signal); font-size: .9375rem; }
.error:empty { display: none; }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.fineprint { margin-bottom: 20px; color: var(--muted); font-size: .9375rem; }
.form-status { margin-top: 16px; font-weight: 600; }
.form-status:empty { display: none; }
.form-status.ok { color: var(--paper); }
.form-status.bad { color: var(--signal); }

/* Footer */
.footer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px 32px; padding: 32px var(--gutter); border-top: 1px solid var(--line); color: var(--muted); font-size: .9375rem; }
.footer .wordmark { color: var(--paper); }
.footer p a + a { margin-left: 18px; }

/* Plain pages */
.page { max-width: 44rem; padding: clamp(56px, 8vw, 96px) var(--gutter); margin: 0 auto; }
.page h1 { margin: 16px 0 24px; font-size: clamp(2.25rem, 5vw, 3.75rem); font-weight: 720; line-height: 1.03; letter-spacing: -.03em; }
.page h2 { margin: 36px 0 10px; font-size: 1.375rem; font-weight: 700; }
.page p, .page li { color: var(--muted); }
.page p + p { margin-top: 12px; }
.page ul { margin-top: 10px; list-style: disc; padding-left: 1.2em; }
.page .btn { margin-top: 28px; }

@media (max-width: 960px) {
  .diagnose, .brief-grid { grid-template-columns: minmax(0, 1fr); }
  .tabs { border-right: 0; border-bottom: 1px solid var(--line); }
  .work { grid-template-columns: minmax(0, 1fr); }
  .case { border-right: 0; border-bottom: 1px solid var(--ink); }
  .case:last-child { border-bottom: 0; }
  .case-call { margin-top: 0; }
  .steps { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 640px) {
  .nav nav { display: none; }
  .hero h1 { font-size: clamp(2.35rem, 12.2vw, 4rem); }
  .actions, .actions .btn { width: 100%; }
  .tabs button { padding: 16px; }
  .panels dl { grid-template-columns: minmax(0, 1fr); gap: 2px; }
  .panels dd { margin-bottom: 14px; }
  .steps, .fit { grid-template-columns: minmax(0, 1fr); }
  .fit > div + div { border-left: 0; border-top: 1px solid var(--line); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}