:root {
  --color-bg: #ffffff;
  --color-raise: #f2f5f6;
  --color-text: #17181c;
  --color-muted: #4f5a5f;
  --color-accent: #0f6a80;
  --color-accent-deep: #0b5364;
  --color-border: #dae0e3;
  --font-head: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  --font-mark: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --container: 860px;
  --radius: 0px;
}

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

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 17.5px;
  line-height: 1.78;
}

img { max-width: 100%; height: auto; }

a { color: var(--color-accent); }

a:hover { color: var(--color-accent-deep); }

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

h1, h2, h3 { font-family: var(--font-head); margin: 0 0 16px; }

p { margin: 0 0 17px; }

ul, ol { margin: 0 0 19px; padding-left: 22px; }

li { margin-bottom: 10px; }

.jb-wrap {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
}

.jb-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--color-accent);
  color: #ffffff;
  padding: 10px 16px;
  z-index: 40;
}

.jb-skip:focus { left: 0; color: #ffffff; }

.jb-arrow { display: inline-block; font-weight: 600; text-decoration: none; }

.jb-arrow span { display: inline-block; transition: transform 140ms ease; }

.jb-arrow:hover { text-decoration: underline; }

.jb-arrow:hover span { transform: translateX(4px); }

.jb-table__scroll { overflow-x: auto; margin: 0 0 12px; }

table {
  width: 100%;
  min-width: 560px;
  border-collapse: collapse;
  font-size: 0.96rem;
}

caption {
  text-align: left;
  font-size: 0.94rem;
  color: var(--color-muted);
  padding-bottom: 13px;
}

th, td {
  text-align: left;
  padding: 13px 17px 13px 0;
  border-bottom: 1px solid var(--color-border);
  vertical-align: top;
}

thead th {
  font-family: var(--font-mark);
  font-size: 0.7rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-muted);
  font-weight: 500;
}

tbody th { font-weight: 600; padding-right: 20px; }

td.jb-num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  padding-right: 17px;
}

.jb-source {
  font-style: italic;
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0;
}

.jb-mail__addr {
  font-family: var(--font-mark);
  font-size: clamp(1.05rem, 4.4vw, 1.6rem);
  display: inline-block;
  margin: 5px 0 14px;
  word-break: break-all;
}

.jb-mail__note { color: var(--color-muted); max-width: 58ch; margin-bottom: 22px; }

.jb-prose { max-width: 70ch; }

.jb-prose h2 { margin-top: 40px; }

.jb-prose h3 { margin-top: 27px; }

.jb-updated {
  font-family: var(--font-mark);
  font-size: 0.83rem;
  color: var(--color-muted);
  margin-bottom: 29px;
}

.jb-app__meta { margin: 0 0 22px; }

.jb-app__meta dt {
  font-family: var(--font-mark);
  font-size: 0.72rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 4px;
}

.jb-app__meta dd { margin: 0; }

.jb-app__note { color: var(--color-muted); font-size: 0.92rem; margin: 15px 0 0; max-width: 64ch; }

.jb-app__head { display: flex; align-items: center; gap: 14px; margin-bottom: 18px; }

.jb-app__head h3 { margin: 0; }

.jb-app__icon { display: block; flex: 0 0 auto; width: 56px; height: 56px; border-radius: var(--radius); }

.jb-shots { display: flex; gap: 12px; overflow-x: auto; margin: 0 0 10px; padding-bottom: 6px; }

.jb-shots img { display: block; flex: 0 0 260px; width: 260px; height: auto; border-radius: var(--radius); }

.jb-figure { margin: 22px 0 0; }

.jb-figure figcaption { font-size: 0.88rem; color: var(--color-muted); margin-top: 7px; }

.jb-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 30;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 15px 0;
}

.jb-bar__inner { display: flex; flex-direction: column; gap: 13px; }

.jb-bar p { margin: 0; font-size: 0.92rem; color: var(--color-muted); }

.jb-bar__btns { display: flex; gap: 10px; flex-wrap: wrap; }

.jb-bar__btns .jb-btn { flex: 1 1 auto; padding: 12px 19px; }

.jb-404 { padding: 48px 0 90px; max-width: 58ch; }

.jb-foot__grid { display: grid; grid-template-columns: 1fr; gap: 24px; }

.jb-foot h2 {
  font-family: var(--font-mark);
  font-size: 0.71rem;
  font-weight: 500;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 11px;
}

.jb-foot ul { list-style: none; margin: 0; padding: 0; }

.jb-foot li { margin-bottom: 9px; }

.jb-foot__legal { margin-top: 27px; font-size: 0.87rem; }

@media (min-width: 700px) {
  .jb-shots { overflow-x: visible; gap: 15px; }
  .jb-shots img { flex: 1 1 0; width: 100%; }
  .jb-bar__inner { flex-direction: row; align-items: center; justify-content: space-between; }
  .jb-bar__btns .jb-btn { flex: 0 0 auto; }
  .jb-foot__grid { grid-template-columns: 1.3fr 1fr 1fr; gap: 32px; }
}

.jb-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 14px 26px;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius);
  background: var(--color-accent);
  color: #ffffff;
  font: inherit;
  font-size: 1rem;
  text-decoration: none;
  cursor: pointer;
  transition: background 140ms ease, border-color 140ms ease, color 140ms ease;
}

.jb-btn:hover { background: var(--color-accent-deep); border-color: var(--color-accent-deep); color: #ffffff; }

.jb-btn--ghost { background: var(--color-bg); color: var(--color-accent); }

.jb-btn--ghost:hover { background: var(--color-bg); color: var(--color-accent-deep); }

h1 { font-size: clamp(1.9rem, 5.4vw, 2.7rem); font-weight: 600; line-height: 1.25; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.35rem, 3.4vw, 1.7rem); font-weight: 600; line-height: 1.3; }
h3 { font-size: 1.12rem; font-weight: 600; line-height: 1.35; }

.jb-head { padding: 20px 0; }

.jb-head__row { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 20px; }

.jb-logo { font-family: var(--font-head); font-size: 1.2rem; font-weight: 600; color: var(--color-text); text-decoration: none; }

.jb-logo:hover { color: var(--color-text); }

.jb-head__mail { font-family: var(--font-mark); font-size: 0.85rem; }

.jb-hero { padding: 34px 0 0; }

.jb-hero__lead { font-size: 1.2rem; line-height: 1.6; margin-bottom: 26px; }

.jb-hero__meta { font-family: var(--font-mark); font-size: 0.8rem; letter-spacing: 0.05em; text-transform: uppercase; color: var(--color-muted); margin-bottom: 30px; }

.jb-index { margin: 0 0 12px; }

.jb-index h2 { font-family: var(--font-mark); font-size: 0.74rem; font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase; color: var(--color-muted); margin-bottom: 10px; }

.jb-index ol { list-style: none; margin: 0; padding: 0; counter-reset: ix; }

.jb-index li { margin: 0; counter-increment: ix; }

.jb-index a { display: block; min-height: 44px; padding: 10px 0; text-decoration: none; color: var(--color-text); }

.jb-index a::before { content: counter(ix, decimal-leading-zero); font-family: var(--font-mark); font-size: 0.8rem; color: var(--color-accent); margin-right: 14px; }

.jb-index a:hover { color: var(--color-accent); }

.jb-sec { padding: 76px 0 0; }

.jb-sec > *:last-child { margin-bottom: 0; }

.jb-lede { font-size: 1.07rem; color: var(--color-muted); margin-bottom: 24px; }

.jb-aside { font-size: 1rem; color: var(--color-muted); padding-left: 20px; border-left: 2px solid var(--color-accent); margin: 0 0 24px; }

.jb-steps { counter-reset: step; list-style: none; padding: 0; margin: 0 0 22px; }

.jb-steps li { counter-increment: step; padding-left: 46px; position: relative; margin-bottom: 20px; }

.jb-steps li::before { content: counter(step, decimal-leading-zero); position: absolute; left: 0; top: 2px; font-family: var(--font-mark); font-size: 0.82rem; color: var(--color-accent); }

.jb-steps b { display: block; }

.jb-faq { border-top: 1px solid var(--color-border); margin-bottom: 22px; }

.jb-faq details { border-bottom: 1px solid var(--color-border); padding: 3px 0; }

.jb-faq summary { cursor: pointer; padding: 16px 0; min-height: 44px; font-weight: 600; font-size: 1.02rem; }

.jb-faq summary:hover { color: var(--color-accent); }

.jb-faq details p { margin: 0 0 16px; max-width: 66ch; color: var(--color-muted); }

.jb-answer { font-size: clamp(1.12rem, 3vw, 1.35rem); line-height: 1.5; max-width: 48ch; margin: 0 0 20px; }

.jb-mail { padding-top: 6px; }

.jb-app__meta > div { padding: 11px 0; display: grid; grid-template-columns: 1fr; gap: 2px 24px; }

.jb-foot { margin-top: 76px; padding: 30px 0 52px; font-size: 0.95rem; line-height: 1.65; color: var(--color-muted); border-top: 1px solid var(--color-border); }

@media (min-width: 700px) {
  .jb-app__meta > div { grid-template-columns: 210px minmax(0, 1fr); }
}

@media (min-width: 900px) {
  .jb-hero { padding: 46px 0 0; }
  .jb-foot { margin-top: 96px; }
}

@media (min-width: 700px) {
  .jb-shots { display: grid; grid-template-columns: 1fr; gap: 18px; }
  .jb-shots img { width: 100%; max-width: 560px; }
}

.jb-index ol { display: flex; flex-wrap: wrap; gap: 0 26px; }

.jb-index a::before { margin-right: 8px; }

.jb-hero__lead { max-width: 54ch; }

.jb-aside { border-left: 0; border-top: 2px solid var(--color-accent); padding: 16px 0 0; }