/* Guides and tools. Same identity as the landing: navy ground, cyan accent, Instrument Serif
   headings, flat colour, no gradients or resting shadows. */
:root {
  --bg: #070b14; --surface: #0e1524; --surface-2: #151e33; --ink: #eef6fb; --muted: #a7b6c4;
  --line: #1c2740; --accent: #53d5fd; --accent-ink: #03131c; --ok: #30d158; --warn: #ffb340; --bad: #ff6b6b;
  --serif: "Instrument Serif", Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body { background: var(--bg); color: var(--ink); font: 400 17px/1.65 var(--sans); -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
a { color: var(--accent); text-underline-offset: 3px; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.skip { position: absolute; left: -9999px; top: 0; background: var(--accent); color: var(--accent-ink); padding: 10px 16px; z-index: 50; }
.skip:focus { left: 16px; }
.wrap { max-width: 760px; margin: 0 auto; padding: 0 22px; }

.topbar { display: flex; align-items: center; gap: 18px; max-width: 1040px; margin: 0 auto; padding: 22px 22px 0; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font: 400 25px/1 var(--serif); }
.brand img { border-radius: 7px; }
.grow { flex: 1; }
.lnk { color: var(--muted); text-decoration: none; font-size: 14.5px; font-weight: 500; }
.lnk:hover { color: var(--ink); }
.top-cta { color: var(--accent-ink); background: var(--accent); padding: 9px 16px; border-radius: 4px; font-weight: 600; }
.top-cta:hover { color: var(--accent-ink); background: #7fe1ff; }

.head { padding: 58px 0 24px; }
.crumbs { font-size: 13.5px; color: var(--muted); margin-bottom: 20px; }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--ink); }
.kick { font-size: 12.5px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); }
h1, h2 { font-family: var(--serif); font-weight: 400; letter-spacing: -0.02em; }
h1 { font-size: clamp(40px, 6.6vw, 60px); line-height: 1.04; margin-top: 12px; }
.lede { font-size: 19px; color: var(--muted); margin-top: 20px; max-width: 60ch; }
.meta { font-size: 13.5px; color: var(--muted); margin-top: 18px; }

article { padding: 20px 0 10px; }
article h2 { font-size: clamp(28px, 4vw, 36px); line-height: 1.1; margin: 52px 0 14px; }
article h3 { font: 600 19px/1.35 var(--sans); margin: 30px 0 8px; }
article p, article li { color: #c9d6e1; margin-bottom: 15px; }
article > p:first-child { color: var(--ink); font-size: 19px; }
article strong { color: var(--ink); }
article ul, article ol { padding-left: 24px; margin-bottom: 16px; }
article li { margin-bottom: 8px; }
article li::marker { color: var(--accent); }
code, kbd { font: 500 .88em/1 ui-monospace, "SF Mono", Menlo, monospace; background: var(--surface-2); padding: 2px 6px; border-radius: 4px; color: var(--ink); }
.note { background: var(--surface); border-left: 3px solid var(--accent); padding: 16px 20px; margin: 26px 0; border-radius: 0 6px 6px 0; }
.note p:last-child { margin-bottom: 0; }
.source { font-size: 14px; color: var(--muted); }
.source a { color: var(--muted); }
table.data { width: 100%; border-collapse: collapse; margin: 22px 0 26px; font-size: 15px; }
table.data th, table.data td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; color: #c9d6e1; }
table.data th { color: var(--ink); font-weight: 600; }
.tablewrap { overflow-x: auto; }
figure.shot { margin: 28px 0; }
figure.shot img { border-radius: 8px; }
figure.shot figcaption { font-size: 14px; color: var(--muted); margin-top: 10px; }

.shipmate { margin: 56px 0 14px; background: var(--surface); border-radius: 8px; padding: 32px 30px; }
.shipmate .kick { margin-bottom: 4px; }
.shipmate h2 { margin-top: 8px; }
.shipmate .cta { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; margin-top: 22px; }
.shipmate .cta small { color: var(--muted); font-size: 13.5px; }
.btn { display: inline-flex; align-items: center; min-height: 48px; padding: 0 22px; border-radius: 4px; background: var(--accent); color: var(--accent-ink); font-weight: 600; text-decoration: none; }
.btn:hover { background: #7fe1ff; }

/* tools */
.tool { background: var(--surface); border-radius: 8px; padding: 26px; margin: 10px 0 30px; }
.tool label { display: block; font-size: 14px; color: var(--muted); margin: 0 0 6px; }
.tool .row { display: grid; gap: 18px; margin-bottom: 18px; }
.tool input[type=text], .tool input[type=number], .tool textarea, .tool select {
  width: 100%; background: var(--bg); color: var(--ink); border: 1px solid var(--line); border-radius: 6px; padding: 12px 14px; font: inherit; }
.tool input:focus, .tool textarea:focus, .tool select:focus { border-color: var(--accent); outline: none; }
.tool textarea { min-height: 96px; resize: vertical; }
.tool .count { display: flex; justify-content: space-between; font-size: 13.5px; margin-top: 6px; color: var(--muted); }
.tool .count b { font-weight: 600; color: var(--ok); }
.tool .count b.warn { color: var(--warn); }
.tool .count b.over { color: var(--bad); }
.tool .bar { height: 4px; background: var(--line); border-radius: 2px; margin-top: 6px; overflow: hidden; }
.tool .bar i { display: block; height: 100%; width: 0; background: var(--ok); transition: width .2s; }
.tool .bar i.warn { background: var(--warn); }
.tool .bar i.over { background: var(--bad); }
.tool .checks { list-style: none; padding: 0; margin: 4px 0 0; }
.tool .checks li { margin-bottom: 10px; padding-left: 26px; position: relative; color: #c9d6e1; font-size: 15.5px; }
.tool .checks li::before { content: ""; position: absolute; left: 4px; top: .55em; width: 9px; height: 9px; border-radius: 50%; background: var(--warn); }
.tool .checks li.ok::before { background: var(--ok); }
.tool .checks li.bad::before { background: var(--bad); }
.tool h3 { margin: 6px 0 10px; }
.tool .grid2 { display: grid; gap: 18px; grid-template-columns: 1fr 1fr; }
.tool .seg { display: inline-flex; background: var(--bg); border-radius: 8px; padding: 4px; gap: 4px; flex-wrap: wrap; }
.tool .seg button { padding: 9px 14px; border-radius: 5px; color: var(--muted); background: none; border: 0; font: inherit; cursor: pointer; }
.tool .seg button[aria-pressed=true] { background: var(--surface-2); color: var(--ink); }
.tool .result { background: var(--bg); border-radius: 8px; padding: 18px 20px; margin-top: 8px; }
.tool .result .big { font: 400 44px/1.1 var(--serif); color: var(--ink); }
.tool .result dl { display: grid; grid-template-columns: 1fr auto; gap: 6px 16px; margin-top: 12px; font-size: 15px; color: #c9d6e1; }
.tool .result dd { text-align: right; color: var(--ink); font-variant-numeric: tabular-nums; }
.tool button.copy { background: var(--surface-2); border: 0; color: var(--ink); padding: 6px 10px; border-radius: 4px; font: inherit; font-size: 13px; cursor: pointer; }
.tool button.copy:hover { background: #1c2845; }
.tool .hint { font-size: 13.5px; color: var(--muted); margin-top: 8px; }
.tool .noscript { color: var(--warn); }

.more { padding: 26px 0 10px; }
.more h2 { font-size: 28px; margin-bottom: 14px; }
.cards { display: grid; gap: 12px; }
.cards a { display: block; text-decoration: none; color: var(--ink); background: var(--surface); border-radius: 8px; padding: 20px 22px; transition: background-color .2s; }
.cards a:hover { background: var(--surface-2); }
.cards b { display: block; font: 400 24px/1.15 var(--serif); }
.cards span { display: block; color: var(--muted); font-size: 15px; margin-top: 6px; }
.index { padding: 30px 0 20px; }
.index h2 { font-size: 28px; margin: 28px 0 14px; }

.foot { border-top: 1px solid var(--line); margin-top: 50px; padding: 30px 0 50px; font-size: 14px; color: var(--muted); }
.foot nav { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.foot a { color: var(--muted); text-decoration: none; }
.foot a:hover { color: var(--accent); }
.more-apps { margin-top: 22px; }
.more-apps b { display: block; color: var(--ink); font-weight: 600; margin-bottom: 8px; }
.more-apps nav { display: flex; flex-wrap: wrap; gap: 6px 18px; }
.legal { margin-top: 22px; }

@media (max-width: 600px) {
  body { font-size: 16.5px; }
  .hide-sm { display: none; }
  .topbar { gap: 12px; }
  .shipmate { padding: 24px 20px; }
  .tool { padding: 20px 16px; }
  .tool .grid2 { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) { .cards a, .tool .bar i { transition: none; } }
.tool .alt { color: var(--muted); font-size: .92em; }
.tool .fix { background: var(--bg); border-radius: 8px; padding: 16px 18px; margin-top: 16px; }
.tool .fix-text { font: 500 15px/1.5 ui-monospace, "SF Mono", Menlo, monospace; word-break: break-all; margin: 8px 0; color: var(--ink); }
.tool .fix-head { display: flex; justify-content: space-between; gap: 12px; align-items: center; font-size: 14px; color: var(--muted); }
.tool table.data { margin: 14px 0 0; }
.tool .match { margin-top: 10px; font-size: 15px; min-height: 1.5em; }
.tool .match.ok { color: var(--ok); }
.tool .match.no { color: var(--warn); }
.tool .inline { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.tool .inline input[type=number] { width: 110px; }
.tool .inline input[type=file] { font-size: 14px; color: var(--muted); max-width: 100%; }
.tool [hidden] { display: none !important; }