:root {
  --ink: #16202b;
  --muted: #5c6b7a;
  --line: #e2e8ef;
  --bg: #f6f8fa;
  --accent: #0b6e4f;
  --accent-ink: #fff;
  --warn: #8a5300;
  --neg: #b4232a;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font: 16px/1.6 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
header.site {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1rem; padding: 1rem 1.25rem; background: #fff; border-bottom: 1px solid var(--line);
}
.brand { font-weight: 700; font-size: 1.15rem; text-decoration: none; color: var(--ink); letter-spacing: -0.01em; }
.brand span { color: var(--accent); }
header.site nav { display: flex; gap: 1.25rem; font-size: .93rem; }
header.site nav a { color: var(--muted); text-decoration: none; }
header.site nav a:hover { color: var(--accent); }

main { max-width: 820px; margin: 0 auto; padding: 1.5rem 1.25rem 4rem; }

.hero { padding: 1.5rem 0 .5rem; }
.hero h1 { font-size: 2rem; line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 .75rem; }
.hero .sub { font-size: 1.08rem; color: var(--muted); margin: 0 0 1rem; }
.hero .sub strong { color: var(--ink); }
.privacy { font-size: .92rem; color: var(--accent); background: #eaf5f0; border: 1px solid #cfe7dc; border-radius: 8px; padding: .6rem .8rem; display: inline-block; margin: 0; }

.card { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 1.5rem; margin: 1.5rem 0; }
.card h2 { font-size: 1.1rem; margin: 1.5rem 0 .5rem; letter-spacing: -0.01em; }
.card h2:first-child { margin-top: 0; }
.card h3 { font-size: .98rem; margin: 1.25rem 0 .25rem; }
.hint { font-size: .87rem; color: var(--muted); margin: .25rem 0 .75rem; }

.drop {
  border: 2px dashed #c2cedb; border-radius: 10px; padding: 1.75rem 1rem; text-align: center;
  background: #fbfcfd; transition: .15s;
}
.drop.over { border-color: var(--accent); background: #eaf5f0; }
.drop p { margin: .25rem 0; }
.drop input[type=file] { display: none; }
/* Inline text buttons ("choose a file", "try a sample"). A little vertical padding so
   they are a reachable target on a touch screen without changing how they read. */
button.link { background: none; border: 0; color: var(--accent); font: inherit; text-decoration: underline; cursor: pointer; padding: .25rem 0; }
.fileinfo { font-size: .9rem; color: var(--accent); margin: .75rem 0 0; font-weight: 500; }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: .75rem 1rem; }
label { display: flex; flex-direction: column; gap: .25rem; font-size: .85rem; color: var(--muted); font-weight: 500; }
/* 16px is not a style choice: iOS Safari zooms the whole page when a control with a
   smaller font is focused, and does not zoom back. The converter has ten of these, so at
   15.2px every tap on a dropdown threw the layout around on an iPhone. */
select, input[type=text], input[type=email] {
  font: inherit; font-size: 1rem; padding: .5rem .6rem; border: 1px solid #ccd6e0;
  border-radius: 7px; background: #fff; color: var(--ink); width: 100%;
}
select:focus, input:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: var(--accent); }

.gridnote { grid-column: 1 / -1; margin: 0; }
.adv { margin: 1rem 0; border: 1px solid var(--line); border-radius: 9px; padding: .7rem .9rem; background: #fbfcfd; }
.adv summary { cursor: pointer; font-size: .9rem; font-weight: 600; }
.adv code { background: #eef2f6; padding: .05rem .3rem; border-radius: 4px; font-size: .9em; }

.summary { font-size: .9rem; font-weight: 600; margin: .5rem 0; }
.tablewrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .88rem; }
th, td { text-align: left; padding: .4rem .6rem; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; }
td.num { text-align: right; font-variant-numeric: tabular-nums; }
td.neg { color: var(--neg); }

.warn { font-size: .87rem; color: var(--warn); background: #fdf6e8; border: 1px solid #f0e0bd; border-radius: 7px; padding: .5rem .7rem; margin: .5rem 0 0; }

.cta, form#wait button {
  margin-top: 1.25rem; font: inherit; font-weight: 600; font-size: 1rem;
  background: var(--accent); color: var(--accent-ink); border: 0; border-radius: 8px;
  padding: .7rem 1.2rem; cursor: pointer;
}
.cta:disabled { background: #b9c4ce; cursor: not-allowed; }
.cta:hover:not(:disabled), form#wait button:hover { background: #095a40; }

.pro ul { padding-left: 1.2rem; margin: .5rem 0 1rem; }
.pro li { margin: .35rem 0; }
form#wait { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; }
form#wait input { width: auto; flex: 1 1 200px; }
form#wait button { margin-top: 0; }
.waitmsg { font-size: .9rem; margin: .6rem 0 0; }
.waitmsg.ok { color: var(--accent); font-weight: 600; }
.waitmsg.err { color: var(--neg); }

.faq p { font-size: .94rem; color: #35414d; }
footer { border-top: 1px solid var(--line); background: #fff; padding: 1.25rem; text-align: center; }
footer p { font-size: .84rem; color: var(--muted); margin: 0; }

/* ---------- guide pages ---------- */

.crumb { font-size: .82rem; color: var(--muted); padding: 1rem 0 .25rem; }
.crumb a { color: var(--muted); }

.prose { background: #fff; border: 1px solid var(--line); border-radius: 12px; padding: 1.75rem; margin: .75rem 0 1.5rem; }
.prose h1 { font-size: 1.85rem; line-height: 1.22; letter-spacing: -0.02em; margin: 0 0 .85rem; }
.prose h2 { font-size: 1.2rem; letter-spacing: -0.01em; margin: 2rem 0 .6rem; }
.prose h3 { font-size: 1rem; margin: 1.5rem 0 .35rem; }
.prose p, .prose li { font-size: .96rem; color: #35414d; }
.prose .lede { font-size: 1.06rem; color: var(--muted); }
.prose .lede em { color: var(--ink); font-style: normal; font-weight: 500; }
.prose ul, .prose ol { padding-left: 1.3rem; }
.prose li { margin: .4rem 0; }
.prose code { background: #eef2f6; padding: .05rem .3rem; border-radius: 4px; font-size: .9em; }
.prose pre {
  background: #f7f9fb; border: 1px solid var(--line); border-radius: 8px;
  padding: .8rem .95rem; overflow-x: auto; font-size: .85rem; line-height: 1.5;
}
.prose pre code { background: none; padding: 0; }
.prose .privacy { margin: 1rem 0; }
.prose .cta { display: inline-block; margin: .5rem 0; text-decoration: none; }
.prose table { margin: .5rem 0; }
.prose .src { font-size: .88rem; }
.prose .src li { margin: .3rem 0; }

ul.guides { list-style: none; padding: 0; }
ul.guides li { margin: 0 0 1.25rem; }
ul.guides a { font-size: 1.04rem; font-weight: 600; text-decoration: none; }
ul.guides a:hover { text-decoration: underline; }
ul.guides span { display: block; font-size: .92rem; color: var(--muted); margin-top: .2rem; }

@media (max-width: 560px) {
  .hero h1 { font-size: 1.55rem; }
  header.site { flex-direction: column; align-items: flex-start; gap: .5rem; }
  .prose { padding: 1.1rem; }
  .prose h1 { font-size: 1.45rem; }
  /* Reclaim the horizontal room the nested paddings eat: main + card + details was
     leaving about 287px of content on a 375px phone. */
  main { padding: 1rem .75rem 3rem; }
  .card { padding: 1.1rem; }
  .adv { padding: .6rem .7rem; }
  .cta { display: block; text-align: center; }
}

/* checkbox row in the advanced blocks */
.check { display: flex; align-items: center; gap: .5rem; font-size: .92rem; margin: .6rem 0; cursor: pointer; }
.check input { width: auto; margin: 0; }

/* quoted source material in guides */
.prose blockquote { margin: 1rem 0; padding: .7rem 1rem; border-left: 3px solid var(--accent, #2b7); background: #f6f8fa; border-radius: 0 7px 7px 0; }
.prose blockquote p { margin: 0 0 .4rem; }
.prose blockquote p:last-child { margin: 0; color: #596; }

/* stated price on the Pro block: has to read as a fact, not a banner */
.pro .price { margin: 1rem 0 .6rem; padding: .7rem .9rem; background: #fff; border: 1px solid #d8e4de; border-radius: 8px; }
.pro .price .hint { display: block; margin-top: .3rem; }

/* restored-layout notice */
.remembered { font-size: .87rem; color: var(--accent); background: #eef7f3; border: 1px solid #cfe6dc; border-radius: 7px; padding: .45rem .7rem; margin: .4rem 0 .6rem; }

/* PDF reading status */
.pdfnote { font-size: .88rem; color: var(--accent); background: #eef7f3; border: 1px solid #cfe6dc; border-radius: 7px; padding: .5rem .75rem; margin: .5rem 0 0; }