:root {
  --ink: #1c1b19;
  --muted: #5c635e;
  --jade: #0f6b5c;
  --jade-deep: #0a4f44;
  --paper: #f7f8f5;
  --line: #d2d9d4;
  --display: "Iowan Old Style", Palatino, Georgia, "Songti SC", serif;
  --ui: "Avenir Next", "Segoe UI", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font: 18px/1.65 var(--ui);
  color: var(--ink);
  background:
    radial-gradient(80% 50% at 100% 0%, #dce8e2, transparent 50%),
    var(--paper);
}
.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: #fff;
  padding: 8px 12px;
  z-index: 10;
}
.skip:focus { left: 8px; }
header, main, footer { max-width: 840px; margin: 0 auto; padding: 0 24px; }
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 28px;
  padding-bottom: 28px;
}
.brand { display: flex; gap: 10px; align-items: center; font-weight: 700; text-decoration: none; color: inherit; }
.brand svg, .brand img { width: 36px; height: 36px; display: block; border-radius: 10px; flex: 0 0 auto; }
nav a { color: var(--muted); text-decoration: none; margin-left: 16px; font-size: 15px; }
nav a:hover, nav a[aria-current="page"] { color: var(--jade-deep); }
h1 {
  font-family: var(--display);
  font-size: clamp(34px, 6vw, 54px);
  line-height: 1.15;
  font-weight: 600;
  margin: 36px 0 16px;
}
h2 { font-family: var(--display); font-size: 28px; margin: 48px 0 12px; }
h3 { font-size: 18px; margin: 24px 0 8px; }
.lede { font-size: 20px; color: var(--muted); max-width: 36em; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin: 28px 0 48px; }
.btn {
  display: inline-block;
  background: var(--jade);
  color: #fff;
  text-decoration: none;
  padding: 12px 18px;
  border-radius: 10px;
  font-weight: 650;
  border: 0;
  font: inherit;
  cursor: pointer;
}
.btn.ghost { background: transparent; color: var(--jade); border: 1px solid var(--line); }
.grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); margin: 24px 0; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 18px;
}
.card h3 { margin: 0 0 6px; font-size: 16px; }
.card p { margin: 0; color: var(--muted); font-size: 15px; }
ol.steps { padding-left: 1.2em; }
ol.steps li { margin: 8px 0; }
.faq p { color: var(--muted); margin: 0 0 8px; }
footer { padding: 48px 24px 64px; color: var(--muted); font-size: 14px; }
footer a { color: var(--jade); }
.note { color: #7a837d; font-size: 14px; }
label.field-label {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #6d766f;
  margin: 22px 0 8px;
}
textarea,
[contenteditable].editor,
pre.out {
  width: 100%;
  min-height: 148px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  font: inherit;
  color: var(--ink);
  box-shadow: 0 10px 30px rgba(28, 27, 25, 0.05);
  outline: none;
}
textarea:focus,
[contenteditable].editor:focus {
  border-color: #7fb3a5;
  box-shadow: 0 0 0 4px rgba(15, 107, 92, 0.12);
}
pre.out { white-space: pre-wrap; min-height: 120px; }
.row { display: flex; gap: 12px; align-items: center; margin: 16px 0; flex-wrap: wrap; }
.status { color: var(--muted); font-size: 15px; }
.status.error { color: #b42318; }
code { font-size: 0.92em; }