:root {
  color-scheme: light;
  --bg: #f7f8f5;
  --paper: #ffffff;
  --ink: #17211c;
  --muted: #526159;
  --line: #d8ded7;
  --accent: #106a5b;
  --accent-dark: #0b5146;
  --soft: #e8f4f1;
  --focus: #c26a00;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.5;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -80px;
  z-index: 10;
  padding: 10px 14px;
  background: var(--paper);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 7px;
}

.skip-link:focus {
  top: 16px;
}

header,
main,
footer {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}

header {
  padding: 22px 0 0;
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand {
  font-weight: 800;
  color: var(--ink);
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.nav-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--muted);
  font-weight: 700;
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, 0.95fr);
  gap: 36px;
  align-items: center;
  padding: 58px 0 34px;
}

h1 {
  margin: 0 0 16px;
  font-size: clamp(36px, 7vw, 66px);
  line-height: 1.03;
  letter-spacing: 0;
  overflow-wrap: anywhere;
}

h2 {
  margin: 0 0 12px;
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin: 0 0 8px;
  font-size: 20px;
  line-height: 1.2;
}

p,
li {
  color: var(--muted);
}

.lead {
  max-width: 650px;
  margin: 0 0 24px;
  font-size: clamp(18px, 2.2vw, 22px);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.button {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  padding: 0 18px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  font-weight: 800;
  text-decoration: none;
}

.button.primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.button.primary:hover {
  background: var(--accent-dark);
}

.preview {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  padding: 12px;
}

.preview img {
  width: 100%;
  display: block;
  border-radius: 6px;
}

section {
  padding: 34px 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.card,
.sample {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.tool {
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 18px;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.field {
  display: grid;
  gap: 6px;
}

.field label {
  font-weight: 800;
}

.field input,
.field select,
.field textarea {
  min-height: 46px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 0 12px;
  font: inherit;
  color: var(--ink);
  background: #fff;
}

.field textarea {
  min-height: 118px;
  padding: 10px 12px;
  resize: vertical;
}

.field.full {
  grid-column: 1 / -1;
}

.status {
  min-height: 24px;
  margin: 12px 0 0;
  color: var(--accent-dark);
  font-weight: 700;
}

.sample {
  white-space: pre-line;
  color: #26312b;
}

.answer-copy {
  margin: 10px 0 0;
  color: #26312b;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.note-panel {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 16px;
  align-items: center;
  padding: 22px;
  background: var(--soft);
  border: 1px solid #b9ddd5;
  border-radius: 8px;
}

.note-panel p {
  margin: 0;
  color: #35564e;
}

.qr-mini {
  width: 132px;
  display: grid;
  gap: 6px;
  justify-items: center;
  color: var(--ink);
  font-size: 13px;
  font-weight: 800;
  text-align: center;
  text-decoration: none;
}

.qr-mini img {
  width: 116px;
  display: block;
  padding: 6px;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
}

footer {
  padding: 28px 0 42px;
  color: var(--muted);
}

@media (max-width: 820px) {
  .hero,
  .grid,
  .tool-grid,
  .note-panel {
    grid-template-columns: 1fr;
  }

  .field.full {
    grid-column: auto;
  }
}

@media (max-width: 560px) {
  .button {
    width: 100%;
  }

  .qr-mini {
    width: 100%;
  }
}