:root {
  color-scheme: light;
  --ink: #14211a;
  --muted: #607068;
  --paper: #f6f4ec;
  --surface: #fffef8;
  --green: #145c3b;
  --green-dark: #0d422a;
  --lime: #d9f99d;
  --line: #d9ded6;
  --warning: #fff4cf;
  --radius: 20px;
  --shadow: 0 20px 50px rgba(21, 49, 34, 0.09);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
button, select { font: inherit; }
a { color: var(--green-dark); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
img { max-width: 100%; height: auto; }
.skip-link { position: fixed; inset-inline-start: 16px; top: -80px; z-index: 99; padding: 10px 16px; background: var(--ink); color: white; border-radius: 8px; }
.skip-link:focus { top: 16px; }
:focus-visible { outline: 3px solid #f4b942; outline-offset: 3px; }
.shell { width: min(1160px, calc(100% - 36px)); margin-inline: auto; }
.site-header { padding: 20px 0; }
.nav { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.brand { display: inline-flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.12rem; text-decoration: none; color: var(--ink); }
.brand-mark { display: grid; place-items: center; width: 38px; aspect-ratio: 1; border-radius: 12px; background: var(--green); color: white; }
.nav-links { display: flex; align-items: center; gap: 18px; }
.nav-links a { text-decoration: none; font-weight: 650; }
.language-select { min-height: 44px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); color: var(--ink); padding: 0 36px 0 12px; }
.language-notice { background: var(--lime); padding: 9px 16px; text-align: center; font-size: 0.94rem; }
.hero { padding: 62px 0 26px; text-align: center; }
.eyebrow { color: var(--green); font-weight: 800; letter-spacing: 0.03em; text-transform: uppercase; font-size: 0.82rem; }
h1, h2, h3 { line-height: 1.12; letter-spacing: -0.035em; }
h1 { max-width: 850px; margin: 16px auto; font-size: clamp(2.45rem, 7vw, 5.5rem); }
.lede { max-width: 760px; margin: 0 auto; color: var(--muted); font-size: clamp(1.05rem, 2.1vw, 1.3rem); }
.tool-layout { display: grid; grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr); gap: 22px; align-items: start; margin: 36px auto 60px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.controls { padding: 24px; position: sticky; top: 18px; }
.controls h2, .results h2 { margin-top: 0; }
.field-stack { display: grid; gap: 18px; }
label { display: grid; gap: 7px; font-weight: 750; }
select { width: 100%; min-height: 50px; padding: 0 14px; border: 1px solid #b9c4bd; border-radius: 12px; background: white; color: var(--ink); }
.button { min-height: 50px; border: 0; border-radius: 13px; padding: 0 18px; cursor: pointer; font-weight: 800; background: var(--green); color: white; transition: transform 150ms ease, background 150ms ease; }
.button:hover { background: var(--green-dark); transform: translateY(-1px); }
.button:disabled { opacity: 0.55; cursor: wait; transform: none; }
.button.secondary { color: var(--green-dark); background: #e7efe9; }
.button.secondary:hover { background: #dbe9de; }
.safety-note { margin: 18px 0 0; padding: 14px; background: var(--warning); border-radius: 12px; font-size: 0.92rem; }
.privacy-note { color: var(--muted); font-size: 0.88rem; }
.results { padding: 24px; scroll-margin-top: 16px; }
.result-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.result-field { min-width: 0; display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 13px; border: 1px solid var(--line); border-radius: 12px; background: #fbfcf8; }
.result-field > div { min-width: 0; display: grid; }
.result-field strong { overflow-wrap: anywhere; }
.field-label { color: var(--muted); font-size: 0.78rem; font-weight: 750; text-transform: uppercase; letter-spacing: 0.03em; }
.copy-icon { flex: 0 0 auto; min-width: 54px; min-height: 42px; border: 1px solid var(--line); background: white; border-radius: 10px; color: var(--green-dark); cursor: pointer; font-size: 0.8rem; font-weight: 750; }
.action-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
.batch-results { display: grid; gap: 8px; padding: 0; list-style: none; }
.batch-results li { display: grid; padding: 10px 12px; border-radius: 10px; background: #f3f6f1; }
.batch-results span { color: var(--muted); font-size: 0.9rem; overflow-wrap: anywhere; }
.section { padding: 60px 0; }
.section-heading { max-width: 700px; margin-bottom: 28px; }
.section-heading h2 { margin: 0 0 10px; font-size: clamp(2rem, 4vw, 3.35rem); }
.feature-grid, .use-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.feature, .use-card { padding: 22px; border: 1px solid var(--line); background: var(--surface); border-radius: 16px; }
.feature-number { display: block; margin-bottom: 28px; color: var(--green); font-weight: 900; }
.ad-reservation { min-height: 110px; display: grid; place-items: center; margin: 28px auto; border: 1px dashed #9daaa2; border-radius: 14px; color: var(--muted); text-align: center; padding: 16px; background: rgba(255,255,255,0.4); }
.faq-list { display: grid; gap: 12px; }
details { background: var(--surface); border: 1px solid var(--line); border-radius: 14px; padding: 16px 18px; }
summary { cursor: pointer; font-weight: 800; }
details p { color: var(--muted); margin-bottom: 0; }
.content-page { max-width: 800px; padding: 54px 0 80px; }
.content-page h1 { margin-inline: 0; font-size: clamp(2.4rem, 6vw, 4.6rem); }
.content-page h2 { margin-top: 38px; }
.site-footer { padding: 38px 0; border-top: 1px solid var(--line); }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 28px; }
.footer-links { display: grid; align-content: start; gap: 8px; }
.footer-small { color: var(--muted); font-size: 0.88rem; }
.support-codes { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 18px; }
.support-codes figure { margin: 0; width: 132px; }
.support-codes img { display: block; width: 132px; height: 132px; object-fit: contain; background: white; border: 1px solid var(--line); border-radius: 10px; }
.support-codes figcaption { margin-top: 5px; font-size: 0.78rem; color: var(--muted); }
[hidden] { display: none !important; }

@media (max-width: 900px) {
  .tool-layout { grid-template-columns: 1fr; }
  .controls { position: static; }
  .feature-grid, .use-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
  .shell { width: min(100% - 24px, 1160px); }
  .site-header { padding: 12px 0; }
  .nav-links a { display: none; }
  .hero { padding-top: 34px; }
  .tool-layout { margin-top: 24px; }
  .controls, .results { padding: 17px; }
  .result-grid, .feature-grid, .use-grid, .footer-grid { grid-template-columns: 1fr; }
  .action-row .button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition: none !important; }
}