:root {
  color-scheme: light;
  --ink: #192422;
  --muted: #53635e;
  --line: #cedad3;
  --action: #176243;
  --surface: #f3f7f3;
  --bg: #fafcf9;
  --t-h1: clamp(2.2rem, 5vw, 4.4rem);
  --r-btn: 6px;
  --btn-h: 48px;
  --r-lg: 8px;
  --nav: 72px;
  font-family: "Instrument Sans", system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
}
* { box-sizing: border-box; }
body { margin: 0; }
.wrap { width: min(1280px, 100% - 2 * clamp(24px, 5.55vw, 80px)); margin-inline: auto; }
.nav { position: absolute; inset: 0 0 auto; display: flex; min-height: var(--nav); align-items: center; font-weight: 650; }
.nav-content { display: flex; align-items: center; justify-content: space-between; gap: 8px 24px; flex-wrap: wrap; }
.nav-content nav { display: flex; gap: 14px; font-size: 0.875rem; }
.nav-content [aria-current="page"] { color: var(--ink); font-weight: 700; text-decoration: none; }
.hero { min-height: 100svh; padding-block: calc(var(--nav) + 48px) 48px; }
.hero-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; align-items: start; }
h1 { max-width: 12ch; margin: 0; font-size: var(--t-h1); line-height: 1.04; letter-spacing: -0.055em; }
html:lang(ko) h1 { max-width: 13em; font-size: clamp(2rem, 4.2vw, 3.4rem); line-height: 1.15; word-break: keep-all; }
p { margin: 24px 0; font-size: 1rem; line-height: 1.65; }
.hero-text > p { max-width: 45ch; }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 24px; }
.sample-choice { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 12px; margin-bottom: 12px; font-weight: 650; }
.sample-choice select { min-height: 44px; padding: 6px 10px; border: 1px solid var(--line); border-radius: var(--r-btn); background: white; color: inherit; font: inherit; }
#sample-csv { margin-top: 12px; }
.btn { background: var(--action); color: white; border: 1px solid transparent; border-radius: var(--r-btn); padding: 0 16px; min-height: var(--btn-h); font: inherit; font-weight: 650; cursor: pointer; }
.btn--secondary { background: var(--bg); color: var(--action); border-color: var(--action); }
.btn:disabled { opacity: 0.75; cursor: progress; }
.link { color: var(--action); text-underline-offset: 4px; }
.plan { margin-top: 32px; }
.plan h2 { margin: 0; font-size: 1.2rem; }
.plan p { margin: 8px 0 12px; }
#interest-status { margin-top: 8px; color: var(--muted); font-size: 0.875rem; line-height: 1.45; }
.pilot { margin-top: 24px; padding-top: 16px; border-top: 1px solid var(--line); }
.pilot summary { color: var(--action); cursor: pointer; font-weight: 650; }
.pilot p { margin: 12px 0; }
#pilot-form, .inquiry-form { display: grid; gap: 8px; max-width: 26rem; }
:is(#pilot-form, .inquiry-form) :is(input[type="email"], input[type="password"], select) { width: 100%; min-height: 44px; padding: 8px 12px; border: 1px solid var(--line); border-radius: var(--r-btn); font: inherit; }
:is(#pilot-form, .inquiry-form) label:not(.pilot-consent) { margin-top: 4px; font-weight: 650; }
.pilot-note, #pilot-status, .inquiry-status { color: var(--muted); font-size: 0.875rem; }
.pilot-consent { display: flex; gap: 8px; align-items: baseline; }
.pilot-consent input { accent-color: var(--action); }
#pilot-submit, #writing-submit { justify-self: start; margin-top: 4px; }
.writing { border-top: 1px solid var(--line); min-height: 100svh; padding-block: clamp(40px, 7vw, 96px); }
.writing h2 { margin: 0 0 32px; font-size: clamp(1.8rem, 3.4vw, 3rem); letter-spacing: -0.035em; }
.writing-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.writing-service { display: grid; grid-template-rows: auto 1fr auto; gap: 16px; justify-items: start; min-width: 0; }
.writing-service h3, .writing-contact summary { margin: 0; font-size: 1.25rem; }
.writing-contact summary { color: var(--action); font-weight: 650; cursor: pointer; }
.writing-service p { margin: 8px 0 0; }
.writing-service .app-frame { width: 100%; }
.caption-video { display: block; width: 100%; height: auto; background: var(--ink); }
#korean-captions .frame-body { display: flex; flex-wrap: wrap; gap: 8px 20px; }
.writing-service .frame-body :is(p, dl) { margin: 0; }
.writing-service .frame-body p + p { margin-top: 12px; }
.writing-service dt { font-weight: 650; }
.writing-service dd { margin: 2px 0 12px; line-height: 1.45; }
.writing-service dd:last-child { margin-bottom: 0; }
.downloads { min-height: 0; background: var(--surface); }
.downloads .app-frame { background: var(--bg); }
.download-price { color: var(--action); font-weight: 700; }
.writing-contact { margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--line); }
.writing-contact form { margin-top: 12px; }
.writing-contact p { margin: 4px 0; }
:focus-visible { outline: 2px solid var(--action); outline-offset: 4px; }
.app-frame { border: 1px solid var(--line); border-radius: var(--r-lg); min-width: 0; overflow: hidden; background: var(--surface); }
.frame-bar { display: flex; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap; border-bottom: 1px solid var(--line); padding: 16px 24px; background: white; font-weight: 650; }
.frame-bar code, #status { color: var(--muted); font-size: 0.875rem; }
.frame-body { padding: 24px; }
#status { margin: 0 0 16px; }
pre { margin: 0; min-height: 10rem; line-height: 1.65; font-size: 0.875rem; white-space: pre-wrap; overflow-wrap: anywhere; }
code { font-family: "IBM Plex Mono", ui-monospace, monospace; }
#upload-form input[type="file"] { min-width: 0; max-width: 100%; font: inherit; }
.upload-actions { display: flex; gap: 8px; flex-wrap: wrap; }
#upload-result { margin-top: 12px; min-height: 0; }
@media (max-width: 800px) {
  .hero { padding-block: calc(var(--nav) + 32px) 32px; }
  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  h1 { max-width: 17ch; }
  .writing-grid { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  :root { --nav: 56px; }
  .hero { padding-block: calc(var(--nav) + 12px) 12px; }
  .hero-grid { gap: 16px; }
  .hero-text > p { margin: 12px 0; }
  .actions { align-items: stretch; flex-direction: column; gap: 12px; }
  .plan { margin-top: 16px; }
  .frame-body, .frame-bar { padding: 12px 16px; }
  .frame-body pre { min-height: 7rem; line-height: 1.45; }
}