:root {
  --ink: #17201c;
  --muted: #69736e;
  --paper: #f5f7f2;
  --card: #ffffff;
  --lime: #c9f45b;
  --green: #285c49;
  --line: #dfe5dc;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, Pretendard, "Noto Sans KR", system-ui, sans-serif;
}

.hero {
  padding: 24px max(24px, calc((100% - 1080px) / 2)) 76px;
  color: #fff;
  background: radial-gradient(circle at 85% 15%, #397a63 0, transparent 32%), #122c24;
}

nav { display: flex; align-items: center; justify-content: space-between; letter-spacing: .08em; }
.badges { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }
.badge { padding: 7px 12px; border: 1px solid #ffffff50; border-radius: 999px; font-size: 12px; letter-spacing: 0; }
.badge.live { border: 0; color: #16271f; background: var(--lime); }
.hero-copy { max-width: 760px; margin-top: 90px; }
.eyebrow { margin-bottom: 8px; color: #5f9b84; font-size: 12px; font-weight: 800; letter-spacing: .18em; }
h1 { margin: 12px 0 20px; font-size: clamp(40px, 7vw, 76px); line-height: 1.04; letter-spacing: -.055em; }
.hero-copy > p:last-child { color: #c5d1cc; font-size: 17px; line-height: 1.6; }

main { width: min(1080px, calc(100% - 40px)); margin: -34px auto 0; }
.panel { border: 1px solid var(--line); border-radius: 18px; background: var(--card); box-shadow: 0 14px 36px #16261e0b; }
.service-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; padding: 22px; }
.service-grid article { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 14px; padding: 10px 16px; }
.service-grid small { display: block; margin-top: 4px; color: var(--muted); }
.dot { width: 12px; height: 12px; border-radius: 50%; }
.firebase { background: #ffad29; box-shadow: 0 0 0 6px #fff1d8; }
.cloudflare { background: #f48120; box-shadow: 0 0 0 6px #ffead8; }
.channel-status { padding: 5px 9px; border-radius: 999px; color: var(--muted); background: #eef0ed; font-size: 11px; font-weight: 800; }
.channel-status.verified { color: #24523f; background: #dff1df; }

.workspace { padding: 70px 0; }
.section-title { display: flex; align-items: end; justify-content: space-between; margin-bottom: 22px; }
.section-title span { color: var(--muted); font-size: 13px; }
h2, h3, p { margin-top: 0; }
h2 { margin-bottom: 0; font-size: 32px; }
.pilot-card { display: grid; grid-template-columns: 1.35fr 1fr; gap: 36px; padding: 34px; border: 1px solid var(--line); border-radius: 18px; background: var(--card); }
.tag { display: inline-block; padding: 6px 10px; border-radius: 99px; color: var(--green); background: #e6f4ea; font-size: 11px; font-weight: 800; }
.summary { max-width: 580px; margin: 24px 0; font-size: 23px; font-weight: 700; line-height: 1.45; letter-spacing: -.025em; }
dl { display: grid; gap: 9px; margin: 0; }
dl div { display: grid; grid-template-columns: 72px 1fr; gap: 12px; }
dt { color: var(--muted); font-size: 13px; font-weight: 800; }
dd { margin: 0; font-size: 14px; line-height: 1.5; }
code { padding: 2px 6px; border-radius: 5px; background: #eef1ec; font-size: 12px; }

.validation-form { padding: 26px; border-radius: 14px; background: #f4f8f2; }
.form-heading { display: flex; align-items: start; justify-content: space-between; margin-bottom: 18px; }
.form-heading h3 { margin-bottom: 0; }
#progressText { padding: 8px 10px; border-radius: 9px; color: var(--muted); background: #fff; font-size: 13px; }
#progressText.complete { color: #183f30; background: var(--lime); }
.validation-form label { display: flex; align-items: center; gap: 10px; margin: 13px 0; font-size: 14px; font-weight: 650; }
.validation-form input { width: 18px; height: 18px; margin: 0; accent-color: var(--green); }
.validation-form button { width: 100%; margin: 18px 0 10px; }
button { border: 0; border-radius: 10px; padding: 14px 24px; color: #163026; background: var(--lime); font: inherit; font-weight: 800; cursor: pointer; }
button:disabled { opacity: .55; cursor: wait; }
.message { min-height: 20px; margin: 0; color: var(--muted); font-size: 13px; line-height: 1.5; }

.guide { display: grid; grid-template-columns: .7fr 1.3fr; gap: 30px; margin-top: 24px; padding: 28px 34px; }
.guide h3 { margin-bottom: 0; }
.guide ol { margin: 0; padding-left: 20px; color: var(--muted); font-size: 14px; line-height: 1.9; }
.sample-notice { margin-top: 18px; padding: 15px 18px; border: 1px solid #ebd8ad; border-radius: 12px; color: #705a29; background: #fff8e7; font-size: 13px; line-height: 1.6; }
.sample-notice[hidden] { display: none; }
footer { padding: 28px; border-top: 1px solid var(--line); color: var(--muted); text-align: center; font-size: 12px; }

@media (max-width: 720px) {
  .hero-copy { margin-top: 60px; }
  .service-grid, .pilot-card, .guide { grid-template-columns: 1fr; }
  .pilot-card { padding: 24px; }
  .workspace { padding-top: 50px; }
  .section-title { align-items: start; gap: 10px; }
  .section-title > span { max-width: 45%; text-align: right; }
}

@media (max-width: 480px) {
  nav { align-items: flex-start; }
  .badges { max-width: 60%; }
  .service-grid { padding: 14px; }
  .service-grid article { padding: 10px 8px; }
  .channel-status { grid-column: 2; justify-self: start; }
}