:root {
  --bg: #f3f6f3;
  --card: #ffffff;
  --ink: #1f2d23;
  --muted: #5d6e61;
  --line: #d9e3db;
  --green: #3d7a55;
  --soft: #eaf4ec;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Malgun Gothic","Noto Sans KR",sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.75;
}
.top {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 14px clamp(16px,4vw,40px);
  background: rgba(255,255,255,.92);
  border-bottom: 1px solid var(--line);
}
.logo { text-decoration: none; color: var(--ink); font-weight: 800; }
nav { display: flex; gap: 8px; flex-wrap: wrap; }
nav a {
  text-decoration: none;
  color: var(--muted);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 14px;
}
nav a:hover { background: var(--green); color: #fff; }
main { width: min(1040px, 94vw); margin: 18px auto 24px; }
.hero {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid var(--line);
}
.hero img { width: 100%; display: block; max-height: 560px; object-fit: cover; }
.overlay {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 22px clamp(18px,4vw,36px);
  color: #fff;
  background: linear-gradient(180deg, transparent, rgba(8,20,12,.78));
}
.kicker { margin: 0; font-size: 12px; letter-spacing: .14em; color: #b9efce; font-weight: 700; }
h1 { margin: 8px 0; font-size: clamp(28px,5vw,48px); line-height: 1.1; }
.section {
  margin-top: 18px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  overflow: hidden;
}
.section.reverse .media { order: 2; }
.section.reverse .text { order: 1; }
.media img { width: 100%; height: 100%; min-height: 280px; object-fit: cover; display: block; }
.text { padding: 18px clamp(16px,3vw,28px); }
.text h2 { margin-top: 0; }
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.chip {
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  border-radius: 999px;
  padding: 7px 12px;
  font: inherit;
  cursor: pointer;
}
.chip.on { background: var(--green); color: #fff; border-color: var(--green); }
.card {
  border: 1px dashed var(--line);
  background: #fff;
  border-radius: 14px;
  padding: 14px;
}
.card h3 { margin-top: 0; color: var(--green); }
.timeline {
  list-style: none;
  padding: 0;
  margin: 0 0 10px;
  display: grid;
  gap: 6px;
}
.timeline li {
  border: 1px solid var(--line);
  border-left: 4px solid transparent;
  padding: 8px 10px;
  background: #fff;
  cursor: pointer;
}
.timeline li.active {
  border-left-color: var(--green);
  background: var(--soft);
}
#timeDesc { margin: 0; color: var(--muted); }
.faq { display: grid; gap: 8px; }
.faq-q {
  width: 100%;
  text-align: left;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  border-radius: 10px;
  padding: 10px 12px;
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height .25s ease;
  padding: 0 10px;
  color: var(--muted);
}
input[type=range] { width: 100%; accent-color: var(--green); }
output { display: block; margin-top: 8px; color: var(--green); font-weight: 700; }
a { color: var(--green); }
.muted { color: var(--muted); font-size: 14px; }
footer { text-align: center; color: var(--muted); font-size: 13px; padding: 0 16px 26px; }
.reveal { opacity: 0; transform: translateY(12px); transition: .4s ease; }
.reveal.show { opacity: 1; transform: none; }
@media (max-width: 820px) { .section { grid-template-columns: 1fr; } .section.reverse .media,.section.reverse .text { order: initial; } }