:root {
  color-scheme: light;
  --bg: #f6f7f4;
  --paper: #ffffff;
  --ink: #1e252b;
  --muted: #65717c;
  --line: #dce3dd;
  --green: #176b5b;
  --blue: #2f6690;
  --amber: #aa6b00;
  --red: #a64032;
  --violet: #6956a8;
  --soft-green: #e4f2ed;
  --soft-blue: #e6f0f7;
  --soft-amber: #fff1d8;
  --soft-red: #fbe7e2;
  --soft-violet: #ece9fb;
  --shadow: 0 22px 60px rgba(30, 37, 43, 0.08);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    linear-gradient(180deg, rgba(23, 107, 91, 0.08), transparent 280px),
    var(--bg);
  color: var(--ink);
  font-family:
    "Pretendard",
    "Noto Sans KR",
    "Segoe UI",
    system-ui,
    sans-serif;
}

.roadmap-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 56px;
}

.hero {
  position: relative;
  padding: 28px 0 22px;
}

.top-links {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 28px;
}

.top-links a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  color: var(--green);
  font-weight: 700;
  text-decoration: none;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--green);
  font-size: 14px;
  font-weight: 800;
}

h1 {
  margin: 0;
  font-size: clamp(34px, 6vw, 68px);
  line-height: 1.05;
  letter-spacing: 0;
}

.lead {
  max-width: 760px;
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 18px;
  line-height: 1.7;
}

.study-path {
  position: relative;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
  align-items: stretch;
}

.path-line {
  position: absolute;
  left: 4%;
  right: 4%;
  top: 48%;
  height: 4px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--green), var(--blue), var(--amber), var(--red), var(--violet));
  opacity: 0.22;
}

.path-card {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  gap: 12px;
  min-height: 250px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.path-card h2,
.memory-board h2,
.source-note h2 {
  margin: 0;
  font-size: 22px;
}

.path-card p,
.path-card li,
.source-note p {
  margin: 0;
  color: #46535f;
  line-height: 1.58;
}

.path-card small {
  margin-top: auto;
  color: var(--muted);
  font-weight: 700;
}

.step {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--ink);
  color: #fff;
  font-weight: 900;
}

.intro {
  grid-column: span 4;
  background: #f8fbf9;
}

.region {
  grid-column: span 8;
  background: var(--soft-green);
}

.district,
.zone,
.unit {
  grid-column: span 4;
}

.district {
  background: var(--soft-blue);
}

.zone {
  background: var(--soft-amber);
}

.unit {
  background: var(--soft-violet);
}

.permit {
  grid-column: span 5;
  background: var(--soft-red);
}

.infra {
  grid-column: span 7;
  background: #eef3f7;
}

.mini-grid {
  display: grid;
  grid-template-columns: minmax(92px, auto) 1fr;
  gap: 8px 12px;
  padding: 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
}

.mini-grid b {
  color: var(--green);
}

.tag-cloud,
.zone-list,
.permit-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud span,
.zone-list span,
.permit-grid span {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 10px;
  border: 1px solid rgba(30, 37, 43, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.68);
  font-size: 13px;
  font-weight: 700;
}

.path-card ol {
  margin: 0;
  padding-left: 20px;
}

.compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.compare div {
  padding: 14px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.72);
}

.compare h3 {
  margin: 0 0 8px;
  font-size: 16px;
}

.memory-board,
.source-note {
  margin-top: 18px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--paper);
  box-shadow: var(--shadow);
}

.check-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.check-grid article {
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfcfb;
}

.check-grid h3 {
  margin: 0 0 8px;
  font-size: 17px;
}

.check-grid p {
  margin: 0;
  color: #485662;
  line-height: 1.55;
}

.source-note p {
  margin-top: 10px;
}

@media (max-width: 900px) {
  .study-path,
  .check-grid,
  .compare {
    grid-template-columns: 1fr;
  }

  .path-card,
  .intro,
  .region,
  .district,
  .zone,
  .unit,
  .permit,
  .infra {
    grid-column: 1;
  }

  .path-line {
    top: 0;
    bottom: 0;
    left: 20px;
    right: auto;
    width: 4px;
    height: auto;
    background: linear-gradient(180deg, var(--green), var(--blue), var(--amber), var(--red), var(--violet));
  }
}

@media (max-width: 560px) {
  .roadmap-shell {
    width: min(100% - 20px, 1180px);
    padding-top: 16px;
  }

  .top-links {
    justify-content: flex-start;
  }

  .path-card,
  .memory-board,
  .source-note {
    padding: 16px;
  }

  .path-card {
    min-height: auto;
  }

  .mini-grid {
    grid-template-columns: 1fr;
  }
}