* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Pretendard, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  color: var(--text);
}

.roadmap-section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 64px 20px 90px;
}

.scroll-helper {
  overflow-x: auto;
  padding-bottom: 20px;
}

.grid-container {
  display: grid;
  grid-template-columns: 180px repeat(4, minmax(180px, 1fr));
  gap: 16px;
  min-width: 1080px;
  align-items: stretch;
}

.grid-empty {
  min-height: 1px;
}

.q-head {
  padding: 14px 16px;
  border-radius: 12px;
  text-align: center;
  font-weight: 600;
  font-size: 14px;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #243042;
  background: #fff;
  border: 1px solid #e6edf5;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.04);
}

.q1 {
  background: color-mix(in srgb, var(--pink) 14%, #ffffff 86%);
  border: solid 0.7px var(--pink);
}

.q2 {
  background: color-mix(in srgb, var(--yellow) 16%, #ffffff 84%);
  border: solid 0.7px var(--yellow);
}

.q3 {
  background: color-mix(in srgb, var(--mint) 16%, #ffffff 84%);
  border: solid 0.7px var(--mint);
}

.q4 {
  background: color-mix(in srgb, var(--blue) 14%, #ffffff 86%);
  border: solid 0.7px var(--blue);
}

.track-label {
  border-radius: 15px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-weight: 650;
  font-size: 17px;
  text-align: center;
  position: relative;
  min-height: 124px;
  padding: 20px 16px;
  color: var(--text);
  background: var(--soft-blue);
  border: 1.5px solid transparent;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.04);
}

.track-label::after {
  content: "↓";
  position: absolute;
  bottom: -30px;
  color: #cbd5e0;
  font-size: 20px;
  z-index: 1;
  padding-bottom: 10px;
}

.track-label.no-arrow::after,
.track-label.last::after {
  display: none;
}

.track-label.link {
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease, background 0.24s ease, color 0.24s ease;
}

.track-label.card-pink,
.track-label.card-yellow,
.track-label.card-mint,
.track-label.card-blue {
  color: #3f3f46;
}

.track-label.card-pink:hover {
  border-color: var(--pink);
  background: color-mix(in srgb, var(--pink) 8%, #ffffff 92%);
  color: #5a4450;
}

.track-label.card-yellow:hover {
  border-color: var(--yellow);
  background: color-mix(in srgb, var(--yellow) 10%, #ffffff 90%);
  color: #5b4b31;
}

.track-label.card-mint:hover {
  border-color: var(--mint);
  background: color-mix(in srgb, var(--mint) 10%, #ffffff 90%);
  color: #315056;
}

.track-label.card-blue:hover {
  border-color: var(--brand);
  background: color-mix(in srgb, var(--brandDark) 10%, #ffffff 90%);
  color: #264867;
}

.track-label.link:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 28px rgba(15, 23, 42, 0.08);
}

.cell {
  background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
  border: 1px solid color-mix(in srgb, var(--point-soft) 78%, #dbe5ef 22%);
  border-radius: 15px;
  padding: 20px;
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease, background 0.22s ease;
  min-height: 124px;
  box-shadow: 0 10px 22px rgba(15, 23, 42, 0.03);
}

.cell:hover {
  background: linear-gradient(180deg, #ffffff 0%, color-mix(in srgb, var(--point-soft) 30%, #ffffff 70%) 100%);
  border-color: var(--point);
  transform: translateY(-4px);
  box-shadow: 0 16px 26px rgba(15, 23, 42, 0.07);
}

.cell.soft {
  background: linear-gradient(180deg, color-mix(in srgb, var(--point-soft) 34%, #ffffff 66%), #ffffff);
}

.cell.span-2 {
  grid-column: span 2;
}

.unit-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.unit-list li {
  font-size: 15px;
  font-weight: 600;
  color: #475569;
  margin-bottom: 9px;
  display: flex;
  align-items: flex-start;
  line-height: 1.6;
}

.unit-list li:last-child {
  margin-bottom: 0;
}

.unit-list li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--point);
  margin-right: 10px;
  margin-top: 9px;
  flex-shrink: 0;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.mini-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  background: color-mix(in srgb, var(--brand) 45%, #ffffff 88%);
  color: #49658a;
  border: 1px solid color-mix(in srgb, var(--brand) 24%, #ffffff 76%);
}

.row-divider {
  grid-column: 1 / -1;
  height: 1px;
  margin: 20px 0 16px;
  background: linear-gradient(90deg, transparent, rgba(148, 163, 184, 0.35), transparent);
  position: relative;
}

.mobile-roadmap {
  display: none;
}

@media (max-width: 768px) {
  body {
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
  }

  .roadmap-section {
    padding: 34px 14px 56px;
  }

  .roadmap-section .desktop-roadmap {
    display: none !important;
  }

  .roadmap-section .mobile-roadmap {
    display: flex;
    flex-direction: column;
    gap: 14px;
  }

  .mobile-course {
    border-radius: 24px;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid #e8eef6;
    box-shadow: 0 14px 30px rgba(15, 23, 42, 0.065);
    overflow: hidden;
  }

  .mobile-course-header {
    width: 100%;
    border: 0;
    background: #fff;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 18px 18px;
    cursor: pointer;
    font: inherit;
    color: #3f3f46;
    text-align: left;
  }

  .mobile-course-header .title-wrap {
    display: flex;
    align-items: center;
    gap: 11px;
    min-width: 0;
  }

  .course-dot {
    width: 12px;
    height: 12px;
    border-radius: 999px;
    flex-shrink: 0;
    background: var(--brand);
    box-shadow: 0 0 0 6px color-mix(in srgb, var(--brand) 16%, transparent 84%);
  }

  .mobile-course.card-pink .course-dot {
    background: var(--pink);
    box-shadow: 0 0 0 6px color-mix(in srgb, var(--pink) 18%, transparent 82%);
  }

  .mobile-course.card-yellow .course-dot {
    background: var(--yellow);
    box-shadow: 0 0 0 6px color-mix(in srgb, var(--yellow) 22%, transparent 78%);
  }

  .mobile-course.card-mint .course-dot {
    background: var(--mint);
    box-shadow: 0 0 0 6px color-mix(in srgb, var(--mint) 20%, transparent 80%);
  }

  .mobile-course.card-blue .course-dot {
    background: var(--brand);
    box-shadow: 0 0 0 6px color-mix(in srgb, var(--brand) 18%, transparent 82%);
  }

  .course-title {
    font-size: 17px;
    font-weight: 800;
    letter-spacing: -0.02em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }

  .course-action {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
  }

  .course-link {
    color: #64748b;
    text-decoration: none;
    font-size: 12px;
    font-weight: 800;
    padding: 6px 9px;
    border-radius: 999px;
    background: #f8fafc;
    border: 1px solid #edf2f7;
  }

  .chevron {
    width: 26px;
    height: 26px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #f8fafc;
    color: #64748b;
    transition: transform 0.28s ease, background 0.28s ease;
  }

  .mobile-course.open .chevron {
    transform: rotate(180deg);
    background: #eef6ff;
    color: var(--dark-blue);
  }

  .mobile-course-panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.42s ease;
  }

  .mobile-course.open .mobile-course-panel {
    max-height: 900px;
  }

  .quarter-list {
    padding: 0 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .quarter-card {
    position: relative;
    padding: 44px 16px 16px;
    border-radius: 20px;
    background: linear-gradient(180deg, #ffffff 0%, #fbfdff 100%);
    border: 1px solid color-mix(in srgb, var(--point-soft) 78%, #dbe5ef 22%);
    box-shadow: 0 8px 18px rgba(15, 23, 42, 0.04);
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.26s ease, transform 0.26s ease;
  }

  .mobile-course.open .quarter-card {
    opacity: 1;
    transform: translateY(0);
  }

  .mobile-course.open .quarter-card:nth-child(1) {
    transition-delay: 0.03s;
  }

  .mobile-course.open .quarter-card:nth-child(2) {
    transition-delay: 0.08s;
  }

  .mobile-course.open .quarter-card:nth-child(3) {
    transition-delay: 0.13s;
  }

  .mobile-course.open .quarter-card:nth-child(4) {
    transition-delay: 0.18s;
  }

  .quarter-label {
    position: absolute;
    top: 13px;
    left: 16px;
    display: inline-flex;
    align-items: center;
    min-height: 24px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 900;
    color: #49658a;
    background: color-mix(in srgb, var(--brand) 18%, #ffffff 82%);
    border: 1px solid color-mix(in srgb, var(--brand) 22%, #ffffff 78%);
  }

  .quarter-card .unit-list li {
    font-size: 14px;
    margin-bottom: 7px;
    line-height: 1.55;
  }

  .quarter-card .mini-badge {
    font-size: 11px;
    padding: 5px 9px;
  }
}

@media (max-width: 420px) {
  .roadmap-section {
    padding-left: 12px;
    padding-right: 12px;
  }

  .course-title {
    font-size: 16px;
  }

  .mobile-course-header {
    padding: 17px 15px;
  }

  .course-link {
    display: none;
  }
}