:root {
  --bg: #0b1220;
  --bg2: #0f1a33;
  --card: rgba(255, 255, 255, 0.06);
  --card2: rgba(255, 255, 255, 0.08);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.72);
  --muted2: rgba(255, 255, 255, 0.6);
  --border: rgba(255, 255, 255, 0.12);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
  --accent: #7c5cff;
  --accent2: #2be7ff;
  --danger: #ff4d6d;
  --radius: 18px;
  --radius2: 14px;
  --container: 1120px;
  --safeBottom: env(safe-area-inset-bottom, 0px);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, "Noto Sans KR",
    "Apple SD Gothic Neo", Arial, "Helvetica Neue", Helvetica, sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 700px at 15% 10%, rgba(124, 92, 255, 0.28), transparent 55%),
    radial-gradient(900px 600px at 95% 25%, rgba(43, 231, 255, 0.16), transparent 50%),
    linear-gradient(180deg, var(--bg) 0%, #070b14 100%);
  line-height: 1.6;

  /* fixed CTA가 항상 보여도 콘텐츠가 가려지지 않도록 */
  padding-bottom: calc(88px + var(--safeBottom));
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: min(var(--container), calc(100% - 40px));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(11, 18, 32, 0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.topbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 240px;
}

.brand__mark {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  background-color: rgba(255, 255, 255, 0.04);
  background-image: url("./band.png"),
    linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  background-size: cover, auto;
  background-position: center, center;
  background-repeat: no-repeat, no-repeat;
  box-shadow: 0 10px 26px rgba(124, 92, 255, 0.25);
}

.brand__title {
  font-weight: 800;
  letter-spacing: -0.2px;
  font-size: 14px;
  line-height: 1.1;
}
.brand__subtitle {
  margin-top: 2px;
  font-size: 12px;
  color: var(--muted2);
}

.nav {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: flex-end;
}
.nav__link {
  font-size: 13px;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid transparent;
}
.nav__link:hover {
  color: var(--text);
  border-color: var(--border);
  background: rgba(255, 255, 255, 0.04);
}

.hero {
  padding: 52px 0 24px;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 22px;
  align-items: stretch;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
  font-size: 12px;
  margin: 0 0 14px;
}

.hero__title {
  margin: 0 0 14px;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.15;
  letter-spacing: -0.6px;
}
.accent {
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero__desc {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 15px;
  max-width: 62ch;
}

.hero__ctaRow {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  margin: 0 0 18px;
}

.btn {
  appearance: none;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  border-radius: 14px;
  padding: 10px 14px;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  transition: transform 0.06s ease, background 0.2s ease, border-color 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.btn:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.18);
}
.btn:active {
  transform: translateY(1px);
}
.btn--primary {
  border: 0;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent2) 100%);
  box-shadow: 0 14px 36px rgba(124, 92, 255, 0.28);
}
.btn--primary:hover {
  filter: brightness(1.03);
}
.btnIcon {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  border-radius: 6px;
  background-image: url("./band.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.22);
}
.btnIcon--onDark {
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.26);
}
.btnText {
  display: inline-block;
}

@keyframes ctaPulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.06);
  }
  100% {
    transform: scale(1);
  }
}

.btn--pulse {
  animation: ctaPulse 1.05s ease-in-out infinite;
  will-change: transform;
}
.btn--pulse:hover {
  animation-duration: 0.95s;
}
.btn--pulse:active {
  animation: none;
  transform: scale(0.98);
}

.btn--ghost {
  background: rgba(255, 255, 255, 0.02);
}
.btn--lg {
  padding: 12px 16px;
  font-size: 15px;
  border-radius: 16px;
}

.hero__highlights {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 8px;
}
.kpi {
  padding: 12px 12px;
  border-radius: var(--radius2);
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.03);
}
.kpi__label {
  font-size: 12px;
  color: var(--muted2);
}
.kpi__value {
  font-size: 13px;
  font-weight: 800;
  margin-top: 4px;
}

.hero__card .card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.07), rgba(255, 255, 255, 0.03));
  box-shadow: var(--shadow);
  padding: 18px;
  height: 100%;
}
.card__title {
  font-weight: 900;
  letter-spacing: -0.2px;
  margin: 0 0 10px;
}
.checklist {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}
.checklist li {
  padding-left: 24px;
  position: relative;
  color: var(--muted);
  font-size: 14px;
}
.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: rgba(43, 231, 255, 0.9);
  font-weight: 900;
}
.card__note {
  margin-top: 12px;
  font-size: 12px;
  color: var(--muted2);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 12px;
}

.section {
  padding: 44px 0;
}
.section--alt {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.03), rgba(255, 255, 255, 0));
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.section__head {
  margin-bottom: 18px;
}
.section__title {
  margin: 0 0 8px;
  font-size: 24px;
  letter-spacing: -0.4px;
}
.section__desc {
  margin: 0;
  color: var(--muted);
  max-width: 80ch;
}

.grid3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.grid2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 18px;
}
.feature,
.panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  background: rgba(255, 255, 255, 0.03);
}
.feature__title,
.panel__title {
  font-weight: 900;
  margin: 0 0 8px;
  letter-spacing: -0.2px;
}
.feature__desc {
  color: var(--muted);
  margin: 0;
  font-size: 14px;
}
.bullets {
  margin: 0;
  padding: 0 0 0 18px;
  color: var(--muted);
  display: grid;
  gap: 8px;
}

.steps {
  display: grid;
  gap: 10px;
  margin-top: 18px;
}
.step {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.03);
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 12px;
}
.step__num {
  width: 44px;
  height: 44px;
  border-radius: 16px;
  display: grid;
  place-items: center;
  font-weight: 900;
  background: rgba(124, 92, 255, 0.16);
  border: 1px solid rgba(124, 92, 255, 0.28);
}
.step__title {
  font-weight: 900;
  margin: 0 0 4px;
}
.step__desc {
  color: var(--muted);
  margin: 0;
  font-size: 14px;
}

.curriculum {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.chip {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  font-weight: 700;
  font-size: 13px;
}

.join {
  padding-bottom: 22px;
}
.join__inner {
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 24px;
  background: radial-gradient(700px 250px at 20% 0%, rgba(124, 92, 255, 0.22), transparent 55%),
    radial-gradient(600px 260px at 95% 50%, rgba(43, 231, 255, 0.12), transparent 55%),
    rgba(255, 255, 255, 0.03);
  padding: 18px;
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  align-items: center;
  gap: 16px;
}
.fineprint {
  margin-top: 10px;
  color: var(--muted2);
  font-size: 12px;
}

.footer {
  padding: 22px 0 18px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}
.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.footer__brand {
  font-weight: 900;
}
.footer__meta {
  color: var(--muted2);
  font-size: 12px;
  margin-top: 4px;
}
.link {
  appearance: none;
  background: transparent;
  border: 0;
  padding: 8px 6px;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 700;
  cursor: pointer;
}
.link:hover {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.sep {
  color: rgba(255, 255, 255, 0.25);
}

.fixedCta {
  position: fixed;
  left: 50%;
  transform: translateX(-50%);
  bottom: calc(14px + var(--safeBottom));
  z-index: 30;
  width: min(560px, calc(100% - 24px));
  pointer-events: none;
}
.fixedCta__btn {
  width: 100%;
  pointer-events: auto;
  border: 0;
  border-radius: 18px;
  padding: 14px 16px;
  font-weight: 900;
  letter-spacing: -0.2px;
  font-size: 15px;
  cursor: pointer;
  color: rgba(0, 0, 0, 0.85);
  background: linear-gradient(135deg, #7c5cff 0%, #2be7ff 100%);
  box-shadow: 0 18px 48px rgba(124, 92, 255, 0.35);
  transition: transform 0.06s ease, filter 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}
.fixedCta__btn:hover {
  filter: brightness(1.03);
}
.fixedCta__btn:active {
  transform: translateY(1px);
}

@keyframes fixedCtaPulse {
  0% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(0) scale(1.05);
  }
  100% {
    transform: translateY(0) scale(1);
  }
}
.fixedCta__btn--pulse {
  animation: fixedCtaPulse 1.0s ease-in-out infinite;
  will-change: transform;
}
.fixedCta__btn--pulse:hover {
  animation-duration: 0.92s;
}
.fixedCta__btn--pulse:active {
  animation: none;
  transform: translateY(1px) scale(0.98);
}

.modalOverlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  display: grid;
  place-items: center;
  padding: 18px;
  z-index: 50;
}
.modalOverlay[hidden] {
  display: none !important;
}
.modal {
  width: min(860px, 100%);
  max-height: min(82vh, 720px);
  overflow: hidden;
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.16);
  background: rgba(15, 26, 51, 0.94);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
  display: grid;
  grid-template-rows: auto 1fr auto;
}
.modal__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}
.modal__title {
  font-weight: 900;
  letter-spacing: -0.2px;
}
.modal__body {
  padding: 14px 16px;
  overflow: auto;
  color: rgba(255, 255, 255, 0.85);
}

.heroArt {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.02);
  margin-bottom: 12px;
}
.modal__body h3 {
  margin: 14px 0 8px;
  font-size: 15px;
}
.modal__body p,
.modal__body li {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.78);
}
.modal__body ul {
  margin: 8px 0 0;
  padding-left: 18px;
  display: grid;
  gap: 6px;
}
.modal__foot {
  padding: 12px 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  justify-content: flex-end;
}
.iconBtn {
  width: 36px;
  height: 36px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.9);
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
}
.iconBtn:hover {
  background: rgba(255, 255, 255, 0.07);
}

@media (max-width: 980px) {
  .hero__grid {
    grid-template-columns: 1fr;
  }
  .hero__highlights {
    grid-template-columns: 1fr;
  }
  .grid3 {
    grid-template-columns: 1fr;
  }
  .grid2 {
    grid-template-columns: 1fr;
  }
  .join__inner {
    grid-template-columns: 1fr;
  }
  .brand {
    min-width: auto;
  }
  .nav {
    display: none;
  }
}