:root {
  --ink: #102033;
  --muted: #607087;
  --line: #d9e4ef;
  --surface: #ffffff;
  --surface-soft: #f5fbff;
  --blue: #246bfe;
  --cyan: #15bfd6;
  --green: #34c779;
  --yellow: #ffd166;
  --shadow: 0 24px 80px rgba(31, 91, 145, 0.16);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", system-ui, sans-serif;
  background:
    radial-gradient(circle at 12% 8%, rgba(83, 201, 255, 0.24), transparent 30%),
    radial-gradient(circle at 90% 16%, rgba(52, 199, 121, 0.18), transparent 26%),
    linear-gradient(180deg, #f7fcff 0%, #ffffff 42%, #f5fbff 100%);
  letter-spacing: 0;
  word-break: keep-all;
  line-break: strict;
}

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

img {
  display: block;
  max-width: 100%;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 40px));
  min-height: 72px;
  margin: 16px auto 0;
  padding: 12px 16px;
  border: 1px solid rgba(217, 228, 239, 0.82);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
  box-shadow: 0 18px 50px rgba(45, 95, 145, 0.1);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 12px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  box-shadow: 0 10px 30px rgba(36, 107, 254, 0.28);
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 700;
}

.nav a:hover,
.nav a:focus-visible {
  color: var(--blue);
}

.header-cta,
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 800;
  line-height: 1.2;
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.header-cta {
  padding: 0 18px;
  color: #ffffff;
  background: var(--ink);
}

.button {
  padding: 0 22px;
}

.button:hover,
.header-cta:hover {
  transform: translateY(-2px);
}

.primary {
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  box-shadow: 0 16px 38px rgba(36, 107, 254, 0.25);
}

.secondary {
  color: var(--blue);
  background: #ffffff;
  border-color: rgba(36, 107, 254, 0.18);
  box-shadow: 0 14px 32px rgba(31, 91, 145, 0.1);
}

.ghost {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.55);
  border-color: var(--line);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, 520px);
  align-items: center;
  gap: 48px;
  width: min(1180px, calc(100% - 40px));
  min-height: calc(100vh - 108px);
  margin: 0 auto;
  padding: 72px 0 56px;
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 0.82rem;
  font-weight: 900;
  text-transform: uppercase;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  max-width: 820px;
  margin-bottom: 18px;
  font-size: clamp(3.25rem, 5.9vw, 5.6rem);
  line-height: 1.04;
  word-break: keep-all;
  text-wrap: balance;
}

h2 {
  margin-bottom: 18px;
  font-size: clamp(2rem, 3.4vw, 3.2rem);
  line-height: 1.14;
  word-break: keep-all;
  text-wrap: balance;
}

h3 {
  margin-bottom: 10px;
  font-size: 1.25rem;
  word-break: keep-all;
}

.text-line {
  display: block;
  white-space: nowrap;
}

.hero-lead {
  margin-bottom: 14px;
  color: #123d71;
  font-size: clamp(1.25rem, 2.6vw, 2rem);
  font-weight: 800;
}

.hero-description,
.intro p,
.section-heading p,
.video-panel p,
.secret-card p,
.final-cta p {
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.75;
  word-break: keep-all;
  overflow-wrap: normal;
  text-wrap: pretty;
}

.hero-description {
  max-width: 680px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.hero-proof {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.hero-proof span {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid rgba(36, 107, 254, 0.14);
  border-radius: 999px;
  color: #123d71;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 12px 28px rgba(31, 91, 145, 0.08);
  font-size: 0.9rem;
  font-weight: 900;
}

.hero-visual {
  position: relative;
  padding: 10px;
  border: 1px solid rgba(217, 228, 239, 0.86);
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.72);
  box-shadow: var(--shadow);
}

.hero-carousel {
  overflow: hidden;
}

.carousel-track {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 760 / 620;
  border-radius: 24px;
  background: #0b0c13;
}

.carousel-slide {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transform: scale(1.02);
  transition: opacity 700ms ease, transform 900ms ease;
}

.carousel-slide.is-active {
  opacity: 1;
  transform: scale(1);
}

.carousel-dots {
  position: absolute;
  right: 28px;
  bottom: 28px;
  display: flex;
  gap: 8px;
  padding: 8px 10px;
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 999px;
  background: rgba(10, 11, 18, 0.62);
  backdrop-filter: blur(12px);
}

.carousel-dots span {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.34);
  transition: width 240ms ease, background 240ms ease;
}

.carousel-dots span.is-active {
  width: 22px;
  background: #a78bff;
}

.section,
.section-narrow,
.final-cta {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
}

.section {
  padding: 96px 0;
}

.section-narrow {
  padding: 28px 36px;
  border: 1px solid var(--line);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 16px 48px rgba(31, 91, 145, 0.1);
}

.intro p {
  max-width: 880px;
  margin-bottom: 0;
  font-size: 1.24rem;
  font-weight: 700;
}

.intro-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 24px;
}

.intro-flow span {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 48px;
  border: 1px solid rgba(36, 107, 254, 0.13);
  border-radius: 16px;
  color: var(--blue);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(238, 246, 255, 0.86));
  font-weight: 900;
}

.section-heading {
  max-width: 680px;
  margin-bottom: 34px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.feature-card {
  min-height: 244px;
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.86);
  box-shadow: 0 16px 48px rgba(31, 91, 145, 0.08);
}

.feature-card.wide {
  grid-column: span 1;
  background: linear-gradient(135deg, rgba(36, 107, 254, 0.08), rgba(21, 191, 214, 0.08)), #ffffff;
}

.feature-card p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.65;
  word-break: keep-all;
  overflow-wrap: normal;
  text-wrap: pretty;
}

.icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  margin-bottom: 26px;
  border-radius: 14px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  font-size: 0.86rem;
  font-weight: 900;
}

.split-section {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  align-items: start;
  gap: 44px;
}

.sticky-heading {
  position: sticky;
  top: 120px;
}

.step-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: steps;
}

.step-list li {
  counter-increment: steps;
  display: grid;
  grid-template-columns: 54px 1fr;
  align-items: center;
  min-height: 74px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: #ffffff;
  box-shadow: 0 14px 40px rgba(31, 91, 145, 0.08);
}

.step-list li::before {
  content: counter(steps, decimal-leading-zero);
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 14px;
  color: var(--blue);
  background: #eef6ff;
  font-weight: 900;
}

.step-list span {
  font-size: 1.08rem;
  font-weight: 800;
}

.video-section {
  padding-top: 44px;
}

.video-panel,
.secret-card,
.final-cta {
  border: 1px solid rgba(217, 228, 239, 0.9);
  border-radius: 32px;
  background:
    linear-gradient(135deg, rgba(255, 209, 102, 0.16), transparent 36%),
    linear-gradient(135deg, rgba(36, 107, 254, 0.08), rgba(21, 191, 214, 0.1)),
    #ffffff;
  box-shadow: var(--shadow);
}

.video-panel {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding: 42px;
}

.video-copy {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.video-copy p {
  max-width: 760px;
}

.video-embed {
  position: relative;
  overflow: hidden;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(217, 228, 239, 0.92);
  border-radius: 28px;
  background: #102033;
  box-shadow: 0 24px 64px rgba(16, 32, 51, 0.18);
}

.video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-topics {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.video-topics span {
  margin: 0;
  padding: 18px;
  border: 1px solid rgba(217, 228, 239, 0.9);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
  color: var(--ink);
  font-weight: 800;
  line-height: 1.45;
  word-break: keep-all;
  overflow-wrap: normal;
}

.secret-section {
  padding-top: 40px;
}

.secret-card {
  max-width: 880px;
  padding: 42px;
}

.free-code-callout {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 8px 0 14px;
  padding: 16px 20px;
  border: 1px solid rgba(52, 199, 121, 0.22);
  border-radius: 18px;
  color: #075f3b;
  background:
    linear-gradient(135deg, rgba(52, 199, 121, 0.18), rgba(21, 191, 214, 0.1)),
    rgba(255, 255, 255, 0.72);
  box-shadow: 0 16px 34px rgba(31, 91, 145, 0.08);
}

.free-code-callout strong {
  font-size: 1.1rem;
  line-height: 1.35;
}

.free-code-callout span {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 0 12px;
  border-radius: 999px;
  color: #ffffff;
  background: var(--green);
  font-size: 0.92rem;
  font-weight: 900;
}

.notice {
  display: inline-flex;
  margin: 8px 0 22px;
  padding: 14px 18px;
  border-radius: 16px;
  color: #0f6c45 !important;
  background: rgba(52, 199, 121, 0.12);
  font-weight: 900;
}

.recommend-section {
  position: relative;
}

.recommend-shell {
  position: relative;
  overflow: hidden;
  display: grid;
  grid-template-columns: 0.78fr 1.22fr;
  gap: 34px;
  padding: 44px;
  border: 1px solid rgba(217, 228, 239, 0.9);
  border-radius: 36px;
  background:
    linear-gradient(135deg, rgba(36, 107, 254, 0.08), transparent 34%),
    linear-gradient(155deg, rgba(52, 199, 121, 0.1), rgba(255, 255, 255, 0.72) 38%, rgba(21, 191, 214, 0.11)),
    #ffffff;
  box-shadow: var(--shadow);
}

.recommend-shell::before {
  content: "";
  position: absolute;
  top: 28px;
  right: 36px;
  width: 180px;
  height: 180px;
  border: 1px solid rgba(36, 107, 254, 0.16);
  border-radius: 44px;
  transform: rotate(12deg);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.74), rgba(238, 246, 255, 0.34));
}

.recommend-copy {
  position: relative;
  z-index: 1;
  align-self: center;
}

.recommend-copy p:not(.eyebrow) {
  max-width: 360px;
  color: var(--muted);
  font-size: 1.06rem;
  line-height: 1.75;
  font-weight: 700;
}

.recommend-list {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.recommend-card {
  position: relative;
  overflow: hidden;
  min-height: 188px;
  padding: 24px;
  border: 1px solid rgba(217, 228, 239, 0.92);
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 16px 40px rgba(31, 91, 145, 0.08);
}

.recommend-card::after {
  content: "";
  position: absolute;
  right: -32px;
  bottom: -36px;
  width: 116px;
  height: 116px;
  border-radius: 32px;
  background: linear-gradient(135deg, rgba(36, 107, 254, 0.1), rgba(21, 191, 214, 0.14));
  transform: rotate(18deg);
}

.recommend-card.highlight {
  grid-column: span 2;
  background:
    linear-gradient(135deg, rgba(36, 107, 254, 0.11), rgba(21, 191, 214, 0.12)),
    rgba(255, 255, 255, 0.88);
}

.recommend-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  margin-bottom: 22px;
  border-radius: 16px;
  color: #ffffff;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  box-shadow: 0 14px 30px rgba(36, 107, 254, 0.22);
  font-size: 0.84rem;
  font-weight: 900;
}

.recommend-card h3 {
  position: relative;
  z-index: 1;
  margin-bottom: 10px;
}

.recommend-card p {
  position: relative;
  z-index: 1;
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.65;
  font-weight: 700;
}

.final-cta {
  margin-bottom: 56px;
  padding: 54px;
  text-align: center;
}

.final-cta p {
  max-width: 760px;
  margin-right: auto;
  margin-left: auto;
}

.final-cta .hero-actions {
  justify-content: center;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 28px 0 40px;
  color: var(--muted);
  font-weight: 700;
}

@media (max-width: 980px) {
  .site-header {
    align-items: flex-start;
    border-radius: 20px;
  }

  .nav {
    display: none;
  }

  .hero,
  .split-section {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 56px;
  }

  .hero-visual {
    max-width: 620px;
  }

  .feature-grid,
  .video-topics,
  .recommend-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .recommend-shell {
    grid-template-columns: 1fr;
  }

  .recommend-copy p:not(.eyebrow) {
    max-width: 620px;
  }

  .feature-card.wide {
    grid-column: span 2;
  }

  .sticky-heading {
    position: static;
  }
}

@media (max-width: 640px) {
  .site-header,
  .hero,
  .section,
  .section-narrow,
  .final-cta,
  .site-footer {
    width: min(100% - 28px, 1180px);
  }

  .site-header {
    margin-top: 10px;
  }

  .header-cta {
    display: none;
  }

  h1 {
    font-size: clamp(2.45rem, 12vw, 3.55rem);
  }

  h2 {
    font-size: clamp(1.85rem, 9vw, 2.65rem);
  }

  .text-line {
    white-space: normal;
  }

  .hero-actions,
  .final-cta .hero-actions {
    display: grid;
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .feature-grid,
  .video-topics,
  .recommend-list {
    grid-template-columns: 1fr;
  }

  .intro-flow {
    grid-template-columns: 1fr 1fr;
  }

  .recommend-shell {
    padding: 26px;
    border-radius: 24px;
  }

  .recommend-card,
  .recommend-card.highlight {
    grid-column: span 1;
  }

  .feature-card.wide {
    grid-column: span 1;
  }

  .section {
    padding: 72px 0;
  }

  .section-narrow,
  .video-panel,
  .secret-card,
  .final-cta {
    padding: 28px;
    border-radius: 24px;
  }

  .step-list li {
    grid-template-columns: 1fr;
    gap: 14px;
  }

  .site-footer {
    display: grid;
  }
}