/* level11.co.kr — INLEVEL9 identity: lime #C4FC79, grays #EEEEEE/#AAAAAA/#494949, cool black #222222.
   Pretendard (KR) / Helvetica Neue (EN); D2Coding for code. Motion: ease-out, ≤300ms, transform/opacity only. */
:root {
  --lime: #c4fc79;
  --lime-strong: #b3f55c;
  --lime-12: rgba(196, 252, 121, 0.12);
  --lime-25: rgba(196, 252, 121, 0.25);
  --black: #222222;
  --canvas: #181818;
  --card: #222222;
  --raised: #2b2b2b;
  --line: #303030;
  --line-strong: #494949;
  --gray: #aaaaaa;
  --light: #eeeeee;
  --text: #eeeeee;
  --muted: #aaaaaa;
  --font: 'Pretendard Variable', Pretendard, 'Helvetica Neue', -apple-system, BlinkMacSystemFont, 'Apple SD Gothic Neo', 'Segoe UI', sans-serif;
  --mono: 'D2Coding', 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius: 14px;
  --wrap: 1120px;
}
html[lang='en'] {
  --font: 'Helvetica Neue', 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--canvas);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  word-break: keep-all;
  overflow-wrap: anywhere;
}
a {
  color: inherit;
  text-decoration: none;
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
h1,
h2,
h3 {
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0;
}
h1 {
  font-size: clamp(36px, 6vw, 64px);
}
h2 {
  font-size: clamp(26px, 3.4vw, 36px);
}
h3 {
  font-size: 18px;
}
p {
  margin: 0;
}
.wrap {
  width: min(var(--wrap), calc(100% - 32px));
  margin: 0 auto;
}
.row {
  display: flex;
  align-items: center;
  gap: 16px;
}
.skip {
  position: absolute;
  left: -999px;
  top: 8px;
  background: var(--lime);
  color: var(--black);
  padding: 8px 12px;
  border-radius: 8px;
}
.skip:focus {
  left: 8px;
  z-index: 10;
}

/* header */
.top {
  position: sticky;
  top: 0;
  z-index: 5;
  background: rgba(24, 24, 24, 0.82);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.top .row {
  height: 60px;
  justify-content: space-between;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}
.wordmark {
  font-family: 'Helvetica Neue', 'Pretendard Variable', Pretendard, sans-serif;
  font-weight: 800;
  letter-spacing: 0.02em;
  font-size: 18px;
  line-height: 1;
}
.links {
  display: flex;
  gap: 22px;
  color: var(--muted);
  font-size: 15px;
}
.links a {
  transition: color 160ms var(--ease);
}
.links a:hover {
  color: var(--light);
}
.actions {
  display: flex;
  align-items: center;
  gap: 12px;
}
.lang {
  font-size: 13px;
  color: var(--muted);
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  padding: 4px 10px;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}
.lang:hover {
  color: var(--light);
  border-color: var(--gray);
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 48px;
  padding: 0 22px;
  border-radius: 12px;
  border: 1px solid var(--line-strong);
  background: var(--card);
  color: var(--light);
  font-weight: 600;
  font-size: 16px;
  transition: transform 140ms var(--ease), background 160ms var(--ease), border-color 160ms var(--ease);
}
.btn:hover {
  background: var(--raised);
  border-color: var(--gray);
}
.btn:active {
  transform: scale(0.97);
}
.btn.primary {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--black);
}
.btn.primary:hover {
  background: var(--lime-strong);
  border-color: var(--lime-strong);
}
.btn.small {
  height: 36px;
  padding: 0 14px;
  font-size: 14px;
  border-radius: 10px;
}
.btn:focus-visible,
a:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

/* hero */
.hero {
  padding: 96px 0 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: -40% 0 auto;
  height: 80%;
  background: radial-gradient(60% 50% at 50% 40%, var(--lime-12), transparent 70%);
  pointer-events: none;
}
.hero > .wrap {
  position: relative;
}
.hero.compact {
  padding: 72px 0 8px;
  text-align: left;
}
.eyebrow {
  display: inline-block;
  color: var(--lime);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
  border: 1px solid var(--lime-25);
  background: var(--lime-12);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 22px;
}
.hero .lead {
  margin: 22px auto 0;
  max-width: 720px;
  font-size: clamp(17px, 2vw, 20px);
  color: var(--muted);
}
.hero.compact .lead {
  margin-left: 0;
}
.cta-row {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 30px;
  flex-wrap: wrap;
}
.hero.compact .cta-row {
  justify-content: flex-start;
}
.note {
  color: var(--muted);
  font-size: 14px;
  margin-top: 14px;
}
.shot {
  margin: 56px auto 0;
  max-width: 1040px;
  border-radius: var(--radius);
  border: 1px solid var(--line-strong);
  background: var(--black);
  box-shadow: 0 40px 120px rgba(0, 0, 0, 0.55), 0 0 0 1px rgba(196, 252, 121, 0.08);
  overflow: hidden;
}
.shot.small {
  margin: 0;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45);
}

/* strip */
.strip {
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--black);
  padding: 18px 0;
}
.strip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: center;
  color: var(--light);
  font-weight: 600;
  padding: 6px 0;
}
.strip-row .label {
  color: var(--muted);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  min-width: 96px;
}

/* sections */
.section {
  padding: 88px 0;
}
.section.alt {
  background: var(--black);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.section h2 + .lead,
.section .lead {
  color: var(--muted);
  font-size: 18px;
  max-width: 760px;
  margin-top: 14px;
}
.grid {
  display: grid;
  gap: 16px;
  margin-top: 36px;
}
.grid.two {
  grid-template-columns: repeat(2, 1fr);
}
.grid.three {
  grid-template-columns: repeat(3, 1fr);
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 160ms var(--ease), transform 200ms var(--ease);
}
.section.alt .card {
  background: var(--canvas);
}
.card:hover {
  border-color: var(--line-strong);
}
.card h3 {
  margin-bottom: 10px;
}
.card p {
  color: var(--muted);
  font-size: 15px;
}

/* tools */
.tools {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px 32px;
  margin-top: 36px;
}
.tool {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
}
.tool .dot {
  flex: none;
  width: 10px;
  height: 10px;
  margin-top: 8px;
  border-radius: 3px;
  background: var(--lime);
}
.tool b {
  display: block;
  font-size: 16px;
}
.tool p {
  color: var(--muted);
  font-size: 15px;
  margin-top: 2px;
}

/* feature rows (product page) */
.feature {
  padding: 56px 0;
}
.feature-row {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 48px;
  align-items: center;
}
.feature.flip .feature-row {
  grid-template-columns: 1.25fr 1fr;
}
.feature.flip .feature-text {
  order: 2;
}
.feature-text p {
  color: var(--muted);
  margin-top: 14px;
  font-size: 17px;
}

/* code sample */
.code {
  margin: 28px 0 0;
  background: var(--canvas);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 20px 22px;
  overflow: auto;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.7;
  color: var(--light);
}
.code .k {
  color: var(--lime);
}
.code .c {
  color: var(--muted);
}

/* checks / faq */
.checks {
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
  max-width: 820px;
}
.checks li {
  padding-left: 30px;
  position: relative;
  font-size: 17px;
}
.checks li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 16px;
  height: 16px;
  border-radius: 5px;
  background: var(--lime);
  mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8.5l3 3 7-7' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8.5l3 3 7-7' fill='none' stroke='%23000' stroke-width='2.2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / contain no-repeat;
}
.faq {
  margin-top: 28px;
  max-width: 820px;
}
.faq details {
  border-top: 1px solid var(--line);
  padding: 4px 0;
}
.faq details:last-child {
  border-bottom: 1px solid var(--line);
}
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 16px 32px 16px 0;
  font-weight: 600;
  font-size: 17px;
  position: relative;
}
.faq summary::-webkit-details-marker {
  display: none;
}
.faq summary::after {
  content: '+';
  position: absolute;
  right: 4px;
  top: 12px;
  color: var(--lime);
  font-size: 22px;
  transition: transform 200ms var(--ease);
}
.faq details[open] summary::after {
  transform: rotate(45deg);
}
.faq p {
  color: var(--muted);
  padding: 0 0 18px;
}

/* pricing */
.plans {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 36px;
}
.plan {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 28px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.plan.featured {
  border-color: var(--lime);
  box-shadow: 0 0 0 1px var(--lime-25), 0 24px 60px rgba(196, 252, 121, 0.08);
}
.plan-name {
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}
.plan.featured .plan-name {
  color: var(--lime);
}
.plan-price {
  font-size: 38px;
  font-weight: 800;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
}
.plan-price span {
  font-size: 15px;
  color: var(--muted);
  font-weight: 500;
  margin-left: 4px;
  letter-spacing: 0;
}
.plan dl {
  margin: 0;
  display: grid;
  gap: 10px;
  flex: 1;
}
.plan dl div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding-top: 10px;
  font-size: 14px;
}
.plan dt {
  color: var(--muted);
}
.plan dd {
  margin: 0;
  text-align: right;
  font-variant-numeric: tabular-nums;
}
.section .note {
  max-width: 820px;
}

/* cta */
.section.cta {
  text-align: center;
  border-top: 1px solid var(--line);
  background: radial-gradient(60% 80% at 50% 100%, var(--lime-12), transparent 70%);
}
.section.cta .lead {
  margin: 14px auto 0;
}

/* footer */
.foot {
  border-top: 1px solid var(--line);
  padding: 48px 0 32px;
  color: var(--muted);
  font-size: 14px;
}
.foot .top-row {
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 24px;
}
.foot .brand {
  color: var(--light);
}
.foot .slogan {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--muted);
}
.foot .links {
  flex-wrap: wrap;
}
.legal {
  margin-top: 36px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

/* entrances */
@media (prefers-reduced-motion: no-preference) {
  .hero h1,
  .hero .lead,
  .hero .cta-row,
  .hero .eyebrow,
  .hero .shot {
    animation: rise 520ms var(--ease) both;
  }
  .hero .lead {
    animation-delay: 60ms;
  }
  .hero .cta-row {
    animation-delay: 120ms;
  }
  .hero .shot {
    animation-delay: 180ms;
  }
}
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* responsive */
@media (max-width: 900px) {
  .grid.two,
  .grid.three,
  .plans,
  .tools {
    grid-template-columns: 1fr;
  }
  .feature-row,
  .feature.flip .feature-row {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .feature.flip .feature-text {
    order: 0;
  }
  .links {
    display: none;
  }
  .foot .links {
    display: flex;
  }
  .hero {
    padding-top: 64px;
  }
  .section {
    padding: 64px 0;
  }
  .btn {
    height: 46px;
  }
}