:root {
  --paper: oklch(98.7% 0.006 92);
  --surface: oklch(99.2% 0.004 92);
  --ink: oklch(18% 0.025 88);
  --muted: oklch(45% 0.025 88);
  --line: oklch(88% 0.014 88);
  --green: oklch(58% 0.115 154);
  --green-soft: oklch(94% 0.035 154);
  --orange: oklch(65% 0.14 55);
  --orange-soft: oklch(94% 0.044 63);
  --shadow: 0 28px 80px oklch(28% 0.035 88 / 0.12);
  --font: "GoyangDeogyang", "고양덕양체", "Pretendard", "Apple SD Gothic Neo", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
}

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

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

.site-header {
  position: relative;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 72px;
  padding: 0 40px;
  background: oklch(99% 0.004 92 / 0.88);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand,
.nav-links,
.hero-actions,
.tab-controls,
.closing-section {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-weight: 800;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 10px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: inset 0 0 0 1px var(--line);
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.nav-links {
  gap: 20px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.nav-links a:hover {
  color: var(--ink);
}

main {
  overflow: hidden;
}

.hero-section {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(540px, 1.08fr);
  gap: 54px;
  align-items: center;
  max-width: 1440px;
  min-height: calc(100vh - 72px);
  margin: 0 auto;
  padding: 74px 40px 90px;
}

.hero-copy {
  max-width: 690px;
}

.eyebrow,
.kicker,
.product-tag {
  margin: 0 0 16px;
  color: var(--green);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 28px;
  font-size: 64px;
  line-height: 1.04;
  letter-spacing: 0;
}

.hero-title-line {
  display: inline;
}

.lead-line {
  display: inline;
}

h2 {
  margin-bottom: 18px;
  font-size: 42px;
  line-height: 1.12;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 14px;
  font-size: 28px;
  line-height: 1.2;
  letter-spacing: 0;
}

.lead,
.section-heading p,
.product-copy p,
.closing-copy p {
  color: var(--muted);
  font-size: 19px;
  line-height: 1.78;
  word-break: keep-all;
}

.hero-actions {
  gap: 12px;
  margin-top: 34px;
}

.primary-link,
.secondary-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 20px;
  border-radius: 14px;
  font-weight: 850;
}

.primary-link {
  background: var(--ink);
  color: var(--surface);
}

.secondary-link {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
}

.hero-board {
  position: relative;
  min-height: 640px;
}

.screen-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.screen-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.primary-screen {
  position: absolute;
  top: 10px;
  right: 0;
  width: 88%;
  aspect-ratio: 14 / 9;
}

.secondary-screen {
  position: absolute;
  left: 0;
  bottom: 8px;
  width: 58%;
  aspect-ratio: 16 / 10;
}

.screen-label {
  position: absolute;
  left: 18px;
  top: 18px;
  z-index: 2;
  display: grid;
  gap: 3px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 13px;
  background: oklch(99.3% 0.004 92 / 0.9);
}

.screen-label span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.screen-label strong {
  font-size: 14px;
}

.section-block,
.tab-section {
  max-width: 1320px;
  margin: 0 auto;
  padding: 96px 40px;
}

.section-heading {
  max-width: 820px;
  margin-bottom: 34px;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
  overflow: hidden;
}

.comparison-grid article {
  min-height: 270px;
  padding: 30px;
  border-right: 1px solid var(--line);
}

.comparison-grid article:last-child {
  border-right: 0;
}

.comparison-grid h3 {
  font-size: 22px;
}

.comparison-grid p,
.feature-list {
  color: var(--muted);
  font-size: 16px;
  line-height: 1.72;
  word-break: keep-all;
}

.tab-header {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 34px;
}

.tab-header h2 {
  max-width: 760px;
}

.tab-controls {
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface);
}

.tab-button {
  min-width: 96px;
  min-height: 42px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font: 850 14px / 1 var(--font);
}

.tab-button.active {
  background: var(--ink);
  color: var(--surface);
}

.product-panel {
  display: none;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 34px;
  align-items: start;
}

.product-panel.active {
  display: grid;
}

.product-copy {
  position: sticky;
  top: 104px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
}

.product-tag {
  display: inline-flex;
  margin-bottom: 18px;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--green-soft);
}

.product-tag.orange {
  background: var(--orange-soft);
  color: var(--orange);
}

.feature-list {
  display: grid;
  gap: 12px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.feature-list li {
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.feature-list strong {
  color: var(--ink);
}

.gallery-grid {
  display: grid;
  gap: 18px;
}

figure {
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: var(--surface);
}

figure img {
  width: 100%;
  aspect-ratio: 14 / 8.2;
  object-fit: cover;
  object-position: top left;
}

figcaption {
  padding: 16px 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 750;
}

.closing-section {
  justify-content: space-between;
  gap: 36px;
  margin-bottom: 60px;
  border-top: 1px solid var(--line);
}

.closing-copy {
  max-width: 780px;
}