:root {
  --ink: #1c2430;
  --ink-soft: #5c6670;
  --cream: #ffffff;
  --sun: #ffe566;
  --sun-deep: #e6a800;
  --sun-soft: #fff8e1;
  --coral: #ff8a65;
  --sky: #5b8def;
  --leaf: #3d9a78;
  --board: #ffffff;
  --pin: #d64545;
  --line: #e6e8ec;
  --hero-bg: #4b4868;
  --hero-ink: #f4f5f8;
  --hero-muted: rgba(244, 245, 248, 0.72);
  --phone-lilac: #b0a8c8;
  --font-display: "Jua", "Noto Sans KR", sans-serif;
  --font-body: "Noto Sans KR", "Nunito", "Apple SD Gothic Neo", sans-serif;
  --font-ui: "Noto Sans KR", "Apple SD Gothic Neo", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

/* PC에서 브라우저 배율만 바꾸고 레이아웃 재배치는 막기
   (screen 너비 기반 .is-pc — 줌으로 viewport가 줄어도 유지) */
html.is-pc {
  --page-content: 1080px;
  --page-gutter: 3rem;
  min-width: calc(var(--page-content) + var(--page-gutter) * 2);
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  background: #fff;
}

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

a {
  color: #2f6fed;
}

.site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 0.75rem;
  padding: 0.85rem 1rem;
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  flex: 0 0 auto;
  min-width: 0;
}

.logo {
  flex: 0 0 auto;
  white-space: nowrap;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--hero-bg);
  text-decoration: none;
  background: #fff;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  box-shadow: none;
}

.brand-company {
  white-space: nowrap;
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: rgba(244, 245, 248, 0.55);
  line-height: 1.2;
}

@media (max-device-width: 520px) {
  .brand-company {
    font-size: 0.68rem;
  }
}

.header-links {
  display: flex;
  flex: 1 1 auto;
  justify-content: flex-end;
  align-items: center;
  gap: 0.35rem;
  flex-wrap: wrap;
  min-width: 0;
}

.header-links a {
  color: var(--hero-ink);
  text-decoration: none;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.28rem 0.55rem;
  border-radius: 999px;
}

.lang-switch {
  display: inline-flex;
  align-items: center;
  gap: 0.28rem;
  margin-right: 0.15rem;
  padding: 0.2rem 0.45rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.22);
}

.lang-switch a {
  background: transparent;
  padding: 0.12rem 0.28rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  color: rgba(244, 245, 248, 0.72);
}

.lang-switch a.is-active {
  color: #fff;
  background: rgba(255, 255, 255, 0.16);
}

.lang-switch a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
}

.lang-sep {
  color: rgba(244, 245, 248, 0.4);
  font-size: 0.7rem;
  line-height: 1;
}

.header-links a:hover {
  background: rgba(255, 255, 255, 0.18);
  color: #fff;
}

@media (max-device-width: 520px) {
  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .header-links {
    width: 100%;
    justify-content: flex-start;
  }
}

@media (min-device-width: 768px) {
  .site-header {
    padding: 1.15rem clamp(1.25rem, 4vw, 3rem);
  }

  .logo {
    font-size: 1.35rem;
    padding: 0.35rem 0.85rem;
  }

  .header-links {
    gap: 0.55rem;
  }

  .header-links a {
    font-size: 0.88rem;
    padding: 0.35rem 0.7rem;
  }
}

.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  align-items: center;
  padding: 7.5rem 1rem 2.5rem;
  color: var(--hero-ink);
  overflow: visible;
  background: var(--hero-bg);
  border-bottom: none;
}

@media (min-device-width: 768px) {
  .hero {
    padding: 6.5rem clamp(1.25rem, 4vw, 3rem) 3rem;
  }
}

.hero::before,
.hero::after {
  display: none;
}

.hero-layout {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: none;
  margin: 0 auto;
  display: grid;
  gap: 1.75rem;
  align-items: center;
}

@media (min-device-width: 900px) {
  .hero-layout {
    grid-template-columns: 0.85fr 1.15fr;
    gap: 1.5rem;
  }
}

.hero-inner {
  max-width: 38rem;
  animation: rise 0.9s ease-out both;
}

.hero-seo-line {
  margin: -0.75rem 0 1.5rem;
  max-width: 30rem;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--hero-muted);
  line-height: 1.5;
}

.hero-aside {
  display: none;
}

.hero-visual {
  position: relative;
  z-index: 1;
  width: 100%;
  animation: rise 1s ease-out both;
}

@media (min-device-width: 900px) {
  .hero-visual {
    justify-self: end;
    width: min(100%, 466px);
    margin-left: auto;
    margin-right: 0;
    padding-left: 0;
  }
}

.ai-canvas {
  position: relative;
  border-radius: 0;
  background: transparent;
  border: none;
  box-shadow: none;
  overflow: visible;
}

.ai-net {
  display: block;
  width: 90%;
  height: auto;
  max-height: 466px;
  margin-left: auto;
  transform: none;
}

.net-flow .flow {
  stroke-dasharray: 10 18;
  animation: electricity 1.35s linear infinite;
}

.net-flow .flow-b {
  animation-delay: 0.18s;
  animation-duration: 1.15s;
}

.net-flow .flow-c {
  animation-delay: 0.35s;
  animation-duration: 1.5s;
}

.net-flow .flow-d {
  animation-delay: 0.12s;
  animation-duration: 1.25s;
}

.net-flow .flow-e {
  animation-delay: 0.28s;
  animation-duration: 1.05s;
}

.net-flow .flow-f {
  animation-delay: 0.42s;
  animation-duration: 1.4s;
}

.node {
  transform-box: fill-box;
  transform-origin: center;
  animation: nodePulse 2.2s ease-in-out infinite;
}

.node-delay {
  animation-delay: 0.7s;
}

.ai-core {
  transform-box: fill-box;
  transform-origin: center;
  animation: corePulse 2.8s ease-in-out infinite;
}

.pulse-ring {
  transform-box: fill-box;
  transform-origin: center;
  animation: ringPulse 2.4s ease-out infinite;
}

@keyframes electricity {
  from {
    stroke-dashoffset: 0;
  }
  to {
    stroke-dashoffset: -56;
  }
}

@keyframes nodePulse {
  0%,
  100% {
    opacity: 0.75;
    transform: scale(0.92);
  }
  50% {
    opacity: 1;
    transform: scale(1.08);
  }
}

@keyframes corePulse {
  0%,
  100% {
    opacity: 0.9;
    transform: scale(0.96);
  }
  50% {
    opacity: 1;
    transform: scale(1.06);
  }
}

@keyframes ringPulse {
  0% {
    opacity: 0.5;
    transform: scale(0.85);
  }
  70% {
    opacity: 0;
    transform: scale(1.55);
  }
  100% {
    opacity: 0;
    transform: scale(1.55);
  }
}

.brand {
  margin: 0 0 0.75rem;
  font-family: var(--font-display);
  font-size: clamp(3.2rem, 10vw, 5.2rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 1.05;
  color: var(--hero-ink);
  text-shadow: none;
}

.brand-plus {
  display: inline-block;
  margin-left: 0.08em;
  font-weight: 700;
  font-size: 0.72em;
  line-height: 1;
  vertical-align: 0.22em;
  color: var(--sun);
}

.tagline-rotator {
  position: relative;
  margin: 0 0 1rem;
  max-width: 28rem;
  min-height: 3.4em;
}

.tagline {
  margin: 0;
  font-size: clamp(1.05rem, 2.4vw, 1.28rem);
  font-weight: 500;
  line-height: 1.55;
  color: var(--hero-muted);
  max-width: 28rem;
}

.tagline--intro,
.tagline--main {
  position: absolute;
  inset: 0 auto auto 0;
  width: 100%;
}

.tagline--intro {
  animation: tagline-cycle-a 20s ease-in-out infinite;
}

.tagline--main {
  animation: tagline-cycle-b 20s ease-in-out infinite;
}

/* 각 캡션 약 10초씩 교차 (전체 주기 20초) */
@keyframes tagline-cycle-a {
  0%,
  2% {
    opacity: 0;
  }
  6%,
  44% {
    opacity: 1;
  }
  50%,
  100% {
    opacity: 0;
  }
}

@keyframes tagline-cycle-b {
  0%,
  50% {
    opacity: 0;
  }
  56%,
  94% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.btn {
  display: inline-flex;
  flex: 0 0 auto;
  width: auto;
  max-width: 100%;
  align-items: center;
  justify-content: center;
  padding: 0.45rem 0.9rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.82rem;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  transition: transform 0.2s ease, background 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: rgba(255, 255, 255, 0.12);
  color: var(--hero-ink);
  border: 1.5px solid rgba(255, 255, 255, 0.45);
  box-shadow: none;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.12);
  color: var(--hero-ink);
  border: 1.5px solid rgba(255, 255, 255, 0.45);
}

@media (min-device-width: 768px) {
  .cta-row {
    gap: 0.65rem;
  }

  .btn {
    padding: 0.55rem 1.1rem;
    font-size: 0.88rem;
  }
}

.section {
  padding: clamp(3.5rem, 7vw, 5rem) clamp(1.25rem, 4vw, 3rem);
  background: #fff;
}

.section-inner {
  max-width: 920px;
  margin: 0 auto;
}

.section-inner-wide {
  max-width: 1080px;
}

.section h2 {
  margin: 0 0 0.55rem;
  font-family: var(--font-ui);
  font-size: clamp(1.55rem, 3.2vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.section-heading {
  position: relative;
  display: block;
  margin-bottom: 2rem;
  /* 로고가 문서 흐름 높이를 키우지 않도록 — 문구 높이만 유지 */
  min-height: 0;
}

.section-heading-copy {
  max-width: 38rem;
}

.section-heading .section-lead {
  margin-bottom: 0;
}

.section-brand-mark {
  position: absolute;
  /* 노란 박스 윗선 = 「한눈에 보는 키즈크로스」 글자 세로 중앙 */
  top: calc(clamp(1.55rem, 3.2vw, 2rem) * 0.5);
  left: calc(75% + 0.625rem);
  right: auto;
  transform: translateX(-50%);
  width: clamp(92px, 14.98vw, 138px);
  height: auto;
  display: block;
  object-fit: contain;
  object-position: center top;
  /* PNG 상단 흰 여백 보정 */
  margin-top: -0.45rem;
  pointer-events: none;
}

@media (max-device-width: 720px) {
  .section-heading-copy {
    max-width: 100%;
    padding-right: 0;
  }

  .section-brand-mark {
    position: static;
    left: auto;
    right: auto;
    transform: none;
    width: clamp(69px, 24.2vw, 104px);
    margin: 0.75rem 0 0 auto;
    pointer-events: auto;
  }
}

.section-lead {
  margin: 0 0 2rem;
  color: var(--ink-soft);
  max-width: 38rem;
  font-weight: 400;
  font-size: 0.98rem;
}

.showcase-hero {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2.25rem;
  padding: 1.5rem 0 2rem;
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--line);
  border-radius: 0;
  box-shadow: none;
}

@media (min-device-width: 900px) {
  .showcase-hero {
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
      "head ."
      "body media";
    column-gap: 2.5rem;
    row-gap: 0;
    align-items: start;
    padding: 1.75rem 0 2.25rem;
  }

  .showcase-copy-head {
    grid-area: head;
  }

  .showcase-copy-body {
    grid-area: body;
  }

  .showcase-hero .showcase-media-pair,
  .showcase-hero .showcase-media-stack {
    grid-area: media;
    align-self: start;
    margin-top: -0.85rem;
  }
}

.showcase-badge {
  display: inline-block;
  margin-bottom: 0.55rem;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  background: #f0f4f8;
  color: #3a4654;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.showcase-copy h3,
.showcase-copy-head h3 {
  margin: 0 0 0.55rem;
  font-family: var(--font-ui);
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.showcase-slider-block {
  margin-top: 0.25rem;
}

.showcase-slider-title {
  margin: 0 0 1rem;
  padding: 0;
  font-family: var(--font-ui);
  font-size: clamp(1.25rem, 2.4vw, 1.55rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  /* 깜빡임 · 거리 안내(h3)와 왼쪽 줄 정렬 */
  text-align: left;
}

.showcase-slider {
  margin-top: 0;
}

.showcase-copy > p,
.showcase-copy-body > p {
  margin: 0 0 0.85rem;
  color: var(--ink-soft);
  font-weight: 400;
  font-size: 0.95rem;
}

.showcase-points {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--ink);
  font-weight: 500;
  font-size: 0.9rem;
}

.showcase-points li + li {
  margin-top: 0.3rem;
}

.showcase-media-pair {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  align-items: flex-end;
  justify-content: center;
  margin-top: 0;
}

.showcase-media-stack {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
  justify-content: flex-start;
  margin-top: 0;
}

.showcase-media-stack .phone-frame-wide {
  width: min(100%, 245px);
}

.phone-frame {
  margin: 0;
  border-radius: 0;
  overflow: visible;
  background: transparent;
  border: none;
  box-shadow: none;
  transform: none;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.phone-frame:hover {
  transform: translateY(-2px);
  opacity: 0.96;
}

.phone-frame-wide {
  width: min(100%, 245px);
  transform: none;
}

.showcase-media-pair .phone-frame:not(.phone-frame-wide) {
  width: 79px;
  flex: 0 0 auto;
}

.phone-frame img {
  width: 100%;
  height: auto;
  display: block;
}

.showcase-grid {
  display: none;
}

.showcase-viewport {
  overflow: hidden;
  width: 100%;
}

.showcase-track {
  display: flex;
  transition: transform 0.35s ease;
  will-change: transform;
  touch-action: pan-y;
}

.showcase-slide {
  flex: 0 0 100%;
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 22rem);
  gap: 1.35rem 4.75rem;
  align-items: center;
  justify-content: center;
  padding: 0.25rem 6% 0.5rem 10%;
  box-sizing: border-box;
}

.showcase-slide-media {
  width: 216px;
  margin: 0;
}

.showcase-slide-copy {
  min-width: 0;
  text-align: left;
  margin-left: 0.75rem;
}

/* 모바일: 이미지 위, 캡션 아래 */
html.is-mobile .showcase-slide {
  grid-template-columns: 1fr;
  justify-items: center;
  align-items: start;
  gap: 0.9rem;
  padding: 0.35rem 1rem 0.85rem;
}

html.is-mobile .showcase-slide-media {
  width: min(173px, 68vw);
  margin: 0 auto;
}

html.is-mobile .showcase-slide-copy {
  margin-left: 0;
  max-width: 22rem;
  text-align: center;
}

html.is-mobile .showcase-slide-copy h3,
html.is-mobile .showcase-slide-copy p {
  text-align: center;
}

.showcase-slide-copy h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-ui);
  font-size: clamp(1.05rem, 2.4vw, 1.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.showcase-slide-copy p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 400;
  line-height: 1.55;
}

.showcase-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1.15rem;
}

.showcase-nav {
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.showcase-nav:hover {
  border-color: #c5CAD3;
  background: #f7f8fa;
}

.showcase-nav:disabled {
  opacity: 0.35;
  cursor: default;
}

.showcase-dots {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
  max-width: min(100%, 18rem);
}

.showcase-dot {
  width: 0.55rem;
  height: 0.55rem;
  padding: 0;
  border: none;
  border-radius: 999px;
  background: #cfd4dc;
  cursor: pointer;
}

.showcase-dot.is-active {
  background: var(--ink);
  transform: scale(1.15);
}

@media (max-device-width: 520px) {
  html.is-mobile .showcase-slide-media {
    width: min(173px, 72vw);
  }

  html.is-mobile .showcase-slide-copy p {
    font-size: 0.86rem;
  }
}

.showcase-card {
  background: transparent;
  border-radius: 0;
  padding: 0;
  border: none;
  box-shadow: none;
  text-align: center;
}

.showcase-card .phone-frame {
  width: 100px;
  margin: 0 auto 0.85rem;
  transform: none;
  box-shadow: none;
}

.showcase-card:nth-child(even) .phone-frame,
.showcase-card:nth-child(odd) .phone-frame {
  transform: none;
}

.showcase-card:hover .phone-frame {
  transform: translateY(-2px);
}

.showcase-card h3 {
  margin: 0 0 0.3rem;
  font-family: var(--font-ui);
  font-size: 0.98rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.showcase-card p {
  margin: 0 auto;
  max-width: 16rem;
  color: var(--ink-soft);
  font-size: 0.84rem;
  font-weight: 400;
  line-height: 1.5;
}

.features {
  display: grid;
  gap: 1.25rem;
}

@media (min-device-width: 720px) {
  .features {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.35rem;
  }
}

.feature {
  background: #fff;
  border-radius: 24px;
  padding: 1.35rem 1.25rem 1.45rem;
  box-shadow: 0 6px 0 rgba(255, 193, 7, 0.35);
  border: 2px solid rgba(255, 213, 79, 0.65);
}

.feature h3 {
  margin: 0 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: #5a3d18;
}

.feature p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
  font-weight: 600;
}

.feature-mark {
  width: 2.75rem;
  height: 0.45rem;
  margin-bottom: 0.85rem;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--sun-deep), var(--coral));
}

.feature:nth-child(2) .feature-mark {
  background: linear-gradient(90deg, var(--sky), var(--leaf));
}

.feature:nth-child(3) .feature-mark {
  background: linear-gradient(90deg, var(--coral), var(--sun-deep));
}

.promo {
  background: #fff;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.board {
  background: #fff;
  border-radius: 12px;
  padding: 0;
  border: 1px solid var(--line);
  box-shadow: none;
  display: grid;
  gap: 0;
}

@media (min-device-width: 720px) {
  .board {
    grid-template-columns: repeat(2, 1fr);
  }
}

.board-card {
  position: relative;
  display: block;
  background: #fff;
  border-radius: 0;
  padding: 1.15rem 1.2rem 1.25rem;
  border: none;
  border-bottom: 1px solid var(--line);
  box-shadow: none;
  transform: none;
  transition: background 0.15s ease;
  color: inherit;
  text-decoration: none;
}

@media (min-device-width: 720px) {
  .board-card:nth-child(odd) {
    border-right: 1px solid var(--line);
  }
}

.board-card:nth-child(even) {
  transform: none;
}

.board-card:hover {
  transform: none;
  background: #fafbfc;
  box-shadow: none;
}

.board-pin {
  display: none;
}

.board-type {
  display: inline-block;
  margin-bottom: 0.4rem;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.board-type-video {
  background: #eef3fb;
  color: #2f6fed;
}

.board-type-article {
  background: #f3f4f6;
  color: #4b5563;
}

.board-type-news {
  background: #eef8f1;
  color: #1f7a45;
}

.board-type-news-global {
  background: #eef3fb;
  color: #2f6fed;
}

.board-type-soon {
  background: #f3f4f6;
  color: #6b7280;
}

.board-card h3 {
  margin: 0 0 0.35rem;
  font-family: var(--font-ui);
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--ink);
}

.board-card p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.9rem;
  font-weight: 400;
}

.board-meta {
  margin-top: 0.65rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: #8b949e;
}

.company {
  background: #fff;
}

.company-card {
  display: grid;
  gap: 1.25rem;
  background: #fff;
  border-radius: 12px;
  padding: 1.5rem;
  border: 1px solid var(--line);
  box-shadow: none;
}

.company dl {
  margin: 0;
  display: grid;
  gap: 0.85rem;
}

.company dt {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #8b949e;
}

.company dd {
  margin: 0.15rem 0 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--ink);
}

.company-note {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
  font-weight: 400;
}

.legal-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 0.5rem;
}

.legal-links a {
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid #c5ccd6;
  padding-bottom: 0.1rem;
  color: var(--ink);
}

.legal-links a:hover {
  color: #2f6fed;
  border-bottom-color: #2f6fed;
}

.site-footer {
  padding: 2rem clamp(1.25rem, 4vw, 3rem) 2.5rem;
  text-align: center;
  color: var(--ink-soft);
  font-size: 0.88rem;
  font-weight: 400;
  background: #fff;
  border-top: 1px solid var(--line);
}

.site-footer strong {
  color: var(--ink);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: 0.95rem;
}

@keyframes drift {
  from {
    transform: translateY(0);
  }
  to {
    transform: translateY(-100px);
  }
}

@keyframes bounceSoft {
  0%,
  100% {
    transform: translateY(0) scale(1);
  }
  50% {
    transform: translateY(14px) scale(1.04);
  }
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes wiggle {
  0%,
  100% {
    transform: rotate(-2deg);
  }
  50% {
    transform: rotate(2deg);
  }
}

.promo-posts {
  display: grid;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  overflow: hidden;
}

@media (min-device-width: 720px) {
  .promo-posts {
    grid-template-columns: repeat(2, 1fr);
  }
}

.promo-post {
  background: #fff;
  border-radius: 0;
  padding: 1.2rem 1.25rem 1.3rem;
  border: none;
  border-bottom: 1px solid var(--line);
  box-shadow: none;
}

@media (min-device-width: 720px) {
  .promo-post:nth-child(odd) {
    border-right: 1px solid var(--line);
  }
}

.promo-post h3 {
  margin: 0.4rem 0 0.3rem;
  font-family: var(--font-ui);
  font-size: 1.02rem;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.02em;
}

.promo-post h3 a {
  color: var(--ink);
  text-decoration: none;
}

.promo-post h3 a:hover {
  color: #2f6fed;
}

.promo-post .post-source {
  margin: 0 0 0.5rem;
  font-size: 0.78rem;
  font-weight: 500;
  color: #8b949e;
}

.promo-post p {
  margin: 0;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--ink-soft);
}

.post-more {
  display: inline-block;
  margin-top: 0.7rem;
  font-size: 0.84rem;
  font-weight: 600;
  color: #2f6fed;
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.post-more:hover {
  border-bottom-color: #2f6fed;
}

.promo-all {
  margin: 1.75rem 0 0;
  text-align: center;
}

.promo-all .btn-primary {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
  box-shadow: none;
  border-radius: 8px;
  padding: 0.65rem 1.15rem;
  font-size: 0.9rem;
}

.site-header-solid {
  position: sticky;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}

.site-header-solid .logo {
  box-shadow: none;
  border: 1px solid var(--line);
  color: var(--ink);
}

.site-header-solid .brand-company {
  color: rgba(28, 36, 48, 0.38);
}

.site-header-solid .header-links a {
  background: transparent;
  color: var(--ink-soft);
  font-weight: 600;
}

.site-header-solid .header-links a:hover {
  color: var(--ink);
  background: #f5f6f8;
}

.article-detail {
  padding: 5.5rem clamp(1.25rem, 4vw, 3rem) 3rem;
  background: #fff;
  min-height: 100svh;
}

.article-detail-inner {
  max-width: 42rem;
  margin: 0 auto;
}

.article-back {
  display: inline-flex;
  margin-bottom: 1.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #5a6573;
  text-decoration: none;
}

.article-back:hover {
  color: var(--ink);
}

.article-detail .board-type {
  margin-bottom: 0.55rem;
}

.article-detail h1 {
  margin: 0 0 0.65rem;
  font-family: var(--font-ui);
  font-size: clamp(1.45rem, 3.2vw, 1.9rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1.35;
}

.article-meta {
  margin: 0 0 0.55rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: #8b949e;
}

.article-credit {
  margin: 0 0 1rem;
  padding: 0.75rem 0.9rem;
  border-radius: 8px;
  background: #f5f6f8;
  border: 1px solid var(--line);
  font-size: 0.86rem;
  line-height: 1.5;
  color: var(--ink-soft);
}

.article-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.article-body {
  font-size: 1.02rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.article-body h2 {
  margin: 1.6rem 0 0.65rem;
  font-family: var(--font-ui);
  font-size: 1.12rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
}

.article-body p {
  margin: 0 0 1rem;
}

.article-body ul,
.article-body ol {
  margin: 0 0 1rem;
  padding-left: 1.25rem;
}

.article-body li {
  margin-bottom: 0.45rem;
}

.article-body blockquote {
  margin: 0 0 1rem;
  padding: 0.9rem 1rem;
  border-left: 3px solid #c5ccd6;
  background: #f7f8fa;
  border-radius: 0 8px 8px 0;
  color: var(--ink);
  font-weight: 500;
  font-size: 0.98rem;
}

.article-body .article-endnote {
  margin-top: 1.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.86rem;
  color: #8b949e;
}

.articles-page {
  padding: 5.5rem clamp(1.25rem, 4vw, 3rem) 3rem;
  background: #fff;
  min-height: 100svh;
}

.articles-head {
  margin-bottom: 2rem;
}

.articles-head h1 {
  margin: 0 0 0.75rem;
  font-family: var(--font-ui);
  font-size: clamp(1.55rem, 3.2vw, 2rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
  line-height: 1.3;
}

.articles-head p {
  margin: 0;
  max-width: 46rem;
  color: var(--ink-soft);
  font-weight: 400;
  font-size: 0.95rem;
}

.post-list {
  display: grid;
  gap: 1rem;
}

.post {
  background: #fff;
  border-radius: 12px;
  padding: 1.35rem 1.35rem 1.45rem;
  border: 1px solid var(--line);
  box-shadow: none;
  scroll-margin-top: 5.5rem;
}

.post-header h2 {
  margin: 0.45rem 0 0.35rem;
  font-family: var(--font-ui);
  font-size: clamp(1.1rem, 2.4vw, 1.3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.35;
}

.post-source {
  margin: 0;
  font-size: 0.84rem;
  font-weight: 500;
  color: #8b949e;
}

.post-source a {
  color: #2f6fed;
}

.post-body {
  margin-top: 0.9rem;
}

.post-body p {
  margin: 0 0 0.85rem;
  color: var(--ink-soft);
  font-weight: 400;
}

.post-body blockquote {
  margin: 0 0 0.85rem;
  padding: 0.85rem 1rem;
  border-left: 3px solid #c5ccd6;
  background: #f7f8fa;
  border-radius: 0 8px 8px 0;
  color: var(--ink);
  font-weight: 500;
  font-size: 0.92rem;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero::before,
  .hero::after,
  .hero-inner,
  .hero-visual,
  .board-pin,
  .net-flow .flow,
  .node,
  .ai-core,
  .pulse-ring,
  .tagline--intro,
  .tagline--main {
    animation: none;
  }

  .tagline--intro {
    display: none;
  }

  .tagline--main {
    opacity: 1;
  }
}

/* —— PC 레이아웃 고정: 확대/축소 시 히어로·흰 섹션이 한 덩어리로 스케일 —— */
html.is-pc .site-header {
  flex-direction: row;
  align-items: center;
  padding: 1.15rem var(--page-gutter);
  box-sizing: border-box;
}

html.is-pc .header-links {
  width: auto;
  justify-content: flex-end;
  gap: 0.55rem;
}

html.is-pc .header-links a {
  font-size: 0.88rem;
  padding: 0.35rem 0.7rem;
}

html.is-pc .lang-switch a {
  font-size: 0.78rem;
  padding: 0.12rem 0.35rem;
}

html.is-pc .logo {
  font-size: 1.35rem;
  padding: 0.35rem 0.85rem;
}

html.is-pc .hero {
  /* svh 제거: 줌 시 히어로만 뷰포트에 묶여 흰 영역과 멀어지던 문제 해결 */
  min-height: auto;
  padding: 6.5rem var(--page-gutter) 3rem;
  box-sizing: border-box;
}

html.is-pc .hero-layout {
  grid-template-columns: 0.85fr 1.15fr;
  gap: 1.5rem;
  max-width: var(--page-content);
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}

html.is-pc .hero-visual {
  justify-self: end;
  width: min(100%, 466px);
  margin-left: auto;
}

html.is-pc .ai-net {
  width: 90%;
  max-height: 466px;
}

html.is-pc .btn {
  padding: 0.55rem 1.1rem;
  font-size: 0.88rem;
}

html.is-pc .section {
  padding: 4rem var(--page-gutter);
  box-sizing: border-box;
}

html.is-pc .section-inner,
html.is-pc .section-inner-wide {
  max-width: var(--page-content);
  width: 100%;
  margin-left: auto;
  margin-right: auto;
}

html.is-pc .showcase-hero {
  grid-template-columns: 1fr 1fr;
  grid-template-areas:
    "head ."
    "body media";
  column-gap: 2.5rem;
  row-gap: 0;
  align-items: start;
  padding: 1.75rem 0 2.25rem;
}

html.is-pc .showcase-copy-head {
  grid-area: head;
}

html.is-pc .showcase-copy-body {
  grid-area: body;
}

html.is-pc .showcase-hero .showcase-media-pair,
html.is-pc .showcase-hero .showcase-media-stack {
  grid-area: media;
  align-self: start;
  margin-top: -0.85rem;
}

html.is-pc .section-heading-copy {
  max-width: 38rem;
}

html.is-pc .section-brand-mark {
  position: absolute;
  top: calc(2rem * 0.5);
  left: calc(75% + 0.625rem);
  right: auto;
  transform: translateX(-50%);
  width: 7.56rem;
  margin: -0.45rem 0 0;
  pointer-events: none;
}

html.is-pc .features {
  grid-template-columns: repeat(3, 1fr);
}

html.is-pc .showcase-slide {
  grid-template-columns: auto minmax(0, 22rem);
  gap: 1.35rem 4.75rem;
  padding: 0.25rem 8% 0.5rem calc(10% - 5ch);
}

html.is-pc .showcase-slide-media {
  width: 216px;
}

html.is-pc .showcase-slide-copy {
  margin-left: 0.75rem;
  text-align: left;
}

html.is-pc .site-footer {
  padding-left: var(--page-gutter);
  padding-right: var(--page-gutter);
  box-sizing: border-box;
}