:root {
  --ink: #111827;
  --ink-soft: #526070;
  --line: #dbe4ee;
  --paper: #ffffff;
  --mist: #f5f8fc;
  --navy: #071b3a;
  --navy-2: #0f3364;
  --teal: #13b8aa;
  --teal-dark: #0b8179;
  --red: #ff1228;
  --coral: #f36f56;
  --gold: #d5a239;
  --aqua: #86fff3;
  --shadow: 0 22px 56px rgba(7, 27, 58, 0.15);
  --shadow-strong: 0 30px 70px rgba(7, 27, 58, 0.26);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #f7f9fc;
  color: var(--ink);
  font-family: "Pretendard", "Noto Sans KR", "Apple SD Gothic Neo", "Malgun Gothic",
    Arial, sans-serif;
  line-height: 1.6;
  overflow-wrap: break-word;
  word-break: keep-all;
}

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

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid rgba(219, 228, 238, 0.78);
  background: rgba(255, 255, 255, 0.92);
  padding: 0 40px;
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  min-width: 0;
  align-items: center;
  gap: 16px;
}

.brand-logo {
  width: 132px;
  height: auto;
  object-fit: contain;
}

.brand-title {
  border-left: 1px solid var(--line);
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 900;
  padding-left: 16px;
}

.top-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 26px;
  color: var(--ink-soft);
  font-size: 0.94rem;
  font-weight: 700;
}

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

.header-action,
.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border-radius: 8px;
  font-weight: 800;
  white-space: nowrap;
}

.header-action {
  border: 1px solid rgba(255, 18, 40, 0.3);
  padding: 0 18px;
  background: var(--red);
  color: #fff;
  box-shadow: 0 12px 30px rgba(255, 18, 40, 0.2);
}

.header-action:hover,
.header-action:focus-visible {
  border-color: var(--red);
  color: #fff;
  transform: translateY(-1px);
}

.hero {
  position: relative;
  display: flex;
  min-height: clamp(530px, calc(100svh - 150px), 660px);
  align-items: center;
  overflow: hidden;
  background-image:
    linear-gradient(90deg, rgba(5, 20, 47, 0.98) 0%, rgba(5, 20, 47, 0.94) 34%, rgba(5, 20, 47, 0.5) 64%, rgba(5, 20, 47, 0.08) 100%),
    url("./assets/hero-learning-experience.png");
  background-position: center;
  background-size: cover;
  padding: 44px 40px 42px;
  isolation: isolate;
}

.hero::before {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(134, 255, 243, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(134, 255, 243, 0.1) 1px, transparent 1px);
  background-size: 72px 72px;
  content: "";
  mask-image: linear-gradient(90deg, #000 0%, rgba(0, 0, 0, 0.8) 45%, transparent 74%);
}

.hero-signal {
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(115deg, transparent 12%, rgba(134, 255, 243, 0.22) 13%, transparent 14%),
    linear-gradient(115deg, transparent 42%, rgba(255, 18, 40, 0.28) 43%, transparent 44%),
    linear-gradient(115deg, transparent 70%, rgba(255, 255, 255, 0.18) 71%, transparent 72%);
  opacity: 0.7;
  animation: signalSweep 9s ease-in-out infinite alternate;
}

.hero-content {
  position: relative;
  width: min(760px, 100%);
  margin-left: max(0px, calc((100vw - 1180px) / 2));
}

.eyebrow,
.section-kicker {
  margin: 0 0 14px;
  color: var(--teal-dark);
  font-size: 0.92rem;
  font-weight: 900;
  line-height: 1.45;
}

.hero .eyebrow {
  color: var(--aqua);
  max-width: 680px;
}

.hero h1 {
  margin: 0;
  color: #fff;
  font-size: clamp(3.7rem, 5.8vw, 5.2rem);
  line-height: 0.98;
  text-shadow: 0 18px 44px rgba(0, 0, 0, 0.36);
}

.hero-lead {
  margin: 26px 0 0;
  color: #f2f8ff;
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.45;
}

.hero-copy {
  max-width: 600px;
  margin: 18px 0 0;
  color: rgba(242, 248, 255, 0.76);
  font-size: 1.08rem;
}

blockquote {
  margin: 28px 0 0;
  border-left: 4px solid var(--red);
  color: #fff;
  font-size: 1.08rem;
  font-weight: 800;
  padding-left: 18px;
}

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

.button {
  border: 1px solid transparent;
  padding: 0 22px;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button.primary {
  background: var(--red);
  color: #fff;
  box-shadow: 0 18px 36px rgba(255, 18, 40, 0.32);
}

.button.secondary {
  border-color: rgba(255, 255, 255, 0.38);
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  backdrop-filter: blur(12px);
}

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

.hero-highlights span {
  border: 1px solid rgba(134, 255, 243, 0.3);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.92rem;
  font-weight: 800;
  padding: 10px 12px;
  backdrop-filter: blur(14px);
}

.hero-highlights strong {
  color: var(--aqua);
  margin-right: 6px;
}

.section-inner {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.mission-section {
  background:
    linear-gradient(135deg, #071b3a 0%, #0e315f 64%, #1d5a66 100%);
  color: #fff;
  padding: 44px 0;
}

.mission-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 42px;
  align-items: start;
}

.mission-section .section-kicker {
  color: var(--aqua);
}

.mission-section h2 {
  margin: 0;
  font-size: 2.05rem;
  line-height: 1.25;
}

.mission-section p:last-child {
  margin: 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: 1.03rem;
}

.story-strip {
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 18, 40, 0.14);
  border-top: 1px solid rgba(255, 18, 40, 0.14);
  background: #fff;
}

.strip-track {
  display: flex;
  width: max-content;
  gap: 16px;
  padding: 16px 0;
  animation: stripMove 30s linear infinite;
}

.strip-track span {
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--navy);
  font-size: 0.95rem;
  font-weight: 900;
  padding: 9px 18px;
  box-shadow: 0 8px 20px rgba(7, 27, 58, 0.07);
}

.gateway-section,
.experience-flow-section,
.tools-section,
.partners-section {
  padding: 82px 0;
  scroll-margin-top: 72px;
}

.gateway-section {
  background:
    linear-gradient(180deg, #f5f8fc 0%, #eef4fb 100%);
}

.tools-section {
  background: #fff;
}

.experience-flow-section {
  background:
    linear-gradient(180deg, #eef4fb 0%, #ffffff 100%);
}

.partners-section {
  background: #fff7f4;
}

.section-heading {
  display: flex;
  flex-direction: column;
  max-width: 760px;
  margin-bottom: 30px;
}

.section-heading.compact {
  margin-bottom: 24px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(2.5rem, 4vw, 3.65rem);
  line-height: 1.18;
}

.section-heading p:last-child {
  margin: 12px 0 0;
  color: var(--ink-soft);
  font-size: 1.02rem;
}

.solution-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.solution-card {
  display: flex;
  min-height: 330px;
  flex-direction: column;
  align-items: flex-start;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(219, 228, 238, 0.9);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.94);
  padding: 26px;
  box-shadow: var(--shadow);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.solution-card::before {
  position: absolute;
  inset: 0 0 auto;
  height: 5px;
  background: linear-gradient(90deg, var(--red), var(--teal), var(--gold));
  content: "";
}

.solution-card[href]:hover,
.solution-card[href]:focus-visible {
  border-color: rgba(255, 18, 40, 0.34);
  box-shadow: var(--shadow-strong);
  transform: translateY(-6px);
}

.solution-card.disabled {
  background: repeating-linear-gradient(
    135deg,
    #fff,
    #fff 14px,
    #f8fbfd 14px,
    #f8fbfd 28px
  );
  box-shadow: none;
}

.solution-card.lxt-card {
  border-color: rgba(213, 162, 57, 0.42);
  background:
    linear-gradient(180deg, #fffdf7 0%, #ffffff 100%);
}

.solution-card.lxt-card::before {
  background: linear-gradient(90deg, var(--gold), var(--teal), var(--red));
}

.card-icon {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 900;
}

.icon-blue {
  background: var(--navy);
}

.icon-teal {
  background: var(--teal-dark);
}

.icon-coral {
  background: var(--coral);
}

.icon-gold {
  background: var(--gold);
}

.card-meta {
  margin-top: 22px;
  color: var(--red);
  font-size: 0.92rem;
  font-weight: 900;
}

.solution-card strong {
  margin-top: 8px;
  font-size: 1.82rem;
  line-height: 1.16;
}

.card-copy {
  margin-top: 16px;
  color: var(--ink-soft);
  font-size: 1rem;
}

.card-link {
  margin-top: auto;
  padding-top: 24px;
  color: var(--navy-2);
  font-weight: 900;
}

.card-link.muted {
  color: #8792a6;
}

.flow-visual {
  margin: 0;
  overflow-x: auto;
  border: 1px solid rgba(219, 228, 238, 0.92);
  border-radius: 8px;
  background: #fff;
  box-shadow: var(--shadow);
}

.flow-image {
  width: 100%;
  min-width: 760px;
  height: auto;
}

.tool-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
}

.tool-card {
  display: flex;
  min-height: 214px;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background:
    linear-gradient(180deg, #fff 0%, #fbfdff 100%);
  padding: 22px;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.tool-card::after {
  position: absolute;
  right: -24px;
  top: -24px;
  width: 76px;
  height: 76px;
  border: 16px solid rgba(19, 184, 170, 0.1);
  border-radius: 50%;
  content: "";
}

.tool-card:hover,
.tool-card:focus-visible {
  border-color: rgba(255, 18, 40, 0.42);
  box-shadow: 0 22px 46px rgba(7, 27, 58, 0.16);
  transform: translateY(-5px);
}

.tool-label {
  align-self: flex-start;
  border-radius: 999px;
  background: #f0fffd;
  color: var(--teal-dark);
  font-size: 0.78rem;
  font-weight: 900;
  padding: 5px 10px;
}

.tool-card strong {
  margin-top: 18px;
  font-size: 1.08rem;
  line-height: 1.42;
}

.tool-card span:last-child {
  margin-top: auto;
  color: var(--ink-soft);
  font-weight: 800;
}

.partner-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.partner-list article {
  min-height: 190px;
  border: 1px solid #f0d6cf;
  border-radius: 8px;
  background:
    linear-gradient(180deg, #ffffff 0%, #fffafb 100%);
  padding: 24px;
  box-shadow: 0 16px 36px rgba(255, 18, 40, 0.08);
}

.partner-list span {
  display: block;
  color: var(--red);
  font-size: 0.9rem;
  font-weight: 900;
}

.partner-list strong {
  display: block;
  margin-top: 12px;
  font-size: 1.28rem;
  line-height: 1.3;
}

.partner-list p {
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
  font-weight: 800;
  line-height: 1.55;
}

.site-footer {
  display: flex;
  min-height: 86px;
  align-items: center;
  justify-content: center;
  gap: 16px;
  border-top: 1px solid var(--line);
  background: #fff;
  color: var(--ink-soft);
  font-weight: 800;
}

@keyframes signalSweep {
  from {
    transform: translateX(-2%);
  }
  to {
    transform: translateX(4%);
  }
}

@keyframes stripMove {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

.site-footer span:first-child {
  color: var(--navy);
}

@media (max-width: 1020px) {
  .site-header {
    padding: 0 24px;
  }

  .hero {
    min-height: 620px;
    padding-inline: 28px;
    background-position: 58% center;
  }

  .hero h1 {
    font-size: 3.65rem;
  }

  .hero-lead {
    font-size: 1.3rem;
  }

  .mission-grid,
  .partner-list {
    grid-template-columns: 1fr;
  }

  .solution-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .solution-card {
    min-height: 280px;
  }

  .tool-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 740px) {
  .site-header {
    min-height: 64px;
    gap: 12px;
    padding: 0 16px;
  }

  .brand-title,
  .top-nav {
    display: none;
  }

  .brand-logo {
    width: 104px;
  }

  .header-action {
    min-height: 40px;
    padding: 0 12px;
    font-size: 0.9rem;
  }

  .hero {
    min-height: auto;
    padding: 54px 20px 44px;
    background-image:
      linear-gradient(180deg, rgba(5, 20, 47, 0.96) 0%, rgba(5, 20, 47, 0.9) 58%, rgba(5, 20, 47, 0.78) 100%),
      url("./assets/hero-learning-experience.png");
    background-position: 64% center;
  }

  .hero h1 {
    font-size: 2.68rem;
  }

  .hero .eyebrow {
    max-width: 320px;
  }

  .hero-lead {
    font-size: 1.08rem;
  }

  .hero-copy,
  blockquote {
    font-size: 1rem;
  }

  .hero-actions,
  .button {
    width: 100%;
  }

  .hero-highlights {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 8px;
    margin-top: 20px;
  }

  .hero-highlights span {
    width: auto;
    font-size: 0.78rem;
    line-height: 1.35;
    padding: 8px;
  }

  .hero-highlights strong {
    display: block;
    margin-right: 0;
  }

  .section-inner {
    width: min(100% - 32px, 1180px);
  }

  .mission-section,
  .gateway-section,
  .experience-flow-section,
  .tools-section,
  .partners-section {
    padding: 54px 0;
  }

  .flow-visual {
    margin-inline: -16px;
    border-left: 0;
    border-right: 0;
    border-radius: 0;
  }

  .mission-section h2,
  .section-heading h2 {
    font-size: 2rem;
  }

  .solution-card {
    min-height: 0;
    padding: 22px;
  }

  .solution-grid {
    grid-template-columns: 1fr;
  }

  .solution-card strong {
    font-size: 1.5rem;
  }

  .tool-grid {
    grid-template-columns: 1fr;
  }

  .tool-card {
    min-height: 174px;
  }

  .site-footer {
    flex-direction: column;
    gap: 2px;
    padding: 20px;
    text-align: center;
  }
}