* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #0b0f0e;
  --panel: #121816;
  --panel-strong: #19211e;
  --line: #2b3430;
  --text: #edf0e6;
  --muted: #a8aea0;
  --faint: #747b70;
  --moss: #9db35b;
  --moss-bright: #c6dc72;
  --steel: #82a9b4;
  --ember: #d68d5c;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Apple SD Gothic Neo", "Pretendard", "Malgun Gothic", "Noto Sans KR", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -webkit-text-size-adjust: 100%;
}

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

a {
  color: inherit;
}

.container {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
}

.site-nav {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 28px;
  background: rgba(8, 12, 11, 0.78);
  border-bottom: 1px solid rgba(198, 220, 114, 0.14);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.brand-link {
  color: var(--text);
  font-size: 0.92rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-decoration: none;
}

.site-nav nav {
  display: flex;
  align-items: center;
  gap: 18px;
}

.site-nav nav a {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
  text-decoration: none;
}

.site-nav nav a:hover {
  color: var(--moss-bright);
}

#maintenance-banner {
  position: fixed;
  z-index: 30;
  top: 60px;
  left: 50%;
  width: min(640px, calc(100% - 32px));
  transform: translateX(-50%);
  padding: 16px 18px;
  background: #301512;
  border: 1px solid #8e4136;
  color: #ffe0d8;
  border-radius: 8px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.34);
}

#maintenance-banner strong {
  display: block;
  margin-bottom: 4px;
  color: #ffd1c8;
}

#maintenance-banner p {
  color: #f0beb4;
  font-size: 0.92rem;
}

.hero {
  position: relative;
  min-height: 92svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 112px 28px 72px;
}

.hero-media,
.hero-shade {
  position: absolute;
  inset: 0;
}

.hero-media {
  background-image: url("images/hero.png");
  background-position: center;
  background-size: cover;
  filter: brightness(0.48) saturate(1.08);
}

.hero-shade {
  background:
    linear-gradient(90deg, rgba(11, 15, 14, 0.94) 0%, rgba(11, 15, 14, 0.74) 42%, rgba(11, 15, 14, 0.18) 100%),
    linear-gradient(180deg, rgba(11, 15, 14, 0.1) 0%, var(--bg) 100%);
}

.hero-copy {
  position: relative;
  z-index: 1;
  width: min(620px, 100%);
  margin-left: max(0px, calc((100vw - 1120px) / 2));
}

.eyebrow,
.section-kicker {
  color: var(--moss-bright);
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

h1 {
  margin: 14px 0 18px;
  color: var(--text);
  font-size: clamp(4rem, 12vw, 9rem);
  font-weight: 950;
  line-height: 0.86;
  letter-spacing: 0;
}

h2 {
  color: var(--text);
  font-size: clamp(2rem, 4.4vw, 4rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: 0;
}

h3 {
  color: var(--text);
  font-size: 1.16rem;
  line-height: 1.3;
  letter-spacing: 0;
}

p {
  color: var(--muted);
}

.lead {
  max-width: 560px;
  color: #d7ddcf;
  font-size: clamp(1.08rem, 2vw, 1.34rem);
  line-height: 1.65;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 8px;
  font-size: 0.98rem;
  font-weight: 850;
  text-decoration: none;
  transition: transform 0.16s ease, background 0.16s ease, border-color 0.16s ease;
}

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

.button.primary {
  background: var(--moss-bright);
  color: #0d120e;
}

.button.secondary {
  color: var(--text);
  border: 1px solid rgba(237, 240, 230, 0.32);
  background: rgba(237, 240, 230, 0.08);
}

.button.disabled {
  opacity: 0.55;
  pointer-events: none;
  filter: grayscale(0.4);
}

.intro,
.play-pillars,
.screens,
.download {
  padding: 96px 0;
}

.intro {
  border-top: 1px solid rgba(198, 220, 114, 0.12);
  background: var(--bg);
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(0, 1fr);
  gap: 56px;
  align-items: start;
}

.split p:last-child {
  max-width: 620px;
  font-size: 1.08rem;
}

.section-kicker {
  display: block;
  margin-bottom: 14px;
}

.feature-band {
  padding: 96px 0;
  background: var(--panel);
}

.feature-band.alternate {
  background: #0f1418;
}

.feature-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.78fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
}

.feature-layout.reverse {
  grid-template-columns: minmax(0, 1fr) minmax(260px, 0.78fr);
}

.feature-layout.reverse .phone-shot {
  order: 2;
}

.phone-shot {
  justify-self: center;
  width: min(320px, 100%);
  aspect-ratio: 9 / 16;
  overflow: hidden;
  border: 1px solid rgba(237, 240, 230, 0.14);
  border-radius: 8px;
  background: #070908;
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.42);
}

.phone-shot img,
.screen-grid img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.feature-copy p {
  max-width: 620px;
  margin-top: 24px;
  font-size: 1.04rem;
}

.plain-list {
  display: grid;
  gap: 10px;
  margin-top: 28px;
  list-style: none;
}

.plain-list li {
  color: var(--text);
  padding-left: 18px;
  border-left: 3px solid var(--steel);
}

.section-head {
  max-width: 680px;
  margin-bottom: 36px;
}

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

.pillar-grid article {
  min-height: 210px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel-strong);
}

.pillar-grid article:nth-child(2) {
  border-top-color: rgba(130, 169, 180, 0.68);
}

.pillar-grid article:nth-child(3) {
  border-top-color: rgba(214, 141, 92, 0.68);
}

.pillar-grid p {
  margin-top: 14px;
}

.screens {
  background: #101511;
}

.screen-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.screen-grid img {
  aspect-ratio: 9 / 16;
  border: 1px solid rgba(237, 240, 230, 0.12);
  border-radius: 8px;
  background: #070908;
}

.download {
  background:
    linear-gradient(180deg, rgba(130, 169, 180, 0.08), rgba(11, 15, 14, 0)),
    var(--bg);
}

.download-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 36px;
  align-items: center;
  padding: 38px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.download-layout p {
  max-width: 650px;
  margin-top: 18px;
}

footer {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 34px 28px;
  border-top: 1px solid var(--line);
  color: var(--faint);
  font-size: 0.9rem;
}

footer p,
footer a {
  color: var(--faint);
}

@media (max-width: 820px) {
  .site-nav {
    padding: 12px 16px;
  }

  .site-nav nav {
    gap: 12px;
  }

  .site-nav nav a {
    font-size: 0.78rem;
  }

  .hero {
    min-height: 90svh;
    padding: 96px 20px 56px;
  }

  .hero-shade {
    background:
      linear-gradient(180deg, rgba(11, 15, 14, 0.42) 0%, rgba(11, 15, 14, 0.88) 58%, var(--bg) 100%),
      linear-gradient(90deg, rgba(11, 15, 14, 0.82), rgba(11, 15, 14, 0.24));
  }

  .hero-copy {
    margin: 0 auto;
  }

  .intro,
  .play-pillars,
  .screens,
  .download,
  .feature-band {
    padding: 72px 0;
  }

  .split,
  .feature-layout,
  .feature-layout.reverse,
  .download-layout {
    grid-template-columns: 1fr;
    gap: 34px;
  }

  .feature-layout.reverse .phone-shot {
    order: 0;
  }

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

  .pillar-grid article {
    min-height: auto;
  }

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

  .download-layout .button {
    width: 100%;
  }

  footer {
    display: block;
  }

  footer p + p {
    margin-top: 8px;
  }
}

@media (max-width: 520px) {
  .container {
    width: min(100% - 28px, 1120px);
  }

  .site-nav nav a:nth-child(2),
  .site-nav nav a:nth-child(3) {
    display: none;
  }

  h1 {
    font-size: clamp(3.8rem, 24vw, 6.8rem);
  }

  h2 {
    font-size: 2rem;
  }

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

  .button {
    width: 100%;
  }
}