:root {
  color-scheme: dark;
  --bg: #08090b;
  --bg-soft: #111317;
  --ink: #f8f8f5;
  --muted: #b5b7b9;
  --line: rgba(255, 255, 255, 0.15);
  --panel: rgba(255, 255, 255, 0.07);
  --panel-strong: rgba(255, 255, 255, 0.12);
  --accent: #39d8c8;
  --accent-warm: #ff5a36;
  --header-height: 72px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: Inter, Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", Arial, sans-serif;
}

body {
  overflow: hidden;
}

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

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

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 20;
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 40px;
  background: rgba(8, 9, 11, 0.72);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}

.brand,
.site-nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 10px;
  font-size: 14px;
  font-weight: 800;
}

.brand-mark {
  width: 34px;
  height: 34px;
  object-fit: contain;
}

.site-nav {
  gap: 26px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 700;
}

.site-nav a {
  transition: color 160ms ease;
}

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

.section-dots {
  position: fixed;
  right: 28px;
  top: 50%;
  z-index: 20;
  display: grid;
  gap: 12px;
  transform: translateY(-50%);
}

.section-dots a {
  width: 9px;
  height: 9px;
  border: 1px solid rgba(255, 255, 255, 0.55);
  background: transparent;
  transition: background 160ms ease, transform 160ms ease, border-color 160ms ease;
}

.section-dots a[aria-current="true"] {
  background: var(--accent);
  border-color: var(--accent);
  transform: scale(1.35);
}

.snap-stage {
  height: 100svh;
  overflow-y: auto;
  scroll-snap-type: y mandatory;
  scroll-behavior: smooth;
}

.snap-section {
  position: relative;
  min-height: 100svh;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + 34px) 72px 44px;
}

.hero-section {
  justify-content: flex-start;
  background: #060607;
}

.hero-media,
.gym-media,
.launch-media {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-media img,
.gym-media img,
.launch-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.98) contrast(1.05);
}

.hero-media::after,
.gym-media::after,
.launch-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(6, 6, 7, 0.95) 0%, rgba(6, 6, 7, 0.76) 39%, rgba(6, 6, 7, 0.18) 100%),
    linear-gradient(0deg, rgba(6, 6, 7, 0.76) 0%, rgba(6, 6, 7, 0.12) 48%, rgba(6, 6, 7, 0.58) 100%);
}

.hero-copy,
.launch-copy,
.section-grid {
  position: relative;
  z-index: 1;
}

.hero-copy {
  width: min(710px, 92vw);
}

.hero-logo {
  width: 150px;
  height: 150px;
  object-fit: contain;
  margin-bottom: 28px;
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
}

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

h1 {
  max-width: 720px;
  margin-bottom: 26px;
  font-size: 64px;
  line-height: 1.02;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 22px;
  font-size: 46px;
  line-height: 1.08;
  letter-spacing: 0;
}

h3 {
  margin-bottom: 14px;
  font-size: 22px;
  line-height: 1.2;
  letter-spacing: 0;
}

.lead,
.section-copy p,
.launch-copy p {
  color: var(--muted);
  font-size: 19px;
  line-height: 1.75;
}

.lead {
  max-width: 650px;
}

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

.primary-action,
.secondary-action {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid transparent;
  font-size: 15px;
  font-weight: 800;
}

.primary-action {
  background: var(--ink);
  color: var(--bg);
}

.secondary-action {
  border-color: rgba(255, 255, 255, 0.34);
  color: var(--ink);
}

.network-section,
.flow-section {
  background:
    linear-gradient(180deg, #0b0d10 0%, #111317 100%);
}

.section-grid {
  width: min(1180px, 100%);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
  gap: 58px;
}

.section-grid.reverse {
  grid-template-columns: minmax(320px, 0.84fr) minmax(0, 1.16fr);
}

.section-copy {
  max-width: 560px;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.value-card {
  min-height: 220px;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.card-index,
.operator-board span,
.launch-steps span,
.match-card span {
  display: block;
  margin-bottom: 18px;
  color: var(--accent-warm);
  font-size: 12px;
  font-weight: 900;
  text-transform: uppercase;
}

.value-card p,
.operator-board p,
.match-card small {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.65;
}

.phone-visual {
  width: min(390px, 100%);
  margin: 0 auto;
  padding: 18px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.045)),
    #0a0c0f;
  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.4);
}

.phone-top {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 10px 22px;
  border-bottom: 1px solid var(--line);
}

.phone-top span {
  color: var(--accent);
  font-size: 12px;
  font-weight: 900;
}

.phone-top strong {
  font-size: 20px;
}

.match-card {
  margin-top: 14px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.055);
}

.match-card.active {
  border-color: rgba(57, 216, 200, 0.62);
  background: rgba(57, 216, 200, 0.12);
}

.match-card strong {
  display: block;
  margin-bottom: 10px;
  font-size: 18px;
  line-height: 1.35;
}

.plain-list {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  color: var(--ink);
  font-size: 16px;
  font-weight: 700;
}

.plain-list li {
  padding-left: 22px;
  border-left: 3px solid var(--accent);
  line-height: 1.5;
}

.gym-section {
  background: #070809;
}

.gym-media img {
  object-position: center;
}

.gym-media::after {
  background:
    linear-gradient(90deg, rgba(6, 6, 7, 0.93) 0%, rgba(6, 6, 7, 0.76) 45%, rgba(6, 6, 7, 0.45) 100%),
    linear-gradient(180deg, rgba(6, 6, 7, 0.52), rgba(6, 6, 7, 0.84));
}

.operator-board {
  display: grid;
  gap: 14px;
}

.operator-board div {
  display: grid;
  grid-template-columns: 130px minmax(0, 170px) minmax(0, 1fr);
  align-items: center;
  gap: 18px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(8, 9, 11, 0.62);
  backdrop-filter: blur(12px);
}

.operator-board span {
  margin: 0;
}

.operator-board strong {
  font-size: 22px;
}

.launch-section {
  justify-content: center;
  text-align: center;
  background: #070809;
}

.launch-media img {
  object-position: center;
  opacity: 0.68;
}

.launch-media::after {
  background:
    linear-gradient(180deg, rgba(7, 8, 9, 0.78), rgba(7, 8, 9, 0.56), rgba(7, 8, 9, 0.9)),
    linear-gradient(90deg, rgba(7, 8, 9, 0.82), rgba(7, 8, 9, 0.26), rgba(7, 8, 9, 0.82));
}

.launch-copy {
  width: min(880px, 100%);
}

.launch-copy p {
  max-width: 710px;
  margin-left: auto;
  margin-right: auto;
}

.launch-steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 42px;
  text-align: left;
}

.launch-steps div {
  min-height: 132px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(8, 9, 11, 0.62);
}

.launch-steps strong {
  display: block;
  font-size: 20px;
  line-height: 1.38;
}

.site-footer {
  display: flex;
  justify-content: center;
  gap: 26px;
  margin-top: 50px;
  color: rgba(255, 255, 255, 0.62);
  font-size: 13px;
  font-weight: 800;
}

@media (max-width: 980px) {
  .site-header {
    padding: 0 22px;
  }

  .site-nav {
    gap: 16px;
  }

  .section-dots {
    display: none;
  }

  .snap-section {
    align-items: flex-start;
    padding: calc(var(--header-height) + 24px) 24px 36px;
  }

  h1 {
    font-size: 42px;
    line-height: 1.08;
  }

  h2 {
    font-size: 34px;
    line-height: 1.14;
  }

  .lead,
  .section-copy p,
  .launch-copy p {
    font-size: 17px;
    line-height: 1.68;
  }

  .hero-logo {
    width: 118px;
    height: 118px;
    margin-bottom: 22px;
  }

  .section-grid,
  .section-grid.reverse {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .section-copy {
    max-width: none;
  }

  .value-grid,
  .launch-steps {
    grid-template-columns: 1fr;
  }

  .value-card {
    min-height: auto;
  }

  .operator-board div {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

@media (max-width: 640px) {
  :root {
    --header-height: 62px;
  }

  .site-header {
    gap: 12px;
  }

  .brand span {
    font-size: 12px;
  }

  .brand-mark {
    width: 28px;
    height: 28px;
  }

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

  .snap-stage {
    scroll-snap-type: y proximity;
  }

  .snap-section {
    padding-left: 18px;
    padding-right: 18px;
  }

  h1 {
    font-size: 34px;
  }

  h2 {
    font-size: 28px;
  }

  h3 {
    font-size: 20px;
  }

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

  .primary-action,
  .secondary-action {
    width: 100%;
  }

  .phone-visual {
    width: 100%;
  }

  .launch-steps div {
    min-height: auto;
  }

  .site-footer {
    flex-direction: column;
    gap: 8px;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}