:root {
  color-scheme: dark;
  --bg: #0b0d0d;
  --panel: #15171a;
  --panel-soft: rgba(21, 23, 26, 0.72);
  --ink: #f4f4ef;
  --muted: #a6aaa4;
  --soft: #777d77;
  --line: rgba(244, 244, 239, 0.14);
  --signal: #baff12;
  --blue: #6e89ff;
  --max: 880px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 82% 8%, rgba(186, 255, 18, 0.12), transparent 330px),
    radial-gradient(circle at 18% 78%, rgba(110, 137, 255, 0.12), transparent 360px),
    linear-gradient(180deg, #101214 0%, var(--bg) 70%);
  color: var(--ink);
  font-family: Pretendard, "Apple SD Gothic Neo", "Malgun Gothic", Inter, system-ui, sans-serif;
  line-height: 1.68;
  word-break: keep-all;
}

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

a:hover {
  color: var(--signal);
}

.site {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0 72px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  min-height: 52px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 820;
  letter-spacing: 0.2em;
}

.brand-logo {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(186, 255, 18, 0.42), 0 0 18px rgba(186, 255, 18, 0.16);
}

.brand svg {
  display: block;
  height: 15px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 650;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 260px;
  gap: 44px;
  align-items: end;
  padding: 68px 0 54px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  margin: 0 0 14px;
  color: var(--signal);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1 {
  max-width: 760px;
  margin: 0;
  font-size: clamp(38px, 7.6vw, 68px);
  line-height: 1.16;
  letter-spacing: 0;
  word-break: keep-all;
  text-wrap: balance;
}

.lead {
  max-width: 650px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: clamp(16px, 2.3vw, 19px);
  line-height: 1.7;
  word-break: keep-all;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
  /* 버튼과 다음 섹션 구분선이 딱 붙어 보이지 않게 아래 여백 확보 */
  margin-bottom: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.025);
  color: var(--ink);
  font-size: 14px;
  font-weight: 780;
}

.button.primary {
  border-color: var(--signal);
  background: var(--signal);
  color: #090b09;
}

.signal-card {
  position: relative;
  min-height: 300px;
  border: 1px solid var(--line);
  border-radius: 30px;
  background:
    radial-gradient(circle at 32% 80%, rgba(186, 255, 18, 0.16), transparent 42%),
    radial-gradient(circle at 84% 18%, rgba(110, 137, 255, 0.16), transparent 36%),
    rgba(21, 23, 26, 0.68);
  overflow: hidden;
}

.dotfield {
  position: absolute;
  /* 하단 캡션(오늘의 어긋 ↗)과 도트가 겹치지 않게 아래 여백 확보 */
  inset: 34px 34px 66px;
  display: grid;
  grid-template-columns: repeat(13, 1fr);
  gap: 10px;
  opacity: 0.94;
}

.dotfield i {
  display: block;
  width: 4px;
  height: 4px;
  margin: auto;
  border-radius: 50%;
  background: rgba(244, 244, 239, 0.38);
}

.dotfield i:nth-child(5n),
.dotfield i:nth-child(19n),
.dotfield i:nth-child(31n) {
  background: var(--signal);
  box-shadow: 0 0 14px rgba(186, 255, 18, 0.38);
}

.dotfield i:nth-child(2n + 17) {
  opacity: 0.18;
}

.card-caption {
  position: absolute;
  left: 22px;
  right: 22px;
  bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.section {
  padding: 48px 0;
  border-bottom: 1px solid var(--line);
}

.section h2,
.section p,
.tile p,
.doc p,
.doc li {
  word-break: keep-all;
}

.section h2 {
  text-wrap: balance;
}

/* 넓은 화면에서는 한 줄, 좁은 화면에서만 줄바꿈 */
.mobile-break {
  display: none;
}

@media (max-width: 560px) {
  .mobile-break {
    display: block;
  }
}

.section h2,
.doc h1 {
  margin: 0 0 12px;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.1;
}

.section > p,
.doc > p {
  max-width: 680px;
  margin: 0;
  color: var(--muted);
  font-size: 17px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 28px;
}

.tile {
  min-height: 174px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel-soft);
}

.tile h3 {
  margin: 0 0 10px;
  font-size: 18px;
}

.tile p,
.tile li {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.doc {
  max-width: 780px;
  padding: 58px 0 40px;
}

.doc .updated {
  margin: 0 0 28px;
  color: var(--soft);
}

.doc section {
  padding: 30px 0;
  border-top: 1px solid var(--line);
}

.doc h2 {
  margin: 0 0 12px;
  font-size: 23px;
}

.doc p,
.doc li {
  color: var(--muted);
  font-size: 16px;
}

.doc ul {
  margin: 10px 0 0;
  padding-left: 20px;
}

.notice {
  margin: 26px 0 10px;
  padding: 20px;
  border: 1px solid rgba(186, 255, 18, 0.28);
  border-radius: 18px;
  background: rgba(186, 255, 18, 0.055);
}

.footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 14px;
  padding-top: 28px;
  color: var(--soft);
  font-size: 13px;
}

@media (max-width: 760px) {
  .site {
    width: min(100% - 28px, var(--max));
    padding-top: 20px;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    gap: 14px;
    font-size: 13px;
  }

  .hero {
    grid-template-columns: 1fr;
    gap: 26px;
    padding-top: 46px;
  }

  .signal-card {
    min-height: 230px;
  }

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