:root {
  --bg: #11131b;
  --bg-soft: #191c28;
  --panel: #222638;
  --panel-strong: #2b3046;
  --ink: #f6f7fb;
  --muted: #b6bdd1;
  --line: rgba(255, 255, 255, 0.12);
  --accent: #00f0a8;
  --accent-2: #70a7ff;
  --danger: #ff3e5f;
  --shadow: 0 26px 80px rgba(0, 0, 0, 0.34);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 6%, rgba(0, 240, 168, 0.18), transparent 26rem),
    radial-gradient(circle at 88% 8%, rgba(112, 167, 255, 0.18), transparent 24rem),
    linear-gradient(145deg, #0f1119 0%, #181b28 54%, #11131b 100%);
  font-family: ui-sans-serif, "Pretendard", "Apple SD Gothic Neo", "Noto Sans KR", sans-serif;
  word-break: keep-all;
  overflow-wrap: break-word;
}

a {
  color: inherit;
}

code {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(10, 12, 18, 0.68);
  padding: 2px 6px;
  color: #d7fff2;
  font-size: 0.92em;
}

.shell {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
  padding: 28px 0 44px;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 28px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 15px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #0f1119;
  font-size: 24px;
  font-weight: 950;
}

.brand strong {
  display: block;
  font-size: 20px;
}

.brand span span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 750;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.nav-links a {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(34, 38, 56, 0.66);
  padding: 10px 13px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 850;
  text-decoration: none;
}

.nav-links a.active,
.nav-links a:hover {
  color: #10131a;
  background: var(--accent);
}

.panel,
.card,
.shot-frame {
  border: 1px solid var(--line);
  border-radius: 30px;
  background: rgba(34, 38, 56, 0.78);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.95fr) minmax(360px, 1.05fr);
  gap: 18px;
  align-items: center;
}

.hero-copy {
  padding: clamp(28px, 4vw, 48px);
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 950;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 18px;
  font-size: clamp(48px, 8vw, 88px);
  line-height: 0.92;
  letter-spacing: -0.07em;
}

h2 {
  margin-bottom: 12px;
  font-size: clamp(30px, 5vw, 54px);
  letter-spacing: -0.06em;
}

h3 {
  margin-bottom: 8px;
  font-size: 21px;
}

.lead {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.75;
}

.lead.compact {
  max-width: 820px;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #10131a;
  padding: 0 18px;
  font-weight: 950;
  text-decoration: none;
}

.button.secondary {
  border: 1px solid var(--line);
  color: var(--ink);
  background: rgba(15, 17, 25, 0.76);
}

.hero-shot {
  padding: 12px;
}

.hero-shot img,
.shot-frame img {
  display: block;
  width: 100%;
  border-radius: 22px;
}

.section {
  margin-top: 18px;
  padding: 26px;
}

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

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

.card {
  padding: 20px;
}

.card p,
.section > p,
.step-list p {
  color: var(--muted);
  line-height: 1.7;
}

.use-case-number {
  display: inline-grid;
  width: 42px;
  height: 42px;
  margin-bottom: 14px;
  place-items: center;
  border-radius: 14px;
  background: var(--accent);
  color: #10131a;
  font-weight: 950;
}

.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.pill-row span {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(15, 17, 25, 0.56);
  padding: 7px 9px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 850;
}

.shot-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.shot-frame {
  padding: 12px;
}

.shot-frame figcaption {
  margin-top: 12px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}

.shot-frame figcaption code {
  display: inline-block;
  max-width: 100%;
  overflow-wrap: anywhere;
}

.step-list {
  display: grid;
  gap: 12px;
}

.step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(15, 17, 25, 0.42);
  padding: 16px;
}

.step strong {
  display: grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 14px;
  background: var(--panel-strong);
  color: var(--accent);
}

.code-box {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #0b0e15;
  padding: 18px;
  color: #d7fff2;
  font-size: 13px;
  line-height: 1.65;
}

.warning {
  border-color: rgba(255, 62, 95, 0.28);
}

.warning .use-case-number {
  background: var(--danger);
  color: white;
}

.notice-card {
  border-color: rgba(255, 210, 92, 0.34);
  background:
    linear-gradient(135deg, rgba(255, 210, 92, 0.08), rgba(34, 38, 56, 0.78) 42%),
    rgba(34, 38, 56, 0.78);
}

.notice-card p:not(.eyebrow) {
  max-width: 920px;
  color: var(--muted);
  line-height: 1.8;
}

.footer {
  margin-top: 22px;
  color: var(--muted);
  font-size: 13px;
  text-align: center;
}

@media (max-width: 860px) {
  .nav,
  .hero {
    display: grid;
    grid-template-columns: 1fr;
  }

  .nav-links {
    justify-content: flex-start;
  }

  .grid,
  .grid.two,
  .shot-grid {
    grid-template-columns: 1fr;
  }
}