:root {
  color-scheme: dark;
  --ink: #07111f;
  --ink-soft: #0c1b2d;
  --panel: #102238;
  --line: rgba(181, 208, 235, 0.17);
  --text: #f4f8fc;
  --muted: #9eb0c2;
  --blue: #3478f6;
  --blue-light: #75a7ff;
  --mint: #44e0bd;
  --paper: #f5f8fb;
  --paper-text: #152235;
  --max-width: 1180px;
  font-family: Inter, Pretendard, "Noto Sans KR", "Apple SD Gothic Neo", system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 90px;
}

body {
  margin: 0;
  min-width: 320px;
  background: var(--ink);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

button,
a,
summary {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--mint);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  z-index: 100;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  transform: translateY(-150%);
  border-radius: 8px;
  background: white;
  color: #111;
  font-weight: 700;
}

.skip-link:focus {
  transform: translateY(0);
}

.shell {
  width: min(calc(100% - 48px), var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid var(--line);
  background: rgba(7, 17, 31, 0.82);
  backdrop-filter: blur(18px);
}

.site-header[data-scrolled="true"] {
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 48px), var(--max-width));
  min-height: 72px;
  margin: 0 auto;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 0.95rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand img {
  border-radius: 9px;
}

.desktop-nav {
  display: flex;
  gap: 30px;
  color: #c7d4e1;
  font-size: 0.9rem;
  font-weight: 650;
}

.desktop-nav a:hover,
.footer-links a:hover {
  color: white;
}

.button {
  display: inline-flex;
  min-height: 50px;
  align-items: center;
  justify-content: center;
  border: 1px solid transparent;
  border-radius: 12px;
  padding: 0 21px;
  font-size: 0.95rem;
  font-weight: 750;
  letter-spacing: -0.01em;
  transition: transform 160ms ease, border-color 160ms ease, background-color 160ms ease;
}

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

.button-small {
  min-height: 40px;
  padding: 0 16px;
  font-size: 0.86rem;
}

.button-primary {
  background: var(--blue);
  box-shadow: 0 14px 35px rgba(52, 120, 246, 0.28);
  color: white;
}

.button-primary:hover {
  background: #4b88f7;
}

.button-secondary,
.button-quiet {
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.04);
  color: #e5edf5;
}

.button-secondary:hover,
.button-quiet:hover {
  border-color: rgba(181, 208, 235, 0.4);
  background: rgba(255, 255, 255, 0.08);
}

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background-image: linear-gradient(rgba(101, 151, 202, 0.045) 1px, transparent 1px), linear-gradient(90deg, rgba(101, 151, 202, 0.045) 1px, transparent 1px);
  background-size: 48px 48px;
}

.hero-glow {
  position: absolute;
  top: -280px;
  left: 45%;
  width: 680px;
  height: 680px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(52, 120, 246, 0.22), transparent 66%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  min-height: 740px;
  align-items: center;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 56px;
  padding: 92px 0 86px;
}

.eyebrow,
.section-kicker {
  margin: 0 0 24px;
  color: var(--blue-light);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 750;
  letter-spacing: 0.12em;
}

.status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 14px rgba(68, 224, 189, 0.8);
}

.hero h1,
.section-heading h2,
.closing-card h2 {
  margin: 0;
  font-weight: 840;
  letter-spacing: -0.055em;
  line-height: 1.08;
  word-break: keep-all;
}

.hero h1 {
  max-width: 610px;
  font-size: clamp(3.15rem, 5.8vw, 5.3rem);
}

.hero h1 span {
  color: var(--blue-light);
}

.hero-lead {
  max-width: 580px;
  margin: 30px 0 0;
  color: #b8c8d8;
  font-size: 1.08rem;
  line-height: 1.85;
  word-break: keep-all;
}

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

.hero-facts {
  display: flex;
  gap: 28px;
  margin: 42px 0 0;
}

.hero-facts div {
  min-width: 92px;
}

.hero-facts dt {
  color: #6f859a;
  font-size: 0.75rem;
  font-weight: 700;
}

.hero-facts dd {
  margin: 3px 0 0;
  color: #ecf3fa;
  font-size: 0.95rem;
  font-weight: 750;
}

.product-stage {
  position: relative;
  min-width: 0;
  padding: 48px 0 42px;
}

.radar-orbit {
  position: absolute;
  border: 1px solid rgba(107, 163, 255, 0.18);
  border-radius: 50%;
  pointer-events: none;
}

.orbit-one {
  top: -40px;
  right: -80px;
  width: 520px;
  height: 520px;
}

.orbit-two {
  top: 35px;
  right: -5px;
  width: 360px;
  height: 360px;
}

.product-window {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(174, 205, 236, 0.22);
  border-radius: 18px;
  background: #0b1828;
  box-shadow: 0 36px 90px rgba(0, 0, 0, 0.45), 0 0 0 10px rgba(255, 255, 255, 0.025);
  transform: perspective(1200px) rotateY(-3deg) rotateX(1deg);
}

.window-bar {
  display: flex;
  height: 48px;
  align-items: center;
  gap: 7px;
  border-bottom: 1px solid var(--line);
  padding: 0 16px;
  color: #8ea2b6;
  font-size: 0.7rem;
}

.window-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #42566b;
}

.window-title {
  margin-left: 7px;
  font-weight: 650;
}

.sample-label {
  margin-left: auto;
  color: #657b91;
}

.workspace {
  display: grid;
  min-height: 405px;
  grid-template-columns: 92px 1fr;
}

.workspace-nav {
  display: flex;
  flex-direction: column;
  gap: 7px;
  border-right: 1px solid var(--line);
  padding: 18px 10px;
  background: #0a1523;
}

.workspace-logo {
  display: grid;
  width: 30px;
  height: 30px;
  margin: 0 8px 14px;
  place-items: center;
  border-radius: 8px;
  background: var(--blue);
  font-size: 0.66rem;
  font-weight: 850;
}

.nav-item {
  display: block;
  border-radius: 7px;
  padding: 7px 8px;
  color: #738aa0;
  font-size: 0.68rem;
  font-weight: 650;
}

.nav-item.is-active {
  background: rgba(52, 120, 246, 0.16);
  color: #aecaff;
}

.nav-bottom {
  margin-top: auto;
}

.workspace-main {
  min-width: 0;
  padding: 24px 22px;
}

.workspace-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
}

.workspace-heading strong {
  display: block;
  margin-top: 3px;
  font-size: 1rem;
  letter-spacing: -0.025em;
}

.micro-label {
  color: #71879b;
  font-size: 0.65rem;
  font-weight: 700;
}

.quota-chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 8px;
  color: #8fa4b8;
  font-size: 0.62rem;
}

.metric-row {
  display: grid;
  margin: 22px 0;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.metric {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.02);
}

.metric span {
  display: block;
  color: #72879c;
  font-size: 0.61rem;
}

.metric b {
  display: block;
  margin-top: 4px;
  font-size: 1.05rem;
}

.channel-table {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 10px;
}

.table-head,
.table-row {
  display: grid;
  align-items: center;
  grid-template-columns: 1.7fr 0.75fr 0.85fr 0.55fr;
  column-gap: 8px;
  padding: 10px 12px;
  font-size: 0.62rem;
}

.table-head {
  border-bottom: 1px solid var(--line);
  color: #657a8e;
  font-weight: 750;
}

.table-row {
  border-bottom: 1px solid rgba(181, 208, 235, 0.09);
  color: #9fb0c0;
}

.table-row:last-child {
  border-bottom: 0;
}

.table-row.is-selected {
  background: rgba(52, 120, 246, 0.1);
}

.channel-name {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 7px;
  overflow: hidden;
  color: #e7eef5;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.avatar {
  display: inline-block;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  border-radius: 6px;
}

.avatar-a { background: linear-gradient(135deg, #f36c57, #923b92); }
.avatar-b { background: linear-gradient(135deg, #55bad2, #3d5bc2); }
.avatar-c { background: linear-gradient(135deg, #e8ad45, #408d6c); }

.review-state,
.approved-state {
  justify-self: start;
  border-radius: 999px;
  padding: 2px 6px;
  background: rgba(239, 179, 68, 0.13);
  color: #efc676;
}

.approved-state {
  background: rgba(68, 224, 189, 0.12);
  color: #76dfc7;
}

.beta-notice {
  border-bottom: 1px solid var(--line);
  background: #0b1a2b;
}

.notice-inner {
  display: flex;
  min-height: 84px;
  align-items: center;
  gap: 24px;
}

.notice-inner strong {
  flex: 0 0 auto;
  color: #dce8f4;
}

.notice-inner p {
  margin: 0;
  color: #8fa3b7;
}

.section {
  padding: 130px 0;
}

.section-heading {
  max-width: 610px;
  margin-bottom: 56px;
}

.section-heading h2 {
  font-size: clamp(2.5rem, 4.5vw, 4.4rem);
}

.section-heading > p:last-child {
  max-width: 580px;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.85;
  word-break: keep-all;
}

.workflow-grid {
  display: grid;
  margin: 0;
  padding: 0;
  grid-template-columns: repeat(4, 1fr);
  list-style: none;
  border-top: 1px solid var(--line);
}

.workflow-grid li {
  position: relative;
  min-height: 285px;
  border-right: 1px solid var(--line);
  padding: 30px 26px 24px 0;
}

.workflow-grid li + li {
  padding-left: 26px;
}

.workflow-grid li:last-child {
  border-right: 0;
}

.step-number,
.feature-index,
.audience-tag {
  color: var(--blue-light);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.75rem;
  font-weight: 750;
  letter-spacing: 0.1em;
}

.workflow-grid h3,
.feature-card h3,
.audience-grid h3 {
  margin: 74px 0 12px;
  font-size: 1.25rem;
  letter-spacing: -0.035em;
}

.workflow-grid p,
.feature-card p,
.audience-grid p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
  word-break: keep-all;
}

.product-section {
  background: var(--paper);
  color: var(--paper-text);
}

.split-grid {
  display: grid;
  grid-template-columns: 0.88fr 1.12fr;
  gap: 80px;
}

.sticky-heading {
  position: sticky;
  top: 120px;
  align-self: start;
}

.product-section .section-kicker {
  color: #2d67cf;
}

.product-section .section-heading > p:last-child {
  color: #56667a;
}

.feature-stack {
  display: grid;
  gap: 14px;
}

.feature-card {
  display: grid;
  min-height: 210px;
  grid-template-columns: 50px 1fr;
  gap: 22px;
  border: 1px solid #d8e1ea;
  border-radius: 18px;
  padding: 30px;
  background: #fff;
  box-shadow: 0 8px 28px rgba(42, 62, 86, 0.05);
}

.feature-card-accent {
  border-color: #8fb5fb;
  box-shadow: 0 14px 40px rgba(52, 120, 246, 0.11);
}

.feature-card h3 {
  margin: 0 0 12px;
}

.feature-card p {
  color: #5b6b7d;
}

.platforms {
  display: inline-block;
  margin-top: 20px;
  border-radius: 999px;
  padding: 6px 10px;
  background: #eef4ff;
  color: #295db9;
  font-size: 0.78rem;
  font-weight: 750;
}

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

.section-heading-wide {
  max-width: 760px;
}

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

.audience-grid article {
  min-height: 300px;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 28px;
  background: rgba(255, 255, 255, 0.025);
}

.audience-grid h3 {
  margin-top: 78px;
}

.faq-section {
  background: #091625;
}

.faq-layout {
  display: grid;
  grid-template-columns: 0.72fr 1.28fr;
  gap: 80px;
}

.faq-list {
  border-top: 1px solid var(--line);
}

.faq-list details {
  border-bottom: 1px solid var(--line);
}

.faq-list summary {
  position: relative;
  padding: 24px 52px 24px 0;
  cursor: pointer;
  font-size: 1.04rem;
  font-weight: 750;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  position: absolute;
  top: 21px;
  right: 5px;
  content: "+";
  color: var(--blue-light);
  font-size: 1.4rem;
  font-weight: 400;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list p {
  max-width: 700px;
  margin: -4px 50px 24px 0;
  color: var(--muted);
}

.closing-section {
  padding: 28px 0 100px;
  background: #091625;
}

.closing-card {
  display: grid;
  overflow: hidden;
  min-height: 370px;
  align-items: end;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 50px;
  border-radius: 24px;
  padding: 52px;
  background: var(--blue);
  background-image: radial-gradient(circle at 80% -20%, rgba(255, 255, 255, 0.3), transparent 50%);
}

.closing-card .section-kicker {
  color: rgba(255, 255, 255, 0.72);
}

.closing-card h2 {
  font-size: clamp(2.1rem, 3.5vw, 3.6rem);
}

.closing-action {
  justify-self: end;
  max-width: 340px;
}

.button-light {
  background: white;
  color: #194ca8;
}

.closing-action p {
  margin: 16px 0 0;
  color: rgba(255, 255, 255, 0.78);
  font-size: 0.88rem;
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 42px 0;
  background: #06101d;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 30px;
}

.footer-brand {
  color: #dce7f2;
}

.footer-inner p {
  margin: 13px 0 0;
  color: #718599;
  font-size: 0.78rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 22px;
  color: #8ca0b4;
  font-size: 0.84rem;
  font-weight: 650;
}

@media (max-width: 980px) {
  .desktop-nav {
    display: none;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .hero-copy {
    max-width: 690px;
  }

  .product-stage {
    width: 100%;
    max-width: 760px;
    margin: 0 auto;
  }

  .product-window {
    transform: none;
  }

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

  .workflow-grid li:nth-child(2) {
    border-right: 0;
  }

  .workflow-grid li:nth-child(n + 3) {
    border-top: 1px solid var(--line);
  }

  .workflow-grid li:nth-child(3) {
    padding-left: 0;
  }

  .split-grid,
  .faq-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .sticky-heading {
    position: static;
  }

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

  .audience-grid article {
    min-height: 230px;
  }

  .audience-grid h3 {
    margin-top: 48px;
  }

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

  .closing-action {
    justify-self: start;
  }
}

@media (max-width: 640px) {
  .shell,
  .header-inner {
    width: min(calc(100% - 32px), var(--max-width));
  }

  .site-header .button {
    display: none;
  }

  .header-inner {
    min-height: 64px;
  }

  .hero-grid {
    min-height: 0;
    padding: 72px 0 64px;
  }

  .hero h1 {
    font-size: clamp(2.75rem, 15vw, 4rem);
  }

  .hero-lead {
    font-size: 1rem;
  }

  .hero-actions {
    display: grid;
  }

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

  .hero-facts {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
  }

  .hero-facts div {
    min-width: 0;
  }

  .product-stage {
    margin-right: -16px;
    width: calc(100% + 16px);
    overflow: hidden;
  }

  .product-window {
    min-width: 560px;
    border-radius: 14px 0 0 14px;
  }

  .notice-inner {
    display: block;
    padding-top: 20px;
    padding-bottom: 20px;
  }

  .notice-inner p {
    margin-top: 5px;
  }

  .section {
    padding: 90px 0;
  }

  .section-heading {
    margin-bottom: 42px;
  }

  .section-heading h2 {
    font-size: clamp(2.3rem, 12vw, 3.5rem);
  }

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

  .workflow-grid li,
  .workflow-grid li + li,
  .workflow-grid li:nth-child(3) {
    min-height: 230px;
    border-top: 1px solid var(--line);
    border-right: 0;
    padding: 26px 0;
  }

  .workflow-grid h3 {
    margin-top: 48px;
  }

  .feature-card {
    min-height: 0;
    grid-template-columns: 1fr;
    padding: 24px;
  }

  .closing-section {
    padding-bottom: 50px;
  }

  .closing-card {
    min-height: 450px;
    padding: 32px 24px;
    border-radius: 18px;
  }

  .button-light {
    width: 100%;
  }

  .footer-inner {
    display: block;
  }

  .footer-links {
    margin-top: 28px;
  }
}

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

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