:root {
  color-scheme: light;
  --bg: #fbf8f3;
  --surface: #ffffff;
  --ink: #16232b;
  --muted: #5c6b76;
  --accent: #136586;
  --accent-ink: #0e4a63;
  --accent-soft: #e1f2ef;
  --border: rgba(22, 35, 43, 0.09);
  --radius-s: 6px;
  --radius-m: 10px;
  --radius-l: 14px;
  --radius-bubble: 18px;
  --shadow-card: 0 28px 70px rgba(26, 57, 71, 0.12), 0 8px 22px rgba(26, 57, 71, 0.08);
  --shadow-float: 0 18px 46px rgba(26, 57, 71, 0.16), 0 4px 12px rgba(26, 57, 71, 0.1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  overflow-x: hidden;
  overflow-x: clip;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  overflow-x: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: "Pretendard Variable", Pretendard, -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font: inherit;
}

img,
svg {
  display: block;
}

img {
  max-width: 100%;
  height: auto;
}

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

h1,
h2,
h3 {
  line-height: 1.12;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

h1 {
  margin-bottom: 24px;
  font-size: clamp(2.9rem, 4.45vw, 4rem);
  font-weight: 800;
}

h1 span {
  display: block;
  white-space: nowrap;
}

h2 {
  margin-bottom: 52px;
  font-size: clamp(2rem, 3.4vw, 3.6rem);
  font-weight: 760;
}

h3 {
  font-size: 1.35rem;
}

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
  border-radius: var(--radius-s);
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 10;
  min-height: 44px;
  padding: 10px 16px;
  transform: translateY(-150%);
  border-radius: var(--radius-s);
  background: var(--ink);
  color: var(--surface);
  font-weight: 700;
}

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

.container,
.narrow-container,
.nav-shell,
.hero-shell {
  width: min(100% - 48px, 1180px);
  margin-inline: auto;
}

.narrow-container {
  max-width: 840px;
}

.site-header {
  position: relative;
  z-index: 5;
}

.nav-shell {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: 72px;
  border-bottom: 1px solid var(--border);
}

.brand,
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  width: fit-content;
  font-size: 1.06rem;
  font-weight: 760;
  letter-spacing: -0.02em;
}

.brand {
  min-height: 44px;
}

.brand-mark {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  color: var(--surface);
}

.footer-brand-copy {
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}

.footer-brand-copy small {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 520;
  letter-spacing: -0.01em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 34px;
}

.nav-links a,
.footer-links a {
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 600;
}

.nav-links a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.nav-links a:hover,
.footer-links a:hover {
  color: var(--accent-ink);
}

.nav-shell > .button {
  justify-self: end;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: var(--radius-m);
  font-weight: 720;
  line-height: 1;
  white-space: nowrap;
  transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

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

.button:active {
  transform: translateY(0) scale(0.98);
}

.button-primary {
  background: var(--accent);
  color: var(--surface);
  box-shadow: 0 10px 24px rgba(19, 101, 134, 0.2);
}

.button-primary:hover {
  background: var(--accent);
  box-shadow: 0 14px 30px rgba(19, 101, 134, 0.24);
}

.button-dark {
  background: var(--ink);
  color: var(--surface);
}

.button-dark:hover {
  background: #263944;
}

.button-compact {
  min-height: 44px;
  padding-inline: 17px;
  font-size: 0.88rem;
}

.button-ghost {
  border-color: rgba(22, 35, 43, 0.16);
  background: rgba(255, 255, 255, 0.34);
  color: var(--ink);
}

.button-ghost:hover {
  border-color: rgba(22, 35, 43, 0.28);
  background: var(--surface);
}

.hero {
  min-height: calc(100dvh - 72px);
  display: flex;
  align-items: center;
  padding: clamp(56px, 7vw, 92px) 0 clamp(72px, 8vw, 112px);
}

.hero-shell {
  display: grid;
  grid-template-columns: minmax(0, 0.96fr) minmax(430px, 0.9fr);
  align-items: center;
  gap: clamp(44px, 7vw, 104px);
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.hero-lede {
  max-width: 590px;
  margin-bottom: 30px;
  color: var(--muted);
  font-size: clamp(1.05rem, 1.4vw, 1.2rem);
  line-height: 1.75;
  word-break: keep-all;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 19px;
}

.trust-line {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 600;
}

.hero-visual {
  position: relative;
  min-width: 0;
  margin-right: calc((100vw - min(100vw - 48px, 1180px)) / -2 - 40px);
  padding: 38px 0 0 32px;
}

.chat-frame {
  width: 100%;
  min-height: 584px;
  overflow: hidden;
  border: 1px solid rgba(22, 35, 43, 0.08);
  border-radius: var(--radius-l);
  background: var(--surface);
  box-shadow: var(--shadow-card);
}

.chat-header,
.chat-composer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 61px 18px 21px;
  border-bottom: 1px solid var(--border);
}

.chat-header div {
  display: grid;
  gap: 1px;
}

.chat-header strong {
  font-size: 0.96rem;
}

.chat-header div span {
  color: var(--muted);
  font-size: 0.73rem;
}

.availability {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 720;
}

.chat-thread {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 458px;
  padding: 28px 62px 24px 22px;
  background: linear-gradient(180deg, rgba(251, 248, 243, 0.45), rgba(251, 248, 243, 0.9));
}

.message-row {
  display: flex;
  margin-top: 13px;
}

.message-row.customer {
  justify-content: flex-end;
}

.bubble {
  max-width: 78%;
  margin: 0;
  padding: 12px 15px;
  border-radius: var(--radius-bubble);
  background: #edf0f2;
  color: var(--ink);
  font-size: 0.9rem;
  line-height: 1.55;
  word-break: keep-all;
}

.customer .bubble {
  border-bottom-right-radius: var(--radius-s);
  background: var(--ink);
  color: var(--surface);
}

.clerk .bubble {
  border-bottom-left-radius: var(--radius-s);
  background: var(--accent-soft);
}

.typing-row {
  display: none;
}

.typing-indicator {
  display: flex;
  align-items: center;
  gap: 4px;
  width: 54px;
  min-height: 42px;
}

.typing-indicator span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-ink);
  opacity: 0.42;
}

.confirmation-card {
  display: grid;
  gap: 10px;
  width: min(86%, 320px);
  padding: 16px;
  border: 1px solid rgba(19, 101, 134, 0.11);
  border-radius: var(--radius-bubble) var(--radius-bubble) var(--radius-bubble) var(--radius-s);
  background: var(--accent-soft);
}

.status-pill {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 25px;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--surface);
  font-size: 0.7rem;
  font-weight: 760;
  line-height: 1;
}

.confirmation-card strong {
  font-size: 0.92rem;
}

.confirmation-card p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.76rem;
}

.chat-composer {
  min-height: 63px;
  border-top: 1px solid var(--border);
  border-bottom: 0;
  color: #73818a;
  font-size: 0.8rem;
}

.send-button {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--ink);
}

.send-button svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: var(--surface);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.evidence-card {
  position: absolute;
  top: -30px;
  left: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  width: min(88%, 350px);
  min-height: 86px;
  padding: 16px 17px;
  border: 1px solid var(--border);
  border-radius: var(--radius-m);
  background: var(--surface);
  box-shadow: var(--shadow-float);
}

.evidence-card p {
  margin-bottom: 0;
}

.evidence-title {
  font-size: 0.9rem;
  font-weight: 750;
}

.evidence-meta {
  color: var(--muted);
  font-size: 0.76rem;
}

.chat-demo-ready [data-chat-step] {
  visibility: hidden;
  opacity: 0;
  transform: translateY(10px);
}

.chat-demo-ready .evidence-card {
  transform: translateY(-10px);
}

.chat-demo-ready .typing-row.is-visible,
.chat-demo-ready [data-chat-step].is-visible {
  visibility: visible;
  opacity: 1;
  transform: translateY(0);
  transition: opacity 320ms ease, transform 320ms ease;
}

.chat-demo-ready .typing-row.is-visible {
  display: flex;
}

.chat-demo-ready .typing-row.is-gone {
  display: none;
}

.section {
  padding: clamp(88px, 11vw, 152px) 0;
}

.how-section {
  background: var(--surface);
}

.how-section h2 {
  max-width: 670px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(30px, 5vw, 68px);
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: steps;
}

.step {
  position: relative;
  padding-top: 26px;
  border-top: 1px solid rgba(22, 35, 43, 0.2);
}

.step-number {
  display: block;
  margin-bottom: 38px;
  color: var(--accent-ink);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
  font-weight: 760;
}

.step h3 {
  margin-bottom: 14px;
}

.step p {
  margin-bottom: 18px;
  color: var(--muted);
  word-break: keep-all;
}

.step code {
  display: block;
  overflow-wrap: anywhere;
  padding: 13px;
  border-radius: var(--radius-s);
  background: #eef0ef;
  color: var(--ink);
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.72rem;
  line-height: 1.55;
}

.features-section {
  padding-bottom: 0;
}

.feature-rows {
  display: grid;
  gap: clamp(96px, 13vw, 160px);
}

.feature-row {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
  align-items: center;
  gap: clamp(42px, 7vw, 94px);
}

.feature-row h2 {
  margin-bottom: 24px;
}

.feature-copy p {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.8;
  word-break: keep-all;
}

.feature-image-wrap {
  position: relative;
}

.feature-image-wrap::before {
  content: "";
  position: absolute;
  inset: 18px -18px -18px 18px;
  z-index: -1;
  border-radius: var(--radius-l);
  background: var(--accent-soft);
}

.feature-image-wrap img {
  width: 100%;
  border-radius: var(--radius-l);
  box-shadow: 0 24px 64px rgba(26, 57, 71, 0.13);
}

.feature-owner {
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.14fr);
}

.dashboard-preview {
  overflow: hidden;
  padding: 0 22px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius-l);
  background: var(--surface);
  box-shadow: var(--shadow-card);
}

.dashboard-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  min-height: 68px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--border);
}

.dashboard-topbar span {
  color: var(--muted);
  font-size: 0.8rem;
  font-variant-numeric: tabular-nums;
}

.escalation-card {
  padding: 22px;
  border: 1px solid rgba(22, 35, 43, 0.12);
  border-radius: var(--radius-m);
  background: var(--bg);
}

.status-neutral {
  background: var(--ink);
}

.escalation-card p {
  margin: 17px 0 23px;
  font-weight: 660;
  line-height: 1.65;
  word-break: keep-all;
}

.escalation-actions {
  display: flex;
  gap: 9px;
}

.mini-button,
.copy-button {
  min-width: 64px;
  min-height: 44px;
  border: 1px solid rgba(22, 35, 43, 0.16);
  border-radius: var(--radius-s);
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 700;
  transition: background-color 180ms ease, color 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.mini-button:hover,
.copy-button:hover {
  border-color: rgba(22, 35, 43, 0.32);
}

.mini-button:active,
.copy-button:active {
  transform: scale(0.97);
}

.mini-button-primary {
  border-color: var(--ink);
  background: var(--ink);
  color: var(--surface);
}

.stats-section {
  margin-top: clamp(96px, 13vw, 160px);
  padding: clamp(80px, 8vw, 104px) 0;
  background: var(--ink);
  color: var(--surface);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(42px, 6vw, 82px);
}

.stat strong {
  display: block;
  margin-bottom: 14px;
  font-size: clamp(2.8rem, 5vw, 4.9rem);
  font-variant-numeric: tabular-nums;
  font-weight: 780;
  letter-spacing: -0.04em;
  line-height: 1;
}

.stat p {
  max-width: 290px;
  margin-bottom: 0;
  color: #c8d2d8;
  line-height: 1.65;
  word-break: keep-all;
}

.quick-start-section {
  background: var(--surface);
}

.quick-start-section h2 {
  text-align: center;
}

.code-panel {
  margin-bottom: 20px;
  overflow: hidden;
  border: 1px solid rgba(22, 35, 43, 0.11);
  border-radius: var(--radius-l);
  background: #17232a;
  box-shadow: 0 22px 52px rgba(26, 57, 71, 0.12);
}

.code-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 68px;
  padding: 12px 14px 12px 22px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-panel h3 {
  margin-bottom: 0;
  color: #f6f7f6;
  font-size: 0.9rem;
  letter-spacing: 0;
}

.copy-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-width: 86px;
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.07);
  color: #f6f7f6;
}

.copy-button:hover {
  border-color: rgba(255, 255, 255, 0.38);
  background: rgba(255, 255, 255, 0.12);
}

.copy-button:focus-visible {
  outline-color: var(--accent-soft);
}

.copy-button.is-copied {
  border-color: var(--accent-soft);
  background: var(--accent-soft);
  color: var(--accent-ink);
}

.copy-button svg {
  width: 17px;
  height: 17px;
  fill: none;
  stroke: currentColor;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

pre {
  margin: 0;
  overflow-x: auto;
  padding: 26px 24px 30px;
  color: #e7edef;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: clamp(0.74rem, 1.6vw, 0.92rem);
  line-height: 1.85;
  tab-size: 2;
}

code {
  font-family: inherit;
}

.code-caption {
  margin: 26px 0 0;
  color: var(--muted);
  text-align: center;
  font-size: 0.9rem;
}

.final-cta {
  padding: clamp(104px, 14vw, 160px) 0;
  text-align: center;
}

.final-cta h2 {
  margin-bottom: 34px;
}

.final-cta .trust-line {
  margin-top: 18px;
}

.site-footer {
  border-top: 1px solid var(--border);
}

.footer-shell {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
  min-height: 132px;
  padding-block: 26px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 12px 24px;
  color: var(--muted);
  font-size: 0.82rem;
}

.footer-links span {
  display: inline-flex;
  align-items: center;
}

.reveal-section {
  opacity: 1;
  transform: translateY(0);
}

.reveal-ready .reveal-section:not(.is-revealed) {
  opacity: 0;
  transform: translateY(18px);
}

.reveal-ready .reveal-section.is-revealed {
  transition: opacity 380ms ease, transform 380ms ease;
}

@media (max-width: 980px) {
  .hero {
    min-height: auto;
  }

  .hero-shell {
    grid-template-columns: minmax(0, 0.93fr) minmax(390px, 1.07fr);
    gap: 36px;
  }

  .nav-shell {
    grid-template-columns: auto 1fr;
  }

  .nav-links {
    display: none;
  }

  .feature-row,
  .feature-owner {
    gap: 48px;
  }
}

@media (max-width: 760px) {
  html {
    scroll-padding-top: 74px;
  }

  .container,
  .narrow-container,
  .nav-shell,
  .hero-shell {
    width: min(100% - 32px, 1180px);
  }

  .nav-shell {
    min-height: 68px;
  }

  .brand-mark {
    width: 32px;
    height: 32px;
  }

  .button-compact {
    padding-inline: 13px;
    font-size: 0.78rem;
  }

  .hero {
    padding: 52px 0 86px;
  }

  .hero-shell {
    grid-template-columns: minmax(0, 1fr);
    gap: 58px;
  }

  h1 {
    font-size: clamp(2rem, 10.2vw, 3.4rem);
  }

  h2 {
    margin-bottom: 38px;
    font-size: clamp(2rem, 10vw, 3.1rem);
  }

  .hero-lede {
    font-size: 1.03rem;
  }

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

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

  .hero-visual {
    width: 100%;
    margin-right: 0;
    padding: 0;
  }

  .chat-frame {
    min-height: 560px;
  }

  .chat-header,
  .chat-composer {
    padding-right: 21px;
  }

  .chat-thread {
    min-height: 434px;
    padding-right: 22px;
  }

  .evidence-card {
    position: relative;
    top: auto;
    left: auto;
    width: min(100%, 330px);
    margin-bottom: 14px;
  }

  .section {
    padding: 92px 0;
  }

  .steps,
  .feature-row,
  .feature-owner,
  .stats-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .steps {
    gap: 54px;
  }

  .step-number {
    margin-bottom: 22px;
  }

  .feature-rows {
    gap: 104px;
  }

  .feature-row,
  .feature-owner {
    gap: 44px;
  }

  .feature-owner .feature-copy {
    order: 1;
  }

  .feature-owner .dashboard-preview {
    order: 2;
  }

  .feature-image-wrap::before {
    inset: 12px -10px -12px 10px;
  }

  .dashboard-preview {
    padding-inline: 16px;
  }

  .escalation-card {
    padding: 18px;
  }

  .stats-section {
    margin-top: 104px;
    padding: 82px 0;
  }

  .stats-grid {
    gap: 54px;
  }

  .stat p {
    max-width: 330px;
  }

  .code-panel-header {
    padding-left: 16px;
  }

  pre {
    padding-inline: 18px;
  }

  .footer-shell {
    align-items: flex-start;
    flex-direction: column;
    padding-block: 38px;
  }

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

@media (max-width: 390px) {
  .nav-shell > .button {
    max-width: 190px;
  }

  .bubble {
    max-width: 84%;
  }

  .confirmation-card {
    width: 92%;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }

  .reveal-ready .reveal-section:not(.is-revealed),
  .chat-demo-ready [data-chat-step] {
    visibility: visible;
    opacity: 1;
    transform: none;
  }

  .chat-demo-ready .typing-row {
    display: none;
  }
}