:root {
  --navy-950: #050d19;
  --navy-900: #071426;
  --navy-850: #0a192d;
  --navy-800: #0d2038;
  --navy-700: #142d49;
  --mint: #5ef5ce;
  --mint-soft: #a7ffe8;
  --blue: #76a8ff;
  --white: #f5f9ff;
  --text: #dbe6f5;
  --muted: #8fa3bd;
  --line: rgba(153, 183, 218, 0.16);
  --panel: rgba(13, 32, 56, 0.68);
  --radius-lg: 32px;
  --radius-md: 22px;
  --shadow: 0 28px 80px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 5% 0%, rgba(62, 122, 179, 0.08), transparent 27rem),
    var(--navy-950);
  font-family: "Noto Sans KR", sans-serif;
  font-size: 16px;
  line-height: 1.7;
  word-break: keep-all;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

::selection {
  color: var(--navy-950);
  background: var(--mint);
}

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

button,
input,
textarea,
select {
  font: inherit;
}

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

.container {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
}

.section {
  position: relative;
  padding: 140px 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 200;
  top: 12px;
  left: 12px;
  padding: 10px 16px;
  color: var(--navy-950);
  background: var(--mint);
  transform: translateY(-150%);
  transition: transform 0.2s ease;
}

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

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  right: 0;
  left: 0;
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease, backdrop-filter 0.3s ease;
}

.site-header.scrolled {
  border-color: var(--line);
  background: rgba(5, 13, 25, 0.82);
  backdrop-filter: blur(18px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 82px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
  font-family: "Manrope", sans-serif;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand strong {
  color: var(--mint);
}

.brand-n {
  color: var(--white);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 36px;
  color: #b8c7d9;
  font-size: 14px;
  font-weight: 600;
}

.site-nav a:not(.nav-cta) {
  transition: color 0.2s ease;
}

.site-nav a:not(.nav-cta):hover {
  color: var(--mint);
}

.nav-cta {
  padding: 10px 18px;
  color: var(--navy-950);
  border-radius: 999px;
  background: var(--mint);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(94, 245, 206, 0.18);
}

.menu-toggle {
  display: none;
}

.hero {
  display: flex;
  align-items: center;
  min-height: 900px;
  padding-top: 150px;
  overflow: hidden;
  background:
    linear-gradient(rgba(94, 245, 206, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(94, 245, 206, 0.025) 1px, transparent 1px);
  background-size: 64px 64px;
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 200px;
  content: "";
  background: linear-gradient(transparent, var(--navy-950));
  pointer-events: none;
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.02fr 0.98fr;
  gap: 42px;
  align-items: center;
}

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

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 24px;
  color: var(--mint);
  font-family: "Manrope", "Noto Sans KR", sans-serif;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hero .eyebrow span {
  width: 30px;
  height: 1px;
  background: var(--mint);
}

.hero h1 {
  max-width: 720px;
  margin: 0;
  color: var(--white);
  font-size: clamp(46px, 5vw, 70px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.055em;
}

h1 em,
h2 em {
  color: var(--mint);
  font-style: normal;
}

.hero-description {
  max-width: 650px;
  margin: 28px 0 0;
  color: #a7b8cc;
  font-size: 18px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 40px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  min-height: 56px;
  padding: 0 25px;
  border: 1px solid transparent;
  border-radius: 14px;
  cursor: pointer;
  font-weight: 700;
  transition: transform 0.22s ease, background 0.22s ease, border-color 0.22s ease, box-shadow 0.22s ease;
}

.button:hover {
  transform: translateY(-3px);
}

.button-primary {
  color: var(--navy-950);
  background: var(--mint);
  box-shadow: 0 18px 45px rgba(94, 245, 206, 0.12);
}

.button-primary:hover {
  background: var(--mint-soft);
  box-shadow: 0 20px 50px rgba(94, 245, 206, 0.2);
}

.button-ghost {
  color: var(--white);
  border-color: var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.button-ghost:hover {
  border-color: rgba(94, 245, 206, 0.4);
  background: rgba(94, 245, 206, 0.06);
}

.hero-proof {
  display: flex;
  gap: 35px;
  margin-top: 58px;
}

.hero-proof div {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 110px;
}

.hero-proof div + div::before {
  position: absolute;
  top: 3px;
  bottom: 3px;
  left: -18px;
  width: 1px;
  content: "";
  background: var(--line);
}

.hero-proof strong {
  color: var(--white);
  font-family: "Manrope", sans-serif;
  font-size: 22px;
  line-height: 1.3;
}

.hero-proof span {
  color: var(--muted);
  font-size: 12px;
}

.hero-visual {
  position: relative;
  min-width: 0;
  padding: 28px 22px 20px;
  border: 1px solid rgba(94, 245, 206, 0.14);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 48% 45%, rgba(94, 245, 206, 0.08), transparent 36%),
    rgba(7, 20, 38, 0.58);
  box-shadow: var(--shadow), inset 0 1px rgba(255, 255, 255, 0.03);
  backdrop-filter: blur(12px);
}

.hero-visual::before,
.hero-visual::after {
  position: absolute;
  width: 32px;
  height: 32px;
  content: "";
  pointer-events: none;
}

.hero-visual::before {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--mint);
  border-left: 2px solid var(--mint);
  border-radius: var(--radius-lg) 0 0;
}

.hero-visual::after {
  right: -1px;
  bottom: -1px;
  border-right: 2px solid var(--mint);
  border-bottom: 2px solid var(--mint);
  border-radius: 0 0 var(--radius-lg);
}

.visual-label,
.visual-caption {
  font-family: "Manrope", "Noto Sans KR", sans-serif;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.visual-label {
  color: #7690ae;
}

.knowledge-map {
  display: block;
  width: 100%;
  height: auto;
}

.map-lines path {
  stroke-dasharray: 6 9;
  animation: line-flow 18s linear infinite;
}

@keyframes line-flow {
  to {
    stroke-dashoffset: -300;
  }
}

.core-ring {
  stroke: rgba(94, 245, 206, 0.44);
  stroke-width: 1.5;
  stroke-dasharray: 8 8;
  transform-origin: 300px 250px;
  animation: spin 22s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.core-node circle {
  fill: #0a2638;
  stroke: var(--mint);
  stroke-width: 2;
}

.core-node text,
.result-node text {
  fill: var(--white);
  font-family: "Manrope", sans-serif;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.core-node .core-sub,
.result-node .node-sub {
  fill: var(--mint);
  font-size: 8px;
  font-weight: 600;
}

.data-node circle {
  fill: #0c1f36;
  stroke: rgba(118, 168, 255, 0.46);
  stroke-width: 1.5;
}

.data-node text {
  fill: #c9d7e9;
  font-size: 9px;
  font-weight: 600;
}

.result-node rect {
  fill: #0d2038;
  stroke: rgba(94, 245, 206, 0.55);
  stroke-width: 1.5;
}

.flow-points circle {
  fill: var(--mint);
  filter: url("#glow");
}

.node-one,
.node-four {
  animation: float 5s ease-in-out infinite;
}

.node-two,
.node-six {
  animation: float 6s 0.8s ease-in-out infinite reverse;
}

.node-three,
.node-five {
  animation: float 5.6s 1.4s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-7px);
  }
}

.visual-caption {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  color: #a9bbd0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(5, 13, 25, 0.55);
  letter-spacing: 0;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 5px rgba(94, 245, 206, 0.1);
}

.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(1px);
  pointer-events: none;
}

.hero-orb-one {
  top: 170px;
  right: -190px;
  width: 520px;
  height: 520px;
  border: 1px solid rgba(94, 245, 206, 0.09);
}

.hero-orb-two {
  right: -110px;
  bottom: 30px;
  width: 330px;
  height: 330px;
  border: 1px solid rgba(118, 168, 255, 0.08);
}

.section-heading {
  margin-bottom: 70px;
}

.section-heading.narrow {
  max-width: 790px;
}

.section-heading.centered {
  max-width: 760px;
  margin-right: auto;
  margin-left: auto;
  text-align: center;
}

.section-heading.centered .eyebrow {
  justify-content: center;
}

.section-heading h2,
.deliverables-copy h2,
.diagnosis-copy h2 {
  margin: 0;
  color: var(--white);
  font-size: clamp(36px, 4.2vw, 56px);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.045em;
}

.section-heading > p:not(.eyebrow),
.split-heading > p,
.deliverables-copy > p,
.diagnosis-copy > p {
  color: var(--muted);
  font-size: 17px;
}

.split-heading {
  display: grid;
  grid-template-columns: 1.45fr 0.55fr;
  gap: 80px;
  align-items: end;
}

.split-heading > p {
  margin: 0 0 8px;
}

.problem {
  background: var(--navy-950);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.problem-card {
  position: relative;
  min-height: 285px;
  padding: 38px 34px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(145deg, rgba(15, 37, 63, 0.72), rgba(8, 23, 42, 0.72));
  transition: transform 0.3s ease, border-color 0.3s ease;
}

.problem-card:hover {
  border-color: rgba(94, 245, 206, 0.32);
  transform: translateY(-7px);
}

.problem-card.featured {
  border-color: rgba(94, 245, 206, 0.3);
  background: linear-gradient(145deg, rgba(18, 52, 72, 0.85), rgba(8, 28, 45, 0.82));
}

.problem-card::after {
  position: absolute;
  right: -60px;
  bottom: -90px;
  width: 180px;
  height: 180px;
  content: "";
  border-radius: 50%;
  background: rgba(94, 245, 206, 0.035);
}

.card-number {
  position: absolute;
  top: 30px;
  right: 30px;
  color: #56708d;
  font-family: "Manrope", sans-serif;
  font-size: 12px;
  font-weight: 700;
}

.line-icon {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  margin-bottom: 48px;
  border: 1px solid rgba(94, 245, 206, 0.25);
  border-radius: 16px;
  background: rgba(94, 245, 206, 0.06);
}

.line-icon svg {
  width: 28px;
  fill: none;
  stroke: var(--mint);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
}

.problem-card h3 {
  margin: 0 0 16px;
  color: var(--white);
  font-size: 22px;
}

.problem-card p {
  margin: 0;
  color: var(--muted);
}

.solution {
  border-top: 1px solid rgba(255, 255, 255, 0.025);
  background:
    radial-gradient(circle at 90% 5%, rgba(94, 245, 206, 0.05), transparent 25rem),
    var(--navy-900);
}

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

.solution-row {
  display: grid;
  grid-template-columns: 54px 1fr 1.1fr;
  gap: 26px;
  align-items: center;
  min-height: 145px;
  border-bottom: 1px solid var(--line);
  transition: padding 0.3s ease, background 0.3s ease;
}

.solution-row:hover {
  padding-right: 18px;
  padding-left: 18px;
  background: rgba(94, 245, 206, 0.025);
}

.solution-index {
  color: #617792;
  font-family: "Manrope", sans-serif;
  font-size: 12px;
}

.solution-title {
  display: flex;
  align-items: center;
  gap: 20px;
}

.solution-icon {
  display: grid;
  flex: 0 0 auto;
  place-items: center;
  width: 46px;
  height: 46px;
  color: var(--mint);
  border: 1px solid rgba(94, 245, 206, 0.2);
  border-radius: 14px;
  background: rgba(94, 245, 206, 0.05);
  font-family: "Manrope", sans-serif;
  font-size: 20px;
}

.solution-title h3 {
  margin: 0;
  color: var(--white);
  font-size: 20px;
  line-height: 1.45;
}

.solution-row > p {
  margin: 0;
  color: var(--muted);
}

.architecture {
  overflow: hidden;
  background: #06101e;
}

.architecture::before {
  position: absolute;
  top: 25%;
  left: 50%;
  width: 650px;
  height: 650px;
  content: "";
  border-radius: 50%;
  background: rgba(94, 245, 206, 0.025);
  filter: blur(40px);
  transform: translateX(-50%);
}

.architecture-flow {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 40px 1fr 40px 1fr 40px 1fr;
  align-items: stretch;
}

.flow-card {
  position: relative;
  min-height: 300px;
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(10, 25, 45, 0.8);
}

.flow-card.ontology-card {
  border-color: rgba(94, 245, 206, 0.4);
  box-shadow: 0 18px 60px rgba(94, 245, 206, 0.05);
}

.flow-card.outcome-card {
  border-color: rgba(118, 168, 255, 0.34);
  background: rgba(15, 34, 60, 0.9);
}

.flow-kicker {
  color: #607997;
  font-family: "Manrope", sans-serif;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.flow-card h3 {
  margin: 35px 0 13px;
  color: var(--white);
  font-size: 19px;
}

.flow-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.flow-arrow {
  position: relative;
  z-index: 2;
  display: grid;
  place-items: center;
  color: var(--mint);
}

.flow-arrow::before {
  position: absolute;
  right: 0;
  left: 0;
  height: 1px;
  content: "";
  background: rgba(94, 245, 206, 0.25);
}

.flow-arrow span {
  position: relative;
  padding: 4px;
  background: #06101e;
}

.source-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 31px;
}

.source-pills span {
  padding: 6px 8px;
  color: #b6c6d8;
  border: 1px solid var(--line);
  border-radius: 7px;
  font-size: 10px;
}

.mini-network {
  position: relative;
  width: 105px;
  height: 70px;
  margin-top: 23px;
}

.mini-network::before,
.mini-network::after {
  position: absolute;
  height: 1px;
  content: "";
  background: rgba(94, 245, 206, 0.5);
  transform-origin: left;
}

.mini-network::before {
  top: 34px;
  left: 20px;
  width: 70px;
  transform: rotate(-18deg);
}

.mini-network::after {
  top: 18px;
  left: 37px;
  width: 54px;
  transform: rotate(37deg);
}

.mini-network i {
  position: absolute;
  width: 11px;
  height: 11px;
  border: 2px solid var(--mint);
  border-radius: 50%;
  background: var(--navy-900);
  box-shadow: 0 0 12px rgba(94, 245, 206, 0.24);
}

.mini-network i:nth-child(1) { top: 29px; left: 14px; }
.mini-network i:nth-child(2) { top: 8px; left: 40px; }
.mini-network i:nth-child(3) { top: 43px; left: 55px; }
.mini-network i:nth-child(4) { top: 17px; right: 5px; }
.mini-network i:nth-child(5) { bottom: 0; right: 0; }

.agent-chip {
  display: grid;
  place-items: center;
  width: 68px;
  height: 62px;
  margin-top: 26px;
  border: 1px solid rgba(94, 245, 206, 0.3);
  border-radius: 15px;
  background:
    linear-gradient(90deg, transparent 48%, rgba(94, 245, 206, 0.09) 50%, transparent 52%),
    linear-gradient(transparent 48%, rgba(94, 245, 206, 0.09) 50%, transparent 52%),
    rgba(94, 245, 206, 0.04);
  background-size: 12px 12px;
}

.agent-chip span {
  color: var(--mint);
  font-family: "Manrope", sans-serif;
  font-weight: 800;
}

.outcome-check {
  display: grid;
  place-items: center;
  width: 62px;
  height: 62px;
  margin-top: 26px;
  color: var(--navy-950);
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 10px rgba(94, 245, 206, 0.06);
  font-size: 28px;
  font-weight: 800;
}

.process {
  background: var(--navy-900);
}

.timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.week-card {
  position: relative;
  min-height: 310px;
  padding: 34px 28px;
  border-right: 1px solid var(--line);
  transition: background 0.3s ease;
}

.week-card:first-child {
  border-left: 1px solid var(--line);
}

.week-card::before {
  position: absolute;
  top: -4px;
  left: 28px;
  width: 7px;
  height: 7px;
  content: "";
  border: 2px solid var(--navy-900);
  border-radius: 50%;
  background: #526b88;
}

.week-card:hover,
.week-card.active {
  background: linear-gradient(180deg, rgba(94, 245, 206, 0.065), transparent);
}

.week-card.active::before {
  background: var(--mint);
  box-shadow: 0 0 0 5px rgba(94, 245, 206, 0.08);
}

.week-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.week-top span {
  color: var(--mint);
  font-family: "Manrope", sans-serif;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.week-top strong {
  padding: 4px 9px;
  color: #7f96af;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 10px;
}

.week-card h3 {
  margin: 63px 0 17px;
  color: var(--white);
  font-size: 22px;
}

.week-card p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.deliverables {
  background:
    radial-gradient(circle at 15% 50%, rgba(118, 168, 255, 0.055), transparent 30rem),
    #07111f;
}

.deliverables-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 100px;
  align-items: center;
}

.deliverables-copy > p {
  max-width: 490px;
  margin: 30px 0 0;
}

.use-cases {
  margin-top: 50px;
}

.use-cases > span {
  color: #6e86a0;
  font-size: 12px;
  font-weight: 700;
}

.use-cases > div {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.use-cases button {
  padding: 8px 11px;
  color: #9fb1c6;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: transparent;
  cursor: pointer;
  font-size: 11px;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.use-cases button:hover,
.use-cases button.active {
  color: var(--mint);
  border-color: rgba(94, 245, 206, 0.38);
  background: rgba(94, 245, 206, 0.05);
}

.use-cases > p {
  min-height: 54px;
  margin: 15px 0 0;
  color: #758da8;
  font-size: 13px;
}

.deliverables-panel {
  padding: 18px;
  border: 1px solid rgba(94, 245, 206, 0.18);
  border-radius: var(--radius-lg);
  background: rgba(10, 26, 47, 0.78);
  box-shadow: var(--shadow);
}

.panel-head {
  display: flex;
  justify-content: space-between;
  padding: 10px 12px 22px;
  color: #607994;
  font-family: "Manrope", sans-serif;
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.asset-list {
  margin: 0;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: #09182b;
  list-style: none;
  overflow: hidden;
}

.asset-list li {
  display: grid;
  grid-template-columns: 45px 1fr auto;
  gap: 15px;
  align-items: center;
  min-height: 72px;
  padding: 0 22px;
  border-bottom: 1px solid var(--line);
  transition: background 0.2s ease;
}

.asset-list li:last-child {
  border-bottom: 0;
}

.asset-list li:hover {
  background: rgba(94, 245, 206, 0.035);
}

.asset-list span {
  color: var(--mint);
  font-family: "Manrope", sans-serif;
  font-size: 10px;
}

.asset-list strong {
  color: #dbe7f4;
  font-size: 14px;
}

.asset-list small {
  color: #5d7692;
  font-family: "Manrope", sans-serif;
  font-size: 9px;
  text-transform: uppercase;
}

.diagnosis {
  padding-bottom: 100px;
  background: var(--navy-950);
}

.diagnosis-shell {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 90px;
  padding: 74px;
  border: 1px solid rgba(94, 245, 206, 0.22);
  border-radius: 38px;
  background:
    radial-gradient(circle at 5% 10%, rgba(94, 245, 206, 0.075), transparent 24rem),
    #09192d;
  box-shadow: var(--shadow);
}

.diagnosis-copy > p {
  margin: 28px 0 0;
}

.diagnosis-form {
  display: grid;
  gap: 18px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgba(5, 14, 27, 0.62);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
}

.diagnosis-form label:not(.consent) {
  display: grid;
  gap: 8px;
}

.diagnosis-form label > span {
  color: #a9b9cb;
  font-size: 12px;
  font-weight: 600;
}

.diagnosis-form input,
.diagnosis-form textarea,
.diagnosis-form select {
  width: 100%;
  color: var(--white);
  border: 1px solid var(--line);
  border-radius: 11px;
  outline: none;
  background: #0b1c31;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.diagnosis-form input,
.diagnosis-form select {
  height: 49px;
  padding: 0 14px;
}

.diagnosis-form textarea {
  min-height: 110px;
  padding: 13px 14px;
  resize: vertical;
}

.diagnosis-form input::placeholder,
.diagnosis-form textarea::placeholder {
  color: #536b87;
}

.diagnosis-form input:focus,
.diagnosis-form textarea:focus,
.diagnosis-form select:focus {
  border-color: rgba(94, 245, 206, 0.65);
  box-shadow: 0 0 0 3px rgba(94, 245, 206, 0.07);
}

.diagnosis-form .invalid {
  border-color: #ff7d8a;
}

.consent {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  cursor: pointer;
}

.consent input {
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
  margin-top: 4px;
  accent-color: var(--mint);
}

.consent span {
  font-weight: 400 !important;
}

.form-submit {
  width: 100%;
  margin-top: 2px;
  border: 0;
}

.form-note {
  margin: -7px 0 0;
  color: #657d98;
  font-size: 11px;
  text-align: center;
}

.form-message {
  display: none;
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 12px;
}

.form-message.show {
  display: block;
}

.form-message.success {
  color: var(--mint-soft);
  border: 1px solid rgba(94, 245, 206, 0.22);
  background: rgba(94, 245, 206, 0.06);
}

.form-message.error {
  color: #ffb2ba;
  border: 1px solid rgba(255, 125, 138, 0.25);
  background: rgba(255, 125, 138, 0.06);
}

.site-footer {
  padding: 70px 0 30px;
  border-top: 1px solid var(--line);
  background: #040b15;
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: 40px;
  align-items: center;
  padding-bottom: 55px;
}

.footer-top p {
  margin: 0;
  color: #6e849d;
  font-size: 13px;
}

.footer-top > a:last-child {
  color: var(--mint);
  font-size: 13px;
  font-weight: 700;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  padding-top: 24px;
  color: #455b73;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  font-family: "Manrope", "Noto Sans KR", sans-serif;
  font-size: 10px;
  letter-spacing: 0.06em;
}

.back-to-top {
  position: fixed;
  z-index: 80;
  right: 25px;
  bottom: 25px;
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  color: var(--mint);
  border: 1px solid rgba(94, 245, 206, 0.25);
  border-radius: 50%;
  background: rgba(7, 20, 38, 0.82);
  opacity: 0;
  cursor: pointer;
  pointer-events: none;
  transform: translateY(10px);
  backdrop-filter: blur(10px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.72s ease, transform 0.72s ease;
}

[data-reveal].revealed {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1100px) {
  .hero {
    min-height: auto;
    padding-top: 160px;
  }

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

  .hero-copy {
    max-width: 800px;
  }

  .hero-visual {
    width: min(680px, 100%);
    margin: 40px auto 0;
  }

  .architecture-flow {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }

  .architecture-flow .flow-arrow {
    display: none;
  }

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

  .week-card:nth-child(3) {
    border-left: 1px solid var(--line);
  }

  .deliverables-grid,
  .diagnosis-shell {
    gap: 55px;
  }
}

@media (max-width: 860px) {
  .container {
    width: min(100% - 32px, 680px);
  }

  .section {
    padding: 100px 0;
  }

  .header-inner {
    min-height: 70px;
  }

  .menu-toggle {
    position: relative;
    z-index: 102;
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    padding: 0;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.025);
  }

  .menu-toggle > span:not(.sr-only) {
    position: absolute;
    width: 18px;
    height: 1px;
    background: var(--white);
    transition: transform 0.25s ease;
  }

  .menu-toggle > span:nth-child(2) {
    transform: translateY(-4px);
  }

  .menu-toggle > span:nth-child(3) {
    transform: translateY(4px);
  }

  .menu-toggle[aria-expanded="true"] > span:nth-child(2) {
    transform: rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] > span:nth-child(3) {
    transform: rotate(-45deg);
  }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 101;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 24px;
    padding: 30px;
    background: rgba(5, 13, 25, 0.98);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: opacity 0.25s ease, transform 0.25s ease;
  }

  .site-nav.open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
  }

  .site-nav a {
    font-size: 28px;
  }

  .site-nav .nav-cta {
    margin-top: 12px;
    font-size: 18px;
  }

  .hero {
    min-height: auto;
    padding-top: 135px;
  }

  .hero h1 {
    font-size: clamp(40px, 10vw, 58px);
  }

  .hero-proof {
    gap: 27px;
  }

  .split-heading {
    grid-template-columns: 1fr;
    gap: 25px;
  }

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

  .problem-card {
    min-height: 270px;
  }

  .solution-row {
    grid-template-columns: 40px 1fr;
    gap: 15px;
    padding: 26px 0;
  }

  .solution-row:hover {
    padding: 26px 12px;
  }

  .solution-row > p {
    grid-column: 2;
  }

  .architecture-flow {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .architecture-flow .flow-card {
    min-height: 265px;
    margin-top: 0 !important;
  }

  .flow-arrow {
    display: grid !important;
    min-height: 48px;
    transform: rotate(90deg);
  }

  .deliverables-grid,
  .diagnosis-shell {
    grid-template-columns: 1fr;
  }

  .diagnosis-shell {
    padding: 48px;
  }

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

@media (max-width: 580px) {
  body {
    font-size: 15px;
  }

  .container {
    width: min(100% - 24px, 500px);
  }

  .section {
    padding: 82px 0;
  }

  .hero {
    padding-top: 120px;
  }

  .hero h1 {
    font-size: 38px;
    line-height: 1.28;
  }

  .hero-description {
    font-size: 16px;
  }

  .hero-actions {
    display: grid;
  }

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

  .hero-proof {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    margin-top: 42px;
  }

  .hero-proof div {
    min-width: 0;
    padding: 0 9px;
  }

  .hero-proof div:first-child {
    padding-left: 0;
  }

  .hero-proof div + div::before {
    left: 0;
  }

  .hero-proof strong {
    font-size: 17px;
  }

  .hero-proof span {
    font-size: 10px;
  }

  .hero-visual {
    margin-top: 20px;
    padding: 18px 10px 12px;
    border-radius: 22px;
  }

  .visual-caption {
    font-size: 9px;
  }

  .section-heading {
    margin-bottom: 45px;
  }

  .section-heading h2,
  .deliverables-copy h2,
  .diagnosis-copy h2 {
    font-size: 33px;
  }

  .section-heading > p:not(.eyebrow),
  .split-heading > p,
  .deliverables-copy > p,
  .diagnosis-copy > p {
    font-size: 15px;
  }

  .problem-card {
    min-height: 250px;
    padding: 30px 26px;
  }

  .line-icon {
    margin-bottom: 35px;
  }

  .solution-row {
    grid-template-columns: 28px 1fr;
  }

  .solution-title {
    gap: 13px;
  }

  .solution-icon {
    width: 40px;
    height: 40px;
  }

  .solution-title h3 {
    font-size: 18px;
  }

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

  .week-card,
  .week-card:nth-child(3) {
    min-height: 285px;
    border-left: 1px solid var(--line);
  }

  .asset-list li {
    grid-template-columns: 33px 1fr;
    padding: 0 15px;
  }

  .asset-list small {
    display: none;
  }

  .deliverables-grid {
    gap: 55px;
  }

  .diagnosis {
    padding-right: 0;
    padding-left: 0;
  }

  .diagnosis-shell {
    gap: 45px;
    width: 100%;
    padding: 48px 20px;
    border-right: 0;
    border-left: 0;
    border-radius: 0;
  }

  .diagnosis-form {
    padding: 24px 17px;
  }

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

  .footer-bottom {
    display: grid;
    gap: 8px;
  }
}

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

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

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}