:root {
  --ink: #edf4ff;
  --muted: #9baac3;
  --navy: #06101f;
  --navy-2: #09172a;
  --blue: #4f7fff;
  --cyan: #53d7ff;
  --violet: #a66cff;
  --line: rgba(158, 186, 231, 0.16);
  --font-jp: "Noto Sans JP", sans-serif;
  --font-en: "DM Sans", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  overflow-x: hidden;
  color: var(--ink);
  background: var(--navy);
  font-family: var(--font-jp);
}

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

.noise {
  position: fixed;
  inset: 0;
  z-index: 20;
  pointer-events: none;
  opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 180 180' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='.8'/%3E%3C/svg%3E");
}

.site-header {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 10;
  display: flex;
  width: 100%;
  align-items: center;
  justify-content: space-between;
  padding: 28px clamp(24px, 5vw, 76px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.brand > span:last-child > span {
  margin-left: 3px;
  color: var(--cyan);
  font-size: 15px;
}

.brand-mark {
  position: relative;
  display: flex;
  width: 34px;
  height: 34px;
  align-items: center;
  justify-content: center;
  gap: 3px;
  border: 1px solid rgba(83, 215, 255, 0.5);
  border-radius: 50%;
}

.brand-mark i {
  display: block;
  width: 3px;
  border-radius: 10px;
  background: var(--cyan);
  box-shadow: 0 0 10px rgba(83, 215, 255, 0.8);
}

.brand-mark i:nth-child(1) { height: 8px; }
.brand-mark i:nth-child(2) { height: 17px; }
.brand-mark i:nth-child(3) { height: 11px; }

nav {
  display: flex;
  align-items: center;
  gap: clamp(22px, 3vw, 48px);
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
}

nav a {
  transition: color 180ms ease;
}

nav a:hover {
  color: var(--cyan);
}

.nav-cta {
  padding: 11px 17px;
  border: 1px solid rgba(255,255,255,0.35);
  border-radius: 50px;
}

.nav-cta span {
  margin-left: 8px;
  color: var(--cyan);
}

.hero {
  position: relative;
  display: grid;
  min-height: 100vh;
  grid-template-columns: minmax(420px, 0.9fr) minmax(520px, 1.1fr);
  align-items: center;
  overflow: hidden;
  padding: 130px clamp(24px, 7vw, 108px) 80px;
  background:
    linear-gradient(90deg, rgba(6,16,31,1) 0%, rgba(6,16,31,0.94) 39%, rgba(6,16,31,0.1) 72%),
    radial-gradient(circle at 75% 40%, rgba(95,75,218,0.22), transparent 38%);
}

.hero::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 180px;
  background: linear-gradient(transparent, var(--navy));
  content: "";
}

.hero-copy {
  position: relative;
  z-index: 3;
  padding-bottom: 4vh;
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 24px;
  color: var(--cyan);
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
}

.eyebrow span {
  display: inline-block;
  width: 30px;
  height: 1px;
  background: currentColor;
}

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

h1 {
  margin-bottom: 28px;
  font-size: clamp(54px, 6.2vw, 96px);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -0.065em;
}

h1 em,
.team h2 em {
  color: transparent;
  background: linear-gradient(110deg, var(--cyan), #7b8dff 55%, var(--violet));
  background-clip: text;
  font-style: normal;
}

.hero-lead {
  max-width: 590px;
  margin-bottom: 36px;
  color: #acbad0;
  font-size: 15px;
  line-height: 2;
}

.primary-button {
  display: inline-flex;
  width: 190px;
  height: 56px;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  border: 1px solid rgba(83, 215, 255, 0.45);
  border-radius: 4px;
  background: rgba(20, 46, 78, 0.52);
  font-size: 13px;
  font-weight: 700;
  transition: transform 180ms ease, background 180ms ease;
}

.primary-button:hover {
  transform: translateY(-2px);
  background: rgba(36, 71, 115, 0.66);
}

.primary-button span {
  color: var(--cyan);
  font-size: 18px;
}

.hero-visual {
  position: absolute;
  top: 0;
  right: 0;
  width: 68vw;
  height: 100%;
}

.visual-frame {
  position: absolute;
  inset: 0;
}

.visual-frame::after {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, var(--navy) 0%, transparent 32%),
    linear-gradient(0deg, var(--navy) 0%, transparent 28%);
  content: "";
}

.visual-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.88;
}

.signal-card,
.analysis-tag {
  position: absolute;
  z-index: 2;
  border: 1px solid rgba(139, 194, 255, 0.25);
  background: rgba(6, 16, 31, 0.72);
  box-shadow: 0 18px 60px rgba(0,0,0,0.35);
  backdrop-filter: blur(14px);
}

.signal-card {
  display: grid;
  width: 145px;
  grid-template-columns: auto 1fr;
  gap: 3px 12px;
  padding: 13px 16px;
  border-radius: 7px;
}

.signal-card span {
  grid-row: 1 / 3;
  align-self: center;
  color: var(--cyan);
  font-family: var(--font-en);
  font-size: 11px;
}

.signal-card strong {
  font-size: 12px;
}

.signal-card i {
  display: block;
  width: 100%;
  height: 8px;
  background: url("data:image/svg+xml,%3Csvg width='90' height='8' viewBox='0 0 90 8' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0 4h18l3-3 4 6 4-6 4 6 4-3h53' fill='none' stroke='%2353d7ff' stroke-width='1'/%3E%3C/svg%3E") center/cover;
}

.signal-card-a { top: 27%; right: 7%; }
.signal-card-b { top: 44%; left: 41%; }

.analysis-tag {
  right: 11%;
  bottom: 18%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 15px;
  border-radius: 50px;
  color: #d5dfff;
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: 0.17em;
}

.pulse {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--violet);
  box-shadow: 0 0 0 5px rgba(166,108,255,0.13), 0 0 18px var(--violet);
  animation: pulse 1.8s infinite;
}

.scroll-cue {
  position: absolute;
  bottom: 36px;
  left: clamp(24px, 4vw, 70px);
  z-index: 4;
  display: flex;
  align-items: center;
  gap: 12px;
  color: #657590;
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: 0.25em;
  transform: rotate(90deg);
  transform-origin: left center;
}

.scroll-cue i {
  display: block;
  width: 55px;
  height: 1px;
  background: #657590;
}

.section {
  position: relative;
  padding: 130px clamp(24px, 7vw, 108px);
}

.section-heading h2,
.system-intro h2,
.team h2 {
  margin: 0;
  font-size: clamp(38px, 4.6vw, 68px);
  line-height: 1.3;
  letter-spacing: -0.055em;
}

.concept {
  background:
    radial-gradient(circle at 12% 45%, rgba(45,96,184,0.14), transparent 28%),
    var(--navy);
}

.concept-grid {
  display: grid;
  grid-template-columns: 1fr 0.85fr;
  gap: 10vw;
  align-items: end;
  margin-top: 75px;
  padding-left: 26%;
}

.concept-lead {
  color: #acbad0;
  font-size: 16px;
  line-height: 2.2;
}

.concept-note {
  position: relative;
  padding: 26px 30px;
  border-top: 1px solid rgba(83, 215, 255, 0.5);
  background: linear-gradient(110deg, rgba(24,53,88,0.55), transparent);
}

.concept-note span {
  color: var(--cyan);
  font-family: var(--font-en);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.2em;
}

.concept-note p {
  margin: 10px 0 0;
  font-weight: 600;
  line-height: 1.8;
}

.experience {
  background: #091426;
}

.centered {
  text-align: center;
}

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

.flow-grid {
  display: grid;
  max-width: 1380px;
  margin: 80px auto 0;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.flow-card {
  position: relative;
  min-height: 310px;
  padding: 34px;
  overflow: hidden;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  transition: background 250ms ease, transform 250ms ease;
}

.flow-card:hover {
  z-index: 2;
  background: rgba(47, 84, 139, 0.15);
  transform: translateY(-5px);
}

.flow-card.accent {
  background: linear-gradient(145deg, rgba(93,67,183,0.24), rgba(14,28,51,0.2));
}

.step-number {
  color: #60728f;
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
}

.flow-icon {
  display: flex;
  width: 72px;
  height: 72px;
  align-items: center;
  justify-content: center;
  margin: 35px 0 25px;
  border: 1px solid rgba(83,215,255,0.28);
  border-radius: 50%;
  color: var(--cyan);
  font-family: var(--font-en);
  font-size: 26px;
  text-shadow: 0 0 20px currentColor;
}

.accent .flow-icon {
  border-color: rgba(166,108,255,0.45);
  color: var(--violet);
}

.flow-card h3 {
  margin-bottom: 13px;
  font-size: 18px;
}

.flow-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.9;
}

.system {
  overflow: hidden;
  background:
    radial-gradient(circle at 70% 45%, rgba(102,73,201,0.16), transparent 35%),
    var(--navy);
}

.system-intro {
  display: grid;
  grid-template-columns: 0.6fr 1.1fr 0.7fr;
  gap: 5vw;
  align-items: end;
}

.system-intro .eyebrow {
  align-self: start;
}

.system-intro > p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 2;
}

.system-diagram {
  display: flex;
  max-width: 1400px;
  align-items: center;
  justify-content: center;
  margin: 100px auto 70px;
}

.system-node {
  position: relative;
  display: flex;
  min-width: 220px;
  min-height: 165px;
  align-items: center;
  gap: 20px;
  padding: 26px;
  border: 1px solid rgba(91,132,195,0.28);
  background: rgba(11,29,54,0.72);
}

.system-node::after {
  position: absolute;
  inset: 7px;
  border: 1px solid rgba(255,255,255,0.03);
  content: "";
  pointer-events: none;
}

.persona-node {
  border-color: rgba(166,108,255,0.45);
  background: rgba(67,42,128,0.2);
}

.node-index {
  position: absolute;
  top: 13px;
  left: 15px;
  color: #6e819e;
  font-family: var(--font-en);
  font-size: 9px;
}

.node-icon {
  color: var(--cyan);
  font-family: var(--font-en);
  font-size: 30px;
}

.persona-node .node-icon {
  color: var(--violet);
}

.system-node small {
  color: #6f829e;
  font-family: var(--font-en);
  font-size: 8px;
  letter-spacing: 0.14em;
}

.system-node h3 {
  margin: 5px 0 0;
  font-size: 14px;
}

.connector {
  position: relative;
  width: 70px;
  flex: 0 0 70px;
  text-align: center;
}

.connector i {
  display: block;
  height: 1px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}

.connector i::after {
  position: absolute;
  top: -3px;
  right: 0;
  width: 7px;
  height: 7px;
  border-top: 1px solid var(--cyan);
  border-right: 1px solid var(--cyan);
  content: "";
  transform: rotate(45deg);
}

.connector span {
  position: absolute;
  top: 12px;
  left: 0;
  width: 100%;
  color: #657896;
  font-family: var(--font-en);
  font-size: 8px;
  letter-spacing: 0.12em;
}

.metrics {
  display: flex;
  max-width: 900px;
  justify-content: space-between;
  margin: 0 auto;
  padding-top: 45px;
  border-top: 1px solid var(--line);
}

.metrics div {
  display: flex;
  align-items: baseline;
  gap: 15px;
}

.metrics strong {
  color: var(--cyan);
  font-family: var(--font-en);
  font-size: 42px;
  font-weight: 400;
}

.metrics span {
  color: #71819b;
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: 0.2em;
}

.team {
  background: #0a1628;
}

.team-card {
  display: grid;
  max-width: 1220px;
  margin: 0 auto;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 12vw;
  padding: 80px;
  border: 1px solid rgba(117,147,196,0.23);
  background:
    linear-gradient(135deg, rgba(20,49,83,0.75), rgba(30,25,72,0.42)),
    var(--navy);
}

.team h2 {
  font-family: var(--font-en), var(--font-jp);
  font-size: clamp(55px, 7vw, 100px);
  line-height: 0.9;
}

.team h2 em {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-jp);
  font-size: 0.52em;
  letter-spacing: 0;
}

.team-copy {
  align-self: end;
}

.team-copy p:first-child {
  margin-bottom: 20px;
  font-size: 21px;
  font-weight: 700;
}

.team-copy p:nth-child(2) {
  color: var(--muted);
  font-size: 14px;
  line-height: 2;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 32px;
}

.tags span {
  padding: 7px 12px;
  border: 1px solid rgba(83,215,255,0.22);
  border-radius: 40px;
  color: #8db4d5;
  font-family: var(--font-en);
  font-size: 10px;
}

.member-heading {
  display: flex;
  max-width: 1220px;
  align-items: center;
  justify-content: space-between;
  margin: 85px auto 26px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.member-heading p {
  margin: 0;
  color: var(--cyan);
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.member-heading span {
  color: #70819c;
  font-size: 11px;
}

.member-grid {
  display: grid;
  max-width: 1220px;
  margin: 0 auto;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--line);
  border-left: 1px solid var(--line);
}

.member-card {
  position: relative;
  display: flex;
  min-height: 445px;
  flex-direction: column;
  padding: 28px;
  overflow: hidden;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: rgba(7, 20, 38, 0.46);
  transition: background 240ms ease, transform 240ms ease;
}

.member-card::before {
  position: absolute;
  top: -70px;
  left: -70px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(72, 122, 230, 0.1);
  filter: blur(35px);
  content: "";
  transition: background 240ms ease;
}

.member-card:nth-child(even)::before {
  background: rgba(157, 88, 233, 0.1);
}

.member-card:hover {
  z-index: 2;
  background: rgba(26, 52, 87, 0.68);
  transform: translateY(-7px);
}

.member-card:hover::before {
  background: rgba(83, 215, 255, 0.19);
}

.member-top {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 33px;
}

.member-avatar {
  display: grid;
  width: 56px;
  height: 56px;
  place-items: center;
  border: 1px solid rgba(83, 215, 255, 0.38);
  border-radius: 50%;
  color: var(--cyan);
  background: rgba(16, 45, 76, 0.78);
  font-family: var(--font-en);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  box-shadow: inset 0 0 24px rgba(83, 215, 255, 0.08);
}

.member-card:nth-child(even) .member-avatar {
  border-color: rgba(166, 108, 255, 0.42);
  color: #c398ff;
  box-shadow: inset 0 0 24px rgba(166, 108, 255, 0.1);
}

.member-number {
  color: #52637e;
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: 0.16em;
}

.member-role {
  margin-bottom: 7px;
  color: #6d83a3;
  font-family: var(--font-en);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.18em;
}

.member-card h3 {
  margin-bottom: 12px;
  font-size: 26px;
  letter-spacing: -0.05em;
}

.member-title {
  margin-bottom: 23px;
  color: var(--cyan);
  font-size: 13px;
  font-weight: 700;
}

.member-card:nth-child(even) .member-title {
  color: #c398ff;
}

.member-bio {
  margin-bottom: 28px;
  color: #93a4bf;
  font-size: 12px;
  line-height: 1.95;
}

.member-skill {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(143, 172, 218, 0.12);
  color: #576a87;
  font-family: var(--font-en);
  font-size: 8px;
  letter-spacing: 0.12em;
}

footer {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  padding: 44px clamp(24px, 5vw, 76px);
  border-top: 1px solid var(--line);
  background: #050d19;
}

footer p {
  margin: 0;
  color: #53637c;
  font-family: var(--font-en);
  font-size: 9px;
  letter-spacing: 0.22em;
}

footer small {
  justify-self: end;
  color: #45546b;
  font-family: var(--font-en);
  font-size: 9px;
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(0.8); }
}

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-visual {
    width: 72vw;
    opacity: 0.65;
  }

  .hero-copy {
    max-width: 620px;
  }

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

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

  .system-intro .eyebrow {
    grid-column: 1 / -1;
  }

  .system-diagram {
    display: grid;
    grid-template-columns: 1fr 40px 1fr;
    gap: 18px 0;
  }

  .system-node {
    min-width: 0;
  }

  .connector {
    width: 40px;
    flex-basis: 40px;
  }

  .system-diagram .system-node:nth-of-type(5) {
    grid-column: 1;
  }

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

@media (max-width: 760px) {
  .site-header {
    padding: 20px;
  }

  nav a:not(.nav-cta) {
    display: none;
  }

  .hero {
    min-height: 820px;
    padding: 125px 22px 70px;
    align-items: end;
  }

  .hero-visual {
    top: 30px;
    width: 100%;
    height: 62%;
    opacity: 0.72;
  }

  .visual-frame::after {
    background: linear-gradient(0deg, var(--navy) 4%, transparent 55%);
  }

  .hero-copy {
    padding-bottom: 0;
  }

  h1 {
    font-size: clamp(48px, 14vw, 70px);
  }

  .hero-lead {
    font-size: 13px;
  }

  .signal-card {
    display: none;
  }

  .analysis-tag {
    right: 20px;
    bottom: 41%;
  }

  .scroll-cue {
    display: none;
  }

  .section {
    padding: 90px 22px;
  }

  .section-heading h2,
  .system-intro h2 {
    font-size: 36px;
  }

  .concept-grid {
    grid-template-columns: 1fr;
    gap: 35px;
    margin-top: 45px;
    padding-left: 0;
  }

  .flow-grid {
    grid-template-columns: 1fr;
    margin-top: 50px;
  }

  .flow-card {
    min-height: 260px;
  }

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

  .system-intro .eyebrow {
    grid-column: auto;
  }

  .system-diagram {
    display: flex;
    flex-direction: column;
    margin-top: 60px;
  }

  .system-node {
    width: 100%;
  }

  .connector {
    width: 1px;
    height: 44px;
    flex-basis: 44px;
  }

  .connector i {
    width: 1px;
    height: 44px;
    background: linear-gradient(var(--blue), var(--cyan));
  }

  .connector i::after {
    top: auto;
    right: -3px;
    bottom: 0;
    transform: rotate(135deg);
  }

  .connector span {
    top: 15px;
    left: 12px;
    width: auto;
  }

  .metrics {
    gap: 25px;
  }

  .metrics div {
    display: block;
  }

  .metrics strong,
  .metrics span {
    display: block;
  }

  .metrics strong {
    font-size: 32px;
  }

  .team-card {
    grid-template-columns: 1fr;
    gap: 65px;
    padding: 42px 28px;
  }

  .member-heading {
    align-items: flex-start;
    margin-top: 60px;
  }

  .member-heading span {
    display: none;
  }

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

  .member-card {
    min-height: 380px;
  }

  footer {
    grid-template-columns: 1fr auto;
  }

  footer p {
    display: none;
  }
}

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

  .pulse {
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}