:root {
  --ink: #0a2118;
  --deep: #081c14;
  --paper: #f7f7f2;
  --warm: #eeeee7;
  --lime: #c8f560;
  --line: #cfd5cd;
  --muted: #5e6d65;
}
* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  background: var(--deep);
  color: var(--ink);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}
.progress {
  position: fixed;
  z-index: 20;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
}
.progress span {
  display: block;
  width: 0;
  height: 100%;
  background: var(--lime);
}
.site-shell {
  width: 100%;
  margin: 0;
  background: var(--paper);
  overflow: hidden;
}
.header {
  height: 96px;
  padding: 0 56px;
  display: flex;
  align-items: center;
  border-bottom: 1px solid #dde1db;
  position: relative;
  z-index: 10;
}
.brand {
  display: flex;
  align-items: baseline;
  gap: 5px;
  color: var(--ink);
  font-size: 28px;
  font-weight: 800;
  text-decoration: none;
  letter-spacing: -2px;
}
.brand i {
  width: 7px;
  height: 7px;
  background: var(--lime);
  border-radius: 50%;
}
.brand span {
  margin-left: 8px;
  font-size: 10px;
  letter-spacing: 1.8px;
  font-weight: 700;
}
.header nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 34px;
}
.header nav a {
  font-size: 13px;
  color: var(--ink);
  font-weight: 650;
  text-decoration: none;
}
.header nav a:hover {
  text-decoration: underline;
  text-decoration-color: var(--lime);
  text-decoration-thickness: 5px;
  text-underline-offset: -2px;
}
.menu {
  display: none;
}
.hero {
  min-height: 720px;
  padding: 96px 56px;
  display: grid;
  grid-template-columns: 1.04fr 0.96fr;
  gap: 72px;
  align-items: center;
}
.overline,
.section-title p,
.roles-head > p,
.practice-intro > p,
.voyage-heading p,
.roadmap-copy > p,
.method > div > p,
.quotes > p,
.transcript-head p:first-child,
.closing > p {
  font-size: 11px;
  letter-spacing: 2px;
  font-weight: 800;
  text-transform: uppercase;
}
.hero h1 {
  font-size: clamp(58px, 6vw, 96px);
  line-height: 0.96;
  letter-spacing: -6px;
  margin: 36px 0 34px;
  font-weight: 500;
}
.hero mark,
.roles mark,
.method mark,
.closing mark {
  background: linear-gradient(transparent 63%, var(--lime) 0);
  color: inherit;
  padding: 0 0.04em;
}
.lede {
  max-width: 650px;
  font-size: 18px;
  line-height: 1.7;
  color: #33463d;
}
.hero-actions {
  margin-top: 40px;
  display: flex;
  align-items: center;
  gap: 26px;
}
.button {
  display: inline-flex;
  justify-content: space-between;
  align-items: center;
  min-width: 205px;
  padding: 18px 20px;
  background: var(--ink);
  color: white;
  border-bottom: 4px solid var(--lime);
  text-decoration: none;
  font-size: 13px;
  font-weight: 750;
}
.button b {
  font-size: 18px;
}
.button.lime {
  background: var(--lime);
  color: var(--ink);
  border-bottom-color: white;
}
.text-link {
  color: var(--ink);
  font-size: 13px;
  font-weight: 750;
}
.hero-visual {
  height: 570px;
  background: var(--deep);
  color: white;
  padding: 26px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}
.hero-visual:before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(200, 245, 96, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 245, 96, 0.08) 1px, transparent 1px);
  background-size: 52px 52px;
}
.visual-head,
.visual-stats {
  position: relative;
  display: flex;
  justify-content: space-between;
  font-size: 10px;
  letter-spacing: 1.3px;
}
.agent-orbit {
  position: relative;
  flex: 1;
  display: grid;
  place-items: center;
}
.agent-orbit strong {
  width: 190px;
  height: 190px;
  border-radius: 50%;
  background: var(--lime);
  color: var(--ink);
  display: grid;
  place-items: center;
  font-size: 28px;
  letter-spacing: -1px;
  z-index: 2;
}
.orbit {
  position: absolute;
  border: 1px solid rgba(200, 245, 96, 0.35);
  border-radius: 50%;
}
.orbit-a {
  width: 330px;
  height: 330px;
}
.orbit-b {
  width: 465px;
  height: 465px;
}
.node {
  position: absolute;
  background: white;
  color: var(--ink);
  padding: 10px 13px;
  font-size: 10px;
  font-style: normal;
  font-weight: 800;
  z-index: 3;
}
.n1 {
  top: 12%;
  left: 17%;
}
.n2 {
  top: 25%;
  right: 10%;
}
.n3 {
  bottom: 20%;
  left: 8%;
}
.n4 {
  bottom: 10%;
  right: 19%;
}
.visual-stats {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: 20px;
}
.visual-stats div {
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.visual-stats b {
  font-size: 26px;
  color: var(--lime);
}
.visual-stats span {
  color: #aebbb4;
}
.thesis {
  background: var(--warm);
  padding: 104px 56px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 100px;
}
.section-title h2,
.roles h2,
.practice h2,
.voyages h2,
.roadmap h2,
.method h2,
.transcript h2,
.closing h2 {
  font-size: clamp(40px, 4.5vw, 68px);
  line-height: 1.06;
  letter-spacing: -3.5px;
  font-weight: 500;
  margin: 28px 0;
}
.signal-list {
  align-self: center;
}
.signal-list details {
  border-top: 1px solid #bfc7be;
  padding: 0;
}
.signal-list details:last-child {
  border-bottom: 1px solid #bfc7be;
}
.signal-list summary {
  list-style: none;
  display: grid;
  grid-template-columns: 42px 1fr 22px;
  align-items: center;
  min-height: 72px;
  cursor: pointer;
}
.signal-list summary::-webkit-details-marker {
  display: none;
}
.signal-list summary span {
  font-size: 11px;
}
.signal-list summary strong {
  font-size: 18px;
}
.signal-list summary i {
  font-style: normal;
  font-size: 22px;
  transition: 0.2s;
}
.signal-list details[open] summary i {
  transform: rotate(45deg);
}
.signal-list details p {
  margin: 0 42px 24px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}
.roles {
  background: var(--deep);
  color: white;
  padding: 112px 56px;
}
.roles-head {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  column-gap: 100px;
}
.roles-head > p:first-child {
  grid-column: 1/-1;
  color: var(--lime);
}
.roles-head > p:last-child {
  align-self: end;
  font-size: 16px;
  line-height: 1.7;
  color: #b9c4bf;
}
.role-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 70px;
  border-top: 1px solid #365044;
  border-left: 1px solid #365044;
}
.role-grid article {
  padding: 32px;
  min-height: 300px;
  border-right: 1px solid #365044;
  border-bottom: 1px solid #365044;
  display: flex;
  flex-direction: column;
}
.role-grid span {
  color: var(--lime);
  font-size: 11px;
}
.role-grid h3 {
  font-size: 44px;
  margin: 60px 0 6px;
  letter-spacing: -2px;
}
.role-grid b {
  font-size: 14px;
  color: var(--lime);
}
.role-grid p {
  margin-top: auto;
  color: #acbbb3;
  line-height: 1.65;
}
.practice {
  padding: 108px 56px;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 80px;
}
.practice-intro > p:last-of-type {
  font-size: 16px;
  line-height: 1.8;
  color: var(--muted);
  max-width: 560px;
}
.practice-intro .button {
  margin-top: 24px;
}
.system-map {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border: 1px solid var(--ink);
  position: relative;
}
.system-map:before {
  content: "";
  position: absolute;
  inset: 50% 0 auto;
  border-top: 1px solid var(--ink);
}
.system-map:after {
  content: "";
  position: absolute;
  inset: 0 auto 0 50%;
  border-left: 1px solid var(--ink);
}
.system-map article {
  padding: 28px;
  min-height: 190px;
  position: relative;
}
.system-map article span {
  font-size: 11px;
}
.system-map article h3 {
  font-size: 25px;
  margin: 55px 0 8px;
}
.system-map article p {
  font-size: 13px;
  margin: 0;
  color: var(--muted);
}
.map-core {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  z-index: 2;
  width: 142px;
  height: 142px;
  border-radius: 50%;
  background: var(--lime);
  display: grid;
  place-content: center;
  text-align: center;
}
.map-core span {
  font-size: 10px;
  letter-spacing: 2px;
}
.map-core strong {
  font-size: 20px;
}
.voyages {
  padding: 108px 56px;
  background: var(--warm);
}
.voyage-heading {
  display: flex;
  justify-content: space-between;
  align-items: end;
}
.voyage-heading > span {
  font-size: 120px;
  line-height: 0.8;
  color: #d1d7cd;
  font-weight: 800;
}
.voyage-grid {
  margin-top: 68px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}
.voyage-grid article {
  position: relative;
  min-height: 300px;
  padding: 24px;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
  display: flex;
  flex-direction: column;
}
.voyage-grid article > span,
.voyage-grid article > p {
  font-size: 10px;
  letter-spacing: 1px;
}
.voyage-grid article > p {
  color: var(--muted);
}
.voyage-grid h3 {
  font-size: 27px;
  letter-spacing: -1px;
  margin: auto 0 14px;
}
.voyage-grid article div {
  font-size: 13px;
  line-height: 1.5;
  max-width: 85%;
}
.voyage-grid a {
  position: absolute;
  right: 22px;
  bottom: 22px;
  color: var(--ink);
  font-size: 24px;
  text-decoration: none;
}
.voyage-grid article:hover {
  background: var(--lime);
}
.roadmap {
  padding: 110px 56px;
  display: grid;
  grid-template-columns: 0.82fr 1.18fr;
  gap: 90px;
}
.roadmap-copy {
  position: sticky;
  top: 30px;
  align-self: start;
}
.roadmap-copy > p:nth-of-type(2) {
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}
.roadmap blockquote {
  font-size: 26px;
  line-height: 1.25;
  margin: 55px 0 0;
  border-left: 7px solid var(--lime);
  padding-left: 20px;
}
.roadmap ol {
  list-style: none;
  padding: 0;
  margin: 0;
}
.roadmap li {
  display: grid;
  grid-template-columns: 50px 1fr;
  gap: 12px;
  border-top: 1px solid var(--line);
  padding: 23px 0;
}
.roadmap li:last-child {
  border-bottom: 1px solid var(--line);
}
.roadmap li > span {
  font-size: 11px;
}
.roadmap li h3 {
  font-size: 22px;
  margin: 0 0 8px;
}
.roadmap li p {
  font-size: 14px;
  line-height: 1.65;
  color: var(--muted);
  margin: 0;
}
.method {
  background: var(--lime);
  padding: 105px 56px;
}
.method-steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 65px;
  border-top: 1px solid var(--ink);
  border-left: 1px solid var(--ink);
}
.method-steps article {
  padding: 28px;
  min-height: 260px;
  border-right: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
.method-steps span {
  font-size: 11px;
  letter-spacing: 1px;
}
.method-steps h3 {
  font-size: 24px;
  margin: 90px 0 10px;
}
.method-steps p {
  font-size: 14px;
  line-height: 1.6;
}
.quotes {
  background: var(--deep);
  color: white;
  padding: 90px 56px;
}
.quotes > p {
  color: var(--lime);
}
.quotes > div {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  margin-top: 35px;
}
.quotes blockquote {
  font-size: 25px;
  line-height: 1.35;
  margin: 0;
  padding: 28px 0;
  border-top: 1px solid #456054;
  color: #edf2ef;
}
.transcript {
  padding: 110px 56px;
  background: var(--paper);
}
.transcript-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
}
.transcript-head > div > p:last-child {
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 700px;
}
.transcript-head > span {
  font-size: 62px;
  letter-spacing: -3px;
  color: #ccd2ca;
  font-weight: 800;
}
.transcript-details {
  margin-top: 55px;
}
.transcript-details > summary {
  height: 74px;
  background: var(--ink);
  color: white;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  list-style: none;
  border-bottom: 4px solid var(--lime);
  font-weight: 750;
}
.transcript-details > summary::-webkit-details-marker {
  display: none;
}
.transcript-details > summary b {
  font-size: 25px;
  transition: 0.2s;
}
.transcript-details[open] > summary b {
  transform: rotate(45deg);
}
.timeline {
  border-left: 1px solid var(--line);
  border-right: 1px solid var(--line);
}
.timeline-item {
  display: grid;
  grid-template-columns: 150px 1fr;
  border-bottom: 1px solid var(--line);
  padding: 36px;
}
.timeline-meta {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.timeline-meta span {
  font-size: 30px;
  color: var(--lime);
  font-weight: 800;
}
.timeline-meta time {
  font-size: 11px;
  color: var(--muted);
}
.timeline-copy h3 {
  font-size: 24px;
  margin: 0 0 18px;
}
.timeline-copy p {
  font-size: 15px;
  line-height: 1.8;
  color: #3d5147;
}
.timeline-copy p + p {
  margin-top: 1em;
}
.closing {
  padding: 120px 56px;
  background: var(--deep);
  color: white;
  text-align: center;
}
.closing h2 {
  font-size: clamp(54px, 7vw, 100px);
  letter-spacing: -6px;
}
.closing .button {
  margin-top: 25px;
}
.site-shell footer {
  height: 90px;
  padding: 0 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #06140e;
  color: #9aaba1;
  font-size: 11px;
  letter-spacing: 1px;
}
@media (max-width: 1000px) {
  .site-shell {
    width: 100%;
    margin: 0;
  }
  .header {
    padding: 0 26px;
    height: 76px;
  }
  .header nav {
    display: none;
    position: absolute;
    left: 0;
    right: 0;
    top: 76px;
    background: var(--deep);
    padding: 26px;
    flex-direction: column;
    align-items: flex-start;
  }
  .header nav.open {
    display: flex;
  }
  .header nav a {
    color: white;
    font-size: 16px;
  }
  .menu {
    display: flex;
    margin-left: auto;
    width: 54px;
    height: 54px;
    border-radius: 50%;
    background: var(--lime);
    border: 0;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 7px;
  }
  .menu span {
    width: 22px;
    border-top: 1px solid var(--ink);
  }
  .hero,
  .thesis,
  .practice,
  .roadmap {
    grid-template-columns: 1fr;
  }
  .hero {
    padding: 70px 28px;
    gap: 50px;
  }
  .hero-visual {
    height: 480px;
  }
  .thesis,
  .roles,
  .practice,
  .voyages,
  .roadmap,
  .method,
  .quotes,
  .transcript,
  .closing {
    padding: 76px 28px;
  }
  .roles-head {
    grid-template-columns: 1fr;
  }
  .roles-head > p:last-child {
    margin-top: 0;
  }
  .voyage-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .roadmap-copy {
    position: static;
  }
  .transcript-head > span {
    display: none;
  }
}
@media (max-width: 640px) {
  .site-shell {
    width: 100%;
    margin: 0;
  }
  .brand {
    font-size: 22px;
  }
  .brand span {
    display: none;
  }
  .hero {
    padding-top: 55px;
  }
  .hero h1 {
    font-size: 52px;
    letter-spacing: -3.5px;
  }
  .lede {
    font-size: 16px;
  }
  .hero-actions {
    align-items: flex-start;
    flex-direction: column;
  }
  .hero-visual {
    height: 400px;
    padding: 18px;
  }
  .agent-orbit strong {
    width: 130px;
    height: 130px;
    font-size: 22px;
  }
  .orbit-a {
    width: 230px;
    height: 230px;
  }
  .orbit-b {
    width: 330px;
    height: 330px;
  }
  .visual-stats b {
    font-size: 20px;
  }
  .section-title h2,
  .roles h2,
  .practice h2,
  .voyages h2,
  .roadmap h2,
  .method h2,
  .transcript h2 {
    font-size: 39px;
    letter-spacing: -2px;
  }
  .role-grid,
  .method-steps,
  .quotes > div {
    grid-template-columns: 1fr;
  }
  .role-grid article {
    min-height: 230px;
  }
  .role-grid h3 {
    margin-top: 35px;
  }
  .system-map {
    grid-template-columns: 1fr;
  }
  .system-map:after,
  .system-map:before {
    display: none;
  }
  .system-map article {
    border-bottom: 1px solid var(--ink);
    min-height: 155px;
  }
  .map-core {
    display: none;
  }
  .voyage-heading > span {
    font-size: 70px;
  }
  .voyage-grid {
    grid-template-columns: 1fr;
  }
  .voyage-grid article {
    min-height: 235px;
  }
  .method-steps article {
    min-height: 220px;
  }
  .method-steps h3 {
    margin-top: 60px;
  }
  .quotes blockquote {
    font-size: 22px;
  }
  .transcript-head {
    display: block;
  }
  .timeline-item {
    grid-template-columns: 1fr;
    padding: 28px 20px;
  }
  .timeline-meta {
    flex-direction: row;
    align-items: center;
    margin-bottom: 18px;
  }
  .timeline-meta span {
    font-size: 22px;
  }
  .timeline-copy h3 {
    font-size: 21px;
  }
  .closing h2 {
    font-size: 50px;
    letter-spacing: -3px;
  }
  .site-shell footer {
    height: auto;
    padding: 28px;
    gap: 12px;
    align-items: flex-start;
    flex-direction: column;
  }
}