:root {
  --sand: #ede3d2;
  --sand-light: #f6f0e6;
  --sand-deep: #d8c8ae;
  --espresso: #281a14;
  --espresso-2: #3b281f;
  --cobalt: #1747d1;
  --cobalt-bright: #2459f2;
  --ink: #211914;
  --muted: #6f6259;
  --line: rgba(40, 26, 20, 0.18);
  --serif: "Songti SC", "STSong", "SimSun", serif;
  --sans: "PingFang SC", "Microsoft YaHei", "Heiti SC", Arial, sans-serif;
  --header-h: 78px;
  --page-pad: clamp(20px, 4.4vw, 72px);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--ink);
  background-color: var(--sand);
  background-image: radial-gradient(rgba(40, 26, 20, 0.12) 0.65px, transparent 0.65px);
  background-size: 10px 10px;
  font-family: var(--sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

body.menu-open { overflow: hidden; }

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

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 1000;
  padding: 9px 15px;
  color: white;
  background: var(--cobalt);
  transform: translateY(-150%);
  transition: transform 160ms ease;
}

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

:focus-visible {
  outline: 3px solid #ffb000;
  outline-offset: 4px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--header-h);
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--line);
  background: rgba(237, 227, 210, 0.94);
  backdrop-filter: blur(16px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 0 var(--page-pad);
  border-right: 1px solid var(--line);
}

.brand-mark { position: relative; width: 33px; height: 33px; display: block; }
.brand-mark i { position: absolute; display: block; background: var(--espresso); }
.brand-mark i:nth-child(1) { width: 14px; height: 33px; left: 0; top: 0; }
.brand-mark i:nth-child(2) { width: 14px; height: 14px; right: 0; top: 0; background: var(--cobalt); }
.brand-mark i:nth-child(3) { width: 14px; height: 14px; right: 0; bottom: 0; border-radius: 50%; }

.brand-copy { display: grid; line-height: 1.1; }
.brand-copy strong { font-family: var(--serif); font-size: 18px; letter-spacing: 0.09em; }
.brand-copy small { margin-top: 4px; color: var(--muted); font-size: 10px; letter-spacing: 0.42em; }

.site-nav { margin-left: auto; display: flex; align-items: stretch; }
.site-nav a {
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 clamp(15px, 2vw, 30px);
  color: #4e4037;
  border-left: 1px solid var(--line);
  font-size: 13px;
  letter-spacing: 0.08em;
  transition: color 150ms ease, background 150ms ease;
}
.site-nav a::after {
  content: "";
  position: absolute;
  right: 50%; bottom: -1px; left: 50%;
  height: 3px;
  background: var(--cobalt);
  transition: left 180ms ease, right 180ms ease;
}
.site-nav a:hover::after, .site-nav a:focus-visible::after { right: 22%; left: 22%; }
.site-nav a:hover { color: var(--cobalt); }
.site-nav .nav-cta { min-width: 150px; justify-content: center; gap: 12px; color: white; background: var(--espresso); }
.site-nav .nav-cta:hover { color: white; background: var(--cobalt); }

.menu-toggle { display: none; }

.hero {
  min-height: calc(100svh - var(--header-h));
  display: grid;
  grid-template-columns: minmax(0, 0.94fr) minmax(500px, 1.06fr);
  border-bottom: 1px solid var(--line);
}

.hero-copy {
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  padding: clamp(72px, 9vw, 144px) clamp(32px, 5.8vw, 94px) clamp(55px, 7vw, 100px) var(--page-pad);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 27px;
  color: var(--cobalt);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.26em;
}
.eyebrow > span { width: 28px; height: 2px; background: currentColor; }
.eyebrow.light { color: #b7c7ff; }

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

h1, h2 { font-family: var(--serif); font-weight: 600; }

.hero h1 {
  max-width: 720px;
  margin-bottom: 31px;
  font-size: clamp(48px, 5.25vw, 86px);
  line-height: 1.09;
  letter-spacing: -0.045em;
}

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

.hero-intro {
  max-width: 625px;
  margin-bottom: 37px;
  color: #5d5047;
  font-size: clamp(15px, 1.15vw, 18px);
  line-height: 1.95;
}

.hero-actions { display: flex; align-items: center; gap: 31px; }
.button {
  min-height: 53px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 0 24px;
  border: 1px solid transparent;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  transition: color 160ms ease, background 160ms ease, border-color 160ms ease, transform 160ms ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { color: white; background: var(--cobalt); }
.button-primary:hover { background: var(--espresso); }
.text-link { padding: 8px 0; border-bottom: 1px solid var(--ink); font-size: 13px; font-weight: 700; letter-spacing: 0.06em; }

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin: 48px 0 0;
  padding: 0;
  list-style: none;
}
.hero-tags li { padding: 6px 11px; border: 1px solid var(--line); color: var(--muted); background: rgba(246,240,230,0.45); font-size: 10px; letter-spacing: 0.14em; }

.hero-visual {
  position: relative;
  min-width: 0;
  display: grid;
  place-items: center;
  padding: clamp(40px, 5vw, 80px);
  overflow: hidden;
  color: white;
  background-color: var(--espresso);
  background-image: radial-gradient(rgba(237,227,210,0.15) 0.8px, transparent 0.8px);
  background-size: 13px 13px;
}

.hero-visual::before {
  content: "";
  position: absolute;
  top: -27%; left: -15%;
  width: 55%; aspect-ratio: 1;
  border: 1px solid rgba(237,227,210,0.13);
  border-radius: 50%;
  box-shadow: 0 0 0 70px rgba(237,227,210,0.025), 0 0 0 140px rgba(237,227,210,0.018);
}
.hero-visual::after {
  content: "";
  position: absolute;
  right: -16%; bottom: -19%;
  width: 48%; aspect-ratio: 1;
  background: var(--cobalt);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
  opacity: .95;
}

.visual-corner { position: absolute; z-index: 2; width: 24px; height: 24px; border-color: rgba(255,255,255,.55); }
.visual-corner-a { top: 26px; left: 27px; border-top: 1px solid; border-left: 1px solid; }
.visual-corner-b { right: 27px; bottom: 26px; border-right: 1px solid; border-bottom: 1px solid; }

.map-panel {
  position: relative;
  z-index: 3;
  width: min(100%, 710px);
  border: 1px solid rgba(237,227,210,.26);
  background: rgba(22, 14, 11, .76);
  box-shadow: 28px 34px 0 rgba(0,0,0,.12);
  backdrop-filter: blur(3px);
}

.map-header, .map-footer { display: flex; align-items: center; }
.map-header {
  min-height: 55px;
  justify-content: space-between;
  padding: 0 19px;
  border-bottom: 1px solid rgba(237,227,210,.2);
  color: #d8cfc5;
  font-size: 11px;
  letter-spacing: .14em;
}
.live-state { display: flex; align-items: center; gap: 8px; }
.live-state i { width: 7px; height: 7px; border-radius: 50%; background: #7ce0a3; box-shadow: 0 0 0 5px rgba(124,224,163,.1); }

.map-canvas { position: relative; min-height: clamp(390px, 43vw, 520px); overflow: hidden; }
.map-lines { position: absolute; inset: 6% 4%; width: 92%; height: 88%; overflow: visible; }
.map-lines path, .map-lines circle { fill: none; stroke: rgba(237,227,210,.18); stroke-width: 1; vector-effect: non-scaling-stroke; }
.map-lines circle { stroke: rgba(36,89,242,.72); stroke-dasharray: 3 8; animation: orbit 18s linear infinite; transform-origin: 300px 230px; }

.map-node {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 11px;
  border: 1px solid rgba(237,227,210,.24);
  color: #e8dfd5;
  background: rgba(40,26,20,.88);
  font-size: 11px;
  letter-spacing: .12em;
}
.map-node b { color: #7f9fff; font-family: var(--serif); font-size: 10px; }
.node-1 { top: 9%; left: 44%; }
.node-2 { top: 33%; right: 4%; }
.node-3 { right: 12%; bottom: 14%; }
.node-4 { bottom: 21%; left: 6%; }

.map-core {
  position: absolute;
  z-index: 3;
  top: 50%; left: 50%;
  width: 142px; height: 142px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255,255,255,.65);
  background: var(--cobalt);
  transform: translate(-50%, -50%) rotate(45deg);
  box-shadow: 0 16px 55px rgba(23,71,209,.3);
}
.map-core span, .map-core strong { transform: rotate(-45deg); }
.map-core span { margin-bottom: 3px; color: #cbd6ff; font-size: 9px; letter-spacing: .18em; }
.map-core strong { font-family: var(--serif); font-size: 19px; letter-spacing: .08em; }
.map-core i { position: absolute; right: 10px; bottom: 10px; width: 7px; height: 7px; border: 1px solid white; }

.map-float { position: absolute; display: block; border: 1px solid rgba(237,227,210,.32); }
.float-a { top: 21%; left: 21%; width: 18px; height: 18px; transform: rotate(45deg); }
.float-b { right: 27%; bottom: 18%; width: 9px; height: 9px; background: var(--cobalt-bright); }
.float-c { top: 51%; left: 16%; width: 7px; height: 7px; border-radius: 50%; background: var(--sand); }

.map-footer { min-height: 65px; border-top: 1px solid rgba(237,227,210,.2); }
.map-footer div { flex: 1; display: grid; gap: 1px; padding: 9px 17px; border-right: 1px solid rgba(237,227,210,.17); }
.map-footer div:last-child { border: 0; }
.map-footer span { color: #887c73; font-size: 9px; letter-spacing: .16em; }
.map-footer strong { font-size: 11px; font-weight: 500; letter-spacing: .1em; }

.visual-note { position: absolute; z-index: 4; right: 25px; top: 25px; display: flex; align-items: center; gap: 15px; color: #b8aca2; font-size: 9px; letter-spacing: .18em; writing-mode: vertical-rl; }
.visual-note b { color: #6f8eed; font-size: 17px; }

.signal-bar {
  min-height: 61px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(19px, 3vw, 50px);
  padding: 15px var(--page-pad);
  color: #75685e;
  background: var(--sand-light);
  border-bottom: 1px solid var(--line);
  font-size: 10px;
  letter-spacing: .14em;
}
.signal-bar i { width: 5px; height: 5px; background: var(--cobalt); transform: rotate(45deg); }

.section-shell { padding: clamp(90px, 10vw, 160px) var(--page-pad); }

.manifesto { display: grid; grid-template-columns: minmax(140px, .33fr) minmax(0, 1.67fr); border-bottom: 1px solid var(--line); }
.section-index { display: flex; flex-direction: column; align-items: flex-start; }
.section-index > span { color: var(--cobalt); font-family: var(--serif); font-size: 14px; }
.section-index > p { margin-top: 15px; color: var(--muted); font-size: 10px; letter-spacing: .22em; writing-mode: vertical-rl; }
.manifesto-content h2 { max-width: 1000px; margin-bottom: 65px; font-size: clamp(44px, 5.9vw, 91px); line-height: 1.19; letter-spacing: -.035em; }
.manifesto-detail { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(30px, 7vw, 110px); max-width: 850px; margin-left: auto; }
.manifesto-detail p { margin: 0; padding-top: 20px; border-top: 1px solid var(--line); color: #5e5148; font-size: 14px; line-height: 1.95; }

.section-heading { display: flex; justify-content: space-between; align-items: flex-end; gap: 50px; margin-bottom: 64px; }
.section-heading h2, .scenario-intro h2, .faq-heading h2 { margin-bottom: 0; font-size: clamp(42px, 4.5vw, 70px); line-height: 1.2; letter-spacing: -.035em; }
.section-heading > p { max-width: 420px; margin-bottom: 8px; color: var(--muted); font-size: 14px; line-height: 1.9; }

.capabilities { background: var(--sand-light); border-bottom: 1px solid var(--line); }
.capability-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.capability-card {
  position: relative;
  min-height: 530px;
  display: flex;
  flex-direction: column;
  padding: clamp(24px, 2.6vw, 42px);
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
  transition: transform 180ms ease, box-shadow 180ms ease;
}
.capability-card::after { content: ""; position: absolute; inset: auto 0 0; height: 5px; background: var(--cobalt); transform: scaleX(0); transform-origin: left; transition: transform 180ms ease; }
.capability-card:hover { z-index: 2; transform: translateY(-8px); box-shadow: 0 22px 45px rgba(40,26,20,.13); }
.capability-card:hover::after { transform: scaleX(1); }
.card-dark { color: white; background: var(--espresso); }
.card-blue { color: white; background: var(--cobalt); }
.card-sand { background: #dfd0b8; }
.card-light { background: #f9f5ee; }
.card-top { display: flex; justify-content: space-between; align-items: center; font-family: var(--serif); font-size: 12px; }
.card-top i { font-style: normal; font-size: 18px; }
.card-icon { position: relative; width: 100px; height: 100px; margin: 57px 0 62px; }
.card-icon i { position: absolute; display: block; border: 1px solid currentColor; }
.strategy-icon i:nth-child(1) { inset: 10px; transform: rotate(45deg); }
.strategy-icon i:nth-child(2) { top: 34px; left: 34px; width: 32px; height: 32px; background: var(--cobalt); transform: rotate(45deg); }
.strategy-icon i:nth-child(3) { top: 46px; left: 46px; width: 8px; height: 8px; background: white; }
.design-icon i:nth-child(1), .design-icon i:nth-child(2), .design-icon i:nth-child(3) { width: 55px; height: 55px; border-radius: 50%; }
.design-icon i:nth-child(1) { top: 0; left: 22px; }
.design-icon i:nth-child(2) { bottom: 0; left: 0; }
.design-icon i:nth-child(3) { right: 0; bottom: 0; background: rgba(255,255,255,.12); }
.tech-icon i:nth-child(1) { inset: 5px; border-radius: 50%; }
.tech-icon i:nth-child(2) { top: 49px; left: 0; width: 100px; }
.tech-icon i:nth-child(3) { top: 0; left: 49px; width: 1px; height: 100px; border: 0; background: currentColor; transform: rotate(45deg); }
.operation-icon i:nth-child(1) { inset: 7px; border-radius: 50%; border-style: dashed; }
.operation-icon i:nth-child(2) { inset: 27px; border-radius: 50%; background: var(--cobalt); border: 0; }
.operation-icon i:nth-child(3) { right: 6px; top: 44px; width: 12px; height: 12px; background: var(--espresso); transform: rotate(45deg); }
.capability-card h3 { margin-bottom: 12px; font-family: var(--serif); font-size: 28px; }
.capability-card > p { min-height: 86px; margin-bottom: 25px; opacity: .76; font-size: 13px; line-height: 1.8; }
.capability-card ul { display: flex; flex-wrap: wrap; gap: 8px; margin: auto 0 0; padding: 0; list-style: none; }
.capability-card li { padding: 4px 8px; border: 1px solid currentColor; opacity: .66; font-size: 9px; letter-spacing: .12em; }

.scenarios { display: grid; grid-template-columns: minmax(140px, .22fr) minmax(0, 1.78fr); }
.scenario-content { min-width: 0; }
.scenario-intro { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 25px; margin-bottom: 58px; }
.scenario-intro .eyebrow { width: 100%; }
.scenario-intro > p:not(.eyebrow) { max-width: 300px; margin: 0 0 9px; color: var(--muted); font-size: 13px; }
.scenario-switcher { display: grid; grid-template-columns: minmax(260px, .55fr) minmax(0, 1.45fr); border: 1px solid var(--line); background: rgba(246,240,230,.55); }
.scenario-tabs { display: flex; flex-direction: column; border-right: 1px solid var(--line); }
.scenario-tabs button { flex: 1; min-height: 103px; display: grid; grid-template-columns: 34px 1fr auto; align-items: center; gap: 8px; padding: 20px 25px; border: 0; border-bottom: 1px solid var(--line); text-align: left; background: transparent; cursor: pointer; }
.scenario-tabs button:last-child { border-bottom: 0; }
.scenario-tabs button span { color: var(--cobalt); font-family: var(--serif); font-size: 10px; }
.scenario-tabs button strong { font-family: var(--serif); font-size: 18px; font-weight: 600; }
.scenario-tabs button i { font-style: normal; transition: transform 160ms ease; }
.scenario-tabs button[aria-selected="true"] { color: white; background: var(--espresso); }
.scenario-tabs button[aria-selected="true"] span { color: #92aaff; }
.scenario-tabs button:hover i { transform: translateX(5px); }

.scenario-panel { min-height: 470px; display: grid; grid-template-rows: 1fr auto; }
.scenario-panel[hidden] { display: none; }
.scenario-visual { position: relative; min-height: 290px; overflow: hidden; background-color: var(--cobalt); background-image: linear-gradient(rgba(255,255,255,.13) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.13) 1px, transparent 1px); background-size: 42px 42px; }
.mini-window { position: absolute; top: 48px; left: 12%; width: 65%; height: 180px; border: 1px solid white; background: var(--sand-light); box-shadow: 35px 28px 0 rgba(40,26,20,.85); }
.mini-window i { position: relative; top: 11px; left: 13px; float: left; width: 6px; height: 6px; margin-right: 5px; border-radius: 50%; background: var(--espresso); }
.mini-window span { position: absolute; top: 43px; left: 19px; width: 45%; height: 10px; background: var(--espresso); box-shadow: 0 23px 0 var(--sand-deep), 0 46px 0 var(--sand-deep), 0 69px 0 var(--sand-deep); }
.mini-window b { position: absolute; top: 42px; right: 18px; width: 33%; height: 102px; background: var(--cobalt); clip-path: polygon(0 12%, 100% 0, 84% 100%, 14% 85%); }
.mini-card { position: absolute; width: 72px; height: 72px; border: 1px solid rgba(255,255,255,.6); transform: rotate(45deg); }
.mini-card-a { top: 28px; right: 10%; }
.mini-card-b { right: 4%; bottom: 22px; width: 35px; height: 35px; background: var(--sand); }
.scenario-copy { display: grid; grid-template-columns: 80px 1fr; column-gap: 20px; padding: 28px clamp(24px, 4vw, 50px); background: var(--sand-light); }
.scenario-copy > span { grid-row: 1 / 4; color: var(--cobalt); font-size: 9px; letter-spacing: .15em; }
.scenario-copy h3 { margin-bottom: 7px; font-family: var(--serif); font-size: 22px; }
.scenario-copy p { margin-bottom: 12px; color: var(--muted); font-size: 12px; line-height: 1.8; }
.scenario-copy ul { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.scenario-copy li { font-size: 9px; letter-spacing: .1em; }
.scenario-copy li:not(:last-child)::after { content: "/"; margin-left: 8px; color: var(--cobalt); }
.platform-visual { background-color: #39271e; }
.flow-node { position: absolute; z-index: 2; width: 72px; height: 72px; border: 1px solid white; background: var(--espresso); transform: rotate(45deg); }
.flow-node-a { top: 48px; left: 13%; }
.flow-node-b { top: 135px; left: 43%; background: var(--cobalt); }
.flow-node-c { top: 63px; right: 12%; border-radius: 50%; transform: none; background: var(--sand); }
.flow-line { position: absolute; top: 50%; left: 16%; width: 68%; height: 1px; background: rgba(255,255,255,.7); transform: rotate(-6deg); }
.growth-visual { background-color: #d5c3a8; }
.growth-ring { position: absolute; top: 35px; left: 10%; width: 215px; height: 215px; border: 27px solid var(--espresso); border-right-color: var(--cobalt); border-radius: 50%; }
.growth-bar { position: absolute; bottom: 0; width: 13%; background: var(--espresso); }
.growth-bar-a { right: 35%; height: 28%; }
.growth-bar-b { right: 19%; height: 51%; background: var(--cobalt); }
.growth-bar-c { right: 3%; height: 76%; }

.process { display: grid; grid-template-columns: minmax(360px, .88fr) minmax(0, 1.12fr); color: white; background: var(--espresso); }
.process-lead { min-height: 760px; display: flex; flex-direction: column; align-items: flex-start; justify-content: center; padding: clamp(80px, 9vw, 145px) clamp(40px, 7vw, 115px) clamp(80px, 9vw, 145px) var(--page-pad); background-image: radial-gradient(rgba(237,227,210,.12) .75px, transparent .75px); background-size: 12px 12px; border-right: 1px solid rgba(255,255,255,.16); }
.process-lead h2 { margin-bottom: 34px; font-size: clamp(43px, 4.5vw, 69px); line-height: 1.18; letter-spacing: -.04em; }
.process-lead > p:not(.eyebrow) { max-width: 500px; margin-bottom: 36px; color: #b8aca2; font-size: 13px; line-height: 1.9; }
.button-outline { color: white; border-color: rgba(255,255,255,.4); }
.button-outline:hover { color: var(--espresso); background: var(--sand); border-color: var(--sand); }
.process-list { margin: 0; padding: 0; list-style: none; }
.process-list li { min-height: 25%; display: grid; grid-template-columns: 90px 1fr; gap: 30px; padding: 49px clamp(35px, 6vw, 90px); border-bottom: 1px solid rgba(255,255,255,.16); transition: background 160ms ease; }
.process-list li:last-child { border-bottom: 0; }
.process-list li:hover { background: var(--cobalt); }
.process-list > li > span { color: #8aa3ff; font-family: var(--serif); font-size: 13px; }
.process-list h3 { margin-bottom: 7px; font-family: var(--serif); font-size: 25px; }
.process-list p { max-width: 590px; margin-bottom: 9px; color: #a89b91; font-size: 12px; line-height: 1.75; }
.process-list li:hover p { color: #d5ddff; }
.process-list b { color: #d5cbc3; font-size: 9px; font-weight: 500; letter-spacing: .14em; }

.collaboration { background: var(--sand-light); border-bottom: 1px solid var(--line); }
.collab-grid { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); border-left: 1px solid var(--line); }
.collab-card { min-height: 310px; display: flex; flex-direction: column; padding: clamp(28px, 3.2vw, 50px); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); transition: color 180ms ease, background 180ms ease; }
.collab-card:hover { color: white; background: var(--cobalt); }
.collab-number { margin-bottom: 62px; color: var(--cobalt); font-family: var(--serif); font-size: 13px; }
.collab-card:hover .collab-number { color: #b5c5ff; }
.collab-card h3 { margin-bottom: 12px; font-family: var(--serif); font-size: 27px; }
.collab-card p { max-width: 360px; margin-bottom: 28px; color: var(--muted); font-size: 13px; line-height: 1.8; }
.collab-card:hover p { color: #dce3ff; }
.collab-card strong { margin-top: auto; font-size: 10px; letter-spacing: .12em; }

.faq { display: grid; grid-template-columns: .75fr 1.25fr; gap: clamp(45px, 9vw, 145px); }
.faq-list { border-top: 1px solid var(--line); }
.faq-list details { border-bottom: 1px solid var(--line); }
.faq-list summary { min-height: 86px; display: flex; align-items: center; justify-content: space-between; gap: 25px; cursor: pointer; list-style: none; font-family: var(--serif); font-size: 18px; }
.faq-list summary::-webkit-details-marker { display: none; }
.faq-list summary i { position: relative; flex: 0 0 17px; width: 17px; height: 17px; }
.faq-list summary i::before, .faq-list summary i::after { content: ""; position: absolute; top: 8px; left: 0; width: 17px; height: 1px; background: var(--cobalt); transition: transform 160ms ease; }
.faq-list summary i::after { transform: rotate(90deg); }
.faq-list details[open] summary i::after { transform: rotate(0); }
.faq-list details p { max-width: 650px; padding: 0 45px 28px 0; color: var(--muted); font-size: 13px; line-height: 1.9; }

.closing { position: relative; min-height: 650px; display: grid; grid-template-columns: 1.1fr .9fr; align-items: center; padding: clamp(80px, 9vw, 140px) var(--page-pad); overflow: hidden; color: white; background: var(--cobalt); }
.closing-grid { position: absolute; inset: 0; opacity: .25; background-image: linear-gradient(rgba(255,255,255,.24) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.24) 1px, transparent 1px); background-size: 66px 66px; mask-image: linear-gradient(90deg, black, transparent 80%); }
.closing-copy { position: relative; z-index: 2; }
.closing h2 { max-width: 800px; margin-bottom: 27px; font-size: clamp(47px, 6.5vw, 99px); line-height: 1.08; letter-spacing: -.05em; }
.closing-copy > p:not(.eyebrow) { margin-bottom: 38px; color: #dbe2ff; font-size: 14px; }
.button-sand { color: var(--espresso); background: var(--sand); }
.button-sand:hover { color: white; background: var(--espresso); }
.closing-mark { position: relative; z-index: 2; width: min(30vw, 410px); aspect-ratio: 1; justify-self: center; animation: float 5s ease-in-out infinite; }
.closing-mark i { position: absolute; display: block; border: 1px solid rgba(255,255,255,.7); }
.closing-mark i:nth-child(1) { inset: 8%; transform: rotate(45deg); }
.closing-mark i:nth-child(2) { inset: 24%; border-radius: 50%; background: rgba(40,26,20,.18); }
.closing-mark i:nth-child(3) { top: 44%; left: 44%; width: 12%; height: 12%; background: var(--sand); transform: rotate(45deg); }
.closing-mark b { position: absolute; top: 3%; right: 13%; width: 29%; height: 29%; border: 1px solid rgba(255,255,255,.7); border-radius: 50%; }

.brief-dialog { width: min(720px, calc(100% - 32px)); max-height: calc(100svh - 32px); padding: 0; border: 1px solid rgba(255,255,255,.3); color: var(--ink); background: var(--sand-light); box-shadow: 0 30px 90px rgba(0,0,0,.38); }
.brief-dialog::backdrop { background: rgba(26,17,13,.78); backdrop-filter: blur(6px); }
.dialog-head { min-height: 58px; display: flex; align-items: center; justify-content: space-between; padding-left: 24px; color: white; background: var(--espresso); font-size: 10px; letter-spacing: .18em; }
.dialog-head button { position: relative; align-self: stretch; width: 58px; border: 0; border-left: 1px solid rgba(255,255,255,.2); background: transparent; cursor: pointer; }
.dialog-head button i::before, .dialog-head button i::after { content: ""; position: absolute; top: 50%; left: 50%; width: 19px; height: 1px; background: white; transform: translate(-50%, -50%) rotate(45deg); }
.dialog-head button i::after { transform: translate(-50%, -50%) rotate(-45deg); }
.dialog-body { padding: clamp(28px, 5vw, 55px); }
.dialog-body h2 { margin-bottom: 35px; font-size: clamp(31px, 5vw, 46px); line-height: 1.25; }
.dialog-body ol { margin: 0 0 34px; padding: 0; border-top: 1px solid var(--line); list-style: none; }
.dialog-body li { display: grid; grid-template-columns: 48px 1fr; gap: 16px; padding: 17px 0; border-bottom: 1px solid var(--line); }
.dialog-body li > span { color: var(--cobalt); font-family: var(--serif); font-size: 10px; }
.dialog-body li strong { font-family: var(--serif); font-size: 16px; }
.dialog-body li p { margin: 3px 0 0; color: var(--muted); font-size: 11px; }
.dialog-confirm { width: 100%; }

.reveal { opacity: 0; transform: translateY(22px); clip-path: inset(0 0 12% 0); transition: opacity 430ms ease, transform 430ms cubic-bezier(.2,.8,.2,1), clip-path 430ms cubic-bezier(.2,.8,.2,1); }
.reveal.is-visible { opacity: 1; transform: translateY(0); clip-path: inset(0 0 0 0); }

@keyframes orbit { to { transform: rotate(360deg); } }
@keyframes float { 50% { transform: translateY(-13px) rotate(2deg); } }

@media (max-width: 1180px) {
  .site-nav a { padding-inline: 16px; }
  .site-nav a:nth-child(1) { display: none; }
  .hero { grid-template-columns: minmax(0, .9fr) minmax(440px, 1.1fr); }
  .capability-grid { grid-template-columns: repeat(2, 1fr); }
  .capability-card { min-height: 470px; }
  .process-list li { padding-inline: 45px; }
}

@media (max-width: 900px) {
  :root { --header-h: 68px; }
  .brand { border-right: 0; }
  .menu-toggle {
    margin-left: auto;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 var(--page-pad);
    border: 0;
    border-left: 1px solid var(--line);
    background: transparent;
    cursor: pointer;
    font-size: 11px;
    letter-spacing: .12em;
  }
  .menu-icon { position: relative; width: 19px; height: 14px; display: block; }
  .menu-icon i { position: absolute; left: 0; width: 19px; height: 1px; background: currentColor; transition: top 180ms ease, transform 180ms ease; }
  .menu-icon i:first-child { top: 3px; }
  .menu-icon i:last-child { top: 10px; }
  .menu-toggle[aria-expanded="true"] .menu-icon i:first-child { top: 7px; transform: rotate(45deg); }
  .menu-toggle[aria-expanded="true"] .menu-icon i:last-child { top: 7px; transform: rotate(-45deg); }
  .site-nav {
    position: fixed;
    top: var(--header-h); right: 0; left: 0;
    height: calc(100svh - var(--header-h));
    display: flex;
    flex-direction: column;
    align-items: stretch;
    padding: 26px var(--page-pad);
    color: white;
    background: var(--espresso);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-15px);
    transition: opacity 180ms ease, visibility 180ms ease, transform 180ms ease;
  }
  .site-nav.is-open { opacity: 1; visibility: visible; transform: translateY(0); }
  .site-nav a, .site-nav a:nth-child(1) { min-height: 68px; display: flex; padding: 0 5px; color: white; border: 0; border-bottom: 1px solid rgba(255,255,255,.16); font-family: var(--serif); font-size: 22px; }
  .site-nav .nav-cta { min-height: 60px; margin-top: 28px; padding: 0 20px; color: var(--espresso); background: var(--sand); border: 0; font-family: var(--sans); font-size: 13px; }
  .hero { grid-template-columns: 1fr; }
  .hero-copy { min-height: calc(88svh - var(--header-h)); }
  .hero-visual { min-height: 720px; }
  .manifesto, .scenarios { grid-template-columns: 80px 1fr; }
  .section-index > p { display: none; }
  .scenario-switcher { grid-template-columns: 1fr; }
  .scenario-tabs { display: grid; grid-template-columns: repeat(3, 1fr); border-right: 0; border-bottom: 1px solid var(--line); }
  .scenario-tabs button { min-height: 92px; grid-template-columns: 1fr auto; border-right: 1px solid var(--line); border-bottom: 0; }
  .scenario-tabs button:last-child { border-right: 0; }
  .scenario-tabs button span { display: none; }
  .scenario-tabs button strong { font-size: 15px; }
  .process { grid-template-columns: 1fr; }
  .process-lead { min-height: auto; border-right: 0; border-bottom: 1px solid rgba(255,255,255,.16); }
  .collab-grid { grid-template-columns: 1fr; }
  .collab-card { min-height: 240px; }
  .collab-number { margin-bottom: 38px; }
  .faq { grid-template-columns: 1fr; }
  .closing { min-height: 660px; grid-template-columns: 1fr; }
  .closing-mark { position: absolute; right: -5%; bottom: -12%; width: 44vw; opacity: .55; }
}

@media (max-width: 640px) {
  :root { --page-pad: 21px; }
  .brand-copy strong { font-size: 16px; }
  .brand-copy small { display: none; }
  .hero-copy { min-height: auto; padding-block: 76px 62px; }
  .hero h1 { font-size: clamp(43px, 13vw, 60px); }
  .hero-actions { width: 100%; align-items: flex-start; flex-direction: column; gap: 18px; }
  .button-primary { width: 100%; }
  .hero-tags { margin-top: 38px; }
  .hero-visual { min-height: 560px; padding: 38px 18px; }
  .map-panel { box-shadow: 12px 15px 0 rgba(0,0,0,.13); }
  .map-canvas { min-height: 370px; }
  .map-core { width: 108px; height: 108px; }
  .map-core strong { font-size: 15px; }
  .node-1 { left: 38%; }
  .node-2 { right: 2%; }
  .node-3 { right: 5%; }
  .node-4 { left: 2%; }
  .map-footer div { padding-inline: 10px; }
  .visual-note { display: none; }
  .signal-bar { justify-content: flex-start; gap: 11px; overflow: hidden; white-space: nowrap; }
  .signal-bar span:nth-of-type(n+3), .signal-bar i:nth-of-type(n+3) { display: none; }
  .section-shell { padding-block: 84px; }
  .manifesto, .scenarios { grid-template-columns: 1fr; }
  .section-index { margin-bottom: 40px; }
  .manifesto-content h2 { margin-bottom: 45px; font-size: 42px; }
  .manifesto-detail { grid-template-columns: 1fr; gap: 24px; }
  .section-heading { align-items: flex-start; flex-direction: column; margin-bottom: 43px; }
  .section-heading h2, .scenario-intro h2, .faq-heading h2 { font-size: 40px; }
  .capability-grid { grid-template-columns: 1fr; }
  .capability-card { min-height: 420px; }
  .card-icon { margin-block: 44px; }
  .scenario-tabs { grid-template-columns: 1fr; }
  .scenario-tabs button { min-height: 66px; grid-template-columns: 31px 1fr auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .scenario-tabs button span { display: block; }
  .scenario-panel { min-height: 490px; }
  .scenario-visual { min-height: 270px; }
  .mini-window { left: 8%; width: 71%; }
  .scenario-copy { grid-template-columns: 1fr; }
  .scenario-copy > span { grid-row: auto; margin-bottom: 7px; }
  .process-lead { padding: 84px var(--page-pad); }
  .process-lead h2 { font-size: 42px; }
  .process-list li { grid-template-columns: 45px 1fr; gap: 10px; padding: 35px var(--page-pad); }
  .process-list h3 { font-size: 22px; }
  .faq-list summary { font-size: 16px; }
  .closing { min-height: 640px; }
  .closing h2 { font-size: 49px; }
  .closing .button { width: 100%; gap: 13px; padding-inline: 15px; }
  .closing-mark { width: 70vw; right: -28%; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; clip-path: none; }
}