:root {
  --paper: #f7fafc;
  --white: #ffffff;
  --ink: #122c46;
  --muted: #63788d;
  --line: #dce6ee;
  --blue: #3973e6;
  --blue-dark: #2259bd;
  --cyan: #5bb7cd;
  --teal: #42b8a5;
  --soft-blue: #e9f1ff;
  --soft-teal: #e8f7f4;
  --navy: #102d4c;
  --radius: 24px;
  --shadow: 0 24px 70px rgba(23, 61, 96, 0.12), 0 4px 16px rgba(23, 61, 96, 0.05);
}

* {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
}
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family:
    Inter,
    ui-sans-serif,
    -apple-system,
    BlinkMacSystemFont,
    'Segoe UI',
    'PingFang SC',
    'Microsoft YaHei',
    sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a {
  color: inherit;
  text-decoration: none;
}
button,
video {
  font: inherit;
}
button {
  color: inherit;
}
em {
  color: var(--blue);
  font-style: normal;
}
.library-icon {
  display: inline-block;
  width: 1em;
  height: 1em;
  flex: 0 0 auto;
  stroke-width: 1.8;
}
.page-progress {
  position: fixed;
  z-index: 1000;
  top: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--teal));
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  width: min(1320px, calc(100% - 40px));
  height: 66px;
  padding: 0 24px 0 20px;
  border: 1px solid rgba(199, 215, 226, 0.7);
  border-radius: 18px;
  background: rgba(252, 254, 255, 0.8);
  box-shadow: 0 10px 40px rgba(31, 64, 91, 0.07);
  backdrop-filter: blur(18px);
  transition: 0.3s ease;
}
.site-header.scrolled {
  top: 8px;
  box-shadow: 0 12px 42px rgba(31, 64, 91, 0.12);
}
.brand {
  display: flex;
  align-items: center;
  gap: 11px;
  font-size: 18px;
  font-weight: 750;
  letter-spacing: -0.5px;
  white-space: nowrap;
}
.brand > span:last-child > span {
  color: var(--blue);
}
.brand-mark {
  position: relative;
  display: inline-grid;
  width: 29px;
  height: 29px;
  grid-template: 1fr 1fr / 1fr 1fr;
  gap: 3px;
  transform: rotate(45deg);
}
.brand-mark span {
  display: block;
  border-radius: 2px 6px 2px 6px;
  background: var(--blue);
}
.brand-mark span:nth-child(2),
.brand-mark span:nth-child(3) {
  background: var(--teal);
  opacity: 0.85;
}
.brand-mark span:nth-child(4) {
  opacity: 0.45;
}
.header-partners {
  display: flex;
  margin-left: 24px;
  align-items: center;
  gap: 13px;
}
.header-partners > i {
  width: 1px;
  height: 24px;
  flex: 0 0 1px;
  background: #dce6ed;
}
.header-partners img {
  display: block;
  width: auto;
  object-fit: contain;
  mix-blend-mode: multiply;
}
.header-partners .school-logo {
  height: 31px;
}
.header-partners .lab-logo {
  height: 30px;
}
.desktop-nav {
  display: flex;
  margin-left: auto;
  align-items: center;
  gap: 34px;
}
.desktop-nav a {
  position: relative;
  color: #51697f;
  font-size: 14px;
  transition: 0.2s;
}
.desktop-nav a::after {
  position: absolute;
  bottom: -8px;
  left: 50%;
  width: 0;
  height: 2px;
  border-radius: 2px;
  background: var(--blue);
  content: '';
  transform: translateX(-50%);
  transition: 0.25s;
}
.desktop-nav a:hover,
.desktop-nav a.active {
  color: var(--ink);
}
.desktop-nav a:hover::after,
.desktop-nav a.active::after {
  width: 16px;
}
.menu-button {
  display: none;
  margin-left: auto;
  width: 42px;
  height: 42px;
  border: 0;
  border-radius: 10px;
  background: var(--soft-blue);
}
.menu-button span {
  display: block;
  width: 20px;
  height: 2px;
  margin: 5px auto;
  background: var(--ink);
  transition: 0.2s;
}

.hero {
  position: relative;
  display: grid;
  min-height: 860px;
  padding: 172px max(20px, calc((100vw - 1400px) / 2)) 90px;
  grid-template-columns: minmax(410px, 0.8fr) minmax(600px, 1.2fr);
  align-items: center;
  gap: clamp(48px, 4vw, 72px);
  overflow: hidden;
  background:
    linear-gradient(rgba(92, 123, 149, 0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(92, 123, 149, 0.06) 1px, transparent 1px),
    radial-gradient(circle at 12% 20%, rgba(79, 142, 227, 0.1), transparent 30%), var(--paper);
  background-size:
    48px 48px,
    48px 48px,
    auto,
    auto;
}
.hero::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(247, 250, 252, 0.25), rgba(247, 250, 252, 0.88) 49%, rgba(247, 250, 252, 0.18));
  content: '';
  pointer-events: none;
}
.hero-copy,
.hero-visual {
  position: relative;
  z-index: 2;
}
.hero-orb {
  position: absolute;
  z-index: 0;
  border-radius: 50%;
  filter: blur(2px);
}
.orb-one {
  right: 3%;
  top: 12%;
  width: 420px;
  height: 420px;
  background: radial-gradient(circle, rgba(64, 126, 222, 0.15), rgba(64, 126, 222, 0) 67%);
}
.orb-two {
  left: 35%;
  bottom: -10%;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(66, 184, 165, 0.12), transparent 67%);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 25px;
  padding: 8px 12px;
  border: 1px solid #d4e0e9;
  border-radius: 99px;
  background: rgba(255, 255, 255, 0.68);
  color: #577086;
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.07em;
}
.pulse-dot {
  position: relative;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--teal);
}
.pulse-dot::after {
  position: absolute;
  inset: -4px;
  border: 1px solid var(--teal);
  border-radius: 50%;
  content: '';
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,
  100% {
    transform: scale(0.6);
    opacity: 0;
  }
  45% {
    transform: scale(1);
    opacity: 0.45;
  }
}
.hero h1 {
  max-width: 650px;
  margin: 0;
  color: var(--navy);
  font-size: clamp(54px, 5vw, 78px);
  font-weight: 690;
  letter-spacing: -0.07em;
  line-height: 1.07;
}
.hero h1 em {
  position: relative;
}
.hero h1 em::after {
  position: absolute;
  right: 2px;
  bottom: -7px;
  left: 2px;
  height: 7px;
  border-radius: 50%;
  background: linear-gradient(90deg, rgba(57, 115, 230, 0.15), rgba(66, 184, 165, 0.5));
  content: '';
  transform: skewX(-20deg);
}
.hero-lead {
  max-width: 590px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.9;
}
.hero-actions {
  display: flex;
  gap: 13px;
  margin-top: 35px;
}
.button {
  display: inline-flex;
  height: 50px;
  padding: 0 21px;
  align-items: center;
  justify-content: center;
  gap: 14px;
  border-radius: 12px;
  font-size: 14px;
  font-weight: 650;
  transition: 0.25s;
}
.button-primary {
  color: white;
  background: var(--blue);
  box-shadow: 0 12px 28px rgba(57, 115, 230, 0.27);
}
.button-primary:hover {
  transform: translateY(-3px);
  background: var(--blue-dark);
  box-shadow: 0 17px 35px rgba(57, 115, 230, 0.32);
}
.button-ghost {
  border: 1px solid #d6e0e8;
  background: rgba(255, 255, 255, 0.72);
  color: #425d74;
}
.button-ghost:hover {
  transform: translateY(-2px);
  border-color: #b4c9db;
  background: white;
}
.play-mini {
  display: inline-grid;
  width: 24px;
  height: 24px;
  place-items: center;
  border-radius: 50%;
  color: var(--blue);
  background: var(--soft-blue);
}
.play-mini .library-icon {
  width: 11px;
  height: 11px;
}
.hero-stats {
  display: flex;
  gap: 36px;
  margin-top: 56px;
}
.hero-stats div {
  display: flex;
  min-width: 98px;
  flex-direction: column;
  gap: 5px;
}
.hero-stats strong {
  color: var(--navy);
  font-size: 25px;
  font-weight: 620;
}
.hero-stats span {
  color: #788b9c;
  font-size: 11px;
}

.hero-visual {
  --tilt-x: 0deg;
  --tilt-y: 0deg;
  --float-x: 0px;
  --float-y: 0px;
  width: min(760px, 100%);
  min-width: 0;
  justify-self: end;
  perspective: 1300px;
  transform-style: preserve-3d;
}
.app-window {
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(174, 198, 216, 0.82);
  border-radius: 24px;
  background: #ffffff;
  box-shadow:
    0 34px 80px rgba(26, 62, 92, 0.16),
    0 8px 24px rgba(42, 80, 110, 0.07);
  transform: rotateX(var(--tilt-x)) rotateY(var(--tilt-y));
  backface-visibility: hidden;
  will-change: transform;
  transition: transform 0.42s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.3s ease;
}
.hero-visual.is-tilting .app-window {
  box-shadow:
    0 42px 92px rgba(26, 62, 92, 0.19),
    0 10px 28px rgba(42, 80, 110, 0.09);
  transition-duration: 0.09s;
}
.window-topbar {
  display: flex;
  height: 54px;
  padding: 0 18px;
  align-items: center;
  border-bottom: 1px solid #e4ebf1;
  background: #fbfdff;
}
.traffic {
  display: flex;
  gap: 5px;
}
.traffic i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #cbd9e4;
}
.window-title {
  display: flex;
  margin-left: 24px;
  align-items: center;
  gap: 7px;
  color: #50697e;
  font-size: 12px;
  font-weight: 600;
}
.window-title b {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 4px rgba(66, 184, 165, 0.12);
}
.live-chip {
  display: flex;
  margin-left: auto;
  padding: 6px 9px;
  align-items: center;
  gap: 5px;
  border: 1px solid #cde9e4;
  border-radius: 7px;
  color: #308f80;
  background: #eefaf8;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.1em;
}
.live-chip i {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--teal);
  animation: pulse-solid 1.5s infinite;
}
@keyframes pulse-solid {
  50% {
    box-shadow: 0 0 0 4px rgba(66, 184, 165, 0.14);
  }
}
.app-layout {
  display: grid;
  min-height: 440px;
  grid-template-columns: minmax(0, 1fr) 170px;
  grid-template-rows: 72px minmax(0, 1fr);
}
.agent-list,
.metric-panel {
  background: #f8fbfd;
}
.agent-list {
  display: flex;
  min-width: 0;
  padding: 11px 18px;
  grid-column: 1;
  grid-row: 1;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid #e7eef3;
}
.agent-list > small {
  width: 70px;
  flex: 0 0 70px;
  color: #8999a7;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.05em;
}
.metric-panel > small {
  display: block;
  margin-bottom: 16px;
  color: #7b8f9f;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
}
.agent {
  position: relative;
  display: flex;
  min-width: 0;
  margin: 0;
  padding: 7px;
  flex: 1;
  align-items: center;
  gap: 7px;
  border: 1px solid transparent;
  border-radius: 9px;
}
.agent.active {
  border-color: #cfddf6;
  background: white;
  box-shadow: 0 4px 14px rgba(45, 82, 115, 0.06);
}
.avatar {
  display: grid;
  width: 29px;
  height: 29px;
  flex: 0 0 29px;
  place-items: center;
  border-radius: 8px;
  color: #285daf;
  background: #dfebff;
  font-size: 10px;
  font-weight: 700;
}
.a2 {
  color: #288e7c;
  background: #ddf5f0;
}
.a3 {
  color: #916f29;
  background: #f7efd9;
}
.a4 {
  color: #7661af;
  background: #eee9fa;
}
.agent p {
  display: flex;
  margin: 0;
  flex-direction: column;
  color: #405970;
  font-size: 9px;
  font-weight: 650;
  line-height: 1.5;
}
.agent p small {
  color: #96a5b2;
  font-size: 8px;
  font-weight: 400;
}
.agent > i {
  width: 5px;
  height: 5px;
  margin-left: auto;
  border-radius: 50%;
  background: var(--teal);
}
.knowledge-map {
  position: relative;
  display: grid;
  padding: 20px 24px;
  grid-column: 1;
  grid-row: 2;
  grid-template-rows: auto minmax(0, 1fr) auto;
  background: radial-gradient(circle at center, #fbfdff 0, #f6fafe 75%);
  overflow: hidden;
}
.knowledge-map::before {
  position: absolute;
  inset: 0;
  opacity: 0.55;
  background-image: radial-gradient(#b8cada 1px, transparent 1px);
  background-size: 16px 16px;
  content: '';
  mask-image: linear-gradient(to bottom, transparent, black 20%, black 80%, transparent);
}
.map-head {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #647b8f;
  font-size: 11px;
  font-weight: 650;
}
.map-head small {
  color: #8597a7;
  font-size: 10px;
  font-weight: 400;
}
.map-head b {
  color: var(--blue);
  font-weight: 700;
}
.network {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 240px;
  overflow: visible;
}
.net-lines path {
  fill: none;
  stroke: url(#lineGrad);
  stroke-dasharray: 5 5;
  stroke-width: 1.3;
  opacity: 0.65;
  animation: march 12s linear infinite;
}
@keyframes march {
  to {
    stroke-dashoffset: -100;
  }
}
.node {
  filter: url(#shadow);
}
.node circle {
  fill: rgba(232, 241, 255, 0.8);
  stroke: #9bb9ed;
  stroke-width: 1.2;
  transform-box: fill-box;
  transform-origin: center;
  animation: node-pulse 4s ease-in-out infinite;
}
.node circle:nth-child(2) {
  fill: white;
  stroke: #d1def3;
  animation-delay: -0.8s;
}
.node text {
  text-anchor: middle;
  dominant-baseline: central;
  fill: #3863a6;
  font-size: 11px;
  font-weight: 700;
}
@keyframes node-pulse {
  50% {
    transform: scale(1.035);
  }
}
.node.secondary circle {
  fill: white;
  stroke: #b9cddd;
}
.node.secondary text {
  fill: #587188;
}
.node.success circle {
  fill: #eaf8f5;
  stroke: #7ccbbb;
}
.node.success text {
  fill: #308d7d;
}
.intervention-toast {
  position: relative;
  z-index: 3;
  display: flex;
  padding: 11px 12px;
  align-items: center;
  gap: 10px;
  border: 1px solid #dbe6ee;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.82);
}
.spark-icon {
  display: grid;
  width: 29px;
  height: 29px;
  place-items: center;
  border-radius: 8px;
  color: var(--blue);
  background: var(--soft-blue);
}
.spark-icon .library-icon {
  width: 14px;
  height: 14px;
}
.intervention-toast p {
  display: flex;
  margin: 0;
  flex-direction: column;
  gap: 2px;
  color: #355069;
  font-size: 11px;
}
.intervention-toast p small {
  color: #8293a3;
  font-size: 9px;
}
.intervention-toast button {
  display: grid;
  width: 25px;
  height: 25px;
  margin-left: auto;
  padding: 0;
  place-items: center;
  border: 0;
  background: transparent;
  color: var(--blue);
  cursor: pointer;
}
.intervention-toast button .library-icon {
  width: 14px;
  height: 14px;
}
.metric-panel {
  padding: 20px 16px;
  grid-column: 2;
  grid-row: 1 / 3;
  border-left: 1px solid #e7eef3;
}
.ring {
  display: grid;
  width: 92px;
  height: 92px;
  margin: 14px auto 9px;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--blue) calc(var(--value) * 1%), #e6edf3 0);
}
.ring::before {
  position: absolute;
  width: 74px;
  height: 74px;
  border-radius: 50%;
  background: #f8fbfd;
  content: '';
}
.ring span {
  position: relative;
  color: #7d8fa0;
  font-size: 9px;
}
.ring b {
  color: var(--ink);
  font-size: 24px;
}
.ring-label {
  margin: 0 0 24px;
  color: #647b8e;
  text-align: center;
  font-size: 10px;
}
.mini-metric {
  display: grid;
  margin-bottom: 18px;
  grid-template-columns: 1fr auto;
  gap: 5px;
  color: #778b9c;
  font-size: 9px;
}
.mini-metric b {
  color: #435e75;
}
.mini-metric i {
  height: 3px;
  grid-column: 1/-1;
  border-radius: 3px;
  background: #e4ebf1;
  overflow: hidden;
}
.mini-metric u {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--blue), var(--teal));
}
.trend-card {
  margin-top: 24px;
  padding: 10px;
  border: 1px solid #e2eaf0;
  border-radius: 10px;
  background: white;
  color: #8495a4;
  font-size: 9px;
}
.trend-card svg {
  display: block;
  width: 100%;
  margin: 7px 0 2px;
}
.trend-card path {
  fill: none;
  stroke: var(--teal);
  stroke-width: 2;
}
.trend-card b {
  display: flex;
  align-items: center;
  gap: 3px;
  color: var(--teal);
  font-size: 9px;
}
.trend-card b .library-icon {
  width: 9px;
  height: 9px;
}
.feature-float {
  position: absolute;
  z-index: 4;
  display: flex;
  min-width: 184px;
  padding: 11px 15px 11px 11px;
  align-items: center;
  gap: 11px;
  border: 1px solid rgba(207, 222, 233, 0.92);
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 16px 38px rgba(30, 69, 101, 0.13);
  backdrop-filter: blur(14px);
  will-change: transform;
  transition: transform 0.42s cubic-bezier(0.2, 0.7, 0.2, 1), box-shadow 0.3s ease;
}
.feature-float > span {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  place-items: center;
  border-radius: 11px;
  color: var(--blue);
  background: var(--soft-blue);
}
.feature-float > span .library-icon {
  width: 18px;
  height: 18px;
}
.feature-float p {
  display: flex;
  margin: 0;
  flex-direction: column;
  gap: 3px;
  color: var(--navy);
}
.feature-float b {
  font-size: 12px;
  font-weight: 700;
}
.feature-float small {
  color: #7d91a1;
  font-size: 10px;
}
.feature-float-agents {
  top: -44px;
  left: 42px;
  transform: translate3d(var(--float-x), var(--float-y), 34px);
}
.feature-float-branches {
  right: 40px;
  bottom: -42px;
  transform: translate3d(var(--float-x), var(--float-y), 42px);
}
.feature-float-branches > span {
  color: #278d7c;
  background: var(--soft-teal);
}
.hero-visual.is-tilting .feature-float {
  box-shadow: 0 20px 44px rgba(30, 69, 101, 0.16);
  transition-duration: 0.09s;
}
.problem-strip {
  position: relative;
  z-index: 5;
  display: flex;
  width: min(1280px, calc(100% - 40px));
  min-height: 84px;
  margin: -42px auto 0;
  padding: 8px;
  align-items: center;
  gap: 11px;
  border: 1px solid rgba(207, 221, 232, 0.88);
  border-radius: 21px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 17px 50px rgba(25, 65, 98, 0.1);
  backdrop-filter: blur(16px);
}
.strip-item {
  display: flex;
  min-width: 0;
  min-height: 66px;
  padding: 10px 18px;
  flex: 1;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border: 1px solid transparent;
  border-radius: 14px;
}
.strip-item strong {
  color: var(--ink);
  font-size: 16px;
  font-weight: 650;
  line-height: 1.45;
  text-wrap: balance;
}
.strip-icon {
  display: grid;
  width: 38px;
  height: 38px;
  flex: 0 0 38px;
  place-items: center;
  border-radius: 10px;
}
.strip-icon .library-icon {
  width: 18px;
  height: 18px;
}
.strip-amber {
  border-color: #f3e4c9;
  background: #fffaf0;
}
.strip-amber .strip-icon {
  color: #b77b25;
  background: #ffedcc;
}
.strip-blue {
  border-color: #d9e5fb;
  background: #f5f8ff;
}
.strip-blue .strip-icon {
  color: var(--blue);
  background: #e3edff;
}
.strip-teal {
  border-color: #d2ebe6;
  background: #f2faf8;
}
.strip-teal .strip-icon {
  color: #268f7d;
  background: #dff4ef;
}
.strip-arrow {
  width: 18px;
  height: 18px;
  flex: 0 0 18px;
  color: #aebeca;
}

.section {
  padding: 120px max(6vw, 40px);
}
.section-heading {
  display: grid;
  max-width: 1180px;
  margin: 0 auto 60px;
  grid-template-columns: minmax(0, 1.45fr) minmax(280px, 0.55fr);
  grid-template-rows: auto auto;
  align-items: end;
  column-gap: 80px;
  row-gap: 18px;
}
.section-heading > div:first-child {
  display: flex;
  grid-column: 1;
  grid-row: 1;
  align-items: center;
  gap: 12px;
}
.section-heading > div:first-child::after {
  width: 42px;
  height: 1px;
  background: linear-gradient(90deg, var(--blue), rgba(57, 115, 230, 0.12));
  content: '';
}
.section-heading > h2 {
  grid-column: 1;
  grid-row: 2;
}
.section-heading > p {
  max-width: 340px;
  padding-bottom: 7px;
  grid-column: 2;
  grid-row: 2;
}
.role-label {
  display: flex;
  padding: 10px 13px 10px 10px;
  align-items: center;
  gap: 10px;
  border: 1px solid #d8e5f7;
  border-radius: 15px;
  background: rgba(237, 244, 255, 0.78);
  box-shadow: 0 8px 24px rgba(38, 79, 121, 0.06);
}
.role-label .kicker {
  font-size: 22px;
  font-weight: 750;
  letter-spacing: 0.03em;
}
.role-label-icon {
  display: grid;
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  place-items: center;
  border-radius: 11px;
  color: var(--blue);
  background: white;
  box-shadow: 0 5px 14px rgba(39, 83, 127, 0.08);
}
.role-label-icon .library-icon {
  width: 19px;
  height: 19px;
}
.student-section .role-label {
  border-color: #cee9e3;
  background: rgba(232, 247, 244, 0.82);
}
.student-section .role-label-icon,
.student-section .role-label .kicker {
  color: #278d7c;
}
.section-index {
  color: #98a9b7;
  font-family: Georgia, serif;
  font-size: 13px;
  font-style: italic;
}
.kicker {
  margin: 0;
  color: var(--blue);
  font-size: 12px;
  font-weight: 730;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.section-heading h2,
.role-intro h2 {
  margin: 0;
  color: var(--navy);
  font-size: clamp(38px, 4vw, 58px);
  font-weight: 620;
  letter-spacing: -0.055em;
  line-height: 1.2;
  text-wrap: balance;
}
.section-heading > p,
.role-intro > .role-summary {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
  text-wrap: pretty;
}
.overview {
  background: white;
}
.phase-grid {
  display: grid;
  max-width: 1180px;
  margin: auto;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.phase-card {
  position: relative;
  min-height: 385px;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfdff;
  overflow: hidden;
  transition: 0.35s ease;
}
.phase-card::after {
  position: absolute;
  right: -70px;
  bottom: -70px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: rgba(57, 115, 230, 0.05);
  content: '';
  transition: 0.4s;
}
.phase-card:hover {
  transform: translateY(-8px);
  border-color: #bfd1e0;
  box-shadow: var(--shadow);
}
.phase-card:hover::after {
  transform: scale(1.4);
}
.phase-card.featured {
  color: white;
  border-color: transparent;
  background: var(--navy);
  box-shadow: 0 25px 60px rgba(16, 45, 76, 0.18);
}
.phase-card.featured::after {
  background: rgba(80, 137, 199, 0.16);
}
.phase-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.phase-top span {
  color: #96a8b7;
  font-size: 9px;
  font-weight: 720;
  letter-spacing: 0.17em;
}
.phase-top b {
  color: #a6b6c3;
  font-family: Georgia, serif;
  font-size: 12px;
  font-style: italic;
}
.featured .phase-top span,
.featured .phase-top b {
  color: rgba(255, 255, 255, 0.48);
}
.phase-icon {
  position: relative;
  display: grid;
  width: 74px;
  height: 74px;
  margin: 10px 0 31px;
  place-items: center;
  border: 1px solid #dbe6ee;
  border-radius: 21px;
  color: var(--blue);
  background: white;
  box-shadow: 0 10px 30px rgba(28, 67, 98, 0.08);
}
.phase-icon > .library-icon {
  width: 31px;
  height: 31px;
}
.featured .phase-icon {
  border-color: rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: none;
}
.featured .phase-icon > .library-icon {
  color: #71d1c1;
}
.phase-card h3 {
  margin: 0 0 13px;
  color: var(--navy);
  font-size: 27px;
  font-weight: 650;
  letter-spacing: -0.03em;
}
.phase-card.featured h3 {
  color: white;
}
.phase-card > p {
  min-height: 70px;
  margin: 0 0 20px;
  color: #718597;
  font-size: 13px;
  line-height: 1.75;
}
.phase-card.featured > p {
  color: rgba(255, 255, 255, 0.6);
}
.phase-card ul {
  display: flex;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
  gap: 7px;
  list-style: none;
}
.phase-card li {
  padding: 6px 9px;
  border-radius: 6px;
  color: #5a7186;
  background: #edf3f7;
  font-size: 10px;
}
.phase-card.featured li {
  color: #a9dcd4;
  background: rgba(66, 184, 165, 0.13);
}

.teacher-section {
  background: var(--paper);
}
.role-intro {
  display: grid;
  max-width: 1180px;
  margin: 0 auto 90px;
  grid-template-columns: 0.3fr 1.35fr 0.65fr;
  align-items: end;
  gap: 45px;
}
.role-note {
  justify-self: end;
  padding-left: 20px;
  border-left: 1px solid #ccd9e3;
}
.role-note span {
  color: #9aabb8;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.14em;
}
.role-note p {
  margin: 9px 0 0;
  color: #516a7f;
  font-size: 12px;
  line-height: 1.7;
}
.feature-row {
  display: grid;
  max-width: 1180px;
  margin: 0 auto 115px;
  grid-template-columns: 0.8fr 1.2fr;
  align-items: center;
  gap: 7vw;
}
.feature-row.reverse {
  grid-template-columns: 1.2fr 0.8fr;
}
.feature-row.reverse .feature-copy {
  order: 2;
}
.feature-row.reverse .video-shell {
  order: 1;
}
.teacher-section > .feature-row:last-child {
  margin-bottom: 0;
}
.step-tag {
  display: inline-block;
  margin-bottom: 20px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
}
.step-tag.light {
  color: #7dd7c8;
}
.feature-copy h3 {
  margin: 0 0 20px;
  color: var(--navy);
  font-size: clamp(32px, 3vw, 45px);
  font-weight: 620;
  letter-spacing: -0.05em;
  line-height: 1.25;
  text-wrap: balance;
}
.feature-copy > p {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
  text-wrap: pretty;
}
.feature-points {
  margin-top: 31px;
  border-top: 1px solid var(--line);
}
.feature-points > div {
  display: flex;
  padding: 14px 0;
  align-items: center;
  gap: 14px;
  border-bottom: 1px solid var(--line);
}
.feature-points > div > span {
  color: #9baebb;
  font-family: Georgia, serif;
  font-size: 11px;
  font-style: italic;
}
.feature-points p {
  display: flex;
  margin: 0;
  flex-direction: column;
  gap: 3px;
  color: #405a70;
  font-size: 12px;
}
.feature-points small {
  color: #8b9aa7;
  font-size: 10px;
}
.video-shell {
  position: relative;
  padding: 8px;
  border: 1px solid #d8e4ec;
  border-radius: 23px;
  background: white;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.video-caption {
  display: flex;
  height: 44px;
  padding: 0 12px;
  align-items: center;
}
.video-caption p {
  margin: 0;
  color: #536b7e;
  font-size: 11px;
  font-weight: 620;
}
.video-frame {
  position: relative;
  aspect-ratio: 8/5;
  border-radius: 17px;
  background: #dfe9ee;
  overflow: hidden;
}
.video-frame video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  background: #e7eef2;
}
.video-frame::after {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 35, 58, 0.18), transparent 50%);
  content: '';
  pointer-events: none;
  transition: 0.3s;
}
.video-frame.is-playing::after {
  opacity: 0;
}
.video-play {
  position: absolute;
  z-index: 2;
  inset: 0;
  display: flex;
  border: 0;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: white;
  background: rgba(12, 38, 60, 0.13);
  cursor: pointer;
  transition: 0.3s;
}
.video-play span {
  display: grid;
  width: 53px;
  height: 53px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.23);
  box-shadow: 0 10px 30px rgba(8, 31, 51, 0.18);
  backdrop-filter: blur(10px);
  transition: 0.25s;
}
.video-play span .library-icon {
  width: 18px;
  height: 18px;
  margin-left: 2px;
}
.video-play:hover {
  background: rgba(12, 38, 60, 0.22);
}
.video-play:hover span {
  transform: scale(1.08);
}
.video-frame.is-playing .video-play {
  opacity: 0;
  pointer-events: none;
}
.strategy-list {
  display: flex;
  margin-top: 31px;
  flex-direction: column;
  gap: 11px;
}
.strategy-list span {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #50697d;
  font-size: 12px;
}
.strategy-list .strategy-icon {
  display: grid;
  width: 27px;
  height: 27px;
  place-items: center;
  border-radius: 8px;
  color: var(--blue);
  background: var(--soft-blue);
  font-style: normal;
}
.strategy-icon .library-icon {
  width: 14px;
  height: 14px;
}
.live-feature {
  display: grid;
  max-width: 1180px;
  margin: 0 auto 115px;
  padding: 58px;
  grid-template-columns: 0.8fr 1.2fr;
  align-items: center;
  gap: 7vw;
  border-radius: 32px;
  color: white;
  background: var(--navy);
  box-shadow: 0 30px 80px rgba(16, 45, 76, 0.18);
  overflow: hidden;
  position: relative;
}
.live-feature::before {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 90% 10%, rgba(66, 184, 165, 0.18), transparent 37%), linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size:
    auto,
    32px 32px,
    32px 32px;
  content: '';
}
.live-copy,
.live-dashboard {
  position: relative;
  z-index: 1;
}
.live-copy h3 {
  margin: 0 0 20px;
  font-size: clamp(30px, 3vw, 43px);
  font-weight: 580;
  letter-spacing: -0.05em;
  line-height: 1.25;
  text-wrap: balance;
}
.live-copy p {
  margin: 0;
  color: rgba(255, 255, 255, 0.58);
  font-size: 13px;
  line-height: 1.9;
  text-wrap: pretty;
}
.live-dashboard {
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 19px;
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(10px);
}
.dash-head {
  display: flex;
  padding-bottom: 15px;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 9px;
}
.dash-head span {
  display: flex;
  align-items: center;
  gap: 7px;
  color: rgba(255, 255, 255, 0.72);
}
.dash-head i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 4px rgba(66, 184, 165, 0.12);
}
.dash-head small {
  color: rgba(255, 255, 255, 0.35);
  font-variant-numeric: tabular-nums;
}
.dash-grid {
  display: grid;
  padding-top: 22px;
  grid-template-columns: repeat(3, 1fr);
  gap: 11px;
}
.dash-grid > div {
  display: flex;
  min-width: 0;
  height: 125px;
  padding: 15px;
  flex-direction: column;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.04);
}
.dash-grid small {
  color: rgba(255, 255, 255, 0.42);
  font-size: 8px;
}
.dash-grid strong {
  margin-top: 8px;
  font-size: 28px;
  font-weight: 520;
}
.dash-grid sup {
  font-size: 10px;
}
.bars {
  display: flex;
  height: 27px;
  margin-top: auto;
  align-items: end;
  gap: 3px;
}
.bars i {
  width: 8px;
  border-radius: 2px 2px 0 0;
  background: #55b8a8;
}
.bars i:nth-child(1) {
  height: 35%;
}
.bars i:nth-child(2) {
  height: 60%;
}
.bars i:nth-child(3) {
  height: 48%;
}
.bars i:nth-child(4) {
  height: 80%;
}
.bars i:nth-child(5) {
  height: 67%;
}
.bars i:nth-child(6) {
  height: 95%;
}
.bars i:nth-child(7) {
  height: 74%;
}
.dash-progress {
  height: 4px;
  margin-top: auto;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
}
.dash-progress i {
  display: block;
  width: 76%;
  height: 100%;
  background: linear-gradient(90deg, var(--blue), var(--teal));
}
.branches {
  position: relative;
  height: 27px;
  margin-top: auto;
}
.branches::before {
  position: absolute;
  left: 0;
  top: 13px;
  width: 100%;
  height: 1px;
  background: rgba(255, 255, 255, 0.16);
  content: '';
}
.branches i {
  position: absolute;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--teal);
  box-shadow: 0 0 0 3px rgba(66, 184, 165, 0.1);
}
.branches i:nth-child(1) {
  left: 5%;
}
.branches i:nth-child(2) {
  left: 47%;
}
.branches i:nth-child(3) {
  right: 5%;
}
.review-preview {
  display: flex;
  min-height: 0;
  padding: 15px;
  flex-direction: column;
  border: 1px solid #d8e5ef;
  border-radius: 20px;
  background: linear-gradient(145deg, #fbfdff, #f1f6fb);
  box-shadow: 0 12px 34px rgba(31, 69, 101, 0.07);
}
.review-preview-head {
  display: flex;
  margin-bottom: 11px;
  padding: 0 2px;
  align-items: center;
  justify-content: space-between;
}
.review-preview-head > span {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--navy);
  font-size: 14px;
  font-weight: 700;
}
.review-preview-head .library-icon {
  width: 17px;
  height: 17px;
  color: var(--blue);
}
.review-preview-head > small {
  color: #8497a7;
  font-size: 11px;
}
.review-stat-grid {
  display: grid;
  flex: 1;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.review-stat {
  display: flex;
  min-width: 0;
  padding: 13px 14px;
  flex-direction: column;
  justify-content: center;
  border: 1px solid rgba(218, 230, 239, 0.9);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.76);
}
.review-stat:first-child {
  padding-left: 14px;
}
.review-stat:last-child {
  padding-right: 14px;
}
.review-stat span {
  display: block;
  color: #718697;
  font-size: 11px;
  line-height: 1.2;
  white-space: nowrap;
}
.review-stat b {
  display: block;
  margin-top: 7px;
  color: var(--blue);
  font-size: 27px;
  font-weight: 680;
  line-height: 1;
}
.review-stat:nth-child(-n + 2) {
  background: rgba(245, 249, 255, 0.92);
}
.review-stat:nth-child(n + 3) {
  border-color: rgba(207, 233, 227, 0.9);
  background: rgba(242, 250, 248, 0.92);
}
.review-stat:nth-child(n + 3) b {
  color: #278d7c;
}

.post-class-panel {
  max-width: 1180px;
  margin: 0 auto;
  padding: 44px;
  border: 1px solid #d8e4ec;
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 55px rgba(28, 67, 98, 0.08);
}
.post-class-top {
  display: grid;
  padding-bottom: 38px;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: stretch;
  gap: clamp(36px, 4vw, 58px);
  border-bottom: 1px solid var(--line);
}
.post-class-copy h3 {
  margin: 0 0 18px;
  color: var(--navy);
  font-size: clamp(32px, 3vw, 45px);
  font-weight: 620;
  letter-spacing: -0.05em;
  line-height: 1.25;
  text-wrap: balance;
}
.post-class-copy > p {
  max-width: 610px;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.9;
  text-wrap: pretty;
}
.post-class-top .review-preview {
  margin: 0;
}
.post-class-grid {
  display: grid;
  padding-top: 30px;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.post-class-grid article {
  padding: 22px;
  border: 1px solid #e1eaf0;
  border-radius: 17px;
  background: #f8fbfd;
}
.post-class-grid article > span {
  display: grid;
  width: 38px;
  height: 38px;
  margin-bottom: 19px;
  place-items: center;
  border-radius: 11px;
  color: var(--blue);
  background: var(--soft-blue);
}
.post-class-grid article:nth-child(2) > span {
  color: #aa7427;
  background: #fff0d7;
}
.post-class-grid article:nth-child(3) > span {
  color: #268f7d;
  background: var(--soft-teal);
}
.post-class-grid article > span .library-icon {
  width: 18px;
  height: 18px;
}
.post-class-grid h4 {
  margin: 0 0 9px;
  color: var(--navy);
  font-size: 16px;
  font-weight: 650;
}
.post-class-grid p {
  margin: 0;
  color: #718597;
  font-size: 12px;
  line-height: 1.75;
}

.student-section {
  position: relative;
  background: #eef5fa;
  overflow: hidden;
}
.student-bg-grid {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(#adc2d2 1px, transparent 1px);
  background-size: 28px 28px;
  opacity: 0.2;
  mask-image: linear-gradient(to bottom, black, transparent 70%);
}
.student-section > *:not(.student-bg-grid) {
  position: relative;
}
.student-features {
  display: grid;
  max-width: 1180px;
  margin: auto;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.student-card {
  padding: 35px 12px 12px;
  border: 1px solid rgba(203, 219, 230, 0.9);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 50px rgba(31, 70, 101, 0.08);
  overflow: hidden;
}
.student-card-copy {
  padding: 0 23px 25px;
}
.card-number {
  display: block;
  margin-bottom: 30px;
  color: var(--teal);
  font-size: 9px;
  font-weight: 760;
  letter-spacing: 0.15em;
}
.student-card h3 {
  margin: 0 0 14px;
  color: var(--navy);
  font-size: 27px;
  font-weight: 630;
  letter-spacing: -0.04em;
}
.student-card-copy > p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.85;
}
.video-shell.compact {
  border: 0;
  border-top: 1px solid #dce7ee;
  border-radius: 19px;
  box-shadow: none;
}
.compact .video-frame {
  border-radius: 14px;
}

.workflow {
  background: white;
}
.section-heading.centered {
  display: flex;
  max-width: 750px;
  margin-bottom: 40px;
  flex-direction: column;
  align-items: center;
  gap: 15px;
  text-align: center;
}
.section-heading.centered > div {
  justify-content: center;
}
.section-heading.centered > div::after {
  display: none;
}
.section-heading.centered > p {
  max-width: 520px;
  padding-bottom: 0;
}
.orbit-wrap {
  position: relative;
  max-width: 1100px;
  height: 540px;
  margin: auto;
  border: 1px solid rgba(220, 231, 239, 0.8);
  border-radius: 34px;
  background:
    radial-gradient(circle at 50% 50%, rgba(57, 115, 230, 0.07), transparent 28%),
    linear-gradient(145deg, #ffffff, #f9fbfd);
  box-shadow: 0 24px 70px rgba(31, 69, 101, 0.08);
  overflow: hidden;
}
.orbit-wrap::before {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image: radial-gradient(#c5d4df 1px, transparent 1px);
  background-size: 20px 20px;
  content: '';
  mask-image: radial-gradient(circle, black, transparent 70%);
}
.orbit-track {
  position: absolute;
  inset: 20px 45px;
  width: calc(100% - 90px);
  height: calc(100% - 40px);
  overflow: visible;
}
.orbit-track > path {
  fill: none;
  marker-end: url(#orbitArrow);
  stroke: url(#orbitGradient);
  stroke-dasharray: 6 10;
  stroke-linecap: round;
  stroke-width: 2;
  opacity: 0.72;
  animation: march 16s linear infinite;
}
.orbit-track marker path {
  fill: #54a9b2;
}
.orbit-core {
  position: absolute;
  z-index: 2;
  top: 50%;
  left: 50%;
  display: flex;
  width: 240px;
  height: 134px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  border: 1px solid #d5e3ed;
  border-radius: 67px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 22px 55px rgba(31, 73, 107, 0.12);
  transform: translate(-50%, -50%);
}
.brand-mark.mini {
  width: 32px;
  height: 32px;
  margin-bottom: 12px;
}
.orbit-core strong {
  color: var(--navy);
  font-size: 17px;
}
.orbit-core small {
  margin-top: 5px;
  color: #8195a5;
  font-size: 11px;
}
.orbit-step {
  position: absolute;
  z-index: 3;
  display: flex;
  min-width: 190px;
  padding: 10px 16px 10px 10px;
  align-items: center;
  gap: 12px;
  border: 1px solid #dbe6ee;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 12px 32px rgba(35, 72, 102, 0.1);
}
.orbit-step > span {
  display: grid;
  width: 48px;
  height: 48px;
  flex: 0 0 48px;
  place-items: center;
  border-radius: 50%;
  color: var(--blue);
  background: var(--soft-blue);
}
.orbit-step > span .library-icon {
  width: 21px;
  height: 21px;
}
.orbit-step > div {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: baseline;
  column-gap: 7px;
}
.orbit-step b {
  color: var(--blue);
  font-size: 10px;
  font-weight: 750;
}
.orbit-step h3 {
  margin: 0;
  color: var(--navy);
  font-size: 19px;
  font-weight: 680;
}
.orbit-step p {
  margin: 3px 0 0;
  grid-column: 1 / -1;
  color: #778b9b;
  font-size: 10px;
}
.orbit-class > span {
  color: #278d7c;
  background: var(--soft-teal);
}
.orbit-class b {
  color: #278d7c;
}
.orbit-review > span {
  color: #a46d22;
  background: #fff1d8;
}
.orbit-review b {
  color: #a46d22;
}
.orbit-iterate > span {
  color: #755cb2;
  background: #f0ebfb;
}
.orbit-iterate b {
  color: #755cb2;
}
.orbit-prep {
  top: 20px;
  left: 50%;
  transform: translateX(-50%);
}
.orbit-class {
  top: 50%;
  right: 28px;
  transform: translateY(-50%);
}
.orbit-review {
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
}
.orbit-iterate {
  top: 50%;
  left: 28px;
  transform: translateY(-50%);
}

.closing {
  position: relative;
  padding: 90px max(6vw, 40px) 64px;
  color: white;
  background: var(--navy);
  overflow: hidden;
}
.closing-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px);
  background-size: 45px 45px;
  mask-image: linear-gradient(90deg, black, transparent 75%);
}
.closing-orb {
  position: absolute;
  right: -150px;
  top: -200px;
  width: 700px;
  height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(57, 115, 230, 0.4), transparent 65%);
}
.closing-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
}
.closing-kicker {
  display: block;
  margin-bottom: 26px;
  color: #78d1c2;
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.18em;
}
.closing h2 {
  margin: 0;
  font-size: clamp(47px, 6vw, 78px);
  font-weight: 570;
  letter-spacing: -0.06em;
  line-height: 1.13;
  text-wrap: balance;
}
.closing h2 em {
  color: #78d1c2;
}
.closing p {
  max-width: 760px;
  margin: 28px 0 0;
  color: rgba(255, 255, 255, 0.59);
  font-size: 15px;
  line-height: 1.9;
  text-wrap: pretty;
  white-space: nowrap;
}
.closing-mark {
  position: absolute;
  right: 40px;
  bottom: 22px;
  color: rgba(255, 255, 255, 0.035);
  font-size: clamp(104px, 10vw, 148px);
  font-weight: 800;
  letter-spacing: -0.08em;
  line-height: 1;
  white-space: nowrap;
}
.closing-mark span {
  color: rgba(66, 184, 165, 0.07);
}
footer {
  display: flex;
  padding: 34px max(6vw, 40px);
  align-items: center;
  gap: 35px;
  color: #798d9e;
  background: #f8fbfd;
  font-size: 10px;
}
footer p {
  margin: 0 auto 0 0;
}
footer > .brand {
  color: var(--ink);
  font-size: 14px;
}
footer .brand-mark {
  width: 22px;
  height: 22px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.8s ease,
    transform 0.8s cubic-bezier(0.2, 0.65, 0.25, 1);
}
.reveal.is-visible {
  opacity: 1;
  transform: none;
}
.delay-1 {
  transition-delay: 0.1s;
}
.delay-2 {
  transition-delay: 0.2s;
}
.delay-3 {
  transition-delay: 0.3s;
}
.delay-4 {
  transition-delay: 0.4s;
}

@media (max-width: 1180px) {
  .feature-float {
    display: none;
  }
  .header-partners {
    margin-left: 18px;
    gap: 10px;
  }
  .header-partners .school-logo {
    height: 26px;
  }
  .header-partners .lab-logo {
    height: 26px;
  }
  .desktop-nav {
    gap: 20px;
  }
  .hero {
    min-height: auto;
    padding-top: 145px;
    grid-template-columns: 1fr;
  }
  .hero-copy {
    max-width: 780px;
  }
  .hero-visual {
    width: min(850px, 95%);
    min-width: 0;
    margin: 35px auto 40px;
  }
  .section-heading {
    grid-template-columns: minmax(0, 1.4fr) minmax(250px, 0.6fr);
    column-gap: 48px;
    row-gap: 16px;
  }
  .role-intro {
    grid-template-columns: 0.28fr 1.35fr 0.65fr;
    gap: 32px;
  }
  .feature-row {
    gap: 5vw;
  }
  .closing-mark {
    right: 24px;
    font-size: 120px;
  }
}
@media (max-width: 1000px) {
  .post-class-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .post-class-top .review-preview {
    width: 100%;
    max-width: 560px;
  }
}
@media (max-width: 860px) {
  .site-header {
    width: calc(100% - 24px);
  }
  .desktop-nav {
    display: none;
  }
  .closing p {
    white-space: normal;
  }
  .menu-button {
    display: block;
  }
  .site-header.menu-open {
    height: auto;
    padding-top: 12px;
    flex-wrap: wrap;
  }
  .site-header.menu-open .desktop-nav {
    display: flex;
    width: 100%;
    padding: 16px 4px 18px;
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
  .site-header.menu-open .menu-button span:first-child {
    transform: translateY(3.5px) rotate(45deg);
  }
  .site-header.menu-open .menu-button span:last-child {
    transform: translateY(-3.5px) rotate(-45deg);
  }
  .hero {
    padding-right: 24px;
    padding-left: 24px;
  }
  .hero h1 {
    font-size: clamp(48px, 10vw, 68px);
  }
  .app-layout {
    grid-template-columns: 1fr;
    grid-template-rows: 72px minmax(0, 1fr);
  }
  .metric-panel {
    display: none;
  }
  .hero-visual {
    width: 100%;
  }
  .section {
    padding: 90px 24px;
  }
  .section-heading,
  .role-intro {
    display: flex;
    margin-bottom: 52px;
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
  }
  .role-note {
    display: none;
  }
  .phase-grid {
    grid-template-columns: 1fr;
  }
  .phase-card {
    min-height: 340px;
  }
  .phase-icon {
    margin: 20px 0 25px;
  }
  .phase-card > p {
    min-height: auto;
  }
  .feature-row,
  .feature-row.reverse {
    margin-bottom: 85px;
    grid-template-columns: 1fr;
    gap: 38px;
  }
  .feature-row.reverse .feature-copy,
  .feature-row.reverse .video-shell {
    order: initial;
  }
  .feature-copy {
    max-width: 600px;
  }
  .live-feature {
    margin-bottom: 85px;
    padding: 42px 30px;
    grid-template-columns: 1fr;
    gap: 38px;
  }
  .post-class-panel {
    padding: 30px;
  }
  .post-class-top {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .post-class-grid {
    grid-template-columns: 1fr;
  }
  .student-features {
    grid-template-columns: 1fr;
  }
  .student-card-copy {
    min-height: auto;
    padding-bottom: 25px;
  }
  .orbit-wrap {
    height: 560px;
  }
  .orbit-track {
    inset: 25px 20px;
    width: calc(100% - 40px);
    height: calc(100% - 50px);
  }
  .orbit-core {
    width: 205px;
    height: 118px;
  }
  .orbit-step {
    min-width: 170px;
  }
  .orbit-class {
    right: 14px;
  }
  .orbit-iterate {
    left: 14px;
  }
  .closing-mark {
    right: 24px;
    bottom: 24px;
    font-size: 90px;
  }
}
@media (max-width: 560px) {
  .site-header {
    top: 8px;
    height: 100px;
    padding: 8px 12px;
    align-content: center;
    flex-wrap: wrap;
  }
  .brand {
    order: 1;
  }
  .menu-button {
    order: 2;
  }
  .header-partners {
    order: 3;
    width: 100%;
    height: 32px;
    margin: 4px 0 0;
    padding-top: 5px;
    justify-content: center;
    border-top: 1px solid rgba(220, 230, 237, 0.85);
  }
  .header-partners .school-logo {
    height: 24px;
  }
  .header-partners .lab-logo {
    height: 24px;
  }
  .header-partners > i {
    height: 19px;
  }
  .desktop-nav {
    order: 4;
  }
  .brand {
    font-size: 16px;
  }
  .brand-mark {
    width: 25px;
    height: 25px;
  }
  .hero {
    padding-top: 165px;
  }
  .hero h1 {
    font-size: 46px;
  }
  .hero-lead {
    font-size: 15px;
  }
  .hero-actions {
    align-items: stretch;
    flex-direction: column;
  }
  .hero-stats {
    gap: 17px;
  }
  .hero-stats strong {
    font-size: 21px;
  }
  .hero-stats span {
    font-size: 9px;
  }
  .hero-visual {
    margin-top: 20px;
  }
  .window-topbar {
    height: 40px;
  }
  .app-layout {
    min-height: 350px;
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
  }
  .agent-list {
    display: none;
  }
  .knowledge-map {
    padding: 16px;
    grid-row: 1;
  }
  .network {
    height: 280px;
  }
  .problem-strip {
    margin-top: -18px;
    padding: 20px;
    gap: 9px;
  }
  .problem-strip p,
  .strip-arrow {
    display: none;
  }
  .section {
    padding: 72px 18px;
  }
  .section-heading h2,
  .role-intro h2 {
    font-size: 36px;
  }
  .role-label .kicker {
    font-size: 18px;
  }
  .role-label {
    padding: 8px 11px 8px 8px;
  }
  .role-label-icon {
    width: 32px;
    height: 32px;
    flex-basis: 32px;
  }
  .section-heading h2 br,
  .role-intro h2 br,
  .feature-copy h3 br,
  .live-copy h3 br,
  .closing h2 br {
    display: none;
  }
  .phase-card {
    padding: 23px;
  }
  .feature-copy h3 {
    font-size: 31px;
  }
  .video-shell {
    padding: 6px;
    border-radius: 18px;
  }
  .video-caption {
    height: 43px;
  }
  .video-caption p {
    font-size: 9px;
  }
  .video-frame {
    border-radius: 13px;
  }
  .live-feature {
    padding: 32px 19px;
    border-radius: 23px;
  }
  .dash-grid {
    grid-template-columns: 1fr 1fr;
  }
  .dash-grid > div:last-child {
    display: none;
  }
  .student-card {
    border-radius: 22px;
  }
  .student-card h3 {
    font-size: 23px;
    text-wrap: balance;
  }
  .orbit-wrap {
    height: 500px;
    border-radius: 24px;
  }
  .orbit-track {
    inset: 15px 5px;
    width: calc(100% - 10px);
    height: calc(100% - 30px);
  }
  .orbit-core {
    width: 138px;
    height: 92px;
  }
  .orbit-core .brand-mark {
    width: 24px;
    height: 24px;
    margin-bottom: 8px;
  }
  .orbit-core strong {
    font-size: 14px;
  }
  .orbit-core small {
    font-size: 9px;
  }
  .orbit-step {
    min-width: 0;
    width: 122px;
    padding: 7px 9px 7px 7px;
    gap: 7px;
  }
  .orbit-step > span {
    width: 36px;
    height: 36px;
    flex-basis: 36px;
  }
  .orbit-step > span .library-icon {
    width: 17px;
    height: 17px;
  }
  .orbit-step b,
  .orbit-step p {
    display: none;
  }
  .orbit-step h3 {
    font-size: 16px;
  }
  .orbit-prep {
    top: 16px;
  }
  .orbit-review {
    bottom: 16px;
  }
  .orbit-class {
    right: 5px;
  }
  .orbit-iterate {
    left: 5px;
  }
  .closing {
    padding: 68px 22px 56px;
  }
  .closing h2 {
    font-size: 42px;
  }
  .closing-mark {
    display: none;
  }
  footer {
    align-items: flex-start;
    flex-direction: column;
    gap: 13px;
  }
  footer p {
    line-height: 1.6;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .node circle,
  .net-lines path,
  .pulse-dot::after {
    animation: none;
  }
}

@media (max-width: 560px) {
  .problem-strip {
    margin-top: -18px;
    padding: 10px;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  .problem-strip .strip-item {
    min-height: 54px;
    padding: 9px 12px;
    justify-content: flex-start;
  }
  .strip-icon {
    width: 32px;
    height: 32px;
    flex-basis: 32px;
  }
  .strip-icon .library-icon {
    width: 15px;
    height: 15px;
  }
  .post-class-panel {
    padding: 25px 18px;
    border-radius: 22px;
  }
  .post-class-top {
    padding-bottom: 26px;
    gap: 24px;
  }
  .post-class-copy h3 {
    font-size: 31px;
  }
  .post-class-grid {
    padding-top: 22px;
    gap: 10px;
  }
  .post-class-grid article {
    padding: 18px;
  }
}