.app-tutorial-page {
  --at-night: #071923;
  --at-night-soft: #0d2632;
  --at-ink: #102029;
  --at-paper: #f3f6f2;
  --at-white: #fff;
  --at-mint: #42dfc2;
  --at-mint-deep: #12a98f;
  --at-lime: #d8ff4f;
  --at-blue: #2b6fff;
  --at-orange: #ff7448;
  --at-muted: #66737a;
  --at-line: #d5ddd9;
  background: var(--at-paper);
  color: var(--at-ink);
}

.app-tutorial-page main {
  overflow: hidden;
}

.app-tutorial-page .site-header {
  position: relative;
  z-index: 50;
}

.app-tutorial-page h1,
.app-tutorial-page h2,
.app-tutorial-page h3,
.app-tutorial-page p,
.app-tutorial-page figure {
  margin-top: 0;
}

.app-tutorial-page button,
.app-tutorial-page a {
  -webkit-tap-highlight-color: transparent;
}

.at-hero {
  display: grid;
  min-height: 760px;
  overflow: hidden;
  background:
    radial-gradient(circle at 14% 12%, rgb(66 223 194 / 12%), transparent 30%),
    linear-gradient(135deg, #071923 0%, #071923 64%, #0a202b 100%);
  color: var(--at-white);
  grid-template-columns: minmax(0, 0.92fr) minmax(520px, 1.08fr);
}

.at-hero-copy {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  flex-direction: column;
  padding: clamp(70px, 7vw, 116px) clamp(32px, 5.6vw, 92px);
}

.at-eyebrow,
.at-section-heading > p:first-child,
.at-section-heading > div > p:first-child,
.at-promo-lead > p,
.at-final-cta > p:first-child {
  margin-bottom: 20px;
  color: var(--at-mint-deep);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.at-hero .at-eyebrow {
  color: var(--at-mint);
}

.at-hero h1 {
  max-width: 680px;
  margin-bottom: 0;
  font-size: clamp(52px, 5.25vw, 82px);
  font-weight: 900;
  letter-spacing: -0.065em;
  line-height: 1.1;
}

.at-hero h1 span,
.at-section-heading h2 span,
.at-final-cta h2 span {
  display: block;
}

.at-section-heading h2 span,
.at-final-cta h2 span {
  color: var(--at-mint-deep);
}

.at-hero h1 span {
  color: var(--at-white);
  white-space: nowrap;
}

.at-hero h1 .at-hero-title-accent {
  color: var(--at-lime);
  font-size: 0.72em;
  letter-spacing: -0.055em;
}

.at-hero-intro {
  max-width: 660px;
  margin: 32px 0 0;
  color: #c9d3d6;
  font-size: 17px;
  line-height: 1.88;
}

.at-hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  margin-top: 36px;
  gap: 13px;
}

.at-button,
.at-final-cta a,
.at-dialog-copy a {
  display: inline-flex;
  min-height: 54px;
  align-items: center;
  justify-content: center;
  padding: 14px 23px;
  gap: 10px;
  font-size: 14px;
  font-weight: 850;
  transition: border-color 180ms ease, background 180ms ease, color 180ms ease, transform 180ms ease;
}

.at-button-primary {
  background: var(--at-lime);
  color: var(--at-night);
}

.at-button-secondary {
  border: 1px solid #49606b;
  color: var(--at-white);
}

.at-button:hover,
.at-button:focus-visible,
.at-final-cta a:hover,
.at-final-cta a:focus-visible,
.at-dialog-copy a:hover,
.at-dialog-copy a:focus-visible {
  transform: translateY(-2px);
}

.at-button-primary:hover,
.at-button-primary:focus-visible {
  background: #ebff99;
}

.at-button-secondary:hover,
.at-button-secondary:focus-visible {
  border-color: var(--at-mint);
  color: var(--at-mint);
}

.at-hero-note {
  max-width: 590px;
  margin: 20px 0 0;
  color: #7f959e;
  font-size: 11px;
  line-height: 1.7;
}

.at-hero-visual {
  position: relative;
  min-width: 0;
  min-height: 760px;
  border-left: 1px solid rgb(255 255 255 / 8%);
  background:
    linear-gradient(rgb(255 255 255 / 4%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / 4%) 1px, transparent 1px),
    radial-gradient(circle at 55% 44%, rgb(66 223 194 / 20%), transparent 37%);
  background-size: 48px 48px, 48px 48px, auto;
  isolation: isolate;
}

.at-hero-visual::before {
  position: absolute;
  z-index: -1;
  width: 500px;
  height: 500px;
  border: 1px solid rgb(216 255 79 / 18%);
  border-radius: 50%;
  content: "";
  inset: 50% auto auto 48%;
  transform: translate(-50%, -50%);
}

.at-orbit {
  position: absolute;
  z-index: -1;
  border: 1px solid rgb(66 223 194 / 20%);
  border-radius: 50%;
  pointer-events: none;
}

.at-orbit-one {
  width: 360px;
  height: 360px;
  inset: 17% auto auto 12%;
}

.at-orbit-two {
  width: 630px;
  height: 630px;
  inset: 6% auto auto 17%;
}

.at-phone {
  position: absolute;
  overflow: hidden;
  border: 1px solid rgb(255 255 255 / 16%);
  background: #07151c;
  box-shadow: 0 32px 70px rgb(0 0 0 / 42%);
}

.at-phone-primary {
  width: min(350px, 43vw);
  height: 650px;
  border-width: 8px;
  border-color: #19313c;
  border-radius: 42px;
  inset: 55px auto auto 15%;
  transform: rotate(-5deg);
}

.at-phone-primary::before {
  position: absolute;
  z-index: 4;
  width: 104px;
  height: 22px;
  border-radius: 0 0 15px 15px;
  background: #19313c;
  content: "";
  inset: 0 auto auto 50%;
  transform: translateX(-50%);
}

.at-phone-bar {
  display: flex;
  height: 56px;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  color: #8fa2aa;
  font-size: 11px;
  letter-spacing: 0.16em;
}

.at-phone-bar > span {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--at-mint);
  box-shadow: 0 0 12px var(--at-mint);
}

.at-hero-preview {
  position: relative;
  isolation: isolate;
  display: block;
  width: 100%;
  height: 520px;
  padding: 0;
  overflow: hidden;
  border: 0;
  background: #102d38;
  color: var(--at-white);
  cursor: pointer;
  text-align: left;
}

.at-hero-preview video {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.at-preview-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, transparent 30%, rgb(3 13 18 / 86%) 100%);
}

.at-preview-play,
.at-case-play {
  position: absolute;
  display: grid;
  width: 58px;
  height: 58px;
  border: 1px solid rgb(255 255 255 / 64%);
  border-radius: 50%;
  background: rgb(7 25 35 / 58%);
  color: var(--at-white);
  inset: 50% auto auto 50%;
  place-items: center;
  transform: translate(-50%, -50%);
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.at-preview-play i,
.at-case-play i {
  transform: translateX(2px);
}

.at-hero-preview:hover .at-preview-play,
.at-hero-preview:focus-visible .at-preview-play,
.at-promo-case:hover .at-case-play,
.at-promo-case:focus-visible .at-case-play {
  border-color: var(--at-lime);
  background: var(--at-lime);
  color: var(--at-night);
  transform: translate(-50%, -50%) scale(1.08);
}

.at-preview-copy {
  position: absolute;
  display: grid;
  gap: 5px;
  inset: auto 25px 25px;
}

.at-preview-copy small {
  color: var(--at-mint);
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.at-preview-copy strong {
  font-size: 18px;
  line-height: 1.35;
}

.at-phone-dock {
  display: flex;
  height: 58px;
  align-items: center;
  justify-content: space-around;
  padding: 0 24px;
}

.at-phone-dock span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #34505a;
}

.at-phone-dock span:first-child {
  background: var(--at-lime);
  box-shadow: 0 0 12px rgb(216 255 79 / 60%);
}

.at-phone-secondary {
  width: 250px;
  height: 466px;
  padding: 22px;
  border-width: 7px;
  border-color: #1a323c;
  border-radius: 34px;
  inset: 178px 7% auto auto;
  transform: rotate(7deg);
}

.at-mini-status {
  display: flex;
  justify-content: space-between;
  color: #76909b;
  font-size: 8px;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.at-mini-status strong {
  color: var(--at-lime);
}

.at-mini-screen {
  position: relative;
  height: 320px;
  margin-top: 20px;
  overflow: hidden;
  border: 1px solid #23414d;
  background: #0b2530;
}

.at-mini-video {
  position: absolute;
  width: 100%;
  height: 100%;
  inset: 0;
  object-fit: cover;
}

.at-mini-video-shade {
  position: absolute;
  background: linear-gradient(180deg, transparent 46%, rgb(7 25 35 / 88%) 100%);
  inset: 0;
}

.at-mini-video-copy {
  position: absolute;
  display: grid;
  right: 14px;
  bottom: 16px;
  left: 14px;
  color: var(--at-white);
  gap: 4px;
  text-align: left;
}

.at-mini-video-copy small {
  color: var(--at-mint);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.at-mini-video-copy strong {
  font-size: 14px;
  line-height: 1.45;
}

.at-mini-progress {
  height: 4px;
  margin-top: 22px;
  overflow: hidden;
  border-radius: 4px;
  background: #1e3a45;
}

.at-mini-progress span {
  display: block;
  width: 58%;
  height: 100%;
  background: var(--at-mint);
}

.at-signal {
  position: absolute;
  display: grid;
  min-width: 210px;
  align-items: center;
  padding: 14px 18px;
  border: 1px solid rgb(255 255 255 / 14%);
  background: rgb(6 24 33 / 90%);
  box-shadow: 0 18px 34px rgb(0 0 0 / 24%);
  grid-template-columns: auto 1fr;
  gap: 12px;
  backdrop-filter: blur(10px);
}

.at-signal i {
  color: var(--at-lime);
  font-size: 24px;
}

.at-signal span {
  display: grid;
  gap: 3px;
}

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

.at-signal small {
  color: #80949c;
  font-size: 9px;
}

.at-signal-top {
  inset: 86px 6% auto auto;
}

.at-signal-bottom {
  inset: auto auto 54px 5%;
}

.at-outcome-strip {
  display: grid;
  min-height: 128px;
  margin: 0;
  padding: 0 var(--gutter);
  border-bottom: 1px solid var(--at-line);
  background: var(--at-white);
  grid-template-columns: repeat(4, minmax(0, 1fr));
  list-style: none;
}

.at-outcome-strip li {
  position: relative;
  display: grid;
  align-content: center;
  padding: 24px clamp(18px, 2vw, 34px) 24px 64px;
  gap: 4px;
}

.at-outcome-strip li + li {
  border-left: 1px solid var(--at-line);
}

.at-outcome-strip li > span {
  position: absolute;
  color: #a5b0ad;
  font-size: 9px;
  font-weight: 850;
  inset: 22px auto auto 22px;
}

.at-outcome-strip i {
  position: absolute;
  color: var(--at-mint-deep);
  font-size: 29px;
  inset: 52px auto auto 22px;
}

.at-outcome-strip strong {
  font-size: 14px;
}

.at-outcome-strip small {
  color: var(--at-muted);
  font-size: 10px;
  line-height: 1.5;
}

.at-promotion,
.at-tutorial-intro,
.at-tutorial-cases,
.at-workflow,
.at-promo-cases {
  padding: clamp(80px, 7vw, 118px) var(--gutter);
}

.at-promotion,
.at-tutorial-cases {
  background: var(--at-white);
}

.at-tutorial-intro {
  background: var(--at-paper);
}

.at-section-heading {
  max-width: 920px;
  margin-bottom: clamp(46px, 5vw, 74px);
}

.at-section-heading-split {
  display: grid;
  max-width: none;
  align-items: end;
  gap: 44px 9vw;
  grid-template-columns: minmax(0, 1.08fr) minmax(320px, 0.72fr);
}

.at-section-heading h2,
.at-final-cta h2 {
  margin-bottom: 0;
  font-size: clamp(39px, 4.3vw, 66px);
  font-weight: 900;
  letter-spacing: -0.06em;
  line-height: 1.14;
}

.at-section-heading > p:last-child,
.at-section-heading-split > p {
  margin-bottom: 3px;
  color: var(--at-muted);
  font-size: 15px;
  line-height: 1.9;
}

.at-promo-system {
  display: grid;
  min-height: 560px;
  border: 1px solid var(--at-line);
  grid-template-columns: minmax(320px, 0.72fr) minmax(0, 1.28fr);
}

.at-promo-lead {
  padding: clamp(34px, 4vw, 64px) clamp(28px, 3vw, 46px);
  border-right: 1px solid var(--at-line);
  background: var(--at-paper);
}

.at-promo-lead h3 {
  margin-bottom: 42px;
  font-size: clamp(25px, 1.85vw, 32px);
  font-weight: 900;
  letter-spacing: -0.045em;
  line-height: 1.3;
}

.at-promo-title-line {
  display: block;
  white-space: nowrap;
}

.at-promo-lead ol {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--at-line);
  list-style: none;
}

.at-promo-lead li {
  display: grid;
  align-items: center;
  padding: 20px 0;
  border-bottom: 1px solid var(--at-line);
  grid-template-columns: 44px 1fr;
}

.at-promo-lead li > span {
  color: var(--at-mint-deep);
  font-size: 11px;
  font-weight: 900;
}

.at-promo-lead li div {
  display: grid;
  gap: 4px;
}

.at-promo-lead li strong {
  font-size: 14px;
}

.at-promo-lead li small {
  color: var(--at-muted);
  font-size: 11px;
}

.at-channel-map {
  position: relative;
  display: grid;
  min-height: 560px;
  overflow: hidden;
  background:
    linear-gradient(rgb(11 55 64 / 8%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(11 55 64 / 8%) 1px, transparent 1px),
    var(--at-white);
  background-size: 44px 44px;
  place-items: center;
  animation: at-channel-grid-drift 18s linear infinite;
}

.at-channel-map::before,
.at-channel-map::after {
  position: absolute;
  border: 1px dashed #a5c5bd;
  border-radius: 50%;
  content: "";
  inset: 50% auto auto 50%;
  transform: translate(-50%, -50%);
}

.at-channel-map::before {
  width: 350px;
  height: 350px;
  border-color: #9fc8bd transparent;
  animation: at-channel-orbit-clockwise 15s linear infinite;
}

.at-channel-map::after {
  width: 510px;
  height: 510px;
  border-color: transparent #9fc8bd;
  animation: at-channel-orbit-counter 24s linear infinite;
}

.at-channel-center {
  position: relative;
  z-index: 2;
  display: flex;
  width: 190px;
  height: 190px;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--at-night);
  box-shadow: 0 22px 50px rgb(7 25 35 / 24%);
  color: var(--at-white);
  flex-direction: column;
  text-align: center;
  animation: at-channel-center-float 4.8s ease-in-out infinite;
}

.at-channel-center i {
  position: relative;
  display: grid;
  width: 40px;
  height: 40px;
  margin-bottom: 11px;
  border-radius: 50%;
  background: var(--at-lime);
  color: var(--at-night);
  place-items: center;
}

.at-channel-center i::after {
  position: absolute;
  border: 1px solid var(--at-lime);
  border-radius: 50%;
  content: "";
  inset: 0;
  animation: at-channel-play-ripple 2.4s ease-out infinite;
}

.at-channel-center strong {
  font-size: 16px;
  letter-spacing: 0.08em;
  line-height: 1.2;
}

.at-channel-center small {
  margin-top: 7px;
  color: #91a4ad;
  font-size: 9px;
}

.at-channel-map article {
  position: absolute;
  z-index: 2;
  display: grid;
  width: 150px;
  min-height: 116px;
  align-content: center;
  padding: 18px;
  border: 1px solid var(--at-line);
  background: rgb(255 255 255 / 92%);
  box-shadow: 0 14px 30px rgb(18 60 68 / 9%);
  gap: 4px;
  animation: at-channel-card-float 5.5s ease-in-out infinite;
}

.at-channel-map article i {
  margin-bottom: 7px;
  color: var(--at-mint-deep);
  font-size: 24px;
}

.at-channel-map article strong {
  font-size: 13px;
}

.at-channel-map article small {
  color: var(--at-muted);
  font-size: 9px;
}

.at-channel-map article:nth-of-type(1) { inset: 44px auto auto 8%; }
.at-channel-map article:nth-of-type(2) { inset: 64px 7% auto auto; }
.at-channel-map article:nth-of-type(3) { inset: auto auto 46px 9%; }
.at-channel-map article:nth-of-type(4) { inset: auto 7% 62px auto; }

.at-channel-map article:nth-of-type(2) { animation-delay: -1.4s; animation-duration: 6.2s; }
.at-channel-map article:nth-of-type(3) { animation-delay: -2.8s; animation-duration: 5.8s; }
.at-channel-map article:nth-of-type(4) { animation-delay: -4.1s; animation-duration: 6.6s; }

@keyframes at-channel-grid-drift {
  to { background-position: 44px 44px, 44px 44px, 0 0; }
}

@keyframes at-channel-orbit-clockwise {
  to { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes at-channel-orbit-counter {
  to { transform: translate(-50%, -50%) rotate(-360deg); }
}

@keyframes at-channel-center-float {
  0%, 100% { box-shadow: 0 22px 50px rgb(7 25 35 / 24%); transform: translateY(0) scale(1); }
  50% { box-shadow: 0 30px 65px rgb(7 25 35 / 32%); transform: translateY(-8px) scale(1.025); }
}

@keyframes at-channel-play-ripple {
  0% { opacity: 0.8; transform: scale(0.75); }
  80%, 100% { opacity: 0; transform: scale(1.9); }
}

@keyframes at-channel-card-float {
  0%, 100% { box-shadow: 0 14px 30px rgb(18 60 68 / 9%); transform: translateY(0); }
  50% { box-shadow: 0 22px 38px rgb(18 60 68 / 16%); transform: translateY(-10px); }
}

.at-promo-cases,
.at-workflow {
  background: var(--at-night);
  color: var(--at-white);
}

.at-section-heading-light > p:first-child,
.at-section-heading-light > div > p:first-child {
  color: var(--at-mint);
}

.at-section-heading-light h2 span {
  color: var(--at-lime);
}

.at-section-heading-light > p:last-child,
.at-section-heading-light.at-section-heading-split > p {
  color: #a5b6bc;
}

.at-case-group-overview {
  display: grid;
  padding: 0;
  margin: 0 0 28px;
  border: 1px solid #2d424a;
  list-style: none;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.at-case-group-card {
  position: relative;
  display: grid;
  min-height: 150px;
  align-content: end;
  padding: 28px 24px 24px;
  background: #0b2029;
  gap: 5px;
}

.at-case-group-card + .at-case-group-card {
  border-left: 1px solid #2d424a;
}

.at-case-group-card.is-current {
  background: #102f39;
  box-shadow: inset 0 3px 0 var(--at-lime);
}

.at-case-group-card > span {
  position: absolute;
  color: #82949a;
  font-size: 9px;
  font-weight: 900;
  inset: 20px auto auto 22px;
  letter-spacing: 0.14em;
}

.at-case-group-card > i {
  position: absolute;
  color: var(--at-mint);
  font-size: 26px;
  inset: 20px 22px auto auto;
}

.at-case-group-card strong {
  font-size: 16px;
}

.at-case-group-card small {
  color: #91a5ac;
  font-size: 10px;
}

.at-promo-case-grid {
  display: grid;
  gap: 1px;
  background: #2d424a;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.at-promo-case {
  position: relative;
  isolation: isolate;
  display: block;
  min-width: 0;
  height: 310px;
  padding: 0;
  overflow: hidden;
  border: 0;
  background: #102a35;
  color: var(--at-white);
  cursor: pointer;
  text-align: left;
}

.at-promo-case-featured {
  height: 621px;
  grid-row: span 2;
}

.at-promo-case video {
  position: absolute;
  inset: 0;
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 600ms cubic-bezier(0.22, 1, 0.36, 1), filter 300ms ease;
}

.at-promo-case:hover video,
.at-promo-case:focus-visible video {
  filter: saturate(1.12);
  transform: scale(1.035);
}

.at-case-shade {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgb(4 16 22 / 5%) 25%, rgb(4 16 22 / 88%) 100%);
}

.at-case-number {
  position: absolute;
  color: rgb(255 255 255 / 78%);
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.16em;
  inset: 22px auto auto 23px;
}

.at-case-copy {
  position: absolute;
  display: grid;
  gap: 6px;
  inset: auto 24px 22px;
}

.at-case-copy small {
  color: var(--at-mint);
  font-size: 9px;
  font-weight: 800;
  letter-spacing: 0.1em;
}

.at-case-copy strong {
  font-size: 16px;
}

.at-support-compare {
  display: grid;
  align-items: center;
  grid-template-columns: minmax(0, 1fr) 90px minmax(0, 1fr);
}

.at-support-before,
.at-support-after {
  min-height: 475px;
  padding: clamp(30px, 4vw, 52px);
  border: 1px solid var(--at-line);
}

.at-support-before {
  background: #e9eeea;
}

.at-support-after {
  border-color: #1b3b43;
  background: var(--at-night-soft);
  color: var(--at-white);
}

.at-support-before header,
.at-support-after header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--at-line);
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.13em;
}

.at-support-after header {
  border-color: #294650;
}

.at-support-before header span {
  color: #85918e;
}

.at-support-after header span {
  color: var(--at-mint);
}

.at-support-before header small,
.at-support-after header small {
  font-size: 9px;
}

.at-chat-stack {
  display: grid;
  margin: 34px 0 45px;
  gap: 14px;
}

.at-chat-stack p {
  display: grid;
  max-width: 88%;
  align-items: center;
  margin-bottom: 0;
  padding: 15px 18px;
  border: 1px solid var(--at-line);
  border-radius: 4px 17px 17px 17px;
  background: var(--at-white);
  color: #4e5b60;
  font-size: 12px;
  grid-template-columns: auto 1fr;
  gap: 10px;
}

.at-chat-stack p:nth-child(2) {
  margin-left: 8%;
}

.at-chat-stack p:nth-child(3) {
  margin-left: 3%;
}

.at-chat-stack i {
  color: #9aa5a2;
}

.at-support-before > strong,
.at-support-after > strong {
  display: block;
  margin-top: 24px;
  font-size: 17px;
}

.at-support-before > strong {
  color: #65706e;
}

.at-support-after > strong {
  color: var(--at-lime);
}

.at-support-arrow {
  display: grid;
  width: 56px;
  height: 56px;
  justify-self: center;
  border-radius: 50%;
  background: var(--at-lime);
  color: var(--at-night);
  font-size: 25px;
  place-items: center;
}

.at-help-card {
  display: grid;
  align-items: center;
  margin-top: 14px;
  padding: 16px 18px;
  border: 1px solid #2b4852;
  background: #102e39;
  grid-template-columns: 30px 34px 1fr;
  gap: 10px;
}

.at-help-card > span {
  color: #78909a;
  font-size: 9px;
  font-weight: 850;
}

.at-help-card > i {
  color: var(--at-mint);
  font-size: 22px;
}

.at-help-card div {
  display: grid;
  gap: 3px;
}

.at-help-card strong {
  font-size: 13px;
}

.at-help-card small {
  color: #89a0a8;
  font-size: 9px;
}

.at-tutorial-principles {
  display: grid;
  margin-top: 70px;
  border-top: 1px solid var(--at-line);
  border-left: 1px solid var(--at-line);
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.at-tutorial-principles article {
  position: relative;
  min-height: 270px;
  padding: 34px 30px;
  border-right: 1px solid var(--at-line);
  border-bottom: 1px solid var(--at-line);
  background: var(--at-white);
}

.at-tutorial-principles article > span {
  position: absolute;
  color: #9ba7a3;
  font-size: 9px;
  font-weight: 850;
  inset: 23px 23px auto auto;
}

.at-tutorial-principles i {
  color: var(--at-mint-deep);
  font-size: 36px;
}

.at-tutorial-principles h3 {
  margin: 50px 0 12px;
  font-size: 18px;
}

.at-tutorial-principles p {
  margin-bottom: 0;
  color: var(--at-muted);
  font-size: 12px;
  line-height: 1.75;
}

.at-workflow-list {
  display: grid;
  margin: 0;
  padding: 0;
  border-top: 1px solid #2b424c;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  list-style: none;
}

.at-workflow-list li {
  position: relative;
  min-height: 330px;
  padding: 30px 27px;
  border-right: 1px solid #2b424c;
}

.at-workflow-list li:first-child {
  border-left: 1px solid #2b424c;
}

.at-workflow-list li > span {
  color: #68808a;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.12em;
}

.at-workflow-list li > i {
  display: block;
  margin-top: 35px;
  color: var(--at-mint);
  font-size: 39px;
}

.at-workflow-list div {
  position: absolute;
  inset: auto 27px 32px;
}

.at-workflow-list h3 {
  margin-bottom: 12px;
  font-size: 16px;
}

.at-workflow-list p {
  margin-bottom: 0;
  color: #96aab2;
  font-size: 11px;
  line-height: 1.75;
}

.at-tutorial-studio {
  display: grid;
  align-items: start;
  border: 1px solid var(--at-line);
  background: var(--at-paper);
  grid-template-columns: minmax(0, 1.15fr) minmax(420px, 0.85fr);
}

.at-tutorial-viewer {
  position: sticky;
  top: 18px;
  min-width: 0;
  border-right: 1px solid var(--at-line);
  background: var(--at-night);
  color: var(--at-white);
}

.at-viewer-toolbar {
  display: flex;
  height: 58px;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  border-bottom: 1px solid #29414b;
  color: #8fa3ab;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.at-viewer-toolbar span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.at-viewer-toolbar i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--at-mint);
  box-shadow: 0 0 12px var(--at-mint);
}

.at-tutorial-viewer figure {
  display: grid;
  min-height: 520px;
  margin: 0;
  padding: 22px;
  background:
    linear-gradient(rgb(255 255 255 / 4%) 1px, transparent 1px),
    linear-gradient(90deg, rgb(255 255 255 / 4%) 1px, transparent 1px),
    #081c26;
  background-size: 32px 32px;
  place-items: center;
}

.at-tutorial-viewer video {
  display: block;
  width: 100%;
  max-height: 500px;
  background: #02090c;
  box-shadow: 0 24px 52px rgb(0 0 0 / 35%);
  object-fit: contain;
}

.at-viewer-copy {
  padding: 25px 27px 30px;
  border-top: 1px solid #29414b;
}

.at-viewer-copy > span {
  color: var(--at-mint);
  font-size: 8px;
  font-weight: 900;
  letter-spacing: 0.15em;
}

.at-viewer-copy h3 {
  margin: 10px 0 8px;
  font-size: 24px;
  letter-spacing: -0.03em;
}

.at-viewer-copy p {
  max-width: 620px;
  margin-bottom: 0;
  color: #94a8b0;
  font-size: 11px;
  line-height: 1.7;
}

.at-tutorial-library {
  min-width: 0;
  background: var(--at-white);
}

.at-format-tabs {
  display: grid;
  border-bottom: 1px solid var(--at-line);
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.at-format-tabs button {
  display: inline-flex;
  min-height: 66px;
  align-items: center;
  justify-content: center;
  padding: 14px;
  border: 0;
  border-bottom: 3px solid transparent;
  background: var(--at-white);
  color: #77837f;
  cursor: pointer;
  gap: 8px;
  font-size: 12px;
  font-weight: 800;
}

.at-format-tabs button + button {
  border-left: 1px solid var(--at-line);
}

.at-format-tabs button.is-active {
  border-bottom-color: var(--at-mint-deep);
  color: var(--at-ink);
}

.at-format-tabs button i {
  font-size: 19px;
}

.at-lesson-panel {
  padding: 25px;
}

.at-lesson-panel[hidden] {
  display: none;
}

.at-lesson-pagination {
  display: grid;
  margin-bottom: 24px;
  gap: 8px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.at-lesson-pagination[data-page-count="2"] {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.at-lesson-pagination button {
  position: relative;
  display: grid;
  min-width: 0;
  min-height: 76px;
  align-content: center;
  padding: 12px 10px 11px 38px;
  border: 1px solid var(--at-line);
  background: #f7f9f7;
  color: var(--at-ink);
  cursor: pointer;
  gap: 2px;
  text-align: left;
  transition: border-color 180ms ease, background 180ms ease, transform 180ms ease;
}

.at-lesson-pagination button:hover,
.at-lesson-pagination button:focus-visible {
  border-color: #94b8af;
  transform: translateY(-2px);
}

.at-lesson-pagination button.is-active {
  border-color: var(--at-mint-deep);
  background: #e9f8f3;
  box-shadow: inset 0 3px 0 var(--at-mint-deep);
}

.at-lesson-pagination button > span {
  position: absolute;
  color: var(--at-mint-deep);
  font-size: 11px;
  font-weight: 900;
  inset: 15px auto auto 12px;
}

.at-lesson-pagination button > strong {
  overflow: hidden;
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.at-lesson-pagination button > small {
  color: var(--at-muted);
  font-size: 8px;
}

.at-lesson-group[hidden] {
  display: none;
}

.at-lesson-group:not([hidden]) {
  animation: at-lesson-page-in 260ms ease both;
}

@keyframes at-lesson-page-in {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.at-lesson-group header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  color: #87928f;
  font-size: 9px;
  font-weight: 850;
  letter-spacing: 0.1em;
}

.at-lesson-button {
  display: grid;
  width: 100%;
  min-height: 72px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--at-line);
  background: var(--at-white);
  color: var(--at-ink);
  cursor: pointer;
  grid-template-columns: 28px 32px minmax(0, 1fr);
  grid-template-rows: auto auto;
  gap: 2px 8px;
  text-align: left;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.at-lesson-button + .at-lesson-button {
  margin-top: 7px;
}

.at-lesson-button:hover,
.at-lesson-button:focus-visible {
  border-color: #94b8af;
  transform: translateX(3px);
}

.at-lesson-button.is-active {
  border-color: var(--at-mint-deep);
  background: #effaf6;
  box-shadow: inset 3px 0 0 var(--at-mint-deep);
}

.at-lesson-button > span {
  color: #8c9995;
  font-size: 9px;
  font-weight: 900;
  grid-row: 1 / 3;
}

.at-lesson-button > i {
  color: var(--at-mint-deep);
  font-size: 20px;
  grid-row: 1 / 3;
}

.at-lesson-button > strong {
  align-self: end;
  font-size: 12px;
}

.at-lesson-button > small {
  align-self: start;
  color: var(--at-muted);
  font-size: 9px;
}

.at-case-boundary {
  display: flex;
  align-items: flex-start;
  margin: 24px 0 0;
  padding: 16px 18px;
  border: 1px solid var(--at-line);
  background: var(--at-paper);
  color: var(--at-muted);
  gap: 10px;
  font-size: 11px;
  line-height: 1.7;
}

.at-case-boundary i {
  margin-top: 2px;
  color: var(--at-mint-deep);
  font-size: 17px;
}

.at-final-cta {
  position: relative;
  padding: clamp(90px, 9vw, 148px) var(--gutter);
  overflow: hidden;
  background: var(--at-mint);
  color: var(--at-night);
  text-align: center;
}

.at-final-cta::before,
.at-final-cta::after {
  position: absolute;
  border: 1px solid rgb(7 25 35 / 17%);
  border-radius: 50%;
  content: "";
}

.at-final-cta::before {
  width: 450px;
  height: 450px;
  inset: -245px auto auto -160px;
}

.at-final-cta::after {
  width: 600px;
  height: 600px;
  inset: auto -290px -350px auto;
}

.at-final-cta > p:first-child {
  position: relative;
  z-index: 1;
  color: #0a6e5d;
}

.at-final-cta h2 {
  position: relative;
  z-index: 1;
  max-width: 1000px;
  margin-right: auto;
  margin-left: auto;
}

.at-final-cta h2 span {
  color: var(--at-night);
}

.at-final-cta > p:nth-of-type(2) {
  position: relative;
  z-index: 1;
  max-width: 740px;
  margin: 26px auto 0;
  color: #1d5f55;
  font-size: 14px;
  line-height: 1.85;
}

.at-final-cta > div {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  margin-top: 34px;
  gap: 11px;
}

.at-final-cta a {
  background: var(--at-night);
  color: var(--at-white);
}

.at-final-cta a + a {
  border: 1px solid rgb(7 25 35 / 34%);
  background: transparent;
  color: var(--at-night);
}

.at-case-dialog {
  width: min(1080px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  padding: 0;
  overflow: visible;
  border: 0;
  background: transparent;
}

.at-case-dialog::backdrop {
  background: rgb(2 12 17 / 86%);
  backdrop-filter: blur(6px);
}

.at-dialog-shell {
  position: relative;
  display: grid;
  max-height: calc(100vh - 32px);
  overflow: auto;
  background: var(--at-white);
  grid-template-columns: minmax(0, 1.5fr) minmax(300px, 0.5fr);
}

.at-dialog-shell figure {
  display: grid;
  min-height: 580px;
  margin: 0;
  background: #02090c;
  place-items: center;
}

.at-dialog-shell video {
  display: block;
  width: 100%;
  max-height: calc(100vh - 32px);
  object-fit: contain;
}

.at-dialog-copy {
  display: flex;
  justify-content: center;
  padding: 54px 35px 36px;
  background: var(--at-paper);
  flex-direction: column;
}

.at-dialog-copy > p {
  margin-bottom: 17px;
  color: var(--at-mint-deep);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.14em;
}

.at-dialog-copy h2 {
  margin-bottom: 14px;
  font-size: 30px;
  letter-spacing: -0.04em;
  line-height: 1.25;
}

.at-dialog-copy strong {
  margin-bottom: 15px;
  color: #536167;
  font-size: 11px;
  line-height: 1.6;
}

.at-dialog-copy > span {
  color: var(--at-muted);
  font-size: 12px;
  line-height: 1.75;
}

.at-dialog-copy a {
  align-self: flex-start;
  margin-top: 29px;
  background: var(--at-night);
  color: var(--at-white);
}

.at-dialog-close {
  position: absolute;
  z-index: 5;
  display: grid;
  width: 43px;
  height: 43px;
  border: 1px solid rgb(255 255 255 / 28%);
  border-radius: 50%;
  background: rgb(6 23 32 / 76%);
  color: var(--at-white);
  cursor: pointer;
  inset: 17px 17px auto auto;
  place-items: center;
}

@media (max-width: 1180px) {
  .at-hero {
    grid-template-columns: minmax(0, 0.92fr) minmax(460px, 1.08fr);
  }

  .at-phone-primary {
    left: 8%;
  }

  .at-phone-secondary {
    right: 3%;
  }

  .at-signal-top {
    right: 3%;
  }

  .at-channel-map::after {
    width: 440px;
    height: 440px;
  }

  .at-tutorial-studio {
    grid-template-columns: minmax(0, 1fr) 420px;
  }
}

@media (max-width: 980px) {
  .at-hero {
    grid-template-columns: 1fr;
  }

  .at-hero-copy {
    min-height: auto;
    padding-bottom: 74px;
  }

  .at-hero-visual {
    min-height: 680px;
    border-top: 1px solid rgb(255 255 255 / 8%);
    border-left: 0;
  }

  .at-phone-primary {
    left: 21%;
  }

  .at-phone-secondary {
    right: 15%;
  }

  .at-signal-top {
    right: 9%;
  }

  .at-signal-bottom {
    left: 12%;
  }

  .at-outcome-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .at-outcome-strip li:nth-child(3) {
    border-left: 0;
    border-top: 1px solid var(--at-line);
  }

  .at-outcome-strip li:nth-child(4) {
    border-top: 1px solid var(--at-line);
  }

  .at-section-heading-split {
    align-items: start;
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .at-section-heading-split > p {
    max-width: 720px;
  }

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

  .at-promo-lead {
    border-right: 0;
    border-bottom: 1px solid var(--at-line);
  }

  .at-promo-case-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .at-promo-case-featured {
    height: 440px;
    grid-column: span 2;
    grid-row: auto;
  }

  .at-support-compare {
    grid-template-columns: 1fr;
  }

  .at-support-arrow {
    margin: -10px 0;
    transform: rotate(90deg);
  }

  .at-tutorial-principles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .at-workflow-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .at-workflow-list li:nth-child(n + 3) {
    border-top: 1px solid #2b424c;
  }

  .at-workflow-list li:nth-child(odd) {
    border-left: 1px solid #2b424c;
  }

  .at-tutorial-studio {
    grid-template-columns: 1fr;
  }

  .at-tutorial-viewer {
    position: relative;
    top: 0;
    border-right: 0;
  }

  .at-tutorial-viewer figure {
    min-height: 460px;
  }

  .at-dialog-shell {
    grid-template-columns: 1fr;
  }

  .at-dialog-shell figure {
    min-height: 0;
  }
}

@media (max-width: 700px) {
  .at-hero-copy {
    padding: 64px 22px 58px;
  }

  .at-hero h1 {
    font-size: clamp(42px, 13vw, 60px);
    line-height: 1.12;
  }

  .at-hero-intro {
    font-size: 15px;
  }

  .at-hero-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .at-button {
    width: 100%;
  }

  .at-hero-visual {
    min-height: 600px;
  }

  .at-phone-primary {
    width: 290px;
    height: 550px;
    left: 7%;
    top: 34px;
    border-radius: 35px;
  }

  .at-hero-preview {
    height: 430px;
  }

  .at-phone-secondary {
    width: 196px;
    height: 370px;
    padding: 16px;
    right: -15%;
    top: 154px;
  }

  .at-mini-screen {
    height: 248px;
  }

  .at-signal {
    min-width: 184px;
    padding: 12px 14px;
  }

  .at-signal-top {
    right: 4%;
    top: 31px;
  }

  .at-signal-bottom {
    bottom: 25px;
    left: 3%;
  }

  .at-outcome-strip {
    padding: 0;
    grid-template-columns: 1fr;
  }

  .at-outcome-strip li {
    min-height: 108px;
  }

  .at-outcome-strip li + li,
  .at-outcome-strip li:nth-child(3),
  .at-outcome-strip li:nth-child(4) {
    border-top: 1px solid var(--at-line);
    border-left: 0;
  }

  .at-promotion,
  .at-tutorial-intro,
  .at-tutorial-cases,
  .at-workflow,
  .at-promo-cases {
    padding: 70px 20px;
  }

  .at-section-heading {
    margin-bottom: 40px;
  }

  .at-section-heading h2,
  .at-final-cta h2 {
    font-size: clamp(34px, 10.8vw, 48px);
  }

  .at-section-heading > p:last-child,
  .at-section-heading-split > p {
    font-size: 13px;
  }

  .at-promo-lead {
    padding: 30px 24px;
  }

  .at-promo-lead h3 {
    font-size: clamp(21px, 6.4vw, 25px);
  }

  .at-channel-map {
    min-height: 620px;
  }

  .at-channel-map::before {
    width: 280px;
    height: 280px;
  }

  .at-channel-map::after {
    width: 420px;
    height: 420px;
  }

  .at-channel-center {
    width: 150px;
    height: 150px;
  }

  .at-channel-map article {
    width: 128px;
    min-height: 104px;
    padding: 14px;
  }

  .at-channel-map article:nth-of-type(1) { inset: 31px auto auto 4%; }
  .at-channel-map article:nth-of-type(2) { inset: 46px 3% auto auto; }
  .at-channel-map article:nth-of-type(3) { inset: auto auto 34px 4%; }
  .at-channel-map article:nth-of-type(4) { inset: auto 3% 50px auto; }

  .at-promo-case-grid {
    grid-template-columns: 1fr;
  }

  .at-case-group-overview {
    grid-template-columns: 1fr;
  }

  .at-case-group-card {
    min-height: 128px;
  }

  .at-case-group-card + .at-case-group-card {
    border-top: 1px solid #2d424a;
    border-left: 0;
  }

  .at-promo-case,
  .at-promo-case-featured {
    height: 270px;
    grid-column: auto;
  }

  .at-support-before,
  .at-support-after {
    min-height: auto;
    padding: 28px 22px;
  }

  .at-tutorial-principles {
    grid-template-columns: 1fr;
  }

  .at-tutorial-principles article {
    min-height: 235px;
  }

  .at-workflow-list {
    grid-template-columns: 1fr;
  }

  .at-workflow-list li,
  .at-workflow-list li:nth-child(n + 3),
  .at-workflow-list li:nth-child(odd) {
    min-height: 250px;
    border-top: 1px solid #2b424c;
    border-right: 1px solid #2b424c;
    border-left: 1px solid #2b424c;
  }

  .at-workflow-list li:first-child {
    border-top: 0;
  }

  .at-tutorial-viewer figure {
    min-height: 280px;
    padding: 10px;
  }

  .at-tutorial-viewer video {
    max-height: 360px;
  }

  .at-viewer-toolbar {
    padding: 0 16px;
  }

  .at-viewer-copy {
    padding: 22px 18px 26px;
  }

  .at-format-tabs button {
    min-height: 72px;
    flex-direction: column;
    gap: 4px;
    font-size: 10px;
  }

  .at-lesson-panel {
    padding: 18px 12px 24px;
  }

  .at-lesson-pagination {
    gap: 6px;
  }

  .at-lesson-pagination button {
    min-height: 70px;
    padding-right: 7px;
    padding-left: 32px;
  }

  .at-lesson-pagination button > span {
    left: 10px;
  }

  .at-lesson-pagination button > strong {
    font-size: 10px;
  }

  .at-lesson-button {
    padding: 12px 10px;
    grid-template-columns: 26px 27px minmax(0, 1fr);
    gap: 2px 5px;
  }

  .at-lesson-button:hover,
  .at-lesson-button:focus-visible {
    transform: none;
  }

  .at-case-boundary {
    font-size: 10px;
  }

  .at-final-cta {
    padding: 82px 22px;
  }

  .at-final-cta > div {
    align-items: stretch;
    flex-direction: column;
  }

  .at-final-cta a {
    width: 100%;
  }

  .at-dialog-shell {
    max-height: calc(100vh - 18px);
  }

  .at-dialog-copy {
    padding: 30px 22px;
  }

  .at-dialog-copy h2 {
    font-size: 25px;
  }

  .at-dialog-close {
    width: 39px;
    height: 39px;
    top: 10px;
    right: 10px;
  }
}

@media (max-width: 390px) {
  .at-phone-primary {
    left: 1%;
  }

  .at-signal-top {
    right: -12px;
  }

  .at-channel-map article {
    width: 116px;
  }

  .at-lesson-button > small {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
}

@media (prefers-reduced-motion: reduce) {
  .at-channel-map,
  .at-channel-map::before,
  .at-channel-map::after,
  .at-channel-center,
  .at-channel-center i::after,
  .at-channel-map article,
  .at-lesson-group:not([hidden]),
  .at-phone-primary,
  .at-phone-secondary,
  .at-mini-video,
  .at-promo-case video,
  .at-button,
  .at-lesson-button {
    transition: none;
    animation: none;
  }

  .at-hero-preview video {
    animation: none;
  }
}