:root {
  --bg: #050505;
  --bg-2: #0d0d0d;
  --fg: #ffffff;
  --muted: rgba(255, 255, 255, 0.62);
  --faint: rgba(255, 255, 255, 0.38);
  --line: rgba(255, 255, 255, 0.12);
  --pop: #00e5ff;
  --pop-dim: rgba(0, 229, 255, 0.14);
  --nav-h: 72px;
  --wrap: 1240px;
  --display: "Plus Jakarta Sans", "Helvetica Neue", Arial, sans-serif;
  --body: "Inter", "Helvetica Neue", Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Menlo, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}

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

::selection {
  background: var(--pop);
  color: #000;
}

.wrap {
  width: min(var(--wrap), 100% - 48px);
  margin-inline: auto;
}

.pop {
  color: var(--pop);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--pop);
}

/* ---------- Logo ---------- */

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: 0.02em;
}

.logo img {
  width: 28px;
  height: 28px;
}

.logo small {
  font-family: var(--mono);
  font-weight: 400;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--faint);
}

/* ---------- Nav ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--nav-h);
  background: rgba(5, 5, 5, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease;
}

.nav.is-scrolled {
  border-bottom-color: var(--line);
}

.nav .wrap {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.14em;
}

.nav-links a {
  position: relative;
  color: var(--muted);
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--fg);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -6px;
  height: 2px;
  background: var(--pop);
  transition: right 0.25s ease;
}

.nav-links a:hover::after {
  right: 0;
}

.nav-links .nav-login {
  color: #000;
  background: var(--pop);
  padding: 9px 18px;
  border-radius: 999px;
  font-weight: 700;
}

.nav-links .nav-login:hover {
  color: #000;
  box-shadow: 0 0 0 4px var(--pop-dim);
}

.nav-links .nav-login::after {
  display: none;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 26px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 15px;
  border: 1px solid var(--line);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  border-color: var(--fg);
}

.btn-pop {
  background: var(--pop);
  color: #000;
  border-color: var(--pop);
}

.btn-pop:hover {
  border-color: var(--pop);
  box-shadow: 0 10px 40px -10px var(--pop);
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  min-height: calc(100vh - var(--nav-h));
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-block: 64px;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 70% 40%, #000 0%, transparent 65%);
  -webkit-mask-image: radial-gradient(ellipse at 70% 40%, #000 0%, transparent 65%);
  opacity: 0.5;
  pointer-events: none;
}

.hero .wrap {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(0, 1fr);
  gap: 64px;
  align-items: center;
}

.hero h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(40px, 4.3vw, 72px);
  line-height: 0.98;
  letter-spacing: 0.01em;
  margin: 22px 0 28px;
}

.hero-sub {
  max-width: 34ch;
  font-size: 19px;
  color: var(--muted);
  margin: 0 0 40px;
}

.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

/* ---------- Hero product mock ---------- */

.mock {
  position: relative;
}

.mock-window {
  background: var(--bg-2);
  border: 1px solid var(--line);
  border-radius: 18px;
  box-shadow: 0 40px 120px -40px rgba(0, 229, 255, 0.35);
  overflow: hidden;
  transform: perspective(1400px) rotateY(-7deg) rotateX(3deg);
}

.mock-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
}

.mock-bar i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.16);
}

.mock-bar span {
  margin-left: 12px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--faint);
}

.mock-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 18px 20px 8px;
}

.mock-head strong {
  font-family: var(--display);
  font-size: 18px;
}

.mock-head span {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--pop);
}

.lead-row {
  display: grid;
  grid-template-columns: 26px 1fr auto;
  gap: 14px;
  align-items: center;
  padding: 13px 20px;
  border-top: 1px solid var(--line);
  font-size: 14px;
}

.lead-row .rank {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--faint);
}

.lead-row b {
  display: block;
  font-weight: 600;
}

.lead-row small {
  color: var(--faint);
  font-size: 12px;
}

.tag {
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.1em;
  padding: 4px 9px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
  white-space: nowrap;
}

.tag-pop {
  color: #000;
  background: var(--pop);
  border-color: var(--pop);
  font-weight: 700;
}

.tag-line {
  color: var(--pop);
  border-color: var(--pop);
}

.lead-row.is-top {
  background: linear-gradient(90deg, var(--pop-dim), transparent 80%);
}

.brief-card {
  position: absolute;
  left: -48px;
  bottom: -72px;
  width: 290px;
  background: #000;
  border: 1px solid var(--pop);
  border-radius: 14px;
  padding: 18px;
  box-shadow: 0 30px 80px -20px #000;
  animation: float 6s ease-in-out infinite;
}

.brief-card .eyebrow {
  font-size: 10px;
}

.brief-card p {
  margin: 8px 0 14px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

.contact-line {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 13px;
}

.avatar {
  flex: none;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--pop-dim);
  color: var(--pop);
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
}

.contact-line small {
  display: block;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 11px;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* ---------- Stats strip ---------- */

.stats {
  border-block: 1px solid var(--line);
}

.stats .wrap {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.stat {
  padding: 36px 0;
}

.stat + .stat {
  padding-left: 36px;
  border-left: 1px solid var(--line);
}

.stat strong {
  display: block;
  font-family: var(--display);
  font-size: 40px;
  line-height: 1.1;
}

.stat span {
  color: var(--muted);
  font-size: 15px;
}

/* ---------- Features (single scroll) ---------- */

.features {
  padding-top: 140px;
}

.section-head {
  max-width: 760px;
  margin-bottom: 72px;
}

.section-head h2,
.about h2,
.contact h2,
.faq h2 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(36px, 4.6vw, 64px);
  line-height: 1;
  letter-spacing: -0.03em;
  margin: 18px 0 0;
}

.feature-grid {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: 80px;
}

.feature-index {
  position: sticky;
  top: calc(var(--nav-h) + 48px);
  align-self: start;
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--line);
}

.feature-index li a {
  display: flex;
  gap: 16px;
  padding: 12px 0 12px 22px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--faint);
  font-size: 15px;
  transition: color 0.25s ease, border-color 0.25s ease;
}

.feature-index li a span {
  font-family: var(--mono);
  font-size: 12px;
  padding-top: 2px;
}

.feature-index li a:hover {
  color: var(--fg);
}

.feature-index li a.is-active {
  color: var(--fg);
  border-left-color: var(--pop);
}

.feature-index li a.is-active span {
  color: var(--pop);
}

.feature {
  min-height: 78vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding-block: 48px;
  border-top: 1px solid var(--line);
}

.feature:first-child {
  border-top: 0;
  padding-top: 0;
}

.feature .num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--pop);
}

.feature h3 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(30px, 3.2vw, 44px);
  line-height: 1.02;
  letter-spacing: -0.025em;
  margin: 14px 0 20px;
}

.feature p {
  color: var(--muted);
  margin: 0;
}

.viz {
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: radial-gradient(circle at 30% 20%, rgba(0, 229, 255, 0.08), transparent 60%), var(--bg-2);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  overflow: hidden;
}

/* viz: publications */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.chip {
  font-family: var(--mono);
  font-size: 12px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--muted);
}

.chip.on {
  border-color: var(--pop);
  color: var(--pop);
}

/* viz: ad clipping */
.page {
  position: relative;
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1.4fr 1fr;
  gap: 10px;
}

.page div {
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.06);
}

.page .ad {
  position: relative;
  grid-row: span 2;
  background: rgba(0, 229, 255, 0.06);
  outline: 2px dashed var(--pop);
  outline-offset: 4px;
}

.page .ad::after {
  content: "AD · Dental Practice";
  position: absolute;
  left: 0;
  top: -30px;
  font-family: var(--mono);
  font-size: 10px;
  background: var(--pop);
  color: #000;
  padding: 3px 8px;
  border-radius: 4px;
  white-space: nowrap;
}

/* viz: ranked list */
.rank-bar {
  display: grid;
  grid-template-columns: 1fr 110px;
  gap: 14px;
  align-items: center;
  font-size: 14px;
}

.rank-bar i {
  display: block;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--pop) var(--w), rgba(255, 255, 255, 0.08) var(--w));
}

/* viz: contact */
.person {
  display: flex;
  gap: 16px;
  align-items: center;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #000;
}

.person .avatar {
  width: 52px;
  height: 52px;
  font-size: 15px;
}

.person b {
  display: block;
  font-size: 18px;
}

.person small {
  color: var(--faint);
}

.field {
  display: flex;
  justify-content: space-between;
  padding: 12px 4px;
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 13px;
}

.field span {
  color: var(--faint);
}

.ladder {
  display: flex;
  gap: 6px;
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--faint);
}

.ladder span {
  flex: 1;
  text-align: center;
  padding: 7px 4px;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.ladder span.on {
  border-color: var(--pop);
  color: var(--pop);
}

/* viz: brief */
.brief-lines .eyebrow {
  display: block;
  margin-bottom: 4px;
}

.brief-lines p {
  color: var(--fg) !important;
  font-size: 16px;
  margin-bottom: 18px !important;
}

/* viz: digest */
.mail {
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #000;
  overflow: hidden;
}

.mail-head {
  padding: 14px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 13px;
}

.mail-head small {
  display: block;
  color: var(--faint);
  font-family: var(--mono);
  font-size: 11px;
}

.mail-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 18px;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
}

.csv {
  align-self: flex-start;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--pop);
  border: 1px solid var(--pop);
  border-radius: 8px;
  padding: 8px 14px;
}

/* ---------- About ---------- */

.about {
  padding-block: 160px;
  border-top: 1px solid var(--line);
  margin-top: 80px;
}

.about .wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
}

.about p {
  color: var(--muted);
  font-size: 19px;
  margin: 0 0 22px;
}

.about p strong {
  color: var(--fg);
  font-weight: 600;
}

/* ---------- FAQ ---------- */

.faq {
  padding-bottom: 160px;
}

.faq .wrap {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 80px;
}

.faq details {
  border-top: 1px solid var(--line);
  padding: 22px 0;
}

.faq details:last-child {
  border-bottom: 1px solid var(--line);
}

.faq summary {
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  font-size: 19px;
  font-weight: 600;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: "+";
  font-family: var(--mono);
  color: var(--pop);
  transition: transform 0.2s ease;
}

.faq details[open] summary::after {
  transform: rotate(45deg);
}

.faq details p {
  color: var(--muted);
  margin: 14px 0 0;
  max-width: 60ch;
}

/* ---------- Contact ---------- */

.contact {
  position: relative;
  padding-block: 160px;
  border-top: 1px solid var(--line);
  overflow: hidden;
}

.contact::before {
  content: "";
  position: absolute;
  width: 720px;
  height: 720px;
  right: -240px;
  top: -200px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 255, 0.16), transparent 65%);
  pointer-events: none;
}

.contact .wrap {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-lede {
  color: var(--muted);
  font-size: 19px;
  margin: 24px 0 32px;
  max-width: 40ch;
}

.contact-email {
  font-family: var(--mono);
  font-size: 15px;
  color: var(--pop);
  border-bottom: 1px solid var(--pop);
  padding-bottom: 2px;
}

.form {
  display: grid;
  gap: 14px;
}

.form .row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form label {
  display: grid;
  gap: 8px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faint);
}

.form input,
.form textarea {
  width: 100%;
  font: inherit;
  font-family: var(--body);
  font-size: 16px;
  letter-spacing: normal;
  text-transform: none;
  color: var(--fg);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px 16px;
  transition: border-color 0.2s ease;
}

.form textarea {
  min-height: 120px;
  resize: vertical;
}

.form input:focus,
.form textarea:focus {
  outline: none;
  border-color: var(--pop);
}

.form .btn {
  justify-self: start;
  cursor: pointer;
  font-family: var(--body);
}

/* ---------- Footer ---------- */

.footer {
  border-top: 1px solid var(--line);
}

.footer-top {
  height: 100px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.help-menu {
  display: flex;
  gap: 32px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-size: 14px;
  color: var(--muted);
}

.help-menu a:hover,
.footer-bottom a:hover {
  color: var(--pop);
}

.footer-bottom {
  height: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 20px;
  color: var(--faint);
  border-top: 1px solid var(--line);
  margin-bottom: 12px;
}

.footer-bottom nav {
  display: flex;
  gap: 20px;
}

/* ---------- Legal pages ---------- */

.legal {
  padding-block: 96px 140px;
}

.legal .wrap {
  max-width: 780px;
}

.legal h1 {
  font-family: var(--display);
  font-weight: 800;
  font-size: clamp(40px, 5vw, 68px);
  line-height: 1;
  letter-spacing: -0.03em;
  margin: 18px 0 12px;
}

.legal .meta {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--faint);
  margin-bottom: 56px;
}

.legal h2 {
  font-family: var(--display);
  font-size: 22px;
  margin: 48px 0 12px;
}

.legal h3 {
  font-size: 17px;
  margin: 28px 0 8px;
}

.legal p,
.legal li {
  color: var(--muted);
}

.legal ul {
  padding-left: 20px;
}

.legal li {
  margin-bottom: 8px;
}

.legal a {
  color: var(--pop);
}

.legal strong {
  color: var(--fg);
}

.legal table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  margin: 16px 0;
}

.legal th,
.legal td {
  text-align: left;
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  vertical-align: top;
}

.legal th {
  color: var(--fg);
  font-weight: 600;
}

/* ---------- Reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal.is-in {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .brief-card {
    animation: none;
  }
}

/* ---------- Responsive ---------- */

@media (max-width: 1024px) {
  .feature-grid {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .feature-index {
    display: none;
  }
}

@media (max-width: 860px) {
  .hero .wrap,
  .about .wrap,
  .faq .wrap,
  .contact .wrap,
  .feature {
    grid-template-columns: minmax(0, 1fr);
    gap: 48px;
  }
  .hero {
    min-height: 0;
  }
  .mock-window {
    transform: none;
  }
  .brief-card {
    left: auto;
    right: 12px;
    bottom: -56px;
    width: 250px;
  }
  .hero .mock {
    margin-bottom: 56px;
  }
  .feature {
    min-height: 0;
    padding-block: 72px;
  }
  .stats .wrap {
    grid-template-columns: 1fr;
  }
  .stat + .stat {
    padding-left: 0;
    border-left: 0;
    border-top: 1px solid var(--line);
  }
  .about,
  .contact {
    padding-block: 104px;
  }
  .faq {
    padding-bottom: 104px;
  }
}

@media (max-width: 600px) {
  .nav-links {
    gap: 18px;
    font-size: 11px;
  }
  .nav-links .nav-login {
    padding: 7px 12px;
  }
  .logo small {
    display: none;
  }
  .form .row {
    grid-template-columns: 1fr;
  }
  .help-menu {
    gap: 16px;
    font-size: 13px;
  }
  .footer-bottom {
    font-size: 9px;
  }
  .footer-bottom nav {
    gap: 12px;
  }
}