:root {
  --bg: #02070c;
  --bg2: #03121b;
  --panel: #041823;
  --cyan: #14dcf4;
  --cyan2: #36bde7;
  --gold: #e8a94a;
  --white: #f5f7f8;
  --muted: #b0bbc3;
  --line: rgba(53, 190, 218, 0.34);
  --max: 1440px;
}

/* =========================================================
   GLOBAL
   ========================================================= */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: #01060a;
  color: var(--white);
  font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

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

.site-shell {
  max-width: var(--max);
  margin: 0 auto;
  background: linear-gradient(
    180deg,
    #02070c 0%,
    #02121a 58%,
    #02090e 100%
  );
  box-shadow: 0 0 70px rgba(0, 0, 0, 0.45);
}

.section-border {
  border-bottom: 1px solid var(--line);
}

/* =========================================================
   HEADER
   ========================================================= */

.header {
  min-height: 150px;
  display: flex;
  align-items: center;
  padding: 0 58px;
  position: relative;
  z-index: 20;
  overflow: visible;
  background: linear-gradient(
    90deg,
    #02070c 0%,
    #02111a 65%,
    #02070c 100%
  );
}

/*
   Logo is controlled by HEIGHT rather than WIDTH.
   This prevents the tall helix icon and glow from being cropped.
*/

.brand {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex: 0 0 auto;
  width: auto;
  height: auto;
  overflow: visible;
}

.brand img {
  display: block;
  width: auto;
  height: 120px;
  max-width: 100%;
  object-fit: contain;
  object-position: left center;
}

.nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 38px;
  font-size: 14px;
  font-weight: 500;
}

.nav a {
  opacity: 0.92;
}

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

.contact-link {
  border: 1px solid var(--cyan);
  border-radius: 10px;
  padding: 14px 24px;
}

.menu-toggle {
  display: none;
  background: none;
  border: 0;
  color: white;
  font-size: 25px;
}

/* =========================================================
   HERO
   ========================================================= */

.hero {
  height: 540px;
  display: grid;
  grid-template-columns: 46% 54%;
  overflow: hidden;
  background: #020b12;
}

.hero-copy {
  padding: 62px 36px 48px 66px;
  position: relative;
  z-index: 2;
}

.short-line {
  display: block;
  width: 44px;
  height: 2px;
  background: var(--cyan);
  margin-bottom: 16px;
}

.eyebrow,
.section-label {
  font-size: 12px;
  letter-spacing: 0.22em;
  font-weight: 700;
  color: var(--cyan);
}

.hero h1 {
  font-size: 53px;
  line-height: 1.05;
  font-weight: 300;
  letter-spacing: -0.035em;
  margin: 14px 0 22px;
}

.hero h1 span {
  color: var(--cyan);
}

.hero p {
  max-width: 520px;
  margin: 0;
  color: #d8dfe3;
  font-size: 18px;
  line-height: 1.45;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  gap: 18px;
  margin-top: 28px;
}

.btn {
  height: 48px;
  padding: 0 25px;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  gap: 28px;
  font-weight: 700;
  font-size: 14px;
}

.btn.primary {
  background: linear-gradient(135deg, #37e6ef, #12bdf2);
  color: #001019;
  box-shadow: 0 0 24px rgba(27, 212, 241, 0.24);
}

.btn.secondary {
  border: 1px solid #5dc8e4;
  background: rgba(1, 10, 15, 0.38);
}

.hero-visual {
  position: relative;
  overflow: hidden;
}

.hero-visual::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  background:
    linear-gradient(
      90deg,
      #020b12 0%,
      rgba(2, 11, 18, 0.78) 7%,
      rgba(2, 11, 18, 0) 35%
    ),
    linear-gradient(
      0deg,
      rgba(2, 11, 18, 0.18),
      transparent 42%
    );
}

.hero-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* =========================================================
   COMMON TYPOGRAPHY
   ========================================================= */

.section-label {
  display: flex;
  align-items: center;
  gap: 12px;
}

.section-label i {
  display: block;
  width: 55px;
  height: 1px;
  background: rgba(88, 211, 232, 0.65);
}

h2 {
  font-size: 38px;
  line-height: 1.06;
  font-weight: 300;
  letter-spacing: -0.025em;
  margin: 12px 0 0;
}

h3 {
  font-size: 18px;
  line-height: 1.25;
  margin: 0 0 12px;
}

p {
  color: var(--muted);
  line-height: 1.48;
}

/* =========================================================
   PREMISE
   ========================================================= */

.premise {
  height: 250px;
  display: grid;
  grid-template-columns: 28% 30% 1px 1fr;
  align-items: center;
  background: linear-gradient(
    90deg,
    #03131d 0%,
    #04141c 100%
  );
}

.premise-visual {
  height: 100%;
  overflow: hidden;
}

.premise-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 42%;
}

.premise-title {
  padding: 0 28px 0 42px;
}

.premise-title h2 {
  font-size: 32px;
}

.vertical-rule {
  width: 1px;
  height: 86px;
  background: #25c9e5;
}

.premise-copy {
  padding: 0 60px 0 38px;
}

.premise-copy h3 {
  font-size: 18px;
}

.premise-copy p {
  font-size: 14px;
  margin: 0;
  max-width: 520px;
}

/* =========================================================
   INDUSTRY BLIND SPOT
   ========================================================= */

.blindspot {
  height: 205px;
  display: grid;
  grid-template-columns: 72% 28%;
  background: #030c12;
}

.blind-copy {
  padding: 38px 26px 30px 66px;
}

.blind-row {
  display: grid;
  grid-template-columns: 34% 1px 1fr;
  gap: 30px;
  align-items: center;
  margin-top: 10px;
}

.blind-row h2 {
  font-size: 32px;
  margin: 0;
}

.vertical-rule.short {
  height: 60px;
}

.blind-detail h3 {
  font-size: 17px;
  margin-bottom: 10px;
}

.blind-detail p {
  font-size: 14px;
  margin: 0;
}

.blind-visual {
  overflow: hidden;
}

.blind-visual img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

/* =========================================================
   HELIX APPROACH
   ========================================================= */

.approach {
  height: 255px;
  display: grid;
  grid-template-columns: 32% 1fr 1px 1fr;
  gap: 28px;
  align-items: center;
  padding: 0 62px;
  background: linear-gradient(
    90deg,
    #02131b,
    #020b11
  );
}

.approach-title h2 {
  font-size: 32px;
}

.approach-feature {
  display: grid;
  grid-template-columns: 86px 1fr;
  gap: 18px;
  align-items: center;
}

.approach-feature h3 {
  font-size: 17px;
}

.approach-feature p {
  font-size: 13px;
  margin: 0;
}

.feature-icon.layers {
  width: 72px;
  height: 62px;
  position: relative;
}

.feature-icon.layers span {
  position: absolute;
  left: 10px;
  width: 48px;
  height: 28px;
  border: 1px solid var(--cyan);
  transform: rotate(30deg) skewX(-30deg);
  background: linear-gradient(
    145deg,
    rgba(29, 214, 244, 0.25),
    rgba(0, 30, 50, 0.2)
  );
  box-shadow: 0 0 14px rgba(17, 218, 246, 0.12);
}

.feature-icon.layers span:nth-child(1) {
  top: 2px;
}

.feature-icon.layers span:nth-child(2) {
  top: 16px;
}

.feature-icon.layers span:nth-child(3) {
  top: 30px;
}

.feature-wave {
  width: 92px;
  height: 62px;
  overflow: hidden;
}

.feature-wave img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: 28% 55%;
  filter: saturate(1.2);
}

/* =========================================================
   ARCHITECTURE
   ========================================================= */

.architecture {
  height: 335px;
  display: grid;
  grid-template-columns: 30% 70%;
  align-items: center;
  padding: 0 62px;
  background: #021018;
}

.architecture-intro {
  padding-right: 36px;
}

.architecture-intro h2 {
  font-size: 32px;
}

.architecture-intro p {
  font-size: 14px;
  max-width: 300px;
}

.architecture-cards {
  display: grid;
  grid-template-columns:
    1fr 28px
    1fr 28px
    1fr 28px
    1fr;
  align-items: center;
  gap: 8px;
}

.arch-card {
  height: 220px;
  border: 1px solid rgba(28, 211, 239, 0.75);
  border-radius: 9px;
  padding: 18px 18px 15px;
  background: linear-gradient(
    180deg,
    rgba(7, 41, 56, 0.78),
    rgba(2, 16, 24, 0.88)
  );
  box-shadow:
    inset 0 0 24px rgba(20, 205, 238, 0.06);
}

.arch-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: #6ce8f7;
  font-size: 20px;
  font-weight: 700;
}

.arch-top svg {
  width: 34px;
  height: 34px;
  fill: none;
  stroke: #65e8f7;
  stroke-width: 2;
}

.arch-card h3 {
  margin-top: 22px;
  font-size: 17px;
}

.arch-card p {
  font-size: 12.5px;
  line-height: 1.38;
  margin: 0;
  color: #c3ccd1;
}

.arrow {
  font-size: 42px;
  color: var(--cyan);
  font-weight: 200;
  text-align: center;
}

/* =========================================================
   MVP
   ========================================================= */

.mvp {
  height: 300px;
  display: grid;
  grid-template-columns: 34% 43% 23%;
  align-items: stretch;
  background: #030d13;
}

.mvp-copy {
  padding: 40px 20px 36px 66px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.mvp-copy h2 {
  font-size: 35px;
}

.mvp-copy p {
  font-size: 14px;
  max-width: 390px;
}

.mvp-image {
  overflow: hidden;
  background: #051521;
}

.mvp-image img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 52%;
}

.mvp-pills {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 13px;
  padding: 0 52px 0 22px;
}

.mvp-pills span {
  height: 42px;
  border: 1px solid rgba(30, 210, 239, 0.75);
  border-radius: 24px;
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 14px;
  font-size: 13px;
  background: rgba(2, 16, 24, 0.55);
}

.mvp-pills b {
  color: var(--cyan);
  font-size: 20px;
  font-weight: 400;
}

/* =========================================================
   ROADMAP
   ========================================================= */

.roadmap {
  height: 350px;
  position: relative;
  display: grid;
  grid-template-columns: 30% 70%;
  align-items: start;
  padding: 42px 62px 0;
  overflow: hidden;
  background: #021018;
}

.roadmap-title {
  padding-right: 35px;
}

.roadmap-title h2 {
  font-size: 33px;
}

.roadmap-title p {
  font-size: 14px;
}

.timeline {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1.15fr 1fr;
  gap: 30px;
  padding-top: 36px;
  z-index: 2;
}

.track {
  position: absolute;
  top: 46px;
  left: 14px;
  right: 14px;
  height: 2px;
  background: #2c4854;
}

.track-blue,
.track-gold {
  position: absolute;
  top: 0;
  height: 2px;
}

.track-blue {
  left: 0;
  width: 61%;
  background: linear-gradient(
    90deg,
    #5ecedf,
    #11d8ef
  );
}

.track-gold {
  right: 0;
  width: 39%;
  background: linear-gradient(
    90deg,
    #11d8ef,
    #e4a249
  );
}

.timeline-item {
  position: relative;
  padding: 42px 12px 0 0;
}

.timeline-item i {
  position: absolute;
  top: 3px;
  left: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: #03141c;
  border: 2px solid #8fe8f6;
  box-shadow:
    0 0 0 5px rgba(38, 201, 229, 0.12);
}

.timeline-item.active i {
  background: #20d4ef;
  box-shadow: 0 0 16px #20d4ef;
}

.timeline-item.future i {
  border-color: #f0b45d;
  background: #89551f;
  box-shadow:
    0 0 16px rgba(240, 180, 93, 0.5);
}

.timeline-item h3 {
  font-size: 18px;
}

.timeline-item p {
  font-size: 14px;
  margin: 0;
  max-width: 230px;
}

.roadmap-wave {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 105px;
  object-fit: cover;
  opacity: 0.78;
  z-index: 0;
}

/* =========================================================
   FOOTER
   ========================================================= */

footer {
  height: 92px;
  border-top: 1px solid var(--line);
  background: #01070b;
}

.footer-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 62px;
  color: #7e929d;
  font-size: 12px;
  letter-spacing: 0.06em;
}

.footer-inner a {
  color: var(--cyan);
}

/* =========================================================
   TABLET
   ========================================================= */

@media (max-width: 1000px) {

  .header {
    min-height: 110px;
    padding: 0 24px;
  }

  .brand {
    width: auto;
    height: auto;
  }

  .brand img {
    width: auto;
    height: 88px;
    max-width: 280px;
    object-fit: contain;
  }

  .menu-toggle {
    display: block;
    margin-left: auto;
  }

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: #03131b;
    flex-direction: column;
    align-items: stretch;
    padding: 18px 24px;
    gap: 0;
  }

  .nav.open {
    display: flex;
  }

  .nav a {
    padding: 14px 0;
  }

  .hero {
    height: auto;
    grid-template-columns: 1fr;
  }

  .hero-copy {
    padding: 46px 28px;
  }

  .hero-visual {
    height: 360px;
  }

  .premise,
  .blindspot,
  .approach,
  .architecture,
  .mvp,
  .roadmap {
    height: auto;
    grid-template-columns: 1fr;
  }

  .premise-visual,
  .blind-visual {
    height: 260px;
  }

  .premise-title,
  .premise-copy,
  .blind-copy,
  .approach,
  .architecture,
  .mvp-copy,
  .roadmap {
    padding: 36px 28px;
  }

  .vertical-rule {
    display: none;
  }

  .blind-row {
    grid-template-columns: 1fr;
  }

  .approach {
    gap: 28px;
  }

  .architecture-cards {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }

  .architecture-cards .arrow {
    display: none;
  }

  .mvp-image {
    height: 320px;
  }

  .mvp-pills {
    padding: 30px 28px 40px;
  }

  .timeline {
    margin-top: 18px;
  }

  .footer-inner {
    padding: 0 28px;
  }
}

/* =========================================================
   MOBILE
   ========================================================= */

@media (max-width: 650px) {

  .header {
    min-height: 92px;
    padding: 0 18px;
  }

  .brand {
    width: auto;
    height: auto;
    flex-shrink: 0;
  }

  .brand img {
    width: auto;
    height: 72px;
    max-width: 215px;
    object-fit: contain;
  }

  .hero h1 {
    font-size: 42px;
  }

  .hero p {
    font-size: 16px;
  }

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

  .premise-title h2,
  .blind-row h2,
  .approach-title h2,
  .architecture-intro h2,
  .roadmap-title h2 {
    font-size: 28px;
  }

  .approach-feature {
    grid-template-columns: 70px 1fr;
  }

  .architecture-cards {
    grid-template-columns: 1fr;
  }

  .timeline {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .track {
    display: none;
  }

  .timeline-item {
    padding: 10px 0 18px 42px;
  }

  .timeline-item i {
    top: 10px;
  }

  .footer-inner {
    flex-direction: column;
    justify-content: center;
    gap: 8px;
    text-align: center;
  }
}