:root {
  --blue: #1069d8;
  --cyan: #24c3f0;
  --navy: #091642;
  --ink: #132033;
  --muted: #607086;
  --line: #dce5f2;
  --soft: #f5f9ff;
  --white: #ffffff;
  --shadow: 0 20px 60px rgba(9, 22, 66, 0.14);
  --shadow-strong: 0 30px 80px rgba(9, 22, 66, 0.2);
  --glow: rgba(36, 195, 240, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, Segoe UI, Arial, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(36, 195, 240, 0.12), transparent 24%),
    linear-gradient(135deg, #f8fbff 0%, #f3f8ff 48%, #ffffff 100%);
  overflow-x: hidden;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 14px min(6vw, 72px);
  background: rgba(255, 255, 255, 0.82);
  border-bottom: 1px solid rgba(16, 105, 216, 0.12);
  box-shadow: 0 10px 35px rgba(9, 22, 66, 0.06);
  backdrop-filter: blur(18px) saturate(150%);
  animation: slideDown 0.65s ease both;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-size: 22px;
  font-weight: 800;
  color: var(--blue);
}

.brand img {
  width: 44px;
  height: 44px;
  object-fit: contain;
  filter: drop-shadow(0 8px 16px rgba(16, 105, 216, 0.18));
}

nav {
  display: flex;
  gap: 20px;
  color: var(--muted);
  font-weight: 700;
}

nav a {
  position: relative;
  overflow: hidden;
  text-decoration: none;
  transition: color 0.22s ease;
}

nav a:hover,
nav a.is-active {
  color: var(--blue);
}

nav a::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 2px;
  content: "";
  background: linear-gradient(90deg, var(--cyan), var(--blue));
  border-radius: 999px;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.24s ease;
}

nav a:hover::after,
nav a.is-active::after {
  transform: scaleX(1);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(320px, 0.95fr);
  align-items: center;
  gap: 48px;
  min-height: calc(100vh - 73px);
  padding: 72px min(6vw, 72px) 56px;
  background:
    radial-gradient(circle at 78% 16%, rgba(36, 195, 240, 0.24), transparent 32%),
    radial-gradient(circle at 18% 78%, rgba(16, 105, 216, 0.16), transparent 28%),
    linear-gradient(135deg, #ffffff 0%, #f6fbff 100%);
  isolation: isolate;
  position: relative;
  overflow: hidden;
}

.hero::before {
  position: absolute;
  inset: 12% -18% auto auto;
  width: 48vw;
  height: 48vw;
  min-width: 460px;
  min-height: 460px;
  content: "";
  background: conic-gradient(from 120deg, rgba(36, 195, 240, 0.26), rgba(16, 105, 216, 0.08), rgba(36, 195, 240, 0.26));
  border-radius: 999px;
  filter: blur(35px);
  opacity: 0.55;
  z-index: -1;
  animation: slowSpin 18s linear infinite;
}

.hero-copy {
  animation: riseIn 0.78s ease both;
}

.eyebrow {
  margin: 0 0 12px;
  color: var(--blue);
  font-size: 13px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

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

h1 {
  margin-bottom: 20px;
  color: var(--navy);
  font-size: clamp(44px, 7vw, 84px);
  line-height: 0.98;
  letter-spacing: 0;
  text-wrap: balance;
}

h2 {
  margin-bottom: 16px;
  color: var(--navy);
  font-size: clamp(32px, 4vw, 54px);
  line-height: 1.05;
  letter-spacing: 0;
  text-wrap: balance;
}

h3 {
  margin-bottom: 10px;
  color: var(--navy);
  font-size: 22px;
}

.hero-text,
.section-heading p,
.split-section p,
.download-panel p,
.feature-card p {
  color: var(--muted);
  font-size: 18px;
  line-height: 1.65;
}

.hero-actions,
.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 900;
  box-shadow: 0 12px 28px rgba(16, 105, 216, 0.16);
  transition: transform 0.22s ease, box-shadow 0.22s ease, border-color 0.22s ease;
}

.button::before {
  position: absolute;
  top: 0;
  bottom: 0;
  left: -80%;
  width: 60%;
  content: "";
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.46), transparent);
  transform: skewX(-18deg);
  transition: left 0.5s ease;
}

.button:hover {
  box-shadow: var(--shadow-strong);
  transform: translateY(-3px);
}

.button:active,
nav a:active,
.feature-card:active,
.trust-strip div:active,
.steps li:active {
  transform: scale(0.98);
}

.button:hover::before {
  left: 120%;
}

.button.primary {
  color: var(--white);
  background: linear-gradient(135deg, var(--cyan), var(--blue));
}

.button.secondary {
  color: var(--blue);
  background: var(--white);
  border: 1px solid var(--line);
}

.button.secondary.dark {
  color: var(--white);
  background: linear-gradient(135deg, #07113a, #0f2d76);
  border-color: var(--navy);
}

.hero-media,
.split-section > img,
.feature-card img {
  background:
    linear-gradient(135deg, rgba(36, 195, 240, 0.18), rgba(16, 105, 216, 0.08)),
    var(--soft);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.hero-media {
  border-radius: 26px;
  padding: 18px;
  animation: floatIn 0.9s 0.08s ease both, heroFloat 7s 1.2s ease-in-out infinite;
  transform-origin: center;
}

.hero-media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 16px;
}

.release-card {
  position: relative;
  margin: 28px 0 0;
  padding: 24px 26px 22px;
  border: 2px solid var(--cyan);
  border-radius: 18px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(226, 248, 255, 0.98));
  box-shadow: 0 18px 42px rgba(16, 105, 216, 0.2), 0 0 0 6px rgba(36, 195, 240, 0.1);
  animation: riseIn 0.8s 0.18s ease both;
}

.release-card::before {
  position: absolute;
  top: -13px;
  left: 20px;
  padding: 5px 11px;
  content: "VERSION 4.0";
  color: var(--white);
  background: var(--blue);
  border-radius: 7px;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
  box-shadow: 0 7px 16px rgba(16, 105, 216, 0.25);
}

.release-card-content h2 {
  color: var(--blue);
  font-size: clamp(26px, 3vw, 38px);
  margin-bottom: 10px;
}

.release-card-content > p:not(.eyebrow) {
  margin-bottom: 0;
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
}

.release-points {
  margin: 16px 0 0;
  padding-left: 18px;
  color: var(--ink);
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.65;
}

.trust-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  margin: 0 min(6vw, 72px);
  background: rgba(16, 105, 216, 0.1);
  border: 1px solid rgba(16, 105, 216, 0.12);
  border-radius: 18px;
  overflow: hidden;
  transform: translateY(-26px);
  box-shadow: 0 18px 40px rgba(9, 22, 66, 0.08);
  animation: riseIn 0.78s 0.16s ease both;
}

.trust-strip div {
  position: relative;
  overflow: hidden;
  padding: 24px;
  background: linear-gradient(180deg, rgba(255,255,255,0.96), rgba(246,251,255,0.94));
  transition: background 0.22s ease, transform 0.22s ease;
}

.trust-strip div:hover {
  background: #fafdff;
  transform: translateY(-2px);
}

.trust-strip strong,
.trust-strip span {
  display: block;
}

.trust-strip strong {
  margin-bottom: 6px;
  color: var(--navy);
  font-size: 18px;
}

.trust-strip span {
  color: var(--muted);
}

.section,
.split-section,
.download-panel {
  padding: 80px min(6vw, 72px);
  animation: sectionFade 0.75s ease both;
  animation-timeline: view();
  animation-range: entry 0% cover 28%;
}

.section-heading {
  max-width: 760px;
  margin-bottom: 34px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  position: relative;
  overflow: hidden;
  padding: 18px;
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 10px 28px rgba(9, 22, 66, 0.06);
  transition: transform 0.24s ease, box-shadow 0.24s ease, border-color 0.24s ease;
  transform-style: preserve-3d;
}

.feature-card::after {
  position: absolute;
  inset: 0;
  pointer-events: none;
  content: "";
  background: linear-gradient(135deg, rgba(36, 195, 240, 0.12), transparent 42%);
  opacity: 0;
  transition: opacity 0.24s ease;
}

.feature-card:hover {
  border-color: rgba(16, 105, 216, 0.28);
  box-shadow: var(--shadow);
  transform: translateY(-8px);
}

.feature-card.is-tilting {
  transform: perspective(900px) rotateX(var(--tilt-x, 0deg)) rotateY(var(--tilt-y, 0deg)) translateY(-8px);
}

.feature-card:hover::after {
  opacity: 1;
}

.feature-card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  margin-bottom: 18px;
  border-radius: 8px;
  transition: transform 0.28s ease;
}

.feature-card:hover img {
  transform: scale(1.03);
}

.feature-card p {
  font-size: 17px;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  align-items: center;
  gap: 50px;
  background:
    radial-gradient(circle at 80% 10%, rgba(36, 195, 240, 0.14), transparent 28%),
    var(--soft);
}

.split-section > img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: contain;
  border-radius: 18px;
}

.steps {
  display: grid;
  gap: 12px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
}

.steps li {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink);
  font-weight: 800;
  transition: transform 0.2s ease, color 0.2s ease;
}

.steps li:hover {
  color: var(--blue);
  transform: translateX(6px);
}

.steps span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  color: var(--white);
  background: var(--blue);
  border-radius: 50%;
  box-shadow: 0 10px 20px rgba(16, 105, 216, 0.22);
}

.compact {
  padding-bottom: 30px;
}

.download-panel {
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  margin: 50px min(6vw, 72px) 80px;
  padding: 38px;
  color: var(--white);
  background:
    radial-gradient(circle at 95% 10%, rgba(36, 195, 240, 0.46), transparent 24%),
    linear-gradient(135deg, #07113a, #1069d8);
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.download-panel::before {
  position: absolute;
  inset: -60% -12% auto auto;
  width: 360px;
  height: 360px;
  content: "";
  background: rgba(255, 255, 255, 0.15);
  border-radius: 999px;
  animation: pulseGlow 5s ease-in-out infinite;
}

.download-panel > * {
  position: relative;
}

.click-ripple {
  position: absolute;
  pointer-events: none;
  background: rgba(36, 195, 240, 0.26);
  border-radius: 50%;
  transform: scale(0);
  animation: ripplePop 0.64s ease-out forwards;
  z-index: 3;
}

.button .click-ripple {
  background: rgba(255, 255, 255, 0.36);
}

.browse-reveal {
  opacity: 0;
  transform: translateY(28px) scale(0.98);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.browse-reveal.is-visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.download-panel h2,
.download-panel p,
.download-panel .eyebrow {
  color: var(--white);
}

.download-panel > div:first-child {
  max-width: 720px;
}

.site-footer {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  padding: 28px min(6vw, 72px);
  color: var(--muted);
  border-top: 1px solid var(--line);
}

.site-footer span:first-child {
  color: var(--blue);
  font-weight: 900;
}

.how-to-page {
  min-height: 100vh;
  background:
    radial-gradient(circle at 18% 18%, rgba(36, 195, 240, 0.18), transparent 32%),
    radial-gradient(circle at 84% 8%, rgba(16, 105, 216, 0.16), transparent 28%),
    linear-gradient(180deg, #ffffff 0%, #f5f9ff 100%);
}

.how-to-hero {
  padding: 54px min(6vw, 72px) 80px;
}

.how-to-card {
  position: relative;
  overflow: hidden;
  max-width: 1040px;
  margin: 0 auto;
  padding: clamp(26px, 5vw, 54px);
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(220, 229, 242, 0.92);
  border-radius: 24px;
  box-shadow: var(--shadow-strong);
  backdrop-filter: blur(18px);
  animation: riseIn 0.72s ease both;
}

.how-to-card::before {
  position: absolute;
  inset: -160px -120px auto auto;
  width: 380px;
  height: 380px;
  content: "";
  background: conic-gradient(from 90deg, rgba(36, 195, 240, 0.18), rgba(16, 105, 216, 0.1), rgba(36, 195, 240, 0.2));
  border-radius: 999px;
  filter: blur(20px);
  animation: slowSpin 16s linear infinite;
}

.how-to-logo {
  position: relative;
  width: min(220px, 48vw);
  margin: 0 auto 16px;
  filter: drop-shadow(0 18px 28px rgba(16, 105, 216, 0.18));
  animation: heroFloat 6s ease-in-out infinite;
}

.how-to-card .eyebrow,
.how-to-card h1,
.typed-guide {
  position: relative;
}

.how-to-card .eyebrow,
.how-to-card h1 {
  text-align: center;
}

.how-to-card h1 {
  color: var(--blue);
}

.typed-guide {
  min-height: 64vh;
  margin: 28px 0 0;
  padding: clamp(18px, 3vw, 30px);
  color: var(--ink);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(245, 249, 255, 0.96));
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.8);
  white-space: pre-wrap;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: clamp(17px, 2vw, 22px);
  line-height: 1.72;
  user-select: text;
}

.typed-guide::after {
  display: inline-block;
  width: 10px;
  height: 1.15em;
  margin-left: 4px;
  content: "";
  background: var(--blue);
  vertical-align: -0.18em;
  animation: caretBlink 0.75s steps(1) infinite;
}

.typed-guide.typing-done::after {
  display: none;
}

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

  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .download-panel {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 680px) {
  .site-header,
  .site-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  nav {
    flex-wrap: wrap;
  }

  .hero {
    min-height: auto;
    padding-top: 48px;
  }

  .trust-strip,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes riseIn {
  from {
    opacity: 0;
    transform: translateY(26px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(28px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes heroFloat {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
}

@keyframes slowSpin {
  to {
    transform: rotate(1turn);
  }
}

@keyframes sectionFade {
  from {
    opacity: 0.35;
    transform: translateY(32px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulseGlow {
  0%,
  100% {
    opacity: 0.7;
    transform: scale(1);
  }
  50% {
    opacity: 0.95;
    transform: scale(1.12);
  }
}

@keyframes ripplePop {
  to {
    opacity: 0;
    transform: scale(2.45);
  }
}

@keyframes caretBlink {
  50% {
    opacity: 0;
  }
}