:root {
  --soft-blue: #005b9f;
  --soft-blue-deep: #003f6e;
  --sutra-orange: #ff6b00;
  --sutra-orange-soft: #fff0e6;
  --bg-page: #f9fafb;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-soft: rgba(255, 255, 255, 0.68);
  --line: rgba(15, 23, 42, 0.08);
  --line-strong: rgba(0, 91, 159, 0.16);
  --text-main: #0f172a;
  --text-copy: #334155;
  --text-soft: #64748b;
  --shadow-xl: 0 32px 80px rgba(15, 23, 42, 0.12);
  --shadow-lg: 0 16px 36px rgba(15, 23, 42, 0.08);
  --radius-2xl: 34px;
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-pill: 999px;
  --shell: min(1120px, calc(100% - 2rem));
  --font-body: "Segoe UI Variable", "Trebuchet MS", Verdana, sans-serif;
  --font-display: "Bahnschrift", "Franklin Gothic Demi", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--text-main);
  background:
    radial-gradient(circle at 10% 8%, rgba(0, 91, 159, 0.14), transparent 28%),
    radial-gradient(circle at 88% 4%, rgba(255, 107, 0, 0.14), transparent 26%),
    linear-gradient(180deg, #fcfdff 0%, var(--bg-page) 100%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(15, 23, 42, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 23, 42, 0.03) 1px, transparent 1px);
  background-size: 78px 78px;
  mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.52), transparent 84%);
}

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

button,
input,
textarea,
select {
  font: inherit;
}

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

[hidden] {
  display: none !important;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -3rem;
  left: 1rem;
  z-index: 100;
  padding: 0.85rem 1.2rem;
  border-radius: var(--radius-pill);
  color: #fff;
  background: var(--soft-blue);
}

.skip-link:focus {
  top: 1rem;
}

.shell {
  width: var(--shell);
  margin: 0 auto;
}

.page-ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: clip;
}

.page-ambient__beam {
  position: absolute;
  border-radius: 50%;
  filter: blur(24px);
  opacity: 0.9;
}

.page-ambient__beam--blue {
  width: 23rem;
  height: 23rem;
  left: -5rem;
  top: 5rem;
  background: rgba(0, 91, 159, 0.18);
}

.page-ambient__beam--orange {
  width: 18rem;
  height: 18rem;
  right: 6%;
  top: 9rem;
  background: rgba(255, 107, 0, 0.18);
}

.page-ambient__mesh {
  position: absolute;
  inset: auto 12% 10% 12%;
  height: 15rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 91, 159, 0.08), rgba(255, 107, 0, 0.04) 55%, transparent 72%);
  filter: blur(18px);
}

.surface-card {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.landing {
  padding: 4.5rem 0 5rem;
}

.lockup {
  padding-top: 1rem;
}

.wordmark {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(3.6rem, 10vw, 6.3rem);
  line-height: 0.92;
  letter-spacing: 0.02em;
}

.wordmark__soft {
  color: var(--soft-blue);
}

.wordmark__sutra {
  color: var(--sutra-orange);
}

.tagline {
  margin: 0.55rem 0 0;
  padding-left: clamp(4.8rem, 14vw, 10.8rem);
  font-size: clamp(1.05rem, 2.3vw, 1.6rem);
  font-weight: 700;
  color: var(--text-copy);
}

.tagline span {
  color: var(--sutra-orange);
}

.app-list {
  display: grid;
  gap: 1.15rem;
  margin-top: 2.2rem;
}

.app-card {
  padding: 1.3rem;
  border-radius: var(--radius-2xl);
}

.app-card,
.developer-card,
.not-found__card {
  background: var(--surface);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-xl);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.app-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.app-card__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 2rem);
  letter-spacing: 0.01em;
}

.download-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.65rem;
}

.download-button,
.ghost-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 3rem;
  padding: 0.85rem 1.15rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  cursor: pointer;
  font-weight: 700;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background-color 180ms ease,
    box-shadow 180ms ease,
    color 180ms ease;
}

.download-button:hover,
.download-button:focus-visible,
.ghost-link:hover,
.ghost-link:focus-visible {
  transform: translateY(-1px);
}

.download-button svg {
  width: 1rem;
  height: 1rem;
  flex: 0 0 1rem;
}

.download-button--windows {
  color: #fff;
  background: linear-gradient(135deg, var(--soft-blue), #0f74c2);
  box-shadow: 0 12px 24px rgba(0, 91, 159, 0.2);
}

.download-button--android {
  color: var(--sutra-orange);
  background: var(--sutra-orange-soft);
  border-color: rgba(255, 107, 0, 0.14);
}

.download-button--ios {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.82);
  border-color: rgba(15, 23, 42, 0.08);
}

.feature-list {
  display: grid;
  gap: 0.75rem;
  padding: 0;
  margin: 1rem 0 0;
  list-style: none;
}

.feature-list li,
.developer-list li {
  position: relative;
  padding-left: 1.1rem;
  color: var(--text-copy);
  line-height: 1.7;
}

.feature-list li::before,
.developer-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.74rem;
  width: 0.44rem;
  height: 0.44rem;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--soft-blue), var(--sutra-orange));
}

.download-frame {
  position: absolute;
  width: 0;
  height: 0;
  border: 0;
  opacity: 0;
  pointer-events: none;
}

.developer-page,
.page-404 {
  min-height: 100vh;
}

.developer-main,
.not-found {
  padding: 4.5rem 0;
}

.developer-lockup {
  margin-bottom: 1.7rem;
}

.developer-kicker,
.not-found__kicker {
  margin: 0 0 0.75rem;
  color: var(--soft-blue);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.developer-title,
.not-found__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 4rem);
  color: var(--soft-blue);
}

.developer-copy,
.not-found__copy {
  margin: 1rem 0 0;
  max-width: 56rem;
  color: var(--text-copy);
  line-height: 1.75;
}

.developer-grid {
  display: grid;
  gap: 1rem;
  margin-top: 1.7rem;
}

.developer-card,
.not-found__card {
  padding: 1.45rem;
  border-radius: var(--radius-2xl);
}

.developer-card h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 3vw, 1.9rem);
}

.developer-card p {
  margin: 0.8rem 0 0;
  color: var(--text-copy);
  line-height: 1.75;
}

.developer-list {
  display: grid;
  gap: 0.8rem;
  padding: 0;
  margin: 1rem 0 0;
  list-style: none;
}

.ghost-link {
  margin-top: 1.3rem;
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.78);
  border-color: rgba(15, 23, 42, 0.08);
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
  transition:
    opacity 420ms ease,
    transform 420ms ease;
}

@media (max-width: 860px) {
  .app-card__header {
    flex-direction: column;
  }

  .download-row {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .landing,
  .developer-main,
  .not-found {
    padding: 3.2rem 0 4rem;
  }

  .tagline {
    padding-left: 0;
    margin-top: 0.8rem;
  }

  .app-card,
  .developer-card,
  .not-found__card {
    padding: 1rem;
  }
}