:root {
  --ink: #12182a;
  --ink-soft: #3a4560;
  --mute: #6a7590;
  --paper: #eef2f8;
  --paper-deep: #dde5f0;
  --surface: #f7f9fc;
  --blue: #1a8cff;
  --blue-deep: #0054e0;
  --violet: #7b3fe4;
  --accent: var(--blue);
  --accent-deep: var(--blue-deep);
  --accent-glow: rgba(26, 140, 255, 0.28);
  --violet-glow: rgba(123, 63, 228, 0.22);
  --line: rgba(18, 24, 42, 0.1);
  --mock-panel: #141c2c;
  --font-display: "Syne", sans-serif;
  --font-body: "Figtree", sans-serif;
  --space: clamp(1.25rem, 4vw, 2.5rem);
  --max: 68rem;
}

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(180deg, rgba(247, 249, 252, 0.94) 0%, rgba(238, 242, 248, 0.97) 45%, var(--paper) 100%),
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 23px,
      rgba(18, 24, 42, 0.03) 23px,
      rgba(18, 24, 42, 0.03) 24px
    ),
    repeating-linear-gradient(
      90deg,
      transparent,
      transparent 23px,
      rgba(18, 24, 42, 0.03) 23px,
      rgba(18, 24, 42, 0.03) 24px
    );
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

img,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: var(--blue-deep);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--violet);
}

.site-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--max);
  margin: 0 auto;
  padding: 1.1rem var(--space);
}

.brand-link {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  text-decoration: none;
}

.brand-mark {
  width: 2.15rem;
  height: 2.15rem;
  border-radius: 0.45rem;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.28));
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.03em;
  color: #f4f7fc;
}

.site-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 0.85rem 1.15rem;
}

.nav-link {
  font-size: 0.92rem;
  font-weight: 560;
  color: rgba(242, 246, 252, 0.78);
  text-decoration: none;
}

.nav-link:hover {
  color: #fff;
}

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  align-items: end;
  overflow: hidden;
}

.hero-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
  background: linear-gradient(145deg, #070d18 0%, #101b30 42%, #16203a 72%, #1a1440 100%);
}

.hero-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 55% 45% at 72% 38%, var(--accent-glow), transparent 60%),
    radial-gradient(ellipse 40% 35% at 18% 78%, var(--violet-glow), transparent 55%),
    linear-gradient(to top, rgba(7, 13, 24, 0.72) 0%, transparent 42%);
  pointer-events: none;
}

.picker-mock {
  position: absolute;
  right: max(-1.5rem, 4vw);
  top: 50%;
  width: min(28rem, 52vw);
  transform: translateY(-42%);
  opacity: 0;
  animation: mock-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.15s forwards;
}

@media (max-width: 720px) {
  .picker-mock {
    width: min(22rem, 88vw);
    right: 50%;
    top: 16%;
    transform: translate(50%, 0);
    animation: mock-in-mobile 0.9s cubic-bezier(0.22, 1, 0.36, 1) 0.1s forwards;
  }
}

@keyframes mock-in {
  from {
    opacity: 0;
    transform: translateY(-36%) translateX(1.5rem);
  }
  to {
    opacity: 1;
    transform: translateY(-42%) translateX(0);
  }
}

@keyframes mock-in-mobile {
  from {
    opacity: 0;
    transform: translate(50%, 1rem);
  }
  to {
    opacity: 1;
    transform: translate(50%, 0);
  }
}

.picker-frame {
  background: var(--mock-panel);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 0.85rem;
  box-shadow:
    0 28px 56px rgba(0, 0, 0, 0.4),
    0 0 0 1px rgba(26, 140, 255, 0.18);
  overflow: hidden;
  font-family: var(--font-body);
}

.picker-chrome {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 0.9rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.8rem;
  font-weight: 600;
}

.picker-mark {
  width: 1.35rem;
  height: 1.35rem;
  border-radius: 0.35rem;
}

.picker-search {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.9rem;
}

.picker-search span {
  color: rgba(255, 255, 255, 0.78);
}

.picker-list {
  list-style: none;
  margin: 0;
  padding: 0.4rem;
}

.picker-list li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 0.65rem;
  align-items: center;
  padding: 0.65rem 0.75rem;
  border-radius: 0.5rem;
  color: rgba(255, 255, 255, 0.88);
  font-size: 0.88rem;
}

.picker-list li.active {
  background: linear-gradient(90deg, rgba(26, 140, 255, 0.24), rgba(123, 63, 228, 0.16));
  box-shadow: inset 0 0 0 1px rgba(26, 140, 255, 0.35);
}

.picker-list .kind {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #6eb6ff;
  font-weight: 700;
}

.picker-list .meta {
  color: rgba(255, 255, 255, 0.35);
  font-size: 0.75rem;
}

.hero-copy {
  position: relative;
  z-index: 2;
  max-width: var(--max);
  width: 100%;
  margin: 0 auto;
  padding: clamp(7rem, 18vh, 10rem) var(--space) clamp(2.5rem, 8vh, 4rem);
}

@media (max-width: 720px) {
  .hero-copy {
    padding-top: clamp(15.5rem, 48vh, 22rem);
  }
}

.brand-mark-hero {
  width: clamp(4.5rem, 12vw, 6rem);
  height: auto;
  margin-bottom: 0.85rem;
  filter: drop-shadow(0 10px 28px rgba(26, 140, 255, 0.35));
  animation: mark-in 0.8s cubic-bezier(0.22, 1, 0.36, 1) forwards;
}

@keyframes mark-in {
  from {
    opacity: 0;
    transform: translateY(0.6rem) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.brand-word {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.75rem, 9vw, 4.75rem);
  line-height: 0.95;
  letter-spacing: -0.045em;
  color: #f4f7fc;
  margin: 0 0 0.85rem;
  text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

.hero-headline {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.2rem, 2.6vw, 1.55rem);
  letter-spacing: -0.02em;
  color: rgba(242, 246, 252, 0.9);
  margin: 0 0 0.75rem;
  max-width: 18ch;
}

.hero-lede {
  margin: 0 0 1.75rem;
  max-width: 34ch;
  color: rgba(226, 232, 244, 0.72);
  font-size: 1.05rem;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.25rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.72rem 1.3rem;
  font-family: var(--font-body);
  font-weight: 650;
  font-size: 0.95rem;
  border-radius: 0.5rem;
  border: none;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.btn-primary {
  color: #fff;
  background: linear-gradient(105deg, var(--blue) 0%, #3a6bff 55%, var(--violet) 100%);
  box-shadow: 0 8px 24px rgba(26, 140, 255, 0.35);
}

.btn-primary:hover {
  color: #fff;
  filter: brightness(1.06);
  transform: translateY(-1px);
}

.btn-ghost {
  color: rgba(242, 246, 252, 0.92);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.btn-ghost:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.14);
  transform: translateY(-1px);
}

.btn-disabled {
  color: var(--mute);
  background: var(--paper-deep);
  border: 1px solid var(--line);
  cursor: not-allowed;
  box-shadow: none;
}

.keycap {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: rgba(242, 246, 252, 0.7);
  margin: 0;
}

.keycap kbd {
  display: inline-block;
  padding: 0.2rem 0.45rem;
  border-radius: 0.3rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 600;
  color: #e8eef8;
  animation: key-pulse 2.4s ease-in-out infinite;
}

@keyframes key-pulse {
  0%,
  100% {
    box-shadow: 0 0 0 0 transparent;
  }
  50% {
    box-shadow: 0 0 0 3px var(--accent-glow);
    border-color: rgba(26, 140, 255, 0.45);
  }
}

/* Sections */
main {
  position: relative;
  z-index: 1;
  background: var(--surface);
  border-top: 1px solid var(--line);
}

.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: clamp(3.5rem, 8vw, 5.5rem) var(--space);
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.section.is-visible {
  opacity: 1;
  transform: translateY(0);
}

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

.section-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  background: linear-gradient(90deg, var(--blue-deep), var(--violet));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 0.75rem;
}

.section h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  margin: 0 0 0.75rem;
  max-width: 18ch;
}

.section-lede {
  margin: 0 0 1.5rem;
  max-width: 42ch;
  color: var(--ink-soft);
}

.feature-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.85rem 2rem;
  max-width: 40rem;
}

@media (min-width: 640px) {
  .feature-list.split {
    grid-template-columns: 1fr 1fr;
  }
}

.feature-list li {
  position: relative;
  padding-left: 1.15rem;
  color: var(--ink-soft);
  font-size: 1rem;
}

.feature-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 1px;
  background: linear-gradient(135deg, var(--blue), var(--violet));
}

.query-examples {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.25rem;
}

.query-examples code {
  font-family: ui-monospace, "Cascadia Code", "Segoe UI Mono", monospace;
  font-size: 0.82rem;
  padding: 0.35rem 0.55rem;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 0.35rem;
  color: var(--ink);
}

.section-download .section-lede {
  max-width: 46ch;
}

.download-version {
  margin: -0.5rem 0 1.35rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--mute);
}

.download-grid {
  display: grid;
  gap: 1rem;
  max-width: 36rem;
}

@media (min-width: 640px) {
  .download-grid {
    grid-template-columns: 1fr 1fr;
    max-width: 42rem;
  }
}

.download-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.15rem 1.2rem;
  border: 1px solid var(--line);
  border-radius: 0.65rem;
  background: var(--paper);
}

.download-meta {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.download-os {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.download-detail {
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.download-item .btn {
  width: 100%;
  text-align: center;
}

.download-note {
  margin: 1.25rem 0 0;
  max-width: 42ch;
  font-size: 0.92rem;
  color: var(--mute);
}

.site-footer {
  padding: 2.25rem var(--space) 2.75rem;
  border-top: 1px solid var(--line);
  background: var(--paper-deep);
  text-align: center;
  color: var(--mute);
  font-size: 0.9rem;
}

.footer-brand {
  display: inline-flex;
  justify-content: center;
  margin: 0 auto 1rem;
  text-decoration: none;
}

.footer-lockup {
  width: auto;
  height: 2.35rem;
}

.site-footer p {
  margin: 0 auto;
  max-width: 36rem;
}

@media (prefers-reduced-motion: reduce) {
  .picker-mock,
  .brand-mark-hero,
  .keycap kbd,
  .section {
    animation: none !important;
    transition: none !important;
    opacity: 1 !important;
    transform: none !important;
  }
}