:root {
  --bg-main: #0b0b0f;
  --bg-secondary: #0f0f14;
  --bg-card: #111118;
  --border: #1f1f2a;
  --accent-primary: #6c5ce7;
  --accent-secondary: #00e5ff;
  --text-primary: #ffffff;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --gradient-primary: linear-gradient(135deg, #6c5ce7, #00e5ff);
  --gradient-soft: linear-gradient(135deg, rgba(108, 92, 231, 0.3), rgba(0, 229, 255, 0.15));
  --font-body: "Inter", sans-serif;
  --font-heading: "Space Grotesk", sans-serif;
  --hero-size: clamp(3.2rem, 7vw, 4rem);
  --section-title: clamp(2.1rem, 4vw, 2.25rem);
  --card-title: 1.25rem;
  --text-base: 1rem;
  --radius-sm: 14px;
  --radius-md: 22px;
  --radius-lg: 32px;
  --shadow-soft: 0 20px 60px rgba(0, 0, 0, 0.28);
  --shadow-glow: 0 10px 40px rgba(108, 92, 231, 0.25);
  --container-width: 1200px;
  --space-section: 100px;
  --space-page-top-compact: 150px;
  --transition-base: 220ms ease;
  --transition-slow: 420ms ease;
  --navbar-height: 88px;
  --z-navbar: 50;
  --z-overlay: 45;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  background-color: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
  padding-top: 80px;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 20px 20px;
  animation: move-grid 8s linear infinite;
  will-change: background-position;
  pointer-events: none;
  z-index: -1;
}

body.menu-open,
body.menu-is-open {
  overflow: hidden;
}

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

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

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

main,
section {
  position: relative;
}

h1,
h2,
h3,
h4 {
  margin: 0 0 1rem;
  font-family: var(--font-heading);
  letter-spacing: -0.03em;
  line-height: 1.05;
}

h1 {
  font-size: var(--hero-size);
}

h2 {
  font-size: var(--section-title);
}

h3 {
  font-size: var(--card-title);
}

p {
  margin: 0 0 1rem;
  color: var(--text-secondary);
}

.container {
  width: min(var(--container-width), calc(100% - 40px));
  margin: 0 auto;
}

.page-shell--compact {
  padding-top: var(--space-page-top-compact);
}

.section {
  padding: var(--space-section) 0;
}

.section-sm {
  padding: 72px 0;
}

.grid {
  display: grid;
  gap: 24px;
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.cluster {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 40px;
  align-items: center;
}

.section-heading {
  max-width: 720px;
  margin-bottom: 40px;
}

.section-heading p {
  max-width: 620px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 18px;
  color: var(--accent-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-secondary));
}

.surface {
  background: rgba(17, 17, 24, 0.82);
  border: 1px solid rgba(31, 31, 42, 0.95);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-soft);
}

.surface--panel {
  padding: 32px;
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.metric strong {
  font-family: var(--font-heading);
  font-size: 2rem;
}

.site-nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: var(--z-navbar);
  transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.site-nav.is-scrolled {
  background: rgba(11, 11, 15, 0.9);
  border-bottom: 1px solid rgba(31, 31, 42, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 14px 50px rgba(0, 0, 0, 0.25);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--navbar-height);
  gap: 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-body);
  font-weight: 700;
  letter-spacing: -0.02em;
  transition: transform var(--transition-base);
}

.brand__mark {
  position: relative;
  display: grid;
  place-items: center;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background:
    radial-gradient(circle at top left, rgba(255, 255, 255, 0.08), transparent 42%),
    rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow:
    0 0 20px rgba(0, 200, 255, 0.15),
    0 12px 30px rgba(2, 6, 23, 0.4),
    0 0 0 1px rgba(255, 255, 255, 0.03) inset;
  overflow: hidden;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.brand__mark::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg, #00d4ff, #3b82f6, #7c3aed);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.brand__mark::after {
  content: "";
  position: absolute;
  inset: 6px auto auto 6px;
  width: 14px;
  height: 14px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0));
  opacity: 0.9;
  pointer-events: none;
}

.brand:hover .brand__mark,
.brand:focus-visible .brand__mark {
  transform: scale(1.05);
  border-color: rgba(255, 255, 255, 0.12);
  box-shadow:
    0 0 30px rgba(0, 200, 255, 0.3),
    0 16px 34px rgba(2, 6, 23, 0.45),
    0 0 0 1px rgba(255, 255, 255, 0.04) inset;
}

.brand__mark-icon {
  position: relative;
  z-index: 1;
  width: 26px;
  height: 26px;
  filter: drop-shadow(0 0 6px rgba(0, 212, 255, 0.14));
}

.brand__mark-track,
.brand__mark-flow,
.brand__mark-head,
.brand__mark-core {
  fill: none;
  vector-effect: non-scaling-stroke;
}

.brand__mark-track,
.brand__mark-flow,
.brand__mark-core {
  stroke-linecap: square;
  stroke-linejoin: round;
}

.brand__mark-head {
  stroke-linecap: square;
  stroke-linejoin: miter;
}

.brand__mark-track {
  stroke: rgba(255, 255, 255, 0.16);
  stroke-width: 1.9;
}

.brand__mark-track--two {
  stroke: rgba(255, 255, 255, 0.12);
}

.brand__mark-flow {
  stroke-width: 2.6;
}

.brand__mark-head {
  stroke-width: 2.5;
}

.brand__mark-core {
  stroke: #3b82f6;
  stroke-width: 2.2;
  opacity: 0.95;
}

.brand__mark-flow--one,
.brand__mark-head--one,
.brand__mark-node--one {
  stroke: #3b82f6;
  fill: #00d4ff;
}

.brand__mark-flow--two,
.brand__mark-head--two,
.brand__mark-node--two {
  stroke: #7c3aed;
  fill: #7c3aed;
}

.brand__text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0;
}

.brand__name {
  font-size: 1.45rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: -0.035em;
  line-height: 1;
  text-shadow: 0 0 8px rgba(255, 255, 255, 0.15);
}

.brand__meta {
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.6875rem;
  font-weight: 400;
  letter-spacing: 0.28em;
  line-height: 1;
  text-transform: uppercase;
}

.nav-links {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px;
  border: 1px solid rgba(31, 31, 42, 0.8);
  border-radius: 999px;
  background: rgba(15, 15, 20, 0.72);
}

.nav-link {
  padding: 10px 16px;
  color: var(--text-secondary);
  font-size: 0.95rem;
  transition: color var(--transition-base), background var(--transition-base);
  border-radius: 999px;
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.button,
.button-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 600;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base), background var(--transition-base), color var(--transition-base);
}

.button {
  background: var(--gradient-primary);
  color: var(--text-primary);
  box-shadow: 0 12px 32px rgba(108, 92, 231, 0.28);
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
  box-shadow: 0 18px 48px rgba(108, 92, 231, 0.4);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.02);
  border-color: rgba(31, 31, 42, 0.95);
  color: var(--text-primary);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(108, 92, 231, 0.72);
  box-shadow: 0 14px 36px rgba(108, 92, 231, 0.2);
}

.menu-toggle {
  display: none;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 14px;
  border: 1px solid rgba(31, 31, 42, 0.95);
  background: rgba(17, 17, 24, 0.92);
  color: var(--text-primary);
}

.menu-toggle svg {
  width: 24px;
  height: 24px;
  pointer-events: none;
}

.menu-toggle .close {
  display: none;
}

.menu-toggle__line {
  width: 18px;
  height: 2px;
  background: currentColor;
  position: relative;
  transition: transform var(--transition-base), background var(--transition-base);
}

.menu-toggle__line::before,
.menu-toggle__line::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition-base), top var(--transition-base), bottom var(--transition-base);
}

.menu-toggle__line::before {
  top: -6px;
}

.menu-toggle__line::after {
  bottom: -6px;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__line,
.menu-toggle.is-active .menu-toggle__line {
  background: transparent;
}

.menu-toggle[aria-expanded="true"] .menu-toggle__line::before,
.menu-toggle.is-active .menu-toggle__line::before {
  top: 0;
  transform: rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle__line::after,
.menu-toggle.is-active .menu-toggle__line::after {
  bottom: 0;
  transform: rotate(-45deg);
}

.menu-toggle[aria-expanded="true"] .open,
.menu-toggle.is-active .open {
  display: none;
}

.menu-toggle[aria-expanded="true"] .close,
.menu-toggle.is-active .close {
  display: block;
}

.mobile-menu {
  position: fixed;
  inset: calc(var(--navbar-height) + 8px) 16px auto;
  z-index: var(--z-overlay);
  padding: 18px;
  background: rgba(15, 15, 20, 0.96);
  border: 1px solid rgba(31, 31, 42, 0.95);
  border-radius: 24px;
  box-shadow: var(--shadow-soft);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity var(--transition-base), transform var(--transition-base), visibility var(--transition-base);
}

.mobile-menu.is-open,
.mobile-menu.is-active {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.mobile-menu__links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.mobile-menu__links .nav-link {
  width: 100%;
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.02);
}

.mobile-menu__overlay {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-overlay) - 1);
  background: rgba(0, 0, 0, 0.42);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-menu__overlay.is-open,
.mobile-menu__overlay.is-active {
  opacity: 1;
  visibility: visible;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  width: fit-content;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(108, 92, 231, 0.14);
  color: #c9c3ff;
  font-size: 0.8rem;
  font-weight: 600;
}

.badge--cyan {
  background: rgba(0, 229, 255, 0.12);
  color: #b2f8ff;
}

.footer {
  padding: 32px 0 28px;
  background: rgba(15, 15, 20, 0.98);
  border-top: 1px solid rgba(31, 31, 42, 0.95);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.2fr repeat(3, 1fr);
  gap: 28px;
}

.footer__intro {
  margin-top: 18px;
}

.footer__title {
  margin-bottom: 14px;
  font-size: 1rem;
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer__list a {
  color: var(--text-secondary);
  transition: color var(--transition-base);
}

.footer__list a:hover {
  color: var(--text-primary);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 28px;
  margin-top: 28px;
  border-top: 1px solid rgba(31, 31, 42, 0.95);
  color: var(--text-muted);
  font-size: 0.9rem;
}

@keyframes move-grid {
  0% {
    background-position: 0 0;
  }

  100% {
    background-position: 20px 20px;
  }
}

@keyframes khataFlowPulse {
  0%,
  100% {
    opacity: 0.4;
    transform: scaleX(0.98);
  }

  50% {
    opacity: 1;
    transform: scaleX(1);
  }
}

@keyframes codePreviewFade {
  from {
    opacity: 0;
    transform: translateY(6px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.page-hero {
  padding: 36px 0 32px;
}

.page-hero__inner {
  padding: 42px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at top right, rgba(0, 229, 255, 0.12), transparent 28%),
    radial-gradient(circle at left bottom, rgba(108, 92, 231, 0.18), transparent 34%),
    rgba(17, 17, 24, 0.92);
  border: 1px solid rgba(31, 31, 42, 0.95);
  overflow: hidden;
}

.page-hero__inner h1 {
  max-width: 720px;
}

.page-hero__inner p {
  max-width: 620px;
  font-size: 1.04rem;
}

.khata-terminal,
.khata-code,
.khata-flow {
  margin-top: 28px;
}

.khata-terminal {
  padding: 0;
  overflow: hidden;
}

.khata-terminal__top,
.khata-code__header,
.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  background: rgba(255, 255, 255, 0.02);
}

.khata-terminal__dots {
  display: inline-flex;
  gap: 8px;
}

.khata-terminal__dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
}

.khata-terminal__dots span:nth-child(1) {
  background: #ff6b6b;
}

.khata-terminal__dots span:nth-child(2) {
  background: #ffd166;
}

.khata-terminal__dots span:nth-child(3) {
  background: #06d6a0;
}

.khata-terminal__label,
.khata-code__status,
.code-preview__status {
  color: var(--text-muted);
  font-size: 0.88rem;
}

.khata-terminal__body {
  display: grid;
  gap: 16px;
  padding: 20px 22px 24px;
  font-family: var(--font-heading);
}

.khata-terminal__line {
  color: var(--text-primary);
  font-size: 0.95rem;
}

.khata-terminal__line--muted {
  color: var(--text-secondary);
  font-family: var(--font-body);
}

.khata-terminal__prompt {
  margin-right: 10px;
  color: var(--accent-secondary);
}

.khata-terminal__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.khata-terminal__stat {
  padding: 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.khata-terminal__stat strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.15rem;
}

.khata-terminal__stat span {
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.88rem;
}

.code-preview {
  margin-top: 28px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 16px;
  background: linear-gradient(180deg, #0b0f1a, rgba(12, 16, 29, 0.96));
  box-shadow: 0 18px 40px rgba(12, 18, 34, 0.36), 0 0 30px rgba(108, 92, 231, 0.12);
}

.code-header {
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-size: 0.95rem;
}

.code-preview__status {
  color: var(--accent-secondary);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: lowercase;
}

.code-body {
  display: grid;
  gap: 10px;
  padding: 20px 22px 24px;
  font-family: "Courier New", Courier, monospace;
  font-size: 0.95rem;
  line-height: 1.7;
  color: #dbe4ff;
}

.code-preview__line {
  opacity: 0;
  transform: translateY(6px);
  animation: codePreviewFade 0.45s ease forwards;
}

.code-body .code-preview__line:nth-child(1) {
  animation-delay: 0.05s;
}

.code-body .code-preview__line:nth-child(2) {
  animation-delay: 0.15s;
}

.code-body .code-preview__line:nth-child(3) {
  animation-delay: 0.25s;
}

.code-body .code-preview__line:nth-child(4) {
  animation-delay: 0.35s;
}

.code-body .code-preview__line:nth-child(5) {
  animation-delay: 0.45s;
}

.code-body .code-preview__line:nth-child(6) {
  animation-delay: 0.55s;
}

.code-preview__token--keyword,
.khata-code__token--keyword {
  color: #a78bfa;
}

.code-preview__token--function {
  color: #67e8f9;
}

.code-preview__token--string,
.khata-code__token--string {
  color: #86efac;
}

.khata-code {
  padding: 0;
  overflow: hidden;
}

.khata-code__header span:first-child {
  color: var(--text-primary);
  font-family: var(--font-heading);
}

.khata-code__snippet {
  margin: 0;
  padding: 22px;
  overflow-x: auto;
  color: #dbe4ff;
  font-size: 0.95rem;
  line-height: 1.8;
}

.khata-code__line {
  display: block;
  white-space: pre;
}

.khata-code__token--fn,
.khata-code__token--accent {
  color: #22d3ee;
}

.khata-flow {
  position: relative;
  padding: 32px;
  overflow: hidden;
}

.khata-flow__track {
  position: absolute;
  inset: 64px 8% auto;
  height: 2px;
  background: linear-gradient(90deg, rgba(108, 92, 231, 0.16), rgba(0, 229, 255, 0.5), rgba(108, 92, 231, 0.16));
  animation: khataFlowPulse 5s ease-in-out infinite;
}

.khata-flow__grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.khata-flow__node {
  position: relative;
  padding: 20px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.khata-flow__step {
  display: inline-flex;
  margin-bottom: 14px;
  color: var(--accent-secondary);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.12em;
}

.khata-flow__node h3 {
  margin-bottom: 10px;
}

.khata-flow__node p {
  margin-bottom: 0;
  font-size: 0.95rem;
}

@media (max-width: 992px) {
  .split {
    grid-template-columns: 1fr;
  }

  .page-shell--compact {
    padding-top: 140px;
  }

  .khata-flow__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .nav-links,
  .nav-actions .button {
    display: none;
  }

  .menu-toggle {
    display: grid;
  }

  .section {
    padding: 80px 0;
  }

  .section-sm {
    padding: 64px 0;
  }

  .container {
    width: min(var(--container-width), calc(100% - 32px));
  }

  .page-hero__inner,
  .surface--panel,
  .khata-flow {
    padding: 24px;
  }

  .khata-terminal__stats,
  .khata-flow__grid,
  .footer__grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 480px) {
  .page-shell--compact {
    padding-top: 124px;
  }

  .cluster {
    flex-direction: column;
    align-items: stretch;
  }

  .cluster .button,
  .cluster .button-secondary {
    width: 100%;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  body::before {
    animation: none;
  }

  .khata-flow__track {
    animation: none;
  }
}