:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-soft: #eef0f4;
  --ink: #111319;
  --muted: #686e7a;
  --line: #dfe2e8;
  --accent: #536dfe;
  --accent-2: #7c4dff;
  --accent-soft: rgba(83, 109, 254, 0.11);
  --dark: #101218;
  --dark-muted: #9aa1b1;
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 30px;
  --shadow: 0 24px 70px rgba(28, 35, 55, 0.1);
  --max: 1200px;
  --display: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --body: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: "SFMono-Regular", "Cascadia Code", Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

button,
a {
  font: inherit;
}

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

button {
  color: inherit;
}

::selection {
  background: var(--accent);
  color: white;
}

.shell {
  width: min(var(--max), calc(100% - 48px));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  z-index: 80;
  top: 0;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 72%, transparent);
  background: color-mix(in srgb, var(--bg) 86%, transparent);
  backdrop-filter: blur(20px) saturate(140%);
}

.nav {
  display: flex;
  min-height: 74px;
  align-items: center;
  gap: 28px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  font-size: 14px;
  font-weight: 760;
  letter-spacing: -0.025em;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--line));
  border-radius: 10px;
  background: var(--surface);
  color: var(--accent);
  box-shadow: 0 8px 22px color-mix(in srgb, var(--accent) 12%, transparent);
  font: 800 15px/1 var(--display);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 30px;
  margin-left: auto;
  color: var(--muted);
  font-size: 12px;
  font-weight: 600;
}

.nav-links a {
  position: relative;
  transition: color 160ms ease;
}

.nav-links a::after {
  position: absolute;
  right: 0;
  bottom: -7px;
  left: 0;
  height: 1px;
  background: var(--accent);
  content: "";
  opacity: 0;
  transform: scaleX(0.5);
  transition: opacity 160ms ease, transform 160ms ease;
}

.nav-links a:hover,
.nav-links a:focus-visible {
  color: var(--ink);
}

.nav-links a:hover::after,
.nav-links a:focus-visible::after {
  opacity: 1;
  transform: scaleX(1);
}

.lang-switch {
  display: inline-flex;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
}

.lang-switch button {
  min-width: 38px;
  padding: 6px 9px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.lang-switch button.active {
  background: var(--ink);
  color: white;
  box-shadow: 0 4px 12px rgba(15, 17, 23, 0.16);
}

.nav-cta {
  display: inline-flex;
  min-height: 38px;
  align-items: center;
  gap: 14px;
  padding: 8px 13px;
  border: 1px solid var(--ink);
  border-radius: 9px;
  background: var(--ink);
  color: white;
  font-size: 11px;
  font-weight: 700;
  transition: box-shadow 160ms ease, transform 160ms ease;
}

.nav-cta:hover,
.nav-cta:focus-visible {
  box-shadow: 0 10px 26px color-mix(in srgb, var(--accent) 25%, transparent);
  transform: translateY(-1px);
}

.menu-button {
  display: none;
  padding: 7px 11px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
  font-size: 11px;
  font-weight: 700;
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero::before {
  position: absolute;
  z-index: -2;
  inset: 0;
  background-image:
    linear-gradient(color-mix(in srgb, var(--line) 50%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--line) 50%, transparent) 1px, transparent 1px);
  background-position: center;
  background-size: 64px 64px;
  content: "";
  mask-image: linear-gradient(to bottom, black, transparent 92%);
}

.hero-grid {
  display: grid;
  min-height: 760px;
  padding-block: clamp(78px, 9vw, 126px) clamp(74px, 9vw, 112px);
  grid-template-columns: minmax(0, 0.84fr) minmax(470px, 1.16fr);
  gap: clamp(54px, 7vw, 96px);
  align-items: center;
}

.hero-copy {
  position: relative;
  z-index: 2;
}

.eyebrow,
.section-label,
.card-kicker {
  margin: 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
}

.eyebrow::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
  content: "";
}

.hero h1 {
  max-width: 720px;
  margin: 27px 0 23px;
  font-family: var(--display);
  font-size: clamp(58px, 7.4vw, 104px);
  font-weight: 650;
  letter-spacing: -0.072em;
  line-height: 0.93;
  text-wrap: balance;
}

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

.hero-description {
  max-width: 590px;
  margin: 0;
  color: var(--muted);
  font-size: clamp(15px, 1.45vw, 18px);
  line-height: 1.72;
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 11px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  padding: 12px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 12px;
  font-weight: 750;
  transition: border-color 160ms ease, box-shadow 160ms ease, color 160ms ease, transform 160ms ease;
}

.button:hover,
.button:focus-visible {
  transform: translateY(-2px);
}

.button-primary {
  border-color: var(--accent);
  background: var(--accent);
  color: white;
  box-shadow: 0 13px 32px color-mix(in srgb, var(--accent) 25%, transparent);
}

.button-primary:hover,
.button-primary:focus-visible {
  box-shadow: 0 18px 42px color-mix(in srgb, var(--accent) 34%, transparent);
  color: white;
}

.button-secondary {
  border-color: var(--line);
  background: color-mix(in srgb, var(--surface) 80%, transparent);
  color: var(--ink);
  backdrop-filter: blur(10px);
}

.button-secondary:hover,
.button-secondary:focus-visible {
  border-color: color-mix(in srgb, var(--accent) 45%, var(--line));
  background: var(--surface);
}

.hero-note {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin: 31px 0 0;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.06em;
}

.hero-note span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.hero-note span::before {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-2);
  content: "";
}

.product-stage {
  position: relative;
  min-width: 0;
}

.product-window {
  position: relative;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--line) 86%, transparent);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.window-bar {
  display: flex;
  min-height: 44px;
  align-items: center;
  gap: 7px;
  padding: 0 14px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 8px;
  letter-spacing: 0.08em;
}

.window-bar i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #ff6b6b;
}

.window-bar i:nth-child(2) {
  background: #ffd166;
}

.window-bar i:nth-child(3) {
  background: #75d58a;
}

.window-bar span {
  margin-left: auto;
}

.proof-strip {
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--surface) 72%, transparent);
}

.proof-inner {
  display: grid;
  min-height: 112px;
  grid-template-columns: repeat(4, 1fr);
}

.proof-item {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 13px;
  padding: 20px 24px;
  border-right: 1px solid var(--line);
}

.proof-item:first-child {
  border-left: 1px solid var(--line);
}

.proof-index {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 9px;
}

.proof-item b {
  font-size: 12px;
  font-weight: 690;
}

.section {
  padding-block: clamp(92px, 11vw, 150px);
  scroll-margin-top: 90px;
}

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

.section-head {
  display: grid;
  margin-bottom: clamp(50px, 7vw, 78px);
  grid-template-columns: 0.34fr 1.06fr 0.6fr;
  gap: clamp(30px, 5vw, 70px);
  align-items: start;
}

.section-head h2,
.final-cta h2 {
  margin: -10px 0 0;
  font-family: var(--display);
  font-size: clamp(44px, 5.8vw, 76px);
  font-weight: 630;
  letter-spacing: -0.06em;
  line-height: 1;
  text-wrap: balance;
}

.section-head h2 span,
.final-cta h2 span {
  color: var(--accent);
}

.section-head > p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
}

.capability-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 16px;
}

.capability-card {
  position: relative;
  min-height: 330px;
  overflow: hidden;
  padding: 27px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--surface) 92%, transparent);
}

.capability-card.large {
  grid-column: span 7;
}

.capability-card.medium {
  grid-column: span 5;
}

.capability-card.half {
  grid-column: span 6;
}

.capability-card h3 {
  max-width: 520px;
  margin: 22px 0 10px;
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 650;
  letter-spacing: -0.045em;
  line-height: 1.08;
}

.capability-card > p:not(.card-kicker) {
  max-width: 560px;
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.72;
}

.card-visual {
  position: absolute;
  right: 24px;
  bottom: 22px;
  left: 24px;
  min-height: 120px;
  border: 1px solid color-mix(in srgb, var(--line) 85%, transparent);
  border-radius: 12px;
  background: var(--surface-soft);
}

.workflow-section {
  overflow: hidden;
  background: var(--dark);
  color: white;
}

.workflow-section .section-label,
.workflow-section .section-head > p:last-child {
  color: var(--dark-muted);
}

.workflow-section .section-head h2 {
  color: white;
}

.workflow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.workflow-step {
  min-height: 300px;
  padding: 23px;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.workflow-step:first-child {
  border-left: 1px solid rgba(255, 255, 255, 0.12);
}

.workflow-step > span {
  color: #71798c;
  font-family: var(--mono);
  font-size: 9px;
}

.step-symbol {
  display: grid;
  width: 50px;
  height: 50px;
  margin: 58px 0 32px;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--accent);
  font-family: var(--mono);
  font-size: 16px;
}

.workflow-step h3 {
  margin: 0 0 9px;
  font-size: 17px;
  font-weight: 630;
}

.workflow-step p {
  margin: 0;
  color: var(--dark-muted);
  font-size: 12px;
  line-height: 1.68;
}

.scenario-list {
  border-top: 1px solid var(--line);
}

.scenario-row {
  display: grid;
  min-height: 128px;
  padding: 25px 0;
  border-bottom: 1px solid var(--line);
  grid-template-columns: 50px minmax(190px, 0.65fr) minmax(280px, 1.35fr) 30px;
  gap: 24px;
  align-items: center;
}

.scenario-row > span:first-child {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 9px;
}

.scenario-row h3 {
  margin: 0;
  font-size: 20px;
  font-weight: 630;
  letter-spacing: -0.025em;
}

.scenario-row p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.scenario-row > span:last-child {
  color: var(--accent);
  font-size: 18px;
}

.final-wrap {
  padding-block: clamp(70px, 9vw, 110px);
}

.final-cta {
  position: relative;
  min-height: 560px;
  display: flex;
  overflow: hidden;
  padding: clamp(42px, 7vw, 84px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(circle at 82% 12%, color-mix(in srgb, var(--accent) 30%, transparent), transparent 27rem),
    var(--dark);
  color: white;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
}

.final-cta::after {
  position: absolute;
  right: -140px;
  bottom: -190px;
  width: 480px;
  height: 480px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  box-shadow: 0 0 0 58px rgba(255, 255, 255, 0.025), 0 0 0 116px rgba(255, 255, 255, 0.014);
  content: "";
}

.final-cta > * {
  position: relative;
  z-index: 1;
}

.final-cta .eyebrow {
  color: var(--dark-muted);
}

.final-cta h2 {
  max-width: 13ch;
  margin-top: 26px;
}

.final-cta > p:not(.eyebrow) {
  max-width: 620px;
  margin: 22px 0 0;
  color: var(--dark-muted);
  font-size: 15px;
}

.final-cta .button-secondary {
  border-color: rgba(255, 255, 255, 0.18);
  background: rgba(255, 255, 255, 0.05);
  color: white;
}

.final-cta .button-secondary:hover {
  border-color: rgba(255, 255, 255, 0.35);
  background: rgba(255, 255, 255, 0.1);
}

footer {
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: flex;
  min-height: 122px;
  align-items: center;
  justify-content: space-between;
  gap: 25px;
  color: var(--muted);
  font-size: 10px;
}

.footer-inner p {
  font-family: var(--mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 650ms ease, transform 650ms ease;
}

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

@media (max-width: 980px) {
  .hero-grid {
    min-height: auto;
    grid-template-columns: 1fr;
  }

  .hero-copy {
    max-width: 780px;
  }

  .product-stage {
    max-width: 820px;
  }

  .section-head {
    grid-template-columns: 0.3fr 1fr;
  }

  .section-head > p:last-child {
    grid-column: 2;
  }

  .capability-card.large,
  .capability-card.medium,
  .capability-card.half {
    grid-column: span 6;
  }

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

  .workflow-step:nth-child(3) {
    border-left: 1px solid rgba(255, 255, 255, 0.12);
  }
}

@media (max-width: 760px) {
  .nav {
    min-height: 66px;
  }

  .nav-links {
    position: absolute;
    top: 66px;
    right: 16px;
    left: 16px;
    display: none;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--surface);
    box-shadow: var(--shadow);
    flex-direction: column;
  }

  .nav-links.open {
    display: flex;
  }

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

  .nav-cta {
    display: none;
  }

  .hero h1 {
    font-size: clamp(52px, 15vw, 76px);
  }

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

  .proof-item:nth-child(3) {
    border-left: 1px solid var(--line);
  }

  .proof-item:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .section-head {
    grid-template-columns: 1fr;
    gap: 25px;
  }

  .section-head > p:last-child {
    grid-column: auto;
  }

  .section-head h2,
  .final-cta h2 {
    font-size: clamp(42px, 12vw, 62px);
  }

  .capability-card.large,
  .capability-card.medium,
  .capability-card.half {
    grid-column: 1 / -1;
  }

  .scenario-row {
    grid-template-columns: 36px 1fr 24px;
    gap: 14px;
  }

  .scenario-row p {
    grid-column: 2 / 4;
  }

  .footer-inner {
    padding-block: 30px;
    flex-direction: column;
    justify-content: center;
  }
}

@media (max-width: 540px) {
  .shell {
    width: min(var(--max), calc(100% - 30px));
  }

  .brand span:last-child {
    display: none;
  }

  .lang-switch button {
    min-width: 34px;
  }

  .hero-grid {
    padding-block: 68px 74px;
  }

  .hero-actions,
  .cta-actions {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .proof-inner,
  .workflow-grid {
    grid-template-columns: 1fr;
  }

  .proof-item,
  .proof-item:first-child,
  .proof-item:nth-child(3) {
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
    border-left: 1px solid var(--line);
  }

  .workflow-step,
  .workflow-step:nth-child(3) {
    min-height: 235px;
    border-left: 1px solid rgba(255, 255, 255, 0.12);
  }

  .step-symbol {
    margin-block: 36px 25px;
  }

  .final-cta {
    min-height: 520px;
    border-radius: 20px;
  }
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.001ms !important;
  }

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