:root {
  color-scheme: dark;
  --bg: #0b1018;
  --bg-soft: #101827;
  --panel: rgba(14, 22, 35, 0.82);
  --panel-strong: #121b2b;
  --panel-border: rgba(214, 190, 156, 0.18);
  --text: #f6f1e8;
  --muted: rgba(246, 241, 232, 0.7);
  --soft: rgba(246, 241, 232, 0.54);
  --accent: #c7924e;
  --accent-soft: rgba(199, 146, 78, 0.16);
  --accent-strong: #f3c690;
  --line: rgba(255, 255, 255, 0.08);
  --shadow: 0 24px 80px rgba(0, 0, 0, 0.34);
  --radius-lg: 32px;
  --radius-md: 22px;
  --radius-sm: 14px;
  --font-sans: "IBM Plex Sans", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
  --font-serif: "Iowan Old Style", "Songti SC", "Noto Serif SC", serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-width: 320px;
  overflow-x: clip;
  font-family: var(--font-sans);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(199, 146, 78, 0.14), transparent 26%),
    radial-gradient(circle at 85% 20%, rgba(72, 120, 188, 0.18), transparent 24%),
    linear-gradient(180deg, #0b1018 0%, #0d1420 30%, #0a0f16 100%);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.5), transparent 85%);
  opacity: 0.25;
}

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

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

.page-shell {
  position: relative;
  isolation: isolate;
  overflow-x: clip;
}

.section {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 0 0 112px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 24px 0 18px;
  backdrop-filter: blur(18px);
}

.site-header::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.14), transparent);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-text {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}

.brand-logo {
  width: 38px;
  height: 38px;
  flex: 0 0 auto;
  display: block;
}

.brand-mark,
.eyebrow,
.section-kicker,
.capability-eyebrow {
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-strong);
}

.brand-name {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 22px;
  color: var(--muted);
}

.site-nav a {
  position: relative;
  padding: 6px 0;
}

.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 180ms ease;
}

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

.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: currentColor;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(400px, 0.95fr);
  gap: 48px;
  align-items: center;
  padding-top: 74px;
}

.hero-copy h1,
.section-heading h2,
.section-copy h2,
.cta-card h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 5vw, 4.25rem);
  line-height: 1;
  letter-spacing: -0.03em;
}

.hero-copy h1 {
  max-width: 12ch;
}

.hero-lead,
.section-copy p,
.capability-panel p,
.workflow-card p,
.trust-card p,
.scenario-card p,
.need-card p,
.download-card span,
.price-card p,
.cta-card p {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
  font-size: 0.98rem;
}

.hero-copy {
  display: flex;
  flex-direction: column;
  gap: 22px;
}

.hero-support {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  flex-wrap: wrap;
  gap: 12px;
  padding: 10px 14px;
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(199, 146, 78, 0.16), rgba(72, 120, 188, 0.08));
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
}

.hero-support-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  color: var(--accent-strong);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.hero-support strong {
  font-size: 0.96rem;
  line-height: 1.4;
  letter-spacing: 0.01em;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

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

.button-primary {
  background: linear-gradient(135deg, #d3a063 0%, #ba7f39 100%);
  color: #160f07;
  box-shadow: 0 18px 42px rgba(190, 125, 54, 0.24);
}

.button-secondary {
  border-color: var(--panel-border);
  background: rgba(255, 255, 255, 0.04);
}

.hero-points {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.hero-points li,
.workflow-pill-row span {
  padding: 10px 14px;
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--muted);
}

.hero-stage {
  position: relative;
  min-height: 620px;
}

.stage-panel {
  position: absolute;
  border-radius: var(--radius-lg);
  border: 1px solid var(--panel-border);
  background: linear-gradient(180deg, rgba(20, 31, 48, 0.96), rgba(9, 15, 25, 0.92));
  box-shadow: var(--shadow);
}

.stage-panel-back {
  inset: 42px 72px 84px 0;
  padding: 26px;
  transform: rotate(-6deg);
}

.stage-panel-front {
  inset: 0 0 0 96px;
  padding: 22px;
}

.panel-tag {
  display: inline-flex;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent-strong);
  font-size: 0.88rem;
}

.panel-line {
  height: 11px;
  margin-top: 18px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
}

.panel-line.long {
  width: 72%;
}

.panel-stack {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.panel-stack span {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.05);
  color: var(--muted);
}

.terminal-bar {
  display: flex;
  gap: 7px;
}

.terminal-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.24);
}

.workflow-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.signal-card {
  margin-top: 24px;
  padding: 20px;
  border-radius: var(--radius-md);
  background:
    linear-gradient(135deg, rgba(199, 146, 78, 0.16), rgba(72, 120, 188, 0.08)),
    rgba(255, 255, 255, 0.03);
  border: 1px solid var(--panel-border);
}

.signal-card small,
.stage-grid small,
.comparison-label,
.step-index {
  color: var(--accent-strong);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.signal-card strong,
.stage-grid strong,
.capability-panel h3,
.workflow-card h3,
.trust-card h3,
.scenario-card h3,
.need-card strong,
.download-card strong,
.price-card strong,
.comparison-column strong {
  display: block;
  margin-top: 10px;
  font-size: 1.18rem;
  line-height: 1.25;
}

.signal-card p,
.stage-grid p {
  margin: 10px 0 0;
  color: var(--muted);
  line-height: 1.7;
}

.stage-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.stage-grid article {
  padding: 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.section-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 1.08fr);
  gap: 34px;
  align-items: start;
}

.section-copy {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.section-copy h2,
.section-heading h2,
.cta-card h2 {
  font-size: clamp(1.7rem, 3vw, 2.65rem);
  line-height: 1.08;
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: 18px;
  max-width: 820px;
  margin-bottom: 34px;
}

.comparison-card,
.capability-shell,
.download-shell,
.cta-card {
  padding: 28px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--panel-border);
  background: var(--panel);
  box-shadow: var(--shadow);
}

.comparison-card,
.need-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.comparison-column {
  padding: 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
}

.comparison-column ul,
.capability-points,
.price-list,
.site-footer p {
  margin: 0;
  padding: 0;
  list-style: none;
}

.comparison-column ul {
  display: grid;
  gap: 12px;
  margin-top: 18px;
  color: var(--muted);
}

.comparison-column li,
.capability-points li,
.price-list li {
  position: relative;
  padding-left: 18px;
  line-height: 1.7;
}

.comparison-column li::before,
.capability-points li::before,
.price-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.74em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.comparison-column.muted {
  background: rgba(255, 255, 255, 0.03);
}

.comparison-column.strong {
  background: linear-gradient(135deg, rgba(199, 146, 78, 0.15), rgba(72, 120, 188, 0.08));
}

.need-card,
.download-card,
.price-card {
  padding: 22px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.need-card.strong,
.price-card {
  background: linear-gradient(135deg, rgba(199, 146, 78, 0.14), rgba(72, 120, 188, 0.08));
}

.need-card p,
.price-card p {
  margin-top: 12px;
}

.price-list {
  display: grid;
  gap: 12px;
  margin-top: 14px;
  color: var(--muted);
}

.capability-shell {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 24px;
}

.capability-tabs {
  display: grid;
  gap: 12px;
}

.capability-tab {
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.03);
  color: var(--muted);
  text-align: left;
  cursor: pointer;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease;
}

.capability-tab:hover,
.capability-tab:focus-visible,
.capability-tab.active {
  color: var(--text);
  border-color: var(--panel-border);
  background: linear-gradient(135deg, rgba(199, 146, 78, 0.12), rgba(255, 255, 255, 0.04));
  transform: translateX(3px);
}

.capability-panel {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-height: 240px;
  padding: 8px 6px;
}

.capability-panel h3 {
  margin: 0;
  font-family: var(--font-serif);
  font-size: clamp(1.45rem, 2.4vw, 2.1rem);
}

.capability-points {
  display: grid;
  gap: 12px;
  color: var(--muted);
}

.workflow-grid,
.trust-list,
.scenario-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
}

.workflow-card,
.trust-card,
.scenario-card {
  min-height: 100%;
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
}

.workflow-card {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.step-index {
  font-size: 0.82rem;
}

.workflow-card h3,
.trust-card h3,
.scenario-card h3 {
  margin: 0;
}

.trust-list {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.scenario-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.download-shell {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.download-card,
.price-card {
  min-height: 100%;
}

.download-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease;
}

.download-card:hover,
.download-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--panel-border);
  background: linear-gradient(135deg, rgba(199, 146, 78, 0.12), rgba(255, 255, 255, 0.04));
}

.download-card small,
.price-card small {
  color: var(--accent-strong);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.download-card span {
  display: block;
  margin-top: auto;
}

.price-card {
  grid-column: 1 / -1;
}

.cta-section {
  padding-bottom: 72px;
}

.cta-card {
  position: relative;
  overflow: hidden;
}

.cta-card::before {
  content: "";
  position: absolute;
  inset: auto -14% -65% auto;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(199, 146, 78, 0.24), transparent 68%);
}

.site-footer {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 0 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  color: var(--soft);
  font-size: 0.95rem;
}

.footer-copy {
  display: grid;
  gap: 6px;
}

.footer-copy p {
  margin: 0;
}

.footer-record {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  transition:
    border-color 180ms ease,
    color 180ms ease,
    background 180ms ease;
}

.footer-record:hover,
.footer-record:focus-visible {
  color: var(--text);
  border-color: var(--panel-border);
  background: rgba(255, 255, 255, 0.08);
}

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

.js-ready .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 520ms ease,
    transform 520ms ease;
}

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

@media (max-width: 1080px) {
  .hero,
  .section-grid,
  .capability-shell {
    grid-template-columns: 1fr;
  }

  .hero-stage {
    min-height: 560px;
  }

  .stage-panel-back {
    inset: 24px 54px 60px 0;
  }

  .stage-panel-front {
    inset: 0 0 0 42px;
  }

  .workflow-grid,
  .need-grid,
  .download-shell {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .trust-list,
  .scenario-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .section,
  .site-header,
  .site-footer {
    width: min(100% - 32px, 100%);
  }

  .site-header {
    padding-top: 18px;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    min-width: 0;
    padding: 16px;
    border: 1px solid var(--panel-border);
    border-radius: 20px;
    background: rgba(11, 16, 24, 0.94);
    box-shadow: var(--shadow);
  }

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

  .hero {
    gap: 32px;
    padding-top: 52px;
  }

  .hero-copy {
    gap: 18px;
  }

  .hero-stage {
    display: grid;
    gap: 16px;
    min-height: auto;
  }

  .stage-panel {
    position: relative;
  }

  .stage-panel-back {
    display: none;
  }

  .stage-panel-front {
    inset: auto;
    padding: 20px;
  }

  .workflow-pill-row {
    margin-top: 18px;
    gap: 8px;
  }

  .workflow-pill-row span {
    padding: 8px 12px;
  }

  .signal-card {
    margin-top: 18px;
    padding: 18px;
  }

  .stage-grid {
    gap: 12px;
    margin-top: 14px;
  }

  .comparison-card,
  .need-grid,
  .download-shell {
    grid-template-columns: 1fr;
  }

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

  .capability-tab:hover,
  .capability-tab:focus-visible,
  .capability-tab.active {
    transform: none;
  }

  .capability-panel {
    min-height: 0;
    padding: 0;
  }

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

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

@media (max-width: 540px) {
  body::before {
    background-size: 56px 56px;
    opacity: 0.18;
  }

  .section {
    padding-bottom: 80px;
  }

  .site-header {
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .hero-copy h1,
  .section-heading h2,
  .section-copy h2,
  .cta-card h2 {
    letter-spacing: -0.02em;
  }

  .hero-copy h1 {
    max-width: none;
    font-size: clamp(2rem, 11vw, 2.8rem);
  }

  .section-heading h2,
  .section-copy h2,
  .cta-card h2 {
    font-size: clamp(1.5rem, 8vw, 2rem);
  }

  .hero {
    gap: 24px;
    padding-top: 40px;
  }

  .button {
    width: 100%;
  }

  .hero-support {
    align-self: stretch;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 22px;
  }

  .hero-support strong {
    font-size: 0.92rem;
  }

  .hero-actions,
  .hero-points {
    gap: 10px;
  }

  .hero-points {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .hero-points li:last-child {
    grid-column: 1 / -1;
  }

  .workflow-pill-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    align-items: stretch;
  }

  .workflow-pill-row span:last-child {
    grid-column: 1 / -1;
  }

  .capability-tabs {
    grid-template-columns: 1fr;
  }

  .stage-grid {
    grid-template-columns: 1fr;
  }

  .comparison-card,
  .capability-shell,
  .download-shell,
  .cta-card,
  .stage-panel-front,
  .stage-grid article,
  .workflow-card,
  .trust-card,
  .need-card,
  .download-card,
  .price-card,
  .scenario-card {
    padding: 18px;
  }
}