:root {
  --paper: #f3efe6;
  --paper-strong: #fffaf1;
  --ink: #142126;
  --ink-soft: #415057;
  --line: rgba(20, 33, 38, 0.12);
  --line-strong: rgba(20, 33, 38, 0.22);
  --signal: #cf5a32;
  --signal-deep: #ab3e1a;
  --teal: #1f6760;
  --teal-soft: #d8ebe8;
  --gold: #d5a13f;
  --mist: rgba(255, 255, 255, 0.66);
  --shadow: 0 24px 70px rgba(20, 33, 38, 0.09);
  --radius-xl: 32px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --radius-sm: 999px;
  --content-width: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Avenir Next", "Segoe UI Variable Text", "PingFang SC", "Noto Sans SC",
    "Hiragino Sans GB", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(213, 161, 63, 0.16), transparent 28%),
    radial-gradient(circle at 85% 10%, rgba(31, 103, 96, 0.16), transparent 24%),
    linear-gradient(180deg, #fcfaf5 0%, var(--paper) 48%, #f7f3eb 100%);
  min-height: 100vh;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(20, 33, 38, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(20, 33, 38, 0.03) 1px, transparent 1px);
  background-size: 36px 36px;
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 78%);
  pointer-events: none;
}

.page-shell {
  position: relative;
  z-index: 1;
  width: min(100%, 1440px);
  margin: 0 auto;
  padding: 20px 22px 56px;
}

.topbar,
.section,
.trust-strip,
.footer {
  width: min(100%, var(--content-width));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 16px;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 16px 18px;
  margin-top: 8px;
  border: 1px solid rgba(255, 255, 255, 0.64);
  background: rgba(255, 250, 241, 0.74);
  backdrop-filter: blur(16px);
  border-radius: 24px;
  box-shadow: 0 10px 36px rgba(20, 33, 38, 0.07);
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 14px;
  color: inherit;
  text-decoration: none;
}

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  font-weight: 800;
  font-size: 0.96rem;
  color: #fff7ef;
  background: linear-gradient(145deg, var(--signal), var(--teal));
}

.brand-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.brand-copy strong {
  font-size: 0.96rem;
  letter-spacing: 0.01em;
  line-height: 1.2;
}

.brand-copy span {
  color: var(--ink-soft);
  font-size: 0.75rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 18px;
}

.nav-links a,
.footer a {
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
}

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

.nav-links a.is-current {
  color: var(--ink);
  font-weight: 800;
}

.section {
  padding: 88px 0;
}

.subpage-hero {
  padding-bottom: 36px;
}

.subpage-hero .section-heading {
  max-width: 920px;
  gap: 18px;
}

.subpage-title {
  margin: 0;
  max-width: 15ch;
  font-family: "Iowan Old Style", "Palatino Linotype", "Baskerville", "Times New Roman",
    "Songti SC", "STSong", "Noto Serif SC", serif;
  font-size: clamp(2rem, 3vw, 3.2rem);
  font-weight: 540;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: #20383d;
  text-wrap: balance;
  text-shadow: 0 10px 22px rgba(20, 33, 38, 0.035);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.22fr) minmax(340px, 0.78fr);
  gap: 42px;
  align-items: start;
  min-height: calc(100vh - 120px);
  padding-top: 18px;
}

.hero-copy {
  max-width: 760px;
  padding-right: 12px;
}

.hero-copy h1,
.section-heading h2,
.cta-copy h2 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", "Baskerville", "Times New Roman",
    "Songti SC", "STSong", "Noto Serif SC", serif;
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.02em;
}

.hero-copy h1 {
  max-width: 15ch;
  font-size: clamp(2.1rem, 3.5vw, 3.55rem);
  font-weight: 540;
  line-height: 1.12;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  margin: 0 0 22px;
  padding: 0.48rem 0.92rem;
  border: 1px solid rgba(20, 33, 38, 0.1);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.64);
  color: rgba(20, 33, 38, 0.68);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.015em;
  box-shadow: 0 12px 30px rgba(20, 33, 38, 0.035);
}

.hero-title {
  display: flex;
  flex-direction: column;
  gap: 0.2em;
}

.hero-line {
  display: block;
  color: #20383d;
  text-shadow: 0 10px 22px rgba(20, 33, 38, 0.04);
}

.hero-line-accent {
  color: transparent;
  background-image: linear-gradient(135deg, #36565d 0%, #2f6660 54%, #b25c3d 100%);
  -webkit-background-clip: text;
  background-clip: text;
  position: relative;
}

.hero-line-accent::after {
  content: "";
  position: absolute;
  left: 0.02em;
  bottom: -0.2em;
  width: 3.4em;
  height: 0.08em;
  border-radius: 999px;
  background: linear-gradient(90deg, rgba(31, 103, 96, 0.28), rgba(207, 90, 50, 0.22));
}

.eyebrow {
  margin: 0 0 18px;
  color: var(--signal-deep);
  font-size: 0.85rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-weight: 700;
}

.lead,
.section-heading p,
.cta-copy p,
.info-card p,
.stack-card li,
.capability-card p,
.trust-card p,
.mode-highlight p,
.mode-details li,
.cta-card p {
  color: var(--ink-soft);
  line-height: 1.7;
}

.lead {
  max-width: 42rem;
  margin: 26px 0 0;
  font-size: 1rem;
  color: rgba(20, 33, 38, 0.74);
}

.hero-actions,
.cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 0 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  transition: transform 180ms ease, background-color 180ms ease, border-color 180ms ease,
    color 180ms ease;
}

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

.button-solid {
  color: #fff7ef;
  background: linear-gradient(145deg, var(--signal), var(--signal-deep));
  box-shadow: 0 12px 28px rgba(171, 62, 26, 0.22);
}

.button-ghost {
  color: var(--ink);
  border-color: var(--line-strong);
  background: rgba(255, 255, 255, 0.46);
}

.tag-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.tag-row li,
.scene-band span,
.footer-meta span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--ink-soft);
  font-size: 0.88rem;
  background: rgba(255, 255, 255, 0.5);
}

.hero-panel {
  display: flex;
  justify-content: flex-end;
  padding-left: 12px;
  padding-top: 4px;
}

.panel-card,
.info-card,
.stack-card,
.capability-card,
.trust-card,
.cta-card,
.mode-shell {
  border: 1px solid rgba(255, 255, 255, 0.84);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.82), rgba(255, 250, 241, 0.78));
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.command-center {
  width: min(100%, 530px);
  padding: 28px;
}

.panel-head,
.monitor-title,
.signal-grid,
.section-heading,
.mode-highlight,
.cta-card {
  display: flex;
  flex-direction: column;
}

.panel-head {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.panel-kicker,
.snippet-label,
.mode-highlight-label {
  color: var(--ink-soft);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.status-pill {
  display: inline-flex;
  align-items: center;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 800;
}

.status-running {
  color: var(--teal);
  background: var(--teal-soft);
}

.monitor-title {
  gap: 6px;
  margin-top: 22px;
}

.monitor-title strong {
  font-size: 1.25rem;
}

.monitor-title span {
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.step-list {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.step-item {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 14px;
  align-items: start;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}

.step-item:first-child {
  border-top: 0;
}

.step-dot {
  width: 14px;
  height: 14px;
  margin-top: 4px;
  border-radius: 50%;
  border: 2px solid rgba(20, 33, 38, 0.16);
  background: transparent;
}

.step-item.active .step-dot {
  background: var(--signal);
  border-color: rgba(207, 90, 50, 0.36);
  box-shadow: 0 0 0 7px rgba(207, 90, 50, 0.12);
}

.step-item strong {
  display: block;
  margin-bottom: 6px;
}

.step-item p,
.evidence-snippet p,
.evidence-snippet small {
  margin: 0;
}

.signal-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 26px;
}

.signal-grid article {
  padding: 15px 14px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--line);
}

.signal-grid span {
  color: var(--ink-soft);
  font-size: 0.82rem;
}

.signal-grid strong {
  margin-top: 8px;
  font-size: 1.5rem;
}

.evidence-snippet {
  margin-top: 26px;
  padding: 18px;
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(31, 103, 96, 0.09), rgba(255, 255, 255, 0.72));
  border: 1px solid rgba(31, 103, 96, 0.14);
}

.evidence-snippet p {
  margin-top: 10px;
  font-weight: 650;
  color: var(--ink);
  line-height: 1.6;
}

.evidence-snippet small {
  display: block;
  margin-top: 10px;
  color: var(--ink-soft);
}

.trust-strip {
  padding: 20px 24px;
  border: 1px solid rgba(31, 103, 96, 0.16);
  border-radius: 24px;
  background: linear-gradient(90deg, rgba(31, 103, 96, 0.08), rgba(255, 255, 255, 0.42));
}

.trust-strip p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-soft);
}

.section-heading {
  gap: 16px;
  max-width: 800px;
}

.section-heading h2,
.cta-copy h2 {
  font-size: clamp(2.2rem, 4.3vw, 4rem);
}

.card-grid,
.solution-grid,
.capability-grid,
.trust-grid,
.contact-grid,
.two-up,
.three-up {
  display: grid;
  gap: 18px;
  margin-top: 34px;
}

.four-up {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

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

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

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

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

.info-card,
.stack-card,
.capability-card,
.trust-card {
  padding: 26px;
}

.card-index,
.stack-tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 42px;
  height: 42px;
  border-radius: 12px;
  background: rgba(20, 33, 38, 0.06);
  color: var(--signal-deep);
  font-weight: 800;
}

.info-card h3,
.stack-card h3,
.capability-card h3,
.trust-card h3,
.mode-highlight h3 {
  margin: 18px 0 10px;
  font-size: 1.34rem;
}

.stack-card ul,
.mode-details ul {
  margin: 18px 0 0;
  padding-left: 18px;
}

.stack-card li + li,
.mode-details li + li {
  margin-top: 8px;
}

.modes-section {
  padding-top: 74px;
}

.mode-shell {
  margin-top: 32px;
  padding: 20px;
}

.mode-tabs {
  display: inline-grid;
  grid-auto-flow: column;
  gap: 10px;
  padding: 8px;
  border-radius: 18px;
  background: rgba(20, 33, 38, 0.05);
}

.mode-tab {
  min-width: 120px;
  min-height: 44px;
  padding: 0 16px;
  border: 0;
  border-radius: 14px;
  background: transparent;
  color: var(--ink-soft);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.mode-tab.is-active {
  color: var(--ink);
  background: rgba(255, 255, 255, 0.9);
  box-shadow: 0 10px 26px rgba(20, 33, 38, 0.08);
}

.mode-panel {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 18px;
  margin-top: 20px;
}

.mode-highlight,
.mode-details article {
  padding: 24px;
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.56);
  border: 1px solid var(--line);
}

.mode-details {
  display: grid;
  gap: 18px;
}

.mode-details span {
  color: var(--signal-deep);
  font-size: 0.84rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.scene-band {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.stack-flow {
  display: grid;
  gap: 18px;
  margin-top: 34px;
}

.text-link {
  display: inline-flex;
  margin-top: 14px;
  color: var(--signal-deep);
  font-weight: 700;
  text-decoration: none;
}

.text-link:hover {
  text-decoration: underline;
}

.cta-card {
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 30px;
  background:
    radial-gradient(circle at top right, rgba(213, 161, 63, 0.14), transparent 36%),
    linear-gradient(155deg, rgba(31, 103, 96, 0.08), rgba(255, 250, 241, 0.92));
}

.cta-copy {
  max-width: 760px;
}

.footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 36px 0 8px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-brand span {
  color: var(--ink-soft);
}

.footer-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 560ms ease, transform 560ms ease;
}

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

@media (max-width: 1100px) {
  .hero,
  .mode-panel,
  .cta-card,
  .solution-grid,
  .trust-grid,
  .capability-grid,
  .four-up {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
    padding-top: 34px;
    gap: 28px;
  }

  .hero-copy h1 {
    max-width: 100%;
  }

  .hero-copy,
  .hero-panel {
    padding-right: 0;
    padding-left: 0;
  }

  .hero-panel {
    justify-content: flex-start;
  }

  .cta-card,
  .footer {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 860px) {
  .page-shell {
    padding-inline: 16px;
  }

  .topbar {
    top: 10px;
    flex-wrap: wrap;
  }

  .nav-links {
    order: 3;
    width: 100%;
    overflow: auto;
    padding-bottom: 2px;
  }

  .desktop-only {
    display: none;
  }
}

@media (max-width: 640px) {
  .section {
    padding: 66px 0;
  }

  .command-center,
  .mode-shell,
  .cta-card,
  .info-card,
  .stack-card,
  .capability-card,
  .trust-card {
    padding: 22px;
  }

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

  .mode-tabs {
    width: 100%;
    grid-auto-flow: row;
  }

  .mode-tab {
    width: 100%;
  }
}