@font-face {
  font-family: "AppBase Sans";
  src: url("assets/fonts/noto-sans-sc-appbase.woff2") format("woff2");
  font-style: normal;
  font-weight: 400 800;
  font-display: swap;
}

:root {
  color-scheme: light;
  --blue-900: #07357d;
  --blue-800: #0648ad;
  --blue-700: #075ed8;
  --blue-600: #0876f9;
  --blue-500: #1684ff;
  --blue-300: #8bc5ff;
  --blue-200: #c7e2ff;
  --blue-100: #e8f3ff;
  --blue-50: #f4f9ff;
  --ink: #102442;
  --ink-soft: #405574;
  --ink-muted: #62738d;
  --border: #d8e7f7;
  --border-strong: #bdd9f7;
  --surface: #ffffff;
  --surface-soft: #f7fbff;
  --shadow-sm: 0 14px 36px rgba(18, 67, 124, 0.08);
  --shadow-md: 0 24px 64px rgba(16, 75, 151, 0.14);
  --radius-sm: 0.75rem;
  --radius-md: 1rem;
  --radius-lg: 1.4rem;
  --shell: 75rem;
  --header-height: 4.25rem;
  font-family:
    "AppBase Sans", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui,
    sans-serif;
  font-synthesis: none;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 1.25rem);
}

body {
  min-width: 20rem;
  margin: 0;
  overflow-x: clip;
  color: var(--ink);
  background: var(--surface);
  font-size: 1rem;
  line-break: strict;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
  -webkit-tap-highlight-color: transparent;
}

a:focus-visible {
  outline: 3px solid rgba(8, 118, 249, 0.5);
  outline-offset: 3px;
  border-radius: 0.4rem;
}

h1,
h2,
h3,
p,
dl,
dd {
  margin-top: 0;
}

h1,
h2,
h3 {
  color: var(--ink);
  line-height: 1.16;
  text-wrap: balance;
}

p {
  text-wrap: pretty;
}

.keep-word {
  white-space: nowrap;
}

.skip-link {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 1000;
  padding: 0.7rem 1rem;
  color: #fff;
  background: var(--ink);
  border-radius: 0.55rem;
  transform: translateY(-180%);
  transition: transform 160ms ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-shell {
  width: min(calc(100% - 3rem), var(--shell));
  margin-inline: auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.92);
  border-bottom: 1px solid rgba(207, 224, 242, 0.9);
  backdrop-filter: blur(16px);
}

.header-inner {
  display: flex;
  height: 100%;
  align-items: center;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.2rem;
  font-weight: 760;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 1.3rem;
  margin-right: auto;
}

.primary-nav a,
.footer-nav a {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  color: #344966;
  font-size: clamp(0.9375rem, calc(0.91rem + 0.1vw), 1rem);
  font-weight: 620;
}

.primary-nav a:hover,
.footer-nav a:hover {
  color: var(--blue-700);
}

.header-console {
  display: inline-flex;
  min-height: 2.65rem;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.05rem;
  color: #fff;
  background: var(--blue-600);
  border: 1px solid var(--blue-600);
  border-radius: 0.62rem;
  font-size: clamp(0.9375rem, calc(0.91rem + 0.1vw), 1rem);
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  box-shadow: 0 8px 20px rgba(8, 118, 249, 0.22);
  transition:
    background-color 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease;
}

.header-console:hover {
  background: var(--blue-800);
  border-color: var(--blue-800);
  box-shadow: 0 10px 24px rgba(8, 82, 186, 0.25);
}

.header-console-short {
  display: none;
}

.hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(3.5rem, 5vw, 4.75rem) 0 0;
  background:
    linear-gradient(rgba(89, 150, 217, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(89, 150, 217, 0.05) 1px, transparent 1px),
    linear-gradient(135deg, #f5faff 0%, #edf6ff 50%, #fff 100%);
  background-size:
    3rem 3rem,
    3rem 3rem,
    auto;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(28rem, 0.92fr);
  align-items: center;
  gap: clamp(2.5rem, 5vw, 4.5rem);
}

.hero-copy {
  min-width: 0;
}

.eyebrow {
  margin-bottom: 0.72rem;
  color: var(--blue-700);
  font-size: 0.74rem;
  font-weight: 780;
  letter-spacing: 0.14em;
}

.hero h1 {
  max-width: 41rem;
  margin-bottom: 1rem;
  font-size: clamp(2.5rem, calc(2.13rem + 1.52vw), 3.5rem);
  letter-spacing: -0.048em;
  word-break: keep-all;
}

.hero-lead {
  max-width: 38rem;
  margin-bottom: 1.65rem;
  color: var(--ink-soft);
  font-size: clamp(1rem, 1.4vw, 1.12rem);
  text-wrap: pretty;
}

.hero-actions,
.finale-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  width: max-content;
  max-width: 100%;
  min-height: 3rem;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.78rem 1.3rem;
  border: 1px solid transparent;
  border-radius: 0.65rem;
  font-size: clamp(0.9375rem, calc(0.91rem + 0.1vw), 1rem);
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  transition:
    color 160ms ease,
    background-color 160ms ease,
    border-color 160ms ease,
    box-shadow 160ms ease,
    transform 160ms ease;
}

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

.button-primary {
  color: #fff;
  background: var(--blue-600);
  border-color: var(--blue-600);
  box-shadow: 0 10px 26px rgba(8, 118, 249, 0.24);
}

.button-primary:hover {
  background: var(--blue-800);
  border-color: var(--blue-800);
}

.button-secondary {
  color: var(--blue-800);
  background: rgba(255, 255, 255, 0.9);
  border-color: var(--blue-300);
}

.button-secondary:hover {
  background: var(--blue-100);
  border-color: var(--blue-600);
}

.hero-proof {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  max-width: 41rem;
  margin: 2rem 0 0;
  padding-top: 1.25rem;
  gap: 1rem;
  border-top: 1px solid var(--border-strong);
}

.hero-proof div {
  min-width: 0;
}

.hero-proof dt {
  margin-bottom: 0.2rem;
  color: var(--ink);
  font-size: 0.81rem;
  font-weight: 750;
}

.hero-proof dd {
  margin-left: 0;
  color: var(--ink-muted);
  font-size: 0.73rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.console-preview {
  overflow: hidden;
  min-width: 0;
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(183, 215, 247, 0.95);
  border-radius: 1.15rem;
  box-shadow: var(--shadow-md);
}

.console-toolbar {
  display: flex;
  min-height: 3.6rem;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.8rem 1rem;
  background: #fbfdff;
  border-bottom: 1px solid var(--border);
}

.console-toolbar > div {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.console-toolbar strong {
  font-size: 0.89rem;
  letter-spacing: -0.01em;
}

.console-toolbar > span,
.scope-badge {
  display: inline-flex;
  align-items: center;
  padding: 0.28rem 0.55rem;
  color: var(--blue-800);
  background: var(--blue-100);
  border: 1px solid var(--blue-200);
  border-radius: 999px;
  font-size: 0.69rem;
  font-weight: 700;
  line-height: 1.25;
  white-space: nowrap;
}

.console-body {
  display: grid;
  grid-template-columns: 7.6rem minmax(0, 1fr);
  min-height: 25rem;
}

.console-nav {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 1rem 0.7rem;
  background: #f7fbff;
  border-right: 1px solid var(--border);
}

.console-nav span {
  padding: 0.52rem 0.65rem;
  color: var(--ink-muted);
  border-radius: 0.45rem;
  font-size: 0.72rem;
  font-weight: 650;
}

.console-nav .is-active {
  color: var(--blue-800);
  background: var(--blue-100);
}

.console-content {
  min-width: 0;
  padding: 1.15rem;
}

.console-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.console-heading > div > span,
.console-boundary > span {
  display: block;
  margin-bottom: 0.12rem;
  color: var(--blue-700);
  font-size: 0.63rem;
  font-weight: 800;
  letter-spacing: 0.12em;
}

.console-heading h2 {
  margin-bottom: 0;
  font-size: 1.08rem;
}

.console-stack {
  display: grid;
  gap: 0.65rem;
}

.console-stack section {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 0.8rem;
  padding: 0.8rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 0.7rem;
  box-shadow: 0 6px 18px rgba(21, 72, 130, 0.05);
}

.console-index {
  display: grid;
  width: 2.05rem;
  height: 2.05rem;
  flex: 0 0 auto;
  place-items: center;
  color: var(--blue-800);
  background: var(--blue-100);
  border-radius: 0.52rem;
  font-size: 0.67rem;
  font-weight: 800;
}

.console-stack div {
  min-width: 0;
}

.console-stack strong {
  display: block;
  margin-bottom: 0.1rem;
  font-size: 0.81rem;
}

.console-stack p {
  margin-bottom: 0;
  color: var(--ink-muted);
  font-size: 0.68rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.console-boundary {
  margin: 0.75rem 0 0;
  padding: 0.72rem 0.8rem;
  color: var(--ink-soft);
  background: var(--blue-50);
  border: 1px solid var(--border);
  border-radius: 0.68rem;
  font-size: 0.67rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.layer-index {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: clamp(2.25rem, 3.5vw, 3rem);
  background: rgba(255, 255, 255, 0.76);
  border: 1px solid var(--border);
  border-bottom: 0;
  border-radius: 1rem 1rem 0 0;
  backdrop-filter: blur(12px);
}

.layer-index a {
  display: flex;
  min-width: 0;
  min-height: 4.5rem;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 1.25rem;
  border-right: 1px solid var(--border);
}

.layer-index a:last-child {
  border-right: 0;
}

.layer-index > a > span {
  display: grid;
  width: 2.25rem;
  height: 2.25rem;
  flex: 0 0 auto;
  place-items: center;
  color: var(--blue-800);
  background: var(--blue-100);
  border-radius: 0.55rem;
  font-size: 0.66rem;
  font-weight: 800;
}

.layer-index strong {
  min-width: 0;
  font-size: 0.88rem;
  line-height: 1.45;
  text-wrap: balance;
}

.story-intro {
  padding-block: clamp(4rem, 5vw, 4.75rem);
  background: #fff;
}

.story-intro-layout {
  display: grid;
  grid-template-columns: minmax(16rem, 0.72fr) minmax(18rem, 1.28fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 5rem);
}

.story-intro h2 {
  max-width: 35rem;
  margin-bottom: 0;
  font-size: clamp(2rem, calc(1.72rem + 1.15vw), 2.75rem);
  letter-spacing: -0.042em;
  word-break: keep-all;
}

.story-intro-layout > p {
  max-width: 35rem;
  margin-bottom: 0.25rem;
  color: var(--ink-soft);
  font-size: 1rem;
}

.capability-section {
  position: relative;
  padding-block: clamp(4.5rem, 5.25vw, 5rem);
  scroll-margin-top: var(--header-height);
}

.capability-foundation {
  background: var(--surface-soft);
}

.capability-enhanced {
  background: #fff;
}

.capability-agent {
  background: linear-gradient(135deg, #f5f9ff 0%, #eaf4ff 100%);
}

.capability-layout {
  display: grid;
  grid-template-columns: minmax(14rem, 0.68fr) minmax(0, 1.52fr);
  align-items: start;
  gap: clamp(2.5rem, 5vw, 4.5rem);
}

.layer-heading {
  position: sticky;
  top: calc(var(--header-height) + 1.75rem);
  max-width: 21rem;
}

.layer-number {
  display: grid;
  width: 2.65rem;
  height: 2.65rem;
  margin-bottom: 1.25rem;
  place-items: center;
  color: #fff;
  background: var(--blue-700);
  border-radius: 0.65rem;
  font-size: 0.72rem;
  font-weight: 800;
  box-shadow: 0 10px 22px rgba(7, 94, 216, 0.2);
}

.layer-heading h2 {
  margin-bottom: 0.72rem;
  font-size: clamp(2rem, calc(1.88rem + 0.4vw), 2.25rem);
  letter-spacing: -0.038em;
  word-break: keep-all;
}

.layer-heading > p:not(.eyebrow) {
  margin-bottom: 1.15rem;
  color: var(--ink-soft);
}

.text-link {
  display: inline-flex;
  min-height: 2.75rem;
  align-items: center;
  color: var(--blue-800);
  font-size: 0.88rem;
  font-weight: 700;
}

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

.capability-card {
  min-width: 0;
  min-height: 11rem;
  padding: 1.25rem;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.capability-card-wide {
  grid-column: span 2;
  min-height: auto;
}

.capability-card > span {
  display: inline-flex;
  margin-bottom: 1rem;
  color: var(--blue-700);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.capability-card h3 {
  margin-bottom: 0.6rem;
  font-size: clamp(1.125rem, calc(1.08rem + 0.16vw), 1.22rem);
}

.capability-card p {
  margin-bottom: 0;
  color: var(--ink-soft);
  font-size: clamp(0.9375rem, calc(0.91rem + 0.1vw), 1rem);
  line-height: 1.65;
}

.capability-limit {
  display: block;
  margin-top: 0.8rem;
  color: #825000;
  font-size: 0.78rem;
  line-height: 1.55;
}

.access-section {
  padding-block: clamp(4rem, 5vw, 4.75rem);
  background: #fff;
}

.access-panel {
  display: grid;
  grid-template-columns: minmax(17rem, 0.72fr) minmax(0, 1.28fr);
  align-items: center;
  gap: clamp(2rem, 5vw, 4.5rem);
  padding: clamp(1.5rem, 3.5vw, 2.5rem);
  background: var(--blue-50);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.access-panel h2 {
  margin-bottom: 0.6rem;
  font-size: clamp(1.8rem, 3vw, 2.65rem);
  letter-spacing: -0.04em;
}

.access-panel > div > p:last-child {
  margin-bottom: 0;
  color: var(--ink-soft);
}

.access-list {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  gap: 0.75rem;
  list-style: none;
}

.access-list li {
  min-width: 0;
  padding: 1rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 0.75rem;
}

.access-list span,
.access-list strong,
.access-list small {
  display: block;
}

.access-list span {
  margin-bottom: 0.6rem;
  color: var(--blue-700);
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.08em;
}

.access-list strong {
  color: var(--ink);
  font-size: 0.9rem;
  line-height: 1.45;
}

.access-list small {
  margin-top: 0.42rem;
  color: var(--ink-muted);
  font-size: 0.78rem;
  line-height: 1.5;
}

.platform-finale {
  padding: 0 0 clamp(4rem, 5vw, 4.75rem);
  background: #fff;
}

.finale-card {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) auto;
  align-items: end;
  gap: 2rem;
  padding: clamp(2rem, 4vw, 3rem);
  color: #fff;
  background: linear-gradient(135deg, #0868df 0%, #073d91 100%);
  border: 1px solid #0b5bc5;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.finale-card .eyebrow {
  color: #cde6ff;
}

.finale-card h2 {
  max-width: 46rem;
  margin-bottom: 0.7rem;
  color: #fff;
  font-size: clamp(2rem, calc(1.65rem + 1.35vw), 3rem);
  letter-spacing: -0.045em;
}

.finale-card p:last-child {
  max-width: 40rem;
  margin-bottom: 0;
  color: #deedff;
}

.finale-actions {
  justify-content: flex-end;
}

.button-light {
  color: var(--blue-900);
  background: #fff;
  border-color: #fff;
}

.button-light:hover {
  background: var(--blue-100);
}

.button-ghost-light {
  color: #fff;
  background: transparent;
  border-color: rgba(255, 255, 255, 0.72);
}

.button-ghost-light:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: #fff;
}

.site-footer {
  padding-block: 2.25rem;
  background: #f7faff;
  border-top: 1px solid var(--border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 1rem 3rem;
}

.footer-grid > div > p {
  margin: 0.25rem 0 0;
  color: var(--ink-muted);
  font-size: 0.8rem;
}

.footer-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.copyright {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--ink-muted);
  font-size: 0.76rem;
}

@media (max-width: 68rem) {
  .hero-layout {
    grid-template-columns: minmax(0, 1fr) minmax(25rem, 0.9fr);
    gap: 2.5rem;
  }

  .access-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 56rem) {
  .hero {
    padding-top: 3.5rem;
  }

  .hero-layout,
  .story-intro-layout,
  .capability-layout,
  .finale-card {
    grid-template-columns: 1fr;
  }

  .hero-copy,
  .story-intro-layout > *,
  .layer-heading {
    max-width: 42rem;
  }

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

  .console-preview {
    width: min(100%, 42rem);
  }

  .layer-heading {
    position: static;
  }

  .finale-actions {
    justify-content: flex-start;
  }
}

@media (max-width: 48rem) {
  :root {
    --header-height: 4rem;
  }

  .site-shell {
    width: min(calc(100% - 2rem), var(--shell));
  }

  .header-inner {
    gap: 0.85rem;
  }

  .brand {
    font-size: 1.05rem;
  }

  .primary-nav {
    gap: 0.75rem;
  }

  .header-console {
    min-height: 2.5rem;
    padding-inline: 0.78rem;
  }

  .header-console-full {
    display: none;
  }

  .header-console-short {
    display: inline;
  }

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

  .layer-index a {
    min-height: 4.5rem;
    padding-inline: 0.85rem;
  }

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

  .capability-card {
    min-height: auto;
  }

  .capability-card-wide {
    grid-column: auto;
  }

  .access-list {
    grid-template-columns: 1fr;
  }

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

  .footer-nav {
    flex-wrap: wrap;
  }

  .copyright {
    grid-column: auto;
  }
}

@media (max-width: 30rem) {
  .site-shell {
    width: min(calc(100% - 1.5rem), var(--shell));
  }

  .header-inner {
    gap: 0.55rem;
  }

  .brand span {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
  }

  .primary-nav {
    gap: 0.6rem;
  }

  .hero {
    padding-top: 3rem;
  }

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

  .hero-actions .button {
    width: 100%;
    padding-inline: 0.8rem;
  }

  .hero-proof {
    grid-template-columns: 1fr;
  }

  .layer-index a {
    min-height: 7rem;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 0.55rem;
    padding: 0.8rem 0.7rem;
  }

  .layer-index strong {
    font-size: 0.78rem;
  }

  .console-body {
    grid-template-columns: 1fr;
    min-height: auto;
  }

  .console-nav {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .console-nav span {
    text-align: center;
  }

  .scope-badge {
    display: none;
  }

  .finale-actions {
    display: grid;
    grid-template-columns: 1fr;
    width: 100%;
  }

  .finale-actions .button {
    width: 100%;
  }
}

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

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