:root {
  color-scheme: light dark;
  --page: #f5f7ff;
  --page-deep: #edf1ff;
  --surface: rgba(255, 255, 255, 0.82);
  --surface-solid: #ffffff;
  --ink: #12182f;
  --muted: #58617a;
  --accent: #4f56dc;
  --accent-strong: #3941ca;
  --accent-soft: #e9ebff;
  --cyan: #25a9ca;
  --success: #23875b;
  --line: rgba(70, 79, 128, 0.18);
  --shadow: 0 26px 72px rgba(49, 57, 119, 0.14);
  --small-shadow: 0 14px 38px rgba(49, 57, 119, 0.08);
  --radius: 26px;
  --content: 1120px;
}

* {
  box-sizing: border-box;
}

html {
  overflow-x: clip;
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  overflow-x: clip;
  color: var(--ink);
  background:
    radial-gradient(circle at 9% 2%, rgba(115, 124, 255, 0.22), transparent 29rem),
    radial-gradient(circle at 93% 20%, rgba(65, 197, 227, 0.15), transparent 26rem),
    linear-gradient(180deg, var(--page), var(--page-deep));
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  font-size: 17px;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent-strong);
  text-decoration-thickness: 0.08em;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--accent);
}

a:focus-visible,
summary:focus-visible {
  border-radius: 8px;
  outline: 3px solid color-mix(in srgb, var(--accent) 72%, white);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  inset-block-start: 12px;
  inset-inline-start: 12px;
  z-index: 100;
  min-height: 44px;
  padding: 9px 16px;
  border-radius: 999px;
  color: white;
  background: var(--accent-strong);
  font-weight: 750;
  transform: translateY(-180%);
}

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

.site-shell {
  width: min(var(--content), calc(100% - 40px));
  margin-inline: auto;
}

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  min-height: 94px;
  padding-block: 20px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  color: var(--ink);
  font-size: 1.04rem;
  font-weight: 780;
  letter-spacing: -0.025em;
  text-decoration: none;
}

.brand-mark {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 36px;
  border: 1px solid rgba(255, 255, 255, 0.68);
  border-radius: 11px;
  background: linear-gradient(145deg, var(--accent), var(--cyan));
  box-shadow: 0 8px 20px rgba(66, 76, 200, 0.22);
}

.brand-mark::before,
.brand-mark::after,
.brand-mark span::before,
.brand-mark span::after {
  content: "";
  position: absolute;
  display: block;
  border-radius: 999px;
  background: white;
}

.brand-mark::before {
  inset-block-start: 8px;
  inset-inline-start: 8px;
  width: 8px;
  height: 8px;
}

.brand-mark::after {
  inset-block-end: 8px;
  inset-inline-end: 8px;
  width: 8px;
  height: 8px;
}

.brand-mark span:first-child::before {
  inset-block-start: 14px;
  inset-inline-start: 12px;
  width: 17px;
  height: 3px;
  transform: rotate(35deg);
  transform-origin: left center;
}

.brand-mark span:first-child::after {
  inset-block-start: 15px;
  inset-inline-start: 15px;
  width: 3px;
  height: 14px;
}

.site-nav,
.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 22px;
}

.site-nav a,
.site-footer nav a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 620;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"],
.site-footer nav a:hover {
  color: var(--accent-strong);
}

.site-nav a[aria-current="page"] {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 7px;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(360px, 0.92fr);
  gap: clamp(48px, 7vw, 92px);
  align-items: center;
  min-height: 690px;
  padding-block: 72px 110px;
}

.eyebrow {
  margin: 0 0 15px;
  color: var(--accent-strong);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  line-height: 1.4;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
  letter-spacing: -0.04em;
  line-height: 1.08;
}

h1 {
  margin: 0;
  font-size: clamp(3.2rem, 7.6vw, 6.8rem);
}

h2 {
  margin: 0;
  font-size: clamp(2.2rem, 4.5vw, 4rem);
}

h3 {
  margin: 0 0 12px;
  font-size: 1.28rem;
}

.lead {
  max-width: 660px;
  margin: 26px 0 0;
  color: var(--muted);
  font-size: clamp(1.06rem, 1.7vw, 1.25rem);
}

.actions,
.contact-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 34px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 50px;
  padding: 10px 21px;
  border: 1px solid var(--accent-strong);
  border-radius: 999px;
  color: white;
  background: var(--accent-strong);
  box-shadow: 0 10px 25px rgba(57, 65, 202, 0.2);
  font-weight: 750;
  text-decoration: none;
}

.button:hover {
  color: white;
  background: var(--accent);
}

.button.secondary {
  color: var(--accent-strong);
  background: transparent;
  box-shadow: none;
}

.button.secondary:hover {
  color: white;
  background: var(--accent-strong);
}

.trust-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px 18px;
  margin: 27px 0 0;
  padding: 0;
  color: var(--muted);
  font-size: 0.91rem;
  list-style: none;
}

.trust-list li::before {
  content: "✓";
  margin-inline-end: 7px;
  color: var(--success);
  font-weight: 800;
}

.router-demo {
  position: relative;
}

.router-demo::before {
  content: "";
  position: absolute;
  inset: 10% -7% -7% 16%;
  z-index: -1;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(84, 92, 226, 0.35), rgba(53, 188, 217, 0.25));
  filter: blur(45px);
}

.demo-window {
  position: relative;
  min-height: 500px;
  padding: 26px;
  border: 1px solid rgba(255, 255, 255, 0.74);
  border-radius: 38px;
  background: linear-gradient(150deg, rgba(255, 255, 255, 0.88), rgba(235, 239, 255, 0.72));
  box-shadow: var(--shadow);
  -webkit-backdrop-filter: blur(22px) saturate(120%);
  backdrop-filter: blur(22px) saturate(120%);
}

.demo-toolbar {
  display: flex;
  gap: 7px;
  margin-bottom: 54px;
}

.demo-toolbar span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: rgba(70, 79, 128, 0.23);
}

.demo-node {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 300px;
  min-height: 74px;
  padding: 13px 17px;
  border: 1px solid var(--line);
  border-radius: 20px;
  background: var(--surface-solid);
  box-shadow: var(--small-shadow);
}

.demo-node strong,
.demo-node small {
  display: block;
}

.demo-node strong {
  letter-spacing: -0.015em;
}

.demo-node small {
  margin-top: 2px;
  color: var(--muted);
  font-size: 0.75rem;
}

.demo-icon {
  display: inline-flex;
  flex: 0 0 auto;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  color: white;
  background: linear-gradient(145deg, #4e8be8, #4566db);
  font-weight: 800;
}

.destination-node {
  margin-block-start: 124px;
  margin-inline-start: auto;
}

.destination-icon {
  background: linear-gradient(145deg, var(--accent), var(--cyan));
}

.route-path {
  position: absolute;
  inset-block-start: 175px;
  inset-inline-start: 32%;
  z-index: 1;
  width: 43%;
  height: 180px;
  border-inline-end: 4px solid var(--accent);
  border-block-end: 4px solid var(--accent);
  border-radius: 0 0 44px 0;
  transform: rotate(-12deg);
}

.route-path::after {
  content: "";
  position: absolute;
  inset-block-end: -9px;
  inset-inline-end: -8px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 7px color-mix(in srgb, var(--accent) 17%, transparent);
}

.route-status {
  position: absolute;
  inset-block-start: 242px;
  inset-inline-start: 28%;
  z-index: 3;
  padding: 7px 11px;
  border: 1px solid color-mix(in srgb, var(--success) 32%, transparent);
  border-radius: 999px;
  color: var(--success);
  background: color-mix(in srgb, var(--surface-solid) 86%, transparent);
  font-size: 0.72rem;
  font-weight: 780;
}

.fail-open {
  position: absolute;
  inset-inline: 26px;
  inset-block-end: 25px;
  padding: 12px 15px;
  border: 1px solid var(--line);
  border-radius: 15px;
  color: var(--muted);
  background: color-mix(in srgb, var(--surface-solid) 70%, transparent);
  font-size: 0.79rem;
  font-weight: 650;
  text-align: center;
}

.fail-open span {
  margin-inline-end: 6px;
  color: var(--success);
}

.section {
  padding-block: 98px;
  border-block-start: 1px solid var(--line);
}

.section-heading {
  max-width: 780px;
  margin-bottom: 44px;
}

.section-heading > p:last-child {
  max-width: 700px;
  margin: 22px 0 0;
  color: var(--muted);
  font-size: 1.08rem;
}

.compact-heading {
  margin-bottom: 38px;
}

.card,
.document,
.contact-band,
.not-found-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--small-shadow);
  -webkit-backdrop-filter: blur(18px) saturate(115%);
  backdrop-filter: blur(18px) saturate(115%);
}

.step-grid,
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.card {
  padding: 29px;
}

.card p {
  margin: 0;
  color: var(--muted);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  margin-bottom: 44px;
  border-radius: 50%;
  color: var(--accent-strong);
  background: var(--accent-soft);
  font-size: 0.9rem;
  font-weight: 800;
}

.split-section {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: clamp(40px, 8vw, 110px);
}

.prose-stack p {
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 1.08rem;
}

.text-link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 750;
}

.text-link span {
  margin-inline-start: 7px;
}

.contact-band {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 34px;
  margin-block: 98px;
  padding: clamp(30px, 5vw, 54px);
}

.contact-band h2 {
  font-size: clamp(2rem, 4vw, 3.2rem);
}

.contact-actions {
  justify-content: flex-end;
  margin-top: 0;
}

.site-footer {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) auto;
  gap: 22px 40px;
  align-items: start;
  padding-block: 42px 56px;
  border-block-start: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.88rem;
}

.site-footer strong {
  color: var(--ink);
  font-size: 1rem;
}

.site-footer p {
  margin: 4px 0 0;
}

.site-footer > p {
  grid-column: 1 / -1;
}

.document {
  max-width: 870px;
  margin: 56px auto 105px;
  padding: clamp(29px, 6vw, 70px);
  overflow-wrap: anywhere;
}

.document-header {
  padding-bottom: 10px;
}

.document h1 {
  max-width: 760px;
  font-size: clamp(2.8rem, 6vw, 5rem);
}

.document h2 {
  margin-block: 48px 16px;
  font-size: clamp(1.55rem, 3vw, 2rem);
  scroll-margin-top: 24px;
}

.document p,
.document li {
  color: var(--muted);
}

.document p {
  margin-block: 0 17px;
}

.document ul,
.document ol {
  padding-inline-start: 1.45em;
}

.document li + li {
  margin-top: 7px;
}

.document b,
.document strong {
  color: var(--ink);
}

.meta {
  margin-top: 18px !important;
  font-size: 0.94rem;
}

.notice {
  margin-block: 32px;
  padding: 20px 22px;
  border-inline-start: 4px solid var(--accent);
  border-radius: 0 17px 17px 0;
  color: var(--muted);
  background: var(--accent-soft);
}

.notice strong {
  color: var(--ink);
}

.contact-link {
  display: inline-flex;
  align-items: center;
  min-height: 48px;
  padding: 8px 16px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface-solid);
  font-weight: 760;
  text-decoration: none;
}

.setup-list {
  margin-block: 26px 0;
  padding: 0 !important;
  list-style: none;
  counter-reset: setup;
}

.setup-list li {
  position: relative;
  min-height: 72px;
  padding: 2px 0 28px 62px;
  counter-increment: setup;
}

.setup-list li::before {
  content: counter(setup);
  position: absolute;
  inset-block-start: 0;
  inset-inline-start: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: var(--accent-strong);
  background: var(--accent-soft);
  font-weight: 800;
}

.setup-list li:not(:last-child)::after {
  content: "";
  position: absolute;
  inset-block-start: 45px;
  inset-block-end: 3px;
  inset-inline-start: 20px;
  width: 2px;
  background: var(--line);
}

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

.setup-list span {
  margin-top: 3px;
}

.faq-list {
  margin-top: 24px;
  border-block-start: 1px solid var(--line);
}

.faq-list details {
  border-block-end: 1px solid var(--line);
}

.faq-list summary {
  position: relative;
  min-height: 62px;
  padding: 18px 42px 18px 0;
  color: var(--ink);
  font-weight: 740;
  cursor: pointer;
  list-style: none;
}

.faq-list summary::-webkit-details-marker {
  display: none;
}

.faq-list summary::after {
  content: "+";
  position: absolute;
  inset-block-start: 17px;
  inset-inline-end: 6px;
  color: var(--accent-strong);
  font-size: 1.45rem;
  font-weight: 460;
  line-height: 1;
}

.faq-list details[open] summary::after {
  content: "−";
}

.faq-list details > div {
  padding: 0 28px 20px 0;
}

.mini-links {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 52px;
}

.mini-links a {
  display: block;
  min-height: 106px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 18px;
  color: var(--ink);
  background: color-mix(in srgb, var(--surface-solid) 72%, transparent);
  text-decoration: none;
}

.mini-links strong,
.mini-links span {
  display: block;
}

.mini-links span {
  margin-top: 6px;
  color: var(--muted);
  font-size: 0.9rem;
}

.not-found {
  display: flex;
  min-height: 100vh;
  padding-block: 42px;
  flex-direction: column;
}

.not-found-card {
  width: min(720px, 100%);
  margin: auto;
  padding: clamp(30px, 7vw, 70px);
}

.not-found-card h1 {
  font-size: clamp(2.8rem, 7vw, 5.7rem);
}

.not-found-card p:not(.eyebrow) {
  margin-block: 22px 28px;
  color: var(--muted);
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #0c1020;
    --page-deep: #10152a;
    --surface: rgba(24, 30, 56, 0.82);
    --surface-solid: #1a2039;
    --ink: #f3f5ff;
    --muted: #b3bad0;
    --accent: #9ca1ff;
    --accent-strong: #b6baff;
    --accent-soft: #292f5c;
    --cyan: #66d5ed;
    --success: #73d5a4;
    --line: rgba(183, 191, 230, 0.17);
    --shadow: 0 26px 72px rgba(0, 0, 0, 0.34);
    --small-shadow: 0 14px 38px rgba(0, 0, 0, 0.22);
  }

  .demo-window {
    border-color: rgba(183, 191, 230, 0.18);
    background: linear-gradient(150deg, rgba(34, 42, 78, 0.9), rgba(19, 25, 50, 0.82));
  }

  .button {
    color: #10152a;
    background: var(--accent-strong);
  }

  .button:hover {
    color: #10152a;
    background: var(--accent);
  }

  .button.secondary {
    color: var(--accent-strong);
    background: transparent;
  }

  .button.secondary:hover {
    color: #10152a;
    background: var(--accent-strong);
  }
}

@media (max-width: 860px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
    padding-block: 22px;
  }

  .site-nav {
    width: 100%;
    gap: 4px 18px;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-block: 65px 88px;
  }

  .router-demo {
    width: min(520px, 100%);
    margin-inline: auto;
  }

  .step-grid,
  .feature-grid {
    grid-template-columns: 1fr;
  }

  .step-number {
    margin-bottom: 26px;
  }

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

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

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

@media (max-width: 560px) {
  body {
    font-size: 16px;
  }

  .site-shell {
    width: min(calc(100% - 28px), var(--content));
  }

  .site-nav {
    justify-content: space-between;
    gap: 0 10px;
  }

  .site-nav a {
    font-size: 0.85rem;
  }

  .hero {
    padding-block-start: 48px;
  }

  h1 {
    font-size: clamp(3rem, 16vw, 4.7rem);
  }

  .demo-window {
    min-height: 450px;
    padding: 20px;
    border-radius: 29px;
  }

  .demo-node {
    max-width: 270px;
  }

  .route-status {
    inset-inline-start: 16%;
  }

  .section {
    padding-block: 74px;
  }

  .card {
    padding: 24px;
  }

  .contact-band {
    margin-block: 72px;
  }

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

  .site-footer > p {
    grid-column: auto;
  }

  .document {
    margin-block: 32px 76px;
    border-radius: 22px;
  }

  .document h1 {
    font-size: clamp(2.65rem, 13vw, 4rem);
  }

  .setup-list li {
    padding-inline-start: 55px;
  }

  .mini-links {
    grid-template-columns: 1fr;
  }
}

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

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

@media print {
  :root {
    color-scheme: light;
    --page: white;
    --page-deep: white;
    --surface: white;
    --surface-solid: white;
    --ink: black;
    --muted: #303030;
    --line: #b5b5b5;
  }

  body {
    background: white;
  }

  .site-nav,
  .site-footer,
  .skip-link {
    display: none;
  }

  .document {
    max-width: none;
    margin: 0;
    padding: 0;
    border: 0;
    box-shadow: none;
  }

  a {
    color: black;
  }
}