:root {
  --tw-primary: #479dbf;
  --tw-primary-deep: #386788;
  --tw-primary-soft: #eaf6fa;
  --tw-ink: #111928;
  --tw-navy: #090e34;
  --tw-body: #637381;
  --tw-muted: #8899a8;
  --tw-line: #dfe4ea;
  --tw-surface: #ffffff;
  --tw-surface-alt: #f7fafc;
  --tw-success: #13a77d;
  --tw-warning: #b7791f;
  --tw-warning-soft: #fff9e8;
  --tw-danger: #c2415d;
  --tw-shadow-sm: 0 8px 24px rgba(9, 14, 52, 0.08);
  --tw-shadow-lg: 0 28px 70px rgba(9, 14, 52, 0.16);
  --tw-radius: 18px;
  --tw-header-height: 82px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 104px;
}

body.quick-start-page {
  margin: 0;
  color: var(--tw-ink);
  background: var(--tw-surface);
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

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

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 9999;
  padding: 10px 16px;
  color: #fff;
  background: var(--tw-navy);
  border-radius: 8px;
  transform: translateY(-150%);
  transition: transform 0.2s ease;
}

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

.reading-progress {
  position: fixed;
  inset: 0 0 auto;
  z-index: 10000;
  height: 3px;
  background: linear-gradient(90deg, #8bd6e9, #13c296);
  transform: scaleX(0);
  transform-origin: left;
}

.site-header {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 1000;
  width: 100%;
  color: #fff;
  transition: background 0.25s ease, box-shadow 0.25s ease, color 0.25s ease;
}

.site-header.is-scrolled {
  position: fixed;
  color: var(--tw-ink);
  background: rgba(255, 255, 255, 0.94);
  box-shadow: inset 0 -1px 0 rgba(17, 25, 40, 0.08);
  backdrop-filter: blur(12px);
}

.header-inner {
  width: min(1160px, calc(100% - 32px));
  min-height: var(--tw-header-height);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand-link {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
}

.brand-link img {
  width: 188px;
  height: 59px;
  object-fit: contain;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: auto;
}

.header-nav a {
  position: relative;
  color: inherit;
  font-size: 0.96rem;
  font-weight: 600;
  text-decoration: none;
  transition: opacity 0.2s ease, color 0.2s ease;
}

.header-nav a:not(.header-cta)::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -8px;
  left: 0;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transform: scaleX(0);
  transition: transform 0.2s ease;
}

.header-nav a:hover::after,
.header-nav a[aria-current="page"]::after {
  transform: scaleX(1);
}

.header-nav a:hover {
  opacity: 0.74;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 9px 20px;
  color: var(--tw-ink) !important;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 8px 20px rgba(9, 14, 52, 0.12);
}

.site-header.is-scrolled .header-cta {
  color: #fff !important;
  background: var(--tw-primary);
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 42px;
  padding: 9px;
  border: 0;
  border-radius: 8px;
  color: inherit;
  background: transparent;
}

.menu-toggle span {
  display: block;
  width: 28px;
  height: 2px;
  margin: 5px 0;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 156px 0 76px;
  color: #fff;
  background:
    radial-gradient(circle at 86% 18%, rgba(255, 255, 255, 0.16), transparent 24%),
    radial-gradient(circle at 12% 90%, rgba(19, 194, 150, 0.23), transparent 26%),
    linear-gradient(145deg, #479dbf 0%, #3d86aa 54%, #386788 100%);
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 50%;
}

.hero::before {
  top: -300px;
  right: -190px;
  width: 660px;
  height: 660px;
}

.hero::after {
  bottom: -310px;
  left: -210px;
  width: 520px;
  height: 520px;
}

.shell {
  position: relative;
  z-index: 1;
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(480px, 1.1fr);
  align-items: center;
  gap: 62px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 18px;
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 28px;
  height: 2px;
  background: #fff;
  opacity: 0.7;
}

.hero h1 {
  max-width: 680px;
  margin: 0 0 22px;
  font-size: clamp(2.5rem, 5.2vw, 4.5rem);
  line-height: 1.04;
  letter-spacing: -0.045em;
}

.hero-copy {
  max-width: 625px;
  margin: 0;
  color: rgba(255, 255, 255, 0.86);
  font-size: clamp(1.02rem, 1.8vw, 1.22rem);
  line-height: 1.65;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 22px;
  border: 1px solid transparent;
  border-radius: 9px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

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

.button-primary {
  color: var(--tw-ink);
  background: #fff;
  box-shadow: 0 10px 24px rgba(9, 14, 52, 0.16);
}

.button-secondary {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.34);
}

.button-dark {
  color: #fff;
  background: var(--tw-navy);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 24px;
}

.hero-meta span {
  padding: 6px 11px;
  color: rgba(255, 255, 255, 0.9);
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
}

.hero-visual {
  position: relative;
}

.product-window {
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: 16px;
  box-shadow: 0 36px 90px rgba(9, 14, 52, 0.3);
  transform: rotate(0.5deg);
}

.window-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  height: 34px;
  padding: 0 13px;
  background: #f6f8fa;
  border-bottom: 1px solid #e7ebef;
}

.window-bar span {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: #d3dae0;
}

.window-bar span:first-child {
  background: #f5a7aa;
}

.window-bar span:nth-child(2) {
  background: #f1cc7b;
}

.window-bar span:nth-child(3) {
  background: #82d0b3;
}

.product-window img {
  width: 100%;
  aspect-ratio: 1526 / 718;
  object-fit: cover;
  object-position: center top;
}

.visual-badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 15px;
  color: var(--tw-ink);
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid rgba(255, 255, 255, 0.9);
  border-radius: 12px;
  box-shadow: var(--tw-shadow-sm);
  font-size: 0.84rem;
  font-weight: 700;
}

.visual-badge strong {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  color: #fff;
  background: var(--tw-success);
  border-radius: 50%;
}

.visual-badge.top {
  top: -18px;
  right: 26px;
}

.visual-badge.bottom {
  bottom: -24px;
  left: 30px;
}

.quick-path {
  padding: 28px 0;
  background: var(--tw-navy);
}

.quick-path-inner {
  display: grid;
  grid-template-columns: 180px 1fr;
  align-items: center;
  gap: 26px;
}

.quick-path h2 {
  margin: 0;
  color: #fff;
  font-size: 1.08rem;
  letter-spacing: -0.01em;
}

.path-list {
  display: grid;
  grid-template-columns: repeat(8, minmax(82px, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.path-list li {
  position: relative;
  min-width: 0;
  padding: 0 7px;
  color: rgba(255, 255, 255, 0.76);
  text-align: center;
  font-size: 0.72rem;
  font-weight: 700;
  line-height: 1.3;
}

.path-list li:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 15px;
  right: -9px;
  width: 18px;
  height: 1px;
  background: rgba(255, 255, 255, 0.28);
}

.path-number {
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  margin: 0 auto 7px;
  color: #fff;
  background: rgba(71, 157, 191, 0.38);
  border: 1px solid rgba(255, 255, 255, 0.26);
  border-radius: 50%;
}

.prerequisites {
  padding: 88px 0 82px;
  background: var(--tw-surface-alt);
}

.section-heading {
  max-width: 710px;
  margin-bottom: 34px;
}

.section-kicker {
  display: block;
  margin-bottom: 10px;
  color: var(--tw-primary-deep);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.section-heading h2,
.reference-heading h2 {
  margin: 0 0 12px;
  font-size: clamp(2rem, 3.6vw, 3rem);
  line-height: 1.16;
  letter-spacing: -0.035em;
}

.section-heading p,
.reference-heading p {
  margin: 0;
  color: var(--tw-body);
  font-size: 1.04rem;
}

.requirement-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.requirement-card {
  padding: 26px;
  background: #fff;
  border: 1px solid var(--tw-line);
  border-radius: 14px;
  box-shadow: 0 8px 24px rgba(9, 14, 52, 0.04);
}

.requirement-card .icon-tile {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 18px;
  color: #fff;
  background: var(--tw-primary);
  border-radius: 10px;
  font-size: 1.05rem;
  font-weight: 800;
}

.requirement-card h3 {
  margin: 0 0 8px;
  font-size: 1.08rem;
}

.requirement-card p {
  margin: 0;
  color: var(--tw-body);
  font-size: 0.93rem;
}

.prereq-notes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 22px;
}

.guide-body {
  padding: 86px 0 100px;
}

.guide-layout {
  display: grid;
  grid-template-columns: 235px minmax(0, 1fr);
  align-items: start;
  gap: 58px;
}

.guide-toc {
  position: sticky;
  top: 108px;
  padding: 20px;
  background: var(--tw-surface-alt);
  border: 1px solid var(--tw-line);
  border-radius: 14px;
}

.guide-toc p {
  margin: 0 0 10px;
  color: var(--tw-muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.guide-toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

.guide-toc li + li {
  margin-top: 3px;
}

.guide-toc a {
  display: grid;
  grid-template-columns: 24px 1fr;
  align-items: center;
  gap: 8px;
  padding: 7px 8px;
  color: var(--tw-body);
  border-radius: 7px;
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.35;
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease;
}

.guide-toc a span {
  display: grid;
  place-items: center;
  width: 22px;
  height: 22px;
  color: var(--tw-primary-deep);
  background: #fff;
  border: 1px solid var(--tw-line);
  border-radius: 50%;
  font-size: 0.68rem;
}

.guide-toc a:hover,
.guide-toc a.is-active {
  color: var(--tw-primary-deep);
  background: #fff;
}

.guide-toc a.is-active span {
  color: #fff;
  background: var(--tw-primary);
  border-color: var(--tw-primary);
}

.guide-content {
  min-width: 0;
}

.step-section {
  padding: 0 0 72px;
  margin-bottom: 72px;
  border-bottom: 1px solid var(--tw-line);
}

.step-section:last-of-type {
  margin-bottom: 0;
}

.step-heading {
  display: grid;
  grid-template-columns: 58px 1fr;
  align-items: start;
  gap: 18px;
  margin-bottom: 26px;
}

.step-number {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  color: #fff;
  background: linear-gradient(145deg, var(--tw-primary), var(--tw-primary-deep));
  border-radius: 16px;
  box-shadow: 0 12px 28px rgba(71, 157, 191, 0.28);
  font-size: 1.35rem;
  font-weight: 800;
}

.step-heading h2 {
  margin: 2px 0 4px;
  font-size: clamp(1.72rem, 3vw, 2.35rem);
  line-height: 1.18;
  letter-spacing: -0.03em;
}

.step-heading p {
  margin: 0;
  color: var(--tw-body);
}

.guide-content h3 {
  margin: 32px 0 12px;
  font-size: 1.28rem;
  letter-spacing: -0.015em;
}

.guide-content h4 {
  margin: 24px 0 8px;
  font-size: 1.03rem;
}

.guide-content p {
  color: var(--tw-body);
}

.guide-content ol,
.guide-content ul {
  padding-left: 1.35rem;
}

.guide-content li {
  margin-bottom: 8px;
  color: var(--tw-body);
}

.guide-content li strong,
.guide-content p strong {
  color: var(--tw-ink);
}

.numbered-list {
  margin: 0;
  padding: 0 !important;
  counter-reset: guide-list;
  list-style: none;
}

.numbered-list > li {
  position: relative;
  min-height: 34px;
  margin-bottom: 14px;
  padding-left: 46px;
  counter-increment: guide-list;
}

.numbered-list > li::before {
  content: counter(guide-list);
  position: absolute;
  top: -1px;
  left: 0;
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  color: var(--tw-primary-deep);
  background: var(--tw-primary-soft);
  border-radius: 50%;
  font-size: 0.78rem;
  font-weight: 800;
}

.callout {
  position: relative;
  margin: 24px 0;
  padding: 20px 22px 20px 56px;
  color: var(--tw-body);
  background: var(--tw-primary-soft);
  border: 1px solid rgba(71, 157, 191, 0.25);
  border-radius: 12px;
}

.callout::before {
  content: "i";
  position: absolute;
  top: 20px;
  left: 20px;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  color: #fff;
  background: var(--tw-primary);
  border-radius: 50%;
  font-family: Georgia, serif;
  font-size: 0.92rem;
  font-weight: 700;
}

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

.callout-warning {
  background: var(--tw-warning-soft);
  border-color: rgba(183, 121, 31, 0.24);
}

.callout-warning::before {
  content: "!";
  background: var(--tw-warning);
  font-family: inherit;
}

.callout-security {
  background: #edf9f5;
  border-color: rgba(19, 167, 125, 0.25);
}

.callout-security::before {
  content: "✓";
  background: var(--tw-success);
  font-family: inherit;
}

.inline-code,
code {
  padding: 0.16em 0.42em;
  color: #24506a;
  background: #edf5f8;
  border: 1px solid #d4e7ef;
  border-radius: 5px;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  font-size: 0.88em;
  overflow-wrap: anywhere;
}

.copy-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin: 16px 0;
  padding: 13px 14px;
  background: var(--tw-surface-alt);
  border: 1px solid var(--tw-line);
  border-radius: 10px;
}

.copy-row code {
  padding: 0;
  background: transparent;
  border: 0;
  font-size: 0.83rem;
}

.copy-button {
  flex: 0 0 auto;
  padding: 7px 11px;
  color: var(--tw-primary-deep);
  background: #fff;
  border: 1px solid var(--tw-line);
  border-radius: 7px;
  font-size: 0.78rem;
  font-weight: 700;
}

.screenshot-card {
  position: relative;
  overflow: hidden;
  margin: 26px 0;
  background: #fff;
  border: 1px solid var(--tw-line);
  border-radius: 14px;
  box-shadow: var(--tw-shadow-sm);
}

.screenshot-card img {
  width: 100%;
}

.screenshot-card.ribbon img {
  width: auto;
  max-width: calc(100% - 36px);
  margin: 30px auto;
  image-rendering: auto;
}

.screenshot-card figcaption {
  padding: 14px 18px;
  color: var(--tw-body);
  background: var(--tw-surface-alt);
  border-top: 1px solid var(--tw-line);
  font-size: 0.83rem;
}

.license-grid,
.option-grid,
.query-type-grid,
.refresh-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 22px 0;
}

.license-card,
.option-card,
.query-type-card,
.refresh-card {
  padding: 20px;
  background: var(--tw-surface-alt);
  border: 1px solid var(--tw-line);
  border-radius: 12px;
}

.license-card h3,
.option-card h3,
.query-type-card h3,
.refresh-card h3 {
  margin: 0 0 7px;
  font-size: 1rem;
}

.license-card p,
.option-card p,
.query-type-card p,
.refresh-card p {
  margin: 0;
  font-size: 0.88rem;
}

.license-card.featured {
  background: var(--tw-primary-soft);
  border-color: rgba(71, 157, 191, 0.3);
}

.mini-label {
  display: inline-block;
  margin-bottom: 10px;
  padding: 4px 8px;
  color: var(--tw-primary-deep);
  background: #fff;
  border: 1px solid rgba(71, 157, 191, 0.28);
  border-radius: 999px;
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.split-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.68fr);
  align-items: start;
  gap: 34px;
}

.query-builder-figure {
  position: sticky;
  top: 106px;
  margin: 0;
  padding: 14px;
  background: var(--tw-surface-alt);
  border: 1px solid var(--tw-line);
  border-radius: 14px;
  box-shadow: var(--tw-shadow-sm);
}

.query-builder-figure img {
  width: min(100%, 334px);
  margin: 0 auto;
  border: 1px solid #d8dde1;
}

.query-builder-figure figcaption {
  padding: 12px 4px 2px;
  color: var(--tw-body);
  font-size: 0.82rem;
}

.pat-flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 9px;
  margin: 20px 0;
}

.pat-flow-step {
  position: relative;
  min-height: 112px;
  padding: 16px 13px;
  background: var(--tw-surface-alt);
  border: 1px solid var(--tw-line);
  border-radius: 10px;
}

.pat-flow-step:not(:last-child)::after {
  content: "›";
  position: absolute;
  top: 40px;
  right: -9px;
  z-index: 2;
  color: var(--tw-primary);
  font-size: 1.25rem;
  font-weight: 800;
}

.pat-flow-step b {
  display: block;
  margin-bottom: 7px;
  color: var(--tw-primary-deep);
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.pat-flow-step span {
  display: block;
  color: var(--tw-body);
  font-size: 0.79rem;
  line-height: 1.45;
}

.permission-flow,
.refresh-flow,
.quota-visual {
  display: grid;
  align-items: stretch;
  gap: 10px;
  margin: 24px 0;
}

.permission-flow {
  grid-template-columns: 1fr auto 1fr auto 1.1fr;
}

.flow-node {
  display: flex;
  min-height: 92px;
  padding: 16px;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  background: var(--tw-surface-alt);
  border: 1px solid var(--tw-line);
  border-radius: 11px;
}

.flow-node strong {
  color: var(--tw-ink);
  font-size: 0.92rem;
}

.flow-node span {
  color: var(--tw-body);
  font-size: 0.78rem;
  line-height: 1.42;
}

.flow-node.success {
  background: #edf9f5;
  border-color: rgba(19, 167, 125, 0.28);
}

.flow-arrow {
  display: grid;
  place-items: center;
  color: var(--tw-primary);
  font-size: 1.35rem;
  font-weight: 800;
}

.success-figure {
  position: relative;
  overflow: hidden;
  margin: 26px 0;
  border: 1px solid var(--tw-line);
  border-radius: 14px;
  box-shadow: var(--tw-shadow-lg);
}

.success-figure img {
  width: 100%;
}

.success-caption {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  padding: 1px;
  background: var(--tw-line);
}

.success-caption span {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 66px;
  padding: 13px;
  color: var(--tw-body);
  background: #fff;
  font-size: 0.78rem;
  line-height: 1.35;
}

.success-caption b {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  color: #fff;
  background: var(--tw-success);
  border-radius: 50%;
  font-size: 0.7rem;
}

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

.refresh-card {
  position: relative;
  padding-top: 58px;
}

.refresh-card .refresh-icon {
  position: absolute;
  top: 17px;
  left: 20px;
  color: var(--tw-primary);
  font-size: 1.45rem;
  font-weight: 800;
}

.refresh-flow {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.reference-area {
  padding: 92px 0 98px;
  background: var(--tw-surface-alt);
}

.reference-heading {
  max-width: 760px;
  margin-bottom: 38px;
}

.reference-block {
  padding: 34px;
  margin-bottom: 22px;
  background: #fff;
  border: 1px solid var(--tw-line);
  border-radius: var(--tw-radius);
  box-shadow: 0 8px 28px rgba(9, 14, 52, 0.05);
}

.reference-block h3 {
  margin: 0 0 10px;
  font-size: 1.42rem;
  letter-spacing: -0.02em;
}

.reference-block > p:first-of-type {
  margin-top: 0;
}

.query-type-card {
  position: relative;
  overflow: hidden;
}

.query-type-card::before {
  content: attr(data-letter);
  position: absolute;
  top: -18px;
  right: -8px;
  color: rgba(71, 157, 191, 0.08);
  font-size: 5rem;
  font-weight: 900;
  line-height: 1;
}

.filter-layout {
  display: grid;
  grid-template-columns: 1fr 0.82fr;
  align-items: center;
  gap: 30px;
}

.filter-layout img {
  width: 100%;
  border: 1px solid var(--tw-line);
  border-radius: 10px;
  box-shadow: var(--tw-shadow-sm);
}

.quota-visual {
  grid-template-columns: 1fr auto 1fr auto 1.1fr;
}

.quota-number {
  display: block;
  color: var(--tw-primary-deep);
  font-size: 1.55rem;
  font-weight: 850;
  line-height: 1.2;
}

.security-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 20px;
}

.security-card {
  padding: 20px;
  background: var(--tw-surface-alt);
  border: 1px solid var(--tw-line);
  border-radius: 11px;
}

.security-card h4 {
  margin: 0 0 7px;
}

.security-card p {
  margin: 0;
  color: var(--tw-body);
  font-size: 0.88rem;
}

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

.troubleshooting-list details {
  border-bottom: 1px solid var(--tw-line);
}

.troubleshooting-list summary {
  position: relative;
  padding: 18px 44px 18px 0;
  color: var(--tw-ink);
  font-weight: 700;
  cursor: pointer;
  list-style: none;
}

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

.troubleshooting-list summary::after {
  content: "+";
  position: absolute;
  top: 15px;
  right: 4px;
  color: var(--tw-primary);
  font-size: 1.45rem;
  font-weight: 500;
}

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

.troubleshooting-list .answer {
  padding: 0 32px 18px 0;
  color: var(--tw-body);
}

.troubleshooting-list .answer p,
.troubleshooting-list .answer ul {
  margin-top: 0;
}

.next-steps {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

.next-steps li {
  position: relative;
  margin: 0;
  padding: 15px 15px 15px 44px;
  color: var(--tw-body);
  background: var(--tw-surface-alt);
  border: 1px solid var(--tw-line);
  border-radius: 10px;
}

.next-steps li::before {
  content: "→";
  position: absolute;
  top: 14px;
  left: 16px;
  color: var(--tw-primary);
  font-weight: 900;
}

.final-cta {
  position: relative;
  overflow: hidden;
  padding: 62px 0;
  color: #fff;
  background: linear-gradient(135deg, #479dbf, #386788);
}

.final-cta::after {
  content: "";
  position: absolute;
  top: -170px;
  right: -80px;
  width: 420px;
  height: 420px;
  border: 1px solid rgba(255, 255, 255, 0.18);
  border-radius: 50%;
}

.cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 36px;
}

.cta-inner h2 {
  margin: 0 0 7px;
  font-size: clamp(1.8rem, 3.5vw, 2.7rem);
  letter-spacing: -0.03em;
}

.cta-inner p {
  max-width: 660px;
  margin: 0;
  color: rgba(255, 255, 255, 0.84);
}

.site-footer {
  position: relative;
  overflow: hidden;
  padding: 66px 0 28px;
  color: rgba(255, 255, 255, 0.72);
  background: var(--tw-navy);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.75fr 0.75fr;
  gap: 48px;
  padding-bottom: 42px;
}

.footer-brand img {
  width: 205px;
  height: 64px;
  object-fit: contain;
  object-position: left center;
}

.footer-brand p {
  max-width: 430px;
  margin: 16px 0 0;
}

.footer-links h2 {
  margin: 12px 0 14px;
  color: #fff;
  font-size: 0.92rem;
}

.footer-links ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-links li + li {
  margin-top: 8px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}

.footer-links a:hover {
  color: #fff;
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  font-size: 0.82rem;
}

.back-to-top {
  position: fixed;
  right: 26px;
  bottom: 26px;
  z-index: 900;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  color: #fff;
  background: var(--tw-primary);
  border: 0;
  border-radius: 9px;
  box-shadow: var(--tw-shadow-sm);
  font-size: 1.2rem;
  opacity: 0;
  pointer-events: none;
  transform: translateY(10px);
  transition: opacity 0.2s ease, transform 0.2s ease, background 0.2s ease;
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--tw-navy);
}

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

@media (max-width: 1080px) {
  .header-nav {
    gap: 18px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 60px;
  }

  .hero-copy-block {
    max-width: 760px;
  }

  .hero-visual {
    max-width: 900px;
  }

  .quick-path-inner {
    grid-template-columns: 1fr;
  }

  .quick-path h2 {
    text-align: center;
  }

  .guide-layout {
    grid-template-columns: 205px minmax(0, 1fr);
    gap: 34px;
  }

  .pat-flow {
    grid-template-columns: repeat(3, 1fr);
  }

  .pat-flow-step:nth-child(3)::after {
    display: none;
  }
}

@media (max-width: 920px) {
  :root {
    --tw-header-height: 72px;
  }

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

  .header-nav {
    position: absolute;
    top: calc(100% - 2px);
    right: 16px;
    left: 16px;
    display: none;
    align-items: stretch;
    gap: 0;
    padding: 14px;
    color: var(--tw-ink);
    background: #fff;
    border: 1px solid var(--tw-line);
    border-radius: 12px;
    box-shadow: var(--tw-shadow-lg);
  }

  .header-nav.is-open {
    display: flex;
    flex-direction: column;
  }

  .header-nav a {
    padding: 11px 12px;
    border-radius: 7px;
  }

  .header-nav a:not(.header-cta)::after {
    display: none;
  }

  .header-nav a:hover,
  .header-nav a[aria-current="page"] {
    background: var(--tw-primary-soft);
    opacity: 1;
  }

  .header-cta,
  .site-header.is-scrolled .header-cta {
    margin-top: 5px;
    color: #fff !important;
    background: var(--tw-primary);
  }

  .brand-link img {
    width: 165px;
    height: 52px;
  }

  .guide-layout {
    display: block;
  }

  .guide-toc {
    position: relative;
    top: auto;
    margin-bottom: 42px;
  }

  .guide-toc ol {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 3px 14px;
  }

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

  .query-builder-figure {
    position: relative;
    top: auto;
    max-width: 440px;
    margin: 12px auto 0;
  }

  .success-caption {
    grid-template-columns: 1fr 1fr;
  }

  .filter-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .hero {
    padding: 128px 0 62px;
  }

  .hero-grid {
    gap: 46px;
  }

  .hero h1 {
    font-size: clamp(2.35rem, 12vw, 3.6rem);
  }

  .visual-badge {
    display: none;
  }

  .path-list {
    grid-template-columns: repeat(4, 1fr);
    row-gap: 20px;
  }

  .path-list li:nth-child(4)::after {
    display: none;
  }

  .requirement-grid,
  .license-grid,
  .option-grid,
  .query-type-grid,
  .security-grid {
    grid-template-columns: 1fr;
  }

  .prereq-notes {
    grid-template-columns: 1fr;
  }

  .permission-flow,
  .quota-visual,
  .refresh-flow {
    grid-template-columns: 1fr;
  }

  .flow-arrow {
    min-height: 22px;
    transform: rotate(90deg);
  }

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

  .pat-flow {
    grid-template-columns: 1fr 1fr;
  }

  .pat-flow-step::after {
    display: none;
  }

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

  .footer-brand {
    grid-column: 1 / -1;
  }

  .cta-inner {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 540px) {
  .shell,
  .header-inner {
    width: min(100% - 24px, 1160px);
  }

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

  .product-window {
    border-radius: 10px;
  }

  .window-bar {
    height: 27px;
  }

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

  .path-list li:nth-child(2n)::after {
    display: none;
  }

  .prerequisites,
  .guide-body,
  .reference-area {
    padding-top: 66px;
    padding-bottom: 66px;
  }

  .guide-toc ol {
    grid-template-columns: 1fr;
  }

  .step-section {
    padding-bottom: 52px;
    margin-bottom: 52px;
  }

  .step-heading {
    grid-template-columns: 46px 1fr;
    gap: 13px;
  }

  .step-number {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    font-size: 1.08rem;
  }

  .numbered-list > li {
    padding-left: 40px;
  }

  .pat-flow {
    grid-template-columns: 1fr;
  }

  .success-caption {
    grid-template-columns: 1fr;
  }

  .reference-block {
    padding: 24px 20px;
  }

  .next-steps {
    grid-template-columns: 1fr;
  }

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

  .footer-brand {
    grid-column: auto;
  }

  .footer-bottom {
    flex-direction: column;
  }
}

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

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

@media print {
  .site-header,
  .quick-path,
  .guide-toc,
  .final-cta,
  .site-footer,
  .back-to-top,
  .reading-progress,
  .copy-button {
    display: none !important;
  }

  .hero {
    padding: 24px 0;
    color: var(--tw-ink);
    background: #fff;
  }

  .hero-grid,
  .guide-layout,
  .split-layout,
  .filter-layout {
    display: block;
  }

  .hero-copy,
  .hero-meta span {
    color: var(--tw-body);
  }

  .hero-visual {
    margin-top: 24px;
  }

  .step-section,
  .reference-block,
  .requirement-card {
    break-inside: avoid;
  }
}