:root {
  --bg: #eef2f6;
  --surface: #ffffff;
  --line: #d8dfe7;
  --line-soft: #e6ebf1;
  --ink: #101828;
  --ink-soft: #55606e;
  --ink-faint: #636e7e;
  --blue: #1b4b73;
  --blue-dark: #123650;
  --blue-tint: #e3ebf2;
  --copper: #9b5619;
  --copper-tint: #f5e9db;
  --green: #1b794b;
  --green-tint: #e3f4ec;
  --red: #b3261e;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --container: 960px;
  --font-display: "Space Grotesk", "Segoe UI", sans-serif;
  --font-body: "Plus Jakarta Sans", "Segoe UI", sans-serif;
  --font-mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  --byte-w: 52px;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

section[id],
#main,
#mac-input {
  scroll-margin-top: 88px;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--blue);
}

h1,
h2,
h3 {
  font-family: var(--font-display);
  line-height: 1.15;
  margin: 0;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

button {
  font-family: inherit;
  cursor: pointer;
}

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

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
  border-radius: 4px;
}

[tabindex="-1"]:focus,
[tabindex="-1"]:focus-visible {
  outline: none;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  background: var(--ink);
  color: #fff;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  z-index: 100;
  transition: top 0.15s ease;
}

.skip-link:focus {
  top: 1rem;
}

.wrap {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  background-color: currentColor;
  -webkit-mask-size: contain;
  mask-size: contain;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
  -webkit-mask-position: center;
  mask-position: center;
}

.icon-sm {
  width: 16px;
  height: 16px;
}

.icon-lg {
  width: 26px;
  height: 26px;
}

.icon--search {
  -webkit-mask-image: url("assets/icons/search.svg");
  mask-image: url("assets/icons/search.svg");
}

.icon--close {
  -webkit-mask-image: url("assets/icons/close.svg");
  mask-image: url("assets/icons/close.svg");
}

.icon--copy {
  -webkit-mask-image: url("assets/icons/copy.svg");
  mask-image: url("assets/icons/copy.svg");
}

.icon--check {
  -webkit-mask-image: url("assets/icons/check.svg");
  mask-image: url("assets/icons/check.svg");
}

.icon--shield {
  -webkit-mask-image: url("assets/icons/shield.svg");
  mask-image: url("assets/icons/shield.svg");
}

.icon--bolt {
  -webkit-mask-image: url("assets/icons/bolt.svg");
  mask-image: url("assets/icons/bolt.svg");
}

.icon--unlock {
  -webkit-mask-image: url("assets/icons/unlock.svg");
  mask-image: url("assets/icons/unlock.svg");
}

.icon--network {
  -webkit-mask-image: url("assets/icons/network.svg");
  mask-image: url("assets/icons/network.svg");
}

.icon--alert {
  -webkit-mask-image: url("assets/icons/alert.svg");
  mask-image: url("assets/icons/alert.svg");
}

.icon--info {
  -webkit-mask-image: url("assets/icons/info.svg");
  mask-image: url("assets/icons/info.svg");
}

.icon--chevron {
  -webkit-mask-image: url("assets/icons/chevron-down.svg");
  mask-image: url("assets/icons/chevron-down.svg");
}

.icon--arrow {
  -webkit-mask-image: url("assets/icons/arrow-right.svg");
  mask-image: url("assets/icons/arrow-right.svg");
}

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 20;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  width: 34px;
  height: 34px;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

main {
  display: block;
  position: relative;
}

.hero-map {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  pointer-events: none;
  z-index: 0;
}

.hero-map img {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
}

.hero {
  position: relative;
  z-index: 1;
  min-height: min(75vw, 1200px);
  padding: 64px 0 24px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--blue);
  background: var(--blue-tint);
  padding: 6px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(2.1rem, 4.4vw, 3.1rem);
  color: var(--ink);
}

.hero-sub {
  margin-top: 18px;
  color: var(--ink-soft);
  font-size: 1.08rem;
}

.lookup-panel {
  margin-top: 36px;
  margin-left: auto;
  margin-right: auto;
  max-width: 500px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.lookup-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.input-shell {
  width: 100%;
  height: 60px;
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1.5px solid var(--line);
  border-radius: var(--radius-md);
  padding: 0 16px;
  background: var(--bg);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.input-shell:focus-within {
  border-color: var(--blue);
  background: var(--surface);
}

.input-shell .icon {
  color: var(--ink-faint);
}

#mac-input {
  flex: 1;
  height: 100%;
  border: 0;
  background: transparent;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  letter-spacing: 0.04em;
  padding: 0;
  color: var(--ink);
  min-width: 0;
}

#mac-input::placeholder {
  color: var(--ink-faint);
  letter-spacing: 0.04em;
}

#mac-input:focus {
  outline: none;
}

.clear-btn {
  border: 0;
  background: transparent;
  color: var(--ink-faint);
  padding: 6px;
  border-radius: 999px;
  display: none;
  align-items: center;
  justify-content: center;
}

.clear-btn.is-visible {
  display: inline-flex;
}

.clear-btn:hover {
  color: var(--ink);
  background: var(--line-soft);
}

.btn {
  border: 0;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 1rem;
  padding: 0 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  white-space: nowrap;
}

.lookup-form .btn-primary {
  width: 100%;
  height: 66px;
  font-size: 1.08rem;
}

.btn-primary {
  background: var(--blue);
  color: #fff;
}

.btn-primary:hover {
  background: var(--blue-dark);
}

.btn-primary:disabled {
  background: var(--ink-faint);
  cursor: progress;
}

.btn-ghost {
  background: transparent;
  border: 1.5px solid var(--line);
  color: var(--ink);
  padding: 0 18px;
}

.btn-ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
}

.btn-sm {
  font-size: 0.85rem;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
}

.result-area {
  margin-top: 22px;
}

.result-card,
.error-card {
  border-top: 1px solid var(--line);
  padding-top: 22px;
  margin-top: 4px;
}

.byte-row {
  display: grid;
  grid-template-columns: repeat(3, var(--byte-w)) 9px repeat(3, var(--byte-w));
  column-gap: 8px;
}

.byte-row .sep {
  width: 1px;
  justify-self: center;
  align-self: stretch;
  background: var(--line);
}

.byte {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.05rem;
  color: #fff;
  width: var(--byte-w);
  height: var(--byte-w);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  letter-spacing: 0.02em;
}

.byte-vendor {
  background: var(--blue);
}

.byte-device {
  background: var(--copper);
}

.byte-legend {
  display: grid;
  grid-template-columns: repeat(3, var(--byte-w)) 9px repeat(3, var(--byte-w));
  column-gap: 8px;
  row-gap: 10px;
  margin-top: 14px;
  font-size: 0.85rem;
  color: var(--ink-soft);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}

.legend-item--vendor {
  grid-column: 1 / 4;
}

.legend-item--device {
  grid-column: 5 / 8;
}

.legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  display: inline-block;
}

.legend-dot.vendor {
  background: var(--blue);
}

.legend-dot.device {
  background: var(--copper);
}

.result-body {
  margin-top: 22px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  flex-wrap: wrap;
}

.result-vendor-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  font-weight: 600;
}

.result-vendor-name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: 4px;
}

.result-meta {
  margin-top: 6px;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.badge-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
}

.badge .icon {
  color: inherit;
}

.badge-good {
  background: var(--green-tint);
  border-color: var(--green-tint);
  color: var(--green);
}

.badge-neutral {
  background: var(--blue-tint);
  border-color: var(--blue-tint);
  color: var(--blue);
}

.badge-warn {
  background: var(--copper-tint);
  border-color: var(--copper-tint);
  color: var(--copper);
}

.result-actions {
  display: flex;
  gap: 10px;
  flex-shrink: 0;
}

.error-card {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  color: var(--red);
}

.error-card .icon {
  color: var(--red);
  margin-top: 2px;
}

.error-title {
  font-weight: 700;
  font-size: 1.02rem;
}

.error-text {
  color: var(--ink-soft);
  margin-top: 4px;
  font-size: 0.95rem;
}

.loading-row {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--ink-soft);
  font-size: 0.95rem;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.spinner {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 2.5px solid var(--line);
  border-top-color: var(--blue);
  animation: spin 0.7s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

section {
  position: relative;
  padding: 68px 0;
}

section:not(.hero) {
  background: var(--bg);
}

.section-head {
  margin-bottom: 40px;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--copper);
  font-weight: 600;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin-top: 10px;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.value-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 26px;
}

.value-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--blue-tint);
  color: var(--blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.value-card h3 {
  font-size: 1.08rem;
}

.value-card p {
  margin-top: 10px;
  color: var(--ink-soft);
  font-size: 0.94rem;
}

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.step {
  border-left: 2px solid var(--line);
  padding-left: 18px;
}

.step-number {
  font-family: var(--font-mono);
  color: var(--copper);
  font-weight: 600;
  font-size: 0.95rem;
}

.step h3 {
  font-size: 1.02rem;
  margin-top: 10px;
}

.step p {
  margin-top: 8px;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

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

.faq-item {
  border-bottom: 1px solid var(--line);
  padding: 6px 0;
}

.faq-item summary {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 4px;
  font-weight: 600;
  font-size: 1.02rem;
  cursor: pointer;
}

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

.faq-item .icon--chevron {
  color: var(--ink-faint);
  transition: transform 0.18s ease;
  flex-shrink: 0;
}

.faq-item[open] .icon--chevron {
  transform: rotate(180deg);
  color: var(--blue);
}

.faq-item p {
  color: var(--ink-soft);
  padding: 0 4px 20px;
  max-width: 68ch;
  font-size: 0.96rem;
}

.about-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
}

.about-panel .icon-lg {
  color: var(--blue);
  flex-shrink: 0;
}

.about-panel p {
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.about-panel p + p {
  margin-top: 12px;
}

.cta-band {
  background: var(--blue);
  border-radius: var(--radius-lg);
  padding: 44px;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cta-band h2 {
  color: #fff;
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
}

.cta-band p {
  color: #cfdced;
  margin-top: 8px;
  max-width: 46ch;
}

.cta-band .btn-ghost {
  border-color: rgba(255, 255, 255, 0.4);
  color: #fff;
  height: 56px;
  padding: 0 28px;
  font-size: 1.02rem;
  flex-shrink: 0;
}

.cta-band .btn-ghost:hover {
  border-color: #fff;
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.site-footer {
  border-top: 1px solid var(--line);
  padding: 48px 0 32px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}

.footer-brand-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.footer-brand .brand-mark {
  width: 28px;
  height: 28px;
}

.footer-brand .brand-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
}

.footer-tagline {
  color: var(--ink-soft);
  font-size: 0.92rem;
  margin-top: 12px;
  max-width: 36ch;
}

.footer-links {
  display: flex;
  gap: 48px;
  flex-wrap: wrap;
}

.footer-col h3 {
  margin: 0 0 12px;
  font-family: var(--font-body);
  line-height: 1.55;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
}

.footer-col a {
  display: block;
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 0.92rem;
  padding: 5px 0;
}

.footer-col a:hover {
  color: var(--blue);
}

.footer-bottom {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line-soft);
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  color: var(--ink-faint);
  font-size: 0.85rem;
}

@media (max-width: 860px) {
  .value-grid {
    grid-template-columns: 1fr;
  }
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .result-body {
    flex-direction: column;
  }
  .result-actions {
    width: 100%;
  }
}

@media (max-width: 620px) {
  :root {
    --byte-w: 44px;
  }
  .steps {
    grid-template-columns: 1fr;
  }
  .site-header .wrap {
    height: auto;
    padding-top: 14px;
    padding-bottom: 14px;
  }
  .lookup-panel {
    padding: 20px;
  }
  .byte {
    font-size: 0.92rem;
  }
  .cta-band {
    flex-direction: column;
    align-items: flex-start;
  }
  .about-panel {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
  html {
    scroll-behavior: auto;
  }
}