:root {
  --color-graphite-900: #2F2F2F;
  --color-off-white-100: #F5F5F0;
  --color-red-600: #D32F2F;
  --color-blue-600: #1E88E5;
  --color-graphite-700: #3A3A3A;
  --color-graphite-500: #5A5A5A;
  --color-off-white-200: #E8E8E3;
  --font-heading: 'Rajdhani', 'Arial Narrow', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
  --font-mono: 'Roboto Mono', 'Courier New', monospace;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;
  --space-7: 48px;
  --space-8: 64px;
  --space-9: 96px;
  --container-max: 1200px;
  --container-gutter-mobile: 24px;
  --container-gutter-desktop: 48px;
  --card-padding-desktop: 24px;
  --card-padding-mobile: 16px;
  --grid-gap: 16px;
  --shadow-card: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow-elevated: 0 4px 8px rgba(0, 0, 0, 0.2);
  --transition-color: 150ms ease;
  --transition-transform: 200ms ease;
  --radius-none: 0px;
  --radius-small: 4px;
  --radius-medium: 8px;
  --focus-ring: 2px solid var(--color-blue-600);
  --focus-ring-offset: 2px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  font-weight: 400;
  color: var(--color-off-white-100);
  background-color: var(--color-graphite-900);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
  text-align: inherit;
}

a {
  color: var(--color-blue-600);
  text-decoration: none;
  transition: color var(--transition-color);
}

a:hover {
  color: var(--color-off-white-100);
}

ul,
ol {
  list-style-position: inside;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-off-white-100);
  margin-block-end: var(--space-4);
}

h1 {
  font-size: clamp(28px, 5vw, 36px);
  line-height: 1.2;
  margin-block-end: var(--space-5);
}

h2 {
  font-size: clamp(22px, 3.5vw, 28px);
  line-height: 1.3;
  font-weight: 600;
  margin-block-end: var(--space-4);
}

h3 {
  font-size: clamp(18px, 2.5vw, 22px);
  line-height: 1.4;
  font-weight: 600;
  margin-block-end: var(--space-3);
}

h4 {
  font-size: 18px;
  line-height: 1.4;
  font-weight: 600;
  margin-block-end: var(--space-3);
}

h5 {
  font-size: 16px;
  line-height: 1.5;
  font-weight: 600;
  margin-block-end: var(--space-2);
}

h6 {
  font-size: 14px;
  line-height: 1.5;
  font-weight: 600;
  margin-block-end: var(--space-2);
}

p {
  margin-block-end: var(--space-4);
  line-height: 1.6;
}

p:last-child {
  margin-block-end: 0;
}

blockquote {
  margin-block-end: var(--space-4);
  padding-inline-start: var(--space-4);
  border-inline-start: 3px solid var(--color-red-600);
  color: var(--color-off-white-200);
  font-style: italic;
}

blockquote:last-child {
  margin-block-end: 0;
}

ul,
ol {
  margin-block-end: var(--space-4);
  padding-inline-start: var(--space-5);
}

ul:last-child,
ol:last-child {
  margin-block-end: 0;
}

dl {
  margin-block-end: var(--space-4);
}

dl:last-child {
  margin-block-end: 0;
}

dt {
  font-weight: 600;
  color: var(--color-off-white-100);
  margin-block-start: var(--space-3);
}

dd {
  margin-inline-start: var(--space-4);
  color: var(--color-off-white-200);
}

figure {
  margin-block-end: var(--space-4);
}

figure:last-child {
  margin-block-end: 0;
}

figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  color: var(--color-off-white-200);
  margin-block-start: var(--space-2);
  text-align: center;
}

hr {
  border: none;
  border-block-start: 1px solid var(--color-graphite-500);
  margin-block: var(--space-6);
}

address {
  font-style: normal;
  line-height: 1.6;
}

pre {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  background-color: var(--color-graphite-700);
  color: var(--color-off-white-100);
  padding: var(--space-4);
  border: 1px solid var(--color-graphite-500);
  border-radius: var(--radius-small);
  overflow-x: auto;
  margin-block-end: var(--space-4);
}

pre:last-child {
  margin-block-end: 0;
}

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: var(--color-graphite-700);
  color: var(--color-off-white-100);
  padding: 2px 6px;
  border-radius: var(--radius-small);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-block-end: var(--space-4);
  font-size: 14px;
  line-height: 1.5;
}

table:last-child {
  margin-block-end: 0;
}

caption {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-off-white-200);
  text-align: start;
  margin-block-end: var(--space-2);
}

th,
td {
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--color-graphite-500);
  text-align: start;
  vertical-align: top;
}

th {
  font-family: var(--font-heading);
  font-weight: 600;
  background-color: var(--color-graphite-700);
  color: var(--color-off-white-100);
}

td {
  color: var(--color-off-white-200);
}

form {
  margin-block-end: var(--space-4);
}

form:last-child {
  margin-block-end: 0;
}

fieldset {
  border: 1px solid var(--color-graphite-500);
  padding: var(--space-4);
  margin-block-end: var(--space-4);
  border-radius: var(--radius-small);
}

fieldset:last-child {
  margin-block-end: 0;
}

legend {
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--color-off-white-100);
  padding-inline: var(--space-2);
}

label {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-off-white-200);
  margin-block-end: var(--space-1);
}

input,
textarea,
select {
  width: 100%;
  background-color: var(--color-graphite-700);
  color: var(--color-off-white-100);
  border: 1px solid var(--color-graphite-500);
  border-radius: var(--radius-small);
  padding: var(--space-3) var(--space-4);
  font-size: 16px;
  line-height: 1.5;
  transition: border-color var(--transition-color), box-shadow var(--transition-color);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-blue-600);
  box-shadow: 0 0 0 2px rgba(30, 136, 229, 0.3);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-graphite-500);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23F5F5F0' stroke-width='2' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-inline-end: var(--space-7);
}

input[type="checkbox"],
input[type="radio"] {
  width: auto;
  margin-inline-end: var(--space-2);
  vertical-align: middle;
}

input[type="submit"],
input[type="reset"],
input[type="button"] {
  width: auto;
  cursor: pointer;
}

.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-gutter-mobile);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--container-gutter-desktop);
  }
}

.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;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: 0;
  z-index: 9999;
  background-color: var(--color-red-600);
  color: var(--color-off-white-100);
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-mono);
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: top var(--transition-transform);
}

.skip-link:focus {
  top: 0;
  color: var(--color-off-white-100);
}

.surface-card {
  background-color: var(--color-graphite-700);
  border: 1px solid var(--color-graphite-500);
  border-radius: var(--radius-medium);
  box-shadow: var(--shadow-card);
  padding: var(--card-padding-mobile);
}

@media (min-width: 768px) {
  .surface-card {
    padding: var(--card-padding-desktop);
  }
}

.surface-light {
  background-color: var(--color-off-white-200);
  color: var(--color-graphite-900);
  border: 1px solid var(--color-graphite-500);
  border-radius: var(--radius-medium);
  padding: var(--card-padding-mobile);
}

@media (min-width: 768px) {
  .surface-light {
    padding: var(--card-padding-desktop);
  }
}

.surface-light h1,
.surface-light h2,
.surface-light h3,
.surface-light h4,
.surface-light h5,
.surface-light h6 {
  color: var(--color-graphite-900);
}

.surface-light p,
.surface-light li,
.surface-light dd {
  color: var(--color-graphite-900);
}

.surface-light a {
  color: var(--color-blue-600);
}

.surface-light a:hover {
  color: var(--color-red-600);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 16px;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-none);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition-color), border-color var(--transition-color), color var(--transition-color), transform var(--transition-transform), box-shadow var(--transition-color);
  text-align: center;
  white-space: nowrap;
  min-width: 0;
}

.btn:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
}

.btn-primary {
  background-color: var(--color-red-600);
  color: var(--color-off-white-100);
  border-color: var(--color-red-600);
}

.btn-primary:hover {
  background-color: #B71C1C;
  border-color: #B71C1C;
  color: var(--color-off-white-100);
  transform: translateY(-1px);
  box-shadow: var(--shadow-card);
}

.btn-secondary {
  background-color: var(--color-blue-600);
  color: var(--color-off-white-100);
  border-color: var(--color-blue-600);
}

.btn-secondary:hover {
  background-color: #1565C0;
  border-color: #1565C0;
  color: var(--color-off-white-100);
  transform: translateY(-1px);
  box-shadow: var(--shadow-card);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-off-white-100);
  border-color: var(--color-graphite-500);
}

.btn-outline:hover {
  background-color: var(--color-graphite-700);
  border-color: var(--color-blue-600);
  color: var(--color-off-white-100);
}

.btn-sm {
  font-size: 14px;
  padding: var(--space-2) var(--space-4);
}

.btn-lg {
  font-size: 18px;
  padding: var(--space-4) var(--space-7);
}

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-blue-600);
  border: 1px solid var(--color-blue-600);
  border-radius: var(--radius-small);
  padding: 2px var(--space-2);
  background-color: transparent;
}

.tag-red {
  color: var(--color-red-600);
  border-color: var(--color-red-600);
}

.tag-light {
  color: var(--color-off-white-100);
  border-color: var(--color-off-white-100);
}

.mono-label {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-red-600);
  margin-block-end: var(--space-2);
  display: block;
}

.section-heading {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-block-end: var(--space-5);
}

.section-heading h2,
.section-heading h3 {
  margin-block-end: 0;
}

.section-heading .mono-label {
  margin-block-end: 0;
}

.flex {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  min-width: 0;
}

.flex > * {
  min-width: 0;
  flex-shrink: 0;
}

.flex-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
}

.flex-col > * {
  min-width: 0;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
  min-width: 0;
}

.flex-center > * {
  min-width: 0;
  flex-shrink: 0;
}

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
  min-width: 0;
}

.flex-between > * {
  min-width: 0;
  flex-shrink: 0;
}

.flex-start {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  flex-wrap: wrap;
  min-width: 0;
}

.flex-start > * {
  min-width: 0;
  flex-shrink: 0;
}

.flex-end {
  display: flex;
  align-items: flex-end;
  gap: var(--space-4);
  flex-wrap: wrap;
  min-width: 0;
}

.flex-end > * {
  min-width: 0;
  flex-shrink: 0;
}

.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }
.gap-7 { gap: var(--space-7); }
.gap-8 { gap: var(--space-8); }

.mt-1 { margin-block-start: var(--space-1); }
.mt-2 { margin-block-start: var(--space-2); }
.mt-3 { margin-block-start: var(--space-3); }
.mt-4 { margin-block-start: var(--space-4); }
.mt-5 { margin-block-start: var(--space-5); }
.mt-6 { margin-block-start: var(--space-6); }
.mt-7 { margin-block-start: var(--space-7); }
.mt-8 { margin-block-start: var(--space-8); }

.mb-1 { margin-block-end: var(--space-1); }
.mb-2 { margin-block-end: var(--space-2); }
.mb-3 { margin-block-end: var(--space-3); }
.mb-4 { margin-block-end: var(--space-4); }
.mb-5 { margin-block-end: var(--space-5); }
.mb-6 { margin-block-end: var(--space-6); }
.mb-7 { margin-block-end: var(--space-7); }
.mb-8 { margin-block-end: var(--space-8); }

.text-center { text-align: center; }
.text-start { text-align: start; }
.text-end { text-align: end; }

.text-sm { font-size: 14px; line-height: 1.5; }
.text-xs { font-size: 12px; line-height: 1.4; }
.text-lg { font-size: 18px; line-height: 1.6; }
.text-xl { font-size: 20px; line-height: 1.5; }

.font-mono { font-family: var(--font-mono); }
.font-heading { font-family: var(--font-heading); }

.uppercase { text-transform: uppercase; letter-spacing: 0.08em; }

.text-red { color: var(--color-red-600); }
.text-blue { color: var(--color-blue-600); }
.text-off-white { color: var(--color-off-white-100); }
.text-graphite-500 { color: var(--color-graphite-500); }

.bg-graphite-900 { background-color: var(--color-graphite-900); }
.bg-graphite-700 { background-color: var(--color-graphite-700); }
.bg-off-white-200 { background-color: var(--color-off-white-200); }

.border-red { border-color: var(--color-red-600); }
.border-blue { border-color: var(--color-blue-600); }
.border-graphite-500 { border-color: var(--color-graphite-500); }

.radius-none { border-radius: var(--radius-none); }
.radius-small { border-radius: var(--radius-small); }
.radius-medium { border-radius: var(--radius-medium); }

.shadow-card { box-shadow: var(--shadow-card); }
.shadow-elevated { box-shadow: var(--shadow-elevated); }

.card-hover {
  transition: transform var(--transition-transform), box-shadow var(--transition-color), border-color var(--transition-color);
}

.card-hover:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-elevated);
  border-color: var(--color-blue-600);
}

.scan-line {
  position: relative;
  overflow: hidden;
}

.scan-line::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    transparent 50%,
    rgba(245, 245, 240, 0.03) 50%,
    rgba(245, 245, 240, 0.03) 51%,
    transparent 51%,
    transparent 100%
  );
  background-size: 100% 4px;
  pointer-events: none;
  z-index: 1;
}

.scan-line-animated::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    transparent 0%,
    rgba(30, 136, 229, 0.08) 50%,
    transparent 100%
  );
  background-size: 100% 200%;
  animation: scanMove 4s linear infinite;
  pointer-events: none;
  z-index: 1;
}

@keyframes scanMove {
  0% {
    background-position: 0 0;
  }
  100% {
    background-position: 0 200%;
  }
}

.grid-pattern {
  background-image:
    linear-gradient(rgba(90, 90, 90, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(90, 90, 90, 0.15) 1px, transparent 1px);
  background-size: 32px 32px;
}

.diagonal-accent {
  position: relative;
}

.diagonal-accent::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-red-600) 0%, var(--color-red-600) 60%, transparent 60%, transparent 100%);
  background-size: 24px 100%;
}

.content-list {
  list-style: none;
  padding-inline-start: 0;
  margin-block-end: var(--space-4);
}

.content-list li {
  padding-block: var(--space-2);
  border-block-end: 1px solid var(--color-graphite-500);
  color: var(--color-off-white-200);
}

.content-list li:last-child {
  border-block-end: none;
  padding-block-end: 0;
}

.content-list li:first-child {
  padding-block-start: 0;
}

.content-list:last-child {
  margin-block-end: 0;
}

.content-list-compact li {
  padding-block: var(--space-1);
}

.content-list-spaced li {
  padding-block: var(--space-3);
}

@media (max-width: 767px) {
  h1 {
    font-size: 28px;
  }

  h2 {
    font-size: 22px;
  }

  h3 {
    font-size: 18px;
  }

  .btn-lg {
    font-size: 16px;
    padding: var(--space-3) var(--space-5);
  }

  .flex,
  .flex-center,
  .flex-between,
  .flex-start,
  .flex-end {
    gap: var(--space-3);
  }
}

@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;
  }
}