:root {
  --color-canvas: #F7F4EF;
  --color-ink: #1C1F23;
  --color-header: #12313F;
  --color-accent: #1F6FEB;
  --color-alert: #E4572E;
  --color-guide: #2F9E7A;
  --color-review: #7C5CBF;
  --color-secondary-surface: #E8E3DA;
  --color-muted-ink: #5C6570;
  --color-hairline: #D6D0C6;
  --color-focus: #F2B705;
  --color-white: #FFFFFF;
  --color-header-border: rgba(255, 255, 255, 0.12);
  --color-review-tint: rgba(124, 92, 191, 0.12);
  --color-guide-tint: rgba(47, 158, 122, 0.10);
  --color-accent-tint: rgba(31, 111, 235, 0.12);

  --font-heading: "Inter Tight", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;

  --text-display-size: clamp(2.4rem, 5vw, 4.2rem);
  --text-display-line-height: 1.05;
  --text-display-weight: 700;
  --text-display-tracking: -0.03em;

  --text-h1-size: clamp(2rem, 4vw, 3.2rem);
  --text-h1-line-height: 1.1;
  --text-h1-weight: 700;
  --text-h1-tracking: -0.02em;

  --text-h2-size: clamp(1.5rem, 3vw, 2.2rem);
  --text-h2-line-height: 1.15;
  --text-h2-weight: 650;
  --text-h2-tracking: -0.015em;

  --text-h3-size: clamp(1.2rem, 2.2vw, 1.5rem);
  --text-h3-line-height: 1.2;
  --text-h3-weight: 650;
  --text-h3-tracking: -0.01em;

  --text-h4-size: 1.05rem;
  --text-h4-line-height: 1.3;
  --text-h4-weight: 600;
  --text-h4-tracking: 0;

  --text-body-size: 1rem;
  --text-body-line-height: 1.65;
  --text-body-weight: 400;
  --text-body-tracking: 0;

  --text-body-small-size: 0.875rem;
  --text-body-small-line-height: 1.55;
  --text-body-small-weight: 400;
  --text-body-small-tracking: 0;

  --text-caption-size: 0.75rem;
  --text-caption-line-height: 1.4;
  --text-caption-weight: 500;
  --text-caption-tracking: 0.04em;

  --text-label-size: 0.6875rem;
  --text-label-line-height: 1.3;
  --text-label-weight: 700;
  --text-label-tracking: 0.08em;

  --space-2xs: 4px;
  --space-xs: 8px;
  --space-sm: 12px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-2xl: 48px;
  --space-3xl: 64px;
  --space-4xl: 96px;
  --space-5xl: 128px;

  --container-max: 1200px;
  --container-padding-mobile: 24px;
  --container-padding-desktop: 40px;
  --article-max: 720px;
  --grid-gutter-mobile: 16px;
  --grid-gutter-tablet: 24px;
  --grid-gutter-desktop: 32px;
  --section-gap-mobile: 48px;
  --section-gap-tablet: 64px;
  --section-gap-desktop: 96px;
  --header-vertical-padding: 12px;
  --dense-grid-gap: 8px;

  --radius-none: 0px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-pill: 999px;

  --border-default: 1px solid var(--color-hairline);
  --border-dark-surface: 1px solid var(--color-header-border);
  --shadow-card-hover: 0 2px 8px rgba(28, 31, 35, 0.08);
  --focus-ring: 2px solid var(--color-focus);
  --focus-ring-offset: 2px;

  --touch-target-min: 44px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body-size);
  font-weight: var(--text-body-weight);
  line-height: var(--text-body-line-height);
  letter-spacing: var(--text-body-tracking);
  color: var(--color-ink);
  background-color: var(--color-canvas);
  min-height: 100vh;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
}

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

img {
  object-fit: cover;
}

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

button {
  background: none;
  border: none;
  cursor: pointer;
  min-height: var(--touch-target-min);
  padding: 0;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.15s ease, text-decoration-color 0.15s ease;
}

a:hover {
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-underline-offset: 3px;
}

ul,
ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
  width: 100%;
}

caption {
  text-align: left;
}

th,
td {
  text-align: left;
  vertical-align: top;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--color-ink);
  text-wrap: balance;
  overflow-wrap: break-word;
}

.display {
  font-size: var(--text-display-size);
  line-height: var(--text-display-line-height);
  font-weight: var(--text-display-weight);
  letter-spacing: var(--text-display-tracking);
  margin-block-end: var(--space-lg);
}

h1 {
  font-size: var(--text-h1-size);
  line-height: var(--text-h1-line-height);
  font-weight: var(--text-h1-weight);
  letter-spacing: var(--text-h1-tracking);
  margin-block-end: var(--space-lg);
}

h2 {
  font-size: var(--text-h2-size);
  line-height: var(--text-h2-line-height);
  font-weight: var(--text-h2-weight);
  letter-spacing: var(--text-h2-tracking);
  margin-block-end: var(--space-md);
}

h3 {
  font-size: var(--text-h3-size);
  line-height: var(--text-h3-line-height);
  font-weight: var(--text-h3-weight);
  letter-spacing: var(--text-h3-tracking);
  margin-block-end: var(--space-sm);
}

h4 {
  font-size: var(--text-h4-size);
  line-height: var(--text-h4-line-height);
  font-weight: var(--text-h4-weight);
  letter-spacing: var(--text-h4-tracking);
  margin-block-end: var(--space-sm);
}

h5,
h6 {
  font-size: var(--text-body-size);
  line-height: var(--text-body-line-height);
  font-weight: 600;
  margin-block-end: var(--space-xs);
}

p {
  font-size: var(--text-body-size);
  line-height: var(--text-body-line-height);
  font-weight: var(--text-body-weight);
  letter-spacing: var(--text-body-tracking);
  margin-block-end: var(--space-md);
  overflow-wrap: break-word;
}

blockquote {
  margin-block-end: var(--space-md);
  padding-inline-start: var(--space-lg);
  border-inline-start: 4px solid var(--color-accent);
  color: var(--color-muted-ink);
  font-style: italic;
}

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

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

figcaption {
  font-size: var(--text-caption-size);
  line-height: var(--text-caption-line-height);
  font-weight: var(--text-caption-weight);
  letter-spacing: var(--text-caption-tracking);
  text-transform: uppercase;
  color: var(--color-muted-ink);
  margin-block-start: var(--space-xs);
}

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

ul {
  list-style: disc;
}

ol {
  list-style: decimal;
}

li {
  overflow-wrap: break-word;
}

li > ul,
li > ol {
  margin-block-end: 0;
  margin-block-start: var(--space-xs);
}

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

dt {
  font-weight: 600;
  margin-block-end: var(--space-2xs);
}

dd {
  margin-inline-start: var(--space-lg);
  margin-block-end: var(--space-sm);
}

hr {
  border: none;
  border-block-start: var(--border-default);
  margin-block: var(--space-xl);
}

pre {
  margin-block-end: var(--space-md);
  padding: var(--space-md);
  background-color: var(--color-secondary-surface);
  border: var(--border-default);
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-family: "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;
  font-size: 0.875rem;
  line-height: 1.55;
}

code {
  font-family: "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;
  font-size: 0.875em;
  background-color: var(--color-secondary-surface);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
}

pre code {
  background: none;
  padding: 0;
  font-size: inherit;
}

address {
  font-style: normal;
  margin-block-end: var(--space-md);
}

small {
  font-size: var(--text-body-small-size);
  line-height: var(--text-body-small-line-height);
}

strong,
b {
  font-weight: 650;
}

em,
i {
  font-style: italic;
}

mark {
  background-color: var(--color-focus);
  color: var(--color-ink);
  padding: 0.1em 0.2em;
  border-radius: 2px;
}

abbr[title] {
  text-decoration: underline dotted;
  text-underline-offset: 3px;
  cursor: help;
}

sub,
sup {
  font-size: 0.75em;
  line-height: 0;
  position: relative;
  vertical-align: baseline;
}

sup {
  top: -0.5em;
}

sub {
  bottom: -0.25em;
}

:focus-visible {
  outline: var(--focus-ring);
  outline-offset: var(--focus-ring-offset);
  border-radius: var(--radius-sm);
}

:focus:not(:focus-visible) {
  outline: none;
}

::selection {
  background-color: var(--color-accent);
  color: var(--color-white);
}

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

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

.section {
  margin-block-end: var(--section-gap-mobile);
}

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

.surface-canvas {
  background-color: var(--color-canvas);
}

.surface-secondary {
  background-color: var(--color-secondary-surface);
}

.surface-header {
  background-color: var(--color-header);
  color: var(--color-white);
}

.surface-header h1,
.surface-header h2,
.surface-header h3,
.surface-header h4,
.surface-header h5,
.surface-header h6 {
  color: var(--color-white);
}

.surface-header a {
  color: var(--color-white);
}

.surface-header a:hover {
  color: var(--color-accent);
  text-decoration-color: var(--color-accent);
}

.card {
  background-color: var(--color-canvas);
  border: var(--border-default);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-2px);
}

.card > :last-child {
  margin-block-end: 0;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-size: var(--text-label-size);
  line-height: var(--text-label-line-height);
  font-weight: var(--text-label-weight);
  letter-spacing: var(--text-label-tracking);
  text-transform: uppercase;
  padding: var(--space-2xs) var(--space-xs);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.badge--accent {
  background-color: var(--color-accent-tint);
  color: var(--color-accent);
}

.badge--alert {
  background-color: var(--color-alert);
  color: var(--color-white);
}

.badge--guide {
  background-color: var(--color-guide-tint);
  color: var(--color-guide);
}

.badge--review {
  background-color: var(--color-review-tint);
  color: var(--color-review);
}

.badge--secondary {
  background-color: var(--color-secondary-surface);
  color: var(--color-ink);
}

.badge--muted {
  background-color: var(--color-secondary-surface);
  color: var(--color-muted-ink);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  font-family: var(--font-body);
  font-size: var(--text-body-small-size);
  font-weight: 600;
  letter-spacing: 0.01em;
  line-height: 1.2;
  padding: var(--space-sm) var(--space-lg);
  min-height: var(--touch-target-min);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
}

.btn:hover {
  text-decoration: none;
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background-color: #1a5fc9;
  border-color: #1a5fc9;
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-ink);
  border-color: var(--color-hairline);
}

.btn--secondary:hover {
  background-color: var(--color-secondary-surface);
  border-color: var(--color-hairline);
}

.btn--alert {
  background-color: var(--color-alert);
  color: var(--color-white);
  border-color: var(--color-alert);
}

.btn--alert:hover {
  background-color: #c94a24;
  border-color: #c94a24;
}

.btn--ghost {
  background-color: transparent;
  color: var(--color-accent);
  border-color: transparent;
  padding-inline: var(--space-sm);
}

.btn--ghost:hover {
  background-color: var(--color-accent-tint);
}

.btn--small {
  padding: var(--space-xs) var(--space-sm);
  min-height: 36px;
  font-size: var(--text-caption-size);
  letter-spacing: var(--text-caption-tracking);
  text-transform: uppercase;
}

.btn--large {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--text-body-size);
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.tag {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-label-size);
  line-height: var(--text-label-line-height);
  font-weight: var(--text-label-weight);
  letter-spacing: var(--text-label-tracking);
  text-transform: uppercase;
  padding: var(--space-2xs) var(--space-xs);
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.tag--accent {
  background-color: var(--color-accent-tint);
  color: var(--color-accent);
}

.tag--alert {
  background-color: var(--color-alert);
  color: var(--color-white);
}

.tag--guide {
  background-color: var(--color-guide-tint);
  color: var(--color-guide);
}

.tag--review {
  background-color: var(--color-review-tint);
  color: var(--color-review);
}

.tag--secondary {
  background-color: var(--color-secondary-surface);
  color: var(--color-ink);
}

.tag--muted {
  background-color: var(--color-secondary-surface);
  color: var(--color-muted-ink);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  font-size: var(--text-caption-size);
  line-height: var(--text-caption-line-height);
  font-weight: 500;
  letter-spacing: var(--text-caption-tracking);
  text-transform: uppercase;
  padding: var(--space-xs) var(--space-sm);
  min-height: var(--touch-target-min);
  border-radius: var(--radius-pill);
  background-color: var(--color-secondary-surface);
  color: var(--color-ink);
  border: 1px solid transparent;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
  cursor: pointer;
  white-space: nowrap;
}

.chip:hover {
  background-color: var(--color-hairline);
  text-decoration: none;
}

.chip[aria-pressed="true"],
.chip--selected {
  background-color: var(--color-accent);
  color: var(--color-white);
}

.chip[aria-pressed="true"]:hover,
.chip--selected:hover {
  background-color: #1a5fc9;
}

.score-block {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background-color: var(--color-review-tint);
  border: 1px solid var(--color-review);
  border-radius: var(--radius-md);
  padding: var(--space-sm) var(--space-md);
  min-width: 72px;
  min-height: 72px;
  color: var(--color-review);
}

.score-block__value {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.01em;
  font-variant-numeric: tabular-nums;
}

.score-block__label {
  font-size: var(--text-label-size);
  line-height: var(--text-label-line-height);
  font-weight: var(--text-label-weight);
  letter-spacing: var(--text-label-tracking);
  text-transform: uppercase;
  margin-block-start: var(--space-2xs);
}

.divider {
  border: none;
  border-block-start: var(--border-default);
  margin-block: var(--space-xl);
}

.divider--dark {
  border-block-start-color: var(--color-header-border);
}

.meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs) var(--space-sm);
  font-size: var(--text-caption-size);
  line-height: var(--text-caption-line-height);
  font-weight: var(--text-caption-weight);
  letter-spacing: var(--text-caption-tracking);
  text-transform: uppercase;
  color: var(--color-muted-ink);
}

.meta__item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2xs);
  white-space: nowrap;
}

.meta__separator {
  color: var(--color-hairline);
  user-select: none;
}

.meta a {
  color: var(--color-muted-ink);
  text-decoration: none;
}

.meta a:hover {
  color: var(--color-accent);
  text-decoration: underline;
  text-underline-offset: 2px;
}

.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;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  z-index: 10000;
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: var(--text-body-small-size);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: var(--space-md);
  color: var(--color-white);
  text-decoration: none;
}

.tabular-nums {
  font-variant-numeric: tabular-nums;
}

.text-muted {
  color: var(--color-muted-ink);
}

.text-accent {
  color: var(--color-accent);
}

.text-alert {
  color: var(--color-alert);
}

.text-guide {
  color: var(--color-guide);
}

.text-review {
  color: var(--color-review);
}

.text-label {
  font-size: var(--text-label-size);
  line-height: var(--text-label-line-height);
  font-weight: var(--text-label-weight);
  letter-spacing: var(--text-label-tracking);
  text-transform: uppercase;
}

.text-caption {
  font-size: var(--text-caption-size);
  line-height: var(--text-caption-line-height);
  font-weight: var(--text-caption-weight);
  letter-spacing: var(--text-caption-tracking);
  text-transform: uppercase;
}

.text-body-small {
  font-size: var(--text-body-small-size);
  line-height: var(--text-body-small-line-height);
}

.radius-sm {
  border-radius: var(--radius-sm);
}

.radius-md {
  border-radius: var(--radius-md);
}

.radius-lg {
  border-radius: var(--radius-lg);
}

.radius-pill {
  border-radius: var(--radius-pill);
}

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

.aspect-16-9 {
  aspect-ratio: 16 / 9;
}

.aspect-3-2 {
  aspect-ratio: 3 / 2;
}

.aspect-4-3 {
  aspect-ratio: 4 / 3;
}

.aspect-1-1 {
  aspect-ratio: 1 / 1;
}

.overflow-hidden {
  overflow: hidden;
}

.relative {
  position: relative;
}

.w-full {
  width: 100%;
}

.h-full {
  height: 100%;
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-row {
  flex-direction: row;
}

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

.flex-nowrap {
  flex-wrap: nowrap;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.items-stretch {
  align-items: stretch;
}

.justify-center {
  justify-content: center;
}

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

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

.justify-between {
  justify-content: space-between;
}

.justify-around {
  justify-content: space-around;
}

.gap-2xs {
  gap: var(--space-2xs);
}

.gap-xs {
  gap: var(--space-xs);
}

.gap-sm {
  gap: var(--space-sm);
}

.gap-md {
  gap: var(--space-md);
}

.gap-lg {
  gap: var(--space-lg);
}

.gap-xl {
  gap: var(--space-xl);
}

.gap-2xl {
  gap: var(--space-2xl);
}

.flex-1 {
  flex: 1 1 0%;
  min-width: 0;
}

.flex-auto {
  flex: 1 1 auto;
  min-width: 0;
}

.flex-none {
  flex: none;
}

.flex-grow {
  flex-grow: 1;
}

.shrink-0 {
  flex-shrink: 0;
}

.shrink {
  flex-shrink: 1;
  min-width: 0;
}

.min-w-0 {
  min-width: 0;
}

.truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.break-words {
  overflow-wrap: break-word;
  word-break: break-word;
}

.list-unstyled {
  list-style: none;
  padding-inline-start: 0;
  margin-block-end: 0;
}

.list-unstyled li {
  margin-block-end: 0;
}

.content-list {
  list-style: disc;
  padding-inline-start: var(--space-lg);
  margin-block-end: var(--space-md);
}

.content-list li {
  margin-block-end: var(--space-xs);
}

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

.content-list > li > ul,
.content-list > li > ol {
  margin-block-start: var(--space-xs);
  margin-block-end: 0;
}

.content-list > li > ul > li,
.content-list > li > ol > li {
  margin-block-end: var(--space-2xs);
}

.content-list > li > ul > li:last-child,
.content-list > li > ol > li:last-child {
  margin-block-end: 0;
}

.sr-only-focusable:not(:focus):not(:focus-within) {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@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;
    transition-delay: 0ms !important;
  }

  .card:hover {
    transform: none;
    box-shadow: none;
  }
}

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

  .article-container {
    padding-inline: var(--container-padding-desktop);
  }

  .section {
    margin-block-end: var(--section-gap-tablet);
  }
}

@media (min-width: 1024px) {
  .section {
    margin-block-end: var(--section-gap-desktop);
  }
}