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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg-app);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: var(--text-md);
  line-height: var(--leading-body);
  font-variant-numeric: tabular-nums;
  overflow-wrap: break-word;
}

img {
  max-width: 100%;
  height: auto;
}

h1,
h2,
h3 {
  line-height: var(--leading-title);
  margin: 0 0 var(--space-4);
  scroll-margin-top: calc(var(--header-h) + var(--space-4));
}

h1 {
  font-size: var(--text-2xl);
}

h2 {
  font-size: var(--text-xl);
}

a {
  color: var(--accent);
  text-underline-offset: 0.15em;
}

pre,
code,
kbd {
  font-family: var(--font-mono);
}

pre {
  overflow-x: auto;
  scrollbar-color: var(--border-strong) var(--bg-app);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

main:focus {
  outline: none;
}

main:focus-visible {
  outline: 2px solid var(--accent);
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
}


.l-container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (min-width: 640px) {
  .l-container {
    padding-inline: var(--space-6);
  }
}


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

.u-narrow {
  display: none;
}

@media (max-width: 419.98px) {
  .u-wide {
    display: none;
  }

  .u-narrow {
    display: inline;
  }
}


.c-skip {
  position: absolute;
  top: var(--space-2);
  left: var(--space-2);
  z-index: 20;
  padding: var(--space-2) var(--space-4);
  background: var(--bg-surface);
  color: var(--accent);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-control);
  transform: translateY(-200%);
}

.c-skip:focus {
  transform: none;
}


.c-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: var(--ctl-h);
  padding: 0 var(--space-4);
  border: 1px solid transparent;
  border-radius: var(--radius-control);
  font: inherit;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--dur);
}

.c-button--primary {
  background: var(--accent);
  color: var(--on-accent);
}

.c-button--secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-strong);
}

.c-button--secondary:hover {
  background: var(--bg-elevated);
}

.c-icon {
  flex: none;
}


.c-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--bg-elevated);
  border-bottom: 1px solid var(--border-subtle);
}

.c-header__bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--header-h);
}

.c-header a:not(.c-button) {
  color: var(--text-primary);
}

.c-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--ctl-h);
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
}

.c-header__menu {
  margin-left: auto;
  padding-inline: var(--space-3);
}

.c-header__menu[aria-expanded="true"] {
  background: var(--bg-surface);
}

.c-nav__list,
.c-lang,
.c-footer__list,
.c-cards,
.c-choice__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.c-nav__link {
  display: flex;
  align-items: center;
  min-height: var(--ctl-h);
  padding-inline: var(--space-3);
  text-decoration: none;
  border-radius: var(--radius-control);
}

.c-nav__link:hover {
  text-decoration: underline;
}

.c-nav__link[aria-current] {
  text-decoration: underline;
  text-decoration-thickness: 2px;
  font-weight: 600;
}

.c-lang {
  display: flex;
}

.c-lang__item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--ctl-h);
  min-height: var(--ctl-h);
  font-weight: 600;
  text-decoration: none;
}

a.c-lang__item:hover {
  text-decoration: underline;
}

.c-lang__item[aria-current] {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 0.15em;
}

.c-header__here {
  display: inline-flex;
  align-items: center;
  min-height: var(--ctl-h);
  padding-inline: var(--space-2);
  font-weight: 600;
  white-space: nowrap;
}

@media (max-width: 879.98px) {
  .c-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    padding: var(--space-2) var(--space-4) var(--space-4);
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border-subtle);
    box-shadow: var(--shadow-pop);
  }

  .c-nav.is-open {
    display: block;
  }

  .no-js .c-header__menu {
    display: none;
  }

  .no-js .c-header__bar {
    flex-wrap: wrap;
  }

  .no-js .c-nav {
    display: block;
    position: static;
    order: 10;
    width: 100%;
    padding: 0;
    box-shadow: none;
    border: 0;
  }

  .no-js .c-lang {
    margin-left: auto;
  }
}

@media (max-width: 419.98px) {
  .c-header__name {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
  }
}

@media (min-width: 880px) {
  .c-header__menu {
    display: none;
  }

  .c-nav {
    margin-left: var(--space-4);
  }

  .c-nav__list {
    display: flex;
    gap: var(--space-1);
  }

  .c-lang {
    margin-left: auto;
  }
}


.c-section {
  padding-block: var(--space-12);
}

@media (min-width: 880px) {
  .c-section {
    padding-block: var(--space-16);
  }
}

.c-prose {
  max-width: var(--prose-max);
}

.c-prose section {
  margin-top: var(--space-8);
}


.c-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: stretch;
}

@media (min-width: 640px) {
  .c-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .c-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.c-feature {
  padding: var(--space-6);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
}

.c-feature__title {
  margin: 0;
  font-size: var(--text-lg);
}

@media (min-width: 880px) {
  .c-cards--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1120px) {
  .c-cards--4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.c-feature__icon {
  display: block;
  margin-bottom: var(--space-3);
  color: var(--accent);
}

.c-feature__text {
  margin: var(--space-2) 0 0;
  color: var(--text-secondary);
}

.c-section__more {
  margin: var(--space-6) 0 0;
}


.c-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-8);
  align-items: center;
}

@media (min-width: 880px) {
  .c-hero {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
  }
}

.c-hero__subtitle {
  margin: 0;
  font-size: var(--text-lg);
  color: var(--text-secondary);
}

.c-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-6);
}

.c-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin: var(--space-6) 0 0;
  padding: 0;
  list-style: none;
}

.c-badges__item {
  padding: var(--space-1) var(--space-3);
  border: 1px solid var(--border-subtle);
  border-radius: 999px;
  font-size: var(--text-sm);
  color: var(--text-muted);
  white-space: nowrap;
}


.c-shot {
  margin: var(--space-6) 0 0;
}

.c-hero .c-shot,
.c-showcase .c-shot {
  margin-block: 0;
}

.c-shot__img {
  display: block;
  width: 100%;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
}

.c-shot--portrait {
  max-width: 280px;
  margin-inline: auto;
}

.c-shot__frame {
  position: relative;
  background: var(--bg-elevated);
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-card);
}

.c-shot__ratio {
  display: block;
  width: 100%;
  height: auto;
}

.c-shot__pending {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  text-align: center;
  font-weight: 600;
  color: var(--text-secondary);
}

.c-shot__caption {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--text-secondary);
}


.c-showcase {
  display: grid;
  gap: var(--space-12);
}

.c-showcase__item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
  align-items: center;
}

@media (min-width: 880px) {
  .c-showcase__item {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: var(--space-8);
  }

  .c-showcase__item--reverse {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .c-showcase__item--reverse .c-showcase__text {
    order: 2;
  }
}

.c-points {
  display: grid;
  gap: var(--space-2);
  margin: 0;
  padding-left: var(--space-6);
  color: var(--text-secondary);
}


.c-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  align-items: stretch;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: step;
}

@media (min-width: 880px) {
  .c-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .c-steps--stack {
    grid-template-columns: minmax(0, 1fr);
  }
}

.c-steps__item {
  padding: var(--space-6);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
  counter-increment: step;
}

.c-steps__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  margin-bottom: var(--space-3);
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  font-weight: 700;
}

.c-steps__num::before {
  content: counter(step);
}

.c-steps__title {
  margin: 0;
  font-size: var(--text-lg);
}

.c-steps__text {
  margin: var(--space-2) 0 0;
  color: var(--text-secondary);
}


.c-spec-table {
  width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  border-top: 1px solid var(--border-subtle);
}

.c-spec-table th,
.c-spec-table td {
  padding: var(--space-3) var(--space-4) var(--space-3) 0;
  text-align: left;
  vertical-align: top;
  overflow-wrap: anywhere;
  border-bottom: 1px solid var(--border-subtle);
}

.c-spec-table th {
  width: 35%;
  font-weight: 600;
}


.c-callout {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
}

.c-callout--warning {
  border-left: 4px solid var(--warning);
}

.c-callout--warning .c-callout__icon {
  color: var(--warning);
}

.c-callout__icon {
  flex: none;
}

.c-callout__body {
  min-width: 0;
}

.c-callout__body {
  display: grid;
  gap: var(--space-3);
}

.c-callout__body p {
  margin: 0;
}

.c-callout__title {
  margin: 0;
}

.c-prose .c-callout {
  margin-top: var(--space-6);
}


.c-faq {
  border-top: 1px solid var(--border-subtle);
}

.c-faq__item {
  border-bottom: 1px solid var(--border-subtle);
}

.c-faq__q {
  min-height: var(--ctl-h);
  padding-block: 10px;
  line-height: 1.5;
  font-weight: 600;
  cursor: pointer;
}

.c-faq__a {
  margin: 0;
  padding-bottom: var(--space-4);
  color: var(--text-secondary);
}


.c-band {
  padding: var(--space-8) var(--space-6);
  text-align: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-card);
}

.c-band p {
  margin: 0 0 var(--space-6);
  color: var(--text-secondary);
}


.c-howto {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  padding-left: var(--space-6);
}

.c-howto p {
  margin: 0;
}

.c-code {
  margin: var(--space-2) 0 0;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-control);
  font-size: var(--text-sm);
}


.c-news {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.c-news__index {
  display: none;
}

.c-news__index-title {
  margin: 0 0 var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
}

.c-news__index-list,
.c-news__jump-list,
.c-release-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.c-news__index-list a,
.c-news__jump-list a {
  display: flex;
  align-items: center;
  min-height: var(--ctl-h);
}

.c-news__jump {
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-control);
}

.c-news__jump-summary {
  min-height: var(--ctl-h);
  padding: 10px var(--space-4);
  line-height: 1.5;
  font-weight: 600;
  cursor: pointer;
}

.c-news__jump-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(6rem, 1fr));
  gap: 0 var(--space-4);
  padding: 0 var(--space-4) var(--space-2);
}

.c-release-list {
  display: grid;
  gap: var(--space-8);
}

.c-news__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-6);
}

.c-release {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-subtle);
  scroll-margin-top: var(--header-h);
}

.c-release__head {
  display: grid;
  gap: var(--space-1);
  align-content: start;
}

.c-release__version {
  margin: 0;
  font-size: var(--text-lg);
}

.c-release__date {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.c-release__body {
  display: grid;
  gap: var(--space-4);
  max-width: var(--prose-max);
}

.c-release__body h3 {
  margin: 0;
  font-size: var(--text-md);
}

.c-release__body p,
.c-release__body ul {
  margin: 0;
}

.c-release__body ul {
  list-style: disc;
  display: grid;
  gap: var(--space-2);
  padding-left: var(--space-6);
}

.c-release__body code {
  padding: 0 0.25em;
  font-size: 0.9em;
  background: var(--bg-surface);
  color: var(--text-primary);
  border-radius: 4px;
  overflow-wrap: anywhere;
}

@media (min-width: 880px) {
  .c-release {
    grid-template-columns: 160px minmax(0, 1fr);
    gap: var(--space-6);
  }
}

@media (min-width: 1120px) {
  .c-news {
    grid-template-columns: 10rem minmax(0, 1fr);
  }

  .c-news__index {
    display: block;
    position: sticky;
    top: calc(var(--header-h) + var(--space-6));
    align-self: start;
    max-height: calc(100vh - var(--header-h) - var(--space-12));
    overflow-y: auto;
    scrollbar-color: var(--border-strong) var(--bg-app);
  }

  .c-news__index-list a {
    min-height: 2rem;
  }

  .c-news__jump {
    display: none;
  }
}


.c-footer {
  margin-top: var(--space-12);
  border-top: 1px solid var(--border-subtle);
}

.c-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  padding-block: var(--space-12);
}

@media (min-width: 640px) {
  .c-footer__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .c-footer__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.c-footer__title {
  margin: 0 0 var(--space-2);
  padding: 0;
  font-size: var(--text-md);
  font-weight: 600;
}

.c-footer__list a {
  display: inline-flex;
  align-items: center;
  min-height: var(--ctl-h);
}

.c-footer .c-lang {
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.c-footer .c-lang__item {
  justify-content: flex-start;
}

.c-theme {
  margin: 0;
  padding: 0;
  border: 0;
  min-width: 0;
}

.c-theme__option {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--ctl-h);
  cursor: pointer;
}

.c-theme__option input {
  width: 20px;
  height: 20px;
  margin: 0;
  accent-color: var(--accent);
}


.c-choice {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  gap: var(--space-4);
  text-align: center;
}

.c-choice h1 {
  margin: 0;
}

.c-choice__hint {
  margin: 0;
  color: var(--text-muted);
}

.c-choice__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
}

.c-choice__link {
  min-width: 10rem;
  font-size: var(--text-lg);
}

.c-choice__cols {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}

.c-choice__cols .c-button {
  width: 100%;
}

@media (min-width: 640px) {
  .c-choice__cols {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}