:root {
  --color-page: #F5F5F1;
  --color-panel: #FFFFFF;
  --color-slot: #ECEBE4;
  --color-border: #DEDCD3;
  --color-border-soft: #EAE8E0;
  --color-accent: #F2653A;
  --color-accent-deep: #C94A22;
  --color-ink: #12333F;
  --color-muted: #5B6E78;
  --color-sand: #E9DCC6;
  --color-success: #2F8F5B;
  --color-warning: #D98A1F;
  --color-error: #C8381F;
  --color-flag-red: #D8302B;
  --color-flag-blue: #22418F;
  --color-flag-white: #FFFFFF;
  --color-transparent: transparent;
  --rgb-panel: 255, 255, 255;
  --rgb-ink: 18, 51, 63;
  --rgb-accent: 242, 101, 58;
  --rgb-success: 47, 143, 91;
  --font-display: "Inter", "Noto Sans SC", "Noto Sans JP", "Noto Sans KR", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Inter", "Noto Sans SC", "Noto Sans JP", "Noto Sans KR", "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --radius-plate: 28px;
  --radius-card: 20px;
  --radius-window: 16px;
  --radius-control: 10px;
  --radius-pill: 999px;
  --shadow-panel: 0 1px 0 rgba(var(--rgb-panel), .9) inset, 0 14px 34px -12px rgba(var(--rgb-accent), .16), 0 2px 6px rgba(var(--rgb-ink), .05);
  --shadow-window: inset 0 0 0 1px rgba(var(--rgb-panel), .85), 0 14px 30px -10px rgba(var(--rgb-ink), .28), 0 34px 70px -20px rgba(var(--rgb-accent), .22);
  --shadow-plate: 26px 34px 70px -18px rgba(var(--rgb-accent), .18);
  --shadow-focus: 0 0 0 4px rgba(var(--rgb-accent), .18);
  --container: 1240px;
  --measure: 760px;
  --gutter: 24px;
  --header-height: 76px;
  --section-space: 88px;
  --transition-fast: 150ms ease;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  color-scheme: light;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 16px);
}
html.nav-open {
  overflow: hidden;
}
body {
  min-width: 0;
  min-height: 100vh;
  margin: 0;
  overflow-x: clip;
  background: var(--color-page);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
body,
button,
input,
select,
textarea {
  font-family: var(--font-body);
}
img,
svg,
video,
canvas {
  display: block;
  max-width: 100%;
}
img {
  height: auto;
}
button,
input,
select,
textarea {
  font: inherit;
}
button,
summary,
select {
  cursor: pointer;
}
a {
  color: inherit;
  text-decoration: none;
}
p,
h1,
h2,
h3,
h4,
ul,
ol,
figure,
blockquote {
  margin-top: 0;
}
ul,
ol {
  padding-left: 1.35em;
}
h1,
h2,
h3,
h4 {
  color: var(--color-ink);
  font-family: var(--font-display);
  text-wrap: balance;
}
h1 {
  margin-bottom: 20px;
  font-size: clamp(52px, 5vw, 68px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.1;
}
h2 {
  margin-bottom: 18px;
  font-size: clamp(34px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.16;
}
h3 {
  margin-bottom: 12px;
  font-size: clamp(21px, 2.4vw, 27px);
  font-weight: 750;
  line-height: 1.25;
}
code,
kbd,
samp,
pre,
.mono {
  font-family: var(--font-mono);
}
code {
  overflow-wrap: anywhere;
}
pre {
  max-width: 100%;
  overflow-x: auto;
  padding: 20px;
  border-radius: var(--radius-window);
  background: var(--color-ink);
  color: var(--color-panel);
  -webkit-overflow-scrolling: touch;
}
strong {
  font-weight: 750;
}
::selection {
  background: rgba(var(--rgb-accent), .22);
  color: var(--color-ink);
}
:where(a, button, summary, input, select, textarea, [role="tab"]):focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}
.wrap,
.container {
  width: 100%;
  max-width: calc(var(--container) + (var(--gutter) * 2));
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.measure {
  width: 100%;
  max-width: calc(var(--measure) + (var(--gutter) * 2));
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.section {
  padding-top: var(--section-space);
  padding-bottom: var(--section-space);
}
.section-tight {
  padding-top: calc(var(--section-space) / 2);
  padding-bottom: calc(var(--section-space) / 2);
}
.section-head {
  max-width: 760px;
  margin-bottom: 40px;
}
.eyebrow,
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--color-muted);
  font-size: 13px;
  font-weight: 750;
  letter-spacing: .06em;
}
.eyebrow::before,
.kicker::before {
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 4px rgba(var(--rgb-accent), .18);
  content: "";
}
.hi,
.text-accent {
  color: var(--color-accent);
}
.muted {
  color: var(--color-muted);
}
.no-break {
  white-space: nowrap;
}
.badge,
.tag-label {
  display: inline-flex;
  min-height: 28px;
  max-width: 100%;
  align-items: center;
  gap: 7px;
  overflow: hidden;
  padding: 3px 11px;
  border-radius: var(--radius-pill);
  background: var(--color-slot);
  color: var(--color-ink);
  font-size: 12px;
  font-weight: 700;
}
.badge-accent {
  background: rgba(var(--rgb-accent), .12);
  color: var(--color-accent-deep);
}
.badge-success {
  background: rgba(var(--rgb-success), .12);
  color: var(--color-success);
}
.panel,
.card {
  min-width: 0;
  border: 1px solid var(--color-border-soft);
  border-radius: var(--radius-card);
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}
.btn {
  display: inline-flex;
  min-width: 24px;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  gap: 9px;
  padding: 11px 26px;
  border: 0;
  border-radius: var(--radius-pill);
  font-size: 15px;
  font-weight: 750;
  line-height: 1.2;
  text-align: center;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}
.btn:hover {
  transform: translateY(-1px);
}
.btn-primary {
  background: linear-gradient(180deg, var(--color-accent) 0%, var(--color-accent) 58%, var(--color-accent-deep) 100%);
  box-shadow: 0 12px 26px -8px rgba(var(--rgb-accent), .55), inset 0 1px 0 rgba(var(--rgb-panel), .35);
  color: var(--color-panel);
}
.btn-primary:hover {
  box-shadow: 0 16px 30px -8px rgba(var(--rgb-accent), .6), inset 0 1px 0 rgba(var(--rgb-panel), .35);
}
.btn-secondary {
  border: 2px solid var(--color-ink);
  background: var(--color-transparent);
  color: var(--color-ink);
}
.btn-secondary:hover {
  background: rgba(var(--rgb-ink), .06);
}
.btn-dark {
  background: var(--color-ink);
  color: var(--color-panel);
}
.btn-dark:hover {
  background: var(--color-accent-deep);
}
.btn-small {
  min-height: 40px;
  padding: 8px 18px;
  font-size: 14px;
}
.btn[aria-disabled="true"],
.btn:disabled {
  cursor: not-allowed;
  opacity: .55;
  transform: none;
}
.site-header {
  position: relative;
  z-index: 50;
}
.site-nav {
  display: flex;
  min-height: var(--header-height);
  align-items: center;
  gap: 24px;
}
.site-brand {
  display: inline-flex;
  min-width: max-content;
  align-items: center;
  gap: 11px;
}
.site-brand img {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  box-shadow: 0 6px 14px -6px rgba(var(--rgb-accent), .55);
}
.site-brand-name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -.02em;
}
.site-brand-local {
  color: var(--color-muted);
  font-weight: 600;
}
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-left: auto;
}
.desktop-nav a {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  color: var(--color-muted);
  font-size: 14px;
  font-weight: 650;
}
.desktop-nav a:hover,
.desktop-nav a[aria-current="page"] {
  color: var(--color-ink);
}
.desktop-nav a[aria-current="page"] {
  font-weight: 800;
}
.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
}
.header-login {
  display: inline-flex;
  min-height: 40px;
  align-items: center;
  justify-content: center;
  padding: 8px 20px;
  border-radius: var(--radius-pill);
  background: var(--color-ink);
  color: var(--color-panel);
  font-size: 14px;
  font-weight: 750;
}
.header-login:hover {
  background: var(--color-accent-deep);
}
.lang-picker {
  position: relative;
}
.lang-button,
.menu-button {
  display: inline-flex;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  gap: 6px;
  border: 0;
  background: var(--color-transparent);
  color: var(--color-muted);
  font-weight: 700;
}
.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 170px;
  padding: 8px;
  border: 1px solid var(--color-border);
  border-radius: 14px;
  background: var(--color-panel);
  box-shadow: var(--shadow-panel);
}
.lang-menu[hidden] {
  display: none;
}
.lang-menu a {
  display: flex;
  min-height: 42px;
  align-items: center;
  padding: 8px 10px;
  border-radius: 9px;
  color: var(--color-muted);
}
.lang-menu a:hover,
.lang-menu a[aria-current="true"] {
  background: var(--color-slot);
  color: var(--color-ink);
}
.menu-button {
  display: none;
}
.menu-button-lines,
.menu-button-lines::before,
.menu-button-lines::after {
  width: 21px;
  height: 2px;
  border-radius: var(--radius-pill);
  background: var(--color-ink);
}
.menu-button-lines {
  position: relative;
}
.menu-button-lines::before,
.menu-button-lines::after {
  position: absolute;
  left: 0;
  content: "";
}
.menu-button-lines::before {
  top: -6px;
}
.menu-button-lines::after {
  top: 6px;
}
.mobile-nav {
  display: none;
}
.mobile-nav[hidden] {
  display: none;
}
.nav-veil {
  display: none;
}
.site-footer {
  margin-top: var(--section-space);
  overflow-x: clip;
  background: var(--color-ink);
  color: var(--color-panel);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1.4fr .8fr;
  gap: 42px;
  padding-top: 64px;
  padding-bottom: 48px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-brand img {
  width: 38px;
  height: 38px;
}
.footer-brand strong {
  font-family: var(--font-display);
  font-size: 21px;
}
.footer-intro {
  max-width: 32em;
  margin-top: 18px;
  color: rgba(var(--rgb-panel), .72);
}
.footer-title {
  margin-bottom: 14px;
  color: var(--color-panel);
  font-size: 14px;
  letter-spacing: .08em;
}
.footer-links {
  display: grid;
  gap: 8px;
  padding: 0;
  list-style: none;
}
.footer-links a {
  display: inline-flex;
  min-height: 28px;
  align-items: center;
  color: rgba(var(--rgb-panel), .72);
}
.footer-links a:hover {
  color: var(--color-panel);
}
.footer-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.footer-keywords a {
  display: inline-flex;
  min-height: 30px;
  align-items: center;
  padding: 4px 10px;
  border: 1px solid rgba(var(--rgb-panel), .18);
  border-radius: var(--radius-pill);
  color: rgba(var(--rgb-panel), .78);
  font-size: 12px;
}
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 22px;
  padding-bottom: 26px;
  border-top: 1px solid rgba(var(--rgb-panel), .14);
  color: rgba(var(--rgb-panel), .65);
  font-size: 13px;
}
.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}
.reveal {
  transition: opacity .55s ease, transform .55s ease;
}
.reveal.pending {
  opacity: 0;
  transform: translateY(16px);
}
.reveal.shown {
  opacity: 1;
  transform: translateY(0);
}
#server-status {
  position: relative;
  display: block;
  width: 100%;
  max-width: 100%;
  margin-bottom: 28px;
  overflow: hidden;
}
#server-status + * {
  margin-top: 28px;
}
.prose {
  min-width: 0;
  color: var(--color-muted);
}
.prose > * + * {
  margin-top: 1.2em;
}
.prose h2,
.prose h3,
.prose strong {
  color: var(--color-ink);
}
.prose a:not(.btn) {
  color: var(--color-accent-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.prose section[id] {
  scroll-margin-top: calc(var(--header-height) + 84px);
}
@media (max-width: 960px) {
  .desktop-nav {
    display: none;
  }
  .header-tools {
    margin-left: auto;
  }
  .menu-button {
    display: inline-flex;
  }
  .mobile-nav {
    position: absolute;
    z-index: 53;
    top: var(--header-height);
    right: var(--gutter);
    left: var(--gutter);
    display: grid;
    max-height: calc(100dvh - var(--header-height) - 16px);
    gap: 2px;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-card);
    background: var(--color-panel);
    box-shadow: var(--shadow-window);
  }
  .mobile-nav a {
    display: flex;
    width: 100%;
    min-height: 46px;
    align-items: center;
    padding: 10px 12px;
    border-radius: var(--radius-control);
    color: var(--color-muted);
  }
  .mobile-nav a:hover,
  .mobile-nav a[aria-current="page"] {
    background: var(--color-slot);
    color: var(--color-ink);
  }
  .nav-veil {
    position: fixed;
    z-index: 49;
    inset: var(--header-height) 0 0;
    display: block;
    border: 0;
    background: rgba(var(--rgb-ink), .28);
  }
  .nav-veil[hidden] {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 768px) {
  :root {
    --section-space: 64px;
  }
  h1 {
    font-size: clamp(34px, 9.5vw, 40px);
    line-height: 1.12;
  }
  h2 {
    font-size: clamp(28px, 8vw, 36px);
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}
@media (max-width: 640px) {
  :root {
    --gutter: 16px;
    --header-height: 68px;
  }
  .no-break {
    white-space: normal;
  }
  .tilt,
  [data-tilt] {
    transform: none;
  }
  .header-login {
    min-height: 38px;
    padding-inline: 14px;
  }
  .lang-picker {
    display: none;
  }
  .site-brand-name {
    font-size: 18px;
  }
  .site-brand img {
    width: 32px;
    height: 32px;
  }
  .footer-bottom {
    align-items: flex-start;
    flex-direction: column;
  }
  .decor,
  .stripe-halo,
  [aria-hidden="true"].oversize-decor {
    max-width: 100%;
  }
}
@media (max-width: 370px) {
  .site-nav {
    gap: 8px;
  }
  .header-login {
    padding-inline: 11px;
  }
}
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    scroll-duration: 0s;
    transition-duration: .01ms !important;
  }
  .reveal,
  .reveal.pending {
    opacity: 1;
    transform: none;
  }
}