:root {
  --bg: #F6EEE3;
  --bg-top: #FBF6EE;
  --bg-bottom: #F1E7D8;
  --panel: #FFFBF5;
  --panel-2: #EFE6D8;
  --border: #E2D6C4;
  --accent: #6F4FD8;
  --accent-dark: #4B2FA8;
  --peach: #F2A27E;
  --text: #241C17;
  --muted: #6E6158;
  --success: #2F8A57;
  --warn: #C98A1B;
  --error: #C2413A;
  --white: #FFFFFF;
  --flag-red: #D2283A;
  --flag-blue: #24418F;
  --flag-white: #FFFFFF;
  --clear: transparent;
  --ink-soft: color-mix(in srgb, var(--text) 76%, var(--muted));
  --muted-soft: color-mix(in srgb, var(--muted) 78%, var(--bg));
  --line-soft: color-mix(in srgb, var(--border) 85%, transparent);
  --line-faint: color-mix(in srgb, var(--border) 55%, transparent);
  --hi-edge: color-mix(in srgb, var(--white) 80%, transparent);
  --tint-08: color-mix(in srgb, var(--accent) 8%, transparent);
  --tint-10: color-mix(in srgb, var(--accent) 10%, transparent);
  --tint-14: color-mix(in srgb, var(--accent) 14%, transparent);
  --tint-22: color-mix(in srgb, var(--accent) 22%, transparent);
  --peach-wash: color-mix(in srgb, var(--peach) 38%, transparent);
  --veil: color-mix(in srgb, var(--text) 28%, transparent);
  --font-display: "Inter", "Noto Sans SC", "Noto Sans JP", "Noto Sans KR", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Inter", "Noto Sans SC", "Noto Sans JP", "Noto Sans KR", "PingFang SC", "Hiragino Sans", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  --fs-body: 16px;
  --fs-small: 14px;
  --fs-tiny: 13px;
  --fs-nav: 15px;
  --fs-lede: 19px;
  --fs-h1: clamp(52px, 4.5vw, 64px);
  --fs-h2: clamp(28px, 3vw, 40px);
  --fs-h3: 22px;
  --weight-regular: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --r-card: 40px;
  --r-tray: 32px;
  --r-small-card: 28px;
  --r-pill: 999px;
  --r-mark: 10px;
  --r-code: 8px;
  --r-round: 50%;
  --gutter: 32px;
  --shell: 1344px;
  --header-height: 72px;
  --anchor-offset: 88px;
  --toc-offset: 96px;
  --toc-anchor-offset: 176px;
  --space-1: 8px;
  --space-2: 16px;
  --space-3: 24px;
  --space-4: 32px;
  --space-5: 40px;
  --space-6: 48px;
  --space-8: 64px;
  --space-12: 96px;
  --ease: cubic-bezier(.2, .7, .3, 1);
  --time-fast: .2s;
  --time-reveal: .35s;
  --shadow-card: inset 0 1px 0 var(--white), 0 24px 64px -28px var(--tint-14);
  --paper-noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23g)'/%3E%3C/svg%3E");
}
*, *::before, *::after { box-sizing: border-box; }
html { background: var(--bg); scroll-padding-top: var(--anchor-offset); scroll-behavior: smooth; }
body {
  margin: 0;
  min-height: 100vh;
  position: relative;
  overflow-x: clip;
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg) 52%, var(--bg-bottom) 100%);
}
body::before { content: ""; position: fixed; inset: 0; pointer-events: none; z-index: 0; opacity: .03; background-image: var(--paper-noise); background-size: 180px 180px; }
header, main, footer { position: relative; z-index: 1; }
a { color: inherit; text-underline-offset: .2em; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
button, input, select, textarea { border: 1px solid var(--border); }
button { background: var(--panel); }
img { max-width: 100%; height: auto; display: block; }
svg { flex-shrink: 0; }
[hidden] { display: none !important; }
h1, h2, h3 { font-family: var(--font-display); font-weight: var(--weight-regular); text-wrap: balance; overflow-wrap: break-word; }
h1 { font-size: var(--fs-h1); line-height: 1.1; letter-spacing: -.02em; margin: 0 0 var(--space-3); }
h2 { font-size: var(--fs-h2); line-height: 1.2; letter-spacing: -.02em; margin: 0 0 var(--space-3); }
h3 { font-size: var(--fs-h3); line-height: 1.4; margin: 0 0 var(--space-2); }
p { margin: 0; }
ul, ol { padding-left: 1.5em; }
pre { max-width: 100%; overflow-x: auto; padding: var(--space-3); background: var(--panel-2); border-radius: var(--r-code); }
code { font-family: var(--font-mono); overflow-wrap: anywhere; }
pre code { overflow-wrap: normal; }
:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
:where(input, textarea, select) { min-height: 44px; padding: 10px 14px; border-radius: var(--r-code); background: var(--panel); max-width: 100%; }
.shell, .wrap { width: 100%; max-width: var(--shell); margin-inline: auto; padding-inline: var(--gutter); }
.section { padding-top: var(--space-8); padding-bottom: var(--space-8); }
.section-head { margin-bottom: var(--space-4); max-width: 800px; }
.section-head p, .muted { color: var(--muted); }
.grid-two, .grid-three { display: grid; gap: var(--space-3); }
.grid-two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
:where(.grid-two, .grid-three, .hero-copy, .footer-grid) > * { min-width: 0; }
.stack > * + * { margin-top: var(--space-3); }
.no-break { white-space: nowrap; }
.mono { font-family: var(--font-mono); }
.panel, .card { background: var(--panel); border: 1px solid var(--hi-edge); box-shadow: var(--shadow-card); border-radius: var(--r-small-card); padding: var(--space-4); min-width: 0; }
.tray { background: var(--panel-2); border: 1px solid var(--hi-edge); border-radius: var(--r-card); box-shadow: var(--shadow-card); padding: var(--space-4); min-width: 0; }
.decorated { position: relative; overflow-x: clip; }
.prose { max-width: 860px; min-width: 0; line-height: 1.85; overflow-wrap: break-word; }
.prose > * + * { margin-top: var(--space-3); }
.prose h2 { margin-top: var(--space-8); }
.prose h3 { margin-top: var(--space-5); }
.prose li + li { margin-top: var(--space-1); }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; padding: 0 26px; border: 0; border-radius: var(--r-pill);
  font-family: var(--font-body); font-size: var(--fs-body); font-weight: var(--weight-medium);
  letter-spacing: -.005em; text-decoration: none; white-space: nowrap; flex-shrink: 0;
  transition: background-color var(--time-fast) var(--ease), box-shadow var(--time-fast) var(--ease);
}
.btn-primary { background: var(--text); color: var(--panel); box-shadow: inset 0 1px 0 color-mix(in srgb, var(--white) 14%, transparent), 0 10px 24px -12px color-mix(in srgb, var(--text) 45%, transparent); }
.btn-primary:hover { background: color-mix(in srgb, var(--text) 86%, var(--accent-dark)); }
.btn-ghost { background: var(--panel); color: var(--text); box-shadow: inset 0 0 0 1px var(--border), inset 0 1px 0 var(--white); }
.btn-ghost:hover { box-shadow: inset 0 0 0 1px var(--muted), 0 8px 20px -12px var(--tint-22); }
.btn-sm { height: 44px; padding: 0 22px; font-size: var(--fs-nav); }
.btn:active { box-shadow: inset 0 0 0 2px var(--accent); }
.btn:disabled, .btn[aria-disabled="true"] { opacity: .5; cursor: not-allowed; }
.btn-login { height: 40px; padding: 0 22px; font-size: var(--fs-nav); background: var(--panel); color: var(--text); box-shadow: inset 0 0 0 1px var(--border), inset 0 1px 0 var(--white); }
.btn-login:hover { box-shadow: inset 0 0 0 1px var(--muted); }
#site-header, .preview-header { z-index: 50; }
.topbar-in { display: flex; align-items: center; height: var(--header-height); flex-wrap: nowrap; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; flex-shrink: 0; }
.brand-mark { width: 32px; height: 32px; flex-shrink: 0; border-radius: var(--r-mark); }
.brand-word { font-family: var(--font-display); font-size: 20px; font-weight: var(--weight-semibold); letter-spacing: -.02em; color: var(--text); }
.mainnav { display: flex; align-items: center; margin-left: 28px; flex: 1; min-width: 0; }
.mainnav ul { display: flex; align-items: center; list-style: none; margin: 0; padding: 0; gap: 18px; }
.mainnav a { font-size: var(--fs-nav); font-weight: var(--weight-regular); color: var(--ink-soft); text-decoration: none; white-space: nowrap; display: inline-flex; align-items: center; min-height: 32px; }
.mainnav a:hover { color: var(--accent-dark); }
.mainnav a[aria-current="page"] { color: var(--text); font-weight: var(--weight-semibold); }
.nav-more { position: relative; flex-shrink: 0; margin-right: 16px; }
.nav-more summary { cursor: pointer; padding: 10px 8px; font-size: var(--fs-nav); white-space: nowrap; }
.nav-more ul { position: absolute; right: 0; top: 100%; min-width: 220px; padding: 8px; margin: 0; list-style: none; background: var(--panel); border: 1px solid var(--border); border-radius: var(--r-small-card); box-shadow: var(--shadow-card); z-index: 80; }
.nav-more a { display: flex; padding: 12px; text-decoration: none; white-space: nowrap; }
@media (max-width: 1120px) { .nav-more { display: none; } }
.topbar-tools { margin-left: auto; display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.language { position: relative; }
.lang { display: inline-flex; align-items: center; justify-content: center; min-width: 44px; width: auto; height: 40px; padding: 0 12px; border: 0; background: var(--clear); font-family: var(--font-body); font-size: var(--fs-small); color: var(--muted); border-radius: var(--r-pill); white-space: nowrap; }
.lang:hover { color: var(--text); }
.language-panel { position: absolute; right: 0; top: calc(100% + 8px); width: 188px; padding: 8px; background: var(--panel); border: 1px solid var(--border); border-radius: var(--r-small-card); box-shadow: var(--shadow-card); z-index: 80; }
.language-panel a { display: flex; align-items: center; min-height: 44px; padding: 8px 14px; text-decoration: none; border-radius: var(--r-pill); font-size: var(--fs-small); }
.language-panel a:hover, .language-panel a[aria-current="true"] { background: var(--panel-2); color: var(--accent-dark); }
.menu-toggle { display: none; align-items: center; justify-content: center; flex-direction: column; gap: 4px; min-width: 44px; min-height: 44px; padding: 10px; border: 0; border-radius: var(--r-pill); background: var(--clear); }
.menu-line { display: block; width: 20px; height: 2px; background: currentColor; }
.mobile-drawer { position: fixed; top: var(--header-height); inset-inline: 0; height: calc(100dvh - var(--header-height)); max-height: calc(100dvh - var(--header-height)); overflow-y: auto; overscroll-behavior: contain; background: var(--panel); padding: 16px var(--gutter) 32px; z-index: 60; }
.mobile-drawer ul { list-style: none; margin: 0; padding: 0; }
.mobile-drawer a { display: flex; align-items: center; width: 100%; min-height: 48px; padding: 12px 16px; text-decoration: none; border-bottom: 1px solid var(--line-faint); }
.mobile-drawer a[aria-current] { color: var(--accent-dark); font-weight: var(--weight-semibold); }
.drawer-languages { margin-top: 24px; border-top: 1px solid var(--border); }
.menu-veil { position: fixed; top: var(--header-height); bottom: 0; inset-inline: 0; border: 0; background: var(--veil); z-index: 55; }
html.nav-open { overflow: hidden; }
.site-footer { padding-top: var(--space-8); padding-bottom: var(--space-4); border-top: 1px solid var(--line-soft); background: color-mix(in srgb, var(--panel-2) 50%, var(--bg)); }
.footer-grid { display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: var(--space-6); }
.footer-intro p { margin-top: var(--space-3); color: var(--muted); max-width: 340px; font-size: var(--fs-small); line-height: 1.8; }
.footer-heading { font-size: var(--fs-body); font-weight: var(--weight-medium); margin: 0 0 16px; }
.footer-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 16px; list-style: none; padding: 0; margin: 0; }
.footer-links a, .footer-languages a, .footer-legal a { display: inline-flex; align-items: center; min-height: 32px; font-size: var(--fs-small); color: var(--muted); text-decoration: none; }
.footer-links a:hover, .footer-languages a:hover, .footer-legal a:hover { color: var(--accent-dark); text-decoration: underline; }
.footer-languages { display: flex; flex-wrap: wrap; gap: 8px 24px; margin-top: var(--space-5); padding-top: var(--space-3); border-top: 1px solid var(--line-soft); }
.footer-bottom { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; margin-top: 24px; font-size: var(--fs-tiny); color: var(--muted); }
.footer-legal { display: flex; flex-wrap: wrap; gap: 24px; }
.reveal { transition: opacity var(--time-reveal) var(--ease), transform var(--time-reveal) var(--ease); }
.reveal.pending { opacity: 0; transform: translateY(16px); }
.reveal.shown { opacity: 1; transform: none; }
[data-counter] { display: inline-block; min-width: 3ch; font-variant-numeric: tabular-nums; font-family: var(--font-mono); }
#server-status { position: relative; display: block; min-height: 240px; max-width: 100%; overflow: hidden; margin-block: 32px; }
#server-status > * { min-width: 0; max-width: 100%; }
#server-status + * { margin-top: 32px; }
@media (max-width: 1270px) {
  .mainnav { margin-left: 28px; }
  .mainnav ul { gap: 18px; }
}
@media (max-width: 1120px) {
  .mainnav { display: none; }
  .menu-toggle { display: inline-flex; }
  .topbar-tools { margin-left: auto; }
}
@media (min-width: 1121px) {
  .mobile-drawer, .menu-veil { display: none; }
}
@media (max-width: 768px) {
  :root { --gutter: 24px; --fs-h1: clamp(28px, 6vw, 40px); --space-12: 64px; }
  .grid-three, .grid-two { grid-template-columns: minmax(0, 1fr); }
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }
}
@media (max-width: 640px) {
  :root { --gutter: 16px; --fs-h2: 28px; --r-card: 32px; }
  .no-break { white-space: normal; }
  .tilt, [data-tilt] { transform: none; }
  .decorated { max-width: 100%; overflow-x: clip; }
  .section { padding-top: 48px; padding-bottom: 48px; }
  .panel, .card, .tray { padding: 24px; }
  .topbar-in { gap: 8px; }
  .brand { gap: 6px; }
  .brand-mark { width: 26px; height: 26px; }
  .brand-word { font-size: 17px; }
  .topbar-tools { gap: 2px; margin-left: auto; }
  .lang { padding: 0 6px; font-size: 12px; }
  .btn-login { height: 38px; padding: 0 12px; font-size: var(--fs-small); }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0s !important; animation-duration: 0s !important; }
  .reveal, .reveal.pending { opacity: 1; transform: none; }
}