/* ipe() sub pages (journal · about · contact · privacy) — "Quiet Systems": white sheet, thin cobalt lines, Inter + JetBrains Mono. Same tokens as the home page. */
@font-face{font-family:"Inter";font-style:normal;font-weight:400;font-display:swap;src:url("/fonts/inter-400.woff2?v=23") format("woff2");}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-weight:400;font-display:swap;src:url("/fonts/jbmono-400.woff2?v=23") format("woff2");}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-weight:600;font-display:swap;src:url("/fonts/jbmono-600.woff2?v=23") format("woff2");}

:root{color-scheme:light;
  --paper:#fbfcfe;--sheet:#ffffff;--tint:#f4f7fd;
  --ink:#0f1829;--text:#2c3547;--muted:#566074;
  --cobalt:#1f4fd1;--cobalt-bright:#2f6bf0;
  --line:rgba(31,79,209,.28);--line-soft:rgba(31,79,209,.14);--hair:rgba(15,24,41,.10);
  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Apple SD Gothic Neo","Pretendard","Hiragino Sans","Noto Sans","Segoe UI",Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --gut:32px;--tap:44px;}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--text);font:400 16px/1.7 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%}
.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}
:focus-visible{outline:2px solid var(--cobalt);outline-offset:3px}
::selection{background:#cfdcfb;color:var(--ink)}
.skip{position:absolute;inset-inline-start:16px;top:-80px;z-index:50;background:var(--ink);color:#fff;padding:12px 16px;font:13px var(--mono)}
.skip:focus{top:12px}
.ltr{direction:ltr;unicode-bidi:isolate}

/* topbar */
.topbar{min-height:84px;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:0 var(--gut);border-bottom:1px solid var(--line);background:var(--sheet)}
.logo{display:inline-flex;align-items:center;min-height:var(--tap);font:400 32px/1 var(--sans);letter-spacing:-.045em;color:var(--ink)}
.top-right{display:flex;align-items:center;gap:20px}
.top-right nav{display:flex;gap:2px;font:600 12px/1.2 var(--mono);text-transform:uppercase;letter-spacing:.08em}
.top-right nav a{display:inline-flex;align-items:center;min-height:var(--tap);padding:0 10px;color:var(--ink);border-bottom:1px solid transparent}
.top-right nav a:hover{color:var(--cobalt)}
.top-right nav a[aria-current="page"]{color:var(--cobalt);border-bottom-color:var(--cobalt)}
.language{display:inline-flex;align-items:center;gap:6px;min-height:var(--tap);padding:0 12px;border:1px solid var(--line);color:var(--cobalt);font:600 12px var(--mono);cursor:pointer}
.language:hover{border-color:var(--cobalt)}
.language:focus-within{border-color:var(--cobalt);outline:2px solid var(--cobalt);outline-offset:3px}
.language svg{width:14px;height:14px;flex:none}
.language select{appearance:none;-webkit-appearance:none;border:0;background:transparent;color:var(--cobalt);outline:0;cursor:pointer;min-height:var(--tap);padding:0 2px;letter-spacing:.06em;font:inherit;border-radius:0}
.sr-only{position:absolute;width:1px;height:1px;margin:-1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.langswitch:not(.language){display:inline-flex;border:1px solid var(--line);overflow:hidden;font:600 12px var(--mono)}
.langswitch button{appearance:none;border:0;background:transparent;color:var(--muted);font:inherit;min-height:var(--tap);min-width:var(--tap);padding:0 12px;cursor:pointer}
.langswitch button[aria-pressed="true"]{background:var(--cobalt);color:#fff}

/* language blocks: EN default, KO shown when <html lang="ko"> */
html:not([lang="ko"]) [lang="ko"]:not(.lg){display:none}
html[lang="ko"] [lang="en"]:not(.lg){display:none}

/* shared bits */
.eyebrow{margin:0 0 24px;display:flex;align-items:center;gap:11px;color:var(--cobalt);font:600 12px/1.3 var(--mono);letter-spacing:.1em;text-transform:uppercase}
.eyebrow i{display:block;width:28px;height:1px;background:currentColor;flex:none}
.wrap{max-width:792px;margin:0 auto;padding:88px var(--gut) 104px}

/* index */
.page-title{margin:0 0 20px;color:var(--ink);font:400 clamp(38px,6.4vw,64px)/1.05 var(--sans);letter-spacing:-.05em;overflow-wrap:anywhere}
.page-title em{color:var(--cobalt);font-style:normal}
.lede{margin:0 0 56px;color:var(--text);font:400 17px/1.75 var(--sans);max-width:36em}
.post-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.post-card{display:block;padding:32px 0;border-bottom:1px solid var(--line);transition:transform .25s}
.post-card:hover,.post-card:focus-visible{transform:translateX(6px)}
.post-meta{margin:0 0 12px;color:var(--muted);font:12px/1.5 var(--mono);text-transform:uppercase;letter-spacing:.08em}
.post-card h2{margin:0 0 12px;color:var(--ink);font:400 clamp(24px,3.2vw,32px)/1.2 var(--sans);letter-spacing:-.035em}
.post-card p.excerpt{margin:0 0 16px;color:var(--text);font:15px/1.75 var(--sans)}
.more{color:var(--cobalt);font:600 12px var(--mono);text-transform:uppercase;letter-spacing:.06em}

/* article / prose */
.post-head{margin-bottom:48px}
.post-head h1{margin:0 0 20px;color:var(--ink);font:400 clamp(32px,5.4vw,52px)/1.1 var(--sans);letter-spacing:-.045em;overflow-wrap:anywhere}
.post-head h1 em{color:var(--cobalt);font-style:normal}
.prose p{margin:0 0 26px;color:var(--text);font:400 17px/1.85 var(--sans);overflow-wrap:anywhere}
.prose p.lead{color:var(--ink);font:400 clamp(20px,2.4vw,24px)/1.55 var(--sans);letter-spacing:-.015em}
.prose strong{font-weight:600;color:var(--ink)}
.prose code,.code-line{font-family:var(--mono);font-size:.9em;color:var(--cobalt)}
.prose blockquote{margin:44px 0;padding:0 0 0 22px;padding-inline-start:22px;border-inline-start:1px solid var(--cobalt);font:400 22px/1.4 var(--mono);color:var(--cobalt)}
.prose h2{margin:48px 0 14px;color:var(--ink);font:400 clamp(22px,2.8vw,28px)/1.25 var(--sans);letter-spacing:-.03em}
.prose h3{margin:28px 0 8px;color:var(--ink);font:600 14px/1.5 var(--mono);letter-spacing:.04em;text-transform:uppercase}
.prose ul{margin:0 0 26px;padding-inline-start:1.3em;font-size:17px;line-height:1.8}
.prose li{margin:0 0 8px;overflow-wrap:anywhere}
.prose a:not(.btn){color:var(--cobalt);text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:3px}
.prose a:not(.btn):hover{text-decoration-color:var(--cobalt)}
.prose .mail{font:600 clamp(17px,3.4vw,22px)/1.4 var(--mono);word-break:break-all}
.back{display:inline-flex;align-items:center;min-height:var(--tap);margin-top:32px;color:var(--cobalt);font:600 12px var(--mono);letter-spacing:.06em;text-transform:uppercase}
.back:hover{text-decoration:underline;text-underline-offset:4px}

/* facts sheet (about / contact / privacy summary) */
.facts{margin:0 0 40px;padding:0;display:grid;grid-template-columns:minmax(0,1fr);border-top:1px solid var(--line)}
.facts div{display:grid;grid-template-columns:minmax(0,9.5rem) minmax(0,1fr);gap:4px 24px;padding:14px 0;border-bottom:1px solid var(--hair)}
.facts dt{color:var(--muted);font:12px/1.7 var(--mono);letter-spacing:.1em;text-transform:uppercase}
.facts dd{margin:0;color:var(--ink);font:400 16px/1.7 var(--sans);overflow-wrap:anywhere}
.stamp{margin:0 0 32px;color:var(--muted);font:12px/1.6 var(--mono);letter-spacing:.06em}

/* footer */
footer{background:var(--sheet);border-top:1px solid var(--line);padding:48px var(--gut) 24px}
footer .sig{margin:0 0 28px;color:var(--ink);font:400 clamp(30px,5vw,48px)/1 var(--sans);letter-spacing:-.05em}
footer .sig span{color:var(--cobalt)}
footer .foot{display:flex;justify-content:space-between;align-items:center;gap:6px 24px;flex-wrap:wrap;padding-top:14px;border-top:1px solid var(--hair);font:12px/1.6 var(--mono);letter-spacing:.04em;color:var(--muted)}
footer .foot p{margin:0}
footer .foot nav{display:flex;flex-wrap:wrap;gap:0 4px}
footer .foot a{display:inline-flex;align-items:center;min-height:var(--tap);padding:0 8px;color:var(--ink)}
footer .foot a:hover{color:var(--cobalt)}

@media(max-width:720px){
  :root{--gut:16px}
  .topbar{min-height:68px}
  .logo{font-size:28px}
  .top-right{gap:8px}
  .top-right nav a{padding:0 6px;font-size:11px;letter-spacing:.04em}
  .language{padding:0 8px}
  .wrap{padding-block:56px 72px}
  .prose p,.prose ul{font-size:16px}
  .facts div{grid-template-columns:minmax(0,1fr);gap:0}
}
@media(max-width:420px){
  .top-right nav .opt{display:none}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*:before,*:after{transition-duration:.01ms!important;animation-duration:.01ms!important}}
.facts a{color:var(--cobalt);text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:3px}

/* translations (/journal/<lang>/…): AI-translation note, language list, per-script font fallbacks, RTL */
.ai-note{margin:0 0 36px;padding:12px 16px;border:1px solid var(--line-soft);border-inline-start:2px solid var(--cobalt);background:var(--tint);color:var(--text);font:400 14px/1.7 var(--sans);overflow-wrap:anywhere}
.ai-note strong{color:var(--ink);font-weight:600;margin-inline-end:4px}
.ai-note a{color:var(--cobalt);text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:3px}
html[lang="ja"]{--sans:"Inter",-apple-system,BlinkMacSystemFont,"Hiragino Sans","Hiragino Kaku Gothic ProN","Yu Gothic","Meiryo","Noto Sans JP","Noto Sans","Segoe UI",sans-serif}
html[lang="zh"]{--sans:"Inter",-apple-system,BlinkMacSystemFont,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC","Noto Sans","Segoe UI",sans-serif}
html[lang="hi"]{--sans:"Inter",-apple-system,BlinkMacSystemFont,"Kohinoor Devanagari","Devanagari Sangam MN","Noto Sans Devanagari","Mangal","Nirmala UI","Segoe UI",sans-serif}
html[lang="ar"]{--sans:"Inter",-apple-system,BlinkMacSystemFont,"Geeza Pro","Noto Naskh Arabic","Noto Sans Arabic","Segoe UI","Tahoma",Arial,sans-serif}
html[lang="ja"] body,html[lang="zh"] body{line-height:1.8}
html[lang="ja"] .page-title,html[lang="ja"] .post-head h1,html[lang="zh"] .page-title,html[lang="zh"] .post-head h1,html[lang="hi"] .page-title,html[lang="hi"] .post-head h1,html[lang="ar"] .page-title,html[lang="ar"] .post-head h1{letter-spacing:0;line-height:1.25}
html[lang="ar"] .eyebrow,html[lang="ar"] .post-meta,html[lang="ar"] .more,html[lang="ar"] .back{letter-spacing:0}
html[dir="rtl"] .post-card:hover,html[dir="rtl"] .post-card:focus-visible{transform:translateX(-6px)}
html[dir="rtl"] .ai-note strong{margin-inline-end:4px}

/* x-default language chooser */
.choose-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.choose-list a{display:flex;flex-wrap:wrap;align-items:baseline;justify-content:space-between;gap:4px 24px;min-height:var(--tap);padding:16px 0;border-bottom:1px solid var(--line);transition:transform .25s}
.choose-list a:hover,.choose-list a:focus-visible{transform:translateX(6px)}
.choose-list .lg-name{color:var(--cobalt);font:600 12px/1.5 var(--mono);letter-spacing:.08em;text-transform:uppercase}
.choose-list .lg-title{color:var(--ink);font:400 17px/1.5 var(--sans);overflow-wrap:anywhere}