/* ===== Loud minimal · lab index — ink on paper, one accent ===== */
:root {
  --paper: #F4F3EE;
  --ink: #101210;
  --line: #D9D7CE;
  --mut: #55584F;
  --lime: #C6F531;
  --font-d: 'Archivo', 'Arial Black', sans-serif;
  --font-m: 'IBM Plex Mono', 'Courier New', monospace;
}

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

/* NOTE: no overflow-x clip on html/body — it breaks position:sticky (topbar) in Chromium */

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-d);
  font-size: 1rem;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--lime); color: var(--ink); }

a { color: inherit; cursor: pointer; }

:focus-visible { outline: 2px solid var(--ink); outline-offset: 3px; }

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 100;
  background: var(--ink); color: var(--paper);
  padding: 0.5rem 1rem; font-family: var(--font-m); font-size: 0.8125rem;
}
.skip-link:focus { left: 0; top: 0; }

.mono {
  font-family: var(--font-m); font-size: 0.75rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase;
}

.frame {
  max-width: 1240px;
  margin-inline: auto;
  border-inline: 1px solid var(--line);
}
@media (max-width: 1240px) { .frame { border-inline: 0; } }

/* ===== Top bar ===== */
.topbar {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between;
  gap: 0.75rem 2rem;
  padding: 1rem 2rem;
  border-bottom: 1px solid var(--line);
}
.topbar .mono a {
  text-decoration: none; color: var(--mut);
  margin-left: 1.5rem;
  transition: color 120ms ease;
}
.topbar .mono a:hover { color: var(--ink); }
.topbar .mono strong { color: var(--ink); font-weight: 600; }
@media (max-width: 860px) { .topbar .mono a { margin-left: 1rem; } }
@media (max-width: 640px) { .topbar .mono .nav-opt { display: none; } section { scroll-margin-top: 7.5rem; } }

/* ===== Hero ===== */
.hero { padding: 3.5rem 2rem 0; }
.hero-kicker {
  display: flex; justify-content: space-between; gap: 1rem;
  color: var(--mut);
  border-bottom: 1px solid var(--line);
  padding-bottom: 1rem;
}
.hero h1 {
  font-weight: 900;
  font-size: clamp(2.6rem, 11.5vw, 9.5rem);
  line-height: 0.92;
  letter-spacing: -0.035em;
  text-transform: uppercase;
  padding-block: 2.5rem 2rem;
}
.hero h1 .outline {
  color: transparent;
  -webkit-text-stroke: 2.5px var(--ink);
}
.hero h1 .tick { color: var(--ink); }
.hero-low {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 6fr);
  gap: 2rem;
  padding-block: 0 3rem;
  align-items: end;
}
.hero-low .mono { color: var(--mut); line-height: 2; }
.hero-low p {
  font-size: 1.25rem; font-weight: 500; line-height: 1.45;
  max-width: 34rem; justify-self: end;
}
.hero-low p strong { font-weight: 700; }
@media (max-width: 860px) {
  .hero-low { grid-template-columns: 1fr; }
  .hero-low p { justify-self: start; }
}

/* ===== Ticker ===== */
.ticker { border-block: 1px solid var(--ink); overflow: hidden; }
.ticker-track {
  display: flex; width: max-content;
  animation: tick 30s linear infinite;
}
.ticker-group {
  display: flex; align-items: center; gap: 2.25rem;
  padding: 0.625rem 1.125rem 0.625rem 2.25rem;
  font-family: var(--font-m); font-size: 0.8125rem; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase; white-space: nowrap;
}
.ticker-group .star { color: var(--ink); }
.ticker-group em {
  font-style: normal; background: var(--lime); padding: 0.0625rem 0.375rem;
}
@keyframes tick { to { transform: translateX(-50%); } }

/* ===== Sections ===== */
    section { scroll-margin-top: 4.5rem; }
.section { padding: 4.5rem 2rem 5rem; }
.sec-head {
  display: flex; align-items: baseline; gap: 1.5rem;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 1rem;
  margin-bottom: 0;
}
.sec-head .idx { font-family: var(--font-m); font-size: 0.8125rem; font-weight: 600; color: var(--mut); }
.sec-head h2 {
  font-size: clamp(1.875rem, 4.5vw, 3rem);
  font-weight: 900; letter-spacing: -0.02em; text-transform: uppercase;
  line-height: 1;
}
.sec-head .mono { margin-left: auto; color: var(--mut); }
@media (max-width: 640px) { .sec-head .mono { display: none; } }

/* ===== 01 — Tracks (rows, not cards) ===== */
.row {
  display: grid;
  grid-template-columns: 5rem minmax(0, 5fr) minmax(0, 6fr) 2.5rem;
  gap: 1.5rem;
  align-items: baseline;
  padding: 1.75rem 0.75rem;
  border-bottom: 1px solid var(--line);
  transition: background-color 120ms ease;
}
.row:hover { background: var(--lime); }
.row .no { font-family: var(--font-m); font-size: 0.8125rem; color: var(--mut); }
.row:hover .no { color: var(--ink); }
.row h3 {
  font-size: clamp(1.375rem, 2.6vw, 2rem);
  font-weight: 700; letter-spacing: -0.01em; text-transform: uppercase;
  line-height: 1.05;
}
.row p { color: var(--mut); font-size: 1rem; max-width: 36rem; }
.row:hover p { color: var(--ink); }
.row .arr { justify-self: end; align-self: center; opacity: 0; transition: opacity 120ms ease; }
.row:hover .arr { opacity: 1; }
@media (max-width: 860px) {
  .row { grid-template-columns: 3.5rem 1fr; }
  .row p { grid-column: 2; }
  .row .arr { display: none; }
}

/* ===== 02 — Project index (table) ===== */
.tbl-head, .trow {
  display: grid;
  grid-template-columns: 4rem minmax(0, 1fr) 9rem 8rem;
  gap: 1.25rem;
  align-items: center;
}
.tbl-head {
  padding: 0.875rem 0.75rem;
  color: var(--mut);
  border-bottom: 1px solid var(--ink);
}
.trow {
  padding: 1.375rem 0.75rem;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
  transition: background-color 120ms ease;
}
.trow:hover { background: var(--lime); }
.trow .no { font-family: var(--font-m); font-size: 0.8125rem; color: var(--mut); }
.trow:hover .no { color: var(--ink); }
.trow .ttl { font-size: 1.375rem; font-weight: 700; letter-spacing: -0.01em; }
.trow .st {
  font-family: var(--font-m); font-size: 0.75rem; font-weight: 500;
  letter-spacing: 0.08em; text-transform: uppercase; color: var(--mut);
  display: inline-flex; align-items: center; gap: 0.5rem;
}
.trow:hover .st { color: var(--ink); }
.trow .st::before {
  content: ""; width: 0.4375rem; height: 0.4375rem; border-radius: 50%;
  background: var(--ink);
}
.trow .st.queued::before { background: transparent; box-shadow: inset 0 0 0 1.5px var(--mut); }
.trow:hover .st.queued::before { box-shadow: inset 0 0 0 1.5px var(--ink); }
.trow .lnk {
  font-family: var(--font-m); font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; text-align: right;
  display: inline-flex; align-items: center; justify-content: flex-end; gap: 0.4rem;
}
.trow-cta {
  background: var(--ink); color: var(--paper);
  border-bottom: 1px solid var(--ink);
}
.trow-cta .no, .trow-cta .st { color: var(--paper); }
.trow-cta:hover { background: var(--lime); color: var(--ink); }
.trow-cta:hover .no, .trow-cta:hover .st { color: var(--ink); }
.trow-cta:hover .st.queued::before { box-shadow: inset 0 0 0 1.5px var(--ink); }
.trow.is-draft { cursor: default; }
.trow.is-draft:hover { background: transparent; }
.trow.is-draft:hover .no, .trow.is-draft:hover .st { color: var(--mut); }
.trow.is-draft .ttl { color: var(--mut); }
.tbl-note { padding: 1rem 0.75rem 0; color: var(--mut); }
@media (max-width: 760px) {
  .tbl-head { display: none; }
  .trow { grid-template-columns: 3rem 1fr auto; }
  .trow .st { display: none; }
}

/* ===== 03 — Manifesto ===== */
.mani {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: 2rem;
  padding-top: 3rem;
}
.mani .mono { color: var(--mut); }
.mani-state {
  font-size: clamp(1.75rem, 3.8vw, 3rem);
  font-weight: 700; line-height: 1.15; letter-spacing: -0.02em;
  max-width: 56rem;
}
.mani-state mark {
  background: var(--lime); color: var(--ink);
  padding: 0 0.2em;
}
.principles {
  grid-column: 2;
  margin-top: 2.5rem;
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem;
}
.principle { border-top: 1px solid var(--ink); padding-top: 0.875rem; }
.principle .mono { color: var(--ink); display: block; }
.principle h3 {
  font-size: 1.125rem; font-weight: 700; text-transform: uppercase;
  margin-top: 0.375rem; letter-spacing: -0.01em;
}
.principle p { margin-top: 0.375rem; color: var(--mut); font-size: 0.9375rem; }
@media (max-width: 860px) {
  .mani { grid-template-columns: 1fr; }
  .principles { grid-column: 1; grid-template-columns: 1fr; gap: 1.5rem; }
}

/* ===== Say hi ===== */
.sayhi { padding: 5rem 2rem 4rem; }
.sayhi a.big {
  display: inline-block;
  font-size: clamp(3.5rem, 12vw, 9rem);
  font-weight: 900; letter-spacing: -0.035em; line-height: 0.95;
  text-transform: uppercase; text-decoration: none;
  padding: 0 0.1em;
  transition: background-color 120ms ease, color 120ms ease;
}
.sayhi a.big:hover { background: var(--lime); color: var(--ink); }
.sayhi-rows { margin-top: 2.5rem; border-top: 1px solid var(--ink); }
.sayhi-rows a {
  display: flex; justify-content: space-between; align-items: center; gap: 1rem;
  padding: 1.125rem 0.75rem;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-m); font-size: 0.9375rem; font-weight: 500;
  letter-spacing: 0.06em; text-transform: uppercase;
  text-decoration: none;
  transition: background-color 120ms ease;
}
.sayhi-rows a:hover { background: var(--lime); }
.sayhi-rows a span:last-child { color: var(--mut); }
.sayhi-rows a:hover span:last-child { color: var(--ink); }

/* ===== Footer ===== */
footer { border-top: 1px solid var(--ink); }
.foot-row {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.75rem 2rem;
  padding: 1rem 2rem;
  color: var(--mut);
}
.foot-row a { color: var(--mut); text-decoration: none; }
.foot-row a:hover { color: var(--ink); }
.wordmark-clip {
  overflow: hidden; height: clamp(4.5rem, 13.5vw, 12rem);
  padding: 0 0.5rem;
}
.wordmark {
  font-size: clamp(5rem, 14.2vw, 13rem);
  font-weight: 900; letter-spacing: -0.04em; line-height: 0.8;
  text-transform: uppercase; white-space: nowrap;
  transform: translateY(10%);
  color: var(--ink);
}
.wordmark .dot { color: transparent; -webkit-text-stroke: 2px var(--ink); }

/* ===== Who (blog intro) ===== */
.who { padding: 3.5rem 2rem; border-bottom: 1px solid var(--line); }
.who-grid {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: 2rem;
}
.who-grid > .mono { color: var(--mut); }
.who-state {
  font-size: clamp(1.375rem, 2.6vw, 2rem);
  font-weight: 700; line-height: 1.25; letter-spacing: -0.015em;
  max-width: 48rem;
}
.who-state mark { background: var(--lime); color: var(--ink); padding: 0 0.2em; }
.who-links { margin-top: 1.75rem; display: flex; flex-wrap: wrap; gap: 0.5rem; }
.who-links a {
  font-family: var(--font-m); font-size: 0.75rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none;
  border: 1px solid var(--ink); color: var(--ink);
  padding: 0.4375rem 0.875rem; border-radius: 999px;
  transition: background-color 120ms ease;
}
.who-links a:hover { background: var(--lime); }
@media (max-width: 860px) {
  .who-grid { grid-template-columns: 1fr; gap: 1.25rem; }
}

/* ===== Blog / log pages ===== */
.log-hero { padding: 3.5rem 2rem; border-bottom: 1px solid var(--line); }
.log-hero .mono { color: var(--mut); display: flex; justify-content: space-between; gap: 1rem; }
.log-hero h1 {
  font-size: clamp(3rem, 9vw, 7rem);
  font-weight: 900; letter-spacing: -0.035em; line-height: 0.92;
  text-transform: uppercase;
  padding-block: 1.5rem 0.75rem;
}
.log-hero .log-sub {
  font-size: 1.1875rem; font-weight: 500; max-width: 36rem; color: var(--ink);
}
.log-hero .log-sub strong { font-weight: 700; }

.post { padding: 3rem 2rem 4.5rem; }
.post-meta {
  display: flex; flex-wrap: wrap; gap: 0.5rem 2rem;
  color: var(--mut);
  border-bottom: 1px solid var(--ink);
  padding-bottom: 1rem;
}
.post h1 {
  font-size: clamp(2.5rem, 6.5vw, 4.75rem);
  font-weight: 900; letter-spacing: -0.03em; line-height: 0.98;
  text-transform: uppercase;
  padding-block: 2rem 1.75rem;
  max-width: 22ch;
}
.post-body { max-width: 44rem; font-size: 1.0625rem; line-height: 1.75; }
.post-body p { margin-block: 1.25em; }
.post-body p:first-child { margin-top: 0; }
.post-body h2 {
  font-size: 1.375rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: -0.01em; margin-top: 2.25em;
}
.post-body mark { background: var(--lime); color: var(--ink); padding: 0 0.15em; }
.post-body ul { margin: 1.25em 0 1.25em 1.25em; }
.post-body li { margin-block: 0.4em; }
.post-body strong { font-weight: 700; }
.post-body .table-wrap { overflow-x: auto; margin-block: 1.5em; border: 1px solid var(--line); }
.post-body table { width: 100%; min-width: 36rem; border-collapse: collapse; font-size: 0.9rem; line-height: 1.6; }
.post-body th, .post-body td { padding: 0.7em 0.9em; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.post-body thead th { font-family: var(--font-m); font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--mut); border-bottom: 1px solid var(--ink); }
.post-body tbody tr:last-child td { border-bottom: 0; }
.post-body tr.group td { font-family: var(--font-m); font-size: 0.78rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; background: var(--paper); color: var(--ink); }
.post-sign {
  margin-top: 3rem; padding-top: 1rem;
  border-top: 1px solid var(--line); color: var(--mut);
}
.backrow {
  display: flex; justify-content: space-between; gap: 1rem;
  padding: 1.125rem 2rem;
  border-top: 1px solid var(--ink);
}
.backrow a {
  font-family: var(--font-m); font-size: 0.8125rem; font-weight: 600;
  letter-spacing: 0.08em; text-transform: uppercase; text-decoration: none;
  color: var(--mut);
  transition: color 120ms ease;
}
.backrow a:hover { color: var(--ink); }

/* ===== Language switcher & CJK ===== */
.langsw { display: inline-flex; flex-wrap: wrap; align-items: center; gap: 0.4rem; }
.langsw a { color: var(--mut); text-decoration: none; transition: color 120ms ease; }
.langsw a:hover { color: var(--ink); }
.langsw .cur {
  background: var(--lime); color: var(--ink);
  font-weight: 600; padding: 0.0625rem 0.375rem;
}
.langsw .sep { color: var(--line); }
html:lang(zh), html:lang(ja), html:lang(ko) {
  --font-d: 'Archivo', 'Noto Sans SC', 'Noto Sans JP', 'Noto Sans KR', 'PingFang SC',
            'Hiragino Sans', 'Yu Gothic UI', 'Malgun Gothic', 'Apple SD Gothic Neo', sans-serif;
}
html:lang(zh) .hero h1, html:lang(ja) .hero h1, html:lang(ko) .hero h1,
html:lang(zh) .log-hero h1, html:lang(ja) .log-hero h1, html:lang(ko) .log-hero h1 {
  letter-spacing: 0.02em; line-height: 1.08;
}
html:lang(zh) .post h1, html:lang(ja) .post h1, html:lang(ko) .post h1 { letter-spacing: 0.02em; }

/* ===== Reveal ===== */
.reveal {
  opacity: 0; transform: translateY(12px);
  transition: opacity 350ms cubic-bezier(0.22, 0.61, 0.36, 1),
              transform 350ms cubic-bezier(0.22, 0.61, 0.36, 1);
  transition-delay: var(--d, 0ms);
}
.reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .ticker-track { animation: none; }
}