/* ============================================================
   Tokens (from Portfolio v2.dc.html)
   ============================================================ */
:root {
  --bg: #d3d1cb;
  --panel: #e4e2dc;
  --hatch: #c4c2bb;
  --ink: #111;
  --acid: oklch(0.93 0.23 125);
  --hot: oklch(0.72 0.25 350);
  --rule: 3px solid var(--ink);
  --pad-x: clamp(20px, 3vw, 40px);

  --f-display: 'Tektur', 'Noto Sans SC', sans-serif;
  --f-pixel: 'Doto', 'JetBrains Mono', monospace;
  --f-mono: 'JetBrains Mono', ui-monospace, monospace;
  --f-cn-display: 'ZCOOL QingKe HuangYou', 'Noto Sans SC', sans-serif;
  --f-body: 'Noto Sans SC', system-ui, sans-serif;
}

/* ============================================================
   Base
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 64px; }
html, body { margin: 0; background: var(--bg); color: var(--ink); }
body {
  font-family: var(--f-display);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
html.is-booting, html.is-booting body { overflow: hidden; }
a { color: var(--ink); text-decoration: none; }
a:hover { color: var(--ink); background: var(--acid); }
::selection { background: var(--acid); color: var(--ink); }
:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; box-shadow: 0 0 0 6px var(--acid); }
button { font: inherit; color: inherit; }
img { display: block; max-width: 100%; }
mark { background: var(--ink); color: var(--acid); padding: 0 8px; }
.display-cn { font-family: var(--f-cn-display); }

.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;
}
.skip {
  position: absolute; left: 12px; top: -60px; z-index: 200;
  padding: 10px 14px; border: var(--rule); background: var(--acid);
  font: 700 13px var(--f-mono);
}
.skip:focus { top: 12px; }

@keyframes mq { from { transform: translateX(0); } to { transform: translateX(-50%); } }
@keyframes blink { 50% { opacity: 0; } }
@keyframes panelIn { from { clip-path: inset(0 0 100% 0); } to { clip-path: inset(0 0 0 0); } }
@keyframes glitch {
  0%, 88%, 100% { transform: none; text-shadow: none; }
  90% { transform: translate(-6px, 2px) skewX(-10deg); text-shadow: 6px 0 var(--acid), -6px 0 var(--hot); }
  93% { transform: translate(5px, -2px); text-shadow: -4px 0 var(--acid); }
  96% { transform: skewX(6deg); clip-path: inset(20% 0 35% 0); }
}
.blink { animation: blink 1s steps(1) infinite; }

/* Film grain: fixed, non-interactive layer (never on a scrolling container). */
.grain {
  position: fixed; inset: 0; z-index: 50; pointer-events: none;
  opacity: 0.18; mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.hazard { height: 24px; background: repeating-linear-gradient(-45deg, var(--acid) 0 14px, var(--ink) 14px 28px); }
.hazard--rev {
  background: repeating-linear-gradient(-45deg, var(--ink) 0 14px, var(--acid) 14px 28px);
  border-bottom: var(--rule);
}

/* ============================================================
   Loader
   ============================================================ */
.loader {
  position: fixed; inset: 0; z-index: 100;
  display: flex; flex-direction: column;
  background: var(--ink); color: var(--acid);
  clip-path: inset(0 0 0 0);
  transition: clip-path .55s steps(9);
  cursor: pointer;
}
html:not(.is-booting) .loader { display: none; }
.loader.is-leaving { clip-path: inset(0 0 100% 0); }
.loader__bar {
  display: flex; justify-content: space-between; gap: 16px;
  padding: 18px clamp(16px, 3vw, 40px);
  border-bottom: 3px solid var(--acid);
  font: 13px var(--f-mono); white-space: nowrap;
}
.loader__logo { font: 900 20px var(--f-pixel); }
.loader__body {
  flex: 1; display: flex; flex-direction: column; justify-content: flex-end; gap: 24px;
  padding: clamp(16px, 3vw, 40px);
}
.loader__line { display: flex; align-items: center; gap: 10px; font: 14px var(--f-mono); white-space: nowrap; }
.loader__line svg { flex-shrink: 0; }
.loader__pct { display: flex; align-items: flex-end; justify-content: space-between; gap: 20px; flex-wrap: wrap; }
.loader__num {
  font-family: var(--f-display); font-weight: 900;
  font-size: clamp(110px, 26vw, 380px); line-height: 0.8; letter-spacing: -0.05em;
  font-variant-numeric: tabular-nums;
}
.loader__sign { font-family: var(--f-display); font-weight: 900; font-size: clamp(40px, 6vw, 90px); line-height: 1; }
.loader__blocks { display: grid; grid-template-columns: repeat(20, 1fr); gap: 4px; height: 22px; }
.loader__blocks > i { border: 2px solid var(--acid); }
.loader__blocks > i.on { background: var(--acid); }

/* ============================================================
   Header
   ============================================================ */
.topbar {
  position: sticky; top: 0; z-index: 40;
  display: flex; flex-wrap: wrap;
  border-bottom: var(--rule); background: var(--bg);
  font: 13px var(--f-mono); text-transform: uppercase;
}
.topbar__logo {
  padding: 14px 20px; border-right: var(--rule);
  font: 900 20px var(--f-pixel); letter-spacing: 0.02em;
}
.topbar__nav { display: flex; flex-wrap: wrap; flex: 1; }
.topbar__nav a { padding: 16px 20px; border-right: var(--rule); white-space: nowrap; }
.topbar__lang {
  display: flex; align-items: center; gap: 6px;
  padding: 16px 20px; border: 0; border-left: var(--rule);
  background: transparent; cursor: pointer; font-family: var(--f-mono); font-size: 13px;
}
.topbar__lang [data-lang] { padding: 2px 5px; }
.topbar__lang [data-lang].is-active { background: var(--ink); color: var(--acid); }
.topbar__lang:hover { background: var(--acid); }
.topbar__badge {
  display: flex; gap: 8px; align-items: center;
  padding: 16px 20px; background: var(--ink); color: var(--acid); white-space: nowrap;
}
.topbar__dot { width: 9px; height: 9px; background: var(--acid); display: inline-block; animation: blink 1s steps(1) infinite; }

/* ============================================================
   Hero
   ============================================================ */
.hero { border-bottom: var(--rule); }
.hero__meta {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  padding: clamp(24px, 4vw, 48px) clamp(16px, 3vw, 32px) 0;
  font: 13px var(--f-mono);
}
.hero__meta > span { white-space: nowrap; }
.hero__meta time { font-variant-numeric: tabular-nums; }
.barcode {
  flex: 1; min-width: 80px; max-width: 280px; height: 14px; align-self: center;
  background: repeating-linear-gradient(90deg, var(--ink) 0 2px, transparent 2px 4px, var(--ink) 4px 8px, transparent 8px 9px, var(--ink) 9px 10px, transparent 10px 14px, var(--ink) 14px 15px, transparent 15px 17px);
}
.hero__stage { position: relative; padding: 0 clamp(12px, 2vw, 24px); }
.hero__name {
  margin: 0; padding-top: 12px;
  font-family: var(--f-display); font-weight: 900; font-stretch: 100%;
  font-size: clamp(68px, 18vw, 290px); line-height: 0.84; letter-spacing: -0.04em;
  text-transform: uppercase;
}
.sticker {
  position: absolute; right: clamp(12px, 6vw, 90px); top: 18%;
  display: flex; align-items: center; gap: 12px;
  padding: 14px 22px; transform: rotate(-8deg);
  background: var(--acid); border: var(--rule); box-shadow: 8px 8px 0 var(--ink);
  font-size: clamp(24px, 3.4vw, 46px); white-space: nowrap;
}
.sticker svg { flex-shrink: 0; }
.hero__id {
  position: absolute; right: clamp(12px, 2vw, 24px); bottom: 8px;
  display: flex; align-items: center; gap: 10px;
  font: 900 clamp(16px, 2.2vw, 30px) var(--f-pixel);
}
.reg { position: absolute; bottom: -14px; }
.reg--l { left: 0; }
.reg--r { right: 0; }

.hero__cells {
  display: grid; grid-template-columns: repeat(3, 1fr);
  margin-top: clamp(20px, 3vw, 40px); border-top: var(--rule);
}
.cell { padding: 22px; border-right: var(--rule); }
.cell--dark {
  border-right: 0; background: var(--ink); color: var(--bg);
  display: flex; flex-direction: column; justify-content: space-between; gap: 16px;
}
.cell__label { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; font: 12px var(--f-mono); }
.cell__label--acid { color: var(--acid); margin-bottom: 0; }
.cell__role { font: 700 20px/1.35 var(--f-body); }
.cell__focus { margin: 0; font: 16px/1.6 var(--f-body); text-wrap: pretty; }
.cell__now { font: 14px/1.6 var(--f-mono); }

/* ============================================================
   Marquee (the one marquee on the page)
   ============================================================ */
.marquee { border-bottom: var(--rule); background: var(--acid); overflow: hidden; padding: 14px 0; }
.marquee__track {
  display: flex; width: max-content;
  animation: mq 36s linear infinite;
  font-family: var(--f-display), var(--f-cn-display); font-weight: 900; font-size: 30px;
  letter-spacing: 0.01em; white-space: pre;
}

/* ============================================================
   Section labels
   ============================================================ */
.sec-label {
  display: flex; justify-content: space-between; align-items: baseline;
  font: 13px var(--f-mono);
}
.sec-label > span { white-space: nowrap; }
.sec-label__num { display: flex; align-items: center; gap: 8px; }
.sec-label svg { flex-shrink: 0; }
.sec-label--inline { justify-content: flex-start; align-items: center; gap: 8px; margin-bottom: 10px; }
.sec-label--acid { color: var(--acid); margin-bottom: 0; }

/* ============================================================
   About
   ============================================================ */
.about {
  display: grid; grid-template-columns: repeat(2, minmax(0, 1fr));
  border-bottom: var(--rule);
}
.about__side {
  border-right: var(--rule); padding: var(--pad-x);
  display: flex; flex-direction: column; gap: 32px;
}
.about__main { padding: var(--pad-x); display: flex; flex-direction: column; gap: 32px; }
.about__title {
  margin: 0; font-weight: 400;
  font-size: clamp(38px, 5.4vw, 74px); line-height: 1.1; letter-spacing: 0; text-wrap: pretty;
}
.about__body { margin: 0; max-width: 60ch; font: 17px/1.8 var(--f-body); text-wrap: pretty; }

.stack { border: var(--rule); }
.stack__head { padding: 10px 14px; border-bottom: var(--rule); background: var(--ink); color: var(--bg); font: 12px var(--f-mono); }
.stack__grid { margin: 0; }
.stack__item {
  display: grid; grid-template-columns: 84px minmax(0, 1fr); gap: 14px; align-items: start;
  padding: 14px; border-top: 1.5px solid var(--ink);
}
.stack__item:first-child { border-top: 0; }
.stack__item dt { padding-top: 3px; font: 11px var(--f-mono); }
.stack__item dd { margin: 0; display: flex; flex-wrap: wrap; row-gap: 2px; font: 700 15px/1.5 var(--f-body); }
@media (max-width: 420px) {
  .stack__item { grid-template-columns: 62px minmax(0, 1fr); gap: 10px; padding: 12px; }
}
/* Plain words; each item (with its trailing slash) is unbreakable, so a line
   never starts with "/" or splits a name. */
.stack__tag { white-space: nowrap; }
.stack__tag:not(:last-child)::after { content: "/"; margin: 0 9px; font-weight: 400; opacity: 0.4; }

.timeline { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
.timeline li {
  display: grid; grid-template-columns: 110px 1fr auto; gap: 16px; align-items: baseline;
  padding: 14px 0; border-top: var(--rule); font: 15px var(--f-body);
}
.timeline .t-y, .timeline .t-org { font: 13px var(--f-mono); }
.timeline .t-role { font-weight: 700; }
.timeline a.t-org { text-decoration: underline; text-underline-offset: 3px; }

/* ============================================================
   Projects
   ============================================================ */
.work { border-bottom: var(--rule); }
.work__head {
  display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-end; gap: 20px;
  padding: var(--pad-x); border-bottom: var(--rule);
}
.work__title {
  margin: 0; font-family: var(--f-display); font-weight: 900;
  font-size: clamp(52px, 10vw, 160px); line-height: 0.88; letter-spacing: -0.04em;
  text-transform: uppercase;
}
.glitch { display: inline-block; animation: glitch 4.5s steps(1) infinite; }

.filters { display: flex; flex-shrink: 0; border: var(--rule); font: 13px var(--f-mono); }
.filters button {
  flex-shrink: 0; white-space: nowrap; padding: 12px 18px;
  border: 0; background: transparent; cursor: pointer;
}
.filters button + button { border-left: var(--rule); }
.filters button[aria-pressed="true"] { background: var(--ink); color: var(--acid); }
.filters button:not([aria-pressed="true"]):hover { background: var(--acid); }

.row { border-bottom: var(--rule); }
.row:last-child { border-bottom: 0; }
.rows.is-hidden .row { opacity: 0; }
.row__head {
  width: 100%; display: grid; grid-template-columns: 56px minmax(0, 1fr) auto 30px;
  gap: 16px; align-items: center; text-align: left;
  padding: 22px var(--pad-x); border: 0; background: transparent; cursor: pointer;
  transition: background .12s steps(3), color .12s steps(3);
}
.row.is-open .row__head { background: var(--acid); }
.row__head:hover, .row__head:focus-visible { background: var(--ink); color: var(--acid); }
.row__no { font: 14px var(--f-mono); font-variant-numeric: tabular-nums; }
.row__title {
  font-family: var(--f-cn-display); font-size: clamp(24px, 3.6vw, 50px); line-height: 1.1;
  transition: transform .18s steps(4);
}
.row__head:hover .row__title {
  transform: translateX(18px) skewX(-8deg);
  text-shadow: 3px 0 var(--hot), -3px 0 var(--bg);
}
.row__meta { display: flex; gap: 16px; align-items: center; }
.row__type {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 4px 8px; border: 2px solid currentColor; font: 12px var(--f-mono); white-space: nowrap;
}
.row__metric { font: 13px var(--f-mono); white-space: nowrap; min-width: 84px; text-align: right; }
.row__icon {
  font-family: var(--f-display); font-weight: 900; font-size: 30px; line-height: 1;
  display: inline-block; text-align: center; transition: transform .2s steps(4);
}
.row__head:hover .row__icon { transform: rotate(90deg); }
.row.is-open .row__icon { transform: rotate(45deg); }

.row__panel {
  display: grid;
  border-top: var(--rule); background: var(--panel);
  animation: panelIn .45s steps(9) both;
}
.row__panel[hidden] { display: none; }
/* Image column keeps its exact 16:10; the divider lives on the text column so it
   always spans the full panel height, however long the description runs. */
@media (min-width: 900px) {
  .row__panel { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
  .detail { border-left: var(--rule); }
}
@media (max-width: 899px) {
  .row__panel { grid-template-columns: 1fr; }
  .shot { border-bottom: var(--rule); }
}
.shot {
  margin: 0; aspect-ratio: 16 / 10; align-self: start; overflow: hidden;
  background: repeating-linear-gradient(-45deg, var(--hatch) 0 10px, var(--bg) 10px 20px);
}
.shot img { width: 100%; height: 100%; object-fit: cover; }
.detail { padding: clamp(20px, 3vw, 36px); display: flex; flex-direction: column; gap: 20px; }
.detail p { margin: 0; font: 17px/1.8 var(--f-body); text-wrap: pretty; }
.detail__spec {
  margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px;
  font: 13px/1.6 var(--f-mono);
}
.detail__spec dt { font-size: 11px; line-height: 1.6rem; padding: 0 6px; background: var(--ink); color: var(--bg); align-self: start; }
.detail__spec dd { margin: 0; line-height: 1.6rem; }
.detail__links { display: flex; gap: 12px; flex-wrap: wrap; margin-top: auto; }
.btn {
  display: inline-block; padding: 10px 16px; border: var(--rule);
  font: 700 13px var(--f-mono); white-space: nowrap;
  background: var(--bg); box-shadow: 4px 4px 0 var(--ink);
  transition: transform .1s steps(2), box-shadow .1s steps(2);
}
.btn--acid { background: var(--acid); }
.btn:active { transform: translate(3px, 3px); box-shadow: 1px 1px 0 var(--ink); }
.btn--muted { box-shadow: none; border-style: dashed; cursor: default; }
.btn--muted:hover { background: var(--bg); }

/* ============================================================
   Contact (the one deliberate inverted block)
   ============================================================ */
.contact { background: var(--ink); color: var(--bg); }
.contact__inner {
  padding: clamp(28px, 5vw, 64px) var(--pad-x);
  display: flex; flex-direction: column; gap: 32px;
}
.contact__big {
  align-self: flex-start; color: var(--bg);
  font-family: var(--f-display); font-weight: 900;
  font-size: clamp(36px, 8vw, 128px); line-height: 0.92; letter-spacing: -0.03em;
  word-break: break-all;
}
.contact__big:hover { color: var(--ink); background: var(--acid); }
.socials {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  border: 3px solid var(--bg); overflow: hidden;
}
.socials a {
  display: flex; justify-content: space-between; gap: 12px;
  padding: 18px; margin-right: -3px; border-right: 3px solid var(--bg);
  color: var(--bg); font: 14px var(--f-mono);
}
.socials a span:first-child { white-space: nowrap; }
.socials a:hover { background: var(--acid); color: var(--ink); }
.contact :focus-visible { outline-color: var(--acid); box-shadow: none; }
.footer {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 12px;
  padding: 16px var(--pad-x); border-top: 3px solid var(--bg);
  font: 12px var(--f-mono);
}

/* ============================================================
   English: ZCOOL is a CJK display face; swap to Tektur for Latin copy.
   ============================================================ */
:lang(en) .display-cn,
:lang(en) .row__title {
  font-family: var(--f-display); font-weight: 800; letter-spacing: -0.02em;
}
:lang(en) .about__title { font-size: clamp(34px, 4.6vw, 64px); line-height: 1.05; }
:lang(en) .row__title { font-size: clamp(22px, 3vw, 42px); }

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 860px) {
  .about { grid-template-columns: 1fr; }
  .about__side { border-right: 0; border-bottom: var(--rule); }
  .topbar__badge { flex: 1 1 100%; border-top: var(--rule); }
}
@media (max-width: 640px) {
  /* index label on its own line; barcode fills the space beside the clock */
  .hero__meta { display: grid; grid-template-columns: minmax(0, 1fr) auto; column-gap: 14px; row-gap: 10px; align-items: center; }
  .hero__meta > span:first-child { grid-column: 1 / -1; }
  .hero__meta .barcode { max-width: none; min-width: 0; width: 100%; }
  .hero__cells { grid-template-columns: 1fr; }
  .cell { border-right: 0; border-bottom: var(--rule); }
  .cell--dark { border-bottom: 0; }
}
@media (max-width: 560px) {
  /* Header: logo + language on row one, three equal nav cells on row two. */
  .topbar { display: grid; grid-template-columns: 1fr auto; }
  .topbar__logo { border-right: 0; }
  .topbar__lang { grid-column: 2; grid-row: 1; padding: 14px 16px; }
  .topbar__nav { grid-column: 1 / -1; display: grid; grid-template-columns: repeat(3, 1fr); border-top: var(--rule); }
  .topbar__nav a { padding: 12px 8px; text-align: center; }
  .topbar__nav a:last-child { border-right: 0; }
  .topbar__badge { display: none; }
  .reg { display: none; }
  .row__head { grid-template-columns: 44px minmax(0, 1fr) 30px; }
  .row__meta { display: none; }
  .timeline li { grid-template-columns: 1fr auto; }
  .timeline .t-y { grid-column: 1 / -1; }
  .sticker { top: auto; bottom: -18px; right: 8px; padding: 10px 14px; box-shadow: 5px 5px 0 var(--ink); }
  .hero__id { display: none; }
  .hero__cells { margin-top: 44px; }
}

/* ============================================================
   Reduced motion: everything collapses to static.
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation: none !important;
    transition: none !important;
  }
  .row__head:hover .row__title { transform: none; text-shadow: none; }
  .row__head:hover .row__icon { transform: none; }
  .row.is-open .row__icon { transform: rotate(45deg); }
  .marquee__track { flex-wrap: wrap; width: auto; }
  .marquee__track > span + span { display: none; }
}