/* =========================================================
   Mengze Wu — personal site
   Design constitution:
     · two colours only: warm black + paper white, one signal accent
     · zero border-radius
     · hairline rules instead of boxes
     · monospace for labels, sans for voice
     · exactly one showpiece: the EEG band
   ========================================================= */

:root {
  --bg:        #131110;
  --bg-2:      #191716;
  --ink:       #EAE5DE;
  --ink-2:     #8A8378;
  --ink-3:     #57524B;
  --accent:    #FF5A2B;
  --line:      rgba(234, 229, 222, 0.14);
  --line-2:    rgba(234, 229, 222, 0.28);

  --pad:  clamp(1.25rem, 5vw, 5rem);
  --maxw: 1280px;

  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "Helvetica Neue",
               "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.22, 0.8, 0.22, 1);
}

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

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
  /* the signal axis on the right is the scroll indicator; a second
     scrollbar next to it would just be noise */
  scrollbar-width: none;
  -ms-overflow-style: none;
}

html::-webkit-scrollbar { width: 0; height: 0; }

body {
  margin: 0;
  background-color: var(--bg);
  /* record-paper grid, held at the edge of visibility. Same domain
     vocabulary as the wave band — it reads as the surface the signal
     was written on, not as a decoration. 88px = 11 × the 8px base. */
  background-image:
    linear-gradient(to right, rgba(234, 229, 222, 0.030) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(234, 229, 222, 0.030) 1px, transparent 1px);
  background-size: 88px 88px;
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

::selection { background: var(--accent); color: var(--bg); }

/* ---------- shared atoms ---------- */

.eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.section {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(8rem, 19vh, 17rem) var(--pad) 0;
}

.section-head { margin-bottom: clamp(3rem, 7vh, 5.5rem); }

.section-title {
  margin: 1.5rem 0 0;
  font-size: clamp(1.9rem, 4.4vw, 3.4rem);
  font-weight: 500;
  letter-spacing: -0.032em;
  line-height: 1.08;
  max-width: 22ch;
  text-wrap: balance;
}

.section-sub {
  margin: 1rem 0 0;
  max-width: 42ch;
  color: var(--ink-2);
}

/* ---------- nav ---------- */

.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 1.15rem var(--pad);
  border-bottom: 1px solid transparent;
  transition: background 0.45s var(--ease), border-color 0.45s var(--ease);
}

.nav.is-scrolled {
  background: var(--bg);
  border-bottom-color: var(--line);
}

.nav-mark {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink);
  text-decoration: none;
}

/* The mark arrives on its own black plate. Under `screen` the plate
   contributes nothing (black is the identity for screen), so it dissolves
   into the page and only the metal shows — no cut-out, no halo, and a
   graceful fallback: an unsupported browser just shows a black square,
   which is nearly invisible on a warm-black page. */
.nav-logo {
  display: block;
  width: 24px;
  height: 24px;
  mix-blend-mode: screen;
  opacity: 0.95;
}

.nav-links { display: flex; gap: clamp(1rem, 3vw, 2.5rem); }

.nav-right {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.6vw, 2.25rem);
}

/* language switcher — same monospace register as the nav links,
   accent marks the active language, nothing else moves */

.lang-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0;
  padding: 0 0 2px;
  background: none;
  border: 0;
  border-bottom: 1px solid transparent;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  transition: border-color 0.3s var(--ease);
}

.lang-toggle > span {
  color: var(--ink-3);
  transition: color 0.3s var(--ease);
}

.lang-toggle > span.is-active { color: var(--accent); }
.lang-toggle .lang-sep { opacity: 0.45; }
.lang-toggle:hover > span { color: var(--ink); }
.lang-toggle:hover > span.is-active { color: var(--accent); }
.lang-toggle:hover { border-bottom-color: var(--line-2); }

.nav-links a {
  position: relative;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
  text-decoration: none;
  padding-bottom: 2px;
  transition: color 0.3s var(--ease);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s var(--ease);
}

.nav-links a:hover { color: var(--ink); }
.nav-links a:hover::after { transform: scaleX(1); }

/* ---------- hero ---------- */

.hero {
  min-height: 100svh;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(4.5rem, 10vh, 7rem) var(--pad) 0;
  display: flex;
  flex-direction: column;
}

.hero-head { flex: 1 0 auto; display: flex; flex-direction: column; justify-content: flex-end; }

.hero-title {
  margin: 0;
  font-size: clamp(2.6rem, min(8vw, 12vh), 7rem);
  font-weight: 500;
  letter-spacing: -0.045em;
  line-height: 0.95;
  text-wrap: balance;
}

.hero-role {
  margin: 1.25rem 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  text-wrap: balance;
}

.hero-claim {
  margin: clamp(2rem, 5vh, 3.5rem) 0 0;
  max-width: 24ch;
  font-size: clamp(1.3rem, 2.5vw, 1.95rem);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.28;
  text-wrap: balance;
}

.hero-lede {
  margin: 1.5rem 0 0;
  max-width: 52ch;
  font-size: clamp(1rem, 1.3vw, 1.12rem);
  color: var(--ink-2);
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(2rem, 5vh, 3rem);
}

/* buttons — square, flat, one accent. No radius, no shadow. */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.35rem;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--bg);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  white-space: nowrap;
  transition: opacity 0.3s var(--ease), background 0.3s var(--ease),
              color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.btn:hover { opacity: 0.85; }

.btn-ghost {
  background: none;
  color: var(--ink);
  border-color: var(--line-2);
}

.btn-ghost:hover {
  border-color: var(--ink);
  opacity: 1;
}

/* the one showpiece */

.wave-band {
  margin-top: clamp(1.5rem, 3.5vh, 2.5rem);
  height: clamp(120px, 14vh, 190px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

#eeg { display: block; width: 100%; height: 100%; }

.hero-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem clamp(1.5rem, 5vw, 4rem);
  padding: 1.25rem 0 2rem;
}

.hf-cell {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-2);
}

.hf-cell i {
  font-style: normal;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-3);
}

/* ---------- projects ----------
   The hierarchy is deliberate and should stay that way:
   NeuroAccess (lg) > BCI World (md) > Basic English / Mini Program (sm).
   Weight comes from type size and padding, not from boxes or colour. */

.projects { border-top: 1px solid var(--line); }

.project {
  padding: clamp(2.5rem, 6vh, 4rem) 0;
  border-bottom: 1px solid var(--line);
}

.project-lg { padding: clamp(3rem, 8vh, 5.5rem) 0; }

.project-pair {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 0 clamp(2rem, 6vw, 5rem);
  border-bottom: 1px solid var(--line);
}

.project-pair .project {
  padding: clamp(2.5rem, 6vh, 4rem) 0;
  border-bottom: 0;
}

.project-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.6rem 1.25rem;
  margin-bottom: 1.25rem;
}

.project-name {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 500;
  letter-spacing: -0.03em;
}

.project-lg .project-name {
  font-size: clamp(2rem, 4.4vw, 3.3rem);
  letter-spacing: -0.035em;
}

.project-kind {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-3);
}

.status {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border: 1px solid var(--line-2);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.project-lede {
  margin: 0 0 1.5rem;
  max-width: 34ch;
  font-size: clamp(1.12rem, 1.8vw, 1.45rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.35;
  text-wrap: balance;
}

.project-lg .project-lede {
  font-size: clamp(1.3rem, 2.4vw, 1.85rem);
  max-width: 40ch;
}

.project-body { max-width: 62ch; }

.project-body p {
  margin: 0 0 1.1rem;
  color: var(--ink-2);
  line-height: 1.72;
}

.project-body p:last-child { margin-bottom: 0; }

.tag-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem 0.55rem;
  margin: 1.75rem 0 0;
  padding: 0;
}

.tag-list li {
  padding: 0.28rem 0.7rem;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-2);
}

.project .btn { margin-top: 2rem; }

/* ---------- work index ---------- */

.work-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.work-item { border-bottom: 1px solid var(--line); }

.work-item a {
  display: grid;
  grid-template-columns: 3.5rem minmax(0, 1fr) minmax(0, 1.6fr) auto;
  align-items: baseline;
  gap: 1rem 1.5rem;
  padding: 1.9rem 0;
  color: var(--ink);
  text-decoration: none;
  transition: padding-left 0.55s var(--ease), color 0.3s var(--ease);
}

.work-item a:hover { padding-left: 1.25rem; }

.w-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-3);
  transition: color 0.3s var(--ease);
}

.w-name {
  font-size: clamp(1.25rem, 2.6vw, 1.9rem);
  font-weight: 500;
  letter-spacing: -0.025em;
}

.w-desc { color: var(--ink-2); font-size: 0.95rem; }

.w-year {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--ink-3);
  white-space: nowrap;
}

.work-item a:hover .w-num,
.work-item a:hover .w-name { color: var(--accent); }

/* ---------- case study ---------- */

.case-grid {
  border-top: 1px solid var(--line);
}

.case-row {
  display: grid;
  grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
  gap: 1.5rem 3rem;
  padding: 2.75rem 0;
  border-bottom: 1px solid var(--line);
}

.case-body p {
  margin: 0;
  max-width: 58ch;
  font-size: clamp(1rem, 1.3vw, 1.12rem);
}

.case-body p + .spec-list { margin-top: 2rem; }

.spec-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem clamp(2rem, 6vw, 4.5rem);
  margin: 0;
  padding: 0;
}

.spec-list li {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}

.spec-num {
  font-family: var(--font-sans);
  font-size: clamp(1.5rem, 2.6vw, 2.1rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.mono-note {
  font-family: var(--font-mono) !important;
  font-size: 12px !important;
  letter-spacing: 0.04em;
  color: var(--ink-2);
}

/* ---------- intro (who) ----------
   Opens the page after the hero. Single column, slightly larger type —
   this is the part a reader should actually read. */

.intro-body {
  border-top: 1px solid var(--line);
  padding-top: clamp(2rem, 5vh, 3.5rem);
  max-width: 64ch;
}

.intro-body p {
  margin: 0 0 1.75rem;
  font-size: clamp(1.05rem, 1.5vw, 1.28rem);
  line-height: 1.72;
}

.intro-body p:last-child { margin-bottom: 0; }

/* ---------- about ---------- */

.about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
  gap: 3rem clamp(3rem, 8vw, 7rem);
  border-top: 1px solid var(--line);
  padding-top: 3rem;
}

.about-prose p {
  margin: 0 0 1.5rem;
  max-width: 54ch;
  font-size: clamp(1rem, 1.3vw, 1.12rem);
}

.about-prose p:last-child { margin-bottom: 0; }

.timeline { list-style: none; margin: 0; padding: 0; }

.timeline li {
  display: grid;
  grid-template-columns: 5.5rem 1fr;
  gap: 1rem;
  padding: 0.9rem 0;
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
  color: var(--ink-2);
}

.timeline li:last-child { border-bottom: 1px solid var(--line); }

.t-year {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ink-3);
}

/* ---------- contact ---------- */

.contact { padding-bottom: clamp(3rem, 8vh, 6rem); }

.contact-mail {
  display: inline-block;
  font-size: clamp(1.4rem, 5vw, 3.6rem);
  font-weight: 500;
  letter-spacing: -0.035em;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--accent);
  padding-bottom: 0.12em;
  transition: color 0.3s var(--ease);
  word-break: break-all;
}

.contact-mail:hover { color: var(--accent); }

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem clamp(1.5rem, 4vw, 3rem);
  margin-top: 3rem;
}

.contact-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-2);
  text-decoration: none;
  transition: color 0.3s var(--ease);
}

.contact-links a:hover { color: var(--accent); }

.colophon {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: clamp(4rem, 12vh, 8rem);
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--ink-3);
}

/* ---------- scroll trace ----------
   A signal axis on the right edge: the page read as a recording.
   One hairline, one travelling mark. Nothing else. */

.scroll-trace {
  position: fixed;
  right: clamp(0.7rem, 1.8vw, 1.6rem);
  top: 22vh;
  height: 56vh;
  width: 1px;
  background: var(--line);
  z-index: 60;
  opacity: 0;
  transition: opacity 0.7s var(--ease);
  pointer-events: none;
}

.scroll-trace.is-visible { opacity: 1; }

.trace-fill {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 0;
  background: var(--accent);
  opacity: 0.5;
}

.trace-head {
  position: absolute;
  left: 50%;
  top: 0;
  width: 3px;
  height: 11px;
  margin: -5px 0 0 -1.5px;
  background: var(--accent);
}

/* ---------- entrance ---------- */

@keyframes rise {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: none; }
}

@keyframes fade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.hero-head > * { animation: rise 1.1s var(--ease) backwards; }
.hero-head > *:nth-child(1) { animation-delay: 0.05s; }
.hero-head > *:nth-child(2) { animation-delay: 0.16s; }
.hero-head > *:nth-child(3) { animation-delay: 0.30s; }

.wave-band { animation: fade 1.3s var(--ease) 0.46s backwards; }
.hero-foot { animation: fade 1.3s var(--ease) 0.62s backwards; }

/* ---------- scroll reveal ---------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}

.reveal.is-in { opacity: 1; transform: none; }

/* Section headings print themselves in — the mask lifts from the bottom
   so the words rise out of the page. clip-path only (no DOM surgery),
   so it does not interfere with the i18n text swap. */

.mask-reveal {
  clip-path: inset(0 -24px 105% -24px);
  transition: clip-path 1.15s var(--ease);
}

.mask-reveal.is-in { clip-path: inset(0 -24px -24px -24px); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .mask-reveal { clip-path: none; transition: none; }
  .hero-head > *,
  .wave-band,
  .hero-foot { animation: none; }
}

/* ---------- Chinese typography ----------
   CJK glyphs are full-width, so the tight tracking and 0.98 leading that
   flatter Latin display type crowd the characters. Loosen both. */

html[lang^="zh"] .hero-title {
  font-size: clamp(1.85rem, min(6.2vw, 9.5vh), 5.2rem);
  letter-spacing: -0.005em;
  line-height: 1.16;
}

html[lang^="zh"] .section-title,
html[lang^="zh"] .w-name,
html[lang^="zh"] .contact-mail {
  letter-spacing: 0;
  line-height: 1.25;
}

html[lang^="zh"] .section-title { text-wrap: balance; }

html[lang^="zh"] .hero-lede,
html[lang^="zh"] .intro-body p,
html[lang^="zh"] .case-body p,
html[lang^="zh"] .about-prose p,
html[lang^="zh"] .timeline li {
  line-height: 1.85;
  /* CJK breaks between any two glyphs by default, which orphans single
     characters at line ends. pretty lets the engine avoid that. */
  text-wrap: pretty;
}

html[lang^="zh"] .eyebrow { letter-spacing: 0.12em; }
html[lang^="zh"] .hf-cell { letter-spacing: 0.02em; }

/* ---------- how i build ----------
   Four steps on one horizontal line. No illustration. */

.process {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.step {
  padding: 2rem clamp(1rem, 3vw, 2rem) 2.25rem 0;
  border-right: 1px solid var(--line);
}

.step:last-child {
  border-right: 0;
  padding-right: 0;
}

.step-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--accent);
}

.step-title {
  margin: 1.5rem 0 0.6rem;
  font-size: clamp(1.1rem, 1.6vw, 1.3rem);
  font-weight: 500;
  letter-spacing: -0.02em;
}

.step-body {
  margin: 0;
  max-width: 30ch;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--ink-2);
}

/* ---------- prose ---------- */

.prose {
  max-width: 64ch;
  border-top: 1px solid var(--line);
  padding-top: clamp(2rem, 5vh, 3rem);
}

.prose p {
  margin: 0 0 1.5rem;
  font-size: clamp(1.02rem, 1.35vw, 1.15rem);
  line-height: 1.75;
  color: var(--ink-2);
}

/* the opening line carries the weight of a statement, so give it one */
.prose p:first-child {
  font-size: clamp(1.2rem, 1.9vw, 1.5rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  line-height: 1.4;
  color: var(--ink);
}

.prose p:last-child { margin-bottom: 0; }

/* ---------- focus ---------- */

.focus-list {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 0.7rem;
  margin: 0;
  padding: 0;
}

.focus-list li {
  padding: 0.45rem 0.9rem;
  border: 1px solid var(--line);
  font-size: 0.95rem;
  color: var(--ink-2);
}

/* ---------- principles ---------- */

.principles {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.principle {
  display: grid;
  grid-template-columns: minmax(0, 22ch) minmax(0, 1fr);
  gap: 0.75rem clamp(2rem, 5vw, 4rem);
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--line);
}

.principle-title {
  margin: 0;
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.principle-body {
  margin: 0;
  max-width: 56ch;
  color: var(--ink-2);
  line-height: 1.7;
}

/* ---------- responsive ---------- */

@media (max-width: 860px) {
  .project-pair {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .project-pair .project:first-child {
    border-bottom: 1px solid var(--line);
  }

  .process { grid-template-columns: 1fr; }

  .step {
    border-right: 0;
    border-bottom: 1px solid var(--line);
    padding: 1.75rem 0;
  }

  .step:last-child {
    border-bottom: 0;
    padding-bottom: 0;
  }

  .principle {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
}

@media (max-width: 520px) {
  .nav { padding: 1rem var(--pad); }
  .nav-links { gap: 0.85rem; }
  .nav-links a { font-size: 11px; }
  .nav-right { gap: 0.85rem; }
  .lang-toggle { font-size: 11px; gap: 0.3rem; }

  /* 88px would leave only four columns on a phone */
  body { background-size: 56px 56px; }
}