:root {
  --ink: #051A2B;
  --ink-2: #0B2940;
  --ink-3: #04141F;
  --paper: #F4EBDD;
  --cyan: #2DE2C5;
  --orange: #FF7A1A;
  --mist: #A8C7D1;
  --teal: #0F6B73;
  --coral: #E85D4A;
  --shadow-paper: #C9B79C;
  --header-h: 66px;
  --shell: 1240px;
  --font-sans: "HarmonyOS Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-narrow: "Arial Narrow", "Helvetica Neue Condensed", "HarmonyOS Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", "Cascadia Mono", Consolas, "Liberation Mono", monospace;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100%;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    radial-gradient(1200px 620px at 84% -12%, rgba(45, 226, 197, 0.14), transparent 62%),
    radial-gradient(900px 520px at -6% 104%, rgba(15, 107, 115, 0.28), transparent 66%),
    repeating-linear-gradient(90deg, rgba(168, 199, 209, 0.045) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(0deg, rgba(168, 199, 209, 0.045) 0 1px, transparent 1px 96px);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img, picture, svg { max-width: 100%; }
ul, ol { margin: 0; padding: 0; }

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--font-narrow);
  font-weight: 800;
  line-height: 1.14;
  letter-spacing: -0.012em;
  font-stretch: condensed;
  text-wrap: balance;
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--cyan); text-decoration-thickness: 1px; text-underline-offset: 3px; }

:where(a, button, input, select, textarea, [tabindex]):focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 2px;
}

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

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- skip link ---------- */
.skip-link {
  position: fixed;
  top: 0;
  left: 50%;
  z-index: 200;
  transform: translate(-50%, -160%);
  padding: 0.6rem 1.3rem;
  font-family: var(--font-narrow);
  font-weight: 800;
  font-size: 0.86rem;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: var(--orange);
  border-radius: 0 0 3px 3px;
  text-decoration: none;
  transition: transform 0.22s ease;
}
.skip-link:focus { transform: translate(-50%, 0); }

/* ---------- header ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 120;
  border-bottom: 1px solid transparent;
  background: linear-gradient(180deg, rgba(5, 26, 43, 0.78) 0%, rgba(5, 26, 43, 0) 100%);
  transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.site-header[data-scrolled] {
  background: rgba(11, 41, 64, 0.95);
  border-bottom-color: rgba(168, 199, 209, 0.22);
  box-shadow: 0 22px 44px -34px #000;
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.header-progress {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: rgba(168, 199, 209, 0.16);
  overflow: hidden;
}
.header-progress > span {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--teal) 0%, var(--cyan) 58%, var(--orange) 100%);
}

.header-inner {
  width: min(var(--shell), 100% - 3rem);
  margin-inline: auto;
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  color: var(--paper);
  text-decoration: none;
  flex: 0 0 auto;
}
.brand-glyph {
  display: inline-flex;
  align-items: flex-end;
  gap: 3px;
  height: 27px;
}
.brand-glyph span {
  display: block;
  width: 5px;
  border-radius: 1px;
  transform: skewX(-18deg);
  background: var(--cyan);
}
.brand-glyph span:nth-child(1) { height: 12px; background: var(--teal); }
.brand-glyph span:nth-child(2) { height: 19px; }
.brand-glyph span:nth-child(3) { height: 27px; background: var(--orange); }

.brand-text { display: flex; flex-direction: column; line-height: 1.12; }
.brand-name {
  font-family: var(--font-narrow);
  font-weight: 800;
  font-size: 1.16rem;
  letter-spacing: 0.07em;
}
.brand-tag {
  font-size: 0.64rem;
  letter-spacing: 0.26em;
  color: var(--mist);
}

.nav-rail { display: flex; align-items: center; gap: 1.7rem; }
.nav-list { display: flex; align-items: center; gap: 1.35rem; list-style: none; }
.nav-list a {
  position: relative;
  display: inline-block;
  padding: 0.4rem 0;
  font-size: 0.86rem;
  font-weight: 500;
  letter-spacing: 0.045em;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s ease;
}
.nav-list a::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -3px;
  height: 2px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: 0 50%;
  transition: transform 0.25s ease;
}
.nav-list a:hover, .nav-list a:focus-visible { color: var(--paper); }
.nav-list a:hover::after, .nav-list a:focus-visible::after { transform: scaleX(1); }
.nav-list a[aria-current="page"] { color: var(--paper); font-weight: 700; }
.nav-list a[aria-current="page"]::after { transform: scaleX(1); background: var(--orange); }

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.5rem 1.05rem;
  font-family: var(--font-narrow);
  font-size: 0.84rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--ink);
  background: var(--orange);
  border-radius: 2px;
  text-decoration: none;
  box-shadow: 3px 3px 0 rgba(5, 26, 43, 0.4);
  transition: background 0.2s ease, color 0.2s ease, box-shadow 0.2s ease;
}
.nav-cta:hover, .nav-cta:focus-visible {
  background: var(--cyan);
  color: var(--ink);
  box-shadow: 3px 3px 0 rgba(5, 26, 43, 0.55);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.72rem;
  font: inherit;
  font-size: 0.76rem;
  letter-spacing: 0.16em;
  color: var(--paper);
  background: transparent;
  border: 1px solid rgba(168, 199, 209, 0.42);
  border-radius: 2px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }
.nav-toggle-bar {
  position: relative;
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: background 0.2s ease;
}
.nav-toggle-bar::before, .nav-toggle-bar::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
  transition: transform 0.22s ease;
}
.nav-toggle-bar::before { top: -6px; }
.nav-toggle-bar::after { top: 6px; }
.site-header[data-open] .nav-toggle { color: var(--cyan); border-color: var(--cyan); }
.site-header[data-open] .nav-toggle-bar { background: transparent; }
.site-header[data-open] .nav-toggle-bar::before { transform: translateY(6px) rotate(45deg); }
.site-header[data-open] .nav-toggle-bar::after { transform: translateY(-6px) rotate(-45deg); }
.nav-toggle-label { line-height: 1; }

/* ---------- main shells ---------- */
.site-main { display: block; padding-top: var(--header-h); }
.site-main--flush { padding-top: 0; }

.arena-shell {
  width: min(var(--shell), 100% - 3rem);
  margin-inline: auto;
}
.section-shell { padding-block: clamp(2.6rem, 6vw, 5rem); }

/* ---------- typography utilities ---------- */
.display {
  font-size: clamp(2.5rem, 7.4vw, 5.4rem);
  line-height: 0.94;
  letter-spacing: -0.035em;
}
.h2 { font-size: clamp(1.7rem, 3.6vw, 2.6rem); line-height: 1.12; }
.h3 { font-size: clamp(1.16rem, 2.1vw, 1.5rem); line-height: 1.24; }
.lead {
  font-size: clamp(1rem, 1.5vw, 1.16rem);
  line-height: 1.8;
  color: var(--mist);
  max-width: 58ch;
}
.mono {
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
}
.kicker {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.26em;
  color: var(--cyan);
  text-transform: uppercase;
}
.anno {
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--mist);
  text-transform: uppercase;
}
.rule {
  height: 1px;
  border: 0;
  margin: 0;
  background: linear-gradient(90deg, rgba(45, 226, 197, 0.55), rgba(168, 199, 209, 0.1) 70%, transparent);
}

/* ---------- panels ---------- */
.pane {
  position: relative;
  background: var(--ink-2);
  color: var(--paper);
  border: 1px solid rgba(168, 199, 209, 0.22);
  border-radius: 3px;
}
.pane--ink { background: var(--ink-2); color: var(--paper); }
.pane--paper {
  background: var(--paper);
  color: #0A2233;
  border-color: var(--shadow-paper);
  box-shadow: 9px 9px 0 rgba(201, 183, 156, 0.16);
}
.pane--paper a { color: var(--teal); }
.pane--paper .kicker { color: var(--teal); }
.pane--paper .lead { color: #2B4A5C; }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.4rem;
  font-family: var(--font-narrow);
  font-size: 0.9rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  line-height: 1.2;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}
.btn--primary {
  color: var(--ink);
  background: var(--orange);
  box-shadow: 4px 4px 0 rgba(5, 26, 43, 0.38);
}
.btn--primary:hover, .btn--primary:focus-visible {
  background: var(--cyan);
  color: var(--ink);
  box-shadow: 4px 4px 0 rgba(5, 26, 43, 0.5);
}
.btn--ink {
  color: var(--paper);
  background: var(--ink);
  box-shadow: 4px 4px 0 rgba(5, 26, 43, 0.26);
}
.btn--ink:hover, .btn--ink:focus-visible { background: var(--teal); color: #fff; }
.btn--ghost {
  color: var(--paper);
  background: transparent;
  border-color: rgba(168, 199, 209, 0.5);
}
.btn--ghost:hover, .btn--ghost:focus-visible { border-color: var(--cyan); color: var(--cyan); }
.btn--sm { padding: 0.45rem 0.92rem; font-size: 0.79rem; }

/* ---------- tags ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.22rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.67rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
  background: rgba(45, 226, 197, 0.14);
  border: 1px solid rgba(45, 226, 197, 0.4);
  border-radius: 2px;
}
.tag--orange {
  color: var(--orange);
  background: rgba(255, 122, 26, 0.16);
  border-color: rgba(255, 122, 26, 0.46);
}
.tag--paper {
  color: var(--teal);
  background: rgba(5, 26, 43, 0.07);
  border-color: rgba(15, 107, 115, 0.34);
}

/* ---------- breadcrumbs ---------- */
.crumbs {
  font-family: var(--font-mono);
  font-size: 0.71rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}
.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem;
  list-style: none;
}
.crumbs li { display: inline-flex; align-items: center; gap: 0.45rem; }
.crumbs li + li::before { content: "/"; color: var(--teal); }
.crumbs a { color: var(--mist); text-decoration: none; }
.crumbs a:hover, .crumbs a:focus-visible { color: var(--cyan); }
.crumbs [aria-current="page"] { color: var(--paper); }

/* ---------- prose ---------- */
.prose {
  max-width: 68ch;
  font-size: 1.02rem;
  line-height: 1.85;
}
.prose h2, .prose h3 { margin: 1.9em 0 0.55em; }
.prose h2:first-child, .prose h3:first-child { margin-top: 0; }
.prose ul, .prose ol { margin: 0 0 1.1em; padding-left: 1.25em; }
.prose li { margin-bottom: 0.45em; }
.prose--paper { color: #0A2233; }

/* ---------- grids ---------- */
.grid { display: grid; gap: clamp(1rem, 2.4vw, 2rem); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--sidebar { grid-template-columns: minmax(0, 1fr) minmax(0, 0.42fr); }
.stack { display: grid; gap: 1.25rem; }

/* ---------- media frame ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
  border-radius: 2px;
  aspect-ratio: 16 / 10;
  border: 1px solid rgba(168, 199, 209, 0.22);
  background-color: var(--ink-2);
  background-image:
    linear-gradient(135deg, rgba(15, 107, 115, 0.6) 0%, rgba(5, 26, 43, 0.94) 62%),
    radial-gradient(420px 260px at 78% 12%, rgba(45, 226, 197, 0.22), transparent 70%);
}
.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(45deg, rgba(168, 199, 209, 0.08) 0 1px, transparent 1px 9px);
}
.media-frame > img,
.media-frame > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--cut { clip-path: polygon(0 0, 100% 0, 100% calc(100% - 2.2rem), calc(100% - 2.2rem) 100%, 0 100%); }
.media-frame--paper { border-color: var(--shadow-paper); }

/* ---------- footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 8vw, 6rem);
}

.footer-band {
  position: relative;
  overflow: hidden;
  background: var(--orange);
  color: var(--ink);
}
.footer-band::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(115deg, rgba(5, 26, 43, 0.1) 0 12px, transparent 12px 27px);
}
.footer-band-inner {
  position: relative;
  z-index: 1;
  width: min(var(--shell), 100% - 3rem);
  margin-inline: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.9rem 1.5rem;
  padding: 0.9rem 0;
}
.footer-band-text {
  margin: 0;
  font-family: var(--font-narrow);
  font-weight: 800;
  font-size: clamp(0.94rem, 2vw, 1.12rem);
  letter-spacing: 0.045em;
}

.footer-inner {
  position: relative;
  background: var(--ink-2);
  border-top: 1px solid rgba(201, 183, 156, 0.3);
}
.footer-inner::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    repeating-linear-gradient(90deg, rgba(168, 199, 209, 0.05) 0 1px, transparent 1px 72px),
    radial-gradient(680px 320px at 92% 0%, rgba(45, 226, 197, 0.1), transparent 68%);
}
.foot-grid {
  position: relative;
  z-index: 1;
  width: min(var(--shell), 100% - 3rem);
  margin-inline: auto;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: 2rem;
  padding: clamp(2rem, 4vw, 3.1rem) 0 clamp(1.6rem, 3vw, 2.3rem);
}
.foot-col { min-width: 0; }
.foot-col--brand { padding-right: 0.5rem; }

.foot-index {
  display: block;
  margin-bottom: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  color: var(--cyan);
  opacity: 0.78;
}
.foot-brand {
  margin: 0 0 0.55rem;
  font-family: var(--font-narrow);
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: 0.09em;
  color: var(--paper);
}
.foot-note {
  margin: 0;
  max-width: 27ch;
  font-size: 0.85rem;
  line-height: 1.85;
  color: var(--mist);
}
.foot-title {
  margin: 0 0 1rem;
  font-family: var(--font-narrow);
  font-weight: 800;
  font-size: 0.76rem;
  letter-spacing: 0.24em;
  color: var(--paper);
}
.foot-list { list-style: none; display: grid; gap: 0.58rem; }
.foot-link {
  font-size: 0.88rem;
  color: var(--mist);
  text-decoration: none;
  transition: color 0.2s ease;
}
.foot-link:hover, .foot-link:focus-visible { color: var(--cyan); }

.foot-contact { list-style: none; display: grid; gap: 0.68rem; }
.foot-contact li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.6rem;
  align-items: baseline;
}
.foot-contact .k {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  color: var(--cyan);
  opacity: 0.82;
}
.foot-contact .v {
  font-size: 0.85rem;
  line-height: 1.7;
  color: var(--mist);
  word-break: break-word;
}

.foot-copy {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1rem;
  padding: 0.36rem 0.72rem;
  font: inherit;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--cyan);
  background: transparent;
  border: 1px dashed rgba(45, 226, 197, 0.5);
  border-radius: 2px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.foot-copy:hover, .foot-copy:focus-visible { background: rgba(45, 226, 197, 0.12); }
.foot-copy[data-copied] { color: var(--orange); border-color: var(--orange); }
.foot-copy-status {
  display: block;
  min-height: 1.1em;
  margin-top: 0.5rem;
  font-size: 0.72rem;
  color: var(--cyan);
}
.foot-meta {
  margin: 0.7rem 0 0;
  font-size: 0.74rem;
  line-height: 1.7;
  color: rgba(168, 199, 209, 0.78);
}

.footer-base {
  background: var(--ink-3);
  border-top: 1px solid rgba(168, 199, 209, 0.16);
}
.footer-base-inner {
  width: min(var(--shell), 100% - 3rem);
  margin-inline: auto;
  padding: 1.1rem 0 1.4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.55rem 1.6rem;
  font-size: 0.76rem;
  letter-spacing: 0.02em;
  color: var(--mist);
}
.foot-copyright { margin: 0; }
.foot-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 1.15rem;
}
.foot-legal a { color: var(--mist); text-decoration: none; }
.foot-legal a:hover, .foot-legal a:focus-visible { color: var(--cyan); }
.foot-icp {
  font-family: var(--font-mono);
  font-size: 0.71rem;
  color: #7FA0AB;
}

/* ---------- reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.55s ease, transform 0.55s cubic-bezier(0.2, 0.7, 0.3, 1);
  will-change: opacity, transform;
}
[data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- responsive ---------- */
@media (max-width: 1080px) {
  .nav-rail { gap: 1.1rem; }
  .nav-list { gap: 1rem; }
  .nav-list a { font-size: 0.82rem; }
  .foot-grid { grid-template-columns: 1.4fr 1fr 1fr; }
  .foot-col--brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .nav-toggle { display: inline-flex; }
  .nav-rail {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.7rem 1.5rem 1.6rem;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    background: var(--ink-2);
    border-top: 1px solid rgba(168, 199, 209, 0.2);
    border-bottom: 1px solid rgba(168, 199, 209, 0.24);
    box-shadow: 0 30px 50px -34px #000;
  }
  .site-header[data-open] .nav-rail { display: flex; }
  .nav-list { flex-direction: column; align-items: stretch; gap: 0; }
  .nav-list li { border-bottom: 1px solid rgba(168, 199, 209, 0.14); }
  .nav-list a { display: block; padding: 0.85rem 0; font-size: 1rem; color: var(--paper); }
  .nav-list a::after { display: none; }
  .nav-list a[aria-current="page"] { color: var(--cyan); }
  .nav-cta { margin-top: 1.1rem; justify-content: center; padding: 0.7rem 1rem; }
  .grid--2, .grid--3, .grid--sidebar { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 760px) {
  .foot-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.7rem 1.4rem; }
  .foot-col--brand { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
  .header-inner, .arena-shell, .foot-grid, .footer-base-inner, .footer-band-inner {
    width: min(var(--shell), 100% - 2rem);
  }
  .brand-tag { letter-spacing: 0.18em; }
  .foot-grid { grid-template-columns: minmax(0, 1fr); }
  .footer-base-inner { flex-direction: column; align-items: flex-start; }
  .media-frame { aspect-ratio: 4 / 3; }
  .media-frame--wide { aspect-ratio: 16 / 9; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .header-progress > span { transition: none; }
}