:root {
  --ink: #182334;
  --ink-2: #2a3e55;
  --paper: #f4f5f6;
  --surface: rgba(255, 255, 255, 0.96);
  --surface-solid: #ffffff;
  --brand: #334e6f;
  --brand-deep: #20364f;
  --accent: #73808d;
  --accent-soft: #e8ebee;
  --signal: #15956f;
  --hairline: rgba(31, 45, 62, 0.13);
  --shadow-sm: 0 8px 24px rgba(31, 42, 55, 0.055);
  --shadow-lg: 0 18px 44px rgba(31, 42, 55, 0.1);
  --radius: 22px;
  --max: 1180px;
}

body {
  position: relative;
  color: var(--ink);
  background: #f5f6f7;
  font-family: Inter, "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont,
    "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

.submission-upload {
  margin-top: 24px;
  padding: 24px;
  border: 1px solid var(--hairline);
  border-radius: 18px;
  background: var(--surface-solid);
  box-shadow: var(--shadow-sm);
}

.submission-upload h3 {
  margin: 0 0 4px;
}

.submission-upload > p {
  margin: 0 0 18px;
  color: var(--muted);
}

.submission-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
}

.submission-file-button,
.submission-submit {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  border: 1px solid var(--brand);
  border-radius: 10px;
  font: inherit;
  font-weight: 760;
  cursor: pointer;
}

.submission-file-button {
  color: var(--brand-deep);
  background: #fff;
}

.submission-file-input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.submission-file-button:focus-within,
.submission-submit:focus-visible {
  outline: 3px solid rgba(51, 78, 111, 0.2);
  outline-offset: 2px;
}

.submission-submit {
  color: #fff;
  background: var(--brand);
}

.submission-file-button:hover,
.submission-submit:hover:not(:disabled) {
  transform: translateY(-1px);
}

.submission-submit:disabled {
  cursor: wait;
  opacity: 0.65;
}

.submission-file-name {
  flex: 1 1 220px;
  min-width: 0;
  overflow-wrap: anywhere;
  color: var(--muted);
  font-size: 14px;
}

.submission-progress {
  width: 100%;
  height: 10px;
  margin-top: 16px;
  accent-color: var(--signal);
}

.submission-message {
  min-height: 1.7em;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.submission-message.is-error {
  color: #b42318;
}

.submission-message.is-success {
  color: var(--signal);
  font-weight: 700;
}

@media (max-width: 620px) {
  .submission-upload {
    padding: 18px;
  }

  .submission-actions {
    align-items: stretch;
  }

  .submission-file-button,
  .submission-submit {
    width: 100%;
  }

  .submission-file-name {
    flex-basis: 100%;
  }
}

body::before {
  display: none;
}

::selection {
  color: #fff;
  background: var(--brand);
}

a {
  transition: color 180ms ease, opacity 180ms ease;
}

.scroll-progress {
  position: fixed;
  inset: 0 auto auto 0;
  z-index: 100;
  width: 100%;
  height: 3px;
  transform: scaleX(0);
  transform-origin: left center;
  background: var(--brand);
  pointer-events: none;
}

.top {
  position: absolute;
  inset: 0 0 auto;
  z-index: 5;
  max-width: var(--max);
  padding: 24px 28px;
}

.top a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 6px 13px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  color: var(--brand-deep);
  background: #ffffff;
  box-shadow: 0 5px 16px rgba(31, 42, 55, 0.05);
  font-weight: 750;
}

.top a::before {
  width: 6px;
  height: 6px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(51, 78, 111, 0.09);
  content: "";
}

.top a:hover {
  color: var(--brand);
  text-decoration: none;
}

.hero {
  position: relative;
  isolation: isolate;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: none;
  min-height: 720px;
  margin: 0;
  padding: 132px max(28px, calc((100vw - var(--max)) / 2)) 84px;
  overflow: hidden;
  text-align: center;
  background: #f8f9fa;
}

.hero::before {
  display: none;
}

.hero::after {
  display: none;
}

.hero > * {
  position: relative;
  z-index: 1;
  max-width: 900px;
}

.hero > .hero-visual {
  position: absolute;
  top: 158px;
  right: max(28px, calc((100vw - var(--max)) / 2));
  z-index: 0;
  width: 470px;
  max-width: none;
  padding: 16px;
  border: 1px solid rgba(35, 103, 209, 0.16);
  border-radius: 28px;
  background: linear-gradient(145deg, rgba(255,255,255,.82), rgba(232,242,255,.74));
  box-shadow: 0 32px 90px rgba(20, 62, 112, 0.16), inset 0 1px rgba(255,255,255,.92);
  backdrop-filter: blur(18px) saturate(130%);
  transform: perspective(900px) rotateY(-2deg) rotateX(1deg);
  transform-origin: center;
}

.hero-visual::before {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background-image: linear-gradient(rgba(35,103,209,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(35,103,209,.035) 1px, transparent 1px);
  background-size: 20px 20px;
  content: "";
  pointer-events: none;
}

.visual-header {
  position: relative;
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 1px 3px 7px;
  color: var(--brand-deep);
  font-size: 10px;
  font-weight: 820;
  letter-spacing: .12em;
}

.visual-header > span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(18,168,137,.12);
  animation: signal 2.2s ease-in-out infinite;
}

.visual-question {
  position: relative;
  margin: 0 3px 14px;
  color: var(--ink);
  font-size: 18px;
  font-weight: 790;
  letter-spacing: -.02em;
}

.cause-chain {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 24px 1fr 24px 1fr;
  align-items: center;
  gap: 5px;
}

.causal-step {
  min-width: 0;
  padding: 10px 8px 9px;
  border: 1px solid rgba(35,103,209,.13);
  border-radius: 14px;
  background: rgba(255,255,255,.72);
  text-align: center;
}

.causal-step strong {
  display: block;
  margin-bottom: 7px;
  color: var(--brand);
  font-size: 8px;
  letter-spacing: .1em;
}

.causal-step > span {
  display: block;
  min-height: 28px;
  margin-top: 7px;
  color: #526981;
  font-size: 9px;
  font-weight: 700;
  line-height: 1.35;
}

.physics-step { border-color: rgba(217,145,24,.22); }
.physics-step strong { color: #b66d08; }
.effect-step { border-color: rgba(18,168,137,.24); }
.effect-step strong { color: #0a8068; }

.chain-arrow {
  position: relative;
  height: 2px;
  background: linear-gradient(90deg, var(--brand), var(--accent));
}

.chain-arrow::after {
  position: absolute;
  top: -4px;
  right: -1px;
  border-width: 5px 0 5px 7px;
  border-style: solid;
  border-color: transparent transparent transparent var(--accent);
  content: "";
}

.mini-scene {
  position: relative;
  height: 94px;
  overflow: hidden;
  border-radius: 10px;
  background: linear-gradient(180deg, #eaf3fc 0 66%, #d4e2ef 67% 69%, #f7fafc 70%);
}

.mini-block,
.origin-block {
  position: absolute;
  bottom: 27px;
  width: 27px;
  height: 27px;
  border: 1px solid rgba(19,113,92,.3);
  border-radius: 6px;
  background: linear-gradient(135deg, #7fe0c8, var(--accent));
  box-shadow: 0 6px 12px rgba(18,128,105,.18), inset 4px 4px 7px rgba(255,255,255,.35);
}

.cause-scene .mini-block { right: 17px; }
.mini-gripper {
  position: absolute;
  top: 37px;
  left: 8px;
  width: 51px;
  height: 12px;
  border: 1px solid rgba(32,69,108,.2);
  border-radius: 999px;
  background: linear-gradient(180deg, #fff, #b7cbe0);
  transform: rotate(8deg);
}

.mini-gripper::before {
  position: absolute;
  top: -5px;
  left: -5px;
  width: 20px;
  height: 20px;
  border: 3px solid #d8e5f1;
  border-radius: 50%;
  background: var(--brand);
  content: "";
}

.mini-gripper i {
  position: absolute;
  top: -6px;
  right: -7px;
  width: 11px;
  height: 24px;
  border-top: 3px solid var(--ink-2);
  border-bottom: 3px solid var(--ink-2);
  border-radius: 4px;
  transform: rotate(90deg);
}

.force-arrow {
  position: absolute;
  top: 26px;
  right: 27px;
  color: var(--brand);
  font-size: 9px;
  font-weight: 850;
}
.force-arrow::after {
  display: block;
  width: 30px;
  height: 2px;
  margin-top: 2px;
  background: var(--brand);
  clip-path: polygon(0 35%, 78% 35%, 78% 0, 100% 50%, 78% 100%, 78% 65%, 0 65%);
  content: "";
  animation: force-pulse 1.8s ease-in-out infinite;
}

.physics-scene .mini-block { left: calc(50% - 13px); }
.motion-trail {
  position: absolute;
  left: 13px;
  bottom: 37px;
  width: 48px;
  height: 12px;
  border-top: 2px solid rgba(35,103,209,.22);
  border-bottom: 2px solid rgba(35,103,209,.12);
}
.force-vector {
  position: absolute;
  right: 8px;
  bottom: 31px;
  color: #b66d08;
  font-size: 8px;
  font-weight: 800;
}

.effect-scene .origin-block {
  left: 12px;
  opacity: .18;
  background: #7e96ad;
  box-shadow: none;
}
.effect-scene .mini-block {
  right: 10px;
  animation: block-move 2.8s cubic-bezier(.2,.75,.2,1) infinite;
}
.motion-path {
  position: absolute;
  right: 31px;
  bottom: 39px;
  left: 35px;
  border-top: 2px dashed rgba(18,168,137,.5);
}
.motion-path::after {
  position: absolute;
  top: -5px;
  right: -1px;
  border-width: 4px 0 4px 6px;
  border-style: solid;
  border-color: transparent transparent transparent var(--accent);
  content: "";
}

.counterfactual-row {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 38px 1fr;
  align-items: center;
  gap: 8px;
  margin-top: 13px;
}
.counterfactual-row > div {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 11px;
  border: 1px solid rgba(51,79,109,.12);
  border-radius: 10px;
  background: rgba(242,246,250,.85);
  color: #6c7d8e;
  font-size: 8px;
}
.counterfactual-row > div.active {
  border-color: rgba(18,168,137,.25);
  color: #08735f;
  background: rgba(226,248,242,.86);
}
.counterfactual-row b { letter-spacing: .08em; }
.counterfactual-row span { display: flex; align-items: center; gap: 6px; }
.counterfactual-row em {
  color: #8291a0;
  font-size: 8px;
  font-style: normal;
  font-weight: 850;
  text-align: center;
}
.still-block,
.moving-block {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: #91a1b0;
}
.moving-block { background: var(--accent); box-shadow: -5px 0 rgba(18,168,137,.12); }

.visual-explainer {
  position: relative;
  margin-top: 10px;
  padding: 8px 10px;
  border-radius: 9px;
  color: var(--brand-deep);
  background: rgba(35,103,209,.075);
  font-size: 9px;
  font-weight: 770;
  text-align: center;
  letter-spacing: .02em;
}

.kicker {
  display: inline-flex;
  width: fit-content;
  max-width: 100%;
  align-items: center;
  gap: 9px;
  padding: 7px 11px;
  border: 1px solid var(--hairline);
  border-radius: 999px;
  color: var(--brand);
  background: #ffffff;
  box-shadow: 0 5px 18px rgba(31, 42, 55, 0.05);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.kicker::before {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(51, 78, 111, 0.09);
  content: "";
}

h1 {
  width: min(800px, 100%);
  max-width: 800px !important;
  margin: 24px 0 18px;
  color: var(--ink);
  font-size: clamp(52px, 6.5vw, 88px);
  font-weight: 820;
  line-height: 0.97;
  letter-spacing: -0.055em;
}

.subtitle {
  width: min(900px, 100%);
  margin: 0;
  color: #415671;
  font-size: clamp(19px, 2vw, 25px);
  line-height: 1.48;
}

.meta {
  width: min(900px, 100%);
  color: #566a82;
  font-size: 13px;
  font-weight: 650;
  letter-spacing: 0.015em;
}

.partner-logos {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  align-items: center;
  width: min(760px, 100%);
  margin: 19px 0 2px;
  padding: 0 10px;
  gap: 18px;
}

.partner-logo {
  display: grid;
  grid-template-rows: 40px minmax(26px, auto);
  align-items: center;
  justify-content: center;
  height: 76px;
  padding: 4px 8px 6px;
  gap: 4px;
  border-bottom: 1px solid transparent;
  opacity: 0.86;
  transition: opacity 180ms ease, transform 180ms ease, border-color 180ms ease;
}

.partner-logo:hover {
  border-bottom-color: #a9b6c2;
  opacity: 1;
  transform: translateY(-2px);
}

.partner-logo img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 36px;
  object-fit: contain;
  justify-self: center;
}

.partner-name {
  align-self: start;
  color: #53667a;
  font-size: 11px;
  font-weight: 620;
  line-height: 1.25;
  text-align: center;
}

.partner-logo--xera img { max-width: 126px; max-height: 40px; }
.partner-logo--sysu img { max-width: 142px; max-height: 38px; }
.partner-logo--uts img { max-width: 150px; max-height: 35px; filter: brightness(0) saturate(100%); }
.partner-logo--hkust img { max-width: 132px; filter: brightness(0) saturate(100%); }

.prize-callout {
  width: min(720px, 100%);
  justify-content: center;
  margin: 16px 0 0;
  padding: 12px 15px;
  border: 1px solid rgba(221, 157, 35, 0.28);
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(255, 250, 236, 0.92), rgba(255, 255, 255, 0.82));
  box-shadow: 0 14px 35px rgba(114, 80, 10, 0.08);
  backdrop-filter: blur(12px);
}

.prize-breakdown {
  text-align: center;
}

.button-row {
  width: min(900px, 100%);
  justify-content: center;
  gap: 12px;
}

.button {
  min-height: 46px;
  gap: 8px;
  padding: 10px 17px;
  border-color: rgba(28, 76, 127, 0.16);
  border-radius: 12px;
  color: var(--brand-deep);
  background: #ffffff;
  box-shadow: 0 5px 16px rgba(31, 42, 55, 0.045);
  transition: transform 180ms ease, box-shadow 180ms ease, border-color 180ms ease;
}

.button-icon {
  flex: 0 0 auto;
  width: 19px;
  height: 19px;
}

.hf-icon {
  width: auto;
  font-size: 18px;
  line-height: 1;
}

.github-icon {
  display: block;
}

.button.primary {
  border-color: var(--brand);
  background: var(--brand-deep);
  box-shadow: 0 9px 20px rgba(34, 58, 94, 0.18);
}

.button:hover {
  transform: translateY(-2px);
  border-color: rgba(53, 82, 124, 0.4);
  box-shadow: 0 10px 22px rgba(31, 42, 55, 0.09);
}

.edition-scope {
  width: min(900px, 100%);
  align-items: center;
  margin: 22px 0 0;
  padding: 14px 16px;
  border: 1px solid var(--hairline);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.9);
  text-align: center;
}

.edition-scope strong {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  text-align: center;
}

.edition-scope strong::before {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-right: 8px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(51, 78, 111, 0.08);
  content: "";
}

.edition-scope span {
  display: block;
  width: 100%;
  text-align: center;
}

.top a::before,
.kicker::before,
.edition-scope strong::before {
  background: var(--signal);
  box-shadow: 0 0 0 4px rgba(21, 149, 111, 0.11);
}

.anchor-nav {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  z-index: 50;
  max-width: none;
  margin: 0;
  padding: 13px max(24px, calc((100vw - var(--max)) / 2));
  justify-content: center;
  gap: 5px;
  flex-wrap: nowrap;
  overflow-x: auto;
  border: 0;
  border-bottom: 1px solid var(--hairline);
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 5px 18px rgba(31, 42, 55, 0.045);
  scrollbar-width: none;
  backdrop-filter: blur(12px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-100%);
  transition: opacity 220ms ease, transform 260ms cubic-bezier(.22,.7,.2,1), visibility 220ms ease;
}

.anchor-nav.is-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(0);
}

.anchor-nav::-webkit-scrollbar { display: none; }

.anchor-nav a {
  position: relative;
  flex: 0 0 auto;
  padding: 7px 11px;
  border-radius: 9px;
  color: #53667c;
  font-size: 12px;
  letter-spacing: 0.01em;
  transition: color 180ms ease, background 180ms ease;
}

.anchor-nav a:hover,
.anchor-nav a.is-active {
  color: var(--brand-deep);
  background: rgba(53, 82, 124, 0.09);
  text-decoration: none;
}

.anchor-nav a.is-active::after {
  position: absolute;
  right: 11px;
  bottom: 2px;
  left: 11px;
  height: 2px;
  border-radius: 999px;
  background: var(--brand);
  content: "";
}

.wrap {
  max-width: var(--max);
  padding: 0 28px;
}

section {
  position: relative;
  padding: 92px 0;
  border: 0;
  scroll-margin-top: 60px;
}

section:nth-of-type(even)::before {
  position: absolute;
  inset: 18px max(14px, calc((100vw - 1280px) / 2));
  z-index: -1;
  border: 1px solid rgba(24, 62, 105, 0.08);
  border-radius: 34px;
  background: rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-sm);
  content: "";
}

h2 {
  position: relative;
  margin-bottom: 20px;
  color: var(--ink);
  font-size: clamp(30px, 4vw, 46px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.035em;
}

h2::before {
  display: block;
  width: 34px;
  height: 4px;
  margin-bottom: 15px;
  border-radius: 999px;
  background: var(--accent);
  content: "";
}

h3 { color: var(--ink); }
p { color: #586b81; }
.lead {
  max-width: 900px;
  color: #324a65;
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.65;
}

.stats {
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 14px;
  margin-top: 34px;
}

.stat,
.track,
.sample,
.teaser,
.figure-block,
.table-wrap,
.note,
.code-block {
  border-color: var(--hairline);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.stat {
  position: relative;
  min-height: 138px;
  padding: 24px 18px;
  overflow: hidden;
  text-align: left;
  transition: transform 240ms ease, box-shadow 240ms ease;
}

.stat::after {
  display: none;
}

.stat strong {
  margin-bottom: 13px;
  color: var(--brand-deep);
  font-size: 38px;
  letter-spacing: -0.04em;
}

.stat:hover,
.track:hover,
.sample:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.track-grid { gap: 18px; margin-top: 28px; }
.track {
  min-height: 250px;
  padding: 26px;
  transition: transform 240ms ease, box-shadow 240ms ease, border-color 240ms ease;
}
.track.active {
  border-color: rgba(53, 82, 124, 0.32);
  background: #f8f9fa;
  box-shadow: 0 12px 30px rgba(31, 42, 55, 0.07);
}
.track.future { background: rgba(241, 244, 248, 0.78); }
.track-status { padding: 5px 10px; }

.two-col { gap: 38px; }
.note {
  padding: 22px 24px;
  border: 1px solid var(--hairline);
  border-left: 4px solid var(--brand);
  background: #f8f9fa;
}

.figure-block {
  position: relative;
  margin-top: 34px;
  overflow: hidden;
  background: #eef0f2;
  contain: paint;
  transform: translateZ(0);
}

.figure-block::after {
  position: absolute;
  inset: 0 0 auto;
  height: 34%;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.18), transparent);
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity 420ms ease;
}

.figure-block:hover::after { opacity: 1; }

.figure-block img {
  opacity: 1;
  transform: translate3d(0, 0, 0);
}

.figure-block img.image-entering {
  opacity: 0;
  transform: translate3d(0, 14px, 0);
  will-change: opacity, transform;
}

.figure-block img.image-entering.image-loaded {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  transition: opacity 620ms cubic-bezier(.22,.7,.2,1),
    transform 760ms cubic-bezier(.22,.7,.2,1);
}
.figure-block figcaption { padding: 14px 18px; background: #fff; }

.sample-grid { gap: 20px; margin-top: 22px; }
.sample {
  border-radius: var(--radius);
  transition: transform 240ms ease, box-shadow 240ms ease;
}
.sample video { aspect-ratio: 16 / 10; }
.sample video,
.sample video[poster] {
  transform: translateZ(0);
  backface-visibility: hidden;
}
.sample-body { padding: 18px 20px 22px; }

.gallery-pager button {
  border-color: var(--hairline);
  border-radius: 10px;
  transition: transform 180ms ease, background 180ms ease;
}
.gallery-pager button:not(:disabled):hover { transform: translateY(-2px); }
.gallery-pager button.is-active { border-color: var(--brand); background: var(--brand); }

.table-wrap { overflow: auto; }
th { color: var(--ink-2); background: #edf3fa; }
th, td { padding: 16px 18px; border-color: var(--hairline); }
tbody tr { transition: background 160ms ease; }
tbody tr:hover { background: rgba(35, 103, 209, 0.035); }

.table-wrap td .track-status {
  float: none;
  display: inline-block;
  vertical-align: middle;
}

.code-block {
  padding: 20px;
  background: linear-gradient(145deg, #0a1b31, #12365d);
  box-shadow: 0 20px 46px rgba(8, 27, 49, 0.2);
}

#submission .code-block {
  margin: 13px 0 28px;
  padding: 18px 20px;
  border: 1px solid #bdcad4;
  border-radius: 10px;
  background: #f1f5f7;
  color: #173149;
  box-shadow: 0 6px 16px rgba(32, 55, 75, 0.065);
  line-height: 1.65;
}

#submission .code-block + p {
  margin-top: 2px;
}

#submission .code-block:last-child {
  margin-bottom: 0;
}

footer {
  max-width: none;
  padding: 50px 28px;
  border-top: 1px solid var(--hairline);
  background: #e9ecef;
  color: #65778b;
}

.reveal-ready {
  opacity: 0;
  transform: translate3d(0, 16px, 0);
  transition: opacity 520ms cubic-bezier(.22,.7,.2,1),
    transform 600ms cubic-bezier(.22,.7,.2,1);
  will-change: opacity, transform;
}

.reveal-ready.is-visible {
  opacity: 1;
  transform: translate3d(0, 0, 0);
  will-change: auto;
}

@keyframes orbit { to { transform: rotate(360deg); } }
@keyframes pulse {
  0%, 100% { transform: scale(.9); opacity: .75; }
  50% { transform: scale(1.1); opacity: 1; }
}
@keyframes signal { 50% { opacity: .5; box-shadow: 0 0 0 9px rgba(18,168,137,0); } }
@keyframes action-flow { 45%, 100% { transform: translateX(100%); } }
@keyframes effect {
  0% { transform: scale(.55); opacity: .8; }
  100% { transform: scale(1.45); opacity: 0; }
}
@keyframes object-settle {
  0%, 100% { transform: translateY(0) rotate(16deg); }
  45% { transform: translateY(-4px) rotate(11deg); }
}
@keyframes force-pulse {
  0%, 100% { transform: translateX(-3px); opacity: .55; }
  50% { transform: translateX(4px); opacity: 1; }
}
@keyframes block-move {
  0%, 15% { transform: translateX(-48px); }
  55%, 100% { transform: translateX(0); }
}

@media (max-width: 1040px) {
  .hero { min-height: auto; padding-right: max(28px, calc((100vw - var(--max)) / 2)); }
  .hero::before { right: -160px; opacity: .5; }
  .hero > * { max-width: 760px; }
  .hero > .hero-visual { display: none; }
  .stats { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  .hero { padding-top: 112px; padding-bottom: 68px; }
  .anchor-nav { justify-content: flex-start; }
  section { padding: 68px 0; }
  section:nth-of-type(even)::before { inset: 10px 8px; border-radius: 26px; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .stat { text-align: left; }
  .two-col { gap: 24px; }
}

@media (max-width: 620px) {
  .top { padding: 18px 20px; justify-content: flex-end; }
  .hero { padding: 104px 20px 58px; }
  .hero::before { top: 9%; right: -210px; width: 410px; }
  h1 { font-size: clamp(44px, 14vw, 62px); }
  .button-row { display: grid; grid-template-columns: 1fr 1fr; }
  .button { width: 100%; text-align: center; }
  .button.pending { grid-column: 1 / -1; }
  .partner-logos { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 18px; margin-top: 15px; }
  .partner-logo { grid-template-rows: 33px minmax(25px, auto); height: 68px; padding: 3px 6px 5px; }
  .partner-logo img { max-height: 30px; }
  .partner-name { font-size: 10px; }
  .anchor-nav { padding: 10px 14px; }
  .wrap { padding: 0 20px; }
  section { padding: 58px 0; }
  .stats { grid-template-columns: 1fr 1fr; gap: 10px; }
  .stat { min-height: 120px; padding: 19px 15px; }
  .stat strong { font-size: 32px; }
  .track { min-height: auto; padding: 21px; }
  .sample-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
  }
  .reveal-ready { opacity: 1; transform: none; }
}