:root {
  --bg: #090911;
  --bg-deep: #05060d;
  --bg-elevated: rgba(10, 12, 21, 0.82);
  --panel: rgba(13, 17, 29, 0.76);
  --panel-strong: rgba(11, 14, 24, 0.92);
  --panel-soft: rgba(15, 20, 34, 0.62);
  --panel-border: rgba(108, 137, 201, 0.18);
  --panel-border-strong: rgba(120, 155, 235, 0.28);
  --text: #eef3ff;
  --text-strong: #ffffff;
  --muted: #96a2bb;
  --muted-strong: #c9d4eb;
  --line: rgba(131, 160, 219, 0.16);
  --line-strong: rgba(146, 181, 255, 0.26);
  --primary: #08c8f7;
  --primary-strong: #61f3ff;
  --accent: #5a48ff;
  --danger: #c0392b;
  --surface-shadow:
    0 28px 90px rgba(0, 0, 0, 0.44),
    0 0 0 1px rgba(255, 255, 255, 0.02),
    inset 0 1px 0 rgba(255, 255, 255, 0.035);
  --surface-shadow-soft:
    0 18px 56px rgba(0, 0, 0, 0.34),
    0 0 0 1px rgba(255, 255, 255, 0.02),
    inset 0 1px 0 rgba(255, 255, 255, 0.03);
  --radius-xl: 34px;
  --radius-lg: 28px;
  --radius-md: 20px;
  --radius-sm: 16px;
  --max-width: 1248px;
  --content-width: 900px;
  --header-height: 84px;
  /* --grid-size: px; */
  --pointer-x: 36%;
  --pointer-y: 24%;
  --pointer-x-px: 36vw;
  --pointer-y-px: 24vh;
  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--text);
  font-family:
    "Alibaba PuHuiTi 3.0",
    "PingFang SC",
    "Microsoft YaHei",
    "Noto Sans SC",
    sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea,
select {
  font: inherit;
}

img,
video {
  display: block;
  max-width: 100%;
}

#app {
  position: relative;
  min-height: 100vh;
}

.site-shell {
  position: relative;
  min-height: 100vh;
  overflow: clip;
}

.site-shell > :not(.site-backdrop) {
  position: relative;
  z-index: 1;
}

.site-backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  background: #090911;
}

.site-backdrop-base,
.site-backdrop-grid,
.site-backdrop-glow,
.site-backdrop-cross,
.site-backdrop-vignette {
  position: absolute;
  inset: 0;
}

.site-backdrop-base {
  background:
    radial-gradient(circle at 18% 14%, rgba(90, 72, 255, 0.18), transparent 26%),
    radial-gradient(circle at 82% 16%, rgba(8, 200, 247, 0.12), transparent 20%),
    radial-gradient(circle at 50% 100%, rgba(4, 12, 32, 0.46), transparent 44%),
    linear-gradient(180deg, #0b0a10 0%, #090911 44%, #06070d 100%);
}

.site-backdrop-grid {
  inset: -8%;
  background-image:
    linear-gradient(rgba(31, 61, 122, 0.38) 1px, transparent 1px),
    linear-gradient(90deg, rgba(31, 61, 122, 0.38) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  opacity: 0.48;
}

.site-backdrop-grid-highlight {
  background-image:
    linear-gradient(rgba(5, 225, 253, 0.9) 1px, transparent 1px),
    linear-gradient(90deg, rgba(5, 225, 253, 0.9) 1px, transparent 1px);
  opacity: 0.82;
  mix-blend-mode: screen;
  -webkit-mask-image: radial-gradient(
    circle at var(--pointer-x) var(--pointer-y),
    rgba(0, 0, 0, 0.96) 0,
    rgba(0, 0, 0, 0.84) 12%,
    rgba(0, 0, 0, 0.32) 26%,
    transparent 42%
  );
  mask-image: radial-gradient(
    circle at var(--pointer-x) var(--pointer-y),
    rgba(0, 0, 0, 0.96) 0,
    rgba(0, 0, 0, 0.84) 12%,
    rgba(0, 0, 0, 0.32) 26%,
    transparent 42%
  );
}

.site-backdrop-glow {
  background:
    radial-gradient(
      circle at var(--pointer-x) var(--pointer-y),
      rgba(1, 224, 253, 0.3) 0,
      rgba(1, 224, 253, 0.16) 10%,
      rgba(90, 72, 255, 0.14) 24%,
      transparent 38%
    ),
    radial-gradient(
      circle at calc(var(--pointer-x) - 18%) calc(var(--pointer-y) + 10%),
      rgba(93, 120, 255, 0.14) 0,
      transparent 34%
    );
  filter: blur(18px);
  mix-blend-mode: screen;
}

.site-backdrop-cross {
  display: none;
}

.site-backdrop-cross-x {
  left: var(--pointer-x-px);
  right: auto;
  width: 1px;
  background: linear-gradient(
    180deg,
    transparent 0,
    rgba(8, 200, 247, 0.08) 12%,
    rgba(8, 200, 247, 0.8) 34%,
    rgba(8, 200, 247, 0.14) 62%,
    transparent 100%
  );
  box-shadow:
    0 0 38px rgba(8, 200, 247, 0.42),
    0 0 120px rgba(8, 200, 247, 0.16);
  opacity: 0.5;
}

.site-backdrop-cross-y {
  top: var(--pointer-y-px);
  bottom: auto;
  height: 1px;
  background: linear-gradient(
    90deg,
    transparent 0,
    rgba(8, 200, 247, 0.06) 14%,
    rgba(8, 200, 247, 0.78) 38%,
    rgba(8, 200, 247, 0.16) 62%,
    transparent 100%
  );
  box-shadow:
    0 0 38px rgba(8, 200, 247, 0.3),
    0 0 100px rgba(8, 200, 247, 0.12);
  opacity: 0.34;
}

.site-backdrop-vignette {
  background:
    radial-gradient(circle at 50% -8%, transparent 0, rgba(4, 6, 12, 0.18) 44%, rgba(4, 6, 12, 0.7) 100%),
    radial-gradient(circle at 50% 108%, transparent 0, rgba(4, 6, 12, 0.18) 42%, rgba(4, 6, 12, 0.76) 100%);
  box-shadow:
    inset 0 0 240px rgba(4, 6, 12, 0.92),
    inset 0 0 100px rgba(4, 6, 12, 0.86);
}

.section-shell,
.header-shell,
.footer-shell {
  width: min(100% - 48px, var(--max-width));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  border-bottom: 1px solid transparent;
  background: linear-gradient(180deg, rgba(11, 10, 16, 0.88), rgba(11, 10, 16, 0.18) 86%, transparent);
  backdrop-filter: blur(20px);
  transition:
    background 220ms ease,
    border-color 220ms ease,
    box-shadow 220ms ease;
}

.site-header.is-scrolled {
  background: linear-gradient(180deg, rgba(8, 9, 15, 0.94), rgba(8, 9, 15, 0.82));
  border-color: rgba(107, 138, 206, 0.12);
  box-shadow: 0 16px 42px rgba(0, 0, 0, 0.32);
}

.header-shell {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 24px;
  min-height: var(--header-height);
}

.header-shell.is-brand-only {
  grid-template-columns: 1fr;
  gap: 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  min-width: 0;
  justify-self: start;
}

.brand-logo {
  display: block;
  width: auto;
  height: 36px;
  object-fit: contain;
}

.brand-name {
  margin: 0;
  color: var(--text-strong);
  font-size: 1.04rem;
  font-weight: 650;
  letter-spacing: 0.015em;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: center;
  justify-self: center;
  gap: var(--nav-gap, 44px);
  flex-wrap: wrap;
}

.nav-link {
  position: relative;
  padding: 10px 0;
  color: rgba(233, 239, 255, 0.56);
  font-size: 0.98rem;
  font-weight: 420;
  letter-spacing: 0.01em;
  transition:
    color 180ms ease,
    transform 180ms ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 24px;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #5a48ff, #07c8f8);
  box-shadow: 0 0 18px rgba(8, 200, 247, 0.34);
  transform: translateX(-50%) scaleX(0);
  transform-origin: center;
  transition: transform 180ms ease;
}

.nav-link:hover,
.nav-link:focus-visible,
.nav-link.is-active {
  color: var(--text-strong);
  transform: translateY(-1px);
}

.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link.is-active::after {
  transform: translateX(-50%) scaleX(1);
}

.header-meta {
  justify-self: end;
  color: var(--muted);
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}

main {
  position: relative;
  z-index: 1;
}

.hero {
  padding: 104px 0 52px;
}

.hero-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  text-align: center;
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  color: var(--muted-strong);
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.04em;
}

.hero-title {
  margin: 0;
  max-width: none;
  font-size: clamp(2.6rem, 7.2vw, 4.8rem);
  line-height: 0.94;
  letter-spacing: -0.055em;
}

.hero-title.has-image {
  line-height: 0;
  letter-spacing: 0;
}

.hero-title-image {
  display: block;
  width: min(100%, clamp(280px, 56vw, 560px));
  height: auto;
  object-fit: contain;
  margin: 0 auto;
}

.hero-title-accent {
  color: rgb(192, 0, 0);
  text-shadow: 0 0 24px rgba(192, 0, 0, 0.14);
}

.hero-title-rest {
  color: var(--text-strong);
}

.hero-subtitle {
  margin: 0;
  max-width: 48rem;
  color: var(--muted-strong);
  font-size: clamp(1rem, 1.5vw, 1.22rem);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 6px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 13px 24px;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 500;
  transition:
    transform 180ms ease,
    box-shadow 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    color 180ms ease;
}

.btn:hover,
.btn:focus-visible {
  transform: translateY(-1px);
}

.btn-pill {
  background: linear-gradient(180deg, rgba(18, 23, 38, 0.86), rgba(10, 13, 22, 0.92));
  border-color: rgba(112, 140, 210, 0.22);
  color: #edf5ff;
  box-shadow:
    0 14px 34px rgba(0, 0, 0, 0.26),
    inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.btn-pill:hover,
.btn-pill:focus-visible {
  border-color: rgba(8, 200, 247, 0.34);
  box-shadow:
    0 18px 42px rgba(0, 0, 0, 0.32),
    0 0 0 1px rgba(8, 200, 247, 0.12),
    inset 0 0 36px rgba(8, 200, 247, 0.08);
}

.hero-media {
  position: relative;
  width: min(100%, var(--content-width));
  margin-top: 34px;
}

.hero-description {
  width: min(100%, var(--content-width));
  color: var(--muted-strong);
  font-size: 1rem;
  line-height: 1.9;
  text-align: left;
}

.hero-description strong {
  color: var(--text-strong);
  font-weight: 700;
}

.hero-video-shell {
  position: relative;
  overflow: hidden;
  border-radius: 30px;
  background: #020306;
  aspect-ratio: 16 / 9;
  border: 1px solid rgba(112, 140, 210, 0.18);
  box-shadow: var(--surface-shadow);
}

.hero-video-shell.has-image {
  aspect-ratio: auto;
  background: #f7fbff;
}

.hero-video-shell::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.06), transparent 24%),
    linear-gradient(135deg, rgba(90, 72, 255, 0.12), transparent 34%);
  pointer-events: none;
}

.hero-video-shell.has-image::after {
  display: none;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-video.media-image {
  height: auto;
  object-fit: contain;
}

.media-image {
  display: block;
  width: 100%;
  height: 100%;
}

.section {
  padding: 80px 0;
}

.section-header {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 30px;
}

.section-header.is-centered {
  align-items: center;
  margin-bottom: 44px;
  text-align: center;
}

.section-title {
  margin: 0;
  color: var(--text-strong);
  font-size: clamp(1.2rem, 3.4vw, 2.3rem);
  line-height: 0.98;
  letter-spacing: -0.05em;
}

.section-description {
  margin: 0;
  max-width: 50rem;
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.85;
}

.section-header.is-centered .section-description {
  max-width: 72rem;
}

.citation-section .section-shell,
.videos-section .section-shell,
.simulation-section .section-shell,
.benchmark-section .section-shell,
.technology-blocks-section .section-shell {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.citation-wrap,
.technology-block-stack,
.benchmark-chart-stack {
  width: min(100%, var(--content-width));
}

.simulation-section .section-header,
.videos-section .section-header,
.citation-section .section-header,
.benchmark-section .section-header,
.technology-blocks-section .section-header {
  width: min(100%, var(--content-width));
  align-items: flex-start;
  text-align: left;
}

.simulation-section .section-header.is-centered,
.videos-section .section-header.is-centered,
.citation-section .section-header.is-centered,
.benchmark-section .section-header.is-centered,
.technology-blocks-section .section-header.is-centered {
  align-items: flex-start;
  text-align: left;
}

.simulation-section .section-header .section-description,
.videos-section .section-header .section-description,
.citation-section .section-header .section-description,
.benchmark-section .section-header .section-description,
.technology-blocks-section .section-header .section-description {
  width: 100%;
  max-width: var(--content-width);
  text-align: left;
}

.benchmark-section {
  padding-top: 84px;
}

.benchmark-section.is-after-simulation {
  padding-top: 44px;
}

.technology-block-stack {
  display: grid;
  gap: 74px;
  margin: 0 auto;
}

.technology-block-item {
  width: 100%;
}

.technology-block-title {
  margin: 0 0 16px;
  color: var(--text-strong);
  font-size: clamp(1.7rem, 3vw, 2.34rem);
  font-weight: 700;
  text-align: left;
  letter-spacing: -0.035em;
}

.technology-block-description {
  margin: 0 0 28px;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.88;
  text-align: left;
}

.technology-block-media {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  padding: 0;
  overflow: visible;
  background: transparent;
}

.technology-block-image {
  width: 100%;
  height: auto;
  border-radius: 28px;
  border: 1px solid rgba(112, 140, 210, 0.18);
  background: #fbfcff;
  box-shadow: var(--surface-shadow);
}

.card,
.benchmark-figure,
.simulation-panel,
.videos-panel,
.citation-card {
  background: linear-gradient(180deg, rgba(16, 20, 34, 0.88), rgba(10, 13, 22, 0.94));
  border: 1px solid var(--panel-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--surface-shadow);
  backdrop-filter: blur(18px);
}

.simulation-panel,
.videos-panel {
  width: min(100%, var(--content-width));
  padding: 34px 36px 36px;
}

.benchmark-chart-stack {
  display: grid;
  gap: 34px;
  margin: 0 auto;
  justify-items: stretch;
}

.benchmark-figure {
  margin: 0;
  padding: 26px 30px 22px;
  width: 100%;
  display: flex;
  flex-direction: column;
}

.benchmark-figure-frame {
  overflow-x: auto;
  overflow-y: hidden;
}

.benchmark-chart-stack .benchmark-figure-frame,
.simulation-benchmark-figure .benchmark-figure-frame {
  overflow: hidden;
}

.benchmark-svg {
  display: block;
  width: 100%;
  min-width: 980px;
  height: auto;
}

.benchmark-chart-stack .benchmark-svg,
.simulation-benchmark-figure .benchmark-svg {
  min-width: 0;
}

.benchmark-grid-line {
  stroke: rgba(211, 223, 255, 0.16);
  stroke-width: 1.2;
  stroke-dasharray: 6 6;
}

.benchmark-axis-line {
  stroke: rgba(224, 233, 255, 0.52);
  stroke-width: 1.55;
}

.benchmark-separator-line {
  stroke: rgba(211, 223, 255, 0.28);
  stroke-width: 1.4;
  stroke-dasharray: 6 6;
}

.benchmark-axis-value,
.benchmark-category-label,
.benchmark-legend-label,
.benchmark-bar-value {
  fill: #d7e1fb;
  font-family:
    "Alibaba PuHuiTi 3.0",
    "PingFang SC",
    "Microsoft YaHei",
    "Noto Sans SC",
    sans-serif;
  font-variant-numeric: tabular-nums;
}

.benchmark-axis-value {
  font-size: 0.9rem;
}

.benchmark-category-label {
  font-size: 0.9rem;
}

.benchmark-category-label.is-angled {
  font-size: 0.86rem;
}

.benchmark-y-label {
  fill: #f7faff;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.benchmark-bar-value {
  font-size: 0.78rem;
}

.benchmark-legend-label {
  font-size: 0.96rem;
  dominant-baseline: middle;
}

.benchmark-group-line {
  stroke: rgba(218, 228, 255, 0.52);
  stroke-width: 1.25;
}

.benchmark-group-label {
  fill: #f0f4ff;
  font-size: 0.95rem;
  font-weight: 600;
}

.benchmark-caption {
  order: -1;
  display: block;
  margin: 0 0 18px;
  color: var(--text-strong);
  font-size: 1rem;
  line-height: 1.6;
  text-align: center;
}

.benchmark-caption-index {
  display: none;
}

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 22px;
}

.tabs-centered {
  justify-content: center;
}

.tab-trigger {
  padding: 12px 18px;
  border-radius: 999px;
  border: 1px solid rgba(132, 160, 220, 0.16);
  background: rgba(11, 15, 26, 0.64);
  color: var(--muted);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.03),
    0 12px 28px rgba(0, 0, 0, 0.18);
  transition:
    transform 180ms ease,
    background 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    color 180ms ease;
}

.tab-trigger:hover,
.tab-trigger:focus-visible {
  transform: translateY(-1px);
  color: var(--text-strong);
  border-color: rgba(8, 200, 247, 0.24);
}

.tab-trigger.is-active {
  background: linear-gradient(180deg, rgba(20, 28, 47, 0.94), rgba(13, 18, 30, 0.98));
  border-color: rgba(110, 146, 242, 0.34);
  color: #dff7ff;
  box-shadow:
    0 0 0 1px rgba(8, 200, 247, 0.1),
    0 18px 42px rgba(0, 0, 0, 0.28),
    inset 0 0 42px rgba(8, 200, 247, 0.08);
}

.tab-panel[hidden] {
  display: none;
}

.benchmark-section .tab-panel:not([hidden]),
.simulation-section .tab-panel:not([hidden]),
.videos-section .tab-panel:not([hidden]) {
  width: 100%;
  display: flex;
  justify-content: center;
}

.feature-media-section .section-shell {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.feature-media-section .section-header {
  width: min(100%, var(--content-width));
  align-items: flex-start;
  text-align: left;
}

.feature-media-section .section-header.is-centered {
  align-items: flex-start;
  text-align: left;
}

.feature-media-section .section-header .section-description {
  width: 100%;
  max-width: var(--content-width);
  text-align: left;
}

.chart-card-head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 14px;
}

.chart-card-head h3 {
  margin: 0;
  color: var(--text-strong);
  font-size: 1.18rem;
}

.chart-card-head p {
  margin: 0;
  color: var(--muted);
  line-height: 1.8;
}

.simulation-panel-head {
  align-items: center;
  margin-bottom: 28px;
  text-align: center;
}

.simulation-panel-head h3 {
  font-size: clamp(1.9rem, 3vw, 2.15rem);
}

.simulation-panel-head p {
  max-width: 58rem;
}

.simulation-figures {
  display: grid;
  gap: 22px;
}

.simulation-benchmark-figure {
  overflow: visible;
  width: 100%;
  background: transparent;
  border: 0;
}

.videos-section .section-header {
  margin-bottom: 28px;
}

.video-pair-shell {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  overflow: hidden;
  border-radius: 28px;
  border: 1px solid rgba(112, 140, 210, 0.16);
  background: rgba(5, 7, 12, 0.94);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.03),
    0 14px 34px rgba(0, 0, 0, 0.18);
}

.video-pair-view {
  margin: 0;
  min-width: 0;
  position: relative;
}

.video-pair-view + .video-pair-view {
  border-left: 1px solid rgba(255, 255, 255, 0.08);
}

.video-pair-label {
  position: absolute;
  top: 14px;
  left: 14px;
  z-index: 2;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(9, 12, 20, 0.78);
  color: var(--text-strong);
  font-size: 0.84rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  backdrop-filter: blur(10px);
}

.video-pair-frame {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #040507;
}

.video-pair-player {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.video-single-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: 28px;
  border: 1px solid rgba(112, 140, 210, 0.16);
  background: #040507;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.03),
    0 14px 34px rgba(0, 0, 0, 0.18);
}

.video-single-player {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.citation-card {
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  backdrop-filter: none;
}

.citation-code {
  margin: 0;
  overflow-x: auto;
  padding: 22px 24px;
  border-radius: 20px;
  border: 1px solid rgba(112, 140, 210, 0.22);
  background: linear-gradient(180deg, rgba(17, 24, 41, 0.88), rgba(12, 17, 28, 0.94));
  color: #edf5ff;
  font-size: 0.92rem;
  line-height: 1.75;
  white-space: pre-wrap;
  word-break: break-word;
  box-shadow:
    0 0 0 1px rgba(8, 200, 247, 0.06),
    0 18px 40px rgba(0, 0, 0, 0.22);
}

.citation-link {
  display: inline-flex;
  max-width: 100%;
  align-items: center;
  padding: 14px 18px;
  border-radius: 16px;
  border: 1px solid rgba(112, 140, 210, 0.22);
  background: linear-gradient(180deg, rgba(17, 24, 41, 0.88), rgba(12, 17, 28, 0.94));
  color: #dff6ff;
  font-size: 0.98rem;
  font-weight: 600;
  line-height: 1.7;
  word-break: break-all;
  box-shadow:
    0 0 0 1px rgba(8, 200, 247, 0.06),
    0 18px 40px rgba(0, 0, 0, 0.22);
  transition:
    transform 180ms ease,
    border-color 180ms ease,
    background 180ms ease,
    box-shadow 180ms ease;
}

.citation-link:hover,
.citation-link:focus-visible {
  transform: translateY(-1px);
  border-color: rgba(8, 200, 247, 0.34);
  box-shadow:
    0 0 0 1px rgba(8, 200, 247, 0.12),
    0 20px 42px rgba(0, 0, 0, 0.26),
    inset 0 0 38px rgba(8, 200, 247, 0.06);
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 500ms ease,
    transform 500ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 900px) {
  .hero,
  .section {
    padding: 60px 0;
  }

  .section-header.is-centered {
    margin-bottom: 34px;
  }

  .header-shell {
    grid-template-columns: 1fr;
    justify-items: start;
    align-items: flex-start;
    padding: 14px 0;
  }

  .nav {
    justify-self: start;
    width: 100%;
    justify-content: flex-start;
    gap: 24px;
  }

  .benchmark-figure,
  .videos-panel,
  .simulation-panel,
  .citation-card {
    padding: 28px;
  }

  .header-meta {
    justify-self: start;
  }
}

@media (max-width: 680px) {
  :root {
    --header-height: 98px;
  }

  .section-shell,
  .header-shell,
  .footer-shell {
    width: min(100% - 24px, var(--max-width));
  }

  .hero-title {
    font-size: clamp(3.2rem, 16vw, 4.6rem);
    letter-spacing: -0.055em;
  }

  .btn {
    width: 100%;
  }

  .hero-actions {
    width: 100%;
  }

  .benchmark-svg {
    min-width: 860px;
  }

  .benchmark-figure,
  .videos-panel,
  .simulation-panel,
  .citation-card {
    padding: 22px;
    border-radius: 28px;
  }

  .video-pair-shell {
    grid-template-columns: 1fr;
  }

  .video-pair-view + .video-pair-view {
    border-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .hero-media {
    margin-top: 22px;
  }
}