/* =========================================================
   Helix 02 page clone - styles
   Type system mirrors figure.ai:
     Display: PP Neue Machina (paid) -> Space Grotesk fallback
     Body:    Neue Haas Grot Text (paid) -> Inter fallback
   Colors mirror figure.ai brand tokens:
     --color-figure-black: #0c0c0c (off-black)
     --color-figure-white: #f6f6ef (warm off-white)
   ========================================================= */

/* If you have licensed copies of the original typefaces, drop the .woff2
   files into assets/fonts/ and these @font-face rules will pick them up.
   When the files are absent, the browser silently falls back to the next
   family in the stack (Space Grotesk / Inter). */
@font-face {
  font-family: 'pp-neue-machina-plain';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/pp-neue-machina-plain-regular.woff2') format('woff2');
}

@font-face {
  font-family: 'neue-haas-grot-text';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/neue-haas-grot-text-55-roman.woff2') format('woff2');
}

@font-face {
  font-family: 'neue-haas-grot-text';
  font-style: italic;
  font-weight: 400;
  font-display: swap;
  src: url('assets/fonts/neue-haas-grot-text-55-italic.woff2') format('woff2');
}

@font-face {
  font-family: 'neue-haas-grot-text';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('assets/fonts/neue-haas-grot-text-65-medium.woff2') format('woff2');
}

:root {
  /* Brand colors (matched to figure.ai tokens) */
  --color-figure-black: #0c0c0c;
  --color-figure-white: #f6f6ef;
  --color-black-alt:    #1d1d1d;
  --color-grey-2:       #2e2e2e;

  --bg:        var(--color-figure-black);
  --fg:        var(--color-figure-white);
  --fg-muted:  rgba(246, 246, 239, 0.66);
  --fg-faint:  rgba(246, 246, 239, 0.45);
  --line:      rgba(246, 246, 239, 0.10);
  --line-strong: rgba(246, 246, 239, 0.20);
  --media-bg:  #141414;
  --media-fg:  #d8d8d8;

  /* Font stacks: real face -> closest free webfont -> system fallback */
  --font-display: 'pp-neue-machina-plain', 'Space Grotesk',
                  ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
                  'Segoe UI', sans-serif;
  --font-body:    'neue-haas-grot-text', 'Inter',
                  ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
                  'Helvetica Neue', Helvetica, Arial, sans-serif;

  /* Content widths mirror figure.ai tokens (1rem = 10px there):
     --maxw-text  闁?96.5rem  text column (paragraphs, lists, h2 stack)
     --maxw-media 闁?96.5rem  videos / images, same width as text
     --maxw-wide  闁?118rem   used by nav, footer, dex grid */
  --maxw-text:  965px;
  --maxw-prose: 965px; /* legacy alias, kept in sync */
  --maxw-media: 965px;
  --maxw-wide:  1180px;
  --nav-h:      72px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
img, video { max-width: 100%; display: block; }
button { font-family: inherit; cursor: pointer; }

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

/* =========================================================
   Top Nav
   ========================================================= */
.topnav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  z-index: 100;
  background: transparent;
  transition: background 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  border-bottom: 1px solid transparent;
}

.topnav.scrolled {
  background: rgba(12, 12, 12, 0.78);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom-color: var(--line);
}

.nav-inner {
  max-width: var(--maxw-wide);
  height: 100%;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0;
  font-size: 18px;
  color: var(--fg);
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
}

.nav-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--fg);
  position: relative;
  padding: 6px 0;
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
  transition: opacity 0.2s ease;
}

.nav-links a:hover { opacity: 0.6; }

.nav-links a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -2px;
  height: 1px;
  background: currentColor;
}

.nav-toggle {
  display: none;
  background: none;
  border: 0;
  width: 32px;
  height: 32px;
  padding: 6px;
  flex-direction: column;
  justify-content: space-between;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--fg);
}

/* =========================================================
   Article container & shared prose
   ========================================================= */
.article {
  /* Hero is full-bleed and absorbs the nav offset internally,
     so the article itself does NOT need top padding. */
  padding-top: 0;
}

.section {
  padding: 48px 32px;
}

.prose {
  max-width: var(--maxw-text);
  margin: 0 auto;
}

.prose p,
.prose ul {
  font-family: var(--font-body);
  font-size: 19px;
  line-height: 1.6;
  letter-spacing: -0.01em;
  font-weight: 400;
  color: var(--fg);
  margin: 0 0 22px 0;
}

.prose p {
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
}

.prose strong {
  font-weight: 500;
  color: var(--fg);
}

.prose em { font-style: italic; }

.prose h2 {
  font-family: var(--font-body);
  font-size: clamp(27px, 3vw, 34px);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.015em;
  color: var(--fg);
  margin: 32px 0 24px 0;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}

.prose h3 {
  font-family: var(--font-body);
  font-size: clamp(26px, 2.4vw, 30px);
  font-weight: 500;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--fg);
  margin: 36px 0 16px 0;
}

.prose ul.bullets {
  padding-left: 22px;
  margin: 0 0 22px 0;
}

.prose ul.bullets li {
  margin: 0 0 14px 0;
  padding-left: 4px;
}

.prose ul.bullets li::marker {
  color: var(--fg-faint);
}

.inline-link {
  color: var(--fg);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  text-decoration-color: rgba(246, 246, 239, 0.5);
  transition: text-decoration-color 0.2s ease, opacity 0.2s ease;
}

.inline-link:hover {
  text-decoration-color: var(--fg);
  opacity: 0.85;
}

/* =========================================================
   Hero (cover video fills hero area, H1 overlaid at bottom)
   ========================================================= */
.hero {
  position: relative;
  min-height: 80vh;
  padding: 0;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: var(--media-bg);
}

.hero-cover {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: var(--media-bg);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(to bottom,
    rgba(12, 12, 12, 0.30) 0%,
    rgba(12, 12, 12, 0.10) 30%,
    rgba(12, 12, 12, 0.55) 70%,
    rgba(12, 12, 12, 0.95) 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  min-height: 80vh;
  max-width: var(--maxw-wide);
  margin: 0 auto;
  padding: calc(var(--nav-h) + 32px) 32px 64px 32px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.kicker {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0;
  font-weight: 400;
  color: var(--fg-muted);
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
  margin: 0 0 24px 0;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5.6vw, 64px);
  line-height: 1.02;
  letter-spacing: -0.015em;
  font-weight: 400;
  color: var(--fg);
  margin: 0 0 12px 0;
  font-feature-settings: "ss12" on;
  max-width: 920px;
}

.hero .subtitle {
  font-family: var(--font-body);
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.35;
  letter-spacing: -0.005em;
  color: var(--fg-muted);
  font-weight: 400;
  margin: 0 0 28px 0;
  max-width: 760px;
}

.date {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--fg-muted);
  letter-spacing: -0.005em;
  margin: 0;
}

/* =========================================================
   Media (videos / images / placeholders)
   ========================================================= */
.media {
  margin: 40px auto;
  max-width: var(--maxw-media);
  padding: 0;
}

.section > .media:last-child {
  margin-bottom: 0;
}

.section > .prose:first-child > h3:first-child {
  margin-top: 0;
}

.media-wide {
  /* kept as alias; figure.ai uses the same 96.5rem cap for all in-flow media */
  max-width: var(--maxw-media);
}

.media-box {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: var(--media-bg);
  color: var(--media-fg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  position: relative;
  overflow: hidden;
  border: 1px solid rgba(246, 246, 239, 0.06);
  border-radius: 2px;
  background-image:
    radial-gradient(circle at 20% 20%, rgba(246, 246, 239, 0.05), transparent 40%),
    radial-gradient(circle at 80% 80%, rgba(246, 246, 239, 0.03), transparent 40%);
}

.media-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(246, 246, 239, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(246, 246, 239, 0.035) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.media-label {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.16em;
  color: var(--fg);
  position: relative;
  z-index: 1;
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
}

.media-sub {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--fg-muted);
  letter-spacing: 0;
  position: relative;
  z-index: 1;
}

.media figcaption {
  margin-top: 16px;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.55;
  letter-spacing: -0.005em;
  color: var(--fg-muted);
  max-width: var(--maxw-prose);
  margin-left: auto;
  margin-right: auto;
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
}

/* Architecture diagram placeholder */
.arch-diagram {
  aspect-ratio: auto;
  padding: 56px 32px;
  flex-direction: column;
  gap: 14px;
  background: #0a0a0a;
  background-image:
    linear-gradient(rgba(246, 246, 239, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(246, 246, 239, 0.04) 1px, transparent 1px);
  background-size: 40px 40px;
}

.arch-row {
  display: flex;
  align-items: center;
  gap: 20px;
  border: 1px solid rgba(246, 246, 239, 0.20);
  background: rgba(246, 246, 239, 0.025);
  padding: 16px 24px;
  width: min(560px, 90%);
  border-radius: 2px;
}

.arch-tag {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--fg);
  font-size: 14px;
  width: 36px;
  flex: 0 0 36px;
  text-align: center;
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
}

.arch-desc {
  font-family: var(--font-body);
  font-size: 13px;
  color: rgba(246, 246, 239, 0.78);
  letter-spacing: -0.005em;
}

.arch-arrow {
  color: rgba(246, 246, 239, 0.4);
  font-size: 18px;
}

/* =========================================================
   Dexterity grid (4 tasks)
   ========================================================= */
.dex-grid {
  max-width: var(--maxw-media);
  margin: 24px auto 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 56px 40px;
}

.dex-item .media { margin: 0 0 20px 0; padding: 0; max-width: none; }

.dex-item h3 {
  font-family: var(--font-body);
  font-size: 22px;
  font-weight: 500;
  line-height: 1.25;
  margin: 0 0 12px 0;
  letter-spacing: -0.01em;
  color: var(--fg);
}

.dex-item p {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--fg-muted);
  margin: 0;
  text-align: justify;
  text-justify: inter-word;
  hyphens: auto;
}

/* =========================================================
   Newsletter
   ========================================================= */
.newsletter {
  background: var(--bg);
  color: var(--fg);
  padding: 80px 32px;
  margin-top: 64px;
  border-top: 1px solid var(--line);
}

.newsletter-inner {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.newsletter h3 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 36px);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.05;
  color: var(--fg);
  margin: 0 0 12px 0;
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
}

.newsletter p {
  font-family: var(--font-body);
  color: var(--fg-muted);
  margin: 0 0 28px 0;
  font-size: 15px;
  letter-spacing: -0.005em;
}

.newsletter-form {
  display: flex;
  gap: 0;
  max-width: 480px;
  margin: 0 auto;
  border-bottom: 1px solid var(--fg);
}

.newsletter-form input {
  flex: 1;
  background: transparent;
  border: 0;
  padding: 14px 4px;
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: -0.005em;
  color: var(--fg);
  outline: none;
}

.newsletter-form input::placeholder { color: var(--fg-faint); }

.newsletter-form button {
  background: transparent;
  border: 0;
  color: var(--fg);
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0;
  padding: 0 12px;
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
  transition: opacity 0.2s ease;
}

.newsletter-form button:hover { opacity: 0.7; }

/* =========================================================
   Contact form
   ========================================================= */
.contact {
  padding: 96px 32px;
  border-top: 1px solid var(--line);
}

.contact-inner {
  max-width: 640px;
  margin: 0 auto;
}

.contact h2 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5.4vw, 60px);
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.02;
  color: var(--fg);
  margin: 0 0 16px 0;
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
}

.contact-sub {
  font-family: var(--font-body);
  color: var(--fg-muted);
  margin: 0 0 40px 0;
  font-size: 15px;
  letter-spacing: -0.005em;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-form .row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.contact-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.contact-form span {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: 0.04em;
  font-weight: 400;
  color: var(--fg-muted);
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
}

.contact-form span i {
  color: #ff5b5b;
  font-style: normal;
  margin-left: 2px;
}

.contact-form input,
.contact-form textarea {
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: -0.005em;
  color: var(--fg);
  background: transparent;
  border: 0;
  border-bottom: 1px solid var(--fg);
  padding: 8px 2px 10px 2px;
  outline: none;
  resize: vertical;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-form input:focus,
.contact-form textarea:focus {
  box-shadow: 0 1px 0 0 rgba(246, 246, 239, 0.6);
}

.submit-btn {
  align-self: flex-start;
  background: var(--fg);
  color: var(--bg);
  border: 0;
  padding: 14px 36px;
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
  transition: opacity 0.2s ease, transform 0.05s ease;
}

.submit-btn:hover { opacity: 0.85; }
.submit-btn:active { transform: translateY(1px); }

.recaptcha-note {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--fg-faint);
  margin: 8px 0 0 0;
  line-height: 1.6;
  letter-spacing: -0.005em;
}

/* =========================================================
   Footer
   ========================================================= */
.footer {
  background: var(--bg);
  color: var(--fg);
  padding: 56px 32px 24px 32px;
  border-top: 1px solid var(--line);
}

.footer-inner {
  max-width: var(--maxw-wide);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}

.footer-brand .brand {
  color: var(--fg);
  font-size: 20px;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-links a {
  font-family: var(--font-display);
  font-size: 13px;
  letter-spacing: 0;
  font-weight: 400;
  color: rgba(246, 246, 239, 0.78);
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
  transition: color 0.2s ease;
}

.footer-links a:hover { color: var(--fg); }

.footer-bottom {
  max-width: var(--maxw-wide);
  margin: 0 auto;
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: -0.005em;
  color: var(--fg-faint);
}

.footer-bottom .legal {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 24px;
}

.footer-bottom .legal a {
  color: var(--fg-faint);
  transition: color 0.2s ease;
}

.footer-bottom .legal a:hover { color: var(--fg); }

/* =========================================================
   Toast
   ========================================================= */
.toast {
  position: fixed;
  left: 50%;
  bottom: 32px;
  transform: translate(-50%, 24px);
  background: var(--fg);
  color: var(--bg);
  padding: 12px 22px;
  border-radius: 999px;
  font-family: var(--font-body);
  font-size: 14px;
  letter-spacing: -0.005em;
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
}

.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* =========================================================
   FTP-1 project page additions
   ========================================================= */

/* Author + affiliation block (in hero) */
.author-list {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  color: var(--fg);
  letter-spacing: -0.005em;
  margin: 0 0 8px 0;
  max-width: 980px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 8px;
}
.author-list .author {
  display: inline-block;
}
.author-list .author a {
  color: inherit;
  text-decoration: none;
  transition: opacity 0.2s ease;
}
.author-list .author a:hover {
  opacity: 0.7;
}
.author-list .author:not(:last-child)::after {
  content: "\00B7";
  margin-left: 8px;
  color: var(--fg-faint);
}
.author-list sup {
  font-size: 0.72em;
  opacity: 0.85;
  margin-left: 1px;
  vertical-align: super;
  line-height: 0;
}
.affiliations {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.6;
  color: var(--fg-muted);
  letter-spacing: -0.005em;
  margin: 0 0 28px 0;
  max-width: 980px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 10px;
}
.affiliations .affiliation {
  display: inline-block;
}
.affiliations .affiliation:not(:last-child)::after {
  content: "\00B7";
  margin-left: 10px;
  color: var(--fg-faint);
}
.affiliations sup {
  font-size: 0.85em;
  opacity: 0.95;
  vertical-align: super;
  line-height: 0;
  margin-right: 1px;
}

/* CTA buttons row (in hero) */
.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 4px;
}
.cta-btn {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
  padding: 11px 22px;
  border: 1px solid rgba(246, 246, 239, 0.7);
  color: var(--fg);
  background: transparent;
  border-radius: 2px;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.cta-btn:hover {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}

/* Dataset stats 4-cell grid */
.stats-grid {
  max-width: var(--maxw-text);
  margin: 28px auto 32px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.stat-cell {
  background: var(--bg);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.stat-num {
  font-family: var(--font-display);
  font-size: clamp(28px, 3.4vw, 40px);
  font-weight: 400;
  line-height: 1;
  letter-spacing: -0.015em;
  color: var(--fg);
  font-feature-settings: "ss12" on;
}
.stat-num .stat-unit {
  font-size: 0.55em;
  color: var(--fg-muted);
  letter-spacing: 0;
  margin-left: 2px;
}
.stat-label {
  font-family: var(--font-body);
  font-size: 13px;
  line-height: 1.4;
  color: var(--fg-muted);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

/* Result tables */
.table-wrap {
  max-width: var(--maxw-text);
  margin: 12px auto 32px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 2px;
}
table.results {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: 15px;
  letter-spacing: -0.005em;
  color: var(--fg);
}
table.results th,
table.results td {
  padding: 11px 14px;
  text-align: right;
  border-bottom: 1px solid var(--line);
  white-space: nowrap;
}
table.results th:first-child,
table.results td:first-child {
  text-align: left;
  font-weight: 500;
}
table.results thead th {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 400;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-feature-settings: "ss12" on;
  color: var(--fg-muted);
  background: rgba(246, 246, 239, 0.025);
  border-bottom: 1px solid var(--line-strong);
}
table.results tbody tr:last-child td { border-bottom: 0; }
table.results td.best { font-weight: 600; color: var(--fg); }
table.results td.snd  { font-weight: 500; text-decoration: underline; text-decoration-color: rgba(246, 246, 239, 0.45); text-underline-offset: 3px; }
table.results tr.ours {
  background: rgba(246, 246, 239, 0.045);
}
table.results tr.ours td:first-child {
  border-left: 2px solid var(--fg);
  padding-left: 12px;
  font-weight: 600;
}

/* BibTeX citation block (replaces newsletter) */
.cite {
  padding: 88px 32px;
  border-top: 1px solid var(--line);
  background: var(--bg);
}
.cite-inner {
  max-width: var(--maxw-text);
  margin: 0 auto;
}
.cite-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0 0 20px 0;
}
.cite-head h3 {
  font-family: var(--font-display);
  font-size: clamp(28px, 3vw, 36px);
  font-weight: 400;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
  margin: 0;
  color: var(--fg);
}
.copy-btn {
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-feature-settings: "ss12" on;
  padding: 8px 16px;
  border: 1px solid rgba(246, 246, 239, 0.5);
  background: transparent;
  color: var(--fg);
  border-radius: 2px;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.copy-btn:hover {
  background: var(--fg);
  color: var(--bg);
  border-color: var(--fg);
}
pre.bibtex {
  font-family: ui-monospace, SFMono-Regular, 'JetBrains Mono', Menlo, Monaco, Consolas, monospace;
  font-size: 14px;
  line-height: 1.65;
  color: var(--fg);
  background: rgba(246, 246, 239, 0.04);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 22px 24px;
  margin: 0;
  overflow-x: auto;
  white-space: pre;
  letter-spacing: 0;
  tab-size: 2;
}

/* Override dex-grid to 3 columns for unseen-sensor task gallery */
.dex-grid {
  grid-template-columns: repeat(3, 1fr);
  gap: 48px 32px;
}

/* 2-column variant for the 4-card seen-sensor task grid */
.dex-grid.cols-2 {
  grid-template-columns: repeat(2, 1fr);
  gap: 48px 32px;
}
.real-demo-grid {
  grid-template-columns: repeat(2, 1fr);
}

.real-demo-grid .demo-wide {
  grid-column: 1 / -1;
}

.univtac-grid {
  gap: 28px 24px;
  margin-top: 28px;
  margin-bottom: 42px;
}

.univtac-grid .dex-item .media {
  margin-bottom: 10px;
}

.univtac-grid .dex-item h3 {
  font-size: 17px;
  margin-bottom: 0;
}

/* Image inside .media-box should fill cleanly */
img.media-box,
video.media-box {
  display: block;
  background: var(--media-bg);
}
video.media-box { object-fit: cover; }

/* Plain images inside <figure class="media"> should be flush */
.media > img {
  display: block;
  width: 100%;
  height: auto;
  background: var(--media-bg);
  border: 1px solid rgba(246, 246, 239, 0.06);
  border-radius: 2px;
}

/* =========================================================
   Responsive
   ========================================================= */
@media (max-width: 1080px) {
  .dex-grid { grid-template-columns: repeat(2, 1fr); gap: 40px 28px; }
  .univtac-grid { grid-template-columns: repeat(2, 1fr); gap: 24px 20px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 880px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-links.open {
    display: flex;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    padding: 8px 0;
  }
  .nav-links.open li { padding: 12px 32px; border-bottom: 1px solid var(--line); }
  .nav-links.open li:last-child { border-bottom: 0; }

  .dex-grid { grid-template-columns: 1fr; gap: 40px; }
  .univtac-grid { grid-template-columns: repeat(2, 1fr); gap: 20px 16px; }
  .univtac-grid .dex-item h3 { font-size: 15px; }

  .hero { min-height: 70vh; }
  .hero-inner { min-height: 70vh; padding: calc(var(--nav-h) + 24px) 24px 48px 24px; }
  .section { padding: 36px 24px; }
  .nav-inner { padding: 0 24px; }
  .media { padding: 0; }

  .author-list { font-size: 15px; }
  .affiliations { font-size: 13px; }
  .cta-row { gap: 8px; }
  .cta-btn { padding: 9px 16px; font-size: 12px; }

  table.results { font-size: 14px; }
  table.results th, table.results td { padding: 9px 10px; }

  .cite { padding: 64px 24px; }
  .cite-head { flex-direction: column; align-items: flex-start; gap: 12px; }
  pre.bibtex { font-size: 13px; padding: 18px; }

  .dex-item h3 { font-size: 20px; }
  .dex-item p { font-size: 15px; }
}

@media (max-width: 520px) {
  .prose p, .prose ul { font-size: 17px; }
  .prose h2 { font-size: 28px; }
  .prose h3 { font-size: 25px; }
  .footer { padding: 48px 24px 24px 24px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
  .stats-grid { grid-template-columns: 1fr; }
  .stat-cell { padding: 20px 18px; }
  pre.bibtex { font-size: 12px; }
  table.results { font-size: 13px; }
  table.results th, table.results td { padding: 8px 8px; }
}