/* ==========================================================================
   ICNGCI 2027 — Design system
   Visual language adapted from the MIT Department of Chemistry site:
   Roboto throughout, heavy display weights, squared geometry, white canvas,
   generous whitespace, saturated multi-hue accents used sparingly.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Tokens
   -------------------------------------------------------------------------- */
:root {
  --font-sans: "Roboto", -apple-system, BlinkMacSystemFont, "Segoe UI",
    "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* Neutrals */
  --ink: #0a0a0a;
  --ink-2: #2e2e2e;
  --muted: #616161;
  --muted-2: #8a8a8a;
  --line: #e3e3e3;
  --line-strong: #c9c9c9;
  --surface: #ffffff;
  --surface-2: #f4f4f4;
  --surface-3: #ebebeb;
  --inverse: #0a0a0a;

  /* Accents (MIT-Chemistry-style saturated palette) */
  --blue: #003bce;
  --blue-bright: #008bff;
  --violet: #2b00aa;
  --red: #ff2b37;
  --magenta: #d41e85;
  --orange: #d1600a;
  --cyan: #4ed5fd;
  --gold: #ffcd00;

  --primary: var(--blue);
  --accent: var(--red);

  /* Track colour coding */
  --t1: #003bce;
  --t2: #d41e85;
  --t3: #ff2b37;
  --t4: #008bff;
  --t5: #2b00aa;
  --t6: #d1600a;

  /* Layout */
  --wrap: 1240px;
  --wrap-narrow: 880px;
  --gutter: clamp(1.15rem, 4vw, 3rem);
  --masthead-h: 76px;

  /* Rhythm */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;
  --sp-7: 3rem;
  --sp-8: 4rem;
  --sp-9: clamp(2rem, 5vw, 3.5rem);

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 6px 28px rgba(0, 0, 0, 0.1);
  --focus: 3px solid var(--blue-bright);
}

/* --------------------------------------------------------------------------
   2. Reset / base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--masthead-h) + 1rem);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--ink-2);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

h1, h2, h3, h4, h5 {
  color: var(--ink);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.022em;
  margin: 0 0 var(--sp-4);
  text-wrap: balance;
}

h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.4vw, 2.75rem); }
h3 { font-size: clamp(1.2rem, 1.8vw, 1.5rem); letter-spacing: -0.015em; }
h4 { font-size: 1.0625rem; font-weight: 700; letter-spacing: -0.005em; }
h5 { font-size: 0.9375rem; font-weight: 700; letter-spacing: 0; }

p { margin: 0 0 var(--sp-4); max-width: 72ch; text-align: justify; text-justify: inter-word; }

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

:focus-visible {
  outline: var(--focus);
  outline-offset: 2px;
  border-radius: 2px;
}

ul, ol { margin: 0 0 var(--sp-4); padding-left: 1.25rem; }
li { margin-bottom: 0.35rem; }

hr {
  border: 0;
  border-top: 1px solid var(--line);
  margin: var(--sp-7) 0;
}

strong, b { color: var(--ink); font-weight: 700; }

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

/* --------------------------------------------------------------------------
   3. Layout helpers
   -------------------------------------------------------------------------- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.wrap--narrow { max-width: var(--wrap-narrow); }

.section { padding-block: var(--sp-9); }
/* Two sections on the same background stack their padding into one long blank
   band. Drop the second one's top padding so the seam matches every other. */
.section:not([class*="--"]) + .section:not([class*="--"]) { padding-top: 0; }
.section--tight { padding-block: clamp(2.5rem, 5vw, 4rem); }
.section--gray { background: var(--surface-2); }
.section--ink { background: var(--inverse); color: #d6d6d6; }
.section--ink h2,
.section--ink h3,
.section--ink h4 { color: #fff; }
.section--ink a { color: var(--cyan); }
.section--ink strong { color: #fff; }

.stack > * + * { margin-top: var(--sp-4); }

.grid { display: grid; gap: var(--sp-5); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr)); }
.grid--strict-2 { grid-template-columns: repeat(2, 1fr); }
@media (max-width: 768px) { .grid--strict-2 { grid-template-columns: 1fr; } }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(275px, 100%), 1fr)); }
.grid--4 { grid-template-columns: repeat(auto-fit, minmax(min(185px, 100%), 1fr)); }

.split {
  display: grid;
  gap: clamp(2rem, 5vw, 4.5rem);
  grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  align-items: start;
}
@media (max-width: 880px) { .split { grid-template-columns: minmax(0, 1fr); } }

/* Grid and flex children default to min-width:auto, which lets a wide child
   (a min-width table, a long unbroken string) push the track wider than the
   viewport. Pin them to 0 so overflow is handled inside the child instead. */
.grid > *,
.split > *,
.factstrip__grid > *,
.stats > *,
.logos > * { min-width: 0; }

.skip-link {
  position: absolute;
  left: -9999px;
  z-index: 999;
  background: var(--ink);
  color: #fff;
  padding: 0.75rem 1.25rem;
  font-weight: 700;
}
.skip-link:focus { left: 1rem; top: 1rem; color: #fff; }

/* --------------------------------------------------------------------------
   4. Typographic utilities
   -------------------------------------------------------------------------- */
.eyebrow {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--blue);
  margin: 0 0 var(--sp-3);
}
.eyebrow--muted { color: var(--muted); }
.eyebrow--light { color: var(--cyan); }

.lede {
  font-size: clamp(1.075rem, 1.6vw, 1.3rem);
  line-height: 1.55;
  color: var(--ink-2);
  font-weight: 400;
  max-width: 62ch;
}

.about-content h2,
.about-content p,
.about-content .lede,
#track-record .section-head,
#track-record h2,
#track-record .lede,
#track-record p.lede {
  max-width: none !important;
  width: 100%;
}

.small { font-size: 0.875rem; }
.muted { color: var(--muted); }

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

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  padding: 0.1em 0.35em;
  color: var(--ink);
}
.center { text-align: center; }
.mono { font-family: var(--font-mono); font-size: 0.9em; }
.nowrap { white-space: nowrap; }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
  padding-bottom: var(--sp-4);
  border-bottom: 2px solid var(--ink);
}
.section--ink .section-head { border-bottom-color: #3a3a3a; }
.section-head h2 { margin: 0; }
.section-head > div { min-width: 0; }

/* --------------------------------------------------------------------------
   5. Buttons & arrow links
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.8rem 1.5rem;
  font: inherit;
  font-size: 0.9375rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  line-height: 1.2;
  text-decoration: none;
  border: 2px solid var(--ink);
  background: var(--ink);
  color: #fff;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease,
    border-color 0.15s ease, transform 0.15s ease;
}
.btn:hover {
  background: var(--blue);
  border-color: var(--blue);
  color: #fff;
  transform: translateY(-1px);
}
.btn--accent { background: var(--red); border-color: var(--red); color: #fff; }
.btn--accent:hover { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn--ghost { background: transparent; color: var(--ink); }
.btn--ghost:hover { background: var(--ink); color: #fff; }
.btn--light { background: #fff; border-color: #fff; color: var(--ink); }
.btn--light:hover { background: var(--red); border-color: var(--red); color: #fff; }
.btn--outline-light { background: transparent; border-color: #fff; color: #fff; }
.btn--outline-light:hover { background: #fff; color: var(--ink); }
.btn--sm { padding: 0.55rem 1rem; font-size: 0.8125rem; }
.btn--block { width: 100%; }

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-5);
}

.arrow-link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 700;
  font-size: 0.9375rem;
  text-decoration: none;
  color: var(--blue);
  border-bottom: 2px solid transparent;
  padding-bottom: 2px;
}
.arrow-link::after { content: "→"; transition: transform 0.15s ease; }
.arrow-link:hover { color: var(--red); border-bottom-color: var(--red); }
.arrow-link:hover::after { transform: translateX(4px); }
.section--ink .arrow-link { color: var(--cyan); }
.section--ink .arrow-link:hover { color: #fff; border-bottom-color: #fff; }

/* --------------------------------------------------------------------------
   6. Top utility bar
   -------------------------------------------------------------------------- */
.topbar {
  background: var(--ink);
  color: #c7c7c7;
  font-size: 0.78125rem;
  letter-spacing: 0.01em;
}
.topbar__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  min-height: 52px;
  padding-block: 0.5rem;
}

/* Host lockup: Sharda mark + the organising school */
.hostmark {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
  flex-shrink: 0;
}
.hostmark img {
  height: 27px;
  width: auto;
  background: #fff;
  padding: 3px 7px;
  flex-shrink: 0;
}
.hostmark__dept {
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: #b9b9b9;
  line-height: 1.35;
  border-left: 1px solid #3a3a3a;
  padding-left: 0.7rem;
}
.hostmark:hover .hostmark__dept { color: #fff; }

.topbar__meta { margin: 0; max-width: none; color: #9d9d9d; }
.topbar__meta strong { color: #fff; letter-spacing: 0.05em; }
.topbar .dot { margin-inline: 0.55rem; opacity: 0.4; }
.topbar .dot::before { content: "•"; }

.topbar__aside { display: flex; align-items: center; gap: 1.5rem; flex-wrap: wrap; }
.topbar__pub { display: inline-flex; align-items: center; gap: 0.6rem; }
.topbar__pub-label {
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #8a8a8a;
  white-space: nowrap;
}
.topbar__pub img { height: 19px; width: auto; background: #fff; padding: 3px 7px; }

.topbar__links { display: flex; flex-wrap: wrap; gap: 1.15rem; }
.topbar__links a { color: #c7c7c7; text-decoration: none; font-weight: 500; }
.topbar__links a:hover { color: #fff; text-decoration: underline; }

@media (max-width: 1080px) { .topbar__meta { display: none; } }
@media (max-width: 900px) { .topbar__links { display: none; } }
@media (max-width: 620px) {
  .topbar__pub { display: none; }
  .hostmark__dept { font-size: 0.625rem; }
}
@media (max-width: 420px) { .hostmark__dept { display: none; } }

/* --------------------------------------------------------------------------
   7. Masthead + navigation
   -------------------------------------------------------------------------- */
.masthead {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--line);
  transition: box-shadow 0.2s ease;
}
.masthead.is-stuck { box-shadow: 0 2px 14px rgba(0, 0, 0, 0.09); }
.masthead__inner {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
  min-height: var(--masthead-h);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  text-decoration: none;
  color: var(--ink);
  flex-shrink: 0;
  margin-right: auto;
}
.brand__mark { width: 38px; height: 38px; flex-shrink: 0; }
.brand__name {
  font-size: 1.3125rem;
  font-weight: 900;
  letter-spacing: -0.03em;
  line-height: 1;
}
.brand__name span { color: var(--red); }
.brand__sub {
  display: block;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--muted);
  margin-top: 3px;
}

.mainnav__list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  list-style: none;
  margin: 0;
  padding: 0;
}
.mainnav__list > li { margin: 0; position: relative; }
.mainnav__link {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.55rem 0.7rem;
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--ink);
  text-decoration: none;
  background: none;
  border: 0;
  border-bottom: 3px solid transparent;
  font-family: inherit;
  cursor: pointer;
  white-space: nowrap;
}
.mainnav__link:hover { color: var(--blue); border-bottom-color: var(--blue); }
.mainnav__link[aria-current="page"],
.mainnav__link.is-active { color: var(--red); border-bottom-color: var(--red); }
.mainnav__link .caret {
  width: 8px;
  height: 8px;
  border-right: 2px solid currentColor;
  border-bottom: 2px solid currentColor;
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.15s ease;
}
.mainnav__link[aria-expanded="true"] .caret { transform: rotate(-135deg) translate(-3px, -3px); }

.submenu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 264px;
  background: #fff;
  border: 1px solid var(--line);
  border-top: 3px solid var(--blue);
  box-shadow: var(--shadow-md);
  list-style: none;
  margin: 0;
  padding: 0.4rem 0;
  display: none;
  z-index: 60;
}
.has-sub:hover > .submenu,
.has-sub.is-open > .submenu { display: block; }
.submenu li { margin: 0; }
.submenu a {
  display: block;
  padding: 0.55rem 1.1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink-2);
  text-decoration: none;
  border-left: 3px solid transparent;
}
.submenu a:hover {
  background: var(--surface-2);
  color: var(--blue);
  border-left-color: var(--red);
}

.masthead__actions { display: flex; align-items: center; gap: 0.6rem; flex-shrink: 0; }

.navtoggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.85rem;
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  background: none;
  border: 2px solid var(--ink);
  color: var(--ink);
  cursor: pointer;
}
.navtoggle__bars { display: grid; gap: 3px; width: 16px; }
.navtoggle__bars span { display: block; height: 2px; background: currentColor; }

@media (max-width: 1120px) {
  .mainnav {
    position: fixed;
    inset: calc(var(--masthead-h)) 0 0 auto;
    width: min(390px, 100%);
    background: #fff;
    border-left: 1px solid var(--line);
    overflow-y: auto;
    padding: var(--sp-4) 0 var(--sp-8);
    transform: translateX(100%);
    transition: transform 0.22s ease;
    box-shadow: var(--shadow-md);
    visibility: hidden;
  }
  .mainnav.is-open { transform: translateX(0); visibility: visible; }
  .mainnav__list { display: block; }
  .mainnav__list > li { border-bottom: 1px solid var(--line); }
  .mainnav__link {
    width: 100%;
    justify-content: space-between;
    padding: 0.95rem var(--gutter);
    font-size: 1rem;
    border-bottom: 0;
    border-left: 4px solid transparent;
  }
  .mainnav__link:hover,
  .mainnav__link.is-active { border-bottom: 0; border-left-color: var(--red); background: var(--surface-2); }
  .submenu {
    position: static;
    border: 0;
    box-shadow: none;
    background: var(--surface-2);
    padding: 0.25rem 0 0.6rem;
    min-width: 0;
  }
  .has-sub:hover > .submenu { display: none; }
  .has-sub.is-open > .submenu { display: block; }
  .submenu a { padding: 0.6rem var(--gutter) 0.6rem calc(var(--gutter) + 1rem); }
  .navtoggle { display: inline-flex; }
  .masthead__actions .btn { display: none; }
}
/* The brand block is flex-shrink:0, so its longest child sets a floor on the
   masthead width. Below ~620px the descriptor line alone is wider than a phone
   viewport and would push the whole page into horizontal scroll — drop it. */
@media (max-width: 620px) {
  .brand__sub { display: none; }
  .brand { min-width: 0; }
}
@media (max-width: 380px) {
  .brand__name { font-size: 1.125rem; }
  .brand__mark { width: 32px; height: 32px; }
  .navtoggle { font-size: 0; gap: 0; padding: 0.6rem 0.7rem; }
  .navtoggle__bars { width: 18px; }
}

.nav-scrim {
  position: fixed;
  inset: 0;
  background: rgba(10, 10, 10, 0.45);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease;
  z-index: 90;
}
.nav-scrim.is-open { opacity: 1; visibility: visible; }
body.nav-locked { overflow: hidden; }

/* --------------------------------------------------------------------------
   8. Rotating Flags Banner (International Participating Countries)
   -------------------------------------------------------------------------- */
.flags-banner {
  background: rgba(3, 10, 26, 0.75);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  padding: 0.95rem 0;
  overflow: hidden;
  position: relative;
  z-index: 10;
  font-size: 0.95rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

.flags-banner__inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.flags-banner__label {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--gold, #ffcd00);
  color: #0a0a0a;
  font-weight: 900;
  font-size: 0.825rem;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  padding: 0.55rem 1.1rem;
  border-radius: 6px;
  box-shadow: 0 4px 14px rgba(255, 205, 0, 0.4);
  white-space: nowrap;
}

.flags-banner__ticker-wrap {
  flex: 1;
  overflow: hidden;
  position: relative;
  mask-image: linear-gradient(to right, transparent, black 4%, black 96%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 4%, black 96%, transparent);
}

.flags-banner__ticker {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  white-space: nowrap;
  width: max-content;
  animation: scrollFlags 40s linear infinite;
}

.flags-banner__ticker:hover {
  animation-play-state: paused;
}

@keyframes scrollFlags {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.flag-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.45rem 1.05rem;
  border-radius: 24px;
  font-weight: 600;
  font-size: 0.95rem;
  color: #ffffff;
  transition: all 0.25s ease;
  backdrop-filter: blur(4px);
}

.flag-chip:hover {
  background: rgba(255, 255, 255, 0.22);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-2px) scale(1.03);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.4);
}

.flag-chip svg {
  width: 32px !important;
  height: 22px !important;
  border-radius: 3px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.5);
  flex-shrink: 0;
  display: block;
}

@media (max-width: 620px) {
  .flags-banner {
    padding: 0.7rem 0;
  }
  .flags-banner__label {
    font-size: 0.7rem;
    padding: 0.35rem 0.65rem;
  }
  .flag-chip {
    font-size: 0.85rem;
    padding: 0.35rem 0.75rem;
  }
  .flag-chip svg {
    width: 24px !important;
    height: 16px !important;
  }
}

.announce {
  background: var(--gold);
  color: var(--ink);
  border-bottom: 1px solid rgba(0, 0, 0, 0.12);
  font-size: 0.875rem;
}
.announce__inner {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding-block: 0.65rem;
}
.announce__tag {
  flex-shrink: 0;
  background: var(--ink);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.3rem 0.6rem;
}
.announce__msg { margin: 0; max-width: none; font-weight: 500; }
.announce__msg a { color: var(--ink); font-weight: 700; }

/* --------------------------------------------------------------------------
   9. Hero
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  color: #fff;
  background-color: #061436;
  background-image:
    linear-gradient(105deg, rgba(4, 12, 33, 0.96) 0%, rgba(4, 12, 33, 0.88) 45%, rgba(4, 12, 33, 0.72) 100%),
    radial-gradient(1100px 520px at 15% 0%, rgba(0, 139, 255, 0.5), transparent 60%),
    radial-gradient(900px 480px at 88% 25%, rgba(212, 30, 133, 0.42), transparent 62%),
    radial-gradient(700px 400px at 55% 100%, rgba(43, 0, 170, 0.55), transparent 65%),
    url("../img/hero.jpg");
  background-size: cover;
  background-position: center;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.055) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.055) 1px, transparent 1px);
  background-size: 62px 62px;
  pointer-events: none;
}
.hero__inner {
  position: relative;
  z-index: 2;
  padding-top: clamp(1rem, 2.5vw, 1.75rem);
  padding-bottom: clamp(1rem, 2vw, 1.75rem);
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: var(--sp-5);
  border-left: 3px solid var(--red);
  padding-left: 0.75rem;
}
.hero h1 {
  color: #fff;
  font-size: clamp(2.1rem, 5.4vw, 4.2rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  max-width: 20ch;
  margin-bottom: var(--sp-4);
}
.hero__acronym {
  display: block;
  font-size: clamp(3.25rem, 11vw, 8rem);
  font-weight: 900;
  letter-spacing: -0.045em;
  line-height: 0.9;
  margin-bottom: 0.25rem;
}
.hero__acronym em { font-style: normal; color: var(--red); }
.hero__tag {
  font-size: clamp(1.05rem, 1.9vw, 1.35rem);
  color: #dfe6f5;
  max-width: 54ch;
  margin-bottom: var(--sp-5);
}
.hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 0 var(--sp-6);
  list-style: none;
  padding: 0;
  margin: 0 0 var(--sp-6);
}
.hero__facts li {
  margin: 0 0 0.5rem;
  padding-right: var(--sp-6);
  border-right: 1px solid rgba(255, 255, 255, 0.22);
}
.hero__facts li:last-child { border-right: 0; padding-right: 0; }
.hero__facts b {
  display: block;
  color: #fff;
  font-size: 1.0625rem;
  font-weight: 700;
  line-height: 1.3;
}
.hero__facts span {
  display: block;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

/* Countdown */
.countdown {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  list-style: none;
  padding: 0;
  margin: 0;
}
.countdown li {
  margin: 0;
  min-width: 84px;
  padding: 0.7rem 0.9rem;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  backdrop-filter: blur(3px);
  text-align: center;
}
.countdown b {
  display: block;
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  font-weight: 900;
  line-height: 1;
  color: #fff;
  font-variant-numeric: tabular-nums;
}
.countdown span {
  display: block;
  margin-top: 0.3rem;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

/* Page banner (interior pages) */
.pagehead {
  position: relative;
  background: var(--ink);
  color: #fff;
  overflow: hidden;
}
.pagehead::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(760px 340px at 12% 0%, rgba(0, 59, 206, 0.75), transparent 62%),
    radial-gradient(620px 320px at 90% 100%, rgba(212, 30, 133, 0.5), transparent 64%);
}
.pagehead__inner { position: relative; z-index: 2; padding-block: clamp(2.5rem, 6vw, 4.5rem); }
.pagehead h1 { color: #fff; margin-bottom: var(--sp-3); }
.pagehead p { color: #d7dced; max-width: 62ch; margin: 0; }
.pagehead .eyebrow { color: var(--cyan); }

.breadcrumb {
  font-size: 0.8125rem;
  color: #a8b2cc;
  margin: 0 0 var(--sp-5);
  max-width: none;
}
.breadcrumb a { color: #cfd6e8; text-decoration: none; }
.breadcrumb a:hover { color: #fff; text-decoration: underline; }
.breadcrumb span { opacity: 0.5; margin-inline: 0.4rem; }

/* --------------------------------------------------------------------------
   10. Key-facts strip
   -------------------------------------------------------------------------- */
.factstrip {
  background: var(--surface-2);
  border-bottom: 1px solid var(--line);
}
.factstrip__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}
.factstrip__item {
  padding: var(--sp-5) var(--sp-5) var(--sp-5) 0;
  border-right: 1px solid var(--line);
}
.factstrip__item:last-child { border-right: 0; }
.factstrip__item .eyebrow { margin-bottom: 0.35rem; }
.factstrip__item p { margin: 0; font-size: 1.0625rem; color: var(--ink); font-weight: 500; }
.factstrip__item .small { font-weight: 400; color: var(--muted); }
@media (max-width: 700px) {
  .factstrip__item { border-right: 0; border-bottom: 1px solid var(--line); padding-right: 0; }
  .factstrip__item:last-child { border-bottom: 0; }
}

/* --------------------------------------------------------------------------
   11. Cards
   -------------------------------------------------------------------------- */
.card {
  display: flex;
  flex-direction: column;
  background: #fff;
  border: 1px solid var(--line);
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.card:hover { border-color: var(--line-strong); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.card__body { padding: var(--sp-5); display: flex; flex-direction: column; flex: 1; }
.card__body > :last-child { margin-bottom: 0; }
.card h3 { margin-bottom: var(--sp-3); }
.card p { font-size: 0.9375rem; color: var(--muted); }
.card .arrow-link { margin-top: auto; padding-top: var(--sp-4); align-self: flex-start; }
.card__media {
  aspect-ratio: 16 / 10;
  background: var(--surface-3);
  position: relative;
  overflow: hidden;
}
.card__media img { width: 100%; height: 100%; object-fit: cover; }

/* Track cards */
.trackcard { border-top: 6px solid var(--tc, var(--blue)); }
.trackcard__num {
  font-size: 0.6875rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--tc, var(--blue));
  margin-bottom: 0.5rem;
}
.trackcard ul {
  margin: 0 0 var(--sp-4);
  padding-left: 1.05rem;
  font-size: 0.9rem;
  color: var(--muted);
}
.trackcard li { margin-bottom: 0.2rem; }

/* Numbered feature cards */
.numcard { position: relative; padding: var(--sp-6) var(--sp-5) var(--sp-5); background: #fff; border: 1px solid var(--line); }
.numcard__n {
  font-size: 2.25rem;
  font-weight: 900;
  line-height: 1;
  color: var(--blue);
  letter-spacing: -0.04em;
  margin-bottom: var(--sp-3);
  display: block;
}
.numcard h3 { font-size: 1.125rem; }
.numcard p { font-size: 0.9375rem; margin-bottom: 0; }

/* Person cards */
.person {
  display: flex;
  gap: var(--sp-4);
  padding: var(--sp-4);
  background: #fff;
  border: 1px solid var(--line);
  align-items: flex-start;
}
.grid > .person:only-child {
  width: fit-content;
  max-width: 540px;
  justify-self: start;
}
.person__avatar {
  flex-shrink: 0;
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  background: var(--surface-2);
  color: var(--blue);
  font-weight: 900;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
  border: 1px solid var(--line);
}
.person__body { min-width: 0; }
.person__name { font-size: 1rem; font-weight: 700; color: var(--ink); margin: 0 0 0.15rem; line-height: 1.3; }
.person__desig { font-size: 0.8125rem; font-weight: 600; color: var(--blue, #0066cc); margin: 0 0 0.15rem; line-height: 1.35; }
.person__dept { font-size: 0.8125rem; color: #475569; margin: 0 0 0.15rem; line-height: 1.35; }
.person__role { font-size: 0.8125rem; font-weight: 700; color: var(--red); margin: 0 0 0.2rem; text-transform: uppercase; letter-spacing: 0.06em; }
#advisory .person__role { font-size: 1.05rem; font-weight: 800; letter-spacing: 0.08em; margin: 0 0 0.25rem; }
.person__affil { font-size: 0.875rem; color: var(--muted); margin: 0; line-height: 1.45; }
.person p { text-align: left; text-justify: auto; }
.committee-card__affil { text-align: left; text-justify: auto; }

/* Portrait photographs */
.person__photo {
  flex-shrink: 0;
  width: 74px;
  height: 74px;
  object-fit: cover;
  object-position: center top;
  background: var(--surface-2);
  border: 1px solid var(--line);
}
/* Portraits are prepared as squares. A 4:3 box trims only the lower quarter,
   and the 20% vertical anchor keeps the head clear of the top edge — a 2:1
   banner crop, by contrast, decapitates every portrait. */
.person--feature {
  flex-direction: column;
  gap: 0;
  padding: 0;
  border-top: 3px solid var(--blue);
  border-radius: 0;
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.person--feature:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.person--feature .person__photo {
  width: 100%;
  height: 160px;
  aspect-ratio: auto;
  object-fit: cover;
  object-position: center 20%;
  border: 0;
  border-bottom: 1px solid var(--line);
  display: block;
}

.person--feature .person__avatar {
  width: 100%;
  height: 160px;
  font-size: 2rem;
  border: 0;
  border-bottom: 1px solid var(--line);
}

.person--feature .person__body {
  padding: 0.65rem 0.8rem 0.8rem;
}

.person--feature .person__role {
  font-size: 0.62rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  margin-bottom: 0.15rem;
}

.person--feature .person__name {
  font-size: 0.85rem;
  font-weight: 700;
  line-height: 1.25;
  margin-bottom: 0.15rem;
}

.person--feature .person__desig {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--blue, #0066cc);
  line-height: 1.25;
  margin-bottom: 0.1rem;
}

.person--feature .person__dept {
  font-size: 0.7rem;
  color: var(--text-dim, #64748b);
  line-height: 1.25;
  margin-bottom: 0.1rem;
}

.person--feature .person__affil {
  font-size: 0.72rem;
  line-height: 1.35;
}

.person--feature .person__link {
  font-size: 0.7rem;
  margin-top: 0.35rem;
}

.person--feature .person__talk {
  font-size: 0.8rem;
  color: var(--ink-2);
  border-left: 3px solid var(--line-strong);
  padding-left: 0.65rem;
  margin-top: 0.5rem;
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   12. Dates / timeline
   -------------------------------------------------------------------------- */
.dates { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.dates li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.5rem var(--sp-4);
  margin: 0;
  padding: var(--sp-4) 0;
  border-bottom: 1px solid var(--line);
}
.dates__label { font-weight: 700; color: var(--ink); font-size: 1rem; }
.dates__meta { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }
.dates__when { font-weight: 700; color: var(--blue); font-variant-numeric: tabular-nums; white-space: nowrap; }
.dates li.is-past .dates__when { color: var(--muted-2); text-decoration: line-through; }
.dates li.is-past .dates__label { color: var(--muted); }
.dates li.is-next { background: linear-gradient(90deg, rgba(255, 205, 0, 0.16), transparent 70%); }
.section--ink .dates { border-top-color: #333; }
.section--ink .dates li { border-bottom-color: #333; }
.section--ink .dates__label { color: #fff; }
.section--ink .dates__when { color: var(--cyan); }
.section--ink .dates li.is-next { background: linear-gradient(90deg, rgba(255, 205, 0, 0.16), transparent 70%); }

/* Headline deadline block — the single thing authors come to the CFP for */
.deadline {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  background: var(--ink);
  color: #fff;
  padding: clamp(1.5rem, 3vw, 2.25rem) clamp(1.5rem, 3vw, 2.5rem);
  border-left: 8px solid var(--red);
  margin-bottom: var(--sp-7);
}
.deadline__label {
  display: block;
  font-size: 0.6875rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.5rem;
}
.deadline__date {
  display: block;
  font-size: clamp(2rem, 5.5vw, 3.5rem);
  font-weight: 900;
  letter-spacing: -0.035em;
  line-height: 1;
  color: #fff;
}
.deadline__note {
  display: block;
  margin-top: 0.6rem;
  font-size: 0.875rem;
  color: #a9a9a9;
}
.deadline__left {
  display: inline-block;
  margin-top: 0.75rem;
  background: var(--red);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.35rem 0.7rem;
}
.deadline__left.is-past { background: #3a3a3a; color: #bdbdbd; }

.badge {
  display: inline-block;
  font-size: 0.625rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.25rem 0.5rem;
  background: var(--surface-3);
  color: var(--ink);
  white-space: nowrap;
}
.badge--live { background: var(--red); color: #fff; }
.badge--soon { background: var(--gold); color: var(--ink); }
.badge--done { background: var(--surface-3); color: var(--muted); }
.badge--new { background: var(--blue); color: #fff; }

.ics-btn {
  font: inherit;
  font-size: 0.75rem;
  font-weight: 700;
  background: none;
  border: 1px solid var(--line-strong);
  color: var(--ink-2);
  padding: 0.25rem 0.55rem;
  cursor: pointer;
  white-space: nowrap;
}
.ics-btn:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.section--ink .ics-btn { border-color: #4a4a4a; color: #cfcfcf; }
.section--ink .ics-btn:hover { background: #fff; color: var(--ink); }

/* --------------------------------------------------------------------------
   13. Tables
   -------------------------------------------------------------------------- */
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; margin-bottom: var(--sp-5); }
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9375rem;
  min-width: 520px;
  background: #fff;
}
table.data caption {
  text-align: left;
  font-weight: 700;
  color: var(--ink);
  padding-bottom: var(--sp-3);
}
table.data th,
table.data td {
  padding: 0.85rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.data thead th {
  background: var(--ink);
  color: #fff;
  font-size: 0.6875rem;
  font-weight: 900;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  border-bottom: 0;
}
table.data tbody tr:nth-child(even) { background: var(--surface-2); }
table.data tbody tr:hover { background: #eef3ff; }
table.data td.num { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--ink); white-space: nowrap; }
table.data tfoot td { font-size: 0.8125rem; color: var(--muted); background: var(--surface-2); }

/* --------------------------------------------------------------------------
   14. Callouts / notes
   -------------------------------------------------------------------------- */
.note {
  border-left: 5px solid var(--blue);
  background: var(--surface-2);
  padding: var(--sp-4) var(--sp-5);
  margin-bottom: var(--sp-5);
}
.note > :last-child { margin-bottom: 0; }
.note h4 { margin-bottom: 0.35rem; }
.note--warn { border-left-color: var(--red); background: #fff3f3; }
.note--ok { border-left-color: #0a7d38; background: #f0faf3; }
.note--gold { border-left-color: var(--gold); background: #fffaea; }

.checklist { list-style: none; padding: 0; margin: 0 0 var(--sp-5); }
.checklist li {
  position: relative;
  padding-left: 1.9rem;
  margin-bottom: 0.65rem;
}
.checklist li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 12px;
  height: 7px;
  border-left: 2.5px solid var(--blue);
  border-bottom: 2.5px solid var(--blue);
  transform: rotate(-45deg);
}
.section--ink .checklist li::before { border-color: var(--cyan); }

.steps { list-style: none; counter-reset: step; padding: 0; margin: 0 0 var(--sp-5); }
.steps > li {
  counter-increment: step;
  position: relative;
  padding: 0 0 var(--sp-5) 3.25rem;
  border-left: 2px solid var(--line);
  margin-left: 1.1rem;
}
.steps > li:last-child { border-left-color: transparent; padding-bottom: 0; }
.steps > li::before {
  content: counter(step);
  position: absolute;
  left: -1.1rem;
  top: -0.15rem;
  width: 2.2rem;
  height: 2.2rem;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: #fff;
  font-weight: 900;
  font-size: 0.9375rem;
  border-radius: 50%;
}
.steps h4 { margin-bottom: 0.3rem; }
.steps p { margin-bottom: 0.5rem; font-size: 0.9375rem; }

/* --------------------------------------------------------------------------
   15. Accordion (FAQ)
   -------------------------------------------------------------------------- */
.accordion { border-top: 1px solid var(--line); }
.accordion details { border-bottom: 1px solid var(--line); }
.accordion summary {
  list-style: none;
  cursor: pointer;
  padding: var(--sp-4) 2.5rem var(--sp-4) 0;
  font-weight: 700;
  color: var(--ink);
  position: relative;
  font-size: 1.0625rem;
}
.accordion summary::-webkit-details-marker { display: none; }
.accordion summary::after {
  content: "+";
  position: absolute;
  right: 0.4rem;
  top: 50%;
  transform: translateY(-50%);
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--blue);
  line-height: 1;
}
.accordion details[open] summary::after { content: "–"; }
.accordion summary:hover { color: var(--blue); }
.accordion__body { padding: 0 2.5rem var(--sp-5) 0; }
.accordion__body > :last-child { margin-bottom: 0; }

/* --------------------------------------------------------------------------
   16. Filter / search toolbar
   -------------------------------------------------------------------------- */
.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  align-items: center;
  padding: var(--sp-4);
  background: var(--surface-2);
  border: 1px solid var(--line);
  margin-bottom: var(--sp-6);
  position: sticky;
  top: var(--masthead-h);
  z-index: 20;
}
.toolbar label { font-size: 0.75rem; font-weight: 900; letter-spacing: 0.11em; text-transform: uppercase; color: var(--muted); }
.field {
  font: inherit;
  font-size: 0.9375rem;
  padding: 0.6rem 0.85rem;
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--ink);
  min-width: 0;
}
.field:focus-visible { outline: var(--focus); outline-offset: 0; border-color: var(--blue); }
.field--grow { flex: 1 1 220px; }
select.field { cursor: pointer; }
.chip {
  font: inherit;
  font-size: 0.8125rem;
  font-weight: 700;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--line-strong);
  background: #fff;
  color: var(--ink-2);
  cursor: pointer;
  white-space: nowrap;
}
.chip:hover { border-color: var(--ink); }
.chip[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }
.filter-count { font-size: 0.875rem; color: var(--muted); margin-left: auto; }
[hidden] { display: none !important; }
.empty-state { padding: var(--sp-7) 0; text-align: center; color: var(--muted); }

/* --------------------------------------------------------------------------
   17. Tabs
   -------------------------------------------------------------------------- */
.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-bottom: 2px solid var(--ink);
  margin-bottom: var(--sp-6);
}
.tabs button {
  font: inherit;
  font-size: 0.875rem;
  font-weight: 700;
  padding: 0.75rem 1.15rem;
  background: none;
  border: 0;
  border-bottom: 4px solid transparent;
  margin-bottom: -2px;
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
}
.tabs button:hover { color: var(--ink); }
.tabs button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--red); }

/* --------------------------------------------------------------------------
   18. Track detail blocks
   -------------------------------------------------------------------------- */
.track {
  border: 1px solid var(--line);
  border-top: 6px solid var(--tc, var(--blue));
  background: #fff;
  margin-bottom: var(--sp-5);
}
.track__head { padding: var(--sp-5) var(--sp-5) var(--sp-3); }
.track__num {
  font-size: 0.6875rem;
  font-weight: 900;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--tc, var(--blue));
  margin-bottom: 0.4rem;
}
.track h3 { margin-bottom: 0.4rem; }
.track__head p { font-size: 0.9375rem; color: var(--muted); margin: 0; }
.track__topics {
  list-style: none;
  margin: 0;
  padding: var(--sp-3) var(--sp-5) var(--sp-5);
  columns: 2;
  column-gap: var(--sp-6);
  font-size: 0.9375rem;
}
.track__topics li {
  break-inside: avoid;
  margin-bottom: 0.45rem;
  padding-left: 1.1rem;
  position: relative;
  color: var(--ink-2);
}
.track__topics li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 6px;
  height: 6px;
  background: var(--tc, var(--blue));
}
.track__topics li mark { background: var(--gold); color: var(--ink); padding: 0 2px; }
@media (max-width: 720px) { .track__topics { columns: 1; } }

/* --------------------------------------------------------------------------
   19. Sidebar / sticky aside
   -------------------------------------------------------------------------- */
.aside-card {
  border: 1px solid var(--line);
  background: var(--surface-2);
  padding: var(--sp-5);
  margin-bottom: var(--sp-5);
}
.aside-card h3 { font-size: 1.0625rem; margin-bottom: var(--sp-3); }
.aside-card > :last-child { margin-bottom: 0; }
/* No trailing gap under the last card in a sidebar. */
.aside-card:last-child { margin-bottom: 0; }
.aside-card ul { padding-left: 1.05rem; font-size: 0.9375rem; }
.aside-sticky { position: sticky; top: calc(var(--masthead-h) + 1.5rem); }
@media (max-width: 880px) { .aside-sticky { position: static; } }

.linklist { list-style: none; padding: 0; margin: 0; }
.linklist li { margin: 0; border-bottom: 1px solid var(--line); }
.linklist li:last-child { border-bottom: 0; }
.linklist a {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: center;
  padding: 0.7rem 0;
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--ink);
  text-decoration: none;
}
.linklist a::after { content: "→"; color: var(--blue); }
.linklist a:hover { color: var(--blue); }

/* --------------------------------------------------------------------------
   20. Copy-to-clipboard rows
   -------------------------------------------------------------------------- */
.kv { list-style: none; margin: 0; padding: 0; }
.kv li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 1rem;
  align-items: baseline;
  padding: 0.65rem 0;
  border-bottom: 1px dashed var(--line);
  margin: 0;
}
.kv dt, .kv__k {
  flex: 0 0 190px;
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.kv dd, .kv__v { margin: 0; font-weight: 500; color: var(--ink); word-break: break-word; flex: 1 1 200px; }
.copy-btn {
  font: inherit;
  font-size: 0.6875rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: none;
  border: 1px solid var(--line-strong);
  color: var(--muted);
  padding: 0.2rem 0.45rem;
  cursor: pointer;
}
.copy-btn:hover { background: var(--ink); color: #fff; border-color: var(--ink); }
.copy-btn.is-done { background: #0a7d38; border-color: #0a7d38; color: #fff; }

/* --------------------------------------------------------------------------
   21. Fee calculator
   -------------------------------------------------------------------------- */
.calc { border: 2px solid var(--ink); background: #fff; padding: var(--sp-5); }
.calc__fields { display: grid; gap: var(--sp-4); grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); margin-bottom: var(--sp-5); }
.calc__field { display: grid; gap: 0.35rem; }
.calc__field label { font-size: 0.6875rem; font-weight: 900; letter-spacing: 0.11em; text-transform: uppercase; color: var(--muted); }
.calc__out {
  background: var(--ink);
  color: #fff;
  padding: var(--sp-4) var(--sp-5);
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-3);
}
.calc__total { font-size: clamp(1.75rem, 4vw, 2.5rem); font-weight: 900; letter-spacing: -0.03em; line-height: 1; }
.calc__note { font-size: 0.8125rem; color: #b9b9b9; margin: 0; max-width: 40ch; }

/* --------------------------------------------------------------------------
   22. Forms
   -------------------------------------------------------------------------- */
.form { display: grid; gap: var(--sp-4); }
.form__row { display: grid; gap: var(--sp-4); grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.form__field { display: grid; gap: 0.35rem; }
.form__field label { font-size: 0.75rem; font-weight: 900; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.form__field .req { color: var(--red); }
textarea.field { min-height: 140px; resize: vertical; }
.form__hint { font-size: 0.8125rem; color: var(--muted); }

/* --------------------------------------------------------------------------
   23. Stats
   -------------------------------------------------------------------------- */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: var(--sp-5); }
.stat b {
  display: block;
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--ink);
}
.section--ink .stat b { color: #fff; }
.stat span {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--muted);
}
.section--ink .stat span { color: #a9a9a9; }

/* --------------------------------------------------------------------------
   24. Logo strip / sponsors
   -------------------------------------------------------------------------- */
.logos { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.logos > div {
  background: #fff;
  min-height: 132px;
  display: grid;
  place-items: center;
  gap: 0.6rem;
  align-content: center;
  padding: var(--sp-4);
  text-align: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--muted);
  letter-spacing: 0.02em;
}
.logos img { max-height: 46px; width: auto; object-fit: contain; }
.logos small {
  display: block;
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--muted-2);
}

/* "Hosted by" / "Published by" lockups */
.lockup {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.7rem 1.1rem;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid rgba(255, 255, 255, 0.35);
}
.lockup__label {
  font-size: 0.625rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  border-right: 1px solid var(--line);
  padding-right: 0.9rem;
  white-space: nowrap;
}
.lockup img { height: 34px; width: auto; object-fit: contain; }
.lockup--plain { background: #fff; border-color: var(--line); }

.publisher-card {
  display: flex;
  align-items: center;
  gap: var(--sp-5);
  flex-wrap: wrap;
  padding: var(--sp-5);
  background: #fff;
  border: 1px solid var(--line);
}
.publisher-card img { height: 44px; width: auto; object-fit: contain; }
.publisher-card p { margin: 0; font-size: 0.9375rem; color: var(--muted); flex: 1 1 260px; }

.footer__lockups {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--sp-3);
  margin-top: var(--sp-5);
}
.footer__lockups img {
  height: 34px;
  width: auto;
  background: #fff;
  padding: 4px 9px;
}
.footer__dept {
  font-size: 0.75rem;
  line-height: 1.55;
  color: #8f8f8f;
}

/* --------------------------------------------------------------------------
   25. CTA band
   -------------------------------------------------------------------------- */
.cta-band {
  background: var(--blue);
  color: #fff;
  background-image: linear-gradient(120deg, var(--violet), var(--blue) 55%, var(--blue-bright));
}
.cta-band__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
  padding-block: clamp(2.25rem, 5vw, 3.5rem);
}
.cta-band h2 { color: #fff; margin-bottom: 0.5rem; }
.cta-band p { color: #dce7ff; margin: 0; }

/* --------------------------------------------------------------------------
   26. Footer
   -------------------------------------------------------------------------- */
.footer { background: var(--ink); color: #a8a8a8; font-size: 0.9375rem; }
.footer__main { padding-block: var(--sp-8); display: grid; gap: var(--sp-6); grid-template-columns: minmax(0, 1.4fr) repeat(auto-fit, minmax(150px, 1fr)); }
.footer h4 {
  color: #fff;
  font-size: 0.75rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: var(--sp-4);
}
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin-bottom: 0.55rem; }
.footer a { color: #a8a8a8; text-decoration: none; }
.footer a:hover { color: #fff; text-decoration: underline; }
.footer__brand .brand__name { color: #fff; font-size: 1.5rem; }
.footer__brand p { font-size: 0.9375rem; color: #a8a8a8; max-width: 38ch; }
.footer__bottom {
  border-top: 1px solid #2a2a2a;
  padding-block: var(--sp-5);
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3) var(--sp-5);
  justify-content: space-between;
  font-size: 0.8125rem;
}
.footer__bottom p { margin: 0; max-width: none; }
.social { display: flex; gap: 0.5rem; margin-top: var(--sp-4); }
.social a {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid #3a3a3a;
  color: #cfcfcf;
  font-size: 0.75rem;
  font-weight: 700;
}
.social a:hover { background: #fff; color: var(--ink); border-color: #fff; text-decoration: none; }

/* --------------------------------------------------------------------------
   27. Back to top
   -------------------------------------------------------------------------- */
.to-top {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 80;
  width: 46px;
  height: 46px;
  display: grid;
  place-items: center;
  background: var(--ink);
  color: #fff;
  border: 0;
  cursor: pointer;
  font-size: 1.15rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.2s ease, background-color 0.15s ease;
}
.to-top.is-visible { opacity: 1; visibility: visible; }
.to-top:hover { background: var(--red); }

/* --------------------------------------------------------------------------
   28. Print
   -------------------------------------------------------------------------- */
@media print {
  .topbar, .masthead, .announce, .to-top, .toolbar, .cta-band, .footer__main .social,
  .btn, .ics-btn, .copy-btn, .nav-scrim { display: none !important; }
  body { color: #000; font-size: 11pt; }
  .hero, .pagehead { background: none !important; color: #000; }
  .hero h1, .pagehead h1, .hero__acronym { color: #000 !important; }
  .section { padding-block: 1rem; }
  a[href^="http"]::after { content: " (" attr(href) ")"; font-size: 9pt; color: #444; }
  .track, .card, table.data { break-inside: avoid; }
  .track__topics { columns: 2; }
}

/* ==================== END-TO-END COMMITTEE CAROUSEL ==================== */
.committee-showcase {
  position: relative;
  background: #060b17;
  padding: 0.25rem 0;
  overflow: hidden;
}

.committee-showcase--speakers {
  background: #040914;
  padding-top: 0.45rem;
}

.committee-showcase--national {
  background: #080f22;
  padding-bottom: 0.85rem;
}

.carousel-mini-head {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.15rem 0 0.25rem;
  margin-bottom: 0.1rem;
}

.carousel-mini-head__label {
  font-size: 0.725rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #ffcd00;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.carousel-mini-head__label::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ffcd00;
  box-shadow: 0 0 8px #ffcd00;
}

.carousel-mini-head__line {
  flex: 1;
  height: 1px;
  background: linear-gradient(to right, rgba(255, 205, 0, 0.4), rgba(255, 255, 255, 0.08), transparent);
}

/* ==================== TRACK RECORD PROCEEDINGS CARDS ==================== */
.proceedings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
  margin-bottom: 2.5rem;
}

.proceedings-card {
  background: var(--surface);
  border: 1px solid var(--border);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.proceedings-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.15);
  border-color: var(--accent);
}

.proceedings-card__cover-wrap {
  background: #091224;
  padding: 1.5rem 1rem 1rem;
  display: flex;
  justify-content: center;
  align-items: center;
  border-bottom: 1px solid var(--border);
}

.proceedings-card__cover {
  width: 130px;
  height: 185px;
  object-fit: cover;
  box-shadow: 4px 6px 18px rgba(0, 0, 0, 0.5);
  transition: transform 0.25s ease;
}

.proceedings-card:hover .proceedings-card__cover {
  transform: scale(1.04) rotate(-1deg);
}

.proceedings-card__body {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.proceedings-card__badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.725rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.2rem 0.55rem;
  background: rgba(245, 158, 11, 0.15);
  color: #b45309;
  margin-bottom: 0.65rem;
}

.proceedings-card__badge--ieee {
  background: rgba(0, 98, 155, 0.12);
  color: #00629b;
}

.proceedings-card__title {
  font-size: 0.975rem;
  font-weight: 700;
  line-height: 1.35;
  margin: 0 0 0.4rem;
  color: var(--ink);
}

.proceedings-card__sub {
  font-size: 0.825rem;
  color: var(--muted);
  line-height: 1.45;
  margin-bottom: 1rem;
  flex: 1;
}

.proceedings-card__btn {
  margin-top: auto;
}

.story-ticker-wrap {
  overflow: hidden;
  position: relative;
  width: 100%;
  padding: 0.2rem 0;
  mask-image: linear-gradient(to right, transparent, #000 3%, #000 97%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, #000 3%, #000 97%, transparent);
}

.story-ticker {
  display: flex;
  align-items: stretch;
  gap: 0;
  width: max-content;
  will-change: transform;
}

.story-ticker--speakers {
  animation: scrollStory 50s linear infinite;
}

.story-ticker--intl {
  animation: scrollStory 65s linear infinite;
}

.story-ticker--nat {
  animation: scrollStory 85s linear infinite;
}

.story-ticker-wrap:hover .story-ticker {
  animation-play-state: paused;
}

@keyframes scrollStory {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.story-card {
  text-decoration: none !important;
  color: inherit !important;
  flex-shrink: 0;
  width: 140px;
  height: 215px;
  position: relative;
  border-radius: 0;
  overflow: hidden;
  background: #091122;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-right: none;
  box-shadow: none;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease, z-index 0.25s ease;
  cursor: pointer;
}

.story-card:last-child {
  border-right: 1px solid rgba(255, 255, 255, 0.1);
}

.story-card:hover {
  transform: translateY(-3px);
  z-index: 5;
  border-color: #008bff;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.6);
}

.story-card__photo-frame {
  position: relative;
  width: 100%;
  height: 145px;
  overflow: hidden;
  background: #040915;
}

.story-card__photo-frame::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 55px;
  background: linear-gradient(
    to bottom,
    rgba(9, 18, 36, 0) 0%,
    rgba(9, 18, 36, 0.35) 30%,
    rgba(9, 18, 36, 0.8) 70%,
    #091224 100%
  );
  pointer-events: none;
  z-index: 2;
}

.story-card__photo {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.story-card:hover .story-card__photo {
  transform: scale(1.08);
}

.story-card__badge {
  position: absolute;
  top: 0.4rem;
  right: 0.4rem;
  background: rgba(4, 9, 20, 0.82) !important;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.18) !important;
  font-size: 0.95rem;
  line-height: 1;
  padding: 0.2rem 0.4rem;
  border-radius: 0;
  z-index: 3;
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.4);
}

.story-card__badge--flag {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  background: transparent !important;
  border: none !important;
  padding: 0 !important;
  backdrop-filter: none !important;
  -webkit-backdrop-filter: none !important;
  box-shadow: none !important;
  border-radius: 0 !important;
  display: block !important;
  z-index: 3;
  line-height: 0 !important;
}

.flag-icon-img {
  width: 26px !important;
  height: 18px !important;
  min-width: 26px !important;
  min-height: 18px !important;
  aspect-ratio: 4 / 3 !important;
  object-fit: cover !important;
  border-radius: 0 !important;
  display: block !important;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(255, 255, 255, 0.35) !important;
}

.story-card__badge--logo {
  position: absolute;
  top: 0.45rem;
  right: 0.45rem;
  width: 28px;
  height: 28px;
  background: rgba(255, 255, 255, 0.95) !important;
  border-radius: 50% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 2.5px !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.4) !important;
  z-index: 3;
}

.story-card__badge--logo-left {
  position: absolute;
  top: 0.45rem;
  left: 0.45rem;
  width: 26px;
  height: 26px;
  background: rgba(255, 255, 255, 0.95) !important;
  border-radius: 50% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  padding: 2.5px !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.4) !important;
  z-index: 3;
}

.inst-logo-img {
  width: 100% !important;
  height: 100% !important;
  max-width: 21px !important;
  max-height: 21px !important;
  object-fit: contain !important;
  display: block !important;
}

.story-card__badge--text {
  font-size: 0.6rem;
  font-weight: 800;
  color: #ffcd00 !important;
  border-color: rgba(255, 205, 0, 0.4) !important;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.18rem 0.45rem;
  border-radius: 0;
}

.story-card__info {
  height: 70px;
  padding: 0.35rem 0.65rem 0.45rem;
  background: #091224;
  border-top: none;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  z-index: 2;
}

.story-card__overlay {
  display: none;
}

.committee-showcase .story-card__name,
.story-card__name {
  font-size: 0.78rem !important;
  font-weight: 800 !important;
  color: #ffffff !important;
  margin: 0 0 0.08rem !important;
  line-height: 1.2 !important;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.story-card__desig {
  font-size: 0.6rem;
  font-weight: 600;
  color: #38bdf8;
  margin: 0 0 0.04rem;
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.story-card__dept {
  font-size: 0.58rem;
  font-weight: 500;
  color: #cbd5e1;
  margin: 0 0 0.04rem;
  line-height: 1.15;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.story-card__affil {
  font-size: 0.63rem;
  font-weight: 500;
  color: #94a3b8;
  margin: 0 0 0.08rem;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.story-card__country {
  font-size: 0.58rem;
  font-weight: 700;
  color: #38bdf8;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin: 0;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.story-indicator-bar {
  display: none;
}

@media (max-width: 768px) {
  .story-card { width: 115px; height: 175px; }
  .story-card__photo-frame { height: 115px; }
  .story-card__info { height: 60px; padding: 0.25rem 0.45rem; }
  .story-card__country { font-size: 0.52rem; }
  .committee-showcase .story-card__name,
  .story-card__name { font-size: 0.7rem !important; }
  .story-card__affil { font-size: 0.58rem; }
  .flag-icon-img { width: 22px !important; height: 15px !important; min-width: 22px !important; min-height: 15px !important; }
  .story-card__badge--logo { width: 23px; height: 23px; }
  .story-card__badge--logo-left { width: 22px; height: 22px; }
  .inst-logo-img { max-width: 17px !important; max-height: 17px !important; }
}

.split--wide-aside { grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr); }
@media (max-width: 880px) { .split--wide-aside { grid-template-columns: minmax(0, 1fr); } }