*, *::before, *::after { box-sizing: border-box; }
  body, h1, h2, h3, p, ul, ol, figure, blockquote { margin: 0; }
  ul.conf-list, ul.paper-list, ul.tl { padding: 0; }
  img { max-width: 100%; display: block; }

  :root {
    --bg: #fbfcfd;
    --surface: #ffffff;
    --ink: #1c2733;
    --ink-soft: #55636f;
    --ink-faint: #8a97a3;
    --line: #e3e9ee;
    --accent: #0b7285;
    --accent-soft: #e0f2f5;
    --live: #2b8a3e;
    --live-soft: #e3f4e6;
    --tba: #9a6700;
    --tba-soft: #f7ecd4;
  }
  @media (prefers-color-scheme: dark) {
    :root {
      --bg: #12181f;
      --surface: #1a222b;
      --ink: #e6ecf1;
      --ink-soft: #a7b4c0;
      --ink-faint: #6e7d8a;
      --line: #2a3540;
      --accent: #4dc4d9;
      --accent-soft: #123b44;
      --live: #69c877;
      --live-soft: #17351d;
      --tba: #e0b350;
      --tba-soft: #3a2f14;
    }
  }
  :root[data-theme="dark"] {
    --bg: #12181f;
    --surface: #1a222b;
    --ink: #e6ecf1;
    --ink-soft: #a7b4c0;
    --ink-faint: #6e7d8a;
    --line: #2a3540;
    --accent: #4dc4d9;
    --accent-soft: #123b44;
    --live: #69c877;
    --live-soft: #17351d;
    --tba: #e0b350;
    --tba-soft: #3a2f14;
  }
  :root[data-theme="light"] {
    --bg: #fbfcfd;
    --surface: #ffffff;
    --ink: #1c2733;
    --ink-soft: #55636f;
    --ink-faint: #8a97a3;
    --line: #e3e9ee;
    --accent: #0b7285;
    --accent-soft: #e0f2f5;
    --live: #2b8a3e;
    --live-soft: #e3f4e6;
    --tba: #9a6700;
    --tba-soft: #f7ecd4;
  }

  body {
    background: var(--bg);
    color: var(--ink);
    font-family: "Avenir Next", "Segoe UI", system-ui, sans-serif;
    line-height: 1.55;
  }
  .wrap {
    max-width: 880px;
    margin: 0 auto;
    padding: 3rem 1.25rem 4rem;
  }

  header.page {
    border-bottom: 1px solid var(--line);
    padding-bottom: 1.75rem;
    margin-bottom: 2.5rem;
    position: relative;
  }
  .eyebrow {
    font-size: 0.72rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 0.6rem;
  }
  h1 {
    font-size: clamp(1.7rem, 4vw, 2.3rem);
    font-weight: 700;
    letter-spacing: -0.015em;
    text-wrap: balance;
    margin-bottom: 0.65rem;
  }
  .lede {
    color: var(--ink-soft);
    max-width: 58ch;
    font-size: 0.98rem;
  }
  .lede a { color: var(--accent); }

  section.year { margin-bottom: 2.75rem; }
  .year-head {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    margin-bottom: 1rem;
  }
  .year-head h2 {
    font-size: 1.35rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
  }
  .year-head .count {
    font-size: 0.8rem;
    color: var(--ink-faint);
  }

  ul.conf-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
  }
  .conf {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 0.9rem 1.1rem;
    display: grid;
    grid-template-columns: 7.5rem 1fr auto;
    gap: 0.35rem 1.1rem;
    align-items: baseline;
  }
  .conf .acro {
    font-weight: 700;
    font-size: 1.02rem;
  }
  .conf .acro a {
    color: var(--accent);
    text-decoration: none;
  }
  .conf .acro a:hover,
  .conf .acro a:focus-visible {
    text-decoration: underline;
    outline: none;
  }
  .conf .full {
    color: var(--ink-soft);
    font-size: 0.88rem;
    grid-column: 1 / -1;
    grid-row: 2;
  }
  .conf .meta {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 1.1rem;
    font-size: 0.88rem;
    color: var(--ink);
    font-variant-numeric: tabular-nums;
  }
  .conf .meta .loc { color: var(--ink-soft); }
  .pill {
    justify-self: end;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 0.18rem 0.6rem;
    border-radius: 999px;
    white-space: nowrap;
  }
  .pill.field { background: var(--accent-soft); color: var(--accent); }
  .pill.live { background: var(--live-soft); color: var(--live); }
  .pill.tba { background: var(--tba-soft); color: var(--tba); }
  .pill.done { background: var(--line); color: var(--ink-faint); }
  .pill.big3 { background: var(--accent); color: var(--bg); }
  .pill.flagship { background: transparent; color: var(--accent); box-shadow: inset 0 0 0 1px var(--accent); }
  .pill.top { background: transparent; color: var(--ink-soft); box-shadow: inset 0 0 0 1px var(--line); }
  .pill.emerging { background: var(--tba-soft); color: var(--tba); }
  .pill.applied { background: transparent; color: var(--ink-faint); box-shadow: inset 0 0 0 1px var(--line); }
  /* tier chips shown inline inside the explanatory note */
  .papers-note .pill { justify-self: auto; vertical-align: middle; margin: 0 0.1rem; }
  .pills { justify-self: end; display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 0.4rem; }

  .conf .keydates {
    grid-column: 1 / -1;
    margin-top: 0.4rem;
    border-top: 1px dashed var(--line);
    padding-top: 0.55rem;
  }
  .conf .keydates summary {
    cursor: pointer;
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    user-select: none;
  }
  .conf .keydates summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
  .conf .keydates ul {
    list-style: none;
    padding: 0.55rem 0 0.15rem;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.28rem;
  }
  .conf .keydates li {
    display: grid;
    grid-template-columns: 13rem 1fr;
    gap: 0.2rem 1rem;
    font-size: 0.84rem;
  }
  .conf .keydates .kd-label { color: var(--ink-faint); }
  .conf .keydates .kd-date { color: var(--ink); font-variant-numeric: tabular-nums; }
  .kd-flag {
    display: inline-block;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 0.08rem 0.5rem;
    border-radius: 999px;
    margin-left: 0.4rem;
    white-space: nowrap;
  }
  .kd-flag.closed { background: var(--line); color: var(--ink-faint); }
  .kd-flag.soon { background: var(--tba-soft); color: var(--tba); }
  .kd-flag.expected {
    background: var(--accent-soft);
    color: var(--accent);
    text-transform: none;
    letter-spacing: 0;
  }

  @media (max-width: 560px) {
    .conf { grid-template-columns: 1fr; }
    .pills { justify-self: start; grid-row: 4; }
    .conf .full { grid-row: 2; }
    .conf .meta { grid-row: 3; }
    .conf .keydates li { grid-template-columns: 1fr; gap: 0.05rem; }
  }

  nav.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    border-bottom: 1px solid var(--line);
    margin-bottom: 2.25rem;
  }
  nav.tabs button {
    appearance: none;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    padding: 0.55rem 0.9rem;
    font: inherit;
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--ink-soft);
    cursor: pointer;
  }
  nav.tabs button:hover { color: var(--ink); }
  nav.tabs button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: -2px;
  }
  nav.tabs button[aria-selected="true"] {
    color: var(--accent);
    border-bottom-color: var(--accent);
  }
  [hidden] { display: none !important; }

  .papers-note {
    color: var(--ink-soft);
    font-size: 0.88rem;
    max-width: 62ch;
    margin-bottom: 1.25rem;
  }
  ul.paper-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
  }
  .paper {
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 0.9rem 1.1rem;
    display: grid;
    grid-template-columns: 3.4rem 1fr;
    gap: 0.15rem 1rem;
  }
  .paper .votes {
    grid-row: 1 / span 3;
    align-self: start;
    text-align: center;
    border: 1px solid var(--line);
    border-radius: 6px;
    padding: 0.3rem 0.2rem;
    font-variant-numeric: tabular-nums;
  }
  .paper .votes .n {
    display: block;
    font-weight: 700;
    font-size: 1.02rem;
    color: var(--accent);
  }
  .paper .votes .lbl {
    display: block;
    font-size: 0.62rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-faint);
  }
  .paper h3 {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.35;
  }
  .paper h3 a { color: var(--ink); text-decoration: none; }
  .paper h3 a:hover, .paper h3 a:focus-visible { color: var(--accent); outline: none; }
  .paper .desc { color: var(--ink-soft); font-size: 0.88rem; }
  .paper .paper-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.4rem 0.9rem;
    font-size: 0.78rem;
    color: var(--ink-faint);
    margin-top: 0.3rem;
  }
  .paper .paper-meta a { color: var(--accent); text-decoration: none; }
  .paper .paper-meta a:hover, .paper .paper-meta a:focus-visible { text-decoration: underline; outline: none; }
  .tag {
    background: var(--accent-soft);
    color: var(--accent);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 0.14rem 0.55rem;
    border-radius: 999px;
  }

  .fetch-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
  }
  .fetch-bar button,
  .fetch-bar a.btn {
    appearance: none;
    font: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    color: #fff;
    background: var(--accent);
    border: none;
    border-radius: 6px;
    padding: 0.5rem 1.1rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-block;
    line-height: 1.4;
  }
  .fetch-bar button:hover,
  .fetch-bar a.btn:hover { filter: brightness(1.08); }
  .fetch-bar button:focus-visible,
  .fetch-bar a.btn:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
  .fetch-bar button:disabled { opacity: 0.6; cursor: wait; }
  .fetch-bar button.ghost,
  .fetch-bar a.btn.ghost {
    background: var(--surface);
    color: var(--ink-soft);
    border: 1px solid var(--line);
  }
  .fetch-status { font-size: 0.82rem; color: var(--ink-faint); }
  .fetch-status.error { color: var(--tba); }
  .fetch-status.ok { color: var(--live); }
  .prompt-box {
    margin-top: 0.8rem;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 0.8rem 1rem;
    font-size: 0.84rem;
    color: var(--ink-soft);
    user-select: all;
  }

  .area-nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-bottom: 2rem;
  }
  .area-nav a {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-soft);
    border-radius: 999px;
    padding: 0.25rem 0.8rem;
    text-decoration: none;
  }
  .area-nav a:hover, .area-nav a:focus-visible { text-decoration: underline; outline: none; }

  section.area { margin-bottom: 3rem; }
  section.area > h2 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
  }
  section.area > .area-sub {
    color: var(--ink-soft);
    font-size: 0.88rem;
    max-width: 60ch;
    margin-bottom: 1.25rem;
  }
  ul.tl {
    list-style: none;
    border-left: 2px solid var(--line);
    margin-left: 0.3rem;
    padding-left: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1.15rem;
  }
  ul.tl li { position: relative; }
  ul.tl li::before {
    content: "";
    position: absolute;
    left: calc(-1.5rem - 7px);
    top: 0.32rem;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--accent);
    border: 2px solid var(--bg);
  }
  ul.tl .yr {
    display: block;
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    color: var(--accent);
    font-variant-numeric: tabular-nums;
    text-transform: uppercase;
  }
  ul.tl h3 { font-size: 0.96rem; font-weight: 700; }
  ul.tl h3 a { color: var(--ink); text-decoration: none; }
  ul.tl h3 a:hover, ul.tl h3 a:focus-visible { color: var(--accent); outline: none; }
  ul.tl p { color: var(--ink-soft); font-size: 0.86rem; max-width: 62ch; }
  ul.tl .who {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.55rem;
    color: var(--ink-faint);
    font-size: 0.78rem;
    margin: 0.2rem 0 0.15rem;
  }
  section.area > h2 .era-range {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--ink-faint);
    letter-spacing: 0.06em;
    margin-left: 0.5rem;
    font-variant-numeric: tabular-nums;
  }

  footer.page {
    border-top: 1px solid var(--line);
    padding-top: 1.25rem;
    color: var(--ink-faint);
    font-size: 0.8rem;
    max-width: 65ch;
  }
  footer.page a { color: var(--accent); }