:root {
  --bg: #f7f6f2;
  --card: #ffffff;
  --text: #1a1d23;
  --muted: #5d6572;
  --line: #dcdad2;
  --accent: #1f3a5f;
  --accent-text: #ffffff;
  --soft: #e8edf4;
  --now: #fff4d6;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14181f;
    --card: #1c222c;
    --text: #eceff4;
    --muted: #a3acba;
    --line: #2d3644;
    --accent: #8fb4e8;
    --accent-text: #0f1722;
    --soft: #243044;
    --now: #3a3217;
  }
}
:root[data-theme="dark"] {
  --bg: #14181f;
  --card: #1c222c;
  --text: #eceff4;
  --muted: #a3acba;
  --line: #2d3644;
  --accent: #8fb4e8;
  --accent-text: #0f1722;
  --soft: #243044;
  --now: #3a3217;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}
.topnav { position: sticky; top: 0; z-index: 5; display: flex; align-items: center; gap: 8px; margin: -20px -16px 16px; padding: 10px 16px; background: var(--bg); border-bottom: 1px solid var(--line); }
.navscroll { flex: 1; min-width: 0; display: flex; gap: 8px; overflow-x: auto; white-space: nowrap; -webkit-overflow-scrolling: touch; }
.topnav .homebtn, .topnav .theme { flex: none; font: inherit; border: 1px solid var(--line); border-radius: 999px; cursor: pointer; width: 36px; height: 36px; padding: 0; display: grid; place-items: center; background: var(--card); color: var(--text); border-color: var(--line); }
.topnav .theme svg, .topnav .homebtn svg { width: 18px; height: 18px; margin: 0; }
.topnav .homebtn { text-decoration: none; }
.thememenu { position: absolute; right: 16px; top: calc(100% + 6px); min-width: 150px; padding: 6px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 6px 20px rgba(0,0,0,.18); }
.thememenu[hidden] { display: none; }
.thememenu button { display: flex; align-items: center; gap: 10px; width: 100%; padding: 10px 12px; border: 0; border-radius: 8px; background: transparent; color: var(--text); font: inherit; text-align: left; cursor: pointer; }
.thememenu button svg { width: 18px; height: 18px; flex: none; }
.thememenu button[aria-checked="true"] { background: var(--soft); font-weight: 600; }
.navscroll button { flex: none; font: inherit; font-size: .9rem; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--card); color: var(--text); cursor: pointer; }
.navscroll button:first-child { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
[id^="s-"] { scroll-margin-top: 64px; }
main { max-width: 680px; margin: 0 auto; padding: 20px 16px 56px; }
a { color: var(--accent); }
h1 { font-size: 1.6rem; line-height: 1.25; margin: 0 0 4px; }
h2 { font-size: 1.15rem; margin: 32px 0 10px; }
h3 { font-size: 1rem; margin: 0; }
.meta { color: var(--muted); margin: 0 0 8px; }
.lead { margin: 16px 0 0; font-size: 1.05rem; }
.steps { margin: 12px 0 0; padding-left: 20px; }
.steps li { margin: 6px 0; }
table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
td { padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; font-size: .95rem; }
tr:last-child td { border-bottom: 0; }
td.t { white-space: nowrap; color: var(--muted); width: 1%; font-variant-numeric: tabular-nums; }
tr.now td { background: var(--now); }
.note { color: var(--muted); font-size: .9rem; margin: 8px 0 0; }
.theme { margin: 0; }
.pack {
  display: block; text-decoration: none; color: inherit;
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
  padding: 14px 16px; margin: 10px 0; min-height: 56px;
}
.pack:active, .pack:hover { border-color: var(--accent); }
.pack .sub { color: var(--muted); font-size: .9rem; margin-top: 2px; }
.badge {
  display: inline-block; background: var(--soft); color: var(--accent);
  border-radius: 6px; padding: 2px 8px; font-size: .8rem; margin: 0 6px 8px 0;
}
.back { display: inline-block; padding: 10px 0; margin-bottom: 6px; text-decoration: none; }
.panel { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; margin: 12px 0; }
.panel h2 { margin-top: 0; }
.panel ol, .panel ul { margin: 8px 0 0; padding-left: 22px; }
.panel li { margin: 10px 0; }
dl { margin: 8px 0 0; }
dt { font-weight: 600; margin-top: 10px; }
dd { margin: 0; color: var(--muted); }
.btn {
  display: block; text-align: center; text-decoration: none;
  background: var(--accent); color: var(--accent-text);
  border-radius: 10px; padding: 12px 14px; margin: 10px 0; font-weight: 600; min-height: 48px;
}
.btn small { display: block; font-weight: 400; opacity: .85; }
.btn.ghost { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.dl { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.dl a { padding: 8px 14px; border: 1px solid var(--line); border-radius: 8px; text-decoration: none; background: var(--card); min-height: 40px; }
details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 4px 16px; margin: 10px 0; }
summary { cursor: pointer; padding: 10px 0; font-weight: 600; min-height: 44px; }
details ul { margin: 0 0 12px; padding-left: 20px; }
details li { margin: 6px 0; }
details p { margin: 0 0 8px; color: var(--muted); font-size: .92rem; }
.ico { width: 1.1em; height: 1.1em; vertical-align: -0.2em; margin-right: 8px; color: var(--accent); }
summary .ico { margin-right: 8px; }
td.ic { width: 1%; padding-right: 0; }
td.ic .ico { margin: 0; }
.hero { display: block; width: 100%; max-width: 240px; margin: 4px auto 16px; color: var(--accent); }
.chlist { list-style: none; padding-left: 0; }
.chlist li { margin: 10px 0; }
.cw { color: var(--muted); font-size: .9rem; white-space: nowrap; }
.guide { font-size: .9rem; margin-left: 4px; white-space: nowrap; }
.talk { font-size: 1.02rem; }
.talk li { margin: 6px 0; }
footer { color: var(--muted); font-size: .88rem; margin-top: 40px; }
.joinform { display: flex; gap: 8px; margin-top: 8px; }
.joinform input { flex: 1; min-width: 0; font: inherit; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--text); }
.joinform .btn { margin: 0; padding: 10px 18px; min-height: 44px; border: 0; font: inherit; font-weight: 600; cursor: pointer; }
.joinform[hidden], #joined[hidden] { display: none; }

/* meeting history */
.tag { display: inline-block; font-size: .78rem; padding: 1px 8px; border-radius: 999px; background: var(--soft); color: var(--muted); white-space: nowrap; }
.nowreading { margin: 4px 0 0; color: var(--muted, #667); font-size: .95rem; }