:root {
  --bg: #f5f6f8; --surface: #ffffff; --ink: #14171f; --muted: #5d6574; --line: #e2e5ea;
  --accent: #2457d6; --accent-ink: #ffffff; --soft: #eef2fc;
  --l1: #0b7a4b; --l1b: #e1f4ea; --l2: #2457d6; --l2b: #e6edfc; --l3: #7b3fc4; --l3b: #efe6fa;
  --warn: #8a5300; --warnb: #fff1d6; --new: #c2255c; --newb: #fde8ef;
  --font: "Yu Gothic UI", "Hiragino Sans", "Meiryo", system-ui, -apple-system, "Segoe UI", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115; --surface: #171a21; --ink: #e9ebf0; --muted: #9aa3b2; --line: #272c36;
    --accent: #86a8ff; --accent-ink: #0f1115; --soft: #1c2333;
    --l1: #5fd39b; --l1b: #12261d; --l2: #86a8ff; --l2b: #18213a; --l3: #c9a0ff; --l3b: #251a38;
    --warn: #f1b65a; --warnb: #2b2111; --new: #ff8fb4; --newb: #34161f;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 16px/1.75 var(--font); }
a { color: var(--accent); text-underline-offset: 3px; }
a:hover { text-decoration-thickness: 2px; }
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
h1, h2, h3, h4 { line-height: 1.4; margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

/* two columns: content + sidebar */
.layout { max-width: 1360px; margin: 0 auto; padding: 0 16px; display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 28px; align-items: start; }
.layout main { max-width: none; margin: 0; padding-left: 0; padding-right: 0; }
#side { position: sticky; top: 64px; max-height: calc(100vh - 80px); overflow-y: auto; padding: 20px 0 40px; display: grid; gap: 14px; }
.sidebox { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.sidebox h3 { font-size: 14px; display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; }
.cnt { font-size: 12.5px; font-weight: 700; color: var(--accent); font-variant-numeric: tabular-nums; }
.tpbox { margin-top: 10px; padding: 10px 14px; }
.tpbox > summary { cursor: pointer; font-weight: 700; font-size: 14px; }
.tpbox .frow { margin-top: 8px; }
.tpbox .frow > label { min-width: 8.5em; }
.chip { font-variant-numeric: tabular-nums; }
.chk { display: grid; gap: 8px; }
.chk label { display: flex; gap: 8px; align-items: flex-start; font-size: 14px; line-height: 1.5; }
.chk input, .readchk input { margin-top: 4px; }
.chk li.done a { color: var(--muted); text-decoration: line-through; }
.readchk { display: inline-flex; gap: 4px; align-items: center; margin-left: auto; font-size: 12.5px; cursor: pointer; }
.gloss { display: grid; gap: 8px; margin: 10px 0; }
.sidebox .field { width: 100%; }
.sidebox .todo li { padding: 6px 0; font-size: 13.5px; }
@media (max-width: 1100px) { .layout { display: block; } #side { position: static; max-height: none; overflow: visible; padding-top: 0; } }
.wrap, main, .bar, .foot { max-width: 1360px; margin-left: auto; margin-right: auto; padding-left: 16px; padding-right: 16px; }
main { padding-top: 20px; padding-bottom: 40px; }

/* top bar */
.top { position: sticky; top: 0; z-index: 5; background: var(--surface); border-bottom: 1px solid var(--line); }
.bar { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; padding-top: 10px; padding-bottom: 0; }
.brand { font-weight: 700; font-size: 17px; color: var(--ink); text-decoration: none; padding-bottom: 10px; }
#tabs { display: flex; gap: 4px; }
#tabs a { display: block; padding: 8px 14px 10px; color: var(--muted); text-decoration: none; border-bottom: 3px solid transparent; font-weight: 600; font-size: 15px; }
#tabs a:hover { color: var(--ink); }
#tabs a[aria-current="page"] { color: var(--accent); border-bottom-color: var(--accent); }

/* hero and blocks */
.hero { padding: 8px 0 4px; }
.hero h1 { font-size: 26px; }
.hero p { margin: 4px 0 0; color: var(--muted); }
.stat { font-size: 14px; }
.block { margin-top: 32px; }
.block > h2, .page-title { font-size: 20px; display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; }
.block > h2 small, .page-title small { font-size: 13px; color: var(--muted); font-weight: 400; }
.grouphead { font-size: 16px; margin: 22px 0 8px; padding-bottom: 6px; border-bottom: 2px solid var(--ink); display: flex; gap: 8px; align-items: baseline; }
.grouphead small { color: var(--muted); font-weight: 400; font-size: 13px; }
.daterow { font-size: 14px; color: var(--muted); font-weight: 700; margin: 22px 0 8px; padding-bottom: 4px; border-bottom: 1px solid var(--line); }
.empty { color: var(--muted); background: var(--surface); border: 1px dashed var(--line); border-radius: 10px; padding: 18px; }

/* cards */
.grid { display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 820px) { .grid { grid-template-columns: 1fr 1fr; } }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; margin-bottom: 10px; }
.grid .card { margin-bottom: 0; }
.card h3 { font-size: 17px; margin: 6px 0 2px; }
.card h3 a { color: var(--ink); text-decoration: none; }
.card h3 a:hover { color: var(--accent); text-decoration: underline; }
.one { margin: 2px 0 0; font-weight: 600; font-size: 15px; }
.sum { margin: 8px 0 0; font-size: 15px; }
.meta { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; font-size: 12.5px; color: var(--muted); }
.meta .src { font-weight: 700; color: var(--ink); }
.origin { margin: 8px 0 0; font-size: 13px; }
.sub { color: var(--muted); font-size: 12.5px; }
.heat { font-weight: 700; color: var(--new); }

/* badges */
.badge { display: inline-block; padding: 0 8px; border-radius: 999px; font-size: 12px; font-weight: 700; line-height: 20px; border: 1px solid transparent; white-space: nowrap; }
.l1 { color: var(--l1); background: var(--l1b); }
.l2 { color: var(--l2); background: var(--l2b); }
.l3 { color: var(--l3); background: var(--l3b); }
.badge.scope, .badge.cat { color: var(--muted); border-color: var(--line); background: transparent; }
.badge.warn { color: var(--warn); background: var(--warnb); }
.badge.new { color: var(--new); background: var(--newb); }
.badge.rel { color: var(--muted); border-color: var(--line); }
.badge.past { color: var(--warn); background: var(--warnb); }

/* details */
details.more { margin-top: 8px; }
details.more > summary, details.inline > summary { cursor: pointer; font-size: 13.5px; color: var(--accent); font-weight: 600; padding: 2px 0; }
.detail { margin-top: 6px; }
.plain { margin: 10px 0 0; padding: 10px 12px; background: var(--soft); border-radius: 8px; font-size: 14.5px; }
.terms { margin: 10px 0 0; font-size: 13.5px; }
.terms dt { font-weight: 700; display: inline; }
.terms dt::after { content: "："; }
.terms dd { display: inline; margin: 0; color: var(--muted); }
.terms dd::after { content: ""; display: block; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.tag { border: 1px solid var(--line); background: transparent; border-radius: 6px; padding: 0 8px; font-size: 12.5px; color: var(--muted); cursor: pointer; }
.tag:hover { color: var(--accent); border-color: var(--accent); }
.related { margin-top: 12px; padding-top: 10px; border-top: 1px solid var(--line); }
.related h4 { font-size: 13px; color: var(--muted); margin-bottom: 4px; }
.related li { padding: 5px 0; font-size: 14px; }
.related li > * { margin-right: 6px; }
.why { margin: 2px 0 0; font-size: 12.5px; color: var(--muted); }
.media li { padding: 4px 0; font-size: 14px; border-top: 1px solid var(--line); }
.media li:first-child { border-top: 0; }

/* filters */
.filters { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; display: grid; gap: 10px; }
.frow { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; }
.frow > label { font-size: 12.5px; font-weight: 700; color: var(--muted); min-width: 3.5em; }
.chip { border: 1px solid var(--line); background: transparent; border-radius: 999px; padding: 2px 12px; font-size: 13.5px; cursor: pointer; }
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); font-weight: 700; }
.field { border: 1px solid var(--line); background: var(--bg); border-radius: 8px; padding: 6px 10px; min-width: 0; }
input.field { flex: 1 1 240px; }
.count { font-size: 13px; color: var(--muted); margin: 14px 0 0; }
.more-btn { display: block; margin: 16px auto 0; padding: 8px 20px; border: 1px solid var(--line); background: var(--surface); border-radius: 8px; cursor: pointer; }

/* about */
.prose { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 8px 18px 16px; }
.prose h3 { font-size: 16px; margin: 18px 0 6px; }
.prose p, .prose li { font-size: 15px; margin: 4px 0; }
.prose li { padding-left: 1em; text-indent: -1em; }
.prose li::before { content: "・"; }

/* events and reads */
.lead { margin: 0 0 14px; color: var(--muted); font-size: 15px; }
.stack { display: grid; gap: 14px; }
.stack .card { margin-bottom: 0; }
.card.event { padding: 16px 18px; }
.ev-title { font-size: 19px !important; }
.reads { margin-top: 14px; padding-top: 12px; border-top: 1px solid var(--line); display: grid; gap: 12px; }
.reads-h { font-size: 13px; color: var(--muted); letter-spacing: .04em; }
.read { background: var(--bg); border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; }
.read h4 { font-size: 16px; margin: 4px 0; }
.read h4 a { color: var(--ink); text-decoration: none; }
.read h4 a:hover { color: var(--accent); text-decoration: underline; }
.why2 { margin: 4px 0 0; font-size: 14.5px; }
.learn { margin: 10px 0 0; padding: 10px 12px; border-left: 3px solid var(--warn); background: var(--warnb); border-radius: 0 8px 8px 0; font-size: 14.5px; }
.learn p { margin: 4px 0 0; }
.learn-h { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 13.5px; }
.badge.main { color: var(--accent-ink); background: var(--accent); }
.badge.en { color: var(--accent); background: var(--soft); }
.rawcard { padding: 10px 14px; }
.rawcard h3 { font-size: 15.5px; margin: 2px 0; }

/* notes and AI */
.notebox { margin-top: 8px; display: grid; gap: 10px; }
.nl { display: grid; gap: 4px; }
.nl-t { font-size: 13px; font-weight: 700; color: var(--muted); }
textarea, .notebox input.field { width: 100%; border: 1px solid var(--line); background: var(--surface); border-radius: 8px; padding: 8px 10px; resize: vertical; line-height: 1.6; font: inherit; color: inherit; }
.note-toggle > summary { color: var(--muted); }
.btn { border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink); border-radius: 8px; padding: 6px 14px; cursor: pointer; font-weight: 700; font-size: 14px; }
.btn.ghost { background: transparent; color: var(--accent); }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.ai { border-top: 1px dashed var(--line); padding-top: 10px; display: grid; gap: 8px; }
.ai-row { display: flex; flex-wrap: wrap; gap: 6px 8px; align-items: center; }
.ai-row input.field { flex: 1 1 220px; }
.ai-item { background: var(--soft); border-radius: 8px; padding: 8px 12px; margin-top: 6px; }
.ai-text, .pre { white-space: pre-wrap; font-size: 14.5px; margin-top: 4px; }
.prompt-copy { font-size: 12.5px; }
.inline-card { margin-top: 10px; }
.inline-card > summary, .note-card > summary { cursor: pointer; font-weight: 700; font-size: 14.5px; }
.form { display: grid; gap: 8px; margin: 10px 0; }
.form label { display: grid; gap: 4px; font-size: 13px; font-weight: 700; color: var(--muted); }
.form .field { width: 100%; }
.todo li { padding: 8px 0; border-bottom: 1px solid var(--line); font-size: 14.5px; }
[hidden] { display: none !important; }
.offscreen { position: fixed; left: -9999px; }
.more .inner { margin-top: 10px; }
#status { position: fixed; right: 14px; bottom: 14px; z-index: 9; display: block; background: var(--ink); color: var(--bg); padding: 6px 14px; border-radius: 8px; font-size: 13px; }
#status.err { background: var(--new); color: #fff; }

/* tables */
.tablewrap { overflow-x: auto; }
.tbl { width: 100%; border-collapse: collapse; font-size: 13.5px; background: var(--surface); border: 1px solid var(--line); }
.tbl th, .tbl td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.tbl th { color: var(--muted); font-size: 12.5px; white-space: nowrap; }

.foot { padding-top: 0; padding-bottom: 40px; font-size: 12.5px; color: var(--muted); }

@media (max-width: 560px) {
  body { font-size: 15px; }
  .hero h1 { font-size: 22px; }
  #tabs a { padding: 8px 10px 10px; font-size: 14px; }
}
@media print { .top, .filters, .more-btn { display: none; } details.more > summary { display: none; } }
.weekbox { margin: 8px 0; }
.weekbox > summary { cursor: pointer; font-weight: 700; padding: 6px 0; }
.weekbox > summary .cnt { margin-left: 8px; font-weight: 400; color: var(--muted); font-size: 13px; }

/* compact event cards */
.stack { gap: 8px; }
.card.event { padding: 10px 14px; }
.card.event .ev-title { font-size: 16px !important; margin: 4px 0 2px; line-height: 1.4; }
.card.event .sum { font-size: 14px; margin-top: 4px; line-height: 1.6; }
.card.event .meta { font-size: 12px; gap: 4px 6px; }
.card.event details.inline { margin-top: 4px; }
.card.event .reads { margin-top: 8px; padding-top: 8px; gap: 8px; }
.card.event .reads-h { display: none; }
.card.event .read { padding: 8px 10px; }
.card.event .read h4 { font-size: 14.5px; margin: 2px 0; line-height: 1.4; }
.card.event .why2 { font-size: 13px; margin-top: 2px; }
.card.event .tags { margin-top: 6px; gap: 4px; }
.card.event .tag { font-size: 11.5px; }
.card.event details.more { margin-top: 4px; }
.card.event details.more > summary, .card.event details.inline > summary { font-size: 12.5px; }
.weekbox > summary { padding: 4px 0; }

/* round 3 hooks: hidden unless a theme turns them on */
.rank, .why1 { display: none; }