:root {
  --bg: #f6f5f1; --panel: #ffffff; --text: #23211f; --muted: #6b665f; --line: #dcd8cf;
  --accent: #b5532f; --accent-text: #ffffff; --link: #1f5fa8; --row: #faf9f6;
  --basic: #8a8a8a; --n: #7d8590; --r: #2f7dd1; --sr: #8e4fd0; --ssr: #c8960c; --ur: #d6334a;
  --sidebar: 240px;
  --mc-floor: #d9ccaa; --mc-grid: rgba(0,0,0,.14); --mc-wall: #3a3631; --mc-rock: #8d887f; --mc-water: #4a8fd0;
  --mc-low: #a07a47; --mc-goal: #e3bd3c; --mc-start: #e8708f;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17181b; --panel: #202226; --text: #ebe8e2; --muted: #a09b92; --line: #35383d;
    --accent: #d9703f; --accent-text: #1a1210; --link: #7fb2ee; --row: #25282c;
    --mc-floor: #6b6250; --mc-grid: rgba(255,255,255,.12); --mc-wall: #121110; --mc-rock: #8a857c; --mc-water: #2f6ba3;
    --mc-low: #8a6a3c; --mc-goal: #c9a02c; --mc-start: #d9608a;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background:
    radial-gradient(ellipse at 92% 4%, rgba(56, 151, 255, .1), transparent 34rem),
    radial-gradient(ellipse at 4% 28%, rgba(255, 171, 83, .12), transparent 31rem),
    linear-gradient(135deg, #faf6ee 0%, var(--bg) 54%, #edf4fb 100%); color: var(--text); line-height: 1.6;
  font-family: system-ui, -apple-system, "Segoe UI", "Hiragino Sans", "Noto Sans", "Noto Sans JP", sans-serif; }
a { color: var(--link); }
img { max-width: 100%; height: auto; }
h1 { font-size: 1.6rem; margin: 0 0 .6rem; line-height: 1.3; }
h2 { font-size: 1.25rem; margin: 2rem 0 .6rem; padding-bottom: .25rem; border-bottom: 2px solid var(--line); }
h3 { font-size: 1.05rem; margin: 1.4rem 0 .4rem; }

/* Layout: mobile first (top bar + collapsible menu), sidebar from 900px. */
.topbar { position: sticky; top: 0; z-index: 20; display: flex; align-items: center; justify-content: space-between;
  gap: .5rem; padding: .5rem 16px; background: rgba(255, 255, 255, .82); border-bottom: 1px solid rgba(73, 93, 125, .14); backdrop-filter: blur(16px); }
.topbar .brand { font-weight: 700; text-decoration: none; color: var(--text); }
#menu-toggle { font: inherit; padding: .35rem .7rem; border: 1px solid var(--line); background: var(--bg);
  color: var(--text); border-radius: 6px; cursor: pointer; }
.sidebar { display: none; background: rgba(255, 255, 255, .82); border-bottom: 1px solid rgba(73, 93, 125, .14); padding: .5rem 16px 1rem; backdrop-filter: blur(16px); }
.sidebar.open { display: block; }
.sidebar .brand { display: none; }
.sidebar nav a { display: block; padding: .5rem .6rem; border-radius: 6px; color: var(--text); text-decoration: none; }
.sidebar nav a:hover { background: var(--row); }
.sidebar nav a.current { background: var(--accent); color: var(--accent-text); font-weight: 600; }
.sidebar .langs { margin-top: .8rem; }
.sidebar select { width: 100%; font: inherit; padding: .4rem; background: var(--bg); color: var(--text); border: 1px solid var(--line); border-radius: 6px; }
.banner-side { display: none; }
main { padding: 16px; max-width: 1100px; }
.banner-inline { margin: 1.5rem 0; }
footer.site-footer { padding: 16px; color: var(--muted); font-size: .85rem; border-top: 1px solid var(--line); margin-top: 2rem; }
@media (min-width: 900px) {
  .topbar { display: none; }
  .sidebar { display: block; position: fixed; top: 0; left: 0; bottom: 0; width: var(--sidebar); overflow-y: auto;
    border-bottom: 0; border-right: 1px solid rgba(73, 93, 125, .14); padding: 1rem; }
  .sidebar .brand { display: block; font-weight: 700; font-size: 1.1rem; margin-bottom: 1rem; color: var(--text); text-decoration: none; }
  .content { margin-left: var(--sidebar); }
  main { padding: 28px 32px; }
  .banner-side { display: block; margin-top: 1.2rem; }
  .banner-inline { display: none; }
  footer.site-footer { padding-left: 32px; }
}
@media (max-width: 899px) {
  .topbar { min-height: 56px; }
  .sidebar.open {
    position: fixed;
    z-index: 30;
    inset: 56px 0 0;
    overflow-y: auto;
    overscroll-behavior: contain;
    border-bottom: 0;
    box-shadow: 0 16px 30px rgba(12, 21, 34, .26);
  }
}

.crumbs { font-size: .85rem; color: var(--muted); margin-bottom: .8rem; }
.crumbs a { color: var(--muted); }
.lead { color: var(--muted); margin-top: 0; }

/* Tables */
.table-wrap { overflow-x: auto; margin: .6rem 0 1rem; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); }
table { border-collapse: collapse; width: 100%; font-size: .93rem; }
th, td { padding: .45rem .7rem; text-align: left; vertical-align: top; border-bottom: 1px solid var(--line); }
th { background: var(--row); white-space: nowrap; font-weight: 600; }
tr:last-child td { border-bottom: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.kv th { width: 11rem; background: var(--row); }
.icon { width: 40px; height: 40px; object-fit: contain; vertical-align: middle; background: var(--row); border-radius: 6px; }
.icon.big { width: 96px; height: 96px; }
.icon.ph { display: inline-block; background: var(--line); }
.namecell { display: flex; gap: .6rem; align-items: center; min-width: 11rem; }

/* Rarity chips */
.chip { display: inline-block; padding: 0 .55rem; border-radius: 999px; font-size: .78rem; font-weight: 700; color: #fff; line-height: 1.5; background: var(--basic); }
.chip.basic { background: var(--basic); }
.chip.n { background: var(--n); }
.chip.r { background: var(--r); }
.chip.sr { background: var(--sr); }
.chip.ssr { background: var(--ssr); color: #231a00; }
.chip.ur { background: linear-gradient(90deg, #d6334a, #e08a1e, #d6c21e, #35a86a, #2f7dd1, #8e4fd0); }
.tag { display: inline-block; padding: 0 .5rem; border-radius: 6px; font-size: .8rem; background: var(--row); border: 1px solid var(--line); margin: 0 .25rem .25rem 0; }
.pickup { background: color-mix(in srgb, var(--ssr) 22%, transparent); border-radius: 6px; padding: 0 .35rem; }
.note { color: var(--muted); font-size: .88rem; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: .7rem; padding: 0; list-style: none; }
.cards li { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: .7rem .9rem; }
.cards a { font-weight: 600; text-decoration: none; }
.btn { display: inline-block; padding: .6rem 1.2rem; border-radius: 8px; background: var(--accent); color: var(--accent-text); font-weight: 700; text-decoration: none; }
.banner a { display: block; padding: .7rem .9rem; border: 1px solid var(--line); background: var(--panel); border-radius: 8px; text-decoration: none; color: var(--text); font-size: .9rem; }
.banner img { display: block; margin-bottom: .4rem; border-radius: 6px; }
.banner + .banner { margin-top: .6rem; }
.chart-sub { margin: 0 0 .3rem; }
.two-col { display: flex; gap: 1rem; flex-wrap: wrap; align-items: flex-start; }
details.langs { margin-top: .9rem; }
details.langs summary { cursor: pointer; padding: .3rem 0; }
.lang-list { list-style: none; margin: .3rem 0 0; padding: 0; columns: 2; font-size: .9rem; }
.lang-list a[aria-current] { font-weight: 700; }
h4 { margin: 1.1rem 0 .3rem; }

/* Shared guide-page visual system. */
@media (prefers-color-scheme: dark) {
  body { background:
      radial-gradient(ellipse at 92% 4%, rgba(41, 118, 201, .18), transparent 34rem),
      radial-gradient(ellipse at 4% 28%, rgba(179, 103, 47, .16), transparent 31rem),
      linear-gradient(135deg, #181d27 0%, var(--bg) 54%, #1b2935 100%); }
  .topbar, .sidebar { background: rgba(27, 32, 42, .86); border-color: rgba(226, 233, 244, .1); }
}
body:not(.home-ja) .content main { width: min(100%, 1160px); max-width: 1160px; margin-inline: auto; }
body:not(.home-ja) .content main > h1 { position: relative; margin: 0 0 1.2rem; padding: 0 0 .75rem; color: #253246; font-size: clamp(1.7rem, 3vw, 2.25rem); letter-spacing: .012em; }
body:not(.home-ja) .content main > h1::after { position: absolute; inset: auto auto 0 0; width: min(10rem, 45%); height: 3px; border-radius: 99px; background: linear-gradient(90deg, #c87843, #8eb7dc 78%, transparent); content: ""; }
body:not(.home-ja) .content main h2 { margin: 2rem 0 .75rem; padding: 0 0 .5rem; border: 0; background: linear-gradient(90deg, rgba(200, 120, 67, .64), rgba(113, 162, 207, .5) 45%, transparent 90%) bottom left / 100% 2px no-repeat; color: #35445a; font-size: clamp(1.2rem, 2vw, 1.55rem); letter-spacing: .01em; }
body:not(.home-ja) .content main h3 { color: #3c4d64; }
body:not(.home-ja) .content main h4 { margin: 1.2rem 0 .45rem; padding: .18rem 0 .18rem .7rem; border-left: 3px solid #82a8cd; color: #40546b; font-size: 1rem; }
body:not(.home-ja) .content main > .lead { padding: .9rem 1rem; border: 1px solid rgba(255, 255, 255, .82); border-radius: 14px; background: linear-gradient(110deg, rgba(255, 255, 255, .86), rgba(235, 243, 251, .74)); box-shadow: 0 10px 26px rgba(52, 67, 92, .08); }
body:not(.home-ja) .crumbs { display: inline-block; padding: .25rem .65rem; border: 1px solid rgba(112, 141, 178, .16); border-radius: 999px; background: rgba(255, 255, 255, .58); }
body:not(.home-ja) .cards { gap: .85rem; }
body:not(.home-ja) .cards li { border: 1px solid transparent; border-radius: 14px; background: linear-gradient(145deg, rgba(255, 255, 255, .94), rgba(245, 248, 253, .84)) padding-box, linear-gradient(135deg, rgba(233, 164, 105, .48), rgba(113, 162, 207, .42)) border-box; box-shadow: 0 9px 23px rgba(43, 58, 83, .09); transition: transform .18s ease, box-shadow .18s ease; }
body:not(.home-ja) .cards li:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(43, 58, 83, .14); }
body:not(.home-ja) .cards a { color: #29384d; }
body:not(.home-ja) .table-wrap { margin: .75rem 0 1.25rem; overflow-x: auto; border: 1px solid rgba(255, 255, 255, .78); border-radius: 14px; background: rgba(255, 255, 255, .82); box-shadow: 0 12px 28px rgba(43, 58, 83, .09); }
body:not(.home-ja) table { background: rgba(255, 255, 255, .72); }
body:not(.home-ja) th { background: linear-gradient(105deg, #29394e, #3b526c); color: #fff; }
body:not(.home-ja) .kv th { background: linear-gradient(105deg, #39495e, #536a82); }
body:not(.home-ja) tbody tr:nth-child(even) td { background: rgba(226, 237, 248, .3); }
body:not(.home-ja) tbody tr:hover td { background: rgba(232, 241, 250, .8); }
body:not(.home-ja) .tag { border-color: rgba(112, 141, 178, .2); border-radius: 999px; background: linear-gradient(100deg, rgba(255, 229, 202, .65), rgba(219, 236, 252, .72)); color: #53647a; }
body:not(.home-ja) .two-col { gap: 1.25rem; padding: clamp(.9rem, 2vw, 1.4rem); border: 1px solid rgba(255, 255, 255, .82); border-radius: 18px; background: linear-gradient(110deg, rgba(255, 255, 255, .9), rgba(235, 243, 251, .76)); box-shadow: 0 12px 30px rgba(43, 58, 83, .1); }
body:not(.home-ja) .two-col > div { flex: 1 1 18rem; }
body:not(.home-ja) .btn { background: linear-gradient(110deg, #c6653c, #df914c 58%, #7197bd); box-shadow: 0 8px 18px rgba(81, 91, 113, .18); transition: transform .18s ease, box-shadow .18s ease; }
body:not(.home-ja) .btn:hover { transform: translateY(-2px); box-shadow: 0 12px 24px rgba(81, 91, 113, .23); }
body:not(.home-ja) .calc { padding: 1rem; border: 1px solid rgba(255, 255, 255, .82); border-radius: 16px; background: linear-gradient(110deg, rgba(255, 255, 255, .9), rgba(235, 243, 251, .76)); box-shadow: 0 12px 28px rgba(43, 58, 83, .09); }
body:not(.home-ja) .calc select, body:not(.home-ja) .calc input { border-radius: 8px; }
body:not(.home-ja) pre.formula { border-color: rgba(112, 141, 178, .18); border-radius: 12px; background: linear-gradient(115deg, rgba(246, 242, 235, .9), rgba(231, 240, 250, .84)); }
body:not(.home-ja) .banner a, body:not(.home-ja) .pager a { border-color: rgba(255, 255, 255, .78); border-radius: 12px; background: linear-gradient(125deg, rgba(255, 255, 255, .9), rgba(235, 243, 251, .78)); box-shadow: 0 8px 20px rgba(43, 58, 83, .08); }
body:not(.home-ja) .floor { margin: 0 0 1.5rem; padding: clamp(.8rem, 2vw, 1.2rem); border: 1px solid rgba(255, 255, 255, .82); border-radius: 18px; background: linear-gradient(145deg, rgba(255, 255, 255, .85), rgba(239, 245, 251, .7)); box-shadow: 0 12px 28px rgba(43, 58, 83, .08); }
body:not(.home-ja) .floor > h2:first-child { margin-top: 0; }
body:not(.home-ja) .floor-jump a { border-color: rgba(112, 141, 178, .2); background: linear-gradient(115deg, rgba(255, 255, 255, .94), rgba(225, 238, 250, .82)); box-shadow: 0 3px 9px rgba(43, 58, 83, .07); }
body:not(.home-ja) .legend-box { padding: .7rem .9rem; border: 1px solid rgba(255, 255, 255, .78); border-radius: 12px; background: rgba(255, 255, 255, .65); }
body:not(.home-ja) .legend-box summary { color: #35445a; }
body:not(.home-ja) .cave-group { overflow: hidden; border: 1px solid rgba(255, 255, 255, .82); border-radius: 13px; background: rgba(255, 255, 255, .78); box-shadow: 0 7px 18px rgba(43, 58, 83, .07); }
body:not(.home-ja) .cave-group summary { padding: .65rem .85rem; background: linear-gradient(105deg, #29394e, #3b526c); color: #fff; }
body:not(.home-ja) .cave-group[open] > :not(summary) { margin-inline: .85rem; }
@media (prefers-color-scheme: dark) {
  body:not(.home-ja) .content main > h1, body:not(.home-ja) .content main h2, body:not(.home-ja) .content main h3, body:not(.home-ja) .content main h4 { color: #e2e9f2; }
  body:not(.home-ja) .content main > h1::after { background: linear-gradient(90deg, #d18a62, #80a8d0 78%, transparent); }
  body:not(.home-ja) .content main h2 { background-image: linear-gradient(90deg, rgba(209, 138, 98, .68), rgba(112, 157, 199, .55) 45%, transparent 90%); }
  body:not(.home-ja) .content main > .lead, body:not(.home-ja) .two-col, body:not(.home-ja) .legend-box { border-color: rgba(226, 233, 244, .1); background: linear-gradient(110deg, rgba(34, 41, 53, .92), rgba(33, 47, 62, .8)); box-shadow: 0 12px 30px rgba(0, 0, 0, .18); }
  body:not(.home-ja) .crumbs { border-color: rgba(226, 233, 244, .1); background: rgba(34, 41, 53, .66); }
  body:not(.home-ja) .cards li { background: linear-gradient(145deg, rgba(40, 47, 60, .96), rgba(34, 44, 58, .92)) padding-box, linear-gradient(135deg, rgba(209, 140, 87, .44), rgba(91, 143, 194, .4)) border-box; }
  body:not(.home-ja) .cards a { color: #eef3fa; }
  body:not(.home-ja) .table-wrap { border-color: rgba(226, 233, 244, .1); background: rgba(30, 37, 48, .84); box-shadow: 0 12px 30px rgba(0, 0, 0, .22); }
  body:not(.home-ja) table { background: rgba(35, 42, 53, .72); }
  body:not(.home-ja) th, body:not(.home-ja) .kv th, body:not(.home-ja) .cave-group summary { background: linear-gradient(105deg, #182536, #293d54); color: #f3f6fa; }
  body:not(.home-ja) tbody tr:nth-child(even) td { background: rgba(130, 155, 185, .08); }
  body:not(.home-ja) tbody tr:hover td { background: rgba(117, 151, 189, .16); }
  body:not(.home-ja) .tag { border-color: rgba(206, 220, 240, .13); background: linear-gradient(100deg, rgba(113, 75, 48, .38), rgba(49, 82, 111, .44)); color: #d1d9e5; }
  body:not(.home-ja) .calc, body:not(.home-ja) pre.formula { border-color: rgba(226, 233, 244, .1); background: linear-gradient(110deg, rgba(34, 41, 53, .92), rgba(33, 47, 62, .8)); box-shadow: 0 12px 30px rgba(0, 0, 0, .18); }
  body:not(.home-ja) .content main h4 { border-color: #789dc4; }
  body:not(.home-ja) .banner a, body:not(.home-ja) .pager a, body:not(.home-ja) .floor-jump a, body:not(.home-ja) .cave-group { border-color: rgba(226, 233, 244, .1); background: linear-gradient(125deg, rgba(35, 42, 55, .92), rgba(32, 45, 58, .82)); color: #eef3fa; }
  body:not(.home-ja) .floor { border-color: rgba(226, 233, 244, .1); background: linear-gradient(145deg, rgba(34, 41, 53, .86), rgba(29, 42, 55, .76)); box-shadow: 0 12px 30px rgba(0, 0, 0, .18); }
}
@media (prefers-reduced-motion: reduce) {
  body:not(.home-ja) .cards li, body:not(.home-ja) .btn { transition: none; }
  body:not(.home-ja) .cards li:hover, body:not(.home-ja) .btn:hover { transform: none; }
}

/* Story: floor maps */
.sidebar nav .subnav { margin: 0 0 .3rem 1rem; border-left: 2px solid var(--line); }
.sidebar nav .subnav a { padding: .25rem .6rem; font-size: .9rem; }
.floor { margin-bottom: 2.5rem; }
.floor-jump { display: flex; flex-wrap: wrap; gap: .4rem; margin: .8rem 0; }
.floor-jump a { padding: .15rem .6rem; border: 1px solid var(--line); border-radius: 999px; background: var(--panel); text-decoration: none; font-size: .9rem; }
.map-wrap { overflow-x: auto; margin: .4rem 0 1rem; }
.floormap { display: block; width: 100%; min-width: 320px; max-width: 640px; height: auto; border: 1px solid var(--line); border-radius: 6px; }
.mc-ebg { fill: rgba(255,255,255,.35); }
.mc-badge { fill: var(--accent); stroke: #fff; stroke-width: 1; }
.mc-num { fill: #fff; font-size: 8px; font-weight: 700; font-family: system-ui, sans-serif; }
.mc-x { fill: #fff; stroke: #000; stroke-width: 2.4px; paint-order: stroke; font-size: 9px; font-weight: 700; font-family: system-ui, sans-serif; }
.mc-e { cursor: pointer; }
.legend-box { margin: .8rem 0 1.4rem; }
.legend-box summary { cursor: pointer; font-weight: 600; }
.legend { list-style: none; margin: .5rem 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: .3rem .8rem; font-size: .9rem; }
.legend li { display: flex; gap: .5rem; align-items: center; }
.mc-key { flex: none; border: 1px solid var(--line); border-radius: 3px; }
.enemy-table td, .enemy-table th { font-size: .88rem; }
.enemy-table ul.tight { margin: 0; padding-left: 1.1rem; }
.mc-num-cell { display: inline-block; min-width: 1.4rem; text-align: center; border-radius: 999px; background: var(--accent); color: var(--accent-text); font-weight: 700; font-size: .8rem; }
.pager { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .6rem; margin: 2rem 0 1rem; }
.pager a { padding: .4rem .9rem; border: 1px solid var(--line); border-radius: 8px; background: var(--panel); text-decoration: none; }
.cave-group { margin: .6rem 0; }
.cave-group summary { cursor: pointer; font-weight: 600; padding: .3rem 0; }

/* Spoilers: blurred until tapped (assets/site.js adds .revealed) */
.spoiler:not(.revealed) { filter: blur(7px); cursor: pointer; user-select: none; }
.spoiler.revealed { filter: none; }
.enemy-table td:nth-child(6), .enemy-table td:nth-child(7), .enemy-table td:nth-child(8), .enemy-table td:nth-child(9) { min-width: 8rem; }

/* stage 3: sidebar groups, formulas, mission checklist */
.sidebar nav .nav-group { margin: 1rem .1rem .35rem; padding: .48rem .7rem; border: 1px solid rgba(255, 255, 255, .08); border-radius: 7px; background: linear-gradient(110deg, #172536 0%, #30455f 52%, #1b3048 100%); box-shadow: inset 0 1px rgba(255, 255, 255, .08), 0 3px 10px rgba(15, 25, 40, .16); color: #fff; font-size: 1.05rem; font-weight: 700; letter-spacing: .02em; line-height: 1.35; }
pre.formula { background: var(--row); border: 1px solid var(--line); border-radius: 6px; padding: .6rem .8rem; overflow-x: auto; white-space: pre-wrap; }
label.mc { display: inline-flex; align-items: center; gap: .4rem; cursor: pointer; }
input.mc { width: 1.1rem; height: 1.1rem; }
tr.mc-done td { opacity: .55; }

/* Search box (sidebar / mobile menu) */
.search { margin: 0 0 .8rem; position: relative; }
.search[hidden] { display: none; }
.search input { width: 100%; font: inherit; padding: .5rem .7rem; border: 1px solid var(--line); border-radius: 6px; background: var(--bg); color: var(--text); }
.search-results { list-style: none; margin: .4rem 0 0; padding: 0; background: var(--panel); border: 1px solid var(--line); border-radius: 6px; max-height: 60vh; overflow-y: auto; }
.search-results[hidden] { display: none; }
.search-results li { border-bottom: 1px solid var(--line); }
.search-results li:last-child { border-bottom: 0; }
.search-results a { display: block; padding: .4rem .6rem; text-decoration: none; color: var(--text); }
.search-results a:hover, .search-results a:focus { background: var(--row); outline: 0; }
.search-results .rt { display: block; font-size: .92rem; line-height: 1.35; }
.search-results .rs { display: block; font-size: .75rem; color: var(--muted); }
.search-results .none { padding: .5rem .6rem; color: var(--muted); font-size: .9rem; }

/* COMBO calculator */
.calc { display: grid; gap: .7rem; grid-template-columns: 1fr; max-width: 560px; margin: 1rem 0; }
.calc label { display: grid; gap: .25rem; font-weight: 600; font-size: .92rem; }
.calc select, .calc input { font: inherit; padding: .45rem .6rem; border: 1px solid var(--line); border-radius: 6px; background: var(--panel); color: var(--text); width: 100%; }
.calc small { font-weight: 400; }
@media (min-width: 600px) { .calc { grid-template-columns: 1fr 1fr; } }
tr.total td { background: var(--row); }
pre.formula { overflow-x: auto; padding: .7rem .9rem; background: var(--panel); border: 1px solid var(--line); border-radius: 8px; white-space: pre-wrap; }

/* Japanese landing page: warm village light meets the blue cave artwork. */
body.home-ja {
  background:
    radial-gradient(ellipse at 86% 9%, rgba(56, 151, 255, .18), transparent 32rem),
    radial-gradient(ellipse at 7% 38%, rgba(255, 171, 83, .2), transparent 30rem),
    linear-gradient(135deg, #faf5eb 0%, #f1f4fa 52%, #edf5fc 100%);
}
body.home-ja .topbar,
body.home-ja .sidebar {
  background: rgba(255, 255, 255, .78);
  border-color: rgba(73, 93, 125, .14);
  backdrop-filter: blur(16px);
}
body.home-ja main {
  width: min(100%, 1280px);
  max-width: 1280px;
  margin-inline: auto;
  padding: clamp(16px, 3vw, 42px);
}
.jp-home { display: grid; gap: clamp(1.2rem, 3vw, 2.25rem); }
.jp-app-section { min-width: 0; }
.jp-app-track {
  display: flex;
  gap: 1rem;
  overflow-x: auto;
  padding: .3rem .15rem .85rem;
  scroll-behavior: smooth;
  scroll-snap-type: x mandatory;
  scrollbar-color: rgba(75, 101, 133, .42) transparent;
  scrollbar-width: thin;
  overscroll-behavior-inline: contain;
}
.jp-app-card {
  display: flex;
  flex: 0 0 32%;
  min-width: 260px;
  min-height: 112px;
  align-items: center;
  gap: .85rem;
  padding: .9rem;
  border: 1px solid transparent;
  border-radius: 16px;
  background: linear-gradient(130deg, rgba(255, 255, 255, .96), rgba(236, 243, 251, .9)) padding-box,
    linear-gradient(135deg, rgba(225, 166, 105, .62), rgba(101, 151, 199, .56)) border-box;
  box-shadow: 0 9px 24px rgba(43, 58, 83, .1);
  color: #29384d;
  text-decoration: none;
  scroll-snap-align: start;
  transition: transform .18s ease, box-shadow .18s ease;
}
.jp-app-card:hover { transform: translateY(-2px); box-shadow: 0 14px 28px rgba(43, 58, 83, .16); }
.jp-app-card:focus-visible { outline: 3px solid #2677c8; outline-offset: 3px; }
.jp-app-card > img { width: 58px; height: 58px; flex: 0 0 58px; border-radius: 14px; object-fit: cover; box-shadow: 0 3px 10px rgba(27, 39, 55, .16); }
.jp-app-card-copy { display: grid; min-width: 0; flex: 1 1 auto; gap: .3rem; }
.jp-app-card-copy strong { display: -webkit-box; overflow: hidden; color: #26384c; font-size: .94rem; line-height: 1.35; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.jp-app-card-copy > span { display: -webkit-box; overflow: hidden; color: #657286; font-size: .8rem; line-height: 1.45; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
.jp-app-hint { margin: .1rem .2rem 0; color: #738093; font-size: .77rem; }
.jp-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin: 0;
  border: 1px solid rgba(255, 255, 255, .72);
  border-radius: clamp(18px, 2.3vw, 30px);
  background: #10233b;
  box-shadow: 0 24px 60px rgba(35, 48, 70, .2), 0 5px 16px rgba(32, 51, 81, .12);
}
.jp-hero::after {
  position: absolute;
  z-index: 1;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .22), inset 0 -30px 55px rgba(8, 19, 38, .12);
  content: "";
  pointer-events: none;
}
.jp-feature-art { display: block; width: 100%; height: auto; aspect-ratio: 1795 / 876; }
.jp-home-intro {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.4rem;
  padding: clamp(1.1rem, 3vw, 1.8rem) clamp(1.2rem, 3vw, 2rem);
  border: 1px solid rgba(255, 255, 255, .82);
  border-radius: 22px;
  background: linear-gradient(110deg, rgba(255, 255, 255, .9), rgba(255, 255, 255, .68) 57%, rgba(230, 242, 255, .8));
  box-shadow: 0 14px 34px rgba(52, 67, 92, .1);
  backdrop-filter: blur(12px);
}
.jp-home h1 { margin: 0; font-size: clamp(1.55rem, 3vw, 2.35rem); letter-spacing: .015em; }
.jp-home-copy .lead { max-width: 58rem; margin: .55rem 0 0; color: #5a6473; }
.jp-store-btn {
  flex: none;
  padding: .8rem 1.35rem;
  border: 1px solid rgba(255, 255, 255, .46);
  background: linear-gradient(110deg, #cc6539, #e28b42 58%, #d77646);
  box-shadow: 0 9px 20px rgba(186, 86, 43, .22);
  transition: transform .18s ease, box-shadow .18s ease, filter .18s ease;
}
.jp-store-btn:hover { transform: translateY(-2px); box-shadow: 0 13px 25px rgba(186, 86, 43, .28); filter: saturate(1.08); }
.jp-store-btn:focus-visible, .jp-guide-card a:focus-visible { outline: 3px solid #2677c8; outline-offset: 4px; }
.jp-guide-section { padding: clamp(.2rem, 1vw, .5rem) 0 .6rem; }
.jp-section-heading { display: flex; align-items: center; gap: 1rem; margin-bottom: .9rem; }
.jp-home .jp-section-heading h2 { margin: 0; padding: 0; border: 0; font-size: clamp(1.25rem, 2vw, 1.65rem); letter-spacing: .02em; }
.jp-section-mark { flex: 1; height: 2px; border-radius: 99px; background: linear-gradient(90deg, rgba(211, 119, 68, .76), rgba(103, 164, 216, .52), transparent); }
.jp-guide-group { margin-top: 1.35rem; }
.jp-guide-group h3 { margin: 0 0 .7rem; color: #39485b; font-size: 1.05rem; letter-spacing: .025em; }
.jp-guide-group--beginner { --jp-accent-line: linear-gradient(90deg, #916116, #f4d477 44%, #fff0bd 58%, #c38a24); --jp-accent-glow: rgba(231, 186, 79, .36); }
.jp-guide-group--data { --jp-accent-line: linear-gradient(90deg, #28539c, #53bdf2 35%, #e1fcff 52%, #6c9aff 75%, #3157b4); --jp-accent-glow: rgba(101, 194, 255, .6); }
.jp-guide-group--stages { --jp-accent-line: linear-gradient(90deg, #711b2a, #d43245 42%, #ff9b8c 58%, #a82036); --jp-accent-glow: rgba(225, 65, 79, .34); }
.jp-guide-group--rules { --jp-accent-line: linear-gradient(90deg, #20573c, #48a96d 42%, #b8ed9b 58%, #2d7750); --jp-accent-glow: rgba(88, 190, 123, .34); }
.jp-guide-group--tools { --jp-accent-line: linear-gradient(90deg, #492577, #8e55c4 42%, #ddb4ff 58%, #63349d); --jp-accent-glow: rgba(165, 107, 226, .38); }
.jp-category-banner { display: block; width: 100%; aspect-ratio: 3 / 1; margin: 0 0 .85rem; border: 1px solid rgba(255, 255, 255, .8); border-radius: 15px; object-fit: cover; box-shadow: 0 12px 28px rgba(43, 58, 83, .13); }
.jp-guide-cards { grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: .9rem; }
.jp-guide-cards li.jp-guide-card { padding: 0; }
.jp-guide-card {
  position: relative;
  display: flex;
  min-height: 0;
  flex-direction: column;
  overflow: hidden;
  padding: 0;
  border: 1px solid transparent;
  border-radius: 16px;
  background: linear-gradient(145deg, rgba(255, 255, 255, .96), rgba(245, 248, 253, .86)) padding-box,
    linear-gradient(135deg, rgba(233, 164, 105, .56), rgba(113, 162, 207, .48)) border-box;
  box-shadow: 0 9px 23px rgba(43, 58, 83, .1);
  transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.jp-guide-card:hover { transform: translateY(-3px); box-shadow: 0 16px 30px rgba(43, 58, 83, .16); }
.jp-card-title { position: relative; display: block; width: 100%; box-sizing: border-box; padding: .82rem 2.4rem .82rem 1rem; background: linear-gradient(110deg, #172536 0%, #30455f 52%, #1b3048 100%); color: #fff; font-size: 1rem; font-weight: 700; line-height: 1.42; text-decoration: none; }
.jp-card-title::before { position: absolute; inset: auto 0 0; height: 3px; background: var(--jp-accent-line); box-shadow: 0 -1px 8px var(--jp-accent-glow); content: ""; pointer-events: none; }
.jp-card-title::after { position: absolute; top: .82rem; right: 1rem; color: #d9e5f2; content: "↗"; font-size: 1rem; }
.jp-card-title:hover { background: linear-gradient(110deg, #243b54 0%, #3c5a78 52%, #29445f 100%); color: #fff; }
.jp-card-note { display: block; flex: 1; margin: 0; padding: .8rem 1rem .95rem; color: #677385; font-size: .86rem; line-height: 1.55; }
.jp-card-title:focus-visible { outline: 3px solid #2677c8; outline-offset: -3px; }
@media (prefers-color-scheme: dark) {
  body.home-ja {
    background:
      radial-gradient(ellipse at 86% 9%, rgba(41, 118, 201, .22), transparent 32rem),
      radial-gradient(ellipse at 7% 38%, rgba(179, 103, 47, .2), transparent 30rem),
      linear-gradient(135deg, #181d27 0%, #202631 52%, #1b2935 100%);
  }
  body.home-ja .topbar, body.home-ja .sidebar { background: rgba(27, 32, 42, .82); border-color: rgba(226, 233, 244, .1); }
  .jp-home-intro { border-color: rgba(207, 220, 241, .12); background: linear-gradient(110deg, rgba(35, 42, 55, .92), rgba(36, 45, 59, .8) 57%, rgba(32, 51, 68, .88)); }
  .jp-home-copy .lead { color: #c0c9d7; }
  .jp-guide-card { background: linear-gradient(145deg, rgba(40, 47, 60, .96), rgba(34, 44, 58, .92)) padding-box, linear-gradient(135deg, rgba(209, 140, 87, .52), rgba(91, 143, 194, .46)) border-box; }
  .jp-app-card { background: linear-gradient(130deg, rgba(40, 47, 60, .96), rgba(33, 45, 59, .92)) padding-box, linear-gradient(135deg, rgba(209, 140, 87, .48), rgba(91, 143, 194, .44)) border-box; color: #eef3fa; }
  .jp-app-card-copy strong { color: #edf2f8; }
  .jp-app-card-copy > span, .jp-app-hint { color: #b3bdca; }
  .jp-guide-group h3 { color: #dbe3ed; }
  .jp-category-banner { border-color: rgba(226, 233, 244, .14); box-shadow: 0 12px 28px rgba(0, 0, 0, .25); }
  .jp-card-title { background: linear-gradient(110deg, #101a25 0%, #1d2f42 52%, #132536 100%); color: #fff; }
  .jp-card-title:hover { background: linear-gradient(110deg, #1a2939 0%, #2a435a 52%, #203950 100%); color: #fff; }
  .jp-card-note { color: #b3bdca; }
}
@media (max-width: 620px) {
  body.home-ja main { padding: 14px 12px 24px; }
  .jp-home-intro { align-items: flex-start; flex-direction: column; gap: 1rem; border-radius: 18px; }
  .jp-app-track { gap: .75rem; margin-right: -12px; padding-right: 12px; }
  .jp-app-card { flex-basis: 86%; min-width: 0; min-height: 104px; gap: .7rem; padding: .75rem; }
  .jp-app-card > img { width: 52px; height: 52px; flex-basis: 52px; border-radius: 13px; }
  .jp-store-btn { align-self: flex-start; }
  .jp-guide-cards { grid-template-columns: 1fr; gap: .7rem; }
  .jp-guide-card { min-height: 0; }
  .jp-card-title { padding: .78rem 2.35rem .78rem .95rem; }
  .jp-card-note { padding: .72rem .95rem .85rem; }
}
@media (prefers-reduced-motion: reduce) {
  .jp-store-btn, .jp-guide-card, .jp-app-card { transition: none; }
  .jp-guide-card:hover, .jp-store-btn:hover, .jp-app-card:hover { transform: none; }
}