/* FUTURETRACE — light: 年鑑 (almanac) / dark: 観測所 (observatory) */
:root{
  color-scheme:light;
  --bg:#f6f2ea;--card:#fffdf8;--sunk:#efe9dd;--line:#e3dccd;--line2:#d4cbb8;
  --ink:#1d1a16;--ink2:#5e574c;--ink3:#8a8171;
  --fc:#c8553d;--ac:#2563a8;--band:rgba(37,99,168,.07);
  --s1:#c8553d;--s2:#7a4fa3;--s3:#d49a17;--s4:#2b9a7a;
  --rw:#7a4fa3;--rj:#2b9a7a;
  --good:#1f7a4d;--bad:#b23b2e;
  --accent:#c8553d;--chip:#1d1a16;--chip-ink:#f6f2ea;
  --sans:"Noto Sans JP","Noto Sans CJK JP","Hiragino Sans",system-ui,sans-serif;
  --head:"Noto Serif JP","Noto Serif CJK JP","Hiragino Mincho ProN",serif;
  --num:"Noto Serif JP","Noto Serif CJK JP",serif;
  --radius:4px;--card-border:1px 0;--card-bg:transparent;--card-pad:16px 0;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  color-scheme:dark;
  --bg:#0b1320;--card:#111c2d;--sunk:#0e1726;--line:#1f2d42;--line2:#2a3b55;
  --ink:#e9eef5;--ink2:#a3b1c4;--ink3:#6e7f96;
  --fc:#d7772a;--ac:#2f9fb3;--band:rgba(47,159,179,.09);
  --s1:#d7772a;--s2:#8f74de;--s3:#b08f1c;--s4:#d4577a;
  --rw:#8f74de;--rj:#2e9e80;
  --good:#4cc38a;--bad:#e8705f;
  --accent:#2f9fb3;--chip:#e9eef5;--chip-ink:#0b1320;
  --head:"Noto Sans JP","Noto Sans CJK JP",system-ui,sans-serif;
  --num:"IBM Plex Mono","DejaVu Sans Mono",ui-monospace,monospace;
  --radius:14px;--card-border:1px;--card-bg:var(--card);--card-pad:16px;
}}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#0b1320;--card:#111c2d;--sunk:#0e1726;--line:#1f2d42;--line2:#2a3b55;
  --ink:#e9eef5;--ink2:#a3b1c4;--ink3:#6e7f96;
  --fc:#d7772a;--ac:#2f9fb3;--band:rgba(47,159,179,.09);
  --s1:#d7772a;--s2:#8f74de;--s3:#b08f1c;--s4:#d4577a;
  --rw:#8f74de;--rj:#2e9e80;
  --good:#4cc38a;--bad:#e8705f;
  --accent:#2f9fb3;--chip:#e9eef5;--chip-ink:#0b1320;
  --head:"Noto Sans JP","Noto Sans CJK JP",system-ui,sans-serif;
  --num:"IBM Plex Mono","DejaVu Sans Mono",ui-monospace,monospace;
  --radius:14px;--card-border:1px;--card-bg:var(--card);--card-pad:16px;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);-webkit-font-smoothing:antialiased;-webkit-tap-highlight-color:transparent}
button{font:inherit;color:inherit}
a{color:var(--ac);text-decoration:none}
.num{font-family:var(--num);font-variant-numeric:tabular-nums}
.shell{height:100dvh;max-width:560px;margin:0 auto;display:flex;flex-direction:column;position:relative;background:var(--bg)}

/* masthead */
.mast{flex-shrink:0;display:flex;align-items:center;justify-content:space-between;gap:10px;padding:calc(10px + env(safe-area-inset-top)) 16px 10px;border-bottom:1px solid var(--line)}
.brand strong{display:block;font-family:var(--head);font-size:16px;letter-spacing:.02em}
.brand small{display:block;font-size:9px;letter-spacing:.2em;color:var(--ink3)}
.mast-tools{display:flex;align-items:center;gap:8px}
.seg{display:flex;background:var(--sunk);border:1px solid var(--line);border-radius:999px;padding:2px}
.seg button{border:0;background:transparent;padding:6px 11px;border-radius:999px;font-size:12px;font-weight:700;color:var(--ink2);cursor:pointer;min-height:32px}
.seg button[aria-checked="true"]{background:var(--chip);color:var(--chip-ink)}
.theme-btn{width:34px;height:34px;border-radius:50%;border:1px solid var(--line);background:var(--sunk);cursor:pointer;display:grid;place-items:center}
.theme-btn svg{width:16px;height:16px;fill:none;stroke:var(--ink2);stroke-width:1.8}

/* panes keep their own scroll position */
main{flex:1;min-height:0;position:relative}
.pane{position:absolute;inset:0;overflow-y:auto;overscroll-behavior:contain;display:none;-webkit-overflow-scrolling:touch}
.pane.active{display:block}
.inner{padding:0 0 32px}

/* type */
.eyebrow{font-size:11px;letter-spacing:.08em;color:var(--accent);font-weight:700;padding:18px 20px 0}
h1.title{font-family:var(--head);font-size:26px;line-height:1.32;margin:6px 20px 0;font-weight:700;letter-spacing:.01em}
.lede{margin:8px 20px 0;color:var(--ink2);font-size:13.5px;line-height:1.7}
h2.sec{font-family:var(--head);font-size:16px;margin:26px 20px 10px;display:flex;justify-content:space-between;align-items:baseline;gap:8px}
h2.sec small{font-family:var(--sans);font-weight:400;font-size:11px;color:var(--ink3)}
.note{margin:14px 20px 0;font-size:11px;color:var(--ink3);line-height:1.7}

/* cards */
.card{margin:12px 16px 0;padding:var(--card-pad);background:var(--card-bg);border:solid var(--line);border-width:var(--card-border);border-radius:var(--radius)}
:root:not([data-theme="dark"]) .card{margin:12px 20px 0}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .card{margin:12px 16px 0}}
.card.tap{cursor:pointer}
.card.tap:active{opacity:.75}
.crumb{font-size:11px;color:var(--ink3);display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.crumb b{color:var(--accent);font-weight:700}
.card h3{font-family:var(--head);font-size:16px;margin:4px 0 0;line-height:1.45}
.figs{display:flex;gap:18px;align-items:flex-end;margin-top:10px;flex-wrap:wrap}
.fig .k{font-size:11px;color:var(--ink3);display:flex;align-items:center;gap:5px;margin-bottom:3px}
.fig .v{font-family:var(--num);font-size:34px;line-height:1;font-weight:700;letter-spacing:-.01em}
.fig .v small{font-size:13px;font-weight:600;margin-left:3px;font-family:var(--sans);color:var(--ink2)}
.fig.sm .v{font-size:22px}
.fig.fc .v{color:var(--fc)}
.dot{display:inline-block;width:9px;height:9px;border-radius:50%;flex-shrink:0}
.dot.fc{background:var(--fc)}.dot.ac{background:var(--ac)}.dot.rw{background:var(--rw)}.dot.rj{background:var(--rj)}
.dot.hollow{background:transparent;border:1.5px solid var(--ink3)}
.chips{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}
.chip{font-size:11.5px;padding:5px 10px;border-radius:999px;border:1px solid var(--line2);color:var(--ink2);background:var(--bg);white-space:nowrap}
.chip.strong{background:var(--chip);color:var(--chip-ink);border-color:transparent;font-weight:700}
.chip.good{color:var(--good);border-color:currentColor}
.chip.bad{color:var(--bad);border-color:currentColor}
.chip.warn{border-style:dashed}

/* selectable rows of chips */
.scroller{display:flex;gap:6px;overflow-x:auto;padding:12px 20px 4px;scrollbar-width:none}
.scroller::-webkit-scrollbar{display:none}
.pick{flex-shrink:0;border:1px solid var(--line2);background:var(--card);border-radius:999px;padding:7px 13px;font-size:12.5px;color:var(--ink2);cursor:pointer;min-height:34px}
.pick[aria-pressed="true"]{background:var(--chip);color:var(--chip-ink);border-color:transparent;font-weight:700}
.pick .n{font-family:var(--num);font-size:10.5px;opacity:.7;margin-left:4px}
select.sel{margin:12px 20px 0;width:calc(100% - 40px);font:inherit;font-size:14px;color:var(--ink);background:var(--card);border:1px solid var(--line2);border-radius:10px;padding:10px 12px;min-height:44px}

/* stats row */
.stats{display:grid;grid-template-columns:repeat(3,1fr);margin:18px 20px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.stats div{padding:12px 4px;text-align:left}
.stats div+div{border-left:1px solid var(--line);padding-left:12px}
.stats b{display:block;font-family:var(--num);font-size:22px;font-weight:700}
.stats span{font-size:10.5px;color:var(--ink3)}

/* lists */
.list{margin:0 20px}
.li{display:grid;grid-template-columns:62px 1fr auto;gap:10px;align-items:center;padding:11px 0;border-bottom:1px solid var(--line);cursor:pointer}
.li .when{font-family:var(--num);font-size:12px;color:var(--ink2);line-height:1.3}
.li .when b{display:block;font-size:17px;color:var(--ink)}
.li .what{font-size:13px;line-height:1.45}
.li .what small{display:block;color:var(--ink3);font-size:11px}
.li .val{font-family:var(--num);font-size:14px;text-align:right;color:var(--fc)}
.li .val small{display:block;font-family:var(--sans);font-size:10px;color:var(--ink3)}

/* topics */
.topics{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:12px 20px 0}
.topic{border:1px solid var(--line);background:var(--card);border-radius:var(--radius);padding:10px 11px;cursor:pointer;text-align:left;min-height:66px;display:flex;flex-direction:column;justify-content:space-between;gap:6px}
.topic[aria-pressed="true"]{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.topic b{font-size:12.5px;line-height:1.4;font-weight:700}
.cov{display:flex;gap:10px;font-size:10.5px;color:var(--ink3);align-items:center}
.cov span{display:flex;align-items:center;gap:4px}
.themes{display:grid;grid-template-columns:repeat(2,1fr);gap:0;margin:0 20px;border-top:1px solid var(--line)}
.theme{padding:12px 4px;border-bottom:1px solid var(--line);cursor:pointer;display:flex;justify-content:space-between;align-items:center;gap:6px}
.theme:nth-child(odd){border-right:1px solid var(--line);padding-right:10px}
.theme:nth-child(even){padding-left:12px}
.theme b{font-size:13px}
.theme span{font-family:var(--num);font-size:11px;color:var(--ink3)}
.theme.empty b{color:var(--ink3);font-weight:500}

/* charts */
svg.chart{display:block;width:100%;height:auto;overflow:visible;touch-action:pan-y}
.chart .grid{stroke:var(--line);stroke-width:1}
.chart .axis{stroke:var(--line2);stroke-width:1}
.chart text{font-family:var(--num);font-size:10px;fill:var(--ink3)}
.chart text.lab{font-family:var(--sans);font-size:11px;font-weight:700}
.chart .actual{stroke:var(--ac);stroke-width:2.5;fill:none}
.chart .band{fill:var(--band)}
.legend{display:flex;gap:14px;flex-wrap:wrap;font-size:11px;color:var(--ink2);margin-top:8px}
.legend span{display:flex;align-items:center;gap:5px}
.legend i{display:inline-block;width:16px;height:0;border-top:2px solid}
.legend i.thin{border-top-width:1px}
.legend i.dot{width:9px;height:9px;border:0}
.pair{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:12px 16px 0}
.pair .card{margin:0;padding:10px}
:root:not([data-theme="dark"]) .pair{margin:12px 20px 0;gap:16px}
:root:not([data-theme="dark"]) .pair .card{padding:10px 0 0;border-width:1px 0 0}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]) .pair{margin:12px 16px 0;gap:10px}:root:not([data-theme="light"]) .pair .card{padding:10px;border-width:1px}}
.pair h4{margin:0;font-size:12.5px;display:flex;justify-content:space-between;align-items:center}
.pair h4 em{font-style:normal;font-weight:400;color:var(--ink3);font-family:var(--num);font-size:11px}
.pair p{margin:4px 0 0;font-size:11px;color:var(--ink2)}
.missing{border:1px dashed var(--line2);border-radius:var(--radius);padding:14px;color:var(--ink3);font-size:12px;line-height:1.6;text-align:center}
.missing b{display:block;color:var(--ink2);font-size:13px;margin-bottom:2px}

/* vintages table */
.vt{margin:6px 0 0;width:100%;border-collapse:collapse;font-size:12px}
.vt th{font-weight:500;color:var(--ink3);text-align:right;padding:6px 0;border-bottom:1px solid var(--line);font-size:10.5px}
.vt th:first-child,.vt td:first-child{text-align:left}
.vt td{padding:7px 0;border-bottom:1px solid var(--line);text-align:right;font-family:var(--num)}
.vt td.src{font-family:var(--sans);font-size:11px;color:var(--ink2)}
details{margin-top:10px}
summary{cursor:pointer;font-size:12px;color:var(--ink2);padding:6px 0;list-style:none}
summary::before{content:"＋ "}
details[open] summary::before{content:"－ "}

/* dumbbell */
.db-row{display:grid;grid-template-columns:112px 1fr;gap:8px;align-items:center;padding:6px 0;border-bottom:1px solid var(--line)}
.db-row b{font-size:11.5px;font-weight:500;line-height:1.35}

/* tabs */
.tabs{flex-shrink:0;display:grid;grid-template-columns:repeat(5,1fr);border-top:1px solid var(--line);background:var(--card);padding:6px 4px calc(6px + env(safe-area-inset-bottom))}
.tabs button{border:0;background:transparent;display:flex;flex-direction:column;align-items:center;gap:3px;font-size:10px;color:var(--ink3);cursor:pointer;padding:4px 0;min-height:48px}
.tabs svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.tabs svg .fill{fill:currentColor;stroke:none}
.tabs button.on{color:var(--accent);font-weight:700}

/* tooltip */
.tip{position:absolute;z-index:10;pointer-events:none;background:var(--ink);color:var(--bg);font-size:11.5px;line-height:1.5;padding:7px 10px;border-radius:8px;max-width:230px;opacity:0;transform:translateY(4px);transition:opacity .12s,transform .12s;box-shadow:0 6px 20px rgba(0,0,0,.18)}
.tip.on{opacity:1;transform:none}
.tip .num{font-weight:700}
.loading{margin:20px;color:var(--ink3);font-size:13px}
.err{margin:16px 20px;padding:12px;border-left:3px solid var(--bad);background:var(--sunk);font-size:12px;color:var(--ink2)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media (max-width:360px){h1.title{font-size:23px}.fig .v{font-size:29px}.seg button{padding:6px 8px}.topics{grid-template-columns:1fr}}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}

/* splash (launch + long waits) */
.splash{position:fixed;inset:0;z-index:50;background:#050a24 url(/splash.webp) center/cover no-repeat;display:flex;flex-direction:column;justify-content:flex-end;align-items:center;padding-bottom:calc(40px + env(safe-area-inset-bottom));transition:opacity .45s ease;opacity:1}
.splash.hide{opacity:0;pointer-events:none}
.splash.gone{display:none}
.splash.busy{background-color:rgba(5,10,36,.9)}
.splash-bar{width:120px;height:3px;border-radius:3px;background:rgba(255,255,255,.18);overflow:hidden}
.splash-bar i{display:block;width:40%;height:100%;background:linear-gradient(90deg,#5cc8ff,#ffb347);border-radius:3px;animation:ftbar 1.2s ease-in-out infinite}
.splash-skip{margin-top:12px;font-size:11px;color:rgba(255,255,255,.6);letter-spacing:.08em}
.splash.busy .splash-skip{display:none}
@keyframes ftbar{0%{transform:translateX(-110%)}100%{transform:translateX(260%)}}
@media (prefers-reduced-motion:reduce){.splash-bar i{animation:none;width:100%}}
/* install card */
.install{display:grid;grid-template-columns:56px 1fr;gap:12px;align-items:center}
.install img{width:56px;height:56px;border-radius:14px;display:block}
.install h3{margin:0}
.install p{margin:4px 0 0;font-size:12px;color:var(--ink2);line-height:1.6}
.btn{display:inline-flex;align-items:center;gap:6px;margin-top:10px;border:0;border-radius:999px;background:var(--chip);color:var(--chip-ink);font-weight:700;font-size:13px;padding:10px 16px;min-height:44px;cursor:pointer}
.btn[disabled]{opacity:.45;cursor:default}
.ios-steps{margin:10px 0 0;padding:10px 12px;border-radius:10px;background:var(--sunk);font-size:12px;line-height:1.7;color:var(--ink2)}
.ios-steps b{color:var(--ink)}