:root {
  color-scheme: light;
  --bg: #f6f5f1; --surface: #fcfcfb; --surface-2: #f0efea; --line: #e2e0d8;
  --ink: #0b0b0b; --ink-2: #52514e; --ink-3: #75736d;
  --accent: #2a78d6; --accent-ink: #ffffff; --focus: #2a78d6; --warn-bg: #fff4dc; --warn-ink: #6b4a00;
  --t0: #2a78d6; --t1: #eb6834; --t2: #1baf7a; --t3: #eda100; --t4: #e87ba4; --t5: #008300;
  --radius: 14px; --shadow: 0 1px 2px rgba(0,0,0,.05), 0 4px 16px rgba(0,0,0,.04);
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121211; --surface: #1a1a19; --surface-2: #232321; --line: #33322f;
  --ink: #ffffff; --ink-2: #c3c2b7; --ink-3: #9a998f;
  --accent: #3987e5; --accent-ink: #ffffff; --focus: #6aa8f0; --warn-bg: #3a2e10; --warn-ink: #f3d68a;
  --t0: #3987e5; --t1: #d95926; --t2: #199e70; --t3: #c98500; --t4: #d55181; --t5: #008300;
  --shadow: none;
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body { background: var(--bg); color: var(--ink); font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif; }
a { color: var(--accent); }
button { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
[hidden] { display: none !important; }
.muted { color: var(--ink-3); }
.small { font-size: 14px; }

.topbar { display: flex; justify-content: space-between; align-items: center; gap: 12px; padding: 10px 16px; border-bottom: 1px solid var(--line); background: var(--surface); position: sticky; top: 0; z-index: 5; }
.brand { display: flex; align-items: center; gap: 8px; min-width: 0; white-space: nowrap; overflow: hidden; }
.backlink { text-decoration: none; color: var(--ink-2); }
.sep { color: var(--ink-3); }
.topactions { display: flex; align-items: center; gap: 10px; }
.freebadge { font-size: 13px; color: var(--ink-2); background: var(--surface-2); border: 1px solid var(--line); padding: 3px 10px; border-radius: 999px; }
.ghost { background: transparent; border: 1px solid var(--line); border-radius: 10px; width: 36px; height: 36px; cursor: pointer; font-size: 18px; }

.wrap { max-width: 1080px; margin: 0 auto; padding: 24px 16px 40px; }
.hero h1 { font-size: clamp(28px, 5vw, 42px); line-height: 1.15; margin: 8px 0 10px; letter-spacing: -0.01em; }
.lede { font-size: 18px; color: var(--ink-2); max-width: 720px; margin: 0 0 22px; }
.startgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; max-width: 720px; }
.startcard { text-align: left; padding: 18px 20px; border-radius: var(--radius); border: 1px solid var(--line); background: var(--surface); cursor: pointer; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 4px; }
.startcard:hover { border-color: var(--accent); }
.startcard.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.startcard.primary .sc-meta { color: var(--accent-ink); opacity: .9; }
.sc-title { font-size: 20px; font-weight: 700; }
.sc-meta { font-size: 14px; color: var(--ink-2); }
.resume { margin: 14px 0 0; display: flex; gap: 10px; flex-wrap: wrap; align-items: baseline; }
.linkbtn { background: none; border: 0; padding: 0; color: var(--accent); cursor: pointer; text-decoration: underline; }
.examples { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 22px 0 0; }
.exlabel { color: var(--ink-2); font-size: 14px; margin-right: 4px; }
.chip { border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: 6px 14px; cursor: pointer; font-size: 14px; }
.chip:hover { border-color: var(--accent); }
.codeform { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 16px 0 0; font-size: 14px; color: var(--ink-2); }
.codeform input { width: 110px; padding: 7px 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink); text-transform: uppercase; font: inherit; letter-spacing: .1em; }
.btn { border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink); border-radius: 10px; padding: 8px 14px; cursor: pointer; font-size: 15px; }
.btn.small { padding: 6px 12px; font-size: 14px; }
.btn:disabled { opacity: .45; cursor: default; }
.ghostbtn { background: var(--surface); color: var(--ink); border-color: var(--line); }
.ghostbtn:hover:not(:disabled) { border-color: var(--accent); }

.typegrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 12px; margin-top: 34px; }
.typecard { display: flex; gap: 12px; padding: 14px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.typecard p { margin: 4px 0 0; font-size: 14px; color: var(--ink-2); }
.tletter { flex: none; width: 38px; height: 38px; border-radius: 10px; display: grid; place-items: center; font-weight: 800; color: #fff; font-size: 20px; }
.t0.tletter, .t0.chipletter, .bfill.t0, .cl.t0 { background: var(--t0); }
.t1.tletter, .t1.chipletter, .bfill.t1, .cl.t1 { background: var(--t1); }
.t2.tletter, .t2.chipletter, .bfill.t2, .cl.t2 { background: var(--t2); }
.t3.tletter, .t3.chipletter, .bfill.t3, .cl.t3 { background: var(--t3); }
.t4.tletter, .t4.chipletter, .bfill.t4, .cl.t4 { background: var(--t4); }
.t5.tletter, .t5.chipletter, .bfill.t5, .cl.t5 { background: var(--t5); }
.tletter, .chipletter, .cl { color: #0b0b0b; }

.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 20px; box-shadow: var(--shadow); margin: 0 0 18px; }
.panel h2 { font-size: 20px; margin: 0 0 12px; }
.panel h3 { font-size: 16px; margin: 16px 0 6px; }

/* quiz */
.quiz { max-width: 760px; margin: 12px auto; padding: 24px; }
.qtop { display: flex; justify-content: space-between; align-items: center; font-size: 14px; color: var(--ink-2); }
.progress { height: 8px; background: var(--surface-2); border-radius: 999px; margin: 10px 0 24px; overflow: hidden; }
.progress span { display: block; height: 100%; width: 0; background: var(--accent); border-radius: 999px; transition: width .2s; }
.qprompt { color: var(--ink-2); margin: 0 0 6px; font-size: 15px; }
.qtext { font-size: clamp(22px, 4vw, 30px); line-height: 1.25; margin: 0 0 26px; min-height: 2.5em; }
.scale { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.sbtn { display: flex; flex-direction: column; align-items: center; gap: 6px; padding: 14px 6px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); cursor: pointer; font-size: 14px; text-align: center; min-height: 84px; }
.sbtn:hover { border-color: var(--accent); }
.sbtn.sel { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.sbtn kbd { font: 600 12px/1 ui-monospace, Menlo, monospace; border: 1px solid var(--line); border-radius: 5px; padding: 3px 6px; color: var(--ink-3); background: var(--surface-2); }
.sbtn.sel kbd { color: var(--ink); }
.qnav { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-top: 22px; }
.qhint { font-size: 13px; text-align: center; }

/* results */
.banner { background: var(--warn-bg); color: var(--warn-ink); border-radius: 12px; padding: 10px 14px; margin: 0 0 14px; font-size: 15px; }
.summary { display: grid; grid-template-columns: minmax(200px, 1fr) minmax(260px, 340px) minmax(240px, 1.1fr); gap: 18px; align-items: center; }
.eyebrow { font-size: 13px; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-3); }
.codeletters { display: flex; gap: 8px; margin: 8px 0; }
.cl { width: 64px; height: 72px; border-radius: 14px; display: grid; place-items: center; font-size: 44px; font-weight: 800; }
.codenames { margin: 0; font-weight: 600; color: var(--ink-2); }
.chartwrap { width: 100%; }
.hex { width: 100%; height: auto; display: block; }
.hx-ring { fill: none; stroke: var(--line); stroke-width: 1; }
.hx-ring.outer { stroke: var(--ink-3); stroke-opacity: .5; }
.hx-spoke { stroke: var(--line); stroke-width: 1; }
.hx-shape { fill: var(--accent); fill-opacity: .16; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; }
.hx-dot { stroke: var(--surface); stroke-width: 2; }
.hx-dot.t0 { fill: var(--t0); } .hx-dot.t1 { fill: var(--t1); } .hx-dot.t2 { fill: var(--t2); }
.hx-dot.t3 { fill: var(--t3); } .hx-dot.t4 { fill: var(--t4); } .hx-dot.t5 { fill: var(--t5); }
.hx-label { fill: var(--ink-2); font-size: 13px; font-family: inherit; }
.hx-label.top { fill: var(--ink); font-weight: 700; }
.bars { display: flex; flex-direction: column; gap: 8px; }
.brow { display: grid; grid-template-columns: 130px 1fr 34px; align-items: center; gap: 10px; font-size: 14px; color: var(--ink-2); }
.brow.top { color: var(--ink); font-weight: 600; }
.btrack { height: 14px; background: var(--surface-2); border-radius: 4px; overflow: hidden; }
.bfill { display: block; height: 100%; border-radius: 0 4px 4px 0; }
.bval { text-align: right; font-variant-numeric: tabular-nums; }

.actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 0 0 18px; }
.cols { display: grid; grid-template-columns: 1.3fr 1fr; gap: 18px; }
.cols .panel { margin: 0 0 18px; }
.tread + .tread { border-top: 1px solid var(--line); margin-top: 10px; }
.tread p { margin: 6px 0; }
.chipletter { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 6px; font-weight: 800; font-size: 14px; vertical-align: middle; }
.quality dt { font-weight: 600; margin-top: 10px; }
.quality dd { margin: 4px 0 0; color: var(--ink-2); font-size: 15px; }
.quality dd.warn { background: var(--warn-bg); color: var(--warn-ink); padding: 8px 10px; border-radius: 10px; margin-top: 10px; }
.pill { font-size: 12px; font-weight: 600; border: 1px solid var(--line); border-radius: 999px; padding: 1px 8px; color: var(--ink-2); margin-left: 4px; }
.arealist { margin: 6px 0 0; padding-left: 22px; }
.arealist li { margin: 6px 0; }

.grouplist { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 10px; }
.gcard { text-align: left; display: grid; grid-template-columns: auto 1fr; grid-template-rows: auto auto; column-gap: 12px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); cursor: pointer; }
.gcard:hover { border-color: var(--accent); }
.gfit { grid-row: 1 / span 2; font-size: 26px; font-weight: 800; color: var(--accent); font-variant-numeric: tabular-nums; align-self: center; }
.gname { font-weight: 600; }
.gbest { font-size: 13px; line-height: 1.35; }

.mhead { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.filters { display: flex; flex-wrap: wrap; gap: 10px 14px; align-items: end; margin: 4px 0 10px; }
.zonechips { display: flex; flex-wrap: wrap; gap: 6px; }
.zchip { border: 1px solid var(--line); background: var(--surface); border-radius: 999px; padding: 6px 12px; cursor: pointer; font-size: 14px; }
.zchip.on { background: var(--ink); color: var(--surface); border-color: var(--ink); }
.field { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--ink-2); }
.field.grow { flex: 1 1 200px; }
.field select, .field input { font: inherit; font-size: 15px; padding: 7px 10px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--ink); min-width: 0; }
.matchlist { list-style: none; margin: 0; padding: 0; }
.mitem { border-top: 1px solid var(--line); }
.mhead-btn { width: 100%; display: grid; grid-template-columns: 76px 1fr auto auto; gap: 12px; align-items: center; padding: 12px 4px; border: 0; background: none; cursor: pointer; text-align: left; }
.mhead-btn:hover .mtitle { color: var(--accent); }
.mfit { position: relative; height: 24px; background: var(--surface-2); border-radius: 4px; overflow: hidden; }
.mfitbar { position: absolute; left: 0; top: 0; bottom: 0; background: var(--accent); opacity: .28; }
.mfitnum { position: relative; display: block; text-align: center; font-weight: 700; font-size: 14px; line-height: 24px; font-variant-numeric: tabular-nums; }
.mtitle { font-weight: 600; }
.mcode { font: 600 13px ui-monospace, Menlo, monospace; color: var(--ink-2); letter-spacing: .08em; }
.mzone { font-size: 12px; border: 1px solid var(--line); border-radius: 999px; padding: 2px 8px; color: var(--ink-2); white-space: nowrap; }
.odetail { padding: 0 4px 14px 92px; color: var(--ink-2); }
.odetail p { margin: 6px 0; }
.odetail h4 { margin: 12px 0 4px; font-size: 14px; color: var(--ink); }
.tasks { margin: 0; padding-left: 20px; font-size: 14px; }
.tasks li { margin: 3px 0; }
#more { margin-top: 10px; }

.note { color: var(--ink-3); font-size: 14px; margin: 26px 0 0; }
.foot { border-top: 1px solid var(--line); padding: 18px 16px 28px; color: var(--ink-3); font-size: 13px; max-width: 1080px; margin: 0 auto; }
.foot p { margin: 6px 0; }

@media (max-width: 860px) {
  .summary { grid-template-columns: 1fr; }
  .chartwrap { max-width: 340px; margin: 0 auto; }
  .cols { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .freebadge { display: none; }
  .scale { grid-template-columns: 1fr; gap: 6px; }
  .sbtn { flex-direction: row; justify-content: flex-start; min-height: 0; padding: 12px 14px; gap: 12px; font-size: 16px; }
  .qhint { display: none; }
  .mhead-btn { grid-template-columns: 56px 1fr; }
  .mcode, .mzone { grid-column: 2; justify-self: start; }
  .mhead-btn .mcode { grid-row: 2; }
  .mhead-btn .mzone { grid-row: 3; }
  .odetail { padding-left: 4px; }
  .brow { grid-template-columns: 112px 1fr 30px; }
  .typegrid { grid-template-columns: 1fr; }
  .quiz { padding: 18px 16px; }
}