/* =============================================================================
   Twilight Imperium 3rd Edition — Setup & Reference Utility
   Styled after the 3rd Edition rulebooks (Base 2005, Shattered Empire 2006, Shards of the Throne 2011):
   · gold schematic pages between a blue page bar and a steel rail, with the black "Page N" capsule and its two
     red jewels (every interior page; the page art itself is images/page-gold.webp);
   · royal-blue title pills ("Welcome", "Game Setup", Base p.4–6), yellow outlined pills ("Passing" Base p.14,
     "Option N" SE p.9, SoT p.10), red "Game option" pills (Base p.32–35);
   · red numbered balls for the setup steps (Base p.6);
   · grey circuit sidebars capped with blue metal frame bars ("Reinforcements" Base p.6, "Imperium Rex" p.14);
   · dark blueprint panels for the galaxy diagrams (Base p.8, p.32; SE p.8);
   · black Strategy Cards, one colour per number, white cards for Shattered Empire's variant set
     (Base p.36–38, SE p.14–16);
   · covers: starfield band + logo, painted band, gold "Rules of Play" on red scan lines.
   Headings: Arimo (the books' Slicker/Helvetica). Text: Tinos (their Times New Roman).
   ============================================================================= */

:root {
  --gold:      #f8d474;   /* page art median (Base p.4–44) */
  --gold-dk:   #eec25c;   /* darkest page mottling */
  --paper:     rgba(255, 251, 236, 0.74);   /* card surface over the page (≈ #fdf0ca) */
  --paper-ln:  rgba(110, 80, 10, 0.42);     /* hairline around cards */
  --ink:       #16120a;
  --muted:     #4b3c12;   /* secondary text on the gold */
  --royal:     #0003b7;   /* title pills (sampled) */
  --royal-dk:  #00027d;
  --bar:       #1642c5;   /* page bar blue (sampled #1439aa–#1642c5) */
  --navy:      #030e40;   /* metal frames (sampled) */
  --space:     #020746;   /* cover starfield (sampled) */
  --ptext:     #3b4250;   /* secondary text on the grey sidebar */
  --pline:     #4e5967;   /* control borders on the grey sidebar */
  --pcard:     #fbfbf9;   /* controls on the grey sidebar */
  --yellow:    #ffff00;   /* option pills (sampled) */
  --gold-ink:  #ffcc03;   /* "Rules of Play" gold (from the PDF) */
  /* the setup steps' glossy red ball (Base p.6): a small highlight kept clear of the numeral, a flat #d30b0b face */
  --red-ball:  radial-gradient(circle at 29% 23%, rgba(255, 200, 190, 0.95) 0 7%, rgba(255, 140, 120, 0) 17%),
               radial-gradient(circle at 50% 46%, #d30b0b 0 52%, #a80000 80%, #6e0000 100%);
  --jewel:     radial-gradient(circle at 36% 32%, #ff9a8c 0 14%, #e41212 46%, #8a0000 100%);
  /* Strategy Card colours, sampled from the cards' "Active" tabs (Base p.36–38) */
  --sc1: #d6070a; --sc2: #e0600f; --sc3: #f2e24e; --sc4: #0f7a1a;
  --sc5: #0ddd55; --sc6: #0ed8cb; --sc7: #0a4ed7; --sc8: #9f07da;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--gold) url("../images/page-gold.webp") center top / 100% auto repeat-y;
  color: var(--ink);
  font-family: "Tinos", "Times New Roman", Times, serif;
  font-size: 19px;
  line-height: 1.55;
  min-height: 100vh;
}
::selection { background: var(--yellow); color: #000; }
:focus-visible { outline: 3px solid var(--royal); outline-offset: 2px; }
.vh {
  position: absolute !important; width: 1px; height: 1px; margin: -1px; padding: 0; border: 0;
  overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}
b, strong { font-weight: 700; }

/* =============================================================================
   Masthead — the cover's three bands, then the interior page bar
   ============================================================================= */
.mast { position: relative; background: var(--space); color: #fff; text-align: center; }

.mast-sky {
  position: relative;
  padding: 22px 16px 18px;
  background-color: var(--space);
  background-image:
    radial-gradient(circle at 30% 40%, #fff 0 1px, transparent 1.7px),
    radial-gradient(circle at 70% 60%, rgba(190, 215, 255, 0.95) 0 1.4px, rgba(120, 170, 255, 0.35) 2.2px, transparent 4px),
    radial-gradient(circle at 20% 70%, rgba(255, 255, 255, 0.55) 0 0.7px, transparent 1.3px),
    radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.45) 0 0.6px, transparent 1.2px),
    radial-gradient(circle at 55% 35%, rgba(200, 220, 255, 0.6) 0 0.8px, transparent 1.5px),
    radial-gradient(60% 150% at 92% 110%, rgba(1, 39, 241, 0.75), transparent 62%),
    radial-gradient(45% 130% at 4% 120%, rgba(20, 70, 220, 0.4), transparent 60%),
    linear-gradient(180deg, #020746 0%, #00086a 60%, #000b84 100%);
  background-size: 311px 157px, 467px 211px, 83px 67px, 139px 101px, 197px 89px, 100% 100%, 100% 100%, 100% 100%;
  background-position: 11px 23px, 97px 61px, 41px 9px, 67px 31px, 5px 53px, 0 0, 0 0, 0 0;
}
.mast-logo {
  display: block; width: min(600px, 90vw); height: auto; margin: 0 auto;
  filter: drop-shadow(0 3px 8px rgba(0, 0, 20, 0.7));
}
/* the thin glowing line between the cover's bands */
.mast-sky::after, .mast-art::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; z-index: 2;
  background: linear-gradient(90deg, rgba(71, 151, 219, 0.35), #8cc4ff 50%, rgba(71, 151, 219, 0.35));
  box-shadow: 0 0 9px 1px rgba(110, 170, 255, 0.65);
}

.mast-art {
  position: relative; isolation: isolate; height: 264px; overflow: hidden;
  background: linear-gradient(180deg, #050820, #0b0a14);
}
/* beyond the painting's own width, a blurred and darkened copy of it carries its colours to the edges */
.mast-art::before {
  content: ""; position: absolute; inset: -30px; z-index: -1;
  background: url("../images/cover-art.webp") 50% 32% / cover no-repeat;
  filter: blur(26px) brightness(0.34) saturate(1.1);
}
.mast-art img {
  position: relative;
  display: block; width: 816px; max-width: none; height: 100%; margin: 0 auto;
  object-fit: cover; object-position: 50% 32%;
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 13%, #000 87%, transparent 100%);
          mask-image: linear-gradient(90deg, transparent 0, #000 13%, #000 87%, transparent 100%);
}

.mast-foot {
  position: relative; overflow: hidden;
  padding: 16px 16px 16px;
  background:
    radial-gradient(70% 160% at 50% -20%, rgba(14, 44, 108, 0.95), transparent 70%),
    linear-gradient(180deg, #010851 0%, #0a0c2c 62%, #07070f 100%);
}
.mast-title {
  position: relative; z-index: 0;
  font-family: "Arimo", Arial, "Helvetica Neue", Helvetica, sans-serif;
  font-weight: 400;
  font-size: clamp(1.55rem, 4.6vw, 2.75rem);
  line-height: 1.12;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-ink);
  text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8);
  padding: 2px 0 4px 0.14em;   /* balances the trailing tracking */
}
/* the cover's red scan lines run the full width behind the title */
.mast-title::before {
  content: ""; position: absolute; left: -16px; right: -16px; top: 8%; bottom: 10%; z-index: -1;
  background: repeating-linear-gradient(180deg, transparent 0 7px, rgba(214, 28, 28, 0.62) 7px 8px);
}
.mast-credit {
  margin-top: 8px;
  font-family: "Tinos", "Times New Roman", serif;
  font-weight: 700; font-size: 0.875rem; line-height: 1.4;
  font-variant: small-caps; letter-spacing: 0.26em;
  color: #f2f4ff;
}
.mast-credit b { color: var(--gold-ink); padding: 0 0.3em; }
.mast-credit span { white-space: nowrap; }

/* the blue page bar and steel rail that top every interior page (sampled from the page art) */
.mast::after {
  content: ""; display: block; height: 30px;
  background:
    linear-gradient(180deg, transparent 0 15px, #2e3741 15px 16px, #b3b9b3 16px 17px, #87908b 17px 18px,
      #545b59 18px 19px, #252728 19px 20px, #1a150c 20px 21px, rgba(85, 72, 37, 0.9) 21px 22px,
      rgba(150, 110, 20, 0.35) 22px 26px, rgba(150, 110, 20, 0) 30px),
    repeating-linear-gradient(118deg, rgba(0, 0, 50, 0.16) 0 2px, transparent 2px 11px),
    radial-gradient(35% 200% at 18% 20%, rgba(90, 130, 255, 0.45), transparent 70%),
    radial-gradient(30% 200% at 70% 80%, rgba(0, 12, 90, 0.4), transparent 70%),
    linear-gradient(180deg, #1339af, var(--bar) 15px, transparent 15px);
}

/* =============================================================================
   Page layout
   ============================================================================= */
main { max-width: 1000px; margin: 0 auto; padding: 22px 16px 64px; }

.tagline { max-width: 70ch; font-size: 1.05rem; line-height: 1.6; color: var(--ink); }
.tagline em { font-style: italic; color: var(--royal-dk); }

.sec { margin-top: 42px; }
/* section headings: the books' royal-blue title pills */
.sec > h2 {
  display: inline-block; min-width: min(100%, 300px);
  margin: 0 0 10px;
  padding: 7px 34px 8px;
  font-family: "Arimo", Arial, "Helvetica Neue", Helvetica, sans-serif;
  font-weight: 400; font-size: 1.6rem; line-height: 1.15;
  text-align: center; color: #fff;
  background: var(--royal);
  border-radius: 999px;
  box-shadow: inset 0 1px 0 rgba(150, 160, 255, 0.35), 0 2px 0 rgba(0, 0, 60, 0.28);
}
.sec-note { max-width: 70ch; margin: 0 0 16px; font-style: italic; font-size: 1.05rem; color: var(--muted); }

/* =============================================================================
   Sidebars: grey circuit panel + blue metal frame bars (configurator, teaching script)
   ============================================================================= */
.cfg, .teach-panel {
  position: relative;
  margin: 30px 8px 36px;
  padding: 32px 26px 30px;
  background:
    linear-gradient(rgba(243, 244, 245, 0.66), rgba(243, 244, 245, 0.66)),
    url("../images/circuit.webp") 0 0 / 327px 327px repeat,
    #cbcbcb;
  border-left: 2px solid #7d8795; border-right: 2px solid #7d8795;
  box-shadow: 0 4px 12px rgba(90, 60, 0, 0.28);
}
/* frame bars (the sidebar art, Base p.6): a thick bar with a slanted tab at each end and a step in its inner edge */
.cfg::before, .cfg::after, .teach-panel::before, .teach-panel::after {
  --tab: 24px; --step: 96px;
  content: ""; position: absolute; left: -12px; right: -12px; height: 30px; z-index: 1;
  background: #0b2a66 url("../images/frame-bars.webp") 0 0 / 100% 200% no-repeat;
}
/* the bar's inner edge never rises above the panel's edge, so no page shows between them */
.cfg::before, .teach-panel::before {
  top: -19px; background-position: 0 0;
  clip-path: polygon(0 0, 100% 0, calc(100% - 7px) 100%, calc(100% - var(--tab)) 100%, calc(100% - var(--tab)) 24px,
    calc(100% - var(--step)) 24px, calc(100% - var(--step) - 5px) 19px, calc(var(--step) + 5px) 19px, var(--step) 24px,
    var(--tab) 24px, var(--tab) 100%, 7px 100%);
}
.cfg::after, .teach-panel::after {
  bottom: -19px; background-position: 0 100%;
  clip-path: polygon(7px 0, var(--tab) 0, var(--tab) 6px, var(--step) 6px, calc(var(--step) + 5px) 11px,
    calc(100% - var(--step) - 5px) 11px, calc(100% - var(--step)) 6px, calc(100% - var(--tab)) 6px,
    calc(100% - var(--tab)) 0, calc(100% - 7px) 0, 100% 100%, 0 100%);
}

/* =============================================================================
   Configurator
   ============================================================================= */
.cfg { display: flex; flex-direction: column; gap: 20px; }
.cfg-group + .cfg-group {
  padding-top: 20px;
  background: linear-gradient(90deg, rgba(46, 55, 65, 0.55), rgba(46, 55, 65, 0.1)) 0 0 / 100% 1px no-repeat,
              linear-gradient(90deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.2)) 0 1px / 100% 1px no-repeat;
}
.cfg-label {
  margin: 0 0 10px;
  font-family: "Arimo", Arial, "Helvetica Neue", Helvetica, sans-serif;
  font-weight: 700; font-size: 1.08rem; line-height: 1.35;
  font-variant: small-caps; letter-spacing: 0.05em;
  color: var(--navy);
}
.cfg-label::before {
  content: ""; display: inline-block; width: 11px; height: 11px; margin-right: 9px; vertical-align: 0;
  border-radius: 50%; background: var(--jewel); box-shadow: 0 0 0 1px #4a0000;
}
.cfg-label .hint {
  font-family: "Tinos", "Times New Roman", serif; font-weight: 400; font-style: italic;
  font-size: 1rem; font-variant: normal; letter-spacing: 0; color: var(--ptext);
}

.chips, .pbtns { display: flex; flex-wrap: wrap; gap: 10px; }

.chip, .mode-btn, .mod, .pbtn, #teachBtn, .teach-copy {
  font: inherit; color: var(--ink); cursor: pointer;
  transition: border-color 0.15s, background-color 0.15s, box-shadow 0.15s, transform 0.15s;
}

/* sets in play — pills with a check disc */
.chip {
  position: relative;
  display: flex; flex-direction: column; align-items: flex-start; justify-content: center;
  min-height: 54px; padding: 6px 22px 7px 48px; text-align: left;
  background: var(--pcard); border: 2px solid var(--pline); border-radius: 999px;
}
.chip b { font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 1rem; line-height: 1.25; }
.chip span { font-family: "Arimo", Arial, sans-serif; font-size: 0.875rem; line-height: 1.3; color: var(--ptext); }
.chip::before {
  content: ""; position: absolute; left: 14px; top: 50%; width: 22px; height: 22px; margin-top: -11px;
  border-radius: 50%; border: 2px solid var(--pline); background: #fff;
}
.chip.on { background: var(--royal); border-color: var(--royal-dk); color: #fff; box-shadow: 0 2px 0 rgba(0, 0, 50, 0.3); }
.chip.on span { color: #e3e6ff; }
.chip.on::before {
  border-color: #fff;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8.5l3.2 3.2L13 4.6' fill='none' stroke='%230003b7' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 15px no-repeat;
}
.chip.lock { cursor: default; }
.chip:not(.lock):hover { border-color: var(--royal); box-shadow: 0 0 0 3px rgba(0, 3, 183, 0.2); }
.chip.on:not(.lock):hover { background: #1116cf; }

/* ways to play / strategy-card sets — radio cards; the chosen one turns into the dark "Lazax" panel (SoT p.14) */
.mode-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }
.mode-btn {
  position: relative; text-align: left;
  display: flex; flex-direction: column; justify-content: flex-start; align-items: stretch;
  padding: 12px 16px 13px 50px;
  background: var(--pcard); border: 2px solid var(--pline); border-radius: 8px;
}
.mode-btn::before {
  content: ""; position: absolute; left: 15px; top: 14px; width: 22px; height: 22px;
  border-radius: 50%; border: 2px solid var(--pline); background: #fff;
}
.mode-btn b { display: block; margin-bottom: 3px; font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 1.05rem; line-height: 1.25; }
.mode-btn span { display: block; font-size: 1rem; line-height: 1.45; color: var(--ptext); }
.mode-btn.on {
  background: linear-gradient(180deg, #0c1c63, var(--navy));
  border-color: var(--navy); color: #fff;
  box-shadow: inset 0 0 0 1px rgba(160, 180, 235, 0.4), 0 2px 0 rgba(0, 0, 30, 0.3);
}
.mode-btn.on span { color: #dfe4f7; }
.mode-btn.on::before { border: 2px solid #fff; background: var(--red-ball); box-shadow: 0 0 0 1px #5a0000; }
.mode-btn:hover:not(:disabled):not(.on) { border-color: var(--royal); box-shadow: 0 0 0 3px rgba(0, 3, 183, 0.2); }
.mode-btn.off { background: rgba(255, 255, 255, 0.34); border-style: dashed; color: #444b57; cursor: not-allowed; }
.mode-btn.off span { color: #444b57; }
.mode-btn.off::before { background: transparent; border-style: dashed; }
.mode-btn.off::after {           /* the reason, visible without hovering (the button's own title) */
  content: attr(title); display: block; margin-top: 6px;
  font-family: "Arimo", Arial, sans-serif; font-size: 0.875rem; font-weight: 700; color: #8a0000;
}

/* players — the setup steps' red balls */
.pbtn {
  width: 50px; height: 50px; border-radius: 50%;
  background: var(--pcard); border: 2px solid var(--pline);
  font-family: "Tinos", "Times New Roman", serif; font-weight: 700; font-size: 1.45rem; line-height: 1;
  color: var(--navy);
}
.pbtn.on {
  background: var(--red-ball); border: 3px solid #fff; color: #fff;
  box-shadow: 0 0 0 1.5px #6e0000, 0 3px 6px rgba(60, 0, 0, 0.35);
  text-shadow: 0 1px 1px rgba(60, 0, 0, 0.75);
  transform: scale(1.07);
}
.pbtn:hover:not(:disabled):not(.on) { border-color: var(--royal); box-shadow: 0 0 0 3px rgba(0, 3, 183, 0.2); }
.pbtn.off { background: transparent; border-style: dashed; color: #4d5563; cursor: not-allowed; }

/* strategy cards — black cards with each number's colour (Base p.36–38); white for SE's variant set */
.slots { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-top: 12px; }
/* three layers, as on the printed cards: a black outer edge (the button's own background, drawn as a trapezoid),
   the number's colour frame (::before) and the card face (::after) */
.slot {
  --sc: #777; --sc-body: #0b0b0b; --sc-ink: #fff; --sc-sub: #d2d2d2; --edge: #0b0b0b;
  position: relative; isolation: isolate;
  display: flex; flex-wrap: wrap; align-items: center; align-content: center; column-gap: 10px;
  min-height: 72px; padding: 10px 21px 12px 15px;
  font: inherit; text-align: left; color: var(--sc-ink);
  border: 0; border-radius: 0;
  background:
    linear-gradient(to bottom left, var(--edge) calc(50% - 0.6px), transparent calc(50% + 0.6px)) left top / 11px 100% no-repeat,
    linear-gradient(to bottom right, var(--edge) calc(50% - 0.6px), transparent calc(50% + 0.6px)) right top / 11px 100% no-repeat,
    linear-gradient(var(--edge), var(--edge)) center / calc(100% - 22px) 100% no-repeat;
}
.slot::before, .slot::after { content: ""; position: absolute; z-index: -1; }
.slot::before { inset: 1.5px; background: var(--sc); clip-path: polygon(0 0, 100% 0, calc(100% - 10.3px) 100%, 10.3px 100%); }
.slot::after { inset: 4.5px; background: var(--sc-body); clip-path: polygon(0 0, 100% 0, calc(100% - 9.4px) 100%, 9.4px 100%); }
.slot .slot-n {
  flex: 0 0 auto;
  display: grid; place-items: center; width: 36px; height: 36px;
  font-family: "Audiowide", "Arimo", Arial, sans-serif; font-size: 1.3rem; line-height: 1;
  color: #fff; background: #000; border: 2px solid var(--sc);
}
.slot .slot-name {
  flex: 1 1 0; min-width: 0;
  font-family: "Audiowide", "Arimo", Arial, sans-serif; font-size: 0.9rem; line-height: 1.2;
  text-transform: uppercase; letter-spacing: 0.02em;
}
.slot .slot-swap {
  flex: 0 0 100%; margin-top: 4px; padding-left: 46px;
  font-family: "Arimo", Arial, sans-serif; font-size: 0.875rem; line-height: 1.25; color: var(--sc-sub);
}
@media (min-width: 980px) { .slots { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
.slots .slot:nth-child(1) { --sc: var(--sc1); }
.slots .slot:nth-child(2) { --sc: var(--sc2); }
.slots .slot:nth-child(3) { --sc: var(--sc3); }
.slots .slot:nth-child(4) { --sc: var(--sc4); }
.slots .slot:nth-child(5) { --sc: var(--sc5); }
.slots .slot:nth-child(6) { --sc: var(--sc6); }
.slots .slot:nth-child(7) { --sc: var(--sc7); }
.slots .slot:nth-child(8) { --sc: var(--sc8); }
.slot.set-se { --sc-body: #f6f6f1; --sc-ink: #0b0b0b; --sc-sub: #33363d; }
.slot.fixed { cursor: default; }
.slot.can { cursor: pointer; }
.slot.can:hover { transform: translateY(-2px); }
.slot.can:hover::before { filter: brightness(1.25) saturate(1.1); }
.slot.swapped { outline: 3px dashed #a30000; outline-offset: 3px; }
.slot.swapped .slot-swap::after { content: " · swapped"; font-weight: 700; }
.slot:focus-visible { outline: 3px solid var(--royal); outline-offset: 3px; }

/* optional rules — grouped under the books' yellow "Option" pills; on = the pill's yellow */
.mod-groups { display: flex; flex-direction: column; gap: 18px; }
.mod-group-h {
  display: inline-block; margin: 0 0 10px; padding: 3px 22px 4px;
  font-family: "Arimo", Arial, sans-serif; font-weight: 400; font-size: 1.05rem; line-height: 1.3;
  color: #000; background: var(--yellow); border: 2px solid #111; border-radius: 999px;
}
.mod-group-h span { margin-left: 6px; font-family: "Tinos", "Times New Roman", serif; font-style: italic; font-size: 0.95rem; color: #2a2a00; }
.mods { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 10px; }
.mod {
  position: relative; text-align: left;
  display: flex; flex-direction: column; justify-content: flex-start; align-items: stretch;
  padding: 10px 14px 12px;
  background: var(--pcard); border: 2px solid var(--pline); border-radius: 8px;
}
.mod-name {
  display: block; position: relative; margin-bottom: 4px; padding-left: 31px;
  font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 1rem; line-height: 1.3;
}
.mod-name::before {
  content: ""; position: absolute; left: 0; top: -1px; width: 21px; height: 21px;
  border: 2px solid var(--pline); border-radius: 3px; background: #fff;
}
.mod-sum { display: block; font-size: 1rem; line-height: 1.45; color: var(--ptext); }
.mod.on { background: #fff47e; border-color: #111; box-shadow: inset 0 0 0 1px #111; }
.mod.on .mod-sum { color: #2c2900; }
.mod.on .mod-name::before {
  border-color: #111;
  background: #111 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M3 8.5l3.2 3.2L13 4.6' fill='none' stroke='%23ffff00' stroke-width='2.6' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center / 15px no-repeat;
}
.mod:hover:not(:disabled) { border-color: var(--royal); }
.mod.on:hover:not(:disabled) { border-color: #111; background: #fff8a3; }
.mod.off { background: rgba(255, 255, 255, 0.34); border-style: dashed; cursor: not-allowed; }
.mod.off .mod-name, .mod.off .mod-sum { color: #444b57; }
.mod.off .mod-name::before { background: transparent; border-style: dashed; }
.mods-note {
  padding: 14px 18px; font-size: 1rem; line-height: 1.5; color: #f3f5ff;
  background: linear-gradient(180deg, #0c1c63, var(--navy)); border: 2px solid var(--navy); border-radius: 8px;
  box-shadow: inset 0 0 0 1px rgba(160, 180, 235, 0.4);
}
.mods-note b { color: var(--gold-ink); }

/* =============================================================================
   Teaching script
   ============================================================================= */
.teach-bar { margin: 2px 0 16px; }
#teachBtn {
  display: inline-flex; align-items: center; gap: 12px;
  min-height: 48px; padding: 8px 24px 9px 20px;
  font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 1.05rem; line-height: 1.2;
  color: #fff; background: var(--royal); border: 2px solid var(--royal-dk); border-radius: 999px;
  box-shadow: 0 2px 0 rgba(0, 0, 60, 0.3);
}
#teachBtn::after {
  content: ""; width: 0; height: 0;
  border-left: 6px solid transparent; border-right: 6px solid transparent; border-top: 8px solid currentColor;
  transition: transform 0.15s;
}
#teachBtn:hover { background: #1116cf; }
#teachBtn[aria-expanded="true"] { color: #000; background: var(--yellow); border-color: #111; }
#teachBtn[aria-expanded="true"]::after { transform: rotate(180deg); }

.teach-panel { margin-top: 26px; padding: 30px 30px 30px; }
.teach-panel[hidden] { display: none; }
.teach-top {
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px 14px;
  padding-bottom: 12px; margin-bottom: 12px; border-bottom: 2px solid rgba(3, 14, 64, 0.22);
}
.teach-top h3 {
  font-family: "Arimo", Arial, sans-serif; font-weight: 400; font-size: 1.5rem; line-height: 1.2;
  text-transform: uppercase; letter-spacing: 0.01em; color: #000;
}
.teach-copy {
  min-height: 44px; padding: 7px 18px;
  font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 0.95rem;
  color: var(--royal); background: var(--pcard); border: 2px solid var(--royal); border-radius: 999px;
}
.teach-copy:hover { background: #e6e8ff; }
.teach-note { max-width: 72ch; margin-bottom: 6px; font-style: italic; font-size: 1rem; color: var(--ptext); }
.teach-panel h4 {
  margin: 20px 0 6px;
  font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 1.08rem; line-height: 1.3;
  font-variant: small-caps; letter-spacing: 0.05em; color: var(--royal);
}
.teach-panel h4::before {
  content: ""; display: inline-block; width: 11px; height: 11px; margin-right: 9px;
  border-radius: 50%; background: var(--jewel); box-shadow: 0 0 0 1px #4a0000;
}
.teach-panel p, .teach-panel ul, .teach-panel ol { max-width: 72ch; }
.teach-panel p { margin-bottom: 10px; }
.teach-panel b { color: var(--royal-dk); }

/* =============================================================================
   Setup steps
   ============================================================================= */
.phase { margin-top: 28px; }
.phase:first-child { margin-top: 8px; }
/* phase headings: the books' yellow outlined pills */
.phase-title {
  display: inline-block; margin: 0 0 12px; padding: 4px 26px 5px;
  font-family: "Arimo", Arial, sans-serif; font-weight: 400; font-size: 1.2rem; line-height: 1.3;
  color: #000; background: var(--yellow); border: 2px solid #111; border-radius: 999px;
}
.step {
  display: flex; gap: 16px;
  margin: 0 0 12px; padding: 16px 22px 16px 14px;
  background: var(--paper); border: 1px solid var(--paper-ln); border-radius: 6px;
  box-shadow: 0 1px 2px rgba(110, 80, 10, 0.12);
}
/* the red numbered ball (Base p.6) */
.step-num {
  flex: 0 0 auto; width: 46px; height: 46px; margin-top: 1px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; background: var(--red-ball);
  border: 2.5px solid #fff; box-shadow: 0 0 0 1px rgba(110, 0, 0, 0.6), 0 3px 6px rgba(90, 50, 0, 0.3);
  font-family: "Tinos", "Times New Roman", serif; font-weight: 700; font-size: 1.45rem; line-height: 1;
  color: #fff; text-shadow: 0 1px 1px rgba(70, 0, 0, 0.7);
}
.step-body { flex: 1; min-width: 0; }
.step-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 12px; margin: 6px 0 6px; }
.step-head h4 { font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 1.15rem; line-height: 1.3; color: var(--ink); }
.step-text { max-width: 72ch; }
.step-text b { color: var(--royal-dk); }
.step-text p { margin-bottom: 8px; }

/* lists: TI's hex for bullets, the red ball for numbers */
.step-text ul, .ref-body ul, .teach-panel ul { list-style: none; margin: 4px 0 8px; }
.step-text ul > li, .ref-body ul > li, .teach-panel ul > li { position: relative; margin-bottom: 6px; padding-left: 26px; }
.step-text ul > li::before, .ref-body ul > li::before, .teach-panel ul > li::before {
  content: ""; position: absolute; left: 5px; top: 0.5em; width: 12px; height: 11px;
  background: var(--royal);
  clip-path: polygon(25% 0, 75% 0, 100% 50%, 75% 100%, 25% 100%, 0 50%);
}
.step-text ol, .ref-body ol, .teach-panel ol { list-style: none; counter-reset: n; margin: 4px 0 10px; }
.step-text ol > li, .ref-body ol > li, .teach-panel ol > li { position: relative; counter-increment: n; margin-bottom: 7px; padding-left: 36px; }
.step-text ol > li::before, .ref-body ol > li::before, .teach-panel ol > li::before {
  content: counter(n); position: absolute; left: 0; top: 0.12em;
  width: 25px; height: 25px; display: grid; place-items: center;
  border-radius: 50%; background: var(--red-ball); border: 1.5px solid #fff; box-shadow: 0 0 0 1px rgba(110, 0, 0, 0.55);
  font-family: "Tinos", "Times New Roman", serif; font-weight: 700; font-size: 0.875rem; line-height: 1; color: #fff;
}

/* galaxy diagrams in the books' dark blueprint panel (Base p.8, p.32) */
.diagram {
  margin: 14px 0 6px; padding: 14px 14px 12px;
  background:
    repeating-linear-gradient(0deg, rgba(140, 185, 255, 0.14) 0 1px, transparent 1px 17px),
    repeating-linear-gradient(90deg, rgba(140, 185, 255, 0.14) 0 1px, transparent 1px 17px),
    radial-gradient(70% 90% at 50% 45%, #2d5896, #173672 75%);
  border: 3px solid var(--navy); border-radius: 4px;
  box-shadow: inset 0 0 0 1px rgba(170, 179, 188, 0.75), 0 2px 6px rgba(0, 0, 40, 0.3);
}
.diagram img { display: block; max-width: 100%; height: auto; margin: 0 auto; }
.diagram figcaption { max-width: 60ch; margin: 10px auto 0; font-style: italic; font-size: 1rem; line-height: 1.45; color: #eef2ff; text-align: center; }

/* source tags — pills, one fill per book */
.tag {
  display: inline-block; padding: 3px 11px 2px;
  font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 0.8125rem; line-height: 1.3;
  letter-spacing: 0.06em; text-transform: uppercase; white-space: nowrap;
  border: 1.5px solid #111; border-radius: 999px;
}
.tag-core { background: var(--royal); color: #fff; border-color: var(--royal-dk); }
.tag-se   { background: #fff; color: #111; border-color: #111; }
.tag-sot  { background: #6a1f9e; color: #fff; border-color: #3b0d5c; }
.tag-faq  { background: var(--yellow); color: #111; border-color: #111; }
.tag-mod  { background: #d10000; color: #fff; border-color: #5c0000; }
.tag-var  { background: #0b6b3a; color: #fff; border-color: #043a1e; }
.tag-fote { background: #111; color: var(--gold-ink); border-color: #000; }

/* citations: the black "Page N" capsule with its red jewels */
.src-line {
  position: relative; display: inline-block; max-width: calc(100% - 12px);
  margin: 12px 0 0 7px; padding: 3px 20px 4px;
  font-family: "Arimo", Arial, sans-serif; font-size: 0.875rem; line-height: 1.4; letter-spacing: 0.02em;
  color: #fff;
  background:
    linear-gradient(135deg, transparent 5px, #0d0d0d 5.5px) top left / 51% 51% no-repeat,
    linear-gradient(225deg, transparent 5px, #0d0d0d 5.5px) top right / 51% 51% no-repeat,
    linear-gradient(315deg, transparent 5px, #0d0d0d 5.5px) bottom right / 51% 51% no-repeat,
    linear-gradient(45deg, transparent 5px, #0d0d0d 5.5px) bottom left / 51% 51% no-repeat;
}
.src-line::before, .src-line::after {
  content: ""; position: absolute; top: 50%; width: 12px; height: 12px; margin-top: -6px;
  border-radius: 50%; background: var(--jewel); box-shadow: 0 0 0 1px #3a0000;
}
.src-line::before { left: -6px; }
.src-line::after { right: -6px; }

/* =============================================================================
   Rules reference — closed: a heading on the page; open: the blue title pill over its text
   ============================================================================= */
#reference { display: flex; flex-direction: column; gap: 10px; }
.ref { background: var(--paper); border: 1px solid #7a5e14; border-radius: 8px; overflow: hidden; }
.ref > summary {
  display: flex; align-items: center; gap: 12px;
  min-height: 52px; padding: 10px 18px 10px 12px;
  cursor: pointer; list-style: none;
  font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 1.1rem; line-height: 1.3;
  color: var(--royal);
}
.ref > summary::-webkit-details-marker { display: none; }
.ref > summary::before {
  content: "+"; flex: 0 0 auto;
  display: grid; place-items: center; width: 30px; height: 30px;
  border-radius: 50%; background: var(--royal); color: #fff;
  font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 1.35rem; line-height: 1;
}
.ref > summary:hover { background: rgba(0, 3, 183, 0.08); }
.ref > summary:focus-visible { outline: 3px solid var(--royal); outline-offset: -5px; }
.ref[open] > summary { color: #fff; background: var(--royal); }
.ref[open] > summary::before { content: "\2212"; color: var(--royal); background: #fff; }
.ref[open] > summary:hover { background: #1116cf; }
.ref[open] > summary:focus-visible { outline-color: var(--yellow); }
.ref-body { padding: 16px 24px 20px; }
.ref-body > p, .ref-body > ul, .ref-body > ol, .ref-body > dl, .ref-body > h4, .ref-body > .sc-card { max-width: 75ch; }
.ref-body h4 {
  margin: 20px 0 6px;
  font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 1.06rem; line-height: 1.3;
  font-variant: small-caps; letter-spacing: 0.05em; color: var(--navy);
}
.ref-body h4:first-child { margin-top: 2px; }
.ref-body p { margin-bottom: 10px; }
.ref-body b { color: var(--royal-dk); }

/* a Strategy Card in the reference: the card's black title bar, framed in its colour */
.sc-card {
  --sc: #777;
  margin: 12px 0; overflow: hidden;
  background: rgba(255, 255, 255, 0.5);
  border: 2px solid var(--sc); border-radius: 6px;
}
.ref-body > .sc-card:nth-of-type(1) { --sc: var(--sc1); }
.ref-body > .sc-card:nth-of-type(2) { --sc: var(--sc2); }
.ref-body > .sc-card:nth-of-type(3) { --sc: var(--sc3); }
.ref-body > .sc-card:nth-of-type(4) { --sc: var(--sc4); }
.ref-body > .sc-card:nth-of-type(5) { --sc: var(--sc5); }
.ref-body > .sc-card:nth-of-type(6) { --sc: var(--sc6); }
.ref-body > .sc-card:nth-of-type(7) { --sc: var(--sc7); }
.ref-body > .sc-card:nth-of-type(8) { --sc: var(--sc8); }
.sc-card > p, .sc-card > ul { margin-left: 14px; margin-right: 14px; }
.sc-card > p:nth-child(2) { margin-top: 10px; }
.sc-card > .sc-title { margin: 0; }
.sc-card > :last-child { margin-bottom: 12px; }
.sc-title {
  display: flex; flex-wrap: wrap; align-items: center; gap: 4px 12px;
  padding: 7px 14px 7px 8px; margin: 0;
  font-family: "Audiowide", "Arimo", Arial, sans-serif; font-size: 1.02rem; line-height: 1.25;
  text-transform: uppercase; letter-spacing: 0.02em;
  color: #fff; background: #0b0b0b; border-bottom: 3px solid var(--sc);
}
.sc-num {
  display: inline-grid; place-items: center; width: 32px; height: 32px; margin: 0;
  font-family: "Audiowide", "Arimo", Arial, sans-serif; font-size: 1.1rem; line-height: 1;
  color: #fff; background: #000; border: 2px solid var(--sc);
}
.sc-src {
  margin-left: auto;
  font-family: "Arimo", Arial, sans-serif; font-size: 0.8125rem; font-weight: 400;
  text-transform: none; letter-spacing: 0.02em; color: #d0d0d0;
}

.tbl-wrap { overflow-x: auto; margin: 8px 0 12px; border: 1px solid var(--paper-ln); border-radius: 6px; }
.tbl { border-collapse: collapse; width: 100%; font-size: 1rem; line-height: 1.45; background: rgba(255, 255, 255, 0.55); }
.tbl th, .tbl td { padding: 7px 10px; text-align: left; vertical-align: top; border: 1px solid rgba(110, 80, 10, 0.4); }
.tbl th {
  font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 0.95rem;
  color: #fff; background: var(--royal); border-color: var(--royal-dk);
}
.tbl tbody tr:nth-child(even) td { background: rgba(248, 212, 116, 0.22); }
.tbl tr > :first-child { border-left: 0; }
.tbl tr > :last-child { border-right: 0; }
.tbl thead th { border-top: 0; }
.tbl tbody tr:last-child td { border-bottom: 0; }

.defs { margin: 6px 0 12px; }
.defs dt { margin-top: 10px; font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 1rem; color: var(--navy); }
.defs dd { margin: 2px 0 0 18px; }

/* Rulebook icons (css/icons.css, icons standard v1): a set of inline icons that belong together never wraps apart */
.ic-set { white-space: nowrap; }

/* =============================================================================
   Search
   ============================================================================= */
.rsearch-wrap { margin: 4px 0 16px; }
#rsearch {
  width: 100%; min-height: 52px; padding: 12px 20px 12px 50px;
  font: inherit; font-size: 1.05rem; color: var(--ink);
  background: #fffdf4 url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Ccircle cx='10' cy='10' r='6.5' fill='none' stroke='%23030e40' stroke-width='2.4'/%3E%3Cpath d='M15 15l6 6' stroke='%23030e40' stroke-width='2.6' stroke-linecap='round'/%3E%3C/svg%3E") 17px 50% / 21px no-repeat;
  border: 2px solid var(--navy); border-radius: 999px;
  box-shadow: inset 0 2px 3px rgba(0, 0, 0, 0.12);
  -webkit-appearance: none; appearance: none;
}
#rsearch::placeholder { color: #5a5242; font-style: italic; opacity: 1; }
#rresults { display: flex; flex-direction: column; gap: 8px; }
.rhint { font-style: italic; color: var(--muted); }
.rhit {
  padding: 10px 18px 12px;
  background: var(--paper); border: 1px solid var(--paper-ln); border-left: 5px solid var(--royal); border-radius: 6px;
}
.rhit-src {
  margin-bottom: 4px;
  font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 0.875rem; line-height: 1.35;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--royal);
}
.rhit-src::before {
  content: ""; display: inline-block; width: 9px; height: 9px; margin-right: 8px; vertical-align: 1px;
  border-radius: 50%; background: var(--jewel); box-shadow: 0 0 0 1px #3a0000;
}
.rhit-text { max-width: 75ch; font-size: 1rem; line-height: 1.55; color: var(--ink); }
.rhit-text mark { color: #000; background: var(--yellow); border-radius: 2px; box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.3); }

/* =============================================================================
   Components glossary and rulebook search tokens (css/components.css and css/search.css read these)
   ============================================================================= */
#components, .aid-srch {
  --comp-surface: #fdf0ca;  --comp-fig: #fad575;  --comp-ink: #16120a;  --comp-muted: #4b3c12;
  --comp-line: #7a5e14;     --comp-accent: #0003b7;  --comp-accent-ink: #ffffff;
  --comp-head-font: "Arimo", Arial, "Helvetica Neue", Helvetica, sans-serif;  --comp-radius: 6px;
}
#components[hidden] { display: none; }

/* =============================================================================
   Footer — the page's bottom bar, rail and capsule
   ============================================================================= */
.footer {
  position: relative; margin-top: 30px;
  padding: 34px 18px 32px; text-align: center;
  color: #fff;
  background:
    repeating-linear-gradient(118deg, rgba(0, 0, 50, 0.16) 0 2px, transparent 2px 11px),
    radial-gradient(30% 140% at 20% 30%, rgba(80, 120, 255, 0.28), transparent 70%),
    radial-gradient(34% 160% at 80% 70%, rgba(0, 12, 90, 0.35), transparent 70%),
    linear-gradient(180deg, #173fb8, #0f2f95);
}
.footer::before {   /* the steel rail */
  content: ""; position: absolute; left: 0; right: 0; top: 0; height: 9px;
  background: linear-gradient(180deg, rgba(85, 72, 37, 0.9) 0 1px, #1a150c 1px 2px, #252728 2px 3px, #545b59 3px 4px,
    #87908b 4px 5px, #b3b9b3 5px 6px, #2e3741 6px 7px, rgba(20, 40, 120, 0.8) 7px 9px);
}
.foot-cap {   /* the "Page N" capsule, jewels at each end */
  position: absolute; left: 50%; top: -8px; width: 128px; height: 26px; margin-left: -64px;
  background:
    linear-gradient(135deg, transparent 6px, #0d0d0d 6.5px) top left / 51% 51% no-repeat,
    linear-gradient(225deg, transparent 6px, #0d0d0d 6.5px) top right / 51% 51% no-repeat,
    linear-gradient(315deg, transparent 6px, #0d0d0d 6.5px) bottom right / 51% 51% no-repeat,
    linear-gradient(45deg, transparent 6px, #0d0d0d 6.5px) bottom left / 51% 51% no-repeat;
  filter: drop-shadow(0 0 1px #9ea49e);
}
.foot-cap::before, .foot-cap::after {
  content: ""; position: absolute; top: 50%; width: 13px; height: 13px; margin-top: -6.5px;
  border-radius: 50%; background: var(--jewel); box-shadow: 0 0 0 1px #3a0000;
}
.foot-cap::before { left: -6px; }
.foot-cap::after { right: -6px; }
.footer p { max-width: 72ch; margin: 0 auto; font-style: italic; font-size: 1rem; line-height: 1.6; color: #f4f6ff; }

/* =============================================================================
   Responsive
   ============================================================================= */
@media (max-width: 860px) {
  .mast-art { height: 230px; }
  .mast-art img { width: 100%; max-width: 100%; -webkit-mask-image: none; mask-image: none; }
}
@media (max-width: 640px) {
  body { font-size: 18px; }
  .mast-sky { padding: 14px 12px 12px; }
  .mast-logo { width: min(360px, 92vw); }
  .mast-art { height: 150px; }
  .mast-foot { padding: 10px 12px 12px; }
  .mast-title { letter-spacing: 0.1em; padding-left: 0.1em; }
  .mast-credit { margin-top: 4px; font-size: 0.8125rem; letter-spacing: 0.1em; }
  .mast::after { height: 26px; }
  main { padding: 18px 16px 56px; }
  .sec { margin-top: 36px; }
  .sec > h2 { min-width: 0; padding: 6px 24px 7px; font-size: 1.38rem; }
  .cfg, .teach-panel { margin: 30px 2px 34px; padding: 28px 14px 26px; }
  .cfg::before, .cfg::after, .teach-panel::before, .teach-panel::after { left: -8px; right: -8px; --tab: 20px; --step: 58px; }
  .chip { flex: 1 1 100%; }
  .pbtns { gap: 8px; }
  .pbtn { width: 46px; height: 46px; font-size: 1.35rem; }
  .slots { gap: 10px; }
  .slot { padding: 9px 18px 11px 14px; column-gap: 8px; min-height: 66px; }
  .slot .slot-n { width: 32px; height: 32px; font-size: 1.15rem; }
  .slot .slot-name { font-size: 0.85rem; }
  .slot .slot-swap { padding-left: 40px; }
  .mods { grid-template-columns: 1fr; }
  .phase-title { font-size: 1.1rem; padding: 4px 20px 5px; }
  /* phones: the ball sits beside the heading and the text runs the card's full width */
  .step { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 0 12px; padding: 13px 14px 14px 12px; }
  .step-body { display: contents; }
  .step-num { grid-column: 1; grid-row: 1; align-self: start; width: 38px; height: 38px; font-size: 1.2rem; margin-top: 0; }
  .step-head { grid-column: 2; grid-row: 1; align-self: center; margin: 0 0 4px; }
  .step-text, .step > .step-body > .src-line { grid-column: 1 / -1; }
  .step > .step-body > .src-line { justify-self: start; }
  .step-text { margin-top: 6px; }
  .ref > summary { font-size: 1.04rem; padding: 9px 14px 9px 10px; }
  .ref-body { padding: 14px 14px 18px; }
  .sc-card > p, .sc-card > ul { margin-left: 11px; margin-right: 11px; }
  /* the Units table (Unit · Available · Cost · Rules) becomes one card per unit instead of four squeezed columns */
  .tbl-wrap:has(.tbl th:nth-child(4)) { overflow: visible; border: 0; border-radius: 0; }
  .tbl:has(th:nth-child(4)), .tbl:has(th:nth-child(4)) tbody, .tbl:has(th:nth-child(4)) tr,
  .tbl:has(th:nth-child(4)) td { display: block; width: auto; background: none; }
  .tbl:has(th:nth-child(4)) thead {
    position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
  }
  .tbl:has(th:nth-child(4)) tr {
    margin: 0 0 8px; padding: 8px 12px 10px;
    background: rgba(255, 255, 255, 0.55); border: 1px solid rgba(110, 80, 10, 0.4); border-left: 4px solid var(--royal); border-radius: 6px;
  }
  .tbl:has(th:nth-child(4)) tbody tr:nth-child(even) td { background: none; }
  .tbl:has(th:nth-child(4)) td { padding: 0; border: 0; }
  .tbl:has(th:nth-child(4)) td:first-child { margin-bottom: 2px; font-family: "Arimo", Arial, sans-serif; font-size: 1.05rem; }
  .tbl:has(th:nth-child(4)) td:nth-child(2), .tbl:has(th:nth-child(4)) td:nth-child(3) { display: inline; }
  .tbl:has(th:nth-child(4)) td:nth-child(2)::before, .tbl:has(th:nth-child(4)) td:nth-child(3)::before {
    font-family: "Arimo", Arial, sans-serif; font-weight: 700; font-size: 0.875rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--muted);
  }
  .tbl:has(th:nth-child(4)) td:nth-child(2)::before { content: "Available "; }
  .tbl:has(th:nth-child(4)) td:nth-child(3)::before { content: "\00a0 · Cost "; }
  .tbl:has(th:nth-child(4)) td:nth-child(4) { margin-top: 4px; }
  .teach-top h3 { font-size: 1.25rem; }
  .diagram { padding: 10px 8px 10px; }
  .rhit { padding: 10px 14px 12px; }
}
/* narrow phones: the number sits above the name so the longest names (Bureaucracy, Technology II) fit */
@media (max-width: 480px) {
  .slot { align-content: flex-start; row-gap: 5px; }
  .slot .slot-name { flex: 0 0 100%; }
  .slot .slot-swap { margin-top: 0; padding-left: 0; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
  html { scroll-behavior: auto; }
  .pbtn.on, .slot.can:hover { transform: none; }
}