:root {
  --bg: #090c0a;
  --panel: #121712;
  --panel-2: #182018;
  --line: rgba(197, 217, 177, .18);
  --line-strong: rgba(197, 217, 177, .34);
  --text: #eef3e8;
  --muted: #a6b19f;
  --accent: #a8d66f;
  --accent-strong: #c7f08e;
  --warning: #e5b86a;
  --danger: #df7868;
  --mono: "Cascadia Mono", Consolas, monospace;
  --sans: Inter, "Noto Sans SC", "Microsoft YaHei", sans-serif;
}
* { box-sizing: border-box; }
html { background: var(--bg); scroll-behavior: smooth; }
body { margin: 0; color: var(--text); background: radial-gradient(circle at 90% 0, rgba(124,159,85,.11), transparent 30rem), var(--bg); font-family: var(--sans); line-height: 1.65; }
body::before { position: fixed; inset: 0; z-index: -1; content: ""; opacity: .15; background-image: linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px); background-size: 32px 32px; }
a { color: inherit; }
button, select, input { font: inherit; }
.tool-header { position: sticky; top: 0; z-index: 20; display: flex; min-height: 68px; align-items: center; justify-content: space-between; gap: 1rem; padding: 0 max(20px, calc((100vw - 1280px)/2)); border-bottom: 1px solid var(--line); background: rgba(9,12,10,.92); backdrop-filter: blur(18px); }
.tool-brand { display: inline-flex; align-items: center; gap: .7rem; text-decoration: none; }
.brand-mark { display: grid; width: 36px; aspect-ratio: 1; place-items: center; color: #0a1008; background: var(--accent); font: 800 .8rem var(--mono); clip-path: polygon(0 0,100% 0,100% 72%,72% 100%,0 100%); }
.tool-brand strong, .tool-brand small { display: block; line-height: 1.25; }
.tool-brand strong { font: 700 .78rem var(--mono); letter-spacing: .12em; }
.tool-brand small { color: var(--muted); font-size: .67rem; }
.tool-nav { display: flex; gap: .5rem; }
.tool-nav a { padding: .48rem .72rem; color: var(--muted); border: 1px solid transparent; font-size: .78rem; text-decoration: none; }
.tool-nav a:hover, .tool-nav a[aria-current="page"] { color: var(--accent-strong); border-color: var(--line); }
main, footer { width: min(calc(100% - 40px), 1280px); margin-inline: auto; }
.tool-hero { display: grid; grid-template-columns: 1fr minmax(280px,.42fr); align-items: end; gap: 2rem; padding: clamp(5rem,10vw,9rem) 0 4rem; border-bottom: 1px solid var(--line); }
.kicker { margin: 0 0 1rem; color: var(--accent); font: 700 .72rem var(--mono); letter-spacing: .15em; }
h1 { max-width: 13ch; margin: 0; font-size: clamp(2.8rem,7vw,6.5rem); line-height: .98; letter-spacing: -.055em; }
h2 { margin: 0; font-size: clamp(1.7rem,3vw,2.8rem); line-height: 1.15; }
h3 { margin: 0; }
.hero-side { color: var(--muted); }
.snapshot { display: grid; grid-template-columns: repeat(3,1fr); gap: .5rem; margin-top: 1.4rem; }
.snapshot div { padding: .7rem; border: 1px solid var(--line); }
.snapshot span, .snapshot b { display: block; }
.snapshot span { color: var(--muted); font: .58rem var(--mono); }
.snapshot b { margin-top: .2rem; }
.notice { margin: 1.5rem 0 0; padding: 1rem; color: var(--muted); border-left: 2px solid var(--accent); background: rgba(168,214,111,.05); }
.manual-layout { display: grid; grid-template-columns: 220px 1fr; gap: 3rem; padding: 3rem 0 7rem; }
.manual-toc { position: sticky; top: 92px; align-self: start; display: grid; }
.manual-toc a { padding: .65rem 0; color: var(--muted); border-bottom: 1px solid var(--line); font-size: .82rem; text-decoration: none; }
.manual-toc a:hover { color: var(--accent); }
.manual-content { display: grid; min-width: 0; gap: 1rem; }
.rule-section { min-width: 0; padding: clamp(1.4rem,3vw,2.5rem); overflow: hidden; border: 1px solid var(--line); background: rgba(255,255,255,.018); scroll-margin-top: 92px; }
.rule-title { display: grid; grid-template-columns: 3rem 1fr; gap: 1rem; align-items: start; margin-bottom: 1.5rem; }
.rule-number { color: var(--accent); font: .75rem var(--mono); }
.rule-section p { color: var(--muted); }
.formula { display: block; margin: 1.2rem 0; padding: 1rem; overflow-x: auto; color: var(--accent-strong); border: 1px solid var(--line); background: #0a0e0b; font: .83rem var(--mono); }
.rule-grid { display: grid; grid-template-columns: repeat(2,1fr); gap: .6rem; margin-top: 1rem; }
.rule-item { padding: 1rem; border: 1px solid var(--line); background: var(--panel); }
.rule-item strong, .rule-item span { display: block; }
.rule-item span { margin-top: .3rem; color: var(--muted); font-size: .83rem; }
.rule-table { width: 100%; margin-top: 1rem; border-collapse: collapse; font-size: .83rem; }
.rule-table th, .rule-table td { padding: .75rem; text-align: left; vertical-align: top; border: 1px solid var(--line); }
.rule-table th { color: var(--accent); background: var(--panel-2); }
.source-note { margin-top: 1.5rem; color: var(--muted); font: .68rem var(--mono); }

.sim-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; padding: 3rem 0 1rem; }
.sim-card { padding: clamp(1.2rem,3vw,2rem); border: 1px solid var(--line); background: var(--panel); }
.sim-card.attacker { border-top: 2px solid var(--accent); }
.sim-card.defender { border-top: 2px solid var(--danger); }
.sim-card h2 { font-size: 1.35rem; }
.field { display: grid; gap: .35rem; margin-top: 1rem; }
.field label, .field > span { color: var(--muted); font-size: .72rem; }
select, input[type="number"] { width: 100%; min-height: 44px; padding: .55rem .65rem; color: var(--text); border: 1px solid var(--line); background: #0b0f0c; }
.state-row { display: grid; grid-template-columns: 1fr 1fr; gap: .6rem; }
.check-row { display: flex; align-items: center; gap: .5rem; min-height: 44px; padding: .6rem; color: var(--muted); border: 1px solid var(--line); font-size: .8rem; }
.unit-readout { display: grid; grid-template-columns: repeat(4,1fr); gap: .4rem; margin-top: 1rem; }
.unit-readout div { padding: .55rem; border: 1px solid var(--line); }
.unit-readout span, .unit-readout b { display: block; }
.unit-readout span { color: var(--muted); font: .56rem var(--mono); }
.simulation-controls { display: flex; align-items: end; gap: .8rem; padding: 1rem; border: 1px solid var(--line); background: var(--panel); }
.simulation-controls .field { flex: 1; margin: 0; }
.button { min-height: 46px; padding: .65rem 1rem; color: #0b1108; border: 1px solid var(--accent); background: var(--accent); font-weight: 700; cursor: pointer; }
.button:hover { background: var(--accent-strong); }
.result-panel { display: grid; grid-template-columns: .7fr 1.3fr; gap: 1rem; margin: 1rem 0 7rem; }
.result-number, .result-detail { padding: clamp(1.4rem,3vw,2rem); border: 1px solid var(--line); background: var(--panel); }
#result-damage { display: block; color: var(--accent-strong); font: 700 clamp(3.5rem,8vw,7rem)/1 var(--mono); }
#result-status { display: block; min-height: 2.4rem; color: var(--muted); }
.result-verdict { display: grid; gap: .25rem; margin-top: 1.25rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.result-verdict span { color: var(--muted); font: 700 .62rem/1.3 var(--mono); letter-spacing: .12em; }
.result-verdict b { color: var(--text); font-size: 1.15rem; line-height: 1.35; }
.result-verdict small { color: var(--muted); font-size: .74rem; line-height: 1.55; }
.result-number[data-outcome="destroyed"] { border-top: 2px solid var(--accent); }
.result-number[data-outcome="counter-kill"] { border-top: 2px solid var(--danger); }
.result-number[data-outcome="counter-kill"] #result-damage,
.result-number[data-outcome="counter-kill"] .result-verdict b { color: var(--danger); }
.result-number[data-outcome="hit"] { border-top: 2px solid var(--warning); }
.result-number[data-outcome="hit"] .result-verdict b { color: var(--warning); }
.result-number[data-outcome="unavailable"] { border-top: 2px solid var(--muted); }
.result-number[data-outcome="unavailable"] #result-damage { color: var(--muted); }
.result-detail ol { margin: 0; padding-left: 1.3rem; color: var(--muted); }
.result-detail li { margin: .55rem 0; }
.warning { color: var(--warning); }
footer { display: flex; justify-content: space-between; gap: 1rem; padding: 2rem 0; color: var(--muted); border-top: 1px solid var(--line); font-size: .72rem; }

@media (max-width: 760px) {
  .tool-header { min-height: 62px; }
  .tool-nav a:first-child { display: none; }
  main, footer { width: min(calc(100% - 28px),1280px); }
  .tool-hero { grid-template-columns: 1fr; padding-top: 4rem; }
  .manual-layout { grid-template-columns: 1fr; }
  .manual-toc { position: static; grid-template-columns: repeat(2,1fr); gap: 0 1rem; }
  .sim-layout, .result-panel { grid-template-columns: 1fr; }
  .rule-grid { grid-template-columns: 1fr; }
  .rule-table { display: block; width: 100%; max-width: 100%; overflow-x: auto; white-space: nowrap; }
  footer { display: block; }
}
@media (max-width: 460px) {
  .tool-brand small { display: none; }
  .tool-nav a { padding-inline: .4rem; }
  .snapshot, .unit-readout { grid-template-columns: repeat(2,1fr); }
  .state-row { grid-template-columns: 1fr; }
  .simulation-controls { align-items: stretch; flex-direction: column; }
  .simulation-controls .field, .simulation-controls .button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }