:root {
  color-scheme: dark;
  --ink: #edf6ed;
  --muted: #9aaca5;
  --subtle: #71857d;
  --paper: #09110f;
  --paper-raised: #101b17;
  --paper-soft: #15231d;
  --line: rgba(205, 231, 211, 0.13);
  --jade: #78d09c;
  --jade-bright: #a4e6b8;
  --gold: #d8b970;
  --danger: #d78675;
  --radius: 1.25rem;
  --max: 72rem;
  --shadow: 0 1.5rem 4rem rgba(0, 0, 0, 0.28);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 20rem;
  background:
    radial-gradient(circle at 15% 5%, rgba(68, 130, 93, 0.18), transparent 25rem),
    radial-gradient(circle at 88% 28%, rgba(150, 116, 58, 0.12), transparent 27rem),
    var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}

a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.skip-link {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  transform: translateY(-200%);
  padding: 0.65rem 1rem;
  background: var(--jade-bright);
  color: #07120c;
  border-radius: 0.5rem;
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: relative;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(calc(100% - 2rem), var(--max));
  margin: 0 auto;
  padding: 1.1rem 0;
  border-bottom: 1px solid var(--line);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  text-decoration: none;
}
.brand-mark {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  border: 1px solid rgba(164, 230, 184, 0.45);
  background: rgba(120, 208, 156, 0.08);
  color: var(--jade-bright);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.2rem;
  transform: rotate(45deg);
}
.brand-mark i { font-style: normal; transform: rotate(-45deg); }
.brand > span:last-child { display: grid; line-height: 1.1; }
.brand strong { letter-spacing: 0.15em; }
.brand small { margin-top: 0.35rem; color: var(--subtle); font-size: 0.58rem; letter-spacing: 0.13em; }
nav { display: flex; align-items: center; gap: 1rem; }
nav a { color: var(--muted); font-size: 0.85rem; text-decoration: none; }
nav a:hover, nav a:focus-visible { color: var(--jade-bright); }

.hero, .section, footer, .legal-main {
  width: min(calc(100% - 2rem), var(--max));
  margin-inline: auto;
}
.hero {
  display: grid;
  gap: 3rem;
  min-height: 42rem;
  padding: 5rem 0 4rem;
  align-items: center;
}
.hero-copy { position: relative; z-index: 2; }
.eyebrow, .kicker {
  color: var(--gold);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.eyebrow span {
  display: inline-block;
  margin-right: 0.55rem;
  padding: 0.14rem 0.45rem;
  border: 1px solid rgba(216, 185, 112, 0.45);
  border-radius: 999px;
}
h1, h2, h3, p { margin-top: 0; }
h1, h2 { font-family: Georgia, "Noto Serif SC", "Songti SC", serif; font-weight: 500; }
h1 { margin-bottom: 1.5rem; font-size: clamp(2.5rem, 12vw, 5rem); line-height: 1.08; letter-spacing: -0.04em; }
h1 em { color: var(--jade-bright); font-style: normal; }
h2 { margin-bottom: 1rem; font-size: clamp(2rem, 8vw, 3.35rem); line-height: 1.16; }
h3 { margin-bottom: 0.55rem; font-size: 1.1rem; }
.lead { max-width: 40rem; color: #c2d0ca; font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin: 2rem 0 1rem; }
.button, .download-button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.2rem;
  border: 1px solid transparent;
  border-radius: 0.7rem;
  font-weight: 700;
  text-decoration: none;
  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
}
.button:hover, .button:focus-visible, .download-button:not(.is-disabled):hover, .download-button:not(.is-disabled):focus-visible { transform: translateY(-2px); }
.button.primary { background: var(--jade-bright); color: #07120c; }
.button.secondary { border-color: var(--line); background: rgba(255, 255, 255, 0.025); color: var(--ink); }
.alpha-note { max-width: 38rem; color: var(--subtle); font-size: 0.78rem; }

.world-orbit { position: relative; width: min(80vw, 22rem); aspect-ratio: 1; margin-inline: auto; }
.world-core {
  position: absolute;
  inset: 27%;
  display: grid;
  place-content: center;
  border: 1px solid rgba(164, 230, 184, 0.45);
  border-radius: 50%;
  background: radial-gradient(circle at 40% 30%, #2c6245, #10251b 55%, #08120e 100%);
  box-shadow: 0 0 5rem rgba(91, 180, 126, 0.24), inset 0 0 2rem rgba(172, 234, 189, 0.15);
  text-align: center;
}
.world-core span { font-family: Georgia, "Songti SC", serif; font-size: 1.7rem; letter-spacing: 0.16em; }
.world-core small { color: var(--jade); font-size: 0.58rem; letter-spacing: 0.18em; }
.orbit { position: absolute; inset: 10%; border: 1px solid rgba(164, 230, 184, 0.15); border-radius: 50%; transform: rotate(-18deg) scaleY(0.55); }
.orbit-two { inset: 0; border-color: rgba(216, 185, 112, 0.15); transform: rotate(36deg) scaleY(0.6); }
.star { position: absolute; width: 0.38rem; height: 0.38rem; border-radius: 50%; background: var(--gold); box-shadow: 0 0 1rem var(--gold); }
.star-a { top: 17%; left: 19%; }.star-b { right: 4%; top: 46%; }.star-c { bottom: 12%; left: 36%; background: var(--jade); }

.section { padding: 5rem 0; border-top: 1px solid var(--line); }
.section-heading { max-width: 50rem; margin-bottom: 2.5rem; }
.section-heading > p:last-child, .combat-copy > p, .legal-hero > p:last-child { color: var(--muted); }
.section-heading.compact { margin-bottom: 1.5rem; }
.feature-grid { display: grid; gap: 1rem; }
.feature-grid article {
  padding: 1.5rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, rgba(255,255,255,0.04), rgba(255,255,255,0.008));
}
.feature-grid article p { margin-bottom: 0; color: var(--muted); font-size: 0.9rem; }
.feature-index { display: block; margin-bottom: 2.5rem; color: var(--gold); font: 0.7rem/1 monospace; letter-spacing: 0.1em; }

.combat-section { display: grid; gap: 3rem; }
.rule-list { display: grid; gap: 0.8rem; padding: 0; list-style: none; }
.rule-list li { padding-left: 1rem; border-left: 2px solid rgba(120, 208, 156, 0.38); color: var(--muted); }
.rule-list strong { color: var(--ink); }
.pool-demo { padding: 1.2rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper-raised); box-shadow: var(--shadow); }
.pool-header { display: flex; justify-content: space-between; gap: 1rem; padding-bottom: 1rem; color: var(--muted); font-size: 0.75rem; }
.pool-header strong { color: var(--jade-bright); }
.skill-card { display: grid; grid-template-columns: auto 1fr auto; gap: 0.8rem; align-items: center; margin-top: 0.65rem; padding: 0.85rem; border: 1px solid var(--line); border-radius: 0.8rem; background: rgba(255,255,255,0.025); }
.skill-card.skill-primary { border-color: rgba(120, 208, 156, 0.28); }
.skill-symbol, .channel-mark { display: grid; place-items: center; width: 2.4rem; height: 2.4rem; border-radius: 0.65rem; background: rgba(120,208,156,0.11); color: var(--jade-bright); font-family: Georgia, serif; }
.skill-card div { display: grid; }
.skill-card small { color: var(--subtle); }
.skill-card b { color: var(--gold); }
.probability-bar { display: grid; grid-template-columns: 7fr 3fr; height: 0.3rem; margin-top: 1.1rem; overflow: hidden; border-radius: 999px; }
.probability-bar i:first-child { background: var(--jade); }.probability-bar i:last-child { background: var(--gold); }
.pool-demo > p { margin: 0.8rem 0 0; color: var(--subtle); font-size: 0.74rem; }

.journey-loop { display: grid; gap: 0; padding: 0; list-style: none; }
.journey-loop li { display: grid; grid-template-columns: auto 1fr; gap: 1rem; padding: 1.2rem 0; border-bottom: 1px solid var(--line); }
.journey-loop li > span { display: grid; place-items: center; width: 2rem; height: 2rem; border: 1px solid rgba(216,185,112,0.35); border-radius: 50%; color: var(--gold); }
.journey-loop strong { font-size: 1.05rem; }
.journey-loop p { margin-bottom: 0; color: var(--muted); font-size: 0.88rem; }

.download-grid { display: grid; gap: 1rem; }
.download-card { padding: 1.35rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--paper-raised); }
.download-card-head { display: flex; align-items: center; gap: 0.85rem; }
.download-card-head > div { min-width: 0; flex: 1; }
.download-card-head h3, .download-card-head p { margin: 0; }
.download-card-head p { color: var(--subtle); font-size: 0.75rem; }
.availability { align-self: flex-start; padding: 0.18rem 0.5rem; border: 1px solid rgba(120,208,156,0.32); border-radius: 999px; color: var(--jade-bright); font-size: 0.65rem; white-space: nowrap; }
.download-card dl { margin: 1.5rem 0; }
.download-card dl div { padding: 0.7rem 0; border-top: 1px solid var(--line); }
.download-card dt { color: var(--subtle); font-size: 0.7rem; }
.download-card dd { margin: 0.2rem 0 0; overflow-wrap: anywhere; }
code { color: #b8d9c2; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.72rem; }
.download-button { width: 100%; background: var(--jade-bright); color: #07120c; }
.download-button.is-disabled { cursor: not-allowed; border-color: var(--line); background: rgba(255,255,255,0.035); color: var(--subtle); }
.notice { margin-top: 1rem; color: var(--danger); }

.privacy-callout { display: grid; gap: 1.5rem; align-items: center; }
.privacy-callout p { color: var(--muted); }
footer { display: grid; gap: 0.65rem; padding: 2rem 0 3rem; border-top: 1px solid var(--line); color: var(--subtle); font-size: 0.75rem; }
footer div { display: flex; gap: 0.8rem; align-items: baseline; }
footer strong { color: var(--ink); letter-spacing: 0.12em; }
footer p { margin: 0; }
footer a { color: var(--muted); }

.legal-main { padding: 4rem 0 6rem; }
.legal-hero { max-width: 48rem; margin-bottom: 3rem; }
.legal-hero h1 { margin-bottom: 1rem; }
.legal-content { display: grid; grid-template-columns: minmax(0, 1fr); gap: 1rem; max-width: 50rem; min-width: 0; }
.legal-content section { min-width: 0; padding: 1.3rem; border: 1px solid var(--line); border-radius: 1rem; background: rgba(255,255,255,0.018); }
.legal-content h2 { font-family: inherit; font-size: 1.1rem; font-weight: 700; }
.legal-content p { margin-bottom: 0; color: var(--muted); }
.legal-content code { overflow-wrap: anywhere; }

:focus-visible { outline: 2px solid var(--jade-bright); outline-offset: 3px; }
@media (min-width: 46rem) {
  .site-header { width: min(calc(100% - 4rem), var(--max)); }
  .hero, .section, footer, .legal-main { width: min(calc(100% - 4rem), var(--max)); }
  .hero { grid-template-columns: minmax(0, 1.35fr) minmax(18rem, 0.65fr); }
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
  .combat-section { grid-template-columns: minmax(0, 1.15fr) minmax(19rem, 0.85fr); align-items: center; }
  .download-grid { grid-template-columns: repeat(2, 1fr); }
  .privacy-callout { grid-template-columns: 1fr auto; }
  footer { grid-template-columns: 1fr auto; }
  footer > p:nth-child(2) { grid-column: 1 / -1; }
}
@media (max-width: 38rem) {
  .site-header { align-items: flex-start; }
  nav { display: grid; grid-template-columns: repeat(2, auto); gap: 0.35rem 0.8rem; text-align: right; }
  h1 br { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}