:root {
  --dw-bg: #0b1230; --dw-fg: #eef0ff; --dw-accent: #5ff3ff; --dw-muted: #a3acd6; --dw-panel: rgba(14, 22, 58, .96);
  --dw-font-body: 'Fraunces', Georgia, serif; --dw-font-display: 'Almendra', Georgia, serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace; --gold: #e9c46a; --deep: #070b20; --line: #26305e;
}
[hidden] { display: none !important; }
body { font-size: 1.08rem; background: radial-gradient(80% 50% at 50% 0%, #17215a, var(--dw-bg) 70%) fixed; }
section { padding: clamp(56px, 9vw, 120px) clamp(16px, 4vw, 48px); }
h1, h2 { font-family: var(--dw-font-display); font-weight: 400; line-height: 1.1; margin: 0 0 .45em; }
h2 { font-size: clamp(1.9rem, 4.4vw, 3rem); color: var(--gold); }

.topbar { position: fixed; inset: 0 0 auto; z-index: 20; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px clamp(16px, 3vw, 32px); background: linear-gradient(#0b1230f2, #0b123000); }
.brand { font-family: var(--dw-font-display); font-size: 1.25rem; color: var(--dw-fg); text-decoration: none; white-space: nowrap; }
.brand b { color: var(--dw-accent); font-weight: 400; text-shadow: 0 0 12px #5ff3ff88; }
.topbar nav { display: flex; align-items: center; gap: clamp(10px, 2vw, 22px); font-family: var(--mono); font-size: .85rem; }
.topbar nav a { color: var(--dw-fg); text-decoration: none; opacity: .8; white-space: nowrap; }
.topbar nav a:hover { opacity: 1; color: var(--dw-accent); }
.dw-audio { white-space: nowrap; }
@media (max-width: 560px) { .topbar nav a { display: none; } .brand { font-size: 1.05rem; } }

.hero { position: relative; min-height: 100svh; display: grid; align-items: end; padding: 0; overflow: hidden; }
.hero-art { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: 45% 40%; }
.hero-shade { position: absolute; inset: 0; background: linear-gradient(transparent 35%, #0b1230e6 68%, #0b1230 96%); }
.hero-copy { position: relative; z-index: 2; max-width: 720px; padding: 0 clamp(16px, 5vw, 64px) clamp(44px, 7vw, 90px); }
.kicker { font-family: var(--mono); font-size: .8rem; letter-spacing: .16em; text-transform: uppercase; color: var(--dw-accent); margin: 0 0 1rem; }
.hero h1 { font-size: clamp(2.4rem, 6.4vw, 4.6rem); text-shadow: 0 4px 30px #000; }
.hero h1 span { color: var(--dw-accent); text-shadow: 0 0 24px #5ff3ffaa; }
.lede { font-size: clamp(1.05rem, 1.7vw, 1.22rem); max-width: 620px; }
.cta { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 1.4rem; }
.btn { display: inline-block; padding: .8em 1.4em; border: 1px solid #eef0ff55; color: var(--dw-fg); text-decoration: none; font-family: var(--mono); font-size: .9rem; border-radius: 999px; }
.btn:hover { border-color: var(--dw-accent); color: var(--dw-accent); }
.btn-glow { background: var(--dw-accent); color: #04121a; border-color: var(--dw-accent); font-weight: 700; box-shadow: 0 0 24px #5ff3ff66; }
.btn-glow:hover { color: #04121a; background: #9ff8ff; }
.hs { position: absolute; z-index: 3; width: 60px; height: 60px; border-radius: 50%; border: 1px dashed transparent; background: transparent; transform: translate(-50%, -50%); transition: border-color .3s, background .3s; }
.hs:hover, .hs:focus-visible { border-color: var(--gold); background: #e9c46a22; }
.hs.is-found { border-color: #5ff3ff88; }

/* tower */
.tower { border-block: 1px solid var(--line); background: radial-gradient(70% 60% at 50% 30%, #121c4c, var(--deep)); }
.t-head { max-width: 760px; margin: 0 auto 1.4rem; text-align: center; }
.t-head p { opacity: .9; }
.levels { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-bottom: 1.4rem; }
.levels button { font-family: var(--dw-font-display); font-size: 1rem; min-width: 52px; padding: .45em .7em; background: #121a46; color: var(--dw-muted); border: 1px solid var(--line); border-radius: 8px; cursor: pointer; }
.levels button.is-cur { border-color: var(--dw-accent); color: var(--dw-fg); box-shadow: 0 0 14px #5ff3ff44; }
.levels button.is-done { color: var(--gold); }
.levels button.is-done::after { content: ' ✦'; font-size: .8em; }
.board { max-width: 780px; margin: 0 auto; background: linear-gradient(#141e52, #0d1438); border: 1px solid var(--line); border-radius: 18px; padding: clamp(16px, 3vw, 30px); box-shadow: 0 30px 80px #000a, inset 0 0 60px #5ff3ff0d; }
.lvl-name { font-family: var(--dw-font-display); font-size: 1.6rem; color: var(--gold); margin: 0; text-align: center; }
.lvl-hint { text-align: center; font-style: italic; opacity: .85; margin: .2em 0 1.2em; min-height: 1.5em; }
.row-wrap { display: grid; grid-template-columns: auto 1fr; gap: 10px 14px; align-items: center; }
.row-label { margin: 0; font-family: var(--mono); font-size: .72rem; letter-spacing: .14em; text-transform: uppercase; color: var(--dw-muted); }
.runes { display: flex; gap: clamp(4px, 1.4vw, 12px); }
.rune { flex: 1; max-width: 62px; aspect-ratio: 1; border-radius: 50%; background: radial-gradient(circle at 40% 35%, #26305e, #0a0f2a 70%); border: 2px solid #2f3a74; position: relative;
  transition: background .25s, box-shadow .25s, transform .25s; display: grid; place-items: center; font-family: var(--mono); font-size: .8rem; color: #5a6496; }
.rune.on { background: radial-gradient(circle at 40% 35%, #e6ffff, var(--dw-accent) 45%, #138a9a 90%); border-color: #bffaff; box-shadow: 0 0 22px #5ff3ffaa; color: #04212a; }
.rune.flip { transform: scale(1.12); }
.rune.peek { outline: 2px dashed var(--gold); outline-offset: 3px; }
.seal .rune { opacity: .9; transform: scale(.62); }
.seal .rune.on { background: radial-gradient(circle at 40% 35%, #fff4d6, var(--gold) 50%, #8a6a1e 95%); border-color: #ffe8a8; box-shadow: 0 0 14px #e9c46a77; }
.rune.match::after { content: ''; position: absolute; bottom: -9px; left: 50%; width: 6px; height: 6px; margin-left: -3px; border-radius: 50%; background: var(--gold); }
.math { font-family: var(--mono); font-size: clamp(.78rem, 2.2vw, 1rem); text-align: center; color: var(--dw-muted); margin: 1.1em 0; letter-spacing: .06em; overflow-wrap: anywhere; }
.math b { color: var(--dw-accent); font-weight: 600; }
.spells { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
.spell { display: grid; gap: 6px; text-align: left; padding: .8em .9em; background: #0f1740; border: 1px solid #34408a; border-radius: 12px; color: var(--dw-fg); cursor: pointer; font: inherit; transition: border-color .2s, transform .15s, background .2s; }
.spell:hover, .spell:focus-visible { border-color: var(--gold); transform: translateY(-2px); }
.spell.cast-on { background: #1c2a6a; border-color: var(--dw-accent); }
.spell b { font-family: var(--dw-font-display); font-weight: 400; font-size: 1.05rem; color: var(--gold); }
.spell .mask { display: flex; gap: 4px; }
.spell .mask i { width: 12px; height: 12px; border-radius: 50%; border: 1px solid #4a56a0; }
.spell .mask i.on { background: var(--dw-accent); border-color: var(--dw-accent); box-shadow: 0 0 6px #5ff3ff; }
.spell code { font-family: var(--mono); font-size: .78rem; color: var(--dw-muted); }
.spell kbd { font-family: var(--mono); font-size: .7rem; color: var(--dw-muted); justify-self: end; margin-top: -1.6em; }
.b-foot { display: flex; justify-content: space-between; align-items: center; margin-top: 1rem; font-family: var(--mono); font-size: .9rem; color: var(--dw-muted); }
.b-foot b { color: var(--dw-fg); }
.b-foot button, .win button { font-family: var(--mono); font-size: .85rem; padding: .5em 1em; border-radius: 999px; border: 1px solid #eef0ff44; background: transparent; color: var(--dw-fg); cursor: pointer; }
.b-foot button:hover, .win button:hover { border-color: var(--dw-accent); color: var(--dw-accent); }
.win { margin-top: 1rem; padding: 1em 1.2em; border: 1px solid var(--gold); border-radius: 12px; background: #e9c46a14; text-align: center; }
.win p { margin: .2em 0 .6em; }
.win .stars { font-size: 1.4rem; color: var(--gold); letter-spacing: .2em; }
.truename { display: block; margin: 1.6rem auto 0; font-family: var(--mono); background: none; border: 1px dashed var(--gold); color: var(--gold); padding: .7em 1.1em; border-radius: 999px; cursor: pointer; }

/* lesson */
.lesson { max-width: 1060px; margin: 0 auto; }
.lesson > h2 { text-align: center; }
.truth { display: grid; grid-template-columns: auto 1fr; gap: clamp(20px, 4vw, 48px); align-items: center; }
@media (max-width: 720px) { .truth { grid-template-columns: 1fr; justify-items: center; } }
.truth table { border-collapse: collapse; font-family: var(--mono); font-size: 1.1rem; background: #0f1740; border: 1px solid var(--line); }
.truth caption { caption-side: bottom; font-family: var(--dw-font-body); font-style: italic; font-size: .85rem; color: var(--dw-muted); padding-top: .6em; max-width: 220px; }
.truth th, .truth td { padding: .5em 1.1em; border: 1px solid var(--line); text-align: center; }
.truth th { font-size: .75rem; letter-spacing: .12em; text-transform: uppercase; color: var(--gold); font-weight: 400; }
.truth td:last-child { color: var(--dw-accent); }
.found { font-family: var(--mono); font-size: .88rem; text-align: center; margin-top: 2rem; opacity: .9; }
.reward { max-width: 680px; margin: 1rem auto; padding: 1rem 1.2rem; border: 1px solid var(--gold); border-radius: 12px; background: #e9c46a12; }
.journal { max-width: 760px; margin: 1rem auto 0; }
.journal li { margin: .5em 0; }

.vote { text-align: center; }
.vote > p { max-width: 680px; margin: 0 auto; opacity: .9; }
.offers { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 14px; max-width: 1040px; margin: 1.8rem auto 0; }
.offer { font-family: var(--dw-font-display); font-size: 1.3rem; color: var(--dw-fg); background: #0f1740; border: 1px solid var(--line); border-radius: 14px; padding: 1.1em .9em; cursor: pointer; transition: border-color .2s, transform .2s; }
.offer small { display: block; font-family: var(--dw-font-body); font-size: .92rem; opacity: .8; margin-top: .4em; }
.offer:hover, .offer:focus-visible { border-color: var(--dw-accent); transform: translateY(-2px); }

.roster { display: grid; justify-items: center; text-align: center; }
.roster > p { max-width: 560px; opacity: .9; }
.roster .dw-optin { text-align: left; width: 100%; }
.dw-optin button[type=submit] { font-family: var(--mono); }
.offer-note { margin: 0; color: var(--dw-accent); font-family: var(--mono); font-size: .88rem; }

.foot { padding: 30px 16px 6px; text-align: center; border-top: 1px solid var(--line); }
.more { font-family: var(--mono); font-size: .85rem; }
.glyph { background: none; border: 0; color: inherit; font-size: 1.1rem; cursor: pointer; opacity: .7; }
.glyph:hover, .glyph:focus-visible { opacity: 1; color: var(--dw-accent); }

@media (prefers-reduced-motion: reduce) { .rune { transition: none; } }