.alphabet-page-body { --bg: #dbe5e1; --panel: #edf3f0; --panel-strong: #f6f9f7; --ink: #112a2a; --muted: #48615e; --faint: #718682; --line: rgba(17,42,42,.2); --green: #608d2c; --orange: #a85f25; --shadow: rgba(17,42,42,.18); min-height: 100vh; overflow: hidden; background: var(--bg); }
.alphabet-page-shell { width: min(1540px, 100%); height: 100svh; display: flex; flex-direction: column; gap: clamp(12px, 2vh, 22px); margin: 0 auto; padding: clamp(16px, 3vh, 30px) clamp(18px, 3vw, 46px) clamp(12px, 2vh, 20px); }
.alphabet-page-header { display: grid; grid-template-columns: minmax(150px, .7fr) minmax(300px, 1.5fr) minmax(190px, .85fr); align-items: center; gap: 24px; }
.alphabet-back-link, .alphabet-page-footer a { color: var(--green); font: 700 12px "Cascadia Mono", "Courier New", monospace; letter-spacing: .08em; text-decoration: none; }
.alphabet-back-link { width: fit-content; padding: 9px 11px; border: 1px solid rgba(200,240,91,.35); }
.alphabet-back-link:hover, .alphabet-page-footer a:hover { background: rgba(200,240,91,.08); color: var(--ink); }
.alphabet-page-title .eyebrow { margin-bottom: 8px; }
.alphabet-page-title h1 { font-size: clamp(30px, 4.2vw, 54px); }
.alphabet-page-title > p:last-child { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
.alphabet-page-legend { justify-self: end; display: grid; gap: 8px; color: var(--muted); font: 700 10px "Cascadia Mono", "Courier New", monospace; letter-spacing: .06em; }
.alphabet-page-legend span { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.alphabet-page-legend__dot, .alphabet-page-legend__dash { display: inline-block; background: var(--orange); }
.alphabet-page-legend__dot { width: 9px; height: 9px; border-radius: 50%; }
.alphabet-page-legend__dash { width: 26px; height: 7px; }
.alphabet-page-board { flex: 1 1 auto; min-height: 0; padding: clamp(8px, 1.2vh, 14px); border: 1px solid var(--line); background: rgba(255,255,255,.28); box-shadow: 8px 8px 0 var(--shadow); }
.alphabet-page-grid { height: 100%; display: grid; grid-template-columns: repeat(9, minmax(0, 1fr)); grid-template-rows: repeat(5, minmax(0, 1fr)); gap: clamp(6px, .7vw, 11px); }
.alphabet-page-card { min-width: 0; min-height: 0; display: grid; grid-template-rows: minmax(0, 1fr); align-items: center; justify-items: center; gap: 3px; padding: clamp(4px, .7vw, 9px); border: 1px solid var(--line); background: rgba(239,246,242,.9); color: var(--ink); }
.alphabet-page-card:hover, .alphabet-page-card--playing { border-color: var(--green); background: rgba(200,240,91,.08); }
.alphabet-page-card__image { min-height: 0; width: min(100%, 13vh); aspect-ratio: 1; display: block; }
.alphabet-page-card__image img { display: block; width: 100%; height: 100%; object-fit: contain; }
.alphabet-page-card__operation { display: grid; justify-items: center; gap: 2px; color: var(--ink); font-family: "Cascadia Mono", "Courier New", monospace; }
.alphabet-page-card__operation strong { font-size: 14px; }
.alphabet-page-card__operation small { color: var(--green); font-size: 8px; letter-spacing: .04em; }
.alphabet-page-card__play { display: none; }
.alphabet-page-card--playing .alphabet-page-card__image img { transform: scale(1.07); filter: drop-shadow(0 0 9px rgba(200,240,91,.36)); }
.alphabet-page-footer { display: flex; align-items: center; justify-content: space-between; gap: 16px; color: var(--faint); font: 700 10px "Cascadia Mono", "Courier New", monospace; letter-spacing: .08em; }

@media (max-width: 1050px) {
  .alphabet-page-header { grid-template-columns: auto 1fr auto; gap: 16px; }
  .alphabet-page-shell { padding-left: 20px; padding-right: 20px; }
}

@media (max-width: 720px) {
  .alphabet-page-body { overflow: auto; }
  .alphabet-page-shell { height: auto; min-height: 100vh; }
  .alphabet-page-header { grid-template-columns: 1fr auto; }
  .alphabet-back-link { grid-column: 1 / -1; }
  .alphabet-page-title h1 { font-size: 32px; }
  .alphabet-page-legend { align-self: end; }
  .alphabet-page-grid { height: auto; grid-template-columns: repeat(4, minmax(0, 1fr)); grid-template-rows: none; }
  .alphabet-page-card { min-height: 126px; }
  .alphabet-page-card__image { width: min(100%, 82px); }
  .alphabet-page-footer { align-items: flex-start; flex-direction: column; }
}

@media (max-height: 700px) and (min-width: 721px) {
  .alphabet-page-shell { gap: 10px; padding-top: 12px; padding-bottom: 10px; }
  .alphabet-page-title .eyebrow { margin-bottom: 4px; }
  .alphabet-page-title > p:last-child { margin-top: 4px; }
  .alphabet-page-card__image { width: min(100%, 13vh); }
}