:root{--bg:#0d141a;--pane:#131e26;--pane2:#17252c;--line:#2a3c46;--text:#e8efe9;--muted:#9aabb0;--accent:#a9d2b7;--amber:#e0b76f;--red:#f08472;--cyan:#7ec7cf}*{box-sizing:border-box}html,body{margin:0;min-height:100%;font-family:-apple-system,BlinkMacSystemFont,"Hiragino Kaku Gothic ProN","Yu Gothic",Meiryo,sans-serif;background:var(--bg);color:var(--text);font-size:14px}button,select{font:inherit}button{cursor:pointer}button:disabled{opacity:.42;cursor:not-allowed}.topbar{height:82px;display:flex;align-items:center;gap:30px;padding:0 30px;border-bottom:1px solid var(--line);background:#101a21}.brand{display:flex;align-items:center;gap:13px;min-width:247px}.brand-mark{font-size:35px;color:var(--accent);line-height:1}.brand strong{font-size:14px;letter-spacing:.12em;display:block}.brand 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#6d918d;border-radius:2px;background:transparent;color:#c5e3d2;white-space:nowrap;font-weight:bold;font-size:12px}.part-row button.equipped{background:#25463a;color:#a9d2b7;border-color:#4b7e66;cursor:default}.part-row button:hover:not(:disabled),.facility-row button:hover:not(:disabled),.research-row button:hover:not(:disabled){background:#2e4f44}.two-col{display:grid;grid-template-columns:1fr 1fr;gap:25px}.facility-row,.research-row{display:flex;justify-content:space-between;align-items:center;gap:16px;border-bottom:1px solid #31434d;padding:15px 0}.facility-row strong,.research-row strong{display:block}.facility-row small,.research-row small{display:block;margin-top:6px;font-size:11px;color:#97aeb2;line-height:1.55}.home-map{border:1px solid #3b5257;padding:16px;background:#17262d}.home-map button{margin-top:12px}.home-map p{margin-bottom:0}.research-list{border-top:1px solid #31434d}.tab-story{margin-top:24px;border-top:1px solid #345053;padding-top:20px}.tab-story 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16px}.top-metrics{gap:16px}.brand{min-width:220px}}@media(max-width:880px){.page{display:flex;flex-direction:column}.control-zone{border-left:0;border-top:1px solid var(--line)}.topbar{height:auto;min-height:76px;flex-wrap:wrap;justify-content:space-between;padding:12px 16px}.top-metrics{order:3;width:100%;justify-content:space-between;flex:auto;border-top:1px solid #34454b;padding-top:11px}.brand{min-width:auto}.battle-zone{padding:15px 12px}.control-zone{padding:20px 17px}.commands{grid-template-columns:1fr 1fr}.quick-help{margin-top:14px}.stat-rows{grid-template-columns:repeat(4,1fr)}.stat-rows>div{display:block}.stat-rows b{display:block;margin-top:5px}.world-label{font-size:9px;padding:3px 6px}.field-tip{font-size:10px;bottom:8px;left:8px;padding:6px 8px}.hangar-head,.hangar-body{padding:16px}.hangar-tabs{padding:0 16px}.hangar{max-height:95dvh}.parts-grid{gap:10px}}@media(max-width:540px){.top-metrics{gap:4px}.top-metrics span{font-size:10px}.top-metrics 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/* Progressive feature discovery: compact, never obscures the battlefield. */
.unlock-track{margin:-6px 0 17px;padding:11px 12px 10px;border:1px solid #365047;background:#193028}
.unlock-track-top{display:flex;gap:9px;justify-content:space-between;align-items:baseline;font-size:11px}
.unlock-track-top strong{color:#c6e4d2;font-size:12px;font-weight:700}
.unlock-track-top span{white-space:nowrap;color:#a8c8ad;font-variant-numeric:tabular-nums}
.unlock-progress{height:3px;background:#3a5047;margin-top:10px;overflow:hidden}
.unlock-progress span{display:block;height:100%;width:0;background:#b5dfb7;transition:width .3s ease}
.unlock-notice{border:1px solid #81b28e;background:#1d362c;color:#e8f5e7;display:flex;align-items:center;gap:12px;padding:11px 13px;margin-bottom:13px}
.unlock-notice[hidden]{display:none}
.unlock-notice div{display:flex;flex-direction:column;flex:1;min-width:0;gap:4px}
.unlock-notice strong{font-size:13px}
.unlock-notice span{font-size:11px;color:#b9dac3;line-height:1.5}
.unlock-notice button{background:#b4d9b6;border:1px solid #b4d9b6;color:#11261a;border-radius:3px;padding:7px 11px;font-weight:bold;font-size:11px;white-space:nowrap}
.unlock-notice #unlock-dismiss{background:transparent;color:#d6eed8;border-color:transparent;font-size:18px;padding:2px 5px}
.locked-feature{opacity:.78;border-style:dashed}
.locked-feature p,.locked-message{color:#abbdb9;font-size:12px;line-height:1.65;margin:10px 0}
.locked-message{border-left:2px solid #607c67;padding-left:11px}
.reset-progress{margin-top:20px;border-top:1px solid #32434b;padding-top:15px;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.reset-progress button{background:transparent;border:1px solid #62737a;color:#adc1c1;padding:8px 12px;font-size:11px;border-radius:3px;cursor:pointer}
.reset-progress button.armed{border-color:#dc8b76;color:#f4aaa0}
.reset-progress small{color:#a8b8ba;line-height:1.5}
@media(max-width:540px){.unlock-notice{padding:8px;gap:7px}.unlock-notice button{padding:7px 8px}.unlock-track{margin:0 0 17px}}
/* Desktop notification must be visible without scrolling the battlefield. */
@media(min-width:881px){
  .battle-zone{position:relative}
  .battle-zone .unlock-notice{
    position:absolute;z-index:4;right:43px;top:80px;
    width:min(430px,calc(100% - 70px));
    box-shadow:0 10px 28px #07140dcc;
  }
}

/* Explicit first-command lesson and expandable command program. */
.tutorial{border:1px solid #b08f53;background:#332d20;padding:13px 14px;margin:0 0 19px;color:#eed7a3}
.tutorial[hidden]{display:none}
.tutorial strong{font-size:12px;letter-spacing:.03em}
.tutorial p{font-size:12px;color:#d8c7a6;line-height:1.65;margin:7px 0 0}
.commands{grid-template-columns:1fr}
@media(min-width:630px) and (max-width:880px){.commands{grid-template-columns:repeat(2,minmax(0,1fr))}}

.tactic-hint{font-size:11px;line-height:1.65;color:#aadbd8;background:#12323a;border-left:3px solid #61afb4;padding:10px 11px;margin:13px 0 2px}
.tactic-hint[hidden]{display:none}

/* Live simulation-speed controls: 40px touch targets, readable in landscape. */
.battle-head{flex-wrap:wrap}
.speed-control{display:flex;align-items:center;gap:4px;white-space:nowrap}
.speed-control>span{color:#9aabb0;font-size:11px;margin-right:5px}
.speed-control button{min-width:40px;min-height:40px;border:1px solid #405960;
  background:#172930;color:#d5e3dd;border-radius:4px;font-size:13px;font-weight:700;
  padding:7px 9px;touch-action:manipulation}
.speed-control button.on{border-color:#aad5bb;background:#b1dcc2;color:#102d28}
.speed-control button:focus-visible{outline:2px solid #e4c47f;outline-offset:2px}
@media(max-width:540px){.speed-control{width:100%;justify-content:flex-end}}