:root {
  color-scheme: dark;
  font-family: "Microsoft YaHei UI", "Courier New", monospace;
  --ink: #eff8ff;
  --muted: #8fa2b8;
  --panel: rgba(9, 13, 24, 0.96);
  --line: #344961;
  --cyan: #81f4ff;
  --green: #70f2a1;
  --yellow: #ffe173;
  --red: #f2636d;
  --safe-top: max(16px, env(safe-area-inset-top));
  --safe-right: max(16px, env(safe-area-inset-right));
  --safe-bottom: max(16px, env(safe-area-inset-bottom));
  --safe-left: max(16px, env(safe-area-inset-left));
  --ui-duration: 220ms;
  --ui-shift: 18px;
  --ui-scale: 0.97;
  --card-stagger: 55ms;
  --card-duration: 300ms;
  --xp-pulse-duration: 280ms;
  --selected-scale: 0.97;
  --selected-glow: 22px;
  --xp-pulse-scale: 1.7;
  --xp-pulse-brightness: 1.65;
}

* { box-sizing: border-box; }
html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; background: #090d18; }
body { color: var(--ink); user-select: none; -webkit-tap-highlight-color: transparent; overscroll-behavior: none; }
button, output { font: inherit; }
button { color: inherit; }
[hidden] { display: none !important; }

.game-shell { position: relative; width: 100%; height: 100%; min-height: 320px; overflow: hidden; isolation: isolate; background: #090d18; }
#game-canvas { position: absolute; inset: 0; display: block; width: 100%; height: 100%; touch-action: none; cursor: crosshair; }
.scanlines { position: absolute; inset: 0; pointer-events: none; opacity: 0.18; background: repeating-linear-gradient(0deg, transparent 0 3px, rgba(125, 207, 220, 0.08) 4px); }

.hud { position: absolute; top: var(--safe-top); right: var(--safe-right); left: calc(var(--safe-left) + 56px); z-index: 5; width: min(440px, calc(100% - var(--safe-left) - var(--safe-right) - 56px)); pointer-events: none; text-shadow: 1px 2px 0 #050812; }
.hud-topline, .hud-bottomline { display: flex; align-items: center; justify-content: space-between; gap: 16px; font-family: "Courier New", monospace; font-size: 12px; font-weight: 800; }
.hud-topline { margin-bottom: 7px; color: var(--cyan); }
.hud-topline output { color: var(--ink); font-size: 18px; }
.hud-bottomline { margin-top: 8px; color: var(--muted); }
.synergy-value { margin-top: 5px; color: #ffc76b; font: 700 10px "Courier New", monospace; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.status-label { letter-spacing: 0; }
.meter { display: grid; grid-template-columns: 64px 1fr; align-items: center; gap: 8px; margin-top: 5px; font-family: "Courier New", monospace; font-size: 11px; font-weight: 800; }
.meter > div { height: 9px; overflow: hidden; border: 1px solid rgba(225, 242, 255, 0.38); background: rgba(0, 0, 0, 0.56); }
.meter i { display: block; width: 100%; height: 100%; transition: width 80ms linear; }
/* 任务进度条:底部刻度标出阶段 Boss 时间点,无尽模式转为紫色 */
.mission-bar { position: relative; height: 5px; margin-bottom: 4px; overflow: hidden; border: 1px solid rgba(225, 242, 255, 0.28); background: rgba(0, 0, 0, 0.5); }
.mission-bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--cyan), var(--yellow)); transition: width 160ms linear; }
.mission-bar b { position: absolute; inset: 0; display: block; }
.mission-bar b i { position: absolute; top: 0; width: 2px; height: 100%; background: rgba(255, 225, 115, 0.85); transform: translateX(-1px); }
.mission-bar.is-endless i { background: linear-gradient(90deg, #c26bff, var(--red)); }
.boss-banner { position: absolute; top: 34%; left: 50%; z-index: 9; padding: 8px 20px; border: 1px solid rgba(242, 99, 109, 0.6); background: rgba(9, 13, 24, 0.82); color: var(--red); font: 900 clamp(15px, 3.6vw, 24px)/1 "Courier New", monospace; letter-spacing: 4px; white-space: nowrap; opacity: 0; transform: translate(-50%, -50%) scale(0.86); pointer-events: none; transition: opacity 260ms ease, transform 260ms cubic-bezier(.22, 1, .36, 1); }
.boss-banner.is-visible { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.boss-banner.is-final { border-color: var(--yellow); color: var(--yellow); box-shadow: 0 0 30px rgba(255, 225, 115, 0.35); }
.eyebrow.success { color: var(--green); }
.victory-copy { margin: 0; color: var(--muted); font-size: 13px; }
.victory-actions { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center; }
@media (max-width: 480px) { .victory-actions { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .boss-banner, .mission-bar i { transition: none; } }
.health-meter i { background: var(--red); box-shadow: 0 0 9px rgba(242, 99, 109, 0.55); }
.xp-meter i { background: var(--green); box-shadow: 0 0 9px rgba(112, 242, 161, 0.48); }

.icon-button { position: absolute; z-index: 8; top: var(--safe-top); right: var(--safe-right); width: 44px; height: 44px; border: 1px solid rgba(225, 242, 255, 0.28); border-radius: 4px; background: rgba(9, 13, 24, 0.74); font-size: 12px; font-weight: 900; cursor: pointer; }
.icon-button:hover { border-color: var(--cyan); color: var(--cyan); }
.meta-button, .sound-button { position: absolute; z-index: 8; top: var(--safe-top); min-height: 44px; padding: 0 9px; border: 1px solid rgba(225,242,255,.26); border-radius: 4px; background: rgba(9,13,24,.72); color: var(--muted); font: 700 10px "Courier New", monospace; cursor: pointer; }
.meta-button { right: calc(var(--safe-right) + 54px); }
.sound-button { right: calc(var(--safe-right) + 106px); }
.icon-button:focus-visible, .command-button:focus-visible { outline: 3px solid var(--yellow); outline-offset: 3px; }

.xp-meter.is-pulsing > div { animation: xp-pulse var(--xp-pulse-duration) ease-out; }
.overlay { position: absolute; inset: 0; z-index: 20; display: grid; place-items: center; padding: max(28px, var(--safe-top)) var(--safe-right) max(28px, var(--safe-bottom)) var(--safe-left); overflow: auto; background: rgba(3, 6, 13, 0.78); opacity: 0; visibility: hidden; pointer-events: none; backdrop-filter: blur(0); transition: opacity var(--ui-duration) ease, backdrop-filter var(--ui-duration) ease, visibility 0s linear var(--ui-duration); }
.overlay.is-visible { opacity: 1; visibility: visible; pointer-events: auto; backdrop-filter: blur(4px); transition-delay: 0s; }
.overlay > * { transform: translateY(var(--ui-shift)) scale(var(--ui-scale)); opacity: 0; transition: transform var(--ui-duration) cubic-bezier(.22, 1, .36, 1), opacity var(--ui-duration) ease; }
.overlay.is-visible > * { transform: translateY(0) scale(1); opacity: 1; }
.upgrade-panel, .result-panel, .pause-panel { width: min(620px, 100%); }
.eyebrow { margin: 0 0 8px; color: var(--cyan); font-family: "Courier New", monospace; font-size: 12px; font-weight: 900; }
.eyebrow.danger { color: var(--red); }
.overlay h1 { margin: 0; font-size: clamp(30px, 7vw, 52px); line-height: 1; letter-spacing: 0; }
.title-overlay { background: radial-gradient(circle at 70% 28%, rgba(42,95,118,.32), transparent 34%), linear-gradient(120deg, rgba(5,8,16,.98), rgba(9,18,31,.9)); }
.title-card { width: min(520px, 100%); }
.title-card h1 { font-size: clamp(52px, 12vw, 96px); letter-spacing: -.08em; }
.title-card h1 strong { color: var(--cyan); }
.title-card > p:not(.eyebrow) { max-width: 420px; color: var(--muted); line-height: 1.7; }
.title-record { margin: 22px 0 10px; color: #ffc76b; font: 700 11px/1.8 "Courier New", monospace; }
.secondary-button { width: 100%; min-height: 44px; margin-top: 8px; border: 1px solid var(--line); border-radius: 4px; background: rgba(15,25,42,.82); color: var(--ink); font-weight: 800; cursor: pointer; }
.upgrade-subtitle { margin: 12px 0 22px; color: var(--muted); font-size: 14px; }
/* 共享选项卡的配色:沿用 shooter 的冷蓝科技感 */
#upgrade-choices {
  --draft-bg: #101a2c;
  --draft-bg-lit: #16233a;
  --draft-line: var(--line);
  --draft-ink: var(--ink);
  --draft-muted: var(--muted);
  --draft-accent: var(--cyan);
  --draft-shadow: rgba(0, 0, 0, .5);
}

.result-panel, .pause-panel { max-width: 450px; padding: 28px; border-left: 3px solid var(--red); background: var(--panel); box-shadow: 12px 14px 0 rgba(0, 0, 0, 0.38); }
.result-panel.victory-panel { border-left-color: var(--green); }
/* 只给读屏用的播报节点:视觉上不可见但不能 display:none,否则不会被朗读 */
.visually-hidden { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip-path: inset(50%); white-space: nowrap; border: 0; }
.settings-note { grid-column: 1 / -1; margin: -6px 0 0; color: var(--yellow); font-size: 11px; font-weight: 700; }
.settings-note:empty { display: none; }
.pause-actions { display: grid; gap: 10px; }
.synergy-list { display: grid; gap: 6px; margin-bottom: 18px; }
.synergy-row { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 4px 12px; margin: 0; padding: 9px 11px; border: 1px solid var(--line); background: #0f1828; }
.synergy-row strong { color: var(--yellow); font-size: 12px; }
.synergy-row small { color: var(--muted); font-size: 10px; }
.pause-panel { border-left-color: var(--cyan); }
.result-panel dl { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 26px 0; background: var(--line); }
.result-panel dl div { padding: 14px 10px; background: #0f1828; }
.result-panel dt { color: var(--muted); font-size: 11px; }
.result-panel dd { margin: 7px 0 0; font: 900 22px/1 "Courier New", monospace; }
.command-button { width: 100%; min-height: 48px; margin-top: 24px; border: 1px solid var(--cyan); border-radius: 4px; background: var(--cyan); color: #061018; font-weight: 900; cursor: pointer; }
.command-button:hover { background: #c8fbff; }
.result-reward { margin: -12px 0 0; color: var(--muted); text-align: center; }
.result-reward strong { color: #ffc76b; }
.settings-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 24px 0 0; }
.settings-grid label { display: grid; gap: 5px; color: var(--muted); font-size: 11px; }
.settings-grid select, .settings-grid input[type="range"] { width: 100%; min-height: 44px; border: 1px solid var(--line); border-radius: 3px; background: #0c1422; color: var(--ink); }
.settings-grid .check-label { display: flex; align-items: center; gap: 8px; }
.meta-card h2 { margin: 24px 0 0; font-size: 16px; }
.best-record { margin-top: 18px; font: 700 11px "Courier New", monospace; }

.aim-reticle { position: absolute; z-index: 4; width: 32px; height: 32px; margin: -16px; opacity: 0; pointer-events: none; border: 1px solid rgba(255, 225, 115, 0.82); border-radius: 50%; transition: opacity 120ms; }
.aim-reticle::before, .aim-reticle::after { content: ""; position: absolute; background: var(--yellow); }
.aim-reticle::before { left: 50%; top: -5px; width: 1px; height: 40px; }
.aim-reticle::after { top: 50%; left: -5px; width: 40px; height: 1px; }
.aim-reticle.active { opacity: 1; }
.move-stick { position: absolute; z-index: 4; display: none; width: 104px; height: 104px; margin: -52px; pointer-events: none; border: 1px solid rgba(129, 244, 255, 0.35); border-radius: 50%; background: rgba(8, 22, 34, 0.38); }
.move-stick i { position: absolute; left: 50%; top: 50%; width: 32px; height: 32px; margin: -16px; border: 1px solid var(--cyan); border-radius: 50%; background: rgba(129, 244, 255, 0.3); }
.move-stick.active { display: block; }
.boss-wrap { position: absolute; z-index: 6; top: max(16px, env(safe-area-inset-top)); left: 50%; width: min(520px, 48vw); transform: translateX(-50%); pointer-events: none; text-align: center; }
.boss-wrap strong { display: block; margin-bottom: 4px; color: #ff7590; font: 900 11px "Courier New", monospace; letter-spacing: .08em; }
.boss-wrap > div { height: 9px; overflow: hidden; border: 1px solid rgba(255,117,144,.7); background: rgba(0,0,0,.6); }
.boss-wrap i { display: block; width: 100%; height: 100%; background: linear-gradient(90deg, #ff426d, #ffc76b); }
.meta-card { width: min(620px, 100%); padding: 28px; border-left: 3px solid #ffc76b; background: var(--panel); box-shadow: 12px 14px 0 rgba(0,0,0,.38); }
.meta-card > p:not(.eyebrow) { color: var(--muted); }
.meta-card > p strong { color: #ffc76b; }
.meta-upgrades { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; margin-top: 20px; }
.meta-upgrade { display: flex; align-items: center; justify-content: space-between; gap: 10px; min-height: 62px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 4px; background: #101a2a; text-align: left; cursor: pointer; }
.meta-upgrade:disabled { opacity: .45; cursor: not-allowed; }
.meta-upgrade strong, .meta-upgrade small { display: block; }
.meta-upgrade small { margin-top: 4px; color: var(--muted); font-size: 10px; }
.meta-upgrade > b { color: #ffc76b; font-size: 11px; white-space: nowrap; }

@keyframes upgrade-card-in {
  from { opacity: 0; transform: translateY(var(--ui-shift)) scale(var(--ui-scale)); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes xp-pulse {
  0% { transform: scaleY(1); filter: brightness(1); }
  45% { transform: scaleY(var(--xp-pulse-scale)); filter: brightness(var(--xp-pulse-brightness)); box-shadow: 0 0 16px rgba(112, 242, 161, .8); }
  100% { transform: scaleY(1); filter: brightness(1); }
}
@media (max-width: 700px), (pointer: coarse) { .meta-button, .sound-button { top: auto; right: var(--safe-right); } .meta-button { bottom: var(--safe-bottom); } .sound-button { bottom: calc(var(--safe-bottom) + 40px); } .boss-wrap { width: 58vw; } .meta-upgrades { grid-template-columns: 1fr; } }

@media (max-width: 700px), (pointer: coarse) {
  .hud { right: 66px; width: auto; }
  .upgrade-panel { width: min(390px, 100%); }
  #upgrade-choices { grid-template-columns: 1fr; }
  .result-panel dl { grid-template-columns: 1fr; }
  .result-panel dl div { display: flex; justify-content: space-between; align-items: center; }
  .result-panel dd { margin: 0; }
}

@media (max-height: 480px) {
  #upgrade-choices { grid-template-columns: repeat(3, 1fr); }
  .overlay h1 { font-size: 30px; }
  .upgrade-subtitle { margin: 6px 0 10px; }
}