:root {
  color-scheme: dark;
  font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
  background: #06101b;
  --ink: #eef8ff;
  --muted: #9db2bf;
  --line: rgb(154 211 231 / 35%);
  --panel: rgb(5 18 29 / 88%);
  --cyan: #78dcf2;
  --amber: #ffb85c;
}

* { box-sizing: border-box; }
html, body, #game-root { width: 100%; height: 100%; margin: 0; overflow: hidden; }
body { min-height: 100dvh; background: #06101b; touch-action: none; }
button, select, input { font: inherit; }
button { min-height: 44px; border: 1px solid var(--cyan); border-radius: 4px; padding: .7rem 1.25rem; color: #041018; background: var(--cyan); font-weight: 700; cursor: pointer; }
button:hover { filter: brightness(1.08); }
button:focus-visible, select:focus-visible, input:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; }
button.secondary { color: var(--ink); background: transparent; border-color: var(--line); }

#game-root { position: fixed; inset: 0; background: radial-gradient(circle at 50% 18%, #183953, #06101b 72%); }
#game-canvas, #ui-root, .ui-content { position: absolute; inset: 0; }
#game-canvas { display: block; width: 100%; height: 100%; }
#ui-root { color: var(--ink); pointer-events: none; }
#ui-root button, #ui-root select, #ui-root input { pointer-events: auto; }

.screen-panel { position: absolute; inset: 0; display: grid; place-items: safe center; overflow-y: auto; padding: max(1.25rem, env(safe-area-inset-top)) max(1.25rem, env(safe-area-inset-right)) max(1.25rem, env(safe-area-inset-bottom)) max(1.25rem, env(safe-area-inset-left)); background: linear-gradient(90deg, rgb(3 11 18 / 84%), rgb(3 11 18 / 38%), rgb(3 11 18 / 84%)); }
.panel-card { width: min(92vw, 720px); padding: clamp(1.5rem, 4vw, 3rem); border: 1px solid var(--line); background: var(--panel); box-shadow: 0 24px 70px rgb(0 0 0 / 46%); text-align: center; backdrop-filter: blur(12px); }
.panel-card h1 { margin: 0 0 1rem; font-size: clamp(2rem, 6vw, 4.5rem); letter-spacing: .12em; }
.panel-card p { color: var(--muted); line-height: 1.7; }
.panel-card > button { min-width: 11rem; margin: .45rem; }
.eyebrow { color: var(--cyan) !important; letter-spacing: .18em; text-transform: uppercase; }
.mission-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .8rem; margin: 1.5rem 0; }
.mission-card { display: grid; gap: .55rem; min-height: 12rem; align-content: center; color: var(--ink); background: rgb(14 40 56 / 88%); border-color: var(--line); }
.mission-card strong { color: var(--cyan); font-size: 1.25rem; }
.mission-card span, .mission-card small { color: var(--muted); font-weight: 400; }
.brief-list { display: inline-grid; gap: .7rem; padding-left: 1.4rem; text-align: left; color: var(--muted); }
.setting-row { display: flex; align-items: center; justify-content: space-between; gap: 2rem; padding: .8rem 0; border-bottom: 1px solid var(--line); }
.setting-row:last-of-type { margin-bottom: 1.25rem; }
.score-grade { color: var(--amber); font-size: clamp(5rem, 16vw, 10rem); font-weight: 900; line-height: 1; }
.error-panel { background: rgb(75 11 13 / 82%); }
.error-id { color: var(--amber) !important; font-family: Consolas, monospace; letter-spacing: .12em; }
.modal { background: rgb(2 8 13 / 72%); }
.status-notice { position: absolute; z-index: 30; right: max(1rem, env(safe-area-inset-right)); bottom: max(1rem, env(safe-area-inset-bottom)); padding: .6rem .9rem; border: 1px solid rgb(255 184 92 / 55%); background: rgb(38 24 7 / 92%); color: #ffe0b8; pointer-events: none; }

.flight-ui { position: absolute; inset: 0; text-shadow: 0 2px 6px #000; }
.pip { position: absolute; top: max(1rem, env(safe-area-inset-top)); width: clamp(170px, 24vw, 310px); aspect-ratio: 16 / 9; border: 2px solid var(--line); box-shadow: inset 0 0 0 1px rgb(0 0 0 / 55%), 0 10px 30px rgb(0 0 0 / 35%); }
.pip span { position: absolute; left: 0; bottom: 0; padding: .25rem .5rem; color: var(--cyan); background: rgb(2 12 19 / 75%); font-size: clamp(.65rem, 1.2vw, .82rem); letter-spacing: .12em; }
.pip-ship { left: max(1rem, env(safe-area-inset-left)); }
.pip-rocket { right: max(1rem, env(safe-area-inset-right)); }
.pause-button { position: absolute; top: calc(max(1rem, env(safe-area-inset-top)) + clamp(170px, 13.5vw, 174px) + .75rem); right: max(1rem, env(safe-area-inset-right)); min-width: 48px; padding: .5rem; color: var(--ink); background: var(--panel); }
.hud { display: flex; border: 1px solid var(--line); background: rgb(3 17 27 / 78%); backdrop-filter: blur(8px); }
.hud > .hud-metric { display: grid; gap: .2rem; padding: .55rem .8rem; color: var(--muted); font-size: clamp(.65rem, 1.1vw, .8rem); letter-spacing: .06em; }
.hud strong { color: var(--ink); font-size: clamp(.85rem, 1.5vw, 1.1rem); white-space: nowrap; }
.hud-left { position: absolute; left: max(1rem, env(safe-area-inset-left)); top: 28%; display: grid; width: min(24vw, 300px); }
.hud-right { position: absolute; right: max(1rem, env(safe-area-inset-right)); top: 28%; flex-direction: column; width: min(22vw, 260px); }
.vector-instrument { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: .15rem .45rem; min-width: 0; padding: .45rem .65rem; color: var(--muted); font-size: clamp(.65rem, 1.1vw, .8rem); letter-spacing: .06em; }
.vector-value { grid-column: 1; }
.vector-arrow { --magnitude: 0; position: relative; grid-column: 2; width: clamp(8px, calc(8px + var(--magnitude) * 48px), 56px); height: 2px; margin-left: .1rem; background: var(--cyan); color: var(--cyan); transform-origin: left center; }
.vector-arrow::after { content: ""; position: absolute; top: 50%; right: -1px; width: 0; height: 0; border: 4px solid transparent; border-left-color: currentColor; transform: translateY(-50%); }
.vector-arrow[data-direction="negative"] { transform: rotate(180deg); }
.vector-arrow[data-axis="vertical"][data-direction="positive"] { transform: rotate(-90deg); }
.vector-arrow[data-axis="vertical"][data-direction="negative"] { transform: rotate(90deg); }
.vector-arrow[data-direction="neutral"]::after { display: none; }
.flight-assistance { position: absolute; left: max(1rem, env(safe-area-inset-left)); top: auto; bottom: max(1rem, env(safe-area-inset-bottom)); display: grid; gap: .35rem; max-width: min(42vw, 28rem); padding: .55rem .75rem; transform: none; border-left: 3px solid var(--cyan); background: rgb(3 17 27 / 72%); color: var(--cyan); font-size: clamp(.68rem, 1.15vw, .86rem); }
.flight-assistance span { display: block; }
.flight-assistance [data-ui="speed-band"] { color: #ffe0b8; }
.flight-notice { position: absolute; left: 50%; top: max(.5rem, env(safe-area-inset-top)); z-index: 4; min-width: min(78vw, 28rem); padding: .75rem 1.25rem; transform: translateX(-50%); border: 1px solid rgb(120 220 242 / 65%); background: rgb(3 17 27 / 88%); color: var(--ink); font-size: clamp(1rem, 2.2vw, 1.35rem); font-weight: 700; letter-spacing: .08em; text-align: center; }
.flight-notice[data-kind="critical"] { border-color: rgb(255 100 100 / 75%); color: #ffd1d1; }
.attitude-indicator { --attitude-color: var(--cyan); display: grid; gap: .2rem; padding: .55rem .8rem; color: var(--attitude-color); font-size: clamp(.65rem, 1.1vw, .8rem); letter-spacing: .06em; }
.attitude-indicator svg { width: 100%; max-width: 150px; height: auto; }
.attitude-horizon, .attitude-rocket path { fill: none; stroke: var(--attitude-color); stroke-width: 3; }
.attitude-rocket { transform-origin: 60px 54px; }
.attitude-indicator[data-status="nominal"] { --attitude-color: var(--cyan); }
.attitude-indicator[data-status="caution"] { --attitude-color: var(--amber); }
.attitude-indicator[data-status="danger"] { --attitude-color: #ff6464; }
.desktop-keys { position: absolute; left: 50%; bottom: max(1rem, env(safe-area-inset-bottom)); transform: translateX(-50%); padding: .55rem 1rem; color: var(--muted); background: rgb(3 17 27 / 72%); white-space: nowrap; }
.touch-controls { display: none; }

@media (hover: none), (pointer: coarse) {
  .desktop-keys { display: none; }
  #ui-root[data-screen="flight"] .touch-controls, #ui-root[data-screen="pause"] .touch-controls { position: absolute; z-index: 5; inset: auto max(1rem, env(safe-area-inset-right)) max(1rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left)); display: flex; align-items: end; justify-content: space-between; }
  .attitude-controls, .thrust-controls { display: flex; gap: .75rem; }
  .touch-controls button { min-height: 58px; color: var(--ink); background: rgb(4 24 36 / 88%); border-color: var(--line); user-select: none; -webkit-user-select: none; -webkit-touch-callout: none; touch-action: none; }
  .touch-controls .thrust { color: #241100; background: var(--amber); }
}

@media (max-width: 760px) {
  .mission-grid { grid-template-columns: 1fr; }
  .mission-card { min-height: 6rem; }
  .hud-left { top: calc(max(1rem, env(safe-area-inset-top)) + clamp(96px, 13.5vw, 174px) + .55rem); width: min(42vw, 260px); }
  .hud-right { top: auto; bottom: 5rem; width: min(36vw, 220px); }
  .flight-assistance { top: auto; bottom: 5rem; max-width: 48vw; transform: none; }
  .vector-arrow { width: clamp(8px, calc(8px + var(--magnitude) * 30px), 38px); }
}

@media (max-height: 480px) and (orientation: landscape) and (hover: none),
       (max-height: 480px) and (orientation: landscape) and (pointer: coarse) {
  .hud-left { width: min(28vw, 260px); }
  .hud-left > .hud-metric { gap: .1rem; padding: .3rem .5rem; font-size: .6rem; }
  .hud-left > .vector-instrument { padding: .25rem .35rem; }
  .hud-left strong { font-size: .72rem; }
  .vector-instrument { font-size: .6rem; gap: .1rem .25rem; padding: .25rem .35rem; letter-spacing: .03em; }
  .vector-arrow { width: clamp(6px, calc(6px + var(--magnitude) * 18px), 24px); }
}

@media (max-height: 480px) and (orientation: landscape) {
  .screen-panel { padding: .5rem max(.75rem, env(safe-area-inset-right)) .5rem max(.75rem, env(safe-area-inset-left)); }
  .panel-card { padding: .75rem; }
  .panel-card h1 { margin-bottom: .4rem; font-size: clamp(1.3rem, 6vh, 2rem); }
  .panel-card p { margin: .35rem 0; line-height: 1.35; }
  .panel-card > button { min-height: 40px; margin: .25rem; padding: .35rem .8rem; }
  .mission-grid { gap: .5rem; margin: .5rem 0; }
  .mission-card { min-height: 6rem; gap: .2rem; padding: .35rem .6rem; }
  .brief-list { gap: .25rem; margin: .4rem 0; }
  .setting-row { gap: 1rem; padding: .35rem 0; }
  .setting-row:last-of-type { margin-bottom: .5rem; }
  .flight-notice { width: min(38vw, 20rem); min-width: 0; padding: .35rem .7rem; font-size: .75rem; line-height: 1.1; }
  .hud-left { grid-template-columns: repeat(2, minmax(0, 1fr)); width: calc(32vw - max(1rem, env(safe-area-inset-left)) - .5rem); }
  .flight-assistance { top: auto; bottom: 5rem; width: calc(32vw - max(1rem, env(safe-area-inset-left)) - .5rem); max-width: calc(32vw - max(1rem, env(safe-area-inset-left)) - .5rem); padding: .3rem .4rem; transform: none; font-size: .6rem; line-height: 1.15; }
}

@media (orientation: portrait) {
  .pip { top: max(.5rem, env(safe-area-inset-top)); width: min(42vw, 220px); }
  .hud-left { top: 22%; width: calc(22vw - 1.5rem); overflow: hidden; }
  .hud-right { top: 22%; bottom: auto; width: calc(22vw - 1.5rem); overflow: hidden; }
  .hud-left > .hud-metric, .hud-right > .hud-metric, .attitude-indicator { padding: .3rem .2rem; font-size: clamp(.48rem, 2.15vw, .62rem); letter-spacing: 0; }
  .hud-left strong, .hud-right strong { font-size: clamp(.5rem, 2.25vw, .65rem); white-space: normal; overflow-wrap: anywhere; }
  .hud-left .vector-instrument { display: block; padding: .3rem .2rem; font-size: clamp(.48rem, 2.15vw, .62rem); letter-spacing: 0; }
  .hud-left .vector-label { display: none; }
  .hud-left .vector-value { display: block; white-space: normal; overflow-wrap: anywhere; }
  .hud-left .vector-arrow { display: block; max-width: 70%; margin: .3rem auto 0; }
  .attitude-indicator svg { min-width: 48px; transform: translateX(calc((100% - 48px) / 2)); }
  .flight-notice { top: calc(23.625vw + 1rem); width: min(88vw, 20rem); min-width: 0; padding: .25rem .6rem; font-size: clamp(.72rem, 3.2vw, .85rem); line-height: 1.2; white-space: nowrap; }
  .flight-assistance { bottom: 5.125rem; width: calc(100% - 2rem); max-width: none; max-height: calc(20vh - 5.625rem); overflow-y: auto; padding: .3rem .45rem; font-size: clamp(.58rem, 2.6vw, .72rem); line-height: 1.2; }
}