A top-down asteroid shooter

Create a top-down asteroid shooter: a complete browser game that people want to play again and again.

What makes it great:
- It is fun within the first five seconds: instant controls, a clear goal, and a difficulty that starts gentle and rises steadily, so a new player survives their first 20 seconds.
- It feels good to play: responsive controls, smooth motion, and clear feedback for every point, hit and miss (a flash, a small shake, particles, a pop of the score).
- It has its own style: a coherent colour palette and shapes drawn in code, not a grey prototype. Sound is optional: make it with the Web Audio API, start it only after the first input, and keep it quiet.

How it is played:
- Desktop: the arrow keys (WASD too) and Space. Phone: tap, or swipe and drag where it suits the game. Use Pointer Events so mouse and touch both work, and set touch-action: none on the play area.
- Attract mode: on the title screen, before any input, the game plays itself with a simple autopilot that plays well (it survives, scores points and shows off the game's best moments), like an arcade cabinet. The title, the goal in one line and the controls stay readable on top.
- The first Space, arrow key or tap hands control to the player and starts a real run from the beginning. After game over, Space or a tap starts a new run straight away (no reload, no extra screens), and with no input for about 8 seconds it returns to attract mode.
- The score is visible during play. Game over shows the score and the best score of this visit (keep it in memory, or in localStorage inside a try/catch).
- P or Escape pauses on a desktop.
- The play area adapts to the window's shape, landscape desktop and portrait phone, without cutting off anything important. Text stays readable on a phone.

Fixed rules (so every model is compared on the same terms):
- Exactly one file, index.html, in the current directory. Create no other files.
- Plain HTML, CSS and JavaScript. You may use three.js 0.170.0 from https://cdn.jsdelivr.net/npm/three@0.170.0/ (via an import map) if it helps. No other libraries, images, 3D models, fonts or network requests: build everything yourself in code (canvas, SVG, CSS or WebGL).
- It fills the browser window and works on a phone and on a desktop, with no page scrollbars.
- Animate with requestAnimationFrame and its timestamp so speed does not depend on the frame rate.

It must work in an ordinary browser on any graphics card. You cannot open a browser to look at it, so build it carefully:
- Every frame is fully drawn: no black, blank or flickering frames or patches. Keep any shader maths free of NaN and infinity (no division by a value that can reach zero, no pow() of a negative number, no normalize() of a zero-length vector), and clamp colours to a safe range before bloom or other post-processing.
- No errors in the browser console: if you use three.js, map "three" and "three/addons/" in the import map, and import everything you use.
- It runs smoothly on an ordinary laptop or phone: keep the pixel ratio at 2 or below, and avoid creating new objects every frame.
- It adapts when the window is resized or the phone is rotated.
- Do not hide errors: never wrap the main loop or whole functions in a try/catch that silently swallows them; fix the cause instead (a try/catch around storage or audio is fine).
- Update the game with a clamped time step (at most about 1/30 s per update), so a slow or missing frame never makes things jump through walls or kills the player.
- A restart fully resets the game: no leftover enemies, timers or listeners piling up, and no errors after many restarts.

Before you finish, read your file once from top to bottom and make sure that:
- With no input at all, attract mode plays well for at least 15 seconds without dying straight away or freezing.
- Space or a tap on the title screen starts a real run, and the arrow keys and taps visibly control the game.
- After game over, Space or a tap starts a new run.
- It fits a 390×844 phone window and a 1280×720 desktop window.
- Nothing can throw an error in the browser console.

The battle video records about 15 seconds right after the page opens, with no input: attract mode is what viewers see first.

Everything else is your choice: the mechanics, the theme, the art style, colour and effects. Make it as fun and polished to play as you can. Do not ask questions; make reasonable choices.