Improve documentation site layout #513

Job	Run time
build / lint-toml	8s
build / lint-python	12s
build / generate-license	2m 21s
build / lint-rust	23s
build / check-crates-patch	0s
build / Linux x86_64 (abi3)	4m 2s
build / Linux x86_64 (3.13t)	4m 3s
build / macOS arm64 (3.14t)	4m 17s
build / Windows x86_64 (abi3)	4m 13s
build / Windows x86_64 (3.13t)	4m 13s
build / Linux arm64 (3.13t)	3m 59s
build / Linux arm64 (3.14t)	3m 59s
build / macOS arm64 (abi3)	4m 16s
build / Windows x86_64 (3.14t)	4m 9s
build / Linux x86_64 (3.14t)	4m 2s
build / Linux arm64 (abi3)	3m 59s
build / macOS arm64 (3.13t)	4m 17s
build / macOS x86_64 (${{ matrix.python-tag }})	0s
build / Source distribution	0s
build / Build docs	1s
build / Merge build artifacts	1s
test	0s
	52m 35s

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