AMP 浏览器支持吗？
AMP browser support?
查看 AMP 规范，鉴于自定义样式元素依赖 CSS 变量，这意味着当前的浏览器支持范围很窄。参见：Can I use reference
我猜有一个 'graceful fallback' 非自定义样式，因为不理解 CSS 变量的浏览器将忽略 CSS.
是否有适用于 AMP 的浏览器 compatibility/support 矩阵？
浏览器支持
In general we support the 2 latest versions of major browsers like Chrome, Firefox, Edge, Safari and Opera. We support desktop, phone, tablet and the web view version of these respective browsers.
Beyond that the core AMP library and builtin elements should aim for very wide browser support and we accept fixes for all browsers with market share greater than 1 percent.
In particular, we try to maintain "it might not be perfect but isn't broken"-support for the Android 4.0 system browser and Chrome 28+ on phones.
来自 amp faq
但是.. CSS变量？
使用 CSS 自定义属性（又名 CSS 变量）是 polyfilled:
AMP HTML components that are more complex and nested … may be styled with an explicitly defined set of CSS Custom Properties. These are propagated to any children elements that are dynamically created by the runtime, to achieve the desired style.
除了基于 Chromium 的 Paul Irish , there is now a dedicated desktop web browser for AMP pages: AMP Browser。
查看 AMP 规范，鉴于自定义样式元素依赖 CSS 变量，这意味着当前的浏览器支持范围很窄。参见：Can I use reference
我猜有一个 'graceful fallback' 非自定义样式，因为不理解 CSS 变量的浏览器将忽略 CSS.
是否有适用于 AMP 的浏览器 compatibility/support 矩阵？
浏览器支持
In general we support the 2 latest versions of major browsers like Chrome, Firefox, Edge, Safari and Opera. We support desktop, phone, tablet and the web view version of these respective browsers.
Beyond that the core AMP library and builtin elements should aim for very wide browser support and we accept fixes for all browsers with market share greater than 1 percent.
In particular, we try to maintain "it might not be perfect but isn't broken"-support for the Android 4.0 system browser and Chrome 28+ on phones.
来自 amp faq
但是.. CSS变量？
使用 CSS 自定义属性（又名 CSS 变量）是 polyfilled:
AMP HTML components that are more complex and nested … may be styled with an explicitly defined set of CSS Custom Properties. These are propagated to any children elements that are dynamically created by the runtime, to achieve the desired style.
除了基于 Chromium 的 Paul Irish