SanYeCao-blog/src/components/Header.astro

---
import Navigation from "./Navigation.astro";
import ThemeIcon from "./ThemeIcon.astro";
import { getLangFromUrl, getTranslations } from "@/i18n";

const lang = getLangFromUrl(Astro.url);
const t = getTranslations(lang);
---

<header class="site-header">
    <div class="theme-icon-wrap">
        <ThemeIcon />
    </div>

    <nav class="header-nav">
        <div class="banner">
            <a
                href={`/${lang}/`}
                data-astro-reload
                class="banner-link"
                aria-label="banner"
            >
                <span class="banner-logo"></span>
            </a>
        </div>
        <Navigation />
    </nav>
</header>

<style>
    .banner-link {
        display: inline-block;
    }

    .banner-logo {
        display: block;
        height: 55px; /* 按你的 banner 比例改 */
        background-color: #1f2328;

        -webkit-mask: url("/images/banner-black.svg") no-repeat left / contain;
        mask: url("/images/banner-black.svg") no-repeat left / contain;
    }

    :global(html.dark .banner-logo) {
        background-color: #e6e6e6;
    }

    .header-nav .banner a {
        color: inherit;
        text-decoration: none;
        display: block;
    }

    .site-header {
        position: relative;
        padding-top: 0.5rem;
    }

    .theme-icon-wrap {
        position: absolute;
        top: 0;
        right: 0;
        z-index: 2;
    }

    .header-nav {
        display: flex;
        flex-direction: column;
        gap: 1rem;
    }

    .header-nav .banner {
        margin: 0;
        font-style: italic;
        line-height: 1.1;

        /* 给右上角 ThemeIcon 留空间 */
        max-width: calc(100% - 7rem);

        /* 桌面正常，手机自动缩小 */
        font-size: clamp(1.6rem, 6vw, 2.5rem);
    }

    @media (max-width: 768px) {
        .site-header {
            padding-top: 0.25rem;
        }

        .header-nav h1 {
            max-width: calc(100% - 3.5rem);
            font-size: clamp(1.25rem, 7vw, 2rem);
        }
    }
</style>