Use SVN-specific login context

assets/css/software.css

@@ -612,6 +612,23 @@ main,
   border-radius: 8px;
 }
 
+.login-context-svn {
+  --blue: #6a5cff;
+  --blue-dark: #5545ea;
+  --blue-soft: #f0f1ff;
+}
+
+.login-context-svn .login-panel {
+  background:
+    linear-gradient(135deg, rgba(240, 241, 255, 0.92), rgba(255, 255, 255, 0.9)),
+    #fff;
+  border-color: rgba(106, 92, 255, 0.22);
+}
+
+.login-context-svn .login-form {
+  border-color: rgba(106, 92, 255, 0.14);
+}
+
 .topic-grid {
   display: grid;
   grid-template-columns: repeat(3, minmax(0, 1fr));

assets/js/login.js

@@ -1,6 +1,14 @@
 const form = document.querySelector("#login-form");
 const nextInput = document.querySelector("#next-url");
 const statusEl = document.querySelector("#login-status");
+const brand = document.querySelector("#login-brand");
+const brandIcon = document.querySelector("#login-brand-icon");
+const brandText = document.querySelector("#login-brand-text");
+const sectionLink = document.querySelector("#login-section-link");
+const currentNav = document.querySelector("#login-nav-current");
+const kickerEl = document.querySelector("#login-kicker");
+const titleEl = document.querySelector("#login-title");
+const copyEl = document.querySelector("#login-copy");
 
 const params = new URLSearchParams(window.location.search);
 const requestedNext = params.get("next") || "/software.html";
@@ -12,6 +20,55 @@ function safeNext(value) {
   return "/software.html";
 }
 
+function loginContext(nextUrl) {
+  const cleanNext = safeNext(nextUrl);
+  if (/^\/?admin\/svn(?:\.html)?(?:$|[/?#])/.test(cleanNext)) {
+    return {
+      bodyClass: "login-context-svn",
+      title: "SVN 管理登录",
+      pageTitle: "sumi.work - SVN 管理登录",
+      kicker: "SVN Admin Access",
+      copy: "登录后即可进入 SVN 控制台，管理仓库、工作副本和版本操作。",
+      brandText: "sumi.work SVN 管理",
+      brandHref: "/admin/svn.html",
+      brandLabel: "返回 SVN 管理",
+      brandIcon: "assets/icons/svn.svg",
+      sectionText: "SVN 管理",
+      sectionHref: "/admin/svn.html",
+    };
+  }
+  return {
+    bodyClass: "login-context-player",
+    title: "玩家登录",
+    pageTitle: "sumi.work - 玩家登录",
+    kicker: "Player Access",
+    copy: "登录后即可下载软件中心里的安装包。",
+    brandText: "sumi.work 软件中心",
+    brandHref: "software.html",
+    brandLabel: "返回软件下载",
+    brandIcon: "assets/icons/software.svg",
+    sectionText: "软件下载",
+    sectionHref: "software.html",
+  };
+}
+
+function applyLoginContext() {
+  const context = loginContext(requestedNext);
+  document.body.classList.add(context.bodyClass);
+  document.title = context.pageTitle;
+  brand.href = context.brandHref;
+  brand.setAttribute("aria-label", context.brandLabel);
+  brandIcon.src = context.brandIcon;
+  brandText.textContent = context.brandText;
+  sectionLink.href = context.sectionHref;
+  sectionLink.textContent = context.sectionText;
+  currentNav.href = `login.html?next=${encodeURIComponent(safeNext(requestedNext))}`;
+  currentNav.textContent = context.title;
+  kickerEl.textContent = context.kicker;
+  titleEl.textContent = context.title;
+  copyEl.textContent = context.copy;
+}
+
 function setStatus(message, type = "") {
   statusEl.textContent = message;
   statusEl.classList.toggle("is-error", type === "error");
@@ -31,6 +88,7 @@ async function checkExistingLogin() {
 }
 
 nextInput.value = safeNext(requestedNext);
+applyLoginContext();
 
 form.addEventListener("submit", async (event) => {
   event.preventDefault();