初始提交：姜十三论坛 Jiang13 Forum

轻量自用论坛，Go 单二进制 + React SPA 内嵌 + SQLite。

Co-authored-by: Cursor <cursoragent@cursor.com>

embed_static/static/css/style.css

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+/* 姜十三论坛全局样式 */
+:root {
+  --primary: #2c5530;
+  --primary-light: #3d7a44;
+  --accent: #c9a227;
+}
+
+body {
+  min-height: 100vh;
+  display: flex;
+  flex-direction: column;
+  background-color: #f8f9fa;
+}
+
+.navbar-brand {
+  font-weight: 700;
+  letter-spacing: 0.05em;
+}
+
+.site-footer {
+  margin-top: auto;
+  background: #212529;
+  color: #adb5bd;
+  padding: 1.5rem 0;
+  font-size: 0.875rem;
+}
+
+.post-content {
+  line-height: 1.8;
+  word-break: break-word;
+}
+
+.post-content img {
+  max-width: 100%;
+  height: auto;
+}
+
+.comment-floor {
+  border-left: 3px solid var(--primary);
+  padding-left: 1rem;
+}
+
+.avatar-sm {
+  width: 36px;
+  height: 36px;
+  object-fit: cover;
+  border-radius: 50%;
+}
+
+.avatar-md {
+  width: 64px;
+  height: 64px;
+  object-fit: cover;
+  border-radius: 50%;
+}
+
+.badge-pin {
+  background: var(--accent);
+}
+
+.admin-sidebar .nav-link.active {
+  background: var(--primary);
+  color: #fff;
+}
+
+.admin-sidebar .nav-link {
+  color: #333;
+  border-radius: 0.375rem;
+  margin-bottom: 0.25rem;
+}
+
+.login-slogan {
+  font-style: italic;
+  color: #6c757d;
+  letter-spacing: 0.1em;
+}
+
+@media (max-width: 576px) {
+  .navbar-brand span.en { display: none; }
+}