feat: add news section with admin editor and public display

- NewsItem type with title, text, date, optional image and link
- Admin page at /admin/news with image upload and auto-date
- Public section between Pricing and FAQ, hidden when empty
- Nav link auto-hides when no news items exist

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/components/sections/News.tsx

@@ -0,0 +1,82 @@
+import Image from "next/image";
+import { Calendar, ExternalLink } from "lucide-react";
+import { SectionHeading } from "@/components/ui/SectionHeading";
+import { Reveal } from "@/components/ui/Reveal";
+import type { SiteContent } from "@/types/content";
+
+interface NewsProps {
+  data: SiteContent["news"];
+}
+
+function formatDate(iso: string): string {
+  try {
+    return new Date(iso).toLocaleDateString("ru-RU", {
+      day: "numeric",
+      month: "long",
+      year: "numeric",
+    });
+  } catch {
+    return iso;
+  }
+}
+
+export function News({ data }: NewsProps) {
+  if (!data.items || data.items.length === 0) return null;
+
+  return (
+    <section id="news" className="section-glow relative section-padding">
+      <div className="section-divider absolute top-0 left-0 right-0" />
+      <div className="section-container">
+        <Reveal>
+          <SectionHeading centered>{data.title}</SectionHeading>
+        </Reveal>
+
+        <Reveal>
+          <div className="mx-auto mt-10 max-w-4xl grid gap-4 sm:grid-cols-2">
+            {data.items.map((item, i) => (
+              <article
+                key={i}
+                className="group rounded-2xl border border-neutral-200 bg-white overflow-hidden transition-all duration-300 hover:shadow-lg dark:border-white/[0.06] dark:bg-[#0a0a0a] dark:hover:border-white/[0.12]"
+              >
+                {item.image && (
+                  <div className="relative aspect-[2/1] overflow-hidden">
+                    <Image
+                      src={item.image}
+                      alt={item.title}
+                      fill
+                      sizes="(min-width: 640px) 50vw, 100vw"
+                      className="object-cover transition-transform duration-500 group-hover:scale-105"
+                    />
+                  </div>
+                )}
+                <div className="p-5">
+                  <div className="flex items-center gap-1.5 text-xs text-neutral-400 dark:text-white/30">
+                    <Calendar size={12} />
+                    {formatDate(item.date)}
+                  </div>
+                  <h3 className="mt-2 text-base font-bold text-neutral-900 dark:text-white">
+                    {item.title}
+                  </h3>
+                  <p className="mt-2 text-sm leading-relaxed text-neutral-600 dark:text-neutral-400 line-clamp-4">
+                    {item.text}
+                  </p>
+                  {item.link && (
+                    <a
+                      href={item.link}
+                      target="_blank"
+                      rel="noopener noreferrer"
+                      className="mt-3 inline-flex items-center gap-1.5 text-sm font-medium text-gold-dark hover:text-gold transition-colors dark:text-gold-light"
+                    >
+                      <ExternalLink size={14} />
+                      Подробнее
+                    </a>
+                  )}
+                </div>
+              </article>
+            ))}
+          </div>
+        </Reveal>
+      </div>
+    </section>
+  );
+}