feat(site): consistent card radius and remove duplicate login CTAs

Professional tidy-up of the landing experience:
- SurfaceCard: unified rounded-xl radius for a crisper, consistent look.
- Hero: matches the new card radius and gains a dual-direction title
  shadow so the headline stays readable over the header artwork.
- Login/register: drop the duplicated "no account / have an account"
  paragraphs — the forms already ship an inline footer, so one clear CTA
  cluster remains and the side column is cleaner.

src/app/(site)/login/page.tsx

@@ -4,7 +4,6 @@ import Image from "next/image";
 import { getTranslations } from "next-intl/server";
 import { AuthTopBar } from "@/components/auth/auth-top-bar";
 import { LoginForm } from "@/components/auth/login-form";
-import Link from "@/components/link";
 import { Reveal } from "@/components/motion-reveal";
 import { UserAvatarThumbnail } from "@/components/shared/user-avatar-thumbnail";
 import { SurfaceCard } from "@/components/surface-card";
@@ -188,22 +187,6 @@ export default async function LoginPage() {
 								</div>
 							</SurfaceCard>
 						)}
-
-						<p
-							className="text-xs text-center"
-							style={{ color: "var(--color-text-muted)" }}
-						>
-							{t("noAccount") ?? "No account?"}{" "}
-							<Link
-								href="/register"
-								className="font-extrabold hover:underline"
-								style={{
-									color: "var(--color-primary-readable, var(--color-primary))",
-								}}
-							>
-								{t("createOne") ?? "Create one"}
-							</Link>
-						</p>
 					</div>
 
 					{/* Right: form */}
@@ -211,7 +194,7 @@ export default async function LoginPage() {
 						<SurfaceCard
 							title={t("title")}
 							icon="/assets/images/icons/navigation/me.png"
-							bodyClassName="p-6"
+							bodyClassName="p-6 sm:p-7"
 						>
 							<p
 								className="text-sm mb-6"

src/app/(site)/page.tsx

@@ -214,7 +214,7 @@ export default async function Home() {
 			{/* ── Hero ── */}
 			<Reveal>
 				<div
-					className="relative overflow-hidden rounded-2xl sm:rounded-3xl border"
+					className="relative overflow-hidden rounded-xl border"
 					style={{
 						borderColor:
 							"color-mix(in srgb, var(--color-text-muted) 8%, transparent)",
@@ -270,6 +270,8 @@ export default async function Home() {
 							className="text-2xl font-black leading-[1.05] tracking-tight mb-2 sm:text-3xl md:text-5xl lg:text-6xl"
 							style={{
 								fontFamily: "var(--font-nunito)",
+								textShadow:
+									"0 1px 0 color-mix(in srgb, #ffffff 35%, transparent), 0 2px 14px color-mix(in srgb, #000 28%, transparent)",
 							}}
 						>
 							<span style={{ color: "var(--color-text-readable)" }}>

src/app/(site)/register/page.tsx

@@ -4,7 +4,6 @@ import Image from "next/image";
 import { getTranslations } from "next-intl/server";
 import { AuthTopBar } from "@/components/auth/auth-top-bar";
 import { RegisterForm } from "@/components/auth/register-form";
-import Link from "@/components/link";
 import { Reveal } from "@/components/motion-reveal";
 import { UserAvatarThumbnail } from "@/components/shared/user-avatar-thumbnail";
 import { SurfaceCard } from "@/components/surface-card";
@@ -197,22 +196,6 @@ export default async function RegisterPage() {
 								</div>
 							</SurfaceCard>
 						)}
-
-						<p
-							className="text-sm text-center"
-							style={{ color: "var(--color-text-muted)" }}
-						>
-							{tpr("alreadyHaveAccountPre")}{" "}
-							<Link
-								href="/login"
-								className="font-extrabold hover:underline"
-								style={{
-									color: "var(--color-primary-readable, var(--color-primary))",
-								}}
-							>
-								{tpr("alreadyHaveAccountLink")}
-							</Link>
-						</p>
 					</div>
 
 					{/* Right: form */}
@@ -220,7 +203,7 @@ export default async function RegisterPage() {
 						<SurfaceCard
 							title={tpr("title")}
 							icon="/assets/images/icons/navigation/me.png"
-							bodyClassName="p-6"
+							bodyClassName="p-6 sm:p-7"
 						>
 							<p
 								className="text-sm mb-6"

src/components/surface-card.tsx

@@ -48,7 +48,7 @@ export function SurfaceCard({
 
 	return (
 		<div
-			className={`surface-card card-hairline overflow-hidden rounded-2xl border bg-[var(--color-surface)] ${className}`}
+			className={`surface-card card-hairline overflow-hidden rounded-xl border bg-[var(--color-surface)] ${className}`}
 			style={{
 				borderColor: CARD_BORDER,
 				boxShadow: CARD_SHADOW,