diff --git a/app/globals.css b/app/globals.css
index 016247c..72b874a 100644
--- a/app/globals.css
+++ b/app/globals.css
@@ -130,6 +130,15 @@ body {
     0 10px 28px rgba(133, 252, 168, 0.28);
 }
 
+/* 사용자 액션(투표 제출) — 브랜드 포인트 퍼플 */
+.btn-share {
+  background: var(--share);
+  color: #fff;
+  box-shadow:
+    0 0 0 1px rgba(166, 94, 255, 0.5),
+    0 12px 30px rgba(166, 94, 255, 0.35);
+}
+
 .gold-card {
   background:
     linear-gradient(180deg, rgba(94, 240, 180, 0.08), rgba(21, 169, 155, 0.03)),
diff --git a/components/Arena.tsx b/components/Arena.tsx
index ce32282..1ab7920 100644
--- a/components/Arena.tsx
+++ b/components/Arena.tsx
@@ -15,7 +15,7 @@ import type {
 import Countdown from "./Countdown";
 import TeamFlag from "./TeamFlag";
 
-type Step = "pick" | "form" | "done";
+type Step = "form" | "done";
 
 const MODEL_ICON: Record<ModelName, string> = {
   GPT: "/icons/gpt.png",
@@ -46,7 +46,7 @@ export default function Arena({
   const [outcome, setOutcome] = useState<Outcome | null>(null);
   const [scoreA, setScoreA] = useState(2);
   const [scoreB, setScoreB] = useState(1);
-  const [step, setStep] = useState<Step>("pick");
+  const [step, setStep] = useState<Step>("form");
   const [email, setEmail] = useState("");
   const [notify, setNotify] = useState(true);
   const [crowd, setCrowd] = useState<CrowdStats>(initialCrowd);
@@ -80,10 +80,7 @@ export default function Arena({
       .map((p) => ({ model: p.model, exact: p.scoreA === scoreA && p.scoreB === scoreB }));
   }, [outcome, scoreA, scoreB, predictions]);
 
-  const submitPick = () => {
-    if (!outcome) return;
-    setStep("form");
-  };
+  const emailValid = EMAIL_RE.test(email.trim());
   const confirmSubmit = () => {
     if (!EMAIL_RE.test(email.trim())) return;
     setCrowd((c) => ({
@@ -263,43 +260,45 @@ export default function Arena({
         </section>
       )}
 
-      {/* ===== CTA 민트 #85FCA8 (진행 중일 때) ===== */}
-      {!finished && step === "pick" && (
+      {/* ===== 투표 마감/오픈 전: 상태 버튼만 ===== */}
+      {!finished && disabled && (
         <button
-          onClick={submitPick}
-          disabled={!outcome || disabled}
-          className="btn-mint mt-5 w-full rounded-2xl py-5 text-[20px] font-extrabold transition active:scale-[0.99] disabled:opacity-40 disabled:shadow-none"
+          disabled
+          className="btn-mint mt-5 w-full rounded-2xl py-5 text-[20px] font-extrabold opacity-60"
         >
           {ctaLabel}
         </button>
       )}
 
-      {/* ===== 폼: 이메일만 (D5, 닉네임 제거) ===== */}
-      {!finished && step === "form" && (
-        <div className="mt-5 space-y-2.5 rounded-2xl border border-[var(--line-d)] bg-[var(--bg2)] p-4">
+      {/* ===== 투표 제출 (D5): 이메일 + 단일 CTA를 한 카드로 통합 ===== */}
+      {!finished && !disabled && step === "form" && (
+        <div className="mt-5 rounded-2xl border-2 border-[var(--green)]/60 bg-[var(--bg2)] p-4 shadow-[0_0_24px_rgba(74,255,160,0.08)]">
+          <div className="mb-2.5 text-center text-[15px] font-extrabold text-[var(--green)]">
+            {t.emailGate}
+          </div>
           <input
             type="email"
             inputMode="email"
             value={email}
             onChange={(e) => setEmail(e.target.value)}
             placeholder={t.emailPh}
-            className="w-full rounded-lg border border-[var(--line-d)] bg-[#0f1217] px-3 py-3 text-[15px] text-white outline-none focus:border-[var(--green)]"
+            className="w-full rounded-xl border border-[var(--line-d)] bg-[#0f1217] px-4 py-3.5 text-[16px] text-white outline-none focus:border-[var(--green)]"
           />
-          <label className="flex items-start gap-2 text-[13px] text-[var(--ink-muted)]">
+          <label className="mt-2.5 flex items-start gap-2 text-[13px] leading-snug text-[var(--ink-muted)]">
             <input
               type="checkbox"
               checked={notify}
               onChange={(e) => setNotify(e.target.checked)}
-              className="mt-0.5 accent-[var(--mint)]"
+              className="mt-0.5 accent-[var(--share)]"
             />
             {t.notify}
           </label>
           <button
             onClick={confirmSubmit}
-            disabled={!EMAIL_RE.test(email.trim())}
-            className="btn-mint w-full rounded-xl py-3.5 text-[17px] font-extrabold transition active:scale-[0.99] disabled:opacity-40 disabled:shadow-none"
+            disabled={!emailValid}
+            className="btn-share mt-3.5 flex w-full items-center justify-center gap-2 rounded-2xl py-5 text-[19px] font-extrabold transition active:scale-[0.99] disabled:opacity-[0.72]"
           >
-            {t.submit}
+            {t.submit} <span aria-hidden>→</span>
           </button>
         </div>
       )}
diff --git a/lib/i18n.ts b/lib/i18n.ts
index ae67b6f..670ba70 100644
--- a/lib/i18n.ts
+++ b/lib/i18n.ts
@@ -62,6 +62,7 @@ type Dict = {
   ctaResult: string;
   ctaLocked: string;
   ctaOpens: (d: string) => string;
+  emailGate: string;
   emailPh: string;
   notify: string;
   submit: string;
@@ -121,9 +122,10 @@ export const DICT: Record<Lang, Dict> = {
     ctaResult: "결과 보기",
     ctaLocked: "예측 마감 (경기 시작)",
     ctaOpens: (d) => `투표 오픈 ${d}`,
-    emailPh: "이메일 (결과·다음 경기 알림)",
-    notify: "경기 결과가 나오면 알려주세요. 다음 경기·100만원 챌린지 소식도 받겠습니다.",
-    submit: "제출하고 AI와 겨루기",
+    emailGate: "투표를 제출하려면 이메일을 입력하세요",
+    emailPh: "이메일 입력 → 투표 결과·다음 경기 알림",
+    notify: "결과 알림 + 다음 경기 소식 + ₩100만 챌린지 기회까지 무료로 받기",
+    submit: "투표 제출하고 AI와 겨루기",
     myPick: "내 예측",
     sameAI: (m, exact) =>
       `당신은 ${m}와 같은 선택입니다.${exact ? " 스코어까지 일치!" : ""} 나머지 AI는 생각이 다릅니다.`,
@@ -180,9 +182,10 @@ export const DICT: Record<Lang, Dict> = {
     ctaResult: "View result",
     ctaLocked: "Closed (kickoff)",
     ctaOpens: (d) => `Opens ${d}`,
-    emailPh: "Email (result & next-match alerts)",
-    notify: "Notify me when the result is out. I'll also get next-match & ₩1,000,000 challenge news.",
-    submit: "Submit & face the AI",
+    emailGate: "Enter your email to submit your vote",
+    emailPh: "Your email → result & next-match alerts",
+    notify: "Result alerts + next-match news + a shot at the ₩1,000,000 challenge — free",
+    submit: "Submit your vote & face the AI",
     myPick: "My Pick",
     sameAI: (m, exact) =>
       `You matched ${m}.${exact ? " Exact score too!" : ""} The other AIs disagree.`,