feat: 시상식 reveal 페이지 (?mode=ceremony)

3 단계 진행:
1. 시상식 시작 화면 → 시작 버튼
2. 부문별 announce (label + 상품) → 🥁🥁🥁 → 우승팀 공개 버튼
3. 우승팀 reveal: gradient gold 큰 폰트 + balloons + fadeIn 애니메이션
4. 다음 부문 → 반복 → 모든 시상 완료 (snow + balloons)

진행자 클릭만으로 진행. session_state로 단계 관리.
CATEGORIES에 상품 매핑 (재미상=손선풍기, 완성도상=팜레스트, 실용성상=양우산).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

app.py

@@ -32,9 +32,9 @@ TEAMS = sorted(set(PARTICIPANTS.values())) if PARTICIPANTS else [
 ]
 
 CATEGORIES = [
-    ("fun_team", "🎉 재미상"),
-    ("polish_team", "🏆 완성도상"),
-    ("utility_team", "🛠 실용성상"),
+    ("fun_team", "🎉 재미상", "손선풍기 5개"),
+    ("polish_team", "🏆 완성도상", "팜레스트 5개"),
+    ("utility_team", "🛠 실용성상", "양우산 5개"),
 ]
 
 
@@ -117,7 +117,7 @@ def render_voter():
     with st.form("vote", clear_on_submit=False):
         st.divider()
         picks = {}
-        for col, label in CATEGORIES:
+        for col, label, _ in CATEGORIES:
             picks[col] = st.radio(
                 label,
                 candidates,
@@ -128,7 +128,7 @@ def render_voter():
         submitted = st.form_submit_button("제출")
 
     if submitted:
-        if any(picks.get(col) is None for col, _ in CATEGORIES):
+        if any(picks.get(col) is None for col, _, _ in CATEGORIES):
             st.error("3분야 모두 선택하세요.")
             return
 
@@ -208,7 +208,7 @@ def render_admin():
 
     public_lines = []  # 시상식 발표용 (하위 비공개)
 
-    for col, label in CATEGORIES:
+    for col, label, _ in CATEGORIES:
         rows = conn.execute(
             f"SELECT {col} AS team, COUNT(*) AS c FROM votes GROUP BY {col} ORDER BY c DESC, team ASC"
         ).fetchall()
@@ -248,11 +248,111 @@ def render_admin():
     conn.close()
 
 
+def render_ceremony():
+    """시상식 reveal 페이지. 진행자가 클릭으로 단계별 공개."""
+    token = st.query_params.get("token", "")
+    if token != ADMIN_TOKEN:
+        st.error("권한 없음. ?mode=ceremony&token=... 형식 필요.")
+        return
+
+    titles = get_titles()
+    conn = get_conn()
+
+    results = []
+    for col, label, prize in CATEGORIES:
+        rows = conn.execute(
+            f"SELECT {col} AS team, COUNT(*) AS c FROM votes "
+            f"GROUP BY {col} ORDER BY c DESC, team ASC"
+        ).fetchall()
+        if rows:
+            winner, votes = rows[0]
+            runner = rows[1][1] if len(rows) > 1 else 0
+            results.append((label, prize, winner, votes, votes - runner))
+    conn.close()
+
+    if "ceremony_step" not in st.session_state:
+        st.session_state.ceremony_step = 0
+    if "ceremony_revealed" not in st.session_state:
+        st.session_state.ceremony_revealed = False
+
+    st.markdown(
+        """
+        <style>
+        .stage-title { font-size: 70px; text-align: center; padding: 30px 0; }
+        .stage-prize { font-size: 32px; text-align: center; color: #888; }
+        .stage-drum { font-size: 90px; text-align: center; padding: 60px 0; }
+        .winner-name {
+            font-size: 110px; text-align: center; font-weight: bold;
+            background: linear-gradient(90deg, #ffd700, #ff8c00);
+            -webkit-background-clip: text;
+            -webkit-text-fill-color: transparent;
+            padding: 40px 0;
+        }
+        .winner-meta { font-size: 36px; text-align: center; padding: 20px 0; }
+        .stReveal { animation: fadeIn 1.5s ease-in; }
+        @keyframes fadeIn {
+            from { opacity: 0; transform: scale(0.5); }
+            to { opacity: 1; transform: scale(1); }
+        }
+        </style>
+        """,
+        unsafe_allow_html=True,
+    )
+
+    step = st.session_state.ceremony_step
+
+    if step == 0:
+        st.markdown('<div class="stage-title">🎉 해커톤 시상식 🎉</div>', unsafe_allow_html=True)
+        st.markdown('<div class="winner-meta">준비됐습니다</div>', unsafe_allow_html=True)
+        if st.button("시작 →", use_container_width=True, type="primary"):
+            st.session_state.ceremony_step = 1
+            st.session_state.ceremony_revealed = False
+            st.rerun()
+
+    elif step > len(results):
+        st.markdown('<div class="stage-title">🎊 모든 시상 완료 🎊</div>', unsafe_allow_html=True)
+        st.balloons()
+        st.snow()
+        if st.button("처음으로", use_container_width=True):
+            st.session_state.ceremony_step = 0
+            st.session_state.ceremony_revealed = False
+            st.rerun()
+
+    else:
+        label, prize, winner, votes, diff = results[step - 1]
+        st.markdown(f'<div class="stage-title">{label}</div>', unsafe_allow_html=True)
+        st.markdown(f'<div class="stage-prize">🎁 상품: {prize}</div>', unsafe_allow_html=True)
+
+        if not st.session_state.ceremony_revealed:
+            st.markdown('<div class="stage-drum">🥁🥁🥁</div>', unsafe_allow_html=True)
+            if st.button("우승팀 공개 →", use_container_width=True, type="primary"):
+                st.session_state.ceremony_revealed = True
+                st.rerun()
+        else:
+            st.balloons()
+            winner_label = fmt_team(winner, titles)
+            st.markdown(
+                f'<div class="winner-name stReveal">🏆<br>{winner_label}</div>',
+                unsafe_allow_html=True,
+            )
+            st.markdown(
+                f'<div class="winner-meta">{votes}표 (2위와 {diff}표 차이)</div>',
+                unsafe_allow_html=True,
+            )
+            next_label = "다음 부문 →" if step < len(results) else "마무리 →"
+            if st.button(next_label, use_container_width=True, type="primary"):
+                st.session_state.ceremony_step = step + 1
+                st.session_state.ceremony_revealed = False
+                st.rerun()
+
+
 def main():
-    st.set_page_config(page_title="해커톤 투표", page_icon="🗳")
+    st.set_page_config(page_title="해커톤 투표", page_icon="🗳", layout="wide")
     mode = st.query_params.get("mode", "vote")
     if mode == "admin":
         render_admin()
+    elif mode == "ceremony":
+        render_ceremony()
     else:
         render_voter()