diff --git a/package.json b/package.json
index bb6faef..702bd0d 100644
--- a/package.json
+++ b/package.json
@@ -8,6 +8,8 @@
     "preview": "vite preview"
   },
   "dependencies": {
+    "@atproto/api": "^0.19.3",
+    "@atproto/oauth-client-browser": "^0.3.41",
     "@pixiv/three-vrm": "^3.4.4",
     "@pixiv/three-vrm-animation": "^3.4.4",
     "@react-three/drei": "^10.7.7",
diff --git a/src/App.jsx b/src/App.jsx
index e5b03c5..00460bd 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -4,19 +4,26 @@ import { Canvas } from '@react-three/fiber';
 import AtmosphereScene from './AtmosphereScene';
 import AvatarScene from './AvatarScene';
 import { LOCATIONS, teleportTo, worldState } from './worldState';
-import { adminMode, onAdminChange } from './controls/KeyInput';
+import { onAdminChange } from './controls/KeyInput';
 import ControlPanel from './ui/ControlPanel';
 import LoadingScreen from './ui/LoadingScreen';
+import { login as authLogin, initSession, isLoggedIn, saveScore, getHandle, logout } from './lib/auth';
 
 const ACTION_SEQUENCE = ['attack', 'skill', 'jump', 'fly_dodge', 'damage'];
 const TELEPORT_ANIM = 'fly_dodge';
 const AUTO_INTERVAL_MIN = 15000;
 const AUTO_INTERVAL_MAX = 40000;
+const BURST_COOLDOWN = 10000;
+const SKILL_COOLDOWN = 3000;
+const ACTION_COOLDOWN = 3000;
+const SCORE_DURATION = 20000;
+const CROWN_THRESHOLDS = { bronze: 100000, silver: 500000, gold: 1000000 };
 const NASA_URL = 'https://eyes.nasa.gov/apps/solar-system/#/earth?featured=false&detailPanel=false&logo=false&search=false&shareButton=false&menu=false&collapseSettingsOptions=true&hideFullScreenToggle=true';
 
 const BASE_URL = import.meta.env.BASE_URL;
 const VRM_FILES = ['ai.vrm', 'ai_mode.vrm'];
 
+// --- Loading wrapper ---
 export default function App() {
   const [loadProgress, setLoadProgress] = useState(0);
   const [loaded, setLoaded] = useState(false);
@@ -27,7 +34,6 @@ export default function App() {
     const total = VRM_FILES.length;
     let done = 0;
 
-    // Use XMLHttpRequest for progress tracking + populate browser cache
     function loadFile(file) {
       return new Promise((resolve) => {
         const xhr = new XMLHttpRequest();
@@ -35,31 +41,22 @@ export default function App() {
         xhr.responseType = 'arraybuffer';
         xhr.onprogress = (e) => {
           if (e.lengthComputable && !cancelled) {
-            const fileProgress = e.loaded / e.total;
-            setLoadProgress(((done + fileProgress) / total) * 100);
+            setLoadProgress(((done + e.loaded / e.total) / total) * 100);
           }
         };
-        xhr.onload = () => {
-          done++;
-          if (!cancelled) setLoadProgress((done / total) * 100);
-          resolve();
-        };
+        xhr.onload = () => { done++; if (!cancelled) setLoadProgress((done / total) * 100); resolve(); };
         xhr.onerror = () => { done++; resolve(); };
         xhr.send();
       });
     }
 
-    // Load sequentially for accurate progress
     loadFile(VRM_FILES[0])
       .then(() => loadFile(VRM_FILES[1]))
       .then(() => {
-        if (!cancelled) {
-          setLoadProgress(100);
-          // Mount app behind loading screen, let it initialize
-          setTimeout(() => setLoaded(true), 300);
-          // Then fade out loading screen after app has time to render
-          setTimeout(() => setFadeOut(true), 2000);
-        }
+        if (cancelled) return;
+        setLoadProgress(100);
+        setTimeout(() => setLoaded(true), 300);
+        setTimeout(() => setFadeOut(true), 2000);
       });
 
     return () => { cancelled = true; };
@@ -77,10 +74,57 @@ export default function App() {
   );
 }
 
+// --- Helpers ---
+function playSound(path, volume) {
+  const audio = new Audio(`${BASE_URL}${path}`);
+  audio.volume = volume;
+  audio.play().catch(() => {});
+  return audio;
+}
+
+function calcDamage(vrmModel) {
+  const baseDmg = Math.floor(Math.random() * 100000) + 1;
+  const modeMult = vrmModel === 'ai_mode.vrm' ? 2 : 1;
+  const hour = worldState.currentHour;
+  const hourMult = Math.max(1, Math.round(12 - Math.abs(hour - 12)) + 1);
+  const locMult = { Tokyo: 1, Fuji: 2, Space: 3 }[worldState.currentLocation] || 1;
+  return baseDmg * modeMult * hourMult * locMult;
+}
+
+// --- Crown row component ---
+function CrownRow({ tier, score, filter, toggleBgm, playing }) {
+  if (!score) return null;
+  return (
+    <div style={{
+      padding: '4px 8px',
+      background: 'rgba(255,255,255,0.1)',
+      border: '1px solid rgba(255,255,255,0.2)',
+      borderRadius: '4px',
+      display: 'flex', alignItems: 'center', gap: 6,
+    }}>
+      <img src={`${BASE_URL}icon/crown.svg`} alt={tier} style={{ width: 16, height: 16, filter }} />
+      <span style={{ color: 'rgba(255,255,255,0.5)', fontSize: '11px', fontFamily: 'monospace' }}>{score}</span>
+      <img
+        src={`${BASE_URL}icon/play.svg`} alt="play"
+        onClick={() => toggleBgm(tier)}
+        style={{ width: 14, height: 14, filter: 'brightness(0) invert(1)', opacity: playing ? 1 : 0.4, cursor: 'pointer' }}
+      />
+    </div>
+  );
+}
+
+const CROWN_FILTERS = {
+  gold: 'brightness(0) invert(1) sepia(1) saturate(10) hue-rotate(330deg)',
+  silver: 'brightness(0) invert(1) brightness(0.9)',
+  bronze: 'brightness(0) invert(1) sepia(1) saturate(10) hue-rotate(90deg)',
+};
+
+// --- Main app ---
 function AppMain() {
+  // State
   const [animState, setAnimState] = useState({ name: 'fly_idle', count: 0 });
   const [isAdmin, setIsAdmin] = useState(false);
-  const [view, setView] = useState('avatar'); // 'avatar' | 'nasa'
+  const [view, setView] = useState('avatar');
   const [timeScale, setTimeScale] = useState(100);
   const [camSpeed, setCamSpeed] = useState(0.05);
   const [vrmModel, setVrmModel] = useState('ai.vrm');
@@ -89,53 +133,48 @@ function AppMain() {
   const [burstSky, setBurstSky] = useState(null);
   const [damageNum, setDamageNum] = useState(null);
   const [score, setScore] = useState(0);
-  const scoreTimerRef = useRef(null);
   const [scoreTimeLeft, setScoreTimeLeft] = useState(0);
-  const scoreEndRef = useRef(0);
-  const scoreRafRef = useRef(null);
   const [crowns, setCrowns] = useState({ bronze: 0, silver: 0, gold: 0 });
   const [playingBgm, setPlayingBgm] = useState(null);
-  const bgmRef = useRef(null);
 
-  const toggleBgm = useCallback((tier) => {
-    if (bgmRef.current) {
-      bgmRef.current.pause();
-      bgmRef.current = null;
-      if (playingBgm === tier) { setPlayingBgm(null); return; }
-    }
-    if (volumeRef.current < 0.5) { handleVolumeChange(0.5); }
-    const audio = new Audio(`${BASE_URL}music/${tier}.mp3`);
-    audio.volume = volumeRef.current;
-    audio.loop = true;
-    audio.play().catch(() => {});
-    audio.onended = () => setPlayingBgm(null);
-    bgmRef.current = audio;
-    setPlayingBgm(tier);
-  }, [playingBgm]);
+  // Auth state
+  const [authDid, setAuthDid] = useState(null);
+  const [authLoading, setAuthLoading] = useState(false);
+  const [showLogin, setShowLogin] = useState(false);
+  const [handleInput, setHandleInput] = useState('');
+  const [saveStatus, setSaveStatus] = useState(null);
+  const [savedHandle, setSavedHandle] = useState(null);
+
+  // Refs
   const langRef = useRef('en');
   const volumeRef = useRef(0);
-  const voiceIndexRef = useRef(0);
-  const voicePattern = ['normal','normal','normal','normal','normal','normal','normal','normal','skill','skill'];
+  const bgmRef = useRef(null);
+  const windRef = useRef(null);
+  const countRef = useRef(0);
   const actionIndexRef = useRef(0);
   const teleportIndexRef = useRef(0);
-  const countRef = useRef(0);
+  const actionCoolRef = useRef(0);
+  const burstCoolRef = useRef(0);
+  const skillCoolRef = useRef(0);
+  const scoreTimerRef = useRef(null);
+  const scoreEndRef = useRef(0);
+  const scoreRafRef = useRef(null);
+  const viewRef = useRef(view);
+  const appStartRef = useRef(Date.now());
+  const lastSwitchRef = useRef(0);
+  const doSkillRef = useRef(null);
+  const doBurstRef = useRef(null);
 
-  useEffect(() => {
-    return onAdminChange((v) => setIsAdmin(v));
-  }, []);
+  viewRef.current = view;
 
-  // Background wind sound loop
-  const windRef = useRef(null);
-  useEffect(() => {
-    const wind = new Audio(`${import.meta.env.BASE_URL}sound/wind.mp3`);
-    wind.loop = true;
-    wind.volume = volumeRef.current;
-    wind.play().catch(() => {});
-    windRef.current = wind;
-    return () => { wind.pause(); wind.src = ''; };
+  // --- Callbacks ---
+  const playAnim = useCallback((name) => {
+    countRef.current += 1;
+    setAnimState({ name, count: countRef.current });
   }, []);
 
   const handleLangChange = useCallback((v) => { setLang(v); langRef.current = v; }, []);
+
   const handleVolumeChange = useCallback((v) => {
     setVolume(v);
     volumeRef.current = v;
@@ -143,88 +182,21 @@ function AppMain() {
     if (bgmRef.current) bgmRef.current.volume = v;
   }, []);
 
-  useEffect(() => {
-    if (!windRef.current) return;
-    if (view === 'nasa') {
-      windRef.current.pause();
-    } else {
-      windRef.current.play().catch(() => {});
+  const toggleBgm = useCallback((tier) => {
+    if (bgmRef.current) {
+      bgmRef.current.pause();
+      bgmRef.current = null;
+      if (playingBgm === tier) { setPlayingBgm(null); return; }
     }
-  }, [view]);
-
-  const playSkillVoice = useCallback(() => {
-    const type = Math.random() < 1/6 ? 'skill' : 'normal';
-    const suffix = langRef.current === 'en' ? '_en' : '';
-    const file = `${import.meta.env.BASE_URL}voice/ai/${type}_1${suffix}.mp3`;
-    const audio = new Audio(file);
+    if (volumeRef.current < 0.5) handleVolumeChange(0.5);
+    const audio = new Audio(`${BASE_URL}music/${tier}.mp3`);
     audio.volume = volumeRef.current;
+    audio.loop = true;
     audio.play().catch(() => {});
-  }, []);
-
-  const playAnim = useCallback((name) => {
-    countRef.current += 1;
-    setAnimState({ name, count: countRef.current });
-  }, []);
-
-  const actionCoolRef = useRef(0);
-  const doSkillRef = useRef(null);
-
-  const handleKey = useCallback((e) => {
-    if (e.code === 'Escape') {
-      setView(view === 'nasa' ? 'avatar' : 'nasa');
-      return;
-    }
-    if (e.code === 'Space') {
-      e.preventDefault();
-      const now = Date.now();
-      if (now - actionCoolRef.current < 3000) return;
-      actionCoolRef.current = now;
-      const idx = actionIndexRef.current;
-      const anim = ACTION_SEQUENCE[idx % ACTION_SEQUENCE.length];
-      playAnim(anim);
-      actionIndexRef.current = idx + 1;
-    } else if (e.code === 'KeyT') {
-      e.preventDefault();
-      const idx = teleportIndexRef.current;
-      const loc = LOCATIONS[idx % LOCATIONS.length];
-      playAnim(TELEPORT_ANIM);
-      teleportTo(loc);
-      teleportIndexRef.current = idx + 1;
-    } else if (e.code === 'KeyS') {
-      e.preventDefault();
-      doSkillRef.current?.();
-    } else if (e.code === 'KeyB') {
-      e.preventDefault();
-      doBurstRef.current?.();
-    }
-  }, [playAnim, view]);
-
-  useEffect(() => {
-    window.addEventListener('keydown', handleKey);
-    return () => window.removeEventListener('keydown', handleKey);
-  }, [handleKey]);
-
-  const viewRef = useRef(view);
-  viewRef.current = view;
-
-  useEffect(() => {
-    const scheduleNext = () => {
-      const delay = AUTO_INTERVAL_MIN + Math.random() * (AUTO_INTERVAL_MAX - AUTO_INTERVAL_MIN);
-      return setTimeout(() => {
-        // NASAビュー中はスキップ
-        if (viewRef.current !== 'nasa') {
-          const idx = teleportIndexRef.current;
-          const loc = LOCATIONS[idx % LOCATIONS.length];
-          playAnim(TELEPORT_ANIM);
-          teleportTo(loc);
-          teleportIndexRef.current = idx + 1;
-        }
-        timerRef.current = scheduleNext();
-      }, delay);
-    };
-    const timerRef = { current: scheduleNext() };
-    return () => clearTimeout(timerRef.current);
-  }, [playAnim]);
+    audio.onended = () => setPlayingBgm(null);
+    bgmRef.current = audio;
+    setPlayingBgm(tier);
+  }, [playingBgm, handleVolumeChange]);
 
   const doTeleport = useCallback(() => {
     const idx = teleportIndexRef.current;
@@ -234,48 +206,31 @@ function AppMain() {
     teleportIndexRef.current = idx + 1;
   }, [playAnim]);
 
-  const burstCoolRef = useRef(0);
-  const doBurstRef = useRef(null);
   const doBurst = useCallback(() => {
     const now = Date.now();
-    if (now - burstCoolRef.current < 10000) return;
+    if (now - burstCoolRef.current < BURST_COOLDOWN) return;
     burstCoolRef.current = now;
     playAnim('burst');
-    // Sky: sunset → night during burst
+
+    // Sky effect
     setBurstSky(new Date('2024-06-21T17:30:00'));
-    if (windRef.current) { windRef.current.pause(); }
-    const burstSound = new Audio(`${import.meta.env.BASE_URL}sound/burst.mp3`);
-    burstSound.volume = volumeRef.current;
-    burstSound.play().catch(() => {});
+    if (windRef.current) windRef.current.pause();
+    playSound('sound/burst.mp3', volumeRef.current);
     setTimeout(() => {
       setBurstSky(null);
-      if (windRef.current) { windRef.current.play().catch(() => {}); }
+      if (windRef.current) windRef.current.play().catch(() => {});
     }, 4500);
-    // Damage number - show during blackhole phase
+
+    // Damage + score
     setTimeout(() => {
-      const burstEnd = new Audio(`${BASE_URL}sound/burst_end.mp3`);
-      burstEnd.volume = volumeRef.current;
-      burstEnd.play().catch(() => {});
-      const baseDmg = Math.floor(Math.random() * 100000) + 1;
-      // x2 if ai_mode
-      const modeMult = vrmModel === 'ai_mode.vrm' ? 2 : 1;
-      // x1-x12 based on sun position (noon=x12, midnight=x1)
-      const hour = worldState.currentHour;
-      const hourMult = Math.max(1, Math.round(12 - Math.abs(hour - 12)) + 1);
-      // x1-x3 based on location
-      const locMult = { Tokyo: 1, Fuji: 2, Space: 3 }[worldState.currentLocation] || 1;
-      const dmg = baseDmg * modeMult * hourMult * locMult;
-      const x = 40 + Math.random() * 20;
-      const y = 35 + Math.random() * 20;
-      setDamageNum({ value: dmg, x, y });
+      playSound('sound/burst_end.mp3', volumeRef.current);
+      const dmg = calcDamage(vrmModel);
+      setDamageNum({ value: dmg, x: 40 + Math.random() * 20, y: 35 + Math.random() * 20 });
       setTimeout(() => setDamageNum(null), 1500);
-      // Score system
+
       setScore(prev => {
-        const newScore = prev + dmg;
-        // Reset timer: 10s after first damage
-        // Only start timer on first damage
         if (!scoreTimerRef.current) {
-          scoreEndRef.current = Date.now() + 20000;
+          scoreEndRef.current = Date.now() + SCORE_DURATION;
           let lastLeft = -1;
           const tick = () => {
             const left = Math.max(0, Math.ceil((scoreEndRef.current - Date.now()) / 1000));
@@ -284,261 +239,286 @@ function AppMain() {
           };
           tick();
           scoreTimerRef.current = setTimeout(() => {
-            setScore(prev => {
+            setScore(s => {
               setCrowns(c => ({
-                bronze: (prev >= 100000 && !c.bronze) ? prev : c.bronze,
-                silver: (prev >= 500000 && !c.silver) ? prev : c.silver,
-                gold: (prev >= 1000000 && !c.gold) ? prev : c.gold,
+                bronze: (s >= CROWN_THRESHOLDS.bronze && !c.bronze) ? s : c.bronze,
+                silver: (s >= CROWN_THRESHOLDS.silver && !c.silver) ? s : c.silver,
+                gold: (s >= CROWN_THRESHOLDS.gold && !c.gold) ? s : c.gold,
               }));
               return 0;
             });
             setScoreTimeLeft(0);
             scoreTimerRef.current = null;
-          }, 20000);
+          }, SCORE_DURATION);
         }
-        return newScore;
+        return prev + dmg;
       });
     }, 2500);
+
+    // Voice
     const suffix = langRef.current === 'en' ? '_en' : '';
-    const burstType = Math.random() < 1/6 ? 'burst' : 'normal';
-    const file = `${import.meta.env.BASE_URL}voice/ai/${burstType}_1${suffix}.mp3`;
-    const audio = new Audio(file);
-    audio.volume = volumeRef.current;
-    audio.play().catch(() => {});
-  }, [playAnim]);
+    const voiceType = Math.random() < 1 / 6 ? 'burst' : 'normal';
+    playSound(`voice/ai/${voiceType}_1${suffix}.mp3`, volumeRef.current);
+  }, [playAnim, vrmModel]);
   doBurstRef.current = doBurst;
 
-  const skillCoolRef = useRef(0);
   const doSkill = useCallback(() => {
     const now = Date.now();
-    if (now - skillCoolRef.current < 3000) return;
+    if (now - skillCoolRef.current < SKILL_COOLDOWN) return;
     skillCoolRef.current = now;
     playAnim('skill');
-    playSkillVoice();
+    const suffix = langRef.current === 'en' ? '_en' : '';
+    const voiceType = Math.random() < 1 / 6 ? 'skill' : 'normal';
+    playSound(`voice/ai/${voiceType}_1${suffix}.mp3`, volumeRef.current);
     setVrmModel(prev => prev === 'ai.vrm' ? 'ai_mode.vrm' : 'ai.vrm');
-  }, [playAnim, playSkillVoice]);
+  }, [playAnim]);
   doSkillRef.current = doSkill;
 
-  const appStartRef = useRef(Date.now());
-  const lastSwitchRef = useRef(0);
   const handleZoomOut = useCallback(() => {
     const now = Date.now();
-    // 起動後15秒、または切り替え後5秒はブロック
-    if (now - appStartRef.current < 15000) return;
-    if (now - lastSwitchRef.current < 5000) return;
+    if (now - appStartRef.current < 15000 || now - lastSwitchRef.current < 5000) return;
     lastSwitchRef.current = now;
     setView('nasa');
   }, []);
 
+  // Auth
+  const handleLogin = useCallback(async () => {
+    if (!handleInput.trim()) return;
+    setAuthLoading(true);
+    try {
+      await authLogin(handleInput.trim());
+    } catch {
+      setAuthLoading(false);
+    }
+  }, [handleInput]);
+
+  const handleSave = useCallback(async () => {
+    if (!isLoggedIn()) return;
+    setSaveStatus('saving');
+    try {
+      const result = await saveScore(crowns);
+      if (result?.handle) setSavedHandle(result.handle);
+      setSaveStatus('saved');
+    } catch {
+      setSaveStatus('error');
+      setTimeout(() => setSaveStatus(null), 2000);
+    }
+  }, [crowns]);
+
+  const handleLogout = useCallback(async () => {
+    await logout();
+    setAuthDid(null);
+    setSavedHandle(null);
+    setSaveStatus(null);
+  }, []);
+
+  // --- Effects ---
+  useEffect(() => onAdminChange((v) => setIsAdmin(v)), []);
+
+  useEffect(() => {
+    initSession().then(async did => {
+      if (!did) return;
+      setAuthDid(did);
+      const h = await getHandle();
+      if (h) setSavedHandle(h);
+    }).catch(() => {});
+  }, []);
+
+  // Wind
+  useEffect(() => {
+    const wind = new Audio(`${BASE_URL}sound/wind.mp3`);
+    wind.loop = true;
+    wind.volume = volumeRef.current;
+    wind.play().catch(() => {});
+    windRef.current = wind;
+    return () => { wind.pause(); wind.src = ''; };
+  }, []);
+
+  useEffect(() => {
+    if (!windRef.current) return;
+    view === 'nasa' ? windRef.current.pause() : windRef.current.play().catch(() => {});
+  }, [view]);
+
+  // Keyboard
+  const handleKey = useCallback((e) => {
+    if (e.target.tagName === 'INPUT' || e.target.tagName === 'TEXTAREA') return;
+    if (e.code === 'Escape') { setView(v => v === 'nasa' ? 'avatar' : 'nasa'); return; }
+    if (e.code === 'Space') {
+      e.preventDefault();
+      const now = Date.now();
+      if (now - actionCoolRef.current < ACTION_COOLDOWN) return;
+      actionCoolRef.current = now;
+      const idx = actionIndexRef.current;
+      playAnim(ACTION_SEQUENCE[idx % ACTION_SEQUENCE.length]);
+      actionIndexRef.current = idx + 1;
+    } else if (e.code === 'KeyT') { e.preventDefault(); doTeleport(); }
+    else if (e.code === 'KeyS') { e.preventDefault(); doSkillRef.current?.(); }
+    else if (e.code === 'KeyB') { e.preventDefault(); doBurstRef.current?.(); }
+  }, [playAnim, doTeleport]);
+
+  useEffect(() => {
+    window.addEventListener('keydown', handleKey);
+    return () => window.removeEventListener('keydown', handleKey);
+  }, [handleKey]);
+
+  // Auto teleport
+  useEffect(() => {
+    const scheduleNext = () => {
+      const delay = AUTO_INTERVAL_MIN + Math.random() * (AUTO_INTERVAL_MAX - AUTO_INTERVAL_MIN);
+      return setTimeout(() => {
+        if (viewRef.current !== 'nasa') {
+          const idx = teleportIndexRef.current;
+          teleportTo(LOCATIONS[idx % LOCATIONS.length]);
+          playAnim(TELEPORT_ANIM);
+          teleportIndexRef.current = idx + 1;
+        }
+        timerRef.current = scheduleNext();
+      }, delay);
+    };
+    const timerRef = { current: scheduleNext() };
+    return () => clearTimeout(timerRef.current);
+  }, [playAnim]);
+
+  // --- Render ---
   const layerStyle = { position: 'absolute', top: 0, left: 0, width: '100%', height: '100%' };
-
   const btnStyle = {
-    padding: '8px 16px',
-    background: 'rgba(255,255,255,0.12)',
-    color: '#fff',
-    border: '1px solid rgba(255,255,255,0.25)',
-    borderRadius: '6px',
-    cursor: 'pointer',
-    fontSize: '13px',
-    backdropFilter: 'blur(4px)',
+    padding: '8px 16px', background: 'rgba(255,255,255,0.12)', color: '#fff',
+    border: '1px solid rgba(255,255,255,0.25)', borderRadius: '6px',
+    cursor: 'pointer', fontSize: '13px', backdropFilter: 'blur(4px)',
   };
-
   const isNasa = view === 'nasa';
+  const hasCrowns = crowns.bronze || crowns.silver || crowns.gold;
 
   return (
     <div style={{ position: 'relative', width: '100vw', height: '100vh', background: '#000' }}>
-      {/* NASA iframe layer - fully interactive */}
+      {/* NASA */}
       <iframe
         src={NASA_URL}
-        style={{
-          ...layerStyle,
-          zIndex: isNasa ? 10 : -1,
-          border: 'none',
-          opacity: isNasa ? 1 : 0,
-          transition: 'opacity 1.5s ease',
-          pointerEvents: isNasa ? 'auto' : 'none',
-        }}
-        title="NASA Solar System"
-        allowFullScreen
-        allow="accelerometer; autoplay; encrypted-media; gyroscope"
+        style={{ ...layerStyle, zIndex: isNasa ? 10 : -1, border: 'none', opacity: isNasa ? 1 : 0, transition: 'opacity 1.5s ease', pointerEvents: isNasa ? 'auto' : 'none' }}
+        title="NASA Solar System" allowFullScreen allow="accelerometer; autoplay; encrypted-media; gyroscope"
       />
-      {/* NASA center button */}
       {isNasa && (
         <button
           onClick={() => { lastSwitchRef.current = Date.now(); setView('avatar'); }}
           onMouseEnter={() => { lastSwitchRef.current = Date.now(); setView('avatar'); }}
           onTouchStart={() => { lastSwitchRef.current = Date.now(); setView('avatar'); }}
-          style={{
-            position: 'absolute', top: '50%', left: '50%',
-            transform: 'translate(-50%, -50%)', zIndex: 100,
-            width: 40, height: 40, borderRadius: '50%',
-            background: 'rgba(255,255,255,0.08)', border: '1px solid rgba(255,255,255,0.15)',
-            cursor: 'pointer', pointerEvents: 'auto',
-          }}
+          style={{ position: 'absolute', top: '50%', left: '50%', transform: 'translate(-50%, -50%)', zIndex: 100, width: 40, height: 40, borderRadius: '50%', background: 'rgba(255,255,255,0.08)', border: '1px solid rgba(255,255,255,0.15)', cursor: 'pointer', pointerEvents: 'auto' }}
         />
       )}
 
-      {/* Atmosphere background */}
+      {/* Sky */}
       <div style={{ ...layerStyle, zIndex: 0, opacity: isNasa ? 0 : 1, transition: 'opacity 1.5s ease' }}>
         <Canvas gl={{ alpha: true, antialias: true }}>
           <AtmosphereScene timeScale={timeScale} overrideDate={burstSky} overrideTimeScale={burstSky ? 8000 : undefined} />
         </Canvas>
       </div>
 
-      {/* Avatar layer */}
+      {/* Avatar */}
       <div style={{ ...layerStyle, zIndex: 1, pointerEvents: 'none', opacity: isNasa ? 0 : 1, transition: 'opacity 1.5s ease' }}>
         <div style={{ width: '100%', height: '100%', pointerEvents: isNasa ? 'none' : 'auto' }}>
           <AvatarScene selectedAnimation={animState} onZoomOut={handleZoomOut} camSpeed={camSpeed} vrmModel={vrmModel} />
         </div>
       </div>
 
-      {/* Control panel */}
+      {/* Controls */}
       {!isNasa && (
         <ControlPanel
-          timeScale={timeScale}
-          onTimeScaleChange={setTimeScale}
-          camSpeed={camSpeed}
-          onCamSpeedChange={setCamSpeed}
-          onSkill={doSkill}
-          onBurst={doBurst}
-          lang={lang}
-          onLangChange={handleLangChange}
-          volume={volume}
-          onVolumeChange={handleVolumeChange}
+          timeScale={timeScale} onTimeScaleChange={setTimeScale}
+          camSpeed={camSpeed} onCamSpeedChange={setCamSpeed}
+          onSkill={doSkill} onBurst={doBurst}
+          lang={lang} onLangChange={handleLangChange}
+          volume={volume} onVolumeChange={handleVolumeChange}
         />
       )}
 
       {/* Score */}
       {!isNasa && score > 0 && (
-        <div style={{
-          position: 'absolute',
-          top: 16,
-          left: 16,
-          zIndex: 3,
-          display: 'flex',
-          alignItems: 'center',
-          gap: 8,
-          pointerEvents: 'none',
-        }}>
-          <span style={{
-            color: 'rgba(255, 255, 255, 0.7)',
-            fontSize: '14px',
-            fontFamily: 'monospace',
-          }}>
-            SCORE {score}
-          </span>
+        <div style={{ position: 'absolute', top: 16, left: 16, zIndex: 3, display: 'flex', alignItems: 'center', gap: 8, pointerEvents: 'none' }}>
+          <span style={{ color: 'rgba(255,255,255,0.7)', fontSize: '14px', fontFamily: 'monospace' }}>SCORE {score}</span>
           {scoreTimeLeft > 0 && (
-            <span style={{
-              padding: '2px 8px',
-              background: 'rgba(255,255,255,0.1)',
-              border: '1px solid rgba(255,255,255,0.2)',
-              borderRadius: '4px',
-              color: 'rgba(255, 255, 255, 0.5)',
-              fontSize: '12px',
-              fontFamily: 'monospace',
-            }}>
+            <span style={{ padding: '2px 8px', background: 'rgba(255,255,255,0.1)', border: '1px solid rgba(255,255,255,0.2)', borderRadius: '4px', color: 'rgba(255,255,255,0.5)', fontSize: '12px', fontFamily: 'monospace' }}>
               {scoreTimeLeft}s
             </span>
           )}
         </div>
       )}
 
-      {/* Damage number */}
+      {/* Damage */}
       {damageNum && (
         <div style={{
-          position: 'absolute',
-          left: `${damageNum.x}%`,
-          top: `${damageNum.y}%`,
-          zIndex: 50,
-          color: 'rgba(255, 220, 50, 0.75)',
-          fontSize: '48px',
-          fontWeight: 'bold',
-          fontFamily: 'monospace',
-          textShadow: '0 0 10px rgba(255, 180, 0, 0.5)',
-          pointerEvents: 'none',
-          animation: 'dmgFade 1.5s ease-out forwards',
+          position: 'absolute', left: `${damageNum.x}%`, top: `${damageNum.y}%`, zIndex: 50,
+          color: 'rgba(255,220,50,0.75)', fontSize: '48px', fontWeight: 'bold', fontFamily: 'monospace',
+          textShadow: '0 0 10px rgba(255,180,0,0.5)', pointerEvents: 'none', animation: 'dmgFade 1.5s ease-out forwards',
         }}>
           {damageNum.value}
         </div>
       )}
-      <style>{`
-        @keyframes dmgFade {
-          0% { opacity: 1; transform: translateY(0) scale(1); }
-          100% { opacity: 0; transform: translateY(-40px) scale(1.2); }
-        }
-      `}</style>
+      <style>{`@keyframes dmgFade { 0% { opacity:1; transform:translateY(0) scale(1); } 100% { opacity:0; transform:translateY(-40px) scale(1.2); } }`}</style>
 
-      {/* Clear crowns - gold(top), silver, bronze(bottom) */}
-      {!isNasa && (crowns.bronze || crowns.silver || crowns.gold) && (
-        <div style={{
-          position: 'fixed',
-          bottom: 'max(16px, env(safe-area-inset-bottom, 0px))',
-          right: 16,
-          zIndex: 100,
-          display: 'flex',
-          flexDirection: 'column',
-          gap: 4,
-        }}>
-          {crowns.gold > 0 && (
-            <div style={{
-              padding: '4px 8px',
-              background: 'rgba(255,255,255,0.1)',
-              border: '1px solid rgba(255,255,255,0.2)',
-              borderRadius: '4px',
-              display: 'flex', alignItems: 'center', gap: 6,
-            }}>
-              <img src={`${import.meta.env.BASE_URL}icon/crown.svg`} alt="gold" style={{ width: 16, height: 16, filter: 'brightness(0) invert(1) sepia(1) saturate(10) hue-rotate(330deg)' }} />
-              <span style={{ color: 'rgba(255,255,255,0.5)', fontSize: '11px', fontFamily: 'monospace' }}>{crowns.gold}</span>
-              <img
-                src={`${import.meta.env.BASE_URL}icon/play.svg`} alt="play"
-                onClick={() => toggleBgm('gold')}
-                style={{ width: 14, height: 14, filter: 'brightness(0) invert(1)', opacity: playingBgm === 'gold' ? 1 : 0.4, cursor: 'pointer' }}
-              />
+      {/* Crown panel */}
+      {!isNasa && (hasCrowns || isAdmin) && (
+        <div style={{ position: 'fixed', bottom: 'max(16px, env(safe-area-inset-bottom, 0px))', right: 16, zIndex: 100, display: 'flex', flexDirection: 'column', gap: 4 }}>
+          {/* Auth button */}
+          {!authDid ? (
+            <div style={{ padding: '4px 8px', background: 'rgba(255,255,255,0.1)', border: '1px solid rgba(255,255,255,0.2)', borderRadius: '4px', display: 'flex', alignItems: 'center', gap: 6, cursor: 'pointer' }}
+              onClick={() => setShowLogin(!showLogin)}>
+              <img src={`${BASE_URL}icon/bluesky.svg`} alt="login" style={{ width: 14, height: 14, filter: 'brightness(0) invert(1)', opacity: 0.6 }} />
+              <span style={{ color: 'rgba(255,255,255,0.5)', fontSize: '11px', fontFamily: 'monospace' }}>login</span>
+            </div>
+          ) : (
+            <div style={{ padding: '4px 8px', background: 'rgba(255,255,255,0.1)', border: '1px solid rgba(255,255,255,0.2)', borderRadius: '4px', display: 'flex', alignItems: 'center', gap: 6, cursor: 'pointer' }}
+              onClick={handleSave}>
+              <img src={`${BASE_URL}icon/bluesky.svg`} alt="save" style={{ width: 14, height: 14, filter: 'brightness(0) invert(1)', opacity: 0.6 }} />
+              <span style={{ color: 'rgba(255,255,255,0.5)', fontSize: '11px', fontFamily: 'monospace' }}>
+                {saveStatus === 'saving' ? 'saving...' : saveStatus === 'saved' ? 'saved!' : saveStatus === 'error' ? 'error' : 'save'}
+              </span>
             </div>
           )}
-          {crowns.silver > 0 && (
-            <div style={{
-              padding: '4px 8px',
-              background: 'rgba(255,255,255,0.1)',
-              border: '1px solid rgba(255,255,255,0.2)',
-              borderRadius: '4px',
-              display: 'flex', alignItems: 'center', gap: 6,
-            }}>
-              <img src={`${import.meta.env.BASE_URL}icon/crown.svg`} alt="silver" style={{ width: 16, height: 16, filter: 'brightness(0) invert(1) brightness(0.9)' }} />
-              <span style={{ color: 'rgba(255,255,255,0.5)', fontSize: '11px', fontFamily: 'monospace' }}>{crowns.silver}</span>
-              <img
-                src={`${import.meta.env.BASE_URL}icon/play.svg`} alt="play"
-                onClick={() => toggleBgm('silver')}
-                style={{ width: 14, height: 14, filter: 'brightness(0) invert(1)', opacity: playingBgm === 'silver' ? 1 : 0.4, cursor: 'pointer' }}
-              />
+
+          {/* Handle link + logout */}
+          {authDid && savedHandle && (
+            <a href={`https://syui.ai/@${savedHandle}/at/vrm`} target="_blank" rel="noopener noreferrer"
+              style={{ padding: '4px 8px', display: 'flex', alignItems: 'center', gap: 6, textDecoration: 'none' }}>
+              <img src={`${BASE_URL}icon/at.svg`} alt="at" style={{ width: 14, height: 14, filter: 'brightness(0) invert(1)', opacity: 0.6 }} />
+              <span style={{ color: 'rgba(255,255,255,0.5)', fontSize: '11px', fontFamily: 'monospace' }}>{savedHandle}</span>
+            </a>
+          )}
+          {authDid && (
+            <div style={{ padding: '4px 8px', background: 'rgba(255,0,0,0.15)', border: '1px solid rgba(255,0,0,0.3)', borderRadius: '4px', display: 'flex', alignItems: 'center', justifyContent: 'center', cursor: 'pointer' }}
+              onClick={handleLogout}>
+              <span style={{ color: 'rgba(255,100,100,0.6)', fontSize: '10px', fontFamily: 'monospace' }}>logout</span>
             </div>
           )}
-          {crowns.bronze > 0 && (
-            <div style={{
-              padding: '4px 8px',
-              background: 'rgba(255,255,255,0.1)',
-              border: '1px solid rgba(255,255,255,0.2)',
-              borderRadius: '4px',
-              display: 'flex', alignItems: 'center', gap: 6,
-            }}>
-              <img src={`${import.meta.env.BASE_URL}icon/crown.svg`} alt="bronze" style={{ width: 16, height: 16, filter: 'brightness(0) invert(1) sepia(1) saturate(10) hue-rotate(90deg)' }} />
-              <span style={{ color: 'rgba(255,255,255,0.5)', fontSize: '11px', fontFamily: 'monospace' }}>{crowns.bronze}</span>
-              <img
-                src={`${import.meta.env.BASE_URL}icon/play.svg`} alt="play"
-                onClick={() => toggleBgm('bronze')}
-                style={{ width: 14, height: 14, filter: 'brightness(0) invert(1)', opacity: playingBgm === 'bronze' ? 1 : 0.4, cursor: 'pointer' }}
+
+          {/* Login dialog */}
+          {showLogin && !authDid && (
+            <div style={{ padding: '8px', background: 'rgba(0,0,0,0.8)', border: '1px solid rgba(255,255,255,0.2)', borderRadius: '6px', display: 'flex', flexDirection: 'column', gap: 6 }}>
+              <input
+                type="text" placeholder="handle.bsky.social" value={handleInput}
+                onChange={e => setHandleInput(e.target.value)}
+                onKeyDown={e => { e.stopPropagation(); if (e.key === 'Enter') handleLogin(); }}
+                style={{ background: 'rgba(255,255,255,0.1)', border: '1px solid rgba(255,255,255,0.2)', borderRadius: '4px', color: '#fff', fontSize: '11px', fontFamily: 'monospace', padding: '4px 8px', outline: 'none' }}
               />
+              <button onClick={handleLogin} disabled={authLoading}
+                style={{ padding: '4px 8px', background: 'rgba(0,120,215,0.6)', color: '#fff', border: 'none', borderRadius: '4px', cursor: authLoading ? 'wait' : 'pointer', fontSize: '11px', fontFamily: 'monospace' }}>
+                {authLoading ? 'redirecting...' : 'login'}
+              </button>
             </div>
           )}
+
+          {/* Crowns */}
+          {['gold', 'silver', 'bronze'].map(tier => (
+            <CrownRow key={tier} tier={tier} score={crowns[tier]} filter={CROWN_FILTERS[tier]}
+              toggleBgm={toggleBgm} playing={playingBgm === tier} />
+          ))}
         </div>
       )}
 
-      {/* Admin controls */}
+      {/* Admin */}
       {isAdmin && !isNasa && (
         <div style={{ position: 'absolute', top: 16, left: 16, zIndex: 2, display: 'flex', gap: 8, alignItems: 'center' }}>
+          <img src={`${BASE_URL}icon/ai.svg`} alt="admin" style={{ width: 24, height: 24, opacity: 0.6 }} />
           <button style={btnStyle} onClick={doTeleport}>Teleport</button>
-          <button style={btnStyle} onClick={doSkill}>Skill</button>
-          <span style={{ color: '#0f0', fontSize: '12px', marginLeft: 4 }}>ADMIN</span>
         </div>
       )}
     </div>
diff --git a/src/lib/auth.js b/src/lib/auth.js
new file mode 100644
index 0000000..9ba8918
--- /dev/null
+++ b/src/lib/auth.js
@@ -0,0 +1,126 @@
+import { BrowserOAuthClient } from '@atproto/oauth-client-browser'
+import { Agent } from '@atproto/api'
+
+let oauthClient = null
+let agent = null
+let sessionDid = null
+
+const COLLECTION = 'ai.syui.vrm'
+
+function getClientId() {
+  const host = window.location.host
+  if (host.includes('localhost') || host.includes('127.0.0.1')) {
+    const port = window.location.port || '5173'
+    const redirectUri = `http://127.0.0.1:${port}/`
+    return `http://localhost?redirect_uri=${encodeURIComponent(redirectUri)}&scope=${encodeURIComponent('atproto transition:generic')}`
+  }
+  return `${window.location.origin}/client-metadata.json`
+}
+
+async function initOAuthClient() {
+  if (oauthClient) return oauthClient
+  const client = await BrowserOAuthClient.load({
+    clientId: getClientId(),
+    handleResolver: 'https://bsky.social',
+    plcDirectoryUrl: 'https://plc.directory',
+  })
+  oauthClient = client
+  return client
+}
+
+export async function login(handle) {
+  const client = await initOAuthClient()
+  await client.signIn(handle, { scope: 'atproto transition:generic' })
+}
+
+export async function initSession() {
+  try {
+    const client = await initOAuthClient()
+    const result = await client.init()
+    if (!result?.session) return null
+
+    sessionDid = result.session.did
+    agent = new Agent(result.session)
+
+    // Clean up OAuth params from URL
+    const params = new URLSearchParams(window.location.search)
+    if (params.has('code') || params.has('state') || params.has('iss')) {
+      window.history.replaceState({}, '', window.location.pathname)
+    }
+    return sessionDid
+  } catch (e) {
+    console.error('OAuth init error:', e)
+    oauthClient = null
+    return null
+  }
+}
+
+export function isLoggedIn() { return sessionDid !== null }
+export function getAgent() { return agent }
+export function getDid() { return sessionDid }
+
+export async function logout() {
+  sessionDid = null
+  agent = null
+  oauthClient = null
+  sessionStorage.clear()
+  localStorage.clear()
+  try {
+    const databases = await indexedDB.databases()
+    for (const db of databases) { if (db.name) indexedDB.deleteDatabase(db.name) }
+  } catch { /* not supported */ }
+}
+
+export async function getHandle() {
+  if (!agent) return null
+  try {
+    const profile = await agent.getProfile({ actor: sessionDid })
+    return profile.data.handle
+  } catch { return null }
+}
+
+export async function saveScore(crowns) {
+  if (!agent) return null
+
+  const now = new Date().toISOString()
+  const CROWN_MAP = { gold: 1, silver: 2, bronze: 3 }
+  const item = Object.entries(CROWN_MAP)
+    .filter(([tier]) => crowns[tier])
+    .map(([tier, id]) => ({ id, cp: crowns[tier], cid: `${tier}_${Date.now()}` }))
+
+  if (item.length === 0) {
+    item.push({ id: 0, cp: 0, cid: `none_${Date.now()}` })
+  }
+
+  // Fetch existing record to preserve cids and createdAt
+  let existingItems = []
+  let existingCreatedAt = null
+  try {
+    const existing = await agent.com.atproto.repo.getRecord({
+      repo: agent.assertDid, collection: COLLECTION, rkey: 'self',
+    })
+    if (existing.data.value?.item) existingItems = existing.data.value.item
+    if (existing.data.value?.createdAt) existingCreatedAt = existing.data.value.createdAt
+  } catch { /* No existing record */ }
+
+  // Merge: keep existing cid for same id
+  const merged = item.map(newItem => {
+    const existing = existingItems.find(e => e.id === newItem.id)
+    return existing || newItem
+  })
+
+  const result = await agent.com.atproto.repo.putRecord({
+    repo: agent.assertDid,
+    collection: COLLECTION,
+    rkey: 'self',
+    record: {
+      $type: COLLECTION,
+      item: merged,
+      createdAt: existingCreatedAt || now,
+      updatedAt: now,
+    },
+  })
+
+  const handle = await getHandle()
+  return { uri: result.data.uri, cid: result.data.cid, handle }
+}
diff --git a/vite.config.ts b/vite.config.ts
index 9c27dc5..8b2f72a 100644
--- a/vite.config.ts
+++ b/vite.config.ts
@@ -4,4 +4,7 @@ import react from '@vitejs/plugin-react'
 export default defineConfig({
   base: '/',
   plugins: [react()],
+  server: {
+    host: '127.0.0.1',
+  },
 })