:root{--bg: #fdfcfb;--paper: #f0ebe3;--ink: #3d2b1f;--primary: #a3734f;--accent: #c8970a;--shadow: 0 10px 30px rgba(163, 115, 79, .12);--serif: "Source Han Serif SC", "Noto Serif SC", serif}body{background:var(--bg);color:var(--ink);margin:0;font-family:sans-serif}.app-container{max-width:500px;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}.app-header{padding:20px;display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;background:#fdfcfbe6;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);z-index:10}.app-header h1{font-family:var(--serif);font-size:20px;margin:0}.sync-badge{font-size:11px;background:var(--paper);padding:4px 12px;border-radius:20px;display:flex;align-items:center;gap:4px;color:var(--primary)}.syncing{animation:pulse 1.5s infinite}.hero-card{background:var(--primary);color:#fff;padding:30px;border-radius:30px;margin:20px;box-shadow:var(--shadow)}.hero-card h2{font-family:var(--serif);margin:0 0 10px}.history-list{padding:0 20px}.history-item{background:#fff;padding:12px 16px;border-radius:15px;margin-bottom:8px;font-size:13px;border-left:3px solid var(--primary);box-shadow:0 2px 8px #00000005}.tip-card{background:#fff;margin:15px 20px;padding:20px;border-radius:25px;display:flex;align-items:center;gap:15px;box-shadow:var(--shadow);cursor:pointer;transition:transform .2s}.tip-card:active{transform:scale(.98)}.tip-icon-box{font-size:30px;background:var(--paper);width:60px;height:60px;display:flex;align-items:center;justify-content:center;border-radius:20px}.tip-info{flex:1}.tip-info h3{margin:0 0 5px;font-size:18px}.tip-info p{margin:0;font-size:13px;color:#888}.interactive-box{display:flex;flex-direction:column;align-items:center;padding:40px 0;gap:30px}.action-btn{background:var(--primary);color:#fff;border:none;padding:12px 30px;border-radius:25px;font-weight:700;cursor:pointer;box-shadow:0 4px 15px #a3734f4d}.action-btn:disabled{opacity:.6}.coin-wrapper{width:100px;height:100px;position:relative;transform-style:preserve-3d;transition:transform .6s cubic-bezier(.4,0,.2,1)}.coin-face{position:absolute;width:100%;height:100%;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:40px;font-weight:700;color:var(--primary);border:4px solid var(--primary);background:#f9f3e9;backface-visibility:hidden}.tails{transform:rotateY(180deg)}.flipping{animation:flip-anim 1s ease-out}@keyframes flip-anim{0%{transform:rotateY(0) translateY(0)}50%{transform:rotateY(720deg) translateY(-100px)}to{transform:rotateY(1440deg) translateY(0)}}.dice{width:80px;height:80px}.rolling{animation:shake .1s infinite}@keyframes shake{0%{transform:translate(2px,2px)}50%{transform:translate(-2px,-2px)}to{transform:translate(2px,-2px)}}.dice-svg circle{fill:var(--ink)}.random-num{font-size:60px;font-weight:700;font-family:var(--serif);color:var(--primary)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;display:flex;align-items:flex-end;z-index:100}.modal-content{background:var(--bg);width:100%;border-radius:30px 30px 0 0;padding:30px;max-height:80vh;overflow-y:auto}.modal-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.modal-header button{background:var(--paper);border:none;padding:8px 15px;border-radius:10px}.tip-desc{font-size:13px;color:#888;text-align:center;line-height:1.6}.bottom-nav{position:fixed;bottom:0;width:100%;max-width:500px;background:#fff;height:70px;display:flex;justify-content:space-around;align-items:center;border-top:1px solid #eee}.bottom-nav button{background:none;border:none;display:flex;flex-direction:column;align-items:center;gap:4px;font-size:11px;color:#aaa}.bottom-nav button.active{color:var(--primary)}@keyframes pulse{0%{opacity:1}50%{opacity:.5}to{opacity:1}}