:root{--color-primary: #111827;--color-primary-soft: #1f2937;--color-accent: #6257ff;--color-accent-2: #ff3d71;--color-success: #16a34a;--color-warning: #f59e0b;--color-danger: #ef4444;--color-bg: #f5f7fb;--color-card: #ffffff;--color-text: #0f172a;--color-text-secondary: #64748b;--color-text-light: #94a3b8;--color-border: #e2e8f0;--radius: 18px;--radius-lg: 26px;--shadow: 0 16px 40px rgba(15, 23, 42, .08);--shadow-strong: 0 24px 70px rgba(15, 23, 42, .18);--font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "PingFang SC", "Microsoft YaHei", Arial, sans-serif}*{box-sizing:border-box;margin:0;padding:0}html,body,#app{min-height:100%;overflow-x:hidden}body{font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;-webkit-tap-highlight-color:transparent}button,input,textarea{font-family:inherit}button{cursor:pointer}button:disabled{cursor:not-allowed;opacity:.55}.page-shell{min-height:100dvh;max-width:520px;margin:0 auto;background:radial-gradient(circle at 20% -10%,#e9e7ff 0,transparent 34%),linear-gradient(180deg,#f8fafc 0%,#eef2f7 100%)}.nav-bar{position:sticky;top:0;z-index:40;height:48px;display:flex;align-items:center;padding:calc(env(safe-area-inset-top)/5) 16px 0;background:rgba(248,250,252,.86);border-bottom:1px solid rgba(148,163,184,.16);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.nav-bar .back{width:34px;height:34px;border-radius:14px;display:inline-flex;align-items:center;justify-content:center;color:#0f172a;background:rgba(255,255,255,.75);border:1px solid rgba(226,232,240,.9)}.nav-bar .title{flex:1;text-align:center;font-size:16px;font-weight:900}.nav-placeholder{width:34px}.btn,.primary-action,.secondary-action{display:inline-flex;align-items:center;justify-content:center;border:none;border-radius:16px;font-weight:900}.btn-primary{color:#fff;background:linear-gradient(135deg,#111827,#6257ff);box-shadow:0 14px 24px #6257ff38}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--color-text-secondary);text-align:center}.empty-icon{width:62px;height:62px;border-radius:22px;display:flex;align-items:center;justify-content:center;background:#fff;box-shadow:var(--shadow);font-size:30px}.spinner{width:28px;height:28px;border:3px solid rgba(99,102,241,.18);border-top-color:#6257ff;border-radius:50%;animation:spin .75s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.toast{position:fixed;top:50%;left:50%;transform:translate(-50%,-50%);z-index:10000;max-width:calc(100vw - 48px);padding:12px 20px;border-radius:16px;background:rgba(15,23,42,.9);color:#fff;font-size:14px;font-weight:700;line-height:1.5;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}