:root{--terminal-bg:#f4f6fb;--terminal-border:#e2e8f0;--text-primary:#1e293b;--text-secondary:#64748b;--accent-blue:#4f46e5;--accent-blue-hover:#4338ca;--border-radius:12px;--window-dot-size:12px}
*{margin:0;padding:0;box-sizing:border-box;font-family:'PingFang SC','Microsoft YaHei',Inter,sans-serif}
::-webkit-scrollbar{display:none}
html,body{height:100%;background:var(--terminal-bg);color:var(--text-primary)}
.terminal-container{width:100vw;height:100vh;background:var(--terminal-bg);overflow:hidden;display:flex;flex-direction:column}
.window-controls{height:48px;background:#fff;border-bottom:1px solid var(--terminal-border);padding:0 16px;display:flex;align-items:center;gap:10px;width:100%;box-shadow:0 1px 0 rgba(15,23,42,.04)}
.window-dot{width:var(--window-dot-size);height:var(--window-dot-size);border-radius:50%;display:inline-block;cursor:pointer;transition:transform .2s ease}
.window-dot:hover{transform:scale(1.12)}
.dot-red{background-color:#ff5f58}
.dot-yellow{background-color:#ffbd2e}
.dot-green{background-color:#19c37d}
.brand-name{font-size:13px;font-weight:600;color:var(--text-primary);margin-left:6px;white-space:nowrap}
.nav-container{display:flex;align-items:center;overflow-x:auto;flex-grow:1;padding:0 8px;scrollbar-width:none;justify-content:flex-end}
.nav-container::-webkit-scrollbar{display:none}
.nav-item{padding:7px 16px;margin:0 3px;font-size:.9rem;color:var(--text-primary);text-decoration:none;white-space:nowrap;border-radius:999px;transition:all .2s}
.nav-item:hover{background-color:#eef2ff;color:var(--accent-blue)}
.nav-item.active{background-color:var(--accent-blue);color:#fff}
.content-frame-container{flex-grow:1;position:relative;overflow:hidden;background:#f8fafc}
#contentFrame{width:100%;height:100%;border:none;background-color:#fff;display:none}
.initial-content{width:100%;height:100%;overflow:auto;padding:20px;display:flex;flex-direction:column;justify-content:center;align-items:center}
footer{text-align:center;padding:12px;border-top:1px solid var(--terminal-border);font-size:.82rem;color:var(--text-secondary);background:#fff;line-height:1.7}
@media (max-width:768px){body{padding:0}
.terminal-container{width:100vw;height:100vh}
.window-controls{padding:0 10px;height:44px}
.brand-name{display:none}
.nav-item{padding:6px 12px;font-size:.85rem;margin:0 2px}
}
.copy-toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background-color:rgba(15,23,42,.82);color:#fff;padding:8px 15px;border-radius:8px;font-size:.9rem;opacity:0;transition:opacity .3s ease;pointer-events:none}
.copy-toast.show{opacity:1}
*{-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}
.nav-item{-webkit-touch-callout:none;touch-action:manipulation}
.security-toast{position:fixed;top:20px;left:50%;transform:translateX(-50%);padding:8px 16px;background:rgba(239,68,68,.92);color:#fff;border-radius:8px;z-index:9999;display:none;transition:opacity .3s}
.visit-popup{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(15,23,42,.55);z-index:10000;display:none;justify-content:center;align-items:center;backdrop-filter:blur(6px)}
.popup-content{background:#fff;padding:32px 28px 26px;border-radius:16px;width:90%;max-width:420px;text-align:center;box-shadow:0 24px 60px rgba(15,23,42,.2)}
.popup-icon{width:48px;height:48px;margin:0 auto 12px;border-radius:14px;background:#eef2ff;color:var(--accent-blue);display:flex;align-items:center;justify-content:center;font-size:18px}
.popup-content h3{margin:0;color:#0f172a;font-size:1.15rem}
.popup-content p{color:#64748b;line-height:1.7;margin:14px 0 18px;font-size:.95rem;white-space:pre-wrap}
.popup-close{background:var(--accent-blue);color:#fff;border:none;padding:10px 28px;border-radius:999px;cursor:pointer;font-size:15px;transition:background .2s}
.popup-close:hover{background:var(--accent-blue-hover)}