:root{--primary:#4f46e5;--primary-hover:#4338ca;--primary-light:#eeebff;--accent:#ec4899;--bg-page:#f8fafc;--bg-card:#fff;--border:#e2e8f0;--text-main:#0f172a;--text-muted:#64748b;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a;--radius-sm:6px;--radius-md:12px;--radius-lg:16px;--font-sans:"Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);color:var(--text-main);background-color:var(--bg-page);padding-bottom:60px;line-height:1.6}.page-header{background-color:var(--bg-card);border-bottom:1px solid var(--border);z-index:100;box-shadow:var(--shadow-sm);position:sticky;top:0}.header-content{justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto;padding:12px 24px;display:flex}.back-link{color:var(--primary);border-radius:var(--radius-sm);background-color:var(--primary-light);align-items:center;gap:8px;padding:8px 16px;font-size:14px;font-weight:600;text-decoration:none;transition:all .2s;display:inline-flex}.back-link:hover{background-color:var(--primary);color:#fff;transform:translate(-2px)}.icon-back{width:16px;height:16px}.site-tagline{color:var(--text-muted);font-size:13px;font-weight:500}.article-container{max-width:1200px;margin:40px auto 0;padding:0 24px}.article-card{background-color:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);margin-bottom:30px;padding:40px}h1{text-align:center;background:linear-gradient(135deg, var(--primary), var(--accent));-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:24px;font-size:28px;font-weight:800;line-height:1.3}h2{border-left:4px solid var(--primary);color:var(--text-main);margin-top:36px;margin-bottom:16px;padding-left:12px;font-size:20px;font-weight:700}h3{color:var(--text-main);margin-top:24px;margin-bottom:12px;font-size:16px;font-weight:700}p{color:#334155;text-align:justify;margin-bottom:16px;font-size:15px}.callout{border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#166534;background-color:#f0fdf4;border-left:4px solid #16a34a;margin:20px 0;padding:16px 20px;font-size:14.5px}.callout-warning{color:#92400e;background-color:#fffbeb;border-left:4px solid #d97706}.callout h4{margin-bottom:6px;font-weight:700}.step-list{flex-direction:column;gap:20px;margin:24px 0;display:flex}.step-item{border:1px solid var(--border);border-radius:var(--radius-md);background:#f8fafc;padding:20px;position:relative}.step-num{background-color:var(--primary);color:#fff;vertical-align:middle;border-radius:50%;justify-content:center;align-items:center;width:28px;height:28px;margin-right:10px;font-size:13.5px;font-weight:700;display:inline-flex}.step-title{vertical-align:middle;color:var(--text-main);font-size:16px;font-weight:700;display:inline-block}.step-content{color:#475569;margin-top:10px;padding-left:38px;font-size:14.5px}ul{margin-bottom:16px;padding-left:20px}li{color:#334155;margin-bottom:8px;font-size:14.5px}strong{color:var(--text-main)}code{color:var(--primary);background-color:#f1f5f9;border-radius:4px;padding:2px 6px;font-family:Consolas,Monaco,monospace;font-size:.9em}.link-btn{color:var(--primary);border-bottom:1.5px solid #0000;font-weight:600;text-decoration:none;transition:all .2s}.link-btn:hover{border-bottom-color:var(--primary)}.google-ad-box{border:1px dashed var(--border);border-radius:var(--radius-sm);text-align:center;background-color:#fafafa;flex-direction:column;justify-content:center;min-height:100px;margin:30px 0;padding:12px;display:flex}.google-ad-tip{color:#94a3b8;text-transform:uppercase;letter-spacing:.05em;margin-bottom:8px;font-size:11px}.page-footer{text-align:center;color:var(--text-muted);margin-top:30px;font-size:13px}.page-footer a{color:var(--primary);margin:0 6px;text-decoration:none}.page-footer a:hover{text-decoration:underline}@media (width<=768px){.article-card{padding:24px 16px}h1{font-size:22px}h2{font-size:18px}.step-content{padding-left:0}.header-content{padding:10px 16px}}