.guide-article[data-astro-cid-ngusa5im]{max-width:800px;margin:0 auto;padding:40px 0 80px}.guide-header[data-astro-cid-ngusa5im]{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.back-link[data-astro-cid-ngusa5im]{color:var(--primary);font-size:1rem}.read-time[data-astro-cid-ngusa5im]{background:var(--bg-white);padding:6px 14px;border-radius:20px;font-size:.9rem;color:var(--text-muted);border:1px solid var(--border)}h1[data-astro-cid-ngusa5im]{font-size:2.5rem;color:var(--text-dark);margin-bottom:25px;line-height:1.2}.intro[data-astro-cid-ngusa5im]{font-size:1.25rem;color:var(--text-muted);line-height:1.7;margin-bottom:40px}section[data-astro-cid-ngusa5im]{margin-bottom:50px}section[data-astro-cid-ngusa5im] h2[data-astro-cid-ngusa5im]{font-size:1.8rem;color:var(--primary);margin-bottom:25px;padding-bottom:10px;border-bottom:2px solid var(--border)}section[data-astro-cid-ngusa5im] p[data-astro-cid-ngusa5im]{font-size:1.1rem;line-height:1.7;color:var(--text-muted);margin-bottom:15px}.settings-grid[data-astro-cid-ngusa5im]{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}.setting-card[data-astro-cid-ngusa5im]{padding:25px;border-radius:10px}.setting-card[data-astro-cid-ngusa5im].iphone{background:#f5f5f7;border:2px solid #1d1d1f}.setting-card[data-astro-cid-ngusa5im].iphone h3[data-astro-cid-ngusa5im],.setting-card[data-astro-cid-ngusa5im].iphone h4[data-astro-cid-ngusa5im]{color:#1d1d1f}.setting-card[data-astro-cid-ngusa5im].android{background:#e8f5e9;border:2px solid #3ddc84}.setting-card[data-astro-cid-ngusa5im].android h3[data-astro-cid-ngusa5im],.setting-card[data-astro-cid-ngusa5im].android h4[data-astro-cid-ngusa5im]{color:#1b5e20}.setting-card[data-astro-cid-ngusa5im] h3[data-astro-cid-ngusa5im]{margin-bottom:15px}.setting-card[data-astro-cid-ngusa5im] h4[data-astro-cid-ngusa5im]{margin-bottom:10px;font-size:1.1rem}.setting-card[data-astro-cid-ngusa5im] ol[data-astro-cid-ngusa5im]{margin:0 0 15px;padding-left:25px}.setting-card[data-astro-cid-ngusa5im] li[data-astro-cid-ngusa5im]{margin-bottom:8px;color:var(--text-muted)}.setting-card[data-astro-cid-ngusa5im] p[data-astro-cid-ngusa5im]{margin:0 0 10px;font-size:.95rem}.extra-tip[data-astro-cid-ngusa5im]{font-size:.9rem;font-style:italic;color:var(--text-muted);border-top:1px solid rgba(0,0,0,.1);padding-top:15px;margin-top:15px}.brightness-info[data-astro-cid-ngusa5im]{display:flex;flex-direction:column;gap:20px}.quick-method[data-astro-cid-ngusa5im],.auto-brightness[data-astro-cid-ngusa5im]{background:var(--bg-white);padding:25px;border-radius:10px;border:1px solid var(--border)}.quick-method[data-astro-cid-ngusa5im] h3[data-astro-cid-ngusa5im],.auto-brightness[data-astro-cid-ngusa5im] h3[data-astro-cid-ngusa5im]{color:var(--secondary);margin-bottom:10px}.zoom-info[data-astro-cid-ngusa5im] h3[data-astro-cid-ngusa5im]{color:var(--text-dark);margin-bottom:15px}.eye-strain-tips[data-astro-cid-ngusa5im]{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px}.strain-tip[data-astro-cid-ngusa5im]{background:var(--bg-white);padding:25px;border-radius:10px;border-left:4px solid var(--secondary)}.strain-tip[data-astro-cid-ngusa5im] h3[data-astro-cid-ngusa5im]{color:var(--text-dark);margin-bottom:10px}.strain-tip[data-astro-cid-ngusa5im] p[data-astro-cid-ngusa5im]{margin:0 0 10px;font-size:.95rem}.features-list[data-astro-cid-ngusa5im]{display:flex;flex-direction:column;gap:20px}.feature[data-astro-cid-ngusa5im]{background:var(--bg-white);padding:25px;border-radius:10px;border:1px solid var(--border)}.feature[data-astro-cid-ngusa5im] h3[data-astro-cid-ngusa5im]{color:var(--primary);margin-bottom:10px}.feature[data-astro-cid-ngusa5im] p[data-astro-cid-ngusa5im]{margin:0 0 10px;font-size:.95rem}.remember-box[data-astro-cid-ngusa5im]{background:var(--secondary);color:#fff;padding:35px;border-radius:12px;margin:50px 0}.remember-box[data-astro-cid-ngusa5im] h2[data-astro-cid-ngusa5im]{color:#fff;border-bottom-color:#ffffff4d;margin-bottom:20px}.remember-box[data-astro-cid-ngusa5im] ul[data-astro-cid-ngusa5im]{list-style:none;padding:0;margin:0}.remember-box[data-astro-cid-ngusa5im] li[data-astro-cid-ngusa5im]{padding:10px 0 10px 30px;position:relative;color:#fffffff2;border-bottom:1px solid rgba(255,255,255,.2)}.remember-box[data-astro-cid-ngusa5im] li[data-astro-cid-ngusa5im]:last-child{border-bottom:none}.remember-box[data-astro-cid-ngusa5im] li[data-astro-cid-ngusa5im]:before{content:"✓";position:absolute;left:0;font-weight:700}.next-steps[data-astro-cid-ngusa5im]{background:var(--primary);color:#fff;padding:40px;border-radius:12px}.next-steps[data-astro-cid-ngusa5im] h2[data-astro-cid-ngusa5im]{color:#fff;border-bottom-color:#ffffff4d}.next-steps[data-astro-cid-ngusa5im] p[data-astro-cid-ngusa5im]{color:#ffffffe6}.next-steps[data-astro-cid-ngusa5im] h3[data-astro-cid-ngusa5im]{color:#fff;margin-top:30px;font-size:1.2rem}.next-steps[data-astro-cid-ngusa5im] ul[data-astro-cid-ngusa5im]{list-style:none;padding:0}.next-steps[data-astro-cid-ngusa5im] li[data-astro-cid-ngusa5im]{margin-bottom:10px}.next-steps[data-astro-cid-ngusa5im] a[data-astro-cid-ngusa5im]{color:#fff;text-decoration:underline;font-size:1.1rem}@media (max-width: 768px){h1[data-astro-cid-ngusa5im]{font-size:2rem}.guide-header[data-astro-cid-ngusa5im]{flex-direction:column;align-items:flex-start;gap:10px}}