@font-face{font-family:'Inter';font-style:normal;font-weight:400;font-display:swap;src:url('fonts/inter-v20-latin-regular.woff2') format('woff2')}@font-face{font-family:'Inter';font-style:normal;font-weight:500;font-display:swap;src:url('fonts/inter-v20-latin-500.woff2') format('woff2')}@font-face{font-family:'Inter';font-style:normal;font-weight:600;font-display:swap;src:url('fonts/inter-v20-latin-600.woff2') format('woff2')}@font-face{font-family:'Inter';font-style:normal;font-weight:700;font-display:swap;src:url('fonts/inter-v20-latin-700.woff2') format('woff2')}@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:600;font-display:swap;src:url('fonts/plus-jakarta-sans-v12-latin-600.woff2') format('woff2')}@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:700;font-display:swap;src:url('fonts/plus-jakarta-sans-v12-latin-700.woff2') format('woff2')}@font-face{font-family:'Plus Jakarta Sans';font-style:normal;font-weight:800;font-display:swap;src:url('fonts/plus-jakarta-sans-v12-latin-800.woff2') format('woff2')}:root{--primary:#1a73e8;--primary-hover:#1557b0;--primary-light:#e8f0fe;--secondary:#5f6368;--secondary-hover:#3c4043;--success:#34a853;--success-hover:#2d8e47;--success-light:#e6f4ea;--warning:#fbbc04;--warning-light:#fef7e0;--bg-main:#f8fafd;--surface:#ffffff;--surface-hover:#f1f5f9;--border-color:#e2e8f0;--border-focus:#1a73e8;--text-main:#1f2937;--text-muted:#64748b;--text-inverse:#ffffff;--shadow-sm:0 2px 4px rgba(0,0,0,0.04);--shadow-md:0 6px 16px rgba(0,0,0,0.08);--shadow-lg:0 12px 32px rgba(0,0,0,0.12);--radius-sm:8px;--radius-md:12px;--radius-lg:18px;--radius-full:9999px;--transition-fast:0.15s ease;--transition-normal:0.25s cubic-bezier(0.4,0,0.2,1);--font-heading:'Plus Jakarta Sans',-apple-system,BlinkMacSystemFont,sans-serif;--font-body:'Inter',-apple-system,BlinkMacSystemFont,sans-serif}[data-theme="dark"]{--primary:#8ab4f8;--primary-hover:#aecbfa;--primary-light:rgba(138,180,248,0.15);--secondary:#9aa0a6;--secondary-hover:#bdc1c6;--success:#81c995;--success-light:rgba(129,201,149,0.15);--warning:#fde293;--warning-light:rgba(253,226,147,0.15);--bg-main:#0f172a;--surface:#1e293b;--surface-hover:#334155;--border-color:#334155;--border-focus:#8ab4f8;--text-main:#f1f5f9;--text-muted:#94a3b8;--text-inverse:#0f172a;--shadow-sm:0 2px 4px rgba(0,0,0,0.3);--shadow-md:0 6px 16px rgba(0,0,0,0.4);--shadow-lg:0 12px 32px rgba(0,0,0,0.5)}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}html,body{overflow-x:hidden}body{font-family:var(--font-body);background-color:var(--bg-main);color:var(--text-main);line-height:1.6;min-height:100vh;display:flex;flex-direction:column;transition:background-color var(--transition-normal),color var(--transition-normal)}.container{max-width:960px;margin:0 auto;padding:0 1.25rem;width:100%}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{font-family:inherit;cursor:pointer;border:none;background:none}.navbar{position:sticky;top:0;z-index:100;background-color:rgba(255,255,255,0.85);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-color);transition:background-color var(--transition-normal),border-color var(--transition-normal)}[data-theme="dark"] .navbar{background-color:rgba(30,41,59,0.85)}.nav-container{display:flex;align-items:center;justify-content:space-between;height:64px}.brand{display:flex;align-items:center;gap:0.75rem}.brand-icon{width:40px;height:40px;background:linear-gradient(135deg,#1a73e8,#4285f4);color:#ffffff;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;box-shadow:0 4px 10px rgba(26,115,232,0.25)}.brand-text{display:flex;flex-direction:column}.brand-title{font-family:var(--font-heading);font-weight:700;font-size:1.05rem;color:var(--text-main);line-height:1.2}.brand-subtitle{font-size:0.75rem;color:var(--text-muted)}.nav-actions{display:flex;align-items:center;gap:0.5rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:0.5rem;padding:0.6rem 1.2rem;font-size:0.925rem;font-weight:600;border-radius:var(--radius-md);transition:all var(--transition-fast)}.btn-primary{background-color:var(--primary);color:#ffffff}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-1px);box-shadow:0 4px 12px rgba(26,115,232,0.3)}[data-theme="dark"] .btn-primary{color:#0f172a}.btn-secondary{background-color:var(--surface);color:var(--text-main);border:1px solid var(--border-color)}.btn-secondary:hover:not(:disabled){background-color:var(--surface-hover)}.btn-secondary:disabled{opacity:0.5;cursor:not-allowed}.btn-success{background-color:var(--success);color:#ffffff}.btn-success:hover{background-color:var(--success-hover);box-shadow:0 4px 12px rgba(52,168,83,0.3)}.btn-ghost{color:var(--text-muted);padding:0.5rem 0.75rem}.btn-ghost:hover{background-color:var(--surface-hover);color:var(--text-main)}.btn-icon{width:40px;height:40px;padding:0;border-radius:var(--radius-sm);color:var(--text-muted)}.btn-icon:hover{background-color:var(--surface-hover);color:var(--text-main)}.icon-sun{display:block}.icon-moon{display:none}[data-theme="dark"] .icon-sun{display:none}[data-theme="dark"] .icon-moon{display:block}.hero-section{padding:2rem 0 1.5rem}.hero-card{background-color:var(--surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-md);text-align:center;transition:background-color var(--transition-normal),border-color var(--transition-normal)}.hero-badge{display:inline-flex;align-items:center;gap:0.5rem;background-color:var(--primary-light);color:var(--primary);font-size:0.825rem;font-weight:600;padding:0.35rem 0.85rem;border-radius:var(--radius-full);margin-bottom:1rem}.pulse-dot{width:8px;height:8px;background-color:var(--primary);border-radius:50%;box-shadow:0 0 0 0 rgba(26,115,232,0.4);animation:pulse 2s infinite}@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(26,115,232,0.4)}70%{box-shadow:0 0 0 8px rgba(26,115,232,0)}100%{box-shadow:0 0 0 0 rgba(26,115,232,0)}}.hero-title{font-family:var(--font-heading);font-size:1.75rem;font-weight:800;color:var(--text-main);margin-bottom:0.5rem;line-height:1.25}.hero-description{color:var(--text-muted);font-size:0.975rem;max-width:620px;margin:0 auto 1.5rem}.progress-container{max-width:600px;margin:0 auto 2rem}.progress-header{display:flex;justify-content:space-between;font-size:0.875rem;margin-bottom:0.5rem;color:var(--text-muted)}.progress-bar-bg{width:100%;height:10px;background-color:var(--surface-hover);border-radius:var(--radius-full);overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,#1a73e8,#34a853);border-radius:var(--radius-full);transition:width 0.4s ease}.stepper-nav{display:flex;align-items:center;justify-content:center;gap:0.5rem;overflow-x:auto;padding:0.5rem 0;width:100%;box-sizing:border-box;-webkit-overflow-scrolling:touch}.step-tab{display:flex;align-items:center;gap:0.5rem;padding:0.5rem 0.85rem;border-radius:var(--radius-full);background-color:var(--surface-hover);color:var(--text-muted);font-weight:600;font-size:0.85rem;transition:all var(--transition-fast)}.step-tab:hover{background-color:var(--primary-light);color:var(--primary)}.step-tab.active{background-color:var(--primary);color:#ffffff}[data-theme="dark"] .step-tab.active{color:#0f172a}.step-tab.completed .step-num{background-color:var(--success);color:#ffffff}.step-num{width:22px;height:22px;border-radius:50%;background-color:rgba(0,0,0,0.1);display:inline-flex;align-items:center;justify-content:center;font-size:0.75rem}.step-line{height:2px;width:24px;background-color:var(--border-color);flex-shrink:0}.main-content{margin-bottom:3rem}.step-card{display:none;background-color:var(--surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-md);margin-bottom:1.5rem;animation:fadeIn 0.3s ease-out}.step-card.active{display:block}body.mode-all .step-card{display:block !important}body.mode-all .stepper-nav,body.mode-all .progress-container{display:none}@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.step-header{margin-bottom:1.5rem}.step-tag{display:inline-block;font-size:0.8rem;font-weight:700;text-transform:uppercase;letter-spacing:0.05em;color:var(--primary);margin-bottom:0.25rem}.step-title{font-family:var(--font-heading);font-size:1.5rem;font-weight:700;color:var(--text-main)}.step-body{display:grid;grid-template-columns:1fr;gap:1.5rem}@media (min-width:768px){.step-body{grid-template-columns:1fr 1fr;align-items:center}}.checklist{list-style:none;display:flex;flex-direction:column;gap:1rem;margin-bottom:1.5rem}.checklist-item{background-color:var(--bg-main);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:0.9rem 1.1rem;transition:all var(--transition-fast)}.checklist-item:hover{border-color:var(--primary)}.custom-checkbox{display:flex;align-items:flex-start;gap:0.85rem;cursor:pointer;user-select:none}.custom-checkbox input{position:absolute;opacity:0;cursor:pointer;height:0;width:0}.checkmark{position:relative;top:2px;width:22px;height:22px;border:2px solid var(--border-color);border-radius:6px;background-color:var(--surface);flex-shrink:0;transition:all var(--transition-fast)}.custom-checkbox:hover input ~ .checkmark{border-color:var(--primary)}.custom-checkbox input:checked ~ .checkmark{background-color:var(--success);border-color:var(--success)}.checkmark::after{content:"";position:absolute;display:none;left:6px;top:2px;width:5px;height:10px;border:solid white;border-width:0 2px 2px 0;transform:rotate(45deg)}.custom-checkbox input:checked ~ .checkmark::after{display:block}.check-text{font-size:0.95rem;color:var(--text-main);line-height:1.5}.link-highlight{font-weight:600;display:inline-flex;align-items:center;gap:0.25rem;word-break:break-all}.btn-copy{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:var(--radius-sm);background-color:var(--primary-light);color:var(--primary);border:1px solid var(--border-color);transition:all var(--transition-fast);cursor:pointer;margin:0 0.35rem;vertical-align:middle;padding:0;box-sizing:border-box}.btn-copy:hover{background-color:var(--primary);color:#ffffff}.tip-box{display:flex;gap:0.85rem;padding:1rem;background-color:var(--warning-light);border-left:4px solid var(--warning);border-radius:var(--radius-sm);font-size:0.875rem;color:var(--text-main)}.success-tip{background-color:var(--success-light);border-left-color:var(--success)}.tip-icon{font-size:1.25rem;line-height:1}.step-image-container{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0.5rem;width:100%}.image-wrapper{position:relative;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--border-color);background-color:var(--bg-main);cursor:zoom-in;box-shadow:var(--shadow-sm);transition:transform var(--transition-fast),box-shadow var(--transition-fast);margin:0 auto;width:100%;max-width:520px}.image-wrapper:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.image-wrapper img{width:100%;height:auto;display:block;object-fit:contain}.image-overlay{position:absolute;inset:0;background:rgba(0,0,0,0.25);opacity:0;display:flex;align-items:center;justify-content:center;transition:opacity var(--transition-fast)}.image-wrapper:hover .image-overlay{opacity:1}.zoom-badge{display:inline-flex;align-items:center;gap:0.4rem;background-color:rgba(0,0,0,0.75);color:#ffffff;padding:0.5rem 0.9rem;border-radius:var(--radius-full);font-size:0.825rem;font-weight:600;backdrop-filter:blur(4px)}.image-caption{font-size:0.8rem;color:var(--text-muted);text-align:center;font-style:italic}.step-footer{margin-top:2rem;padding-top:1.25rem;border-top:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between}.thankyou-card{background-color:var(--surface);border:2px solid var(--success);border-radius:var(--radius-lg);padding:3rem 2rem;text-align:center;box-shadow:var(--shadow-lg);animation:scaleUp 0.4s ease-out}@keyframes scaleUp{from{opacity:0;transform:scale(0.95)}to{opacity:1;transform:scale(1)}}.thankyou-icon-wrapper{margin-bottom:1.25rem}.thankyou-icon{width:80px;height:80px;background-color:var(--success-light);color:var(--success);border-radius:50%;display:inline-flex;align-items:center;justify-content:center}.thankyou-title{font-family:var(--font-heading);font-size:2rem;font-weight:800;color:var(--text-main);margin-bottom:0.5rem}.thankyou-subtitle{font-size:1.1rem;color:var(--text-muted);max-width:600px;margin:0 auto 1.5rem}.thankyou-box{background-color:var(--bg-main);border:1px solid var(--border-color);border-radius:var(--radius-md);padding:1.5rem;max-width:540px;margin:0 auto 2rem}.heartfelt-text{font-family:var(--font-heading);font-size:1.15rem;font-weight:700;color:var(--primary);margin-top:0.75rem}.thankyou-actions{display:flex;justify-content:center;gap:1rem;flex-wrap:wrap}.lightbox-modal{position:fixed;inset:0;margin:auto;border:none;background:transparent;padding:1rem;max-width:100vw;max-height:100vh;width:100%;height:100%;outline:none;overflow:auto;box-sizing:border-box}.lightbox-modal[open]{display:flex;align-items:center;justify-content:center}.lightbox-modal::backdrop{position:fixed;inset:0;background:rgba(15,23,42,0.85);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}.lightbox-content{background-color:var(--surface);border-radius:var(--radius-lg);border:1px solid var(--border-color);max-width:min(920px,92vw);max-height:90vh;width:fit-content;display:flex;flex-direction:column;overflow:hidden;box-shadow:var(--shadow-lg);margin:auto}.lightbox-header{display:flex;align-items:center;justify-content:space-between;padding:0.85rem 1.25rem;border-bottom:1px solid var(--border-color);background-color:var(--surface);flex-shrink:0}.lightbox-title{font-family:var(--font-heading);font-size:1.1rem;font-weight:700}.lightbox-close{color:var(--text-muted);border-radius:50%;padding:0.3rem;display:flex;cursor:pointer;background:transparent;border:none}.lightbox-close:hover{background-color:var(--surface-hover);color:var(--text-main)}.lightbox-body{padding:1rem;overflow:auto;display:flex;align-items:center;justify-content:center;text-align:center;background-color:var(--bg-main)}.lightbox-body img{display:block;margin:0 auto;max-width:100%;max-height:75vh;width:auto;height:auto;object-fit:contain;border-radius:var(--radius-sm)}.toast-container{position:fixed;bottom:24px;right:24px;z-index:1000;display:flex;flex-direction:column;gap:0.5rem}.toast{background-color:var(--text-main);color:var(--text-inverse);padding:0.75rem 1.25rem;border-radius:var(--radius-md);font-size:0.875rem;font-weight:600;box-shadow:var(--shadow-lg);display:flex;align-items:center;gap:0.5rem;animation:toastIn 0.3s ease-out}@keyframes toastIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.footer{margin-top:auto;border-top:1px solid var(--border-color);background-color:var(--surface);padding:1.5rem 0;font-size:0.85rem;color:var(--text-muted)}.footer-container{display:flex;flex-direction:column;align-items:center;gap:0.5rem;text-align:center}@media (min-width:640px){.footer-container{flex-direction:row;justify-content:space-between}}.footer-links{display:flex;gap:0.5rem}@media print{.navbar,.nav-actions,.stepper-nav,.step-footer,.thankyou-actions,#theme-toggle-btn{display:none !important}body{background-color:#ffffff;color:#000000}.step-card{display:block !important;break-inside:avoid;box-shadow:none;border:1px solid #ccc;margin-bottom:2rem}.thankyou-card{display:block !important;box-shadow:none}.hero-section{padding:0;margin-bottom:1rem}.hero-card{box-shadow:none;border:none;padding:1rem 0}}.device-switch-banner{background-color:var(--primary-light);border-bottom:1px solid var(--border-color);padding:0.75rem 0;font-size:0.9rem;color:var(--text-main);transition:background-color var(--transition-normal),border-color var(--transition-normal)}.switch-container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:0.5rem}.choice-section{padding:3rem 0;animation:fadeIn 0.3s ease-out}.choice-card{background:var(--surface);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:3rem 2rem;box-shadow:var(--shadow-md);text-align:center;transition:background var(--transition-normal),border-color var(--transition-normal)}.choice-title{font-family:var(--font-heading);font-size:1.8rem;margin-bottom:0.75rem;color:var(--text-main)}.choice-subtitle{color:var(--text-muted);margin-bottom:2.5rem;font-size:1rem}.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:2rem;max-width:720px;margin:0 auto}.choice-btn{background:var(--surface);border:2px solid var(--border-color);border-radius:var(--radius-lg);padding:2rem 1.5rem;cursor:pointer;transition:all var(--transition-normal);display:flex;flex-direction:column;align-items:center;gap:1rem;position:relative;text-align:center}.choice-btn:hover{border-color:var(--primary);background-color:var(--primary-light);transform:translateY(-2px);box-shadow:var(--shadow-md)}.choice-badge{display:none;align-items:center;gap:0.35rem;padding:0.35rem 0.85rem;border-radius:var(--radius-full);font-size:0.775rem;font-weight:700;letter-spacing:0.02em}.choice-badge-recommended{background-color:var(--primary);color:#ffffff;box-shadow:0 2px 8px rgba(26,115,232,0.3)}[data-theme="dark"] .choice-badge-recommended{color:#0f172a}.choice-btn.choice-recommended{border:2px solid var(--primary);background-color:var(--surface);box-shadow:0 8px 24px rgba(26,115,232,0.16);transform:translateY(-2px)}[data-theme="dark"] .choice-btn.choice-recommended{box-shadow:0 8px 24px rgba(138,180,248,0.18)}.choice-btn.choice-recommended .choice-btn-title{color:var(--primary)}.choice-action-hint{font-size:0.85rem;font-weight:700;color:var(--primary);margin-top:0.5rem;display:inline-flex;align-items:center;gap:0.3rem;transition:transform var(--transition-fast)}.choice-btn:hover .choice-action-hint{transform:translateX(4px)}.choice-icon{color:var(--primary);display:flex;align-items:center;justify-content:center;transition:transform var(--transition-normal)}.choice-btn:hover .choice-icon{transform:scale(1.1)}.choice-btn-title{font-family:var(--font-heading);font-weight:700;font-size:1.2rem;color:var(--text-main)}.choice-btn-desc{font-size:0.88rem;color:var(--text-muted);line-height:1.5}@media (max-width:640px){.choice-grid{grid-template-columns:1fr;gap:1.25rem}.choice-card{padding:2rem 1.25rem}}.step-image-grid{display:grid;grid-template-columns:1fr 1fr;gap:1rem}@media (max-width:600px){.step-image-grid{grid-template-columns:1fr}}.btn-sm{padding:0.4rem 0.8rem;font-size:0.8rem}@media print{.device-switch-banner,.choice-section{display:none !important}}.navbar{position:sticky;top:0;z-index:100;background-color:var(--surface);border-bottom:1px solid var(--border-color);box-shadow:var(--shadow-sm);transition:background-color var(--transition-normal),border-color var(--transition-normal)}.nav-container{display:flex;flex-direction:row;align-items:center;justify-content:space-between;height:64px;max-width:960px;margin:0 auto;padding:0 1.25rem}.link-highlight{font-weight:700;color:var(--primary);display:inline-flex;align-items:center;gap:0.5rem;flex-wrap:wrap;word-break:break-all}.progress-header{display:flex;justify-content:space-between;align-items:center;font-size:0.9rem;font-weight:600;margin-bottom:0.5rem;color:var(--text-main) !important}.progress-label{color:var(--text-main) !important}.progress-percent{color:var(--primary);font-weight:700}.step-tab{display:inline-flex;align-items:center;gap:0.5rem;padding:0.5rem 1rem;border-radius:var(--radius-full);background-color:var(--surface-hover);color:var(--text-main) !important;font-weight:600;font-size:0.875rem;border:1px solid var(--border-color);transition:all var(--transition-fast)}.step-tab:hover{background-color:var(--primary-light);color:var(--primary) !important;border-color:var(--primary)}.step-tab.active{background-color:var(--primary) !important;color:#ffffff !important;border-color:var(--primary) !important}.step-tab.active .step-label{color:#ffffff !important}.step-tab.active .step-num{background-color:rgba(255,255,255,0.25) !important;color:#ffffff !important}.step-label{color:inherit !important;font-weight:600}.step-num{width:24px;height:24px;border-radius:50%;background-color:rgba(0,0,0,0.08);color:var(--text-main);display:inline-flex;align-items:center;justify-content:center;font-size:0.75rem;font-weight:700}.store-links{display:inline-flex;gap:0.4rem;margin-top:0.35rem;flex-wrap:wrap;width:100%}.btn-store{display:inline-flex;align-items:center;gap:0.35rem;font-size:0.75rem;font-weight:600;padding:0.25rem 0.6rem;border-radius:var(--radius-sm);background-color:var(--surface-hover);color:var(--text-main);border:1px solid var(--border-color);transition:all var(--transition-fast);text-decoration:none !important}.btn-store:hover{background-color:var(--primary-light);color:var(--primary);border-color:var(--primary)}.choice-subtitle{color:var(--text-muted);margin-bottom:2.75rem !important;font-size:1rem}.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.75rem;max-width:760px;margin:1.5rem auto 0}@media (min-width:769px){#choose-computer-btn{order:1}#choose-gsm-btn{order:2}}@media (max-width:768px){.choice-subtitle{margin-bottom:2rem !important}.choice-grid{grid-template-columns:1fr;gap:1.25rem}#choose-gsm-btn{order:1}#choose-computer-btn{order:2}.stepper-nav{justify-content:flex-start !important;padding:0.5rem 0.25rem;gap:0.35rem;scrollbar-width:none}.stepper-nav::-webkit-scrollbar{display:none}.step-tab{padding:0.4rem 0.65rem;font-size:0.8rem;gap:0.35rem;flex-shrink:0;white-space:nowrap}.step-line{display:none}.image-wrapper{max-width:360px}.step-image-item.is-collapsed .image-wrapper{display:none !important}.step-image-item.is-collapsed{padding:0.25rem 0}.step-image-container.all-collapsed .image-caption{display:none !important}.step-image-container.is-collapsed .image-wrapper,.step-image-container.is-collapsed .step-image-grid,.step-image-container.is-collapsed .image-caption{display:none !important}.step-image-container.is-collapsed{padding:0.25rem 0}}.step-image-item{display:flex;flex-direction:column;align-items:center;width:100%}.btn-toggle-step-img{display:none;align-items:center;justify-content:center;gap:0.45rem;background-color:var(--surface-hover);color:var(--primary);border:1px solid var(--border-color);padding:0.45rem 1rem;border-radius:var(--radius-full);font-size:0.825rem;font-weight:700;cursor:pointer;transition:all var(--transition-fast);margin:0.35rem auto;box-shadow:var(--shadow-sm)}.btn-toggle-step-img:hover{background-color:var(--primary-light);border-color:var(--primary);transform:translateY(-1px)}[data-theme="dark"] .btn-toggle-step-img{background-color:var(--surface);border-color:var(--border-color);color:var(--primary)}[data-theme="dark"] .btn-toggle-step-img:hover{background-color:rgba(26,115,232,0.2);border-color:var(--primary)}