:root,[data-theme=light]{--bg-primary:#f7f3ee;--bg-secondary:#fff;--bg-card:#fff;--bg-header:#2c2520;--text-primary:#2c2520;--text-secondary:#5c524a;--text-muted:#8c8279;--accent:#d4553a;--accent-hover:#bf4530;--accent-light:#fdf0ed;--accent-gradient:linear-gradient(135deg, #d4553a, #e8985a);--border:#e8e0d8;--shadow-sm:0 1px 3px #2c25200d;--shadow-md:0 4px 16px #2c252012;--shadow-lg:0 8px 32px #2c25201a;--overlay:#2c2520a6;--step-badge-bg:linear-gradient(135deg, #d4553a, #e8985a);--step-badge-text:#fff;--notice-bg:#fff8ed;--notice-border:#e8a838;--notice-text:#8b5e0a;--download-bg:#f0f8f0;--download-border:#a8d5a0;--download-hover:#e0f2de;--back-top-bg:#d4553a;--back-top-hover:#bf4530;--back-top-shadow:0 4px 14px #d4553a59;--img-fallback-bg:#f0ebe5;--img-fallback-text:#a09890;--loading-bg:#f7f3ee;--loading-spinner:#d4553a;--nav-link-bg:#ffffff1f;--nav-link-hover-bg:#ffffff38;--nav-link-text:#ffffffd9;--nav-link-hover-text:#fff}[data-theme=dark]{--bg-primary:#1a1614;--bg-secondary:#252019;--bg-card:#252019;--bg-header:#1a1614;--text-primary:#f0eae3;--text-secondary:#c4b9ae;--text-muted:#8c8279;--accent:#e87056;--accent-hover:#f08a72;--accent-light:#3a221c;--accent-gradient:linear-gradient(135deg, #e87056, #f0a868);--border:#3a332c;--shadow-sm:0 1px 3px #0003;--shadow-md:0 4px 16px #00000040;--shadow-lg:0 8px 32px #00000059;--overlay:#000c;--step-badge-bg:linear-gradient(135deg, #e87056, #f0a868);--step-badge-text:#fff;--notice-bg:#2a2010;--notice-border:#9a7520;--notice-text:#f0c860;--download-bg:#1a2a1a;--download-border:#3a6a3a;--download-hover:#253825;--back-top-bg:#e87056;--back-top-hover:#f08a72;--back-top-shadow:0 4px 14px #e8705659;--img-fallback-bg:#3a332c;--img-fallback-text:#6a6058;--loading-bg:#1a1614;--loading-spinner:#e87056;--nav-link-bg:#ffffff14;--nav-link-hover-bg:#ffffff29;--nav-link-text:#f0eae3cc;--nav-link-hover-text:#fff}*,:before,:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth;font-size:16px;line-height:1.5}body{background-color:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Douyin Sans,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Noto Sans SC,sans-serif;transition:background-color .3s,color .3s}.loading-overlay{z-index:9999;background:var(--loading-bg);flex-direction:column;justify-content:center;align-items:center;transition:opacity .4s,visibility .4s;display:flex;position:fixed;inset:0}.loading-overlay.hidden{opacity:0;visibility:hidden;pointer-events:none}.loading-spinner{border:3px solid var(--border);border-top-color:var(--loading-spinner);border-radius:50%;width:40px;height:40px;animation:.8s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{color:var(--text-muted);letter-spacing:.05em;margin-top:16px;font-size:14px}.header{z-index:100;background:var(--bg-header);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid #ffffff0f;transition:background-color .3s;position:sticky;top:0}.header-inner{justify-content:space-between;align-items:center;gap:8px;max-width:800px;margin:0 auto;padding:8px 16px;display:flex}.nav-menu{flex:1}.nav-menu ul{flex-wrap:wrap;gap:6px;list-style:none;display:flex}.nav-menu a{color:var(--nav-link-text);background:var(--nav-link-bg);border-radius:6px;padding:5px 12px;font-size:12px;font-weight:600;text-decoration:none;transition:transform .2s,background-color .2s,color .2s;display:inline-block}.nav-menu a:hover{background:var(--nav-link-hover-bg);color:var(--nav-link-hover-text);transform:scale(1.05)}.nav-menu a:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.theme-toggle{background:var(--nav-link-bg);cursor:pointer;border:none;border-radius:8px;flex-shrink:0;justify-content:center;align-items:center;min-width:34px;min-height:34px;padding:6px;transition:transform .2s,background-color .2s;display:flex}.theme-toggle:hover{background:var(--nav-link-hover-bg);transform:scale(1.08)}.theme-toggle:active{transform:scale(.95)}.theme-toggle:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.theme-icon{font-size:16px;line-height:1}.page-header{text-align:center;padding:28px 0 8px}.page-title{color:var(--text-primary);letter-spacing:-.01em;font-size:24px;font-weight:700;line-height:1.3;transition:color .3s}.page-subtitle{color:var(--text-muted);letter-spacing:.03em;margin-top:4px;font-size:13px;font-weight:400}.main{max-width:800px;margin:0 auto;padding:24px 16px 40px}.step-section{margin-bottom:24px;animation:.5s both fadeSlideUp}.step-section:first-child{animation-delay:.1s}.step-section:nth-child(2){animation-delay:.2s}.step-section:nth-child(3){animation-delay:.3s}@keyframes fadeSlideUp{0%{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}.step-card{background:var(--bg-card);box-shadow:var(--shadow-md);border:1px solid var(--border);border-radius:16px;padding:24px 20px;transition:background-color .3s,border-color .3s,box-shadow .3s,transform .2s}.step-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}.step-title{color:var(--text-primary);align-items:center;gap:10px;margin-bottom:12px;font-size:1.2em;font-weight:700;transition:color .3s;display:flex}.step-title:before{content:attr(data-step);background:var(--step-badge-bg);width:32px;height:32px;color:var(--step-badge-text);border-radius:10px;flex-shrink:0;justify-content:center;align-items:center;font-size:14px;font-weight:700;display:inline-flex}.step-text{color:var(--text-secondary);margin-bottom:16px;font-size:15px;line-height:1.6;transition:color .3s}.step-image-wrapper{cursor:pointer;border:1px solid var(--border);border-radius:12px;margin-top:8px;transition:border-color .3s;position:relative;overflow:hidden}.step-image-wrapper:hover{border-color:var(--accent)}.step-image-wrapper:hover .image-zoom-hint{opacity:1}.step-image-wrapper:hover .step-image{transform:scale(1.02)}.step-image{width:100%;max-width:100%;height:auto;transition:transform .3s;display:block}.image-zoom-hint{color:#fff;opacity:0;pointer-events:none;background:#00000080;border-radius:10px;justify-content:center;align-items:center;width:36px;height:36px;transition:opacity .2s;display:flex;position:absolute;top:12px;right:12px}.img-fallback{background:var(--img-fallback-bg);min-height:120px;color:var(--img-fallback-text);border-radius:12px;justify-content:center;align-items:center;font-size:14px;display:flex}.sub-steps{flex-direction:column;gap:20px;margin-top:8px;display:flex}.sub-step{background:var(--bg-primary);border:1px solid var(--border);border-radius:12px;padding:16px;transition:background-color .3s,border-color .3s}.sub-step-title{color:var(--text-primary);margin-bottom:10px;font-size:15px;font-weight:600;line-height:1.5;transition:color .3s}.notices-section{margin-bottom:24px;animation:.5s .4s both fadeSlideUp}.notices-card{background:var(--notice-bg);border:2px solid var(--notice-border);border-radius:16px;padding:24px 20px;transition:background-color .3s,border-color .3s}.notices-title{color:var(--notice-text);margin-bottom:10px;font-size:1.2em;font-weight:700;transition:color .3s}.notices-text{color:var(--notice-text);margin-bottom:16px;font-size:15px;line-height:1.6;transition:color .3s}.download-list{flex-direction:column;gap:8px;list-style:none;display:flex}.download-item{display:block}.download-link{background:var(--download-bg);border:1px solid var(--download-border);color:var(--text-primary);border-radius:12px;align-items:center;gap:10px;padding:12px 16px;font-size:14px;font-weight:600;text-decoration:none;transition:transform .2s,background-color .2s,border-color .3s;display:flex}.download-link:hover{background:var(--download-hover);transform:scale(1.03)}.download-link:active{transform:scale(.98)}.download-link:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.download-icon{color:var(--accent);flex-shrink:0}.footer{text-align:center;color:var(--text-muted);border-top:1px solid var(--border);padding:24px 16px;font-size:13px;transition:color .3s,border-color .3s}.footer-contact{margin-top:6px}.footer-contact a{color:var(--accent);font-weight:600;text-decoration:none;transition:opacity .2s}.footer-contact a:hover{opacity:.8}.back-to-top{z-index:90;background:var(--back-top-bg);color:#fff;cursor:pointer;width:48px;height:48px;box-shadow:var(--back-top-shadow);border:none;border-radius:14px;justify-content:center;align-items:center;transition:transform .2s,background-color .2s;display:flex;position:fixed;bottom:20px;right:20px}.back-to-top:hover{background:var(--back-top-hover);transform:scale(1.1)}.back-to-top:active{transform:scale(.95)}.back-to-top:focus-visible{outline:2px solid var(--accent);outline-offset:4px}.fade-enter-active,.fade-leave-active{transition:opacity .3s}.fade-enter-from,.fade-leave-to{opacity:0}.lightbox-overlay{z-index:1000;background:var(--overlay);cursor:pointer;justify-content:center;align-items:center;padding:20px;display:flex;position:fixed;inset:0}.lightbox-image{object-fit:contain;cursor:default;border-radius:8px;max-width:95vw;max-height:90vh;box-shadow:0 8px 40px #0006}.lightbox-close{color:#fff;cursor:pointer;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);background:#ffffff26;border:none;border-radius:50%;justify-content:center;align-items:center;width:40px;height:40px;font-size:20px;transition:background-color .2s,transform .2s;display:flex;position:absolute;top:16px;right:16px}.lightbox-close:hover{background:#ffffff4d;transform:scale(1.1)}.lightbox-close:focus-visible{outline-offset:2px;outline:2px solid #fff}.lightbox-enter-active{transition:opacity .25s}.lightbox-leave-active{transition:opacity .2s}.lightbox-enter-from,.lightbox-leave-to{opacity:0}@media (width>=769px){.step-text,.sub-step-title,.notices-text{font-size:16px}.main{padding:32px 24px 60px}.step-card{padding:32px 28px}.notices-card{padding:28px 24px}.sub-step{padding:20px}.page-title{font-size:32px}.page-subtitle{font-size:15px}}@media (width<=768px){.page-title{font-size:24px}.step-text,.sub-step-title,.notices-text{font-size:14px}.nav-menu{padding:12px 16px 0}.step-card,.notices-card{padding:20px 16px}.sub-step{padding:14px}}