:root{--fox-blue: #1546EB;--fox-blue-dark: #0D32B2;--fox-lime: #D9FF4D;--fox-paper: #F7F7F1;--fox-paper-Pure: #FFFFFF;--fox-ink: #161616;--fox-charcoal: #343434;--fox-ash: #E9EAE5;--fox-orange: #FF965B;--fox-border-heavy: 2.5px solid #161616;--fox-border-mid: 1.5px solid #161616;--fox-border-light: 1px solid #C8C9C2;--fox-shadow-hard: 5px 5px 0px #161616;--fox-shadow-sm: 3px 3px 0px #161616;--fox-shadow-blue: 5px 5px 0px #1546EB;--font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, BlinkMacSystemFont, sans-serif;--font-display: "Arial Black", "Impact", "PingFang SC", "Microsoft YaHei", sans-serif;--font-mono: "JetBrains Mono", "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;--container-max: 1320px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);background-color:var(--fox-paper);color:var(--fox-ink);line-height:1.65;scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:clip}body{background-color:var(--fox-paper);color:var(--fox-ink);min-height:100vh;display:flex;flex-direction:column;overflow-x:clip;background-image:radial-gradient(rgba(22,22,22,.06) 1px,transparent 1px);background-size:24px 24px}body.modal-open{overflow:hidden}main{flex:1;width:100%}a{color:inherit;text-decoration:none;transition:color .15s ease,background-color .15s ease,transform .15s ease}img,svg{max-width:100%;height:auto;display:block}.fox-container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 1.5rem}.rule-heavy{border:0;border-top:3px solid var(--fox-ink);margin:0}.rule-double{border-top:3px solid var(--fox-ink);border-bottom:1px solid var(--fox-ink);height:6px}.editorial-section{padding:4.25rem 0;border-bottom:var(--fox-border-heavy)}.editorial-section--alt{background-color:var(--fox-ash)}.editorial-section--ink{background-color:var(--fox-ink);color:var(--fox-paper)}.section-masthead{display:grid;grid-template-columns:220px 1fr auto;gap:1.5rem;align-items:end;padding-bottom:1.5rem;margin-bottom:2.25rem;border-bottom:var(--fox-border-mid)}.editorial-section--ink .section-masthead{border-bottom-color:#f7f7f140}.section-issue-tag{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-mono);font-size:.78rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;padding:.3rem .65rem;background-color:var(--fox-ink);color:var(--fox-lime);border:1.5px solid var(--fox-ink);width:fit-content}.editorial-section--ink .section-issue-tag{background-color:var(--fox-lime);color:var(--fox-ink)}.section-title{font-size:clamp(1.65rem,3vw,2.45rem);font-weight:900;line-height:1.2;letter-spacing:-.02em}.section-subtitle{margin-top:.5rem;font-size:.98rem;color:var(--fox-charcoal);max-width:68ch}.editorial-section--ink .section-subtitle{color:#d2d3cc}.btn-editorial{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;font-weight:800;font-size:.95rem;padding:.78rem 1.35rem;border:2px solid var(--fox-ink);cursor:pointer;transition:transform .15s ease,box-shadow .15s ease,background-color .15s ease;text-align:center;line-height:1.2;white-space:nowrap}.btn-editorial:hover{transform:translate(-2px,-2px);box-shadow:var(--fox-shadow-hard)}.btn-editorial--blue{background-color:var(--fox-blue);color:var(--fox-paper);box-shadow:var(--fox-shadow-sm)}.btn-editorial--blue:hover{background-color:var(--fox-blue-dark)}.btn-editorial--lime{background-color:var(--fox-lime);color:var(--fox-ink);box-shadow:var(--fox-shadow-sm)}.btn-editorial--orange{background-color:var(--fox-orange);color:var(--fox-ink);box-shadow:var(--fox-shadow-sm)}.btn-editorial--paper{background-color:var(--fox-paper);color:var(--fox-ink);box-shadow:var(--fox-shadow-sm)}.badge-lime{display:inline-block;background-color:var(--fox-lime);color:var(--fox-ink);font-family:var(--font-mono);font-size:.75rem;font-weight:800;padding:.18rem .55rem;border:1.5px solid var(--fox-ink)}.badge-blue{display:inline-block;background-color:var(--fox-blue);color:var(--fox-paper);font-family:var(--font-mono);font-size:.75rem;font-weight:800;padding:.18rem .55rem;border:1.5px solid var(--fox-ink)}.badge-orange{display:inline-block;background-color:var(--fox-orange);color:var(--fox-ink);font-family:var(--font-mono);font-size:.75rem;font-weight:800;padding:.18rem .55rem;border:1.5px solid var(--fox-ink)}.page-hero{padding:3rem 0 2.5rem;border-bottom:var(--fox-border-heavy);background:linear-gradient(180deg,var(--fox-ash) 0%,var(--fox-paper) 100%)}.breadcrumb-bar{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;font-family:var(--font-mono);font-size:.82rem;color:var(--fox-charcoal);margin-bottom:1.25rem}.breadcrumb-bar a{text-decoration:underline;text-underline-offset:3px}.breadcrumb-bar a:hover{color:var(--fox-blue)}.page-hero-grid{display:grid;grid-template-columns:1fr 340px;gap:2rem;align-items:end}.page-hero-title{font-size:clamp(1.85rem,3.8vw,3rem);font-weight:900;line-height:1.15;letter-spacing:-.02em;margin:.65rem 0 1rem}.page-hero-desc{font-size:1.05rem;color:var(--fox-charcoal);max-width:66ch}.page-hero-card{background-color:var(--fox-paper);border:var(--fox-border-mid);box-shadow:var(--fox-shadow-sm);padding:1.25rem}.pricing-band-wrapper{border:var(--fox-border-heavy);background-color:var(--fox-paper);box-shadow:var(--fox-shadow-hard)}.pricing-band-header{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 1.5rem;background-color:var(--fox-ink);color:var(--fox-paper);border-bottom:var(--fox-border-mid)}.pricing-band-header-code{font-family:var(--font-mono);font-size:.82rem;color:var(--fox-lime);font-weight:700}.pricing-band-strips{display:grid;grid-template-columns:repeat(3,1fr)}.pricing-strip{display:flex;flex-direction:column;justify-content:space-between;padding:1.65rem 1.5rem;border-right:var(--fox-border-mid);position:relative;background-color:var(--fox-paper)}.pricing-strip:last-child{border-right:none}.pricing-strip--lime{background-color:#f3f8df}.pricing-strip-top{display:flex;justify-content:space-between;align-items:center;gap:.5rem;padding-bottom:.85rem;border-bottom:1.5px dashed var(--fox-ink);margin-bottom:1rem}.pricing-strip-code{font-family:var(--font-mono);font-size:.76rem;font-weight:800;color:var(--fox-charcoal)}.pricing-strip-name{font-size:1.4rem;font-weight:900;margin-bottom:.65rem;display:flex;align-items:center;justify-content:space-between}.pricing-strip-metrics{display:grid;grid-template-columns:1fr 1fr;gap:.75rem;padding:.9rem;background-color:var(--fox-paper-Pure);border:var(--fox-border-mid);margin-bottom:1rem}.pricing-metric-box{display:flex;flex-direction:column}.pricing-metric-label{font-size:.75rem;font-family:var(--font-mono);color:var(--fox-charcoal);text-transform:uppercase}.pricing-metric-value{font-size:1.45rem;font-weight:900;color:var(--fox-blue);line-height:1.2;margin-top:.15rem}.pricing-metric-value--traffic{color:var(--fox-ink);background-color:var(--fox-lime);padding:.1rem .35rem;width:fit-content;font-size:1.2rem}.pricing-policy-box{font-size:.88rem;padding:.65rem .8rem;background-color:var(--fox-ash);border-left:4px solid var(--fox-blue);margin-bottom:1rem;font-weight:600}.pricing-strip--lime .pricing-policy-box{border-left-color:var(--fox-ink);background-color:var(--fox-paper)}.pricing-benefits-list{list-style:none;margin-bottom:1.1rem;display:flex;flex-direction:column;gap:.45rem;font-size:.9rem}.pricing-benefits-list li{display:flex;align-items:flex-start;gap:.5rem}.pricing-benefits-list li:before{content:"■";color:var(--fox-blue);font-size:.7rem;margin-top:.22rem;flex-shrink:0}.pricing-caution{font-size:.78rem;color:var(--fox-charcoal);background-color:#ff965b29;border:1px solid var(--fox-ink);padding:.55rem .7rem;margin-bottom:1.15rem;line-height:1.45}.pricing-matrix-wrap{border-top:var(--fox-border-heavy);overflow-x:auto;background-color:var(--fox-paper)}.pricing-matrix-table{width:100%;border-collapse:collapse;font-size:.9rem;text-align:left}.pricing-matrix-table th,.pricing-matrix-table td{padding:.85rem 1.1rem;border-bottom:1px solid #C8C9C2;border-right:1px solid #C8C9C2;vertical-align:top}.pricing-matrix-table th:last-child,.pricing-matrix-table td:last-child{border-right:none}.pricing-matrix-table thead th{background-color:var(--fox-ash);font-weight:900;border-bottom:var(--fox-border-mid);font-size:.92rem}.pricing-matrix-table tbody th{font-weight:800;background-color:#e9eae573;width:22%}.article-prose{font-size:1.04rem;line-height:1.8;color:var(--fox-ink)}.article-prose h2{font-size:clamp(1.35rem,2.2vw,1.7rem);font-weight:900;margin:2.2rem 0 .95rem;padding-bottom:.45rem;border-bottom:2px solid var(--fox-ink);display:flex;align-items:center;gap:.5rem}.article-prose h2:before{content:"▍";color:var(--fox-blue)}.article-prose h3{font-size:1.18rem;font-weight:800;margin:1.5rem 0 .6rem;color:var(--fox-blue-dark)}.article-prose p{margin-bottom:1.1rem}.article-prose ul,.article-prose ol{margin:.85rem 0 1.25rem 1.4rem}.article-prose li{margin-bottom:.5rem}.article-prose a{color:var(--fox-blue);font-weight:700;text-decoration:underline;text-underline-offset:3px}.article-prose a:hover{background-color:var(--fox-lime);color:var(--fox-ink)}.article-prose code{font-family:var(--font-mono);font-size:.88em;background-color:var(--fox-ash);padding:.15rem .4rem;border:1px solid #C8C9C2}.article-prose table{width:100%;border-collapse:collapse;margin:1.25rem 0 1.5rem;font-size:.92rem;border:var(--fox-border-mid)}.article-prose th,.article-prose td{border:1px solid var(--fox-ink);padding:.65rem .85rem;text-align:left}.article-prose th{background-color:var(--fox-lime);font-weight:800}@media (max-width: 1024px){.section-masthead{grid-template-columns:1fr;gap:.75rem}.page-hero-grid,.pricing-band-strips{grid-template-columns:1fr}.pricing-strip{border-right:none;border-bottom:var(--fox-border-mid)}.pricing-strip:last-child{border-bottom:none}}@media (max-width: 640px){.fox-container{padding:0 1rem}.editorial-section{padding:2.75rem 0}.btn-editorial{padding:.7rem 1rem;font-size:.9rem}.pricing-strip{padding:1.25rem 1rem}.pricing-matrix-table th,.pricing-matrix-table td{padding:.65rem .7rem;font-size:.82rem}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.fox-header[data-astro-cid-3ef6ksr2]{position:sticky;top:0;z-index:90;background-color:var(--fox-paper);border-bottom:var(--fox-border-heavy)}.fox-header-topstrip[data-astro-cid-3ef6ksr2]{background-color:var(--fox-ink);color:var(--fox-paper);font-family:var(--font-mono);font-size:.75rem;padding:.35rem 0;border-bottom:1px solid #343434}.fox-header-topstrip-inner[data-astro-cid-3ef6ksr2]{display:flex;justify-content:space-between;align-items:center;gap:1rem}.fox-issue-pill[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:.45rem;font-weight:700;color:var(--fox-lime)}.issue-dot[data-astro-cid-3ef6ksr2]{width:7px;height:7px;background-color:var(--fox-lime);display:inline-block}.issue-divider[data-astro-cid-3ef6ksr2]{opacity:.45}.fox-topstrip-Quick[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:.5rem;color:#e9eae5}.fox-header-main[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:68px;padding-top:.45rem;padding-bottom:.45rem}.fox-brand-link[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center;gap:.65rem;flex-shrink:0}.fox-brand-text[data-astro-cid-3ef6ksr2]{display:flex;align-items:baseline;gap:.35rem}.fox-brand-en[data-astro-cid-3ef6ksr2]{font-family:var(--font-mono);font-weight:900;font-size:1.15rem;letter-spacing:-.03em;color:var(--fox-blue)}.fox-brand-zh[data-astro-cid-3ef6ksr2]{font-weight:900;font-size:1.28rem;letter-spacing:-.02em;color:var(--fox-ink)}.fox-nav-desktop[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:.25rem}.fox-nav-item[data-astro-cid-3ef6ksr2]{font-size:.94rem;font-weight:800;padding:.45rem .78rem;border:1.5px solid transparent}.fox-nav-item[data-astro-cid-3ef6ksr2]:hover{border-color:var(--fox-ink);background-color:var(--fox-ash)}.fox-nav-item[data-astro-cid-3ef6ksr2].is-active{background-color:var(--fox-lime);border-color:var(--fox-ink)}.fox-header-actions[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:.65rem}.fox-search-trigger[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center;gap:.45rem;background-color:var(--fox-ash);color:var(--fox-ink);border:1.5px solid var(--fox-ink);padding:.45rem .75rem;font-family:var(--font-sans);font-size:.88rem;font-weight:800;cursor:pointer;box-shadow:2px 2px #161616}.fox-search-trigger[data-astro-cid-3ef6ksr2]:hover{background-color:var(--fox-lime)}.fox-kbd[data-astro-cid-3ef6ksr2]{font-family:var(--font-mono);font-size:.7rem;padding:.1rem .35rem;background-color:var(--fox-paper);border:1px solid var(--fox-ink)}.fox-register-btn[data-astro-cid-3ef6ksr2]{padding:.5rem .95rem;font-size:.88rem}.fox-mobile-toggle[data-astro-cid-3ef6ksr2]{display:none;flex-direction:column;justify-content:center;gap:4px;width:38px;height:38px;padding:7px;background-color:var(--fox-paper);border:1.5px solid var(--fox-ink);cursor:pointer}.toggle-bar[data-astro-cid-3ef6ksr2]{display:block;width:100%;height:2.5px;background-color:var(--fox-ink)}.fox-mobile-drawer[data-astro-cid-3ef6ksr2]{border-top:var(--fox-border-mid);background-color:var(--fox-paper);padding:1rem 0 1.35rem}.fox-mobile-issue[data-astro-cid-3ef6ksr2]{font-family:var(--font-mono);font-size:.75rem;font-weight:700;color:var(--fox-blue);margin-bottom:.75rem}.fox-nav-mobile[data-astro-cid-3ef6ksr2]{display:flex;flex-direction:column;border-top:1px solid var(--fox-ink);margin-bottom:1rem}.fox-nav-mobile-link[data-astro-cid-3ef6ksr2]{display:flex;justify-content:space-between;align-items:center;padding:.75rem .25rem;font-weight:800;font-size:.98rem;border-bottom:1px solid #C8C9C2}.fox-mobile-actions[data-astro-cid-3ef6ksr2]{display:grid;grid-template-columns:1fr;gap:.65rem}@media (max-width: 1024px){.fox-topstrip-Quick[data-astro-cid-3ef6ksr2],.fox-nav-desktop[data-astro-cid-3ef6ksr2]{display:none}.fox-mobile-toggle[data-astro-cid-3ef6ksr2]{display:inline-flex}.fox-kbd[data-astro-cid-3ef6ksr2]{display:none}}@media (max-width: 520px){.fox-register-btn[data-astro-cid-3ef6ksr2]{padding:.42rem .65rem;font-size:.8rem}.fox-search-trigger[data-astro-cid-3ef6ksr2] span[data-astro-cid-3ef6ksr2]{display:none}.fox-brand-en[data-astro-cid-3ef6ksr2]{font-size:.98rem}.fox-brand-zh[data-astro-cid-3ef6ksr2]{font-size:1.1rem}}.fox-footer[data-astro-cid-sz7xmlte]{background-color:var(--fox-ink);color:var(--fox-paper);border-top:4px solid var(--fox-blue);padding:3.5rem 0 2rem;margin-top:auto}.fox-footer-top[data-astro-cid-sz7xmlte]{display:grid;grid-template-columns:1.5fr 1fr 1fr;gap:2.5rem;padding-bottom:2.25rem;border-bottom:1px solid #343434}.fox-footer-badge[data-astro-cid-sz7xmlte]{display:inline-block;background-color:var(--fox-lime);color:var(--fox-ink);font-family:var(--font-mono);font-size:.74rem;font-weight:800;padding:.2rem .55rem;margin-bottom:.85rem}.fox-footer-logo[data-astro-cid-sz7xmlte]{display:flex;align-items:baseline;gap:.45rem;margin-bottom:.75rem}.logo-en[data-astro-cid-sz7xmlte]{font-family:var(--font-mono);font-size:1.35rem;font-weight:900;color:var(--fox-lime)}.logo-zh[data-astro-cid-sz7xmlte]{font-size:1.45rem;font-weight:900;color:var(--fox-paper)}.logo-sub[data-astro-cid-sz7xmlte]{font-size:.88rem;color:#b4b5ae;font-family:var(--font-mono)}.fox-footer-desc[data-astro-cid-sz7xmlte]{font-size:.92rem;color:#d2d3cc;margin-bottom:1.1rem;max-width:52ch}.fox-footer-plan-pills[data-astro-cid-sz7xmlte]{display:flex;flex-wrap:wrap;gap:.5rem}.footer-plan-pill[data-astro-cid-sz7xmlte]{font-size:.78rem;font-family:var(--font-mono);background-color:#242424;border:1px solid #4A4A4A;padding:.3rem .6rem;color:var(--fox-paper)}.footer-plan-pill[data-astro-cid-sz7xmlte]:hover{border-color:var(--fox-lime);color:var(--fox-lime)}.footer-col-title[data-astro-cid-sz7xmlte]{font-size:.95rem;font-family:var(--font-mono);text-transform:uppercase;color:var(--fox-lime);margin-bottom:1rem;letter-spacing:.04em}.footer-nav-list[data-astro-cid-sz7xmlte]{list-style:none;display:flex;flex-direction:column;gap:.58rem;font-size:.9rem}.footer-nav-list[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:#e0e1da}.footer-nav-list[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--fox-lime);text-decoration:underline}.footer-commercial-link[data-astro-cid-sz7xmlte]{color:var(--fox-orange)!important;font-weight:700}.fox-footer-bottom[data-astro-cid-sz7xmlte]{padding-top:1.35rem;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:1rem;font-size:.82rem;color:#9e9f99;font-family:var(--font-mono)}.footer-meta-links[data-astro-cid-sz7xmlte]{display:flex;align-items:center;gap:.55rem}.footer-meta-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:var(--fox-lime)}@media (max-width: 900px){.fox-footer-top[data-astro-cid-sz7xmlte]{grid-template-columns:1fr;gap:1.75rem}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}.fox-search-backdrop{position:fixed;inset:0;z-index:200;background-color:#161616c7;display:flex;align-items:flex-start;justify-content:center;padding:4vh 1rem 2rem;overflow-y:auto}.fox-search-backdrop[hidden]{display:none!important}.fox-search-dialog{width:100%;max-width:780px;background-color:var(--fox-paper);border:3px solid var(--fox-ink);box-shadow:8px 8px 0 var(--fox-blue);overflow:hidden}.fox-search-header{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding:1rem 1.35rem;background-color:var(--fox-ink);color:var(--fox-paper)}.fox-search-title-wrap{display:flex;align-items:center;gap:.65rem;flex-wrap:wrap}.fox-search-heading{font-size:1.05rem;font-weight:900}.fox-search-close{display:inline-flex;align-items:center;gap:.35rem;background-color:var(--fox-paper);color:var(--fox-ink);border:1.5px solid var(--fox-ink);padding:.35rem .65rem;font-weight:800;font-size:.82rem;cursor:pointer}.fox-search-close:hover{background-color:var(--fox-orange)}.fox-search-close kbd{font-family:var(--font-mono);font-size:.7rem}.fox-search-input-bar{padding:1.1rem 1.35rem .75rem;border-bottom:1.5px solid var(--fox-ink);background-color:#fff}.fox-search-field{width:100%;font-size:1.05rem;font-family:var(--font-sans);font-weight:700;padding:.75rem .95rem;border:2px solid var(--fox-ink);background-color:var(--fox-paper);color:var(--fox-ink);outline:none}.fox-search-field:focus{border-color:var(--fox-blue);box-shadow:3px 3px 0 var(--fox-blue)}.fox-search-chips{display:flex;flex-wrap:wrap;align-items:center;gap:.4rem;padding:.75rem 1.35rem;background-color:var(--fox-ash);border-bottom:1.5px solid var(--fox-ink)}.chips-label{font-size:.78rem;font-weight:800;font-family:var(--font-mono);color:var(--fox-charcoal)}.search-chip-btn{font-size:.78rem;font-weight:700;padding:.2rem .55rem;background-color:var(--fox-paper);color:var(--fox-ink);border:1px solid var(--fox-ink);cursor:pointer}.search-chip-btn:hover{background-color:var(--fox-lime)}.fox-search-status{padding:.6rem 1.35rem;font-size:.82rem;font-family:var(--font-mono);color:var(--fox-charcoal);border-bottom:1px solid #C8C9C2}.fox-search-results{max-height:52vh;overflow-y:auto;padding:.85rem 1.35rem 1.25rem;display:flex;flex-direction:column;gap:.65rem}.search-result-item{display:block;padding:.85rem 1rem;background-color:#fff;border:1.5px solid var(--fox-ink);transition:transform .12s ease,box-shadow .12s ease}.search-result-item:hover{transform:translate(-2px,-2px);box-shadow:4px 4px 0 var(--fox-ink);background-color:#fcfdf7}.result-meta{display:flex;align-items:center;justify-content:space-between;gap:.5rem;margin-bottom:.3rem}.result-badge{font-family:var(--font-mono);font-size:.72rem;font-weight:800;background-color:var(--fox-lime);color:var(--fox-ink);padding:.1rem .45rem;border:1px solid var(--fox-ink)}.result-url{font-family:var(--font-mono);font-size:.74rem;color:var(--fox-blue)}.result-title{font-size:.98rem;font-weight:900;margin-bottom:.25rem;color:var(--fox-ink)}.result-excerpt{font-size:.85rem;color:var(--fox-charcoal);line-height:1.5}.result-excerpt mark{background-color:var(--fox-lime);color:var(--fox-ink);padding:0 .2rem;font-weight:800}