.site-header[data-astro-cid-3ef6ksr2]{position:sticky;top:0;z-index:1000;background-color:var(--color-paper-bg);border-bottom:1px solid var(--color-rule);height:var(--header-height);display:flex;align-items:center}.header-inner[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;justify-content:space-between;width:100%;position:relative}.header-logo[data-astro-cid-3ef6ksr2]{display:flex;flex-direction:column;text-decoration:none;line-height:1.1}.logo-sub[data-astro-cid-3ef6ksr2]{font-size:.7rem;font-weight:700;letter-spacing:1.5px;color:var(--color-signal-red);font-family:var(--font-mono)}.logo-main[data-astro-cid-3ef6ksr2]{font-size:1.4rem;font-weight:900;letter-spacing:-.5px;color:var(--color-title-dark)}.nav-desktop[data-astro-cid-3ef6ksr2]{display:flex;align-items:center}.nav-list[data-astro-cid-3ef6ksr2]{display:flex;list-style:none;gap:1.75rem;align-items:center}.nav-link[data-astro-cid-3ef6ksr2]{font-size:.95rem;font-weight:600;color:var(--color-graphite);padding:.35rem 0;position:relative;transition:color .2s ease}.nav-link[data-astro-cid-3ef6ksr2]:hover,.nav-link[data-astro-cid-3ef6ksr2].is-active{color:var(--color-signal-red)}.nav-link[data-astro-cid-3ef6ksr2].is-active:after{content:"";position:absolute;bottom:-4px;left:0;right:0;height:2px;background-color:var(--color-signal-red)}.header-actions[data-astro-cid-3ef6ksr2]{display:flex;align-items:center;gap:.85rem}.header-search-btn[data-astro-cid-3ef6ksr2]{display:inline-flex;align-items:center;gap:.45rem;padding:.45rem .75rem;background-color:var(--color-content-bg);border:1px solid var(--color-border-light);border-radius:2px;color:var(--color-graphite);font-size:.85rem;font-weight:500;cursor:pointer;transition:all .2s ease}.header-search-btn[data-astro-cid-3ef6ksr2]:hover{border-color:var(--color-graphite);background-color:#fff}.search-kbd-desktop[data-astro-cid-3ef6ksr2]{font-size:.7rem;background-color:var(--color-paper-bg);border:1px solid var(--color-rule);padding:.1rem .3rem;border-radius:2px;color:var(--color-text-muted)}.btn-sm[data-astro-cid-3ef6ksr2]{padding:.45rem 1rem;font-size:.85rem}.nav-mobile-toggle[data-astro-cid-3ef6ksr2]{display:none;flex-direction:column;justify-content:center;gap:5px;width:36px;height:36px;background:transparent;border:1px solid var(--color-rule);border-radius:2px;cursor:pointer;padding:6px}.nav-mobile-toggle[data-astro-cid-3ef6ksr2] .bar[data-astro-cid-3ef6ksr2]{display:block;width:100%;height:2px;background-color:var(--color-title-dark);transition:all .2s ease}.mobile-drawer[data-astro-cid-3ef6ksr2]{display:none;position:fixed;top:var(--header-height);left:0;right:0;bottom:0;background-color:var(--color-paper-bg);border-top:1px solid var(--color-rule);z-index:999;padding:1.5rem;overflow-y:auto}.mobile-drawer[data-astro-cid-3ef6ksr2][aria-hidden=false]{display:block}.mobile-nav-list[data-astro-cid-3ef6ksr2]{list-style:none;display:flex;flex-direction:column;gap:1.25rem;border-bottom:1px solid var(--color-border-light);padding-bottom:1.5rem}.mobile-nav-link[data-astro-cid-3ef6ksr2]{font-size:1.15rem;font-weight:700;color:var(--color-title-dark)}.mobile-drawer-actions[data-astro-cid-3ef6ksr2]{margin-top:1.5rem}.btn-block[data-astro-cid-3ef6ksr2]{width:100%}.mobile-drawer-footer[data-astro-cid-3ef6ksr2]{margin-top:2rem;font-size:.8rem;color:var(--color-text-muted);font-family:var(--font-mono);text-align:center}@media (max-width: 860px){.nav-desktop[data-astro-cid-3ef6ksr2],.register-btn-desktop[data-astro-cid-3ef6ksr2],.search-label-desktop[data-astro-cid-3ef6ksr2],.search-kbd-desktop[data-astro-cid-3ef6ksr2]{display:none}.header-search-btn[data-astro-cid-3ef6ksr2]{padding:.45rem .55rem}.nav-mobile-toggle[data-astro-cid-3ef6ksr2]{display:flex}}.site-footer[data-astro-cid-sz7xmlte]{background-color:var(--color-graphite);color:var(--color-paper-bg);margin-top:auto;font-size:.9rem;position:relative}.footer-top-rule[data-astro-cid-sz7xmlte]{height:4px;background-color:var(--color-signal-red);width:100%}.footer-content[data-astro-cid-sz7xmlte]{padding-top:3.5rem;padding-bottom:2rem}.footer-grid[data-astro-cid-sz7xmlte]{display:grid;grid-template-columns:2fr 1fr 1fr 1.2fr;gap:3rem}.footer-logo[data-astro-cid-sz7xmlte]{display:flex;flex-direction:column;margin-bottom:1rem;line-height:1.1}.logo-sub[data-astro-cid-sz7xmlte]{font-size:.7rem;font-family:var(--font-mono);color:var(--color-ice-blue);letter-spacing:1.5px;font-weight:700}.logo-title[data-astro-cid-sz7xmlte]{font-size:1.5rem;font-weight:900;color:#fff}.footer-desc[data-astro-cid-sz7xmlte]{color:#c0c5cc;font-size:.88rem;line-height:1.65;margin-bottom:1.25rem}.footer-bulletin-meta[data-astro-cid-sz7xmlte]{display:flex;flex-direction:column;gap:.25rem;font-size:.75rem;color:#8c949d;font-family:var(--font-mono)}.footer-col-title[data-astro-cid-sz7xmlte]{font-size:1rem;font-weight:700;color:#fff;margin-bottom:1.25rem;position:relative;padding-bottom:.5rem;border-bottom:1px solid rgba(255,255,255,.15)}.footer-link-list[data-astro-cid-sz7xmlte]{list-style:none;display:flex;flex-direction:column;gap:.75rem}.footer-link[data-astro-cid-sz7xmlte]{color:#d2d6dc;transition:color .2s ease;font-size:.88rem}.footer-link[data-astro-cid-sz7xmlte]:hover{color:var(--color-ice-blue)}.commercial-highlight[data-astro-cid-sz7xmlte]{color:var(--color-ice-blue);font-weight:600}.footer-divider[data-astro-cid-sz7xmlte]{height:1px;background-color:#ffffff26;margin:2.5rem 0 1.5rem}.footer-bottom[data-astro-cid-sz7xmlte]{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:1rem;font-size:.8rem;color:#8c949d}.footer-bottom-links[data-astro-cid-sz7xmlte]{display:flex;align-items:center;gap:.5rem}.bottom-link[data-astro-cid-sz7xmlte]{color:#a0a6ad}.bottom-link[data-astro-cid-sz7xmlte]:hover{color:#fff}.sep[data-astro-cid-sz7xmlte]{color:#fff3}@media (max-width: 900px){.footer-grid[data-astro-cid-sz7xmlte]{grid-template-columns:1fr 1fr;gap:2rem}}@media (max-width: 600px){.footer-grid[data-astro-cid-sz7xmlte]{grid-template-columns:1fr}.footer-bottom[data-astro-cid-sz7xmlte]{flex-direction:column;align-items:flex-start}}.search-modal[data-astro-cid-euff75kw]{position:fixed;inset:0;z-index:9999;display:none;align-items:flex-start;justify-content:center;padding-top:10vh}.search-modal[data-astro-cid-euff75kw][aria-hidden=false]{display:flex}.search-backdrop[data-astro-cid-euff75kw]{position:fixed;inset:0;background-color:#292f36a6;backdrop-filter:blur(3px)}.search-container[data-astro-cid-euff75kw]{position:relative;width:90%;max-width:680px;background-color:#fffdf9;border:2px solid #34383F;box-shadow:0 20px 40px #00000040;border-radius:2px;display:flex;flex-direction:column;max-height:80vh;z-index:10}.search-header[data-astro-cid-euff75kw]{display:flex;align-items:center;padding:1rem 1.25rem;border-bottom:1px solid #DEDCD6;gap:.75rem}.search-input-wrapper[data-astro-cid-euff75kw]{flex:1;display:flex;align-items:center;gap:.75rem;background-color:#f6f3ec;border:1px solid #B9B6B0;padding:.5rem .85rem;border-radius:2px}.search-icon-input[data-astro-cid-euff75kw]{color:#626b73;flex-shrink:0}.search-input[data-astro-cid-euff75kw]{width:100%;border:none;background:transparent;font-size:1rem;color:#292f36;outline:none;font-family:inherit}.search-input[data-astro-cid-euff75kw]::placeholder{color:#8c949d;font-size:.9rem}.search-clear[data-astro-cid-euff75kw]{background:transparent;border:none;font-size:1.25rem;color:#626b73;cursor:pointer;line-height:1;padding:0 .25rem}.search-close-btn[data-astro-cid-euff75kw]{background:transparent;border:1px solid #B9B6B0;padding:.4rem .6rem;border-radius:2px;cursor:pointer;display:flex;align-items:center;gap:.35rem;font-size:.85rem;color:#34383f}.search-close-btn[data-astro-cid-euff75kw]:hover{background-color:#f6f3ec;border-color:#b94b50;color:#b94b50}.close-symbol[data-astro-cid-euff75kw]{font-size:1.2rem;line-height:1}.search-quick-tags[data-astro-cid-euff75kw]{display:flex;flex-wrap:wrap;align-items:center;gap:.5rem;padding:.75rem 1.25rem;background-color:#faf8f3;border-bottom:1px solid #DEDCD6;font-size:.85rem}.quick-title[data-astro-cid-euff75kw]{color:#626b73;font-weight:600}.quick-tag[data-astro-cid-euff75kw]{background-color:#fffdf9;border:1px solid #B9B6B0;padding:.2rem .5rem;border-radius:2px;font-size:.8rem;cursor:pointer;color:#34383f;transition:all .15s ease}.quick-tag[data-astro-cid-euff75kw]:hover{background-color:#a9d9e8;border-color:#34383f;color:#292f36}.search-results[data-astro-cid-euff75kw]{flex:1;overflow-y:auto;padding:1.25rem;min-height:240px;display:flex;flex-direction:column;gap:1rem}.search-placeholder[data-astro-cid-euff75kw]{margin:auto;text-align:center;color:#626b73;display:flex;flex-direction:column;gap:.5rem;font-size:.95rem}.search-shortcut-hint[data-astro-cid-euff75kw] kbd[data-astro-cid-euff75kw]{background-color:#faf8f3;border:1px solid #B9B6B0;border-radius:3px;padding:.1rem .4rem;font-size:.75rem;font-family:inherit;box-shadow:0 1px 1px #0000001a}.search-footer[data-astro-cid-euff75kw]{display:flex;justify-content:space-between;padding:.65rem 1.25rem;border-top:1px solid #DEDCD6;background-color:#faf8f3;font-size:.75rem;color:#8c949d;font-family:var(--font-mono)}.search-result-item{border:1px solid #DEDCD6;padding:1rem;background-color:#fffdf9;border-radius:2px;transition:border-color .2s ease,box-shadow .2s ease;display:block;text-decoration:none;color:inherit}.search-result-item:hover{border-color:#b94b50;box-shadow:0 4px 12px #b94b5014}.search-result-title{font-size:1.1rem;font-weight:700;color:#292f36;margin-bottom:.35rem}.search-result-snippet{font-size:.9rem;color:#626b73;line-height:1.6}.search-result-snippet mark{background-color:#a9d9e880;color:#b94b50;font-weight:600;padding:.05rem .2rem;border-radius:2px}@media (max-width: 640px){.search-modal[data-astro-cid-euff75kw]{padding-top:0}.search-container[data-astro-cid-euff75kw]{width:100%;height:100vh;max-height:100vh;border:none}.close-key[data-astro-cid-euff75kw]{display:none}}:root{--color-paper-bg: #F6F3EC;--color-content-bg: #FFFDF9;--color-graphite: #34383F;--color-title-dark: #292F36;--color-signal-red: #B94B50;--color-signal-red-dark: #94383E;--color-ice-blue: #A9D9E8;--color-ice-blue-soft: rgba(169, 217, 232, .25);--color-text-muted: #626B73;--color-rule: #B9B6B0;--color-border-light: #DEDCD6;--color-black: #1E2227;--font-serif: "Songti SC", "SimSun", "STSong", "Noto Serif SC", serif;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;--font-mono: "SF Mono", "Fira Code", "Cascadia Code", Consolas, monospace;--container-max: 1200px;--container-wide: 1360px;--header-height: 72px;--transition-fast: .2s ease;--transition-normal: .3s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-family:var(--font-sans);background-color:var(--color-paper-bg);color:var(--color-graphite);line-height:1.7;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;scroll-behavior:smooth;overflow-x:hidden}body{min-height:100vh;display:flex;flex-direction:column;background-color:var(--color-paper-bg);overflow-x:hidden;position:relative}a{color:inherit;text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-signal-red)}.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 1.5rem}.container-wide{width:100%;max-width:var(--container-wide);margin:0 auto;padding:0 1.5rem}.masthead-border{border-top:3px solid var(--color-graphite);border-bottom:1px solid var(--color-graphite);padding:.5rem 0}.editorial-rule{height:1px;background-color:var(--color-rule);border:none;margin:2rem 0}.editorial-rule-double{height:4px;border-top:1px solid var(--color-graphite);border-bottom:1px solid var(--color-graphite);margin:2.5rem 0}.editorial-rule-red{height:2px;background-color:var(--color-signal-red);border:none;margin:1.5rem 0}.badge-ice{display:inline-flex;align-items:center;padding:.2rem .65rem;font-size:.8rem;font-weight:600;color:var(--color-title-dark);background-color:var(--color-ice-blue);border-radius:2px;letter-spacing:.5px}.badge-signal{display:inline-flex;align-items:center;padding:.2rem .65rem;font-size:.8rem;font-weight:600;color:#fff;background-color:var(--color-signal-red);border-radius:2px;letter-spacing:.5px}.badge-outline{display:inline-flex;align-items:center;padding:.2rem .65rem;font-size:.8rem;font-weight:500;color:var(--color-text-muted);border:1px solid var(--color-rule);border-radius:2px;background:transparent}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.75rem 1.5rem;font-size:.95rem;font-weight:600;border-radius:2px;cursor:pointer;transition:all var(--transition-fast);border:1px solid transparent;text-align:center;text-decoration:none}.btn-primary{background-color:var(--color-graphite);color:var(--color-paper-bg);border-color:var(--color-graphite)}.btn-primary:hover{background-color:var(--color-black);color:#fff}.btn-signal{background-color:var(--color-signal-red);color:#fff;border-color:var(--color-signal-red)}.btn-signal:hover{background-color:var(--color-signal-red-dark);color:#fff}.btn-outline{background-color:transparent;color:var(--color-graphite);border-color:var(--color-graphite)}.btn-outline:hover{background-color:var(--color-graphite);color:var(--color-paper-bg)}.editorial-grid{display:grid;grid-template-columns:repeat(12,1fr);gap:1.5rem}.section-masthead{display:flex;align-items:flex-end;justify-content:space-between;border-bottom:2px solid var(--color-graphite);padding-bottom:.75rem;margin-bottom:2rem;flex-wrap:wrap;gap:1rem}.section-masthead-title{font-size:1.75rem;font-weight:800;color:var(--color-title-dark);display:flex;align-items:center;gap:.75rem;letter-spacing:-.5px}.section-masthead-no{font-family:var(--font-mono);font-size:1rem;font-weight:700;color:var(--color-signal-red);background-color:#b94b501a;padding:.15rem .45rem;border-radius:2px}.section-masthead-meta{font-size:.85rem;color:var(--color-text-muted);font-family:var(--font-mono)}.paper-card{background-color:var(--color-content-bg);border:1px solid var(--color-border-light);padding:1.75rem;border-radius:2px;position:relative;box-shadow:0 1px 3px #00000008}.prose-editorial{font-size:1.05rem;line-height:1.85;color:var(--color-graphite)}.prose-editorial h2{font-size:1.5rem;font-weight:700;color:var(--color-title-dark);margin:2.25rem 0 1rem;padding-bottom:.4rem;border-bottom:1px solid var(--color-rule)}.prose-editorial h3{font-size:1.25rem;font-weight:600;color:var(--color-title-dark);margin:1.75rem 0 .75rem}.prose-editorial p{margin-bottom:1.25rem;text-align:justify}.prose-editorial ul,.prose-editorial ol{margin-bottom:1.25rem;padding-left:1.5rem}.prose-editorial li{margin-bottom:.5rem}.prose-editorial blockquote{border-left:3px solid var(--color-signal-red);background-color:#b94b500d;padding:1rem 1.25rem;margin:1.5rem 0;font-style:italic;color:var(--color-title-dark)}.prose-editorial a{color:var(--color-signal-red);text-decoration:underline;text-underline-offset:3px}.prose-editorial a:hover{color:var(--color-signal-red-dark)}@media (prefers-reduced-motion: reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}@media (max-width: 1024px){.editorial-grid{grid-template-columns:repeat(6,1fr)}.hero-grid{grid-template-columns:1fr!important;gap:2rem!important}.hero-sidebar{border-left:none!important;border-top:1px solid var(--color-rule)!important;padding-left:0!important;padding-top:1.5rem!important}}@media (max-width: 768px){:root{--header-height: 64px}.container,.container-wide{padding:0 1rem}.hero-masthead-title{font-size:2.5rem!important;letter-spacing:-1px!important;line-height:1.15!important}.section-masthead-title{font-size:1.35rem!important}.desktop-pricing-table{display:none!important}.mobile-pricing-list{display:flex!important;flex-direction:column;gap:1.5rem}.btn-group-mobile{display:flex;flex-direction:column;width:100%;gap:.75rem}.btn-group-mobile .btn{width:100%}.nav-desktop{display:none!important}.nav-mobile-toggle{display:flex!important}.footer-grid{grid-template-columns:1fr!important;gap:2rem!important}}@media (max-width: 430px){.hero-masthead-title{font-size:2rem!important}.hero-tagline{font-size:1.1rem!important}.paper-card{padding:1.25rem}}@media (min-width: 769px){.mobile-pricing-list{display:none!important}.desktop-pricing-table{display:block!important}.nav-mobile-toggle{display:none!important}}.site-main[data-astro-cid-37fxchfa]{flex:1 0 auto;width:100%}