:root{--bg-page: #F7F7F5;--bg-card: #FFFFFF;--bg-card-subtle: #F2F3F4;--bg-silver: #E4E6E7;--bg-silver-light: #ECEEED;--text-primary: #252B31;--text-secondary: #5A626A;--text-muted: #858D94;--accent-steel: #56748A;--accent-steel-hover: #435c6e;--border-color: #E3E6E8;--border-light: #EDEFF0;--footer-bg: #1B2025;--footer-card: #252B31;--footer-text: #D2D6DA;--footer-muted: #8A929A;--footer-border: #333A42;--shadow-sm: 0 1px 3px rgba(37, 43, 49, .04), 0 1px 2px rgba(37, 43, 49, .03);--shadow-md: 0 4px 12px rgba(37, 43, 49, .06), 0 1px 3px rgba(37, 43, 49, .04);--shadow-lg: 0 12px 30px rgba(37, 43, 49, .08), 0 4px 8px rgba(37, 43, 49, .04);--shadow-hover: 0 16px 36px rgba(37, 43, 49, .12);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 22px;--radius-full: 9999px;--container-max: 1180px;--content-max: 820px;--font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;--font-mono: 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#252b3126}.btn-primary:hover{background-color:#16191d;border-color:#16191d;transform:translateY(-1px);box-shadow:0 6px 16px #252b3138}.btn-secondary{background-color:#fff;color:var(--text-primary);border-color:var(--border-color);box-shadow:var(--shadow-sm)}.btn-secondary:hover{background-color:var(--bg-card-subtle);border-color:var(--text-muted);transform:translateY(-1px)}.btn-outline{background-color:transparent;color:var(--text-primary);border-color:var(--border-color)}.btn-outline:hover{background-color:#252b310a;border-color:var(--text-secondary)}.btn-steel{background-color:var(--accent-steel);color:#fff}.btn-steel:hover{background-color:var(--accent-steel-hover)}.badge{display:inline-flex;align-items:center;gap:4px;padding:4px 10px;font-size:.75rem;font-weight:600;border-radius:var(--radius-full);letter-spacing:.03em;text-transform:uppercase}.badge-steel{background-color:#56748a1f;color:var(--accent-steel);border:1px solid rgba(86,116,138,.25)}.badge-dark{background-color:var(--text-primary);color:#fff}.badge-silver{background-color:var(--bg-silver);color:var(--text-secondary)}.card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:28px;box-shadow:var(--shadow-sm);transition:all .3s cubic-bezier(.16,1,.3,1)}.card:hover{box-shadow:var(--shadow-md);border-color:#d3d7da;transform:translateY(-2px)}.hero-gradient-surface{background:radial-gradient(circle at 50% 20%,#e4e6e7cc,#f7f7f500 70%),linear-gradient(180deg,#e2e5e7,#eceeed 40%,#f7f7f5);position:relative;overflow:hidden}.hero-gradient-surface:before{content:"";position:absolute;top:0;left:0;right:0;height:100%;background-image:radial-gradient(ellipse at 50% -20%,rgba(86,116,138,.1) 0%,transparent 60%),linear-gradient(135deg,rgba(255,255,255,.4) 0%,transparent 50%);pointer-events:none}.asset-placeholder{background:linear-gradient(135deg,#eceeed,#e2e5e7);border:1px dashed 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var(--border-color);text-align:left}.prose th{background-color:var(--bg-silver-light);font-weight:600;color:var(--text-primary)}.prose a{color:var(--accent-steel);text-decoration:underline;text-underline-offset:3px}.prose a:hover{color:var(--accent-steel-hover)}.breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:8px;font-size:.85rem;color:var(--text-muted);margin-bottom:24px}.text-center{text-align:center}.justify-center{justify-content:center}.breadcrumb a{color:var(--text-secondary)}.breadcrumb a:hover{color:var(--text-primary)}.breadcrumb-separator{color:var(--border-color)}@media (max-width: 992px){h1{font-size:1.95rem}h2{font-size:1.5rem}.card{padding:22px}}@media (max-width: 768px){h1{font-size:1.7rem}h2{font-size:1.35rem}.container{padding-left:16px;padding-right:16px}.btn{width:100%}}.site-header[data-astro-cid-3ef6ksr2]{position:sticky;top:0;z-index:1000;background:#f7f7f5eb;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid 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14px;font-size:1.05rem;font-weight:500;color:var(--text-secondary);border-radius:var(--radius-md)}.mobile-nav-link[data-astro-cid-3ef6ksr2].active{background-color:var(--bg-card-subtle);color:var(--text-primary);font-weight:600}.mobile-cta-group[data-astro-cid-3ef6ksr2]{display:flex;flex-direction:column;gap:10px;padding-top:14px;border-top:1px solid var(--border-color)}.mobile-btn[data-astro-cid-3ef6ksr2]{width:100%;justify-content:center}@media (max-width: 900px){.desktop-nav[data-astro-cid-3ef6ksr2],.login-link[data-astro-cid-3ef6ksr2],.header-cta[data-astro-cid-3ef6ksr2]{display:none}.mobile-toggle[data-astro-cid-3ef6ksr2]{display:flex}}.site-footer[data-astro-cid-sz7xmlte]{background-color:var(--footer-bg);color:var(--footer-text);border-top:1px solid 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.name[data-astro-cid-sz7xmlte]{font-size:1.18rem;font-weight:700;color:#fff}.footer-logo-title[data-astro-cid-sz7xmlte] .en[data-astro-cid-sz7xmlte]{font-size:.68rem;font-weight:500;color:var(--footer-muted);letter-spacing:.08em}.brand-desc[data-astro-cid-sz7xmlte]{color:var(--footer-muted);font-size:.88rem;line-height:1.65}.brand-tags[data-astro-cid-sz7xmlte]{display:flex;gap:8px;flex-wrap:wrap}.f-tag[data-astro-cid-sz7xmlte]{font-size:.72rem;background:#ffffff0f;color:#bac2cb;padding:3px 8px;border-radius:var(--radius-sm);border:1px solid rgba(255,255,255,.08)}.col-title[data-astro-cid-sz7xmlte]{font-size:.95rem;font-weight:600;color:#fff;margin-bottom:18px;letter-spacing:-.01em}.footer-links[data-astro-cid-sz7xmlte]{list-style:none;display:flex;flex-direction:column;gap:10px}.footer-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:var(--footer-muted);transition:color .2s ease,transform .2s ease;display:inline-block}.footer-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:#fff;transform:translate(2px)}.footer-bottom[data-astro-cid-sz7xmlte]{border-top:1px solid rgba(255,255,255,.08);padding-top:28px;display:flex;flex-direction:column;gap:16px}.footer-disclaimer[data-astro-cid-sz7xmlte]{font-size:.78rem;color:#6c747d;line-height:1.6}.footer-meta[data-astro-cid-sz7xmlte]{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px;font-size:.82rem;color:var(--footer-muted)}.footer-meta-links[data-astro-cid-sz7xmlte]{display:flex;align-items:center;gap:8px}.footer-meta-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]{color:var(--footer-muted)}.footer-meta-links[data-astro-cid-sz7xmlte] a[data-astro-cid-sz7xmlte]:hover{color:#fff}.dot[data-astro-cid-sz7xmlte]{color:#fff3}@media (max-width: 900px){.footer-top[data-astro-cid-sz7xmlte]{grid-template-columns:1fr 1fr}.footer-brand[data-astro-cid-sz7xmlte]{grid-column:1 / -1;max-width:100%}}@media (max-width: 580px){.site-footer[data-astro-cid-sz7xmlte]{padding-top:48px}.footer-top[data-astro-cid-sz7xmlte]{grid-template-columns:1fr;gap:32px}.footer-meta[data-astro-cid-sz7xmlte]{flex-direction:column;align-items:flex-start}}