:root{color-scheme:light dark;--bg: light-dark(#f7f6f2, #17191d);--surface: light-dark(#fffefa, #202328);--soft: light-dark(#efede7, #2a2d33);--text: light-dark(#242a32, #f0efeb);--muted: light-dark(#626770, #b5b7bd);--line: light-dark(#dedbd3, #3c4047);--control-line: light-dark(#8d8b84, #777d87);--accent: light-dark(#303e50, #d3bea0);--on-accent: light-dark(#fffefa, #242321);--accent-hover: light-dark(#415269, #e0cdb0);--focus: light-dark(#426990, #a9c8e4);--gold: light-dark(#927650, #c7ae87);--gold-dark: light-dark(#806443, #c7ae87);--heading-accent: light-dark(#6d665b, #c7baa6);--panel-shadow: 0 4px 22px light-dark(#242a3205, #0000001c);--welcome-glow: light-dark(#ded6c340, #6e65531f);--scrim: #10131899;--nav-bg: light-dark(#efede7, #1d2025);--nav-text: light-dark(#30353d, #e9e6df);--nav-muted: light-dark(#575e67, #afb3bb);--nav-line: light-dark(#d7d3ca, #393d44);--nav-hover: light-dark(#e8e4db, #292d34);--nav-active: light-dark(#e3ddd1, #34312c);--nav-accent: light-dark(#775d3e, 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svg{display:block;width:clamp(18px,1.125rem,23px);height:clamp(18px,1.125rem,23px);fill:none;stroke:currentColor;stroke-width:1.65;stroke-linecap:round;stroke-linejoin:round}.appearance-letter{display:inline-flex;align-items:center;font-family:ui-sans-serif,system-ui,sans-serif;font-size:clamp(16px,1rem,22px);font-weight:500;letter-spacing:-.06em;line-height:1}.appearance-letter span{margin-left:1px;font-size:.7em;letter-spacing:0}.appearance-letter-reset{font-family:Georgia,serif;font-size:clamp(17px,1.0625rem,23px);letter-spacing:-.04em}.appearance-hint{position:fixed;z-index:1200;width:max-content;max-width:min(18rem,calc(100vw - 20px));padding:8px 11px;border:1px solid var(--line);border-radius:8px;background:var(--panel, var(--surface));color:var(--text, var(--ink));box-shadow:0 4px 18px #00000018;font-size:.8125rem;line-height:1.5;font-weight:400;text-align:left;overflow-wrap:anywhere}.appearance-hint[hidden]{display:none}.royal-topbar>.topbar-links{font-size:.875rem;gap:18px;flex-wrap:wrap}@media(max-width:1200px){.royal-topbar>p{display:none}.royal-topbar>.appearance-controls{margin-left:0}}@media(pointer:coarse){.royal-topbar>.appearance-controls{gap:8px}.appearance-segment{padding:2px;gap:0}.appearance-controls .appearance-action{flex-basis:44px;min-width:44px;width:44px;min-height:44px;height:44px}}@media(max-width:600px){.royal-topbar{min-height:64px;padding:8px 16px;gap:10px}.royal-topbar>.appearance-controls{margin-left:auto;margin-right:auto}.royal-topbar>.topbar-links{display:none}}@media(prefers-reduced-motion:reduce){.appearance-controls .appearance-action{transition:none}}:lang(zh) h1,:lang(zh) h2,:lang(zh) h3,:lang(zh) .metric-value{letter-spacing:0}:lang(zh) h1,:lang(zh) h2,:lang(zh) h3{line-height:1.5}:lang(zh) 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18px;fill:none;stroke:currentColor;stroke-width:1.6}.locale-code{font-family:ui-sans-serif,system-ui,sans-serif;font-size:clamp(12px,.75rem,16px);font-weight:600;letter-spacing:.025em}.locale-trigger:hover,.locale-trigger[aria-expanded=true]{background:var(--panel, var(--surface))}.locale-trigger:focus-visible,.locale-menu button:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.locale-menu{position:fixed;z-index:1250;width:min(17rem,calc(100vw - 24px));max-height:calc(100dvh - 24px);overflow:auto;padding:6px;border:1px solid var(--line);border-radius:12px;color:var(--text, var(--ink));background:var(--panel, var(--surface));box-shadow:0 8px 30px #00000020}.locale-menu[hidden]{display:none}.locale-menu button{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;min-height:44px;padding:10px 12px;margin:0;border:1px solid transparent;border-radius:7px;color:inherit;background:transparent;box-shadow:none;font:inherit;font-size:.9375rem;line-height:1.4;text-align:left;overflow-wrap:anywhere;cursor:pointer}.locale-menu button:hover,.locale-menu button:focus-visible{background:var(--soft, var(--surface))}.locale-menu button[aria-checked=true]{background:var(--soft, var(--surface));font-weight:600}.locale-check{flex:0 0 auto;visibility:hidden}[aria-checked=true]>.locale-check{visibility:visible}@media(max-width:1200px){.royal-topbar>.header-preferences{margin-left:0}}@media(max-width:600px){.royal-topbar>.header-preferences{margin-inline:auto;justify-content:center}.locale-trigger{min-width:58px;padding-inline:7px}}:root{font:16px/1.65 ui-sans-serif,system-ui,-apple-system,Segoe 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2rem);padding:.75rem 1rem;border:1px solid var(--control-line);border-radius:8px;background:var(--surface)}.information-body .skip:focus{top:1rem;transform:none}.information-body main:focus{outline:none}.information-body .info-header{display:flex;align-items:center;flex-wrap:wrap;gap:14px 24px;width:min(100%,1200px);min-height:88px;height:auto;padding:18px 28px;margin:auto;border-bottom:1px solid var(--line)}.info-brand{display:inline-flex;align-items:center;gap:10px;min-width:0;min-height:44px;text-decoration:none;font-size:1rem;font-weight:750;line-height:1.25;letter-spacing:-.035em}.info-brand img{display:block;width:36px;height:36px;flex:0 0 36px}.info-brand em{font-weight:500;font-style:normal}.info-header-link{display:inline-flex;align-items:center;gap:9px;min-height:44px;padding:4px 0;color:var(--muted)!important;font-size:.82rem;text-decoration:none}.info-header-link:hover{color:var(--text)!important;text-decoration:underline}.information-body 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48px}.info-card{min-width:0;padding:clamp(20px,2.5vw,30px);border:1px solid var(--line);border-radius:18px;background:var(--surface);box-shadow:var(--panel-shadow)}.info-card-number{display:inline-flex;align-items:center;justify-content:center;min-width:36px;min-height:36px;padding:3px 8px;margin-bottom:18px;border:1px solid var(--line);border-radius:9px;color:var(--gold-dark);background:var(--soft);font-size:.75rem;font-weight:750;font-variant-numeric:tabular-nums}.info-card h2{margin:0 0 9px;font-size:1.05rem;font-weight:700;letter-spacing:-.025em;line-height:1.35}.info-card p{margin:0;font-size:.88rem;line-height:1.75;color:var(--muted)}.info-card .info-text-link{margin-top:12px}.info-reading{display:grid;grid-template-columns:minmax(0,220px) minmax(0,1fr);gap:50px;align-items:start;padding-top:8px}.info-toc{position:sticky;top:24px;min-width:0;border-top:2px solid var(--gold);padding-top:16px}.info-toc h2{font-size:.78rem;margin:0 0 9px;color:var(--gold-dark)}.info-toc 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0;color:var(--gold-dark)!important;font-size:.86rem;font-weight:650;line-height:1.5}.info-action{display:inline-flex;align-items:center;justify-content:center;max-width:100%;min-width:0;min-height:48px;margin:9px 0;padding:11px 17px;border:1px solid var(--accent);border-radius:9px;background:var(--accent);color:var(--on-accent)!important;font-size:.9rem;font-weight:650;line-height:1.5;text-align:center;text-decoration:none}.info-action:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.info-callout{min-width:0;margin:30px 0 0;padding:24px;border:1px solid var(--line);border-left:3px solid var(--gold);border-radius:12px;background:var(--soft)}.info-callout h2{margin:0 0 8px;font-size:1.2rem}.info-callout p{margin:0;color:var(--muted)}.info-support-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.48fr);gap:34px;align-items:start}.info-faq{border:1px solid var(--line);border-radius:12px;background:var(--surface);margin:0 0 12px}.info-faq summary{display:flex;align-items:center;justify-content:space-between;gap:16px;cursor:pointer;min-height:56px;padding:17px 20px;list-style:none;font-weight:650;font-size:.95rem;line-height:1.5}.info-faq summary::-webkit-details-marker{display:none}.info-faq summary>span{flex:none;color:var(--gold-dark);font-size:1.25rem;font-weight:400}.info-faq[open] summary>span{transform:rotate(45deg)}.info-faq-body{padding:0 20px 20px}.info-faq-body p{font-size:.9rem}.info-steps{margin:0;padding-left:1.3rem;color:var(--muted);font-size:.9rem;line-height:1.8}.info-steps li+li{margin-top:12px}.info-contact-card{position:sticky;top:24px;min-width:0;padding:28px;border:1px solid var(--line);border-top:3px solid var(--gold);border-radius:16px;background:var(--soft)}.info-contact-card h2{margin:0 0 16px;font:500 1.65rem/1.25 Georgia,Times New Roman,serif;letter-spacing:-.03em}.info-contact-card p{font-size:.86rem;line-height:1.8;color:var(--muted);margin:0 0 14px}.info-contact-card 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.info-article{max-width:none}}@media(max-width:760px){.info-cards{grid-template-columns:minmax(0,1fr);gap:14px;margin-bottom:32px}.info-card-number{margin-bottom:12px}.info-reading{grid-template-columns:minmax(0,1fr);gap:32px}.info-toc{position:static}.info-toc ol{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 18px}.info-hero{margin-bottom:28px}.info-section{margin-bottom:26px;padding-bottom:25px}}@media(max-width:480px){.information-body .info-header{padding:14px 16px;gap:10px 16px}.information-body .info-header>.header-preferences{width:100%;margin:0;justify-content:flex-start;gap:8px}.info-header-link{font-size:.76rem}.info-main,.info-footer{width:calc(100% - 32px)}.info-main{padding-top:34px}.info-hero{text-align:left}.info-hero h1{font-size:2.4rem}.info-lead{font-size:1rem}.info-toc ol{grid-template-columns:minmax(0,1fr)}.info-contact-card{padding:23px 20px}.info-faq summary{padding:16px}.info-faq-body{padding:0 16px 18px}.info-footer{margin-top:40px}.info-footer nav{gap:4px 20px}}:root:is([data-size="150"],[data-size="175"],[data-size="200"]) .info-cards,:root:is([data-size="150"],[data-size="175"],[data-size="200"]) .info-reading,:root:is([data-size="150"],[data-size="175"],[data-size="200"]) .info-support-layout{grid-template-columns:minmax(0,1fr)}:root:is([data-size="150"],[data-size="175"],[data-size="200"]) .info-toc,:root:is([data-size="150"],[data-size="175"],[data-size="200"]) .info-contact-card{position:static}@media(prefers-reduced-motion:reduce){.information-body *{scroll-behavior:auto!important}}