@font-face{font-family:Orbitron;src:url('/assets/fonts/Orbitron-VariableFont_wght.ttf') format('truetype');font-display:swap;font-weight:400 900}
:root{color-scheme:dark;--bg:#090d0f;--surface:#101719;--ink:#f3f1e9;--muted:#a1acae;--line:#253033;--accent:#a7edeb}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:28px}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 -apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;-webkit-font-smoothing:antialiased}a{color:inherit;text-underline-offset:4px}a:hover{color:var(--accent)}a:focus-visible,summary:focus-visible{outline:2px solid var(--accent);outline-offset:6px;border-radius:2px}.container{width:min(1120px,calc(100% - 64px));margin-inline:auto}.skip-link{position:absolute;left:24px;top:-70px;padding:10px 16px;background:var(--accent);color:var(--bg);z-index:5}.skip-link:focus{top:12px}.site-header{border-bottom:1px solid var(--line)}.nav-shell{min-height:90px;display:flex;align-items:center;justify-content:space-between;gap:24px}.wordmark{font:800 20px/1 Orbitron,sans-serif;letter-spacing:.07em;text-decoration:none}.nav-actions{display:flex;align-items:center;gap:26px;font-size:13px}.nav-actions a{text-decoration:none}.nav-actions .download{padding:10px 17px;color:var(--bg);background:var(--ink);border-radius:5px;font-weight:650}.nav-actions .download:hover{background:var(--accent)}.document-header{padding:82px 0 48px;border-bottom:1px solid var(--line)}.eyebrow{font-size:11px;font-weight:700;letter-spacing:.17em;text-transform:uppercase;color:var(--accent);margin:0 0 20px}.document-header h1{max-width:880px;font-size:clamp(40px,6.5vw,76px);font-weight:550;line-height:1.1;letter-spacing:-.055em;margin:0 0 24px}.document-header .lead{font-size:19px;line-height:1.75;max-width:680px;color:var(--muted);margin:0}.document-header .meta{font-size:12px;color:var(--muted);margin:20px 0 0}.document-layout{display:grid;grid-template-columns:220px minmax(0,1fr);gap:64px;padding:46px 0 100px}.document-index{align-self:start;position:sticky;top:28px}.document-index p{font-size:10px;letter-spacing:.15em;color:var(--muted);text-transform:uppercase;margin:0 0 18px}.document-index a{display:block;font-size:13px;color:var(--muted);text-decoration:none;padding:7px 0}.document-index a:hover{color:var(--accent)}.document-body{max-width:760px;min-width:0}.document-body>section{padding-bottom:24px;margin-bottom:26px;border-bottom:1px solid var(--line)}.document-body>section:last-child{border:0}.document-body h2{font-size:25px;line-height:1.3;letter-spacing:-.02em;font-weight:550;margin:0 0 18px}.document-body h3{font-size:17px;font-weight:600;margin:26px 0 8px}.document-body p{color:var(--muted);margin:0 0 18px}.document-body strong{color:var(--ink);font-weight:550}.document-body ul,.document-body ol{padding-left:22px;color:var(--muted)}.document-body li{padding-left:5px;margin-bottom:12px}.note{border-left:2px solid var(--accent);background:var(--surface);padding:20px 24px;margin:24px 0}.note p:last-child{margin-bottom:0}.step-list{counter-reset:step;list-style:none;padding:0!important}.step-list li{padding:0 0 22px 48px;position:relative;margin-bottom:14px}.step-list li:before{counter-increment:step;content:'0' counter(step);position:absolute;left:0;top:3px;font:600 13px/1.5 Orbitron,sans-serif;color:var(--accent)}.step-list h3{margin:0 0 7px}.step-list p{margin:0}.faq-item{border-top:1px solid var(--line)}.faq-item:last-child{border-bottom:1px solid var(--line)}.faq-item summary{cursor:pointer;padding:22px 34px 22px 0;list-style:none;position:relative;font-size:17px;line-height:1.5}.faq-item summary::-webkit-details-marker{display:none}.faq-item summary:after{content:'+';position:absolute;right:4px;top:22px;color:var(--accent);font-size:22px;line-height:1}.faq-item[open] summary:after{content:'−'}.faq-item p{padding:0 26px 5px 0;font-size:15px}.contact-link{font-size:clamp(15px,2.3vw,23px);overflow-wrap:anywhere}.site-footer{border-top:1px solid var(--line)}.footer-grid{padding:36px 0 42px;display:flex;align-items:flex-start;justify-content:space-between;gap:24px}.footer-grid p{font-size:12px;color:var(--muted);margin:13px 0 0}.footer-grid nav{display:flex;flex-wrap:wrap;gap:14px 24px;font-size:12px;color:var(--muted)}.footer-grid nav a{text-decoration:none}[lang='zh-Hans'] .document-header h1{letter-spacing:-.04em;font-size:clamp(38px,5.8vw,65px)}[lang='zh-Hans'] .document-body{line-height:1.9}
@media(max-width:760px){.container{width:calc(100% - 40px)}.nav-shell{min-height:74px;gap:14px}.wordmark{font-size:17px}.nav-actions{gap:16px;font-size:12px}.nav-actions .download{padding:8px 11px}.document-header{padding:54px 0 34px}.document-header .lead{font-size:17px}.document-layout{grid-template-columns:1fr;gap:32px;padding:28px 0 64px}.document-index{position:static;display:flex;flex-wrap:wrap;gap:3px 22px;border-bottom:1px solid var(--line);padding-bottom:22px}.document-index p{flex-basis:100%;margin-bottom:6px}.document-body h2{font-size:23px}.footer-grid{flex-direction:column;gap:25px}.note{padding:18px}.faq-item summary{font-size:16px}}@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}