:root{--rf-font-sans: "PingFang TC", "PingFang HK", "PingFang SC", "Hiragino Sans GB", "Microsoft JhengHei", "Noto Sans TC", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--rf-font-mono: "SF Mono", "JetBrains Mono", "Cascadia Code", "Roboto Mono", "Menlo", "Consolas", monospace;--rf-color-up: #c0392b;--rf-color-down: #1f8a5b;--rf-color-flat: #8a93a6;--rf-color-primary: #1e2a4a;--rf-color-primary-rgb: 30, 42, 74;--rf-color-accent: #2f4474;--rf-color-accent-rgb: 47, 68, 116;--rf-color-gold: #b08a4f;--rf-color-gold-rgb: 176, 138, 79;--rf-topbar-height: 64px;--rf-max-width: 1200px;--rf-pad-x: 24px;--rf-gap: 16px;--rf-radius-xl: 16px;--rf-radius-lg: 14px;--rf-radius-md: 10px;--rf-radius-sm: 6px;--rf-page: #f7f8fb;--rf-surface: #ffffff;--rf-card: #ffffff;--rf-text: #14182a;--rf-text-1: #2a3148;--rf-text-2: #4a5267;--rf-text-3: #868ea0;--rf-text-extreme: #0a0e1a;--rf-divider: #eceef3;--rf-border: #e6e8ef;--rf-control-bg: #f1f3f8;--rf-control-bg-hover: #e9ecf3;--rf-ring: rgba(var(--rf-color-primary-rgb), .18);--rf-card-shadow: 0 1px 2px rgba(20, 24, 42, .04), 0 1px 3px rgba(20, 24, 42, .06);--rf-card-shadow-hover: 0 6px 16px rgba(20, 24, 42, .08), 0 2px 6px rgba(20, 24, 42, .05)}*,*:before,*:after{box-sizing:border-box}html{scrollbar-gutter:stable;scroll-behavior:smooth}html,body{margin:0;padding:0}body{min-height:100vh;background:var(--rf-page);color:var(--rf-text);font-family:var(--rf-font-sans);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}a{color:inherit;text-decoration:none}img{max-width:100%;display:block}h1,h2,h3,h4,p{margin:0}.rf-num,.rf-mono{font-family:var(--rf-font-mono);font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1}*{scrollbar-width:thin;scrollbar-color:rgba(134,142,160,.3) transparent}*::-webkit-scrollbar{width:6px;height:6px}*::-webkit-scrollbar-track{background:transparent}*::-webkit-scrollbar-thumb{background:#868ea04d;border-radius:3px}*::-webkit-scrollbar-thumb:hover{background:#868ea080}.rf-container{width:100%;max-width:var(--rf-max-width);margin:0 auto;padding-left:var(--rf-pad-x);padding-right:var(--rf-pad-x)}.rf-card{background:var(--rf-card);border:1px solid var(--rf-border);border-radius:var(--rf-radius-lg);box-shadow:var(--rf-card-shadow);padding:24px}.rf-card--hover{transition:box-shadow .22s ease,transform .22s ease,border-color .22s ease}.rf-card--hover:hover{box-shadow:var(--rf-card-shadow-hover);border-color:rgba(var(--rf-color-primary-rgb),.22);transform:translateY(-2px)}.rf-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;height:42px;padding:0 22px;border:1px solid transparent;border-radius:999px;font-size:14px;font-weight:600;font-family:inherit;cursor:pointer;transition:background .18s ease,border-color .18s ease,color .18s ease;white-space:nowrap}.rf-btn--primary{background:var(--rf-color-primary);border-color:var(--rf-color-primary);color:#fff}.rf-btn--primary:hover{background:var(--rf-color-accent);border-color:var(--rf-color-accent)}.rf-btn--ghost{background:transparent;border-color:var(--rf-border);color:var(--rf-text)}.rf-btn--ghost:hover{border-color:var(--rf-color-primary);color:var(--rf-color-primary)}.rf-section{padding:72px 0}.rf-section--tight{padding:48px 0}.band{background:var(--rf-surface);border-top:1px solid var(--rf-divider);border-bottom:1px solid var(--rf-divider)}main>:last-child{padding-top:36px;padding-bottom:36px}main>:last-child.band{border-bottom:none}.rf-site-grid{display:grid;grid-template-columns:minmax(260px,1.4fr) 2fr;gap:32px 48px;align-items:start}.rf-eyebrow{font-size:13px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--rf-color-gold)}.rf-section-title{margin-top:12px;font-size:30px;font-weight:700;letter-spacing:.01em;color:var(--rf-text)}.rf-section-lead{margin-top:14px;max-width:680px;font-size:15px;line-height:1.9;color:var(--rf-text-2)}.rf-page-head__inner{position:relative;padding-top:64px;padding-bottom:64px}.rf-page-head__title{margin-top:16px;font-size:40px;line-height:1.22;font-weight:800;letter-spacing:0;color:var(--rf-text)}.rf-page-head__lead{margin-top:20px;max-width:640px;font-size:16px;line-height:1.9;color:var(--rf-text-2)}@media(max-width:768px){.rf-container{padding-left:16px;padding-right:16px}.rf-section{padding:48px 0}.rf-section-title{font-size:24px}.rf-page-head__inner{padding-top:48px;padding-bottom:48px}.rf-page-head__title{font-size:30px}main>:last-child{padding-top:28px;padding-bottom:28px}.rf-site-grid{grid-template-columns:1fr;gap:28px}}.site-header[data-astro-cid-ctg3m53h]{position:sticky;top:0;z-index:100;background:#ffffffd1;backdrop-filter:blur(16px) saturate(180%);-webkit-backdrop-filter:blur(16px) saturate(180%);border-bottom:1px solid var(--rf-divider)}.site-header__inner[data-astro-cid-ctg3m53h]{height:var(--rf-topbar-height);display:flex;align-items:center;gap:24px}.site-header__brand[data-astro-cid-ctg3m53h]{display:flex;align-items:center;flex-shrink:0}.site-header__logo[data-astro-cid-ctg3m53h]{height:34px;width:auto;object-fit:contain}.site-header__nav[data-astro-cid-ctg3m53h]{display:flex;align-items:center;gap:4px;flex:1}.site-header__link[data-astro-cid-ctg3m53h]{position:relative;padding:5px 15px;font-size:14px;font-weight:500;color:var(--rf-text-2);border-radius:var(--rf-radius-sm);transition:color .18s ease,background .18s ease}.site-header__link[data-astro-cid-ctg3m53h]:hover{color:var(--rf-text);background:var(--rf-control-bg)}.site-header__link[data-astro-cid-ctg3m53h].is-active{color:var(--rf-color-primary);font-weight:600}.site-header__link[data-astro-cid-ctg3m53h].is-active:after{content:"";position:absolute;left:15px;right:15px;bottom:0;height:2px;border-radius:2px;background:var(--rf-color-primary)}.site-header__actions[data-astro-cid-ctg3m53h]{display:flex;align-items:center;gap:12px;margin-left:auto}.site-header__login[data-astro-cid-ctg3m53h]{height:38px;padding:0 20px}.site-header__toggle[data-astro-cid-ctg3m53h]{display:none;flex-direction:column;justify-content:center;gap:4px;width:40px;height:38px;padding:0 9px;background:var(--rf-control-bg);border:1px solid transparent;border-radius:var(--rf-radius-sm);cursor:pointer}.site-header__toggle[data-astro-cid-ctg3m53h] span[data-astro-cid-ctg3m53h]{display:block;height:2px;width:100%;background:var(--rf-text);border-radius:2px;transition:transform .2s ease,opacity .2s ease}.site-header__mobile[data-astro-cid-ctg3m53h]{display:none;border-top:1px solid var(--rf-divider);background:var(--rf-surface);padding:12px 0 18px}.site-header__mobile[data-astro-cid-ctg3m53h] .rf-container[data-astro-cid-ctg3m53h]{display:flex;flex-direction:column;gap:4px}.site-header__mobile-link[data-astro-cid-ctg3m53h]{padding:12px 4px;font-size:15px;font-weight:500;color:var(--rf-text-2);border-bottom:1px solid var(--rf-divider)}.site-header__mobile-link[data-astro-cid-ctg3m53h].is-active{color:var(--rf-color-primary);font-weight:600}.site-header__mobile-login[data-astro-cid-ctg3m53h]{margin-top:14px;width:100%}@media(max-width:768px){.site-header__nav[data-astro-cid-ctg3m53h],.site-header__login[data-astro-cid-ctg3m53h]{display:none}.site-header__toggle[data-astro-cid-ctg3m53h]{display:flex}.site-header[data-astro-cid-ctg3m53h].is-open .site-header__mobile[data-astro-cid-ctg3m53h]{display:block}.site-header[data-astro-cid-ctg3m53h].is-open .site-header__toggle[data-astro-cid-ctg3m53h] span[data-astro-cid-ctg3m53h]:nth-child(1){transform:translateY(6px) rotate(45deg)}.site-header[data-astro-cid-ctg3m53h].is-open .site-header__toggle[data-astro-cid-ctg3m53h] span[data-astro-cid-ctg3m53h]:nth-child(2){opacity:0}.site-header[data-astro-cid-ctg3m53h].is-open .site-header__toggle[data-astro-cid-ctg3m53h] span[data-astro-cid-ctg3m53h]:nth-child(3){transform:translateY(-6px) rotate(-45deg)}}.site-footer[data-astro-cid-gcn2mc3v]{margin-top:0;border-top:1px solid var(--rf-divider);background:var(--rf-surface)}.site-footer__inner[data-astro-cid-gcn2mc3v]{padding-top:36px;padding-bottom:36px}.site-footer__brand[data-astro-cid-gcn2mc3v]{min-width:0}.site-footer__logo[data-astro-cid-gcn2mc3v]{height:34px;width:auto;object-fit:contain}.site-footer__intro[data-astro-cid-gcn2mc3v]{margin-top:16px;max-width:380px;color:var(--rf-text-3);font-size:13px;line-height:1.85}.site-footer__cols[data-astro-cid-gcn2mc3v]{display:grid;grid-template-columns:repeat(3,1fr);gap:24px 32px}.site-footer__col[data-astro-cid-gcn2mc3v]{min-width:0}.site-footer__col-title[data-astro-cid-gcn2mc3v]{margin:0 0 14px;color:var(--rf-text);font-size:13px;font-weight:600;letter-spacing:.02em}.site-footer__list[data-astro-cid-gcn2mc3v]{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:11px}.site-footer__list[data-astro-cid-gcn2mc3v] li[data-astro-cid-gcn2mc3v]{margin:0;padding:0}.site-footer__link[data-astro-cid-gcn2mc3v]{display:inline-block;color:var(--rf-text-2);font-size:13px;line-height:1.4;transition:color .18s ease}a[data-astro-cid-gcn2mc3v].site-footer__link:hover{color:var(--rf-color-primary)}.site-footer__link--static[data-astro-cid-gcn2mc3v]{cursor:default;color:var(--rf-text-3)}.site-footer__disclaimer[data-astro-cid-gcn2mc3v]{margin-top:28px;padding:16px 20px;border:1px solid var(--rf-border);border-radius:var(--rf-radius-md);background:var(--rf-page);display:flex;flex-direction:column;gap:8px}.site-footer__disclaimer[data-astro-cid-gcn2mc3v] p[data-astro-cid-gcn2mc3v]{margin:0;color:var(--rf-text-3);font-size:12px;line-height:1.45}.site-footer__bottom[data-astro-cid-gcn2mc3v]{margin-top:24px;padding-top:22px;border-top:1px solid var(--rf-divider);display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:12px 24px}.site-footer__meta[data-astro-cid-gcn2mc3v]{display:flex;align-items:center;flex-wrap:wrap;gap:8px 14px;color:var(--rf-text-3);font-size:12px;line-height:1.6}.site-footer__meta[data-astro-cid-gcn2mc3v]>[data-astro-cid-gcn2mc3v]+[data-astro-cid-gcn2mc3v]{position:relative;padding-left:14px}.site-footer__meta[data-astro-cid-gcn2mc3v]>[data-astro-cid-gcn2mc3v]+[data-astro-cid-gcn2mc3v]:before{content:"";position:absolute;left:0;top:50%;width:1px;height:12px;transform:translateY(-50%);background:var(--rf-divider)}.site-footer__meta-link[data-astro-cid-gcn2mc3v]{color:var(--rf-text-3);font-size:12px;line-height:1.6;transition:color .18s ease}.site-footer__meta-link[data-astro-cid-gcn2mc3v]:hover{color:var(--rf-color-primary)}.site-footer__legal[data-astro-cid-gcn2mc3v]{list-style:none;margin:0;padding:0;display:flex;align-items:center;flex-wrap:wrap;gap:6px 14px}.site-footer__legal[data-astro-cid-gcn2mc3v] li[data-astro-cid-gcn2mc3v]+li[data-astro-cid-gcn2mc3v]{position:relative;padding-left:14px}.site-footer__legal[data-astro-cid-gcn2mc3v] li[data-astro-cid-gcn2mc3v]+li[data-astro-cid-gcn2mc3v]:before{content:"";position:absolute;left:0;top:50%;width:1px;height:12px;transform:translateY(-50%);background:var(--rf-divider)}.site-footer__legal-link[data-astro-cid-gcn2mc3v]{color:var(--rf-text-2);font-size:12px;transition:color .18s ease}.site-footer__legal-link[data-astro-cid-gcn2mc3v]:hover{color:var(--rf-color-primary)}@media(max-width:920px){.site-footer__intro[data-astro-cid-gcn2mc3v]{max-width:540px}}@media(max-width:768px){.site-footer[data-astro-cid-gcn2mc3v]{margin-top:0}.site-footer__inner[data-astro-cid-gcn2mc3v]{padding-top:28px;padding-bottom:28px}.site-footer__cols[data-astro-cid-gcn2mc3v]{grid-template-columns:1fr 1fr;gap:22px 20px}.site-footer__disclaimer[data-astro-cid-gcn2mc3v]{margin-top:26px;padding:16px}.site-footer__bottom[data-astro-cid-gcn2mc3v]{flex-direction:column;align-items:flex-start;gap:14px}}@media(max-width:420px){.site-footer__cols[data-astro-cid-gcn2mc3v]{grid-template-columns:1fr;gap:22px}}.back-start[data-astro-cid-anxdgt7n]{position:fixed;right:max(var(--rf-pad-x),calc((100vw - var(--rf-max-width)) / 2 + var(--rf-pad-x)));bottom:calc(24px + env(safe-area-inset-bottom,0px));z-index:120;display:inline-flex;align-items:center;justify-content:center;gap:7px;height:42px;max-width:calc(100vw - var(--rf-pad-x) * 2);padding:0 16px;border:1px solid rgba(var(--rf-color-primary-rgb),.14);border-radius:var(--rf-radius-sm);background:var(--rf-surface);color:var(--rf-color-primary);box-shadow:var(--rf-card-shadow-hover);font-family:inherit;font-size:13px;font-weight:600;line-height:1;white-space:nowrap;cursor:pointer;visibility:hidden;opacity:0;pointer-events:none;transform:translateY(12px);transition:visibility .18s ease,opacity .18s ease,transform .18s ease,border-color .18s ease,box-shadow .18s ease,background .18s ease}.back-start[data-astro-cid-anxdgt7n].is-visible{visibility:visible;opacity:1;pointer-events:auto;transform:translateY(0)}.back-start[data-astro-cid-anxdgt7n]:hover{transform:translateY(-1px);border-color:rgba(var(--rf-color-primary-rgb),.28);background:var(--rf-control-bg)}.back-start[data-astro-cid-anxdgt7n]:focus-visible{outline:none;box-shadow:var(--rf-card-shadow-hover),0 0 0 3px var(--rf-ring)}.back-start[data-astro-cid-anxdgt7n] svg[data-astro-cid-anxdgt7n]{width:18px;height:18px;flex:0 0 auto;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}@media(max-width:768px){.back-start[data-astro-cid-anxdgt7n]{right:16px;bottom:calc(18px + env(safe-area-inset-bottom,0px));height:40px;padding:0 13px;font-size:12px}}@media(prefers-reduced-motion:reduce){.back-start[data-astro-cid-anxdgt7n]{transition:none}}