:root{--orange:#FF5500;--blue:#155CC3;--ink:#182230;--muted:#475467;--orange-ink:#A8390A;--blue-ink:#104A9F;--line:#D5DFEB;--ease:cubic-bezier(.4,0,.2,1);--page:1200px;--orange-hover:#FF6724;--orange-tint-rgb:255,85,0;--blue-rgb:21,92,195;--canvas-warm:#F7F9FC;--canvas-cool:#F2F6FA;--surface-warm:#FCFDFF;--surface-cool:#F3F6FA;--surface-warm-rgb:252,253,255;--surface-cool-rgb:243,246,250;--heading-emphasis:#182230;--control-line:#7C8DA5;--shadow:0 8px 24px -18px rgba(24,34,48,.18)}
    *,*::before,*::after{box-sizing:border-box}
    html{scroll-behavior:smooth;scroll-padding-top:96px}
    body{margin:0;padding-top:70px;color:var(--ink);font:16px/1.75 system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;overflow-wrap:break-word;background:var(--canvas-warm);}
    ::selection{background:rgba(var(--orange-tint-rgb),0.1430);color:var(--ink)}
    h2,h3,p{margin:0}h2,h3{text-wrap:balance}
    a{color:inherit;text-decoration:none;touch-action:manipulation}
    button,input{font:inherit;color:inherit}
    button{cursor:pointer;border:0;touch-action:manipulation}
    a,button,summary{-webkit-tap-highlight-color:rgba(var(--orange-tint-rgb),0.0975)}
    a:focus-visible,button:focus-visible,input:focus-visible{outline:3px solid var(--blue);outline-offset:4px;border-radius:8px}
    svg{display:block;flex:none;width:24px;height:24px;aspect-ratio:1}
    [hidden]{display:none!important}
    .container{width:min(var(--page),calc(100% - 64px));margin-inline:auto}
    .container-narrow{width:min(1200px,calc(100% - 64px));margin-inline:auto}
    .svg-library{position:absolute;width:0;height:0;overflow:hidden}
    .skip-link{position:fixed;top:10px;left:16px;z-index:100;padding:10px 18px;background:var(--surface-warm);transform:translateY(-160%)}
    .skip-link:focus{transform:none}
    .site-header{position:fixed;inset:0 0 auto;z-index:30;height:70px;border-bottom:1px solid var(--line);background:var(--surface-warm);backdrop-filter:none;-webkit-backdrop-filter:none;}
    .header-inner{height:70px;display:flex;align-items:center;justify-content:space-between;gap:24px}
    .brand-logo{display:inline-flex;align-items:center;gap:10px;min-height:44px;font-size:22px;font-weight:800;letter-spacing:-.8px;white-space:nowrap}
    .brand-logo svg{width:40px;height:40px}
    .main-navigation{display:flex;align-items:center;gap:32px;height:100%;font-size:14px;font-weight:650}
    .main-navigation a{position:relative;display:flex;align-items:center;min-height:44px}
    .main-navigation [aria-current="page"]{color:var(--orange-ink)}
    .main-navigation [aria-current="page"]::after{content:"";position:absolute;bottom:0;left:calc(50% - 9px);width:18px;height:3px;border-radius:3px;background:var(--orange)}
    .main-navigation a:hover,.footer-links-grid a:hover,.brand-logo:hover span{text-decoration:underline;text-decoration-color:var(--orange);text-underline-offset:6px}
    .menu-toggle{display:none;place-items:center;width:44px;height:44px;border-radius:12px;background:rgba(var(--orange-tint-rgb),0.0520)}
    .menu-toggle:hover{background:rgba(var(--orange-tint-rgb),0.0975)}
    .faq-section{position:relative;isolation:isolate;overflow:hidden;padding:32px 0 78px}
    .faq-section::before{content:"";position:absolute;z-index:-1;inset:0;pointer-events:none;background:none;}
    .breadcrumb{display:flex;align-items:center;gap:10px;min-height:44px;color:var(--muted);font-size:12px}
    .breadcrumb a{display:inline-flex;align-items:center;min-height:44px}
    .breadcrumb a:hover{text-decoration:underline;text-decoration-color:var(--orange);text-underline-offset:5px}
    .breadcrumb svg{width:12px;height:12px;color:var(--orange)}
    .intro{text-align:center;margin:28px auto 32px}
    .faq-emblem{display:grid;place-items:center;width:60px;height:60px;aspect-ratio:1;margin:0 auto 20px;border:1px solid rgba(var(--orange-tint-rgb),0.1430);border-radius:19px;background:#FFF1E9;box-shadow:0 10px 26px -15px rgba(var(--orange-tint-rgb),0.1950);color:var(--orange)}
    .faq-emblem svg{width:32px;height:32px}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;color:var(--orange-ink);font-size:11px;font-weight:750;letter-spacing:2px}
    .eyebrow::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--orange)}
    .section-title{margin-top:13px;font-size:clamp(30px,4.4vw,45px);line-height:1.35;font-weight:850;letter-spacing:-1.5px}
    .section-title span{color:var(--heading-emphasis)}
    .section-subtitle{max-width:35em;margin:17px auto 0;font-size:14px;line-height:1.9}
    .topic-links{display:flex;justify-content:center;flex-wrap:wrap;gap:9px;margin-top:21px}
    .topic-links a{display:inline-flex;align-items:center;justify-content:center;gap:7px;min-height:44px;padding:8px 13px;border:1px solid rgba(var(--orange-tint-rgb),0.1040);border-radius:99px;background:rgba(var(--orange-tint-rgb),0.0325);font-size:12px}
    .topic-links svg{width:16px;height:16px;color:var(--orange)}
    .topic-links a:hover{background:rgba(var(--orange-tint-rgb),0.0780);border-color:var(--orange)}
    .faq-search-panel{margin-bottom:18px}
    .search-label{display:block;margin-bottom:9px;font-size:12px;font-weight:700}
    .faq-tools{display:grid;grid-template-columns:minmax(0,1fr) 112px;gap:12px}
    .search-field{display:flex;align-items:center;gap:10px;min-height:54px;padding:0 7px 0 16px;border:1px solid rgba(var(--orange-tint-rgb),0.1495);border-radius:13px;background:var(--surface-warm);transition:border-color .2s,box-shadow .2s;border-color:var(--control-line);box-shadow:none;}
    .search-field:focus-within{border-color:var(--blue);box-shadow:0 0 0 3px rgba(var(--blue-rgb),.15);}
    .search-field>svg{width:20px;height:20px;color:var(--orange)}
    .search-field input{width:100%;min-width:0;min-height:50px;padding:8px 0;border:0;outline:none;background:transparent;font-size:14px;appearance:none}
    .search-field input::-webkit-search-cancel-button{appearance:none}
    .search-field input::placeholder{color:var(--muted)}
    .search-field input:focus-visible{outline:none}
    .clear-search{display:grid;place-items:center;flex:none;width:40px;height:40px;border-radius:9px;background:rgba(var(--orange-tint-rgb),0.0520);visibility:hidden}
    .clear-search.has-query{visibility:visible}
    .clear-search svg{width:16px;height:16px}
    .clear-search:hover{background:rgba(var(--orange-tint-rgb),0.1105)}
    .expand-all{min-height:54px;padding:10px 12px;border:1px solid rgba(var(--orange-tint-rgb),0.1560);border-radius:13px;background:rgba(var(--orange-tint-rgb),0.0488);color:var(--orange-ink);font-size:12px;font-weight:700}
    .expand-all:disabled{opacity:.55;cursor:default}
    .expand-all:hover{background:rgba(var(--orange-tint-rgb),0.0975);border-color:var(--orange)}
    .search-feedback{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:32px;margin-top:7px;color:var(--muted);font-size:10px;line-height:1.7}
    .faq-accordion-group{display:grid;gap:16px}
    .faq-item{position:relative;min-width:0;border:1px solid var(--line);border-radius:20px;background:var(--surface-warm);box-shadow:var(--shadow);transition:all .3s cubic-bezier(.4,0,.2,1)}
    .faq-item:hover{box-shadow:0 14px 34px -22px rgba(var(--blue-rgb),0.1610),0 5px 18px -14px rgba(var(--orange-tint-rgb),0.1300);border-color:rgba(var(--blue-rgb),0.1400)}
    .faq-item[open]{background:var(--surface-warm);box-shadow:var(--shadow);border-color:var(--orange-ink);}
    .faq-question{display:grid;grid-template-columns:46px minmax(0,1fr) 24px;align-items:center;gap:14px;min-height:112px;padding:23px 25px;list-style:none;cursor:pointer;line-height:1.65;font-size:16px;font-weight:750;border-radius:19px;touch-action:manipulation}
    .faq-question::-webkit-details-marker{display:none}
    .faq-question::marker{content:""}
    .faq-question:focus-visible{outline:3px solid var(--blue);outline-offset:-6px}
    .faq-number{align-self:start;padding-top:1px;font-size:20px;font-weight:850;letter-spacing:-.5px;color:var(--orange-ink);}
    .faq-question-text{min-width:0}
    .faq-chevron{width:24px;height:24px;color:var(--orange);transition:transform .3s cubic-bezier(.4,0,.2,1)}
    .faq-item[open] .faq-chevron{transform:rotate(180deg)}
    .faq-item[data-closing="true"] .faq-chevron{transform:rotate(0)}
    .faq-answer{margin:0 25px;padding:0 0 26px;border-top:1px solid rgba(var(--orange-tint-rgb),0.1040);color:var(--ink);font-size:14px;line-height:1.95}
    .answer-lead{margin:19px 0 18px;font-weight:650}
    .answer-steps{display:grid;gap:17px;margin:0;padding:0;counter-reset:step;list-style:none}
    .answer-steps>li{min-width:0;overflow-wrap:anywhere;position:relative;padding-left:35px;counter-increment:step}
    .answer-steps>li::before{content:counter(step,decimal-leading-zero) / "";position:absolute;left:0;top:3px;display:grid;place-items:center;width:25px;height:25px;border:1px solid rgba(var(--orange-tint-rgb),0.1170);border-radius:8px;background:rgba(var(--orange-tint-rgb),0.0455);color:var(--orange-ink);font-size:10px;font-weight:750;line-height:1}
    .answer-steps strong{color:var(--orange-ink);font-weight:750;text-decoration:underline;text-decoration-color:rgba(var(--orange-tint-rgb),0.2600);text-underline-offset:4px}
    .setting-path{padding:2px 0;border-radius:5px;background:rgba(var(--orange-tint-rgb),0.0455);box-decoration-break:clone;-webkit-box-decoration-break:clone;overflow-wrap:anywhere}
    .answer-note{margin-top:20px;padding:13px 15px;border-left:3px solid var(--orange);border-radius:0 10px 10px 0;background:var(--surface-cool);font-size:12px;line-height:1.9;border-color:var(--line);box-shadow:none;}
    .answer-sources{display:flex;flex-wrap:wrap;align-items:center;gap:0 14px;margin-top:17px;padding-top:12px;border-top:1px solid rgba(var(--orange-tint-rgb),0.0780);font-size:11px;color:var(--muted)}
    .answer-sources a{display:inline-flex;align-items:center;min-height:36px;text-decoration:underline;text-decoration-color:currentColor;text-underline-offset:4px;color:var(--blue);}
    .answer-sources a:hover{background:rgba(var(--orange-tint-rgb),0.0650);text-decoration-color:var(--orange)}
    .faq-answer a:not(.answer-sources a){text-decoration:underline;text-decoration-color:currentColor;text-underline-offset:4px;color:var(--blue);}
    .empty-state{min-height:170px;padding:28px;border:1px dashed rgba(var(--orange-tint-rgb),0.1950);border-radius:18px;background:rgba(var(--orange-tint-rgb),0.0260);text-align:center}
    .empty-state strong{display:block;font-size:16px;margin-bottom:8px}
    .empty-state p{font-size:13px;color:var(--muted)}
    .editorial-note{display:flex;flex-wrap:wrap;gap:4px 16px;margin-top:18px;color:var(--muted);font-size:10px;line-height:1.8}
    .support-panel{display:flex;align-items:center;justify-content:space-between;gap:20px;margin-top:33px;padding:23px 25px;border:1px solid rgba(var(--orange-tint-rgb),0.1170);border-radius:18px;background:var(--surface-cool);border-color:var(--line);box-shadow:none;}
    .support-copy strong{display:block;font-size:17px;margin-bottom:5px}
    .support-copy p{font-size:12px;line-height:1.85;color:var(--muted)}
    .support-link{display:inline-flex;align-items:center;justify-content:center;gap:8px;flex:none;min-height:46px;padding:10px 16px;border-radius:11px;background:var(--orange);color:var(--ink);font-size:12px;font-weight:750;box-shadow:0 6px 18px rgba(var(--orange-tint-rgb),0.0845)}
    .support-link svg{width:16px;height:16px}
    .support-link:hover{background:var(--orange-hover)}
    .site-footer{position:relative;padding:44px 0 23px;border-top:1px solid var(--line);background:#EDF2F7;}
    .site-footer::before{content:"";position:absolute;inset:0 0 auto;height:3px;background:var(--orange);}
    .footer-top{display:grid;grid-template-columns:1fr 1.15fr;gap:60px;padding-bottom:28px}
    .footer-brand p{margin-top:11px;color:var(--muted);font-size:12px;line-height:1.9}
    .footer-links-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:22px}
    .footer-links-grid h3{margin-bottom:9px;font-size:13px;color:var(--orange-ink)}
    .footer-links-grid a{display:flex;align-items:center;min-height:40px;font-size:12px;color:var(--muted)}
    
    .footer-bottom{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px 22px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:10px;align-items:center;}
    
    @media(max-width:1000px){.main-navigation{gap:22px}.footer-top{gap:35px}}
    @media(max-width:760px){.container{width:calc(100% - 40px)}.container-narrow{width:calc(100% - 40px)}.brand-logo{font-size:20px}.brand-logo svg{width:36px;height:36px}.menu-toggle{display:grid}.main-navigation{display:none;position:absolute;top:70px;left:0;right:0;flex-direction:column;align-items:stretch;height:auto;padding:16px 20px 22px;gap:4px;background:var(--surface-warm);border-bottom:1px solid var(--line);box-shadow:0 16px 30px rgba(var(--orange-tint-rgb),0.0585)}.main-navigation.is-open{display:flex}.main-navigation a{min-height:46px;padding:8px 14px}.main-navigation [aria-current="page"]::after{left:auto;right:14px;bottom:20px}.faq-section{padding:22px 0 48px}.intro{margin:25px auto 28px}.section-title{font-size:34px}.section-subtitle{font-size:13px}.faq-question{grid-template-columns:42px minmax(0,1fr) 21px;gap:10px;padding:22px 19px;font-size:15px;line-height:1.8;min-height:140px}.faq-number{font-size:19px}.faq-chevron{width:21px;height:21px}.faq-answer{margin-inline:19px;font-size:13px;line-height:1.95;padding-bottom:23px}.answer-steps{gap:16px}.answer-steps>li{padding-left:32px}.answer-sources{gap:0 12px}.support-panel{align-items:start;flex-direction:column;padding:23px;gap:16px}.support-link{align-self:start}.footer-top{grid-template-columns:1fr;gap:28px}.footer-links-grid{gap:18px}}
    @media(max-width:380px){.container,.container-narrow{width:calc(100% - 32px)}.section-title{font-size:30px}.eyebrow{font-size:10px;letter-spacing:1.5px}.topic-links{gap:6px}.topic-links a{padding-inline:10px;font-size:11px}.faq-tools{grid-template-columns:minmax(0,1fr) 86px;gap:8px}.expand-all{padding-inline:8px;font-size:11px}.search-field{gap:7px;padding-left:11px}.search-field>svg{width:17px;height:17px}.search-field input{font-size:13px}.clear-search{width:30px;height:38px}.search-feedback{align-items:start;flex-direction:column;gap:2px;min-height:46px}.faq-question{grid-template-columns:38px minmax(0,1fr) 18px;gap:8px;padding:20px 16px;min-height:164px;font-size:14px;line-height:1.85}.faq-number{font-size:17px}.faq-chevron{width:18px;height:18px}.faq-answer{margin-inline:16px}.answer-note{padding:12px}.footer-links-grid{gap:12px}.footer-links-grid a,.footer-links-grid h3{font-size:11px}}
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{transition:none!important;animation:none!important}}
  
    a:focus-visible,button:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid var(--blue);outline-offset:4px}
    .main-navigation [aria-current="page"]{color:var(--ink);font-weight:800}