:root{
    --spf-bg:#f6f7fa;--spf-surface:#fff;--spf-surface-soft:#f0f2f6;
    --spf-text:#101318;--spf-muted:#636a76;--spf-border:#d9dde5;
    --spf-strong:#101318;--spf-on-strong:#fff;--spf-shadow:0 20px 60px rgba(16,19,24,.08);
}
html[data-public-theme="dark"]{
    --spf-bg:#090d17;--spf-surface:#101722;--spf-surface-soft:#151e2b;
    --spf-text:#f7f8fb;--spf-muted:#aab3c2;--spf-border:#2b3544;
    --spf-strong:#fff;--spf-on-strong:#101318;--spf-shadow:0 20px 60px rgba(0,0,0,.28);
}
@media(prefers-color-scheme:dark){
    html[data-public-theme="system"]{
        --spf-bg:#090d17;--spf-surface:#101722;--spf-surface-soft:#151e2b;
        --spf-text:#f7f8fb;--spf-muted:#aab3c2;--spf-border:#2b3544;
        --spf-strong:#fff;--spf-on-strong:#101318;--spf-shadow:0 20px 60px rgba(0,0,0,.28);
    }
}
*{box-sizing:border-box}
html{background:var(--spf-bg);color:var(--spf-text);scroll-behavior:smooth}
body{margin:0;min-width:0;background:var(--spf-bg);color:var(--spf-text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
a{color:inherit} button,a{-webkit-tap-highlight-color:transparent}
.spf-shell{width:min(1120px,calc(100% - 36px));margin:0 auto}
.spf-site-header{position:sticky;top:0;z-index:30;border-bottom:1px solid var(--spf-border);background:color-mix(in srgb,var(--spf-bg) 88%,transparent);backdrop-filter:blur(16px)}
.spf-nav{min-height:72px;display:flex;align-items:center;gap:24px}
.spf-brand{display:inline-flex;align-items:center;gap:10px;text-decoration:none;font-size:1.05rem;font-weight:850}
.spf-brand-mark{display:grid;place-items:center;width:36px;height:36px;border-radius:11px;background:var(--spf-strong);color:var(--spf-on-strong);font-weight:900}
.spf-links{display:flex;align-items:center;gap:20px;margin-left:auto}
.spf-links a,.spf-footer a{text-decoration:none;color:var(--spf-muted);font-weight:700}
.spf-links a[aria-current="page"]{color:var(--spf-text)}
.spf-nav-actions{display:flex;align-items:center;gap:9px}
.spf-theme-button,.spf-entry,.spf-help-card>a,.spf-final-card>a{
    min-height:40px;border:1px solid var(--spf-border);border-radius:11px;padding:0 13px;
    display:inline-flex;align-items:center;justify-content:center;gap:7px;background:var(--spf-surface);
    color:var(--spf-text);font:inherit;font-weight:800;text-decoration:none;cursor:pointer
}
.spf-entry,.spf-help-card>a,.spf-final-card>a{border-color:var(--spf-strong);background:var(--spf-strong);color:var(--spf-on-strong)}
.spf-hero{padding:84px 0 54px}.spf-hero-inner{max-width:820px;text-align:center}
.spf-eyebrow{display:inline-block;color:var(--spf-muted);font-size:.78rem;font-weight:900;letter-spacing:.09em;text-transform:uppercase}
.spf-hero h1{margin:12px 0 0;font-size:clamp(2.25rem,6vw,4.6rem);line-height:1.02;letter-spacing:-.045em}
.spf-hero p{max-width:720px;margin:20px auto 0;color:var(--spf-muted);font-size:clamp(1rem,1.8vw,1.18rem);line-height:1.7}
.spf-faq-section{padding:10px 0 76px}
.spf-faq-layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,340px);gap:22px;align-items:start}
.spf-faq-list{display:grid;gap:12px;min-width:0}
.spf-faq-item{border:1px solid var(--spf-border);border-radius:17px;background:var(--spf-surface);overflow:hidden;box-shadow:0 10px 35px rgba(16,19,24,.03)}
.spf-question{width:100%;min-height:66px;padding:17px 19px;display:flex;align-items:center;justify-content:space-between;gap:16px;border:0;background:transparent;color:var(--spf-text);text-align:left;font:inherit;font-size:1rem;font-weight:850;cursor:pointer}
.spf-plus{display:grid;place-items:center;width:30px;height:30px;flex:0 0 auto;border:1px solid var(--spf-border);border-radius:9px;background:var(--spf-surface-soft);transition:transform .18s ease}
.spf-question[aria-expanded="true"] .spf-plus{transform:rotate(45deg)}
.spf-answer{padding:0 19px 19px}.spf-answer p{margin:0;color:var(--spf-muted);white-space:pre-line;line-height:1.7}
.spf-help-card{position:sticky;top:94px;border:1px solid var(--spf-border);border-radius:20px;padding:24px;background:var(--spf-surface);box-shadow:var(--spf-shadow)}
.spf-help-card h2{margin:9px 0 0;font-size:1.45rem;line-height:1.18}.spf-help-card p{margin:12px 0 18px;color:var(--spf-muted);line-height:1.65}
.spf-empty{border:1px dashed var(--spf-border);border-radius:17px;padding:24px;color:var(--spf-muted);text-align:center;background:var(--spf-surface)}
.spf-final{padding:0 0 74px}
.spf-final-card{display:flex;align-items:center;justify-content:space-between;gap:26px;border:1px solid var(--spf-border);border-radius:24px;padding:30px;background:var(--spf-surface);box-shadow:var(--spf-shadow)}
.spf-final-card h2{margin:8px 0 0;max-width:650px;font-size:clamp(1.55rem,3vw,2.35rem);line-height:1.1}
.spf-final-card p{margin:12px 0 0;max-width:680px;color:var(--spf-muted);line-height:1.65}
.spf-footer{border-top:1px solid var(--spf-border);padding:24px 0 34px}
.spf-footer-inner{display:flex;justify-content:space-between;align-items:center;gap:18px;color:var(--spf-muted);font-size:.9rem}
.spf-footer nav{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:16px}
@media(max-width:820px){
    .spf-links{display:none}.spf-nav-actions{margin-left:auto}.spf-faq-layout{grid-template-columns:1fr}
    .spf-help-card{position:static}.spf-final-card{align-items:flex-start;flex-direction:column}
}
@media(max-width:560px){
    .spf-shell{width:min(100% - 28px,1120px)}.spf-nav{min-height:64px;gap:10px}.spf-brand-mark{width:34px;height:34px}
    .spf-theme-label{display:none}.spf-theme-button{width:40px;padding:0}.spf-entry{min-height:38px;padding:0 11px;font-size:.9rem}
    .spf-hero{padding:58px 0 40px}.spf-hero h1{font-size:clamp(2.05rem,12vw,3.15rem)}
    .spf-faq-section{padding-bottom:54px}.spf-question{min-height:60px;padding:15px}.spf-answer{padding:0 15px 16px}
    .spf-help-card{padding:20px}.spf-final{padding-bottom:54px}.spf-final-card{padding:22px}
    .spf-footer-inner{align-items:flex-start;flex-direction:column}.spf-footer nav{justify-content:flex-start}
}