*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
html,body{background:#fbfbfd;color:#1d1d1f;font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased}
html.dark-pre body{background:#000;color:#f5f5f7}
body.dark{background:#000;color:#f5f5f7}
[id]{scroll-margin-top:80px}
a{color:inherit;text-decoration:none}
.wrap{max-width:1140px;margin:0 auto;padding:0 20px}

/* -------- Top bar (shared) -------- */
.topbar{position:sticky;top:0;z-index:50;background:rgba(251,251,253,.82);backdrop-filter:saturate(180%) blur(20px);border-bottom:1px solid rgba(0,0,0,.06)}
body.dark .topbar{background:rgba(0,0,0,.7);border-bottom-color:rgba(255,255,255,.08)}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;padding-top:14px;padding-bottom:14px;gap:14px}
.topbar .brand{font-weight:700;letter-spacing:-.02em;font-size:18px;display:inline-flex;align-items:center;gap:8px;text-decoration:none;color:inherit}.topbar .brand img{display:block;flex-shrink:0;width:22px;height:22px}
.topbar .nav{display:flex;gap:6px;margin-left:24px}
.topbar .nav a{padding:8px 12px;border-radius:8px;font-size:14px;color:#515154;font-weight:500;transition:all .2s}
.topbar .nav a:hover,.topbar .nav a.active{background:rgba(0,0,0,.05);color:#1d1d1f}
.topbar .nav a.active{color:#0071e3;font-weight:600}
body.dark .topbar .nav a{color:#a1a1a6}
body.dark .topbar .nav a:hover,body.dark .topbar .nav a.active{background:rgba(255,255,255,.08);color:#f5f5f7}
body.dark .topbar .nav a.active{color:#64d2ff}
.topbar .right{display:flex;gap:10px;align-items:center;margin-left:auto}
.btn{display:inline-flex;align-items:center;gap:6px;padding:9px 16px;border-radius:999px;font-size:14px;font-weight:500;border:0;cursor:pointer;transition:all .2s;text-decoration:none;font-family:inherit}
.btn-primary{background:#1d1d1f;color:#fff}
.btn-primary:hover{background:#0071e3}
body.dark .btn-primary{background:#fff;color:#000}
body.dark .btn-primary:hover{background:#0071e3;color:#fff}
@media(max-width:900px){.topbar .nav{display:none}}
@media(max-width:560px){.wrap{padding:0 16px}}

.theme-toggle{width:40px;height:40px;border-radius:50%;border:1px solid rgba(0,0,0,.08);background:rgba(0,0,0,.04);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;color:inherit;transition:all .25s cubic-bezier(.22,.61,.36,1);position:relative;flex-shrink:0}
.theme-toggle:hover{background:rgba(0,0,0,.08);transform:rotate(15deg)}
body.dark .theme-toggle{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.1)}
body.dark .theme-toggle:hover{background:rgba(255,255,255,.14)}
.theme-toggle svg{width:18px;height:18px;transition:transform .4s cubic-bezier(.22,.61,.36,1), opacity .2s}
.theme-toggle .icon-moon{position:absolute}
.theme-toggle .icon-sun{opacity:0;transform:rotate(-90deg) scale(.5)}
body.dark .theme-toggle .icon-moon{opacity:0;transform:rotate(90deg) scale(.5)}
body.dark .theme-toggle .icon-sun{opacity:1;transform:none}

/* -------- Hero (FAQ accent: amber) -------- */
.hero{padding:80px 0 40px;text-align:center;position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;top:-180px;left:50%;transform:translateX(-50%);width:900px;height:600px;background:radial-gradient(ellipse at center,rgba(255,159,10,.10) 0%,transparent 70%);pointer-events:none;z-index:-1}
body.dark .hero::before{background:radial-gradient(ellipse at center,rgba(255,159,10,.18) 0%,transparent 70%)}
.hero .eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:#ff9f0a;font-weight:600;margin-bottom:18px;padding:6px 14px;border-radius:999px;background:rgba(255,159,10,.1);border:1px solid rgba(255,159,10,.2)}
.hero h1{font-size:clamp(36px,6vw,68px);font-weight:700;letter-spacing:-.035em;line-height:1.05;margin-bottom:14px;background:linear-gradient(180deg,#1d1d1f 0%,#515154 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
body.dark .hero h1{background:linear-gradient(180deg,#f5f5f7 0%,#a1a1a6 100%);-webkit-background-clip:text;background-clip:text}
.hero .lead{font-size:clamp(15px,1.8vw,18px);color:#6e6e73;max-width:600px;margin:0 auto 32px;line-height:1.55}
body.dark .hero .lead{color:#a1a1a6}

/* Search input */
.faq-search{max-width:560px;margin:0 auto;position:relative}
.faq-search input{width:100%;padding:18px 22px 18px 56px;border-radius:999px;border:1.5px solid rgba(0,0,0,.06);background:#fff;font-size:16px;font-family:inherit;color:inherit;outline:0;transition:all .25s;box-shadow:0 14px 36px -16px rgba(0,0,0,.14)}
.faq-search input:focus{border-color:#ff9f0a;box-shadow:0 0 0 5px rgba(255,159,10,.15)}
body.dark .faq-search input{background:#1c1c1e;border-color:rgba(255,255,255,.1)}
.faq-search::before{content:"";position:absolute;left:22px;top:50%;transform:translateY(-50%);width:20px;height:20px;background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23515154' stroke-width='2' stroke-linecap='round'><circle cx='11' cy='11' r='8'/><path d='M21 21l-4.35-4.35'/></svg>") no-repeat center/contain;pointer-events:none;opacity:.6}
body.dark .faq-search::before{background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23a1a1a6' stroke-width='2' stroke-linecap='round'><circle cx='11' cy='11' r='8'/><path d='M21 21l-4.35-4.35'/></svg>") no-repeat center/contain}

/* -------- Section -------- */
.section{padding:32px 0}
.section h2{font-size:clamp(22px,2.4vw,30px);font-weight:700;letter-spacing:-.02em;margin-bottom:24px}

/* -------- FAQ list -------- */
.faq-wrap{max-width:820px;margin:0 auto}
.faq-list{display:flex;flex-direction:column;gap:10px}
.faq-item{background:#fff;border:1px solid rgba(0,0,0,.05);border-radius:18px;overflow:hidden;transition:all .25s}
body.dark .faq-item{background:#1c1c1e;border-color:rgba(255,255,255,.06)}
.faq-item[open]{border-color:rgba(255,159,10,.3);box-shadow:0 8px 24px -12px rgba(255,159,10,.2)}
.faq-item summary{padding:22px 26px;cursor:pointer;font-size:16px;font-weight:600;letter-spacing:-.01em;display:flex;align-items:center;justify-content:space-between;gap:14px;list-style:none;user-select:none;transition:color .2s}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary:hover{color:#ff9f0a}
.faq-item summary::after{content:"";width:30px;height:30px;border-radius:50%;background-color:rgba(0,0,0,.05);background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'><path d='M6 1.2v9.6M1.2 6h9.6' stroke='%23515154' stroke-width='1.6' stroke-linecap='round'/></svg>");background-size:12px 12px;background-position:center;background-repeat:no-repeat;flex-shrink:0;transition:transform .25s cubic-bezier(.22,.61,.36,1), background-color .2s}
body.dark .faq-item summary::after{background-color:rgba(255,255,255,.1);background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'><path d='M6 1.2v9.6M1.2 6h9.6' stroke='%23a1a1a6' stroke-width='1.6' stroke-linecap='round'/></svg>")}
.faq-item[open] summary::after{transform:rotate(45deg);background-color:#ff9f0a;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12'><path d='M6 1.2v9.6M1.2 6h9.6' stroke='%23ffffff' stroke-width='1.8' stroke-linecap='round'/></svg>")}
.faq-item .faq-body{padding:0 26px 24px;color:#515154;font-size:15px;line-height:1.65}
body.dark .faq-item .faq-body{color:#a1a1a6}
.faq-item .q-num{font-family:"SF Mono",Menlo,monospace;font-size:13px;color:#86868b;font-weight:500;margin-right:8px}

.faq-item.hidden{display:none}

/* No results */
.no-results{text-align:center;padding:60px 20px;color:#86868b;display:none}
.no-results.visible{display:block}
.no-results .ico{font-size:48px;margin-bottom:12px;opacity:.4}
.no-results h3{font-size:18px;font-weight:600;color:#1d1d1f;margin-bottom:6px}
body.dark .no-results h3{color:#f5f5f7}

/* -------- CTA "still have questions" -------- */
.help-cta{margin:60px 0 20px;padding:48px;border-radius:24px;background:linear-gradient(135deg,#1d1d1f,#3a3a3c);color:#fff;display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;position:relative;overflow:hidden}
.help-cta::before{content:"";position:absolute;inset:-50%;background:radial-gradient(circle at 80% 50%,rgba(255,159,10,.3) 0%,transparent 50%);pointer-events:none}
body.dark .help-cta{background:linear-gradient(135deg,#0071e3,#003d7a)}
body.dark .help-cta::before{background:radial-gradient(circle at 80% 50%,rgba(255,255,255,.18) 0%,transparent 50%)}
.help-cta > *{position:relative}
.help-cta h3{font-size:clamp(22px,2.4vw,28px);font-weight:700;margin-bottom:6px;letter-spacing:-.02em;color:#fff}
.help-cta p{color:rgba(255,255,255,.75);font-size:15px;line-height:1.5;max-width:540px}
.help-cta .btn-cta{background:#fff;color:#000;padding:14px 26px;font-size:14px;font-weight:600;border-radius:999px;display:inline-flex;align-items:center;gap:6px;text-decoration:none;transition:all .25s;flex-shrink:0}
.help-cta .btn-cta:hover{background:#ff9f0a;color:#fff;transform:translateY(-2px);box-shadow:0 14px 32px -10px rgba(255,159,10,.5)}
@media(max-width:720px){
    .help-cta{padding:32px 24px;grid-template-columns:1fr;text-align:center}
}

/* Scroll-top */
.scroll-top{position:fixed;right:24px;bottom:24px;width:48px;height:48px;border-radius:50%;background:#fff;color:#1d1d1f;border:1px solid rgba(0,0,0,.08);cursor:pointer;display:none;align-items:center;justify-content:center;box-shadow:0 10px 24px -8px rgba(0,0,0,.18);z-index:89;transition:all .25s cubic-bezier(.22,.61,.36,1);opacity:0;transform:translateY(8px)}
.scroll-top.visible{display:flex;opacity:1;transform:none}
.scroll-top:hover{background:#ff9f0a;color:#fff;border-color:#ff9f0a;transform:translateY(-2px);box-shadow:0 14px 28px -8px rgba(255,159,10,.4)}
.scroll-top svg{width:18px;height:18px}
body.dark .scroll-top{background:#1c1c1e;color:#f5f5f7;border-color:rgba(255,255,255,.1)}
body.dark .scroll-top:hover{background:#ff9f0a;border-color:#ff9f0a}
@media(max-width:640px){.scroll-top{right:16px;bottom:16px}}

/* Footer */
footer.foot{padding:60px 0 40px;border-top:1px solid rgba(0,0,0,.06);margin-top:60px}
body.dark footer.foot{border-top-color:rgba(255,255,255,.08)}
.foot-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:36px;margin-bottom:40px}
.foot-col h5{font-size:13px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:#86868b;margin-bottom:14px}
.foot-col a{display:block;padding:5px 0;font-size:14px;color:#515154;transition:color .2s}
body.dark .foot-col a{color:#a1a1a6}
.foot-col a:hover{color:#ff9f0a}
.foot-col .desc{font-size:14px;color:#6e6e73;line-height:1.5}
body.dark .foot-col .desc{color:#a1a1a6}
.foot-bottom{padding-top:24px;border-top:1px solid rgba(0,0,0,.06);font-size:13px;color:#86868b;display:flex;justify-content:space-between;flex-wrap:wrap;gap:14px}
body.dark .foot-bottom{border-top-color:rgba(255,255,255,.08)}
@media(max-width:760px){.foot-grid{grid-template-columns:1fr 1fr;gap:24px}}
@media(max-width:480px){.foot-grid{grid-template-columns:1fr}}