:root{--brand:#0ea5e9;--brand-dark:#0369a1;--brand-soft:#e0f2fe;--text:#1f2937;--text-sub:#4b5563;--line:#e5e7eb;--bg:#fff;--bg-soft:#f8fafc;--radius:12px}*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}img{max-width:100%;height:auto;display:block}a{color:var(--brand-dark);text-decoration:none}a:hover{color:var(--brand);text-decoration:underline}h1,h2,h3,h4{line-height:1.35;color:#111827;margin:0 0 .6em}p{margin:0 0 1em}ul,ol{margin:0 0 1em;padding-left:1.4em}table{border-collapse:collapse;width:100%}.wrap{max-width:1200px;margin:0 auto;padding:0 20px}.shell{max-width:1200px;margin:0 auto;padding:0 20px}.skip-link{position:absolute;left:-9999px;top:0;background:#fff;padding:8px 14px;z-index:10000}.skip-link:focus{left:12px;top:12px}:focus-visible{outline:2px solid var(--brand);outline-offset:2px}.site-header{position:sticky;top:0;z-index:900;background:#fff;border-bottom:1px solid var(--line)}.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:64px}.brand{display:flex;align-items:center;gap:10px;font-weight:700;color:#111827;font-size:18px}.brand-logo{border-radius:8px}.site-nav{display:flex}.nav-list{display:flex;align-items:center;gap:4px;list-style:none;margin:0;padding:0}.nav-item{position:relative}.nav-item>a{display:block;padding:8px 14px;border-radius:8px;color:var(--text);font-weight:500}.nav-item>a:hover{background:var(--brand-soft);color:var(--brand-dark);text-decoration:none}.nav-parent{display:flex;align-items:center}.nav-sub-toggle{display:none}.nav-sub{display:none;position:absolute;top:100%;left:8px;min-width:132px;flex-direction:column;gap:2px;list-style:none;margin:0;padding:6px;background:#fff;border:1px solid var(--line);border-radius:10px;box-shadow:0 8px 20px rgba(15,23,42,.10);z-index:920}.nav-item.has-children:hover>.nav-sub,.nav-item.has-children.is-open>.nav-sub{display:flex}.nav-sub a{display:block;padding:8px 12px;font-size:13px;color:var(--text-sub);border-radius:6px;white-space:nowrap}.nav-sub a:hover{background:var(--brand-soft);color:var(--brand-dark)}.nav-toggle{display:none}.hero{background:linear-gradient(135deg,#f0f9ff 0%,#fff 70%);border-bottom:1px solid var(--line);padding:56px 0 44px}.hero-title{font-size:32px;margin-bottom:14px}.hero-subtitle{max-width:760px;color:var(--text-sub);font-size:17px}.hero-points{list-style:none;padding:0;margin:0 0 22px;color:var(--text-sub)}.hero-points li{padding-left:22px;position:relative}.hero-points li::before{content:"";position:absolute;left:4px;top:12px;width:7px;height:7px;border-radius:3px;background:var(--brand)}.hero-actions{display:flex;gap:12px;flex-wrap:wrap}.btn{display:inline-block;padding:11px 22px;border-radius:var(--radius);font-weight:600}.btn-primary{background:var(--brand);color:#fff}.btn-primary:hover{background:var(--brand-dark);color:#fff;text-decoration:none}.btn-ghost{border:1px solid var(--line);color:var(--text)}.btn-ghost:hover{background:var(--bg-soft);text-decoration:none}.section{padding:44px 0;border-bottom:1px solid var(--line)}.section:last-of-type{border-bottom:0}.section-title{font-size:23px;margin-bottom:8px;padding-left:12px;border-left:4px solid var(--brand);border-radius:2px}.section-desc{color:var(--text-sub);margin-bottom:22px}.site-footer{background:var(--bg-soft);border-top:1px solid var(--line);padding:36px 0 18px;margin-top:20px}.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:24px}.footer-brand{font-weight:700;margin-bottom:8px}.footer-desc{font-size:14px;color:var(--text-sub)}.footer-title{font-size:14px;color:var(--text-sub);margin-bottom:8px}.footer-links{list-style:none;padding:0;font-size:14px}.footer-links a{color:var(--text-sub)}.footer-trust{font-size:14px;color:var(--text-sub);margin:0 0 6px}.footer-copy{font-size:13px;color:var(--text-sub);margin:0}.footer-filing{font-size:13px;color:var(--text-sub);margin:6px 0 0}.footer-filing a{color:var(--text-sub);margin-right:12px}.footer-bar{border-top:1px solid var(--line);margin-top:22px;padding-top:14px}