:root{--bg:#f3f6f8;--paper:#fff;--paper-2:#eef3f7;--ink:#16232f;--muted:#607082;--line:#d7dfe8;--navy:#18324d;--navy-2:#295d86;--accent:#ffb44c;--accent-2:#ffe0b6;--shell:min(1180px,calc(100% - 40px))}
*{box-sizing:border-box;min-width:0}
html{scroll-behavior:smooth}body{margin:0;font-family:Arial,"Microsoft YaHei","PingFang SC",sans-serif;background:linear-gradient(180deg,#fafcff 0,#edf2f8 100%);color:var(--ink);line-height:1.8}a{color:inherit;text-decoration:none}img{display:block;max-width:100%;height:auto}figure{margin:0}
.site-header{position:sticky;top:0;z-index:60;background:rgba(24,50,77,.96);color:#fff;border-bottom:1px solid rgba(255,255,255,.08);backdrop-filter:blur(16px)}.header-shell{width:var(--shell);min-height:72px;margin:0 auto;display:grid;grid-template-columns:1fr auto auto;gap:24px;align-items:center}.brand{font-weight:900;letter-spacing:.04em}.site-nav{display:flex;gap:20px;flex-wrap:wrap;justify-content:center;font-size:13px;color:#d3e3f3}.header-cta{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 16px;border-radius:999px;background:var(--accent);color:#2a200f;font-weight:900}
.hero-section{padding:74px 0 38px;background:linear-gradient(135deg,#18324d,#2b5d86);color:#fff;overflow:hidden}.hero-shell{width:var(--shell);margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.95fr);gap:52px;align-items:center}.hero-copy h1{margin:10px 0 16px;font-size:clamp(38px,5vw,70px);line-height:1.02;letter-spacing:-.05em}.eyebrow,.section-head span,.footer-nav a{font-size:10px;letter-spacing:.18em;font-weight:900;text-transform:uppercase;color:var(--accent-2)}.lead{margin:0;color:#e8f2fb;font-size:17px;line-height:1.85}.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:26px}.primary-button,.text-link{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 18px;border-radius:14px;font-weight:900}.primary-button{background:var(--accent);color:#2a200f}.text-link{border:1px solid rgba(255,255,255,.22);color:#fff}.hero-visuals{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:stretch}.hero-visuals img{border-radius:20px;box-shadow:0 22px 50px rgba(0,0,0,.2)}.hero-visuals img:first-child{grid-column:1/-1;height:220px;object-fit:cover}.hero-visuals img:last-child{height:260px;object-fit:cover}
.section{padding:86px 0}.section.alt{background:#fff}.content-shell{width:var(--shell);margin:0 auto}.section-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,.9fr);gap:24px;align-items:end;margin-bottom:28px}.section-head h2{margin:8px 0 0;font-size:clamp(30px,3.4vw,48px);line-height:1.1;letter-spacing:-.04em}.section-head p{margin:0;color:var(--muted)}.two-col{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:36px;align-items:center}.two-col figure{padding:16px;background:#f3f7fb;border:1px solid var(--line);border-radius:24px}.two-col figure img{width:100%;max-height:360px;object-fit:contain}.grid-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}.grid-cards article,.check-list div,.faq-list details{background:var(--paper);border:1px solid var(--line);border-radius:22px;box-shadow:0 18px 46px rgba(19,34,54,.08)}.grid-cards article{padding:24px}.grid-cards h3{margin:0 0 10px;font-size:22px}.grid-cards p{margin:0;color:var(--muted);line-height:1.85}.download-strip{margin-top:16px}.download-strip a{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 18px;border-radius:14px;background:var(--navy);color:#fff;font-size:10px;letter-spacing:.18em;font-weight:900;text-transform:uppercase}
.check-list{display:grid;grid-template-columns:repeat(4,1fr);gap:12px}.check-list div{padding:22px;min-height:150px}.check-list b{display:block;font-size:28px;color:var(--navy)}.check-list p{margin:10px 0 0;color:var(--muted)}.faq-list{display:grid;gap:12px}.faq-list details{padding:0 20px}.faq-list summary{list-style:none;cursor:pointer;padding:18px 0;font-weight:900;font-size:18px}.faq-list summary::-webkit-details-marker{display:none}.faq-list p{margin:0 0 18px;color:var(--muted)}.site-footer{background:var(--navy);color:#d3e3f3;padding:34px 0 40px}.footer-shell{width:var(--shell);margin:0 auto;display:grid;grid-template-columns:1fr auto;gap:18px;align-items:center}.footer-shell h3{margin:0 0 8px;color:#fff}.footer-nav{display:flex;gap:18px;flex-wrap:wrap;justify-content:flex-end}.mobile-download-bar{display:none}
@media (max-width:980px){.header-shell,.hero-shell,.section-head,.two-col,.footer-shell{grid-template-columns:1fr}.site-nav{display:none}.hero-visuals,.grid-cards,.check-list{grid-template-columns:1fr 1fr}.hero-visuals img:first-child{height:200px}.hero-visuals img:last-child{height:220px}}
@media (max-width:640px){:root{--shell:min(100% - 28px,1180px)}.hero-section{padding:56px 0 28px}.hero-copy h1{font-size:clamp(34px,12vw,48px)}.lead{font-size:15px}.hero-actions{flex-direction:column}.primary-button,.text-link,.download-strip a{width:100%}.hero-visuals,.grid-cards,.check-list{grid-template-columns:1fr}.hero-visuals img:first-child{grid-column:auto;height:180px}.hero-visuals img:last-child{height:200px}.section{padding:68px 0}.two-col{gap:20px}.two-col figure{padding:12px}.mobile-download-bar{position:fixed;left:0;right:0;bottom:0;z-index:80;display:flex;align-items:center;justify-content:space-between;padding:9px 12px calc(9px + env(safe-area-inset-bottom));background:rgba(24,50,77,.98);color:#fff}.mobile-download-bar small{display:block;font-size:9px;letter-spacing:.16em;color:#a8c3db}.mobile-download-bar strong{display:block;font-size:13px}.mobile-download-bar a{display:inline-flex;align-items:center;justify-content:center;min-height:42px;padding:0 16px;border-radius:999px;background:var(--accent);color:#2a200f;font-weight:900}}