:root{--ink:#14263c;--muted:#596b80;--blue:#2467d6;--line:#dce5ef;--paper:#f7f9fc;--soft:#eaf2ff;font-family:"Microsoft YaHei","PingFang SC",system-ui,sans-serif;color:var(--ink);background:#fff;font-synthesis:none;line-height:1.75}
*{box-sizing:border-box}body{margin:0}a{color:var(--blue);text-underline-offset:5px}img{max-width:100%;display:block}a:focus-visible{outline:3px solid #5ca5f3;outline-offset:5px;border-radius:3px}.wrap{width:min(1120px,calc(100% - 64px));margin:auto}.skip{position:absolute;top:-100px;background:#fff;padding:8px;z-index:10}.skip:focus{top:8px}.site-header{border-bottom:1px solid var(--line);background:white}.header-inner{min-height:88px;display:flex;align-items:center;justify-content:space-between;gap:24px}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);text-decoration:none;font-size:22px;font-weight:700;letter-spacing:1px}.brand img{width:44px;height:44px;object-fit:contain}.brand small{font-size:13px;color:var(--muted);font-weight:400;letter-spacing:2px;margin-left:5px}.nav{display:flex;gap:27px;font-size:14px}.nav a{color:var(--muted);text-decoration:none;padding:7px 0}.nav a[aria-current=page]{color:var(--blue);border-bottom:2px solid var(--blue)}.hero{display:grid;grid-template-columns:1.2fr 1fr;gap:72px;align-items:center;padding:76px 0 64px}.eyebrow{font-size:12px;letter-spacing:2px;text-transform:uppercase;color:var(--blue);font-weight:600;display:flex;align-items:center;gap:10px}.eyebrow:before{content:"";width:24px;height:1px;background:var(--blue)}h1{font-weight:650;letter-spacing:-1.7px;font-size:54px;line-height:1.25;margin:23px 0}h1 em{color:var(--blue);font-style:normal}.lead{font-size:16px;color:var(--muted);max-width:520px;line-height:1.95}.actions{display:flex;gap:20px;align-items:center;flex-wrap:wrap;margin:30px 0 20px}.button{display:inline-flex;align-items:center;justify-content:center;gap:28px;background:var(--blue);color:#fff;padding:12px 21px;border-radius:6px;text-decoration:none;font-size:14px}.text-link{font-size:14px;text-decoration:none}.fine{font-size:12px;color:var(--muted)}.book-visual{position:relative;min-height:395px;display:grid;place-items:center;background:linear-gradient(145deg,#f5f9ff,#eaf1fc);border:1px solid #e1eafa;border-radius:8px}.book{width:240px;background:#fff;border:1px solid #dbe6f5;border-left:8px solid #2b70d4;border-radius:3px 10px 10px 3px;box-shadow:12px 17px 30px #26548515;transform:rotate(-5deg);padding:28px 28px 23px;position:relative}.book:after{content:"";position:absolute;left:13px;right:-7px;bottom:-8px;height:7px;border:1px solid #dde5ef;background:repeating-linear-gradient(#fff 0 2px,#dce6f1 2px 3px);border-radius:0 0 6px 3px;z-index:-1}.book-top{font-size:10px;letter-spacing:3px;color:#7186a2}.book img{width:165px;height:165px;object-fit:contain;margin:10px auto}.book-title{font-size:30px;font-weight:650;letter-spacing:10px}.book-line{font-size:11px;color:#6d80a1;margin-top:9px;letter-spacing:2px}.visual-caption{position:absolute;right:19px;bottom:15px;color:#637c9d;font-size:11px;letter-spacing:1px}.intro-strip{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:23px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);font-size:13px;color:var(--muted)}.intro-strip strong{color:var(--ink);font-weight:600}.section{padding:64px 0}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;margin-bottom:32px}.section-heading h2{font-size:28px;letter-spacing:-.6px;line-height:1.4;margin:9px 0 0}.section-heading p{color:var(--muted);font-size:14px;max-width:385px;margin:0}.workflow{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}.step{border-top:2px solid #c8daf3;padding-top:18px}.step span{font-size:12px;color:var(--blue);letter-spacing:1px}.step h3{font-size:18px;margin:13px 0 9px;font-weight:600}.step p{font-size:13px;color:var(--muted);margin:0;line-height:1.9}.cloud-section{background:var(--paper);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}.cloud-layout{display:grid;grid-template-columns:1fr 1.2fr;gap:65px}.cloud-layout h2{font-size:28px;line-height:1.5;margin:12px 0 18px}.cloud-layout p{font-size:14px;color:var(--muted)}.data-path{display:flex;align-items:center;justify-content:space-between;gap:13px;padding:25px 0 22px;border-bottom:1px solid #d4dfed}.data-path b{font-size:16px;font-weight:600}.data-path span{font-size:13px;color:#7794b4}.facts{margin:0}.facts>div{display:grid;grid-template-columns:92px 1fr;gap:20px;padding:14px 0;border-bottom:1px solid var(--line);font-size:13px}.facts dt{color:var(--ink);font-weight:600}.facts dd{margin:0;color:var(--muted)}.contact-section{display:flex;align-items:center;justify-content:space-between;gap:30px;padding:44px 0}.contact-section h2{font-size:23px;font-weight:600;margin:0 0 8px}.contact-section p{font-size:14px;color:var(--muted);margin:0}.contact-section>a{font-size:17px}.site-footer{background:var(--paper);border-top:1px solid var(--line)}.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;padding:25px 0;font-size:12px;color:var(--muted)}.footer-links{display:flex;gap:20px}.footer-links a{color:var(--muted)}.document-head{padding:56px 0 36px;border-bottom:1px solid var(--line)}.document-head h1{font-size:40px;margin:14px 0}.document-head p{font-size:14px;color:var(--muted);max-width:790px}.document-layout{display:grid;grid-template-columns:180px minmax(0,1fr);gap:60px;padding:38px 0 65px}.toc{align-self:start;position:sticky;top:24px;display:flex;flex-direction:column;gap:12px;font-size:13px;padding-right:15px}.toc span{font-size:11px;letter-spacing:1px;color:var(--muted);margin-bottom:6px}.toc a{color:var(--muted);text-decoration:none}.document{max-width:790px;font-size:14px;color:#42566f;overflow-wrap:anywhere}.document section{scroll-margin-top:24px;margin:0 0 34px}.document h2{font-size:21px;color:var(--ink);margin:0 0 13px;font-weight:650}.document h3{color:var(--ink);font-size:16px;margin:20px 0 8px}.document p{margin:0 0 12px}.document ul,.document ol{padding-left:22px;margin:10px 0 15px}.document li{padding-left:4px;margin:8px 0}.notice{padding:18px 20px;background:#eff5ff;border-left:3px solid var(--blue);border-radius:0 4px 4px 0;margin-bottom:30px;color:#315481;font-size:14px}.document code{font-size:12px;background:#edf2f7;padding:2px 5px;border-radius:3px}.policy-table{width:100%;border-collapse:collapse;margin:17px 0 22px;font-size:13px}.policy-table th,.policy-table td{text-align:left;padding:12px;border:1px solid var(--line);vertical-align:top}.policy-table th{background:var(--paper);color:var(--ink);font-weight:600}.policy-table th:first-child{width:26%}.policy-table td p{margin:0}.inline-link{white-space:nowrap}
@media(max-width:900px){.wrap{width:calc(100% - 40px)}.hero{gap:30px;padding-top:48px}h1{font-size:42px}.book-visual{min-height:350px}.book{width:210px;padding:22px}.book img{width:145px;height:145px}.workflow{grid-template-columns:1fr 1fr;gap:28px}.cloud-layout{gap:32px}.document-layout{grid-template-columns:140px minmax(0,1fr);gap:28px}.intro-strip{font-size:12px}.brand small{display:none}}
@media(max-width:620px){.wrap{width:calc(100% - 36px)}.header-inner{min-height:76px;gap:12px}.brand{font-size:20px;gap:7px}.brand img{width:32px;height:32px}.nav{gap:14px;font-size:12px}.hero{grid-template-columns:1fr;gap:35px;padding:40px 0}h1{font-size:43px;letter-spacing:-1px}.lead{font-size:15px}.book-visual{min-height:320px}.book{width:210px}.intro-strip{flex-direction:column;align-items:flex-start;gap:8px}.section{padding:44px 0}.section-heading{display:block}.section-heading p{margin-top:16px}.workflow{gap:25px 22px}.cloud-layout{grid-template-columns:1fr;gap:16px}.contact-section{align-items:flex-start;flex-direction:column;gap:17px;padding:33px 0}.footer-inner{align-items:flex-start;gap:12px}.footer-links{gap:18px}.document-head{padding:32px 0 24px}.document-head h1{font-size:32px}.document-layout{display:block;padding-top:25px}.toc{position:static;display:flex;flex-direction:row;flex-wrap:wrap;gap:10px 18px;border-bottom:1px solid var(--line);padding:0 0 20px;margin-bottom:28px}.toc span{width:100%;margin:0}.policy-table th,.policy-table td{padding:9px}.policy-table th:first-child{width:30%}}
