:root{color-scheme:light;--ink:#162c45;--muted:#586b80;--blue:#2259d7;--line:#dce4ee;--paper:#f7f9fc;--white:#fff}*{box-sizing:border-box}body{margin:0;color:var(--ink);background:var(--paper);font:16px/1.75 -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif}a{color:var(--blue);text-underline-offset:4px}a:hover{color:#12398e}header,main,footer{width:min(1080px,calc(100% - 48px));margin:auto}header{display:flex;align-items:center;justify-content:space-between;gap:24px;padding:28px 0;border-bottom:1px solid var(--line)}.brand{display:flex;align-items:center;gap:12px;color:var(--ink);font-weight:760;text-decoration:none;letter-spacing:-.4px}.brand img{width:37px;height:37px}nav{display:flex;gap:24px;font-size:14px}nav a{color:var(--muted);text-decoration:none}nav a[aria-current=page]{color:var(--blue);font-weight:700}.eyebrow{color:var(--blue);font-size:12px;font-weight:750;letter-spacing:2px;text-transform:uppercase}.hero{padding:76px 0 60px;display:grid;grid-template-columns:1.1fr 1fr;gap:56px;align-items:center}h1,h2,h3{line-height:1.3;letter-spacing:-.03em}h1{font-size:clamp(36px,4.5vw,52px);margin:18px 0 24px;font-weight:750}h2{font-size:28px;margin:0 0 20px}h3{font-size:19px;margin:0 0 12px}.lead{font-size:18px;color:var(--muted);max-width:650px}.action{display:inline-block;background:var(--blue);color:white;text-decoration:none;border-radius:8px;padding:11px 20px;margin:14px 0}.action:hover{color:white;background:#1946ae}.workspace{background:white;border:1px solid var(--line);border-radius:16px;box-shadow:0 16px 50px #20395b0b;overflow:hidden}.mock-bar{padding:18px 24px;border-bottom:1px solid var(--line);font-size:13px;font-weight:700;display:flex;justify-content:space-between}.demo-label{font-size:11px;color:var(--muted);font-weight:400}.mail-row{padding:21px 24px;display:flex;gap:14px;align-items:center;border-bottom:1px solid #edf1f6}.mail-row:last-child{border:0}.provider{width:38px;height:38px;display:grid;place-items:center;border-radius:10px;font-size:12px;font-weight:750;background:#edf3ff;color:var(--blue);flex-shrink:0}.mail-row:nth-child(3) .provider{background:#e8f5f2;color:#257565}.mail-row:nth-child(4) .provider{background:#fff1df;color:#916322}.mail-row strong{display:block;font-size:14px}.mail-row small{color:var(--muted);font-size:12px}.dot{width:7px;height:7px;border-radius:50%;background:#7b91ab;margin-left:auto}.section{padding:46px 0;border-top:1px solid var(--line)}.cols{display:grid;grid-template-columns:repeat(3,1fr);gap:32px}.cols p{color:var(--muted);font-size:15px;margin:0}.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-top:28px}.step-no{font-family:ui-monospace,monospace;color:var(--blue);font-size:13px;margin-bottom:14px}.callout{background:#edf3ff;border-left:3px solid var(--blue);padding:22px 26px;border-radius:0 8px 8px 0;color:#304b6c}.callout p{margin:0}.contact{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:36px;background:white;border:1px solid var(--line);border-radius:12px;margin:20px 0 56px}.contact p{margin:5px 0 0;color:var(--muted)}footer{padding:24px 0 38px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;color:var(--muted);font-size:12px}footer a{margin-left:16px}.document{max-width:800px;padding:52px 0 65px;margin:0 auto}.document h1{font-size:38px}.document h2{font-size:23px;margin:38px 0 12px}.document p,.document li{color:#41566d}.document li{margin:7px 0}.document ul{padding-left:23px}.document .meta{font-size:13px;color:var(--muted);margin-bottom:32px}.document table{border-collapse:collapse;width:100%;font-size:14px}.document td,.document th{padding:12px;border:1px solid var(--line);text-align:left;vertical-align:top}.document th{background:#edf3ff}code{word-break:break-word;background:#e9eef5;padding:2px 5px;border-radius:3px;font-size:.9em}:focus-visible{outline:3px solid #91b0ff;outline-offset:4px}.skip{position:absolute;top:-80px;left:24px}.skip:focus{top:8px;background:white;padding:8px;z-index:1}@media(max-width:720px){header,main,footer{width:calc(100% - 36px)}header{padding:20px 0;gap:15px;align-items:flex-start}nav{gap:14px;font-size:13px;flex-wrap:wrap;justify-content:flex-end}.brand{white-space:nowrap}.brand img{width:30px;height:30px}.hero{grid-template-columns:1fr;padding:44px 0;gap:32px}.cols,.steps{grid-template-columns:1fr;gap:25px}.section{padding:34px 0}.contact{display:block;padding:25px}.contact>a{display:inline-block;margin-top:14px}.document{padding:32px 0 45px}.document h1{font-size:32px}footer a{margin:0 16px 0 0}}