@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=Manrope:wght@400;500;600;700;800&display=swap');
:root{--bg:#f4f7f8;--paper:#fff;--ink:#13242d;--muted:#6b7d85;--line:#dce6e9;--teal:#16a6a0;--teal-dark:#087f80;--orange:#f08b3e;--shadow:0 20px 60px #1c49500d}*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--ink);font-family:Manrope,"PingFang SC","Microsoft YaHei",sans-serif;font-size:14px;line-height:1.75}.topbar{height:72px;background:rgba(255,255,255,.94);border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;padding:0 42px;position:sticky;top:0;z-index:10;backdrop-filter:blur(12px)}.brand{display:flex;align-items:center;gap:12px;letter-spacing:.01em}.brand-mark{background:var(--teal);color:#fff;font:500 13px 'DM Mono';padding:7px 5px;border-radius:5px}.brand strong{display:block;font-size:15px;letter-spacing:.05em}.brand small{display:block;color:var(--muted);font-size:11px;margin-top:-3px}.top-actions{display:flex;gap:27px}.top-actions a,.source a{color:var(--teal-dark);text-decoration:none;font-weight:700;font-size:12px}.layout{display:flex;max-width:1520px;margin:auto}.sidebar{width:264px;flex:0 0 264px;background:#f8fafb;border-right:1px solid var(--line);min-height:calc(100vh - 72px);position:sticky;top:72px;height:calc(100vh - 72px);padding:29px 20px;display:flex;flex-direction:column}.side-head{font-weight:800;font-size:12px;letter-spacing:.14em;text-transform:uppercase;padding:0 10px 18px;display:flex;justify-content:space-between}.side-head button{display:none;border:0;background:none;font-size:22px}.search{height:39px;background:#fff;border:1px solid var(--line);border-radius:7px;display:flex;align-items:center;padding:0 10px;color:#88a0a6;margin:0 0 20px}.search span{font-size:22px;line-height:1;margin-right:6px}.search input{border:0;outline:0;width:100%;font:inherit;font-size:12px;background:none;color:var(--ink)}nav{overflow:auto;padding-bottom:10px}nav 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h3{margin-top:0}.default-card{background:#eaf7f6;padding:21px;border-radius:9px;margin-top:17px}.default-card h3{margin-top:0}.default-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:15px}.default-grid span{font-size:11px;color:#668087}.default-grid strong{display:block;color:#176f70;font-family:'DM Mono';font-size:12px;margin-top:4px}.mode-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}.mode-grid article{position:relative;padding:22px 20px 17px}.mode-icon{color:var(--teal);font-size:24px;line-height:1;margin-bottom:13px}.mode-grid h3{margin:0 0 6px}.mode-grid small{display:block;color:#94a5aa;margin-top:14px;font-size:10px}.serial-table{border-top:1px solid var(--line);margin:21px 0}.serial-table div{display:grid;grid-template-columns:120px 1fr;padding:12px 0;border-bottom:1px solid var(--line);font-size:12px}.serial-table b{color:var(--ink)}.serial-table span{color:var(--muted)}.diagram{display:flex;align-items:center;justify-content:center;gap:15px;margin:28px 0;padding:22px;background:#fff;border:1px solid var(--line);border-radius:8px;font-size:11px;color:var(--muted)}.diagram div{padding:13px 15px;border:1px solid var(--line);border-radius:6px}.diagram .accent{background:var(--teal);color:#fff;border-color:var(--teal);font-weight:700}.diagram i{font-style:normal;color:var(--teal);font-family:'DM Mono'}.feature-list{display:grid;grid-template-columns:repeat(2,1fr);gap:13px}.feature-list>div{display:grid;grid-template-columns:100px 1fr;gap:8px}.feature-list b{font-size:13px}.at-flow{display:grid;grid-template-columns:1fr 20px 1fr 20px 1fr 20px 1fr;align-items:center;gap:7px;background:#fff;border:1px solid var(--line);padding:20px;border-radius:9px;margin:23px 0}.at-flow>div:not(.arrow){display:flex;flex-direction:column;gap:4px}.at-flow span{font:500 10px 'DM Mono';color:var(--teal)}.at-flow b{font-size:12px}.at-flow 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p{font-size:12px;color:var(--muted);margin:0 0 7px}.command-body pre{margin:5px 0 8px}.copy{border:0;background:#eaf7f6;color:var(--teal-dark);border-radius:4px;padding:5px 8px;font:10px 'DM Mono';cursor:pointer}.faq details{border-bottom:1px solid var(--line)}.faq summary{font-weight:700;color:var(--ink);padding:16px 3px}.faq summary:after{content:'+';float:right;color:var(--teal);font-size:18px}.faq details[open] summary:after{content:'−'}.faq p{color:var(--muted);font-size:12px;padding:0 28px 17px 3px;margin:0}.download-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:23px}.download-card{display:flex;align-items:center;gap:13px;padding:17px;background:#fff;border:1px solid var(--line);border-radius:8px;text-decoration:none;color:var(--ink)}.download-card:hover{border-color:var(--teal)}.download-card .pdf{background:#fff0e5;color:#d6792e;font:500 10px 'DM Mono';padding:7px 5px;border-radius:4px}.download-card div{flex:1}.download-card 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@media(max-width:900px){.topbar{padding:0 20px}.top-actions{gap:10px}.top-actions a{font-size:10px}.sidebar{position:fixed;z-index:20;left:-280px;top:0;height:100vh;transition:left .25s;box-shadow:10px 0 40px #0002}.sidebar.open{left:0}.side-head button{display:block}.content{padding:25px 20px}.mobile-nav{display:block;border:1px solid var(--line);background:#fff;border-radius:5px;padding:7px 11px;color:var(--teal-dark);font-weight:700;margin-bottom:14px}.mobile-nav span{font-size:11px}.hero{padding:35px 25px 25px}.hero h1{font-size:36px}.hero:after{font-size:120px;right:-10px}.stats{margin-bottom:45px}.steps,.feature-list{grid-template-columns:1fr 1fr}.default-grid{grid-template-columns:1fr 1fr}.at-flow{grid-template-columns:1fr;gap:11px}.at-flow .arrow{transform:rotate(90deg)}.command-body{grid-template-columns:1fr}.download-grid{grid-template-columns:1fr}}
@media(max-width:560px){.top-actions a:first-child{display:none}.hero-note{flex-wrap:wrap;gap:8px 14px}.stats{grid-template-columns:1fr 1fr}.stats div:nth-child(2){border-right:0}.stats div:nth-child(-n+2){border-bottom:1px solid var(--line)}.steps,.mode-grid,.feature-list,.two-col{grid-template-columns:1fr}.feature-list>div{grid-template-columns:85px 1fr}.diagram{flex-wrap:wrap}.doc-section h2{font-size:27px}}