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span:first-child{border-width:3px 0 0 3px;top:-2px;left:-2px}.focus-box span:nth-child(2){border-width:3px 3px 0 0;top:-2px;right:-2px}.focus-box span:nth-child(3){border-width:0 3px 3px 0;bottom:-2px;right:-2px}.focus-box span:nth-child(4){border-width:0 0 3px 3px;bottom:-2px;left:-2px}.subject{aspect-ratio:1;background:#ffffff38;border-radius:50%;width:18%;position:absolute;bottom:17%;box-shadow:0 54px 0 22px #ffffff29}.subject--left{left:18%}.subject--right{background:#ffffff29;right:20%}.scan-line{background:var(--rose);height:3px;position:absolute;top:58%;left:9%;right:9%;box-shadow:0 0 22px #bd2d58a6}.section{border-top:1px solid var(--line);width:min(1180px,100% - 40px);margin:0 auto;padding:76px 0}.section__intro{gap:4px;margin-bottom:30px;display:grid}.live-demo__layout{grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);align-items:start;gap:clamp(20px,4vw,40px);display:grid}.live-demo__preview{background:#101827;border:1px solid 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var(--line);background:var(--surface);border-radius:8px}.feature-card{min-height:190px;padding:22px}.feature-card p,.install p,.coverage p,.api-row span{color:var(--muted);line-height:1.65}.install,.coverage{grid-template-columns:minmax(0,.9fr) minmax(320px,1.1fr);align-items:start;gap:clamp(28px,5vw,54px);display:grid}.code-stack{gap:12px;min-width:0;display:grid}pre{color:#e8f8ff;background:#121926;border:1px solid #263247;border-radius:8px;max-width:100%;margin:0;padding:20px;font-size:clamp(.86rem,1.8vw,.98rem);line-height:1.65;overflow-x:auto}code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}.api-table{border:1px solid var(--line);background:var(--surface);border-radius:8px;overflow:hidden}.api-row{grid-template-columns:minmax(170px,.32fr) minmax(0,1fr);gap:22px;padding:18px 20px;display:grid}.api-row+.api-row{border-top:1px solid var(--line)}.api-row strong{color:var(--blue);font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.98rem}.coverage-list{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin:0;padding:0;list-style:none;display:grid}.coverage-list li{border:1px solid var(--line);background:var(--surface);min-height:58px;color:var(--ink);border-radius:8px;align-items:center;padding:12px 14px 12px 42px;font-weight:720;line-height:1.35;display:flex;position:relative}.coverage-list li:before{content:"";background:var(--amber);border-radius:999px;width:10px;height:10px;position:absolute;left:16px;box-shadow:0 0 0 5px #b56a0021}.quality-grid{grid-template-columns:repeat(auto-fit,minmax(150px,1fr))}.guide-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;display:grid}.guide-grid a{border:1px solid 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