/* PaperReply content surfaces; the drawing's blue/red meaning is preserved. */
:root{
  --bg:var(--site-bg,#f5f7fc);--surface:var(--site-surface,#fff);--surface-2:var(--site-soft,#edf2ff);
  --border:var(--site-line,#dce3f0);--text:var(--site-ink,#101b35);--text-muted:var(--site-muted,#5f6d86);
  --brand:var(--site-blue,#315efb);--brand-light:var(--site-blue,#315efb);--blue:#315efb;--red:#d94357;--code-bg:#f2f5fc;
}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;background:var(--bg);color:var(--text);font:16px/1.75 var(--site-font,"Segoe UI","PingFang SC","Microsoft YaHei",system-ui,sans-serif)}
a{color:inherit;text-decoration:none}
a:focus-visible{outline:3px solid var(--brand);outline-offset:5px}
.skip-link{position:fixed;top:12px;left:16px;z-index:20;padding:10px 16px;background:var(--text);color:white;border-radius:10px;transform:translateY(-170%)}
.skip-link:focus{transform:none}
.container{width:min(1180px,calc(100% - 56px));max-width:none;margin:0 auto;padding:58px 0 18px;min-width:0}
.hero{text-align:center;padding:0 0 28px}
.hero h1{font-size:clamp(40px,6.5vw,72px);font-weight:800;line-height:1.12;letter-spacing:-.055em;color:var(--brand);margin:0 0 16px;overflow-wrap:anywhere}
.hero .sub{color:var(--text-muted);font-size:18px;line-height:1.8;margin:0 auto;max-width:800px}
.hero .links{margin-top:28px;display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.hero .links a{display:inline-flex;align-items:center;justify-content:center;padding:12px 22px;min-height:48px;border-radius:11px;font-size:14px;font-weight:650;transition:transform .2s,box-shadow .2s,background .2s}
.link-github{background:var(--brand);color:#fff;border:1px solid var(--brand);box-shadow:0 6px 14px #315efb20}
.link-github:hover{background:#224ada;transform:translateY(-2px)}
.link-bili{background:#fff;color:var(--brand);border:1px solid #cddafb}
.link-bili:hover{background:#edf2ff;transform:translateY(-2px)}
.section{margin:26px 0;background:var(--surface);border:1px solid var(--border);border-radius:20px;padding:32px;min-width:0;overflow-wrap:anywhere}
.section h2{font-size:25px;font-weight:720;line-height:1.45;letter-spacing:-.03em;margin:0 0 24px;padding-bottom:18px;border-bottom:1px solid var(--border);color:var(--text)}
.section h3{font-size:18px;line-height:1.6}
.section>p{font-size:16px}
.spec-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.spec-card{min-width:0;background:#f7f9ff;border:1px solid #e3eafa;border-radius:15px;padding:20px;transition:transform .25s,border-color .25s}
.spec-card:hover{border-color:#b5c7fb;transform:translateY(-2px)}
.spec-card .label{font-size:12px;color:var(--text-muted);letter-spacing:.03em;margin-bottom:9px}
.spec-card .value{font-size:17px;font-weight:650;color:var(--text);line-height:1.55}
table{width:100%;border-collapse:collapse;table-layout:fixed;font-size:14px;line-height:1.8}
th,td{padding:13px 16px;text-align:left;vertical-align:top;border-bottom:1px solid var(--border);overflow-wrap:anywhere}
th{color:#526583;font-weight:650;font-size:13px;background:#f7f9fe}
td{color:var(--text)}
tr:hover td{background:#f7f9ff}
.color-demo{display:inline-flex;align-items:center;gap:8px}
.color-swatch{display:inline-block;width:14px;height:14px;border-radius:4px;border:1px solid #0001}
.swatch-blue{background:#3b82f6}
.swatch-red{background:#ef4444}
.pin-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.pin-item{min-width:0;background:#f7f9ff;border:1px solid #e2e9f8;border-radius:11px;padding:12px 15px;display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px 14px;font-size:14px}
.pin-item .pin{color:var(--brand);font-weight:600}
.pin-item .func{color:var(--text-muted)}
code{font-family:"Cascadia Code",Consolas,monospace;font-size:.92em;color:#3451a0;overflow-wrap:anywhere}
pre{max-width:100%;background:var(--code-bg);border:1px solid #e0e7f5;border-radius:14px;padding:24px;overflow:auto;font:14px/1.85 "Cascadia Code",Consolas,monospace;color:#253752;white-space:pre;overflow-wrap:normal;margin:0}
pre .kw{color:#ac366e}
pre .type{color:#245ab5}
pre .num{color:#7950b5}
pre .comment{color:#60758b}
.flow-steps{display:flex;flex-wrap:wrap;gap:9px;align-items:center}
.flow-step{min-width:0;background:#f1f5ff;border:1px solid #dfe8ff;border-radius:11px;padding:12px 15px;font-size:14px;color:#3457a1;font-weight:600}
.flow-arrow{color:#7c93bc;font-size:20px}
.dual-color{display:flex;gap:16px;flex-wrap:wrap}
.color-box{flex:1 1 240px;min-width:0;border-radius:15px;padding:24px;text-align:center;font-weight:650;font-size:20px}
.box-local{background:#edf3ff;border:1px solid #cedfff;color:#2857ca}
.box-remote{background:#fff1f3;border:1px solid #f5d3d8;color:#b73b50}
.bug-report-bottom{max-width:1124px;margin:0 auto 34px;padding:24px;border:1px solid var(--border);border-radius:20px;background:#edf2ff;text-align:center}
.bug-report-bottom .bug-report-link{font:600 14px/1.5 var(--site-font,"Segoe UI",system-ui,sans-serif);min-height:46px;display:inline-flex;align-items:center;justify-content:center;background:#fff;color:#315efb;border:1px solid #c9d8ff;border-radius:11px;padding:12px 20px}
footer{max-width:1124px;margin:0 auto;padding:27px 20px 32px;text-align:center;color:var(--text-muted);font-size:12px;line-height:2;border-top:1px solid var(--border);overflow-wrap:anywhere}
@media(max-width:960px){.container{padding-top:46px}.spec-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.pin-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.section{padding:28px}.bug-report-bottom,footer{margin-inline:28px}}
@media(max-width:640px){.container{padding:36px 18px 18px}.hero{padding-bottom:15px}.hero .sub{font-size:16px}.section{padding:24px 20px;margin:20px 0}.section h2{font-size:23px;padding-bottom:15px;margin-bottom:20px}.spec-grid{gap:10px}.spec-card{padding:17px 14px}.spec-card .value{font-size:16px}.pin-grid{grid-template-columns:minmax(0,1fr)}th,td{padding:10px 8px;font-size:13px}th{font-size:12px}pre{padding:18px;font-size:13px}.color-box{padding:21px;font-size:18px}.flow-step{font-size:13px;padding:10px 12px}.bug-report-bottom,footer{margin-inline:18px}.bug-report-bottom{padding:20px}}
@media(max-width:360px){.spec-grid{grid-template-columns:minmax(0,1fr)}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}.spec-card:hover,.hero .links a:hover{transform:none}}
@media(max-width:820px){.container{width:calc(100% - 40px);padding-inline:0}}
@media(max-width:420px){.container{width:calc(100% - 32px);padding-inline:0}}

/* Code and dense tables scroll inside their card, never the document. */
.container{overflow-wrap:anywhere}
.hero .links a,.flow-step,.bug-report-bottom .bug-report-link{max-width:100%;min-width:0;overflow-wrap:anywhere;text-align:center}
.color-swatch,.flow-arrow{flex-shrink:0}
pre{min-width:0;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch}
footer a{display:inline-flex;align-items:center;min-height:44px;max-width:100%;overflow-wrap:anywhere}
@media(max-width:1024px){
  .spec-grid,.pin-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:820px){
  .table-scroll{min-width:0;max-width:100%;overflow-x:auto;overscroll-behavior-x:contain;-webkit-overflow-scrolling:touch}
  .table-scroll table{min-width:30rem;table-layout:fixed}
  .flow-steps{flex-direction:column;align-items:stretch;gap:8px}
  .flow-step{font-size:15px}
  .flow-arrow{align-self:center;display:grid;place-items:center;width:24px;height:24px;line-height:1;transform:rotate(90deg)}
}
@media(max-width:680px){
  .section{padding:24px 20px}
  .pin-grid{grid-template-columns:minmax(0,1fr)}
  th,td{padding:12px 10px;font-size:14px}
  pre{padding:18px;font-size:14px}
  .hero .links a{font-size:15px;flex:1 1 180px}
}
@media(max-width:420px){
  .spec-grid{grid-template-columns:minmax(0,1fr)}
  .section{padding:22px 18px}
  .color-box{padding:20px 15px}
}
@media(hover:none){.spec-card:hover,.hero .links a:hover{transform:none}}