/* Wave1 reading-pack shell · tokens via site-tokens.css · primary #0077FA
 * Mobile-first narrow (≤720) + desktop grid preserved at ≥721
 */
:root{
  --primary: var(--design-primary);
  --primary-soft: var(--design-primary-soft);
  --success: var(--design-success);
  --success-soft: var(--design-success-soft);
  --warning: var(--design-warning);
  --warning-soft: var(--design-warning-soft);
  --danger: var(--design-danger);
  --danger-soft: var(--design-danger-soft);
  --text1: var(--design-text-1);
  --text2: var(--design-text-2);
  --text3: var(--design-text-3);
  --border: var(--design-border);
  --fill1: var(--design-fill-0);
  --fill2: var(--design-fill-2);
  --white: var(--design-bg);
  --r: var(--design-radius-large);
  --shadow: var(--design-shadow-1);
  --pad-x: 16px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;font:15px/1.65 system-ui,-apple-system,"PingFang SC","HarmonyOS Sans","Noto Sans SC",sans-serif;color:var(--text1);background:var(--fill1);overflow-x:hidden}
a{color:var(--primary);text-decoration:none}
a:hover{text-decoration:underline}
.topbar{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.94);backdrop-filter:blur(8px);border-bottom:1px solid var(--border);box-shadow:var(--design-shadow-1)}
.topbar-inner{max-width:960px;margin:0 auto;padding:10px var(--pad-x);padding-left:max(var(--pad-x),env(safe-area-inset-left));padding-right:max(var(--pad-x),env(safe-area-inset-right));display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.brand{font-weight:700;font-size:14px;color:var(--text1);white-space:nowrap;max-width:100%;overflow:hidden;text-overflow:ellipsis}
.brand span{color:var(--primary)}
.nav{display:flex;gap:6px;flex-wrap:wrap;flex:1;align-items:center;min-width:0}
.nav a,.nav .pill-link{font-size:12px;padding:6px 10px;border-radius:var(--design-radius-medium);color:var(--text2);border:1px solid transparent;display:inline-flex;align-items:center;justify-content:center;min-height:32px}
.nav a:hover{background:var(--design-primary-soft);text-decoration:none;color:var(--primary)}
.nav a.active{background:var(--design-primary-soft);color:var(--primary);font-weight:600;border-color:rgba(0,119,250,.25)}
.badge{font-size:11px;padding:2px 10px;border-radius:var(--design-radius-full);background:var(--warning-soft);color:var(--warning);font-weight:600;border:1px solid rgba(252,136,0,.25);white-space:nowrap}
.wrap{max-width:960px;margin:0 auto;padding:20px var(--pad-x) 64px;padding-left:max(var(--pad-x),env(safe-area-inset-left));padding-right:max(var(--pad-x),env(safe-area-inset-right));padding-bottom:max(64px,env(safe-area-inset-bottom))}
.hero{background:var(--design-bg);border:1px solid var(--border);border-radius:var(--design-radius-large);padding:28px 24px;box-shadow:var(--design-shadow-2);margin-bottom:20px}
.hero h1{margin:0 0 8px;font-size:22px;line-height:1.35;letter-spacing:-.01em;overflow-wrap:anywhere;word-break:break-word}
.hero .sub{color:var(--text2);font-size:14px;margin:0 0 16px}
.pills{display:flex;flex-wrap:wrap;gap:8px}
.pill{font-size:12px;padding:4px 12px;border-radius:var(--design-radius-full);border:1px solid var(--border);background:#fff;color:var(--text2)}
.pill.p0{border-color:rgba(0,119,250,.25);background:var(--primary-soft);color:var(--primary);font-weight:600}
.pill.warn{border-color:rgba(252,136,0,.3);background:var(--warning-soft);color:var(--warning);font-weight:600}
.section-label{font-size:13px;font-weight:700;color:var(--text2);margin:22px 0 10px;letter-spacing:.02em}
.grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}
.toc-card{display:block;background:var(--design-bg);border:1px solid var(--border);border-radius:var(--r);padding:16px 16px 14px;box-shadow:var(--shadow);text-decoration:none;color:inherit;transition:border-color .15s,box-shadow .15s;min-height:44px}
.toc-card:hover{border-color:rgba(0,119,250,.45);box-shadow:0 6px 20px rgba(0,119,250,.08);text-decoration:none}
.toc-card .code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;color:var(--primary);background:var(--primary-soft);padding:2px 8px;border-radius:var(--design-radius-medium);font-weight:600}
.toc-card .genre{font-size:11px;color:var(--text3);margin-left:6px}
.toc-card .title{margin:10px 0 6px;font-size:15px;font-weight:650;line-height:1.4;color:var(--text1);overflow-wrap:anywhere;word-break:break-word}
.toc-card .one{font-size:12.5px;color:var(--text2);margin:0;line-height:1.5}
.toc-card .lang{margin-top:10px;font-size:11px;color:var(--primary);font-weight:600}
.article-card{background:var(--design-bg);border:1px solid var(--border);border-radius:var(--r);padding:24px 22px;box-shadow:var(--shadow);margin-bottom:16px;overflow:hidden}
.article-card h1{margin:0 0 10px;font-size:22px;line-height:1.35;overflow-wrap:anywhere;word-break:break-word}
.article-card .meta{margin:0 0 16px}
.tag{display:inline-block;font-size:11px;padding:2px 8px;border-radius:var(--design-radius-full);margin:0 4px 4px 0;background:#fff;border:1px solid var(--border);color:var(--text3)}
.tag.info{background:var(--primary-soft);border-color:rgba(0,119,250,.3);color:var(--primary)}
.prose{min-width:0;overflow-wrap:anywhere;word-break:break-word}
.prose h2,.prose h3,.prose h4{color:var(--text1);overflow-wrap:anywhere}
.prose h2{font-size:18px;margin:22px 0 10px}
.prose h3{font-size:16px;margin:18px 0 8px}
.prose h4{font-size:14px;margin:14px 0 6px}
.prose p,.prose li{color:var(--text2);font-size:14px;line-height:1.7}
.prose ul,.prose ol{padding-left:1.2em;margin:8px 0}
.prose blockquote,.callout{padding:12px 14px;border-radius:var(--design-radius-medium);margin:12px 0;font-size:13px;line-height:1.6;background:var(--design-info-soft);border:1px solid rgba(0,119,250,.25);color:#004FB3}
.prose blockquote{margin-left:0;margin-right:0}
.table-wrap{display:block;width:100%;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin:10px 0;border:1px solid var(--border);border-radius:6px;overscroll-behavior-x:contain}
.table-wrap table,.prose table{width:100%;border-collapse:collapse;font-size:13px;margin:0;min-width:480px}
.prose > table{display:block;width:100%;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin:10px 0}
.prose th,.prose td,.table-wrap th,.table-wrap td{padding:10px 12px;text-align:left;border:1px solid var(--border);vertical-align:top}
.prose th,.table-wrap th{background:var(--fill1);font-weight:600}
.prose a.mono,.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;word-break:break-all;overflow-wrap:anywhere}
.prose a{overflow-wrap:anywhere;word-break:break-word}
.draft-banner{padding:10px 14px;border-radius:var(--design-radius-medium);margin:0 0 16px;font-size:13px;line-height:1.55;background:var(--warning-soft);border:1px solid rgba(252,136,0,.3);color:#A65D00}
.foot{margin-top:28px;padding-top:16px;border-top:1px solid var(--border);font-size:12px;color:var(--text3);overflow-wrap:anywhere;word-break:break-word}
.note{background:#fff8eb;border-left:3px solid #FC8800;padding:12px 14px;border-radius:0 10px 10px 0;margin:0 0 18px;color:#A65D00;font-size:13px}


/* —— Narrow screens (phone-first 390) —— */
@media (max-width:720px){
  :root{--pad-x:14px}
  body{font-size:16px;line-height:1.7}
  .topbar-inner{padding-top:8px;padding-bottom:8px;gap:8px;align-items:flex-start}
  .brand{white-space:normal;font-size:13px;line-height:1.35;flex:1 1 auto;min-width:0}
  .nav{flex:1 1 100%;gap:8px;width:100%}
  .nav a,.nav .pill-link{min-height:44px;min-width:44px;padding:10px 14px;font-size:14px}
  .badge{align-self:center;margin-left:auto}
  .wrap{padding-top:14px;padding-bottom:48px}
  .hero{padding:16px;margin-bottom:14px}
  .hero h1{font-size:20px;line-height:1.4}
  .hero .sub{font-size:14px;line-height:1.65}
  .grid{grid-template-columns:1fr;gap:10px}
  .toc-card{padding:14px 14px 12px}
  .toc-card .title{font-size:15px;line-height:1.45}
  .toc-card .one{font-size:13px;line-height:1.55}
  .toc-card .lang{min-height:28px;display:inline-flex;align-items:center}
  .article-card{padding:16px;border-radius:10px}
  .article-card h1{font-size:20px;line-height:1.4}
  .prose h2{font-size:17px;margin:18px 0 8px}
  .prose h3{font-size:15px;margin:14px 0 6px}
  .prose p,.prose li{font-size:16px;line-height:1.7}
  .prose blockquote,.callout{padding:12px;font-size:14px;line-height:1.65}
  .table-wrap{margin:12px 0;border-radius:6px}
  .table-wrap table,.prose table{font-size:12.5px;min-width:520px}
  .prose th,.prose td,.table-wrap th,.table-wrap td{padding:8px 10px}
  .draft-banner,.note{font-size:13px;padding:12px;line-height:1.6}
  .foot{font-size:12px}
      }

/* Extra-narrow (≤390 class devices) */
@media (max-width:390px){
  :root{--pad-x:12px}
  .hero h1,.article-card h1{font-size:19px}
  .nav a,.nav .pill-link{padding:10px 12px;font-size:13px}
}