:root{--ink: #1a1a1a;--muted: #6b7280;--border: #e5e7eb;--bg-soft: #fafafa}html,body{max-width:100%;overflow-x:hidden}body{background-color:#fff;color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.55}.app-shell{max-width:640px;margin:0 auto;padding:2rem 1rem 4rem}a{color:var(--ink)}.btn-dark,.btn-outline-dark:hover{background-color:var(--ink);border-color:var(--ink)}.code-pill{display:inline-flex;align-items:center;gap:.5rem;font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;letter-spacing:.05em;background-color:var(--bg-soft);border:1px solid var(--border);border-radius:999px;padding:.25rem .75rem;font-size:.9rem;max-width:100%;overflow-wrap:anywhere}.card{border-color:var(--border)}.text-muted-2{color:var(--muted)}.unread{background-color:var(--bg-soft);border-left:3px solid var(--ink)}.navbar{border-bottom:1px solid var(--border)}input,textarea,select{font-size:16px}@media(max-width:767.98px){.btn,.nav-link,.form-control,.form-select,.input-group .form-control,.input-group .btn{min-height:44px}textarea.form-control{min-height:44px;height:auto}}.btn{display:inline-flex;align-items:center;justify-content:center}.form-check-input{min-height:1.25em;min-width:1.25em;margin-top:.15em;flex-shrink:0}.form-check{display:flex;align-items:flex-start;gap:.5rem;padding-left:0}.form-check .form-check-input{margin-left:0}.form-check .form-check-label{margin-top:.1em}.msg-compose{min-height:6rem;max-height:16rem;overflow-y:auto;resize:none}.msg-body,.code-pill,h1,h2,p{overflow-wrap:anywhere}.header-safe{padding-top:env(safe-area-inset-top,0);padding-left:env(safe-area-inset-left,0);padding-right:env(safe-area-inset-right,0)}.footer-safe{padding-bottom:calc(env(safe-area-inset-bottom,0) + 1rem);padding-left:env(safe-area-inset-left,0);padding-right:env(safe-area-inset-right,0)}.menu-toggle{min-width:44px}.menu-backdrop{position:fixed;inset:0;z-index:1020;background:transparent}.menu-sheet{position:absolute;top:100%;right:0;margin-top:.5rem;width:min(280px,calc(100vw - 2rem));background:#fff;border:1px solid var(--border);border-radius:.5rem;box-shadow:0 8px 24px #0000001f;padding:.5rem;z-index:1030}.menu-sheet a,.menu-sheet button{display:flex;align-items:center;width:100%;min-height:44px;padding:.5rem .75rem;text-align:left;background:none;border:none;border-radius:.375rem;text-decoration:none;color:var(--ink)}.menu-sheet a:hover,.menu-sheet button:hover{background-color:var(--bg-soft)}.menu-sheet hr{margin:.375rem 0}.segmented{display:flex;border:1px solid var(--border);border-radius:.5rem;overflow:hidden}.segmented button{flex:1 1 0;min-height:44px;border:none;background:#fff;color:var(--ink);font-weight:500}.segmented button.active{background-color:var(--ink);color:#fff}@media(max-width:767.98px){.navbar{position:sticky;top:0;z-index:1030}.sticky-search{position:sticky;top:calc(52px + env(safe-area-inset-top,0));background:#fff;padding-top:.5rem;padding-bottom:.5rem;z-index:10}}.w-phone-100{width:100%}@media(min-width:768px){.w-phone-100{width:auto}}.unread-dot{display:inline-block;width:8px;height:8px;border-radius:999px;background-color:var(--ink);flex:0 0 auto}@media(max-width:575.98px){.toc-scroll{max-height:220px;overflow-y:auto}.toc-scroll li{padding:.25rem 0}.toc-scroll a{display:inline-block;min-height:44px;line-height:1.5;padding:.1rem 0}}@media(max-width:575.98px){.app-shell{padding-left:max(1rem,env(safe-area-inset-left,0));padding-right:max(1rem,env(safe-area-inset-right,0))}h1.h2{font-size:1.5rem}h1.h3{font-size:1.3rem}}