/* LoginDeck Help Center — same tokens as logindeck.com (index.html), plus a dark scheme
 * derived from the site's dark app window (#0b0f1a / #0f1320 / #141a2b). */
:root{
  --bg:#f7f7f4; --bg-2:#efefeb; --paper:#ffffff;
  --ink:#0e1220; --ink-2:#4b5265; --ink-3:#676e82; --navy:#101a33;
  --line:rgba(14,18,32,.11); --line-2:rgba(14,18,32,.06);
  --blue:#2a80e2; --blue-2:#5e9ae7; --blue-3:#8ab4ea; --blue-soft:#e8f0fc; --blue-ink:#1c5fb0;
  --ok:#1f8a5b; --ok-soft:#e5f5ec; --ok-ink:#16704a;
  --warn:#b57611; --warn-soft:#fbf1dc; --warn-ink:#83550b;
  --red:#c8402f; --red-soft:#fcebe8; --red-ink:#a3301f;
  --code-bg:#0e1424; --code-ink:#e4e9f5;
  --shadow:0 1px 2px rgba(14,18,32,.04), 0 12px 40px -12px rgba(14,18,32,.12);
  --shadow-lg:0 2px 4px rgba(14,18,32,.05), 0 24px 60px -18px rgba(14,18,32,.28);
  --hh:64px; --maxw:1400px; --r:16px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root{
    --bg:#0b0f1a; --bg-2:#172035; --paper:#111829;
    --ink:#e8ecf5; --ink-2:#b4bcd0; --ink-3:#8f98ae; --navy:#f1f4fb;
    --line:rgba(255,255,255,.11); --line-2:rgba(255,255,255,.06);
    --blue-soft:rgba(94,154,231,.15); --blue-ink:#8ab4ea;
    --ok:#4cc38a; --ok-soft:rgba(76,195,138,.12); --ok-ink:#7fd9ad;
    --warn:#e3aa4a; --warn-soft:rgba(227,170,74,.12); --warn-ink:#f0c47a;
    --red:#ef6b5a; --red-soft:rgba(239,107,90,.12); --red-ink:#f5a194;
    --code-bg:#070a12;
    --shadow:0 1px 2px rgba(0,0,0,.3), 0 12px 40px -12px rgba(0,0,0,.55);
    --shadow-lg:0 2px 4px rgba(0,0,0,.3), 0 24px 60px -18px rgba(0,0,0,.7);
    color-scheme:dark;
  }
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{background:var(--bg);color:var(--ink);font:400 16px/1.65 'Inter',system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;min-height:100vh;display:flex;flex-direction:column}
a{color:var(--blue-ink);text-decoration:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit}
.sr{position:absolute!important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
:where(a,button,summary,input,[tabindex]):focus-visible{outline:2px solid var(--blue);outline-offset:2px;border-radius:6px}
@media (prefers-color-scheme:dark){:where(a,button,summary,input,[tabindex]):focus-visible{outline-color:var(--blue-2)}}
.skip{position:absolute;left:12px;top:-60px;z-index:100;background:var(--paper);color:var(--ink);padding:10px 14px;border-radius:10px;box-shadow:var(--shadow-lg);font-weight:600}
.skip:focus{top:12px}
svg{fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.mark,.mark *{stroke:none}

/* ============ header ============ */
.hc-header{position:sticky;top:0;z-index:40;background:color-mix(in srgb,var(--bg) 84%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);border-bottom:1px solid var(--line-2)}
.hc-bar{height:var(--hh);max-width:var(--maxw);margin:0 auto;padding:0 20px;display:flex;align-items:center;gap:14px}
.brand{display:inline-flex;align-items:center;gap:9px;font-weight:800;font-size:19px;letter-spacing:-.02em;flex:none}
.brand .mark{width:32px;height:27px}
.brand .login{color:var(--navy)} .brand .deck{color:var(--blue)}
@media (prefers-color-scheme:dark){.brand .deck{color:var(--blue-2)}}
.hc-label{display:inline-flex;align-items:center;height:24px;padding-left:14px;border-left:1px solid var(--line);color:var(--ink-2);font-weight:600;font-size:15px;white-space:nowrap;flex:none}
.hc-label:hover{color:var(--ink)}
.hc-spacer{flex:1}
.hc-actions{display:flex;align-items:center;gap:8px;flex:none;margin-left:auto}
.icon-btn{display:none;place-items:center;width:40px;height:40px;border-radius:11px;border:1px solid var(--line);background:var(--paper);color:var(--ink-2);cursor:pointer;flex:none}
.icon-btn:hover{color:var(--ink);border-color:rgba(14,18,32,.22)}
.icon-btn svg{width:19px;height:19px}
.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:12px;font-weight:600;font-size:14.5px;line-height:1;border:1px solid transparent;transition:transform .18s,box-shadow .18s,background .18s;cursor:pointer;white-space:nowrap}
.btn svg{width:16px;height:16px;flex:none;stroke-width:2.2}
.btn-primary{background:var(--blue);color:#fff;box-shadow:0 8px 24px -8px rgba(42,128,226,.6)}
.btn-primary:hover{background:#2472cc;transform:translateY(-1px);box-shadow:0 14px 30px -10px rgba(42,128,226,.65)}
.btn:active{transform:translateY(1px)}

/* ============ search ============ */
.search{position:relative;flex:1;max-width:520px;margin:0 auto}
.search-icon{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--ink-3);pointer-events:none;display:flex}
.search-icon svg{width:18px;height:18px}
.search input{width:100%;height:40px;padding:0 40px 0 38px;border-radius:12px;border:1px solid var(--line);background:var(--paper);color:var(--ink);font:inherit;font-size:14.5px;transition:border-color .15s,box-shadow .15s;-webkit-appearance:none;appearance:none}
.search input::placeholder{color:var(--ink-3)}
.search input::-webkit-search-cancel-button{-webkit-appearance:none}
.search input:focus{outline:none;border-color:var(--blue);box-shadow:0 0 0 4px rgba(42,128,226,.18)}
.search-kbd{position:absolute;right:10px;top:50%;transform:translateY(-50%);font:600 12px/1 'JetBrains Mono',ui-monospace,monospace;color:var(--ink-3);border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;padding:3px 6px;background:var(--bg);pointer-events:none}
.search input:focus ~ .search-kbd,.search input:not(:placeholder-shown) ~ .search-kbd{display:none}
.search-pop{position:absolute;top:calc(100% + 8px);left:0;right:0;min-width:340px;z-index:60;background:var(--paper);border:1px solid var(--line);border-radius:14px;box-shadow:var(--shadow-lg);max-height:min(70vh,500px);overflow:auto;padding:6px;text-align:left}
.search-list{list-style:none}
.search-list a{display:block;padding:10px 12px;border-radius:10px;color:var(--ink)}
.search-list [aria-selected="true"] a,.search-list a:hover{background:var(--blue-soft)}
.r-title{display:block;font-weight:650;font-size:14.5px;line-height:1.35}
.r-meta{display:block;font-size:12px;color:var(--ink-3);margin-top:2px}
.r-snip{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;font-size:13px;line-height:1.45;color:var(--ink-2);margin-top:4px}
.search mark{background:rgba(42,128,226,.2);color:inherit;border-radius:3px;padding:0 1px}
.search-empty{padding:14px 12px;font-size:14px;color:var(--ink-2)}

/* ============ layout ============ */
.layout{flex:1;width:100%;max-width:var(--maxw);margin:0 auto;display:grid;grid-template-columns:272px minmax(0,1fr)}
.layout.has-toc{grid-template-columns:272px minmax(0,1fr) 232px}
.main{min-width:0;padding:30px 48px 72px;outline:none}
.main > *{max-width:780px;margin-left:auto;margin-right:auto}
.main-home{flex:1;outline:none}

/* ============ sidebar tree ============ */
.sidebar{position:sticky;top:var(--hh);height:calc(100vh - var(--hh));overflow-y:auto;overscroll-behavior:contain;border-right:1px solid var(--line-2);padding:22px 14px 48px 20px}
.sidebar-head{display:none}
.tree-home{display:inline-flex;align-items:center;gap:6px;font-size:13.5px;font-weight:500;color:var(--ink-3);padding:4px 8px;margin:0 0 12px -8px;border-radius:8px}
.tree-home:hover{color:var(--ink)}
.tree-home svg{width:15px;height:15px}
.tree-cats,.tree-items{list-style:none}
.tree-cat + .tree-cat{margin-top:2px}
.tree-row{display:flex;align-items:center;border-radius:10px}
.tree-link{flex:1;display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:10px;font-weight:600;font-size:14.5px;color:var(--ink);line-height:1.3}
.tree-link:hover{background:var(--bg-2)}
.tree-link[aria-current="page"]{background:var(--blue-soft);color:var(--blue-ink)}
.tree-emoji{width:20px;text-align:center;flex:none}
.tree-toggle{display:none;width:32px;height:32px;border:0;background:none;border-radius:8px;color:var(--ink-3);cursor:pointer;place-items:center;flex:none}
.js .tree-toggle{display:grid}
.tree-toggle:hover{background:var(--bg-2);color:var(--ink)}
.tree-toggle svg{width:16px;height:16px;transition:transform .2s}
.tree-toggle[aria-expanded="true"] svg{transform:rotate(90deg)}
.tree-items{margin:2px 0 10px 19px;padding-left:12px;border-left:1px solid var(--line)}
.js .tree-cat:not(.open) .tree-items{display:none}
.tree-items a{display:block;padding:6px 10px;border-radius:8px;font-size:14px;line-height:1.4;color:var(--ink-2)}
.tree-items a:hover{color:var(--ink);background:var(--bg-2)}
.tree-items a[aria-current="page"]{background:var(--blue-soft);color:var(--blue-ink);font-weight:600}
.scrim{display:none}

/* ============ breadcrumbs + article head ============ */
.crumbs ol{list-style:none;display:flex;flex-wrap:wrap;align-items:center;font-size:13.5px;color:var(--ink-3);margin-bottom:18px}
.crumbs li{display:inline-flex;align-items:center;min-width:0}
.crumbs li + li::before{content:"›";margin:0 8px;color:var(--ink-3)}
.crumbs a{color:var(--ink-2)}
.crumbs a:hover{color:var(--blue-ink)}
.crumbs [aria-current]{color:var(--ink-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:40ch}
.article-head{padding-bottom:22px;margin-bottom:28px;border-bottom:1px solid var(--line)}
.article-head h1,.cat-head h1{font-size:clamp(28px,3.6vw,38px);line-height:1.15;letter-spacing:-.028em;font-weight:800;color:var(--navy)}
.h1-emoji{margin-right:.32em;font-weight:400}
.lede{font-size:18px;line-height:1.55;color:var(--ink-2);margin-top:10px;max-width:62ch}
.meta{font-size:13.5px;color:var(--ink-3);margin-top:12px}

/* ============ prose ============ */
.prose{font-size:16.5px;line-height:1.7}
.prose > :first-child{margin-top:0}
.prose :is(h2,h3,h4){color:var(--navy);scroll-margin-top:calc(var(--hh) + 24px);line-height:1.3}
.prose h2{font-size:24px;font-weight:750;letter-spacing:-.02em;margin:46px 0 14px}
.prose h3{font-size:19px;font-weight:700;letter-spacing:-.01em;margin:32px 0 10px}
.prose h4{font-size:16.5px;font-weight:700;margin:24px 0 8px}
.anchor{margin-left:.4em;color:var(--ink-3);font-weight:500;opacity:0;transition:opacity .15s}
.prose :is(h2,h3,h4):hover .anchor,.anchor:focus-visible{opacity:1}
.prose p{margin:0 0 16px}
.prose :is(ul,ol){margin:0 0 20px;padding-left:26px}
.prose li{margin:7px 0;padding-left:2px}
.prose li > :is(ul,ol){margin:8px 0 4px}
.prose li > p{margin:8px 0}
.prose ul > li::marker{color:var(--blue-2)}
.prose ol{list-style:none;padding-left:0;counter-reset:step}
.prose ol > li{counter-increment:step;position:relative;padding-left:40px;min-height:28px}
.prose ol > li::before{content:counter(step);position:absolute;left:0;top:.12em;width:27px;height:27px;border-radius:50%;background:var(--blue-soft);color:var(--blue-ink);font:700 13.5px/27px 'Inter',system-ui,sans-serif;text-align:center}
.prose li ol > li{padding-left:34px}
.prose li ol > li::before{width:23px;height:23px;line-height:23px;font-size:12.5px}
.prose strong{font-weight:650;color:var(--ink)}
.prose a{text-decoration:underline;text-decoration-color:color-mix(in srgb,var(--blue-ink) 35%,transparent);text-underline-offset:3px}
.prose a:hover{text-decoration-color:currentColor}
.prose .anchor{text-decoration:none}
.prose code{font:500 .86em 'JetBrains Mono',ui-monospace,SFMono-Regular,Menlo,monospace;background:var(--bg-2);border:1px solid var(--line-2);border-radius:6px;padding:.12em .38em;overflow-wrap:anywhere}
.prose pre{margin:0 0 20px;background:var(--code-bg);color:var(--code-ink);border:1px solid var(--line-2);border-radius:12px;padding:16px 18px;overflow-x:auto;font-size:13.5px;line-height:1.6}
.prose pre code{background:none;border:0;padding:0;font-size:inherit;color:inherit;overflow-wrap:normal}
.prose kbd:not(.combo){display:inline-block;font:600 .78em/1.2 'JetBrains Mono',ui-monospace,monospace;padding:.2em .5em;border:1px solid var(--line);border-bottom-width:2px;border-radius:6px;background:var(--paper);color:var(--ink);vertical-align:.08em}
.prose kbd.combo{white-space:nowrap;font:inherit}
.prose kbd.combo kbd{margin:0 .12em}
.prose blockquote{margin:22px 0;padding:2px 0 2px 18px;border-left:3px solid var(--blue-3);color:var(--ink-2)}
.prose blockquote > :last-child{margin-bottom:0}
.prose hr{border:0;border-top:1px solid var(--line);margin:36px 0}
.prose del{color:var(--ink-3)}
.inline-img{display:inline-block;vertical-align:middle;max-height:1.6em;width:auto;border-radius:4px}

/* media */
.media{margin:26px 0}
.media picture{display:block}
.media img,.media video{width:100%;height:auto;border-radius:14px;border:1px solid var(--line);box-shadow:var(--shadow);background:var(--bg-2)}
.media figcaption{text-align:center;font-size:13.5px;line-height:1.5;color:var(--ink-3);margin-top:10px}
.media-frame{position:relative}
.js .media-frame :is(img,video){cursor:zoom-in}
.zoom-btn,.video-toggle{display:none;position:absolute;border:0;cursor:pointer;place-items:center;color:#fff;background:rgba(14,18,32,.66);opacity:0;transition:opacity .2s}
.js .zoom-btn,.js .video-toggle{display:grid}
.zoom-btn{top:10px;right:10px;width:36px;height:36px;border-radius:10px}
.zoom-btn svg{width:18px;height:18px}
.media-frame:hover .zoom-btn,.zoom-btn:focus-visible{opacity:1}
@media (hover:none){.zoom-btn{opacity:.85}}
.video-toggle{right:12px;bottom:12px;width:38px;height:38px;border-radius:50%}
.video-toggle svg{width:18px;height:18px;fill:currentColor;stroke:none}
.video-frame:hover .video-toggle,.video-toggle:focus-visible{opacity:1}
.video-toggle .i-play,.video.is-paused .video-toggle .i-pause{display:none}
.video.is-paused .video-toggle .i-play{display:inline}
.video.is-paused .video-toggle{opacity:1;right:50%;bottom:50%;transform:translate(50%,50%);width:64px;height:64px;background:rgba(14,18,32,.72);box-shadow:0 10px 30px -8px rgba(0,0,0,.5)}
.video.is-paused .video-toggle svg{width:26px;height:26px;margin-left:3px}

/* click-to-zoom lightbox (built by help.js) */
.zoom{position:fixed;inset:0;width:100vw;height:100vh;max-width:none;max-height:none;margin:0;padding:56px 20px 20px;border:0;background:transparent;color:#fff}
.zoom[open]{display:grid;place-items:center}
.zoom::backdrop{background:rgba(6,9,18,.88)}
.zoom-stage{display:grid;place-items:center;width:100%;height:100%;min-height:0}
.zoom-stage :is(img,video){max-width:min(100%,1920px);max-height:calc(100vh - 110px);width:auto;height:auto;border-radius:12px;box-shadow:0 30px 80px -20px rgba(0,0,0,.7);background:#0b0f1a}
.zoom-close{position:fixed;top:12px;right:12px;width:44px;height:44px;border-radius:12px;border:1px solid rgba(255,255,255,.18);background:rgba(255,255,255,.1);color:#fff;display:grid;place-items:center;cursor:pointer}
.zoom-close:hover{background:rgba(255,255,255,.18)}
.zoom-close svg{width:20px;height:20px}
.zoom-cap{position:fixed;left:0;right:0;bottom:10px;text-align:center;font-size:13.5px;color:rgba(255,255,255,.75);padding:0 70px}
.zoom-open{overflow:hidden}

/* callouts */
.callout{margin:24px 0;padding:14px 18px 14px;border-radius:14px;border:1px solid;font-size:15.5px;line-height:1.6}
.callout > :last-child{margin-bottom:0}
.callout p{margin:0 0 8px}
.callout-title{display:flex;align-items:center;gap:8px;font-weight:700}
.callout-icon{font-size:1.05em}
.callout-tip{background:var(--ok-soft);border-color:color-mix(in srgb,var(--ok) 30%,transparent)}
.callout-tip .callout-title{color:var(--ok-ink)}
.callout-note{background:var(--bg-2);border-color:var(--line)}
.callout-note .callout-title{color:var(--ink-2)}
.callout-warning{background:var(--warn-soft);border-color:color-mix(in srgb,var(--warn) 34%,transparent)}
.callout-warning .callout-title{color:var(--warn-ink)}
.callout-danger{background:var(--red-soft);border-color:color-mix(in srgb,var(--red) 34%,transparent)}
.callout-danger .callout-title{color:var(--red-ink)}

/* FAQ accordions (+++ Question … +++) */
.faq{border:1px solid var(--line);border-radius:14px;background:var(--paper);margin:10px 0;scroll-margin-top:calc(var(--hh) + 20px);transition:border-color .15s,box-shadow .15s}
.faq + .faq{margin-top:10px}
.faq[open]{border-color:color-mix(in srgb,var(--blue) 30%,var(--line));box-shadow:var(--shadow)}
.faq:target{border-color:var(--blue)}
.faq summary{list-style:none;cursor:pointer;display:flex;align-items:center;gap:12px;padding:14px 16px 14px 18px;font-weight:650;font-size:16px;line-height:1.4;color:var(--ink);border-radius:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary:hover{color:var(--blue-ink)}
.faq-q{flex:1}
.faq-chev{width:18px;height:18px;flex:none;color:var(--ink-3);transition:transform .2s}
.faq[open] .faq-chev{transform:rotate(180deg);color:var(--blue-ink)}
.faq-a{padding:0 18px 4px;border-top:1px solid var(--line-2);padding-top:14px;font-size:15.5px}
.faq-a > :last-child{margin-bottom:14px}

/* tables */
.table-wrap{margin:24px 0;overflow-x:auto;border:1px solid var(--line);border-radius:14px;background:var(--paper)}
.table-wrap table{width:100%;border-collapse:collapse;font-size:15px;line-height:1.5}
.table-wrap th{background:var(--bg-2);text-align:left;font-weight:650;font-size:13.5px;color:var(--ink-2);padding:10px 14px;white-space:nowrap}
.table-wrap td{padding:11px 14px;border-top:1px solid var(--line-2);vertical-align:top}
.table-wrap .ta-c{text-align:center} .table-wrap .ta-r{text-align:right}

/* ============ on this page ============ */
.toc{padding:30px 20px 0 0}
.toc-inner{position:sticky;top:calc(var(--hh) + 30px);max-height:calc(100vh - var(--hh) - 60px);overflow:auto}
.toc-title{font-size:11.5px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);margin-bottom:10px}
.toc ul,.toc-inline ul{list-style:none;border-left:1px solid var(--line)}
.toc a,.toc-inline a{display:block;padding:5px 0 5px 14px;margin-left:-1px;border-left:2px solid transparent;font-size:13.5px;line-height:1.4;color:var(--ink-2)}
.toc .toc-l3 a,.toc-inline .toc-l3 a{padding-left:26px;font-size:13px}
.toc a:hover,.toc-inline a:hover{color:var(--ink)}
.toc a.active{color:var(--blue-ink);border-left-color:var(--blue);font-weight:600}
.toc-inline{display:none;margin:-8px 0 28px;border:1px solid var(--line);border-radius:12px;background:var(--paper);padding:10px 16px}
.toc-inline summary{cursor:pointer;font-weight:600;font-size:14px;color:var(--ink-2)}
.toc-inline[open] summary{margin-bottom:8px}

/* ============ still stuck + pager ============ */
.still{display:flex;gap:14px;align-items:flex-start;margin-top:44px;padding:18px 20px;border-radius:var(--r);background:var(--paper);border:1px solid var(--line)}
.still-icon{width:40px;height:40px;border-radius:12px;background:var(--blue-soft);color:var(--blue-ink);display:grid;place-items:center;flex:none}
.still-icon svg{width:20px;height:20px}
.still p{font-size:14.5px;color:var(--ink-2)}
.still .still-title{font-weight:700;color:var(--ink);font-size:15.5px;margin-bottom:2px}
.pager{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:18px}
.pager a{display:flex;flex-direction:column;gap:4px;padding:14px 18px;border-radius:14px;border:1px solid var(--line);background:var(--paper);transition:border-color .15s,transform .15s}
.pager a:hover{border-color:var(--blue-3);transform:translateY(-1px)}
.pager-next{align-items:flex-end;text-align:right}
.pager-dir{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;color:var(--ink-3)}
.pager-dir svg{width:14px;height:14px}
.pager-title{font-weight:650;color:var(--ink);font-size:15px;line-height:1.35}

/* ============ category page ============ */
.cat-head{display:flex;gap:18px;align-items:flex-start;margin:4px 0 26px}
.cat-emoji{width:58px;height:58px;border-radius:16px;background:var(--paper);border:1px solid var(--line);box-shadow:var(--shadow);display:grid;place-items:center;font-size:28px;flex:none}
.cat-head .lede{margin-top:6px}
.cat-head .meta{margin-top:8px}
.article-list{list-style:none;display:grid;gap:10px}
.article-card{display:flex;gap:14px;align-items:center;padding:16px 18px;border-radius:14px;background:var(--paper);border:1px solid var(--line);color:var(--ink);transition:border-color .15s,box-shadow .15s,transform .15s}
.article-card:hover{border-color:var(--blue-3);box-shadow:var(--shadow);transform:translateY(-1px)}
.ac-emoji{width:38px;height:38px;border-radius:11px;background:var(--bg-2);display:grid;place-items:center;font-size:18px;flex:none}
.ac-body{min-width:0;flex:1}
.ac-title{display:block;font-weight:650;font-size:15.5px;line-height:1.35;color:var(--ink)}
.ac-sum{display:block;font-size:14px;line-height:1.5;color:var(--ink-2);margin-top:3px}
.ac-go{color:var(--ink-3);flex:none;display:flex}
.ac-go svg{width:18px;height:18px}
.article-card:hover .ac-go{color:var(--blue-ink)}

/* ============ home ============ */
.hero{position:relative;isolation:isolate;overflow:hidden;padding:64px 20px 44px;text-align:center}
.hero::before{content:"";position:absolute;inset:-30% -10% 0;z-index:-1;background:radial-gradient(38% 55% at 18% 30%,rgba(94,154,231,.22),transparent 70%),radial-gradient(34% 50% at 84% 18%,rgba(138,180,234,.28),transparent 70%)}
.hero::after{content:"";position:absolute;inset:0;z-index:-1;background-image:linear-gradient(rgba(14,18,32,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(14,18,32,.045) 1px,transparent 1px);background-size:56px 56px;-webkit-mask-image:radial-gradient(ellipse 70% 70% at 50% 0%,#000 30%,transparent 80%);mask-image:radial-gradient(ellipse 70% 70% at 50% 0%,#000 30%,transparent 80%)}
@media (prefers-color-scheme:dark){.hero::after{background-image:linear-gradient(rgba(255,255,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.04) 1px,transparent 1px)}}
.hero-inner{max-width:760px;margin:0 auto}
.eyebrow{display:inline-flex;align-items:center;gap:8px;padding:6px 12px 6px 10px;border:1px solid var(--line);background:var(--paper);border-radius:999px;font-size:12.5px;font-weight:600;color:var(--ink-2);box-shadow:var(--shadow)}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 3px rgba(31,138,91,.15)}
.hero h1{font-size:clamp(34px,5.4vw,56px);line-height:1.05;letter-spacing:-.035em;font-weight:800;color:var(--navy);margin:20px 0 14px}
.hl{position:relative;display:inline-block;color:var(--blue);isolation:isolate}
.hl::after{content:"";position:absolute;left:0;right:0;bottom:.06em;height:.16em;background:var(--blue-soft);z-index:-1;border-radius:4px}
@media (prefers-color-scheme:dark){.hl{color:var(--blue-2)}}
.hero .lede{margin:0 auto;font-size:clamp(16.5px,2vw,19px)}
.search-hero{max-width:640px;margin:28px auto 0}
.search-hero input{height:56px;border-radius:16px;font-size:16.5px;padding-left:50px;box-shadow:var(--shadow)}
.search-hero .search-icon{left:18px}
.search-hero .search-icon svg{width:21px;height:21px}
.search-hero .search-kbd{right:16px}
.hero-pop{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:8px;margin-top:18px;font-size:13.5px;color:var(--ink-3)}
.hero-pop a{padding:5px 12px;border-radius:999px;border:1px solid var(--line);background:var(--paper);color:var(--ink-2);font-weight:500}
.hero-pop a:hover{color:var(--blue-ink);border-color:var(--blue-3)}
.home-block{max-width:1180px;margin:0 auto;padding:22px 24px 26px}
.home-block h2{font-size:22px;font-weight:750;letter-spacing:-.02em;color:var(--navy);margin-bottom:16px}
.cat-grid{list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:14px}
.cat-card{display:flex;flex-direction:column;height:100%;padding:20px;border-radius:var(--r);background:var(--paper);border:1px solid var(--line);color:var(--ink);transition:border-color .15s,box-shadow .15s,transform .15s}
a.cat-card:hover{border-color:var(--blue-3);box-shadow:var(--shadow);transform:translateY(-2px)}
.cc-emoji{width:46px;height:46px;border-radius:13px;background:var(--blue-soft);display:grid;place-items:center;font-size:23px;margin-bottom:14px}
.cat-card h3{font-size:17px;font-weight:700;letter-spacing:-.01em;line-height:1.3}
.cat-card p{font-size:14px;line-height:1.5;color:var(--ink-2);margin:6px 0 14px;flex:1}
.cc-count{align-self:flex-start;font-size:12.5px;font-weight:600;color:var(--blue-ink);background:var(--blue-soft);border-radius:999px;padding:3px 10px}
.cat-card.is-empty{background:transparent;border-style:dashed}
.cat-card.is-empty .cc-emoji{background:var(--bg-2)}
.cat-card.is-empty .cc-count{background:var(--bg-2);color:var(--ink-2)}
.popular-list{grid-template-columns:repeat(auto-fill,minmax(330px,1fr))}
.home-block .still{margin-top:8px}

/* ============ footer ============ */
.hc-footer{border-top:1px solid var(--line-2);margin-top:auto}
.hc-foot{max-width:var(--maxw);margin:0 auto;padding:26px 24px 34px;display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px 24px;font-size:13.5px;color:var(--ink-3)}
.brand-sm{font-size:16px}
.brand-sm .mark{width:26px;height:22px}
.foot-links{display:flex;flex-wrap:wrap;gap:8px 20px}
.foot-links a{color:var(--ink-2)}
.foot-links a:hover{color:var(--ink)}

/* ============ responsive ============ */
@media (min-width:1200px){.toc-inline{display:none!important}}
@media (max-width:1199px){
  .layout.has-toc{grid-template-columns:260px minmax(0,1fr)}
  .toc{display:none}
  .has-toc .toc-inline{display:block}
  .main{padding:28px 36px 64px}
}
@media (max-width:899px){
  .layout,.layout.has-toc{display:flex;flex-direction:column}
  .main{padding:22px 20px 56px}
  .nav-toggle{display:grid}
  .sidebar{position:fixed;top:0;left:0;bottom:0;height:auto;width:min(320px,86vw);z-index:80;background:var(--paper);border-right:1px solid var(--line);box-shadow:var(--shadow-lg);padding:0 14px 40px 18px;transform:translateX(-102%);visibility:hidden;transition:transform .25s ease,visibility 0s linear .25s}
  .nav-open .sidebar{transform:none;visibility:visible;transition:transform .25s ease}
  .sidebar-head{display:flex;align-items:center;justify-content:space-between;position:sticky;top:0;background:var(--paper);padding:14px 0 12px;margin-bottom:6px;font-weight:700;font-size:15px;z-index:1}
  .sidebar-head .icon-btn{display:grid}
  .scrim{display:block;position:fixed;inset:0;z-index:75;background:rgba(8,12,24,.46)}
  .scrim[hidden]{display:none}
  .nav-open{overflow:hidden}
  html:not(.js) .sidebar{position:static;order:2;transform:none;visibility:visible;width:auto;box-shadow:none;border:0;border-top:1px solid var(--line)}
  html:not(.js) .sidebar-head{display:none}
}
@media (max-width:759px){
  .hc-bar{padding:0 12px;gap:10px}
  .search-header{display:none}
  .search-toggle{display:grid}
  .searching .search-header{display:block;position:absolute;left:0;right:0;top:100%;max-width:none;margin:0;padding:10px 12px 12px;background:var(--bg);border-bottom:1px solid var(--line)}
  .search-pop{min-width:0}
  .search-kbd{display:none}
  .dl{padding:0;width:40px;height:40px;justify-content:center;border-radius:11px}
  .dl-text{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  .hc-label{padding-left:10px;font-size:14.5px}
  .pager{grid-template-columns:1fr}
  .pager-next{align-items:flex-start;text-align:left}
  .hero{padding:44px 16px 30px}
  .search-hero input{height:52px;font-size:16px}
  .home-block{padding:16px 16px 20px}
  .popular-list{grid-template-columns:1fr}
  .cat-grid{grid-template-columns:1fr 1fr;gap:10px}
  .cat-card{padding:16px}
  .cat-card p{display:none}
  .cat-card h3{font-size:15.5px;margin-bottom:10px}
  .cc-emoji{width:40px;height:40px;font-size:20px;margin-bottom:12px}
  .article-head h1,.cat-head h1{font-size:28px}
  .lede{font-size:16.5px}
  .prose{font-size:16px}
  .prose h2{font-size:21px;margin-top:38px}
  .cat-emoji{width:48px;height:48px;font-size:24px;border-radius:14px}
  .hc-foot{padding:22px 16px 30px}
}
@media (max-width:479px){
  .brand .wordmark{display:none}
  .hc-label{border-left:0;padding-left:0}
}
@media (hover:none){.search-kbd{display:none}}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{transition:none!important;animation:none!important}
}