/* Help center — layout math mirrors Intercom's help center (960px rail,
   3×304px collection grid, 640px article column); colors, type and shell
   come from design-system/site.css. See docs/DESIGN_SYSTEM.md → Help center. */

:root { --help-rail: 960px; --help-line: #dcdee5; }

/* ---- global nav (same as free-tools pages) ---- */
nav.site-nav{position:sticky;top:0;z-index:70;padding:0 22px;background:transparent}
.nav-surface{position:relative;z-index:2;width:min(calc(100vw - (var(--grid-gutter) * 2)),var(--grid-long));margin:0 auto;border-radius:var(--r-lg);background:transparent;box-shadow:none;transition:background .2s,box-shadow .2s}
.site-nav.is-scrolled .nav-surface{background:#fff;box-shadow:0 14px 38px -30px rgba(8,9,12,.45)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:64px;gap:22px;border-radius:inherit;background:transparent}
.site-nav.is-scrolled .nav-in{background:#fff}
.logo{display:flex;align-items:center;gap:9px;flex:none;color:var(--ink)}
.logo img{display:block;width:107px;height:31px}
.nav-links{display:flex;align-items:center;gap:6px;margin-right:auto;margin-left:4px;font-size:var(--type-small-size);font-weight:500;line-height:var(--type-small-line)}
.nav-links a{padding:7px 12px;border-radius:9px;color:var(--gray)}
.nav-links a:hover{background:rgba(255,255,255,.6);color:var(--ink)}
.nav-actions{display:flex;align-items:center;gap:9px;flex-shrink:0}
.nav-signin{padding:8px 17px;border-radius:10px;color:var(--ink);font-size:var(--type-small-size);font-weight:500;line-height:20px;white-space:nowrap}
.nav-signin:hover{background:rgba(255,255,255,.6)}
.nav-cta{white-space:nowrap}

/* ---- rail ---- */
.help-rail{width:min(calc(100% - (var(--grid-gutter) * 2)),var(--help-rail));margin-inline:auto}
.help-main{padding:24px 0 96px}

/* ---- hero: the landing search image sits behind the transparent nav ---- */
.help-hero{margin-top:-64px;padding:110px 0 71px;background:#bfe4f5 url("/assets/hero-search-bg.jpg") 50% 30%/cover no-repeat}
.help-hero.is-home{padding:242px 0 72px}
.help-welcome{margin:0 0 24px;font-size:28px;font-weight:600;line-height:36px;letter-spacing:var(--tracking-tight)}
.help-search{position:relative}
.help-search i{position:absolute;z-index:1;left:16px;top:50%;transform:translateY(-50%);font-size:20px;color:var(--ink);pointer-events:none}
.help-search input{box-sizing:border-box;width:100%;padding:16px 16px 16px 48px;border:1px solid rgba(0,0,0,.08);border-radius:10px;outline:0;background:rgba(255,255,255,.2);color:var(--ink);font:inherit;font-size:var(--type-body-lg-size);line-height:var(--type-body-lg-line);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);transition:background .2s,border-color .2s}
.help-search input::placeholder{color:var(--ink);opacity:.7}
.help-search input:focus{background:#fff;border-color:var(--ink)}

/* ---- home: collection grid ---- */
.help-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.help-card{display:flex;align-items:center;gap:16px;min-height:94px;box-sizing:border-box;padding:16px 24px;border:1px solid var(--help-line);border-radius:8px;background:#fff;color:var(--ink);transition:border-color .2s}
.help-card:hover{border-color:var(--ink)}
.help-card-icon{display:grid;place-items:center;flex:none;width:60px;height:60px;border-radius:8px;background:var(--paper);font-size:28px}
.help-card-text{display:grid;gap:2px;min-width:0}
.help-card-title{font-weight:600;line-height:24px}
.help-card-meta,.help-byline,.help-row-sub,.help-muted,.help-crumbs{color:var(--gray);font-size:var(--type-meta-size);line-height:var(--type-meta-line)}
.dot{display:inline-block;width:3px;height:3px;margin:0 8px;border-radius:50%;background:currentColor;vertical-align:middle}

/* ---- breadcrumb ---- */
.help-crumbs{display:flex;flex-wrap:wrap;align-items:center;gap:0 4px;padding-bottom:16px;color:var(--ink)}
.help-crumbs a:hover{color:var(--gray)}
.help-crumbs i{color:var(--gray-2);font-size:16px}
.help-crumbs [aria-current]{color:var(--gray)}

/* ---- collection ---- */
.help-head{margin:24px 0 40px}
.help-head-icon{display:block;margin-bottom:28px;font-size:40px;line-height:40px}
.help-head h1,.help-title h1{margin:0 0 4px;font-size:32px;font-weight:600;line-height:40px;letter-spacing:var(--tracking-tight)}
.help-desc{margin:0;color:var(--ink);line-height:24px}
.help-byline{display:flex;align-items:center;margin:20px 0 0}
.help-avatars{display:flex;margin-right:8px}
.help-avatars .help-avatar+.help-avatar{margin-left:-6px}
.help-avatar{display:inline-grid;place-items:center;flex:none;width:24px;height:24px;border:2px solid #fff;border-radius:50%;background:var(--ink);color:#fff;font-size:12px;font-weight:600;object-fit:cover;box-sizing:content-box}
.help-sections{display:grid;gap:20px}
.help-box{padding:12px;border:1px solid var(--help-line);border-radius:8px;background:#fff}
.help-box ul{margin:0;padding:0;list-style:none}
.help-box-title{margin:0 0 12px;padding:12px;font-size:22px;font-weight:600;line-height:28px;letter-spacing:var(--tracking-tight)}
.help-box-title a:hover{color:var(--gray)}
.help-row{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:12px;border-radius:6px;color:var(--ink);transition:background .25s}
.help-row>span{display:grid;gap:4px;min-width:0}
.help-row i{flex:none;font-size:16px}
.help-row:hover{background:var(--paper)}

/* ---- article ---- */
.help-article-layout{display:grid;grid-template-columns:640px minmax(0,1fr);gap:64px;margin-top:24px}
.help-article{min-width:0}
.help-author{display:flex;align-items:center;gap:12px;margin:24px 0 36px;font-size:var(--type-meta-size);line-height:var(--type-meta-line)}
.help-author .help-avatar{width:32px;height:32px;border:0;font-size:14px}
.help-author>span{display:grid}
.help-body{line-height:var(--type-body-line)}
.help-body p{margin:0 0 16px}
.help-body h2{margin:32px 0 16px;font-size:20px;font-weight:600;line-height:26px;scroll-margin-top:88px}
.help-body h3{margin:24px 0 12px;font-size:18px;font-weight:600;line-height:24px;scroll-margin-top:88px}
.help-body ul,.help-body ol{margin:16px 0;padding-left:16px}
.help-body li{margin-bottom:4px;padding-left:4px}
.help-body a{text-decoration:underline;text-underline-offset:2px}
.help-body img{display:block;max-width:100%;height:auto;margin:0 0 16px}
.help-body hr{height:3px;margin:16px 0;border:0;border-radius:3px;background:var(--line)}
.help-body code{padding:1px 5px;border-radius:4px;background:var(--paper);font-size:14px}
.help-body pre{overflow:auto;padding:16px;border-radius:8px;background:var(--paper)}
.help-body pre code{padding:0}
.help-body table{width:100%;margin:16px 0;border-collapse:collapse;font-size:var(--type-meta-size)}
.help-body th,.help-body td{padding:8px 12px;border:1px solid var(--line);text-align:left}
.help-body blockquote{margin:16px 0;padding-left:16px;border-left:3px solid var(--line)}
.callout{margin:16px 0;padding:16px 20px 20px;border-radius:8px;background:var(--paper)}
.callout>:last-child{margin-bottom:0}
.callout h3{margin-top:0}
.help-related{margin-top:32px}
.help-related h2{margin:0 0 12px;font-size:18px;font-weight:600;line-height:24px}
.help-reaction{margin:32px 0 0;padding:12px;border:0;border-radius:8px;background:var(--paper);color:var(--gray);text-align:center}
.help-reaction legend{float:left;width:100%;padding:9px 0 4px}
.help-reaction div{clear:both;display:flex;justify-content:center}
.help-reaction button{display:grid;place-items:center;width:50px;height:55px;padding:0;border:0;background:none;color:var(--gray);font-size:32px;cursor:pointer;transition:transform .15s,color .15s}
.help-reaction button:hover{color:var(--ink);transform:scale(1.15)}
.help-reaction [data-thanks]{clear:both;margin:8px 0}
.help-toc{position:sticky;top:96px;align-self:start;max-height:calc(100vh - 120px);overflow:auto}
.help-toc ul{margin:0;padding:0;list-style:none}
.help-toc a{display:block;padding:6px 16px;border-left:2px solid var(--line);color:var(--gray);font-size:var(--type-meta-size);line-height:21px}
.help-toc .d3 a{padding-left:28px}
.help-toc a:hover,.help-toc a.is-active{color:var(--ink)}
.help-toc a.is-active{border-color:var(--ink)}

/* ---- responsive ---- */
@media(max-width:1100px){
  .help-article-layout{grid-template-columns:minmax(0,640px)}
  .help-toc{display:none}
}
@media(max-width:900px){
  nav.site-nav{padding:0}
  .nav-surface{width:100%;border-radius:0}
  .site-nav.is-scrolled .nav-surface{box-shadow:0 1px 0 var(--line)}
  .nav-links{display:none}
  .help-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
}
@media(max-width:600px){
  .help-hero{padding:88px 0 40px}
  .help-hero.is-home{padding:152px 0 48px}
  .help-grid{grid-template-columns:1fr}
  .help-head{margin-bottom:32px}
  .help-main{padding-bottom:64px}
  .nav-signin{display:none}
}
@media(prefers-reduced-motion:reduce){
  .help-card,.help-row,.help-reaction button,.help-search input{transition:none}
}