/* ═══════════════════════════════════════════════════════════
   edBuddy Pro — resources.css
   Resources hub, guides, prompt library, webinars, blog,
   certificate verification, free lessons and About.
   Mobile first; the desktop layout starts at 900px.
   ═══════════════════════════════════════════════════════════ */

:root {
  --font: 'Figtree', -apple-system, sans-serif;
  --font-display: 'Figtree', -apple-system, sans-serif;
  --blue: #0559B3;
  --navy: #06213D;
  --ink: #0B1220;
  --muted: #55657A;
  --line: #E3E8EF;
  --tint: #F4F7FB;
  --nav-h: 64px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 96px; }
body { margin: 0; font-family: var(--font); color: var(--ink); background: #fff;
  -webkit-font-smoothing: antialiased; padding-bottom: 60px; overflow-x: clip; }
img { max-width: 100%; display: block; }
a { color: var(--blue); }
.rs-wrap { max-width: 1180px; margin: 0 auto; padding: 0 20px; }
.rs-narrow { max-width: 760px; margin: 0 auto; padding: 0 20px; }

/* ── page header ── */
.rs-hero { padding: 36px 0 40px; border-bottom: 1px solid var(--line); }
.rs-crumbs { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 22px; padding: 0; list-style: none;
  font-size: 13.5px; color: var(--muted); }
.rs-crumbs li + li::before { content: "/"; margin-right: 6px; color: #A9B4C2; }
.rs-crumbs a { color: var(--muted); text-decoration: none; }
.rs-crumbs a:hover { color: var(--blue); }
.rs-kicker { margin: 0 0 14px; font-size: 13px; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: var(--blue); }
.rs-h1 { margin: 0; max-width: 18ch; font: 800 clamp(38px, 9.5vw, 72px)/1 var(--font-display);
  letter-spacing: -.035em; color: var(--navy); }
.rs-lead { margin: 20px 0 0; max-width: 58ch; font-size: clamp(17px, 4.4vw, 20px); line-height: 1.55; color: #33435A; }
.rs-meta { display: flex; flex-wrap: wrap; gap: 6px 18px; margin: 22px 0 0; font-size: 14px; color: var(--muted); }
.rs-meta b { color: var(--ink); font-weight: 600; }

.rs-sec { padding: 48px 0; }
.rs-sec.tint { background: var(--tint); }
.rs-h2 { margin: 0 0 8px; font: 800 clamp(26px, 6vw, 38px)/1.1 var(--font-display); letter-spacing: -.025em; color: var(--navy); }
.rs-sub { margin: 0 0 28px; max-width: 60ch; font-size: 16px; line-height: 1.6; color: var(--muted); }

/* ── cards (hub, guide index, blog index) ── */
.rs-cards { display: grid; gap: 16px; }
.rs-card { display: flex; flex-direction: column; gap: 10px; padding: 24px; min-height: 100%;
  border: 1px solid var(--line); border-radius: 10px; background: #fff; color: inherit; text-decoration: none;
  transition: border-color .2s; }
.rs-card:hover { border-color: var(--blue); }
.rs-card:hover .rs-card-t { color: var(--blue); }
.rs-card-k { font-size: 12.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); }
.rs-card-t { margin: 0; font: 800 21px/1.25 var(--font-display); letter-spacing: -.015em; color: var(--ink); transition: color .2s; }
.rs-card-d { margin: 0; font-size: 15px; line-height: 1.55; color: var(--muted); }
.rs-card-m { margin-top: auto; padding-top: 8px; font-size: 13.5px; font-weight: 600; color: var(--ink); }
.rs-card-m::after { content: " \2192"; color: var(--blue); }
.rs-card-img { margin: -24px -24px 6px; aspect-ratio: 16 / 9; overflow: hidden; border-radius: 9px 9px 0 0; background: var(--tint); }
.rs-card-img img { width: 100%; height: 100%; object-fit: cover; }

/* ── article prose (guides, blog posts, lessons) ── */
.rs-prose { padding-top: 40px; padding-bottom: 24px; font-size: 17px; line-height: 1.72; color: #26344A; }
.rs-prose > :first-child { margin-top: 0; }
.rs-prose h2 { margin: 48px 0 14px; font: 800 clamp(24px, 5.4vw, 30px)/1.2 var(--font-display);
  letter-spacing: -.02em; color: var(--navy); scroll-margin-top: 96px; }
.rs-prose h3 { margin: 32px 0 10px; font: 700 20px/1.3 var(--font-display); color: var(--ink); }
.rs-prose p { margin: 0 0 18px; }
.rs-prose ul, .rs-prose ol { margin: 0 0 20px; padding-left: 22px; }
.rs-prose li { margin: 0 0 8px; padding-left: 4px; }
.rs-prose li::marker { color: var(--blue); }
.rs-prose strong { color: var(--ink); }
.rs-prose hr { border: 0; border-top: 1px solid var(--line); margin: 40px 0; }

.rs-callout { margin: 26px 0; padding: 18px 20px; border-left: 3px solid var(--blue); background: var(--tint);
  border-radius: 0 8px 8px 0; font-size: 16px; line-height: 1.6; }
.rs-callout b { display: block; margin-bottom: 4px; color: var(--navy); }
.rs-callout.warn { border-left-color: #B4532A; background: #FBF4EF; }
.rs-callout p:last-child { margin-bottom: 0; }

/* a prompt you can copy */
.rs-prompt { position: relative; margin: 22px 0 26px; border: 1px solid #D5DEEA; border-radius: 10px; background: #FBFCFE; }
.rs-prompt-h { display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 12px 10px 16px; border-bottom: 1px solid #E3E8EF; font-size: 13px; font-weight: 700;
  letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.rs-prompt pre { margin: 0; padding: 16px; white-space: pre-wrap; word-break: break-word;
  font: 500 15px/1.65 var(--font); color: var(--ink); }
.rs-copy { display: inline-flex; align-items: center; gap: 6px; min-height: 36px; padding: 0 14px;
  font: 700 13px var(--font); letter-spacing: 0; text-transform: none; color: var(--blue); cursor: pointer;
  background: #fff; border: 1px solid #C9D3E0; border-radius: 6px; }
.rs-copy:hover { border-color: var(--blue); }
.rs-copy.done { color: #0E7A4F; border-color: #0E7A4F; }

/* before / after */
.rs-compare { display: grid; gap: 12px; margin: 22px 0 26px; }
.rs-compare > div { padding: 16px 18px; border-radius: 10px; border: 1px solid var(--line); font-size: 15.5px; line-height: 1.6; }
.rs-compare small { display: block; margin-bottom: 6px; font-size: 12.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; }
.rs-compare .bad small { color: #A2462A; }
.rs-compare .good { border-color: #B9D3F0; background: #F5F9FE; }
.rs-compare .good small { color: var(--blue); }

/* checklist */
.rs-check { list-style: none; padding: 0 !important; margin: 0 0 22px; border-top: 1px solid var(--line); }
.rs-check li { position: relative; margin: 0; padding: 14px 0 14px 30px; border-bottom: 1px solid var(--line); }
.rs-check li::before { content: ""; position: absolute; left: 2px; top: 22px; width: 10px; height: 10px; background: var(--blue); border-radius: 2px; }

/* table */
.rs-table { width: 100%; margin: 20px 0 26px; border-collapse: collapse; font-size: 15px; line-height: 1.5; }
.rs-table-wrap { overflow-x: auto; margin: 20px 0 26px; }
.rs-table-wrap .rs-table { margin: 0; min-width: 520px; }
.rs-table th, .rs-table td { padding: 12px 14px 12px 0; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
.rs-table th { font-size: 13px; font-weight: 700; letter-spacing: .04em; text-transform: uppercase; color: var(--muted); }

/* end-of-article call to action */
.rs-end { margin: 40px 0 56px; padding: 28px 24px; border-radius: 12px; background: var(--navy); color: #fff; }
.rs-end h2 { margin: 0 0 8px; font: 800 clamp(22px, 5vw, 28px)/1.2 var(--font-display); letter-spacing: -.02em; color: #fff; }
.rs-end p { margin: 0 0 20px; font-size: 16px; line-height: 1.6; color: #C9D6E6; }
.rs-btns { display: flex; flex-wrap: wrap; gap: 10px; }
.rs-btn { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 22px;
  font: 700 15px var(--font); text-decoration: none; border-radius: 8px; cursor: pointer; border: 0;
  background: var(--blue); color: #fff; }
.rs-btn:hover { background: #044A96; }
.rs-end .rs-btn { background: #fff; color: var(--navy); }
.rs-end .rs-btn:hover { background: #E7EEF7; }
.rs-btn.ghost { background: transparent; color: var(--blue); box-shadow: inset 0 0 0 1px #C9D3E0; }
.rs-btn.ghost:hover { box-shadow: inset 0 0 0 1px var(--blue); background: transparent; }
.rs-end .rs-btn.ghost { color: #fff; box-shadow: inset 0 0 0 1px rgba(255,255,255,.4); }
.rs-end .rs-btn.ghost:hover { box-shadow: inset 0 0 0 1px #fff; background: transparent; }

/* related links under an article */
.rs-related { padding: 0 0 56px; }
.rs-related h2 { margin: 0 0 16px; font: 700 15px var(--font-display); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }

/* ── forms (webinars, verify) ── */
.rs-form { max-width: 520px; }
.rs-field { margin: 0 0 16px; }
.rs-field label { display: block; margin-bottom: 7px; font-size: 14px; font-weight: 600; color: var(--ink); }
.rs-field input, .rs-field select { width: 100%; height: 50px; padding: 0 16px; font: 500 16px var(--font); color: var(--ink);
  border: 1px solid #C9D3E0; border-radius: 8px; background: #fff; }
.rs-field input:focus, .rs-field select:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(5, 89, 179, .18); }
.rs-hint { margin: 6px 0 0; font-size: 13px; color: var(--muted); }
.rs-fine { margin: 12px 0 0; font-size: 13px; line-height: 1.5; color: var(--muted); }
.rs-fine a { color: inherit; }
.rs-form .rs-btn { width: 100%; }

/* two-column page body (form + explainer) */
.rs-split { display: grid; gap: 40px; }
.rs-panel { padding: 24px; border: 1px solid var(--line); border-radius: 12px; background: #fff; }
.rs-steps { counter-reset: s; list-style: none; margin: 0; padding: 0; }
.rs-steps li { counter-increment: s; position: relative; padding: 0 0 22px 46px; font-size: 16px; line-height: 1.55; color: #33435A; }
.rs-steps li::before { content: counter(s); position: absolute; left: 0; top: -2px; width: 30px; height: 30px;
  display: grid; place-items: center; border-radius: 50%; background: var(--tint); color: var(--blue);
  font-weight: 800; font-size: 14px; }
.rs-steps b { display: block; color: var(--ink); }

/* topic list (webinars) */
.rs-topics { list-style: none; margin: 0; padding: 0; border-top: 1px solid #D5DEEA; }
.rs-topics li { display: grid; gap: 6px; padding: 20px 0; border-bottom: 1px solid #D5DEEA; }
.rs-topics b { font: 700 clamp(19px, 4.8vw, 23px)/1.3 var(--font-display); letter-spacing: -.01em; color: var(--ink); }
.rs-topics span { font-size: 15px; line-height: 1.55; color: var(--muted); }
.rs-topics em { font-style: normal; font-size: 13px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--blue); }

/* ── prompt library ── */
.pl-bar { position: sticky; top: var(--nav-h); z-index: 5; padding: 14px 0; background: rgba(255,255,255,.96);
  border-bottom: 1px solid var(--line); backdrop-filter: blur(6px); }
.pl-bar .rs-wrap { display: grid; gap: 12px; }
.pl-search { width: 100%; height: 46px; padding: 0 16px; font: 500 16px var(--font); color: var(--ink);
  border: 1px solid #C9D3E0; border-radius: 8px; }
.pl-search:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 3px rgba(5, 89, 179, .18); }
.pl-chips { display: flex; gap: 8px; overflow-x: auto; scrollbar-width: none; margin: 0 -20px; padding: 0 20px; }
.pl-chips::-webkit-scrollbar { display: none; }
.pl-chip { flex: none; min-height: 40px; padding: 0 16px; font: 600 14px var(--font); color: #33435A; cursor: pointer;
  background: #fff; border: 1px solid #D5DEEA; border-radius: 999px; }
.pl-chip:hover { border-color: var(--blue); color: var(--blue); }
.pl-chip[aria-pressed="true"] { background: var(--navy); border-color: var(--navy); color: #fff; }
.pl-list { display: grid; gap: 16px; padding: 28px 0 8px; }
.pl-item { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.pl-item[hidden] { display: none; }
.pl-top { padding: 18px 18px 0; }
.pl-role { font-size: 12.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); }
.pl-item h3 { margin: 6px 0 6px; font: 700 18px/1.3 var(--font-display); color: var(--ink); }
.pl-use { margin: 0; font-size: 14.5px; line-height: 1.5; color: var(--muted); }
.pl-item pre { flex: 1; margin: 14px 18px 0; padding: 14px; white-space: pre-wrap; word-break: break-word;
  font: 500 14.5px/1.6 var(--font); color: #26344A; background: var(--tint); border-radius: 8px; }
.pl-foot { display: flex; justify-content: flex-end; padding: 12px 18px 18px; }
.pl-empty { padding: 40px 0; text-align: center; color: var(--muted); }
.pl-count { font-size: 14px; color: var(--muted); }

/* ── free lessons ── */
.ls-nav { display: flex; gap: 8px; overflow-x: auto; margin: 0 -20px; padding: 0 20px 2px; scrollbar-width: none; }
.ls-nav::-webkit-scrollbar { display: none; }
.ls-nav a { flex: none; display: grid; gap: 2px; padding: 12px 16px; border: 1px solid var(--line); border-radius: 10px;
  text-decoration: none; color: var(--ink); background: #fff; }
.ls-nav a:hover { border-color: var(--blue); }
.ls-nav small { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); }
.ls-nav span { font-size: 15px; font-weight: 600; }
.ls-lesson { padding-top: 8px; }
.ls-lesson + .ls-lesson { border-top: 1px solid var(--line); margin-top: 24px; padding-top: 32px; }
.ls-head { display: grid; gap: 6px; margin-bottom: 18px; }
.ls-head small { font-size: 13px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); }
.ls-head h2 { margin: 0 !important; }
.ls-head p { margin: 0; font-size: 14.5px; color: var(--muted); }
.ls-lab { margin: 28px 0 10px; padding: 22px 20px; border-radius: 12px; border: 1px solid #B9D3F0; background: #F5F9FE; }
.ls-lab > small { display: block; margin-bottom: 6px; font-size: 12.5px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); }
.ls-lab h3 { margin: 0 0 10px !important; }
.ls-lab ol { margin-bottom: 0; }

/* ── about ── */
.ab-hero { display: grid; gap: 32px; }
.ab-shot { margin: 0; border-radius: 12px; overflow: hidden; aspect-ratio: 4 / 3; background: var(--tint); }
.ab-shot img { width: 100%; height: 100%; object-fit: cover; }
.ab-principles { display: grid; gap: 0; border-top: 1px solid #D5DEEA; }
.ab-principles > div { padding: 22px 0; border-bottom: 1px solid #D5DEEA; }
.ab-principles h3 { margin: 0 0 6px; font: 800 clamp(20px, 5vw, 24px)/1.25 var(--font-display); letter-spacing: -.015em; color: var(--ink); }
.ab-principles p { margin: 0; font-size: 16px; line-height: 1.6; color: var(--muted); }
.ab-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 22px 18px; }
.ab-facts b { display: block; font: 800 clamp(26px, 6vw, 34px)/1 var(--font-display); color: var(--navy); letter-spacing: -.02em; }
.ab-facts span { display: block; margin-top: 6px; font-size: 14px; line-height: 1.45; color: var(--muted); }

@media (min-width: 640px) {
  .rs-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rs-compare { grid-template-columns: 1fr 1fr; }
  .rs-end { padding: 36px 36px; }
  .pl-list { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rs-form .rs-btn { width: auto; }
}
@media (min-width: 900px) {
  .rs-wrap, .rs-narrow { padding: 0 32px; }
  .rs-hero { padding: 56px 0 56px; }
  .rs-sec { padding: 80px 0; }
  .rs-cards.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .rs-prose { padding-top: 56px; font-size: 18px; }
  .rs-split { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 72px; align-items: start; }
  .pl-bar .rs-wrap { grid-template-columns: 340px 1fr; align-items: center; }
  .pl-chips { margin: 0; padding: 0; flex-wrap: wrap; }
  .pl-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .ab-hero { grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); gap: 64px; align-items: center; }
  .ab-two { display: grid; grid-template-columns: 1fr 1.4fr; gap: 64px; align-items: start; }
  .ab-principles { border-top: 0; }
  .ab-principles > div:first-child { padding-top: 0; }
  .ls-nav { margin: 0; padding: 0; }
}
.pl-count { margin: 24px 0 0; }
.rs-end.flush { margin: 0; }
.rs-hero .ls-nav { margin-top: 28px; }
.rs-prose.flat { padding: 0; }
.rs-btns.spaced { margin-top: 32px; }

/* ── search ── */
.sr-form { margin-top: 26px; }
.sr-label { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.sr-box { display: flex; align-items: center; gap: 12px; height: 58px; padding: 0 18px; border: 1.5px solid #0a0a0a;
  border-radius: 10px; background: #fff; color: var(--muted); }
.sr-box:focus-within { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(5, 89, 179, .16); }
.sr-box svg { width: 20px; height: 20px; flex: none; stroke: currentColor; fill: none; stroke-width: 2; stroke-linecap: round; }
.sr-box input { flex: 1; min-width: 0; border: 0; outline: none; background: none; font: 500 18px var(--font); color: var(--ink); }
.sr-body { padding-top: 28px; padding-bottom: 56px; }
.sr-status { margin: 0 0 16px; font-size: 15px; color: var(--muted); }
.sr-results { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--line); }
.sr-results:empty { border-top: 0; }
.sr-hit { display: grid; gap: 4px; padding: 18px 4px; border-bottom: 1px solid var(--line); text-decoration: none; color: inherit; }
.sr-hit:hover .sr-t { color: var(--blue); }
.sr-sec { font-size: 12px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--blue); }
.sr-t { font: 700 19px/1.3 var(--font-display); color: var(--ink); transition: color .2s; }
.sr-x { font-size: 15px; line-height: 1.55; color: var(--muted); }
.sr-x mark { background: #FFF1B8; color: var(--ink); border-radius: 2px; padding: 0 1px; }
.sr-browse { margin: 40px 0 14px; font: 700 14px var(--font-display); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.sr-pop { display: flex; flex-wrap: wrap; gap: 10px; list-style: none; margin: 0; padding: 0; }
.sr-pop a { display: inline-flex; align-items: center; min-height: 40px; padding: 0 16px; border: 1px solid #D5DEEA;
  border-radius: 999px; font-size: 14.5px; font-weight: 600; color: #33435A; text-decoration: none; }
.sr-pop a:hover { border-color: var(--blue); color: var(--blue); }
.sr-steps { margin-top: 28px; }