/* ==========================================================================
   Seller Digest — Design System
   Clean editorial / modern docs aesthetic (Stripe Docs / Linear Help style)
   ========================================================================== */

:root {
  /* Color tokens — light (default) */
  --color-bg: #ffffff;
  --color-bg-subtle: #f7f8fa;
  --color-bg-inset: #f1f3f6;
  --color-border: #e3e6ea;
  --color-border-strong: #cdd2d9;
  --color-text: #1a1d23;
  --color-text-muted: #5b6270;
  --color-text-faint: #8790a0;
  --color-accent: #205b4f;
  --color-accent-strong: #163f37;
  --color-accent-bg: #e8f2ee;
  --color-link: #1c5c8a;
  --color-link-hover: #123f5f;
  --color-warn-bg: #fff6e6;
  --color-warn-border: #f0c869;
  --color-warn-text: #6b4c05;
  --color-danger-bg: #fdecec;
  --color-danger-border: #ec9a9a;
  --color-danger-text: #7a1f1f;
  --color-success-bg: #e9f6ee;
  --color-success-border: #8fce9f;
  --color-success-text: #1e5c33;
  --color-badge-p0: #163f37;
  --color-badge-p1: #5b6270;
  --color-badge-p2: #a2a8b3;
  --shadow-sm: 0 1px 2px rgba(20, 24, 30, 0.06);
  --shadow-md: 0 4px 16px rgba(20, 24, 30, 0.08);
  --shadow-lg: 0 12px 32px rgba(20, 24, 30, 0.12);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  --max-width: 1180px;
  --content-width: 760px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #12151a;
    --color-bg-subtle: #171b21;
    --color-bg-inset: #1c2128;
    --color-border: #2a2f38;
    --color-border-strong: #3a4049;
    --color-text: #e7e9ec;
    --color-text-muted: #a8afba;
    --color-text-faint: #767e8b;
    --color-accent: #6fcbb2;
    --color-accent-strong: #8fe0c9;
    --color-accent-bg: #16302a;
    --color-link: #7ec2ec;
    --color-link-hover: #a8d8f5;
    --color-warn-bg: #2c2411;
    --color-warn-border: #7a5f1c;
    --color-warn-text: #f0cd7a;
    --color-danger-bg: #2c1717;
    --color-danger-border: #8a3a3a;
    --color-danger-text: #f0a8a8;
    --color-success-bg: #12271a;
    --color-success-border: #3d7a52;
    --color-success-text: #9adcae;
    --color-badge-p0: #8fe0c9;
    --color-badge-p1: #a8afba;
    --color-badge-p2: #5b6270;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; }
a { color: var(--color-link); text-decoration: none; }
a:hover { color: var(--color-link-hover); text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.25; font-weight: 650; letter-spacing: -0.01em; margin: 0 0 0.5em; }
h1 { font-size: 2.1rem; }
h2 { font-size: 1.5rem; margin-top: 2.2em; }
h3 { font-size: 1.2rem; margin-top: 1.7em; }
p { margin: 0 0 1.1em; }
ul, ol { margin: 0 0 1.1em; padding-left: 1.4em; }
li { margin-bottom: 0.35em; }
code { font-family: var(--font-mono); background: var(--color-bg-inset); padding: 0.15em 0.4em; border-radius: 4px; font-size: 0.9em; }
hr { border: none; border-top: 1px solid var(--color-border); margin: 2.5em 0; }

.wrap { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ---------------- Header / primary nav ---------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--color-border);
}
.site-header .wrap { display: flex; align-items: center; gap: 28px; height: 64px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; color: var(--color-text); white-space: nowrap; }
.brand:hover { color: var(--color-text); text-decoration: none; }
.brand .mark { width: 28px; height: 28px; border-radius: 8px; background: var(--color-accent); color: #fff; display: inline-flex; align-items: center; justify-content: center; font-size: 0.85rem; font-weight: 800; }
.primary-nav { display: flex; align-items: center; gap: 4px; flex: 1; }
.primary-nav > .nav-item { position: relative; }
.primary-nav > .nav-item::before {
  content: "";
  position: absolute;
  top: 100%; left: 0; right: 0;
  height: 8px;
}
.primary-nav a.nav-link, .primary-nav button.nav-link {
  font: inherit; background: none; border: none; cursor: pointer;
  color: var(--color-text); font-size: 0.94rem; font-weight: 550;
  padding: 9px 12px; border-radius: var(--radius-sm); display: inline-flex; align-items: center; gap: 4px;
}
.primary-nav a.nav-link:hover, .primary-nav button.nav-link:hover { background: var(--color-bg-inset); text-decoration: none; }
.nav-caret { font-size: 0.7em; opacity: 0.6; transform: translateY(1px); }
.mega-menu {
  position: absolute; top: calc(100% + 8px); left: 0; min-width: 560px;
  background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg); padding: 20px; display: none; gap: 24px;
}
.nav-item:hover .mega-menu, .nav-item:focus-within .mega-menu { display: grid; grid-template-columns: repeat(2, 1fr); }
.mega-menu .mm-col-title { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-faint); margin: 0 0 8px; font-weight: 700; }
.mega-menu a { display: block; padding: 5px 0; color: var(--color-text); font-size: 0.92rem; }
.mega-menu a:hover { color: var(--color-accent); text-decoration: none; }
.mega-menu .mm-full { grid-column: 1 / -1; margin-top: 6px; padding-top: 10px; border-top: 1px solid var(--color-border); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.search-trigger {
  display: flex; align-items: center; gap: 8px; background: var(--color-bg-inset); border: 1px solid var(--color-border);
  border-radius: var(--radius-md); padding: 7px 12px; color: var(--color-text-muted); font-size: 0.88rem; cursor: pointer; min-width: 220px;
}
.search-trigger kbd { margin-left: auto; font-family: var(--font-mono); font-size: 0.75rem; background: var(--color-bg); border: 1px solid var(--color-border); border-radius: 4px; padding: 1px 5px; }
.nav-toggle { display: none; background: none; border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: 7px 10px; cursor: pointer; }

/* ---------------- Search overlay ---------------- */
.search-overlay {
  position: fixed; inset: 0; background: rgba(15, 18, 22, 0.5); z-index: 100;
  display: none; align-items: flex-start; justify-content: center; padding: 10vh 16px;
}
.search-overlay.open { display: flex; }
.search-panel { background: var(--color-bg); width: 100%; max-width: 640px; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg); overflow: hidden; border: 1px solid var(--color-border); }
.search-input-row { display: flex; align-items: center; gap: 10px; padding: 16px 18px; border-bottom: 1px solid var(--color-border); }
.search-input-row input { flex: 1; border: none; outline: none; background: transparent; font-size: 1.05rem; color: var(--color-text); font-family: inherit; }
.search-results { max-height: 55vh; overflow-y: auto; padding: 8px; }
.search-result { display: block; padding: 10px 12px; border-radius: var(--radius-sm); }
.search-result:hover, .search-result.active { background: var(--color-bg-inset); text-decoration: none; }
.search-result .sr-title { font-weight: 600; color: var(--color-text); font-size: 0.95rem; }
.search-result .sr-meta { color: var(--color-text-faint); font-size: 0.78rem; margin-top: 2px; }
.search-empty { padding: 24px 18px; color: var(--color-text-muted); font-size: 0.92rem; }

/* ---------------- Layout shells ---------------- */
.page-shell { display: grid; grid-template-columns: 240px minmax(0,1fr); gap: 48px; padding: 32px 0 80px; }
.page-shell.no-sidebar { grid-template-columns: 1fr; }
.page-shell.wide { grid-template-columns: 240px minmax(0,1fr) 220px; }
.content-col { min-width: 0; max-width: var(--content-width); }
.page-shell.no-sidebar .content-col { max-width: none; }

/* ---------------- Sidebar ---------------- */
.sidebar { position: sticky; top: 84px; align-self: start; max-height: calc(100vh - 100px); overflow-y: auto; }
.sidebar-block { margin-bottom: 22px; }
.sidebar-title { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-faint); font-weight: 700; margin-bottom: 8px; }
.sidebar a.side-link { display: block; padding: 5px 0; font-size: 0.9rem; color: var(--color-text-muted); border-left: 2px solid transparent; padding-left: 10px; margin-left: -1px; }
.sidebar a.side-link:hover { color: var(--color-text); text-decoration: none; }
.sidebar a.side-link.active { color: var(--color-accent); border-left-color: var(--color-accent); font-weight: 600; }
.toc-panel .side-link { font-size: 0.85rem; }

/* ---------------- Breadcrumb ---------------- */
.breadcrumb { font-size: 0.85rem; color: var(--color-text-faint); margin-bottom: 20px; }
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb .sep { margin: 0 6px; }

/* ---------------- Badges / tags ---------------- */
.badge { display: inline-flex; align-items: center; gap: 4px; font-size: 0.72rem; font-weight: 700; padding: 2px 8px; border-radius: 999px; letter-spacing: 0.02em; }
.badge-p0 { background: var(--color-accent-bg); color: var(--color-badge-p0); }
.badge-p1 { background: var(--color-bg-inset); color: var(--color-badge-p1); }
.badge-p2 { background: var(--color-bg-inset); color: var(--color-badge-p2); }
.tag { display: inline-flex; align-items: center; font-size: 0.76rem; font-weight: 600; padding: 3px 9px; border-radius: 6px; background: var(--color-bg-inset); color: var(--color-text-muted); border: 1px solid var(--color-border); }
.tag-row { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 20px; }
.freq-continuous { color: var(--color-danger-text); }
.freq-quarterly { color: var(--color-warn-text); }
.freq-evergreen { color: var(--color-success-text); }

/* ---------------- Hero / homepage ---------------- */
.hero { padding: 64px 0 40px; text-align: center; }
.hero h1 { font-size: 2.6rem; max-width: 780px; margin: 0 auto 14px; }
.hero .hero-sub { font-size: 1.15rem; color: var(--color-text-muted); max-width: 640px; margin: 0 auto 32px; }
.goal-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; max-width: 980px; margin: 0 auto; }
.goal-tile {
  display: flex; align-items: center; gap: 12px; text-align: left; padding: 18px 18px;
  border: 1px solid var(--color-border); border-radius: var(--radius-md); background: var(--color-bg);
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}
.goal-tile:hover { border-color: var(--color-accent); box-shadow: var(--shadow-md); transform: translateY(-1px); text-decoration: none; }
.goal-tile .goal-icon { font-size: 1.5rem; }
.goal-tile .goal-label { font-weight: 650; color: var(--color-text); font-size: 0.96rem; }
.jump-row { display: flex; justify-content: center; gap: 14px; margin: 36px 0 0; flex-wrap: wrap; }
.jump-row a { font-size: 0.92rem; font-weight: 600; padding: 8px 16px; border-radius: 999px; border: 1px solid var(--color-border); color: var(--color-text); }
.jump-row a:hover { border-color: var(--color-accent); color: var(--color-accent); text-decoration: none; }

.trust-strip { background: var(--color-bg-subtle); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); padding: 44px 0; margin-top: 56px; }
.trust-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 28px; }
.trust-item .trust-num { font-size: 1.7rem; font-weight: 750; color: var(--color-accent-strong); }
.trust-item .trust-label { color: var(--color-text-muted); font-size: 0.92rem; margin-top: 2px; }

.section-heading-row { display: flex; align-items: baseline; justify-content: space-between; margin: 56px 0 20px; }
.section-heading-row h2 { margin: 0; }
.section-heading-row a.see-all { font-size: 0.88rem; font-weight: 600; }

/* ---------------- Cards / grids ---------------- */
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.card {
  border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 20px;
  background: var(--color-bg); display: flex; flex-direction: column; gap: 8px;
}
.card:hover { border-color: var(--color-border-strong); box-shadow: var(--shadow-sm); }
.card h3 { margin: 0; font-size: 1.02rem; }
.card p.card-summary { color: var(--color-text-muted); font-size: 0.88rem; margin: 0; flex: 1; }
.card .card-meta { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }
.card-link-block { display: block; color: inherit; }
.card-link-block:hover { text-decoration: none; }

.pillar-card { display: flex; flex-direction: column; gap: 6px; padding: 22px; border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.pillar-card .pillar-num { font-size: 0.78rem; color: var(--color-text-faint); font-weight: 700; }
.pillar-card h3 { margin: 2px 0 4px; }
.pillar-card p { color: var(--color-text-muted); font-size: 0.9rem; margin: 0; }

.mkt-card { display: flex; flex-direction: column; gap: 10px; padding: 22px; border: 1px solid var(--color-border); border-radius: var(--radius-md); }
.mkt-card .mkt-mark { width: 40px; height: 40px; border-radius: 10px; background: var(--color-accent-bg); color: var(--color-accent-strong); display: flex; align-items: center; justify-content: center; font-weight: 800; }

/* ---------------- Summary card (marketplace hub) ---------------- */
.summary-card { background: var(--color-bg-subtle); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 22px 24px; margin: 18px 0 32px; }
.summary-card dl { display: grid; grid-template-columns: 160px 1fr; gap: 8px 18px; margin: 0; }
.summary-card dt { font-size: 0.8rem; color: var(--color-text-faint); font-weight: 700; text-transform: uppercase; letter-spacing: 0.04em; }
.summary-card dd { margin: 0; font-size: 0.94rem; }
.summary-card .verified-line { margin-top: 14px; padding-top: 14px; border-top: 1px solid var(--color-border); font-size: 0.82rem; color: var(--color-text-faint); }

/* ---------------- Callouts ---------------- */
.callout { border-radius: var(--radius-md); padding: 16px 18px; margin: 20px 0; border: 1px solid; font-size: 0.94rem; }
.callout-info { background: var(--color-accent-bg); border-color: var(--color-accent); }
.callout-warn { background: var(--color-warn-bg); border-color: var(--color-warn-border); color: var(--color-warn-text); }
.callout-danger { background: var(--color-danger-bg); border-color: var(--color-danger-border); color: var(--color-danger-text); }
.callout-success { background: var(--color-success-bg); border-color: var(--color-success-border); color: var(--color-success-text); }
.callout strong.callout-label { display: block; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 5px; }

.stub-banner { display: flex; gap: 14px; align-items: flex-start; background: var(--color-warn-bg); border: 1px solid var(--color-warn-border); color: var(--color-warn-text); border-radius: var(--radius-md); padding: 18px 20px; margin: 24px 0 8px; }
.stub-banner .stub-icon { font-size: 1.3rem; }

/* ---------------- Meta box (guide header) ---------------- */
.meta-box { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; background: var(--color-bg-subtle); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 18px 20px; margin: 20px 0 30px; }
.meta-box .meta-item .meta-label { font-size: 0.72rem; text-transform: uppercase; color: var(--color-text-faint); font-weight: 700; letter-spacing: 0.04em; }
.meta-box .meta-item .meta-value { font-size: 0.92rem; margin-top: 2px; }

/* ---------------- Tables ---------------- */
.table-wrap { overflow-x: auto; margin: 18px 0 26px; border: 1px solid var(--color-border); border-radius: var(--radius-md); }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--color-border); vertical-align: top; }
thead th { background: var(--color-bg-subtle); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--color-text-faint); }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--color-bg-subtle); }

/* ---------------- Checklist ---------------- */
.checklist { list-style: none; padding: 0; margin: 18px 0; }
.checklist li { display: flex; gap: 10px; align-items: flex-start; padding: 8px 0; border-bottom: 1px dashed var(--color-border); }
.checklist li:last-child { border-bottom: none; }
.checklist input[type=checkbox] { margin-top: 4px; width: 16px; height: 16px; accent-color: var(--color-accent); }

/* ---------------- Screenshot placeholder (used where a real annotated screenshot belongs) ---------------- */
.screenshot-placeholder {
  border: 1.5px dashed var(--color-border-strong); border-radius: var(--radius-md); background: var(--color-bg-inset);
  padding: 28px 20px; margin: 18px 0 24px; text-align: center; color: var(--color-text-muted);
}
.screenshot-placeholder .sp-icon { font-size: 1.6rem; display: block; margin-bottom: 8px; }
.screenshot-placeholder .sp-caption { font-size: 0.86rem; max-width: 520px; margin: 6px auto 0; }
.screenshot-placeholder .sp-step { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; font-weight: 700; color: var(--color-text-faint); }

/* ---------------- Case-study screenshots & stat comparisons ---------------- */
.case-figure { margin: 22px 0 26px; }
.case-figure img { display: block; width: 100%; border: 1px solid var(--color-border); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.case-figure figcaption { font-size: 0.82rem; color: var(--color-text-faint); margin-top: 8px; text-align: center; }
.stat-compare { display: flex; flex-wrap: wrap; align-items: center; gap: 18px; background: var(--color-bg-subtle); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 22px 24px; margin: 20px 0 26px; }
.stat-compare .stat-block { flex: 1 1 160px; text-align: center; }
.stat-compare .stat-num { display: block; font-size: 1.9rem; font-weight: 700; color: var(--color-accent-strong); line-height: 1.1; }
.stat-compare .stat-label { display: block; font-size: 0.78rem; color: var(--color-text-faint); margin-top: 6px; text-transform: uppercase; letter-spacing: 0.03em; }
.stat-compare .stat-arrow { flex: 0 0 auto; font-size: 1.6rem; color: var(--color-text-faint); }
.stat-compare-caption { font-size: 0.82rem; color: var(--color-text-faint); text-align: center; margin-top: -14px; margin-bottom: 26px; }

/* ---------------- FAQ ---------------- */
.faq-item { border-bottom: 1px solid var(--color-border); padding: 14px 0; }
.faq-item summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: "+"; font-size: 1.2rem; color: var(--color-text-faint); }
.faq-item[open] summary::after { content: "\2212"; }
.faq-item p { margin: 10px 0 0; color: var(--color-text-muted); }

/* ---------------- Related content ---------------- */
.related-box { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 18px 20px; margin: 16px 0; }
.related-box h4 { margin: 0 0 10px; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-text-faint); }
.related-box ul { margin: 0; padding: 0; list-style: none; }
.related-box li { margin: 0 0 8px; }
.next-guide { display: flex; align-items: center; justify-content: space-between; gap: 16px; background: var(--color-accent-bg); border: 1px solid var(--color-accent); border-radius: var(--radius-md); padding: 18px 20px; margin: 40px 0 0; }
.next-guide .ng-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-accent-strong); font-weight: 700; }
.next-guide .ng-title { font-weight: 650; color: var(--color-text); font-size: 1rem; }
.next-guide .ng-arrow { font-size: 1.3rem; color: var(--color-accent-strong); }

/* ---------------- Lead-gen forms ---------------- */
.lead-form { border-radius: var(--radius-md); }
.lead-form form { display: flex; flex-wrap: wrap; align-items: center; gap: 14px 20px; }
.lead-form-copy { flex: 1 1 260px; min-width: 200px; }
.lead-form-headline { font-weight: 700; font-size: 1.05rem; color: var(--color-text); }
.lead-form-subhead { color: var(--color-text-muted); font-size: 0.88rem; margin-top: 3px; }
.lead-form-fields { display: flex; gap: 10px; flex: 1 1 320px; min-width: 260px; }
.lead-form-fields input[type=email] {
  flex: 1; padding: 10px 13px; border-radius: var(--radius-sm); border: 1px solid var(--color-border-strong);
  font-family: inherit; font-size: 0.94rem; background: var(--color-bg); color: var(--color-text);
}
.lead-form-fields input[type=email]:focus { outline: 2px solid var(--color-accent); outline-offset: 1px; }
.lead-form-fields .btn { white-space: nowrap; }
.lead-form-status { flex-basis: 100%; font-size: 0.88rem; font-weight: 600; min-height: 0; }
.lead-form-status.is-success { color: var(--color-accent-strong); }
.lead-form-status.is-error { color: var(--color-warn-text, #9a4a1f); }
.lead-form-fineprint { flex-basis: 100%; font-size: 0.76rem; color: var(--color-text-faint); margin: 0; }

.lead-form-footer { background: var(--color-accent-bg); border: 1px solid var(--color-accent); border-radius: var(--radius-lg); padding: 22px 26px; margin: 8px 0 32px; }
.lead-form-hero { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius-lg); padding: 22px 26px; margin: 28px 0 0; max-width: 900px; margin-left: auto; margin-right: auto; }
.lead-form-content-upgrade { background: var(--color-accent-bg); border: 1px solid var(--color-accent); border-radius: var(--radius-lg); padding: 22px 26px; margin: 36px 0; }
.lead-form-sidebar-cta { background: var(--color-bg-subtle); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 18px 20px; margin: 28px 0 0; }
.lead-form-sidebar-cta form { flex-direction: column; align-items: stretch; }
.lead-form-sidebar-cta .lead-form-fields { flex-direction: column; }

/* ---------------- Buttons ---------------- */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: var(--radius-sm); font-weight: 650; font-size: 0.92rem; border: 1px solid var(--color-border-strong); cursor: pointer; }
.btn-primary { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-strong); color: #fff; text-decoration: none; }
.btn-secondary { background: var(--color-bg); color: var(--color-text); }
.btn-secondary:hover { background: var(--color-bg-inset); text-decoration: none; }

/* ---------------- Calculator UI ---------------- */
.calc-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; margin: 24px 0 40px; align-items: start; }
.calc-form { display: flex; flex-direction: column; gap: 16px; border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 22px; background: var(--color-bg-subtle); }
.calc-field label { display: block; font-size: 0.85rem; font-weight: 650; margin-bottom: 5px; }
.calc-field .field-hint { font-size: 0.78rem; color: var(--color-text-faint); margin-top: 3px; }
.calc-field input, .calc-field select {
  width: 100%; padding: 9px 11px; border-radius: var(--radius-sm); border: 1px solid var(--color-border-strong);
  font-family: inherit; font-size: 0.94rem; background: var(--color-bg); color: var(--color-text);
}
.calc-field input:focus, .calc-field select:focus { outline: 2px solid var(--color-accent); outline-offset: 1px; }
.calc-results { border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 22px; position: sticky; top: 84px; }
.calc-results h3 { margin-top: 0; }
.result-row { display: flex; justify-content: space-between; align-items: baseline; padding: 10px 0; border-bottom: 1px solid var(--color-border); }
.result-row:last-child { border-bottom: none; }
.result-row .rr-label { color: var(--color-text-muted); font-size: 0.9rem; }
.result-row .rr-value { font-weight: 700; font-size: 1.05rem; font-variant-numeric: tabular-nums; }
.result-row.headline .rr-value { color: var(--color-accent-strong); font-size: 1.4rem; }
.result-flag { margin-top: 14px; padding: 10px 12px; border-radius: var(--radius-sm); font-size: 0.85rem; }
.assessment-gaps { margin-top: 16px; }
.assessment-gaps h4 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--color-text-faint); margin: 0 0 10px; }
.assessment-gaps .gap-item { padding: 9px 0; border-bottom: 1px dashed var(--color-border); font-size: 0.87rem; }
.assessment-gaps .gap-item:last-child { border-bottom: none; }
.assessment-gaps .gap-item strong { display: block; margin-bottom: 2px; }
.assessment-gaps .gap-empty { color: var(--color-text-muted); font-size: 0.87rem; }
.mkt-filter-row { display: flex; flex-wrap: wrap; gap: 6px 16px; margin: 10px 0 20px; font-size: 0.88rem; }
.mkt-filter-row label { display: inline-flex; align-items: center; gap: 6px; cursor: pointer; }
.mkt-filter-row input[type=checkbox] { width: 15px; height: 15px; accent-color: var(--color-accent); }
.reference-actions { margin: 18px 0 24px; }
.methodology { margin-top: 18px; font-size: 0.82rem; color: var(--color-text-faint); }
.methodology summary { cursor: pointer; font-weight: 600; color: var(--color-text-muted); }

/* ---------------- Journey ---------------- */
.journey-header { background: var(--color-bg-subtle); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: 24px; margin-bottom: 30px; }
.journey-header dl { display: grid; grid-template-columns: 140px 1fr; gap: 8px 16px; margin: 14px 0 0; }
.journey-header dt { font-size: 0.78rem; font-weight: 700; color: var(--color-text-faint); text-transform: uppercase; }
.journey-header dd { margin: 0; font-size: 0.92rem; }
.journey-steps { list-style: none; padding: 0; margin: 0; counter-reset: step; }
.journey-steps li { counter-increment: step; position: relative; padding: 0 0 28px 40px; border-left: 2px solid var(--color-border); margin-left: 15px; }
.journey-steps li:last-child { border-left-color: transparent; padding-bottom: 0; }
.journey-steps li::before {
  content: counter(step); position: absolute; left: -15px; top: -2px; width: 30px; height: 30px; border-radius: 50%;
  background: var(--color-accent); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700; font-size: 0.85rem;
}
.journey-steps a { font-weight: 650; font-size: 1rem; }

/* ---------------- Footer ---------------- */
.site-footer { border-top: 1px solid var(--color-border); background: var(--color-bg-subtle); padding: 48px 0 32px; margin-top: 64px; }
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 28px; }
.footer-col h4 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-faint); margin: 0 0 12px; }
.footer-col a { display: block; color: var(--color-text-muted); font-size: 0.88rem; padding: 4px 0; }
.footer-col a:hover { color: var(--color-text); text-decoration: none; }
.footer-bottom { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--color-border); display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; color: var(--color-text-faint); font-size: 0.82rem; }

/* ---------------- Sources / freshness footer on articles ---------------- */
.freshness-bar { display: flex; flex-wrap: wrap; gap: 18px; font-size: 0.82rem; color: var(--color-text-faint); border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); padding: 12px 0; margin: 8px 0 28px; }
.freshness-bar b { color: var(--color-text-muted); }
.sources-list { font-size: 0.85rem; color: var(--color-text-muted); }
.sources-list li { margin-bottom: 8px; }

/* ---------------- Filters (browse pages) ---------------- */
.filter-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 24px; }
.filter-chip { font-size: 0.82rem; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--color-border); background: var(--color-bg); color: var(--color-text-muted); cursor: pointer; }
.filter-chip.active { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.resource-list-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--color-border); }
.resource-list-row .rlr-title { font-weight: 600; }
.resource-list-row .rlr-summary { color: var(--color-text-muted); font-size: 0.86rem; margin-top: 2px; }
.resource-list-row .rlr-tags { display: flex; gap: 6px; flex-shrink: 0; }

/* ---------------- Responsive ---------------- */
@media (max-width: 900px) {
  .page-shell, .page-shell.wide { grid-template-columns: 1fr; }
  .sidebar { position: static; max-height: none; margin-bottom: 24px; }
  .calc-panel { grid-template-columns: 1fr; }
  .calc-results { position: static; }
}
@media (max-width: 760px) {
  .primary-nav, .search-trigger .search-trigger-label { display: none; }
  .nav-toggle { display: inline-flex; }
  .hero h1 { font-size: 1.9rem; }
  .mega-menu { position: static; box-shadow: none; min-width: 0; grid-template-columns: 1fr; }
}