/* ============================================================
   StackForBrands — refonte : app layout + responsive
   Composes the design-system tokens & components.
   Layout responds to the .app-shell width via container queries,
   so the same markup drives desktop + the mobile-frame preview.
   ============================================================ */

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg-app);
  color: var(--text-strong);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ---- Prototype viewport chrome -------------------------------- */
.proto-bar {
  position: fixed; z-index: 200; right: 16px; bottom: 16px;
  display: flex; align-items: center; gap: 6px;
  background: var(--green-900); color: var(--text-on-dark);
  padding: 6px; border-radius: var(--radius-pill);
  box-shadow: var(--shadow-lg);
  font-family: var(--font-sans); font-size: var(--fs-caption);
}
.proto-bar button {
  border: 0; background: none; color: var(--text-on-dark-muted);
  font: inherit; font-weight: var(--fw-semibold); cursor: pointer;
  padding: 7px 14px; border-radius: var(--radius-pill);
  display: inline-flex; align-items: center; gap: 6px;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.proto-bar button[data-on="true"] { background: var(--amber-500); color: var(--green-950); }
.proto-bar button svg { width: 15px; height: 15px; }

.stage { min-height: 100vh; }
.stage[data-view="mobile"] {
  background:
    radial-gradient(120% 80% at 50% 0%, #1c4536 0%, var(--green-950) 70%);
  padding: 28px 16px 96px;
  display: flex; justify-content: center;
}
.stage[data-view="mobile"] .device {
  width: 412px; max-width: 100%;
  border-radius: 44px;
  background: #0a0a0a;
  padding: 10px;
  box-shadow: 0 40px 90px rgba(0,0,0,.5), inset 0 0 0 2px #2a2a2a;
}
.stage[data-view="mobile"] .device-screen {
  border-radius: 36px; overflow: hidden; background: var(--bg-app);
  height: 820px; overflow-y: auto; position: relative;
}
.stage[data-view="desktop"] .device { width: 100%; }
.stage[data-view="desktop"] .device-screen { background: var(--bg-app); }

/* The container-query context */
.app-shell { container-type: inline-size; container-name: app; }

/* ---- Generic layout primitives -------------------------------- */
.wrap { width: 100%; max-width: var(--container-max); margin-inline: auto; padding-inline: var(--gutter); }
.wrap-narrow { max-width: var(--container-narrow); }
.section { padding-block: clamp(48px, 8cqi, 88px); }
.section--sunk { background: var(--bg-sunk); }
.section--paper { background: var(--surface-card); }
.eyebrow {
  font-size: var(--fs-overline); font-weight: var(--fw-bold);
  text-transform: uppercase; letter-spacing: var(--ls-overline);
  color: var(--green-600); margin: 0;
}
.eyebrow--gold { color: var(--amber-600); }
.section-head { display: flex; align-items: flex-end; justify-content: space-between; gap: var(--space-6); margin-bottom: var(--space-8); flex-wrap: wrap; }
.section-head h2 { font-size: var(--fs-h1); margin: var(--space-2) 0 0; letter-spacing: var(--ls-tight); }
.lead { font-size: var(--fs-body-l); color: var(--text-body); line-height: var(--lh-body); }

.grid { display: grid; gap: var(--space-6); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.stack { display: flex; flex-direction: column; }
.row { display: flex; align-items: center; }
.gap-2 { gap: var(--space-2); } .gap-3 { gap: var(--space-3); } .gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.wrapwr { flex-wrap: wrap; }

/* ---- Header --------------------------------------------------- */
.hdr {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--paper) 84%, transparent);
  backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--border-soft);
}
.hdr__inner { display: flex; align-items: center; gap: var(--space-7); padding-block: var(--space-4); }
.hdr__brand { background: none; border: 0; padding: 0; cursor: pointer; flex: none; }
.hdr__links { display: flex; align-items: center; gap: var(--space-6); list-style: none; margin: 0; padding: 0; }
.hdr__links a { font-size: var(--fs-body-s); font-weight: var(--fw-medium); color: var(--text-body); cursor: pointer; padding: 6px 0; position: relative; white-space: nowrap; transition: color var(--dur-fast) var(--ease-out); }
.hdr__links a:hover { color: var(--text-strong); }
.hdr__links a[aria-current="page"] { color: var(--text-strong); font-weight: var(--fw-semibold); }
.hdr__links a[aria-current="page"]::after { content: ""; position: absolute; left: 0; right: 0; bottom: -2px; height: 2px; background: var(--amber-500); border-radius: 2px; }
.hdr__spacer { flex: 1; }
.hdr__actions { display: flex; align-items: center; gap: var(--space-3); }
.hdr__icon-btn {
  width: 40px; height: 40px; display: grid; place-items: center;
  border: 1px solid var(--border); background: var(--surface-card);
  border-radius: var(--radius-sm); cursor: pointer; color: var(--text-body);
  transition: border-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.hdr__icon-btn:hover { border-color: var(--green-400); color: var(--text-strong); }
.hdr__icon-btn svg { width: 19px; height: 19px; }
.hdr__burger { display: none; }

/* ---- Search command palette ----------------------------------- */
.searchbtn {
  display: flex; align-items: center; gap: var(--space-3);
  height: 40px; padding: 0 var(--space-4) 0 var(--space-3);
  min-width: 240px; cursor: text;
  border: 1px solid var(--border); background: var(--surface-card);
  border-radius: var(--radius-sm); color: var(--text-muted);
  font-size: var(--fs-body-s); transition: border-color var(--dur-fast) var(--ease-out);
}
.searchbtn:hover { border-color: var(--green-400); }
.searchbtn svg { width: 17px; height: 17px; flex: none; }
.searchbtn kbd {
  margin-left: auto; font-family: var(--font-mono); font-size: 11px;
  border: 1px solid var(--border); border-radius: 5px; padding: 1px 6px;
  background: var(--paper-sunk); color: var(--text-faint);
}
.search-ov { position: fixed; inset: 0; z-index: 100; background: color-mix(in oklab, var(--green-950) 42%, transparent); backdrop-filter: blur(3px); display: flex; align-items: flex-start; justify-content: center; padding-top: 12vh; }
.search-panel { width: min(620px, 92vw); background: var(--surface-card); border-radius: var(--radius-lg); box-shadow: var(--shadow-xl); overflow: hidden; }
.search-panel__field { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-5) var(--space-6); border-bottom: 1px solid var(--border-soft); }
.search-panel__field svg { width: 20px; height: 20px; color: var(--text-muted); flex: none; }
.search-panel__field input { flex: 1; border: 0; outline: 0; font: inherit; font-size: var(--fs-h4); color: var(--text-strong); background: none; }
.search-panel__results { max-height: 50vh; overflow-y: auto; padding: var(--space-3); }
.search-grouplabel { font-size: var(--fs-overline); text-transform: uppercase; letter-spacing: var(--ls-overline); color: var(--text-faint); font-weight: var(--fw-bold); padding: var(--space-3) var(--space-3) var(--space-2); }
.search-item { display: flex; align-items: center; gap: var(--space-3); width: 100%; text-align: left; border: 0; background: none; cursor: pointer; padding: var(--space-3); border-radius: var(--radius-sm); font: inherit; color: var(--text-body); }
.search-item:hover, .search-item[data-active="true"] { background: var(--green-50); color: var(--text-strong); }
.search-item .si-cat { margin-left: auto; font-size: var(--fs-caption); color: var(--text-faint); }
.search-empty { padding: var(--space-7); text-align: center; color: var(--text-muted); font-size: var(--fs-body-s); }

/* ---- Mobile drawer -------------------------------------------- */
.drawer { position: fixed; inset: 0; z-index: 90; display: none; }
.drawer[data-open="true"] { display: block; }
.drawer__scrim { position: absolute; inset: 0; background: color-mix(in oklab, var(--green-950) 45%, transparent); }
.drawer__panel { position: absolute; top: 0; right: 0; height: 100%; width: min(320px, 86%); background: var(--surface-card); box-shadow: var(--shadow-xl); padding: var(--space-6); display: flex; flex-direction: column; gap: var(--space-2); }
.drawer__panel a { padding: var(--space-4) var(--space-2); font-size: var(--fs-h4); font-weight: var(--fw-medium); color: var(--text-body); border-bottom: 1px solid var(--line-100); cursor: pointer; }
.drawer__panel a[aria-current="page"] { color: var(--text-strong); }
.drawer__close { align-self: flex-end; border: 0; background: none; cursor: pointer; color: var(--text-muted); padding: 4px; margin-bottom: var(--space-2); }
.drawer__close svg { width: 24px; height: 24px; }

/* ---- Hero ----------------------------------------------------- */
.hero { position: relative; overflow: hidden; }
.hero__grid { display: grid; grid-template-columns: 1.08fr 0.92fr; gap: var(--space-10); align-items: center; padding-block: clamp(40px, 7cqi, 84px) clamp(48px, 8cqi, 92px); }
.hero h1 { font-size: clamp(2.4rem, 6.2cqi, var(--fs-display-l)); line-height: 1.02; letter-spacing: var(--ls-tight); margin: var(--space-5) 0 0; }
.hero h1 em { color: var(--green-600); font-style: italic; }
.hero__stats { display: flex; gap: var(--space-8); margin-top: var(--space-8); }
.hero__stat .n { font-family: var(--font-mono); font-size: var(--fs-h2); color: var(--text-strong); font-weight: var(--fw-semibold); font-variant-numeric: tabular-nums; }
.hero__stat .l { font-size: var(--fs-caption); color: var(--text-muted); }

/* hero preview card (stack list) */
.preview-card { background: var(--surface-card); border-radius: var(--radius-lg); box-shadow: var(--ring-hairline), var(--shadow-xl); overflow: hidden; }
.preview-card__head { display: flex; align-items: center; justify-content: space-between; padding: var(--space-5) var(--space-6); border-bottom: 1px solid var(--border-soft); }
.preview-card__head h3 { font-family: var(--font-display); font-weight: var(--fw-semibold); font-size: var(--fs-h4); margin: 0; }
.preview-row { display: flex; align-items: center; gap: var(--space-3); width: 100%; text-align: left; padding: var(--space-4) var(--space-6); background: none; border: 0; border-bottom: 1px solid var(--line-100); cursor: pointer; transition: background var(--dur-fast) var(--ease-out); }
.preview-row:last-child { border-bottom: 0; }
.preview-row:hover { background: var(--green-50); }
.preview-row .nm { flex: 1; }
.preview-row .nm b { display: block; font-weight: var(--fw-semibold); color: var(--text-strong); font-size: var(--fs-body); }
.preview-row .nm span { font-size: var(--fs-caption); color: var(--text-muted); }
.preview-row .pr { font-family: var(--font-mono); font-size: var(--fs-caption); color: var(--text-strong); min-width: 54px; text-align: right; }

/* ---- Logo tile (monogram) ------------------------------------- */
.mono { flex: none; display: grid; place-items: center; font-family: var(--font-display); font-weight: var(--fw-bold); color: var(--text-on-dark); border-radius: var(--radius-md); }

/* ---- Trust strip ---------------------------------------------- */
.trust { border-block: 1px solid var(--border-soft); background: var(--surface-card); }
.trust__inner { display: flex; align-items: center; justify-content: space-between; gap: var(--space-6); padding-block: 18px; flex-wrap: wrap; }
.trust__label { font-size: var(--fs-caption); color: var(--text-muted); text-transform: uppercase; letter-spacing: var(--ls-overline); font-weight: var(--fw-bold); }
.trust__items { display: flex; gap: var(--space-6); flex-wrap: wrap; font-size: var(--fs-body-s); color: var(--text-body); }
.trust__items span { display: inline-flex; align-items: center; gap: 7px; }
.trust__items svg { width: 16px; height: 16px; color: var(--success-600); }

/* ---- Page header band ----------------------------------------- */
.pagehead { background: var(--surface-card); border-bottom: 1px solid var(--border-soft); }
.pagehead__inner { padding-block: clamp(40px, 6cqi, 64px) clamp(28px, 4cqi, 44px); }
.pagehead h1 { font-size: clamp(2rem, 5cqi, var(--fs-display-m)); margin: var(--space-3) 0 0; line-height: 1.05; letter-spacing: var(--ls-tight); max-width: 22ch; }
.pagehead .lead { max-width: 62ch; margin-top: var(--space-4); }

/* ---- Breadcrumb ----------------------------------------------- */
.crumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: var(--fs-caption); color: var(--text-muted); }
.crumbs a { cursor: pointer; color: var(--green-700); }
.crumbs a:hover { color: var(--green-900); }
.crumbs svg { width: 13px; height: 13px; color: var(--text-faint); }
.crumbs .cur { color: var(--text-strong); }
.crumbs--dark { color: var(--text-on-dark-muted); }
.crumbs--dark a { color: var(--amber-300); }
.crumbs--dark .cur { color: var(--text-on-dark); }
.crumbs--dark svg { color: color-mix(in oklab, var(--text-on-dark-muted) 70%, transparent); }

/* ---- Toolbar (filters + sort) --------------------------------- */
.toolbar { display: flex; align-items: center; gap: var(--space-4); flex-wrap: wrap; }
.chips { display: flex; gap: var(--space-2); flex-wrap: wrap; }
.toolbar__right { margin-left: auto; display: flex; align-items: center; gap: var(--space-3); }
.result-count { font-size: var(--fs-body-s); color: var(--text-muted); }
.result-count b { color: var(--text-strong); font-weight: var(--fw-semibold); }

/* selectable tool card (compare checkbox) */
.tool-pickable { position: relative; }
.tool-check {
  position: absolute; top: var(--space-4); right: var(--space-4); z-index: 2;
  width: 26px; height: 26px; border-radius: 7px; border: 1.5px solid var(--border);
  background: var(--surface-card); display: grid; place-items: center; cursor: pointer;
  transition: all var(--dur-fast) var(--ease-out); color: transparent;
}
.tool-check:hover { border-color: var(--green-500); }
.tool-check[data-on="true"] { background: var(--green-700); border-color: var(--green-700); color: #fff; }
.tool-check svg { width: 16px; height: 16px; }

/* ---- Compare drawer (bottom sheet) ---------------------------- */
.compare-dock {
  position: sticky; bottom: 0; z-index: 40;
  background: var(--green-900); color: var(--text-on-dark);
  border-top: 1px solid color-mix(in oklab, white 12%, transparent);
  box-shadow: 0 -12px 32px rgba(16,24,15,.18);
}
.compare-dock__inner { display: flex; align-items: center; gap: var(--space-4); padding-block: var(--space-4); flex-wrap: wrap; }
.compare-dock__avatars { display: flex; }
.compare-dock__avatars .mono { width: 38px; height: 38px; font-size: 1rem; margin-left: -8px; box-shadow: 0 0 0 2px var(--green-900); }
.compare-dock__avatars .mono:first-child { margin-left: 0; }
.compare-dock__txt { font-size: var(--fs-body-s); color: var(--text-on-dark-muted); }
.compare-dock__txt b { color: var(--text-on-dark); }

.compare-modal { position: fixed; inset: 0; z-index: 120; display: flex; align-items: stretch; justify-content: center; padding: clamp(12px, 4vw, 56px); background: color-mix(in oklab, var(--green-950) 55%, transparent); backdrop-filter: blur(4px); overflow-y: auto; }
.compare-sheet { background: var(--surface-card); border-radius: var(--radius-xl); box-shadow: var(--shadow-xl); width: min(1080px, 100%); margin: auto; overflow: hidden; }
.compare-sheet__head { display: flex; align-items: center; justify-content: space-between; padding: var(--space-6) var(--space-7); border-bottom: 1px solid var(--border-soft); }
.compare-table { width: 100%; border-collapse: collapse; }
.compare-table th, .compare-table td { text-align: left; padding: var(--space-4) var(--space-5); border-bottom: 1px solid var(--line-100); vertical-align: top; font-size: var(--fs-body-s); }
.compare-table thead th { background: var(--paper-sunk); position: sticky; top: 0; }
.compare-table .rowlabel { color: var(--text-muted); font-weight: var(--fw-semibold); white-space: nowrap; width: 150px; }

/* ---- Faceted category layout ---------------------------------- */
.cat-layout { display: grid; grid-template-columns: 260px 1fr; gap: var(--space-9); align-items: start; }
.facets { position: sticky; top: 96px; display: flex; flex-direction: column; gap: var(--space-6); }
.facet h4 { font-size: var(--fs-overline); text-transform: uppercase; letter-spacing: var(--ls-overline); color: var(--text-muted); margin: 0 0 var(--space-3); font-weight: var(--fw-bold); }
.facet label { display: flex; align-items: center; gap: var(--space-3); padding: 7px 0; font-size: var(--fs-body-s); color: var(--text-body); cursor: pointer; }
.facet input { accent-color: var(--green-700); width: 16px; height: 16px; }
.facet .count { margin-left: auto; font-family: var(--font-mono); font-size: var(--fs-caption); color: var(--text-faint); }

/* ---- Tool detail layout --------------------------------------- */
.tool-hero { background: var(--green-800); color: var(--text-on-dark); }
.tool-hero__inner { padding-block: clamp(32px, 5cqi, 44px) clamp(40px, 6cqi, 56px); }
.tool-hero__top { display: grid; grid-template-columns: 1fr auto; gap: var(--space-8); align-items: center; margin-top: var(--space-6); }
.tool-hero__id { display: flex; gap: var(--space-5); align-items: center; }
.tool-hero__id .mono { width: 72px; height: 72px; font-size: 2rem; background: color-mix(in oklab, white 12%, transparent); color: var(--amber-300); border-radius: var(--radius-lg); }
.tool-hero h1 { font-size: clamp(2rem, 5cqi, var(--fs-display-m)); color: var(--text-on-dark); margin: 0; }
.tool-layout { display: grid; grid-template-columns: 1fr 320px; gap: var(--space-10); align-items: start; padding-block: clamp(40px, 6cqi, 56px) clamp(56px, 8cqi, 96px); }
.tool-aside { position: sticky; top: 96px; display: flex; flex-direction: column; gap: var(--space-5); }
.spec-list { margin: 0; display: flex; flex-direction: column; gap: var(--space-3); }
.spec-list > div { display: flex; justify-content: space-between; gap: var(--space-4); font-size: var(--fs-body-s); padding-bottom: var(--space-3); border-bottom: 1px solid var(--line-100); }
.spec-list > div:last-child { border-bottom: 0; padding-bottom: 0; }
.spec-list dt { color: var(--text-muted); margin: 0; }
.spec-list dd { margin: 0; color: var(--text-strong); font-weight: var(--fw-semibold); }
.proscons { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-5); }
.proscons li { display: flex; gap: var(--space-3); font-size: var(--fs-body-s); color: var(--text-body); line-height: var(--lh-body); }
.proscons svg { width: 18px; height: 18px; flex: none; margin-top: 2px; }
.proscons ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: var(--space-3); }

/* ---- Article / guide ------------------------------------------ */
.article-layout { display: grid; grid-template-columns: 240px 1fr; gap: var(--space-10); align-items: start; padding-block: clamp(40px, 6cqi, 64px) clamp(56px, 8cqi, 96px); }
.toc { position: sticky; top: 96px; }
.toc h4 { font-size: var(--fs-overline); text-transform: uppercase; letter-spacing: var(--ls-overline); color: var(--text-muted); margin: 0 0 var(--space-4); font-weight: var(--fw-bold); }
.toc ol { list-style: none; margin: 0; padding: 0; counter-reset: toc; display: flex; flex-direction: column; gap: 2px; }
.toc a { display: flex; gap: var(--space-3); padding: 8px 12px; border-left: 2px solid var(--line-200); font-size: var(--fs-body-s); color: var(--text-muted); cursor: pointer; counter-increment: toc; transition: all var(--dur-fast) var(--ease-out); }
.toc a::before { content: counter(toc, decimal-leading-zero); font-family: var(--font-mono); color: var(--text-faint); font-size: var(--fs-caption); }
.toc a:hover { color: var(--text-strong); border-left-color: var(--green-400); }
.toc a[data-active="true"] { color: var(--green-800); border-left-color: var(--amber-500); font-weight: var(--fw-semibold); background: var(--green-50); }
.toc a[data-active="true"]::before { color: var(--amber-600); }

.prose { max-width: 72ch; }
.prose h2 { font-size: var(--fs-h1); letter-spacing: var(--ls-tight); margin: var(--space-10) 0 var(--space-4); scroll-margin-top: 90px; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: var(--fs-h3); margin: var(--space-8) 0 var(--space-3); }
.prose p { font-size: var(--fs-body-l); line-height: var(--lh-relaxed); color: var(--text-body); margin: 0 0 var(--space-4); text-wrap: pretty; }
.prose a.inline { color: var(--green-700); text-decoration: underline; text-decoration-color: var(--green-300); text-underline-offset: 3px; cursor: pointer; }
.prose a.inline:hover { color: var(--green-900); }
.prose ul { padding-left: 1.2em; color: var(--text-body); font-size: var(--fs-body-l); line-height: var(--lh-relaxed); }
.prose li { margin-bottom: var(--space-2); }

.pullquote { font-family: var(--font-display); font-size: var(--fs-h2); line-height: 1.3; color: var(--green-800); border-left: 3px solid var(--amber-500); padding-left: var(--space-6); margin: var(--space-8) 0; font-style: italic; }

/* inline tool callout (internal linking / maillage) */
.callout { display: flex; gap: var(--space-4); align-items: center; background: var(--bg-sunk); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-5); margin: var(--space-6) 0; }
.callout .mono { width: 48px; height: 48px; font-size: 1.25rem; }
.callout__body { flex: 1; }
.callout__body b { color: var(--text-strong); }
.callout__body p { margin: 2px 0 0; font-size: var(--fs-body-s); color: var(--text-muted); line-height: var(--lh-body); }

/* related links (maillage interne) */
.linklist { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; }
.linklist a { display: flex; align-items: center; gap: var(--space-3); padding: var(--space-4) 0; border-bottom: 1px solid var(--line-100); cursor: pointer; font-size: var(--fs-body); color: var(--text-strong); font-weight: var(--fw-medium); }
.linklist a:hover { color: var(--green-700); }
.linklist a .arr { margin-left: auto; color: var(--text-faint); }
.linklist a:hover .arr { color: var(--green-600); }
.linklist svg { width: 16px; height: 16px; }

/* ---- FAQ accordion -------------------------------------------- */
.faq { display: flex; flex-direction: column; gap: var(--space-3); }
.faq__item { border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface-card); overflow: hidden; }
.faq__q { display: flex; align-items: center; gap: var(--space-4); width: 100%; text-align: left; border: 0; background: none; cursor: pointer; padding: var(--space-5) var(--space-6); font: inherit; font-size: var(--fs-h4); font-weight: var(--fw-semibold); color: var(--text-strong); font-family: var(--font-display); }
.faq__q .ic { margin-left: auto; flex: none; transition: transform var(--dur-base) var(--ease-out); color: var(--green-600); }
.faq__q .ic svg { width: 20px; height: 20px; }
.faq__item[data-open="true"] .faq__q .ic { transform: rotate(45deg); }
.faq__a { display: grid; grid-template-rows: 0fr; transition: grid-template-rows var(--dur-slow) var(--ease-out); }
.faq__item[data-open="true"] .faq__a { grid-template-rows: 1fr; }
.faq__a > div { overflow: hidden; }
.faq__a p { margin: 0; padding: 0 var(--space-6) var(--space-6); color: var(--text-body); font-size: var(--fs-body); line-height: var(--lh-relaxed); }

/* ---- SERP preview --------------------------------------------- */
.serp { background: var(--surface-card); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: var(--space-6); box-shadow: var(--shadow-sm); max-width: 600px; }
.serp__url { display: flex; align-items: center; gap: 8px; font-size: var(--fs-caption); color: var(--text-body); }
.serp__url .fav { width: 26px; height: 26px; border-radius: 50%; background: var(--green-800); color: var(--amber-300); display: grid; place-items: center; font-family: var(--font-display); font-weight: var(--fw-bold); font-size: 13px; flex: none; }
.serp__url .path { line-height: 1.2; }
.serp__url .path b { display: block; color: var(--text-strong); font-weight: var(--fw-semibold); }
.serp__title { font-family: 'Arial', sans-serif; color: #1a0dab; font-size: 20px; margin: var(--space-3) 0 2px; line-height: 1.3; }
.serp__desc { font-family: 'Arial', sans-serif; color: #4d5156; font-size: 14px; line-height: 1.58; margin: 0; }
.serp__rich { display: flex; align-items: center; gap: 8px; font-family: 'Arial', sans-serif; font-size: 13px; color: #70757a; margin-top: 6px; }
.serp__stars { color: #fbbc04; letter-spacing: 1px; }
.serp__chips { display: flex; gap: 6px; margin-top: 10px; flex-wrap: wrap; }
.serp__chips span { font-family: 'Arial', sans-serif; font-size: 12px; color: #1a0dab; border: 1px solid #dadce0; border-radius: 999px; padding: 3px 11px; }

/* ---- Method / about steps ------------------------------------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-5); counter-reset: step; }
.step { background: var(--surface-card); border-radius: var(--radius-lg); box-shadow: var(--ring-hairline), var(--shadow-sm); padding: var(--space-6); }
.step__n { font-family: var(--font-mono); font-size: var(--fs-h3); color: var(--amber-600); counter-increment: step; }
.step__n::before { content: counter(step, decimal-leading-zero); }
.step h3 { font-size: var(--fs-h4); margin: var(--space-3) 0 var(--space-2); }
.step p { font-size: var(--fs-body-s); color: var(--text-muted); line-height: var(--lh-body); margin: 0; }

/* ---- Misc ----------------------------------------------------- */
.divider { height: 1px; background: var(--border-soft); border: 0; margin: 0; }
.pill-note { display: inline-flex; align-items: center; gap: 8px; font-size: var(--fs-caption); color: var(--green-700); background: var(--green-50); border-radius: var(--radius-pill); padding: 6px 14px; font-weight: var(--fw-semibold); }
.fadein { animation: fadein var(--dur-slow) var(--ease-out) both; }
@keyframes fadein { from { transform: translateY(10px); } to { transform: none; } }
@media (prefers-reduced-motion: reduce) { .fadein { animation: none; } }

/* ============================================================
   RESPONSIVE — driven by .app-shell width (container queries)
   ============================================================ */
@container app (max-width: 1080px) {
  .searchbtn { min-width: 0; }
  .searchbtn-label, .searchbtn kbd { display: none; }
  .searchbtn { width: 40px; justify-content: center; padding: 0; }
}
@container app (max-width: 960px) {
  .hero__grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .preview-card { max-width: 460px; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .tool-layout { grid-template-columns: 1fr; }
  .tool-aside { position: static; flex-direction: row; flex-wrap: wrap; }
  .tool-aside > * { flex: 1 1 240px; }
  .article-layout { grid-template-columns: 1fr; }
  .toc { position: static; }
  .toc ol { flex-direction: row; flex-wrap: wrap; }
  .toc a { border-left: 0; border-bottom: 2px solid var(--line-200); }
  .cat-layout { grid-template-columns: 1fr; }
  .facets { position: static; flex-direction: row; flex-wrap: wrap; gap: var(--space-7); }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .tool-hero__top { grid-template-columns: 1fr; }
}
@container app (max-width: 680px) {
  .hdr__links, .searchbtn-label, .hdr__cta { display: none; }
  .hdr__burger { display: grid; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .hero__stats { gap: var(--space-6); }
  .section-head { flex-direction: column; align-items: flex-start; }
  .proscons { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .toolbar__right { margin-left: 0; width: 100%; }
  .toc ol { flex-direction: column; }
  .toc a { border-bottom: 0; border-left: 2px solid var(--line-200); }
  .compare-table { font-size: var(--fs-caption); }
  .tool-hero__top { gap: var(--space-5); }
}