/* ============================================================================
   AIToolsay — public AI Guides surface
   Namespace: .gdp-
   ----------------------------------------------------------------------------
   Layering rules for this file:

   1. Every colour resolves through a LOCAL --gdp-* token. The public set
      (--aits-*) has no dark twins for its *-ink colours, so
      `color: var(--aits-green-ink)` on a tint renders dark-on-dark. §1 declares
      its own *-ink values and remaps ALL of them under body.theme-dark.
   2. Icons are FontAwesome FREE 5.15.3 out here. FA6-only names render as an
      EMPTY BOX, so §0 shims every name this surface uses.
   3. Every :hover lift/tint sits inside @media (hover:hover). On touch, :hover
      latches after a tap — two "active" cards is the classic symptom.
   4. Small white text on the brand blue #3680ED is only 3.4:1. Anything under
      ~15px on a solid brand fill uses --gdp-brand-solid (#2060C0, 6.0:1).
   ========================================================================== */

/* ============================================================================
   §0  FA6 → FA5 shim
   ========================================================================== */
.gdp .fa-magnifying-glass:before        { content: "\f002"; }
.gdp .fa-magnifying-glass-chart:before  { content: "\f002"; }
.gdp .fa-xmark:before                   { content: "\f00d"; }
.gdp .fa-circle-check:before            { content: "\f058"; }
.gdp .fa-circle-xmark:before            { content: "\f057"; }
.gdp .fa-circle-info:before             { content: "\f05a"; }
.gdp .fa-circle-question:before         { content: "\f059"; }
.gdp .fa-circle-play:before             { content: "\f144"; }
.gdp .fa-triangle-exclamation:before    { content: "\f071"; }
.gdp .fa-arrow-right-long:before        { content: "\f30b"; }
.gdp .fa-arrow-up-right-from-square:before { content: "\f35d"; }
.gdp .fa-shield-halved:before           { content: "\f3ed"; }
.gdp .fa-pen-to-square:before           { content: "\f044"; }
.gdp .fa-pen-nib:before                 { content: "\f5ad"; }
.gdp .fa-arrows-rotate:before           { content: "\f021"; }
.gdp .fa-rotate-left:before             { content: "\f0e2"; }
.gdp .fa-file-lines:before              { content: "\f15c"; }
.gdp .fa-list-check:before              { content: "\f0ae"; }
.gdp .fa-list-ol:before                 { content: "\f0cb"; }
.gdp .fa-folder-tree:before             { content: "\f07b"; }
.gdp .fa-share-nodes:before             { content: "\f1e0"; }
.gdp .fa-wand-magic-sparkles:before     { content: "\f0d0"; }
.gdp .fa-diagram-project:before         { content: "\f542"; }
.gdp .fa-graduation-cap:before          { content: "\f19d"; }
.gdp .fa-clapperboard:before            { content: "\f008"; }
.gdp .fa-calendar-day:before            { content: "\f783"; }
.gdp .fa-hourglass-half:before          { content: "\f252"; }
.gdp .fa-clipboard-check:before         { content: "\f46c"; }
.gdp .fa-flag-checkered:before          { content: "\f11e"; }
.gdp .fa-box-open:before                { content: "\f49e"; }
.gdp .fa-file-arrow-down:before         { content: "\f56d"; }
.gdp .fa-table-cells:before             { content: "\f00a"; }
.gdp .fa-code-branch:before             { content: "\f126"; }
.gdp .fa-chart-pie:before               { content: "\f200"; }
.gdp .fa-briefcase:before               { content: "\f0b1"; }
.gdp .fa-microchip:before               { content: "\f2db"; }
.gdp .fa-seedling:before                { content: "\f4d8"; }
.gdp .fa-layer-group:before             { content: "\f5fd"; }
.gdp .fa-chart-line:before              { content: "\f201"; }
.gdp .fa-sliders:before                 { content: "\f1de"; }
.gdp .fa-ellipsis:before                { content: "\f141"; }
.gdp .fa-hashtag:before                 { content: "\f292"; }
.gdp .fa-sparkles:before                { content: "\f005"; }   /* star */
.gdp .fa-x-twitter:before               { content: "\f099"; }
.gdp .fa-signal:before                  { content: "\f012"; }
.gdp .fa-robot:before                   { content: "\f544"; }
.gdp .fa-cube:before                    { content: "\f1b2"; }
.gdp .fa-brain:before                   { content: "\f5dc"; }
.gdp .fa-book-open:before               { content: "\f518"; }

/* ============================================================================
   §1  Tokens
   ========================================================================== */
.gdp {
    /* ── Brand ─────────────────────────────────────────────────────────── */
    --gdp-brand:      var(--aits-blue, #3680ED);
    --gdp-brand-2:    var(--aits-blue-dark, #2060C0);
    --gdp-brand-lite: var(--aits-blue-light, #60A4F5);
    --gdp-brand-ink:  var(--aits-blue-dark, #2060C0);
    --gdp-brand-soft: var(--aits-blue-tint, #EAF2FD);
    --gdp-brand-soft2:var(--aits-blue-tint-2, #F4F8FE);
    --gdp-brand-line: var(--aits-blue-line, #CFE0FA);
    --gdp-grad:       linear-gradient(135deg, var(--gdp-brand) 0%, var(--gdp-brand-2) 100%);

    /* Small white glyphs need the deeper twin: #3680ED is 3.4:1 against white. */
    --gdp-brand-solid: var(--aits-blue-dark, #2060C0);

    /* ── Surfaces ──────────────────────────────────────────────────────── */
    --gdp-bg:      var(--aits-bg, #FFFFFF);
    --gdp-bg-deep: var(--aits-bg-deep, #F6F8FB);
    --gdp-card:    var(--aits-card, #FFFFFF);
    --gdp-card-2:  var(--aits-surface-2, #F8FAFC);
    --gdp-card-3:  var(--aits-surface-3, #F1F5F9);

    /* ── Ink ────────────────────────────────────────────────────────────
       --gdp-faint points at --aits-mut, not --aits-faint: the site's faint
       grey is #999 (2.85:1 on white) and this file uses the token for hints
       and metadata. That is instructional text, so it needs 4.5:1. */
    --gdp-ink:      var(--aits-ink, #0F172A);
    --gdp-ink-soft: var(--aits-ink-soft, #1E293B);
    --gdp-txt:      var(--aits-txt, #334155);
    --gdp-mut:      var(--aits-mut, #64748B);
    --gdp-faint:    var(--aits-mut, #64748B);

    /* ── Lines ─────────────────────────────────────────────────────────── */
    --gdp-line:        var(--aits-line, #E2E8F0);
    --gdp-line-soft:   var(--aits-line-soft, #EEF2F7);
    --gdp-line-strong: var(--aits-line-strong, #CBD5E1);

    /* ── Semantic hues ─────────────────────────────────────────────────
       Local because --aits-*-ink has no dark twin. All remapped below. */
    --gdp-green:  #0CA678; --gdp-green-soft:  #E6FCF3; --gdp-green-ink:  #087F5B; --gdp-green-solid:  #0A7F5C;
    --gdp-amber:  #D97706; --gdp-amber-soft:  #FFF5E1; --gdp-amber-ink:  #B45309; --gdp-amber-solid:  #A85D06;
    --gdp-red:    #E03131; --gdp-red-soft:    #FFECEC; --gdp-red-ink:    #B71C1C; --gdp-red-solid:    #C42121;
    --gdp-violet: #7048E8; --gdp-violet-soft: #EEE6FF; --gdp-violet-ink: #4C2FBE; --gdp-violet-solid: #5B34D6;
    --gdp-cyan:   #0BA5C7; --gdp-cyan-soft:   #E4F8FC; --gdp-cyan-ink:   #05687E; --gdp-cyan-solid:   #0A7F99;
    --gdp-rose:   #E8497E; --gdp-rose-soft:   #FDEBF1; --gdp-rose-ink:   #B32458; --gdp-rose-solid:   #C42B63;
    --gdp-teal:   #0D9488; --gdp-teal-soft:   #E3F8F5; --gdp-teal-ink:   #0B6E66; --gdp-teal-solid:   #0B6E66;
    --gdp-indigo: #4F46E5; --gdp-indigo-soft: #EBEAFE; --gdp-indigo-ink: #372FB0; --gdp-indigo-solid: #3B32C4;
    --gdp-blue:      var(--aits-blue, #3680ED);
    --gdp-blue-soft: var(--aits-blue-tint, #EAF2FD);
    --gdp-blue-ink:  var(--aits-blue-dark, #2060C0);
    --gdp-slate:  #64748B; --gdp-slate-soft: var(--aits-surface-3, #F1F5F9); --gdp-slate-ink: var(--aits-mut, #64748B);

    /* Per-category accent, overridden inline by an admin's colour. */
    --gdp-cat-tint: var(--gdp-brand);

    /* ── Geometry ──────────────────────────────────────────────────────── */
    --gdp-r-xs: var(--r-xs, 6px);
    --gdp-r-sm: var(--r-sm, 8px);
    --gdp-r:    var(--r-md, 10px);
    --gdp-r-md: var(--r-lg, 14px);
    --gdp-r-lg: var(--r-xl, 18px);
    --gdp-r-xl: var(--r-2xl, 24px);

    /* ── Elevation + motion ────────────────────────────────────────────── */
    --gdp-sh-xs: var(--sh-xs, 0 1px 2px rgba(15,23,42,.04));
    --gdp-sh-sm: var(--sh-sm, 0 1px 2px rgba(15,23,42,.06));
    --gdp-sh:    var(--sh-md, 0 8px 20px rgba(15,23,42,.07));
    --gdp-sh-lg: var(--sh-lg, 0 12px 32px rgba(15,23,42,.12));
    --gdp-sh-xl: var(--sh-pop, 0 16px 48px rgba(15,23,42,.16));
    --gdp-sh-brand: var(--sh-brand, 0 6px 18px rgba(54,128,237,.26));
    --gdp-ring:  var(--ring, 0 0 0 3px rgba(96,164,245,.32));

    --gdp-ease: cubic-bezier(.22,.9,.32,1);
    --gdp-fast: 140ms var(--gdp-ease);
    --gdp-mid:  var(--t, .18s) var(--gdp-ease);
    --gdp-slow: 420ms var(--gdp-ease);

    --gdp-max: 1240px;
    --gdp-read: 74ch;

    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
    color: var(--gdp-txt);
    font-size: 16px;
    line-height: 1.62;
    -webkit-font-smoothing: antialiased;
}

body.theme-dark .gdp {
    --gdp-brand-ink:  #8DBEFF;
    --gdp-brand-lite: #7FB6FF;
    --gdp-brand-soft: rgba(54,128,237,.16);
    --gdp-brand-soft2:rgba(54,128,237,.09);
    --gdp-brand-line: rgba(54,128,237,.34);

    --gdp-green-soft:  rgba(12,166,120,.16);  --gdp-green-ink:  #6BE3B8;
    --gdp-amber-soft:  rgba(217,119,6,.16);   --gdp-amber-ink:  #F0B44E;
    --gdp-red-soft:    rgba(224,49,49,.16);   --gdp-red-ink:    #FF8A8A;
    --gdp-violet-soft: rgba(112,72,232,.18);  --gdp-violet-ink: #B79DFF;
    --gdp-cyan-soft:   rgba(11,165,199,.16);  --gdp-cyan-ink:   #5FD8F0;
    --gdp-rose-soft:   rgba(232,73,126,.16);  --gdp-rose-ink:   #FF9CBE;
    --gdp-teal-soft:   rgba(13,148,136,.16);  --gdp-teal-ink:   #5FD9CB;
    --gdp-indigo-soft: rgba(79,70,229,.18);   --gdp-indigo-ink: #A9A3FF;
    --gdp-blue-soft:   rgba(54,128,237,.16);  --gdp-blue-ink:   #8DBEFF;
    --gdp-slate-ink:   var(--aits-mut, #94A3B8);
    --gdp-ring:        0 0 0 3px rgba(96,164,245,.42);
}

/* ============================================================================
   §2  Neutralise the public layout chrome
   layouts.public wraps every route in a 9/12 + 3/12 grid with a #content-box
   that repeats the page title. This surface is full-bleed. Both the :has()
   form and a body-class fallback are given, for engines without :has().
   ========================================================================== */
body:has(.gdp) #content-box,
body:has(.gdp) .sidebars,
body:has(.gdp) .page-wrapper .breadcrumb { display: none !important; }

body:has(.gdp) .page-wrapper > .page-content > .container { max-width: 100% !important; padding: 0 !important; }
body:has(.gdp) .page-wrapper > .page-content > .container > .row { margin: 0 !important; }
body:has(.gdp) .page-wrapper > .page-content > .container > .row > div {
    flex: 0 0 100% !important; max-width: 100% !important; padding: 0 !important;
}

body.theme-dark:has(.gdp) .page-wrapper,
body.theme-dark:has(.gdp) .page-wrapper > .page-content { background: var(--aits-bg) !important; }

/* The mobile filter drawer locks the page behind it. */
body.gdp-locked { overflow: hidden; }

/* ============================================================================
   §3  Shell + layout
   ========================================================================== */
.gdp {
    position: relative;
    background: var(--gdp-bg);
    overflow-x: clip;
}
.gdp *, .gdp *::before, .gdp *::after { box-sizing: border-box; }
.gdp a { color: inherit; text-decoration: none; }

.gdp.is-mesh::before {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 620px;
    pointer-events: none;
    z-index: 0;
    background:
        radial-gradient(42rem 24rem at 10% -6%, rgba(54,128,237,.12), transparent 62%),
        radial-gradient(34rem 20rem at 90% 0%,  rgba(112,72,232,.09), transparent 60%);
}
body.theme-dark .gdp.is-mesh::before {
    background:
        radial-gradient(42rem 24rem at 10% -6%, rgba(54,128,237,.20), transparent 62%),
        radial-gradient(34rem 20rem at 90% 0%,  rgba(112,72,232,.15), transparent 60%);
}

.gdp-wrap {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: var(--seo-shell-max, 1600px);
    margin-inline: auto;
    padding-left: max(var(--seo-shell-pad, 24px), env(safe-area-inset-left));
    padding-right: max(var(--seo-shell-pad, 24px), env(safe-area-inset-right));
}

.gdp-sec { padding-block: clamp(36px, 5vw, 64px); }

.gdp-sec-head { margin-bottom: clamp(20px, 3vw, 32px); }
.gdp-sec-head.is-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.gdp-sr {
    position: absolute !important;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* ============================================================================
   §4  Typography
   ========================================================================== */
.gdp-h1 {
    margin: 0 0 14px;
    font-size: clamp(2rem, 4.2vw, 3.1rem);
    line-height: 1.1;
    font-weight: 850;
    letter-spacing: -.028em;
    color: var(--gdp-ink);
}
.gdp-h1.is-article { font-size: clamp(1.85rem, 3.4vw, 2.7rem); }
.gdp-h1.is-archive { font-size: clamp(1.6rem, 3vw, 2.3rem); margin-bottom: 8px; }




.gdp-h2 {
    display: flex;
    align-items: center;
    gap: 11px;
    margin: 0 0 8px;
    font-size: clamp(1.3rem, 2.3vw, 1.8rem);
    line-height: 1.24;
    font-weight: 800;
    letter-spacing: -.02em;
    color: var(--gdp-ink);
}
.gdp-h2 > i { color: var(--gdp-brand-ink); font-size: .86em; }

.gdp-lede {
    margin: 0;
    font-size: clamp(1rem, 1.3vw, 1.12rem);
    line-height: 1.68;
    color: var(--gdp-mut);
    max-width: 66ch;
}






.gdp-count { font-size: .86rem; font-weight: 650; color: var(--gdp-mut); }

.gdp-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: 0;
    padding: 0;
    color: var(--gdp-brand-ink);
    font: inherit;
    font-size: .9rem;
    font-weight: 650;
    cursor: pointer;
    transition: color var(--gdp-fast);
}
.gdp-link:hover { color: var(--gdp-brand); text-decoration: underline; }
.gdp-link i { font-size: .84em; }
.gdp-link.is-tiny { font-size: .76rem; }

/* ── Prose ─────────────────────────────────────────────────────────────── */
.gdp-prose { font-size: 1.045rem; line-height: 1.78; color: var(--gdp-txt); max-width: var(--gdp-read); }
.gdp-prose > * + * { margin-top: 1.05em; }
.gdp-prose h2, .gdp-prose h3, .gdp-prose h4 {
    color: var(--gdp-ink);
    font-weight: 750;
    line-height: 1.3;
    letter-spacing: -.015em;
    margin-top: 1.7em;
    scroll-margin-top: 92px;
}
.gdp-prose h2 { font-size: 1.4rem; }
.gdp-prose h3 { font-size: 1.16rem; }
.gdp-prose a { color: var(--gdp-brand-ink); text-decoration: underline; text-underline-offset: 2px; }
.gdp-prose a:hover { color: var(--gdp-brand); }
.gdp-prose ul, .gdp-prose ol { padding-inline-start: 1.35em; }
.gdp-prose li + li { margin-top: .4em; }
.gdp-prose img { max-width: 100%; height: auto; border-radius: var(--gdp-r-md); }
.gdp-prose blockquote {
    margin: 1.4em 0;
    padding: 2px 0 2px 18px;
    border-inline-start: 3px solid var(--gdp-brand);
    color: var(--gdp-ink-soft);
    font-style: italic;
}
.gdp-prose code {
    padding: 2px 6px;
    border-radius: var(--gdp-r-xs);
    background: var(--gdp-card-3);
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .89em;
    color: var(--gdp-violet-ink);
}
.gdp-prose table { width: 100%; border-collapse: collapse; font-size: .95rem; }
.gdp-prose th, .gdp-prose td { padding: 9px 12px; border: 1px solid var(--gdp-line); text-align: start; }
.gdp-prose th { background: var(--gdp-card-2); font-weight: 700; color: var(--gdp-ink); }

/* ============================================================================
   §5  Buttons, chips, badges
   ========================================================================== */
.gdp-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 10px 18px;
    border-radius: var(--gdp-r);
    border: 1px solid transparent;
    background: none;
    font-family: inherit;
    font-size: .93rem;
    font-weight: 700;
    line-height: 1.25;
    cursor: pointer;
    white-space: nowrap;
    transition: transform var(--gdp-fast), box-shadow var(--gdp-mid),
                background var(--gdp-mid), border-color var(--gdp-mid), color var(--gdp-mid);
}
.gdp-btn i { font-size: .92em; }



.gdp-btn-primary { background: var(--gdp-grad); color: #fff; box-shadow: var(--gdp-sh-brand); }
.gdp-btn-ghost   { background: var(--gdp-card); border-color: var(--gdp-line-strong); color: var(--gdp-ink); }



@media (hover: hover) {
    .gdp-btn-primary:hover { transform: translateY(-2px); box-shadow: var(--gdp-sh-lg); color: #fff; }
    .gdp-btn-ghost:hover   { border-color: var(--gdp-brand); color: var(--gdp-brand-ink); background: var(--gdp-brand-soft2); }
    
    
}

.gdp-btn:focus-visible,
.gdp-chip:focus-visible,
.gdp-link:focus-visible,
.gdp-save:focus-visible,
.gdp input:focus-visible,
.gdp select:focus-visible,
.gdp textarea:focus-visible,
.gdp a:focus-visible { outline: 2px solid var(--gdp-brand); outline-offset: 2px; border-radius: var(--gdp-r-xs); }

.gdp-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border-radius: 999px;
    border: 1px solid var(--gdp-line);
    background: var(--gdp-card);
    color: var(--gdp-txt);
    font-size: .81rem;
    font-weight: 620;
    cursor: pointer;
    transition: all var(--gdp-fast);
}
.gdp-chip i { font-size: .82em; opacity: .8; }
.gdp-chip b {
    padding: 0 6px;
    border-radius: 999px;
    background: var(--gdp-card-3);
    font-size: .74em;
    font-weight: 750;
    color: var(--gdp-mut);
}
.gdp-chip.is-on { background: var(--gdp-brand-solid); border-color: var(--gdp-brand-solid); color: #fff; }
.gdp-chip.is-on b { background: rgba(255,255,255,.22); color: #fff; }
.gdp-chip.is-static { cursor: default; background: var(--gdp-card-3); }
.gdp-chip.is-slate { background: var(--gdp-slate-soft); color: var(--gdp-slate-ink); border-color: transparent; }
@media (hover: hover) {
    .gdp-chip:not(.is-static):hover { border-color: var(--gdp-brand); color: var(--gdp-brand-ink); }
    .gdp-chip.is-on:hover { color: #fff; }
}



/* ── Difficulty badge ──────────────────────────────────────────────────
   Colour is never the only signal: icon + words + pips all read alone. */
.gdp-badge {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 5px 11px;
    border-radius: 999px;
    background: var(--gdp-slate-soft);
    color: var(--gdp-slate-ink);
    font-size: .8rem;
    font-weight: 720;
    white-space: nowrap;
}
.gdp-badge.is-sm { padding: 3px 9px; font-size: .715rem; gap: 5px; }
.gdp-badge i { font-size: .9em; }
.gdp-badge.is-green  { background: var(--gdp-green-soft);  color: var(--gdp-green-ink); }
.gdp-badge.is-blue   { background: var(--gdp-blue-soft);   color: var(--gdp-blue-ink); }
.gdp-badge.is-violet { background: var(--gdp-violet-soft); color: var(--gdp-violet-ink); }
.gdp-badge.is-amber  { background: var(--gdp-amber-soft);  color: var(--gdp-amber-ink); }
.gdp-badge.is-red    { background: var(--gdp-red-soft);    color: var(--gdp-red-ink); }
.gdp-badge.is-cyan   { background: var(--gdp-cyan-soft);   color: var(--gdp-cyan-ink); }
.gdp-badge.is-teal   { background: var(--gdp-teal-soft);   color: var(--gdp-teal-ink); }
.gdp-badge.is-rose   { background: var(--gdp-rose-soft);   color: var(--gdp-rose-ink); }

.gdp-pips { display: inline-flex; gap: 2px; align-items: center; }
.gdp-pips i {
    width: 5px; height: 5px;
    border-radius: 50%;
    background: currentColor;
    opacity: .26;
}
.gdp-pips i.is-on { opacity: 1; }
.gdp-badge.is-sm .gdp-pips i { width: 4px; height: 4px; }

.gdp-flag {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(15,23,42,.82);
    color: #fff;
    font-size: .7rem;
    font-weight: 730;
    -webkit-backdrop-filter: blur(6px);
    backdrop-filter: blur(6px);
}
.gdp-flag.is-amber { background: rgba(168,93,6,.94); }
.gdp-flag.is-green { background: rgba(10,127,92,.94); }
.gdp-flag.is-blue  { background: rgba(32,96,192,.94); }

/* ============================================================================
   §6  Breadcrumbs + progress
   ========================================================================== */
.gdp-crumbs { padding-block: 14px 0; font-size: .82rem; color: var(--gdp-mut); }
.gdp-crumbs ol { display: flex; flex-wrap: wrap; gap: 7px; list-style: none; margin: 0; padding: 0; }
.gdp-crumbs li + li::before { content: "/"; margin-inline-end: 7px; opacity: .5; }
.gdp-crumbs a { color: var(--gdp-mut); }
.gdp-crumbs a:hover { color: var(--gdp-brand-ink); text-decoration: underline; }
.gdp-crumbs li[aria-current] { color: var(--gdp-ink); font-weight: 620; }

.gdp-progress {
    position: fixed;
    inset: 0 0 auto 0;
    height: 3px;
    z-index: 60;
    background: transparent;
    pointer-events: none;
}
.gdp-progress span { display: block; height: 100%; width: 0; background: var(--gdp-grad); transition: width .12s linear; }

.gdp-preview-bar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    padding: 9px 16px;
    background: var(--gdp-amber-soft);
    color: var(--gdp-amber-ink);
    font-size: .85rem;
    font-weight: 650;
}

/* ============================================================================
   §7  Hero
   ========================================================================== */







































/* ============================================================================
   §8  Cards + grids
   ========================================================================== */
.gdp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(min(290px, 100%), 1fr));
    gap: 20px;
}








.gdp-card {
    display: flex;
    flex-direction: column;
    /* min-width:0 is load-bearing inside a grid: without it a long unbroken
       title pushes the card past its track and the page scrolls sideways. */
    min-width: 0;
    border-radius: var(--gdp-r-lg);
    border: 1px solid var(--gdp-line);
    background: var(--gdp-card);
    overflow: hidden;
    transition: transform var(--gdp-mid), box-shadow var(--gdp-mid), border-color var(--gdp-mid);
}
.gdp.card-raised .gdp-card { box-shadow: var(--gdp-sh-sm); }
.gdp.card-flat   .gdp-card { box-shadow: none; }
.gdp.card-glass  .gdp-card {
    background: color-mix(in srgb, var(--gdp-card) 78%, transparent);
    -webkit-backdrop-filter: saturate(160%) blur(12px);
    backdrop-filter: saturate(160%) blur(12px);
}
@supports not (background: color-mix(in srgb, red 50%, transparent)) {
    .gdp.card-glass .gdp-card { background: var(--gdp-card); backdrop-filter: none; }
}

@media (hover: hover) {
    .gdp-card:hover { transform: translateY(-3px); box-shadow: var(--gdp-sh); border-color: var(--gdp-brand-line); }
}

.gdp-card-media {
    position: relative;
    display: block;
    aspect-ratio: 16 / 9;
    background: var(--gdp-card-3);
    overflow: hidden;
}
.gdp-card-media img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform var(--gdp-slow); }
@media (hover: hover) { .gdp-card:hover .gdp-card-media img { transform: scale(1.04); } }

.gdp-card-fallback {
    display: grid;
    place-items: center;
    width: 100%; height: 100%;
    background: var(--gdp-brand-soft);
    color: var(--gdp-brand-ink);
    font-size: 1.9rem;
    font-weight: 850;
}
.gdp-card-flags { position: absolute; top: 10px; inset-inline-start: 10px; display: flex; gap: 6px; flex-wrap: wrap; }

.gdp-card-body { display: flex; flex-direction: column; gap: 10px; padding: 16px 17px; flex: 1 1 auto; min-width: 0; }

.gdp-card-top { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.gdp-card-cat {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: .765rem;
    font-weight: 700;
    color: var(--gdp-brand-ink);
    text-transform: uppercase;
    letter-spacing: .04em;
}
.gdp-card-cat:hover { text-decoration: underline; }
.gdp-card-top .gdp-badge { margin-inline-start: auto; }

.gdp-card-title { margin: 0; font-size: 1.06rem; line-height: 1.35; font-weight: 750; letter-spacing: -.014em; color: var(--gdp-ink); }
.gdp-card-title a:hover { color: var(--gdp-brand-ink); }
.gdp-card.is-lead .gdp-card-title { font-size: 1.36rem; }

.gdp-card-text { margin: 0; font-size: .89rem; line-height: 1.62; color: var(--gdp-mut); }

.gdp-card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    font-size: .765rem;
    color: var(--gdp-mut);
    margin-top: auto;
}
.gdp-card-meta i { margin-inline-end: 4px; opacity: .75; }

.gdp-card-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding-top: 11px;
    border-top: 1px solid var(--gdp-line-soft);
}
.gdp-card-author { display: inline-flex; align-items: center; gap: 8px; font-size: .8rem; color: var(--gdp-txt); min-width: 0; }
.gdp-card-author img,
.gdp-card-avatar {
    width: 24px; height: 24px;
    flex: none;
    border-radius: 50%;
    object-fit: cover;
    display: grid;
    place-items: center;
    background: var(--gdp-brand-soft);
    color: var(--gdp-brand-ink);
    font-size: .7rem;
    font-weight: 750;
}
.gdp-card-author span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.gdp-card-author:hover { color: var(--gdp-brand-ink); }

.gdp-save {
    display: grid;
    place-items: center;
    width: 32px; height: 32px;
    flex: none;
    border: 1px solid var(--gdp-line);
    border-radius: var(--gdp-r-sm);
    background: var(--gdp-card);
    color: var(--gdp-mut);
    cursor: pointer;
    transition: all var(--gdp-fast);
}
.gdp-save.is-on { background: var(--gdp-brand-soft); border-color: var(--gdp-brand-line); color: var(--gdp-brand-ink); }
@media (hover: hover) { .gdp-save:hover { border-color: var(--gdp-brand); color: var(--gdp-brand-ink); } }

/* List variant — a horizontal card. */
.gdp-card.is-list { flex-direction: row; align-items: stretch; }
.gdp-card.is-list .gdp-card-media { width: 148px; flex: none; aspect-ratio: 4 / 3; }
.gdp-card.is-list .gdp-card-body { padding: 13px 15px; gap: 7px; }
.gdp-card.is-list .gdp-card-title { font-size: .98rem; }
.gdp-card.is-list .gdp-card-text { display: none; }

/* ============================================================================
   §9  Category + level grids
   ========================================================================== */






















.gdp-level .gdp-pips { margin-top: auto; padding-top: 10px; color: var(--gdp-brand); }


/* ============================================================================
   §10  Filters
   ========================================================================== */










































/* ============================================================================
   §11  Article layout
   ========================================================================== */
.gdp-gh { padding-block: clamp(20px, 3vw, 34px) 0; }
.gdp-gh-top { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin-bottom: 14px; }
.gdp-gh-cat {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: .8rem;
    font-weight: 730;
    color: var(--gdp-brand-ink);
    text-transform: uppercase;
    letter-spacing: .04em;
}
.gdp-gh-cat:hover { text-decoration: underline; }

.gdp-gh-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-top: 20px;
    font-size: .84rem;
    color: var(--gdp-mut);
}
.gdp-gh-meta i { margin-inline-end: 5px; opacity: .78; }
.gdp-gh-dot { width: 4px; height: 4px; border-radius: 50%; background: var(--gdp-line-strong); }

.gdp-byline { display: inline-flex; align-items: center; gap: 10px; }
.gdp-byline img,
.gdp-avatar {
    width: 36px; height: 36px;
    flex: none;
    border-radius: 50%;
    object-fit: cover;
    display: grid;
    place-items: center;
    background: var(--gdp-brand-soft);
    color: var(--gdp-brand-ink);
    font-weight: 800;
}
.gdp-byline span { display: flex; flex-direction: column; line-height: 1.3; }
.gdp-byline i { font-style: normal; font-size: .72rem; color: var(--gdp-faint); }
.gdp-byline b { font-size: .88rem; color: var(--gdp-ink); font-weight: 700; }
.gdp-byline:hover b { color: var(--gdp-brand-ink); }

.gdp-gh-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 20px; }
.gdp-save-btn.is-on { border-color: var(--gdp-brand); background: var(--gdp-brand-soft); color: var(--gdp-brand-ink); }

.gdp-gh-media { margin: 24px 0 0; }
.gdp-gh-media img { width: 100%; height: auto; border-radius: var(--gdp-r-lg); display: block; }

.gdp-layout {
    display: grid;
    grid-template-columns: minmax(0, 260px) minmax(0, 1fr) minmax(0, 290px);
    gap: 34px;
    align-items: start;
    padding-block: clamp(26px, 4vw, 44px);
}

.gdp-article { min-width: 0; }

/* ── Table of contents ─────────────────────────────────────────────────── */
.gdp-toc { min-width: 0; }
.gdp-toc.is-sticky { position: sticky; top: 78px; max-height: calc(100vh - 100px); overflow-y: auto; scrollbar-width: thin; }
.gdp-toc-h {
    margin: 0 0 12px;
    font-size: .74rem;
    font-weight: 780;
    letter-spacing: .09em;
    text-transform: uppercase;
    color: var(--gdp-faint);
}

.gdp-toc-progress { margin-bottom: 14px; }
.gdp-toc-bar { height: 5px; border-radius: 999px; background: var(--gdp-card-3); overflow: hidden; }
.gdp-toc-bar span { display: block; height: 100%; border-radius: 999px; background: var(--gdp-grad); transition: width var(--gdp-slow); }
.gdp-toc-progress small { display: inline-block; margin-top: 6px; font-size: .74rem; color: var(--gdp-mut); }
.gdp-toc-progress .gdp-link { margin-inline-start: 8px; }

.gdp-toc-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 1px; }
.gdp-toc-list a {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 7px 10px;
    border-radius: var(--gdp-r-sm);
    font-size: .855rem;
    line-height: 1.4;
    color: var(--gdp-mut);
    border-inline-start: 2px solid transparent;
    transition: all var(--gdp-fast);
}
.gdp-toc-list a:hover { background: var(--gdp-card-2); color: var(--gdp-ink); }
.gdp-toc-list a.is-on {
    background: var(--gdp-brand-soft2);
    border-inline-start-color: var(--gdp-brand);
    color: var(--gdp-brand-ink);
    font-weight: 650;
}
.gdp-toc-n {
    display: grid;
    place-items: center;
    width: 21px; height: 21px;
    flex: none;
    border-radius: 50%;
    background: var(--gdp-card-3);
    color: var(--gdp-mut);
    font-size: .7rem;
    font-weight: 750;
}
.gdp-toc-n.is-done { background: var(--gdp-green-solid); color: #fff; }
.gdp-toc-n.is-aside { background: transparent; color: var(--gdp-faint); }
.gdp-toc-t { flex: 1 1 auto; min-width: 0; }
.gdp-toc-m { flex: none; font-size: .7rem; color: var(--gdp-faint); }
.gdp-toc-sub { list-style: none; margin: 0; padding-inline-start: 31px; }
.gdp-toc-sub a { font-size: .8rem; padding: 4px 8px; }

/* ── Prerequisite / outcome cards ──────────────────────────────────────── */
.gdp-precards { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(260px, 100%), 1fr)); gap: 14px; margin-bottom: 30px; }
.gdp-precard {
    padding: 17px 19px;
    border-radius: var(--gdp-r-md);
    border: 1px solid var(--gdp-line);
    background: var(--gdp-card-2);
}
.gdp-precard.is-outcome { background: var(--gdp-green-soft); border-color: color-mix(in srgb, var(--gdp-green) 30%, transparent); }
@supports not (background: color-mix(in srgb, red 50%, transparent)) {
    .gdp-precard.is-outcome { border-color: var(--gdp-line); }
}
.gdp-precard h2 {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 10px;
    font-size: .84rem;
    font-weight: 760;
    letter-spacing: .03em;
    text-transform: uppercase;
    color: var(--gdp-ink);
}
.gdp-precard.is-outcome h2 { color: var(--gdp-green-ink); }
.gdp-precard ul { margin: 0; padding-inline-start: 1.1em; font-size: .9rem; line-height: 1.65; color: var(--gdp-txt); }
.gdp-precard li + li { margin-top: .34em; }

.gdp-intro { font-size: 1.08rem; }

/* ============================================================================
   §12  Steps
   ========================================================================== */
.gdp-steps { display: flex; flex-direction: column; }

.gdp-step {
    position: relative;
    display: grid;
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 16px;
    padding-block: 26px;
    scroll-margin-top: 92px;
}
.gdp-step + .gdp-step { border-top: 1px solid var(--gdp-line-soft); }

/* The connector rail. Runs between dots, not past the last one. */
.gdp-step-rail { position: relative; }
.gdp-step:not(:last-child) .gdp-step-rail::after {
    content: "";
    position: absolute;
    top: 40px; bottom: -26px;
    inset-inline-start: 17px;
    width: 2px;
    background: var(--gdp-line);
}
.gdp-step.is-done .gdp-step-rail::after { background: var(--gdp-green-soft); }

.gdp-step-dot {
    display: grid;
    place-items: center;
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--gdp-brand-solid);
    color: #fff;
    font-size: .93rem;
    font-weight: 800;
    box-shadow: 0 0 0 4px var(--gdp-brand-soft);
}
.gdp-step.is-done .gdp-step-dot { background: var(--gdp-green-solid); box-shadow: 0 0 0 4px var(--gdp-green-soft); }
.gdp-step.kind-note .gdp-step-dot,
.gdp-step.kind-tip .gdp-step-dot,
.gdp-step.kind-warning .gdp-step-dot,
.gdp-step.kind-code .gdp-step-dot,
.gdp-step.kind-video .gdp-step-dot { background: var(--gdp-card-3); color: var(--gdp-mut); box-shadow: none; }
.gdp-step.tone-amber .gdp-step-dot { background: var(--gdp-amber-soft); color: var(--gdp-amber-ink); }
.gdp-step.tone-green .gdp-step-dot { background: var(--gdp-green-soft); color: var(--gdp-green-ink); }
.gdp-step.tone-violet .gdp-step-dot { background: var(--gdp-violet-soft); color: var(--gdp-violet-ink); }
.gdp-step.tone-rose .gdp-step-dot { background: var(--gdp-rose-soft); color: var(--gdp-rose-ink); }

.gdp-step-body { min-width: 0; }
.gdp-step-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; flex-wrap: wrap; margin-bottom: 10px; }

.gdp-step-title {
    position: relative;
    margin: 0;
    font-size: 1.28rem;
    line-height: 1.34;
    font-weight: 780;
    letter-spacing: -.018em;
    color: var(--gdp-ink);
    flex: 1 1 260px;
    min-width: 0;
}
.gdp-step.is-done .gdp-step-title { color: var(--gdp-mut); }

/* The anchor is quiet but focusable — a keyboard user can reach it. */
.gdp-anchor {
    margin-inline-end: 7px;
    color: var(--gdp-faint);
    font-size: .62em;
    opacity: 0;
    transition: opacity var(--gdp-fast);
}
.gdp-step:hover .gdp-anchor,
.gdp-anchor:focus-visible { opacity: 1; }
@media (hover: none) { .gdp-anchor { opacity: .5; } }

.gdp-step-kind {
    display: inline-block;
    margin-inline-end: 8px;
    padding: 2px 8px;
    border-radius: 999px;
    background: var(--gdp-card-3);
    color: var(--gdp-mut);
    font-size: .62em;
    font-weight: 750;
    letter-spacing: .05em;
    text-transform: uppercase;
    vertical-align: middle;
}

.gdp-step-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; flex: none; }
.gdp-step-time { display: inline-flex; align-items: center; gap: 5px; font-size: .78rem; color: var(--gdp-mut); }

/* A button, not a checkbox input — styling the input itself is what makes the
   tick invisible in dark mode. */
.gdp-step-check {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 5px 11px;
    border-radius: 999px;
    border: 1px solid var(--gdp-line);
    background: var(--gdp-card);
    color: var(--gdp-mut);
    font-family: inherit;
    font-size: .78rem;
    font-weight: 650;
    cursor: pointer;
    transition: all var(--gdp-fast);
}
.gdp-step-box {
    display: grid;
    place-items: center;
    width: 16px; height: 16px;
    border-radius: 4px;
    border: 1.5px solid var(--gdp-line-strong);
    background: var(--gdp-card);
    color: transparent;
    font-size: .58rem;
}
.gdp-step-check.is-on { border-color: var(--gdp-green); background: var(--gdp-green-soft); color: var(--gdp-green-ink); }
.gdp-step-check.is-on .gdp-step-box { background: var(--gdp-green-solid); border-color: var(--gdp-green-solid); color: #fff; }
@media (hover: hover) { .gdp-step-check:hover { border-color: var(--gdp-green); color: var(--gdp-green-ink); } }

.gdp-step-sum { margin: 0 0 12px; font-size: .98rem; line-height: 1.62; color: var(--gdp-ink-soft); font-weight: 500; }

.gdp-step-fig { margin: 18px 0 0; }
.gdp-step-fig img { width: 100%; height: auto; border-radius: var(--gdp-r-md); border: 1px solid var(--gdp-line); display: block; }
.gdp-step-fig figcaption { margin-top: 8px; font-size: .8rem; color: var(--gdp-mut); }

.gdp-step-video { margin-top: 16px; }
.gdp-step-video a {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 10px 16px;
    border-radius: var(--gdp-r);
    background: var(--gdp-rose-soft);
    color: var(--gdp-rose-ink);
    font-size: .88rem;
    font-weight: 700;
}

.gdp-step-divider { border: 0; border-top: 1px dashed var(--gdp-line-strong); margin: 12px 0; }

.gdp-substeps { margin-top: 20px; display: flex; flex-direction: column; gap: 16px; }
.gdp-substep { padding-inline-start: 16px; border-inline-start: 2px solid var(--gdp-line); }
.gdp-substep h3 { margin: 0 0 7px; font-size: 1.02rem; font-weight: 730; color: var(--gdp-ink); }

/* ── Code ──────────────────────────────────────────────────────────────── */
.gdp-code {
    margin: 18px 0 0;
    border-radius: var(--gdp-r-md);
    border: 1px solid var(--gdp-line);
    overflow: hidden;
    background: var(--gdp-card-2);
}
.gdp-code figcaption {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 13px;
    background: var(--gdp-card-3);
    border-bottom: 1px solid var(--gdp-line);
    font-size: .76rem;
    font-weight: 650;
    color: var(--gdp-mut);
}
.gdp-code figcaption > span { display: inline-flex; align-items: center; gap: 7px; }
.gdp-code-copy {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 3px 9px;
    border: 1px solid var(--gdp-line-strong);
    border-radius: var(--gdp-r-xs);
    background: var(--gdp-card);
    color: var(--gdp-txt);
    font: inherit;
    font-size: .74rem;
    cursor: pointer;
    transition: all var(--gdp-fast);
}
.gdp-code-copy.is-done { background: var(--gdp-green-solid); border-color: transparent; color: #fff; }
@media (hover: hover) { .gdp-code-copy:hover { border-color: var(--gdp-brand); color: var(--gdp-brand-ink); } }
.gdp-code pre {
    margin: 0;
    padding: 15px;
    overflow-x: auto;
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-size: .86rem;
    line-height: 1.65;
    color: var(--gdp-ink);
    tab-size: 2;
}

/* ── Callouts ──────────────────────────────────────────────────────────── */
.gdp-callout {
    margin: 18px 0 0;
    padding: 14px 17px;
    border-radius: var(--gdp-r-md);
    border-inline-start: 3px solid var(--gdp-brand);
    background: var(--gdp-brand-soft2);
}
.gdp-callout b { display: flex; align-items: center; gap: 8px; font-size: .82rem; font-weight: 760; color: var(--gdp-ink); margin-bottom: 7px; }
.gdp-callout ul { margin: 0; padding-inline-start: 1.15em; font-size: .9rem; line-height: 1.62; color: var(--gdp-txt); }
.gdp-callout li + li { margin-top: .3em; }
.gdp-callout.is-tip  { border-inline-start-color: var(--gdp-green); background: var(--gdp-green-soft); }
.gdp-callout.is-tip b { color: var(--gdp-green-ink); }
.gdp-callout.is-warn { border-inline-start-color: var(--gdp-amber); background: var(--gdp-amber-soft); }
.gdp-callout.is-warn b { color: var(--gdp-amber-ink); }

/* ============================================================================
   §13  Blocks, resources, FAQ, feedback, author
   ========================================================================== */
.gdp-block { margin-top: 40px; scroll-margin-top: 92px; }
.gdp-block-h {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 0 16px;
    font-size: 1.28rem;
    font-weight: 790;
    letter-spacing: -.018em;
    color: var(--gdp-ink);
}
.gdp-block-h i { color: var(--gdp-brand-ink); font-size: .86em; }

.gdp-resources { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
.gdp-resources a {
    display: flex;
    align-items: center;
    gap: 13px;
    padding: 13px 15px;
    border-radius: var(--gdp-r-md);
    border: 1px solid var(--gdp-line);
    background: var(--gdp-card);
    transition: all var(--gdp-fast);
}
.gdp-res-ico {
    display: grid;
    place-items: center;
    width: 38px; height: 38px;
    flex: none;
    border-radius: var(--gdp-r-sm);
    background: var(--gdp-brand-soft);
    color: var(--gdp-brand-ink);
}
.gdp-res-body { display: flex; flex-direction: column; min-width: 0; flex: 1 1 auto; }
.gdp-res-body b { font-size: .92rem; font-weight: 700; color: var(--gdp-ink); }
.gdp-res-body i { font-style: normal; font-size: .8rem; color: var(--gdp-mut); }
.gdp-res-kind {
    flex: none;
    padding: 3px 9px;
    border-radius: 999px;
    background: var(--gdp-card-3);
    font-size: .72rem;
    font-weight: 700;
    color: var(--gdp-mut);
}
@media (hover: hover) { .gdp-resources a:hover { border-color: var(--gdp-brand); background: var(--gdp-brand-soft2); } }

.gdp-acc { display: flex; flex-direction: column; gap: 9px; }
.gdp-acc-item {
    border: 1px solid var(--gdp-line);
    border-radius: var(--gdp-r-md);
    background: var(--gdp-card);
    overflow: hidden;
    transition: border-color var(--gdp-mid);
}
.gdp-acc-item.is-open { border-color: var(--gdp-brand-line); }
.gdp-acc-head {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 14px 17px;
    border: 0;
    background: none;
    text-align: start;
    font-family: inherit;
    font-size: .95rem;
    font-weight: 700;
    color: var(--gdp-ink);
    cursor: pointer;
}
.gdp-acc-head > span { flex: 1 1 auto; min-width: 0; }
.gdp-acc-head i { flex: none; font-size: .78rem; color: var(--gdp-mut); transition: transform var(--gdp-mid); }
.gdp-acc-item.is-open .gdp-acc-head i { transform: rotate(180deg); }
.gdp-acc-body { padding: 0 17px 16px; font-size: .93rem; line-height: 1.72; color: var(--gdp-txt); }

.gdp-feedback {
    margin-top: 44px;
    padding: 22px;
    border-radius: var(--gdp-r-lg);
    border: 1px solid var(--gdp-line);
    background: var(--gdp-card-2);
}
.gdp-fb-h { margin: 0 0 14px; font-size: 1.05rem; font-weight: 750; color: var(--gdp-ink); }
.gdp-fb-buttons { display: flex; gap: 10px; flex-wrap: wrap; }
.gdp-fb-score { margin: 14px 0 0; font-size: .82rem; color: var(--gdp-mut); }
.gdp-fb-reasons { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 14px; }
.gdp-fb-reason {
    padding: 6px 13px;
    border-radius: 999px;
    border: 1px solid var(--gdp-line);
    background: var(--gdp-card);
    color: var(--gdp-txt);
    font: inherit;
    font-size: .83rem;
    cursor: pointer;
    transition: all var(--gdp-fast);
}
.gdp-fb-reason.is-on { background: var(--gdp-brand-solid); border-color: var(--gdp-brand-solid); color: #fff; }
.gdp-fb-actions { display: flex; gap: 9px; margin-top: 12px; flex-wrap: wrap; }
.gdp-fb-thanks { display: flex; align-items: center; gap: 11px; color: var(--gdp-green-ink); font-weight: 650; }
.gdp-fb-thanks p { margin: 0; }

.gdp-input {
    width: 100%;
    padding: 10px 13px;
    border-radius: var(--gdp-r);
    border: 1px solid var(--gdp-line-strong);
    background: var(--gdp-card);
    color: var(--gdp-ink);
    font-family: inherit;
    font-size: .92rem;
    resize: vertical;
}
.gdp-input:focus { outline: none; border-color: var(--gdp-brand); box-shadow: var(--gdp-ring); }

.gdp-authorbox {
    display: flex;
    gap: 18px;
    align-items: flex-start;
    margin-top: 40px;
    padding: 22px;
    border-radius: var(--gdp-r-lg);
    border: 1px solid var(--gdp-line);
    background: var(--gdp-card);
}
.gdp-authorbox-pic { flex: none; }
.gdp-authorbox-pic img,
.gdp-authorbox-pic span {
    display: grid;
    place-items: center;
    width: 64px; height: 64px;
    border-radius: 50%;
    object-fit: cover;
    background: var(--gdp-brand-soft);
    color: var(--gdp-brand-ink);
    font-size: 1.5rem;
    font-weight: 800;
}
.gdp-authorbox-body { min-width: 0; }
.gdp-authorbox-name { display: flex; align-items: center; gap: 8px; margin: 0 0 4px; font-size: 1.06rem; font-weight: 760; color: var(--gdp-ink); }
.gdp-authorbox-role { margin: 0 0 8px; font-size: .82rem; color: var(--gdp-brand-ink); font-weight: 620; }
.gdp-authorbox-bio  { margin: 0 0 12px; font-size: .9rem; line-height: 1.65; color: var(--gdp-mut); }
.gdp-authorbox-foot { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.gdp-authorbox-socials { display: flex; gap: 8px; }
.gdp-authorbox-socials a {
    display: grid;
    place-items: center;
    width: 30px; height: 30px;
    border-radius: 50%;
    background: var(--gdp-card-3);
    color: var(--gdp-mut);
    font-size: .82rem;
    transition: all var(--gdp-fast);
}
.gdp-authorbox-socials a:hover { background: var(--gdp-brand-soft); color: var(--gdp-brand-ink); }

/* ── Share ─────────────────────────────────────────────────────────────── */
.gdp-share { display: flex; align-items: center; gap: 11px; flex-wrap: wrap; }
.gdp-share-lbl { display: inline-flex; align-items: center; gap: 7px; font-size: .82rem; font-weight: 650; color: var(--gdp-mut); }
.gdp-share-row { display: flex; gap: 7px; flex-wrap: wrap; }
.gdp-share-btn {
    display: grid;
    place-items: center;
    width: 34px; height: 34px;
    border: 1px solid var(--gdp-line);
    border-radius: var(--gdp-r-sm);
    background: var(--gdp-card);
    color: var(--gdp-mut);
    font-size: .86rem;
    cursor: pointer;
    transition: all var(--gdp-fast);
}
@media (hover: hover) {
    .gdp-share-btn:hover { border-color: var(--gdp-brand); color: var(--gdp-brand-ink); background: var(--gdp-brand-soft2); }
}
.gdp-share-btn.is-done { background: var(--gdp-green-solid); border-color: transparent; color: #fff; }

/* The native sheet button only exists where the browser has one, so it is
   hidden by default and revealed by JS capability rather than shown dead. */
.gdp-share-btn.is-native { display: none; }
@supports (-webkit-touch-callout: none) { .gdp-share-btn.is-native { display: grid; } }

/* ============================================================================
   §14  Sidebar
   ========================================================================== */
.gdp-side { display: flex; flex-direction: column; gap: 16px; min-width: 0; position: sticky; top: 78px; }

.gdp-side-card {
    padding: 17px;
    border-radius: var(--gdp-r-lg);
    border: 1px solid var(--gdp-line);
    background: var(--gdp-card);
}
.gdp-side-h {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 0 0 13px;
    font-size: .78rem;
    font-weight: 780;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--gdp-faint);
}
.gdp-side-h i { color: var(--gdp-brand-ink); font-size: 1.05em; }

.gdp-side-links { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.gdp-side-links a {
    display: flex;
    align-items: center;
    gap: 11px;
    padding: 9px 10px;
    border-radius: var(--gdp-r-sm);
    transition: background var(--gdp-fast);
}
.gdp-side-links a:hover { background: var(--gdp-card-2); }
.gdp-side-links img,
.gdp-side-ico {
    width: 32px; height: 32px;
    flex: none;
    border-radius: var(--gdp-r-xs);
    object-fit: cover;
    display: grid;
    place-items: center;
    background: var(--gdp-brand-soft);
    color: var(--gdp-brand-ink);
    font-size: .82rem;
}
.gdp-side-body { display: flex; flex-direction: column; min-width: 0; flex: 1 1 auto; }
.gdp-side-body b { font-size: .87rem; font-weight: 680; color: var(--gdp-ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.gdp-side-body i { font-style: normal; font-size: .76rem; color: var(--gdp-mut); }
.gdp-side-ext { flex: none; font-size: .7rem; color: var(--gdp-faint); }

.gdp-side-meta { margin: 0; display: flex; flex-direction: column; gap: 0; }
.gdp-side-meta > div {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    padding: 7px 0;
    border-bottom: 1px solid var(--gdp-line-soft);
}
.gdp-side-meta > div:last-child { border-bottom: 0; }
.gdp-side-meta dt { font-size: .8rem; color: var(--gdp-mut); }
.gdp-side-meta dd { margin: 0; font-size: .85rem; font-weight: 650; color: var(--gdp-ink); text-align: end; }

.gdp-side-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 13px; }
.gdp-side-tags .gdp-chip { font-size: .75rem; padding: 3px 9px; }

.gdp-side-popular { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 11px; counter-reset: pop; }
.gdp-side-popular li { display: flex; gap: 11px; align-items: flex-start; }
.gdp-side-rank {
    flex: none;
    font-size: 1.05rem;
    font-weight: 850;
    color: var(--gdp-line-strong);
    line-height: 1.2;
    min-width: 18px;
}
.gdp-side-popular a { display: flex; flex-direction: column; min-width: 0; }
.gdp-side-popular b { font-size: .85rem; font-weight: 660; color: var(--gdp-ink); line-height: 1.4; }
.gdp-side-popular i { font-style: normal; font-size: .74rem; color: var(--gdp-mut); }
.gdp-side-popular a:hover b { color: var(--gdp-brand-ink); }

/* ============================================================================
   §15  Archive + saved
   ========================================================================== */



























/* ============================================================================
   §16  Newsletter + CTA bands
   ========================================================================== */














/* ============================================================================
   §17  Responsive
   ========================================================================== */
@media (max-width: 1180px) {
    .gdp-layout { grid-template-columns: minmax(0, 240px) minmax(0, 1fr); }
    .gdp-side { grid-column: 1 / -1; position: static; flex-direction: row; flex-wrap: wrap; }
    .gdp-side-card { flex: 1 1 280px; }
}



@media (max-width: 900px) {
    .gdp-layout { grid-template-columns: 1fr; }
    .gdp-toc { order: -1; position: static; max-height: none; }
    .gdp-toc.is-sticky { position: static; }
    .gdp-toc-list { max-height: 260px; overflow-y: auto; }
}

@media (max-width: 768px) {

    /* The filter bar collapses behind a toggle. A sticky bar that fills half a
       phone screen is worse than no filters at all. */
    
    
    
    
    

    .gdp-step { grid-template-columns: 30px minmax(0, 1fr); gap: 12px; }
    .gdp-step-dot { width: 28px; height: 28px; font-size: .8rem; }
    .gdp-step:not(:last-child) .gdp-step-rail::after { inset-inline-start: 13px; top: 32px; }
    .gdp-step-title { font-size: 1.12rem; }

    .gdp-card.is-list { flex-direction: column; }
    .gdp-card.is-list .gdp-card-media { width: 100%; aspect-ratio: 16 / 9; }

    .gdp-authorbox { flex-direction: column; }
    
    
    
}

@media (max-width: 480px) {
    
    
    .gdp-saved-actions .gdp-btn { flex: 1 1 auto; }
}

/* ============================================================================
   §18  Motion, accessibility, print
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
    .gdp *, .gdp *::before, .gdp *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
    }
    
}

.gdp.no-anim *, .gdp.no-anim *::before, .gdp.no-anim *::after {
    animation: none !important;
    transition: none !important;
}

/* High-contrast mode strips backgrounds; borders have to carry the shape. */
@media (forced-colors: active) {
    .gdp-card, .gdp-btn, .gdp-chip, .gdp-badge,
    .gdp-side-card, .gdp-acc-item, .gdp-step-check { border: 1px solid; }
    .gdp-chip.is-on, .gdp-fb-reason.is-on, .gdp-step-check.is-on { outline: 2px solid; outline-offset: -3px; }
}

@media print {
    /* Anything the reveal observer never fired for is stuck at opacity 0;
       print always shows everything. */
    .gdp [data-gdp-reveal] { opacity: 1 !important; transform: none !important; }

    .gdp-progress,
.gdp-toc,
.gdp-side,
.gdp-gh-actions,
.gdp-feedback,
.gdp-next,
.gdp-crumbs { display: none !important; }

    .gdp-layout { grid-template-columns: 1fr !important; }
    .gdp-step   { break-inside: avoid; }
    .gdp-code pre { white-space: pre-wrap; }
    .gdp { background: #fff; color: #000; }
}