/* =========================================================================
   BaDevX — Developer-themed docs site (template ref: 19_trpc)
   Independent CSS. Do NOT compare with other site stylesheets.
   Palette: deep slate + developer blue (#2563EB) + accent blue-400 (#60A5FA)
   ========================================================================= */

/* -------------------------------------------------------------------------
   1. Tokens & Reset
   ------------------------------------------------------------------------- */
:root {
  --dx-blue:           #2563EB;
  --dx-blue-h:         #3B82F6;
  --dx-blue-l:         #60A5FA;
  --dx-blue-xl:        #93C5FD;
  --dx-blue-dim:       rgba(37, 99, 235, 0.18);
  --dx-violet:         #8B5CF6;
  --dx-cyan:           #22D3EE;
  --dx-mint:           #34D399;
  --dx-rose:           #F472B6;
  --dx-amber:          #F59E0B;

  /* dark theme (default) */
  --dx-bg:             #0B1120;
  --dx-bg-1:           #0F172A;
  --dx-bg-2:           #111B30;
  --dx-bg-3:           #15203B;
  --dx-bg-4:           #1B2945;
  --dx-bg-5:           #243657;
  --dx-bg-elev:        rgba(20, 30, 55, 0.72);
  --dx-bg-glass:       rgba(11, 17, 32, 0.72);

  --dx-fg:             #E2E8F0;
  --dx-fg-h:           #F8FAFC;
  --dx-fg-2:           #CBD5E1;
  --dx-fg-3:           #94A3B8;
  --dx-fg-4:           #64748B;
  --dx-fg-5:           #475569;

  --dx-line:           rgba(148, 163, 184, 0.16);
  --dx-line-2:         rgba(148, 163, 184, 0.10);
  --dx-line-strong:    rgba(96, 165, 250, 0.28);

  --dx-link:           var(--dx-blue-l);
  --dx-link-h:         var(--dx-blue-xl);

  --dx-grad-a:         linear-gradient(135deg, #2563EB 0%, #4F46E5 50%, #8B5CF6 100%);
  --dx-grad-b:         linear-gradient(120deg, rgba(37,99,235,0.35), rgba(139,92,246,0.25), rgba(34,211,238,0.18));
  --dx-grad-glow:      radial-gradient(60% 80% at 50% 0%, rgba(96,165,250,0.18) 0%, rgba(96,165,250,0) 70%);
  --dx-grad-card:      linear-gradient(180deg, rgba(37,99,235,0.05) 0%, rgba(15,23,42,0) 100%);

  --dx-radius-sm: 6px;
  --dx-radius:    10px;
  --dx-radius-lg: 14px;
  --dx-radius-xl: 22px;

  --dx-shadow-sm: 0 1px 2px rgba(0,0,0,0.25);
  --dx-shadow:    0 4px 14px rgba(0,0,0,0.30), 0 1px 2px rgba(0,0,0,0.20);
  --dx-shadow-lg: 0 12px 38px rgba(0,0,0,0.40), 0 2px 6px rgba(0,0,0,0.25);
  --dx-shadow-blue: 0 0 0 1px rgba(96,165,250,0.25), 0 8px 30px rgba(37,99,235,0.30);

  --dx-font: ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', 'Noto Sans CJK SC', 'PingFang SC', 'Microsoft YaHei', Arial, sans-serif;
  --dx-mono: ui-monospace, 'JetBrains Mono', 'Fira Code', SFMono-Regular, 'SF Mono', Menlo, Consolas, 'Liberation Mono', monospace;

  --dx-header-h:       60px;
  --dx-sidebar-w:      264px;
  --dx-toc-w:          224px;
  --dx-content-max:    760px;
  --dx-shell-max:      1380px;
}
:root[data-theme='light'] {
  --dx-bg:             #FFFFFF;
  --dx-bg-1:           #F8FAFC;
  --dx-bg-2:           #F1F5F9;
  --dx-bg-3:           #E2E8F0;
  --dx-bg-4:           #DBE3EE;
  --dx-bg-5:           #CBD5E1;
  --dx-bg-elev:        rgba(255,255,255,0.85);
  --dx-bg-glass:       rgba(255,255,255,0.78);

  --dx-fg:             #0F172A;
  --dx-fg-h:           #020617;
  --dx-fg-2:           #1E293B;
  --dx-fg-3:           #334155;
  --dx-fg-4:           #475569;
  --dx-fg-5:           #64748B;

  --dx-line:           rgba(15, 23, 42, 0.10);
  --dx-line-2:         rgba(15, 23, 42, 0.06);
  --dx-line-strong:    rgba(37, 99, 235, 0.32);

  --dx-link:           #1D4ED8;
  --dx-link-h:         #1E40AF;
  --dx-shadow-sm: 0 1px 2px rgba(15,23,42,0.06);
  --dx-shadow:    0 4px 14px rgba(15,23,42,0.08), 0 1px 2px rgba(15,23,42,0.05);
  --dx-shadow-lg: 0 12px 38px rgba(15,23,42,0.10), 0 2px 6px rgba(15,23,42,0.06);
  --dx-shadow-blue: 0 0 0 1px rgba(37,99,235,0.20), 0 8px 24px rgba(37,99,235,0.18);
  --dx-grad-card:      linear-gradient(180deg, rgba(37,99,235,0.06) 0%, rgba(255,255,255,0) 100%);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0;
  font-family: var(--dx-font);
  font-size: 15px;
  line-height: 1.65;
  color: var(--dx-fg);
  background: var(--dx-bg);
  background-image:
    radial-gradient(60rem 32rem at 50% -8rem, rgba(37,99,235,0.10) 0%, rgba(37,99,235,0) 70%),
    radial-gradient(40rem 30rem at 90% 0%, rgba(139,92,246,0.08) 0%, rgba(139,92,246,0) 65%);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}
img, svg { max-width: 100%; display: inline-block; vertical-align: middle; }
a { color: var(--dx-link); text-decoration: none; transition: color 0.15s ease; }
a:hover { color: var(--dx-link-h); text-decoration: underline; text-underline-offset: 3px; }
button { font-family: inherit; cursor: pointer; }
::selection { background: rgba(37, 99, 235, 0.36); color: var(--dx-fg-h); }
.dx-skip { position:absolute; left:-9999px; }
.dx-skip:focus { left:1rem; top:1rem; z-index:1000; padding:.5rem 1rem; background:var(--dx-bg-3); border:1px solid var(--dx-line); border-radius:8px; }

/* -------------------------------------------------------------------------
   2. Header
   ------------------------------------------------------------------------- */
.dx-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--dx-header-h);
  border-bottom: 1px solid var(--dx-line);
  background: var(--dx-bg-glass);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
}
.dx-header__bar {
  display: flex;
  align-items: center;
  gap: 14px;
  height: 100%;
  max-width: var(--dx-shell-max);
  margin: 0 auto;
  padding: 0 22px;
}
.dx-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--dx-fg-h);
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.2px;
}
.dx-brand:hover { text-decoration: none; color: var(--dx-fg-h); }
.dx-brand__mark { display: inline-flex; }
.dx-brand__name { display:inline-flex; align-items: baseline; gap: 1px; }
.dx-brand__name-a { color: var(--dx-fg-h); }
.dx-brand__name-b {
  color: var(--dx-blue-l);
  background: linear-gradient(135deg, var(--dx-blue) 0%, var(--dx-blue-l) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.dx-topnav { display: flex; gap: 4px; margin-left: 6px; }
.dx-topnav__l {
  position: relative;
  display: inline-flex;
  align-items: center;
  height: 32px;
  padding: 0 12px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--dx-fg-2);
  border-radius: 8px;
}
.dx-topnav__l:hover { color: var(--dx-fg-h); background: var(--dx-bg-3); text-decoration: none; }
.dx-topnav__l.is-active { color: var(--dx-blue-l); }
.dx-topnav__l.is-active::after {
  content: '';
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: -16px;
  height: 2px;
  background: linear-gradient(90deg, var(--dx-blue), var(--dx-blue-l));
  border-radius: 2px;
}
.dx-spacer { flex: 1 1 auto; }
.dx-header__icons { display: inline-flex; align-items: center; gap: 6px; }
.dx-iconlink {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px; height: 30px;
  border-radius: 8px;
  color: var(--dx-fg-3);
}
.dx-iconlink:hover { background: var(--dx-bg-3); color: var(--dx-blue-l); text-decoration: none; }
.dx-header__ver {
  display: inline-flex;
  align-items: center;
  height: 28px;
  padding: 0 10px;
  margin-left: 4px;
  font-size: 12px;
  color: var(--dx-fg-3);
  background: var(--dx-bg-3);
  border: 1px solid var(--dx-line);
  border-radius: 999px;
}
.dx-icobtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  background: transparent;
  border: 1px solid var(--dx-line);
  border-radius: 8px;
  color: var(--dx-fg-2);
}
.dx-icobtn:hover { color: var(--dx-fg-h); background: var(--dx-bg-3); border-color: var(--dx-line-strong); }
.dx-icobtn .dx-th-l { display: none; }
.dx-icobtn .dx-th-d { display: inline-flex; }
:root[data-theme='light'] .dx-icobtn .dx-th-l { display: inline-flex; }
:root[data-theme='light'] .dx-icobtn .dx-th-d { display: none; }
.dx-mobile { display: none; }
.dx-search-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 32px;
  padding: 0 10px 0 10px;
  border: 1px solid var(--dx-line);
  border-radius: 8px;
  background: var(--dx-bg-2);
  color: var(--dx-fg-3);
  font-size: 12.5px;
}
.dx-search-btn:hover { color: var(--dx-fg-h); border-color: var(--dx-line-strong); background: var(--dx-bg-3); }
.dx-search-btn__lab { padding-right: 16px; }
.dx-search-btn__kbd {
  font-family: var(--dx-mono);
  font-size: 11px;
  padding: 1px 6px;
  border-radius: 4px;
  background: var(--dx-bg-4);
  color: var(--dx-fg-3);
  border: 1px solid var(--dx-line);
}

/* Language dropdown */
.dx-lang { position: relative; }
.dx-lang__btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 10px;
  border: 1px solid var(--dx-line);
  border-radius: 8px;
  background: transparent;
  color: var(--dx-fg-2);
  font-size: 12.5px;
}
.dx-lang__btn:hover { background: var(--dx-bg-3); color: var(--dx-fg-h); }
.dx-lang__menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  min-width: 168px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--dx-bg-2);
  border: 1px solid var(--dx-line);
  border-radius: 10px;
  box-shadow: var(--dx-shadow-lg);
  display: none;
  z-index: 60;
}
.dx-lang.is-open .dx-lang__menu { display: block; }
.dx-lang__menu li { margin: 0; }
.dx-lang__menu a {
  display: block;
  padding: 7px 10px;
  border-radius: 6px;
  color: var(--dx-fg-2);
  font-size: 13px;
}
.dx-lang__menu a:hover { background: var(--dx-bg-3); color: var(--dx-fg-h); text-decoration: none; }
.dx-lang__menu a.is-current { color: var(--dx-blue-l); background: var(--dx-bg-3); }

/* -------------------------------------------------------------------------
   3. Shell / Layout
   ------------------------------------------------------------------------- */
.dx-shell {
  max-width: var(--dx-shell-max);
  margin: 0 auto;
  padding: 0 22px;
}
.dx-shell--doc {
  display: grid;
  grid-template-columns: var(--dx-sidebar-w) minmax(0, 1fr);
  gap: 32px;
  padding-top: 18px;
  padding-bottom: 64px;
}
.dx-main { min-width: 0; }
.dx-main--full { padding: 0; }
.dx-main--doc { min-width: 0; }

/* -------------------------------------------------------------------------
   4. Sidebar (left docs tree)
   ------------------------------------------------------------------------- */
.dx-sidebar {
  position: sticky;
  top: var(--dx-header-h);
  align-self: start;
  height: calc(100vh - var(--dx-header-h));
  overflow-y: auto;
  padding-right: 8px;
  padding-top: 18px;
  border-right: 1px solid var(--dx-line);
  scrollbar-width: thin;
  scrollbar-color: var(--dx-bg-4) transparent;
}
.dx-sidebar::-webkit-scrollbar { width: 6px; }
.dx-sidebar::-webkit-scrollbar-thumb { background: var(--dx-bg-4); border-radius: 3px; }
.dx-sidebar__inner { padding-bottom: 60px; padding-right: 8px; }
.dx-sb__verbox {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 14px;
  padding: 4px 10px;
  background: var(--dx-bg-3);
  border: 1px solid var(--dx-line);
  border-radius: 999px;
  font-size: 12px;
  color: var(--dx-fg-3);
}
.dx-sb__vertag { color: var(--dx-blue-l); font-weight: 600; }
.dx-sb__filter {
  position: relative;
  margin-bottom: 16px;
}
.dx-sb__filter-ic {
  position: absolute; left: 10px; top: 50%; transform: translateY(-50%);
  color: var(--dx-fg-4);
}
.dx-sb__filter-input {
  width: 100%;
  height: 32px;
  padding: 0 10px 0 30px;
  font-family: var(--dx-font);
  font-size: 13px;
  color: var(--dx-fg);
  background: var(--dx-bg-2);
  border: 1px solid var(--dx-line);
  border-radius: 8px;
}
.dx-sb__filter-input:focus {
  outline: none;
  border-color: var(--dx-blue);
  box-shadow: 0 0 0 3px var(--dx-blue-dim);
}
.dx-sb__top {
  display: flex;
  flex-direction: column;
  gap: 1px;
  margin-bottom: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--dx-line);
}
.dx-sb__lnk {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 13px;
  color: var(--dx-fg-2);
  line-height: 1.45;
  text-decoration: none;
}
.dx-sb__lnk:hover { color: var(--dx-fg-h); background: var(--dx-bg-3); text-decoration: none; }
.dx-sb__lnk--top { font-weight: 500; color: var(--dx-fg-2); }
.dx-sb__lnk.is-active {
  color: var(--dx-blue-l);
  background: rgba(37, 99, 235, 0.12);
  font-weight: 600;
}
.dx-sb__grp { margin-bottom: 6px; }
.dx-sb__grp-head {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 7px 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--dx-fg-h);
  text-align: left;
  background: transparent;
  border: 0;
  border-radius: 6px;
}
.dx-sb__grp-head:hover { background: var(--dx-bg-3); }
.dx-sb__grp-chev {
  display: inline-flex;
  color: var(--dx-fg-4);
  transition: transform 0.18s ease;
  transform: rotate(90deg);
}
.dx-sb__grp.is-collapsed .dx-sb__grp-chev { transform: rotate(0); }
.dx-sb__grp-t { flex: 1 1 auto; }
.dx-sb__grp-cnt {
  font-size: 11px;
  font-weight: 600;
  padding: 0 6px;
  height: 17px;
  display: inline-flex;
  align-items: center;
  background: var(--dx-bg-3);
  border-radius: 999px;
  color: var(--dx-fg-3);
}
.dx-sb__list {
  margin: 0;
  padding: 2px 0 6px 22px;
  list-style: none;
  border-left: 1px solid var(--dx-line);
  margin-left: 12px;
}
.dx-sb__grp.is-collapsed .dx-sb__list { display: none; }
.dx-sb__list li { margin: 0; }
.dx-sb__list .dx-sb__lnk {
  display: block;
  padding: 5px 10px;
  font-size: 12.5px;
  color: var(--dx-fg-3);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  border-left: 2px solid transparent;
  margin-left: -23px;
  padding-left: 22px;
  border-radius: 0 6px 6px 0;
}
.dx-sb__list .dx-sb__lnk:hover { color: var(--dx-fg-h); background: var(--dx-bg-3); }
.dx-sb__list .dx-sb__lnk.is-active {
  color: var(--dx-blue-l);
  background: rgba(37, 99, 235, 0.12);
  border-left-color: var(--dx-blue);
  font-weight: 500;
}
.dx-sb__lnk--cat { font-style: italic; }
.dx-sb__foot {
  display: flex;
  flex-direction: column;
  gap: 1px;
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px solid var(--dx-line);
}
.dx-sb__foot-l {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 10px;
  font-size: 12.5px;
  color: var(--dx-fg-3);
  border-radius: 6px;
}
.dx-sb__foot-l:hover { color: var(--dx-fg-h); background: var(--dx-bg-3); text-decoration: none; }

/* -------------------------------------------------------------------------
   5. Hero (home)
   ------------------------------------------------------------------------- */
.dx-hero {
  position: relative;
  padding: 96px 0 84px;
  overflow: hidden;
  border-bottom: 1px solid var(--dx-line);
}
.dx-hero__bg {
  position: absolute; inset: 0;
  pointer-events: none;
}
.dx-hero__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(to right, var(--dx-line-2) 1px, transparent 1px),
    linear-gradient(to bottom, var(--dx-line-2) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(60% 60% at 50% 40%, #000 0%, transparent 70%);
          mask-image: radial-gradient(60% 60% at 50% 40%, #000 0%, transparent 70%);
  opacity: 0.7;
}
.dx-hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
}
.dx-hero__glow--a {
  width: 540px; height: 540px;
  background: radial-gradient(circle, var(--dx-blue) 0%, transparent 60%);
  top: -180px; left: 14%;
}
.dx-hero__glow--b {
  width: 480px; height: 480px;
  background: radial-gradient(circle, var(--dx-violet) 0%, transparent 60%);
  top: -120px; right: 10%;
}
.dx-hero__inner {
  position: relative;
  max-width: 880px;
  margin: 0 auto;
  padding: 0 22px;
  text-align: center;
}
.dx-hero__kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px;
  margin-bottom: 22px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  color: var(--dx-blue-l);
  background: rgba(37, 99, 235, 0.10);
  border: 1px solid rgba(96, 165, 250, 0.25);
  border-radius: 999px;
}
.dx-hero__kicker-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--dx-blue-l);
  box-shadow: 0 0 10px rgba(96, 165, 250, 0.7);
  animation: dx-pulse 2s ease-in-out infinite;
}
@keyframes dx-pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.45; } }
.dx-hero__kicker-ver {
  margin-left: 4px;
  padding-left: 10px;
  border-left: 1px solid rgba(96, 165, 250, 0.30);
  color: var(--dx-fg-3);
  font-weight: 500;
}
.dx-hero__brandrow {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}
.dx-hero__bigmark { display: inline-flex; }
.dx-hero__title {
  margin: 0;
  font-size: 64px;
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--dx-fg-h);
}
.dx-hero__title-x {
  background: linear-gradient(135deg, var(--dx-blue) 0%, var(--dx-blue-l) 60%, var(--dx-violet) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.dx-hero__sub {
  margin: 14px auto 28px;
  max-width: 640px;
  font-size: 17px;
  color: var(--dx-fg-2);
  line-height: 1.7;
}
.dx-hero__search {
  display: flex;
  align-items: center;
  gap: 10px;
  max-width: 520px;
  margin: 0 auto 24px;
  padding: 0 14px;
  height: 50px;
  background: var(--dx-bg-2);
  border: 1px solid var(--dx-line);
  border-radius: 12px;
  box-shadow: var(--dx-shadow);
  transition: border-color .15s, box-shadow .15s;
}
.dx-hero__search:focus-within {
  border-color: var(--dx-blue);
  box-shadow: 0 0 0 4px var(--dx-blue-dim), var(--dx-shadow);
}
.dx-hero__search-ic { color: var(--dx-fg-4); }
.dx-hero__search-in {
  flex: 1 1 auto;
  height: 100%;
  border: 0;
  background: transparent;
  font: inherit;
  color: var(--dx-fg-h);
}
.dx-hero__search-in:focus { outline: none; }
.dx-hero__search-in::placeholder { color: var(--dx-fg-4); }
.dx-hero__search-kbd {
  font-family: var(--dx-mono);
  font-size: 11.5px;
  padding: 2px 7px;
  background: var(--dx-bg-3);
  color: var(--dx-fg-3);
  border: 1px solid var(--dx-line);
  border-radius: 5px;
}
.dx-hero__cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 36px;
}
.dx-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 42px;
  padding: 0 18px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.12s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.dx-btn:hover { text-decoration: none; transform: translateY(-1px); }
.dx-btn--primary {
  color: #fff;
  background: var(--dx-grad-a);
  box-shadow: var(--dx-shadow-blue);
}
.dx-btn--primary:hover { color: #fff; box-shadow: 0 0 0 1px rgba(96,165,250,0.4), 0 12px 32px rgba(37,99,235,0.40); }
.dx-btn--ghost {
  color: var(--dx-fg-h);
  background: var(--dx-bg-2);
  border: 1px solid var(--dx-line);
}
.dx-btn--ghost:hover { color: var(--dx-fg-h); background: var(--dx-bg-3); border-color: var(--dx-line-strong); }
.dx-hero__stats {
  display: inline-flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 28px;
  padding: 12px 24px;
  background: var(--dx-bg-2);
  border: 1px solid var(--dx-line);
  border-radius: 14px;
}
.dx-hero__stat { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.dx-hero__stat-v { font-size: 22px; font-weight: 700; color: var(--dx-blue-l); font-family: var(--dx-mono); }
.dx-hero__stat-l { font-size: 12px; color: var(--dx-fg-3); }

/* -------------------------------------------------------------------------
   6. Section + cardgrid
   ------------------------------------------------------------------------- */
.dx-sec {
  max-width: 1180px;
  margin: 0 auto;
  padding: 80px 22px;
}
.dx-sec--alt { background: linear-gradient(180deg, var(--dx-bg-1) 0%, transparent 100%); }
.dx-sec--faq { padding-bottom: 100px; }
.dx-sec__head {
  margin-bottom: 36px;
  text-align: center;
  max-width: 720px;
  margin-left: auto; margin-right: auto;
}
.dx-sec__kicker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--dx-blue-l);
  margin-bottom: 12px;
}
.dx-sec__h {
  margin: 0 0 12px;
  font-size: 36px;
  line-height: 1.18;
  font-weight: 700;
  letter-spacing: -0.3px;
  color: var(--dx-fg-h);
}
.dx-sec__p {
  margin: 0;
  color: var(--dx-fg-2);
  font-size: 16px;
  line-height: 1.7;
}
.dx-cardgrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.dx-cardgrid--cat { grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); }
.dx-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 22px;
  background: var(--dx-bg-2);
  border: 1px solid var(--dx-line);
  border-radius: var(--dx-radius-lg);
  color: var(--dx-fg-h);
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.18s ease;
  text-decoration: none;
  background-image: var(--dx-grad-card);
  overflow: hidden;
}
.dx-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(140deg, rgba(96,165,250,0.06) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}
.dx-card:hover {
  border-color: var(--dx-line-strong);
  transform: translateY(-2px);
  box-shadow: var(--dx-shadow-lg);
  text-decoration: none;
  color: var(--dx-fg-h);
}
.dx-card:hover::before { opacity: 1; }
.dx-card.is-featured {
  background: linear-gradient(140deg, rgba(37,99,235,0.10) 0%, var(--dx-bg-2) 60%);
  border-color: rgba(96, 165, 250, 0.35);
}
.dx-card__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 14px; }
.dx-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 10px;
  background: rgba(37, 99, 235, 0.14);
  color: var(--dx-blue-l);
  border: 1px solid rgba(96, 165, 250, 0.20);
}
.dx-card__no {
  font-family: var(--dx-mono);
  font-size: 12px;
  font-weight: 600;
  color: var(--dx-fg-4);
  letter-spacing: 0.5px;
}
.dx-card__title {
  font-size: 18px;
  font-weight: 700;
  color: var(--dx-fg-h);
  margin-bottom: 8px;
}
.dx-card__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--dx-fg-3);
}
.dx-card__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 12px 0 0;
  border-top: 1px dashed var(--dx-line);
}
.dx-card__list li {
  position: relative;
  padding-left: 16px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--dx-fg-2);
}
.dx-card__list-arr {
  position: absolute;
  left: 0;
  color: var(--dx-blue-l);
  font-weight: 700;
}
.dx-card__more {
  margin-top: auto;
  padding-top: 14px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--dx-blue-l);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.dx-card:hover .dx-card__more { gap: 10px; }
.dx-card__count {
  margin-top: 14px;
  font-size: 12px;
  color: var(--dx-fg-4);
  font-family: var(--dx-mono);
}

/* -------------------------------------------------------------------------
   7. Flow / Quickstart pane
   ------------------------------------------------------------------------- */
.dx-flow {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: 32px;
  align-items: start;
  max-width: 1100px;
  margin: 0 auto;
}
.dx-flow__pane {
  border: 1px solid var(--dx-line);
  border-radius: var(--dx-radius-lg);
  background: linear-gradient(180deg, var(--dx-bg-2), var(--dx-bg-1));
  overflow: hidden;
  box-shadow: var(--dx-shadow-lg);
}
.dx-flow__pane-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  background: var(--dx-bg-3);
  border-bottom: 1px solid var(--dx-line);
}
.dx-flow__dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--dx-bg-5);
}
.dx-flow__dot:nth-child(1) { background: #EF4444; }
.dx-flow__dot:nth-child(2) { background: #F59E0B; }
.dx-flow__dot:nth-child(3) { background: #10B981; }
.dx-flow__pane-t {
  margin-left: auto;
  font-family: var(--dx-mono);
  font-size: 11.5px;
  color: var(--dx-fg-4);
  letter-spacing: 0.4px;
}
.dx-flow__pane-body {
  padding: 18px 18px 22px;
  font-family: var(--dx-mono);
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--dx-fg-2);
}
.dx-flow__line { display: flex; gap: 10px; align-items: center; }
.dx-flow__pmt { color: var(--dx-blue-l); font-weight: 600; }
.dx-flow__cmd { color: var(--dx-fg-h); }
.dx-flow__line--out { color: var(--dx-fg-4); padding-left: 18px; }
.dx-flow__ok { color: var(--dx-mint); }
.dx-flow__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.dx-flow__steps li {
  display: flex;
  gap: 14px;
  padding: 16px;
  background: var(--dx-bg-2);
  border: 1px solid var(--dx-line);
  border-radius: var(--dx-radius);
  transition: border-color 0.15s;
}
.dx-flow__steps li:hover { border-color: var(--dx-line-strong); }
.dx-flow__step-no {
  flex: 0 0 auto;
  width: 36px; height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--dx-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--dx-blue-l);
  background: rgba(37, 99, 235, 0.12);
  border: 1px solid rgba(96, 165, 250, 0.22);
  border-radius: 8px;
}
.dx-flow__step-h { color: var(--dx-fg-h); font-weight: 700; font-size: 14.5px; margin-bottom: 4px; }
.dx-flow__step-p { margin: 0; font-size: 13px; color: var(--dx-fg-3); line-height: 1.65; }

/* -------------------------------------------------------------------------
   8. Reflist / postlist / faq / pager
   ------------------------------------------------------------------------- */
.dx-reflist {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 8px;
}
.dx-reflist__it a {
  display: block;
  padding: 12px 14px;
  border: 1px solid var(--dx-line);
  border-radius: 10px;
  background: var(--dx-bg-2);
  color: var(--dx-fg-2);
  text-decoration: none;
  transition: border-color 0.15s;
}
.dx-reflist__it a:hover { border-color: var(--dx-line-strong); color: var(--dx-fg-h); }
.dx-reflist__it strong { color: var(--dx-blue-l); font-weight: 600; }
.dx-reflist__d { display: block; margin-top: 4px; font-size: 12.5px; color: var(--dx-fg-3); }

.dx-postlist {
  list-style: none;
  margin: 0;
  padding: 0;
}
.dx-postlist__it {
  padding: 18px 0;
  border-bottom: 1px solid var(--dx-line);
}
.dx-postlist__it:last-child { border-bottom: 0; }
.dx-postlist__t {
  display: block;
  font-size: 17px;
  font-weight: 600;
  color: var(--dx-fg-h);
  text-decoration: none;
  margin-bottom: 6px;
}
.dx-postlist__t:hover { color: var(--dx-blue-l); text-decoration: none; }
.dx-postlist__meta {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12.5px;
  color: var(--dx-fg-4);
  margin-bottom: 6px;
}
.dx-postlist__date { font-family: var(--dx-mono); }
.dx-postlist__chip {
  display: inline-flex;
  padding: 1px 8px;
  background: rgba(37, 99, 235, 0.12);
  color: var(--dx-blue-l);
  border-radius: 999px;
  font-size: 11.5px;
  font-weight: 500;
}
.dx-postlist__d {
  margin: 0;
  font-size: 13.5px;
  color: var(--dx-fg-3);
  line-height: 1.65;
}
.dx-viewall {
  margin-top: 24px;
  text-align: center;
  font-weight: 600;
}
.dx-viewall a { color: var(--dx-blue-l); }

.dx-faq {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.dx-faq__it {
  background: var(--dx-bg-2);
  border: 1px solid var(--dx-line);
  border-radius: 10px;
  overflow: hidden;
}
.dx-faq__it[open] { border-color: var(--dx-line-strong); }
.dx-faq__q {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  color: var(--dx-fg-h);
  font-size: 14.5px;
}
.dx-faq__q::-webkit-details-marker { display: none; }
.dx-faq__qmark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px; height: 24px;
  flex: 0 0 auto;
  font-size: 12.5px;
  font-weight: 700;
  font-family: var(--dx-mono);
  color: var(--dx-blue-l);
  background: rgba(37, 99, 235, 0.14);
  border-radius: 6px;
}
.dx-faq__qt { flex: 1 1 auto; }
.dx-faq__chev { color: var(--dx-fg-4); transition: transform 0.18s; }
.dx-faq__it[open] .dx-faq__chev { transform: rotate(180deg); }
.dx-faq__a {
  padding: 0 18px 18px 54px;
  color: var(--dx-fg-2);
  font-size: 14px;
  line-height: 1.75;
}
.dx-faq__a p { margin: 0; }

.dx-pager {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 30px;
  padding-top: 26px;
  border-top: 1px solid var(--dx-line);
}
.dx-pager__btn,
.dx-pager__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  height: 34px;
  padding: 0 12px;
  font-size: 13px;
  border: 1px solid var(--dx-line);
  border-radius: 8px;
  color: var(--dx-fg-2);
  background: var(--dx-bg-2);
  text-decoration: none;
}
.dx-pager__btn:hover,
.dx-pager__num:hover { color: var(--dx-fg-h); border-color: var(--dx-line-strong); text-decoration: none; }
.dx-pager__num { min-width: 34px; }
.dx-pager__num.is-current {
  color: #fff;
  background: var(--dx-blue);
  border-color: var(--dx-blue);
}
.dx-pager__btn.is-disabled,
.dx-pager__num.is-disabled { color: var(--dx-fg-5); cursor: not-allowed; }

/* -------------------------------------------------------------------------
   9. Article / Prose
   ------------------------------------------------------------------------- */
.dx-article { padding: 18px 0 40px; }
.dx-article--list { padding-bottom: 60px; }
.dx-crumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 12.5px;
  color: var(--dx-fg-4);
  margin-bottom: 18px;
}
.dx-crumb a { color: var(--dx-fg-3); text-decoration: none; }
.dx-crumb a:hover { color: var(--dx-blue-l); text-decoration: none; }
.dx-crumb__sep { color: var(--dx-fg-5); }
.dx-crumb__cur { color: var(--dx-fg-2); }
.dx-art__head { margin-bottom: 28px; }
.dx-art__kicker {
  display: inline-flex;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--dx-blue-l);
  margin-bottom: 8px;
}
.dx-art__h1 {
  margin: 0 0 12px;
  font-size: 38px;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.4px;
  color: var(--dx-fg-h);
}
.dx-art__lede {
  margin: 0 0 14px;
  font-size: 16px;
  color: var(--dx-fg-2);
  line-height: 1.7;
}
.dx-art__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--dx-fg-4);
  padding: 10px 0;
  border-top: 1px solid var(--dx-line);
  border-bottom: 1px solid var(--dx-line);
}
.dx-art__meta-it { display: inline-flex; align-items: center; gap: 6px; }
.dx-art__meta-sep { color: var(--dx-fg-5); margin: 0 4px; }
.dx-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 1px 8px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
  color: var(--dx-blue-l);
  font-size: 11.5px;
}
.dx-chip:hover { color: var(--dx-blue-xl); text-decoration: none; }
.dx-art__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--dx-toc-w);
  gap: 40px;
  align-items: start;
}

/* Prose (markdown rendered content) */
.dx-prose {
  max-width: var(--dx-content-max);
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--dx-fg);
}
.dx-prose h2 {
  margin: 44px 0 14px;
  font-size: 26px;
  line-height: 1.3;
  font-weight: 700;
  color: var(--dx-fg-h);
  scroll-margin-top: 80px;
  letter-spacing: -0.2px;
}
.dx-prose h2:first-child { margin-top: 0; }
.dx-prose h3 {
  margin: 28px 0 10px;
  font-size: 19px;
  line-height: 1.4;
  font-weight: 600;
  color: var(--dx-fg-h);
  scroll-margin-top: 80px;
}
.dx-prose h4 { margin: 20px 0 8px; font-size: 16px; font-weight: 600; color: var(--dx-fg-h); }
.dx-prose p { margin: 12px 0; }
.dx-prose a {
  color: var(--dx-link);
  text-decoration: underline;
  text-decoration-color: rgba(96,165,250,0.35);
  text-underline-offset: 3px;
}
.dx-prose a:hover { color: var(--dx-link-h); text-decoration-color: currentColor; }
.dx-prose strong { color: var(--dx-fg-h); font-weight: 700; }
.dx-prose ul, .dx-prose ol { padding-left: 26px; }
.dx-prose li { margin: 6px 0; }
.dx-prose li > p { margin: 6px 0; }
.dx-prose hr {
  border: 0;
  border-top: 1px dashed var(--dx-line);
  margin: 30px 0;
}
.dx-prose blockquote {
  margin: 18px 0;
  padding: 14px 18px;
  border-left: 3px solid var(--dx-blue);
  background: linear-gradient(90deg, rgba(37,99,235,0.10), transparent 80%);
  border-radius: 0 8px 8px 0;
  color: var(--dx-fg-2);
}
.dx-prose blockquote p { margin: 4px 0; }

/* Inline code */
.dx-prose :not(pre) > code {
  padding: 1px 6px;
  font-family: var(--dx-mono);
  font-size: 0.88em;
  color: var(--dx-blue-l);
  background: rgba(37, 99, 235, 0.10);
  border: 1px solid rgba(96, 165, 250, 0.18);
  border-radius: 4px;
}
/* Code blocks */
.dx-prose pre {
  margin: 18px 0;
  padding: 16px 18px;
  background: #0A0F1E;
  border: 1px solid var(--dx-line);
  border-radius: var(--dx-radius);
  overflow-x: auto;
  font-family: var(--dx-mono);
  font-size: 13.5px;
  line-height: 1.7;
  color: #E2E8F0;
  position: relative;
}
:root[data-theme='light'] .dx-prose pre { background: #0F172A; color: #E2E8F0; }
.dx-prose pre code { background: transparent; padding: 0; color: inherit; border: 0; font-size: inherit; }
.dx-codeblock { position: relative; }
.dx-codeblock__copy {
  position: absolute;
  right: 8px;
  top: 8px;
  padding: 4px 9px;
  font-size: 11.5px;
  color: #94A3B8;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 6px;
}
.dx-codeblock__copy:hover { color: #fff; background: rgba(255,255,255,0.10); }
.dx-codeblock__copy.is-ok { color: var(--dx-mint); border-color: var(--dx-mint); }

/* Tables */
.dx-prose table {
  width: 100%;
  margin: 18px 0;
  border-collapse: collapse;
  font-size: 13.5px;
  background: var(--dx-bg-2);
  border: 1px solid var(--dx-line);
  border-radius: var(--dx-radius);
  overflow: hidden;
}
.dx-prose thead { background: var(--dx-bg-3); }
.dx-prose th, .dx-prose td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--dx-line);
}
.dx-prose th { color: var(--dx-fg-h); font-weight: 600; font-size: 13px; }
.dx-prose tr:last-child td { border-bottom: 0; }
.dx-prose tbody tr:hover { background: var(--dx-bg-3); }

/* Images */
.dx-prose img { border-radius: 8px; border: 1px solid var(--dx-line); }

/* TOC right rail */
.dx-toc {
  position: sticky;
  top: calc(var(--dx-header-h) + 14px);
  align-self: start;
  max-height: calc(100vh - var(--dx-header-h) - 28px);
  overflow-y: auto;
  font-size: 12.5px;
  color: var(--dx-fg-3);
}
.dx-toc__head {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  color: var(--dx-fg-h);
  margin-bottom: 10px;
}
.dx-toc__head--sm { font-size: 11px; margin-top: 18px; }
.dx-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-left: 1px solid var(--dx-line);
}
.dx-toc__it {
  margin: 0;
}
.dx-toc__it--lv2 a { padding-left: 14px; }
.dx-toc__it--lv3 a { padding-left: 26px; font-size: 12px; color: var(--dx-fg-4); }
.dx-toc__it a {
  display: block;
  padding: 4px 10px 4px 14px;
  margin-left: -1px;
  border-left: 2px solid transparent;
  color: var(--dx-fg-3);
  text-decoration: none;
  line-height: 1.5;
}
.dx-toc__it a:hover { color: var(--dx-fg-h); text-decoration: none; }
.dx-toc__it a.is-active {
  color: var(--dx-blue-l);
  border-left-color: var(--dx-blue);
  font-weight: 500;
}
.dx-toc__sect { margin-top: 14px; }
.dx-toc__edit {
  margin-top: 22px;
  padding-top: 14px;
  border-top: 1px solid var(--dx-line);
  font-size: 12px;
}
.dx-toc__edit-l { color: var(--dx-fg-3); display: inline-flex; align-items: center; gap: 6px; }
.dx-toc__edit-l:hover { color: var(--dx-blue-l); text-decoration: none; }

/* prev / next */
.dx-prevnext {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin: 36px 0 12px;
}
.dx-prevnext__it {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--dx-bg-2);
  border: 1px solid var(--dx-line);
  border-radius: var(--dx-radius);
  text-decoration: none;
  transition: border-color .15s, background .15s;
  min-width: 0;
}
.dx-prevnext__it:hover { border-color: var(--dx-line-strong); background: var(--dx-bg-3); text-decoration: none; }
.dx-prevnext__lab {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11.5px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--dx-fg-4);
  font-weight: 600;
}
.dx-prevnext__t {
  font-size: 14px;
  color: var(--dx-fg-h);
  font-weight: 500;
  line-height: 1.45;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}
.dx-prevnext__next { text-align: right; }
.dx-prevnext__sp { display: block; }

.dx-art__foot {
  margin-top: 30px;
  padding-top: 16px;
  border-top: 1px solid var(--dx-line);
}
.dx-art__foot-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; font-size: 12.5px; }
.dx-art__foot-l { display: inline-flex; gap: 6px; align-items: center; color: var(--dx-blue-l); }
.dx-art__foot-r { color: var(--dx-fg-4); }

/* page (about/disclaimer/download) */
.dx-page .dx-prose--page { max-width: 800px; }
.dx-prose--page h2 { font-size: 22px; }

/* -------------------------------------------------------------------------
   10. Footer
   ------------------------------------------------------------------------- */
.dx-footer {
  margin-top: 64px;
  border-top: 1px solid var(--dx-line);
  background: var(--dx-bg-1);
}
.dx-footer__top {
  max-width: var(--dx-shell-max);
  margin: 0 auto;
  padding: 48px 22px 32px;
}
.dx-footer__cols {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr;
  gap: 28px;
}
.dx-footer__col--brand { padding-right: 16px; }
.dx-footer__brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 700;
  font-size: 18px;
  color: var(--dx-fg-h);
  margin-bottom: 10px;
}
.dx-footer__brand:hover { text-decoration: none; color: var(--dx-fg-h); }
.dx-footer__brand em { color: var(--dx-blue-l); font-style: normal; }
.dx-footer__tag { font-size: 13px; color: var(--dx-fg-3); margin: 0 0 14px; line-height: 1.65; max-width: 320px; }
.dx-footer__badges { display: flex; gap: 8px; flex-wrap: wrap; }
.dx-footer__badge {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 3px 10px;
  font-size: 11.5px;
  background: var(--dx-bg-3);
  border: 1px solid var(--dx-line);
  border-radius: 999px;
  color: var(--dx-fg-3);
}
.dx-footer__badge-d {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--dx-mint);
  box-shadow: 0 0 6px var(--dx-mint);
}
.dx-footer__badge--alt { color: var(--dx-blue-l); font-family: var(--dx-mono); }
.dx-footer__h {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--dx-fg-h);
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 12px;
}
.dx-footer__col ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.dx-footer__col a { color: var(--dx-fg-3); font-size: 13.5px; }
.dx-footer__col a:hover { color: var(--dx-blue-l); text-decoration: none; }
.dx-footer__lang { display: flex; flex-wrap: wrap; gap: 6px 12px !important; flex-direction: row !important; }
.dx-footer__lang li { font-size: 12.5px; }
.dx-footer__lang a { color: var(--dx-fg-3); }
.dx-footer__lang a.is-current { color: var(--dx-blue-l); font-weight: 600; }
.dx-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  max-width: var(--dx-shell-max);
  margin: 0 auto;
  padding: 18px 22px;
  border-top: 1px solid var(--dx-line);
  font-size: 12.5px;
  color: var(--dx-fg-4);
}
.dx-footer__bottom-r { display: flex; gap: 18px; }
.dx-footer__bottom-r a { color: var(--dx-fg-3); }
.dx-footer__bottom-r a:hover { color: var(--dx-blue-l); text-decoration: none; }
.dx-footer__risk {
  max-width: var(--dx-shell-max);
  margin: 0 auto;
  padding: 14px 22px 22px;
  font-size: 12px;
  color: var(--dx-fg-4);
  line-height: 1.7;
  border-top: 1px solid var(--dx-line);
}

/* -------------------------------------------------------------------------
   11. 404
   ------------------------------------------------------------------------- */
.dx-404 {
  max-width: 560px;
  margin: 0 auto;
  padding: 90px 22px 60px;
  text-align: center;
}
.dx-404__code {
  font-family: var(--dx-mono);
  font-size: 96px;
  font-weight: 800;
  letter-spacing: -2px;
  background: var(--dx-grad-a);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}
.dx-404__brand { margin: 16px 0 12px; }
.dx-404__title { margin: 0 0 10px; font-size: 24px; color: var(--dx-fg-h); }
.dx-404__body { margin: 0 0 24px; color: var(--dx-fg-3); }
.dx-404__actions { display: inline-flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

/* -------------------------------------------------------------------------
   12. Responsive
   ------------------------------------------------------------------------- */
@media (max-width: 1100px) {
  .dx-art__body { grid-template-columns: 1fr; }
  .dx-toc { display: none; }
  .dx-flow { grid-template-columns: 1fr; }
  .dx-cardgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 940px) {
  .dx-shell--doc { grid-template-columns: 1fr; padding-top: 12px; gap: 0; }
  .dx-sidebar {
    position: fixed;
    top: var(--dx-header-h);
    left: 0;
    width: 86%;
    max-width: 320px;
    height: calc(100vh - var(--dx-header-h));
    background: var(--dx-bg);
    border-right: 1px solid var(--dx-line);
    box-shadow: var(--dx-shadow-lg);
    transform: translateX(-100%);
    transition: transform 0.22s ease;
    padding: 18px 12px 18px 18px;
    z-index: 45;
  }
  .dx-sidebar.is-open { transform: translateX(0); }
  .dx-mobile { display: inline-flex; }
  .dx-topnav { display: none; }
  .dx-header__icons { display: none; }
  .dx-header__ver { display: none; }
}
@media (max-width: 720px) {
  body { font-size: 14.5px; }
  .dx-hero { padding: 60px 0 50px; }
  .dx-hero__title { font-size: 44px; }
  .dx-hero__sub { font-size: 15px; }
  .dx-sec { padding: 50px 18px; }
  .dx-sec__h { font-size: 26px; }
  .dx-cardgrid { grid-template-columns: 1fr; }
  .dx-art__h1 { font-size: 26px; }
  .dx-prose h2 { font-size: 20px; }
  .dx-prose h3 { font-size: 17px; }
  .dx-prevnext { grid-template-columns: 1fr; }
  .dx-prevnext__next { text-align: left; }
  .dx-footer__cols { grid-template-columns: 1fr 1fr; gap: 24px; }
  .dx-footer__col--brand { grid-column: span 2; }
  .dx-search-btn__lab { display: none; }
  .dx-search-btn__kbd { display: none; }
  .dx-search-btn { padding: 0 10px; }
  .dx-lang__btn span:not(.dx-lang__icon) { display: none; }
  .dx-hero__brandrow { gap: 10px; }
  .dx-hero__bigmark svg { width: 40px; height: 40px; }
  .dx-hero__stats { gap: 16px; padding: 10px 14px; }
  .dx-hero__stat-v { font-size: 18px; }
  .dx-hero__cta .dx-btn { flex: 1 1 0; justify-content: center; }
}
@media (max-width: 480px) {
  .dx-footer__cols { grid-template-columns: 1fr; }
  .dx-footer__col--brand { grid-column: span 1; }
  .dx-footer__bottom { flex-direction: column; align-items: flex-start; }
  .dx-art__h1 { font-size: 22px; }
  .dx-prose pre { padding: 12px; }
}

/* -------------------------------------------------------------------------
   13. Misc utility tweaks
   ------------------------------------------------------------------------- */
.dx-body.dx-nav-open { overflow: hidden; }
.dx-prose ul li::marker { color: var(--dx-blue-l); }
.dx-prose ol li::marker { color: var(--dx-blue-l); font-weight: 700; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.001s !important; transition-duration: 0.001s !important; }
}