/* =====================================================================
   BabianXY · 12_vite-style docs site (lime + saffron palette)
   - Vite-style: gradient banner, top dark bar, card grids, generous space
   - Differentiation: replaces vite purple with lime #84CC16, accent saffron #FACC15
   - Light theme by default, dark theme via [data-theme="dark"]
   ===================================================================== */

/* ---------- 1. Tokens & Reset ---------- */
:root {
  --xy-primary: #84CC16;
  --xy-primary-d: #65A30D;
  --xy-primary-l: #A3E635;
  --xy-primary-tint: #ECFCCB;
  --xy-primary-tint-2: #F7FEE7;
  --xy-accent: #FACC15;
  --xy-accent-d: #CA8A04;
  --xy-accent-tint: #FEF3C7;
  --xy-bg: #FFFFFF;
  --xy-bg-elev: #FAFAF9;
  --xy-bg-soft: #F5F5F4;
  --xy-bg-soft-2: #F4F4F3;
  --xy-bg-banner: linear-gradient(110deg, #65A30D 0%, #84CC16 38%, #FACC15 100%);
  --xy-bg-glow: radial-gradient(circle at 70% 35%, rgba(132, 204, 22, 0.18) 0%, transparent 55%),
                radial-gradient(circle at 18% 80%, rgba(250, 204, 21, 0.16) 0%, transparent 55%);
  --xy-text: #1A2E05;
  --xy-text-soft: #44403C;
  --xy-text-muted: #78716C;
  --xy-text-subtle: #A8A29E;
  --xy-border: #E7E5E4;
  --xy-border-soft: #F0EFEE;
  --xy-border-strong: #D6D3D1;
  --xy-shadow-sm: 0 1px 2px rgba(20, 30, 5, 0.04);
  --xy-shadow: 0 4px 12px rgba(20, 30, 5, 0.06);
  --xy-shadow-lg: 0 16px 36px rgba(20, 30, 5, 0.08);
  --xy-radius: 10px;
  --xy-radius-sm: 6px;
  --xy-radius-lg: 14px;
  --xy-font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
             "Hiragino Sans GB", "Microsoft YaHei", Roboto, "Helvetica Neue",
             Arial, sans-serif;
  --xy-mono: ui-monospace, "JetBrains Mono", "SFMono-Regular", "Menlo",
             "Consolas", "Liberation Mono", monospace;
  --xy-content-max: 760px;
  --xy-shell-max: 1440px;
  --xy-sidebar-w: 264px;
  --xy-toc-w: 224px;
  --xy-header-h: 64px;
  --xy-banner-h: 32px;
  --xy-tx-fast: 120ms ease;
  --xy-tx: 180ms ease;
}
html[data-theme="dark"] {
  --xy-bg: #0A0F02;
  --xy-bg-elev: #131A07;
  --xy-bg-soft: #1A2208;
  --xy-bg-soft-2: #1F280C;
  --xy-text: #F7FEE7;
  --xy-text-soft: #D9D6D3;
  --xy-text-muted: #A6A19D;
  --xy-text-subtle: #74706C;
  --xy-border: #2A3414;
  --xy-border-soft: #1F280C;
  --xy-border-strong: #3F4B22;
  --xy-primary: #A3E635;
  --xy-primary-d: #84CC16;
  --xy-primary-tint: rgba(132, 204, 22, 0.16);
  --xy-primary-tint-2: rgba(132, 204, 22, 0.08);
  --xy-accent-tint: rgba(250, 204, 21, 0.14);
  --xy-shadow: 0 6px 18px rgba(0, 0, 0, 0.36);
  --xy-shadow-lg: 0 20px 44px rgba(0, 0, 0, 0.44);
  --xy-bg-glow: radial-gradient(circle at 72% 32%, rgba(132, 204, 22, 0.20) 0%, transparent 55%),
                radial-gradient(circle at 18% 80%, rgba(250, 204, 21, 0.14) 0%, transparent 55%);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -webkit-tap-highlight-color: transparent;
  scroll-behavior: smooth;
}
body {
  font-family: var(--xy-font);
  font-size: 15px;
  line-height: 1.65;
  color: var(--xy-text);
  background: var(--xy-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "tnum" on, "lnum" on;
}
a {
  color: var(--xy-primary-d);
  text-decoration: none;
  transition: color var(--xy-tx-fast);
}
a:hover { color: var(--xy-text); }
img, svg, video { max-width: 100%; height: auto; display: block; }
button {
  font-family: inherit;
  font-size: inherit;
  background: transparent;
  border: 0;
  padding: 0;
  cursor: pointer;
  color: inherit;
}
input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }
ul, ol { padding-left: 1.4em; margin: 0.6em 0; }
p { margin: 0.7em 0; }
hr {
  border: 0;
  border-top: 1px solid var(--xy-border);
  margin: 2em 0;
}

/* ---------- 2. Banner / announcement bar ---------- */
.xy-banner {
  height: var(--xy-banner-h);
  background: var(--xy-bg-banner);
  color: #FFFEF7;
  font-size: 12.5px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 16px;
  letter-spacing: 0.02em;
  position: relative;
  overflow: hidden;
}
.xy-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 6px,
      rgba(255, 255, 255, 0.04) 6px,
      rgba(255, 255, 255, 0.04) 7px
    );
  pointer-events: none;
}
.xy-banner__inner {
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
  z-index: 1;
  flex-wrap: wrap;
  justify-content: center;
}
.xy-banner__star {
  color: #FFF8C5;
  display: inline-flex;
}
.xy-banner__txt { font-weight: 700; }
.xy-banner__sep { opacity: 0.7; }
.xy-banner__lk {
  color: #FFFEF7;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  font-weight: 600;
}
.xy-banner__lk:hover { color: #FFF8C5; }

/* ---------- 3. Header ---------- */
.xy-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: saturate(160%) blur(12px);
  -webkit-backdrop-filter: saturate(160%) blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--xy-tx), box-shadow var(--xy-tx);
}
html[data-theme="dark"] .xy-header { background: rgba(10, 15, 2, 0.84); }
.xy-header.is-scrolled {
  border-bottom-color: var(--xy-border);
  box-shadow: var(--xy-shadow-sm);
}
.xy-header__bar {
  width: 100%;
  height: var(--xy-header-h);
  display: flex;
  align-items: center;
}
.xy-header__inner {
  width: 100%;
  max-width: var(--xy-shell-max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 20px;
}
.xy-header__l { display: flex; align-items: center; gap: 12px; }
.xy-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--xy-text);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -0.01em;
}
.xy-brand:hover { color: var(--xy-text); }
.xy-brand__mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
}
.xy-brand__name { font-feature-settings: "ss01"; }
.xy-brand__dot {
  color: var(--xy-primary-d);
  font-weight: 600;
  font-size: 14px;
  margin-left: 1px;
}
.xy-brand__ver {
  display: inline-block;
  font-size: 10.5px;
  font-weight: 600;
  font-family: var(--xy-mono);
  color: var(--xy-primary-d);
  background: var(--xy-primary-tint);
  border: 1px solid color-mix(in srgb, var(--xy-primary) 36%, transparent);
  padding: 1px 6px;
  border-radius: 999px;
  margin-left: 8px;
  letter-spacing: 0.04em;
}

.xy-topnav {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: 12px;
  flex: 1;
}
.xy-topnav__item {
  position: relative;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--xy-text-muted);
  padding: 7px 11px;
  border-radius: 7px;
  transition: color var(--xy-tx-fast), background var(--xy-tx-fast);
}
.xy-topnav__item:hover {
  color: var(--xy-text);
  background: var(--xy-bg-soft);
}
.xy-topnav__item.is-active { color: var(--xy-text); font-weight: 600; }
.xy-topnav__item.is-active::after {
  content: "";
  position: absolute;
  left: 11px;
  right: 11px;
  bottom: -22px;
  height: 2px;
  background: linear-gradient(90deg, var(--xy-primary), var(--xy-accent));
  border-radius: 2px;
}

.xy-header__r {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.xy-search-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  height: 34px;
  padding: 0 10px;
  border: 1px solid var(--xy-border);
  border-radius: 8px;
  background: var(--xy-bg);
  color: var(--xy-text-muted);
  font-size: 12.5px;
  cursor: pointer;
  min-width: 200px;
  transition: border-color var(--xy-tx-fast), background var(--xy-tx-fast);
}
.xy-search-btn:hover {
  border-color: var(--xy-border-strong);
  background: var(--xy-bg-elev);
}
.xy-search-btn__ic { color: var(--xy-text-subtle); display: inline-flex; }
.xy-search-btn__txt { flex: 1; text-align: left; }
.xy-search-btn__kbd {
  font-family: var(--xy-mono);
  font-size: 10.5px;
  background: var(--xy-bg-soft);
  border: 1px solid var(--xy-border);
  border-radius: 4px;
  padding: 1px 5px;
  color: var(--xy-text-muted);
}

.xy-iconbtn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  color: var(--xy-text-muted);
  transition: background var(--xy-tx-fast), color var(--xy-tx-fast);
}
.xy-iconbtn:hover {
  background: var(--xy-bg-soft);
  color: var(--xy-text);
}
.xy-iconbtn .xy-th-l { display: inline-flex; }
.xy-iconbtn .xy-th-d { display: none; }
html[data-theme="dark"] .xy-iconbtn .xy-th-l { display: none; }
html[data-theme="dark"] .xy-iconbtn .xy-th-d { display: inline-flex; }

.xy-lang { position: relative; }
.xy-lang__btn {
  width: auto;
  padding: 0 9px;
  gap: 5px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--xy-text-soft);
}
.xy-lang__menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 168px;
  background: var(--xy-bg);
  border: 1px solid var(--xy-border);
  border-radius: 10px;
  box-shadow: var(--xy-shadow-lg);
  padding: 4px;
  margin: 0;
  list-style: none;
  display: none;
  z-index: 80;
}
.xy-lang:hover .xy-lang__menu,
.xy-lang:focus-within .xy-lang__menu { display: block; }
.xy-lang__menu li { padding: 0; }
.xy-lang__menu a {
  display: block;
  padding: 7px 11px;
  border-radius: 7px;
  font-size: 13px;
  color: var(--xy-text-soft);
}
.xy-lang__menu a:hover { background: var(--xy-bg-soft); color: var(--xy-text); }
.xy-lang__menu a.is-current {
  color: var(--xy-primary-d);
  background: var(--xy-primary-tint-2);
  font-weight: 600;
}

.xy-cta {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  height: 34px;
  padding: 0 13px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  color: #1A2E05;
  background: linear-gradient(120deg, var(--xy-primary-l), var(--xy-primary));
  border: 1px solid color-mix(in srgb, var(--xy-primary-d) 30%, transparent);
  box-shadow: 0 2px 0 0 var(--xy-primary-d);
  transition: transform var(--xy-tx-fast), box-shadow var(--xy-tx-fast);
}
.xy-cta:hover {
  color: #1A2E05;
  transform: translateY(-1px);
  box-shadow: 0 3px 0 0 var(--xy-primary-d), 0 5px 14px rgba(132, 204, 22, 0.32);
}

/* mobile-only menu button hidden on desktop */
.xy-mob { display: none; }

/* ---------- 4. Shell layout ---------- */
.xy-shell {
  width: 100%;
  max-width: var(--xy-shell-max);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 32px;
  align-items: flex-start;
}
.xy-shell--with-sidebar { padding-top: 12px; }
.xy-main {
  flex: 1;
  min-width: 0;
  padding: 24px 0 64px;
}
.xy-main--full {
  max-width: var(--xy-shell-max);
  margin: 0 auto;
  width: 100%;
  padding: 0 0 64px;
}

/* ---------- 5. Sidebar ---------- */
.xy-sidebar {
  width: var(--xy-sidebar-w);
  flex-shrink: 0;
  position: sticky;
  top: calc(var(--xy-header-h) + 12px);
  align-self: flex-start;
  height: calc(100vh - var(--xy-header-h) - 24px - var(--xy-banner-h));
  overflow: hidden;
  padding: 16px 0 0;
}
.xy-sidebar__inner {
  height: 100%;
  overflow-y: auto;
  padding-right: 8px;
  scrollbar-width: thin;
  scrollbar-color: var(--xy-border-strong) transparent;
}
.xy-sidebar__inner::-webkit-scrollbar { width: 6px; }
.xy-sidebar__inner::-webkit-scrollbar-thumb { background: var(--xy-border); border-radius: 3px; }
.xy-sidebar__inner::-webkit-scrollbar-thumb:hover { background: var(--xy-border-strong); }

.xy-sidebar__filterwrap {
  position: relative;
  margin-bottom: 14px;
}
.xy-sidebar__filter-ic {
  position: absolute;
  left: 9px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--xy-text-subtle);
  display: inline-flex;
}
.xy-sidebar__filter {
  width: 100%;
  height: 32px;
  padding: 0 9px 0 30px;
  border: 1px solid var(--xy-border);
  border-radius: 7px;
  background: var(--xy-bg);
  font-size: 12.5px;
  outline: none;
  transition: border-color var(--xy-tx-fast), background var(--xy-tx-fast);
}
.xy-sidebar__filter:focus {
  border-color: var(--xy-primary);
  background: var(--xy-bg);
  box-shadow: 0 0 0 3px var(--xy-primary-tint);
}

.xy-sidebar__nav { display: flex; flex-direction: column; gap: 6px; }
.xy-sidebar__group { padding: 4px 0; }
.xy-sidebar__h {
  font-size: 12px;
  font-weight: 700;
  color: var(--xy-text);
  letter-spacing: 0.02em;
  padding: 6px 9px;
  text-transform: none;
  display: flex;
  align-items: center;
  gap: 6px;
}
.xy-sidebar__h--btn {
  width: 100%;
  text-align: left;
  cursor: pointer;
  border-radius: 6px;
}
.xy-sidebar__h--btn:hover { background: var(--xy-bg-soft); }
.xy-sidebar__chev {
  color: var(--xy-text-muted);
  display: inline-flex;
  transition: transform var(--xy-tx);
}
.xy-sidebar__group.is-collapsed .xy-sidebar__chev { transform: rotate(-90deg); }
.xy-sidebar__group.is-collapsed .xy-sidebar__list--inner { display: none; }
.xy-sidebar__count {
  margin-left: auto;
  font-size: 10.5px;
  font-family: var(--xy-mono);
  color: var(--xy-text-muted);
  background: var(--xy-bg-soft);
  border-radius: 999px;
  padding: 1px 7px;
}
.xy-sidebar__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.xy-sidebar__list--inner {
  border-left: 1px solid var(--xy-border);
  margin-left: 14px;
  padding-left: 6px;
  margin-top: 2px;
}
.xy-sidebar__lk {
  display: block;
  padding: 5px 9px;
  font-size: 13px;
  color: var(--xy-text-muted);
  border-radius: 6px;
  border-left: 2px solid transparent;
  margin-left: -8px;
  padding-left: 11px;
  transition: color var(--xy-tx-fast), background var(--xy-tx-fast), border-color var(--xy-tx-fast);
  line-height: 1.45;
}
.xy-sidebar__lk:hover {
  color: var(--xy-text);
  background: var(--xy-bg-soft);
}
.xy-sidebar__lk.is-active {
  color: var(--xy-primary-d);
  font-weight: 600;
  border-left-color: var(--xy-primary);
  background: var(--xy-primary-tint-2);
}
.xy-sidebar__lk--cat { font-style: italic; color: var(--xy-text-subtle); }

/* ---------- 6. Hero ---------- */
.xy-hero {
  position: relative;
  padding: 84px 24px 72px;
  text-align: center;
  overflow: hidden;
  border-bottom: 1px solid var(--xy-border-soft);
}
.xy-hero__glow {
  position: absolute;
  inset: 0;
  background: var(--xy-bg-glow);
  pointer-events: none;
  z-index: 0;
}
.xy-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(132, 204, 22, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(132, 204, 22, 0.06) 1px, transparent 1px);
  background-size: 36px 36px;
  background-position: 50% 0;
  mask-image: radial-gradient(ellipse 60% 60% at 50% 38%, black 50%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 60% 60% at 50% 38%, black 50%, transparent 100%);
  z-index: 0;
}
.xy-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 880px;
  margin: 0 auto;
}
.xy-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--xy-mono);
  color: var(--xy-primary-d);
  background: var(--xy-primary-tint);
  border: 1px solid color-mix(in srgb, var(--xy-primary) 36%, transparent);
  padding: 4px 11px;
  border-radius: 999px;
  margin-bottom: 22px;
  letter-spacing: 0.04em;
}
.xy-hero__badge-dot {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--xy-primary-d);
  border-radius: 999px;
  box-shadow: 0 0 0 3px var(--xy-primary-tint);
}
.xy-hero__h1 {
  font-size: clamp(38px, 6.4vw, 62px);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.025em;
  background: linear-gradient(110deg, var(--xy-text) 18%, var(--xy-primary-d) 58%, var(--xy-accent-d) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin: 0 0 16px;
}
.xy-hero__sub {
  font-size: 18px;
  line-height: 1.6;
  color: var(--xy-text-soft);
  max-width: 660px;
  margin: 0 auto 26px;
}
.xy-hero__cta {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 28px;
  flex-wrap: wrap;
}
.xy-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 42px;
  padding: 0 18px;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.005em;
  transition: transform var(--xy-tx-fast), box-shadow var(--xy-tx-fast), background var(--xy-tx-fast);
  border: 1px solid transparent;
}
.xy-btn--primary {
  color: #1A2E05;
  background: linear-gradient(120deg, var(--xy-primary-l), var(--xy-primary));
  border-color: color-mix(in srgb, var(--xy-primary-d) 30%, transparent);
  box-shadow: 0 2px 0 0 var(--xy-primary-d), 0 6px 22px rgba(132, 204, 22, 0.28);
}
.xy-btn--primary:hover {
  color: #1A2E05;
  transform: translateY(-1px);
  box-shadow: 0 3px 0 0 var(--xy-primary-d), 0 10px 28px rgba(132, 204, 22, 0.38);
}
.xy-btn--ghost {
  color: var(--xy-text);
  background: var(--xy-bg);
  border-color: var(--xy-border-strong);
}
.xy-btn--ghost:hover {
  color: var(--xy-text);
  background: var(--xy-bg-soft);
  border-color: var(--xy-text-muted);
}

.xy-hero__search {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 50px;
  max-width: 540px;
  margin: 0 auto 24px;
  background: var(--xy-bg);
  border: 1px solid var(--xy-border);
  border-radius: 12px;
  padding: 0 14px;
  box-shadow: var(--xy-shadow);
  transition: border-color var(--xy-tx-fast), box-shadow var(--xy-tx-fast);
}
.xy-hero__search:focus-within {
  border-color: var(--xy-primary);
  box-shadow: 0 0 0 4px var(--xy-primary-tint), var(--xy-shadow);
}
.xy-hero__search-ic { color: var(--xy-text-subtle); display: inline-flex; }
.xy-hero__search-in {
  flex: 1;
  height: 100%;
  border: 0;
  background: transparent;
  outline: none;
  font-size: 14.5px;
  color: var(--xy-text);
}
.xy-hero__search-kbd {
  font-family: var(--xy-mono);
  font-size: 11px;
  background: var(--xy-bg-soft);
  border: 1px solid var(--xy-border);
  border-radius: 5px;
  padding: 2px 7px;
  color: var(--xy-text-muted);
}
.xy-hero__meta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
  margin-top: 14px;
}
.xy-hero__metaitem {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  font-weight: 500;
  color: var(--xy-text-muted);
  font-family: var(--xy-mono);
}
.xy-hero__metaitem svg { color: var(--xy-primary-d); }

/* ---------- 7. Section / cards ---------- */
.xy-section {
  padding: 56px 0 16px;
  position: relative;
}
.xy-section--alt { background: var(--xy-bg-soft-2); padding: 56px 0; }
.xy-main--full .xy-section { padding-left: 24px; padding-right: 24px; }
.xy-main--full .xy-section--alt { padding-left: 0; padding-right: 0; }
.xy-main--full .xy-section--alt > .xy-section__head,
.xy-main--full .xy-section--alt > .xy-cardgrid,
.xy-main--full .xy-section--alt > .xy-faq,
.xy-main--full .xy-section--alt > .xy-reflist,
.xy-main--full .xy-section--alt > .xy-postlist {
  max-width: var(--xy-shell-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}
.xy-section__head { margin-bottom: 28px; max-width: 760px; }
.xy-section__head--withaction {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  max-width: none;
  gap: 24px;
  flex-wrap: wrap;
}
.xy-section__h-row { display: flex; align-items: baseline; gap: 14px; flex-wrap: wrap; }
.xy-section__kicker {
  font-size: 11.5px;
  font-weight: 700;
  font-family: var(--xy-mono);
  color: var(--xy-primary-d);
  background: var(--xy-primary-tint-2);
  border: 1px solid color-mix(in srgb, var(--xy-primary) 22%, transparent);
  padding: 3px 10px;
  border-radius: 999px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  display: inline-flex;
  align-items: center;
}
.xy-section__h {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.018em;
  line-height: 1.2;
  margin: 8px 0 0;
  color: var(--xy-text);
}
.xy-section__sub {
  font-size: 14.5px;
  color: var(--xy-text-soft);
  line-height: 1.65;
  max-width: 680px;
  margin: 10px 0 0;
}
.xy-section__action {
  font-size: 13px;
  font-weight: 600;
  color: var(--xy-primary-d);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.xy-section__action:hover { color: var(--xy-primary); }

.xy-cardgrid {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.xy-cardgrid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.xy-card {
  position: relative;
  display: flex;
  flex-direction: column;
  padding: 22px 22px 18px;
  background: var(--xy-bg);
  border: 1px solid var(--xy-border);
  border-radius: var(--xy-radius-lg);
  color: var(--xy-text);
  transition: transform var(--xy-tx), border-color var(--xy-tx-fast), box-shadow var(--xy-tx);
  overflow: hidden;
}
.xy-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--xy-primary-tint-2) 0%, transparent 60%);
  opacity: 0;
  transition: opacity var(--xy-tx);
  pointer-events: none;
}
.xy-card:hover {
  transform: translateY(-2px);
  border-color: color-mix(in srgb, var(--xy-primary) 42%, var(--xy-border));
  box-shadow: var(--xy-shadow);
  color: var(--xy-text);
}
.xy-card:hover::before { opacity: 1; }
.xy-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}
.xy-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  background: var(--xy-primary-tint);
  color: var(--xy-primary-d);
  border: 1px solid color-mix(in srgb, var(--xy-primary) 30%, transparent);
}
.xy-card__num {
  font-family: var(--xy-mono);
  font-size: 11.5px;
  font-weight: 600;
  color: var(--xy-text-subtle);
  letter-spacing: 0.04em;
}
.xy-card__title {
  position: relative;
  z-index: 1;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 5px;
  color: var(--xy-text);
}
.xy-card__desc {
  position: relative;
  z-index: 1;
  font-size: 13.2px;
  color: var(--xy-text-muted);
  line-height: 1.6;
  margin: 0;
  flex: 1;
}
.xy-card__list {
  position: relative;
  z-index: 1;
  list-style: none;
  padding: 0;
  margin: 12px 0 4px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  border-top: 1px dashed var(--xy-border);
  padding-top: 10px;
}
.xy-card__list li {
  font-size: 12.5px;
  color: var(--xy-text-soft);
  padding-left: 14px;
  position: relative;
  line-height: 1.45;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.xy-card__list li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--xy-primary-d);
  font-weight: 700;
}
.xy-card__more {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-top: 14px;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--xy-primary-d);
  position: relative;
  z-index: 1;
}
.xy-card__count {
  margin-top: 12px;
  font-size: 11.5px;
  font-family: var(--xy-mono);
  color: var(--xy-text-muted);
  position: relative;
  z-index: 1;
}

/* ref list (more cats) */
.xy-reflist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.xy-reflist__item { padding: 0; }
.xy-reflist__lk {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid var(--xy-border);
  border-radius: 9px;
  background: var(--xy-bg);
  color: var(--xy-text);
  transition: border-color var(--xy-tx-fast), background var(--xy-tx-fast);
}
.xy-reflist__lk:hover {
  border-color: color-mix(in srgb, var(--xy-primary) 50%, var(--xy-border));
  background: var(--xy-primary-tint-2);
  color: var(--xy-text);
}
.xy-reflist__ic {
  display: inline-flex;
  width: 30px;
  height: 30px;
  align-items: center;
  justify-content: center;
  border-radius: 7px;
  background: var(--xy-primary-tint);
  color: var(--xy-primary-d);
  flex-shrink: 0;
}
.xy-reflist__name { font-weight: 600; font-size: 14px; flex-shrink: 0; }
.xy-reflist__desc { font-size: 12.5px; color: var(--xy-text-muted); flex: 1; line-height: 1.45; }
.xy-reflist__arr { color: var(--xy-text-subtle); display: inline-flex; flex-shrink: 0; }

/* post list */
.xy-postlist {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.xy-postlist__item {
  padding: 14px 4px;
  border-bottom: 1px dashed var(--xy-border);
}
.xy-postlist__item:first-child { padding-top: 6px; }
.xy-postlist__title {
  display: block;
  font-size: 15.5px;
  font-weight: 600;
  color: var(--xy-text);
  letter-spacing: -0.005em;
  line-height: 1.45;
}
.xy-postlist__title:hover { color: var(--xy-primary-d); }
.xy-postlist__meta {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-top: 4px;
  font-size: 12px;
  color: var(--xy-text-muted);
  font-family: var(--xy-mono);
}
.xy-postlist__date::before {
  content: "•";
  margin-right: 7px;
  color: var(--xy-primary-d);
}
.xy-postlist__chip {
  display: inline-flex;
  font-size: 11px;
  font-weight: 600;
  padding: 1px 8px;
  border-radius: 999px;
  background: var(--xy-primary-tint-2);
  color: var(--xy-primary-d);
  border: 1px solid color-mix(in srgb, var(--xy-primary) 22%, transparent);
}
.xy-postlist__desc {
  margin: 5px 0 0;
  font-size: 13px;
  color: var(--xy-text-muted);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* faq */
.xy-faq {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 920px;
}
.xy-faq__item {
  background: var(--xy-bg);
  border: 1px solid var(--xy-border);
  border-radius: 10px;
  padding: 4px 18px;
  transition: border-color var(--xy-tx-fast), box-shadow var(--xy-tx-fast);
}
.xy-faq__item[open] {
  border-color: color-mix(in srgb, var(--xy-primary) 40%, var(--xy-border));
  box-shadow: 0 4px 14px rgba(132, 204, 22, 0.08);
}
.xy-faq__q {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 14px 0;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--xy-text);
}
.xy-faq__q::-webkit-details-marker { display: none; }
.xy-faq__qic {
  display: inline-flex;
  color: var(--xy-text-subtle);
  transition: transform var(--xy-tx);
  flex-shrink: 0;
}
.xy-faq__item[open] .xy-faq__qic { transform: rotate(180deg); color: var(--xy-primary-d); }
.xy-faq__a {
  font-size: 13.5px;
  color: var(--xy-text-soft);
  padding: 0 0 14px;
  line-height: 1.7;
  border-top: 1px dashed var(--xy-border);
  padding-top: 12px;
  margin-top: -2px;
}
.xy-faq__a p { margin: 0 0 6px; }
.xy-faq__a a { color: var(--xy-primary-d); font-weight: 600; }

/* CTA band */
.xy-cta-band { padding-top: 24px; }
.xy-cta-band__inner {
  max-width: var(--xy-shell-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: linear-gradient(120deg, var(--xy-primary-tint) 0%, var(--xy-accent-tint) 100%);
  border: 1px solid color-mix(in srgb, var(--xy-primary) 28%, transparent);
  border-radius: 18px;
  padding: 28px 32px;
  position: relative;
  overflow: hidden;
}
.xy-cta-band__inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(rgba(132, 204, 22, 0.08) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(132, 204, 22, 0.08) 1px, transparent 1px);
  background-size: 24px 24px;
  pointer-events: none;
}
.xy-cta-band__txt { position: relative; z-index: 1; max-width: 560px; }
.xy-cta-band__h {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
  color: var(--xy-text);
}
.xy-cta-band__sub { font-size: 13.5px; color: var(--xy-text-soft); margin: 0; line-height: 1.6; }
.xy-cta-band__btns {
  position: relative;
  z-index: 1;
  display: flex;
  gap: 10px;
  flex-shrink: 0;
  flex-wrap: wrap;
}

/* ---------- 8. Article (post + page) ---------- */
.xy-article {
  width: 100%;
  max-width: 100%;
  display: flex;
  flex-direction: column;
}
.xy-crumb {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12.5px;
  color: var(--xy-text-muted);
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.xy-crumb a { color: var(--xy-text-muted); }
.xy-crumb a:hover { color: var(--xy-primary-d); }
.xy-crumb__sep { color: var(--xy-text-subtle); }
.xy-crumb__cur { color: var(--xy-text); font-weight: 600; }

.xy-article__head { padding-bottom: 16px; border-bottom: 1px solid var(--xy-border-soft); margin-bottom: 24px; }
.xy-article__h1 {
  font-size: clamp(28px, 4vw, 38px);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.022em;
  color: var(--xy-text);
  margin: 4px 0 10px;
}
.xy-article__lede {
  font-size: 16.5px;
  color: var(--xy-text-soft);
  line-height: 1.65;
  margin: 0 0 14px;
  max-width: 720px;
}
.xy-article__meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 12.5px;
  color: var(--xy-text-muted);
  font-family: var(--xy-mono);
}
.xy-article__meta-item {}
.xy-article__meta-sep { color: var(--xy-text-subtle); }
.xy-chip {
  display: inline-flex;
  font-size: 11.5px;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 999px;
  background: var(--xy-primary-tint-2);
  color: var(--xy-primary-d);
  border: 1px solid color-mix(in srgb, var(--xy-primary) 22%, transparent);
}

.xy-article__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--xy-toc-w);
  gap: 48px;
  align-items: start;
}

/* ---------- 9. Prose typography ---------- */
.xy-prose {
  max-width: var(--xy-content-max);
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--xy-text);
  word-wrap: break-word;
}
.xy-article--page .xy-prose,
.xy-article--list .xy-prose { max-width: 880px; }
.xy-prose h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.012em;
  margin: 2.2em 0 0.7em;
  padding-top: 0.4em;
  position: relative;
  scroll-margin-top: calc(var(--xy-header-h) + 24px);
  color: var(--xy-text);
}
.xy-prose h2::before {
  content: "#";
  position: absolute;
  left: -22px;
  top: 0.3em;
  font-size: 16px;
  color: var(--xy-primary);
  font-family: var(--xy-mono);
  opacity: 0;
  transition: opacity var(--xy-tx-fast);
}
.xy-prose h2:hover::before { opacity: 1; }
.xy-prose h3 {
  font-size: 17.5px;
  font-weight: 700;
  margin: 1.7em 0 0.5em;
  scroll-margin-top: calc(var(--xy-header-h) + 24px);
  color: var(--xy-text);
}
.xy-prose h4 { font-size: 15.5px; font-weight: 700; margin: 1.4em 0 0.4em; }
.xy-prose p { margin: 0.85em 0; }
.xy-prose ul, .xy-prose ol { margin: 0.85em 0; padding-left: 1.6em; }
.xy-prose li { margin: 0.25em 0; }
.xy-prose li::marker { color: var(--xy-primary-d); }
.xy-prose strong { color: var(--xy-text); font-weight: 700; }
.xy-prose em { font-style: italic; }
.xy-prose blockquote {
  margin: 1.2em 0;
  padding: 12px 16px;
  background: var(--xy-primary-tint-2);
  border-left: 3px solid var(--xy-primary);
  border-radius: 0 8px 8px 0;
  color: var(--xy-text-soft);
  font-style: normal;
}
.xy-prose blockquote p:first-child { margin-top: 0; }
.xy-prose blockquote p:last-child { margin-bottom: 0; }
.xy-prose code {
  font-family: var(--xy-mono);
  font-size: 0.86em;
  padding: 2px 6px;
  background: var(--xy-bg-soft);
  border: 1px solid var(--xy-border);
  border-radius: 4px;
  color: var(--xy-primary-d);
}
.xy-prose pre {
  margin: 1.2em 0;
  padding: 16px 18px;
  background: #1A2208;
  color: #E9F5C4;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
  border: 1px solid #2A3414;
  position: relative;
}
.xy-prose pre code {
  background: transparent;
  border: 0;
  padding: 0;
  color: inherit;
  font-size: inherit;
}
.xy-prose a {
  color: var(--xy-primary-d);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  font-weight: 500;
}
.xy-prose a:hover { color: var(--xy-text); text-decoration-color: var(--xy-primary); }
.xy-prose table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.4em 0;
  font-size: 13.5px;
  border: 1px solid var(--xy-border);
  border-radius: 8px;
  overflow: hidden;
}
.xy-prose th, .xy-prose td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--xy-border);
  vertical-align: top;
}
.xy-prose th {
  background: var(--xy-bg-soft);
  font-weight: 700;
  font-size: 13px;
  color: var(--xy-text);
  letter-spacing: 0.005em;
}
.xy-prose tr:nth-child(even) td { background: var(--xy-bg-soft-2); }
.xy-prose tr:last-child td { border-bottom: 0; }
.xy-prose img { border-radius: 8px; margin: 1.2em 0; }
.xy-prose hr {
  border: 0;
  border-top: 1px dashed var(--xy-border);
  margin: 2em 0;
}

/* ---------- 10. TOC ---------- */
.xy-toc {
  position: sticky;
  top: calc(var(--xy-header-h) + 24px);
  align-self: flex-start;
  width: var(--xy-toc-w);
  max-height: calc(100vh - var(--xy-header-h) - 48px);
  overflow-y: auto;
  font-size: 13px;
  scrollbar-width: thin;
}
.xy-toc__inner {}
.xy-toc__h {
  font-size: 11.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--xy-text-subtle);
  margin: 0 0 10px;
}
.xy-toc__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1px;
  border-left: 1px solid var(--xy-border);
  padding-left: 12px;
}
.xy-toc__item a {
  display: block;
  padding: 4px 6px 4px 4px;
  font-size: 12.5px;
  color: var(--xy-text-muted);
  border-radius: 4px;
  position: relative;
  line-height: 1.45;
  transition: color var(--xy-tx-fast);
}
.xy-toc__item a:hover { color: var(--xy-text); }
.xy-toc__item a.is-active {
  color: var(--xy-primary-d);
  font-weight: 600;
}
.xy-toc__item a.is-active::before {
  content: "";
  position: absolute;
  left: -13px;
  top: 5px;
  bottom: 5px;
  width: 2px;
  background: var(--xy-primary);
  border-radius: 2px;
}
.xy-toc__item--lv3 a { padding-left: 16px; font-size: 12px; }
.xy-toc__more { margin-top: 22px; padding-top: 16px; border-top: 1px dashed var(--xy-border); }
.xy-toc__edit {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px dashed var(--xy-border);
}
.xy-toc__edit-lk {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: var(--xy-text-muted);
  font-weight: 500;
}
.xy-toc__edit-lk:hover { color: var(--xy-primary-d); }

/* ---------- 11. Prev/next ---------- */
.xy-prevnext {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-top: 36px;
}
.xy-prevnext__pl { display: block; }
.xy-prevnext__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 18px;
  border: 1px solid var(--xy-border);
  border-radius: 10px;
  background: var(--xy-bg);
  color: var(--xy-text);
  transition: border-color var(--xy-tx-fast), background var(--xy-tx-fast);
}
.xy-prevnext__item:hover {
  border-color: color-mix(in srgb, var(--xy-primary) 50%, var(--xy-border));
  background: var(--xy-primary-tint-2);
  color: var(--xy-text);
}
.xy-prevnext__next { text-align: right; }
.xy-prevnext__lab {
  font-size: 12px;
  color: var(--xy-text-muted);
  font-weight: 600;
  font-family: var(--xy-mono);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.xy-prevnext__t { font-size: 14px; font-weight: 600; line-height: 1.4; color: var(--xy-text); }

.xy-divider {
  height: 1px;
  background: var(--xy-border);
  margin: 36px 0 18px;
}
.xy-article__foot {
  font-size: 12.5px;
  color: var(--xy-text-muted);
  padding-bottom: 4px;
}

/* ---------- 12. Pager ---------- */
.xy-pager {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px;
  justify-content: center;
  margin: 36px 0 12px;
}
.xy-pager__btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  height: 34px;
  padding: 0 12px;
  border: 1px solid var(--xy-border);
  border-radius: 7px;
  background: var(--xy-bg);
  color: var(--xy-text);
  font-size: 13px;
  font-weight: 600;
  transition: border-color var(--xy-tx-fast), background var(--xy-tx-fast);
}
.xy-pager__btn:hover {
  border-color: var(--xy-primary);
  background: var(--xy-primary-tint-2);
  color: var(--xy-text);
}
.xy-pager__btn.is-disabled {
  opacity: 0.5;
  pointer-events: none;
}
.xy-pager__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 34px;
  height: 34px;
  padding: 0 8px;
  border: 1px solid var(--xy-border);
  border-radius: 7px;
  background: var(--xy-bg);
  color: var(--xy-text-soft);
  font-size: 13px;
  font-weight: 600;
  font-family: var(--xy-mono);
}
.xy-pager__num:hover {
  border-color: var(--xy-primary);
  background: var(--xy-primary-tint-2);
  color: var(--xy-text);
}
.xy-pager__num.is-current {
  background: linear-gradient(120deg, var(--xy-primary-l), var(--xy-primary));
  color: #1A2E05;
  border-color: var(--xy-primary-d);
}

/* ---------- 13. 404 ---------- */
.xy-404 {
  max-width: 540px;
  margin: 80px auto;
  text-align: center;
  padding: 0 24px;
}
.xy-404__code {
  font-size: 92px;
  font-weight: 800;
  font-family: var(--xy-mono);
  background: linear-gradient(120deg, var(--xy-primary), var(--xy-accent));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.04em;
  line-height: 1;
}
.xy-404__title { font-size: 24px; font-weight: 700; margin: 14px 0 8px; }
.xy-404__body { font-size: 14.5px; color: var(--xy-text-muted); margin: 0 0 24px; line-height: 1.65; }

/* ---------- 14. Footer ---------- */
.xy-footer {
  margin-top: 64px;
  background: var(--xy-bg-soft-2);
  border-top: 1px solid var(--xy-border);
}
.xy-footer__top {
  max-width: var(--xy-shell-max);
  margin: 0 auto;
  padding: 56px 24px 36px;
  display: grid;
  grid-template-columns: 1.6fr 4fr;
  gap: 48px;
}
.xy-footer__brand { max-width: 320px; }
.xy-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  color: var(--xy-text);
  font-weight: 700;
  font-size: 17px;
}
.xy-footer__logo:hover { color: var(--xy-text); }
.xy-footer__logo-mark { display: inline-flex; }
.xy-footer__tag {
  font-size: 13px;
  color: var(--xy-text-muted);
  line-height: 1.7;
  margin: 14px 0 16px;
}
.xy-footer__chips { display: flex; flex-wrap: wrap; gap: 6px; }
.xy-footer__chip {
  font-size: 11.5px;
  font-family: var(--xy-mono);
  font-weight: 600;
  color: var(--xy-primary-d);
  background: var(--xy-primary-tint-2);
  border: 1px solid color-mix(in srgb, var(--xy-primary) 22%, transparent);
  padding: 2px 9px;
  border-radius: 999px;
}
.xy-footer__cols {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}
.xy-footer__col {}
.xy-footer__h {
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--xy-text);
  margin: 0 0 10px;
}
.xy-footer__col ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.xy-footer__col a {
  font-size: 13px;
  color: var(--xy-text-muted);
  transition: color var(--xy-tx-fast);
}
.xy-footer__col a:hover { color: var(--xy-primary-d); }
.xy-footer__lang { display: flex; flex-wrap: wrap; gap: 8px; }
.xy-footer__lang li { padding: 0; }
.xy-footer__lang a {
  display: inline-flex;
  font-size: 11.5px;
  font-weight: 600;
  font-family: var(--xy-mono);
  padding: 2px 8px;
  border: 1px solid var(--xy-border);
  border-radius: 999px;
}
.xy-footer__lang a.is-current {
  color: var(--xy-primary-d);
  background: var(--xy-primary-tint-2);
  border-color: color-mix(in srgb, var(--xy-primary) 28%, transparent);
}

.xy-footer__bot {
  border-top: 1px solid var(--xy-border);
  padding: 18px 24px 24px;
}
.xy-footer__line {
  max-width: var(--xy-shell-max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}
.xy-footer__rights { font-size: 12px; color: var(--xy-text-muted); font-family: var(--xy-mono); }
.xy-footer__legal { display: flex; gap: 14px; }
.xy-footer__legal a { font-size: 12px; color: var(--xy-text-muted); }
.xy-footer__legal a:hover { color: var(--xy-primary-d); }
.xy-footer__risk {
  max-width: var(--xy-shell-max);
  margin: 14px auto 0;
  font-size: 11.5px;
  line-height: 1.7;
  color: var(--xy-text-subtle);
  text-align: center;
}

/* ---------- 15. Responsive ---------- */
@media (max-width: 1140px) {
  .xy-cardgrid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .xy-article__body { grid-template-columns: minmax(0, 1fr); }
  .xy-toc { display: none; }
  .xy-search-btn { min-width: 0; }
  .xy-search-btn__txt { display: none; }
  .xy-search-btn__kbd { display: none; }
}
@media (max-width: 960px) {
  .xy-topnav { display: none; }
  .xy-mob { display: inline-flex; }
  .xy-shell { gap: 0; }
  .xy-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    height: 100vh;
    background: var(--xy-bg);
    border-right: 1px solid var(--xy-border);
    transform: translateX(-100%);
    transition: transform var(--xy-tx);
    z-index: 70;
    padding: 70px 16px 24px;
  }
  .xy-sidebar.is-open { transform: translateX(0); box-shadow: var(--xy-shadow-lg); }
  body.xy-mobnav-open::after {
    content: "";
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 65;
  }
  .xy-cardgrid--3 { grid-template-columns: 1fr; }
  .xy-reflist { grid-template-columns: 1fr; }
  .xy-footer__top { grid-template-columns: 1fr; gap: 28px; }
  .xy-footer__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .xy-cta-band__inner { flex-direction: column; align-items: stretch; text-align: left; }
  .xy-section__head--withaction { flex-direction: column; align-items: flex-start; }
  .xy-prevnext { grid-template-columns: 1fr; }
  .xy-hero { padding: 56px 20px 48px; }
  .xy-hero__h1 { font-size: 34px; }
  .xy-hero__sub { font-size: 16px; }
  .xy-banner { font-size: 11.5px; padding: 0 12px; }
}
@media (max-width: 600px) {
  .xy-header__inner { padding: 0 16px; gap: 10px; }
  .xy-brand__ver { display: none; }
  .xy-cta { display: none; }
  .xy-search-btn { width: 34px; padding: 0; justify-content: center; }
  .xy-search-btn__txt, .xy-search-btn__kbd { display: none; }
  .xy-shell { padding: 0 16px; }
  .xy-section { padding: 40px 0 8px; }
  .xy-section__h { font-size: 22px; }
  .xy-hero__cta { gap: 8px; }
  .xy-btn { height: 38px; padding: 0 14px; font-size: 13.5px; }
  .xy-prose { font-size: 15px; }
  .xy-prose h2 { font-size: 19px; }
  .xy-prose h3 { font-size: 16px; }
  .xy-cta-band__inner { padding: 22px 18px; }
  .xy-cta-band__h { font-size: 18px; }
  .xy-footer__top { padding: 36px 16px 24px; }
  .xy-footer__cols { grid-template-columns: 1fr 1fr; }
  .xy-footer__line { flex-direction: column; align-items: flex-start; gap: 6px; }
}

/* ---------- 16. Print ---------- */
@media print {
  .xy-banner, .xy-header, .xy-sidebar, .xy-toc, .xy-prevnext, .xy-pager, .xy-footer, .xy-cta-band { display: none !important; }
  .xy-shell { display: block; padding: 0; }
  .xy-main { padding: 0; }
  .xy-article__body { display: block; }
  .xy-prose { max-width: 100%; }
}

/* ---------- 17. Misc utilities ---------- */
.xy-only-mobile { display: none; }
@media (max-width: 960px) { .xy-only-mobile { display: inline-flex; } .xy-only-desktop { display: none !important; } }

/* selection color */
::selection { background: var(--xy-primary-tint); color: var(--xy-text); }
::-moz-selection { background: var(--xy-primary-tint); color: var(--xy-text); }

/* focus ring (accessibility) */
a:focus-visible, button:focus-visible, input:focus-visible, [role="button"]:focus-visible {
  outline: 2px solid var(--xy-primary);
  outline-offset: 2px;
  border-radius: 6px;
}

/* safe-area for notch devices */
@supports (padding: max(0px)) {
  .xy-header__inner { padding-left: max(24px, env(safe-area-inset-left)); padding-right: max(24px, env(safe-area-inset-right)); }
  .xy-shell { padding-left: max(24px, env(safe-area-inset-left)); padding-right: max(24px, env(safe-area-inset-right)); }
}