/* ZENTHERIX — дизайн-система в стиле NaraRouter (router.bynara.id)
   Токены, типографика Satoshi, glass-карточки, topbar, code-blocks, docs-layout. */

@font-face{font-family:"Satoshi";src:url("fonts/Satoshi-Regular.woff2") format("woff2");font-weight:400;font-style:normal;font-display:swap}
@font-face{font-family:"Satoshi";src:url("fonts/Satoshi-Medium.woff2") format("woff2");font-weight:500;font-style:normal;font-display:swap}
@font-face{font-family:"Satoshi";src:url("fonts/Satoshi-Bold.woff2") format("woff2");font-weight:700;font-style:normal;font-display:swap}
@font-face{font-family:"Satoshi";src:url("fonts/Satoshi-Black.woff2") format("woff2");font-weight:900;font-style:normal;font-display:swap}

:root{
  --font-sans:"Satoshi","Inter",system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;

  --color-primary:45 123 255;
  --color-primary-content:255 255 255;
  --color-accent:6 182 212;
  --color-info:14 165 233;
  --color-success:16 185 129;
  --color-warning:245 158 11;
  --color-error:239 68 68;
  --color-primary-hover:37 99 235;
  --ring-focus:45 123 255;

  --bg-app:248 250 252;
  --bg-surface:255 255 255;
  --bg-muted:235 239 246;
  --border-subtle:226 232 240;
  --text-main:15 23 42;
  --text-muted:100 116 139;

  --glass-blur:14px;
  --glass-alpha:.72;
  --shadow-xs:0 1px 2px 0 rgba(15,23,42,.04);
  --shadow-sm:0 1px 3px 0 rgba(15,23,42,.08),0 1px 2px -1px rgba(15,23,42,.06);
  --shadow-md:0 4px 6px -1px rgba(15,23,42,.08),0 2px 4px -2px rgba(15,23,42,.06);
  --shadow-lg:0 10px 15px -3px rgba(15,23,42,.10),0 4px 6px -4px rgba(15,23,42,.08);
  --shadow-glow:0 0 0 1px rgba(45,123,255,.20),0 8px 24px -4px rgba(45,123,255,.40);
  --duration-fast:120ms;--duration-base:200ms;--duration-slow:320ms;
  --easing-glide:cubic-bezier(.2,.8,.2,1);

  --radius:1rem;--radius-lg:1.5rem;
  --topbar-h:3.5rem;
}
html.dark{
  --color-primary:59 130 246;
  --color-accent:34 211 238;
  --color-info:56 189 248;
  --color-success:52 211 153;
  --color-warning:251 191 36;
  --color-error:248 113 113;
  --color-primary-hover:96 165 250;
  --ring-focus:59 130 246;
  --bg-app:7 10 19;
  --bg-surface:13 19 36;
  --bg-muted:12 17 31;
  --border-subtle:30 41 59;
  --text-main:241 245 249;
  --text-muted:148 163 184;
  --shadow-xs:0 1px 2px 0 rgba(0,0,0,.30);
  --shadow-sm:0 1px 3px 0 rgba(0,0,0,.40),0 1px 2px -1px rgba(0,0,0,.30);
  --shadow-md:0 4px 6px -1px rgba(0,0,0,.40),0 2px 4px -2px rgba(0,0,0,.30);
  --shadow-lg:0 10px 15px -3px rgba(0,0,0,.50),0 4px 6px -4px rgba(0,0,0,.40);
  --shadow-glow:0 0 0 1px rgba(59,130,246,.30),0 8px 24px -4px rgba(59,130,246,.50);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:rgb(var(--bg-app));color:rgb(var(--text-main));
  font-family:var(--font-sans);font-size:16px;line-height:1.55;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden;
}
img{max-width:100%;display:block}
a{color:inherit}
::selection{background:rgb(var(--color-primary)/.35)}
::-webkit-scrollbar{width:11px;height:11px}
::-webkit-scrollbar-track{background:rgb(var(--bg-app))}
::-webkit-scrollbar-thumb{background:rgb(var(--border-subtle));border-radius:999px;border:3px solid rgb(var(--bg-app))}
::-webkit-scrollbar-thumb:hover{background:rgb(var(--text-muted)/.6)}
:focus-visible{outline:2px solid rgb(var(--ring-focus));outline-offset:2px;border-radius:6px}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ============ layout ============ */
.nara-container{width:100%;margin-inline:auto;padding-inline:1.25rem;max-width:72rem}
.nara-container--xl{max-width:80rem}
.nara-container--lg{max-width:68rem}
.nara-container--sm{max-width:48rem}
.nara-section{position:relative;padding-block:4rem}
.nara-section--pad-lg{padding-block:4.5rem}
.nara-section--pad-xl{padding-block:6rem}
.nara-section--plain{padding-block:2.5rem}

.nara-stack{display:flex;flex-direction:column;gap:1rem;min-width:0}
.nara-stack--row{flex-direction:row}
.nara-stack--gap-1{gap:.25rem}.nara-stack--gap-2{gap:.5rem}.nara-stack--gap-3{gap:.75rem}
.nara-stack--gap-4{gap:1rem}.nara-stack--gap-5{gap:1.25rem}.nara-stack--gap-6{gap:1.5rem}
.nara-stack--gap-8{gap:2rem}.nara-stack--gap-10{gap:2.5rem}.nara-stack--gap-12{gap:3rem}
.nara-stack--align-center{align-items:center}.nara-stack--align-start{align-items:flex-start}
.nara-stack--justify-center{justify-content:center}.nara-stack--justify-between{justify-content:space-between}
.nara-stack--wrap{flex-wrap:wrap}

.nara-inline{display:inline-flex;align-items:center;gap:.5rem;min-width:0}
.nara-inline--gap-1{gap:.25rem}.nara-inline--gap-2{gap:.5rem}.nara-inline--gap-3{gap:.75rem}
.nara-inline--gap-4{gap:1rem}.nara-inline--gap-5{gap:1.25rem}.nara-inline--gap-6{gap:1.5rem}
.nara-inline--gap-8{gap:2rem}
.nara-inline--wrap{flex-wrap:wrap}
.nara-inline--justify-between{justify-content:space-between}
.nara-inline--justify-center{justify-content:center}
.nara-inline--align-center{align-items:center}
.nara-inline--align-start{align-items:flex-start}

.nara-grid{display:grid;gap:1.5rem}
.nara-grid--cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.nara-grid--cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.nara-grid--cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:900px){.nara-grid--cols-3,.nara-grid--cols-4{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.nara-grid--cols-2,.nara-grid--cols-3,.nara-grid--cols-4{grid-template-columns:minmax(0,1fr)}}

/* ============ typography ============ */
.nara-heading{margin:0;font-weight:700;letter-spacing:-.045em;line-height:1.12;color:rgb(var(--text-main))}
.nara-heading--display{font-size:clamp(2.6rem,6vw,4.1rem);letter-spacing:-.055em;line-height:1.05}
.nara-heading--1{font-size:clamp(2.1rem,4.6vw,3.1rem);letter-spacing:-.05em;line-height:1.08}
.nara-heading--2{font-size:clamp(1.7rem,3.4vw,2.4rem);letter-spacing:-.045em}
.nara-heading--3{font-size:clamp(1.3rem,2.4vw,1.7rem);letter-spacing:-.035em}
.nara-heading--4{font-size:1.15rem;letter-spacing:-.02em}
.nara-heading--align-center{text-align:center}
.nara-heading--tone-muted{color:rgb(var(--text-muted))}
.nara-heading--tone-primary{color:rgb(var(--color-primary))}

.nara-text{margin:0;font-size:1rem;line-height:1.6;color:rgb(var(--text-main))}
.nara-text--xs{font-size:.75rem}.nara-text--sm{font-size:.875rem}.nara-text--base{font-size:1rem}
.nara-text--lg{font-size:1.125rem}.nara-text--xl{font-size:1.3rem}
.nara-text--muted{color:rgb(var(--text-muted))}
.nara-text--regular{font-weight:400}.nara-text--medium{font-weight:500}
.nara-text--semibold{font-weight:600}.nara-text--bold{font-weight:700}
.nara-text--align-center{text-align:center}
.nara-text--code{font-family:var(--font-mono);font-size:.9em;background:rgb(var(--bg-muted));
  border:1px solid rgb(var(--border-subtle));border-radius:.4rem;padding:.08em .4em}
.nara-text--tone-primary{color:rgb(var(--color-primary))}
.nara-text--tone-success{color:rgb(var(--color-success))}

.eyebrow{display:inline-block;font-size:.72rem;font-weight:700;letter-spacing:.16em;
  text-transform:uppercase;color:rgb(var(--color-primary));margin-bottom:.65rem}

/* ============ badges ============ */
.nara-badge{display:inline-flex;align-items:center;gap:.4rem;padding:.32rem .7rem;
  border-radius:999px;font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;
  border:1px solid transparent;white-space:nowrap}
.nara-badge--soft{background:rgb(var(--color-primary)/.12);color:rgb(var(--color-primary));
  border-color:rgb(var(--color-primary)/.25)}
.nara-badge--tone-success{background:rgb(var(--color-success)/.12);color:rgb(var(--color-success));
  border-color:rgb(var(--color-success)/.3)}
.nara-badge--tone-info{background:rgb(var(--color-info)/.12);color:rgb(var(--color-info));
  border-color:rgb(var(--color-info)/.3)}
.nara-badge--tone-warning{background:rgb(var(--color-warning)/.12);color:rgb(var(--color-warning));
  border-color:rgb(var(--color-warning)/.3)}
.nara-badge--outline{background:transparent;color:rgb(var(--text-muted));border-color:rgb(var(--border-subtle))}

/* ============ buttons ============ */
.nara-btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5rem;
  font-family:inherit;font-weight:600;line-height:1;cursor:pointer;
  border-radius:.7rem;border:1px solid transparent;background:transparent;color:inherit;
  transition:background var(--duration-fast) var(--easing-glide),
             border-color var(--duration-fast) var(--easing-glide),
             color var(--duration-fast) var(--easing-glide),
             transform var(--duration-fast) var(--easing-glide),
             box-shadow var(--duration-base) var(--easing-glide);
  white-space:nowrap;text-decoration:none;
}
.nara-btn:active{transform:scale(.98)}
.nara-btn--xs{height:1.85rem;padding:0 .6rem;font-size:.75rem}
.nara-btn--sm{height:2.15rem;padding:0 .85rem;font-size:.82rem}
.nara-btn--md{height:2.65rem;padding:0 1.2rem;font-size:.9rem}
.nara-btn--lg{height:3rem;padding:0 1.6rem;font-size:.97rem}
.nara-btn--full{width:100%}
.nara-btn--primary-solid{background:rgb(var(--color-primary));color:rgb(var(--color-primary-content));
  box-shadow:var(--shadow-sm)}
.nara-btn--primary-solid:hover{background:rgb(var(--color-primary-hover));box-shadow:var(--shadow-glow)}
.nara-btn--primary-ghost{color:rgb(var(--color-primary));background:rgb(var(--color-primary)/.1)}
.nara-btn--primary-ghost:hover{background:rgb(var(--color-primary)/.18)}
.nara-btn--primary-outline{border-color:rgb(var(--color-primary)/.45);color:rgb(var(--color-primary));
  background:rgb(var(--color-primary)/.06)}
.nara-btn--primary-outline:hover{border-color:rgb(var(--color-primary));background:rgb(var(--color-primary)/.14)}
.nara-btn--secondary-ghost{color:rgb(var(--text-muted));background:rgb(var(--bg-muted)/.7)}
.nara-btn--secondary-ghost:hover{color:rgb(var(--text-main));background:rgb(var(--bg-muted))}
.nara-btn--secondary-outline{border-color:rgb(var(--border-subtle));color:rgb(var(--text-main));
  background:rgb(var(--bg-surface)/.5)}
.nara-btn--secondary-outline:hover{border-color:rgb(var(--text-muted)/.6)}
.nara-btn--accent-solid{background:rgb(var(--color-accent));color:#04141a}
.nara-btn--accent-solid:hover{filter:brightness(1.08);box-shadow:0 8px 26px -8px rgb(var(--color-accent)/.7)}

/* ============ cards ============ */
.nara-card{
  background:rgb(var(--bg-surface));border:1px solid rgb(var(--border-subtle));
  border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);padding:1.5rem;position:relative;min-width:0;
}
.nara-card--glass{
  background:linear-gradient(180deg,rgb(var(--bg-surface)/.85),rgb(var(--bg-surface)/.55));
  backdrop-filter:saturate(160%) blur(var(--glass-blur));
  -webkit-backdrop-filter:saturate(160%) blur(var(--glass-blur));
}
.nara-card--hoverable{transition:transform var(--duration-base) var(--easing-glide),
  border-color var(--duration-base) var(--easing-glide),box-shadow var(--duration-base) var(--easing-glide)}
.nara-card--hoverable:hover{transform:translateY(-4px);border-color:rgb(var(--color-primary)/.4);
  box-shadow:0 18px 44px -26px rgb(var(--color-primary)/.55)}
.nara-card--flush{padding:0;overflow:hidden}

/* ============ topbar ============ */
.zx-topbar{
  position:sticky;top:0;z-index:50;height:var(--topbar-h);
  background:rgb(var(--bg-app)/.72);backdrop-filter:saturate(180%) blur(16px);
  -webkit-backdrop-filter:saturate(180%) blur(16px);
  border-bottom:1px solid rgb(var(--border-subtle)/.8);
}
.zx-topbar__inner{height:100%;display:flex;align-items:center;gap:1.25rem}
.zx-brand{display:inline-flex;align-items:center;gap:.55rem;text-decoration:none;flex:none}
.zx-brand img{width:30px;height:30px}
.zx-brand span{font-size:1.06rem;font-weight:900;letter-spacing:-.045em}
.zx-brand .accent{color:rgb(var(--color-primary))}
.zx-nav{display:flex;align-items:center;gap:.15rem;margin-inline:auto}
.zx-nav a{
  padding:.4rem .7rem;border-radius:.55rem;font-size:.875rem;font-weight:500;
  color:rgb(var(--text-muted));text-decoration:none;transition:color var(--duration-fast),background var(--duration-fast)}
.zx-nav a:hover{color:rgb(var(--text-main));background:rgb(var(--bg-muted)/.8)}
.zx-nav a.active{color:rgb(var(--color-primary));background:rgb(var(--color-primary)/.1);font-weight:600}
.zx-actions{display:flex;align-items:center;gap:.5rem;flex:none}
.zx-menu-btn{display:none}
@media(max-width:880px){
  .zx-nav{display:none}
  .zx-menu-btn{display:inline-flex}
  .zx-actions .hide-sm{display:none}
}

/* drawer */
.zx-drawer{position:fixed;inset:0 0 0 auto;width:min(19rem,84vw);z-index:70;
  background:rgb(var(--bg-surface));border-left:1px solid rgb(var(--border-subtle));
  transform:translateX(102%);transition:transform var(--duration-slow) var(--easing-glide);
  padding:1rem;display:flex;flex-direction:column;gap:.35rem}
.zx-drawer.open{transform:none}
.zx-drawer a{padding:.7rem .8rem;border-radius:.6rem;text-decoration:none;color:rgb(var(--text-main));
  font-weight:500;font-size:.95rem}
.zx-drawer a:hover{background:rgb(var(--bg-muted))}
.zx-overlay{position:fixed;inset:0;background:rgba(2,6,14,.6);z-index:60;opacity:0;pointer-events:none;
  transition:opacity var(--duration-base)}
.zx-overlay.open{opacity:1;pointer-events:auto}

/* ============ hero ============ */
.zx-hero{position:relative;overflow:hidden;padding:5rem 0 3rem}
.zx-hero__bg{position:absolute;inset:-10% 0 auto;height:640px;pointer-events:none;
  background:
    radial-gradient(48rem 30rem at 18% 0%,rgb(var(--color-primary)/.22),transparent 60%),
    radial-gradient(40rem 26rem at 84% 8%,rgb(var(--color-accent)/.15),transparent 62%),
    radial-gradient(56rem 34rem at 50% -12%,rgb(var(--color-info)/.12),transparent 65%);
  filter:blur(2px)}
.zx-hero__grid{position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(rgb(var(--text-main)/.05) 1px,transparent 1px),
                   linear-gradient(90deg,rgb(var(--text-main)/.05) 1px,transparent 1px);
  background-size:56px 56px;
  -webkit-mask-image:radial-gradient(60rem 34rem at 50% 0%,#000 25%,transparent 78%);
  mask-image:radial-gradient(60rem 34rem at 50% 0%,#000 25%,transparent 78%)}
.zx-hero__content{position:relative;z-index:1}
.zx-hero h1{max-width:30ch}
.zx-hero h1 .grad{
  background:linear-gradient(100deg,rgb(var(--color-info)),rgb(var(--color-primary)) 55%,rgb(var(--color-accent)));
  -webkit-background-clip:text;background-clip:text;color:transparent}
.zx-hero__lead{max-width:52ch;color:rgb(var(--text-muted));font-size:1.13rem;line-height:1.65}
.zx-hero__split{display:grid;grid-template-columns:minmax(0,.96fr) minmax(0,1.04fr);gap:2.75rem;align-items:center}
@media(max-width:980px){.zx-hero__split{grid-template-columns:minmax(0,1fr);gap:2.25rem}.zx-hero{padding-top:3.5rem}}

/* stats strip */
.zx-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  border:1px solid rgb(var(--border-subtle));border-radius:var(--radius);overflow:hidden;
  background:rgb(var(--bg-app)/.5);backdrop-filter:blur(10px)}
.zx-stats>div{padding:1rem 1.1rem;text-align:center;border-left:1px solid rgb(var(--border-subtle))}
.zx-stats>div:first-child{border-left:0}
.zx-stats strong{display:block;font-size:1.45rem;font-weight:800;letter-spacing:-.03em;
  font-variant-numeric:tabular-nums}
.zx-stats span{font-size:.72rem;color:rgb(var(--text-muted));text-transform:uppercase;letter-spacing:.08em}
@media(max-width:700px){.zx-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .zx-stats>div:nth-child(3){border-left:0}
  .zx-stats>div:nth-child(n+3){border-top:1px solid rgb(var(--border-subtle))}}

/* ============ marquee ============ */
.zx-marquee{overflow:hidden;white-space:nowrap;margin-top:2.75rem;
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent)}
.zx-marquee .track{display:inline-block;animation:zx-scroll 46s linear infinite}
.zx-marquee:hover .track{animation-play-state:paused}
.zx-marquee span{display:inline-flex;align-items:center;gap:.45rem;font-family:var(--font-mono);
  font-size:.78rem;color:rgb(var(--text-muted));border:1px solid rgb(var(--border-subtle));
  border-radius:999px;padding:.4rem .85rem;margin-right:.5rem;background:rgb(var(--bg-surface)/.6)}
.zx-marquee span.hot{color:rgb(var(--color-primary));border-color:rgb(var(--color-primary)/.4);
  background:rgb(var(--color-primary)/.08)}
.zx-marquee img{width:15px;height:15px;opacity:.85}
@keyframes zx-scroll{to{transform:translateX(-50%)}}

/* ============ code block ============ */
.zx-code{border:1px solid rgb(var(--border-subtle));border-radius:var(--radius-lg);
  background:rgb(var(--bg-muted)/.55);overflow:hidden;box-shadow:var(--shadow-lg)}
.zx-code__bar{display:flex;align-items:center;gap:.4rem;padding:.4rem .6rem;
  border-bottom:1px solid rgb(var(--border-subtle));background:rgb(var(--bg-surface)/.5)}
.zx-code__tab{
  display:inline-flex;align-items:center;gap:.5rem;height:2.3rem;padding:0 .8rem;
  border:0;border-bottom:2px solid transparent;background:transparent;color:rgb(var(--text-muted));
  font-family:inherit;font-size:.82rem;font-weight:600;cursor:pointer;
  transition:color var(--duration-fast),border-color var(--duration-fast),background var(--duration-fast)}
.zx-code__tab img{width:17px;height:17px;opacity:.72;transition:opacity var(--duration-fast)}
.zx-code__tab:hover{color:rgb(var(--text-main))}
.zx-code__tab.sel{color:rgb(var(--color-primary));border-bottom-color:rgb(var(--color-primary));
  background:rgb(var(--color-primary)/.07)}
.zx-code__tab.sel img{opacity:1}
.zx-code__copy{margin-left:auto;height:2rem;padding:0 .7rem;font-size:.76rem;font-weight:600;
  border:.5px solid rgb(var(--border-subtle));border-radius:.5rem;background:rgb(var(--bg-surface)/.7);
  color:rgb(var(--text-muted));cursor:pointer;transition:color var(--duration-fast),border-color var(--duration-fast)}
.zx-code__copy:hover{color:rgb(var(--color-primary));border-color:rgb(var(--color-primary)/.5)}
.zx-code pre{
  margin:0;padding:1.25rem 1.35rem;overflow-x:auto;font-family:var(--font-mono);
  font-size:.83rem;line-height:1.75;color:rgb(var(--text-main));tab-size:2}
.zx-code .c{color:rgb(var(--text-muted)/.85);font-style:italic}
.zx-code .k{color:rgb(var(--color-primary))}
.zx-code .s{color:rgb(var(--color-success))}
.zx-code .n{color:rgb(var(--color-accent))}
.zx-pane{display:none}
.zx-pane.sel{display:block;animation:zx-fade .22s var(--easing-glide)}
@keyframes zx-fade{from{opacity:0;transform:translateY(4px)}}

/* ============ terminal ============ */
.zx-term{border:1px solid rgb(var(--border-subtle));border-radius:var(--radius-lg);overflow:hidden;
  background:#05070d;box-shadow:var(--shadow-lg)}
.zx-term__bar{display:flex;align-items:center;gap:.4rem;padding:.7rem .9rem;
  border-bottom:1px solid rgb(255 255 255/.08);background:rgb(255 255 255/.03)}
.zx-term__bar i{width:10px;height:10px;border-radius:50%;background:rgb(255 255 255/.16)}
.zx-term__bar i:nth-child(1){background:rgb(248 113 113/.75)}
.zx-term__bar i:nth-child(2){background:rgb(251 191 36/.7)}
.zx-term__bar i:nth-child(3){background:rgb(52 211 153/.7)}
.zx-term__bar span{margin-left:.55rem;font-family:var(--font-mono);font-size:.73rem;color:#5d6b82}
.zx-term__scr{padding:1.25rem 1.35rem;min-height:230px;font-family:var(--font-mono);font-size:.8rem;
  line-height:1.85;color:#dbe4f0}
.zx-term__scr .p{color:#60a5fa}
.zx-term__scr .d{color:#5d6b82}
.zx-term__scr .t{color:#e6edf7}
.zx-caret{display:inline-block;width:8px;height:14px;background:#60a5fa;vertical-align:-2px;
  animation:zx-blink 1s steps(1) infinite}
@keyframes zx-blink{50%{opacity:0}}

/* ============ checker ============ */
.zx-checker{border:1px solid rgb(var(--border-subtle));border-radius:var(--radius-lg);
  background:rgb(var(--bg-surface)/.8);backdrop-filter:blur(14px);padding:1rem;
  box-shadow:var(--shadow-lg);transition:box-shadow var(--duration-base)}
.zx-checker:focus-within{box-shadow:0 0 0 1px rgb(var(--color-primary)/.35),var(--shadow-lg)}
.zx-checker__row{display:flex;gap:.6rem}
.zx-checker input{flex:1;min-width:0;height:3rem;padding:0 .95rem;font-family:var(--font-mono);
  font-size:.86rem;color:rgb(var(--text-main));background:rgb(var(--bg-app)/.7);
  border:1px solid rgb(var(--border-subtle));border-radius:.75rem}
.zx-checker input::placeholder{color:rgb(var(--text-muted)/.7)}
.zx-checker input:focus{border-color:rgb(var(--color-primary)/.6);outline:none}
#checkRes{display:none;margin:.7rem .15rem .1rem;border-radius:.8rem;padding:.9rem 1rem;
  font-size:.83rem;text-align:left;border:1px solid transparent}
#checkRes.ok{display:block;border-color:rgb(var(--color-success)/.35);background:rgb(var(--color-success)/.08)}
#checkRes.bad{display:block;border-color:rgb(var(--color-error)/.4);background:rgb(var(--color-error)/.08)}
#checkRes .big{font-size:1.05rem;font-weight:800;margin-bottom:.35rem}
#checkRes .kv{display:flex;justify-content:space-between;gap:.75rem;padding:.18rem 0;font-size:.8rem}
#checkRes .kv span:first-child{color:rgb(var(--text-muted))}
#checkRes .qlimit{font-size:1.45rem;font-weight:800;letter-spacing:-.02em;margin:.25rem 0 .1rem;
  font-variant-numeric:tabular-nums}
#checkRes .qlimit small{font-size:.8rem;font-weight:500;color:rgb(var(--text-muted))}
#checkRes .qbar{height:7px;border-radius:4px;background:rgb(var(--text-main)/.1);margin:.6rem 0 .3rem;overflow:hidden}
#checkRes .qbar i{display:block;height:100%;border-radius:4px;background:rgb(var(--color-primary))}
#checkRes .qbar.hot i{background:rgb(var(--color-error))}
#checkRes .qbar.warn i{background:rgb(var(--color-warning))}

/* ============ steps / plans / chips ============ */
.zx-step__n{display:inline-flex;align-items:center;justify-content:center;width:28px;height:28px;
  border-radius:.55rem;background:rgb(var(--color-primary));color:#fff;font-size:.8rem;font-weight:800;
  margin-bottom:.9rem;box-shadow:0 6px 18px -8px rgb(var(--color-primary)/.9)}
.zx-plan{display:flex;flex-direction:column;gap:.4rem}
.zx-plan .t{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;
  color:rgb(var(--text-muted))}
.zx-plan .p{font-size:2.5rem;font-weight:900;letter-spacing:-.04em;font-variant-numeric:tabular-nums}
.zx-plan .p small{font-size:.95rem;font-weight:500;color:rgb(var(--text-muted));letter-spacing:0}
.zx-plan ul{list-style:none;margin:.9rem 0 0;padding:0;font-size:.87rem;color:rgb(var(--text-muted))}
.zx-plan li{position:relative;padding:.32rem 0 .32rem 1.3rem}
.zx-plan li::before{content:"";position:absolute;left:.1rem;top:.85rem;width:.55rem;height:2px;
  border-radius:2px;background:rgb(var(--color-primary))}
.zx-plan.hot{border-color:rgb(var(--color-primary)/.5);
  box-shadow:0 0 0 1px rgb(var(--color-primary)/.18),0 24px 60px -40px rgb(var(--color-primary)/.8)}
.zx-plan .flag{position:absolute;top:-.72rem;left:50%;transform:translateX(-50%);
  background:rgb(var(--color-primary));color:#fff;font-size:.66rem;font-weight:800;letter-spacing:.08em;
  text-transform:uppercase;border-radius:999px;padding:.25rem .8rem;white-space:nowrap}

.zx-chips{display:flex;gap:.5rem;flex-wrap:wrap}
.zx-chip{display:inline-flex;align-items:center;gap:.45rem;font-family:var(--font-mono);font-size:.78rem;
  color:rgb(var(--text-main));border:1px solid rgb(var(--border-subtle));border-radius:999px;
  padding:.42rem .85rem;background:rgb(var(--bg-surface)/.7);transition:border-color var(--duration-fast),
  color var(--duration-fast),transform var(--duration-fast)}
.zx-chip:hover{border-color:rgb(var(--color-primary)/.6);color:rgb(var(--color-primary));transform:translateY(-1px)}
.zx-chip img{width:14px;height:14px;opacity:.75}
.zx-chip.hot{border-color:rgb(var(--color-primary)/.45);color:rgb(var(--color-primary));
  background:rgb(var(--color-primary)/.08)}

/* integrations grid */
.zx-tool{display:flex;gap:.9rem;align-items:flex-start;text-align:left;padding:1.15rem 1.2rem}
.zx-tool__ico{flex:none;width:42px;height:42px;border-radius:.75rem;display:grid;place-items:center;
  background:rgb(var(--bg-muted));border:1px solid rgb(var(--border-subtle))}
.zx-tool__ico img{width:22px;height:22px}
.zx-tool h3{margin:0 0 .2rem;font-size:.98rem;font-weight:700;letter-spacing:-.02em}
.zx-tool p{margin:0;font-size:.83rem;color:rgb(var(--text-muted));line-height:1.55}

/* ============ docs layout ============ */
.zx-docs{display:grid;grid-template-columns:15.5rem minmax(0,1fr);gap:3rem;align-items:start}
.zx-docs__nav{position:sticky;top:calc(var(--topbar-h) + 1.5rem);align-self:start}
.zx-docs__nav p{margin:0 0 .7rem;font-size:.7rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:rgb(var(--text-muted))}
.zx-docs__nav ul{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.15rem}
.zx-docs__nav a{display:block;padding:.38rem .75rem;border-radius:.5rem;font-size:.86rem;
  color:rgb(var(--text-muted));text-decoration:none;transition:background var(--duration-fast),
  color var(--duration-fast)}
.zx-docs__nav a:hover{background:rgb(var(--bg-muted));color:rgb(var(--text-main))}
.zx-docs__nav a.active{background:rgb(var(--color-primary)/.12);color:rgb(var(--color-primary));font-weight:600}
.zx-docs__body{min-width:0;max-width:52rem}
.zx-docs__body section{scroll-margin-top:calc(var(--topbar-h) + 1.5rem);padding-top:2.5rem;margin-top:2.5rem;
  border-top:1px solid rgb(var(--border-subtle))}
.zx-docs__body section:first-child{border-top:0;margin-top:0;padding-top:0}
.zx-docs__body h2{font-size:1.65rem;font-weight:800;letter-spacing:-.04em;margin:0 0 .75rem}
.zx-docs__body h3{font-size:1.08rem;font-weight:700;letter-spacing:-.02em;margin:1.9rem 0 .55rem}
.zx-docs__body p{margin:.6rem 0;color:rgb(var(--text-muted));line-height:1.7}
.zx-docs__body ul,.zx-docs__body ol{color:rgb(var(--text-muted));line-height:1.75;padding-left:1.25rem;margin:.6rem 0}
.zx-docs__body li{margin:.3rem 0}
.zx-docs__body strong{color:rgb(var(--text-main))}
.zx-docs__body a{color:rgb(var(--color-primary));text-decoration:none}
.zx-docs__body a:hover{text-decoration:underline}
.zx-docs__body code{font-family:var(--font-mono);font-size:.86em;background:rgb(var(--bg-muted));
  border:1px solid rgb(var(--border-subtle));border-radius:.35rem;padding:.08em .38em;color:rgb(var(--text-main))}
.zx-docs__body pre code{background:none;border:0;padding:0;color:inherit}
.zx-lead{font-size:1.1rem;color:rgb(var(--text-muted));line-height:1.7;max-width:46rem}
.zx-tablewrap{overflow-x:auto;border:1px solid rgb(var(--border-subtle));border-radius:var(--radius);
  background:rgb(var(--bg-surface)/.6)}
table.zx-table{width:100%;border-collapse:collapse;font-size:.87rem;min-width:34rem}
table.zx-table th,table.zx-table td{padding:.7rem .95rem;text-align:left;border-bottom:1px solid rgb(var(--border-subtle))}
table.zx-table th{font-size:.7rem;text-transform:uppercase;letter-spacing:.1em;color:rgb(var(--text-muted));
  background:rgb(var(--bg-muted)/.6);font-weight:700}
table.zx-table td{color:rgb(var(--text-muted))}
table.zx-table td:first-child{color:rgb(var(--text-main));font-family:var(--font-mono);font-size:.82rem}
table.zx-table tr:last-child td{border-bottom:0}
table.zx-table tr:hover td{background:rgb(var(--bg-muted)/.35)}
.zx-method{display:inline-flex;font-family:var(--font-mono);font-size:.68rem;font-weight:800;
  letter-spacing:.06em;border-radius:.35rem;padding:.14rem .45rem;margin-right:.5rem;
  background:rgb(var(--color-success)/.15);color:rgb(var(--color-success));border:1px solid rgb(var(--color-success)/.3)}
.zx-callout{border:1px solid rgb(var(--color-primary)/.3);background:rgb(var(--color-primary)/.08);
  border-radius:var(--radius);padding:1rem 1.15rem;margin:1.1rem 0;font-size:.9rem;
  color:rgb(var(--text-main));line-height:1.65}
.zx-callout.warn{border-color:rgb(var(--color-warning)/.35);background:rgb(var(--color-warning)/.08)}
.zx-callout.ok{border-color:rgb(var(--color-success)/.35);background:rgb(var(--color-success)/.08)}
.zx-callout b{display:block;margin-bottom:.25rem}
.zx-steps{counter-reset:zxstep;list-style:none;padding:0;margin:1rem 0}
.zx-steps li{counter-increment:zxstep;position:relative;padding:.15rem 0 .15rem 2.4rem;
  color:rgb(var(--text-muted));line-height:1.7;margin:.55rem 0}
.zx-steps li::before{content:counter(zxstep);position:absolute;left:0;top:.1rem;width:1.6rem;height:1.6rem;
  border-radius:.45rem;background:rgb(var(--color-primary)/.14);color:rgb(var(--color-primary));
  font-size:.78rem;font-weight:800;display:grid;place-items:center;border:1px solid rgb(var(--color-primary)/.3)}
@media(max-width:980px){
  .zx-docs{grid-template-columns:minmax(0,1fr);gap:1.5rem}
  .zx-docs__nav{position:static}
  .zx-docs__nav ul{flex-direction:row;flex-wrap:wrap;gap:.35rem}
}

/* onthispage link */
.zx-toc-inline{display:none}

/* ============ footer ============ */
.zx-footer{margin-top:5rem;border-top:1px solid rgb(var(--border-subtle));
  background:rgb(var(--bg-surface)/.4);padding:3rem 0 2rem}
.zx-footer__cols{display:grid;grid-template-columns:1.5fr repeat(3,1fr);gap:2rem}
@media(max-width:820px){.zx-footer__cols{grid-template-columns:repeat(2,1fr)}}
.zx-footer__col h4{margin:0 0 .8rem;font-size:.72rem;font-weight:700;letter-spacing:.14em;
  text-transform:uppercase;color:rgb(var(--text-muted))}
.zx-footer__col a{display:block;padding:.25rem 0;font-size:.88rem;color:rgb(var(--text-muted));
  text-decoration:none;transition:color var(--duration-fast)}
.zx-footer__col a:hover{color:rgb(var(--color-primary))}
.zx-footer__bottom{display:flex;align-items:center;gap:1rem;flex-wrap:wrap;margin-top:2.5rem;
  padding-top:1.4rem;border-top:1px solid rgb(var(--border-subtle));font-size:.8rem;color:rgb(var(--text-muted))}
.zx-footer__bottom .sp{flex:1}

/* FAQ accordion */
.faq{border:1px solid rgb(var(--border-subtle));border-radius:1rem;
  background:rgb(var(--bg-surface)/.6);padding:.25rem 1.1rem}
.faq details+details{border-top:1px solid rgb(var(--border-subtle))}
.faq summary{cursor:pointer;list-style:none;padding:.95rem 0;font-weight:600;font-size:.95rem;
  display:flex;align-items:center;justify-content:space-between;gap:1rem}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.2rem;color:rgb(var(--color-primary));
  transition:transform var(--duration-base)}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq p{margin:0 0 1rem;font-size:.9rem;color:rgb(var(--text-muted));line-height:1.65}

/* reveal */
.rv{opacity:0;transform:translateY(22px);transition:opacity .55s var(--easing-glide),transform .55s var(--easing-glide)}
.rv.vis{opacity:1;transform:none}

/* utils */
.num{font-variant-numeric:tabular-nums}
.mono{font-family:var(--font-mono)}
.dim{color:rgb(var(--text-muted))}
.mt-0{margin-top:0}
.hide-sm{display:inline-flex}
@media(max-width:640px){.hide-sm{display:none!important}}