:root{
  --white:#FFFFFF;
  --near-white:#F8F9FC;
  --light-gray:#E8EAF0;
  --mid-gray:#C4C7D4;
  --cool-gray:#8B909E;
  --dark-gray:#4A4E5C;
  --near-black:#1A1B22;
  --black:#0D0E12;

  --blue-deep:#2D3A8C;
  --blue-mid:#4A6FD8;
  --blue-light:#6B8FE8;
  --periwinkle:#8BA4F0;
  --violet-mid:#7B5EA7;
  --indigo:#3D4DB5;

  --amber-warm:#C47D3A;
  --amber-light:#E8A84C;
  --peach:#D4906A;
  --orange-soft:#C06840;

  --brand-blue:#3B5BDB;
  --brand-blue-lt:#6B8FE8;

  --green:#2ECC71;
  --green-muted:#27AE60;
  --red:#E74C3C;
  --yellow:#F1C40F;

  --bg-page:var(--white);
  --bg-surface:var(--near-white);
  --bg-subtle:var(--light-gray);

  --text-primary:var(--near-black);
  --text-secondary:var(--dark-gray);
  --text-muted:#767B8C;
  --text-inverse:var(--white);

  --border-default:var(--light-gray);
  --border-strong:var(--mid-gray);

  --primary:var(--brand-blue);
  --primary-hover:#2D4AC8;
  --primary-active:#2238B0;
  --primary-subtle:rgba(59,91,219,0.08);

  --success:var(--green-muted);
  --success-subtle:rgba(39,174,96,0.10);
  --warning:var(--yellow);
  --warning-subtle:rgba(241,196,15,0.12);
  --error:var(--red);
  --error-subtle:rgba(231,76,60,0.10);
  --info:var(--blue-mid);
  --info-subtle:rgba(74,111,216,0.10);

  --gradient-hero:radial-gradient(ellipse 80% 70% at 50% 38%, #7B9FE8 0%, #4A6FD8 42%, #2D3A8C 100%);
  --gradient-arch:radial-gradient(ellipse 90% 70% at 50% 92%, #C8D4F8 0%, #E8ECFC 55%, #FFFFFF 100%);
  --gradient-tint:linear-gradient(180deg,#FFFFFF 0%,#F4F6FC 100%);

  --space-1:4px;--space-2:8px;--space-3:12px;--space-4:16px;--space-5:20px;
  --space-6:24px;--space-8:32px;--space-10:40px;--space-12:48px;--space-16:64px;
  --space-20:80px;--space-24:96px;--space-32:128px;--space-40:160px;

  --container-max:1200px;
  --container-padding:40px;
  --container-narrow:760px;
  --container-wide:1400px;

  --section-py:var(--space-24);
  --section-py-lg:var(--space-32);

  --radius-xs:2px;--radius-sm:4px;--radius-md:8px;--radius-lg:12px;
  --radius-xl:16px;--radius-2xl:24px;--radius-full:9999px;

  --shadow-xs:0 1px 2px rgba(13,14,18,0.05);
  --shadow-sm:0 1px 4px rgba(13,14,18,0.08),0 1px 2px rgba(13,14,18,0.04);
  --shadow-md:0 4px 12px rgba(13,14,18,0.10),0 2px 4px rgba(13,14,18,0.06);
  --shadow-lg:0 8px 24px rgba(13,14,18,0.14),0 4px 8px rgba(13,14,18,0.08);
  --shadow-xl:0 16px 48px rgba(13,14,18,0.18),0 8px 16px rgba(13,14,18,0.10);

  --ease-out:cubic-bezier(0,0,0.2,1);
  --ease-smooth:cubic-bezier(0.16,1,0.3,1);
  --ease-spring:cubic-bezier(0.34,1.56,0.64,1);
  --fast:140ms;--base:240ms;--slow:400ms;

  --font-sans:'Inter','Helvetica Neue',Arial,system-ui,sans-serif;
  --font-mono:'JetBrains Mono',ui-monospace,'SFMono-Regular',Menlo,Consolas,monospace;

  --fluid-display:clamp(2.5rem,5vw + 0.5rem,3.75rem);
  --fluid-h1:clamp(2.05rem,3.5vw + 0.5rem,2.95rem);
  --fluid-h2:clamp(1.55rem,2.5vw + 0.25rem,2.1rem);
  --fluid-h3:clamp(1.2rem,1.6vw + 0.2rem,1.4rem);

  --nav-h:64px;
  --z-sticky:200;--z-overlay:300;--z-modal:400;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:120px}
body{
  font-family:var(--font-sans);
  font-size:0.9375rem;
  line-height:1.6;
  color:var(--text-primary);
  background:var(--bg-page);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
img,svg{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--primary);text-decoration:none}
ul,ol{list-style:none}
h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.2}
code,pre{font-family:var(--font-mono);font-size:0.9em}
code,pre,.code,.trace,.kv,.diff,.prm,.sess .item,.col-label span,.card__kicker,.uc__hd span,.bars,table.spec td code{
  font-variant-ligatures:none;font-feature-settings:"liga" 0,"clig" 0,"calt" 0}
::selection{background:rgba(59,91,219,0.18)}

:focus-visible{outline:2px solid var(--primary);outline-offset:3px;border-radius:var(--radius-sm)}
.on-dark :focus-visible{outline-color:var(--periwinkle)}

.sr-only{position:absolute;width:1px;height:1px;padding:0;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{
  position:absolute;left:var(--space-4);top:-60px;z-index:var(--z-modal);
  background:var(--text-primary);color:#fff;padding:10px 16px;border-radius:var(--radius-md);
  transition:top var(--fast) var(--ease-out);
}
.skip-link:focus{top:var(--space-4)}

/* layout */
.container{max-width:var(--container-max);margin-inline:auto;padding-inline:var(--container-padding);width:100%}
.container--wide{max-width:var(--container-wide)}
.container--narrow{max-width:var(--container-narrow)}
.section{padding-block:var(--section-py)}
.section--lg{padding-block:var(--section-py-lg)}
.section--tint{background:var(--gradient-tint);border-top:1px solid var(--border-default);border-bottom:1px solid var(--border-default)}
.section--surface{background:var(--bg-surface);border-top:1px solid var(--border-default);border-bottom:1px solid var(--border-default)}
.center{text-align:center}

.eyebrow{
  display:inline-flex;align-items:center;gap:var(--space-2);
  font-size:0.6875rem;font-weight:600;letter-spacing:0.10em;text-transform:uppercase;
  color:var(--text-muted);
}
.eyebrow::before{content:"";width:18px;height:1.5px;background:currentColor;opacity:0.55;border-radius:2px}
.eyebrow--center::after{content:"";width:18px;height:1.5px;background:currentColor;opacity:0.55;border-radius:2px}
.on-dark .eyebrow{color:rgba(255,255,255,0.82)}

h2.h2{font-size:var(--fluid-h2);font-weight:700;letter-spacing:-0.022em;line-height:1.16}
h3.h3{font-size:var(--fluid-h3);font-weight:650;letter-spacing:-0.015em}
.lead{font-size:1.0625rem;line-height:1.68;color:var(--text-secondary)}
.lead--lg{font-size:1.125rem}
.section-head{max-width:680px}
.section-head--center{margin-inline:auto;text-align:center}
.section-head .eyebrow{margin-bottom:var(--space-4)}
.section-head .h2{margin-bottom:var(--space-4)}
.muted{color:var(--text-muted)}

/* buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);
  font-weight:500;font-size:0.875rem;line-height:1.4;
  padding:11px 20px;border:1.5px solid transparent;border-radius:var(--radius-md);
  cursor:pointer;white-space:nowrap;min-height:44px;
  transition:background-color var(--fast) var(--ease-out),border-color var(--fast) var(--ease-out),
             color var(--fast) var(--ease-out),box-shadow var(--fast) var(--ease-out),
             transform var(--fast) var(--ease-spring);
}
.btn svg{flex:none;width:16px;height:16px}
.btn--lg{padding:14px 26px;font-size:1rem}
.btn--primary{background:var(--near-black);color:var(--text-inverse);border-color:var(--near-black)}
.btn--primary:hover{background:var(--black);box-shadow:0 4px 14px rgba(13,14,18,0.26);transform:translateY(-1px)}
.btn--primary:active{transform:translateY(0);box-shadow:none}
.btn--secondary{background:var(--bg-page);color:var(--text-primary);border-color:var(--border-default)}
.btn--secondary:hover{background:var(--bg-surface);border-color:var(--mid-gray);box-shadow:var(--shadow-sm);transform:translateY(-1px)}
.btn--blue{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn--blue:hover{background:var(--primary-hover);box-shadow:0 4px 14px rgba(59,91,219,0.34);transform:translateY(-1px)}
.btn--on-dark{background:rgba(255,255,255,0.96);color:var(--near-black);border-color:transparent}
.btn--on-dark:hover{background:#fff;box-shadow:0 6px 20px rgba(0,0,0,0.22);transform:translateY(-1px)}
.btn--ghost-light{background:rgba(255,255,255,0.08);color:#fff;border-color:rgba(255,255,255,0.32)}
.btn--ghost-light:hover{background:rgba(255,255,255,0.16);border-color:rgba(255,255,255,0.5);transform:translateY(-1px)}

.textlink{color:var(--primary);font-weight:500;display:inline-flex;align-items:center;gap:6px}
.textlink svg{width:14px;height:14px;transition:transform var(--fast) var(--ease-out)}
.textlink:hover{color:var(--primary-hover)}
.textlink:hover svg{transform:translateX(3px)}

/* nav */
.nav{
  position:sticky;top:0;z-index:var(--z-sticky);
  background:rgba(255,255,255,0.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;transition:border-color var(--fast) var(--ease-out)
}
.nav.is-scrolled{border-bottom-color:var(--border-default)}
.nav__inner{display:flex;align-items:center;justify-content:space-between;gap:var(--space-6);
  max-width:var(--container-max);margin-inline:auto;padding:0 var(--container-padding);height:var(--nav-h)}
.brand{display:inline-flex;align-items:center;gap:10px;color:var(--text-primary);font-weight:800;letter-spacing:-0.02em;font-size:1.0625rem}
.brand:hover{color:var(--text-primary)}
.logo-mark{width:30px;height:30px;flex:none}
.nav__links{display:flex;align-items:center;gap:var(--space-6)}
.nav__link{font-size:0.875rem;color:var(--text-secondary);position:relative;padding:6px 2px;transition:color var(--fast) var(--ease-out)}
.nav__link:hover{color:var(--text-primary)}
.nav__link::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:1.5px;background:var(--primary);transform:scaleX(0);transform-origin:left;transition:transform var(--base) var(--ease-smooth)}
.nav__link:hover::after{transform:scaleX(1)}
.nav__link[aria-current="page"]{color:var(--text-primary);font-weight:550}
.nav__link[aria-current="page"]::after{transform:scaleX(1)}
.nav__actions{display:flex;align-items:center;gap:var(--space-3)}
.nav__links--mobile{display:none}
.nav__hamburger{display:none;width:44px;height:44px;align-items:center;justify-content:center;background:none;border:1px solid var(--border-default);border-radius:var(--radius-md);cursor:pointer}
.nav__hamburger svg{width:20px;height:20px;stroke:var(--text-primary);stroke-width:2;fill:none;stroke-linecap:round}

/* in page section nav */
.subnav{position:sticky;top:var(--nav-h);z-index:150;background:rgba(255,255,255,0.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-default)}
.subnav__inner{max-width:var(--container-max);margin-inline:auto;padding:0 var(--container-padding);display:flex;align-items:center;gap:var(--space-6);height:52px;overflow-x:auto;scrollbar-width:none}
.subnav__inner::-webkit-scrollbar{display:none}
.subnav a{font-size:0.8125rem;color:var(--text-muted);white-space:nowrap;padding:4px 0;border-bottom:2px solid transparent;transition:color var(--fast) var(--ease-out),border-color var(--fast) var(--ease-out)}
.subnav a:hover{color:var(--text-primary)}
.subnav a.is-current{color:var(--text-primary);border-bottom-color:var(--primary);font-weight:550}

/* home hero */
.hero{position:relative;padding-top:var(--space-20);padding-bottom:var(--space-20);overflow:hidden}
.hero__bg{position:absolute;inset:0;z-index:0;pointer-events:none}
.hero__bg::before{content:"";position:absolute;left:50%;top:-140px;transform:translateX(-50%);width:1100px;height:560px;
  background:radial-gradient(ellipse 50% 50% at 50% 50%,rgba(107,143,232,0.16) 0%,transparent 70%)}
.hero__inner{position:relative;z-index:1;text-align:center;max-width:780px;margin-inline:auto}
.hero h1{font-size:var(--fluid-h1);font-weight:700;letter-spacing:-0.028em;line-height:1.08;margin:var(--space-5) 0}
.hero__sub{font-size:1.125rem;line-height:1.62;color:var(--text-secondary);max-width:620px;margin-inline:auto}
.badge-pill{display:inline-flex;align-items:center;gap:8px;padding:6px 14px 6px 10px;border:1px solid var(--border-default);
  border-radius:var(--radius-full);background:rgba(255,255,255,0.8);font-size:0.75rem;font-weight:500;color:var(--text-secondary)}
.badge-pill .dot{width:7px;height:7px;border-radius:50%;background:var(--primary);box-shadow:0 0 0 4px var(--primary-subtle)}
.hero__cta{display:flex;gap:var(--space-3);justify-content:center;flex-wrap:wrap;margin-top:var(--space-8)}
.hero__note{margin-top:var(--space-5);font-size:0.8125rem;color:var(--text-muted);display:inline-flex;align-items:center;gap:8px}
.hero__note .spark{width:6px;height:6px;border-radius:50%;background:var(--amber-light)}
.hero__visual{position:relative;z-index:1;margin-top:var(--space-16);max-width:1120px;margin-inline:auto}
.hero__frame{border-radius:var(--radius-2xl);padding:12px;background:linear-gradient(160deg,rgba(107,143,232,0.26),rgba(45,58,140,0.14));
  border:1px solid rgba(107,143,232,0.26);box-shadow:var(--shadow-xl)}

/* subpage hero */
.phero{position:relative;overflow:hidden;background:var(--gradient-tint);border-bottom:1px solid var(--border-default);padding-block:var(--space-20) var(--space-16)}
.phero::before{content:"";position:absolute;left:50%;top:-220px;transform:translateX(-50%);width:1000px;height:440px;pointer-events:none;
  background:radial-gradient(ellipse 50% 50% at 50% 50%,rgba(107,143,232,0.14) 0%,transparent 70%)}
.phero__inner{position:relative;max-width:820px}
.phero h1{font-size:var(--fluid-h1);font-weight:700;letter-spacing:-0.028em;line-height:1.1;margin:var(--space-4) 0 var(--space-5)}
.phero .lead{font-size:1.125rem;max-width:680px}
.phero__meta{margin-top:var(--space-8);display:flex;flex-wrap:wrap;gap:var(--space-3) var(--space-8);padding-top:var(--space-6);border-top:1px solid var(--border-default)}
.phero__meta div{display:flex;flex-direction:column;gap:2px}
.phero__meta dt,.phero__meta .k{font-size:0.6875rem;font-weight:600;letter-spacing:0.08em;text-transform:uppercase;color:var(--text-muted)}
.phero__meta dd,.phero__meta .v{font-size:0.9375rem;font-weight:550;color:var(--text-primary)}

/* app mockup */
.app{background:#fff;color:var(--text-primary);border-radius:var(--radius-lg);overflow:hidden;border:1px solid rgba(13,14,18,0.06);box-shadow:var(--shadow-md)}
.app__bar{display:flex;align-items:center;gap:12px;padding:11px 14px;background:var(--bg-surface);border-bottom:1px solid var(--border-default)}
.app__dots{display:flex;gap:6px}
.app__dots i{width:11px;height:11px;border-radius:50%;background:var(--mid-gray)}
.app__dots i:nth-child(1){background:#ED6A5E}.app__dots i:nth-child(2){background:#F4BF50}.app__dots i:nth-child(3){background:#61C554}
.app__tabbar{display:flex;align-items:center;gap:6px;flex:1;min-width:0;overflow:hidden}
.app__tab{font-size:0.75rem;color:var(--text-secondary);padding:5px 10px;border-radius:var(--radius-sm);white-space:nowrap;background:none;border:0;cursor:default}
button.app__tab{cursor:pointer}
.app__tab.is-active{background:#fff;color:var(--text-primary);box-shadow:var(--shadow-xs);font-weight:500}
.app__live{margin-left:auto;display:inline-flex;align-items:center;gap:7px;font-size:0.6875rem;font-weight:600;color:var(--success);
  background:var(--success-subtle);padding:4px 10px;border-radius:var(--radius-full);white-space:nowrap}
.live-dot{width:7px;height:7px;border-radius:50%;background:var(--success);position:relative}
.live-dot::after{content:"";position:absolute;inset:-3px;border-radius:50%;border:1.5px solid var(--success);opacity:0.6;animation:pulse 2s var(--ease-out) infinite}
@keyframes pulse{0%{transform:scale(0.8);opacity:0.7}70%{transform:scale(1.5);opacity:0}100%{opacity:0}}
.app__body{display:grid;grid-template-columns:248px 1fr 252px;min-height:330px}
.app__col{padding:14px;min-width:0}
.app__col--rail{background:var(--bg-surface);border-right:1px solid var(--border-default)}
.app__col--insp{background:var(--bg-surface);border-left:1px solid var(--border-default)}
.col-label{font-size:0.625rem;font-weight:700;letter-spacing:0.08em;text-transform:uppercase;color:var(--text-muted);margin-bottom:12px;display:flex;gap:8px;align-items:baseline}
.col-label span{font-family:var(--font-mono);letter-spacing:0;text-transform:none;font-weight:500;opacity:0.85}

.trace{font-family:var(--font-mono);font-size:0.78rem;line-height:1.5}
.trace .node{display:flex;align-items:center;gap:7px;padding:6px 8px;border-radius:var(--radius-sm);position:relative}
.trace .node:hover{background:rgba(59,91,219,0.05)}
.trace .node.sel{background:rgba(59,91,219,0.10);box-shadow:inset 2px 0 0 var(--primary)}
.trace .caret{color:var(--text-muted);width:10px;flex:none}
.trace .nm{color:var(--text-primary);font-weight:500;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.trace .nm b{color:var(--brand-blue);font-weight:600}
.trace .meta{margin-left:auto;display:flex;align-items:center;gap:8px;flex:none}
.trace .dur{color:var(--text-muted);font-size:0.7rem}
.trace .sdot{width:7px;height:7px;border-radius:50%}
.sdot.ok{background:var(--success)}.sdot.warn{background:var(--amber-light)}.sdot.run{background:var(--primary)}.sdot.err{background:var(--error)}
.trace .lvl1{padding-left:22px}.trace .lvl2{padding-left:40px}.trace .lvl3{padding-left:58px}
.tag{font-family:var(--font-sans);font-size:0.625rem;font-weight:600;padding:1px 7px;border-radius:var(--radius-full);letter-spacing:0.02em}
.tag.llm{background:rgba(123,94,167,0.14);color:var(--violet-mid)}
.tag.tool{background:var(--info-subtle);color:var(--blue-mid)}
.tag.fn{background:var(--bg-subtle);color:var(--text-secondary)}
.tag.retr{background:rgba(196,125,58,0.14);color:var(--amber-warm)}

.insp h5{font-size:0.8125rem;font-weight:600;margin-bottom:4px}
.insp .sub{font-size:0.7rem;color:var(--text-muted);margin-bottom:12px;font-family:var(--font-mono)}
.kv{font-family:var(--font-mono);font-size:0.72rem;line-height:1.55;background:#fff;border:1px solid var(--border-default);border-radius:var(--radius-md);padding:9px 11px;margin-bottom:10px;color:var(--text-secondary);overflow-x:auto}
.kv .k{color:var(--violet-mid)}.kv .s{color:var(--amber-warm)}.kv .n{color:var(--green-muted)}
.kv .p{display:block;color:var(--text-muted);font-size:0.65rem;letter-spacing:0.06em;text-transform:uppercase;margin-bottom:4px}
.review{border:1px solid var(--border-default);border-radius:var(--radius-md);padding:11px;background:#fff}
.review__top{display:flex;align-items:center;gap:8px;margin-bottom:7px;flex-wrap:wrap}
.review p{font-size:0.74rem;color:var(--text-secondary);line-height:1.5}

.badge{display:inline-flex;align-items:center;gap:5px;padding:2px 9px;font-size:0.6875rem;font-weight:600;border-radius:var(--radius-full)}
.badge--success{background:var(--success-subtle);color:var(--green-muted)}
.badge--warning{background:var(--warning-subtle);color:#9a7b06}
.badge--error{background:var(--error-subtle);color:var(--error)}
.badge--info{background:var(--info-subtle);color:var(--blue-mid)}
.badge--neutral{background:var(--bg-subtle);color:var(--text-secondary)}

/* framework strip */
.strip{background:var(--gradient-tint);border-top:1px solid var(--border-default);border-bottom:1px solid var(--border-default)}
.strip__inner{padding-block:var(--space-12);text-align:center}
.strip__cap{font-size:0.9375rem;color:var(--text-secondary);max-width:580px;margin:10px auto 0}
.logo-row{display:flex;align-items:center;justify-content:center;flex-wrap:wrap;gap:var(--space-8) var(--space-12);margin-top:var(--space-10)}
.fw{display:inline-flex;align-items:center;gap:9px;opacity:0.5;filter:grayscale(1);color:var(--text-primary);font-weight:600;font-size:0.9375rem;transition:opacity var(--base) var(--ease-out),filter var(--base) var(--ease-out)}
.fw:hover{opacity:0.85;filter:grayscale(0.3)}
.fw svg{width:22px;height:22px;flex:none;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}

/* platform tabs */
.platform__grid{display:grid;grid-template-columns:300px 1fr;gap:var(--space-12);align-items:start;margin-top:var(--space-12)}
.feature-list{display:flex;flex-direction:column;gap:4px}
.feature-list__item{display:flex;align-items:flex-start;gap:12px;padding:12px 14px;border-radius:var(--radius-md);background:none;border:0;
  text-align:left;cursor:pointer;color:var(--text-secondary);transition:background-color var(--fast) var(--ease-out),color var(--fast) var(--ease-out)}
.feature-list__item:hover{background:var(--bg-surface);color:var(--text-primary)}
.feature-list__item[aria-selected="true"]{background:rgba(196,125,58,0.10);color:var(--amber-warm)}
.feature-list__item[aria-selected="true"] .fli__ico{color:var(--amber-warm)}
.fli__ico{flex:none;width:20px;height:20px;color:var(--text-muted);margin-top:1px}
.fli__ico svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.fli__tx{display:flex;flex-direction:column;gap:1px;min-width:0}
.fli__t{font-weight:600;font-size:0.9375rem;color:inherit}
.fli__d{font-size:0.8125rem;color:var(--text-muted);font-weight:400;line-height:1.4}
.feature-list__item[aria-selected="true"] .fli__d{color:rgba(150,100,45,0.85)}
.panel-wrap{border:1px solid var(--border-default);border-radius:var(--radius-xl);background:var(--bg-surface);box-shadow:var(--shadow-sm);overflow:hidden}
.panel{display:none;padding:var(--space-8)}
.panel.is-active{display:block;animation:fade-up var(--slow) var(--ease-smooth) both}
.panel__h{font-size:1.125rem;font-weight:650;letter-spacing:-0.01em}
.panel__p{font-size:0.9375rem;color:var(--text-secondary);margin:8px 0 var(--space-6);max-width:62ch}
.panel__stage{background:#fff;border:1px solid var(--border-default);border-radius:var(--radius-lg);padding:var(--space-5);overflow:hidden}

/* code */
.code{font-family:var(--font-mono);font-size:0.82rem;line-height:1.75;white-space:pre;overflow:auto;color:var(--near-black)}
.code .c{color:var(--text-muted)}
.code .kw{color:var(--brand-blue)}
.code .st{color:var(--amber-warm)}
.code .fn{color:var(--violet-mid)}
.code .nm{color:var(--green-muted)}
.code-card{background:#fff;border:1px solid var(--border-default);border-radius:var(--radius-lg);overflow:hidden}
.code-card__bd{padding:20px 22px;overflow:auto}
.code-card__ft{padding:11px 16px;border-top:1px solid var(--border-default);background:var(--bg-surface);font-size:0.75rem;color:var(--text-muted)}

.graph-svg{width:100%;height:auto}

/* live session blocks */
.sess{display:flex;flex-direction:column;gap:8px}
.sess .item{display:flex;align-items:center;gap:10px;padding:9px 11px;border:1px solid var(--border-default);border-radius:var(--radius-md);font-size:0.78rem;background:#fff}
.sess .item .nmx{font-family:var(--font-mono);color:var(--text-primary)}
.sess .item .mx{margin-left:auto;color:var(--text-muted);font-size:0.72rem;font-family:var(--font-mono)}
.spin{width:13px;height:13px;border-radius:50%;border:2px solid var(--primary);border-top-color:transparent;animation:spin .7s linear infinite;flex:none}
@keyframes spin{to{transform:rotate(360deg)}}
.steps{display:flex;flex-direction:column;gap:9px}
.steps .s{display:flex;align-items:center;gap:10px;font-size:0.85rem;color:var(--text-secondary)}
.steps .ck{width:18px;height:18px;border-radius:50%;background:var(--success-subtle);color:var(--success);display:grid;place-items:center;flex:none}
.steps .ck svg{width:11px;height:11px;fill:none;stroke:currentColor;stroke-width:3;stroke-linecap:round;stroke-linejoin:round}

.params{display:flex;flex-direction:column;gap:12px}
.prm{display:grid;grid-template-columns:130px 1fr 54px;align-items:center;gap:12px;font-size:0.8rem}
.prm .lab{font-family:var(--font-mono);color:var(--text-secondary)}
.prm .track{height:6px;border-radius:999px;background:var(--bg-subtle);position:relative;overflow:hidden}
.prm .fillb{position:absolute;left:0;top:0;bottom:0;border-radius:999px;background:linear-gradient(90deg,var(--brand-blue),var(--blue-light))}
.prm .val{font-family:var(--font-mono);text-align:right;color:var(--text-primary);font-weight:600}

.diff{font-family:var(--font-mono);font-size:0.78rem;line-height:1.6;border:1px solid var(--border-default);border-radius:var(--radius-md);overflow:hidden}
.diff .ln{padding:5px 12px;white-space:pre-wrap}
.diff .del{background:rgba(231,76,60,0.07);color:#b23227}
.diff .add{background:rgba(39,174,96,0.09);color:#1d7a45}
.diff .del::before{content:"- ";opacity:.6}.diff .add::before{content:"+ ";opacity:.6}

/* gradient sections */
.gsection{position:relative;color:#fff;overflow:hidden;padding-block:var(--space-32)}
.gsection .container{position:relative;z-index:2}
.gsection .gscrim{position:absolute;inset:0;z-index:1;pointer-events:none}
.gsection h2.h2,.gsection h3{color:#fff}
.gsection .lead{color:rgba(255,255,255,0.86)}
.g-blue{background:linear-gradient(168deg,#27317A 0%,#34429C 30%,#4A54B0 55%,#3B4596 80%,#2C3480 100%)}
.g-blue .gscrim{background:radial-gradient(ellipse 70% 60% at 50% 30%,rgba(139,164,240,0.22) 0%,transparent 65%)}
.g-amber{background:linear-gradient(150deg,#B5713A 0%,#9C6A8E 28%,#6B5EA8 55%,#42459E 80%,#2E3A86 100%)}
.g-amber .gscrim{background:radial-gradient(ellipse 60% 50% at 72% 22%,rgba(232,168,76,0.30) 0%,transparent 62%),radial-gradient(ellipse 60% 60% at 20% 80%,rgba(61,77,181,0.34) 0%,transparent 60%)}
.g-warm{background:linear-gradient(160deg,#D89047 0%,#C06840 24%,#9A5E7E 50%,#6357A4 76%,#3D4DB5 100%)}
.g-warm .gscrim{background:radial-gradient(ellipse 60% 50% at 28% 26%,rgba(232,168,76,0.34) 0%,transparent 60%),radial-gradient(ellipse 70% 60% at 80% 85%,rgba(45,58,140,0.38) 0%,transparent 62%)}
.on-warm h2.h2,.on-warm .lead,.on-warm .eyebrow{text-shadow:0 1px 3px rgba(13,14,18,0.32)}
.gsection__visual{margin-top:var(--space-12)}
.glass-frame{border-radius:var(--radius-2xl);padding:16px;background:rgba(255,255,255,0.10);border:1px solid rgba(255,255,255,0.20);box-shadow:0 30px 80px rgba(13,14,18,0.28)}

.feature-triplet{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-8);margin-top:var(--space-12)}
.ftr{display:flex;flex-direction:column;gap:8px}
.ftr__ic{width:38px;height:38px;border-radius:var(--radius-md);display:grid;place-items:center;background:rgba(255,255,255,0.12);border:1px solid rgba(255,255,255,0.22);color:#fff;margin-bottom:4px}
.ftr__ic svg{width:20px;height:20px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ftr h4{font-size:1rem;font-weight:650;color:#fff}
.ftr p{font-size:0.875rem;color:rgba(255,255,255,0.82);line-height:1.55}
.ftr--light .ftr__ic{background:var(--primary-subtle);border-color:transparent;color:var(--primary)}
.ftr--light h4{color:var(--text-primary)}
.ftr--light p{color:var(--text-secondary)}

/* monitoring card */
.mon-card{max-width:540px;margin-inline:auto}
.mon{background:#fff;border-radius:var(--radius-xl);overflow:hidden;color:var(--text-primary);box-shadow:0 30px 70px rgba(13,14,18,0.30)}
.mon__hd{display:flex;align-items:center;gap:10px;padding:14px 16px;border-bottom:1px solid var(--border-default);background:var(--bg-surface)}
.mon__hd .ttl{font-weight:650;font-size:0.9rem}
.mon__bd{padding:16px}
.bubble{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:14px;border-top-left-radius:4px;padding:11px 14px;font-size:0.875rem;color:var(--text-primary);margin-bottom:14px}

/* optimization grid */
.opt-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-5);margin-top:var(--space-12);align-items:start}
.ocard{background:rgba(255,255,255,0.97);border-radius:var(--radius-lg);padding:16px;color:var(--text-primary);box-shadow:0 16px 40px rgba(13,14,18,0.18)}
.ocard__hd{display:flex;align-items:center;gap:9px;margin-bottom:6px}
.ocard__hd .ic{width:30px;height:30px;border-radius:var(--radius-md);display:grid;place-items:center;background:var(--primary-subtle);color:var(--primary);flex:none}
.ocard__hd .ic svg{width:16px;height:16px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.ocard h4{font-size:0.95rem;font-weight:650}
.ocard p{font-size:0.8rem;color:var(--text-secondary);line-height:1.5;margin-top:4px}
.ocard__viz{margin-top:13px}
.ocard.span2{grid-column:span 2}
.metric{display:flex;align-items:baseline;gap:8px}
.metric .big{font-size:1.6rem;font-weight:700;letter-spacing:-0.02em}
.metric .up{color:var(--success);font-size:0.8rem;font-weight:600;display:inline-flex;align-items:center;gap:3px}
.bars{display:flex;flex-direction:column;gap:7px;font-size:0.74rem;color:var(--text-secondary)}
.bars div{display:flex;align-items:center;gap:8px}
.bars .t{flex:1;height:6px;border-radius:999px;background:var(--bg-subtle);position:relative;overflow:hidden}
.bars .t i{position:absolute;left:0;top:0;bottom:0;border-radius:999px;background:var(--brand-blue)}

/* integrations */
.intg-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-4);margin-top:var(--space-12)}
.intg{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;padding:22px 14px;border:1px solid var(--border-default);border-radius:var(--radius-lg);background:var(--bg-page);transition:transform var(--base) var(--ease-smooth),box-shadow var(--base) var(--ease-smooth),border-color var(--base) var(--ease-out)}
.intg:hover{transform:translateY(-3px);box-shadow:var(--shadow-md);border-color:var(--mid-gray)}
.intg__ic{width:44px;height:44px;display:grid;place-items:center;color:var(--text-primary)}
.intg__ic svg{width:32px;height:32px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.intg__t{font-size:0.85rem;font-weight:650}
.intg__s{font-size:0.72rem;color:var(--text-muted)}

.princ{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-4);margin-top:var(--space-6)}
.princ__card{display:flex;flex-direction:column;gap:7px;padding:18px;border-radius:var(--radius-lg);background:var(--bg-surface);border:1px solid var(--border-default)}
.princ__card .ic{width:34px;height:34px;border-radius:var(--radius-md);display:grid;place-items:center;background:#fff;border:1px solid var(--border-default);color:var(--primary);margin-bottom:4px}
.princ__card .ic svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.princ__card h4{font-size:0.9rem;font-weight:650}
.princ__card p{font-size:0.8rem;color:var(--text-secondary);line-height:1.5}

/* editorial blocks */
.split{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-16);align-items:center}
.split--narrow{gap:var(--space-12)}
.split__body h3{font-size:var(--fluid-h3);font-weight:650;letter-spacing:-0.015em;margin-bottom:var(--space-4)}
.split__body p{color:var(--text-secondary);margin-bottom:var(--space-4)}
.split__body p:last-child{margin-bottom:0}
.split--flip .split__media{order:-1}

.checklist{display:flex;flex-direction:column;gap:11px;margin-top:var(--space-5)}
.checklist li{position:relative;padding-left:29px;font-size:0.9375rem;color:var(--text-secondary);line-height:1.6}
.checklist li::before{content:"";position:absolute;left:0;top:3px;width:18px;height:18px;border-radius:50%;background:var(--primary-subtle);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%233B5BDB' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 6'/%3E%3C/svg%3E");
  background-size:11px;background-position:center;background-repeat:no-repeat}
.checklist li strong{color:var(--text-primary);font-weight:600}
.on-dark .checklist li{color:rgba(255,255,255,0.84)}
.on-dark .checklist li strong{color:#fff}
.on-dark .checklist li::before{background-color:rgba(255,255,255,0.16);
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M5 12l5 5L20 6'/%3E%3C/svg%3E")}

/* stats band */
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--border-default);border-radius:var(--radius-xl);overflow:hidden;background:var(--bg-page)}
.stats__cell{padding:var(--space-8) var(--space-6);border-right:1px solid var(--border-default)}
.stats__cell:last-child{border-right:0}
.stats__n{font-size:1.75rem;font-weight:700;letter-spacing:-0.03em;color:var(--text-primary);font-variant-numeric:tabular-nums}
.stats__l{font-size:0.8125rem;color:var(--text-muted);margin-top:6px;line-height:1.45}

/* numbered steps */
.flow{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-5);margin-top:var(--space-12);counter-reset:flow}
.flow__step{position:relative;padding:var(--space-6);border:1px solid var(--border-default);border-radius:var(--radius-lg);background:var(--bg-page);counter-increment:flow}
.flow__step::before{content:"0" counter(flow);font-family:var(--font-mono);font-size:0.75rem;font-weight:600;color:var(--primary);display:block;margin-bottom:var(--space-4)}
.flow__step h4{font-size:0.9375rem;font-weight:650;margin-bottom:6px}
.flow__step p{font-size:0.85rem;color:var(--text-secondary);line-height:1.55}

/* definition cards */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-5)}
.cards--2{grid-template-columns:repeat(2,1fr)}
.card{padding:var(--space-6);border:1px solid var(--border-default);border-radius:var(--radius-lg);background:var(--bg-page);
  transition:box-shadow var(--base) var(--ease-smooth),border-color var(--base) var(--ease-out)}
.card:hover{box-shadow:var(--shadow-md);border-color:var(--mid-gray)}
.card__ic{width:36px;height:36px;border-radius:var(--radius-md);display:grid;place-items:center;background:var(--primary-subtle);color:var(--primary);margin-bottom:var(--space-4)}
.card__ic svg{width:19px;height:19px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.card h4{font-size:0.9375rem;font-weight:650;margin-bottom:7px}
.card h3{font-size:1.0625rem;font-weight:650;margin-bottom:8px;letter-spacing:-0.01em}
.card p{font-size:0.875rem;color:var(--text-secondary);line-height:1.6}
.card__kicker{font-family:var(--font-mono);font-size:0.7rem;color:var(--text-muted);display:block;margin-bottom:10px}

/* spec table */
.table-wrap{border:1px solid var(--border-default);border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-page)}
table.spec{width:100%;border-collapse:collapse;font-size:0.875rem}
table.spec caption{text-align:left;padding:14px 18px;font-size:0.75rem;font-weight:600;letter-spacing:0.06em;text-transform:uppercase;color:var(--text-muted);background:var(--bg-surface);border-bottom:1px solid var(--border-default)}
table.spec th{text-align:left;font-weight:600;font-size:0.75rem;letter-spacing:0.04em;text-transform:uppercase;color:var(--text-muted);padding:12px 18px;border-bottom:1px solid var(--border-default);background:var(--bg-surface)}
table.spec td{padding:14px 18px;border-bottom:1px solid var(--border-default);color:var(--text-secondary);vertical-align:top}
table.spec tbody tr:last-child td{border-bottom:0}
table.spec td:first-child{color:var(--text-primary);font-weight:550;white-space:nowrap}
table.spec td code{color:var(--brand-blue);background:var(--primary-subtle);padding:1px 6px;border-radius:var(--radius-sm)}

/* callout */
.callout{display:flex;gap:14px;padding:var(--space-5) var(--space-6);border-radius:var(--radius-lg);background:var(--bg-surface);border:1px solid var(--border-default);border-left:3px solid var(--primary)}
.callout__ic{flex:none;width:22px;height:22px;color:var(--primary);margin-top:1px}
.callout__ic svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.callout h4{font-size:0.9375rem;font-weight:650;margin-bottom:5px}
.callout p{font-size:0.875rem;color:var(--text-secondary);line-height:1.6}
.callout--amber{border-left-color:var(--amber-warm)}
.callout--amber .callout__ic{color:var(--amber-warm)}

/* use cases */
.usecases{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-5);margin-top:var(--space-12)}
.uc{display:flex;flex-direction:column;border:1px solid var(--border-default);border-radius:var(--radius-lg);overflow:hidden;background:var(--bg-page)}
.uc__hd{padding:var(--space-5) var(--space-6);border-bottom:1px solid var(--border-default);background:var(--bg-surface)}
.uc__hd span{font-family:var(--font-mono);font-size:0.7rem;color:var(--text-muted);display:block;margin-bottom:6px}
.uc__hd h4{font-size:1rem;font-weight:650;letter-spacing:-0.01em}
.uc__bd{padding:var(--space-6);display:flex;flex-direction:column;gap:var(--space-4);flex:1}
.uc__bd p{font-size:0.875rem;color:var(--text-secondary);line-height:1.6}
.uc__bd dl{display:flex;flex-direction:column;gap:10px;margin-top:auto;padding-top:var(--space-4);border-top:1px solid var(--border-default)}
.uc__bd dt{font-size:0.6875rem;font-weight:600;letter-spacing:0.07em;text-transform:uppercase;color:var(--text-muted)}
.uc__bd dd{font-size:0.8125rem;color:var(--text-secondary);line-height:1.5;margin-top:3px}

/* faq */
.faq{max-width:820px;margin-inline:auto;margin-top:var(--space-12);border-top:1px solid var(--border-default)}
.faq details{border-bottom:1px solid var(--border-default)}
.faq summary{display:flex;align-items:center;justify-content:space-between;gap:var(--space-5);padding:var(--space-5) 0;cursor:pointer;
  font-size:1rem;font-weight:600;color:var(--text-primary);list-style:none}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"";flex:none;width:20px;height:20px;border-radius:var(--radius-sm);
  background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%234A4E5C' stroke-width='2' stroke-linecap='round'%3E%3Cpath d='M12 5v14M5 12h14'/%3E%3C/svg%3E") center/16px no-repeat;
  transition:transform var(--base) var(--ease-smooth)}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq summary:hover{color:var(--primary)}
.faq__a{padding:0 0 var(--space-6);max-width:68ch}
.faq__a p{font-size:0.9375rem;color:var(--text-secondary);line-height:1.68}
.faq__a p + p{margin-top:var(--space-3)}

/* cta band */
.ctaband{position:relative;background:var(--gradient-arch);overflow:hidden;padding-block:var(--space-32) var(--space-24);text-align:center}
.ctaband__arch{position:absolute;left:50%;bottom:0;transform:translateX(-50%);width:min(900px,96vw);height:520px;z-index:0;pointer-events:none}
.ctaband__inner{position:relative;z-index:2;max-width:720px;margin-inline:auto}
.ctaband h2{font-size:var(--fluid-display);font-weight:700;letter-spacing:-0.03em;line-height:1.06;margin-top:var(--space-4)}
.ctaband .lead{margin-top:var(--space-5);font-size:1.125rem}
.ctaband__cta{display:flex;gap:var(--space-3);justify-content:center;flex-wrap:wrap;margin-top:var(--space-8)}
.ctaband__proof{margin-top:var(--space-8);display:inline-flex;flex-wrap:wrap;gap:10px 20px;justify-content:center;font-size:0.8125rem;font-weight:550;color:var(--text-secondary)}
.ctaband__proof span{display:inline-flex;align-items:center;gap:7px}
.ctaband__proof span::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--primary)}

/* contact */
.contact{display:grid;grid-template-columns:1.05fr 0.95fr;gap:var(--space-16);align-items:start}
.contact__card{background:#fff;border:1px solid var(--border-default);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg);padding:var(--space-8)}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-4)}
.field{margin-bottom:var(--space-4);display:flex;flex-direction:column;gap:6px}
.field label{font-size:0.8125rem;font-weight:600;color:var(--text-primary)}
.field label .req{color:var(--error);margin-left:2px}
.input,.select,.textarea{width:100%;padding:11px 13px;border:1.5px solid var(--border-default);border-radius:var(--radius-md);
  background:var(--bg-page);font-size:0.9375rem;transition:border-color var(--fast) var(--ease-out),box-shadow var(--fast) var(--ease-out)}
.textarea{resize:vertical;min-height:112px;line-height:1.55}
.select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%234A4E5C' stroke-width='2.2' stroke-linecap='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 13px center;padding-right:38px}
.input:hover,.select:hover,.textarea:hover{border-color:var(--border-strong)}
.input:focus,.select:focus,.textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--primary-subtle);outline:none}
.input::placeholder,.textarea::placeholder{color:var(--text-muted)}
.field[data-invalid="true"] .input,.field[data-invalid="true"] .select,.field[data-invalid="true"] .textarea{border-color:var(--error)}
.field[data-invalid="true"] .input:focus,.field[data-invalid="true"] .textarea:focus{box-shadow:0 0 0 3px var(--error-subtle)}
.err{font-size:0.75rem;color:var(--error);display:none}
.field[data-invalid="true"] .err{display:block}
.form-foot{display:flex;align-items:center;gap:var(--space-4);margin-top:var(--space-5);flex-wrap:wrap}
.form-hint{font-size:0.75rem;color:var(--text-muted);max-width:30ch;line-height:1.5}
.form-success{display:none;text-align:center;padding:var(--space-8) var(--space-4)}
.form-success.show{display:block;animation:fade-up var(--slow) var(--ease-smooth) both}
.form-success .ok{width:56px;height:56px;border-radius:50%;background:var(--success-subtle);color:var(--success);display:grid;place-items:center;margin:0 auto var(--space-5)}
.form-success .ok svg{width:28px;height:28px;fill:none;stroke:currentColor;stroke-width:2.4;stroke-linecap:round;stroke-linejoin:round}
.form-success h3{font-size:1.25rem;margin-bottom:8px}
.form-success p{color:var(--text-secondary);font-size:0.9rem;max-width:44ch;margin-inline:auto}

.contact__aside h3{font-size:1.375rem;font-weight:700;letter-spacing:-0.02em;margin-bottom:var(--space-3)}
.contact__aside .intro{color:var(--text-secondary);font-size:0.9375rem;line-height:1.65}
.cinfo{display:flex;flex-direction:column;gap:var(--space-5);margin-top:var(--space-8);padding-top:var(--space-8);border-top:1px solid var(--border-default)}
.cinfo a,.cinfo div{display:flex;align-items:flex-start;gap:12px;color:var(--text-primary)}
.cinfo a>span:not(.ic),.cinfo div>span:not(.ic){display:flex;flex-direction:column;gap:3px}
.cinfo a:hover{color:var(--primary)}
.cinfo a:hover .ic{border-color:var(--primary)}
.cinfo .ic{width:38px;height:38px;border-radius:var(--radius-md);background:#fff;border:1px solid var(--border-default);display:grid;place-items:center;flex:none;color:var(--primary);transition:border-color var(--fast) var(--ease-out)}
.cinfo .ic svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.8;stroke-linecap:round;stroke-linejoin:round}
.cinfo .lbl{font-size:0.7rem;font-weight:600;letter-spacing:0.06em;text-transform:uppercase;color:var(--text-muted)}
.cinfo .val{font-size:0.9rem;font-weight:550;line-height:1.45}

/* docs layout */
.docs{display:grid;grid-template-columns:238px 1fr;gap:var(--space-16);align-items:start}
.docs__side{position:sticky;top:calc(var(--nav-h) + var(--space-8));max-height:calc(100vh - var(--nav-h) - var(--space-16));overflow-y:auto}
.docs__side h4{font-size:0.6875rem;font-weight:700;letter-spacing:0.09em;text-transform:uppercase;color:var(--text-muted);margin-bottom:var(--space-4)}
.docs__side ol{display:flex;flex-direction:column;gap:2px;border-left:1px solid var(--border-default);margin-bottom:var(--space-8)}
.docs__side a{display:block;font-size:0.8438rem;color:var(--text-secondary);padding:7px 0 7px var(--space-4);margin-left:-1px;border-left:1px solid transparent;transition:color var(--fast) var(--ease-out),border-color var(--fast) var(--ease-out)}
.docs__side a:hover{color:var(--text-primary)}
.docs__side a.is-current{color:var(--primary);border-left-color:var(--primary);font-weight:550}
.docs__main{min-width:0;max-width:760px}
.doc-sec{padding-bottom:var(--space-16)}
.doc-sec + .doc-sec{padding-top:var(--space-4)}
.doc-sec h2{font-size:1.5rem;font-weight:700;letter-spacing:-0.022em;margin-bottom:var(--space-4);scroll-margin-top:calc(var(--nav-h) + 32px)}
.doc-sec h3{font-size:1.0625rem;font-weight:650;margin:var(--space-8) 0 var(--space-3)}
.doc-sec p{color:var(--text-secondary);line-height:1.72;margin-bottom:var(--space-4)}
.doc-sec p:last-child{margin-bottom:0}
.doc-sec > .code-card,.doc-sec > .table-wrap,.doc-sec > .callout,.doc-sec > .cards{margin-block:var(--space-6)}
.doc-sec ul.bullets{display:flex;flex-direction:column;gap:9px;margin-bottom:var(--space-5)}
.doc-sec ul.bullets li{position:relative;padding-left:18px;color:var(--text-secondary);line-height:1.65}
.doc-sec ul.bullets li::before{content:"";position:absolute;left:0;top:9px;width:5px;height:5px;border-radius:50%;background:var(--mid-gray)}
.doc-sec ul.bullets li strong{color:var(--text-primary);font-weight:600}
.doc-sec code{background:var(--bg-surface);border:1px solid var(--border-default);padding:1px 5px;border-radius:var(--radius-sm);color:var(--text-primary)}

/* footer */
.footer{border-top:1px solid var(--border-default);background:var(--bg-page);padding:var(--space-16) 0 var(--space-8)}
.footer__grid{display:grid;grid-template-columns:1.7fr 1fr 1fr 1fr;gap:var(--space-12)}
.footer__brand .brand{margin-bottom:var(--space-4)}
.footer__tag{color:var(--text-secondary);font-size:0.9rem;max-width:36ch;line-height:1.6}
.footer__acc{margin-top:var(--space-4);font-size:0.8rem;color:var(--text-muted);display:inline-flex;align-items:center;gap:8px}
.footer__acc .spark{width:6px;height:6px;border-radius:50%;background:var(--amber-light)}
.footer__col h4{font-size:0.6875rem;font-weight:700;letter-spacing:0.09em;text-transform:uppercase;margin-bottom:var(--space-5);color:var(--text-muted)}
.footer__link{display:block;font-size:0.875rem;color:var(--text-secondary);margin-bottom:11px;transition:color var(--fast) var(--ease-out)}
.footer__link:hover{color:var(--text-primary)}
.footer__bottom{margin-top:var(--space-16);padding-top:var(--space-6);border-top:1px solid var(--border-default);
  display:flex;justify-content:space-between;gap:var(--space-4);flex-wrap:wrap;font-size:0.8125rem;color:var(--text-muted)}

/* reveal */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity var(--slow) var(--ease-smooth),transform var(--slow) var(--ease-smooth)}
.js .reveal.is-visible{opacity:1;transform:none}
@keyframes fade-up{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:none}}

/* responsive */
@media (max-width:1100px){
  .footer__grid{grid-template-columns:1fr 1fr;gap:var(--space-10) var(--space-8)}
  .footer__brand{grid-column:1 / -1}
  .intg-grid,.princ{grid-template-columns:repeat(2,1fr)}
  .stats{grid-template-columns:repeat(2,1fr)}
  .stats__cell:nth-child(2){border-right:0}
  .stats__cell:nth-child(1),.stats__cell:nth-child(2){border-bottom:1px solid var(--border-default)}
  .flow{grid-template-columns:repeat(2,1fr)}
  .docs{grid-template-columns:1fr;gap:var(--space-10)}
  .docs__side{position:static;max-height:none}
  .docs__side ol{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));border-left:0;gap:0 var(--space-5)}
  .docs__side a{border-left:0;padding-left:0}
  .docs__side a.is-current{border-left:0}
  .docs__main{max-width:none}
}
@media (max-width:1023px){
  :root{--container-padding:24px}
  .nav__links,.nav__actions .btn{display:none}
  .nav__hamburger{display:flex}
  .nav__links--mobile{
    display:flex;flex-direction:column;align-items:stretch;gap:0;
    position:fixed;inset:var(--nav-h) 0 0;padding:var(--space-6) var(--container-padding) var(--space-10);
    background:var(--bg-page);z-index:var(--z-overlay);overflow-y:auto;
    transform:translateX(100%);visibility:hidden;
    transition:transform var(--base) var(--ease-out),visibility 0s linear var(--base)}
  .nav__links--mobile.is-open{transform:none;visibility:visible;transition:transform var(--base) var(--ease-out),visibility 0s}
  .nav__links--mobile .nav__link{font-size:1.05rem;padding:16px 4px;border-bottom:1px solid var(--border-default);color:var(--text-primary)}
  .nav__links--mobile .nav__link::after{display:none}
  .nav__links--mobile .btn{display:inline-flex;margin-top:var(--space-6)}
  .platform__grid{grid-template-columns:1fr;gap:var(--space-8)}
  .feature-list{flex-direction:row;overflow-x:auto;gap:6px;padding-bottom:6px;scrollbar-width:none}
  .feature-list::-webkit-scrollbar{display:none}
  .feature-list__item{flex:none;flex-direction:column;align-items:flex-start;min-width:170px;border:1px solid var(--border-default)}
  .split,.contact{grid-template-columns:1fr;gap:var(--space-10)}
  .split--flip .split__media{order:0}
  .cards,.usecases,.feature-triplet{grid-template-columns:1fr 1fr}
  .opt-grid{grid-template-columns:1fr 1fr}
  .ocard.span2{grid-column:span 2}
  .app__body{grid-template-columns:1fr !important}
  .app__col--rail{border-right:0;border-bottom:1px solid var(--border-default)}
  .app__col--insp{border-left:0 !important;border-top:1px solid var(--border-default)}
}
@media (max-width:720px){
  :root{--container-padding:20px;--section-py:var(--space-20);--section-py-lg:var(--space-24)}
  .gsection{padding-block:var(--space-24)}
  .ctaband{padding-block:var(--space-24) var(--space-20)}
  .cards,.usecases,.feature-triplet,.intg-grid,.princ,.flow,.opt-grid,.stats{grid-template-columns:1fr}
  .ocard.span2{grid-column:span 1}
  .stats__cell{border-right:0;border-bottom:1px solid var(--border-default)}
  .stats__cell:last-child{border-bottom:0}
  .form-row{grid-template-columns:1fr;gap:0}
  .hero__cta .btn,.ctaband__cta .btn{flex:1 1 auto}
  .ctaband h2{font-size:clamp(2rem,9vw,2.75rem)}
  .footer__grid{grid-template-columns:1fr}
  .contact__card{padding:var(--space-6)}
  .panel{padding:var(--space-5)}
  .trace{font-size:0.72rem}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:0.01ms !important;animation-iteration-count:1 !important;transition-duration:0.01ms !important;scroll-behavior:auto !important}
  .js .reveal{opacity:1 !important;transform:none !important}
  .live-dot::after{display:none}
}