/* ==========================================================================
   DeX — Fire & Safety pages
   Tokens follow docs/DEX_DESIGN_SYSTEM.md and the colakin.com DeX palette.
   Scoped to .fs-page so nothing here can reach the rest of the site.

   1. Tokens + base          5. Visual components (console, diagrams, flows)
   2. Chrome                 6. Responsive
   3. Page sections          7. Motion
   4. Form                   8. UX utilities, reduced motion, print
   ========================================================================== */

/* ── 1. Tokens + base ───────────────────────────────────────────────────── */
.fs-page{
  --blue:#2563EB; --deep:#1E40AF; --navy:#123FA9;
  --yellow:#FBBF24; --yellow2:#D89B00; --amber:#7A5600;
  --alert:#E5483A; --alert-soft:#FDEBE8; --ok:#0E7C58; --ok-soft:#E3F6EF;
  --gate:#8A6100; --gate-soft:#FFF6D9;
  --white:#FFFFFF; --soft:#F1F5F9; --sec:#E2E8F0;
  --ink:#0F172A; --body:#374151; --muted:#5B6475;
  --lightblue:#F8FBFF; --paleblue:#EEF5FF;
  --line:rgba(37,99,235,.14); --line2:rgba(37,99,235,.10); --line3:rgba(37,99,235,.28);
  --sh1:0 16px 40px rgba(15,23,42,.06);
  --sh2:0 18px 50px rgba(37,99,235,.12);
  --sh3:0 30px 60px -24px rgba(37,99,235,.45);
  --shbtn:0 12px 24px rgba(37,99,235,.18);
  --wrap:1280px;
  --sans:"Manrope","Inter Tight","DM Sans",Inter,system-ui,-apple-system,"Segoe UI",sans-serif;
  --disp:"Inter Tight","Manrope",Inter,system-ui,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  color-scheme:light;
}
.fs-page *,.fs-page *::before,.fs-page *::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body.fs-page{margin:0;background:var(--white);color:var(--body);font-family:var(--sans);
  font-size:16px;line-height:1.55;font-weight:500;-webkit-font-smoothing:antialiased;overflow-x:hidden}
.fs-page img{max-width:100%;height:auto;display:block}
.fs-page a{color:var(--deep);text-decoration:none}
.fs-page a:hover{color:var(--blue)}
.fs-page h1,.fs-page h2,.fs-page h3,.fs-page h4{font-family:var(--disp);color:var(--ink);margin:0;text-wrap:balance;letter-spacing:-.018em}
.fs-page p{margin:0}
.fs-page ul,.fs-page ol{margin:0;padding:0;list-style:none}
.fs-page figure{margin:0}
.fs-page :focus-visible{outline:3px solid var(--blue);outline-offset:3px;border-radius:6px}
.fs-page [id]{scroll-margin-top:92px}
.lu{flex:none;display:inline-block;vertical-align:middle}
.fs-skip{position:absolute;left:-9999px}
.fs-skip:focus{left:16px;top:16px;z-index:200;background:#fff;padding:10px 16px;border-radius:10px;box-shadow:var(--sh2)}

.fs-wrap{max-width:var(--wrap);margin:0 auto;padding-inline:24px}
.fs-sect{padding-block:96px}
.fs-soft{background:var(--soft)}
.fs-tintblue{background:linear-gradient(180deg,#FFFFFF,#F7FAFF 52%,#FFFDF5)}
.fs-page .fs-mt{margin-top:36px}.fs-page .fs-mt-s{margin-top:22px}.fs-page .fs-mt-l{margin-top:52px}
.fs-grid{display:grid;gap:18px}
.fs-g2{grid-template-columns:repeat(2,minmax(0,1fr))}

/* ── 2. Chrome ──────────────────────────────────────────────────────────── */
.fs-hdr{position:sticky;top:0;z-index:90;background:#fff;box-shadow:0 10px 60px rgba(37,99,235,.12)}
.fs-section-nav{position:relative;top:auto;z-index:20;border-top:1px solid rgba(37,99,235,.08);box-shadow:0 10px 34px rgba(37,99,235,.08)}
.fs-hdr-in{max-width:var(--wrap);margin:0 auto;padding:12px 24px;display:flex;align-items:center;gap:22px}
.fs-logo{display:flex;align-items:center;gap:10px;background:linear-gradient(135deg,var(--deep),#173a9c);
  border-radius:12px;padding:9px 16px;flex:none}
.fs-logo img{width:118px;filter:brightness(0) invert(1)}
.fs-logo span{color:#fff;font:800 11px/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;
  border-left:1px solid rgba(255,255,255,.3);padding-left:10px}
.fs-nav{display:flex;gap:4px;margin-left:auto;align-items:center;flex-wrap:wrap}
.fs-nav a{font:700 13.5px/1 var(--sans);color:var(--body);padding:10px 12px;border-radius:8px}
.fs-section-nav .fs-logo{min-width:max-content;border:1px solid rgba(37,99,235,.14);background:rgba(37,99,235,.06)}
.fs-section-nav .fs-logo span{display:inline;border-left:0;padding-left:0;font:900 14px/1 var(--disp);letter-spacing:.04em;text-transform:none;color:var(--blue2)}
.fs-nav a:hover{color:var(--blue);background:rgba(37,99,235,.055)}
.fs-nav a[aria-current]{color:var(--deep);background:rgba(37,99,235,.075)}
.fs-nav a.fs-btn{color:#fff;margin-left:8px}
.fs-nav a.fs-btn:hover{color:#fff;background:linear-gradient(135deg,var(--blue),var(--deep))}

.fs-btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;
  min-height:46px;padding:12px 22px;border-radius:11px;border:0;cursor:pointer;
  font:800 14px/1.2 var(--sans);letter-spacing:.005em;text-align:center;
  background:linear-gradient(135deg,var(--blue),var(--deep));color:#fff;box-shadow:var(--shbtn);
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease}
.fs-btn:hover{transform:translateY(-2px);box-shadow:0 18px 34px rgba(37,99,235,.28);color:#fff}
.fs-page a.fs-btn,.fs-page a.fs-btn:hover,.fs-page a.fs-btn:visited{color:#fff}
.fs-btn--ghost{background:rgba(37,99,235,.06);color:var(--deep);border:1px solid var(--line3);box-shadow:none}
.fs-page a.fs-btn--ghost,.fs-page a.fs-btn--ghost:hover{color:var(--deep)}
.fs-btn--ghost:hover{background:rgba(37,99,235,.11);box-shadow:0 10px 22px rgba(37,99,235,.14)}
.fs-btnrow{display:flex;flex-wrap:wrap;gap:12px}

.fs-pill{display:inline-flex;align-items:center;gap:7px;border-radius:999px;padding:6px 12px;
  font:800 10.5px/1 var(--sans);letter-spacing:.12em;text-transform:uppercase;
  color:var(--deep);background:rgba(37,99,235,.055);border:1px solid rgba(37,99,235,.15)}
.fs-pill--y{color:var(--amber);background:rgba(251,191,36,.13);border-color:rgba(251,191,36,.34)}
.fs-eyebrow{display:flex;align-items:center;gap:8px;font:800 11.5px/1.3 var(--sans);letter-spacing:.14em;
  text-transform:uppercase;color:var(--blue);margin-bottom:14px}

.fs-head{max-width:820px}
.fs-head--mid{margin-inline:auto;text-align:center}
.fs-head--mid .fs-eyebrow{justify-content:center}
.fs-head h2{font-size:clamp(28px,3.4vw,46px);line-height:1.08;font-weight:800}
.fs-head h2 .ac{color:var(--blue)}
.fs-head p{margin-top:14px;font-size:clamp(15px,1.2vw,17.5px);line-height:1.58;color:var(--body);max-width:720px}
.fs-head--mid p{margin-inline:auto}

.fs-crumb{display:flex;flex-wrap:wrap;gap:6px;align-items:center;font:700 12px/1.4 var(--sans);
  color:var(--muted);margin-bottom:20px}
.fs-crumb a{color:var(--muted)}
.fs-crumb a:hover{color:var(--blue)}
.fs-crumb span[aria-hidden]{display:inline-flex;opacity:.55}

.fs-foot{position:relative;overflow:hidden;color:#fff;
  background:linear-gradient(135deg,#174FC5 0%,#123FA9 45%,#0F338F 100%);padding-block:60px 30px}
.fs-foot::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 12% 10%,rgba(255,255,255,.11),transparent 44%),
             radial-gradient(circle at 92% 86%,rgba(251,191,36,.10),transparent 46%)}
.fs-foot>*{position:relative;z-index:1}
.fs-foot-top{display:grid;grid-template-columns:minmax(0,1.2fr) repeat(2,minmax(0,.8fr));gap:34px}
.fs-foot-connect{font:800 clamp(24px,2.8vw,40px)/1.08 var(--disp);display:inline-block}
.fs-page a.fs-foot-connect{color:#fff}
.fs-page a.fs-foot-connect:hover{color:var(--yellow)}
.fs-foot p{margin-top:14px;color:rgba(255,255,255,.82);font-size:14px;line-height:1.6;max-width:42ch}
.fs-foot h4{font:800 10.5px/1.2 var(--sans);letter-spacing:.13em;text-transform:uppercase;
  color:rgba(255,255,255,.65);margin-bottom:14px}
.fs-foot ul{display:flex;flex-direction:column;gap:9px}
.fs-page .fs-foot ul a{color:rgba(255,255,255,.9);font-size:13.5px;font-weight:600}
.fs-page .fs-foot ul a:hover{color:var(--yellow)}
.fs-foot-rule{height:1px;background:rgba(255,255,255,.18);margin:38px 0 22px}
.fs-foot-bot{display:flex;flex-wrap:wrap;gap:14px 26px;align-items:center;
  color:rgba(255,255,255,.72);font-size:12.5px;font-weight:600}
.fs-foot-bot .r{margin-left:auto}

/* ── 3. Page sections ───────────────────────────────────────────────────── */
/* hero */
.fs-hero{position:relative;overflow:hidden;background:var(--soft);padding-block:70px 80px}
.fs-hero::before{content:"";position:absolute;inset:0;
  background-image:radial-gradient(rgba(37,99,235,.14) 1.4px,transparent 1.4px),
                   radial-gradient(rgba(251,191,36,.16) 1.4px,transparent 1.4px);
  background-size:28px 28px,28px 28px;background-position:0 0,14px 14px}
.fs-hero::after{content:"";position:absolute;right:-90px;top:-70px;width:520px;height:520px;z-index:0;
  background:url("/assets/dex-icon-blue.svg") center/contain no-repeat;opacity:.05;pointer-events:none}
.fs-hero>*{position:relative;z-index:1}
.fs-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,.68fr);gap:44px;align-items:center}
.fs-hero-grid--run{grid-template-columns:minmax(0,1fr) minmax(0,.92fr);gap:48px}
.fs-hero h1{font-size:clamp(34px,4.6vw,60px);line-height:1.04;font-weight:800}
.fs-hero-grid--run h1{font-size:clamp(32px,4vw,54px)}
.fs-hero h1 .ac{color:var(--blue)}
.fs-hero .fs-lede{margin-top:20px;font-size:clamp(15.5px,1.3vw,19px);line-height:1.55;color:var(--body);max-width:58ch}
.fs-hero .fs-btnrow{margin-top:28px}
.fs-proof{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:24px;font:700 13.5px/1.3 var(--sans);color:var(--body)}
.fs-proof span{display:inline-flex;align-items:center;gap:8px}
.fs-proof .lu{color:var(--blue)}

/* answer card (AEO) */
.fs-answer{background:#fff;border:1px solid var(--line);border-left:4px solid var(--blue);
  border-radius:16px;padding:26px 28px;box-shadow:var(--sh1)}
.fs-answer h2{display:flex;align-items:center;gap:8px;font-size:13px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--blue)}
.fs-answer p{margin-top:12px;font-size:16.5px;line-height:1.6;color:var(--ink);font-weight:600}
.fs-kv{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:18px;
  margin-top:20px;padding-top:18px;border-top:1px dashed var(--line3)}
.fs-kv div{min-width:0}
.fs-kv dt{display:flex;align-items:center;gap:6px;font:800 10.5px/1.2 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.fs-kv dt .lu{color:var(--blue)}
.fs-kv dd{margin:6px 0 0;font:700 14.5px/1.4 var(--sans);color:var(--ink)}

/* built-for strip */
.fs-strip{padding-block:28px;border-bottom:1px solid var(--sec);background:#fff}
.fs-strip .fs-wrap{display:flex;flex-direction:column;gap:14px}
.fs-strip p{font:800 11px/1.3 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.fs-strip ul{display:flex;flex-wrap:wrap;gap:12px 32px}
.fs-strip li{display:flex;align-items:center;gap:9px;font:800 14.5px/1.3 var(--sans);color:var(--ink)}
.fs-strip li .lu{color:var(--blue)}

/* cards */
.fs-card{background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px;box-shadow:var(--sh1);min-width:0}
.fs-card--row{display:flex;gap:16px;align-items:flex-start}
.fs-card h3{font-size:18px;font-weight:800;line-height:1.22}
.fs-card p{margin-top:8px;font-size:14.5px;line-height:1.55;color:var(--body)}
.fs-ibox{width:46px;height:46px;border-radius:13px;display:inline-grid;place-items:center;flex:none;
  background:var(--paleblue);color:var(--blue)}
.fs-ibox--solid{background:linear-gradient(135deg,var(--blue),var(--deep));color:#fff;box-shadow:0 10px 22px rgba(37,99,235,.24)}
.fs-ibox--y{background:linear-gradient(145deg,var(--yellow),var(--yellow2));color:#3D2B00}
.fs-chips{display:flex;flex-wrap:wrap;gap:8px}
.fs-chip{display:inline-flex;align-items:center;gap:7px;padding:7px 12px;border-radius:999px;background:#fff;
  border:1px solid var(--line);font:700 13px/1.2 var(--sans);color:var(--ink)}
.fs-chip .lu{color:var(--blue)}
.fs-chip--ok{background:var(--ok-soft);border-color:#B8E6D4}
.fs-chip--ok .lu{color:var(--ok)}
.fs-mini{display:flex;align-items:center;gap:7px;font:800 11px/1.2 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:10px}

/* lifecycle map */
.fs-life{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.fs-life-bar{height:4px;border-radius:999px;margin-bottom:22px;
  background:linear-gradient(90deg,var(--blue),var(--deep) 45%,var(--yellow) 100%)}
.fs-life-col{background:#fff;border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--sh1);
  display:grid;grid-template-columns:40px minmax(0,1fr);column-gap:12px;align-content:start;min-width:0}
.fs-life-ic{grid-row:span 2;width:40px;height:40px;border-radius:12px;display:grid;place-items:center;
  background:linear-gradient(135deg,var(--blue),var(--deep));color:#fff}
.fs-life-col:last-child .fs-life-ic{background:linear-gradient(145deg,var(--yellow),var(--yellow2));color:#3D2B00}
.fs-life-n{font:800 10px/1 var(--mono);color:var(--gate);letter-spacing:.1em;margin:3px 0 4px;display:block}
.fs-life-col h3{font-size:15px;font-weight:800;line-height:1.25}
.fs-life-col ul{grid-column:1/-1}
.fs-life-col ul{margin-top:10px;display:flex;flex-direction:column;gap:7px}
.fs-life-col li a{display:flex;gap:8px;align-items:flex-start;font:700 12.5px/1.32 var(--sans);
  color:var(--body);background:var(--paleblue);border:1px solid var(--line2);border-radius:9px;padding:9px 10px;
  transition:background .2s,border-color .2s,color .2s}
.fs-life-col li a .lu{color:var(--blue);margin-top:1px}
.fs-life-col li a span{flex:1;min-width:0}
.fs-life-col li a b{font:800 10px/1.4 var(--mono);color:var(--muted)}
.fs-life-col li a:hover{background:#fff;border-color:var(--line3);color:var(--deep)}

/* dark band */
.fs-dark{position:relative;overflow:hidden;color:#E5EDFF;
  background:linear-gradient(135deg,#0E2C7E 0%,#123FA9 48%,#1E40AF 100%);padding-block:92px}
.fs-dark::before{content:"";position:absolute;left:-140px;bottom:-160px;width:620px;height:620px;
  background:url("/assets/dex-icon-blue.svg") center/contain no-repeat;opacity:.07;
  filter:brightness(4) saturate(0);pointer-events:none}
.fs-dark::after{content:"";position:absolute;right:-10%;top:-30%;width:70%;height:120%;pointer-events:none;
  background:radial-gradient(ellipse at center,rgba(251,191,36,.13),transparent 62%)}
.fs-dark>*{position:relative;z-index:1}
.fs-dark h2,.fs-dark h3{color:#fff}
.fs-dark .fs-head h2 .ac{color:var(--yellow)}
.fs-dark .fs-head p{color:#BFD4FF}
.fs-dark .fs-eyebrow{color:var(--yellow)}

/* expert */
.fs-expert{display:grid;grid-template-columns:minmax(230px,.62fr) minmax(0,1fr);gap:34px;align-items:center;
  background:linear-gradient(135deg,#F8FBFF,#EEF5FF 52%,#F8FBFF);border:1px solid var(--line);
  border-radius:22px;padding:34px;box-shadow:var(--sh2);overflow:hidden}
.fs-expert-img{position:relative}
.fs-expert-img::before{content:"";position:absolute;inset:6% 4% 0;border-radius:50% 50% 24px 24px;
  background:linear-gradient(160deg,rgba(37,99,235,.14),rgba(251,191,36,.12))}
.fs-expert-img img{position:relative;border-radius:16px}
.fs-expert h2{font-size:clamp(25px,2.7vw,38px);line-height:1.08;font-weight:800}
.fs-expert blockquote{margin:18px 0 22px;padding-left:18px;border-left:3px solid var(--yellow);
  font:700 17px/1.5 var(--disp);color:var(--ink)}
.fs-portrait{position:relative}
.fs-portrait::before{content:"";position:absolute;left:4%;right:4%;top:2%;bottom:0;border-radius:28px;
  background:linear-gradient(165deg,rgba(37,99,235,.16),rgba(251,191,36,.14));box-shadow:0 30px 70px rgba(37,99,235,.18)}
.fs-portrait img{position:relative}
.fs-quote{position:relative;margin:36px 0 0;padding:30px 34px 28px 84px;border-radius:20px;max-width:960px;
  background:linear-gradient(135deg,#F8FBFF,#EEF5FF);border:1px solid var(--line)}
.fs-quote>.lu{position:absolute;left:30px;top:30px;color:var(--yellow2)}
.fs-quote span{display:block;font:800 clamp(19px,2.2vw,27px)/1.38 var(--disp);color:var(--ink)}
.fs-quote cite{display:block;margin-top:14px;font:700 13.5px/1.4 var(--sans);color:var(--muted);font-style:normal}

/* FAQ */
.fs-faqwrap{display:grid;grid-template-columns:minmax(0,.8fr) minmax(0,1.4fr);gap:48px;align-items:start}
.fs-faqwrap .fs-head{position:sticky;top:110px}
.fs-faq{border:1px solid var(--line);border-radius:16px;background:#fff;box-shadow:var(--sh1);overflow:hidden}
.fs-faq details{border-bottom:1px solid var(--sec)}
.fs-faq details:last-child{border-bottom:0}
.fs-faq summary{cursor:pointer;list-style:none;padding:20px 54px 20px 22px;position:relative;
  font:800 16px/1.4 var(--disp);color:var(--ink)}
.fs-faq summary::-webkit-details-marker{display:none}
.fs-faq summary::after{content:"";position:absolute;right:22px;top:26px;width:11px;height:11px;
  border-right:2.4px solid var(--blue);border-bottom:2.4px solid var(--blue);transform:rotate(45deg);transition:transform .22s ease}
.fs-faq details[open] summary::after{transform:rotate(-135deg);top:30px}
.fs-faq summary:hover{background:var(--lightblue)}
.fs-faq-a{padding:0 22px 22px;font-size:14.5px;line-height:1.62;color:var(--body);max-width:78ch}

/* ── 4. Form (CTA band) ─────────────────────────────────────────────────── */
.fs-cta{position:relative;overflow:hidden;padding-block:86px;
  background:linear-gradient(135deg,#123FA9 0%,#0F338F 52%,#0B2A78 100%)}
.fs-cta::before{content:"";position:absolute;inset:0;pointer-events:none;
  background:radial-gradient(circle at 15% 15%,rgba(255,255,255,.12),transparent 46%),
             radial-gradient(circle at 88% 82%,rgba(251,191,36,.14),transparent 50%)}
.fs-cta>*{position:relative;z-index:1}
.fs-cta .fs-eyebrow{color:var(--yellow)}
.fs-cta-grid{display:grid;grid-template-columns:minmax(0,1.02fr) minmax(360px,.86fr);gap:32px;align-items:start}
.fs-cta h2{color:#fff;font-size:clamp(28px,3.2vw,44px);line-height:1.08;font-weight:800}
.fs-cta h2 .ac{color:var(--yellow)}
.fs-cta-grid>div>p{color:#C7DAFF;margin-top:16px;font-size:16px;line-height:1.6;max-width:50ch}
.fs-page .fs-ctalist{margin-top:26px;display:flex;flex-direction:column;gap:13px}
.fs-ctalist li{display:flex;gap:12px;align-items:center;color:#DCE9FF;font-size:14.5px;line-height:1.5}
.fs-tick{width:34px;height:34px;border-radius:10px;flex:none;display:grid;place-items:center;
  background:rgba(251,191,36,.16);border:1px solid rgba(251,191,36,.38);color:var(--yellow)}
.fs-form{background:rgba(255,255,255,.97);border:1px solid rgba(255,255,255,.4);border-radius:20px;
  padding:26px;box-shadow:0 30px 74px rgba(3,18,60,.36)}
.fs-form h3{font-size:19px;font-weight:800}
.fs-form>p{margin-top:7px;font-size:13.5px;line-height:1.5;color:var(--muted)}
.fs-fields{margin-top:20px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}
.fs-f{display:flex;flex-direction:column;gap:6px;min-width:0}
.fs-f--full{grid-column:1/-1}
.fs-f label{font:800 10.5px/1.2 var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--deep)}
.fs-f input,.fs-f select,.fs-f textarea{font:600 14px/1.4 var(--sans);color:var(--ink);background:var(--paleblue);
  border:1px solid var(--line);border-radius:12px;padding:12px 13px;min-height:46px;width:100%;
  transition:border-color .16s ease,box-shadow .16s ease}
.fs-f textarea{min-height:78px;resize:vertical}
.fs-f input:focus,.fs-f select:focus,.fs-f textarea:focus{outline:0;border-color:var(--blue);box-shadow:0 0 0 3px rgba(37,99,235,.17);background:#fff}
.fs-choice{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}
.fs-choice label{position:relative;display:flex;flex-direction:column;gap:4px;cursor:pointer;padding:12px;border-radius:12px;
  border:1px solid var(--line);background:var(--paleblue);font:800 12.5px/1.25 var(--sans);color:var(--ink);
  letter-spacing:0;text-transform:none;transition:border-color .16s ease,background .16s ease}
.fs-choice-t{display:flex;align-items:center;gap:7px;padding-right:18px}
.fs-choice-t .lu{color:var(--blue)}
.fs-choice label small{font:600 11px/1.3 var(--sans);color:var(--muted)}
.fs-choice input{position:absolute;opacity:0;width:0;height:0}
.fs-choice label:has(input:checked){border-color:var(--blue);background:#fff;color:var(--deep);box-shadow:0 0 0 2px rgba(37,99,235,.18)}
.fs-choice label:has(input:focus-visible){outline:3px solid var(--blue);outline-offset:2px}
.fs-choice label::after{content:"";position:absolute;top:10px;right:10px;width:16px;height:16px;
  border-radius:50%;border:1.5px solid var(--line3);background:#fff;transition:all .18s ease}
.fs-choice label:has(input:checked)::after{background:var(--blue);border-color:var(--blue);box-shadow:inset 0 0 0 3px #fff}
.fs-form .fs-btn{width:100%;margin-top:18px}
.fs-page .fs-fineprint{margin-top:13px;display:flex;align-items:center;justify-content:center;gap:6px;
  font:600 11.5px/1.5 var(--sans);color:var(--muted);text-align:center}
.fs-formmsg{margin-top:14px;border-radius:12px;padding:14px 16px;font:700 13.5px/1.5 var(--sans);display:none}
.fs-formmsg.on{display:block}
.fs-formmsg.ok{background:rgba(37,99,235,.07);border:1px solid var(--line3);color:var(--deep)}
.fs-formmsg.err{background:rgba(251,191,36,.14);border:1px solid rgba(251,191,36,.42);color:var(--amber)}
.fs-f input:invalid.fs-touched,.fs-f select:invalid.fs-touched,.fs-f textarea:invalid.fs-touched{border-color:#DC5A4A;background:#FFF6F5}
.fs-f-err{display:none;margin-top:5px;font:700 11.5px/1.3 var(--sans);color:#B4392B}
.fs-f input:invalid.fs-touched + .fs-f-err,.fs-f select:invalid.fs-touched + .fs-f-err,.fs-f textarea:invalid.fs-touched + .fs-f-err{display:block}
.fs-btn[data-busy="true"]{pointer-events:none;opacity:.86}
.fs-btn-spin{display:none;width:15px;height:15px;border-radius:50%;flex:none;
  border:2px solid rgba(255,255,255,.4);border-top-color:#fff;animation:fsSpin .7s linear infinite}
.fs-btn[data-busy="true"] .fs-btn-spin{display:inline-block}
.fs-btn[data-busy="true"] svg{display:none}

/* ── 5. Visual components ───────────────────────────────────────────────── */
/* run console (hero) */
.fs-run{background:#fff;border:1px solid var(--line3);border-radius:22px;box-shadow:var(--sh3);overflow:hidden}
.fs-run-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 20px;
  border-bottom:1px solid var(--line);background:var(--lightblue)}
.fs-run-top strong{display:inline-flex;align-items:center;gap:8px;font:800 14px/1.2 var(--disp);color:var(--ink)}
.fs-run-top strong .lu{color:var(--blue)}
.fs-live{display:inline-flex;align-items:center;gap:8px;font:700 12.5px/1 var(--sans);color:var(--muted);white-space:nowrap}
.fs-live::before{content:"";width:8px;height:8px;border-radius:50%;background:var(--ok);box-shadow:0 0 0 4px var(--ok-soft)}
.fs-live--gate::before{background:var(--yellow);box-shadow:0 0 0 4px var(--gate-soft)}
.fs-run-body{padding:18px 20px}
.fs-brief{display:flex;gap:12px;align-items:flex-start;background:var(--lightblue);border:1px solid var(--line);
  border-radius:14px;padding:13px 15px;margin-bottom:14px}
.fs-brief-av{flex:none;width:34px;height:34px;border-radius:50%;display:grid;place-items:center;background:var(--alert-soft);color:var(--alert)}
.fs-brief p{font:600 14.5px/1.5 var(--sans);color:var(--ink);min-height:3em}
.fs-brief-who{display:block;font:800 10.5px/1.3 var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:3px}
.fs-caret{display:none;width:2px;height:1em;background:var(--blue);vertical-align:-2px;margin-left:1px;animation:fsBlink 1s steps(1) infinite}
.fs-run.is-typing .fs-caret{display:inline-block}
.fs-agents{display:grid;gap:5px}
.fs-agents li{display:grid;grid-template-columns:36px minmax(0,1fr) auto;align-items:center;gap:12px;
  padding:8px 10px;border-radius:11px;border:1px solid transparent;transition:background .3s,border-color .3s}
.fs-agent-ic{width:36px;height:36px;border-radius:10px;display:grid;place-items:center;background:var(--lightblue);
  color:var(--muted);transition:background .3s,color .3s}
.fs-agents b{display:block;font:800 13.5px/1.25 var(--sans);color:var(--ink)}
.fs-agents small{display:block;font:600 12px/1.35 var(--sans);color:var(--muted)}
.fs-agent-st{font:700 12px/1 var(--sans);color:var(--muted);white-space:nowrap}
.fs-agent-st>span{display:none;align-items:center;gap:6px}
.fs-agents .is-queued .st-q,.fs-agents .is-running .st-r,.fs-agents .is-done .st-d,.fs-agents .is-gate .st-g{display:inline-flex}
.fs-agents .is-queued{opacity:.6}
.fs-agents .is-running{background:var(--lightblue);border-color:var(--line)}
.fs-agents .is-running .fs-agent-ic{background:var(--blue);color:#fff}
.fs-agents .is-done .fs-agent-ic{background:var(--ok-soft);color:var(--ok)}
.fs-agents .is-done .fs-agent-st{color:var(--ok)}
.fs-agents .is-gate{background:var(--gate-soft);border-color:rgba(251,191,36,.5)}
.fs-agents .is-gate .fs-agent-ic{background:var(--yellow);color:#3D2B00}
.fs-agents .is-gate .fs-agent-st{color:var(--gate)}
.fs-spin{animation:fsSpin 1s linear infinite}
.fs-run-foot{display:flex;align-items:center;gap:16px;padding:13px 20px;border-top:1px solid var(--line);
  font:700 12.5px/1.3 var(--sans);color:var(--muted)}
.fs-run-bar{flex:1;min-width:80px;height:6px;background:var(--paleblue);border-radius:99px;overflow:hidden}
.fs-run-bar span{display:block;height:100%;background:linear-gradient(90deg,var(--blue),var(--yellow));border-radius:99px;transition:width .5s ease}

/* at-a-glance tiles (use-case hero) */
.fs-glance{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
.fs-glance li{display:flex;gap:12px;align-items:flex-start;background:#fff;border:1px solid var(--line);
  border-radius:14px;padding:16px;box-shadow:var(--sh1);min-width:0}
.fs-glance .fs-ibox{width:38px;height:38px;border-radius:11px}
.fs-glance b{display:block;font:800 10px/1.2 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.fs-glance span{display:block;margin-top:5px;font:700 13.5px/1.38 var(--sans);color:var(--ink)}

/* library filters + cards */
.fs-filters{display:flex;flex-wrap:wrap;gap:8px;margin-top:30px}
.fs-filters button{font:700 13.5px/1 var(--sans);padding:10px 15px;border-radius:999px;border:1.5px solid var(--line3);
  background:#fff;color:var(--ink);cursor:pointer;display:inline-flex;align-items:center;gap:8px;transition:all .2s}
.fs-filters button .lu{color:var(--blue)}
.fs-filters button:hover{border-color:var(--blue)}
.fs-filters button[aria-pressed="true"]{background:var(--deep);border-color:var(--deep);color:#fff}
.fs-filters button[aria-pressed="true"] .lu{color:var(--yellow)}
.fs-filters .n{font:700 11px/1 var(--mono);opacity:.65}
.fs-ucgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px;margin-top:24px}
.fs-uc{display:flex;flex-direction:column;background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:22px;box-shadow:var(--sh1);min-width:0;transition:transform .2s,box-shadow .2s,border-color .2s}
.fs-page a.fs-uc{color:inherit}
.fs-uc[hidden]{display:none}
.fs-uc:hover{transform:translateY(-3px);box-shadow:var(--sh2);border-color:var(--line3)}
.fs-uc-top{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-bottom:16px}
.fs-uc-id{font:800 10.5px/1.2 var(--mono);color:var(--muted);letter-spacing:.04em;text-align:right}
.fs-uc h3{font-size:17.5px;font-weight:800;line-height:1.22}
.fs-uc p{margin:7px 0 16px;font-size:14px;line-height:1.5;color:var(--body)}
.fs-uc-out{display:flex;flex-wrap:wrap;gap:6px;margin-top:auto;padding-top:14px;border-top:1px dashed var(--line3)}
.fs-uc-out span{display:inline-flex;align-items:center;gap:5px;font:700 11.5px/1.2 var(--sans);color:var(--deep);
  background:var(--paleblue);padding:5px 9px;border-radius:7px}
.fs-uc-out .lu{color:var(--blue)}
.fs-uc-go{margin-top:14px;display:inline-flex;align-items:center;gap:6px;font:800 13px/1 var(--sans);color:var(--blue)}

/* diagrams */
.fs-page .fs-diagram{margin-top:36px}
.fs-diagram{background:#fff;border:1px solid var(--line);border-radius:22px;padding:24px;box-shadow:var(--sh1)}
.fs-diagram-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;border-radius:12px}
.fs-swipe{display:none;align-items:center;gap:7px;margin-bottom:12px;font:700 12px/1.3 var(--sans);color:var(--muted)}
.fs-swipe .lu{color:var(--blue)}
@media (max-width:800px){.fs-swipe{display:flex}}
.fs-diagram-scroll svg{display:block;width:100%;height:auto;min-width:760px}
.fs-legend{display:flex;flex-wrap:wrap;gap:10px 24px;margin-top:16px;padding-top:16px;border-top:1px solid var(--sec);
  font:600 13px/1.3 var(--sans);color:var(--muted)}
.fs-legend span{display:inline-flex;align-items:center;gap:8px}
.fs-legend .lu{color:var(--blue)}
.dg-bound{fill:#F7FAFF;stroke:var(--blue);stroke-width:1.5}
.dg-title{font-family:var(--disp);font-size:16px;font-weight:800;fill:var(--ink)}
.dg-stereo{font-family:var(--sans);font-size:12px;font-style:italic;font-weight:600;fill:var(--muted)}
.dg-stereo--r{fill:var(--alert)}
.dg-uc{fill:#fff;stroke:var(--blue);stroke-width:1.5}
.dg-uc--auto{fill:#EEF5FF}
.dg-uc--gate{fill:#FFF6D9;stroke:#D89B00}
.dg-t{font-family:var(--sans);font-size:13.5px;font-weight:700;fill:var(--ink)}
.dg-t--sm{font-size:13px}
.dg-n{font-family:var(--mono);font-size:11.5px;fill:var(--blue)}
.dg-label{font-family:var(--sans);font-size:14px;font-weight:800;fill:var(--ink)}
.dg-actor{stroke:var(--ink);stroke-width:2;fill:none;stroke-linecap:round}
.dg-actor--gate{stroke:#B77F00}
.dg-assoc{stroke:#8EA2CC;stroke-width:1.5}
.dg-assoc--gate{stroke:#D89B00}
.dg-seq{stroke:var(--blue);stroke-width:1.5;stroke-dasharray:5 4;fill:none}
.dg-dep{stroke:var(--alert);stroke-width:1.5;stroke-dasharray:6 5;fill:none}
.dg-sys{fill:var(--alert-soft);stroke:var(--alert);stroke-width:1.5}
.dg-gateband{fill:#FFF6D9;stroke:#D89B00;stroke-width:1.2}
.dg-link{cursor:pointer}
.dg-link:hover .dg-uc,.dg-link:focus .dg-uc{fill:#DBEAFE;stroke-width:2.2}
.dg-link:focus{outline:none}

/* in → workflow → out */
.fs-io{display:grid;grid-template-columns:minmax(0,1fr) 64px minmax(0,1.1fr) 64px minmax(0,1fr);align-items:center;margin-top:40px}
.fs-io-col{display:grid;gap:10px}
.fs-io-h{display:inline-flex;align-items:center;gap:7px;font:800 11px/1 var(--sans);letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);margin-bottom:2px}
.fs-io-item{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:13px;
  padding:11px 13px;font:700 14px/1.3 var(--sans);color:var(--ink);box-shadow:var(--sh1)}
.fs-io-item .fs-ibox{width:36px;height:36px;border-radius:10px}
.fs-io-col--out .fs-ibox{background:var(--ok-soft);color:var(--ok)}
.fs-io-arrow{position:relative;height:2px;margin:0 8px;background:repeating-linear-gradient(90deg,var(--blue) 0 8px,transparent 8px 14px);
  background-size:14px 2px}
.fs-io-arrow::after{content:"";position:absolute;right:-3px;top:-5px;border-left:8px solid var(--blue);
  border-top:6px solid transparent;border-bottom:6px solid transparent}
.fs-io-core{position:relative;text-align:center;background:linear-gradient(150deg,var(--deep),#0E2C7E);color:#fff;
  border-radius:22px;padding:28px 20px;box-shadow:var(--sh3);overflow:hidden}
.fs-io-core::before{content:"";position:absolute;inset:-45%;
  background:conic-gradient(from 0deg,transparent 0 70%,rgba(251,191,36,.22) 85%,transparent 100%)}
.fs-io-core>*{position:relative}
.fs-io-core-ic{width:62px;height:62px;border-radius:18px;margin:0 auto 12px;display:grid;place-items:center;
  background:rgba(255,255,255,.12);border:1px solid rgba(255,255,255,.22);color:var(--yellow)}
.fs-io-core b{display:block;font:800 17px/1.25 var(--disp)}
.fs-io-core small{display:block;margin-top:4px;font:600 12px/1.3 var(--sans);color:#BFD4FF}
.fs-io-steps{display:flex;justify-content:center;gap:6px;margin-top:16px;flex-wrap:wrap}
.fs-io-steps span{width:34px;height:34px;border-radius:10px;display:grid;place-items:center;
  background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.16);color:#DBEAFE}
.fs-io-steps span:last-child{background:var(--yellow);border-color:var(--yellow);color:#3D2B00}
.fs-io-gate{display:inline-flex;align-items:center;gap:6px;margin-top:14px;font:800 11px/1 var(--sans);
  letter-spacing:.08em;text-transform:uppercase;color:var(--yellow)}

/* flowchart */
.fs-flowwrap{display:grid;grid-template-columns:minmax(0,1.5fr) minmax(280px,.85fr);gap:32px;align-items:start;margin-top:36px}
.fs-flow>li{display:grid;grid-template-columns:58px minmax(0,1fr);gap:18px;position:relative;padding-bottom:24px}
.fs-flow>li:not(:last-child)::before{content:"";position:absolute;left:28px;top:60px;bottom:2px;width:2px;
  background:repeating-linear-gradient(180deg,var(--line3) 0 6px,transparent 6px 11px);background-size:2px 11px}
.fs-flow-dot{width:58px;height:58px;border-radius:16px;display:grid;place-items:center;position:relative;z-index:1;
  background:#fff;border:1.5px solid var(--line3);color:var(--blue);box-shadow:var(--sh1)}
.fs-flow-dot b{position:absolute;top:-7px;right:-7px;z-index:2;min-width:22px;height:22px;padding:0 5px;border-radius:11px;
  background:var(--blue);color:#fff;font:800 10.5px/22px var(--mono);text-align:center}
.fs-flow .is-start .fs-flow-dot{background:var(--alert-soft);border-color:#F6C4BD;color:var(--alert)}
.fs-flow .is-gate .fs-flow-dot{background:var(--gate-soft);border-color:rgba(251,191,36,.6);color:var(--gate)}
.fs-flow .is-gate .fs-flow-dot b{background:var(--yellow);color:#3D2B00}
.fs-flow .is-end .fs-flow-dot{background:var(--ok-soft);border-color:#B8E6D4;color:var(--ok)}
.fs-flow .is-decision .fs-flow-dot{background:transparent;border:0;box-shadow:none}
.fs-flow .is-decision .fs-flow-dot::before{content:"";position:absolute;inset:8px;transform:rotate(45deg);
  border:2px solid var(--blue);border-radius:8px;background:#fff;box-shadow:var(--sh1)}
.fs-flow .is-decision.is-gate .fs-flow-dot::before{border-color:var(--yellow2);background:var(--gate-soft)}
.fs-flow .is-decision .fs-flow-dot .lu{position:relative}
.fs-flow-body{padding-top:3px;min-width:0}
.fs-flow-who{display:inline-flex;align-items:center;gap:6px;font:800 10.5px/1.2 var(--sans);letter-spacing:.1em;
  text-transform:uppercase;color:var(--muted);margin-bottom:5px}
.fs-flow-who.is-auto{color:var(--blue)}
.fs-flow-who.is-ok{color:var(--ok)}
.fs-flow .is-gate .fs-flow-who{color:var(--gate)}
.fs-flow-body h3{font-size:17px;font-weight:800;line-height:1.25}
.fs-flow-body p{margin-top:4px;font-size:14.5px;line-height:1.55;color:var(--body)}
.fs-page .fs-flow-q{margin-top:12px;display:flex;gap:8px;align-items:center;font:800 14px/1.4 var(--disp);color:var(--deep)}
.fs-branch{display:flex;flex-wrap:wrap;gap:8px;margin-top:9px}
.fs-branch span{display:inline-flex;align-items:center;gap:7px;font:600 13px/1.35 var(--sans);padding:7px 11px;border-radius:9px;border:1px solid}
.fs-branch .yes{background:var(--ok-soft);border-color:#B8E6D4;color:#0E6B4C}
.fs-branch .no{background:var(--alert-soft);border-color:#F6C4BD;color:#A8342A}
.fs-branch b{font-weight:800}
.fs-side{position:sticky;top:104px;display:grid;gap:14px}
.fs-sidecard{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--sh1)}
.fs-sidecard h4{display:flex;align-items:center;gap:8px;font:800 11px/1.2 var(--sans);letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);margin-bottom:12px}
.fs-sidecard--demo{background:linear-gradient(135deg,#FFFBEB,#FFF6D9);border-color:rgba(251,191,36,.4)}
.fs-sidecard--demo h4{color:var(--gate)}
.fs-sidecard--demo p{font:600 14px/1.5 var(--sans);color:#5C4200}
.fs-outlist{display:grid;gap:9px}
.fs-outlist li{display:flex;align-items:center;gap:10px;font:700 14px/1.3 var(--sans);color:var(--ink)}
.fs-outlist .lu{color:var(--ok)}

/* tabs */
.fs-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-top:30px}
.fs-tabs button{font:800 14px/1.2 var(--sans);padding:12px 16px;border-radius:12px;border:1.5px solid var(--line3);
  background:#fff;color:var(--ink);cursor:pointer;display:inline-flex;align-items:center;gap:10px;transition:all .2s}
.fs-tabs button .lu{color:var(--blue)}
.fs-tabs button:hover{border-color:var(--blue)}
.fs-tabs button[aria-selected="true"]{border-color:var(--blue);box-shadow:inset 0 0 0 1px var(--blue),var(--sh1);color:var(--deep)}
.fs-tabpanel{margin-top:16px;background:#fff;border:1px solid var(--line);border-radius:22px;padding:28px;box-shadow:var(--sh1)}
.fs-tabpanel[hidden]{display:none}
.fs-tabpanel-head{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:26px;margin-bottom:26px;
  padding-bottom:22px;border-bottom:1px solid var(--sec)}
.fs-tabpanel-head h3{display:flex;align-items:center;gap:12px;font-size:22px;font-weight:800}
.fs-tabpanel-head p{margin-top:10px;color:var(--body);font-size:15px}
.fs-tabpanel-foot{display:flex;flex-wrap:wrap;gap:14px;align-items:center;justify-content:space-between;padding-top:20px;border-top:1px solid var(--sec)}

/* before / after */
.fs-cmp{margin-top:34px;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:#fff;box-shadow:var(--sh1)}
.fs-cmp-row{display:grid;grid-template-columns:minmax(0,.85fr) minmax(0,1fr) minmax(0,1.1fr);border-top:1px solid var(--sec)}
.fs-cmp-row:first-child{border-top:0;background:var(--lightblue)}
.fs-cmp-row>div{padding:17px 20px;font-size:14.5px;line-height:1.45;display:flex;gap:10px;align-items:flex-start;min-width:0}
.fs-cmp-row>div+div{border-left:1px solid var(--sec)}
.fs-cmp-row:first-child>div{font:800 11px/1.2 var(--sans);letter-spacing:.12em;text-transform:uppercase;color:var(--muted);align-items:center}
.fs-cmp-row:first-child .fs-cmp-new{color:var(--ok)}
.fs-cmp-task{font-weight:800;color:var(--ink)}
.fs-cmp-task .lu{color:var(--blue)}
.fs-cmp-old{color:var(--muted)}
.fs-cmp-old .lu{color:#C4CBD8;margin-top:2px}
.fs-cmp-new{color:var(--ink);font-weight:600}
.fs-cmp-new .lu{color:var(--ok);margin-top:2px}

/* icon pipeline */
.fs-pipe{display:grid;grid-template-columns:repeat(var(--n),minmax(0,1fr));position:relative}
.fs-page .fs-pipe{margin-top:48px}
.fs-pipe::before{content:"";position:absolute;left:calc(50% / var(--n));right:calc(50% / var(--n));top:31px;height:2px;
  background:repeating-linear-gradient(90deg,var(--line3) 0 8px,transparent 8px 14px);background-size:14px 2px}
.fs-pipe>li{position:relative;padding:0 10px;text-align:center}
.fs-pipe-node{position:relative;z-index:1;width:64px;height:64px;margin:0 auto 16px;border-radius:18px;display:grid;
  place-items:center;background:#fff;border:1.5px solid var(--line3);color:var(--blue);box-shadow:var(--sh1);transition:transform .3s}
.fs-pipe-num{position:absolute;top:-8px;right:-8px;min-width:24px;height:24px;padding:0 4px;border-radius:12px;
  background:var(--blue);color:#fff;font:800 10.5px/24px var(--mono);text-align:center}
.fs-pipe-num:empty{display:none}
.fs-pipe>li:last-child .fs-pipe-node{background:linear-gradient(135deg,var(--blue),var(--deep));border-color:var(--blue);color:#fff}
.fs-pipe h3{font-size:15px;font-weight:800;line-height:1.25}
.fs-pipe p{margin-top:6px;font-size:13px;line-height:1.45;color:var(--body)}
.fs-pipe-tag{display:inline-flex;align-items:center;gap:5px;margin-top:10px;font:800 10.5px/1 var(--sans);
  letter-spacing:.08em;text-transform:uppercase;padding:5px 9px;border-radius:6px;background:rgba(251,191,36,.16);color:var(--gate)}
.fs-pipe--time .fs-pipe-tag{font-family:var(--mono);letter-spacing:.02em;background:var(--paleblue);color:var(--deep)}
.fs-dark .fs-pipe::before{background:repeating-linear-gradient(90deg,rgba(191,212,255,.5) 0 8px,transparent 8px 14px);background-size:14px 2px}
.fs-dark .fs-pipe-node{background:rgba(255,255,255,.08);border-color:rgba(255,255,255,.22);color:#fff;box-shadow:none}
.fs-dark .fs-pipe>li:last-child .fs-pipe-node{background:var(--yellow);border-color:var(--yellow);color:#3D2B00}
.fs-dark .fs-pipe-num{background:var(--yellow);color:#3D2B00}
.fs-dark .fs-pipe p{color:#BFD4FF}
.fs-dark .fs-pipe-tag{background:rgba(229,72,58,.22);color:#FFD7D2}

/* limits (dark) */
.fs-limits{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:36px}
.fs-limit{background:rgba(255,255,255,.06);border:1px solid rgba(255,255,255,.14);border-radius:16px;padding:22px;
  backdrop-filter:blur(10px);transition:transform .3s ease,background .3s ease}
.fs-limit .fs-ibox{position:relative;margin-bottom:14px;background:rgba(251,191,36,.14);color:var(--yellow);border:1px solid rgba(251,191,36,.3)}
.fs-limit .fs-ibox::after{content:"";position:absolute;right:-6px;bottom:-6px;width:18px;height:18px;border-radius:50%;
  border:2px solid #123FA9;background:var(--alert) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='4' stroke-linecap='round'%3E%3Cpath d='M18 6 6 18M6 6l12 12'/%3E%3C/svg%3E") center/9px no-repeat}
.fs-limit h3{font-size:16px;font-weight:800;line-height:1.25}
.fs-limit p{margin-top:7px;font-size:13.5px;line-height:1.5;color:#C9DAFF}
.fs-limit--own{background:rgba(251,191,36,.12);border-color:rgba(251,191,36,.4)}
.fs-limit:last-child:nth-child(3n+2){grid-column:span 2}
@media (max-width:980px){
  .fs-limit:last-child:nth-child(3n+2){grid-column:auto}
  .fs-limit:last-child:nth-child(odd){grid-column:span 2}
}
@media (max-width:640px){
  .fs-limit:last-child:nth-child(odd){grid-column:auto}
}
.fs-claim{display:grid;grid-template-columns:auto auto minmax(0,1fr);gap:32px;align-items:center;margin-top:14px;
  padding:26px 28px;border-radius:18px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16)}
.fs-claim-num b{display:block;font:900 clamp(34px,4vw,50px)/1 var(--disp);color:var(--yellow)}
.fs-claim-num span{display:block;margin-top:7px;font:800 11px/1.3 var(--sans);color:#BFD4FF;letter-spacing:.08em;text-transform:uppercase}
.fs-claim p{font-size:14px;line-height:1.55;color:#DCE9FF}
.fs-claim p b{color:#fff}

/* trust */
.fs-trust{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:22px;margin-top:36px}
.fs-trust>div{padding-top:22px;border-top:2px solid var(--ink)}
.fs-trust .fs-ibox{margin-bottom:14px}
.fs-trust h3{font-size:16.5px;font-weight:800}
.fs-trust p{margin-top:6px;font-size:14px;color:var(--body);line-height:1.5}

/* markets */
.fs-mkts{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;margin-top:36px}
.fs-mkt{background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px;box-shadow:var(--sh1);transition:transform .25s,box-shadow .25s}
.fs-mkt h3{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:800;margin-bottom:14px}
.fs-mkt h3 .lu{color:var(--alert)}
.fs-mkt dl{display:grid;gap:11px;margin:0}
.fs-mkt dt{display:flex;align-items:center;gap:6px;font:800 10px/1.2 var(--sans);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.fs-mkt dt .lu{color:var(--blue)}
.fs-mkt dd{margin:4px 0 0;font:700 13.5px/1.35 var(--sans);color:var(--ink)}

/* ── 6. Responsive ──────────────────────────────────────────────────────── */
@media (max-width:1180px){
  .fs-mkts{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:1080px){
  .fs-life{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fs-cta-grid,.fs-hero-grid,.fs-hero-grid--run{grid-template-columns:minmax(0,1fr);gap:34px}
  .fs-hero .fs-portrait{max-width:420px;margin-inline:auto}
  .fs-glance,.fs-trust{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fs-flowwrap{grid-template-columns:minmax(0,1fr)}
  .fs-side{position:static;grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}
}
@media (max-width:980px){
  .fs-pipe{grid-template-columns:minmax(0,1fr);gap:18px}
  .fs-pipe::before{left:31px;right:auto;top:10px;bottom:10px;width:2px;height:auto;
    background:repeating-linear-gradient(180deg,var(--line3) 0 8px,transparent 8px 14px);background-size:2px 14px}
  .fs-dark .fs-pipe::before{background:repeating-linear-gradient(180deg,rgba(191,212,255,.5) 0 8px,transparent 8px 14px);background-size:2px 14px}
  .fs-pipe>li{display:grid;grid-template-columns:64px minmax(0,1fr);gap:16px;text-align:left;padding:0;align-items:start}
  .fs-pipe-node{margin:0}
  .fs-ucgrid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fs-io{grid-template-columns:minmax(0,1fr)}
  .fs-io-arrow{width:2px;height:34px;margin:8px auto;
    background:repeating-linear-gradient(180deg,var(--blue) 0 8px,transparent 8px 14px);background-size:2px 14px}
  .fs-io-arrow::after{right:auto;left:-5px;top:auto;bottom:-3px;border-left:6px solid transparent;
    border-right:6px solid transparent;border-top:8px solid var(--blue);border-bottom:0}
  .fs-faqwrap{grid-template-columns:minmax(0,1fr);gap:26px}
  .fs-faqwrap .fs-head{position:static}
  .fs-limits{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fs-claim{grid-template-columns:1fr 1fr}
  .fs-claim p{grid-column:1/-1}
}
@media (max-width:860px){
  .fs-sect{padding-block:64px}
  .fs-hero{padding-block:48px 58px}
  .fs-expert{grid-template-columns:minmax(0,1fr);gap:24px;padding:26px}
  .fs-expert-img{max-width:270px;margin-inline:auto}
  .fs-foot-top{grid-template-columns:minmax(0,1fr);gap:28px}
  .fs-tabpanel-head{grid-template-columns:minmax(0,1fr);gap:16px}
  .fs-mkts{grid-template-columns:repeat(2,minmax(0,1fr))}
  .fs-hdr-in{position:relative}
  .fs-nav{display:none}
  .fs-nav.fs-nav--cta{display:flex}
  .fs-nav.fs-nav--cta a:not(.fs-btn){display:none}
}
@media (max-width:760px){
  .fs-cmp-row{grid-template-columns:minmax(0,1fr)}
  .fs-cmp-row>div+div{border-left:0;padding-top:0}
  .fs-cmp-row:first-child{display:none}
}
@media (max-width:640px){
  .fs-wrap{padding-inline:16px}
  .fs-hdr-in{padding-inline:16px;gap:14px}
  .fs-section-nav .fs-nav--cta{display:none}
  .fs-sect{padding-block:52px}
  .fs-hero{padding-block:38px 48px}
  .fs-dark,.fs-cta{padding-block:58px}
  .fs-g2,.fs-life,.fs-ucgrid,.fs-glance,.fs-trust,.fs-limits,.fs-mkts,.fs-fields,.fs-choice{grid-template-columns:minmax(0,1fr)}
  .fs-card,.fs-form,.fs-answer,.fs-tabpanel,.fs-diagram{padding:20px}
  .fs-faq summary{font-size:15px;padding:17px 46px 17px 18px}
  .fs-faq-a{padding:0 18px 18px}
  .fs-logo img{width:96px}
  .fs-logo span{display:none}
  .fs-hero::after{width:320px;right:-110px;top:-40px}
  .fs-foot-bot .r{margin-left:0}
  .fs-quote{padding:24px 20px 22px 60px}
  .fs-quote>.lu{left:18px;top:24px}
  .fs-claim{padding:22px 20px;gap:20px}
  .fs-agents small{display:none}
  .fs-run-body{padding:16px}
  .fs-flow>li{grid-template-columns:48px minmax(0,1fr);gap:14px}
  .fs-flow-dot{width:48px;height:48px;border-radius:14px}
  .fs-flow>li:not(:last-child)::before{left:23px;top:50px}
}
@media (max-width:380px){
  .fs-hero h1{font-size:30px}
  .fs-btn{padding:12px 16px;font-size:13.5px}
}

/* ── 7. Motion ──────────────────────────────────────────────────────────── */
@keyframes fsFadeUp{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:translateY(0)}}
@keyframes fsFloatSlow{0%,100%{transform:translate(0,0) rotate(0deg)}33%{transform:translate(8px,-16px) rotate(3deg)}66%{transform:translate(-10px,9px) rotate(-2.5deg)}}
@keyframes fsShine{0%{transform:translateX(-130%) skewX(-18deg)}100%{transform:translateX(260%) skewX(-18deg)}}
@keyframes fsGradientMove{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
@keyframes fsSpin{to{transform:rotate(360deg)}}
@keyframes fsBgDrift{from{background-position:0 0,14px 14px}to{background-position:56px 56px,70px 70px}}
@keyframes fsPop{0%{transform:scale(.86);opacity:0}70%{transform:scale(1.03)}100%{transform:scale(1);opacity:1}}
@keyframes fsBlink{50%{opacity:0}}
@keyframes fsFlowX{to{background-position:14px 0}}
@keyframes fsFlowY{to{background-position:0 14px}}
@keyframes fsFlowY11{to{background-position:0 11px}}
@keyframes fsDash{to{stroke-dashoffset:-18}}
@keyframes fsPulseOk{0%,100%{box-shadow:0 0 0 3px var(--ok-soft)}50%{box-shadow:0 0 0 7px rgba(20,150,107,.08)}}
@keyframes fsPulseGate{0%,100%{box-shadow:0 0 0 3px var(--gate-soft)}50%{box-shadow:0 0 0 7px rgba(251,191,36,.18)}}

.fs-reveal{opacity:0;transform:translateY(26px);
  transition:opacity .7s cubic-bezier(.16,1,.3,1),transform .7s cubic-bezier(.16,1,.3,1)}
.fs-reveal.fs-in{opacity:1;transform:none}

.fs-hero .fs-pill,.fs-hero .fs-crumb{animation:fsFadeUp .6s cubic-bezier(.16,1,.3,1) both}
.fs-hero h1{animation:fsFadeUp .7s .07s cubic-bezier(.16,1,.3,1) both}
.fs-hero .fs-lede{animation:fsFadeUp .7s .14s cubic-bezier(.16,1,.3,1) both}
.fs-hero .fs-btnrow{animation:fsFadeUp .7s .2s cubic-bezier(.16,1,.3,1) both}
.fs-hero .fs-proof{animation:fsFadeUp .7s .26s cubic-bezier(.16,1,.3,1) both}
.fs-hero-grid>div:last-child{animation:fsFadeUp .8s .16s cubic-bezier(.16,1,.3,1) both}

.fs-hero::before{animation:fsBgDrift 24s linear infinite}
.fs-hero::after{animation:fsSpin 100s linear infinite}
.fs-dark::before{animation:fsSpin 120s linear infinite reverse}
.fs-hero .ac{background:linear-gradient(100deg,var(--blue) 0%,var(--yellow) 50%,var(--blue) 100%);
  background-size:220% auto;-webkit-background-clip:text;background-clip:text;color:transparent;
  animation:fsGradientMove 7s ease-in-out infinite}

.fs-orb{position:absolute;border-radius:50%;filter:blur(44px);pointer-events:none;opacity:.4}
.fs-hero .fs-orb,.fs-dark .fs-orb,.fs-cta .fs-orb{position:absolute;z-index:0}
.fs-orb--blue{background:radial-gradient(circle,var(--blue),transparent 70%)}
.fs-orb--yellow{background:radial-gradient(circle,var(--yellow),transparent 70%);opacity:.32}
.fs-orb--1{width:260px;height:260px;top:-70px;right:6%;animation:fsFloatSlow 13s ease-in-out infinite}
.fs-orb--2{width:190px;height:190px;bottom:-60px;left:4%;animation:fsFloatSlow 16s ease-in-out infinite reverse}

/* flowing connectors: the "data moving through the workflow" cue */
.fs-io-arrow{animation:fsFlowX .9s linear infinite}
.fs-pipe::before{animation:fsFlowX 1.1s linear infinite}
.fs-flow>li:not(:last-child)::before{animation:fsFlowY11 1s linear infinite}
.dg-seq{animation:fsDash 1.2s linear infinite}
.fs-io-core::before{animation:fsSpin 9s linear infinite}
.fs-life-bar{background-size:200% 100%;animation:fsGradientMove 6s linear infinite}
.fs-live::before{animation:fsPulseOk 2s ease-in-out infinite}
.fs-live--gate::before{animation-name:fsPulseGate}
.fs-agents .is-gate .fs-agent-ic{animation:fsPulseGate 2s ease-in-out infinite}
.fs-portrait::before{animation:fsFloatSlow 9s ease-in-out infinite}
.fs-expert-img::before{animation:fsFloatSlow 10s ease-in-out infinite reverse}
.fs-faq details[open] .fs-faq-a{animation:fsFadeUp .35s cubic-bezier(.16,1,.3,1) both}
.fs-kv.fs-in dd,.fs-claim.fs-in .fs-claim-num b{animation:fsPop .5s cubic-bezier(.34,1.56,.64,1) both}

/* micro-interactions */
.fs-logo{transition:transform .25s ease}
.fs-logo:hover{transform:translateY(-1px) scale(1.02)}
.fs-nav a:not(.fs-btn){position:relative}
.fs-nav a:not(.fs-btn)::after{content:"";position:absolute;left:12px;right:12px;bottom:5px;height:2px;
  border-radius:2px;background:var(--blue);transform:scaleX(0);transform-origin:left;transition:transform .25s ease}
.fs-nav a:not(.fs-btn):hover::after,.fs-nav a[aria-current]::after{transform:scaleX(1)}
.fs-btn{position:relative;overflow:hidden}
.fs-btn::after{content:"";position:absolute;top:0;left:0;width:34%;height:100%;pointer-events:none;
  background:linear-gradient(120deg,transparent,rgba(255,255,255,.5),transparent);transform:translateX(-130%) skewX(-18deg)}
.fs-btn:hover::after{animation:fsShine .85s ease}
.fs-btn .lu,.fs-uc-go .lu{transition:transform .25s ease}
.fs-btn:hover .lu:last-child,.fs-uc:hover .fs-uc-go .lu{transform:translateX(3px)}
.fs-ibox{transition:transform .35s cubic-bezier(.34,1.56,.64,1)}
.fs-uc:hover .fs-ibox,.fs-card:hover .fs-ibox,.fs-trust>div:hover .fs-ibox,.fs-io-item:hover .fs-ibox{transform:scale(1.1) rotate(-6deg)}
.fs-pipe>li:hover .fs-pipe-node{transform:translateY(-4px)}
.fs-limit:hover{transform:translateY(-3px);background:rgba(255,255,255,.1)}
.fs-mkt:hover{transform:translateY(-3px);box-shadow:var(--sh2)}
.fs-flow>li:hover .fs-flow-dot{transform:scale(1.06)}
.fs-flow-dot{transition:transform .3s cubic-bezier(.34,1.56,.64,1)}

@media (max-width:980px){
  .fs-pipe::before,.fs-io-arrow{animation-name:fsFlowY}
}
@media (max-width:640px){
  .fs-orb--1{width:170px;height:170px}
  .fs-orb--2{width:130px;height:130px}
}

/* ── 8. UX utilities (elements injected by fire-safety.js) ──────────────── */
.fs-navtoggle{display:none;flex:none;width:42px;height:42px;margin-left:auto;
  align-items:center;justify-content:center;flex-direction:column;gap:5px;
  border-radius:10px;border:1px solid var(--line3);background:#fff;cursor:pointer;padding:0}
.fs-navtoggle-bar{display:block;width:18px;height:2px;border-radius:2px;background:var(--deep);
  transition:transform .28s cubic-bezier(.4,0,.2,1),opacity .2s ease}
.fs-navtoggle[aria-expanded="true"] .fs-navtoggle-bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.fs-navtoggle[aria-expanded="true"] .fs-navtoggle-bar:nth-child(2){opacity:0}
.fs-navtoggle[aria-expanded="true"] .fs-navtoggle-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.fs-mobiledrop{display:flex;position:absolute;top:100%;left:0;right:0;z-index:95;flex-direction:column;background:#fff;
  border-top:1px solid var(--sec);box-shadow:0 24px 54px rgba(15,23,42,.16);padding:0 22px;
  max-height:0;overflow:hidden;opacity:0;transition:max-height .32s ease,opacity .26s ease,padding .32s ease}
.fs-mobiledrop.fs-in{max-height:420px;opacity:1;padding:6px 22px 16px}
.fs-mobiledrop a{padding:14px 2px;border-bottom:1px solid var(--sec);font:700 15px/1.3 var(--sans);color:var(--body)}
.fs-mobiledrop a:last-child{border-bottom:0}
.fs-mobiledrop a[aria-current]{color:var(--deep)}
@media (max-width:860px){.fs-navtoggle{display:flex}}
@media (min-width:861px){.fs-mobiledrop{display:none}}

.fs-progress{position:fixed;top:0;left:0;height:3px;width:0%;z-index:110;
  background:linear-gradient(90deg,var(--blue),var(--yellow));box-shadow:0 0 10px rgba(37,99,235,.5);transition:width .12s linear}
.fs-totop{position:fixed;right:20px;bottom:20px;z-index:95;width:46px;height:46px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;border:0;cursor:pointer;
  background:linear-gradient(135deg,var(--blue),var(--deep));color:#fff;box-shadow:var(--shbtn);
  opacity:0;transform:translateY(12px) scale(.9);pointer-events:none;
  transition:opacity .25s ease,transform .25s ease,box-shadow .2s ease}
.fs-totop.fs-in{opacity:1;transform:translateY(0) scale(1);pointer-events:auto}
.fs-totop:hover{transform:translateY(-3px) scale(1.04);box-shadow:0 18px 34px rgba(37,99,235,.3)}
.fs-totop svg,.fs-copylink svg{stroke:currentColor;fill:none;stroke-linecap:round;stroke-linejoin:round}
.fs-totop svg{width:18px;height:18px;stroke-width:2.4}
.fs-copylink{display:inline-flex;align-items:center;gap:6px;margin-top:12px;padding:6px 10px;border-radius:8px;
  border:1px solid var(--line);background:#fff;color:var(--muted);font:700 12px/1.2 var(--sans);cursor:pointer;
  transition:color .2s ease,border-color .2s ease}
.fs-copylink:hover{color:var(--blue);border-color:var(--line3)}
.fs-copylink svg{width:13px;height:13px;stroke-width:2}
.fs-faq-a{display:flow-root}
.fs-faq-a .fs-copylink{display:flex;width:max-content}
.fs-toast{position:fixed;left:50%;bottom:30px;transform:translate(-50%,12px);z-index:120;
  background:var(--ink);color:#fff;font:700 13px/1.3 var(--sans);padding:10px 18px;border-radius:999px;
  box-shadow:0 16px 34px rgba(15,23,42,.3);opacity:0;pointer-events:none;transition:opacity .22s ease,transform .22s ease}
.fs-toast.fs-in{opacity:1;transform:translate(-50%,0)}
@media (max-width:640px){.fs-totop{right:14px;bottom:14px;width:42px;height:42px}}

@media (prefers-reduced-motion:reduce){
  .fs-page *,.fs-page *::before,.fs-page *::after{animation:none!important;transition:none!important}
  .fs-reveal{opacity:1!important;transform:none!important}
  .fs-hero .ac{-webkit-background-clip:initial;background-clip:initial;color:var(--blue)!important;background:none!important}
  .fs-orb{display:none}
  .fs-btn:hover,.fs-uc:hover,.fs-limit:hover,.fs-mkt:hover{transform:none}
  html{scroll-behavior:auto}
}
@media print{
  .fs-hdr,.fs-cta,.fs-foot,.fs-progress,.fs-totop,.fs-navtoggle,.fs-mobiledrop,.fs-toast{display:none!important}
  .fs-page{font-size:11pt}
  .fs-reveal{opacity:1!important;transform:none!important}
}