*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}

:root{
  --red:#C8102E;
  --red-dk:#A00C24;
  --red-soft:#FBE9EC;
  --navy:#0A2540;
  --ink:#12283f;
  --body:#334155;
  --muted:#64748b;
  --faint:#94a3b8;
  --off:#F8FAFB;
  --tint:#FDF4F5;
  --line:#e4e7ec;
  --hd:'Inter',system-ui,sans-serif;
  --bd:'Source Sans 3',system-ui,sans-serif;
  --max:1180px;
}

html{scroll-behavior:smooth}
body{font-family:var(--bd);font-size:16px;color:var(--body);background:#fff;line-height:1.7;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--red)}

.wrap{max-width:var(--max);margin:0 auto;padding:0 32px}

/* HEADER */
.site-header{position:sticky;top:0;z-index:100;background:#fff;border-bottom:1px solid var(--line);transition:box-shadow .25s}
.site-header.scrolled{box-shadow:0 1px 16px rgba(10,37,64,.09)}
.header-inner{max-width:var(--max);margin:0 auto;padding:0 32px;height:76px;display:flex;align-items:center;justify-content:space-between;gap:26px}
.brand{display:flex;align-items:center;flex-shrink:0}
.brand img{height:38px;width:auto;display:block}
.nav{display:flex;align-items:center;gap:30px}
.nav a{font-family:var(--hd);font-size:14px;font-weight:500;color:var(--ink);text-decoration:none;transition:color .15s;white-space:nowrap;position:relative;padding:4px 0}
.nav a::after{content:'';position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--red);transform:scaleX(0);transition:transform .18s}
.nav a:hover::after,.nav a.active::after{transform:scaleX(1)}
.nav a:hover,.nav a.active{color:var(--red)}
.nav-toggle{display:none;background:none;border:0;cursor:pointer;width:34px;height:34px;flex-direction:column;justify-content:center;gap:5px;padding:0}
.nav-toggle span{display:block;height:2px;width:22px;background:var(--navy);border-radius:2px;transition:transform .2s,opacity .2s}
.nav-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle.is-open span:nth-child(2){opacity:0}
.nav-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* HERO */
#hero{background:#fff url('https://ruuvfoofx7gkymaf.public.blob.vercel-storage.com/hero.webp') no-repeat right center;background-size:auto 108%;border-bottom:1px solid var(--line);padding:78px 0 82px;position:relative;overflow:hidden}
.hero-copy{max-width:620px;position:relative;z-index:2}
.hero-img-m{display:none}
.hero-tag{display:inline-flex;align-items:center;gap:9px;background:var(--red-soft);border:1px solid #F2CDD3;border-radius:100px;padding:6px 15px;font-family:var(--hd);font-size:11px;font-weight:600;color:var(--red);letter-spacing:.09em;text-transform:uppercase;margin-bottom:26px}
.hero-tag .dot{width:6px;height:6px;background:var(--red);border-radius:50%;flex-shrink:0}
#hero h1{font-family:var(--hd);font-size:clamp(31px,4.4vw,50px);font-weight:600;color:var(--navy);line-height:1.12;letter-spacing:-.026em;margin-bottom:20px}
#hero h1 em{font-style:normal;color:var(--red)}
.hero-sub{font-size:17px;color:var(--muted);line-height:1.75;max-width:540px}
.hero-actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:32px}
.btn{display:inline-block;font-family:var(--hd);font-size:14px;font-weight:500;padding:13px 27px;border-radius:6px;text-decoration:none;transition:all .15s}
.btn-primary{background:var(--red);color:#fff;border:1px solid var(--red)}
.btn-primary:hover{background:var(--red-dk);border-color:var(--red-dk)}
.btn-outline{background:#EEF2F7;color:var(--navy);border:1px solid #d3dce6}
.btn-outline:hover{background:#E1E8F0;border-color:var(--navy)}

/* IDE NOTICE */
.ide-notice{background:var(--tint);border:1px solid #F0CBD1;border-left:3px solid var(--red);border-radius:6px;padding:17px 21px;font-size:12.5px;line-height:1.75;color:#7a2733;margin-top:28px}
.ide-notice strong{font-weight:600;color:var(--red-dk)}
.ide-hero{max-width:600px;margin-top:34px}

/* SECTIONS */
.section{padding:86px 0}
.section-alt{background:var(--off);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.eyebrow{font-family:var(--hd);font-size:11px;font-weight:600;letter-spacing:.11em;text-transform:uppercase;color:var(--red);margin-bottom:13px}
.section h2{font-family:var(--hd);font-size:clamp(25px,3.5vw,34px);font-weight:600;color:var(--navy);letter-spacing:-.024em;line-height:1.2;margin-bottom:14px;max-width:860px}
.section h3.sub{font-family:var(--hd);font-size:19px;font-weight:600;color:var(--ink);margin-bottom:16px;letter-spacing:-.01em}
.lede{font-size:16.5px;color:var(--muted);line-height:1.78;max-width:740px;margin-bottom:42px}

/* SPLIT */
.split{display:grid;grid-template-columns:1fr 1fr;gap:52px;align-items:center}
.split-rev .split-media{order:2}
.split-copy p{font-size:16.5px;color:var(--body);line-height:1.85;margin-bottom:16px}
.split-media{border-radius:12px;overflow:hidden;border:1px solid var(--line);background:#fff;line-height:0}
.split-media img{display:block;width:100%}
.split-media.plain{border:none;background:transparent}

/* CARDS */
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.card{background:#fff;border:1px solid var(--line);border-radius:10px;padding:28px;border-top:3px solid var(--red)}
.card-num{font-family:var(--hd);font-size:12px;font-weight:700;color:var(--red);letter-spacing:.11em;margin-bottom:14px}
.card h3{font-family:var(--hd);font-size:16px;font-weight:600;color:var(--navy);line-height:1.35;margin-bottom:9px}
.card p{font-size:14.5px;color:var(--muted);line-height:1.7}

/* FIGURE */
.figure{margin-top:40px;border:1px solid var(--line);border-radius:12px;overflow:hidden;background:#fff;line-height:0;padding:28px}
.figure img{display:block;width:100%}

/* CITES */
.cites{background:#fff;border:1px solid var(--line);border-left:3px solid var(--red);border-radius:6px;padding:20px 24px;margin-top:26px}
.cites-label,.toc-label{font-family:var(--hd);font-size:10px;font-weight:600;letter-spacing:.11em;text-transform:uppercase;color:var(--faint);margin-bottom:12px}
.cites ul{list-style:none;display:flex;flex-direction:column;gap:7px}
.cites li{font-size:14px;color:#475569;line-height:1.5}

/* VIDEO */
.video-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-top:40px}
.video-wrap{border:1px solid var(--line);border-radius:12px;overflow:hidden;background:var(--navy);line-height:0}
.video-wrap video{display:block;width:100%;height:auto}

/* TABLE */
.table-wrap{overflow-x:auto;border:1px solid var(--line);border-radius:10px;margin-top:30px;background:#fff}
table.spec{width:100%;border-collapse:collapse;font-size:14.5px}
table.spec th{text-align:left;font-family:var(--hd);font-size:11px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:#fff;background:var(--navy);padding:14px 20px}
table.spec td{padding:15px 20px;border-bottom:1px solid #eef0f3;color:var(--body);line-height:1.6;vertical-align:top}
table.spec tbody tr:last-child td{border-bottom:none}
table.spec td:first-child{font-family:var(--hd);font-weight:600;color:var(--navy)}

/* LOGO GRID */
.logo-grid{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:12px;margin-top:40px}
.logo-item{background:#fff;border:1px solid var(--line);border-radius:10px;height:124px;display:flex;align-items:center;justify-content:center;padding:22px;transition:border-color .18s,transform .18s,box-shadow .18s}
.logo-item:hover{border-color:#e8c3ca;transform:translateY(-2px);box-shadow:0 6px 18px rgba(10,37,64,.07)}
.logo-item img{max-width:100%;max-height:100%;object-fit:contain;filter:grayscale(100%);opacity:.62;transition:filter .22s,opacity .22s}
.logo-item:hover img{filter:grayscale(0);opacity:1}

/* FOOTER */
.site-footer{background:var(--navy);padding:60px 0 26px;color:rgba(255,255,255,.6);border-top:3px solid var(--red)}
.footer-top{display:grid;grid-template-columns:1.7fr 1fr 1.2fr;gap:48px;padding-bottom:38px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer-brand img{height:40px;width:auto;margin-bottom:18px;filter:brightness(0) invert(1)}
.footer-brand p{font-size:14px;line-height:1.7;max-width:340px;color:rgba(255,255,255,.55)}
.footer-brand p a{color:rgba(255,255,255,.82);text-decoration:none;font-weight:600}
.footer-brand p a:hover{color:#fff}
.social{display:flex;gap:10px;margin-top:20px}
.social a{width:38px;height:38px;border-radius:8px;border:1px solid rgba(255,255,255,.16);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,.72);transition:all .16s}
.social a:hover{background:var(--red);border-color:var(--red);color:#fff}
.social svg{width:17px;height:17px;display:block}
.footer-col h4{font-family:var(--hd);font-size:11px;font-weight:600;letter-spacing:.11em;text-transform:uppercase;color:rgba(255,255,255,.4);margin-bottom:16px}
.footer-col a,.footer-col .linkish{display:flex;align-items:center;gap:9px;font-size:14px;color:rgba(255,255,255,.68);text-decoration:none;margin-bottom:11px;background:none;border:0;padding:0;cursor:pointer;font-family:var(--bd);text-align:left;transition:color .15s}
.footer-col a:hover,.footer-col .linkish:hover{color:#fff}
.footer-col svg{width:15px;height:15px;flex-shrink:0;opacity:.6}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;gap:20px;padding-top:22px;font-size:12.5px;color:rgba(255,255,255,.42);flex-wrap:wrap}
.footer-bottom a{color:rgba(255,255,255,.6);text-decoration:none}
.footer-bottom a:hover{color:#fff}
.footer-grant{font-size:11.5px;line-height:1.75;color:rgba(255,255,255,.32);margin-top:18px;padding-top:18px;border-top:1px solid rgba(255,255,255,.08)}

/* MODAL */
.modal{position:fixed;inset:0;z-index:200;display:flex;align-items:center;justify-content:center;padding:24px}
.modal[hidden]{display:none}
.modal-backdrop{position:absolute;inset:0;background:rgba(10,37,64,.74);backdrop-filter:blur(3px)}
.modal-box{position:relative;background:#fff;border-radius:12px;padding:34px;max-width:620px;width:100%;box-shadow:0 24px 60px rgba(0,0,0,.32);border-top:4px solid var(--red)}
.modal-box h3{font-family:var(--hd);font-size:19px;font-weight:600;color:var(--navy);margin-bottom:14px}
.modal-box p{font-size:14.5px;color:var(--body);line-height:1.78}
.modal-close{margin-top:26px;background:var(--red);color:#fff;border:0;border-radius:6px;padding:11px 26px;font-family:var(--hd);font-size:14px;font-weight:500;cursor:pointer}
.modal-close:hover{background:var(--red-dk)}

/* FCOI DOC */
.doc-header{background:var(--off);border-bottom:1px solid var(--line);padding:44px 0 38px}
.doc-meta{display:flex;gap:28px;flex-wrap:wrap;margin-bottom:16px}
.doc-meta div{display:flex;flex-direction:column;gap:2px}
.dm-label{font-family:var(--hd);font-size:10px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--faint)}
.dm-val{font-family:var(--hd);font-size:13.5px;font-weight:500;color:var(--body)}
.doc-header h1{font-family:var(--hd);font-size:clamp(23px,3.2vw,29px);font-weight:600;color:var(--navy);letter-spacing:-.02em;margin-bottom:7px}
.doc-header p{font-size:14.5px;color:var(--muted)}
.doc-layout{display:grid;grid-template-columns:216px 1fr;gap:46px;padding-top:46px;padding-bottom:78px;align-items:start}
.toc{position:sticky;top:100px;background:#FAFBFC;border:1px solid var(--line);border-radius:10px;padding:20px 16px;max-height:calc(100vh - 130px);overflow-y:auto}
.toc ul{list-style:none;display:flex;flex-direction:column;gap:1px}
.toc ul a{font-size:12.5px;color:var(--muted);text-decoration:none;display:block;padding:5px 9px;border-radius:5px;line-height:1.45}
.toc ul a:hover{background:var(--red-soft);color:var(--red)}
.doc-content{max-width:800px}
.doc-content section{margin-bottom:46px;scroll-margin-top:104px}
.doc-content h2{font-family:var(--hd);font-size:17px;font-weight:600;color:var(--navy);margin-bottom:16px;padding-bottom:11px;border-bottom:2px solid var(--red)}
.doc-content p{font-size:14.5px;line-height:1.85;margin-bottom:14px}
.doc-content ul,.doc-content ol{margin:12px 0 16px 22px;display:flex;flex-direction:column;gap:7px}
.doc-content li{font-size:14.5px;line-height:1.75}
.def{background:var(--off);border:1px solid var(--line);border-radius:8px;padding:16px 20px;margin-bottom:9px}
.def h4{font-family:var(--hd);font-size:13.5px;font-weight:600;color:var(--navy);margin-bottom:5px}
.def p{font-size:13.5px;color:#475569;line-height:1.75;margin-bottom:9px}
.def p:last-child{margin-bottom:0}
.def ul{margin:9px 0 9px 20px}
.def li{font-size:13.5px;color:#475569}
.callout{background:var(--tint);border:1px solid #F0CBD1;border-left:3px solid var(--red);border-radius:6px;padding:16px 20px;font-size:13.5px;color:#7a2733;line-height:1.72;margin:16px 0}
.contact-box{background:var(--off);border:1px solid var(--line);border-radius:8px;padding:18px 22px;font-size:14px;line-height:1.75;margin-top:12px}
.revision{margin-top:54px;padding-top:26px;border-top:1px solid var(--line)}

/* RESPONSIVE */
@media(max-width:1240px){
  #hero{background-size:auto 92%;padding:70px 0 74px}
  .hero-copy{max-width:540px}
}
@media(max-width:1020px){
  #hero{background-image:none;padding:56px 0 0}
  .hero-copy{max-width:100%}
  .hero-sub,.ide-hero{max-width:100%}
  .hero-img-m{display:block;margin-top:34px;line-height:0}
  .hero-img-m img{width:100%;display:block}
  .logo-grid{grid-template-columns:repeat(4,minmax(0,1fr))}
  .footer-top{grid-template-columns:1fr 1fr;gap:34px}
  .footer-brand{grid-column:1/-1}
  .doc-layout{grid-template-columns:1fr;gap:0}
  .toc{display:none}
  .video-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:880px){
  .wrap,.header-inner{padding-left:22px;padding-right:22px}
  .section{padding:60px 0}
  .grid-3{grid-template-columns:1fr}
  .split{grid-template-columns:1fr;gap:32px}
  .split-rev .split-media{order:0}
  .video-grid{grid-template-columns:1fr}
  .figure{padding:16px}
  .nav-toggle{display:flex}
  .nav{position:absolute;top:76px;left:0;right:0;background:#fff;flex-direction:column;align-items:stretch;gap:0;padding:8px 22px 18px;border-bottom:1px solid var(--line);box-shadow:0 12px 24px rgba(10,37,64,.08);display:none}
  .nav.open{display:flex}
  .nav a{padding:13px 0;font-size:15px;border-bottom:1px solid var(--line)}
  .nav a:last-child{border-bottom:none}
  .nav a::after{display:none}
}
@media(max-width:620px){
  .logo-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .logo-item{height:100px;padding:16px}
  .hero-actions{flex-direction:column;align-items:stretch}
  .btn{text-align:center}
  table.spec{font-size:13.5px}
  table.spec th,table.spec td{padding:12px 14px}
  .modal-box{padding:26px 22px}
  .brand img{height:32px}
  .header-inner{height:66px}
  .nav{top:66px}
}