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label{display:block;font-size:.8rem;font-weight:600;color:var(--gold-label);margin-bottom:.35rem}.contact-form .field{margin-bottom:1.15rem}.contact-form input,.contact-form select,.contact-form textarea{width:100%;padding:.75rem .9rem;border:1px solid var(--border-gold);border-radius:var(--radius-sm);background:var(--bg-plat);transition:border-color .15s,box-shadow .15s}.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:none;border-color:var(--gold);box-shadow:0 0 0 3px #f1d67a66}.contact-form textarea{min-height:120px;resize:vertical}.form-success{display:none;padding:1.5rem;background:#fff2bdb3;border:1px solid var(--border-gold);border-radius:var(--radius);margin-top:1rem;color:var(--text)}.form-success.visible{display:block}.contact-aside{padding:1.75rem;background:var(--bg-frost);backdrop-filter:var(--blur-frost);-webkit-backdrop-filter:var(--blur-frost);border:1px solid var(--border-gold);border-radius:var(--radius);box-shadow:var(--shadow-card)}.contact-aside h3{font-size:1.25rem;margin-bottom:.75rem}.contact-aside p{color:var(--text-muted);font-size:.95rem}.mailto-link{display:inline;margin-top:1rem;font-family:var(--font-sans);font-weight:700;font-size:.95rem;color:#8b6a32!important;-webkit-text-fill-color:#8B6A32;background:none!important;border:none!important;box-shadow:none!important;padding:0;border-radius:0;text-decoration:none}.mailto-link:hover{color:#6e4e14!important;-webkit-text-fill-color:#6E4E14;filter:none;text-decoration:underline;text-underline-offset:3px}@media (max-width: 900px){.nav-desktop{display:none}.nav-toggle{display:inline-flex}.header-inner>.lang-toggle{margin-left:auto;display:flex}.nav-mobile .lang-toggle{margin-top:.5rem;align-self:flex-start}.stack-layout{grid-template-columns:1fr}.stack-toc{position:static;flex-direction:row;flex-wrap:wrap;overflow-x:auto}.metrics-grid{grid-template-columns:repeat(2,1fr)}.solutions-grid,.contact-layout,.stack-panel .card{grid-template-columns:1fr}.stack-panel .tags,.stack-panel a.panel-link{grid-column:1}}@media (max-width: 560px){.metrics-grid{grid-template-columns:1fr}.hero{padding:3.5rem 0}.section{padding:3rem 0}}body.login-page{min-height:100vh}body.login-page .site-header{border-bottom-color:#c5a05940}.login-shell{min-height:calc(100vh - var(--header-h));display:grid;place-items:center;padding:2.5rem 1.5rem 3.5rem;position:relative;overflow:hidden}.login-shell:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background-image:radial-gradient(circle,rgba(241,214,122,.45) 1px,transparent 1.2px);background-size:22px 22px;opacity:.14;mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 10%,transparent 70%);-webkit-mask-image:radial-gradient(ellipse 70% 60% at 50% 40%,#000 10%,transparent 70%);pointer-events:none}.login-card{position:relative;z-index:1;width:min(440px,100%);padding:1.75rem 1.6rem 1.5rem;border-radius:var(--radius);background:#fffdf8eb;border:1px solid rgba(197,160,89,.35);box-shadow:0 24px 60px #00000059,0 1px #ffffffd9 inset;-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px)}.login-kicker{font-size:.72rem;letter-spacing:.16em;text-transform:uppercase;color:var(--gold-label);font-weight:600;margin:0 0 .35rem}.login-card h1{font-family:var(--font-serif);font-size:1.85rem;font-weight:600;color:var(--text);margin:0 0 .4rem;line-height:1.2}.login-lead{margin:0 0 1.25rem;color:var(--text-muted);font-size:.95rem;line-height:1.5}.login-actions{display:flex;flex-direction:column;gap:.65rem}.login-btn{display:inline-flex;align-items:center;justify-content:center;gap:.4rem;min-height:44px;padding:.65rem 1rem;border-radius:var(--radius-sm);font-family:var(--font-sans);font-size:.92rem;font-weight:600;cursor:pointer;border:1px solid transparent;transition:background .15s,border-color .15s,color .15s,opacity .15s}.login-btn:disabled{opacity:.55;cursor:not-allowed}.login-btn--primary{background:var(--navy);color:var(--gold-bright);border-color:#c5a0598c}.login-btn--primary:hover:not(:disabled){background:var(--navy-mid);border-color:var(--gold)}.login-btn--ghost{background:transparent;color:var(--text-body);border-color:#0a16281f}.login-btn--ghost:hover:not(:disabled){border-color:#c5a0598c;color:var(--navy)}.login-btn--link{background:none;border:none;color:#8b6a32;font-weight:600;min-height:auto;padding:.25rem 0;text-decoration:underline;text-underline-offset:3px}.login-muted{margin:0;font-size:.8rem;color:var(--text-muted);line-height:1.45}.login-divider{display:flex;align-items:center;gap:.75rem;margin:1.15rem 0 1rem;color:var(--text-muted);font-size:.78rem;letter-spacing:.04em;text-transform:uppercase}.login-divider:before,.login-divider:after{content:"";flex:1;height:1px;background:#0a16281a}.login-form{display:flex;flex-direction:column;gap:.65rem}.login-input{width:100%;min-height:44px;padding:.65rem .85rem;border-radius:var(--radius-sm);border:1px solid rgba(10,22,40,.12);background:#fff;color:var(--text);font-family:var(--font-sans);font-size:.95rem}.login-input:focus{outline:2px solid rgba(197,160,89,.45);outline-offset:1px;border-color:#c5a0598c}.login-input:disabled{background:#f3f4f6;color:var(--text-muted)}.login-form-links{display:flex;justify-content:space-between;gap:1rem}.login-status{margin:.9rem 0 0;font-size:.86rem;line-height:1.45;color:var(--text-muted)}.login-status.is-success{color:#166534}.login-status.is-error{color:#b42318}.login-fallback{margin-top:.85rem;padding-top:.85rem;border-top:1px solid rgba(10,22,40,.08);display:none}.login-fallback.is-visible{display:block}.login-foot{margin-top:1.1rem;text-align:center}.login-foot a{color:#8b6a32;font-weight:600;text-decoration:none;font-size:.88rem}.login-foot a:hover{text-decoration:underline;text-underline-offset:3px}.nav-login{margin-left:.25rem;color:var(--gold-bright);font-size:.88rem;font-weight:600;text-decoration:none;white-space:nowrap;letter-spacing:.02em}.nav-login:hover{color:#ffe9a3;text-decoration:underline;text-underline-offset:3px}.nav-mobile .nav-login{display:block;padding:.75rem 1.5rem;margin:0;border-top:1px solid rgba(197,160,89,.2)}.login-header-actions{margin-left:auto;display:flex;align-items:center;gap:.85rem}.login-header-home{color:var(--text-on-navy);font-size:.88rem;font-weight:600;text-decoration:none}.login-header-home:hover{color:var(--gold-bright)}.theme-toggle{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:1px solid rgba(197,160,89,.5);background:#ffffffb3;color:var(--gold-deep);font-family:var(--font-sans);font-size:.72rem;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:.38rem .7rem;border-radius:var(--radius-pill);cursor:pointer;flex-shrink:0}.theme-toggle:hover{border-color:#8f6519a6;background:#fff}html[data-theme=light] .site-header,html[data-theme=light] body.login-page .site-header{background:#fff!important;border-bottom:1px solid rgba(197,160,89,.32)!important}html[data-theme=light] .hero,html[data-theme=light] .page-hero,html[data-theme=light] .cta-band{background:linear-gradient(180deg,#fff,#faf8f4 50%,#fff2bd 120%)!important;color:#111827!important}html[data-theme=light] .site-footer{background:#fff!important;border-top:1px solid rgba(197,160,89,.32)!important}html[data-theme=light] .footer-meta{color:#6b7280!important}html[data-theme=light] .footer-brand{color:#0a1628!important}html[data-theme=light] .site-footer .footer-links a{color:#8f6519!important}html[data-theme=light] .site-footer .footer-links a:hover{color:#b9892a!important}html[data-theme=light] .nav-mobile{background:#fff!important}html[data-theme=light] body.login-page{background:linear-gradient(180deg,#fff,#faf8f4 50%,#fff2bd 140%)!important}html[data-theme=light] .hero h1,html[data-theme=light] .page-hero h1,html[data-theme=light] .cta-band h2{color:#0a1628!important;text-shadow:none!important}html[data-theme=light] .hero-lead,html[data-theme=light] .cta-band p{color:#6b7280!important;text-shadow:none!important}html[data-theme=light] .logo-wordmark,html[data-theme=light] .site-footer .logo-wordmark{color:#0a1628!important}html[data-theme=light] .nav-desktop a{color:#111827b8!important}html[data-theme=light] .nav-desktop a.active{color:#8f6519!important;background:transparent!important;box-shadow:none!important;border-bottom-color:#c5a059!important}html[data-theme=light] .nav-desktop a:hover{background:transparent!important;color:#8f6519!important}html[data-theme=light] .nav-login{color:#8f6519!important}html[data-theme=light] .lang-toggle button{color:#1118278c!important}html[data-theme=light] .lang-toggle button.active{color:#8f6519!important;-webkit-text-fill-color:#8F6519!important;background:#f1d67a59!important}html[data-theme=light]{--bg: #FAF8F4;--bg-plat: #FFFFFF;--bg-cream: #FFFDF8;--bg-card: rgba(255, 255, 255, .86);--bg-card-solid: #FFFFFF;--bg-frost: rgba(255, 255, 255, .78);--text: #111827;--text-body: #1F2937;--text-muted: #6B7280}html[data-theme=light] body{background:var(--bg);color:var(--text-body)}html[data-theme=light] .site-header{background:#fff;border-bottom:1px solid rgba(197,160,89,.32);box-shadow:0 1px #fff2bd99}html[data-theme=light] .site-header:before{opacity:.18;background-image:radial-gradient(circle,rgba(197,160,89,.55) 1px,transparent 1.2px);mask-image:none;-webkit-mask-image:none}html[data-theme=light] .site-header:after{opacity:0}html[data-theme=light] .logo-wordmark{color:var(--navy)}html[data-theme=light] .nav-desktop a{color:#111827b8}html[data-theme=light] .nav-desktop a:hover{color:var(--gold-deep);background:transparent}html[data-theme=light] .nav-desktop a.active{background:transparent;color:var(--gold-deep);box-shadow:none;border-bottom-color:var(--gold)}html[data-theme=light] .lang-toggle{background:#fffdf8;border-color:#c5a05973}html[data-theme=light] .lang-toggle button{color:#1118278c}html[data-theme=light] .lang-toggle button.active{background:#f1d67a59;color:var(--gold-deep);-webkit-text-fill-color:var(--gold-deep)}html[data-theme=light] .nav-toggle{background:#fffdf8;color:var(--gold-deep);border-color:#c5a05980}html[data-theme=light] .nav-mobile{background:#fff;border-bottom-color:#c5a05947}html[data-theme=light] .nav-mobile a{color:var(--text-body)}html[data-theme=light] .nav-login{color:var(--gold-deep)}html[data-theme=light] .nav-login:hover{color:var(--gold-metal)}html[data-theme=light] .theme-toggle{color:var(--gold-deep);background:#fffdf8;border-color:#c5a05980}html[data-theme=light] .hero,html[data-theme=light] .page-hero,html[data-theme=light] .cta-band{background:linear-gradient(180deg,#fff,#faf8f4 55%,#fff2bd 130%);color:var(--text);border-color:#c5a05947}html[data-theme=light] .hero:before,html[data-theme=light] .page-hero:before,html[data-theme=light] .cta-band:before{opacity:.22;background-image:radial-gradient(circle,rgba(197,160,89,.55) .8px,transparent 1.2px)}html[data-theme=light] .hero h1,html[data-theme=light] .page-hero h1,html[data-theme=light] .cta-band h2{color:var(--navy);text-shadow:none}html[data-theme=light] .hero-eyebrow,html[data-theme=light] .page-hero .section-label,html[data-theme=light] .section-label{color:var(--gold-label)}html[data-theme=light] .hero-lead,html[data-theme=light] .page-hero p,html[data-theme=light] .cta-band p{color:var(--text-muted);text-shadow:none}html[data-theme=light] .hero .text-link,html[data-theme=light] .cta-band .text-link{color:var(--gold-deep)}html[data-theme=light] .hero:after,html[data-theme=light] .page-hero:after{background:var(--bg)}html[data-theme=light] .site-footer{background:#fff;border-top:1px solid rgba(197,160,89,.32);color:var(--text-muted)}html[data-theme=light] .site-footer .logo-wordmark{color:var(--navy)}html[data-theme=light] .footer-links a{color:var(--gold-deep)}html[data-theme=light] .footer-links a:hover{color:var(--gold-metal)}html[data-theme=light] body.login-page{background:linear-gradient(180deg,#fff,#faf8f4 50%,#fff2bd 140%)}html[data-theme=light] body.login-page .site-header{background:#fff;border-bottom:1px solid rgba(197,160,89,.32)}html[data-theme=light] body.login-page .logo-wordmark,html[data-theme=light] body.login-page .login-header-home{color:var(--navy)}html[data-theme=light] body.login-page .login-shell:before{opacity:.2;background-image:radial-gradient(circle,rgba(197,160,89,.5) 1px,transparent 1.2px)}html[data-theme=light] body.login-page .login-card{background:#fffffff0;border-color:#c5a05959;box-shadow:var(--shadow-card),0 18px 50px #8f651914}html[data-theme=light] body.login-page .login-btn--primary{background:linear-gradient(180deg,#c5a059,#8f6519);color:#fff;border-color:#8f65198c}html[data-theme=light] body.login-page .login-btn--primary:hover:not(:disabled){background:linear-gradient(180deg,#f1d67a,#c5a059);color:var(--navy)}html[data-theme=dark]{--bg: #F4F2ED;--bg-plat: #FAF8F4;--bg-cream: #FFFDF8;--bg-card: rgba(255, 255, 255, .72);--bg-card-solid: #FFFFFF;--bg-frost: rgba(255, 255, 255, .55);--text: #111827;--text-body: #1F2937;--text-muted: #6B7280;--border-frost: rgba(255, 255, 255, .45);--border-soft: rgba(10, 22, 40, .06);--shadow-soft: 0 12px 40px rgba(7, 16, 35, .08);--shadow-card: 0 8px 28px rgba(10, 22, 40, .06), 0 1px 0 rgba(255, 255, 255, .8) inset}html[data-theme=dark] body{background:var(--bg);color:var(--text-body)}html[data-theme=dark] .site-header,html[data-theme=dark] body.login-page .site-header{background:var(--grad-navy)!important;border-bottom:1px solid rgba(197,160,89,.35)!important;box-shadow:none!important}html[data-theme=dark] .site-header:before{opacity:.22}html[data-theme=dark] .site-header:after{opacity:1}html[data-theme=dark] .logo-wordmark{color:#f5f0e6!important}html[data-theme=dark] .nav-desktop a{color:#f5f0e6b8!important}html[data-theme=dark] .nav-desktop a:hover{color:var(--gold-bright)!important;background:#f1d67a14!important}html[data-theme=dark] .nav-desktop a.active{background:transparent!important;color:#ffe08a!important;box-shadow:none!important;border-bottom-color:#f1d67a!important}html[data-theme=dark] .nav-desktop a:hover{background:transparent!important}html[data-theme=dark] .lang-toggle{background:#ffffff0f;border-color:#c5a05973}html[data-theme=dark] .lang-toggle button{color:#f5f0e6b3!important}html[data-theme=dark] .lang-toggle button.active{background:#f1d67a38!important;color:#ffe08a!important;-webkit-text-fill-color:#FFE08A!important}html[data-theme=dark] .theme-toggle{color:var(--gold-bright);background:#ffffff14;border-color:#c5a05973}html[data-theme=dark] .theme-toggle:hover{border-color:#f1d67abf;background:#ffffff24}html[data-theme=dark] .nav-toggle{background:#ffffff0f;color:var(--gold-bright);border-color:#c5a05980}html[data-theme=dark] .nav-mobile{background:var(--navy-mid)!important;border-bottom-color:#c5a0594d}html[data-theme=dark] .nav-mobile a{color:#f5f0e6d9}html[data-theme=dark] .nav-login{color:var(--gold-bright)!important}html[data-theme=dark] .nav-login:hover{color:#ffe9a3!important}html[data-theme=dark] .hero,html[data-theme=dark] .page-hero,html[data-theme=dark] .cta-band{background:var(--grad-navy)!important;color:var(--text-on-navy)!important;border-color:#c5a05959}html[data-theme=dark] .hero h1,html[data-theme=dark] .page-hero h1,html[data-theme=dark] .cta-band h2{color:#fff!important;text-shadow:0 2px 24px rgba(0,0,0,.35)!important}html[data-theme=dark] .hero-eyebrow{color:var(--gold-bright)!important}html[data-theme=dark] .hero-lead,html[data-theme=dark] .cta-band p{color:#fffaf0eb!important;text-shadow:0 1px 2px rgba(0,0,0,.35)!important}html[data-theme=dark] .hero:after,html[data-theme=dark] .page-hero:after{background:var(--bg)}html[data-theme=dark] .site-footer{background:var(--navy)!important;border-top:1px solid rgba(197,160,89,.3)!important;color:#f5f0e6b3}html[data-theme=dark] .site-footer .logo-wordmark{color:#f5f0e6!important}html[data-theme=dark] .footer-links a{color:#f1d67abf}html[data-theme=dark] .footer-links a:hover{color:var(--gold-bright)}html[data-theme=dark] body.login-page{background:var(--grad-navy)!important}html[data-theme=dark] body.login-page .logo-wordmark{color:#f5f0e6!important}html[data-theme=dark] body.login-page .login-header-home{color:var(--text-on-navy)}html[data-theme=dark] body.login-page .login-card{background:#fffdf8eb;border-color:#c5a05959;color:var(--text-body)}html[data-theme=dark] body.login-page .login-card h1{color:var(--text)}html[data-theme=dark] body.login-page .login-lead,html[data-theme=dark] body.login-page .login-muted{color:var(--text-muted)}html[data-theme=dark] body.login-page .login-input{background:#fff;color:var(--text);border-color:#0a16281f}html[data-theme=dark] body.login-page .login-btn--primary{background:var(--navy);color:var(--gold-bright);border-color:#c5a0598c}html[data-theme=dark] body.login-page .login-btn--ghost{background:transparent;color:var(--text-body);border-color:#0a16281f}
.lang-toggle{flex-wrap:wrap;max-width:22rem}
.lang-toggle button{padding:.28rem .48rem;font-size:.7rem;white-space:nowrap}
.login-header-actions{display:flex;align-items:center;gap:.55rem;flex-wrap:wrap}
.login-header-actions .lang-toggle{margin-left:0}
html[dir=rtl] body{font-family:"Noto Sans Arabic",Inter,ui-sans-serif,system-ui,sans-serif}
html[dir=rtl] .logo-wordmark{font-family:"Playfair Display","Times New Roman",Georgia,serif}
html[dir=rtl] .nav-mobile a,html[dir=rtl] .nav-mobile .lang-toggle{text-align:right;align-self:flex-end}
html[dir=rtl] .header-inner>.lang-toggle{margin-left:0;margin-right:auto}

/* Live 390px: langs+theme+Client login pushed the hamburger off-screen (~415px header).
   Keep the 68px bar as logo + hamburger only; drawer is a sibling so header-inner can clip. */
html,body{max-width:100%;overflow-x:clip}
.site-header{height:auto;min-height:var(--header-h);overflow:visible}
.header-inner{min-width:0;width:100%;max-width:100%;min-height:var(--header-h);height:auto;box-sizing:border-box}
.logo{min-width:0}
.nav-toggle{flex-shrink:0}
.nav-mobile{position:absolute;left:0;right:0;top:100%;z-index:3;max-height:min(72vh,calc(100dvh - var(--header-h)));overflow-x:hidden;overflow-y:auto}
.nav-mobile .lang-toggle{max-width:100%;overflow:visible;border-radius:12px}
.nav-mobile .nav-login{white-space:normal}
.card-grid,.insights-grid,.group-grid{min-width:0}
.equation{overflow-wrap:anywhere}

@media (max-width: 900px){
  .header-inner{
    display:grid;
    grid-template-columns:minmax(0,1fr) auto;
    align-items:center;
    gap:.5rem;
    padding:0 .75rem;
    overflow:hidden;
  }
  .header-inner>.logo{grid-column:1;min-width:0}
  .header-inner>.nav-toggle{grid-column:2;display:inline-flex!important;margin:0}
  .header-inner>:not(.logo):not(.nav-toggle):not(.login-header-actions){display:none!important}
  .nav-mobile .lang-toggle{display:flex;margin-top:.5rem;align-self:stretch}
  .nav-mobile .theme-toggle{align-self:flex-start;margin:.35rem .85rem .15rem}
  .nav-mobile .nav-login{display:block!important}
  .card-grid,.insights-grid,.group-grid{grid-template-columns:1fr}
  .container{padding:0 1rem}
  .login-header-home{display:none}
  .login-header-actions{max-width:min(100%,calc(100vw - 7.5rem));justify-content:flex-end;min-width:0}
  .login-header-actions .lang-toggle{max-width:100%}
  .login-header-actions .lang-toggle button[data-lang=zh],
  .login-header-actions .lang-toggle button[data-lang=ar]{font-size:0}
  .login-header-actions .lang-toggle button[data-lang=zh]:after{content:"中";font-size:.7rem;font-weight:700}
  .login-header-actions .lang-toggle button[data-lang=ar]:after{content:"ع";font-size:.7rem;font-weight:700}
}

@media (max-width: 560px){
  .equation{display:flex;flex-wrap:wrap;justify-content:center;gap:.15rem 0}
  .login-shell{padding:1.5rem 1rem 2.5rem;min-height:calc(100dvh - var(--header-h))}
}