/* ===========================================================
   Tachles-AI — site stylesheet · POWDER MONOCHROME edition
   Built on the Powder brand guide: powder-blue canvas with the
   brand gradient (deep turquoise LEFT → brighter RIGHT), white
   cards, deep-navy ink & buttons, one terracotta highlight.
   Fonts: Frank Ruhl Libre (display) + Heebo (body/UI).
   Class API kept compatible with site.js / i18n.js / a11y.js.
   =========================================================== */
@font-face{
  font-family:'Frank Ruhl Libre';
  src:url('fonts/FrankRuhlLibre[wght].ttf') format('truetype');
  font-weight:300 900;font-display:swap}
@font-face{
  font-family:'Heebo';
  src:url('fonts/Heebo[wght].ttf') format('truetype');
  font-weight:100 900;font-display:swap}

:root{
  /* powder palette */
  --canvas:#AFCED4; --scene:#C4DBDF; --band-bg:#EBE9E8; --nav-bg:#F4F3F4;
  --ink:#15313F; --ink-hover:#0E2430; --ink-soft:#45555E; --muted:#7C8A91;
  --on-ink:#F4F7F9;
  --bg:#FFFFFF; --paper:#EBE9E8; --paper-2:#E3EBED; --line:rgba(21,49,63,.14);
  /* terracotta — the one warm highlight (touches only, never a button fill) */
  --accent:#BE7150; --accent-ink:#7A3F28; --accent-soft:#F2E3DA;
  /* photo tonal teals (used sparingly in UI) */
  --petrol:#4E8897; --petrol-soft:#DFEBEE;
  --ochre:#659BA8;  --ochre-soft:#E4EEF0;
  --plum:#4E8897;   --plum-soft:#DFEBEE;
  --sage:#659BA8;   --sage-soft:#E4EEF0;
  --indigo:#15313F; --indigo-soft:#DFEBEE;
  /* brand gradient — deep turquoise LEFT, brighter RIGHT
     (deepened 14.07 per Calanit: whole-site bg more deep turquoise, less bright) */
  --grad:linear-gradient(90deg,#3D6E7E 0%,#5F97A6 42%,#7FB0BC 75%,#93BFC8 100%);

  --serif:"Frank Ruhl Libre","Times New Roman",serif;
  --sans:"Heebo",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --mono:"Heebo",ui-monospace,Menlo,monospace;

  --maxw:1180px; --radius:18px;
  --shadow:0 1px 2px rgba(21,49,63,.06),0 14px 34px -16px rgba(21,49,63,.24);
  --shadow-sm:0 1px 2px rgba(21,49,63,.05),0 6px 18px -10px rgba(21,49,63,.18);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--sans);background-color:#659BA8;
  /* exact brand gradient (25% / 45% / 30%) + silk texture blended on top for depth only */
  background-image:url("img/bg-texture.webp?v=2"),
    linear-gradient(90deg,#4E8897 0%,#4E8897 12%,#659BA8 48%,#AFCED4 85%,#AFCED4 100%);
  background-size:cover,100% 100%;background-position:center;background-repeat:no-repeat;
  background-attachment:fixed;background-blend-mode:soft-light,normal;
  color:var(--ink-soft);line-height:1.65;-webkit-font-smoothing:antialiased;position:relative;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{list-style:none}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 clamp(20px,4vw,40px);position:relative;z-index:2}

/* reveal-on-scroll: fade-up as elements enter the viewport (JS adds .in) */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s cubic-bezier(.22,1,.36,1),transform .7s cubic-bezier(.22,1,.36,1)}
.reveal.in{opacity:1;transform:none}
.reveal.d1{transition-delay:.08s}.reveal.d2{transition-delay:.16s}.reveal.d3{transition-delay:.24s}.reveal.d4{transition-delay:.32s}
@media(prefers-reduced-motion:reduce){.reveal,.reveal.in{opacity:1;transform:none;transition:none}}

h1,h2,h3,h4,.serif{font-family:var(--serif);color:var(--ink);font-weight:600;line-height:1.18;letter-spacing:-.01em}
h1 em,h2 em{font-style:normal;font-weight:600;color:var(--accent)}
.mono{font-family:var(--mono)}
.eyebrow{font-family:var(--sans);font-size:12.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--petrol);font-weight:700;display:inline-flex;align-items:center;gap:10px}
.center{text-align:center} .center .eyebrow{justify-content:center}

/* ---- buttons: one primary — the deep-navy pill ---- */
.btn{display:inline-flex;align-items:center;gap:8px;border-radius:999px;font-weight:500;font-size:15px;padding:13px 28px;border:none;cursor:pointer;font-family:var(--sans);transition:background .25s,transform .15s,box-shadow .25s}
.btn-primary{background:var(--ink);color:var(--on-ink)}
.btn-primary:hover{background:var(--ink-hover);transform:translateY(-1px)}
.btn-dark{background:var(--ink);color:var(--on-ink)}
.btn-dark:hover{background:var(--ink-hover);transform:translateY(-1px)}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{background:#F0F4F7;border-color:var(--ink)}
.btn-block{width:100%;justify-content:center}

/* ---- header / nav — light powder menu bar ---- */
header.site{position:sticky;top:0;z-index:60;background:var(--nav-bg);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;min-height:66px;gap:24px}
.brand{display:flex;align-items:center;gap:11px}
.brand .mark{width:36px;height:36px;border-radius:10px;background:var(--ink);display:grid;place-items:center;position:relative;flex:none}
.brand .mark span{font-family:var(--serif);font-weight:600;font-size:21px;color:var(--on-ink);line-height:1}
.brand .mark i{position:absolute;right:6px;bottom:7px;width:5px;height:5px;border-radius:50%;background:var(--accent)}
.brand .wordmark{font-family:var(--serif);font-weight:600;font-size:21px;color:var(--ink)}
.brand .wordmark b{color:var(--accent);font-weight:600} /* terracotta middot — per the locked logo direction */
.nav-links{display:none;gap:26px;align-items:center;font-size:14.5px;font-weight:400}
.nav-links a{color:rgba(21,49,63,.72);transition:color .2s}
.nav-links a:hover,.nav-links a.active{color:var(--ink)}
.nav-links a.active{font-weight:600}
.nav-cta{display:flex;align-items:center;gap:12px}
.nav-cta .btn{padding:9px 20px;font-size:14px}
.nav-book{white-space:nowrap}
.nav-book .nav-book-ic{display:none}
@media(max-width:920px){
  .nav-book .nav-book-txt{display:none}
  .nav-book .nav-book-ic{display:block}
  .nav-book{padding:11px;border-radius:50%;width:42px;height:42px;justify-content:center}
}
@media(min-width:920px){.nav-links{display:flex}}
.menu-btn{display:grid;gap:5px;background:none;border:none;cursor:pointer;padding:8px}
.menu-btn span{width:22px;height:2px;background:var(--ink);display:block}
@media(min-width:920px){.menu-btn{display:none}}
.mobile-menu{display:none;border-top:1px solid var(--line);background:var(--nav-bg)}
.mobile-menu.open{display:block}
.mobile-menu a{display:block;padding:15px 0;border-bottom:1px solid var(--line);font-weight:500;color:var(--ink)}

/* ---- sections ---- */
section{padding:clamp(56px,8vw,96px) 0}
.section-head{max-width:660px;margin-bottom:44px}
.section-head.center{margin-inline:auto}
.section-head h2{font-size:clamp(28px,3.6vw,42px);margin:14px 0 12px;font-weight:600}
.section-head p{font-size:16px;line-height:1.75;color:var(--ink-soft)}

/* ---- hero (interior pages) — quiet powder scene ---- */
.hero{position:relative;overflow:hidden}
.hero::after{display:none}
.hero .wrap{padding-top:clamp(52px,8vw,92px);padding-bottom:clamp(52px,8vw,92px)}
/* brand watermark — large serif T in ink, very quiet */
.hero-mark{position:absolute;right:clamp(-30px,1vw,40px);bottom:clamp(-110px,-8vw,-40px);z-index:0;pointer-events:none;user-select:none;
  font-family:var(--serif);font-weight:600;font-size:clamp(280px,44vw,560px);line-height:.7;color:var(--ink);opacity:.06}
html[dir="rtl"] .hero-mark{right:auto;left:clamp(-30px,1vw,40px)}
.hero h1{font-size:clamp(40px,6.4vw,72px);letter-spacing:-.01em;margin:20px 0 20px;max-width:18ch;font-weight:500}
.hero .lead{font-size:clamp(17px,2.2vw,20px);max-width:56ch;color:var(--ink-soft);line-height:1.7}
.hero-ctas{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.pill-row{display:flex;flex-wrap:nowrap;align-items:center;gap:22px;margin-top:34px}
.pill{background:none;border:0;border-radius:0;padding:0;font-size:14.5px;color:var(--ink);font-weight:600;white-space:nowrap}
@media(max-width:560px){.pill-row{gap:13px}.pill{font-size:12px}}

/* ---- grids & cards ---- */
.grid{display:grid;gap:16px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow-sm)}
.card .num{font-family:var(--sans);color:var(--petrol);font-size:12px;font-weight:700;letter-spacing:.1em;text-transform:uppercase}
.card h3{font-size:20px;margin:8px 0 8px;color:var(--ink)}
.card p{font-size:14.5px;line-height:1.7}

/* ---- badges ---- */
.badge{font-family:var(--sans);font-size:12px;font-weight:600;padding:6px 13px;border-radius:999px;letter-spacing:.02em}
.badge-accent{background:var(--accent-soft);color:var(--accent-ink)}
.badge-petrol{background:var(--petrol-soft);color:#37606B}
.badge-ochre{background:var(--ochre-soft);color:#37606B}
.badge-sage{background:var(--sage-soft);color:#37606B}
.badge-plum{background:var(--plum-soft);color:#37606B}
.badge-line{background:transparent;border:1px solid var(--line);color:var(--ink-soft)}
.dur{margin-inline-start:auto;font-family:var(--sans);font-size:12.5px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:5px 12px}

.feat-list li{font-size:14.5px;padding:9px 0;border-bottom:1px solid var(--line);color:var(--ink-soft);display:flex;gap:10px}
.feat-list li:last-child{border-bottom:none}
.feat-list li::before{content:"→";color:var(--accent);font-weight:700}

/* ---- band (cta) — deep navy card ---- */
.band{background:var(--ink);color:rgba(244,247,249,.85);border-radius:var(--radius);padding:clamp(36px,6vw,64px);position:relative;overflow:hidden}
.band h2{color:#fff;font-size:clamp(28px,4vw,42px);margin-bottom:14px;max-width:20ch;font-weight:500}
.band h2 em{color:#EFC5AF;font-style:normal}
.band p{max-width:52ch;margin-bottom:26px}
.band .eyebrow{color:#EFC5AF}
.band .dot{position:absolute;right:42px;top:42px;width:12px;height:12px;border-radius:50%;background:var(--accent)}
html[dir="rtl"] .band .dot{right:auto;left:42px}
.band .btn-primary{background:#fff;color:var(--ink)}
.band .btn-primary:hover{background:#EDF2F5}
@media(max-width:700px){.band .dot{display:none}}

/* ---- footer — white base (like the landing) ---- */
footer.site{background:#fff;color:var(--ink-soft);padding:56px 0 40px;position:relative;z-index:2;border-top:1px solid var(--line)}
footer.site .cols{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:32px;margin-bottom:36px}
footer.site .wordmark{font-family:var(--serif);font-weight:600;font-size:22px;color:var(--ink)}
footer.site .wordmark b{color:var(--accent)}
footer.site h4{font-family:var(--sans);font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);margin-bottom:14px;font-weight:700}
footer.site a{display:block;padding:6px 0;color:var(--ink-soft);font-size:14.5px}
footer.site a:hover{color:var(--ink)}
footer.site .fine{border-top:1px solid var(--line);padding-top:22px;font-size:12.5px;color:var(--muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}

/* ---- about / credentials ---- */
.creds{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.cred{background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow-sm)}
.cred .n{font-family:var(--serif);font-size:clamp(30px,3.4vw,40px);font-weight:600;color:var(--ink);line-height:1}
.cred .l{font-size:13.5px;color:var(--ink-soft);margin-top:8px;line-height:1.5}
@media(max-width:780px){.creds{grid-template-columns:1fr 1fr}}

/* alternating bios — photo one side, text the other (flat powder frame) */
.bio{display:grid;grid-template-columns:.92fr 1.08fr;gap:clamp(28px,5vw,64px);align-items:center;padding:clamp(34px,5vw,58px) 0}
.bio + .bio{border-top:1px solid var(--line)}
.bio--rev{grid-template-columns:1.08fr .92fr}
.bio-photo{position:relative;border-radius:var(--radius);overflow:hidden;aspect-ratio:4/5;
  background:var(--scene);box-shadow:var(--shadow-sm)}
.bio-photo img{width:100%;height:100%;object-fit:cover;object-position:center top}
.bio-text h2{font-size:clamp(28px,3.6vw,40px);color:var(--ink);margin-bottom:6px;font-weight:500}
.bio-name{display:flex;align-items:center;gap:14px;flex-wrap:wrap}
.li-icon{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:10px;background:#fff;border:1px solid var(--line);color:var(--ink);flex:none;transition:transform .25s,background .25s,color .25s}
.li-icon:hover{background:#0a66c2;color:#fff;border-color:transparent;transform:translateY(-2px)}
.li-icon svg{display:block}
.bio-text .role{display:block;font-family:var(--sans);font-size:12.5px;letter-spacing:.1em;text-transform:uppercase;font-weight:700;color:var(--petrol);margin-bottom:18px}
.bio-text p{font-size:16px;color:var(--ink-soft);line-height:1.75;margin-bottom:20px}
@media(max-width:760px){.bio,.bio--rev{grid-template-columns:1fr;gap:18px}.bio-photo{order:-1;aspect-ratio:4/5;max-height:300px;max-width:64%;margin-inline:auto}}

/* ---- forms / auth ---- */
.auth-wrap{min-height:calc(100vh - 66px);display:grid;place-items:center;padding:48px 20px}
.auth-card{width:100%;max-width:420px;background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:40px;box-shadow:var(--shadow)}
.auth-card h1{font-size:30px;margin:14px 0 6px;font-weight:500}
.auth-card .lead{font-size:15px;color:var(--ink-soft);margin-bottom:26px}
.field{margin-bottom:16px}
.field label{display:block;font-size:13px;font-weight:600;color:var(--ink);margin-bottom:6px}
.field input{width:100%;font-family:var(--sans);font-size:15px;padding:13px 15px;border:1.5px solid var(--line);border-radius:10px;background:#fff;color:var(--ink);transition:border-color .2s}
.field input:focus{outline:none;border-color:var(--petrol)}
.auth-msg{font-size:13.5px;padding:11px 14px;border-radius:9px;margin-bottom:16px;display:none}
.auth-msg.err{display:block;background:var(--accent-soft);color:var(--accent-ink)}
.auth-note{font-family:var(--sans);font-size:12.5px;color:var(--muted);margin-top:20px;line-height:1.6;border-top:1px solid var(--line);padding-top:16px}
.locked{min-height:60vh;display:grid;place-items:center;text-align:center;padding:60px 20px}

/* ---- course portal ---- */
.portal-bar{background:var(--ink);color:var(--on-ink);font-size:13.5px}
.portal-bar .wrap{display:flex;align-items:center;justify-content:space-between;min-height:48px;gap:14px;flex-wrap:wrap}
.portal-bar a.logout{color:#fff;border:1px solid rgba(255,255,255,.4);border-radius:999px;padding:5px 14px;font-size:12.5px;font-weight:600}
.portal-bar a.logout:hover{background:rgba(255,255,255,.12)}
.course{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--bg);box-shadow:var(--shadow-sm);
  transition:transform .3s cubic-bezier(.22,1,.36,1),box-shadow .3s}
.course:hover{transform:translateY(-3px);box-shadow:var(--shadow)}
.course .top{padding:24px 26px;border-bottom:1px solid var(--line)}
.course h3{font-size:21px;color:var(--ink);margin:12px 0 6px}
.course .res{padding:8px 26px 18px}
.course .res a{display:flex;align-items:center;gap:12px;padding:13px 0;border-bottom:1px solid var(--line);font-size:14.5px;color:var(--ink)}
.course .res a:last-child{border-bottom:none}
.course .res a:hover{color:var(--accent-ink)}
.course .res .ic{width:30px;height:30px;border-radius:8px;background:var(--petrol-soft);color:#37606B;display:grid;place-items:center;font-size:13px;flex:none}
.course .res .tag{margin-inline-start:auto;font-family:var(--sans);font-size:11px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}

/* ---- responsive ---- */
@media(max-width:860px){
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr 1fr}
  footer.site .cols{grid-template-columns:1fr 1fr}
}
@media(max-width:560px){
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr}
  footer.site .cols{grid-template-columns:1fr}
}

/* ===== language toggle (injected by i18n.js) ===== */
.lang-toggle{font-family:var(--sans);font-size:12.5px;font-weight:600;letter-spacing:.04em;padding:7px 13px;border:1px solid rgba(21,49,63,.3);border-radius:999px;background:transparent;color:rgba(21,49,63,.85);cursor:pointer;line-height:1;transition:border-color .2s,color .2s;white-space:nowrap}
.lang-toggle:hover{border-color:var(--ink);color:var(--ink)}

/* ===== Hebrew / RTL =====
   Frank Ruhl Libre + Heebo both carry full Hebrew — no font swap needed. */
html[dir="rtl"] body{text-align:right}
html[dir="rtl"] .center{text-align:center}
/* keep numerals and Latin runs left-to-right */
html[dir="rtl"] .mono,html[dir="rtl"] .dur,html[dir="rtl"] .no,html[dir="rtl"] .num,html[dir="rtl"] .cred .n{direction:ltr;unicode-bidi:isolate}
html[dir="rtl"] .cred,html[dir="rtl"] .creds{text-align:right}
html[dir="rtl"] input{text-align:right}
html[dir="rtl"] .feat-list li::before{content:"←"}
/* role labels: drop the Latin-only casing/tracking for Hebrew */
html[dir="rtl"] .bio-text .role{letter-spacing:.02em}

/* ============================================================
   ACCESSIBILITY (IS 5568 / WCAG 2.0 AA)
   ============================================================ */
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{
  outline:3px solid var(--ink);outline-offset:2px;border-radius:6px}
:focus:not(:focus-visible){outline:none}

.skip-link{position:fixed;top:-100px;inset-inline-start:12px;z-index:1000;background:var(--ink);color:#fff;
  padding:12px 20px;border-radius:10px;font-weight:600;font-size:15px;box-shadow:var(--shadow);transition:top .2s}
.skip-link:focus{top:12px}

.a11y-fab{position:fixed;bottom:18px;inset-inline-start:18px;z-index:990;width:54px;height:54px;border-radius:50%;
  border:2px solid #fff;background:var(--ink);color:#fff;display:grid;place-items:center;cursor:pointer;
  box-shadow:0 8px 22px -6px rgba(21,49,63,.5);transition:transform .2s,background .2s}
.a11y-fab:hover{background:var(--ink-hover);transform:translateY(-2px)}

.a11y-panel{position:fixed;bottom:84px;inset-inline-start:18px;z-index:991;width:248px;background:var(--bg);
  border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:14px;
  display:flex;flex-direction:column;gap:8px;text-align:start}
.a11y-panel[hidden]{display:none}
.a11y-panel-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px}
.a11y-panel-head strong{font-family:var(--serif);font-size:17px;color:var(--ink)}
.a11y-x{background:none;border:0;font-size:16px;cursor:pointer;color:var(--ink-soft);line-height:1;padding:4px}
.a11y-row{display:flex;gap:8px}
.a11y-row button{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:10px 6px;border:1px solid var(--line);
  border-radius:10px;background:var(--paper-2);cursor:pointer;font-weight:700;font-size:16px;color:var(--ink)}
.a11y-row button span{font-size:11px;font-weight:500;color:var(--ink-soft)}
.a11y-opt{padding:11px 14px;border:1px solid var(--line);border-radius:10px;background:var(--paper-2);cursor:pointer;
  font-size:14px;font-weight:600;color:var(--ink);text-align:start}
.a11y-opt[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
.a11y-reset{padding:10px 14px;border:0;border-radius:10px;background:var(--ink);color:#fff;cursor:pointer;font-size:14px;font-weight:600}
.a11y-statement{display:block;text-align:center;font-size:13px;font-weight:600;color:var(--accent-ink);padding-top:4px;text-decoration:underline}
.a11y-row button:hover,.a11y-opt:hover{border-color:var(--petrol)}

/* preference modes (classes set on <html> by a11y.js) */
html.a11y-fs-0{zoom:.9}
html.a11y-fs-2{zoom:1.1}
html.a11y-fs-3{zoom:1.2}
html.a11y-fs-4{zoom:1.3}
html.a11y-links a:not(.btn):not(.a11y-statement){text-decoration:underline!important;text-underline-offset:2px}
html.a11y-readable,html.a11y-readable body{font-family:Arial,Helvetica,system-ui,sans-serif!important;letter-spacing:.01em;line-height:1.8}
html.a11y-readable h1,html.a11y-readable h2,html.a11y-readable h3,html.a11y-readable .wordmark{font-family:Arial,Helvetica,system-ui,sans-serif!important}
/* high-contrast: darken text, flatten the gradient to white */
html.a11y-contrast{--ink:#000;--ink-soft:#1a1a1a;--muted:#333;--bg:#fff;--paper:#fff;--paper-2:#f2f2f2;--line:#000;
  --grad:linear-gradient(90deg,#fff,#fff);--canvas:#fff}
html.a11y-contrast a{text-decoration:underline}
html.a11y-contrast body{background:#fff!important}

/* ---- nav dropdown: Courses & Materials → Courses / Open guides ---- */
.nav-drop{position:relative;display:flex;align-items:center}
.nav-drop>a::after{content:"▾";font-size:9px;margin-inline-start:6px;opacity:.6}
.nav-drop-menu{position:absolute;top:100%;inset-inline-start:-10px;display:none;min-width:190px;
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px;
  box-shadow:0 14px 32px rgba(21,49,63,.16);z-index:70}
.nav-drop:hover .nav-drop-menu,.nav-drop:focus-within .nav-drop-menu{display:block}
.nav-drop-menu a{display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:var(--ink-soft)}
.nav-drop-menu a:hover,.nav-drop-menu a.active{background:#F0F5F6;color:var(--ink)}

/* ═══════ unified top nav — identical bar to the main page (2026-07-14) ═══════ */
#nav{position:sticky;top:0;z-index:60;background:var(--nav-bg);border-bottom:1px solid var(--line)}
#nav .bar{max-width:var(--maxw);margin-inline:auto;padding:13px clamp(14px,3vw,28px);
  display:flex;align-items:center;gap:26px}
#nav .logo{font-family:var(--serif);font-weight:600;font-size:20px;color:var(--ink);letter-spacing:.01em;text-decoration:none}
#nav .nav-menu{display:flex;gap:24px;align-items:center}
#nav .nav-menu a{font-size:14.5px;font-weight:400;color:rgba(21,49,63,.72);transition:color .3s;text-decoration:none}
#nav .nav-menu a:hover{color:var(--ink)}
#nav .nav-menu a.active{color:var(--ink);font-weight:700}
#nav .nav-end{margin-inline-start:auto;display:flex;align-items:center;gap:12px}
#nav .pill{display:inline-block;padding:9px 20px;font-size:14px;font-weight:500;background:var(--ink);
  color:var(--on-ink);border-radius:999px;text-decoration:none;transition:background .3s}
#nav .pill:hover{background:var(--ink-hover)}
#nav .drop{position:relative;display:flex;align-items:center}
#nav .drop>a::after{content:"▾";font-size:9px;margin-inline-start:6px;opacity:.6}
#nav .drop-menu{position:absolute;top:100%;inset-inline-start:-10px;display:none;min-width:180px;
  background:#fff;border:1px solid var(--line);border-radius:12px;padding:8px;
  box-shadow:0 14px 32px rgba(21,49,63,.16);z-index:70}
#nav .drop:hover .drop-menu,#nav .drop:focus-within .drop-menu{display:block}
#nav .drop-menu a{display:block;padding:9px 12px;border-radius:8px;font-size:14px;color:rgba(21,49,63,.8)}
#nav .drop-menu a:hover{background:#F0F5F6;color:var(--ink)}
@media(max-width:640px){#nav .nav-menu{display:none}#nav .bar{gap:14px}}