/* ==========================================================================
   NOGA DIAMONDS · design system  (assets/css/noga.css)
   Dark atelier: warm black, champagne gold, ivory. Cormorant Garamond for
   display and large numbers, Jost for text. No external dependencies.

   SETUP
   <html lang="es" class="lang-es">  + early inline: document.documentElement.classList.add('js')
   <link rel="stylesheet" href="assets/css/noga.css">  <script src="assets/js/noga.js" defer></script>

   TYPOGRAPHY TRAP: the `font:` shorthand resets `font-variant-numeric`.
   This file never uses `font:`. If you must, add `font-variant-numeric:
   lining-nums` AFTER it, otherwise Cormorant shows old-style figures
   ("1" looks like "I"). Utility: .num (lining + tabular).

   LANGUAGE (bilingual in one page)
   Pairs of elements with lang="es" / lang="en". Only the active language is
   shown, driven by a class on <html>: .lang-es (default) or .lang-en.
   Inline foreign terms that must ALWAYS show (e.g. <i lang="en" class="term">
   mined diamonds</i> inside Spanish text) need the class .term.
   Switch buttons: <button data-set-lang="es" aria-pressed="true">ES</button>

   LAYOUT          .container (--narrow | --wide) · .section (--alt | --tight | --flush)
                   .section-head (.kicker, h2, .lede) · .grid (--2 | --3 | --4 | --auto, var --min)
                   .split (--reverse) · .stack (var --gap) · .cluster · .center · .full-bleed
   TYPE            h1–h4 · .display · .h1 .h2 .h3 .h4 · .kicker · .eyebrow · .lede · .prose
                   .num · .small · .fine · .muted · .gold · .cite · .lc · .term · .quote
   BUTTONS         .btn (--ghost | --link | --sm | --block) · .icon-btn · .badge (--gold)
   HEADER          .site-header (.is-scrolled, .is-open) > .container > .brand(.mark>.stone)
                   .nav#site-nav (a[aria-current="page"]) · .lang-switch · .nav-toggle[aria-controls]
   HERO            .hero > .hero__mark .hero__descr .hero__title .hero__lede .hero__ctas .hero__scroll
   CARD            .card (--link | --feature | --flat) > .card__media .card__body .card__kicker
                   .card__title .card__text .card__meta · .stat > .stat__value[data-count] .stat__label
   TABS            .tabs[data-tabs] > .tabs__list[role=tablist] > .tabs__tab[role=tab][aria-controls]
                   + .tabs__panel[role=tabpanel]
   LEVEL SLIDER    .level-slider[data-levels] > input.range[type=range] + .range-labels > button
                   .level-stage > .level-item[data-level="0..n"] · .level-text[data-level]
                   or img[data-level-srcs="a.svg|b.svg|…"]
   COMPARE         .compare[data-compare] > .compare__before + .compare__after + .compare__handle
                   (role=slider, keyboard) · .compare__label--before / --after
   CAROUSEL        .carousel[data-carousel] > .carousel__track > .carousel__item ·
                   .carousel__btn[data-dir="-1|1"] (inside .carousel__nav)
   ACCORDION       .accordion[data-accordion="single"] > details.accordion__item > summary + .accordion__body
   DIAGRAM         .diagram[data-diagram] > (inline svg .diagram__svg with .part#id) +
                   button.hotspot[data-target][style="--x:50%;--y:20%"] > .hotspot__dot + .hotspot__tip
                   (--below | --left | --right) · .diagram-legend button[data-target]
   LIGHTPATH       .lightpath (inline svg with .ray paths; animates when .is-visible)
   MEDIA           .media-frame (--round | --wide) · video[data-autoplay-visible] · .figure
   CHAT            .chat-fab[aria-controls] · .chat-panel#chat (.is-open) > .chat-panel__head
                   .chat-log[aria-live] > .msg.msg--bot | .msg--user · .chat-form · .chat-chips
   FOOTER          .site-footer > .footer-grid .footer-title .footer-links .sources .legal
   MOTION          .reveal (--fade | --scale) · .reveal-stagger > * · state .is-visible
                   All motion is removed under prefers-reduced-motion.
   UTILITIES       .visually-hidden · .skip-link · .divider · .hairline
   ========================================================================== */

/* ---------- fonts (local, from assets/fonts) ---------- */
@font-face{font-family:"Cormorant Garamond";font-style:normal;font-weight:400;font-display:swap;src:url("../fonts/cormorant-garamond-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"Cormorant Garamond";font-style:italic;font-weight:400;font-display:swap;src:url("../fonts/cormorant-garamond-latin-400-italic.woff2") format("woff2")}
@font-face{font-family:"Cormorant Garamond";font-style:normal;font-weight:500;font-display:swap;src:url("../fonts/cormorant-garamond-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:"Cormorant Garamond";font-style:italic;font-weight:500;font-display:swap;src:url("../fonts/cormorant-garamond-latin-500-italic.woff2") format("woff2")}
@font-face{font-family:"Cormorant Garamond";font-style:normal;font-weight:600;font-display:swap;src:url("../fonts/cormorant-garamond-latin-600-normal.woff2") format("woff2")}
@font-face{font-family:"Cormorant Garamond";font-style:italic;font-weight:600;font-display:swap;src:url("../fonts/cormorant-garamond-latin-600-italic.woff2") format("woff2")}
@font-face{font-family:"Jost";font-style:normal;font-weight:300;font-display:swap;src:url("../fonts/jost-latin-300-normal.woff2") format("woff2")}
@font-face{font-family:"Jost";font-style:normal;font-weight:400;font-display:swap;src:url("../fonts/jost-latin-400-normal.woff2") format("woff2")}
@font-face{font-family:"Jost";font-style:normal;font-weight:500;font-display:swap;src:url("../fonts/jost-latin-500-normal.woff2") format("woff2")}
@font-face{font-family:"Frank Ruhl Libre";font-style:normal;font-weight:400;font-display:swap;src:url("../fonts/frank-ruhl-libre-hebrew-400-normal.woff2") format("woff2")}

/* ---------- tokens ---------- */
:root{
  color-scheme:dark;
  /* colour: palette Q02 «Rubino di notte» (owner, 11/10/2026): absolute black page, dark eggplant surfaces */
  --ink:#000000;          /* page */
  --ink-2:#0b0409;        /* alt section */
  --surface:#140712;      /* cards */
  --surface-2:#1c0a19;    /* raised / hover */
  --line:#2a1426;         /* hairlines */
  --line-2:#432239;       /* stronger hairlines, inputs */
  /* colour: text (contrast on --ink: ivory 17:1, stone 9.6:1, mute 5.6:1) */
  --ivory:#f6f0e6;
  --stone:#c0b4b0;
  --mute:#978a87;
  /* colour: rose gold C05 refined, the logo's metal (tint on ink 12.9:1); token names kept from the gold era */
  --gold:#e2c7ba;
  --gold-hi:#f6e9e2;
  --gold-lo:#b48e7e;
  --gold-deep:#6e4a40;
  --gold-grad:linear-gradient(180deg,#edd9ce 0%,#e5cbbe 34%,#ead3c7 39.2%,#f6e9e2 40.2%,#e3c8bb 41.4%,#d9beb1 60%,#cdb1a4 100%);
  --gold-veil:rgba(226,199,186,.08);
  --gold-veil-2:rgba(226,199,186,.16);
  /* colour: the pop. Ruby only for the main call to action and active choices (ivory on ruby 4.65:1; ruby on ink 3.98:1,
     so never small text); light violet for links (7:1 on ink); violet indigo for bands */
  --ruby:#c8323f; --ruby-hi:#ae2836; --violet:#9a8ad8; --violet-hi:#b9aeea; --violet-deep:#4f4086;
  /* colour: illustration accents (ASET legend) */
  --aset-red:#c8514a; --aset-green:#3e8c5a; --aset-blue:#5566b8; --aset-grey:#9a9a96;
  /* typography */
  --font-display:"Cormorant Garamond","Cormorant",Garamond,"Times New Roman",serif;
  --font-body:"Jost","Futura","Avenir Next","Segoe UI",system-ui,sans-serif;
  --font-hebrew:"Frank Ruhl Libre","Times New Roman",serif;
  /* fluid type scale: 360px → 1440px */
  --step--2:clamp(.719rem,.708rem + .046vw,.75rem);     /* 11.5 → 12 */
  --step--1:clamp(.844rem,.823rem + .093vw,.906rem);    /* 13.5 → 14.5 */
  --step-0:clamp(1rem,.958rem + .185vw,1.125rem);       /* 16 → 18 */
  --step-1:clamp(1.1875rem,1.125rem + .278vw,1.375rem); /* 19 → 22 */
  --step-2:clamp(1.4375rem,1.333rem + .463vw,1.75rem);  /* 23 → 28 */
  --step-3:clamp(1.75rem,1.542rem + .926vw,2.375rem);   /* 28 → 38 */
  --step-4:clamp(2.125rem,1.708rem + 1.852vw,3.375rem); /* 34 → 54 */
  --step-5:clamp(2.5rem,1.75rem + 3.333vw,4.75rem);     /* 40 → 76 */
  --leading-tight:1.08; --leading-snug:1.25; --leading:1.7;
  --tracking-caps:.24em; --tracking-wide:.14em;
  /* spacing */
  --space-1:4px; --space-2:8px; --space-3:12px; --space-4:16px; --space-5:24px;
  --space-6:32px; --space-7:48px; --space-8:64px; --space-9:96px;
  --space-fluid:clamp(24px,1rem + 2.5vw,48px);
  --section-pad:clamp(72px,2.5rem + 7.4vw,152px);
  --gutter:max(16px,4vw);
  --wrap:1200px; --wrap-narrow:780px; --wrap-wide:1440px;
  --header-h:68px;
  /* radii: restrained, jewellery-box corners */
  --radius-xs:2px; --radius-sm:4px; --radius:10px; --radius-lg:18px; --radius-pill:999px;
  /* shadows */
  --shadow-sm:0 1px 2px rgba(0,0,0,.5);
  --shadow:0 12px 32px -12px rgba(0,0,0,.75);
  --shadow-lg:0 30px 70px -24px rgba(0,0,0,.9);
  --glow:0 0 0 1px rgba(226,199,186,.25),0 10px 40px -10px rgba(226,199,186,.25);
  /* motion */
  --ease-out:cubic-bezier(.22,.61,.36,1);
  --ease-in-out:cubic-bezier(.65,0,.35,1);
  --ease-lux:cubic-bezier(.16,1,.3,1);
  --dur-1:.16s; --dur-2:.28s; --dur-3:.5s; --dur-4:.9s; --dur-5:1.4s;
  --z-header:50; --z-chat:60; --z-menu:45;
  interpolate-size:allow-keywords;
}

/* ---------- base ---------- */
*,*::before,*::after{box-sizing:border-box}
html{background:var(--ink);-webkit-text-size-adjust:100%;text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 16px);font-variant-numeric:lining-nums proportional-nums}
body{margin:0;background:var(--ink);color:var(--ivory);font-family:var(--font-body);font-weight:300;font-size:var(--step-0);line-height:var(--leading);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility;overflow-x:clip;font-variant-numeric:lining-nums proportional-nums}
img,svg,video,canvas,picture{display:block;max-width:100%;height:auto}
a{color:inherit;text-underline-offset:.22em;text-decoration-thickness:1px}
a:hover{color:var(--gold-hi)}
button,input,select,textarea{font:inherit;color:inherit;font-variant-numeric:lining-nums}
p{margin:0}
::selection{background:var(--gold);color:var(--ink)}
:focus-visible{outline:2px solid var(--gold-hi);outline-offset:3px;border-radius:var(--radius-xs)}
:focus:not(:focus-visible){outline:none}

/* language pairs */
html:not(.lang-en) [lang="en"]:not(.term),
html.lang-en [lang="es"]:not(.term){display:none!important}

/* ---------- typography ---------- */
h1,h2,h3,h4,.display,.h1,.h2,.h3,.h4{font-family:var(--font-display);font-weight:500;margin:0;letter-spacing:-.005em;text-wrap:balance;color:var(--ivory);font-variant-numeric:lining-nums}
.display{font-size:var(--step-5);line-height:1.02;font-weight:500}
h1,.h1{font-size:var(--step-5);line-height:var(--leading-tight)}
h2,.h2{font-size:var(--step-4);line-height:var(--leading-tight)}
h3,.h3{font-size:var(--step-2);line-height:var(--leading-snug)}
h4,.h4{font-size:var(--step-1);line-height:var(--leading-snug)}
em,.em{font-style:italic;color:var(--gold-hi)}
h1 em,h2 em,h3 em{font-weight:500}
strong{font-weight:500;color:var(--ivory)}
.kicker{display:flex;align-items:center;gap:14px;margin:0 0 var(--space-5);font-family:var(--font-body);font-weight:500;font-size:var(--step--2);line-height:1.2;letter-spacing:var(--tracking-caps);text-transform:uppercase;color:var(--gold)}
.kicker::before{content:"";width:32px;height:1px;background:var(--gold-grad);flex:none}
.center .kicker,.kicker--center{justify-content:center}
.center .kicker::after,.kicker--center::after{content:"";width:32px;height:1px;background:var(--gold-grad);flex:none}
.eyebrow{font-family:var(--font-body);font-weight:500;font-size:var(--step--2);letter-spacing:var(--tracking-wide);text-transform:uppercase;color:var(--mute)}
.lede{font-size:var(--step-1);line-height:1.6;color:var(--stone);max-width:60ch}
.prose{max-width:68ch;color:var(--stone)}
.prose>*+*{margin-top:1em}
.prose h3,.prose h4{color:var(--ivory);margin-top:1.6em}
.prose a{color:var(--gold-hi);text-decoration:underline;text-decoration-color:var(--gold-deep)}
.prose a:hover{text-decoration-color:var(--gold-hi)}
.prose ul{padding-left:1.1em}
.prose li::marker{color:var(--gold)}
.num{font-variant-numeric:lining-nums tabular-nums}
.small{font-size:var(--step--1)}
.fine{font-size:var(--step--2);color:var(--mute);line-height:1.55}
.muted{color:var(--mute)}
.stone-text{color:var(--stone)}
.gold{color:var(--gold)}
.gold-text{background:var(--gold-grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.quote{font-family:var(--font-display);font-style:italic;font-weight:500;font-size:var(--step-3);line-height:1.25;color:var(--ivory);max-width:30ch;text-wrap:balance}
.cite{font-family:var(--font-body);font-weight:400;font-size:.62em;line-height:0;vertical-align:super;margin-left:1px}
.cite a{color:var(--mute);text-decoration:none;padding:0 2px}
.cite a:hover{color:var(--gold-hi)}
.lc{text-transform:none}
.term{font-style:italic}
.heb{font-family:var(--font-hebrew);font-size:1.15em}

/* ---------- layout ---------- */
.container{width:100%;max-width:calc(var(--wrap) + 2 * var(--gutter));margin-inline:auto;padding-inline:var(--gutter)}
.container--narrow{max-width:calc(var(--wrap-narrow) + 2 * var(--gutter))}
.container--wide{max-width:calc(var(--wrap-wide) + 2 * var(--gutter))}
.section{position:relative;padding-block:var(--section-pad);border-top:1px solid var(--line)}
.section--alt{background:var(--ink-2)}
.section--tight{padding-block:calc(var(--section-pad) * .55)}
.section--flush{border-top:0}
.section-head{display:grid;gap:var(--space-4);margin-bottom:clamp(36px,4vw,64px);max-width:62ch}
.section-head.center{margin-inline:auto;text-align:center;justify-items:center}
.section-head .lede{margin-top:var(--space-1)}
.grid{display:grid;gap:var(--grid-gap,clamp(16px,2.4vw,32px));grid-template-columns:repeat(var(--cols,1),minmax(0,1fr))}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(min(var(--min,260px),100%),1fr))}
@media (min-width:640px){.grid--2,.grid--4{--cols:2}.grid--3{--cols:2}}
@media (min-width:980px){.grid--3{--cols:3}.grid--4{--cols:4}}
.split{display:grid;gap:clamp(32px,6vw,96px);align-items:center}
@media (min-width:900px){.split{grid-template-columns:minmax(0,5fr) minmax(0,7fr)}.split--even{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}.split--reverse>:first-child{order:2}}
.split>*,.grid>*{min-width:0}
.stack{display:flex;flex-direction:column;gap:var(--gap,var(--space-4))}
.cluster{display:flex;flex-wrap:wrap;align-items:center;gap:var(--gap,var(--space-3))}
.center{text-align:center;margin-inline:auto}
.center .lede{margin-inline:auto}
.full-bleed{width:100vw;margin-inline:calc(50% - 50vw)}
.divider{height:1px;border:0;margin:var(--space-7) 0;background:linear-gradient(90deg,transparent,var(--line-2),transparent)}
.hairline{border:1px solid var(--line)}

/* ---------- buttons ---------- */
.btn{--bg:var(--gold);--fg:var(--ink);--bd:var(--gold);position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:48px;padding:14px 26px;border:1px solid var(--bd);border-radius:var(--radius-xs);background:var(--bg);color:var(--fg);font-family:var(--font-body);font-weight:500;font-size:var(--step--2);letter-spacing:var(--tracking-wide);text-transform:uppercase;line-height:1;text-decoration:none;cursor:pointer;overflow:hidden;isolation:isolate;transition:background-color var(--dur-2) var(--ease-out),color var(--dur-2) var(--ease-out),border-color var(--dur-2) var(--ease-out),box-shadow var(--dur-3) var(--ease-out)}
.btn::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.45) 50%,transparent 70%);transform:translateX(-120%);transition:transform var(--dur-4) var(--ease-lux)}
.btn:hover{--bg:var(--gold-hi);--bd:var(--gold-hi);color:var(--ink);box-shadow:var(--glow)}
.btn:hover::after{transform:translateX(120%)}
.btn--ghost{--bg:transparent;--fg:var(--gold);--bd:var(--line-2)}
.btn--ghost::after{background:linear-gradient(110deg,transparent 30%,rgba(226,199,186,.18) 50%,transparent 70%)}
.btn--ghost:hover{--bg:var(--gold-veil);--bd:var(--gold);color:var(--gold-hi)}
.btn--link{--bg:transparent;--bd:transparent;--fg:var(--gold);padding-inline:0;min-height:0}
.btn--link::after{display:none}
.btn--link::before{content:"";position:absolute;left:0;right:22px;bottom:8px;height:1px;background:currentColor;transform:scaleX(.35);transform-origin:left;transition:transform var(--dur-3) var(--ease-lux)}
.btn--link:hover{--bg:transparent;--bd:transparent;box-shadow:none;color:var(--gold-hi)}
.btn--link:hover::before{transform:scaleX(1)}
.btn .arrow{display:inline-block;transition:transform var(--dur-3) var(--ease-lux)}
.btn:hover .arrow{transform:translateX(4px)}
.btn--sm{min-height:38px;padding:10px 16px}
.btn--block{display:flex;width:100%}
.icon-btn{display:inline-grid;place-items:center;width:44px;height:44px;padding:0;border:1px solid var(--line-2);border-radius:50%;background:transparent;color:var(--gold);cursor:pointer;transition:border-color var(--dur-2),background-color var(--dur-2),color var(--dur-2),opacity var(--dur-2)}
.icon-btn:hover{border-color:var(--gold);background:var(--gold-veil);color:var(--gold-hi)}
.icon-btn:disabled{opacity:.35;cursor:default;border-color:var(--line)}
.icon-btn svg{width:18px;height:18px}
.badge{display:inline-flex;align-items:center;gap:6px;padding:5px 9px 4px;border:1px solid var(--line-2);border-radius:var(--radius-xs);font-family:var(--font-body);font-weight:500;font-size:var(--step--2);letter-spacing:.12em;text-transform:uppercase;line-height:1;color:var(--gold);white-space:nowrap}
.badge--gold{background:var(--gold);border-color:var(--gold);color:var(--ink)}

/* ---------- header ---------- */
.skip-link{position:absolute;left:16px;top:-60px;z-index:100;padding:10px 14px;background:var(--gold);color:var(--ink);text-decoration:none;font-weight:500;border-radius:var(--radius-xs);transition:top var(--dur-2)}
.skip-link:focus{top:12px}
.site-header{position:sticky;top:0;z-index:var(--z-header);height:var(--header-h);border-bottom:1px solid transparent;background:rgba(0,0,0,.55);-webkit-backdrop-filter:blur(14px) saturate(1.2);backdrop-filter:blur(14px) saturate(1.2);transition:background-color var(--dur-3) var(--ease-out),border-color var(--dur-3) var(--ease-out)}
.site-header.is-scrolled,.site-header.is-open{background:rgba(0,0,0,.9);border-bottom-color:var(--line)}
.site-header>.container{height:100%;display:flex;align-items:center;gap:clamp(16px,2.4vw,36px)}
.brand{display:block;flex:none;text-decoration:none;line-height:0}
.mark{position:relative;display:block}
.mark>img:first-child{display:block;width:100%;height:auto}
.mark .stone{position:absolute;left:49.1558%;top:42.8315%;width:13.2212%;aspect-ratio:1;border-radius:50%;overflow:hidden;background:#000}
.mark .stone>*{width:100%;height:100%;object-fit:cover;display:block}
.brand .mark{width:96px}
.nav{display:flex;align-items:center;gap:clamp(16px,2vw,32px);margin-left:auto}
.nav a{position:relative;padding-block:8px;color:var(--stone);text-decoration:none;font-weight:400;font-size:var(--step--1);letter-spacing:.06em;transition:color var(--dur-2)}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:2px;height:1px;background:var(--gold-grad);transform:scaleX(0);transition:transform var(--dur-3) var(--ease-lux)}
.nav a:hover,.nav a[aria-current="page"]{color:var(--ivory)}
.nav a:hover::after,.nav a[aria-current="page"]::after{transform:scaleX(1)}
.lang-switch{display:inline-flex;flex:none;padding:3px;border:1px solid var(--line-2);border-radius:var(--radius-pill)}
.lang-switch button{min-width:40px;min-height:32px;padding:0 10px;border:0;border-radius:var(--radius-pill);background:transparent;color:var(--stone);font-family:var(--font-body);font-weight:500;font-size:var(--step--2);letter-spacing:.16em;cursor:pointer;transition:background-color var(--dur-2),color var(--dur-2)}
.lang-switch button:hover{color:var(--gold-hi)}
.lang-switch button[aria-pressed="true"]{background:var(--gold);color:var(--ink)}
.nav-toggle{display:none;position:relative;width:44px;height:44px;flex:none;padding:0;border:1px solid var(--line-2);border-radius:50%;background:transparent;cursor:pointer}
.nav-toggle span{position:absolute;left:13px;right:13px;height:1px;background:var(--gold);transition:transform var(--dur-3) var(--ease-lux),opacity var(--dur-2)}
.nav-toggle span:nth-child(1){top:17px}.nav-toggle span:nth-child(2){top:22px}.nav-toggle span:nth-child(3){top:27px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}
@media (max-width:1023.98px){
  .nav-toggle{display:inline-block}
  .lang-switch{margin-left:auto}
  .nav{position:fixed;z-index:var(--z-menu);top:var(--header-h);left:0;right:0;height:calc(100dvh - var(--header-h));margin:0;padding:clamp(32px,8vh,72px) var(--gutter) 48px;flex-direction:column;align-items:flex-start;gap:4px;overflow-y:auto;background:radial-gradient(120% 60% at 50% 0%,rgba(226,199,186,.09),transparent 60%),var(--ink);opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity var(--dur-3) var(--ease-out),transform var(--dur-3) var(--ease-out),visibility 0s linear var(--dur-3)}
  .site-header.is-open .nav{opacity:1;visibility:visible;transform:none;transition-delay:0s}
  .nav a{width:100%;padding-block:14px;border-bottom:1px solid var(--line);font-family:var(--font-display);font-weight:500;font-size:var(--step-3);letter-spacing:0;color:var(--ivory)}
  .nav a::after{display:none}
  .nav a[aria-current="page"]{color:var(--gold-hi)}
}
html.menu-open{overflow:hidden}
html.menu-open .chat-fab{opacity:0;pointer-events:none}

/* ---------- hero ---------- */
.hero{position:relative;padding-block:clamp(56px,9vw,128px) clamp(64px,8vw,120px);text-align:center;overflow:clip;isolation:isolate}
.hero::before{content:"";position:absolute;z-index:-1;left:50%;top:-10%;width:min(1100px,140vw);aspect-ratio:1.6;transform:translateX(-50%);background:radial-gradient(closest-side,rgba(226,199,186,.13),rgba(226,199,186,.04) 55%,transparent 75%);pointer-events:none}
.hero::after{content:"";position:absolute;z-index:-1;inset:auto 0 0;height:1px;background:linear-gradient(90deg,transparent,var(--line-2),transparent)}
.hero__mark{width:min(680px,100%);margin-inline:auto}
.hero__descr{display:flex;align-items:center;justify-content:center;gap:16px;margin:clamp(14px,2.4vw,26px) auto 0;font-family:var(--font-display);font-weight:600;font-size:clamp(11px,1.5vw,15px);line-height:1;letter-spacing:.34em;text-transform:uppercase;color:var(--gold)}
.hero__descr::before,.hero__descr::after{content:"";width:clamp(24px,5vw,64px);height:1px;background:var(--gold-grad)}
.hero__title{max-width:18ch;margin:clamp(36px,6vw,72px) auto 0;font-size:var(--step-5);line-height:1.04}
.hero__lede{margin:var(--space-5) auto 0;text-align:center}
.hero__ctas{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--space-3);margin-top:clamp(28px,3vw,40px)}
.hero__scroll{display:block;width:1px;height:56px;margin:clamp(40px,6vw,72px) auto 0;background:linear-gradient(var(--gold),transparent);transform-origin:top;animation:noga-scrollcue 2.6s var(--ease-in-out) infinite}
@keyframes noga-scrollcue{0%{transform:scaleY(0);opacity:0}30%{opacity:1}60%{transform:scaleY(1);opacity:1}100%{transform:scaleY(1);opacity:0}}

/* ---------- cards & stats ---------- */
.card{position:relative;display:flex;flex-direction:column;min-width:0;border:1px solid var(--line);border-radius:var(--radius-sm);background:linear-gradient(180deg,var(--surface),var(--ink-2));overflow:hidden;transition:border-color var(--dur-3) var(--ease-out),transform var(--dur-3) var(--ease-lux),box-shadow var(--dur-3) var(--ease-out)}
.card__media{position:relative;aspect-ratio:var(--ratio,1);background:#000;overflow:hidden}
.card__media>img,.card__media>video,.card__media>svg{width:100%;height:100%;object-fit:cover;transition:transform var(--dur-5) var(--ease-lux)}
.card__media--contain>img,.card__media--contain>svg{object-fit:contain;padding:8%}
.card__body{display:flex;flex-direction:column;gap:var(--space-3);padding:clamp(20px,2.4vw,30px);flex:1}
.card__kicker{font-family:var(--font-body);font-weight:500;font-size:var(--step--2);letter-spacing:var(--tracking-caps);text-transform:uppercase;color:var(--gold)}
.card__title{font-family:var(--font-display);font-weight:500;font-size:var(--step-2);line-height:1.2;color:var(--ivory)}
.card__text{color:var(--stone);font-size:var(--step--1);line-height:1.65}
.card__meta{display:flex;flex-wrap:wrap;gap:6px 12px;align-items:center;margin-top:auto;padding-top:var(--space-3);border-top:1px solid var(--line);font-size:var(--step--1);color:var(--mute)}
.card--link{cursor:pointer}
.card--link:hover,.card--link:focus-within{border-color:var(--gold-lo);transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card--link:hover .card__media>*{transform:scale(1.04)}
.card--link a.card__cover::after{content:"";position:absolute;inset:0;z-index:1}
.card--link a.card__cover{text-decoration:none}
.card--feature{border-color:var(--gold-lo);background:linear-gradient(180deg,rgba(226,199,186,.08),rgba(226,199,186,0) 60%),var(--surface)}
.card--flat{background:transparent;border-radius:0;border-width:1px 0 0}
.stat{display:grid;gap:var(--space-2);padding-top:var(--space-4);border-top:1px solid var(--line-2)}
.stat__value{font-family:var(--font-display);font-weight:500;font-size:var(--step-5);line-height:1;color:var(--gold-hi);font-variant-numeric:lining-nums tabular-nums;white-space:nowrap}
.stat__label{font-size:var(--step--1);color:var(--stone);max-width:28ch}

/* ---------- tabs ---------- */
.tabs__list{position:relative;display:flex;gap:clamp(4px,1.5vw,28px);overflow-x:auto;scrollbar-width:none;border-bottom:1px solid var(--line);margin-bottom:clamp(24px,3vw,40px)}
.tabs__list::-webkit-scrollbar{display:none}
.tabs__tab{position:relative;flex:none;min-height:48px;padding:12px 6px;border:0;background:transparent;color:var(--mute);font-family:var(--font-body);font-weight:500;font-size:var(--step--2);letter-spacing:var(--tracking-wide);text-transform:uppercase;cursor:pointer;transition:color var(--dur-2)}
.tabs__tab::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;background:var(--gold-grad);transform:scaleX(0);transition:transform var(--dur-3) var(--ease-lux)}
.tabs__tab:hover{color:var(--ivory)}
.tabs__tab[aria-selected="true"]{color:var(--gold-hi)}
.tabs__tab[aria-selected="true"]::after{transform:scaleX(1)}
.tabs__tab:focus-visible{outline-offset:-2px}
.tabs__panel[hidden]{display:none}
.tabs__panel{animation:noga-fade-up var(--dur-3) var(--ease-out)}
@keyframes noga-fade-up{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---------- level slider (range) ---------- */
.level-slider{--thumb:22px;display:grid;gap:clamp(20px,3vw,32px)}
.level-stage{position:relative;display:grid;place-items:center}
.level-stage>.level-item{grid-area:1/1;width:100%;opacity:0;visibility:hidden;transform:scale(.985);transition:opacity var(--dur-3) var(--ease-out),transform var(--dur-3) var(--ease-out),visibility 0s linear var(--dur-3)}
.level-stage>.level-item.is-active{opacity:1;visibility:visible;transform:none;transition-delay:0s}
.level-stage img{margin-inline:auto}
.level-text{display:none}
.level-text.is-active{display:block;animation:noga-fade-up var(--dur-3) var(--ease-out)}
.level-controls{display:grid;gap:10px}
.range{--p:0%;width:100%;height:var(--thumb);margin:0;background:transparent;-webkit-appearance:none;appearance:none;cursor:pointer}
.range:focus-visible{outline:none}
.range::-webkit-slider-runnable-track{height:2px;border-radius:2px;background:linear-gradient(90deg,var(--gold) 0 var(--p),var(--line-2) var(--p) 100%)}
.range::-moz-range-track{height:2px;border-radius:2px;background:var(--line-2)}
.range::-moz-range-progress{height:2px;background:var(--gold)}
.range::-webkit-slider-thumb{-webkit-appearance:none;appearance:none;width:var(--thumb);height:var(--thumb);margin-top:calc(1px - var(--thumb) / 2);border:1px solid var(--gold-hi);border-radius:3px;background:var(--gold-grad);transform:rotate(45deg) scale(.72);box-shadow:0 0 0 6px rgba(226,199,186,0);transition:box-shadow var(--dur-2),transform var(--dur-2) var(--ease-lux)}
.range::-moz-range-thumb{width:calc(var(--thumb) * .72);height:calc(var(--thumb) * .72);border:1px solid var(--gold-hi);border-radius:3px;background:var(--gold);transform:rotate(45deg)}
.range:hover::-webkit-slider-thumb{transform:rotate(45deg) scale(.82)}
.range:focus-visible::-webkit-slider-thumb{box-shadow:0 0 0 4px var(--ink),0 0 0 6px var(--gold-hi)}
.range:focus-visible::-moz-range-thumb{box-shadow:0 0 0 4px var(--ink),0 0 0 6px var(--gold-hi)}
.range-labels{position:relative;height:28px;margin:0;padding:0;list-style:none}
.range-labels button,.range-labels li{position:absolute;top:0;left:calc(var(--thumb) / 2 + (100% - var(--thumb)) * var(--i,0) / max(var(--n,2) - 1,1));transform:translateX(-50%);min-width:28px;min-height:28px;padding:2px 4px;border:0;background:transparent;color:var(--mute);font-family:var(--font-display);font-weight:500;font-size:var(--step-1);line-height:1;font-variant-numeric:lining-nums;cursor:pointer;transition:color var(--dur-2),transform var(--dur-2) var(--ease-lux)}
.range-labels button:hover{color:var(--ivory)}
.range-labels .is-active{color:var(--gold-hi);transform:translateX(-50%) translateY(-2px)}
.range-groups{display:flex;justify-content:space-between;gap:8px;font-size:var(--step--2);letter-spacing:var(--tracking-wide);text-transform:uppercase;color:var(--mute)}

/* ---------- compare (before / after) ---------- */
.compare{--pos:50%;position:relative;aspect-ratio:var(--ratio,1);overflow:hidden;border-radius:var(--radius-sm);background:#000;touch-action:pan-y;user-select:none;-webkit-user-select:none;cursor:ew-resize}
.compare>.compare__before,.compare>.compare__after{position:absolute;inset:0}
.compare__before>*,.compare__after>*,.compare>img{width:100%;height:100%;object-fit:cover;pointer-events:none}
.compare__after{clip-path:inset(0 0 0 var(--pos))}
.compare__handle{position:absolute;top:0;bottom:0;left:var(--pos);width:44px;margin-left:-22px;padding:0;border:0;background:transparent;cursor:ew-resize;touch-action:none}
.compare__handle::before{content:"";position:absolute;top:0;bottom:0;left:50%;width:1px;background:linear-gradient(transparent,var(--gold-hi) 15%,var(--gold-hi) 85%,transparent)}
.compare__handle::after{content:"";position:absolute;top:50%;left:50%;width:34px;height:34px;border:1px solid var(--gold-hi);border-radius:50%;background:rgba(0,0,0,.7) url("../svg/icon-compare.svg") center/18px no-repeat;transform:translate(-50%,-50%);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);transition:transform var(--dur-2) var(--ease-lux)}
.compare.is-dragging .compare__handle::after,.compare__handle:hover::after{transform:translate(-50%,-50%) scale(1.1)}
.compare__handle:focus-visible{outline:none}
.compare__handle:focus-visible::after{box-shadow:0 0 0 3px var(--ink),0 0 0 5px var(--gold-hi)}
.compare__label{position:absolute;top:12px;padding:6px 10px;border-radius:var(--radius-xs);background:rgba(0,0,0,.72);font-weight:500;font-size:var(--step--2);letter-spacing:var(--tracking-wide);text-transform:uppercase;color:var(--ivory);pointer-events:none}
.compare__label--before{left:12px}
.compare__label--after{right:12px}

/* ---------- carousel ---------- */
.carousel{position:relative}
.carousel__track{display:grid;grid-auto-flow:column;grid-auto-columns:var(--item,min(78%,340px));gap:clamp(14px,2vw,28px);overflow-x:auto;overscroll-behavior-x:contain;scroll-snap-type:x mandatory;scroll-padding-inline:var(--gutter);padding:4px var(--gutter) 18px;margin-inline:calc(-1 * var(--gutter));scrollbar-width:thin;scrollbar-color:var(--line-2) transparent}
.carousel__track::-webkit-scrollbar{height:4px}
.carousel__track::-webkit-scrollbar-thumb{background:var(--line-2);border-radius:4px}
.carousel__track:focus-visible{outline-offset:-2px}
.carousel__item{scroll-snap-align:start;min-width:0}
.carousel__nav{display:flex;align-items:center;justify-content:flex-end;gap:10px;margin-top:var(--space-4)}
.carousel__count{margin-right:auto;font-size:var(--step--1);color:var(--mute);font-variant-numeric:lining-nums tabular-nums}

/* ---------- accordion ---------- */
.accordion{display:grid;max-width:880px}
.accordion__item{border-top:1px solid var(--line)}
.accordion__item:last-child{border-bottom:1px solid var(--line)}
.accordion__item>summary{display:flex;justify-content:space-between;align-items:baseline;gap:20px;padding-block:clamp(18px,2.2vw,26px);list-style:none;cursor:pointer;font-family:var(--font-display);font-weight:500;font-size:var(--step-2);line-height:1.25;color:var(--ivory);transition:color var(--dur-2)}
.accordion__item>summary::-webkit-details-marker{display:none}
.accordion__item>summary::after{content:"";flex:none;width:14px;height:14px;margin-top:4px;background:linear-gradient(var(--gold),var(--gold)) center/14px 1px no-repeat,linear-gradient(var(--gold),var(--gold)) center/1px 14px no-repeat;transition:transform var(--dur-3) var(--ease-lux)}
.accordion__item[open]>summary::after{transform:rotate(135deg)}
.accordion__item>summary:hover{color:var(--gold-hi)}
.accordion__item::details-content{block-size:0;overflow:hidden;transition:block-size var(--dur-3) var(--ease-out),content-visibility var(--dur-3) allow-discrete}
.accordion__item[open]::details-content{block-size:auto}
.accordion__body{display:grid;gap:var(--space-3);padding-bottom:clamp(20px,2.4vw,30px);color:var(--stone);max-width:68ch}

/* ---------- diagram, hotspots, tooltips ---------- */
.diagram{position:relative;margin:0}
.diagram__svg,.diagram>svg,.diagram>img{width:100%;height:auto}
.diagram svg .part{transition:opacity var(--dur-3) var(--ease-out)}
.diagram svg .part .area{transition:fill-opacity var(--dur-3) var(--ease-out)}
.diagram svg .part .edge{transition:stroke var(--dur-2),stroke-opacity var(--dur-2),stroke-width var(--dur-2)}
.diagram[data-active] svg .part:not(.is-hl){opacity:.32}
.diagram svg .part.is-hl .area{fill-opacity:.2}
.diagram svg .part.is-hl .edge{stroke:var(--gold-hi);stroke-opacity:1;stroke-width:2.6}
.hotspot{position:absolute;left:var(--x,50%);top:var(--y,50%);z-index:2;width:36px;height:36px;margin:-18px 0 0 -18px;padding:0;border:0;border-radius:50%;background:transparent;cursor:pointer}
.hotspot__dot{position:absolute;inset:10px;border-radius:50%;background:var(--gold);box-shadow:0 0 0 1px rgba(0,0,0,.8),0 0 14px rgba(246,233,226,.6);transition:transform var(--dur-2) var(--ease-lux),background-color var(--dur-2)}
.hotspot__dot::after{content:"";position:absolute;inset:-6px;border:1px solid var(--gold);border-radius:50%;opacity:0;animation:noga-ping 2.8s var(--ease-out) infinite}
.hotspot:hover .hotspot__dot,.hotspot[aria-expanded="true"] .hotspot__dot{transform:scale(1.25);background:var(--gold-hi)}
.hotspot:focus-visible{outline:none}
.hotspot:focus-visible .hotspot__dot{box-shadow:0 0 0 3px var(--ink),0 0 0 5px var(--gold-hi)}
@keyframes noga-ping{0%{transform:scale(.6);opacity:.9}70%,100%{transform:scale(1.6);opacity:0}}
.hotspot__tip,.tooltip{position:absolute;left:50%;bottom:calc(100% + 10px);z-index:3;width:max-content;max-width:min(260px,70vw);padding:12px 14px;border:1px solid var(--line-2);border-radius:var(--radius-sm);background:rgba(17,16,13,.97);box-shadow:var(--shadow);color:var(--ivory);font-family:var(--font-body);font-weight:300;font-size:var(--step--1);line-height:1.5;text-align:left;pointer-events:none;opacity:0;visibility:hidden;transform:translate(-50%,6px);transition:opacity var(--dur-2) var(--ease-out),transform var(--dur-2) var(--ease-out),visibility 0s linear var(--dur-2)}
.hotspot__tip strong{display:block;margin-bottom:2px;font-family:var(--font-display);font-weight:500;font-size:var(--step-1);color:var(--gold-hi)}
.hotspot:hover .hotspot__tip,.hotspot:focus-visible .hotspot__tip,.hotspot[aria-expanded="true"] .hotspot__tip,[data-tip]:hover>.tooltip,[data-tip]:focus-visible>.tooltip{opacity:1;visibility:visible;transform:translate(-50%,0);transition-delay:0s}
.hotspot__tip--below{bottom:auto;top:calc(100% + 10px)}
.hotspot__tip--left{left:auto;right:calc(100% - 4px);transform:translate(0,6px)}
.hotspot__tip--right{left:calc(100% - 4px);transform:translate(0,6px)}
.hotspot:hover .hotspot__tip--left,.hotspot:hover .hotspot__tip--right,.hotspot:focus-visible .hotspot__tip--left,.hotspot:focus-visible .hotspot__tip--right,.hotspot[aria-expanded="true"] .hotspot__tip--left,.hotspot[aria-expanded="true"] .hotspot__tip--right{transform:none}
[data-tip]{position:relative}
@media (max-width:639.98px){
  /* small screens: the tip moves out of the figure; .diagram-note shows the active part */
  .hotspot__tip{display:none}
  .hotspot{width:32px;height:32px;margin:-16px 0 0 -16px}
  .hotspot__dot{inset:9px}
}
.diagram-legend{display:flex;flex-wrap:wrap;gap:8px;margin-top:var(--space-5);padding:0;list-style:none}
.diagram-legend button{min-height:36px;padding:8px 12px;border:1px solid var(--line-2);border-radius:var(--radius-pill);background:transparent;color:var(--stone);font-size:var(--step--1);cursor:pointer;transition:border-color var(--dur-2),color var(--dur-2),background-color var(--dur-2)}
.diagram-legend button:hover{border-color:var(--gold-lo);color:var(--ivory)}
.diagram-legend button[aria-pressed="true"]{border-color:var(--gold);background:var(--gold-veil-2);color:var(--gold-hi)}
.diagram-note{min-height:3.4em;margin-top:var(--space-4);color:var(--stone)}
.legend-dot{display:inline-block;width:10px;height:10px;border-radius:50%;vertical-align:middle;margin-right:8px}

/* light-path svg inline: rays draw when visible */
.js .lightpath:not(.is-visible) .ray{animation-play-state:paused!important}

/* ---------- media ---------- */
.figure{margin:0}
.figure figcaption{margin-top:var(--space-3);font-size:var(--step--2);color:var(--mute);letter-spacing:.02em}
.media-frame{position:relative;aspect-ratio:var(--ratio,1);overflow:hidden;background:#000;border-radius:var(--radius-sm)}
.media-frame--round{border-radius:50%}
.media-frame--wide{--ratio:16/9}
.media-frame>img,.media-frame>video{width:100%;height:100%;object-fit:cover}
.illus{display:grid;place-items:center;padding:clamp(12px,3vw,28px);border:1px solid var(--line);border-radius:var(--radius-sm);background:radial-gradient(80% 80% at 50% 40%,#140712,var(--ink-2))}
.icon{width:var(--icon,40px);height:var(--icon,40px);color:var(--gold)}

/* ---------- chat assistant ---------- */
.chat-fab{position:fixed;right:max(16px,env(safe-area-inset-right));bottom:max(16px,env(safe-area-inset-bottom));z-index:var(--z-chat);display:inline-flex;align-items:center;gap:10px;min-height:52px;padding:0 20px 0 16px;border:1px solid var(--gold-lo);border-radius:var(--radius-pill);background:rgba(17,16,13,.92);color:var(--gold-hi);font-weight:500;font-size:var(--step--2);letter-spacing:var(--tracking-wide);text-transform:uppercase;box-shadow:var(--shadow-lg);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);cursor:pointer;transition:transform var(--dur-3) var(--ease-lux),border-color var(--dur-2),box-shadow var(--dur-3),opacity var(--dur-2)}
.chat-fab svg{width:22px;height:22px;flex:none}
.chat-fab:hover{border-color:var(--gold);box-shadow:var(--glow),var(--shadow-lg);transform:translateY(-2px)}
.chat-fab[aria-expanded="true"]{opacity:0;pointer-events:none;transform:translateY(8px)}
.chat-panel{position:fixed;right:max(16px,env(safe-area-inset-right));bottom:max(16px,env(safe-area-inset-bottom));z-index:var(--z-chat);display:flex;flex-direction:column;width:min(400px,calc(100vw - 32px));height:min(600px,calc(100dvh - 32px));border:1px solid var(--line-2);border-radius:var(--radius-lg);background:linear-gradient(180deg,#14120e,#0a0907);box-shadow:var(--shadow-lg),0 0 0 1px rgba(0,0,0,.6);overflow:hidden;opacity:0;visibility:hidden;transform:translateY(16px) scale(.98);transform-origin:bottom right;transition:opacity var(--dur-3) var(--ease-out),transform var(--dur-3) var(--ease-lux),visibility 0s linear var(--dur-3)}
.chat-panel.is-open{opacity:1;visibility:visible;transform:none;transition-delay:0s}
.chat-panel__head{display:flex;align-items:center;gap:12px;padding:16px 16px 14px 20px;border-bottom:1px solid var(--line)}
.chat-panel__title{font-family:var(--font-display);font-weight:500;font-size:var(--step-2);line-height:1.1}
.chat-panel__sub{font-size:var(--step--2);color:var(--mute)}
.chat-panel__head .icon-btn{margin-left:auto;width:38px;height:38px}
.chat-status{display:inline-block;width:7px;height:7px;margin-right:6px;border-radius:50%;background:var(--gold);box-shadow:0 0 8px var(--gold)}
.chat-log{flex:1;display:flex;flex-direction:column;gap:12px;padding:20px;overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:var(--line-2) transparent}
.msg{max-width:86%;padding:11px 14px;border-radius:14px;font-size:var(--step--1);line-height:1.55;animation:noga-fade-up var(--dur-3) var(--ease-out);overflow-wrap:anywhere;white-space:pre-line}
.msg--bot{align-self:flex-start;border:1px solid var(--line);border-bottom-left-radius:4px;background:var(--surface-2);color:var(--ivory)}
.msg--user{align-self:flex-end;border-bottom-right-radius:4px;background:var(--gold);color:var(--ink);font-weight:400}
.chat-typing{display:inline-flex;gap:4px;align-self:flex-start;padding:14px;border:1px solid var(--line);border-radius:14px;background:var(--surface-2)}
.chat-typing i{width:5px;height:5px;border-radius:50%;background:var(--gold);animation:noga-dots 1.2s infinite ease-in-out}
.chat-typing i:nth-child(2){animation-delay:.15s}.chat-typing i:nth-child(3){animation-delay:.3s}
@keyframes noga-dots{0%,80%,100%{opacity:.25;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}
.chat-chips{display:flex;flex-wrap:wrap;gap:6px;padding:0 20px 12px}
.chat-chips button{padding:7px 11px;border:1px solid var(--line-2);border-radius:var(--radius-pill);background:transparent;color:var(--stone);font-size:var(--step--2);cursor:pointer}
.chat-chips button:hover{border-color:var(--gold-lo);color:var(--gold-hi)}
.chat-form{display:flex;gap:8px;padding:12px;border-top:1px solid var(--line);background:rgba(0,0,0,.25)}
.chat-form textarea,.chat-form input{flex:1;min-width:0;min-height:44px;max-height:120px;padding:11px 14px;border:1px solid var(--line-2);border-radius:12px;background:var(--ink);color:var(--ivory);font-size:16px;line-height:1.4;resize:none}
.chat-form textarea::placeholder,.chat-form input::placeholder{color:var(--mute)}
.chat-form textarea:focus-visible,.chat-form input:focus-visible{outline:none;border-color:var(--gold)}
.chat-form .icon-btn{flex:none;background:var(--gold);border-color:var(--gold);color:var(--ink)}
.chat-form .icon-btn:hover{background:var(--gold-hi)}
.chat-disclaimer{padding:0 16px 10px;font-size:11px;line-height:1.4;color:var(--mute);background:rgba(0,0,0,.25)}
@media (max-width:520px){
  .chat-panel{right:0;left:0;bottom:0;width:100%;height:min(88dvh,640px);border-radius:var(--radius-lg) var(--radius-lg) 0 0}
  .chat-fab{padding:0;width:52px;justify-content:center}
  .chat-fab .chat-fab__label{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}
}

/* ---------- footer ---------- */
.site-footer{padding-block:clamp(56px,7vw,96px) 40px;border-top:1px solid var(--line);background:linear-gradient(180deg,var(--ink),#030302);font-size:var(--step--1);color:var(--stone)}
.footer-grid{display:grid;gap:clamp(32px,5vw,72px)}
@media (min-width:760px){.footer-grid{grid-template-columns:minmax(0,4fr) repeat(2,minmax(0,2fr)) minmax(0,3fr)}}
.footer-grid>*{min-width:0}
.footer-brand .mark{width:120px;margin-bottom:var(--space-4)}
.footer-title{margin:0 0 var(--space-4);font-family:var(--font-body);font-weight:500;font-size:var(--step--2);letter-spacing:var(--tracking-caps);text-transform:uppercase;color:var(--gold)}
.footer-links{display:grid;gap:10px;margin:0;padding:0;list-style:none}
.footer-links a{color:var(--stone);text-decoration:none;transition:color var(--dur-2)}
.footer-links a:hover{color:var(--gold-hi)}
.sources{display:grid;gap:7px;margin:0;padding-left:22px;font-size:var(--step--2);color:var(--mute)}
.sources a{color:var(--stone);text-decoration:none;border-bottom:1px solid var(--line-2);overflow-wrap:anywhere}
.sources a:hover{color:var(--gold-hi)}
.legal{display:flex;flex-wrap:wrap;gap:8px 24px;margin-top:clamp(36px,5vw,56px);padding-top:var(--space-5);border-top:1px solid var(--line);font-size:var(--step--2);color:var(--mute)}

/* ---------- scroll reveal ---------- */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity var(--dur-4) var(--ease-out),transform var(--dur-5) var(--ease-lux);transition-delay:var(--d,0s)}
.js .reveal--fade{transform:none}
.js .reveal--scale{transform:scale(.97)}
.js .reveal.is-visible{opacity:1;transform:none}
.js .reveal.is-instant,.js .reveal-stagger.is-instant>*{transition:transform var(--dur-5) var(--ease-lux)}
.js .reveal-stagger>*{opacity:0;transform:translateY(16px);transition:opacity var(--dur-4) var(--ease-out),transform var(--dur-5) var(--ease-lux)}
.js .reveal-stagger.is-visible>*{opacity:1;transform:none}
.reveal-stagger.is-visible>:nth-child(2){transition-delay:.08s}.reveal-stagger.is-visible>:nth-child(3){transition-delay:.16s}
.reveal-stagger.is-visible>:nth-child(4){transition-delay:.24s}.reveal-stagger.is-visible>:nth-child(5){transition-delay:.32s}
.reveal-stagger.is-visible>:nth-child(6){transition-delay:.4s}.reveal-stagger.is-visible>:nth-child(n+7){transition-delay:.48s}

/* ---------- utilities ---------- */
.visually-hidden{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}
[hidden]{display:none!important}

/* ---------- reduced motion: everything still, nothing hidden ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;transition-duration:.001ms!important;transition-delay:0s!important;scroll-behavior:auto!important}
  .js .reveal,.js .reveal-stagger>*{opacity:1;transform:none}
  .hero__scroll,.hotspot__dot::after{animation:none!important;display:none}
  .lightpath .ray{animation:none!important;stroke-dashoffset:0}
  .btn::after{display:none}
}

/* ---------- print ---------- */
@media print{
  .site-header,.chat-fab,.chat-panel,.carousel__nav{display:none!important}
  body{background:#fff;color:#000}
}