/* ═══════════════════════════════════════════════════════════
       DESIGN TOKENS — AMR LUNA COLOUR PALETTE
    ═══════════════════════════════════════════════════════════ */
    :root {
        /* backgrounds */
        --black:         #0A0A0A;
        --surface:       #141414;
        --surface-mid:   #1C1C1C;
        --surface-card:  #2A2A2A;
  
        /* gold */
        --gold:          #B8966A;
        --gold-light:    #D4AE82;
        --gold-dim:      rgba(184,150,106,0.15);
        --gold-rule:     rgba(184,150,106,0.35);
  
        /* text — warm cream */
        --text-primary:  #F0EDE8;
        --text-secondary:#9A9A9A;
        --text-muted:    #707070;
  
        /* borders */
        --border:        rgba(240,237,232,0.08);
        --border-gold:   rgba(184,150,106,0.22);
  
        /* typography — Oxygen throughout */
        --serif: "Oxygen", system-ui, sans-serif;
        --sans:  "Oxygen", system-ui, sans-serif;
  
        /* typography scale — sized for Oxygen's metrics */
        --fs-micro:  0.68rem;   /* captions, overlines, cites   */
        --fs-small:  0.80rem;   /* secondary labels, footnotes  */
        --fs-body:   0.95rem;   /* body copy, list items        */
        --fs-lead:   1.05rem;   /* lead paragraphs              */
  
        /* product images */
        --img-hero:  url('images/amr-banner.jpg');
        --img-medii: url('images/Medii (12).jpg');
  
        /* layout */
        --max:        1100px;
        --pad:        clamp(1.6rem, 5.5vw, 4.5rem);
        --section-y:  clamp(5rem, 10vw, 9rem);
        --gap-block:  2.4rem;
      }
  
      /* ═══ RESET ══════════════════════════════════════════════ */
      *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
      html { scroll-behavior: smooth; }
      body {
        background: var(--black);
        color: var(--text-primary);
        font-family: var(--sans);
        font-weight: 300;
        font-size: 16px;
        line-height: 1.78;
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
        overflow-x: hidden;
      }
      a { color: inherit; text-decoration: none; }
      ul { list-style: none; padding: 0; }
  
      /* ═══ LAYOUT ═════════════════════════════════════════════ */
      .section {
        max-width: var(--max);
        margin: 0 auto;
        padding: var(--section-y) var(--pad);
      }
      .section-full {
        max-width: 1340px;
        margin: 0 auto;
        padding: var(--section-y) var(--pad);
      }
      .section-full--tight-bottom {
        padding-bottom: clamp(2rem, 4vw, 3rem);
      }
      .section-full--tight-top {
        padding-top: clamp(2rem, 4vw, 3rem);
      }

      /* John Curl — padding lives on .section-full inside #curl, not on #curl itself */
      #curl .section-full {
        padding-bottom: clamp(3rem, 6vw, 6rem);
      }
      .section-rule {
        height: 0.5px;
        background: var(--border);
        max-width: calc(100% - 2 * var(--pad));
        margin: 0 auto;
      }
  
      /* ═══ TYPOGRAPHY ═════════════════════════════════════════ */
      .overline {
        display: block;
        font-family: var(--sans);
        font-weight: 400;
        font-size: var(--fs-micro);
        letter-spacing: 0.22em;
        text-transform: uppercase;
        color: var(--gold);
        margin-bottom: 1.6rem;
      }
  
      h1 {
        font-family: var(--sans);
        font-weight: 300;
        font-size: clamp(2.6rem, 6.5vw, 5.2rem);
        line-height: 1.10;
        color: var(--text-primary);
        letter-spacing: -0.02em;
      }
      h1 em { font-style: normal; color: var(--gold-light); }
  
      h2 {
        font-family: var(--sans);
        font-weight: 300;
        font-size: clamp(1.8rem, 4vw, 3.0rem);
        line-height: 1.18;
        color: var(--text-primary);
        letter-spacing: -0.015em;
      }
      h2 em { font-style: normal; color: var(--gold-light); }
      h2 strong { font-weight: 700; }
  
      p {
        font-family: var(--sans);
        font-size: var(--fs-body);
        line-height: 1.80;
        margin-bottom: 1.2rem;
      }
      p:last-child { margin-bottom: 0; }
      p strong { font-weight: 400; color: var(--text-primary); }
      p em { font-style: italic; color: var(--gold-light); }
  
      .gold-rule {
        width: 36px;
        height: 0.5px;
        background: var(--gold);
        margin: 2.2rem 0;
      }
  
      /* ═══ BUTTONS ════════════════════════════════════════════ */
      .btn-primary {
        display: inline-block;
        font-family: var(--sans);
        font-weight: 400;
        font-size: var(--fs-micro);
        letter-spacing: 0.18em;
        text-transform: uppercase;
        color: var(--black);
        background: var(--gold);
        padding: 1rem 2.6rem;
        border: 0.5px solid var(--gold);
        cursor: pointer;
        transition: background 0.22s, color 0.22s, box-shadow 0.25s;
      }
      .btn-primary:hover {
        background: var(--gold-light);
        border-color: var(--gold-light);
        box-shadow: 0 0 14px rgba(184,150,106,0.32);
      }
  
      .btn-secondary {
        display: inline-block;
        font-family: var(--sans);
        font-weight: 400;
        font-size: var(--fs-micro);
        letter-spacing: 0.18em;
        text-transform: uppercase;
        color: var(--gold);
        border: 0.5px solid var(--gold);
        padding: 1rem 2.6rem;
        cursor: pointer;
        transition: background 0.22s, box-shadow 0.25s;
      }
      .btn-secondary:hover {
        background: var(--gold-dim);
        box-shadow: 0 0 10px rgba(184,150,106,0.15);
      }
  
      .btn-ghost {
        display: inline-block;
        font-family: var(--sans);
        font-weight: 400;
        font-size: var(--fs-micro);
        letter-spacing: 0.16em;
        text-transform: uppercase;
        color: var(--text-muted);
        border-bottom: 0.5px solid var(--text-muted);
        padding-bottom: 0.18rem;
        cursor: pointer;
        transition: color 0.2s, border-color 0.2s;
      }
      .btn-ghost:hover { color: var(--gold); border-color: var(--gold); }
  
      .btn-row {
        display: flex;
        flex-wrap: wrap;
        gap: 1rem;
        align-items: center;
        margin-top: 2.8rem;
      }
  
      .product-cta-link {
        display: inline-block;
        font-family: var(--sans);
        font-weight: 400;
        font-size: var(--fs-micro);
        letter-spacing: 0.14em;
        text-transform: uppercase;
        color: var(--gold);
        border-bottom: 0.5px solid var(--gold-rule);
        padding-bottom: 0.18rem;
        cursor: pointer;
        margin-top: 1.4rem;
        transition: border-color 0.2s, box-shadow 0.25s;
      }
      .product-cta-link:hover {
        border-color: var(--gold);
        box-shadow: 0 1px 0 0 var(--gold), 0 0 8px rgba(184,150,106,0.18);
      }
  
      /* ═══ HERO IMAGE ════════════════════════════════ */
      .hero-visual {
        position: absolute;
        inset: 0;
        background: var(--img-hero) center center / cover no-repeat;
        z-index: 0;
      }
      .hero-visual::after {
        content: '';
        position: absolute; inset: 0;
        background: linear-gradient(
          160deg,
          rgba(10,10,10,0.82) 0%,
          rgba(10,10,10,0.85) 55%,
          rgba(10,10,10,0.95) 100%
        );
      }
  
      /* ═══ ENGINEERING VISUAL ════════════════════════ */
      .engineering-visual {
        width: 100%;
        aspect-ratio: 16/9;
        background: var(--img-medii) center 100% / cover no-repeat;
        position: relative;
        margin: 4rem 0 0;
      }
      .engineering-visual::before {
        content: '';
        position: absolute; inset: 0;
        background: linear-gradient(180deg, transparent 50%, var(--black) 100%);
      }
      .engineering-visual-caption {
        position: absolute;
        bottom: 2rem; left: var(--pad);
        font-family: var(--sans);
        font-size: 0.58rem;
        letter-spacing: 0.18em;
        text-transform: uppercase;
        color: var(--text-muted);
      }
  
      /* ═══ NAV ════════════════════════════════════════════════ */
      nav {
        position: fixed;
        top: 0; left: 0; right: 0;
        z-index: 100;
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 1.3rem var(--pad);
        background: rgba(10,10,10,0.94);
        backdrop-filter: blur(16px);
        -webkit-backdrop-filter: blur(16px);
        border-bottom: 0.5px solid var(--border);
      }
      .nav-brand {
        display: flex;
        align-items: center;
        flex-shrink: 0;
        transition: opacity 0.2s;
      }
      .nav-brand:hover { opacity: 0.8; }
      .nav-event {
        font-family: var(--sans);
        font-weight: 300;
        font-size: var(--fs-micro);
        letter-spacing: 0.14em;
        text-transform: uppercase;
        color: var(--text-muted);
      }
      .nav-cta {
        font-family: var(--sans);
        font-weight: 400;
        font-size: var(--fs-micro);
        letter-spacing: 0.14em;
        text-transform: uppercase;
        color: var(--gold);
        border: 0.5px solid var(--gold);
        padding: 0.6rem 1.4rem;
        flex-shrink: 0;
        cursor: pointer;
        transition: background 0.2s, color 0.2s, box-shadow 0.25s;
      }
      .nav-cta:hover {
        background: var(--gold);
        color: var(--black);
        box-shadow: 0 0 12px rgba(184,150,106,0.28);
      }
  
      /* ═══ HERO ═══════════════════════════════════════════════ */
      #hero {
        min-height: 100svh;
        display: flex;
        align-items: flex-end;
        padding: clamp(6rem, 12vw, 10rem) var(--pad) clamp(4rem, 8vw, 7rem);
        position: relative;
        overflow: hidden;
      }
      #hero::before {
        content: '';
        position: absolute; inset: 0;
        background:
          radial-gradient(ellipse 65% 65% at 85% 25%, rgba(184,150,106,0.05) 0%, transparent 60%),
          radial-gradient(ellipse 45% 55% at 5% 85%,  rgba(184,150,106,0.035) 0%, transparent 55%);
        pointer-events: none;
        z-index: 1;
      }
      /* decorative vertical rule */
      #hero::after {
        content: '';
        position: absolute;
        top: 15%; bottom: 15%; right: calc(var(--pad) * 0.6);
        width: 0.5px;
        background: linear-gradient(180deg, transparent, var(--gold-rule), transparent);
        pointer-events: none;
        z-index: 1;
      }
  
      .hero-inner {
        max-width: var(--max);
        margin: 0 auto;
        width: 100%;
        position: relative;
        z-index: 2;
      }
      .hero-location {
        font-family: var(--sans);
        font-size: var(--fs-micro);
        font-weight: 400;
        letter-spacing: 0.20em;
        text-transform: uppercase;
        color: var(--gold);
        margin-bottom: 1.8rem;
      }
      .hero-ceo-quote {
        margin-top: 2.4rem;
        margin-bottom: 3rem;
        padding-left: 1.4rem;
        border-left: 0.5px solid var(--gold-rule);
        max-width: 600px;
      }
      .hero-ceo-quote p {
        font-family: var(--sans);
        font-style: italic;
        font-weight: 300;
        font-size: clamp(0.95rem, 1.7vw, 1.15rem);
        line-height: 1.72;
        color: rgba(240,237,232,0.68);
        margin-bottom: 0.7rem;
      }
      .hero-ceo-quote cite {
        font-family: var(--sans);
        font-weight: 400;
        font-size: var(--fs-micro);
        letter-spacing: 0.14em;
        text-transform: uppercase;
        color: var(--gold);
        font-style: normal;
      }
  
      /* ═══ SECTION 1 — ENGINEERING CONVICTION ════════════════ */
      #sound { background: var(--surface); }
      #curl { background: var(--surface); }
      .sound-body { max-width: 640px; }
  
      .sound-pull {
        font-family: var(--sans);
        font-style: italic;
        font-weight: 300;
        font-size: clamp(1.0rem, 1.6vw, 1.2rem);
        line-height: 1.72;
        color: rgba(240,237,232,0.72);
        letter-spacing: -0.01em;
        padding-top: 2rem;
        border-top: 0.5px solid var(--border);
        margin-top: 2rem;
        max-width: 540px;
      }
      .sound-pull cite {
        display: block;
        margin-top: 1rem;
        font-family: var(--sans);
        font-weight: 400;
        font-style: normal;
        font-size: var(--fs-micro);
        letter-spacing: 0.14em;
        text-transform: uppercase;
        color: var(--gold);
      }
  
      /* ═══ SECTION 2 — LUNA PRODUCTS ═════════════════════════ */
      #luna { background: var(--surface); }
      .products-grid {
        display: grid;
        grid-template-columns: 1fr 1fr 1fr;
        border: 0.5px solid var(--border-gold);
        margin: 3rem 0 1.8rem;
      }
      .product {
        padding: 2.6rem 2.2rem;
        border-right: 0.5px solid var(--border-gold);
        position: relative;
        transition: transform 0.3s ease, background 0.3s;
      }
      .product:last-child { border-right: none; }
      .product::after {
        content: '';
        position: absolute;
        top: 0; left: 0; right: 0;
        height: 1px;
        background: linear-gradient(90deg, var(--gold), transparent);
        opacity: 0;
        transition: opacity 0.3s;
      }
      .product:hover { background: var(--surface-mid); transform: translateY(-2px); }
      .product:hover::after { opacity: 1; }
  
      .product-role {
        font-family: var(--sans);
        font-weight: 400;
        font-size: var(--fs-micro);
        letter-spacing: 0.18em;
        text-transform: uppercase;
        color: var(--gold);
        margin-bottom: 0.5rem;
      }
      .product-name {
        font-family: var(--sans);
        font-size: 2.0rem;
        font-weight: 300;
        color: var(--text-primary);
        line-height: 1.1;
        margin-bottom: 1.4rem;
        letter-spacing: -0.02em;
      }
      .product ul li {
        font-family: var(--sans);
        font-weight: 300;
        font-size: var(--fs-body);
        line-height: 1.65;
        color: var(--text-secondary);
        padding: 0.5rem 0 0.5rem 1.3rem;
        border-bottom: 0.5px solid var(--border);
        position: relative;
      }
      .product ul li:last-child { border-bottom: none; }
      .product ul li::before {
        content: '—';
        position: absolute;
        left: 0;
        color: var(--gold);
        font-size: 0.75rem;
      }
      .product-footer-line {
        font-family: var(--sans);
        font-weight: 400;
        font-size: var(--fs-micro);
        letter-spacing: 0.12em;
        text-transform: uppercase;
        color: var(--text-muted);
        margin-top: 1.6rem;
        padding-top: 1.2rem;
        border-top: 0.5px solid var(--border);
      }
  
      .products-note {
        font-family: var(--sans);
        font-weight: 300;
        font-size: var(--fs-small);
        color: var(--text-muted);
        max-width: 560px;
        margin-bottom: 2.4rem;
        line-height: 1.80;
      }
  
      /* ═══ SECTION 3 — DISTRIBUTOR ════════════════════════════ */
      #distributor { background: var(--black); }
      .dist-intro {
        max-width: 660px;
        margin-bottom: 3.5rem;
      }
      .dist-intro p {
        font-size: clamp(1.0rem, 0.8vw, 1.5rem);
        line-height: 1.75;
      }
      .dist-pull {
        font-family: var(--sans);
        font-style: italic;
        font-weight: 300;
        font-size: clamp(1.0rem, 1.8vw, 2.2rem);
        color: rgba(240,237,232,0.5);
        border-top: 0.5px solid var(--border);
        padding-top: 2rem;
        max-width: 560px;
        line-height: 1.75;
      }
  
      /* ═══ SECTION 4 — SOCIAL PROOF ══════════════════════════ */
      #proof { background: var(--surface); }
      .proof-headline {
        font-family: var(--sans);
        font-weight: 300;
        font-size: clamp(1.8rem, 4vw, 3.0rem);
        line-height: 1.18;
        color: var(--text-primary);
        letter-spacing: -0.015em;
        margin-bottom: 3rem;
      }
      .proof-headline em { font-style: normal; color: var(--gold-light); }
  
      .proof-quotes-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        border: 0.5px solid var(--border-gold);
        margin-bottom: 2.4rem;
      }
      .proof-quote {
        padding: 2.4rem 2.2rem;
        border-right: 0.5px solid var(--border-gold);
        transition: transform 0.25s ease, background 0.25s;
      }
      .proof-quote:last-child { border-right: none; }
      .proof-quote:hover {
        transform: translateY(-1px);
        background: rgba(28,28,28,0.6);
      }
      .proof-quote p {
        font-family: var(--sans);
        font-style: italic;
        font-weight: 300;
        font-size: clamp(0.95rem, 1.4vw, 1.05rem);
        line-height: 1.75;
        color: rgba(240,237,232,0.72);
        margin-bottom: 1.2rem;
      }
      .proof-quote cite {
        font-family: var(--sans);
        font-weight: 400;
        font-size: var(--fs-micro);
        letter-spacing: 0.13em;
        text-transform: uppercase;
        color: var(--gold);
        font-style: normal;
        line-height: 1.70;
      }
  
      .session-notice {
        display: flex;
        align-items: flex-start;
        gap: 1.4rem;
        background: rgba(184,150,106,0.05);
        border: 0.5px solid var(--border-gold);
        padding: 1.6rem 2rem;
        margin: 2rem 0 2.8rem;
      }
      .session-notice::before {
        content: '◆';
        flex-shrink: 0;
        font-size: 0.5rem;
        color: var(--gold);
        margin-top: 0.4rem;
      }
      .session-notice-text {
        font-family: var(--sans);
        font-weight: 300;
        font-size: var(--fs-body);
        line-height: 1.72;
        color: var(--text-secondary);
      }
      .session-notice-text strong { color: var(--text-primary); font-weight: 400; }
  
      /* ═══ SECTION 5 — SESSIONS ═══════════════════════════════ */
      #session { background: var(--black); }
      .sessions-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        border: 0.5px solid var(--border-gold);
        margin: 3rem 0 2rem;
      }
      .session-type {
        padding: 3rem 2.6rem;
        border-right: 0.5px solid var(--border-gold);
        position: relative;
      }
      .session-type:last-child { border-right: none; }
      .session-type.primary { background: #131209; }
      .session-type.primary::before {
        content: '';
        position: absolute;
        top: 0; left: 0; right: 0;
        height: 1px;
        background: linear-gradient(90deg, var(--gold), var(--gold-dim), transparent);
      }
  
      .session-name {
        font-family: var(--sans);
        font-style: normal;
        font-weight: 400;
        font-size: 0.95rem;
        letter-spacing: 0.04em;
        color: var(--gold);
        margin-bottom: 0.6rem;
      }
      .session-duration {
        font-family: var(--sans);
        font-weight: 300;
        font-size: clamp(4rem, 8vw, 5.5rem);
        color: var(--text-primary);
        line-height: 1;
        letter-spacing: -0.03em;
        margin-bottom: 0;
        transition: text-shadow 0.25s ease;
      }
      .session-type.primary:hover .session-duration {
        text-shadow: 0 0 8px rgba(184,150,106,0.28);
      }
      .session-unit {
        font-family: var(--sans);
        font-weight: 400;
        font-size: var(--fs-micro);
        letter-spacing: 0.18em;
        text-transform: uppercase;
        color: var(--gold);
        margin-bottom: 1.8rem;
      }
      .session-desc {
        font-family: var(--sans);
        font-weight: 300;
        font-size: var(--fs-body);
        color: var(--text-secondary);
        line-height: 1.78;
        margin-bottom: 1rem;
      }
  
      .location-line {
        display: flex;
        align-items: center;
        gap: 1rem;
        font-family: var(--sans);
        font-weight: 400;
        font-size: var(--fs-micro);
        letter-spacing: 0.14em;
        text-transform: uppercase;
        color: var(--text-muted);
        padding: 1.4rem 0;
        border-top: 0.5px solid var(--border);
        border-bottom: 0.5px solid var(--border);
        margin: 2.2rem 0;
      }
      .location-line::before {
        content: '—';
        color: var(--gold);
        font-size: 0.75rem;
        flex-shrink: 0;
      }
  
      /* ═══ FINAL CTA ══════════════════════════════════════════ */
      #cta-final {
        background: var(--black);
        text-align: center;
        position: relative;
      }
      #cta-final::before {
        content: '';
        position: absolute;
        top: 0; left: var(--pad); right: var(--pad);
        height: 0.5px;
        background: var(--border-gold);
      }
      .cta-headline {
        font-family: var(--sans);
        font-weight: 300;
        font-size: clamp(2.0rem, 4vw, 4.2rem);
        line-height: 1.12;
        letter-spacing: -0.02em;
        color: var(--text-primary);
        margin-bottom: 1.2rem;
      }
      .cta-headline em { font-style: normal; color: var(--gold-light); }
      .cta-sub {
        font-family: var(--sans);
        font-weight: 400;
        font-size: var(--fs-micro);
        letter-spacing: 0.18em;
        text-transform: uppercase;
        color: var(--text-muted);
        margin-bottom: 3rem;
      }
      .cta-buttons {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 1rem;
        margin-bottom: 3.5rem;
      }
  
      /* ═══ FOOTER ════════════════════════════════════════════ */
      footer {
        border-top: 0.5px solid var(--border);
        padding: 2.5rem var(--pad);
        display: flex;
        align-items: center;
        justify-content: space-between;
        flex-wrap: wrap;
        gap: 1rem;
      }
      .footer-brand {
        display: flex;
        align-items: center;
      }
      .footer-meta {
        font-family: var(--sans);
        font-weight: 300;
        font-size: var(--fs-micro);
        letter-spacing: 0.10em;
        color: var(--text-muted);
        text-align: right;
        line-height: 1.9;
      }
  
      /* ═══ REVEAL ANIMATION ══════════════════════════════════ */
      .reveal {
        opacity: 0;
        transform: translateY(22px);
        transition: opacity 0.65s ease, transform 0.65s ease;
      }
      .reveal.visible { opacity: 1; transform: none; }
      .reveal-delay-1 { transition-delay: 0.10s; }
      .reveal-delay-2 { transition-delay: 0.22s; }
      .reveal-delay-3 { transition-delay: 0.36s; }
      .reveal-delay-4 { transition-delay: 0.50s; }
  
      /* ═══ RESPONSIVE — TABLET (≤ 900px) ════════════════════ */
      @media (max-width: 900px) {
        #hero              { min-height: 100svh; }
        .engineering-visual { aspect-ratio: unset; min-height: 58vh; }
        .products-grid     { grid-template-columns: 1fr; }
        .product           { border-right: none; border-bottom: 0.5px solid var(--border-gold); }
        .product:last-child { border-bottom: none; }
        .proof-quotes-grid { grid-template-columns: 1fr; }
        .proof-quote       { border-right: none; border-bottom: 0.5px solid var(--border-gold); }
        .proof-quote:last-child { border-bottom: none; }
        .sessions-grid     { grid-template-columns: 1fr; }
        .session-type      { border-right: none; border-bottom: 0.5px solid var(--border-gold); }
        .session-type:last-child { border-bottom: none; }
        .nav-event         { display: none; }
        .footer-meta       { text-align: left; }
        #hero::after       { display: none; }
      }
  
      /* ═══ RESPONSIVE — MOBILE (≤ 640px) ════════════════════ */
      @media (max-width: 640px) {
        :root {
          --section-y: 4rem;
          --pad: 1.4rem;
        }
        h1 { font-size: clamp(2.2rem, 9vw, 3.2rem); }
        h2 { font-size: clamp(1.6rem, 7vw, 2.4rem); }
        .btn-row { flex-direction: column; align-items: flex-start; }
        .product  { padding: 2rem 1.6rem; }
        .session-type { padding: 2.2rem 1.6rem; }
        p { margin-bottom: 1.3rem; }
        .cta-buttons { padding: 0 1rem; }
        .hero-ceo-quote { max-width: 100%; }
        .proof-quote { padding: 2rem 1.6rem; }
        .session-duration { font-size: clamp(3.2rem, 14vw, 4.5rem); }
        .footer-meta { font-size: 0.65rem; text-align: left; }
      }
  
      /* ═══ REDUCED MOTION ════════════════════════════════════ */
      @media (prefers-reduced-motion: reduce) {
        .reveal { opacity: 1; transform: none; transition: none; }
        * { transition-duration: 0.01ms !important; }
      }