:root{
    --ground:#2A1A14;--shadow:#1C110C;--mid:#3E2A22;--cream:#F1E8DC;--oat:#E8DCC8;--hairline:#D4C4A8;--white-pill:#FAF7F0;
    --on-dark:#F1E8DC;--on-dark-muted:#B09884;--on-dark-soft:#8A7A60;--on-cream:#2A1A14;--on-cream-2:#7A5A48;--on-cream-3:#B09884;
    --repair:#742406;--regenerate:#797559;--revive:#d8cbb0;--resolve:#f1e8dc;--regain:#d48057;--restore:#291a14;
    --display:"Neue Haas Grotesk Display","Söhne","Inter",system-ui,sans-serif;
    --serif:"Instrument Serif","GT Super Text","Tiempos",serif;
    --body:"DM Sans","Söhne Buch",system-ui,sans-serif;
    --max:1160px;
  }
  *,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
  html,body{background:var(--ground);color:var(--on-dark);font-family:var(--body);font-weight:400;font-size:14px;line-height:1.55;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
  body{overflow-x:hidden}
  img,svg{display:block;max-width:100%}
  a{color:inherit;text-decoration:none}
  button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}

  .eyebrow{font-size:11px;letter-spacing:0.18em;text-transform:uppercase;font-weight:400;color:var(--on-dark-muted)}
  .eyebrow-cream{color:var(--on-cream-3)}
  .wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
  .sec-dark{background:var(--ground);color:var(--on-dark)}
  .sec-cream{background:var(--cream);color:var(--on-cream)}

  .pill{display:inline-flex;align-items:center;gap:10px;padding:10px 18px;border-radius:999px;border:1px solid transparent;white-space:nowrap;font-size:11px;letter-spacing:0.16em;text-transform:uppercase;transition:all .25s ease}
  .pill-ghost-dark{border-color:var(--mid);color:var(--on-dark)}
  .pill-ghost-dark:hover{background:rgba(241,232,220,0.08)}
  .pill-filled-cream{background:var(--white-pill);color:var(--on-cream);border-color:var(--white-pill)}
  .pill-filled-dark{background:var(--ground);color:var(--cream);border-color:var(--ground)}

  /* Nav */
  .nav-wrap{position:absolute;top:18px;left:0;right:0;display:flex;justify-content:center;z-index:20}
  .nav{display:flex;align-items:center;gap:28px;padding:10px 18px;border-radius:999px;border:1px solid var(--mid);background:rgba(28,17,12,0.6);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px)}
  .nav .brand{display:flex;align-items:center;gap:10px;padding-right:16px;border-right:1px solid var(--mid)}
  .nav .brand-word{font-family:var(--display);font-size:13px;letter-spacing:0.18em;text-transform:uppercase}
  .nav .links{display:flex;gap:22px;font-size:10.5px;letter-spacing:0.18em;text-transform:uppercase;color:var(--on-dark-muted)}
  .nav .links a:hover,.nav .links a.active{color:var(--on-dark)}
  .nav .tail{padding-left:16px;border-left:1px solid var(--mid);font-size:10.5px;letter-spacing:0.18em;text-transform:uppercase;color:var(--on-dark-muted)}
  @media (max-width:768px){ .nav .links,.nav .tail{display:none} .nav{gap:12px} .nav .brand{border-right:0;padding-right:0} }

  /* Hero */
  .hero{min-height:60vh;position:relative;display:flex;align-items:flex-end;overflow:hidden;padding:160px 24px 72px}
  .hero-photo{position:absolute;inset:0;background:radial-gradient(70% 60% at 45% 55%, #6A4A38 0%, #3E2A22 55%, #2A1A14 100%);z-index:0}
  .hero-photo::after{content:"";position:absolute;inset:0;background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='320' height='320'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='2' seed='14'/><feColorMatrix values='0 0 0 0 0.18 0 0 0 0 0.1 0 0 0 0 0.06 0 0 0 0.28 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>");opacity:.8;mix-blend-mode:overlay}
  .hero-photo::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(42,26,20,0.35) 0%,rgba(42,26,20,0) 30%,rgba(42,26,20,0) 60%,rgba(42,26,20,0.85) 100%)}
  .hero-inner{position:relative;z-index:2;max-width:var(--max);margin:0 auto;width:100%;display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:end}
  .hero .eyebrow{display:block;margin-bottom:24px}
  .hero h1{font-family:var(--display);font-weight:400;text-transform:uppercase;letter-spacing:-0.035em;line-height:.92;font-size:clamp(64px,11vw,144px)}
  .hero .thesis{font-family:var(--serif);font-style:italic;font-size:clamp(22px,2.4vw,28px);line-height:1.22;max-width:420px}
  .hero .thesis .sub{font-family:var(--body);font-style:normal;font-size:14px;line-height:1.6;color:var(--on-dark-muted);margin-top:18px;max-width:420px}
  @media (max-width:900px){ .hero-inner{grid-template-columns:1fr;gap:32px} .hero{padding:140px 20px 56px} }

  /* Thesis pill */
  .thesis-pill{padding:48px 24px 72px}
  .thesis-pill .pill-row{max-width:980px;margin:0 auto;border:1px solid var(--mid);border-radius:999px;padding:22px 40px;display:grid;grid-template-columns:1.1fr 1fr;gap:32px;align-items:center}
  .thesis-pill .l{font-family:var(--display);font-weight:400;text-transform:uppercase;letter-spacing:-0.02em;font-size:22px;line-height:1.05}
  .thesis-pill .r{color:var(--on-dark-muted);font-size:13px;line-height:1.55}
  @media (max-width:768px){ .thesis-pill .pill-row{grid-template-columns:1fr;border-radius:28px;padding:24px;gap:14px} }

  /* Filter row */
  .filter-row{padding:32px 24px 48px;border-top:1px solid var(--mid)}
  .filter-row .inner{max-width:var(--max);margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:18px}
  .filter-row .eyebrow{margin:0}
  .filter-row .filters{display:flex;gap:8px;flex-wrap:wrap}
  .filter-row .filters button{padding:8px 14px;border-radius:999px;border:1px solid var(--mid);font-size:10.5px;letter-spacing:0.16em;text-transform:uppercase;color:var(--on-dark-muted);transition:all .25s ease}
  .filter-row .filters button.active{background:var(--cream);color:var(--on-cream);border-color:var(--cream)}
  .filter-row .filters button:not(.active):hover{background:rgba(241,232,220,0.06);color:var(--on-dark)}

  /* Featured video */
  .featured{padding:0 24px 48px}
  .featured .inner{max-width:var(--max);margin:0 auto}
  .featured-card{aspect-ratio:16/9;border-radius:24px;overflow:hidden;position:relative;background:radial-gradient(120% 90% at 50% 40%,#C9AE92 0%,#A47864 55%,#3E2A22 100%);border:1px solid var(--mid);cursor:pointer;transition:transform .35s ease}
  .featured-card:hover{transform:translateY(-3px)}
  .featured-card::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 40%,rgba(28,17,12,0.85) 100%)}
  .featured-card .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:86px;height:86px;border-radius:999px;border:1.5px solid rgba(241,232,220,0.8);display:flex;align-items:center;justify-content:center;z-index:2;background:rgba(28,17,12,0.35);backdrop-filter:blur(6px)}
  .featured-card .play svg{fill:var(--cream);width:22px;height:22px}
  .featured-card .tag{position:absolute;top:24px;left:24px;z-index:2;font-family:var(--display);font-size:10px;letter-spacing:0.2em;text-transform:uppercase;padding:8px 14px;border:1px solid rgba(241,232,220,0.3);border-radius:999px;color:var(--cream);background:rgba(28,17,12,0.35);backdrop-filter:blur(6px)}
  .featured-card .meta{position:absolute;bottom:32px;left:32px;right:32px;z-index:2;display:flex;justify-content:space-between;align-items:flex-end;gap:24px;color:var(--cream)}
  .featured-card .meta h2{font-family:var(--display);font-weight:400;text-transform:uppercase;letter-spacing:-0.025em;font-size:clamp(28px,4vw,48px);line-height:1.02;max-width:720px}
  .featured-card .meta .d{font-size:11px;letter-spacing:0.14em;text-transform:uppercase;color:rgba(241,232,220,0.75);white-space:nowrap}

  /* Section header */
  .sec-head{max-width:var(--max);margin:0 auto 32px;display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}
  .sec-head h2{font-family:var(--display);font-weight:400;text-transform:uppercase;letter-spacing:-0.025em;font-size:clamp(28px,3.5vw,40px);line-height:1.02}
  .sec-head .eyebrow{display:block;margin-bottom:10px}

  /* Video chapter */
  .chapter{padding:64px 24px}
  .chapter .grid{max-width:var(--max);margin:0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
  .vcard{border-radius:20px;overflow:hidden;position:relative;aspect-ratio:4/5;cursor:pointer;transition:transform .35s ease;border:1px solid var(--mid)}
  .vcard:hover{transform:translateY(-3px)}
  .vcard::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 45%,rgba(28,17,12,0.85) 100%)}
  .vcard.v1{background:radial-gradient(120% 90% at 50% 40%,#A47864 0%,#5A3F2E 60%,#2A1A14 100%)}
  .vcard.v2{background:radial-gradient(120% 90% at 50% 40%,#8A7A60 0%,#3E2A22 60%,#1C110C 100%)}
  .vcard.v3{background:radial-gradient(120% 90% at 50% 40%,#C9AE92 0%,#A47864 60%,#3E2A22 100%)}
  .vcard.v4{background:radial-gradient(120% 90% at 50% 40%,#B89870 0%,#8A7A60 60%,#2A1A14 100%)}
  .vcard.v5{background:radial-gradient(120% 90% at 50% 40%,#6A4A38 0%,#3E2A22 60%,#1C110C 100%)}
  .vcard.v6{background:radial-gradient(120% 90% at 50% 40%,#d48057 0%,#A47864 55%,#3E2A22 100%)}
  .vcard .play{position:absolute;left:50%;top:46%;transform:translate(-50%,-50%);width:56px;height:56px;border-radius:999px;border:1px solid rgba(241,232,220,0.8);display:flex;align-items:center;justify-content:center;z-index:2;background:rgba(28,17,12,0.3);backdrop-filter:blur(6px);transition:transform .35s ease,background .35s ease}
  .vcard:hover .play{transform:translate(-50%,-50%) scale(1.06);background:rgba(28,17,12,0.5)}
  .vcard .play svg{fill:var(--cream);width:14px;height:14px}
  .vcard .tag{position:absolute;top:16px;left:16px;z-index:2;font-family:var(--display);font-size:9.5px;letter-spacing:0.18em;text-transform:uppercase;padding:6px 10px;border:1px solid rgba(241,232,220,0.3);border-radius:999px;color:var(--cream);background:rgba(28,17,12,0.3);backdrop-filter:blur(6px)}
  .vcard .dot{display:inline-block;width:6px;height:6px;border-radius:999px;margin-right:8px;vertical-align:middle}
  .vcard .meta{position:absolute;bottom:20px;left:20px;right:20px;z-index:2;color:var(--cream)}
  .vcard .meta h3{font-family:var(--display);font-weight:400;text-transform:uppercase;letter-spacing:-0.005em;font-size:17px;line-height:1.12;margin-bottom:8px}
  .vcard .meta .d{font-size:10px;letter-spacing:0.14em;text-transform:uppercase;color:rgba(241,232,220,0.75)}
  @media (max-width:900px){ .chapter .grid{grid-template-columns:1fr 1fr} }
  @media (max-width:560px){ .chapter .grid{grid-template-columns:1fr} }

  /* Chapter (cream variant) */
  .chapter.sec-cream .vcard{border-color:var(--hairline)}
  .chapter.sec-cream .sec-head h2{color:var(--on-cream)}
  .chapter.sec-cream .sec-head .eyebrow{color:var(--on-cream-3)}

  /* By compound table */
  .by-compound{padding:96px 24px}
  .by-compound .sec-head{margin-bottom:40px}
  .by-compound .inner{max-width:var(--max);margin:0 auto}
  .rows{border-top:1px solid var(--mid)}
  .row-item{border-bottom:1px solid var(--mid);padding:24px 8px;display:grid;grid-template-columns:60px 1.4fr 1fr 80px;gap:24px;align-items:center;cursor:pointer;transition:background-color .25s ease}
  .row-item:hover{background:rgba(241,232,220,0.03)}
  .row-item .stripe{width:10px;height:10px;border-radius:999px;justify-self:start}
  .row-item .lbl{font-family:var(--display);font-size:clamp(16px,1.8vw,20px);letter-spacing:-0.005em;text-transform:uppercase;color:var(--on-dark);line-height:1.1}
  .row-item .sub{font-family:var(--serif);font-style:italic;font-size:13px;color:var(--on-dark-muted)}
  .row-item .time{font-size:11px;letter-spacing:0.12em;color:var(--on-dark-muted);text-transform:uppercase;font-variant-numeric:tabular-nums;text-align:right}
  .row-item .plus{width:40px;height:40px;border-radius:999px;border:1px solid var(--mid);display:flex;align-items:center;justify-content:center;justify-self:end}
  @media (max-width:720px){
    .row-item{grid-template-columns:20px 1fr 60px;gap:16px}
    .row-item .sub{grid-column:2/3}
    .row-item .time{grid-column:3/4}
    .row-item .plus{display:none}
  }

  /* Closing */
  .closing{padding:120px 24px 120px;text-align:center;border-top:1px solid var(--mid)}
  .closing h2{font-family:var(--display);font-weight:400;text-transform:uppercase;letter-spacing:-0.035em;font-size:clamp(48px,8vw,96px);line-height:.92;max-width:900px;margin:0 auto 36px}
  .closing .sub{font-family:var(--serif);font-style:italic;font-size:18px;color:var(--on-dark-muted);max-width:520px;margin:0 auto 32px}
  .closing .ctas{display:flex;justify-content:center;gap:12px;flex-wrap:wrap}

  /* Disclaimer */
  .disclaimer{padding:64px 24px;text-align:center;background:var(--shadow);border-top:1px solid var(--mid);border-bottom:1px solid var(--mid)}
  .disclaimer .eyebrow{display:block;margin-bottom:16px}
  .disclaimer p{font-family:var(--serif);font-style:italic;font-size:clamp(20px,2.4vw,26px);line-height:1.3;color:var(--on-dark);max-width:720px;margin:0 auto 14px}
  .disclaimer .meta{font-size:12px;letter-spacing:0.06em;color:var(--on-dark-muted);max-width:640px;margin:0 auto}

  /* Footer */
  footer{border-top:1px solid var(--mid);padding:72px 24px 0}
  .foot-grid{max-width:var(--max);margin:0 auto;display:grid;grid-template-columns:1.2fr repeat(3,1fr);gap:40px;padding-bottom:56px;align-items:flex-start}
  .foot-brand{display:flex;flex-direction:column;gap:18px}
  .foot-brand .wm{font-family:var(--display);font-size:20px;letter-spacing:0.2em;text-transform:uppercase}
  .foot-col h5{font-family:var(--display);font-size:10.5px;letter-spacing:0.18em;text-transform:uppercase;color:var(--on-dark-muted);margin-bottom:18px;font-weight:400}
  .foot-col ul{list-style:none;display:flex;flex-direction:column;gap:10px}
  .foot-col li{font-size:12px;color:var(--cream);letter-spacing:0.04em}
  .foot-legal{border-top:1px solid var(--mid);max-width:var(--max);margin:0 auto;padding:22px 0 24px;display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap;font-size:10px;letter-spacing:0.1em;text-transform:uppercase;color:var(--on-dark-muted)}
  .foot-watermark{position:relative;overflow:hidden;padding:40px 0 48px;text-align:center}
  .foot-watermark .wm{font-family:var(--display);font-weight:400;text-transform:uppercase;letter-spacing:-0.02em;font-size:clamp(36px,6vw,72px);color:rgba(241,232,220,0.28);line-height:1}
  .meta{font-size:11px;letter-spacing:0.04em;color:var(--on-dark-muted)}
  @media (max-width:900px){ .foot-grid{grid-template-columns:1fr 1fr;gap:32px} }
  @media (max-width:560px){ .foot-grid{grid-template-columns:1fr} }

  [data-reveal]{opacity:0;transform:translateY(20px);transition:opacity .6s cubic-bezier(.2,.8,.2,1),transform .6s cubic-bezier(.2,.8,.2,1)}
  [data-reveal].is-in{opacity:1;transform:none}
  [data-stagger] > *{opacity:0;transform:translateY(10px);transition:opacity .4s cubic-bezier(.2,.8,.2,1),transform .4s cubic-bezier(.2,.8,.2,1)}
  [data-stagger].is-in > *{opacity:1;transform:none}
  [data-stagger].is-in > *:nth-child(2){transition-delay:.06s}
  [data-stagger].is-in > *:nth-child(3){transition-delay:.12s}
  [data-stagger].is-in > *:nth-child(4){transition-delay:.18s}
  [data-stagger].is-in > *:nth-child(5){transition-delay:.24s}
  [data-stagger].is-in > *:nth-child(6){transition-delay:.30s}

  /* --- Protocols dropdown ------------------------------------------------
     The primary menu now carries one level of children (header.php passes
     depth 2). Only "Protocols" uses it: its six children are the six
     product_cat archives. Each child is tagged with a seq-cat-* class when
     the menu item is created, which is what colours the dot.
     Colours are hardcoded rather than tokenised because chrome.css — which
     dresses the calculator page — carries neither --mid nor the category
     tokens, and this block has to be byte-identical across all six
     stylesheets that render the nav.
     Below 768px .nav .links is display:none, so there is no hover surface
     on phones and nothing to do there.                                    */
  .nav .links li{position:relative}

  .nav .links .menu-item-has-children > a::after{
    content:"";display:inline-block;width:4px;height:4px;margin-left:8px;
    border-right:1px solid currentColor;border-bottom:1px solid currentColor;
    transform:rotate(45deg) translateY(-2px);opacity:.7;
    transition:transform .22s ease,opacity .22s ease}
  .nav .links .menu-item-has-children:hover > a::after,
  .nav .links .menu-item-has-children:focus-within > a::after{
    transform:rotate(225deg) translateY(-2px);opacity:1}

  .nav .links .sub-menu{
    position:absolute;top:calc(100% + 16px);left:50%;
    transform:translateX(-50%) translateY(-6px);
    min-width:212px;margin:0;padding:10px;list-style:none;
    display:flex;flex-direction:column;gap:2px;
    border-radius:18px;border:1px solid var(--mid,#3E2A22);
    background:rgba(28,17,12,0.92);
    backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
    box-shadow:0 18px 40px rgba(0,0,0,.35);
    opacity:0;visibility:hidden;pointer-events:none;z-index:30;
    transition:opacity .22s ease,transform .22s ease,visibility .22s}

  /* Invisible bridge over the 16px gap, so the panel does not close while
     the pointer travels from the parent item down into it. */
  .nav .links .sub-menu::before{
    content:"";position:absolute;left:0;right:0;top:-18px;height:18px}

  .nav .links .menu-item-has-children:hover > .sub-menu,
  .nav .links .menu-item-has-children:focus-within > .sub-menu{
    opacity:1;visibility:visible;pointer-events:auto;
    transform:translateX(-50%) translateY(0)}

  .nav .links .sub-menu li{display:block}
  .nav .links .sub-menu a{
    display:flex;align-items:center;gap:11px;
    padding:9px 12px;border-radius:11px;
    font-size:10.5px;letter-spacing:0.16em;text-transform:uppercase;
    color:var(--on-dark-muted);white-space:nowrap;
    transition:background-color .2s ease,color .2s ease}
  .nav .links .sub-menu a::before{
    content:"";flex:none;width:9px;height:9px;border-radius:50%;
    background:currentColor;box-shadow:0 0 0 1px rgba(241,232,220,.22)}
  .nav .links .sub-menu a:hover,
  .nav .links .sub-menu a:focus-visible{
    background:rgba(241,232,220,.08);color:var(--on-dark)}

  .nav .links .seq-cat-repair     > a::before{background:#742406}
  .nav .links .seq-cat-regenerate > a::before{background:#797559}
  .nav .links .seq-cat-revive     > a::before{background:#d8cbb0}
  .nav .links .seq-cat-resolve    > a::before{background:#f1e8dc}
  .nav .links .seq-cat-regain     > a::before{background:#d48057}
  .nav .links .seq-cat-restore    > a::before{background:#291a14}