/* ═══════════════════════════════════════════════════════════════
   DiscoverBiologics — Design System CSS
   Extracted from design-reference.html template
   ═══════════════════════════════════════════════════════════════ */

:root {
  --ink: #111820;
  --ink-mid: #1e2c3a;
  --ink-soft: #2d3f50;
  --steel: #3a5068;
  --mist: #8fa4b8;
  --pale: #c8d8e4;
  --paper: #f2f5f7;
  --white: #ffffff;
  --teal: #007a8c;
  --teal-light: #009aaf;
  --teal-glow: rgba(0,122,140,0.1);
  --amber: #b87333;
  --border: rgba(58,80,104,0.2);
  --border-light: rgba(58,80,104,0.12);
  --font-serif: 'Libre Baskerville', Georgia, serif;
  --font-sans: 'Instrument Sans', sans-serif;
  --font-mono: 'Roboto Mono', monospace;
  --shadow-sm: 0 1px 4px rgba(17,24,32,0.08);
  --shadow-md: 0 4px 20px rgba(17,24,32,0.12);
  --shadow-lg: 0 12px 40px rgba(17,24,32,0.18);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0;}
html{scroll-behavior:smooth;}
body{font-family:var(--font-sans);background:var(--paper);color:var(--ink);font-size:15px;line-height:1.6;overflow-x:hidden;overflow-y:auto;}

/* Global overflow prevention */
html,body{max-width:100%;overflow-x:hidden;}
*,*::before,*::after{box-sizing:border-box;}
img,video,iframe,table{max-width:100%;}

/* ── PAYWALL ── */
#paywall{position:fixed;inset:0;z-index:1000;display:flex;align-items:center;justify-content:center;background:rgba(17,24,32,0.78);backdrop-filter:blur(7px);padding:20px;animation:fadeIn .3s ease;}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideUp{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:none}}
.pw-card{background:var(--white);border-radius:12px;width:100%;max-width:440px;overflow:hidden;box-shadow:var(--shadow-lg);animation:slideUp .35s ease;}
.pw-head{background:var(--ink);padding:30px 36px 26px;text-align:center;}
.pw-logo{font-family:var(--font-serif);font-size:20px;color:var(--white);margin-bottom:4px;}
.pw-logo span{color:var(--teal-light);}
.pw-tag{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--mist);}
.pw-body{padding:28px 36px 32px;}
.pw-tabs{display:flex;border-bottom:1px solid var(--border);margin-bottom:24px;}
.ptab{flex:1;padding:9px;text-align:center;font-size:13.5px;font-weight:500;color:var(--mist);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px;transition:all .2s;}
.ptab.active{color:var(--teal);border-bottom-color:var(--teal);}
.ptab-panel{display:none;}
.ptab-panel.active{display:block;}
.f-field{margin-bottom:14px;}
.f-field label{display:block;font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--steel);margin-bottom:5px;}
.f-field input,.f-field select{width:100%;padding:9px 13px;border:1px solid var(--border);border-radius:6px;font-family:var(--font-sans);font-size:14px;color:var(--ink);background:var(--paper);outline:none;transition:border-color .2s;}
.f-field input:focus,.f-field select:focus{border-color:var(--teal);background:white;}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.plan-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:18px;}
.plan-card{border:2px solid var(--border);border-radius:8px;padding:14px;cursor:pointer;transition:all .2s;position:relative;}
.plan-card.sel{border-color:var(--teal);background:var(--teal-glow);}
.plan-name{font-size:12.5px;font-weight:600;color:var(--ink);margin-bottom:3px;}
.plan-price{font-family:var(--font-serif);font-size:20px;color:var(--teal);}
.plan-price span{font-family:var(--font-sans);font-size:11.5px;color:var(--mist);}
.plan-desc{font-size:11px;color:var(--steel);margin-top:3px;}
.plan-badge{position:absolute;top:-1px;right:-1px;background:var(--teal);color:white;font-size:9px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;padding:3px 7px;border-radius:0 6px 0 6px;}
.pw-btn{width:100%;padding:12px;background:var(--teal);color:white;border:none;border-radius:6px;font-family:var(--font-sans);font-size:14px;font-weight:600;cursor:pointer;transition:background .2s;margin-top:2px;}
.pw-btn:hover{background:var(--teal-light);}
.pw-note{text-align:center;font-size:11px;color:var(--mist);margin-top:12px;line-height:1.5;}
.pw-note a{color:var(--teal);text-decoration:none;}
.pw-guest{text-align:center;margin-top:14px;}
.pw-guest button{background:none;border:1px solid var(--border);padding:7px 18px;border-radius:5px;font-size:12px;color:var(--mist);cursor:pointer;font-family:var(--font-sans);transition:all .2s;}
.pw-guest button:hover{border-color:var(--teal);color:var(--teal);}

/* ── CERTIFICATION BAR ── */
.cert-bar{background:var(--teal);width:100%;padding:0;position:sticky;top:60px;z-index:190;}
.cert-bar-inner{max-width:1100px;margin:0 auto;padding:0 48px;display:flex;align-items:center;justify-content:space-between;height:42px;gap:20px;}
.cert-bar-left{display:flex;align-items:center;gap:10px;}
.cert-bar-icon{width:16px;height:16px;fill:none;stroke:rgba(255,255,255,.75);stroke-width:2;flex-shrink:0;}
.cert-bar-text{font-size:13px;color:rgba(255,255,255,.88);letter-spacing:.01em;}
.cert-bar-text strong{color:white;font-weight:600;}
.cert-bar-cta{display:inline-flex;align-items:center;gap:7px;background:white;color:var(--teal);text-decoration:none;padding:5px 15px;border-radius:5px;font-family:var(--font-sans);font-size:12px;font-weight:600;white-space:nowrap;transition:opacity .18s;flex-shrink:0;letter-spacing:.01em;}
.cert-bar-cta:hover{opacity:.88;}
.cert-bar-cta svg{width:11px;height:11px;fill:none;stroke:var(--teal);stroke-width:2.5;}

/* ── NAV ── */
.db-nav{position:sticky;top:0;z-index:200;background:var(--ink);padding:0 48px;display:flex;align-items:center;justify-content:space-between;height:60px;border-bottom:1px solid rgba(255,255,255,0.06);}
.nav-logo{font-family:var(--font-serif);font-size:17px;color:var(--white);text-decoration:none;letter-spacing:.01em;}
.nav-logo span{color:var(--teal-light);}
.nav-center{display:flex;align-items:center;gap:2px;position:absolute;left:50%;transform:translateX(-50%);}
.nav-link{text-decoration:none;color:rgba(255,255,255,.52);font-size:13px;font-weight:400;padding:7px 16px;border-radius:5px;transition:all .18s;white-space:nowrap;cursor:pointer;border:none;background:none;font-family:var(--font-sans);}
.nav-link:hover{color:white;background:rgba(255,255,255,.07);}
.nav-link.active{color:var(--teal-light);}
.nav-right{display:flex;align-items:center;gap:10px;}
.nav-yt{display:flex;align-items:center;gap:7px;color:rgba(255,255,255,.48);text-decoration:none;font-size:12px;padding:6px 12px;border-radius:5px;border:1px solid rgba(255,255,255,.1);transition:all .2s;}
.nav-yt:hover{color:white;border-color:rgba(255,255,255,.25);}
.nav-yt svg{width:14px;height:14px;fill:#ff0000;opacity:.85;}
.nav-login{background:var(--teal);color:white;border:none;padding:7px 18px;border-radius:5px;font-family:var(--font-sans);font-size:13px;font-weight:500;cursor:pointer;transition:background .2s;text-decoration:none;display:inline-block;}
.nav-login:hover{background:var(--teal-light);color:white;}

/* ── MOBILE NAV TOGGLE ── */
.nav-hamburger{display:none;background:none;border:none;cursor:pointer;padding:4px;}
.nav-hamburger svg{width:24px;height:24px;stroke:rgba(255,255,255,.7);fill:none;stroke-width:2;}
.nav-mobile-menu{display:none;position:absolute;top:60px;left:0;right:0;background:var(--ink);border-bottom:1px solid rgba(255,255,255,.08);padding:12px 20px;z-index:199;}
.nav-mobile-menu.open{display:block;}
.nav-mobile-menu a{display:block;color:rgba(255,255,255,.6);text-decoration:none;padding:10px 0;font-size:14px;border-bottom:1px solid rgba(255,255,255,.06);transition:color .15s;}
.nav-mobile-menu a:last-child{border-bottom:none;}
.nav-mobile-menu a:hover{color:white;}

/* ── HOME ── */
.compliance-notice{background:rgba(184,115,51,.08);border-bottom:1px solid rgba(184,115,51,.2);color:rgba(100,80,40,.95);font-size:12.5px;line-height:1.55;padding:10px 48px;text-align:center;font-family:var(--font-sans);}
@media(max-width:900px){.compliance-notice{padding:10px 20px;font-size:12px;text-align:left;}}
.home-hero{background:var(--ink);padding:72px 48px 64px;position:relative;overflow:hidden;}
.home-hero::after{content:'';position:absolute;right:0;top:0;bottom:0;width:40%;background:linear-gradient(90deg,transparent,rgba(0,122,140,0.04));pointer-events:none;}
.home-hero-inner{max-width:1260px;margin:0 auto;display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:center;}
.hero-kicker{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--teal-light);margin-bottom:16px;}
.home-hero h1{font-family:var(--font-serif);font-size:clamp(28px,3.5vw,44px);font-weight:400;color:var(--white);line-height:1.18;margin-bottom:18px;}
.home-hero h1 em{font-style:italic;color:rgba(255,255,255,.62);}
.home-hero-desc{font-size:15px;color:var(--mist);line-height:1.75;max-width:420px;}
.home-nav-cards{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.hnc{background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.08);border-radius:10px;padding:20px 18px;cursor:pointer;transition:all .22s;display:block;text-decoration:none;}
.hnc:hover{background:rgba(0,122,140,.12);border-color:rgba(0,154,175,.35);transform:translateY(-2px);}
.hnc-label{font-family:var(--font-mono);font-size:9px;letter-spacing:.18em;text-transform:uppercase;color:var(--teal-light);margin-bottom:7px;}
.hnc-title{font-family:var(--font-serif);font-size:15px;color:var(--white);margin-bottom:5px;line-height:1.2;}
.hnc-desc{font-size:12px;color:rgba(200,216,228,.48);line-height:1.45;}

/* OVERVIEW STRIP */
.overview-strip{background:var(--white);border-bottom:1px solid var(--border-light);padding:0 48px;}
.overview-strip-inner{max-width:1260px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);border-left:1px solid var(--border-light);}
.ov-cell{padding:28px;border-right:1px solid var(--border-light);cursor:pointer;transition:background .18s;}
.ov-cell:hover{background:var(--paper);}
.ov-num{font-family:var(--font-serif);font-size:32px;color:var(--teal);line-height:1;margin-bottom:4px;}
.ov-label{font-size:13px;font-weight:500;color:var(--ink);margin-bottom:3px;}
.ov-sub{font-size:12px;color:var(--mist);}

/* HOME SEARCH */
.home-search-section{background:var(--paper);border-bottom:1px solid var(--border-light);padding:22px 48px;}
.home-search-inner{max-width:1100px;margin:0 auto;}
.home-search-label{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--teal);margin-bottom:10px;}
.home-search-row{display:flex;gap:12px;align-items:center;margin-bottom:12px;}
.home-search-chips{display:flex;gap:8px;flex-wrap:wrap;}

/* HOME SECTIONS */
.home-section{padding:56px 48px;border-bottom:1px solid var(--border-light);}
.home-section:last-of-type{border-bottom:none;}
.home-section-inner{max-width:1100px;margin:0 auto;}
.sec-label{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--teal);margin-bottom:8px;}
.sec-title{font-family:var(--font-serif);font-size:clamp(20px,2.5vw,28px);font-weight:400;color:var(--ink);margin-bottom:6px;}
.sec-subtitle{font-size:14px;color:var(--mist);max-width:540px;}

/* SEARCH INPUT */
.search-wrap{flex:1;position:relative;}
.search-ico{position:absolute;left:13px;top:50%;transform:translateY(-50%);width:15px;height:15px;color:var(--mist);pointer-events:none;}
.search-input{width:100%;padding:10px 14px 10px 40px;border:1px solid var(--border);border-radius:7px;font-family:var(--font-sans);font-size:14px;color:var(--ink);background:var(--paper);outline:none;transition:all .2s;}
.search-input:focus{border-color:var(--teal);background:white;box-shadow:0 0 0 3px var(--teal-glow);}
.search-input::placeholder{color:var(--mist);}
.sf-chips{display:flex;gap:6px;flex-shrink:0;flex-wrap:wrap;}
.sf-chip{background:transparent;border:1px solid var(--border);color:var(--steel);padding:6px 13px;border-radius:20px;font-size:12px;cursor:pointer;transition:all .18s;font-family:var(--font-sans);white-space:nowrap;}
.sf-chip:hover{border-color:var(--teal);color:var(--teal);}
.sf-chip.active{background:var(--teal);border-color:var(--teal);color:white;}

/* BROWSE ALL BUTTON */
.browse-btn{background:var(--teal);color:white;border:none;padding:10px 22px;border-radius:6px;font-family:var(--font-sans);font-size:14px;font-weight:600;cursor:pointer;transition:background .2s;text-decoration:none;display:inline-block;white-space:nowrap;}
.browse-btn:hover{background:var(--teal-light);color:white;}

/* YT BANNER */
.yt-banner{background:var(--ink);border-radius:10px;padding:36px 40px;display:flex;justify-content:space-between;align-items:center;gap:32px;}
.yt-left h3{font-family:var(--font-serif);font-size:20px;font-weight:400;color:var(--white);margin-bottom:8px;}
.yt-left p{font-size:13.5px;color:var(--mist);line-height:1.6;max-width:460px;}
.yt-btn{display:inline-flex;align-items:center;gap:9px;background:#ff0000;color:white;text-decoration:none;padding:12px 22px;border-radius:7px;font-size:14px;font-weight:600;transition:opacity .2s;white-space:nowrap;flex-shrink:0;}
.yt-btn:hover{opacity:.88;}
.yt-btn svg{width:18px;height:18px;fill:white;}

/* DISCLAIMER */
.disclaimer-bar{background:rgba(184,115,51,.06);border:1px solid rgba(184,115,51,.18);border-radius:8px;padding:14px 18px;font-size:12px;color:rgba(100,80,40,.8);line-height:1.65;margin-top:40px;}
.disclaimer-bar strong{color:var(--amber);}
.disclaimer-bar a{color:var(--amber);}

/* ═══════════════════════════
   PROTOCOLS PAGE
   ═══════════════════════════ */
.proto-page-hero{background:var(--ink);padding:44px 48px 40px;border-bottom:1px solid rgba(255,255,255,.06);}
.proto-hero-inner{max-width:1260px;margin:0 auto;}
.proto-hero-inner h2{font-family:var(--font-serif);font-size:clamp(24px,3vw,36px);font-weight:400;color:var(--white);margin-bottom:8px;}
.proto-hero-inner p{font-size:14px;color:var(--mist);max-width:580px;line-height:1.65;}

/* SEARCH BAR */
.proto-search-bar{background:var(--white);border-bottom:1px solid var(--border-light);padding:18px 48px;position:sticky;top:104px;z-index:100;box-shadow:var(--shadow-sm);}
.proto-search-inner{max-width:1100px;margin:0 auto;display:flex;align-items:center;gap:14px;}

/* PROTOCOL BODY */
.proto-page-body{max-width:1260px;margin:0 auto;padding:32px 44px 64px;}

/* SEARCH RESULTS */
.sr-panel{display:none;border:1px solid var(--border);border-radius:10px;background:var(--white);overflow:hidden;box-shadow:var(--shadow-md);margin-bottom:20px;}
.sr-item{display:flex;justify-content:space-between;align-items:center;padding:13px 20px;border-bottom:1px solid var(--border-light);cursor:pointer;transition:background .15s;text-decoration:none;color:inherit;}
.sr-item:last-child{border-bottom:none;}
.sr-item:hover{background:var(--paper);}
.sr-name{font-size:14px;color:var(--ink);}
.sr-cat{font-family:var(--font-mono);font-size:10px;color:var(--teal);letter-spacing:.12em;}

/* ALL PROTOCOLS DIRECTORY */
.all-dir-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;padding:4px 0 8px;}
.all-dir-card{background:var(--white);border:1px solid var(--border);border-radius:10px;overflow:hidden;transition:box-shadow .2s;}
.all-dir-card:hover{box-shadow:var(--shadow-md);}
.all-dir-header{background:var(--ink);padding:16px 20px;cursor:pointer;transition:background .18s;display:flex;justify-content:space-between;align-items:center;text-decoration:none;}
.all-dir-header:hover{background:var(--ink-mid);}
.all-dir-label{font-family:var(--font-serif);font-size:15px;font-weight:400;color:var(--white);}
.all-dir-count{font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;color:var(--teal-light);text-transform:uppercase;}
.all-dir-links{padding:12px 4px 12px 0;}
.all-dir-link{display:block;padding:7px 20px;font-size:13px;color:var(--steel);cursor:pointer;transition:all .15s;border-left:2px solid transparent;text-decoration:none;}
.all-dir-link:hover{color:var(--teal);background:var(--teal-glow);border-left-color:var(--teal);}

/* COMING SOON CATEGORY CARDS */
.all-dir-card.coming-soon{opacity:.82;}
.all-dir-card.coming-soon .all-dir-header{background:var(--steel);cursor:default;}
.all-dir-card.coming-soon .all-dir-header:hover{background:var(--steel);}
.all-dir-cs-badge{font-family:var(--font-mono);font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:var(--amber);background:rgba(184,115,51,.12);border:1px solid rgba(184,115,51,.25);padding:3px 8px;border-radius:3px;margin-left:10px;}
.all-dir-cs-note{padding:18px 20px;font-size:13px;color:var(--mist);line-height:1.65;font-style:italic;}
.all-dir-cs-note strong{color:var(--steel);font-style:normal;}

/* PROTOCOL LAYOUT */
.protocol-layout{display:grid;grid-template-columns:200px 1fr;border:1px solid var(--border);border-radius:10px;overflow:hidden;background:var(--white);box-shadow:var(--shadow-sm);min-height:600px;}
.proto-sidebar{background:var(--ink);padding:8px 0;width:200px;min-width:0;max-width:200px;overflow:hidden;box-sizing:border-box;}
.psb-group{padding:14px 0 6px;width:100%;overflow:hidden;}
.psb-group-label{font-family:var(--font-mono);font-size:9px;letter-spacing:.18em;text-transform:uppercase;color:rgba(255,255,255,.28);padding:0 18px 6px;display:block;width:100%;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;box-sizing:border-box;}
.psb-item{display:block;padding:8px 18px;font-size:12.5px;color:rgba(255,255,255,.48);cursor:pointer;border-left:2px solid transparent;text-decoration:none;line-height:1.35;width:100%;overflow:hidden;white-space:nowrap;text-overflow:ellipsis;box-sizing:border-box;transition:background .15s,color .15s;}
.psb-item:hover{color:rgba(255,255,255,.85);background:rgba(255,255,255,.04);}
.psb-item.active{color:var(--teal-light);background:rgba(0,154,175,.1);border-left-color:var(--teal-light);}

/* PROTOCOL DETAIL */
.proto-detail{padding:32px 36px;display:none;animation:fadeIn .2s ease;overflow-y:auto;}
.proto-detail.active{display:block;}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.pd-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:22px;padding-bottom:18px;border-bottom:1px solid var(--border-light);}
.pd-title{font-family:var(--font-serif);font-size:22px;font-weight:400;color:var(--ink);margin-bottom:3px;}
.pd-sub{font-size:13px;color:var(--mist);}
.pd-tag{font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;padding:5px 11px;border-radius:4px;background:var(--teal-glow);color:var(--teal);border:1px solid rgba(0,122,140,.2);white-space:nowrap;flex-shrink:0;}
.pd-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;}
.pd-block{background:var(--paper);border:1px solid var(--border-light);border-radius:8px;padding:18px 20px;}
.pd-block.full{grid-column:1/-1;}
.pd-block-label{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--teal);margin-bottom:9px;}
.pd-block-content{font-size:13.5px;color:var(--ink-soft);line-height:1.7;}
.pd-block-content li{margin-left:15px;margin-bottom:4px;}
.pd-table{width:100%;border-collapse:collapse;font-size:13.5px;table-layout:fixed;}
.pd-table th{font-family:var(--font-mono);font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:var(--mist);text-align:left;padding:8px 12px;border-bottom:1px solid var(--border-light);}
.pd-table td{padding:12px 12px;color:var(--ink-soft);border-bottom:1px solid rgba(58,80,104,.06);vertical-align:top;line-height:1.55;}
.pd-table tr:last-child td{border-bottom:none;}
.pd-table .accent{color:var(--teal);font-weight:500;}
.pd-table th:first-child,.pd-table td:first-child{width:34%;}
.pd-table th:nth-child(2),.pd-table td:nth-child(2){width:30%;}
.pd-table th:nth-child(3),.pd-table td:nth-child(3){width:36%;}
.pd-note{background:rgba(184,115,51,.06);border:1px solid rgba(184,115,51,.18);border-radius:6px;padding:10px 14px;font-size:12px;color:rgba(100,80,40,.85);line-height:1.6;margin-top:12px;grid-column:1/-1;}

/* ═══════════════════════════
   PROTOCOL TAB PANELS
   Applied to JS-injected content from public/js/protocol-enhancements.js
   (Injection Specs, Contraindications, Thaw & Handling tabs)
   ═══════════════════════════ */
/* INJECTION SPECS */
.specs-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px;}
.specs-grid.full{grid-template-columns:1fr;}
.spec-block{background:var(--paper);border:1px solid var(--border-light);border-radius:8px;padding:15px 17px;}
.spec-block.full{grid-column:1/-1;}
.spec-label{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--teal);margin-bottom:9px;display:block;}
.spec-content{font-size:13.5px;color:var(--ink-soft);line-height:1.65;}
.spec-content table{width:100%;border-collapse:collapse;font-size:13px;}
.spec-content th{font-family:var(--font-mono);font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:var(--mist);text-align:left;padding:5px 9px;border-bottom:1px solid var(--border-light);}
.spec-content td{padding:8px 9px;color:var(--ink-soft);border-bottom:1px solid rgba(58,80,104,.06);}
.spec-content td.accent{color:var(--teal);font-weight:500;}
.spec-content tr:last-child td{border-bottom:none;}
.spec-content ul{margin-left:15px;}
.spec-content ul li{margin-bottom:4px;}

/* CONTRAINDICATIONS */
.contra-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px;}
.contra-block{border-radius:8px;padding:15px 17px;}
.contra-block.red{background:rgba(239,68,68,.06);border:1px solid rgba(239,68,68,.2);}
.contra-block.amber{background:rgba(184,115,51,.06);border:1px solid rgba(184,115,51,.2);}
.contra-block.blue{background:rgba(0,122,140,.06);border:1px solid rgba(0,122,140,.2);}
.contra-block.gray{background:var(--paper);border:1px solid var(--border-light);}
.contra-block-label{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;margin-bottom:9px;display:block;}
.contra-block.red .contra-block-label{color:#dc2626;}
.contra-block.amber .contra-block-label{color:var(--amber);}
.contra-block.blue .contra-block-label{color:var(--teal);}
.contra-block.gray .contra-block-label{color:var(--steel);}
.contra-block ul{margin-left:15px;font-size:13px;color:var(--ink-soft);line-height:1.65;}
.contra-block ul li{margin-bottom:4px;}

/* THAW & HANDLING */
.thaw-steps{counter-reset:thaw-step;}
.thaw-step{display:flex;gap:12px;align-items:flex-start;padding:10px 0;border-bottom:1px solid var(--border-light);}
.thaw-step:last-child{border-bottom:none;}
.thaw-step-num{width:24px;height:24px;background:var(--teal);color:white;border-radius:50%;font-size:11px;font-weight:600;display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:1px;}
.thaw-step-content{font-size:13.5px;color:var(--ink-soft);line-height:1.6;}
.thaw-step-title{font-weight:600;color:var(--ink);margin-bottom:2px;font-size:13.5px;}
.thaw-warning{background:rgba(239,68,68,.06);border:1px solid rgba(239,68,68,.2);border-radius:6px;padding:10px 14px;font-size:12.5px;color:#dc2626;line-height:1.6;margin-top:12px;}
.thaw-tip{background:var(--teal-glow);border:1px solid rgba(0,122,140,.2);border-radius:6px;padding:10px 14px;font-size:12.5px;color:var(--ink-soft);line-height:1.6;margin-top:8px;}

/* TABS */
.pd-tabs{display:flex;border-bottom:1px solid var(--border-light);margin-bottom:20px;gap:0;}
.pd-tab{padding:10px 20px;font-size:13px;font-weight:500;color:var(--mist);cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-1px;transition:all .18s;background:none;border-top:none;border-left:none;border-right:none;font-family:var(--font-sans);}
.pd-tab.active{color:var(--teal);border-bottom-color:var(--teal);}
.pd-tab-panel{display:none;}
.pd-tab-panel.active{display:block;}

/* OVERVIEW BODY */
.overview-body{font-size:14px;color:var(--ink-soft);line-height:1.75;}
.overview-body h3{font-family:var(--font-serif);font-size:17px;font-weight:400;color:var(--ink);margin:20px 0 8px;}
.overview-body h3:first-child{margin-top:0;}
.overview-body p{margin-bottom:12px;}
.overview-body ul{margin-left:18px;margin-bottom:12px;}
.overview-body ul li{margin-bottom:5px;}
.overview-body .ov-2col{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin:12px 0;}
.overview-body .ov-col-label{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--teal);margin-bottom:8px;}

/* CASE STUDY */
.cs-block{background:var(--paper);border:1px solid var(--border-light);border-radius:8px;padding:18px 20px;margin-bottom:14px;}
.cs-meta{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:12px;padding-bottom:12px;border-bottom:1px solid var(--border-light);}
.cs-meta-item{font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--steel);}
.cs-meta-item span{color:var(--teal);}
.cs-label{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;color:var(--teal);margin:14px 0 6px;display:block;}
.cs-text{font-size:13.5px;color:var(--ink-soft);line-height:1.7;}
.cs-results-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:10px 0;}
.cs-result-card{background:var(--white);border:1px solid var(--border);border-radius:7px;padding:12px 14px;text-align:center;}
.cr-label{font-family:var(--font-mono);font-size:9px;letter-spacing:.1em;text-transform:uppercase;color:var(--mist);margin-bottom:5px;}
.cr-baseline{font-size:12px;color:var(--steel);margin-bottom:2px;}
.cr-outcome{font-family:var(--font-serif);font-size:20px;color:var(--teal);}
.cr-note{font-size:11px;color:var(--mist);margin-top:3px;}
.cs-disclaimer{background:rgba(184,115,51,.06);border:1px solid rgba(184,115,51,.18);border-radius:6px;padding:10px 14px;font-size:11.5px;color:rgba(100,80,40,.85);line-height:1.6;margin-top:12px;}
.cs-view-btn{display:inline-flex;align-items:center;gap:8px;background:var(--teal);color:white;text-decoration:none;padding:10px 20px;border-radius:7px;font-size:13px;font-weight:500;font-family:var(--font-sans);margin-top:16px;transition:background .2s;}
.cs-view-btn:hover{background:var(--teal-light);}
.cs-view-btn svg{width:14px;height:14px;fill:none;stroke:white;stroke-width:2;}

/* RELATED PROTOCOLS */
.related-protocols{margin-top:20px;padding-top:16px;border-top:1px solid var(--border-light);}
.related-label{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--steel);margin-bottom:10px;}
.related-links{display:flex;flex-wrap:wrap;gap:8px;}
.related-link{background:var(--paper);border:1px solid var(--border);border-radius:6px;padding:6px 13px;font-size:12.5px;color:var(--steel);cursor:pointer;transition:all .18s;text-decoration:none;}
.related-link:hover{border-color:var(--teal);color:var(--teal);background:var(--teal-glow);}

/* ═══════════════════════════
   RESEARCH CARDS
   ═══════════════════════════ */
.rc-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.rc{background:var(--white);border:1px solid var(--border);border-radius:10px;padding:24px;transition:all .22s;cursor:pointer;position:relative;overflow:hidden;color:inherit;}
a.rc{display:block;text-decoration:none;}
.rc::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:var(--teal);transform:scaleX(0);transform-origin:left;transition:transform .25s ease;}
.rc:hover::before{transform:scaleX(1);}
.rc:hover{box-shadow:var(--shadow-md);}
.rc-type{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.15em;text-transform:uppercase;color:var(--amber);margin-bottom:10px;}
.rc h4{font-family:var(--font-serif);font-size:16px;font-weight:400;color:var(--ink);line-height:1.35;margin-bottom:8px;}
.rc p{font-size:13px;color:var(--mist);line-height:1.6;margin-bottom:16px;}
.rc-link{font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;color:var(--teal);text-transform:uppercase;margin-top:14px;}
.rc-soon{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-mono);font-size:10px;color:var(--amber);background:rgba(184,115,51,.08);padding:4px 10px;border-radius:4px;border:1px solid rgba(184,115,51,.2);letter-spacing:.08em;text-transform:uppercase;}

/* ═══════════════════════════
   EDUCATION
   ═══════════════════════════ */
.edu-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;}
.edu-card{background:var(--white);border:1px solid var(--border);border-radius:10px;padding:22px;transition:all .22s;cursor:pointer;position:relative;}
.edu-card:hover{border-color:var(--teal);box-shadow:var(--shadow-sm);}
.edu-label{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.15em;text-transform:uppercase;color:var(--teal);margin-bottom:9px;}
.edu-track{font-family:var(--font-mono);font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:var(--mist);margin-bottom:4px;}
.edu-card h4{font-family:var(--font-serif);font-size:15px;font-weight:400;color:var(--ink);margin-bottom:7px;}
.edu-card p{font-size:13px;color:var(--mist);line-height:1.55;}
.edu-card.coming-soon{opacity:.72;cursor:default;}
.edu-card.coming-soon:hover{border-color:var(--border);box-shadow:none;}
.edu-soon-badge{display:inline-block;margin-top:10px;font-family:var(--font-mono);font-size:9px;letter-spacing:.1em;text-transform:uppercase;color:var(--amber);background:rgba(184,115,51,.08);border:1px solid rgba(184,115,51,.2);padding:3px 8px;border-radius:3px;}
.edu-add-badge{display:inline-block;margin-top:10px;font-family:var(--font-mono);font-size:9px;letter-spacing:.1em;text-transform:uppercase;color:var(--teal);background:var(--teal-glow);border:1px solid rgba(0,122,140,.2);padding:3px 8px;border-radius:3px;}
.edu-section-label{font-family:var(--font-mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--teal);margin:32px 0 14px;display:block;padding-bottom:8px;border-bottom:1px solid var(--border-light);}
.sec-header-row{display:flex;justify-content:space-between;align-items:flex-end;margin-bottom:32px;}
.sec-link{font-size:13px;color:var(--teal);text-decoration:none;display:flex;align-items:center;gap:5px;transition:gap .18s;white-space:nowrap;cursor:pointer;}
.sec-link:hover{gap:9px;}

/* ═══════════════════════════
   PRODUCT LIBRARY
   ═══════════════════════════ */
.prod-filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:24px;}
.prod-filter-btn{padding:7px 15px;border:1px solid var(--border);border-radius:20px;background:var(--white);color:var(--steel);font-family:var(--font-sans);font-size:12.5px;font-weight:500;cursor:pointer;transition:all .18s;white-space:nowrap;}
.prod-filter-btn:hover{border-color:var(--teal);color:var(--teal);}
.prod-filter-btn.active{background:var(--teal);border-color:var(--teal);color:white;}
.prod-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:8px;}
.prod-card{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:22px;cursor:pointer;transition:all .22s;position:relative;display:flex;flex-direction:column;gap:8px;}
.prod-card:hover{border-color:var(--teal);box-shadow:var(--shadow-md);transform:translateY(-2px);}
.prod-card.hidden{display:none;}
.prod-cat-tag{display:inline-block;font-size:10.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;padding:3px 9px;border-radius:4px;width:fit-content;}
.prod-cat-tag.musculoskeletal{background:#eef6f0;color:#2a7a4b;}
.prod-cat-tag.neurological{background:#eef0fb;color:#3a4fa8;}
.prod-cat-tag.aesthetic{background:#fdf3f8;color:#9a3068;}
.prod-cat-tag.organ{background:#fff8ee;color:#8a5a00;}
.prod-cat-tag.immune{background:#eef7fb;color:#1a6a8a;}
.prod-cat-tag.wellness{background:#f5f0fb;color:#5a3a8a;}
.prod-name{font-family:var(--font-serif);font-size:16px;color:var(--ink);font-weight:700;line-height:1.3;}
.prod-source{font-size:11.5px;color:var(--mist);font-family:var(--font-mono);line-height:1.4;}
.prod-desc{font-size:13px;color:var(--steel);line-height:1.55;flex:1;}
.prod-view-link{font-size:12px;font-weight:600;color:var(--teal);margin-top:4px;}
.prod-card:hover .prod-view-link{text-decoration:underline;}

/* ── PRODUCT MODAL ── */
#prod-modal-overlay{display:none;position:fixed;inset:0;background:rgba(17,24,32,0.45);z-index:500;backdrop-filter:blur(2px);}
#prod-modal-overlay.open{display:block;}
.prod-modal{position:fixed;top:0;right:0;height:100vh;width:520px;max-width:95vw;background:var(--white);z-index:501;transform:translateX(100%);transition:transform .3s cubic-bezier(.4,0,.2,1);box-shadow:-8px 0 40px rgba(17,24,32,0.18);display:flex;flex-direction:column;overflow:hidden;}
.prod-modal.open{transform:translateX(0);}
.prod-modal-header{padding:28px 28px 20px;border-bottom:1px solid var(--border);display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-shrink:0;background:var(--ink);}
.prod-modal-cat{font-size:10.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--teal-light);margin-bottom:6px;}
.prod-modal-title{font-family:var(--font-serif);font-size:20px;color:var(--white);line-height:1.3;}
.prod-modal-source{font-size:12px;font-family:var(--font-mono);color:var(--mist);margin-top:5px;}
.prod-modal-close{background:rgba(255,255,255,0.12);border:none;color:white;width:32px;height:32px;border-radius:6px;font-size:16px;cursor:pointer;flex-shrink:0;display:flex;align-items:center;justify-content:center;transition:background .18s;}
.prod-modal-close:hover{background:rgba(255,255,255,0.22);}
.prod-modal-body{padding:28px;overflow-y:auto;flex:1;}
.pm-section{margin-bottom:24px;}
.pm-section-label{font-size:10.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--teal);margin-bottom:8px;}
.pm-section p{font-size:13.5px;color:var(--steel);line-height:1.65;}
.pm-specs-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:8px;}
.pm-spec{background:var(--paper);border-radius:7px;padding:11px 13px;}
.pm-spec-label{font-size:10px;font-weight:600;letter-spacing:.07em;text-transform:uppercase;color:var(--mist);margin-bottom:3px;}
.pm-spec-val{font-size:13px;color:var(--ink);font-weight:500;}
.pm-use-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:6px;}
.pm-use-list li{font-size:13px;color:var(--steel);padding-left:16px;position:relative;line-height:1.55;}
.pm-use-list li::before{content:'•';position:absolute;left:0;color:var(--teal);}
.pm-disclaimer{background:var(--paper);border-left:3px solid var(--mist);border-radius:0 6px 6px 0;padding:12px 14px;margin-top:8px;}
.pm-disclaimer p{font-size:11.5px;color:var(--mist);line-height:1.55;}

/* ═══════════════════════════
   REGULATIONS
   ═══════════════════════════ */
.regs-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
.reg-card{background:var(--white);border:1px solid var(--border);border-radius:10px;padding:22px 24px;display:flex;gap:16px;align-items:flex-start;transition:all .2s;}
.reg-card:hover{border-color:var(--teal);box-shadow:var(--shadow-sm);}

/* STATE TABLE */
.state-table{width:100%;border-collapse:collapse;font-size:13px;}
.state-table thead tr{background:var(--ink);color:white;}
.state-table th{text-align:left;padding:10px 14px;font-family:var(--font-mono);font-size:9.5px;letter-spacing:.14em;text-transform:uppercase;font-weight:400;}
.state-table td{padding:11px 14px;font-size:12.5px;color:var(--ink-soft);line-height:1.55;}
.state-row{cursor:pointer;transition:background .15s;border-bottom:1px solid var(--border-light);}
.state-row:hover td{background:rgba(0,122,140,.04) !important;}
.state-row:nth-child(even) td{background:var(--paper);}
.status-pill{display:inline-block;padding:3px 8px;border-radius:4px;font-family:var(--font-mono);font-size:9px;letter-spacing:.1em;text-transform:uppercase;}
.status-enabled{background:rgba(34,197,94,.13);color:#22c55e;border:1px solid rgba(34,197,94,.26);}
.status-consent{background:rgba(245,158,11,.13);color:#f59e0b;border:1px solid rgba(245,158,11,.26);}
.status-federal{background:rgba(107,114,128,.13);color:#6b7280;border:1px solid rgba(107,114,128,.26);}
.status-restrictive{background:rgba(239,68,68,.13);color:#ef4444;border:1px solid rgba(239,68,68,.26);}

/* ═══════════════════════════
   SIMPLE PAGE (research, regs, edu)
   ═══════════════════════════ */
.simple-page-hero{background:var(--ink);padding:44px 48px 40px;}
.simple-body{max-width:1260px;margin:0 auto;padding:40px 48px 64px;}

/* ═══════════════════════════
   AUTH / PAYWALL CARD
   ═══════════════════════════ */
.pw-card{background:var(--white);border-radius:12px;width:100%;max-width:440px;overflow:hidden;box-shadow:var(--shadow-lg);}
.pw-head{background:var(--ink);padding:30px 36px 26px;text-align:center;}
.pw-logo{font-family:var(--font-serif);font-size:20px;color:var(--white);margin-bottom:4px;}
.pw-logo span{color:var(--teal-light);}
.pw-tag{font-family:var(--font-mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--mist);}
.pw-body{padding:28px 36px 32px;}
.f-field{margin-bottom:14px;}
.f-field label{display:block;font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--steel);margin-bottom:5px;}
.f-field input,.f-field select{width:100%;padding:9px 13px;border:1px solid var(--border);border-radius:6px;font-family:var(--font-sans);font-size:14px;color:var(--ink);background:var(--paper);outline:none;transition:border-color .2s;}
.f-field input:focus,.f-field select:focus{border-color:var(--teal);background:white;}
.f-row{display:grid;grid-template-columns:1fr 1fr;gap:10px;}
.pw-btn{width:100%;padding:12px;background:var(--teal);color:white;border:none;border-radius:6px;font-family:var(--font-sans);font-size:14px;font-weight:600;cursor:pointer;transition:background .2s;margin-top:2px;}
.pw-btn:hover{background:var(--teal-light);}
.pw-note{text-align:center;font-size:11px;color:var(--mist);margin-top:12px;line-height:1.5;}
.pw-note a{color:var(--teal);text-decoration:none;}

/* ═══════════════════════════
   FOOTER
   ═══════════════════════════ */
.db-footer{background:var(--ink);border-top:1px solid rgba(255,255,255,.06);padding:44px 48px 26px;}
.footer-inner{max-width:1100px;margin:0 auto;}
.footer-top{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:44px;padding-bottom:32px;border-bottom:1px solid rgba(255,255,255,.06);margin-bottom:22px;}
.footer-brand{font-family:var(--font-serif);font-size:16px;color:var(--white);margin-bottom:11px;}
.footer-brand span{color:var(--teal-light);}
.footer-about{font-size:13px;color:rgba(200,216,228,.38);line-height:1.7;max-width:260px;}
.footer-col h5{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.18em;text-transform:uppercase;color:var(--teal-light);margin-bottom:13px;}
.footer-col a{display:block;font-size:13px;color:rgba(200,216,228,.38);text-decoration:none;margin-bottom:8px;transition:color .18s;}
.footer-col a:hover{color:rgba(200,216,228,.82);}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;}
.footer-bottom p{font-size:12px;color:rgba(200,216,228,.22);}
.footer-bottom-links{display:flex;gap:18px;}
.footer-bottom-links a{font-size:12px;color:rgba(200,216,228,.22);text-decoration:none;transition:color .18s;}
.footer-bottom-links a:hover{color:rgba(200,216,228,.55);}

/* ═══════════════════════════
   RESPONSIVE
   ═══════════════════════════ */
@media(max-width:900px){
  .db-nav{padding:0 20px;}
  .nav-center{display:none;}
  .nav-hamburger{display:block;}
  .home-hero{padding:40px 20px;}
  .home-hero-inner{grid-template-columns:1fr;gap:32px;}
  .overview-strip{padding:0 20px;}
  .overview-strip-inner{grid-template-columns:1fr 1fr;}
  .home-section{padding:40px 20px;}
  .home-search-section{padding:22px 20px;}
  .rc-grid{grid-template-columns:1fr;}
  .edu-grid{grid-template-columns:1fr;}
  .prod-grid{grid-template-columns:1fr;}
  .regs-grid{grid-template-columns:1fr;}
  .proto-page-hero,.simple-page-hero{padding:32px 20px;}
  .proto-search-bar{padding:14px 20px;top:60px;}
  .proto-search-inner{flex-direction:column;}
  .proto-page-body,.simple-body{padding:20px 16px 48px;}
  .protocol-layout{grid-template-columns:1fr;}
  .proto-sidebar{width:100%;max-width:100%;display:flex;overflow-x:auto;padding:8px 12px;gap:0;}
  .psb-group{padding:0;display:flex;gap:0;}
  .psb-group-label{display:none;}
  .psb-item{white-space:nowrap;padding:6px 14px;border-left:none;border-bottom:2px solid transparent;}
  .psb-item.active{border-bottom-color:var(--teal-light);border-left:none;}
  .pd-grid{grid-template-columns:1fr;}
  .cs-results-grid{grid-template-columns:1fr;}
  .overview-body .ov-2col{grid-template-columns:1fr;}
  .all-dir-grid{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr 1fr;gap:28px;}
  .yt-banner{flex-direction:column;padding:26px 22px;}
  .cert-bar-inner{padding:0 20px;}
  .cert-bar-text{font-size:11.5px;}
  .home-search-row{flex-direction:column;}
  .footer-bottom{flex-direction:column;gap:12px;text-align:center;}
}

@media(max-width:600px){
  .overview-strip-inner{grid-template-columns:1fr;}
  .home-nav-cards{grid-template-columns:1fr;}
  .footer-top{grid-template-columns:1fr;}
  .f-row{grid-template-columns:1fr;}
}

/* ── ENHANCED MOBILE RESPONSIVE ── */
@media(max-width:900px){
  /* Nav */
  nav{padding:0 16px;height:52px;}
  .nav-logo{font-size:15px;}
  .nav-yt{display:none;}
  .nav-login{padding:5px 12px;font-size:12px;}
  
  /* Cert bar */
  .cert-bar-inner{height:auto;padding:8px 16px;flex-wrap:wrap;gap:8px;}
  .cert-bar-text{font-size:11px;}
  .cert-bar-cta{padding:4px 10px;font-size:11px;}
  
  /* Protocol pages */
  .proto-page-hero{padding:24px 16px 20px;}
  .proto-hero-inner h2{font-size:24px;}
  .proto-hero-inner p{font-size:13px;}
  
  /* Protocol category sidebar → horizontal scroll tabs */
  .protocol-layout{grid-template-columns:1fr;border:none;box-shadow:none;background:transparent;}
  .proto-sidebar{
    width:100%;max-width:100%;
    display:flex;flex-wrap:nowrap;
    overflow-x:auto;overflow-y:hidden;
    padding:0;gap:0;
    -webkit-overflow-scrolling:touch;
    border-radius:8px 8px 0 0;
    scrollbar-width:none;
  }
  .proto-sidebar::-webkit-scrollbar{display:none;}
  .psb-group{display:flex;flex-wrap:nowrap;padding:0;width:auto;flex-shrink:0;}
  .psb-group-label{display:none;}
  .psb-item{
    white-space:nowrap;
    padding:10px 16px;
    border-left:none;
    border-bottom:2px solid transparent;
    font-size:13px;
    flex-shrink:0;
  }
  .psb-item.active{border-bottom-color:var(--teal-light);border-left:none;background:rgba(0,154,175,.15);}
  
  /* Protocol detail */
  .proto-detail{padding:20px 16px;}
  .pd-header{flex-direction:column;gap:10px;padding:16px 16px 14px;}
  .pd-title{font-size:20px;}
  .pd-tag{align-self:flex-start;}
  .pd-tabs{gap:0;overflow-x:auto;flex-wrap:nowrap;scrollbar-width:none;}
  .pd-tabs::-webkit-scrollbar{display:none;}
  .pd-tab{white-space:nowrap;flex-shrink:0;padding:8px 14px;font-size:12.5px;}
  .pd-grid{grid-template-columns:1fr;gap:10px;}
  .pd-block{padding:12px 14px;}
  .pd-block-label{font-size:9px;}
  .pd-block-content{font-size:13px;}
  .pd-table{font-size:12px;}
  .pd-table th{font-size:8px;padding:4px 6px;}
  .pd-table td{padding:6px;font-size:12px;}
  .pd-note{font-size:11px;padding:8px 12px;}
  
  /* Overview body */
  .overview-body{font-size:13.5px;}
  .overview-body h3{font-size:16px;margin:16px 0 6px;}
  .overview-body .ov-2col{grid-template-columns:1fr;gap:14px;}
  .ov-col-label{font-size:9px;}
  
  /* Case study */
  .cs-meta{flex-direction:column;gap:6px;}
  .cs-results-grid{grid-template-columns:1fr;}
  .cs-text{font-size:13px;}
  .cs-view-btn{font-size:12px;padding:8px 14px;}
  
  /* Related protocols */
  .related-protocols{margin-top:16px;padding-top:12px;}
  .related-links{gap:6px;}
  .related-link{font-size:11.5px;padding:5px 10px;}
  
  /* Search bar */
  .proto-search-bar{top:52px;padding:10px 16px;}
  .search-input{font-size:13px;padding:8px 12px 8px 36px;}
  .sf-chips{overflow-x:auto;flex-wrap:nowrap;scrollbar-width:none;gap:4px;padding-bottom:2px;}
  .sf-chips::-webkit-scrollbar{display:none;}
  .sf-chip{font-size:11px;padding:5px 10px;flex-shrink:0;}
  
  /* Directory grid */
  .all-dir-grid{grid-template-columns:1fr;gap:12px;}
  .all-dir-header{padding:12px 16px;}
  .all-dir-label{font-size:14px;}
  .all-dir-link{padding:6px 16px;font-size:12.5px;}
  
  /* Breadcrumb */
  .proto-page-body{padding:20px 16px 48px;}
  
  /* Disclaimer */
  .disclaimer-bar{font-size:11px;padding:10px 14px;}
  
  /* Home hero */
  .home-hero{padding:28px 16px;}
  .home-hero h1{font-size:24px;}
  .home-hero-desc{font-size:13.5px;}
  .hnc{padding:14px 14px;}
  .hnc-title{font-size:14px;}
  .hnc-desc{font-size:11px;}
  
  /* Overview cells */
  .ov-cell{padding:16px;}
  .ov-num{font-size:24px;}
  .ov-label{font-size:12px;}
  
  /* Research cards */
  .rc{padding:16px;}
  .rc h4{font-size:15px;}
  
  /* Education cards */
  .edu-card{padding:16px;}
  .edu-card h4{font-size:14px;}
  
  /* Footer */
  footer{padding:28px 16px 20px;}
}

@media(max-width:600px){
  nav{padding:0 12px;}
  .nav-logo{font-size:14px;}
  .home-hero{padding:24px 12px;}
  .home-hero h1{font-size:20px;}
  .proto-page-hero{padding:20px 12px 16px;}
  .proto-hero-inner h2{font-size:20px;}
  .proto-detail{padding:16px 12px;}
  .pd-header{padding:12px;}
  .pd-title{font-size:18px;}
  .pd-grid{gap:8px;}
  .pd-block{padding:10px 12px;}
  .proto-page-body{padding:16px 12px 40px;}
  .all-dir-grid{gap:8px;}
  footer{padding:20px 12px 16px;}
  .footer-about{font-size:12px;}
}


/* Additional mobile overflow fixes */
@media(max-width:900px){
  .db-nav{padding:0 12px;}
  .cert-bar-inner{padding:0 12px;}
  .overview-strip{padding:0 12px;}
  .home-search-section{padding:16px 12px;}
  .home-section{padding:28px 12px;}
  .proto-search-bar{padding:10px 12px;}
  .simple-body{padding:24px 16px 48px;}
  .simple-page-hero{padding:24px 16px;}
  .db-footer{padding:28px 12px 20px;}
  .proto-page-hero .proto-hero-inner,
  .simple-page-hero .proto-hero-inner{max-width:100%;overflow:hidden;}
  .pd-header{word-break:break-word;}
  .pd-title{word-break:break-word;font-size:20px;}
  .protocol-layout{overflow:hidden;max-width:100%;}
  .protocol-detail-wrapper{overflow:hidden;max-width:100%;}
  .proto-detail{overflow:hidden;max-width:100%;}
  .pd-table{display:block;overflow-x:auto;}
}

/* Additional responsive rules from reference design */
@media(max-width:900px){
  nav{padding:0 20px;}.nav-center{display:none;}
  .cert-bar-inner{padding:0 20px;}.cert-bar-text{font-size:11.5px;}
  .home-hero{padding:40px 20px;}.home-hero-inner{grid-template-columns:1fr;gap:32px;}
  .overview-strip{padding:0 20px;}.overview-strip-inner{grid-template-columns:1fr 1fr;}
  .home-search-section{padding:40px 20px;}
  .home-section{padding:40px 20px;}
}

/* ── RESEARCH LIBRARY ── */
.rl-section-label{font-family:var(--font-mono);font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:var(--teal);display:block;margin:32px 0 12px;}
.rl-category{margin-bottom:36px;}
.rl-cat-title{font-family:var(--font-serif);font-size:18px;font-weight:700;color:var(--ink);margin-bottom:14px;padding-bottom:8px;border-bottom:2px solid var(--teal);}
.rl-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
.rl-card{background:var(--white);border:1px solid var(--border);border-radius:10px;padding:18px 20px;display:flex;flex-direction:column;gap:6px;transition:border-color .18s,box-shadow .18s;cursor:pointer;}
.rl-card:hover{border-color:var(--teal);box-shadow:0 2px 12px rgba(0,122,140,.08);}
.rl-card-type{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--mist);}
.rl-card-type.clinical{color:#2a7a4b;}
.rl-card-type.review{color:var(--teal);}
.rl-card-type.trial{color:#3a4fa8;}
.rl-card-type.meta{color:#8a5a00;}
.rl-card h4{font-family:var(--font-serif);font-size:14px;color:var(--ink);line-height:1.4;font-weight:700;}
.rl-card p{font-size:12.5px;color:var(--steel);line-height:1.55;flex:1;}
.rl-card-meta{font-size:11px;color:var(--mist);font-style:italic;}
.rl-card-link{font-size:11.5px;font-weight:600;color:var(--teal);margin-top:4px;text-decoration:none;}
.rl-card-link:hover{text-decoration:underline;}
.rl-db-section{background:var(--ink);border-radius:10px;padding:20px 24px;margin-bottom:28px;display:flex;align-items:center;justify-content:space-between;gap:20px;}
.rl-db-text h4{font-family:var(--font-serif);font-size:16px;color:white;margin-bottom:4px;}
.rl-db-text p{font-size:12.5px;color:var(--mist);line-height:1.5;}
.rl-db-links{display:flex;gap:10px;flex-shrink:0;flex-wrap:wrap;}
.rl-db-btn{padding:8px 16px;border-radius:6px;font-size:12px;font-weight:600;text-decoration:none;white-space:nowrap;}
.rl-db-btn.teal{background:var(--teal);color:white;}
.rl-db-btn.outline{border:1px solid rgba(255,255,255,.3);color:white;}

/* ── PROTOCOL RESEARCH BAR ── */
.proto-research-bar{border-top:1px solid var(--border);margin-top:28px;padding-top:20px;}
.proto-research-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px;}
.proto-research-label{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--mist);}
.proto-research-all{font-size:12px;font-weight:600;color:var(--teal);text-decoration:none;}
.proto-research-all:hover{text-decoration:underline;}
.proto-research-links{display:flex;flex-direction:column;gap:8px;}
.proto-research-link{display:flex;align-items:flex-start;gap:10px;padding:10px 14px;background:var(--paper);border:1px solid var(--border);border-radius:7px;text-decoration:none;transition:border-color .18s,background .18s;}
.proto-research-link:hover{border-color:var(--teal);background:var(--white);}
.proto-research-link-icon{width:18px;height:18px;flex-shrink:0;margin-top:1px;opacity:.5;}
.proto-research-link-text{font-size:12.5px;color:var(--ink);line-height:1.4;font-weight:500;}
.proto-research-link-source{font-size:11px;color:var(--mist);margin-top:1px;}

/* ── TESTIMONIALS ── */
.testi-section{background:var(--paper);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:56px 48px;}
.testi-inner{max-width:1100px;margin:0 auto;}
.testi-header{text-align:center;margin-bottom:36px;}
.testi-title{font-family:var(--font-serif);font-size:clamp(20px,2.4vw,28px);font-weight:400;color:var(--ink);margin:0;}
.testi-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;}
.testi-card{background:var(--white);border:1px solid var(--border);border-radius:12px;padding:28px;display:flex;flex-direction:column;gap:16px;position:relative;}
.testi-card-wide{grid-column:span 2;}
.testi-quote-mark{font-family:var(--font-serif);font-size:52px;line-height:.8;color:var(--teal);opacity:.35;flex-shrink:0;user-select:none;}
.testi-text{font-size:14px;color:var(--steel);line-height:1.7;flex:1;font-style:italic;}
.testi-author{display:flex;align-items:center;gap:12px;margin-top:4px;padding-top:16px;border-top:1px solid var(--border);}
.testi-avatar{width:38px;height:38px;border-radius:50%;background:var(--teal);color:white;font-family:var(--font-sans);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0;letter-spacing:.04em;}
.testi-name{font-size:13px;font-weight:600;color:var(--ink);line-height:1.3;}
.testi-role{font-size:11.5px;color:var(--mist);margin-top:2px;font-family:var(--font-mono);letter-spacing:.04em;}

/* ── ACKNOWLEDGEMENT MODAL ── */
.ack-overlay{position:fixed;inset:0;background:rgba(17,24,32,0.92);z-index:9000;display:flex;align-items:center;justify-content:center;padding:20px;backdrop-filter:blur(4px);}
.ack-overlay.hidden{display:none;}
.ack-modal{background:var(--white);border-radius:14px;max-width:680px;width:100%;max-height:92vh;display:flex;flex-direction:column;overflow:hidden;box-shadow:0 24px 80px rgba(0,0,0,0.5);}
.ack-header{background:var(--ink);padding:28px 32px 22px;flex-shrink:0;}
.ack-logo{font-family:var(--font-serif);font-size:22px;color:white;font-weight:700;margin-bottom:6px;}
.ack-logo span{color:var(--teal);}
.ack-kicker{font-family:var(--font-mono);font-size:10px;letter-spacing:.15em;text-transform:uppercase;color:var(--mist);}
.ack-body{padding:28px 32px;overflow-y:auto;flex:1;}
.ack-intro{font-size:13.5px;color:var(--steel);line-height:1.65;margin-bottom:20px;padding-bottom:20px;border-bottom:1px solid var(--border);}
.ack-section{margin-bottom:18px;}
.ack-section-title{font-family:var(--font-sans);font-size:10.5px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--teal);margin-bottom:7px;}
.ack-section p{font-size:13px;color:var(--steel);line-height:1.65;}
.ack-check-row{display:flex;gap:12px;align-items:flex-start;background:var(--paper);border:1px solid var(--border);border-radius:8px;padding:16px;margin-top:20px;cursor:pointer;}
.ack-check-row input[type=checkbox]{width:18px;height:18px;flex-shrink:0;margin-top:2px;accent-color:var(--teal);cursor:pointer;}
.ack-check-label{font-size:13px;color:var(--ink);line-height:1.6;font-weight:500;}
.ack-footer{padding:20px 32px 24px;border-top:1px solid var(--border);flex-shrink:0;background:var(--paper);}
.ack-btn{width:100%;padding:14px;background:var(--teal);color:white;border:none;border-radius:8px;font-family:var(--font-sans);font-size:15px;font-weight:600;cursor:pointer;transition:all .2s;letter-spacing:.02em;}
.ack-btn:disabled{background:var(--border);color:var(--mist);cursor:not-allowed;}
.ack-btn:not(:disabled):hover{background:var(--steel);}
.ack-footer-note{font-size:11.5px;color:var(--mist);text-align:center;margin-top:10px;line-height:1.5;}

/* Mobile rules for new sections */
@media(max-width:900px){
  .rl-grid{grid-template-columns:1fr;}
  .rl-db-section{flex-direction:column;align-items:flex-start;}
  .testi-section{padding:36px 20px;}
  .testi-grid{grid-template-columns:1fr;}
  .testi-card-wide{grid-column:span 1;}
  .specs-grid,.contra-grid{grid-template-columns:1fr;}
}