/* ============================================================
   EDENA — Ethical Decision Engine for Nurse-led AI
   NAIO Institute · Design System (clinical authority)
   ============================================================ */

/* ---------- Fonts ---------- */
/* Source Serif 4 (display/editorial), Inter (UI/body), IBM Plex Mono (clauses/code) */

/* ---------- Design tokens ---------- */
:root {
  /* Brand neutrals — deep navy ink + cool grays */
  --ink:        #0b1f33;
  --ink-soft:   #2a3f53;
  --muted:      #5a6b7b;
  --faint:      #8595a3;
  --line:       #dde4ea;
  --line-soft:  #eaeef2;
  --paper:      #ffffff;
  --bg:         #f6f8fa;
  --bg-cool:    #eef2f6;

  /* Navy scale (dark sections) */
  --navy-900:   #08182a;
  --navy-850:   #0a1f33;
  --navy-800:   #0c2740;
  --navy-700:   #10395a;
  --navy-grad-a:#0a1f33;
  --navy-grad-b:#0e3450;

  /* Teal — primary accent (trust / clinical) */
  --teal:       #0e7c86;
  --teal-700:   #0a5c64;
  --teal-600:   #0e7c86;
  --teal-500:   #149aa6;
  --teal-100:   #e2f1f2;
  --teal-050:   #f0f8f8;

  /* Tier semantics */
  --green:      #1b873f;  --green-bg:  #e8f4ec;  --green-line:#bfe0cb;
  --yellow:     #b06a06;  --yellow-bg: #fbf2e0;  --yellow-line:#ecd6a8;
  --orange:     #c2410c;  --orange-bg: #fbeadf;  --orange-line:#f0c4a6;
  --red:        #b42318;  --red-bg:    #fbe9e7;  --red-line: #f0bbb4;
  --redblock:   #7a1612;  --redblock-bg:#f3dbd8;

  /* Typography */
  --serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --sans:  "Inter", system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono:  "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;

  /* Fluid type scale */
  --fs-display: clamp(2.6rem, 1.6rem + 4.0vw, 4.6rem);
  --fs-h1:      clamp(2.05rem, 1.4rem + 2.6vw, 3.1rem);
  --fs-h2:      clamp(1.6rem, 1.25rem + 1.5vw, 2.25rem);
  --fs-h3:      clamp(1.22rem, 1.06rem + 0.7vw, 1.5rem);
  --fs-lede:    clamp(1.12rem, 1.02rem + 0.5vw, 1.36rem);
  --fs-body:    1.0625rem;
  --fs-sm:      0.9375rem;
  --fs-xs:      0.8125rem;

  /* Layout */
  --maxw: 1180px;
  --maxw-prose: 760px;
  --radius: 4px;
  --radius-lg: 10px;
  --shadow-sm: 0 1px 2px rgba(11,31,51,.06), 0 1px 3px rgba(11,31,51,.05);
  --shadow:    0 4px 14px rgba(11,31,51,.08), 0 2px 6px rgba(11,31,51,.05);
  --shadow-lg: 0 18px 50px rgba(8,24,42,.16);
  --gut: clamp(20px, 5vw, 40px);
  --ease: cubic-bezier(.22,.61,.36,1);
}

/* ---------- Reset / base ---------- */
*,*::before,*::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){ html{ scroll-behavior:auto; } }
body {
  margin: 0;
  font-family: var(--sans);
  font-size: var(--fs-body);
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img,svg,video { max-width: 100%; height: auto; display: block; }
a { color: var(--teal-700); text-decoration: none; }
a:hover { color: var(--teal); }
strong { font-weight: 650; color: var(--ink); }
hr { border: 0; border-top: 1px solid var(--line); margin: 2.5rem 0; }

/* Headings */
h1,h2,h3,h4 { font-family: var(--serif); color: var(--ink); line-height: 1.12; font-weight: 600; letter-spacing: -.012em; margin: 0 0 .55em; }
h1 { font-size: var(--fs-h1); }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); line-height:1.2; }
h4 { font-size: 1.06rem; font-family: var(--sans); font-weight: 700; letter-spacing: 0; }
p { margin: 0 0 1.05rem; }
::selection { background: var(--teal-100); color: var(--ink); }

/* Focus */
:focus-visible { outline: 3px solid var(--teal-500); outline-offset: 2px; border-radius: 2px; }

/* Skip link */
.skip { position:absolute; left:-9999px; top:0; background:var(--ink); color:#fff; padding:.6rem 1rem; z-index:200; border-radius:0 0 6px 0; }
.skip:focus { left:0; color:#fff; }

/* ---------- Layout ---------- */
.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: var(--gut); }
.prose { max-width: var(--maxw-prose); }
.section { padding-block: clamp(3.2rem, 6vw, 6rem); }
.section--tight { padding-block: clamp(2.4rem, 4vw, 3.6rem); }
.section--bg { background: var(--bg); border-block: 1px solid var(--line-soft); }
.section--cool { background: var(--bg-cool); }
.section--ink { background: var(--navy-850); color: #e8eef4; }
.section--ink h1,.section--ink h2,.section--ink h3 { color: #fff; }
.section--ink p { color: #c4d2de; }
.center { text-align: center; }
.measure { max-width: 64ch; }
.mx-auto { margin-inline: auto; }

/* Eyebrow / kicker */
.eyebrow {
  font-family: var(--sans); font-weight: 700; font-size: .76rem;
  letter-spacing: .14em; text-transform: uppercase; color: var(--teal-700);
  margin: 0 0 1rem; display: inline-flex; align-items: center; gap: .55rem;
}
.eyebrow::before { content:""; width: 26px; height: 2px; background: var(--teal); display:inline-block; }
.section--ink .eyebrow { color: var(--teal-500); }
.section--ink .eyebrow::before { background: var(--teal-500); }
.eyebrow--plain::before { display:none; }

.lede { font-size: var(--fs-lede); line-height: 1.55; color: var(--ink-soft); }
.section--ink .lede { color: #cdd9e4; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,.88);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.masthead {
  background: var(--navy-900);
  color: #aebfce;
  font-size: .76rem; letter-spacing: .04em;
}
.masthead .container { display:flex; align-items:center; justify-content:space-between; min-height: 34px; gap:1rem; }
.masthead a { color: #d6e2ee; font-weight: 600; }
.masthead a:hover { color:#fff; }
.masthead .mast-right { color:#8ba0b4; font-weight: 500; }
.masthead .mast-right span { color:#cfe6e9; }

.navbar { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; min-height: 68px; }
.brand { display: flex; align-items: center; gap: .7rem; font-family: var(--serif); font-weight: 700; font-size: 1.32rem; color: var(--ink); letter-spacing: -.01em; }
.brand:hover { color: var(--ink); }
.brand .mark { flex: 0 0 auto; }
.brand small { display:block; font-family:var(--sans); font-weight:600; font-size:.6rem; letter-spacing:.18em; text-transform:uppercase; color:var(--teal-700); margin-top:1px; }
.brand .brand-txt { line-height: 1; }

.nav { display: flex; align-items: center; gap: .25rem; }
.nav a {
  font-size: .94rem; font-weight: 550; color: var(--ink-soft);
  padding: .5rem .7rem; border-radius: 6px; position: relative;
}
.nav a:hover { color: var(--ink); background: var(--bg-cool); }
.nav a.is-active { color: var(--teal-700); }
.nav a.is-active::after { content:""; position:absolute; left:.7rem; right:.7rem; bottom:.2rem; height:2px; background: var(--teal); border-radius:2px; }
.nav .btn { margin-left:.4rem; }

/* dropdown */
.has-sub { position: relative; }
.submenu {
  position:absolute; top: calc(100% + 6px); left: 0; min-width: 250px;
  background:#fff; border:1px solid var(--line); border-radius: 10px;
  box-shadow: var(--shadow-lg); padding:.5rem; opacity:0; visibility:hidden;
  transform: translateY(6px); transition: .18s var(--ease); z-index: 50;
}
.has-sub:hover .submenu, .has-sub:focus-within .submenu { opacity:1; visibility:visible; transform:none; }
.submenu a { display:block; padding:.5rem .65rem; border-radius:6px; font-size:.9rem; color:var(--ink-soft); }
.submenu a:hover { background: var(--teal-050); color: var(--teal-700); }
.submenu a span { display:block; font-size:.76rem; color:var(--faint); font-weight:450; }

.nav-toggle { display:none; background:none; border:1px solid var(--line); border-radius:8px; width:42px; height:38px; cursor:pointer; align-items:center; justify-content:center; }
.nav-toggle svg { width:20px; height:20px; stroke: var(--ink); }

@media (max-width: 960px){
  .nav-toggle { display:inline-flex; }
  .nav {
    position: fixed; inset: 0 0 0 auto; width: min(86vw, 360px);
    flex-direction: column; align-items: stretch; gap: .15rem;
    background:#fff; padding: 5rem 1.2rem 2rem; box-shadow: var(--shadow-lg);
    transform: translateX(100%); transition: transform .26s var(--ease);
    overflow-y: auto; border-left:1px solid var(--line);
  }
  .nav.open { transform: none; }
  .nav a { padding:.75rem .8rem; font-size:1rem; border-radius:8px; }
  .nav a.is-active::after{ display:none; }
  .nav .btn { margin:.5rem 0 0; }
  .submenu { position:static; opacity:1; visibility:visible; transform:none; box-shadow:none; border:none; padding:.1rem 0 .4rem .7rem; min-width:0; }
  .submenu a { font-size:.92rem; }
  .nav-backdrop { position:fixed; inset:0; background:rgba(8,24,42,.4); opacity:0; visibility:hidden; transition:.2s; z-index:90; }
  .nav-backdrop.open { opacity:1; visibility:visible; }
}

/* ---------- Buttons ---------- */
.btn { display:inline-flex; align-items:center; gap:.5rem; font-family:var(--sans); font-weight:600; font-size:.95rem; line-height:1; padding:.78rem 1.25rem; border-radius:7px; border:1px solid transparent; cursor:pointer; transition:.16s var(--ease); white-space:nowrap; }
.btn svg { width:1.05em; height:1.05em; }
.btn--primary { background: var(--teal-700); color:#fff; }
.btn--primary:hover { background: var(--teal); color:#fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover { border-color: var(--teal); color: var(--teal-700); background: var(--teal-050); }
.btn--light { background:#fff; color: var(--ink); }
.btn--light:hover { background:#fff; color: var(--teal-700); transform: translateY(-1px); box-shadow: var(--shadow); }
.btn--onink { background: transparent; border-color: rgba(255,255,255,.32); color:#fff; }
.btn--onink:hover { background: rgba(255,255,255,.1); color:#fff; border-color:#fff; }
.btn--lg { padding:.95rem 1.6rem; font-size:1rem; }
.btn-row { display:flex; flex-wrap:wrap; gap:.8rem; align-items:center; }

.arrow-link { font-weight:600; display:inline-flex; align-items:center; gap:.4rem; }
.arrow-link::after { content:"→"; transition: transform .16s var(--ease); }
.arrow-link:hover::after { transform: translateX(4px); }

/* ---------- Hero ---------- */
.hero { position: relative; background: linear-gradient(160deg, var(--navy-grad-a), var(--navy-grad-b) 70%, #0b2a42); color:#eaf1f7; overflow:hidden; }
.hero::after { content:""; position:absolute; inset:0; background:
   radial-gradient(60% 70% at 85% 0%, rgba(20,154,166,.22), transparent 60%),
   radial-gradient(40% 60% at 0% 100%, rgba(14,124,134,.16), transparent 55%);
   pointer-events:none; }
.hero .container { position: relative; z-index:2; padding-block: clamp(3.6rem, 8vw, 6.4rem); }
.hero h1 { color:#fff; font-size: var(--fs-display); letter-spacing:-.02em; max-width: 17ch; }
.hero .lede { color:#c7d6e3; max-width: 56ch; margin-top: 1.2rem; }
.hero .btn-row { margin-top: 2rem; }
.hero .eyebrow { color: var(--teal-500); }
.hero-grid { display:grid; grid-template-columns: 1.15fr .85fr; gap: clamp(2rem,5vw,4rem); align-items:center; }
@media (max-width: 900px){ .hero-grid{ grid-template-columns:1fr; } }

/* hero flow diagram chip */
.flowcard { background: rgba(255,255,255,.05); border:1px solid rgba(255,255,255,.14); border-radius: 14px; padding: 1.4rem; backdrop-filter: blur(4px); }
.flowstep { display:flex; align-items:flex-start; gap:.9rem; padding:.7rem 0; }
.flowstep + .flowstep { border-top:1px solid rgba(255,255,255,.1); }
.flowstep .fs-ico { flex:0 0 auto; width:34px; height:34px; border-radius:8px; display:grid; place-items:center; font-weight:700; font-family:var(--mono); font-size:.85rem; }
.flowstep h5 { margin:.05rem 0 .1rem; color:#fff; font-size:.98rem; font-family:var(--sans); font-weight:650; }
.flowstep p { margin:0; color:#aebfce; font-size:.86rem; line-height:1.4; }
.fs-propose{ background: rgba(20,154,166,.2); color:#7fdbe2; }
.fs-gate{ background: rgba(176,106,6,.24); color:#f0c88a; }
.fs-decide{ background: rgba(20,154,166,.2); color:#7fdbe2; }
.fs-steward{ background: rgba(27,135,63,.22); color:#86d99e; }
.fs-audit{ background: rgba(255,255,255,.12); color:#cfe0ee; }

/* ---------- Grid helpers ---------- */
.grid { display:grid; gap: clamp(1rem, 2.4vw, 1.6rem); }
.grid-2 { grid-template-columns: repeat(2,1fr); }
.grid-3 { grid-template-columns: repeat(3,1fr); }
.grid-4 { grid-template-columns: repeat(4,1fr); }
@media (max-width: 900px){ .grid-3,.grid-4{ grid-template-columns: repeat(2,1fr); } }
@media (max-width: 620px){ .grid-2,.grid-3,.grid-4{ grid-template-columns: 1fr; } }
.split { display:grid; grid-template-columns: 1fr 1fr; gap: clamp(1.6rem,4vw,3.4rem); align-items:center; }
.split--wide-l { grid-template-columns: 1.2fr .8fr; }
.split--wide-r { grid-template-columns: .8fr 1.2fr; }
@media (max-width: 820px){ .split,.split--wide-l,.split--wide-r{ grid-template-columns:1fr; } }

/* ---------- Cards ---------- */
.card { background:#fff; border:1px solid var(--line); border-radius: var(--radius-lg); padding: clamp(1.25rem,2.2vw,1.7rem); transition: .18s var(--ease); }
.card--hover:hover { border-color: var(--teal-100); box-shadow: var(--shadow); transform: translateY(-2px); }
.card h3 { font-size: 1.16rem; }
.card .card-ico { width:44px; height:44px; border-radius:10px; background: var(--teal-050); color: var(--teal-700); display:grid; place-items:center; margin-bottom:1rem; }
.card .card-ico svg { width:22px; height:22px; }
.card p:last-child { margin-bottom:0; }
.card--link { display:flex; flex-direction:column; }
.card--link .arrow-link { margin-top:auto; padding-top:1rem; }
.card-num { font-family:var(--mono); font-size:.8rem; color:var(--teal-700); font-weight:600; }

/* feature row */
.feature { display:flex; gap:1rem; align-items:flex-start; }
.feature .f-ico { flex:0 0 auto; width:40px; height:40px; border-radius:9px; background:var(--teal-050); color:var(--teal-700); display:grid; place-items:center; }
.feature .f-ico svg{ width:20px;height:20px; }
.feature h4 { margin:.3rem 0 .35rem; }
.feature p { color: var(--muted); font-size: var(--fs-sm); margin:0; }

/* ---------- Stats ---------- */
.statband { display:grid; grid-template-columns: repeat(4,1fr); gap: clamp(1rem,3vw,2rem); }
@media (max-width:760px){ .statband{ grid-template-columns: repeat(2,1fr); } }
.stat .stat-num { font-family:var(--serif); font-weight:600; font-size: clamp(2.1rem,1.4rem+2.4vw,3rem); line-height:1; color: var(--ink); letter-spacing:-.02em; }
.section--ink .stat .stat-num { color:#fff; }
.stat .stat-num .u { font-size:.5em; color: var(--teal-600); margin-left:.1em; }
.stat .stat-label { margin-top:.55rem; font-size: var(--fs-sm); color: var(--muted); line-height:1.4; }
.section--ink .stat .stat-label{ color:#a9bccd; }
.stat .stat-src { font-size: var(--fs-xs); color: var(--faint); margin-top:.35rem; }

/* ---------- Callouts ---------- */
.callout { border-radius: 10px; padding: 1.2rem 1.35rem; border:1px solid var(--line); background:#fff; }
.callout p:last-child { margin-bottom:0; }
.callout--accent { border-left: 4px solid var(--teal); background: var(--teal-050); }
.callout--translate { border-left:4px solid var(--teal); background:linear-gradient(180deg,var(--teal-050),#fff); }
.callout--translate .callout-tag { color: var(--teal-700); }
.callout-tag { font-family:var(--sans); font-weight:700; font-size:.72rem; letter-spacing:.12em; text-transform:uppercase; color:var(--teal-700); margin:0 0 .4rem; display:block; }
.callout--warn { border-left:4px solid var(--orange); background: var(--orange-bg); }
.callout--warn .callout-tag { color: var(--orange); }

/* Pull quote */
.pullquote { font-family: var(--serif); font-size: clamp(1.3rem,1.05rem+1.1vw,1.85rem); line-height:1.32; color: var(--ink); border-left: 3px solid var(--teal); padding-left: 1.3rem; margin: 1.5rem 0; letter-spacing:-.01em; }
.section--ink .pullquote { color:#fff; border-color: var(--teal-500); }
.pullquote cite { display:block; font-family:var(--sans); font-style:normal; font-size:.92rem; font-weight:600; color:var(--muted); margin-top:.9rem; letter-spacing:0; }
.section--ink .pullquote cite{ color:#9fb4c6; }

/* Doctrine line (big statements) */
.doctrine { font-family:var(--serif); font-size: clamp(1.5rem,1.1rem+1.8vw,2.3rem); line-height:1.25; letter-spacing:-.015em; max-width: 20ch; }
.doctrine .em { color: var(--teal-600); }
.section--ink .doctrine .em { color: var(--teal-500); }

/* ---------- Tier system ---------- */
.tier-badge { display:inline-flex; align-items:center; gap:.45rem; font-family:var(--sans); font-weight:700; font-size:.74rem; letter-spacing:.06em; text-transform:uppercase; padding:.3rem .6rem; border-radius:999px; border:1px solid; }
.tier-badge .dot { width:8px; height:8px; border-radius:50%; }
.tier-green  { color:var(--green);  background:var(--green-bg);  border-color:var(--green-line); }  .tier-green .dot{background:var(--green);}
.tier-yellow { color:var(--yellow); background:var(--yellow-bg); border-color:var(--yellow-line); } .tier-yellow .dot{background:var(--yellow);}
.tier-orange { color:var(--orange); background:var(--orange-bg); border-color:var(--orange-line); } .tier-orange .dot{background:var(--orange);}
.tier-red    { color:var(--red);    background:var(--red-bg);    border-color:var(--red-line); }    .tier-red .dot{background:var(--red);}
.tier-redblock { color:#fff; background:var(--redblock); border-color:var(--redblock); } .tier-redblock .dot{background:#fff;}

.tier-card { border-radius: 12px; border:1px solid var(--line); background:#fff; overflow:hidden; display:flex; flex-direction:column; }
.tier-card .tc-bar { height: 6px; }
.tier-card .tc-body { padding: 1.3rem 1.35rem 1.5rem; display:flex; flex-direction:column; height:100%; }
.tier-card h3 { font-size:1.18rem; margin-bottom:.1rem; }
.tier-card .tc-sub { font-size:.78rem; font-weight:700; letter-spacing:.07em; text-transform:uppercase; margin-bottom:.7rem; }
.tier-card p { font-size: var(--fs-sm); color: var(--ink-soft); }
.tier-card .tc-posture { margin-top:auto; padding-top:1rem; font-size:var(--fs-sm); }
.tier-card .tc-posture b { display:block; font-size:.72rem; letter-spacing:.1em; text-transform:uppercase; color:var(--faint); margin-bottom:.2rem; font-weight:700; }
.t-green .tc-bar{background:var(--green);} .t-green h3,.t-green .tc-sub{color:var(--green);}
.t-yellow .tc-bar{background:var(--yellow);} .t-yellow h3,.t-yellow .tc-sub{color:var(--yellow);}
.t-orange .tc-bar{background:var(--orange);} .t-orange h3,.t-orange .tc-sub{color:var(--orange);}
.t-red .tc-bar{background:var(--red);} .t-red h3,.t-red .tc-sub{color:var(--red);}
.tier-card.is-feature { box-shadow: var(--shadow); border-color: var(--orange-line); }

/* ---------- Tabs ---------- */
.tabs { display:flex; gap:.4rem; border:1px solid var(--line); background:var(--bg); padding:.3rem; border-radius:10px; width:max-content; max-width:100%; flex-wrap:wrap; }
.tab-btn { font-family:var(--sans); font-weight:600; font-size:.92rem; padding:.55rem 1.05rem; border-radius:7px; border:none; background:none; color:var(--muted); cursor:pointer; transition:.15s; }
.tab-btn:hover{ color:var(--ink); }
.tab-btn[aria-selected="true"]{ background:#fff; color:var(--teal-700); box-shadow:var(--shadow-sm); }
.tab-panel[hidden]{ display:none; }

/* ---------- Tables ---------- */
.table-wrap { overflow-x:auto; border:1px solid var(--line); border-radius:10px; }
table.tbl { width:100%; border-collapse:collapse; font-size: var(--fs-sm); min-width: 540px; }
.tbl th,.tbl td { text-align:left; padding:.8rem 1rem; border-bottom:1px solid var(--line-soft); vertical-align:top; }
.tbl thead th { background: var(--bg); font-family:var(--sans); font-weight:700; font-size:.78rem; letter-spacing:.05em; text-transform:uppercase; color:var(--ink-soft); }
.tbl tbody tr:last-child td { border-bottom:none; }
.tbl tbody tr:hover { background: var(--teal-050); }
.tbl td code, .tbl th code { font-family:var(--mono); font-size:.85em; }

/* mapping table (NIST -> EDENA etc.) */
.map-th { color: var(--teal-700) !important; }

/* ---------- Principles ---------- */
.principle { background:#fff; border:1px solid var(--line); border-radius:12px; padding:1.5rem 1.5rem 1.6rem; position:relative; display:flex; flex-direction:column; transition:.18s var(--ease); }
.principle:hover{ box-shadow:var(--shadow); border-color:var(--teal-100); }
.principle .p-num { font-family:var(--mono); font-size:.82rem; font-weight:600; color:#fff; background:var(--teal-700); width:34px; height:34px; border-radius:8px; display:grid; place-items:center; margin-bottom:1rem; }
.principle h3 { font-size:1.14rem; line-height:1.2; }
.principle p { font-size:var(--fs-sm); color:var(--ink-soft); }
.principle .p-anchor { margin-top:auto; padding-top:1rem; font-size:var(--fs-xs); color:var(--muted); border-top:1px solid var(--line-soft); }
.principle .p-anchor b { color:var(--teal-700); font-weight:650; }

/* ---------- Standards / clauses ---------- */
.std-meta { display:flex; flex-wrap:wrap; gap:.5rem .9rem; font-size:var(--fs-sm); color:var(--muted); align-items:center; }
.std-meta .badge { background:var(--teal-700); color:#fff; }
.clause { border-left:2px solid var(--line); padding:.2rem 0 .2rem 1.2rem; margin: 0 0 1.4rem; }
.clause .clause-no { font-family:var(--mono); font-size:.85rem; color:var(--teal-700); font-weight:600; }
.clause h3 { font-size:1.18rem; margin:.25rem 0 .5rem; }
.clause h4 { margin-top:1.1rem; }
.normative { font-family:var(--mono); font-weight:600; font-size:.86em; color:var(--ink); background:var(--teal-050); padding:.05em .35em; border-radius:3px; }
.req-list { list-style:none; padding:0; margin:1rem 0; }
.req-list li { position:relative; padding:.55rem 0 .55rem 1.7rem; border-bottom:1px solid var(--line-soft); font-size:var(--fs-sm); }
.req-list li::before { content:""; position:absolute; left:.2rem; top:1.05rem; width:7px; height:7px; border-radius:50%; background:var(--teal); }
.req-list li:last-child{ border-bottom:none; }

/* table of contents (sticky) */
.doc-layout { display:grid; grid-template-columns: 230px 1fr; gap: clamp(1.6rem,4vw,3.2rem); align-items:start; }
@media (max-width: 920px){ .doc-layout{ grid-template-columns:1fr; } .toc{ position:static !important; } }
.toc { position:sticky; top:96px; font-size:var(--fs-sm); }
.toc h4 { font-family:var(--sans); font-size:.74rem; letter-spacing:.12em; text-transform:uppercase; color:var(--faint); margin-bottom:.7rem; }
.toc a { display:block; padding:.32rem 0 .32rem .8rem; color:var(--muted); border-left:2px solid var(--line); }
.toc a:hover { color:var(--teal-700); border-color:var(--teal); }

/* ---------- Pills / tags / badges ---------- */
.badge { display:inline-flex; align-items:center; gap:.35rem; font-family:var(--sans); font-weight:700; font-size:.7rem; letter-spacing:.08em; text-transform:uppercase; padding:.28rem .55rem; border-radius:5px; background:var(--bg-cool); color:var(--ink-soft); }
.tag { display:inline-flex; align-items:center; font-size:.8rem; font-weight:600; color:var(--teal-700); background:var(--teal-050); border:1px solid var(--teal-100); padding:.25rem .6rem; border-radius:999px; }
.chips { display:flex; flex-wrap:wrap; gap:.5rem; }

/* citation superscript */
.cite { font-family:var(--sans); font-size:.7em; font-weight:700; color:var(--teal-700); vertical-align:super; line-height:0; text-decoration:none; padding:0 .1em; }
.cite:hover { color:var(--teal); }

/* source list */
.sources { list-style:none; padding:0; margin:0; counter-reset:src; }
.sources li { counter-increment:src; position:relative; padding:.7rem 0 .7rem 2.3rem; border-bottom:1px solid var(--line-soft); font-size:var(--fs-sm); color:var(--ink-soft); }
.sources li::before { content:counter(src); position:absolute; left:0; top:.7rem; width:1.5rem; height:1.5rem; background:var(--bg-cool); color:var(--ink-soft); border-radius:5px; font-family:var(--mono); font-size:.75rem; font-weight:600; display:grid; place-items:center; }
.sources li a { font-weight:600; }

/* ---------- FAQ accordion ---------- */
.accordion { border-top:1px solid var(--line); }
.acc-item { border-bottom:1px solid var(--line); }
.acc-q { width:100%; text-align:left; background:none; border:none; cursor:pointer; padding:1.25rem 2.5rem 1.25rem 0; position:relative; font-family:var(--serif); font-size:1.18rem; font-weight:600; color:var(--ink); line-height:1.3; }
.acc-q::after { content:"+"; position:absolute; right:.2rem; top:1.1rem; font-family:var(--sans); font-size:1.5rem; font-weight:400; color:var(--teal-700); transition:transform .2s; }
.acc-q[aria-expanded="true"]::after { content:"–"; }
.acc-a { padding:0 2.5rem 1.4rem 0; color:var(--ink-soft); }
.acc-a p:last-child{ margin-bottom:0; }
.acc-a[hidden]{ display:none; }

/* ---------- Breadcrumb ---------- */
.breadcrumb { font-size:var(--fs-sm); color:var(--faint); display:flex; gap:.5rem; align-items:center; flex-wrap:wrap; margin-bottom:1.4rem; }
.breadcrumb a{ color:var(--muted); }
.breadcrumb .sep{ color:var(--line); }

/* ---------- Page hero (interior) ---------- */
.page-hero { background: var(--navy-850); color:#eaf1f7; position:relative; overflow:hidden; }
.page-hero::after{ content:""; position:absolute; inset:0; background: radial-gradient(50% 80% at 100% 0%, rgba(20,154,166,.18), transparent 60%); }
.page-hero .container{ position:relative; z-index:2; padding-block: clamp(2.8rem,6vw,4.6rem); }
.page-hero h1{ color:#fff; max-width:20ch; }
.page-hero .lede{ color:#c7d6e3; max-width:60ch; }
.page-hero .eyebrow{ color:var(--teal-500); }
.page-hero .breadcrumb{ color:#7f96aa; }
.page-hero .breadcrumb a{ color:#a9bccd; }

/* ---------- CTA band ---------- */
.cta-band { background: linear-gradient(150deg, var(--navy-850), var(--navy-700)); color:#fff; border-radius:16px; padding: clamp(2rem,5vw,3.4rem); position:relative; overflow:hidden; }
.cta-band::after{ content:""; position:absolute; inset:0; background:radial-gradient(50% 120% at 100% 0%, rgba(20,154,166,.25), transparent 60%); }
.cta-band > * { position:relative; z-index:2; }
.cta-band h2 { color:#fff; max-width:20ch; }
.cta-band p { color:#c7d6e3; max-width:54ch; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-900); color:#9fb2c4; font-size:var(--fs-sm); padding-block: clamp(2.6rem,5vw,3.6rem) 2rem; }
.site-footer .f-top { display:grid; grid-template-columns: 1.4fr repeat(3, 1fr); gap:2rem; padding-bottom:2.2rem; border-bottom:1px solid rgba(255,255,255,.1); }
@media (max-width:780px){ .site-footer .f-top{ grid-template-columns:1fr 1fr; } }
@media (max-width:480px){ .site-footer .f-top{ grid-template-columns:1fr; } }
.site-footer h5 { color:#fff; font-family:var(--sans); font-size:.76rem; letter-spacing:.12em; text-transform:uppercase; margin:0 0 1rem; }
.site-footer a { color:#a9bccd; display:block; padding:.28rem 0; }
.site-footer a:hover{ color:#fff; }
.site-footer .f-brand .brand{ color:#fff; margin-bottom:.8rem; }
.site-footer .f-brand p{ color:#8ba0b4; max-width:34ch; font-size:var(--fs-sm); }
.site-footer .f-bottom { display:flex; justify-content:space-between; gap:1rem; flex-wrap:wrap; padding-top:1.6rem; color:#6f859a; font-size:var(--fs-xs); }
.site-footer .f-bottom a{ display:inline; color:#8ba0b4; }
.f-disclaimer { margin-top:1.2rem; padding-top:1.2rem; border-top:1px solid rgba(255,255,255,.08); color:#6f859a; font-size:var(--fs-xs); max-width:90ch; }

/* ---------- Misc utilities ---------- */
.kicker-line { width:48px; height:3px; background:var(--teal); border-radius:2px; margin-bottom:1.4rem; }
.section--ink .kicker-line{ background:var(--teal-500); }
.mt-0{margin-top:0}.mb-0{margin-bottom:0}
.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mt-3{margin-top:1.5rem}.mt-4{margin-top:2rem}
.mb-2{margin-bottom:1rem}.mb-3{margin-bottom:1.5rem}.mb-4{margin-bottom:2rem}
.maxw-prose{ max-width:var(--maxw-prose); }
.text-muted{ color:var(--muted); }
.fs-sm{ font-size:var(--fs-sm); }
.divider-label { display:flex; align-items:center; gap:1rem; color:var(--faint); font-size:.78rem; letter-spacing:.12em; text-transform:uppercase; font-weight:700; margin: 0 0 1.5rem; }
.divider-label::before,.divider-label::after{ content:""; height:1px; background:var(--line); flex:1; }

/* code block */
.codeflow { font-family:var(--mono); font-size:.86rem; background:var(--navy-850); color:#cfe0ee; border-radius:10px; padding:1.2rem 1.4rem; line-height:1.7; overflow-x:auto; white-space:pre; }
.codeflow .ar{ color:var(--teal-500); }

/* scroll reveal */
.reveal { opacity:0; transform: translateY(16px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.reveal.in { opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){ .reveal{ opacity:1; transform:none; transition:none; } }

/* logo mark */
.mark-svg{ width:34px; height:34px; }
.footer-mark{ width:30px;height:30px; }