/* ==========================================================================
   INTEGRIX HEALTH / PROACTIVEDNA — GLOBAL DESIGN SYSTEM
   "Editorial Sophistication · Scientific Minimalist · High-End Apothecary"
   Zero-dependency stylesheet. No build step. Portable to any host.
   ========================================================================== */

/* ---------- 1. DESIGN TOKENS ---------- */
:root {
  /* Canvas & surface */
  --bone:        #F7F5F0;   /* warm eggshell paper canvas */
  --paper:       #FCFBF8;   /* elevated card surface */
  --bone-deep:   #EFEBE2;   /* recessed band / alternating section */
  --ink:         #16181C;   /* authoritative display headings */
  --slate:       #3A424C;   /* body copy */
  --slate-soft:  #6B7480;   /* meta, captions, labels */
  --copper:      #A9552E;   /* accent / CTA / HEADED metrics */
  --copper-deep: #8A4325;   /* hover state */
  --copper-tint: #F3E6DE;   /* wash fills */
  --rule:        #E3DED3;   /* hairline borders */
  --rule-strong: #CFC7B8;

  /* Type */
  --display: "Playfair Display", "Iowan Old Style", Georgia, serif;
  --body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;

  /* Rhythm */
  --shell: 1180px;
  --shell-narrow: 780px;
  --gut: clamp(20px, 5vw, 40px);
  --section-y: clamp(64px, 9vw, 116px);

  --shadow-card: 0 1px 2px rgba(22,24,28,.04), 0 12px 32px -12px rgba(22,24,28,.10);
  --shadow-lift: 0 2px 4px rgba(22,24,28,.05), 0 28px 60px -24px rgba(22,24,28,.20);
  --radius: 4px;
}

/* ---------- 2. RESET ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bone);
  color: var(--slate);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg, iframe { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; }
a { color: var(--copper); text-decoration: none; }
a:hover { color: var(--copper-deep); }
hr { border: 0; border-top: 1px solid var(--rule); margin: 0; }

/* ---------- 3. TYPE SCALE ---------- */
h1, h2, h3, h4 {
  font-family: var(--display);
  color: var(--ink);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin: 0 0 .5em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.55rem, 5.6vw, 4.4rem); }
h2 { font-size: clamp(2rem, 3.9vw, 3.1rem); }
h3 { font-size: clamp(1.3rem, 2vw, 1.65rem); letter-spacing: -0.03em; }
h4 { font-size: 1.1rem; letter-spacing: -0.02em; }
p  { margin: 0 0 1.15em; }
p:last-child { margin-bottom: 0; }
strong { color: var(--ink); font-weight: 600; }
.lede { font-size: clamp(1.08rem, 1.5vw, 1.3rem); line-height: 1.6; color: var(--slate); }

.eyebrow {
  font-family: var(--body);
  text-transform: uppercase;
  letter-spacing: 0.22em;
  font-weight: 600;
  font-size: .69rem;
  color: var(--copper);
  margin: 0 0 1.1rem;
  display: block;
}
.eyebrow--slate { color: var(--slate-soft); }
.serif-accent { font-family: var(--display); font-style: italic; letter-spacing: -0.03em; }

/* ---------- 4. LAYOUT ---------- */
.shell { width: 100%; max-width: var(--shell); margin: 0 auto; padding: 0 var(--gut); }
.shell--narrow { max-width: var(--shell-narrow); }
.section { padding: var(--section-y) 0; }
.section--tight { padding: clamp(44px, 6vw, 72px) 0; }
.section--paper { background: var(--paper); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.section--deep { background: var(--bone-deep); }
.section--ink { background: var(--ink); color: #C9CDD4; }
.section--ink h2, .section--ink h3, .section--ink h4 { color: var(--paper); }
.section--ink .eyebrow { color: #D08A62; }

.section-head { max-width: 760px; margin-bottom: clamp(36px, 5vw, 60px); }
.section-head--center { margin-left: auto; margin-right: auto; text-align: center; }

.grid { display: grid; gap: clamp(20px, 2.6vw, 32px); }
.grid-2 { grid-template-columns: repeat(2, minmax(0,1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0,1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
.split { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(32px, 5vw, 72px); align-items: center; }

/* ---------- 5. DNA HELIX WATERMARK ---------- */
.helix-field { position: relative; overflow: hidden; isolation: isolate; }
.helix-field > .shell, .helix-field > * { position: relative; z-index: 1; }
.helix-field::before {
  content: "";
  position: absolute; inset: 0; z-index: 0;
  background-image: url("helix.svg");
  background-repeat: repeat;
  background-size: 260px 460px;
  opacity: .5;
  pointer-events: none;
}

/* ---------- 6. BUTTONS ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .55em;
  padding: 1.02em 1.9em;
  font-size: .93rem; font-weight: 600; letter-spacing: .015em;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: background .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
  text-align: center;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--copper); color: #fff; }
.btn--primary:hover { background: var(--copper-deep); color: #fff; }
.btn--ghost { background: transparent; color: var(--ink); border-color: var(--rule-strong); }
.btn--ghost:hover { border-color: var(--ink); color: var(--ink); background: rgba(22,24,28,.02); }
.btn--ink { background: var(--ink); color: var(--paper); }
.btn--ink:hover { background: #000; color: #fff; }
.btn--onink { background: transparent; color: var(--paper); border-color: rgba(252,251,248,.35); }
.btn--onink:hover { background: var(--paper); color: var(--ink); }
.btn--wide { width: 100%; }
.btn--sm { padding: .72em 1.3em; font-size: .82rem; }
.btn-note { font-size: .8rem; color: var(--slate-soft); margin: .85rem 0 0; line-height: 1.5; }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

/* ---------- 7. CARDS & SURFACES ---------- */
.card {
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  padding: clamp(24px, 3vw, 36px);
}
.card--lift { box-shadow: var(--shadow-card); }
.card--copper { border-color: var(--copper); border-width: 1px; }
.card__num {
  font-family: var(--display); font-size: 1.05rem; color: var(--copper);
  border: 1px solid var(--copper); width: 2.1em; height: 2.1em; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center; margin-bottom: 1.1rem;
}
.card h3 { margin-bottom: .5rem; }
.card p { font-size: .97rem; }

.rule-top { border-top: 1px solid var(--rule); padding-top: 1.5rem; }
.hairline { height: 1px; background: var(--rule); margin: clamp(40px,5vw,64px) 0; }

/* ---------- 8. STAT STACK (BUILT / NOW / HEADED) ---------- */
.stat-stack { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 0; border: 1px solid var(--rule); background: var(--paper); }
.stat-stack__item { padding: clamp(26px, 3vw, 40px); border-right: 1px solid var(--rule); }
.stat-stack__item:last-child { border-right: 0; }
.stat-stack__item--headed { background: linear-gradient(180deg, var(--copper-tint) 0%, var(--paper) 62%); }
.stat-stack__key {
  font-family: var(--display); font-size: clamp(2.1rem, 3.4vw, 2.9rem);
  color: var(--ink); letter-spacing: -.05em; line-height: 1; margin: 0 0 .3rem;
}
.stat-stack__item--headed .stat-stack__key { color: var(--copper); }
.stat-stack__q { font-size: .8rem; text-transform: uppercase; letter-spacing: .18em; font-weight: 600; color: var(--slate-soft); margin: 0 0 1.4rem; }
.stat-stack__tool { font-weight: 600; color: var(--ink); font-size: 1rem; margin: 0 0 .45rem; }
.stat-stack__desc { font-size: .93rem; margin: 0; }
.stat-stack__metric { margin-top: 1.3rem; padding-top: 1.1rem; border-top: 1px solid var(--rule); font-size: .82rem; color: var(--slate-soft); }
.stat-stack__metric b { color: var(--copper); font-weight: 600; }

/* ---------- 9. GUARANTEE BANNER ---------- */
.promise {
  border: 1px solid var(--copper);
  border-left-width: 3px;
  background: var(--paper);
  padding: clamp(28px, 3.6vw, 44px);
  display: grid; grid-template-columns: 56px 1fr; gap: clamp(20px, 3vw, 32px);
  align-items: start;
  border-radius: var(--radius);
}
.promise__icon { width: 56px; height: 56px; color: var(--copper); }
.promise h3 { margin-bottom: .55rem; }
.promise p { font-size: 1.02rem; margin-bottom: 0; }

/* ---------- 10. DATA TABLE (editorial, border-collapse) ---------- */
.data-table { width: 100%; border-collapse: collapse; font-size: .93rem; background: var(--paper); }
.data-table caption { text-align: left; font-size: .72rem; text-transform: uppercase; letter-spacing: .2em; font-weight: 600; color: var(--slate-soft); padding-bottom: .9rem; }
.data-table th, .data-table td { text-align: left; padding: .92em 1.1em; border: 1px solid var(--rule); vertical-align: top; }
.data-table thead th { background: var(--bone-deep); color: var(--ink); font-weight: 600; font-size: .74rem; text-transform: uppercase; letter-spacing: .13em; }
.data-table tbody th { font-weight: 600; color: var(--ink); width: 30%; }
.data-table td b { color: var(--copper); }
.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

/* ---------- 11. CHECK LISTS ---------- */
.ticks { list-style: none; margin: 0; padding: 0; }
.ticks li { position: relative; padding: 0 0 .95rem 1.85rem; font-size: .97rem; }
.ticks li::before {
  content: ""; position: absolute; left: 0; top: .52em;
  width: 9px; height: 9px; border: 1.5px solid var(--copper); border-radius: 50%;
}
.ticks li:last-child { padding-bottom: 0; }
.ticks--tight li { padding-bottom: .6rem; }
.ticks li b, .ticks li strong { color: var(--ink); }

.numbered { counter-reset: n; list-style: none; margin: 0; padding: 0; }
.numbered li { counter-increment: n; position: relative; padding: 0 0 1.5rem 3.1rem; }
.numbered li::before {
  content: counter(n, decimal-leading-zero);
  position: absolute; left: 0; top: .05em;
  font-family: var(--display); color: var(--copper); font-size: 1.05rem;
}

/* ---------- 12. PRICE / OFFER CARDS ---------- */
.price-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: clamp(18px,2vw,26px); align-items: stretch; }
.price-grid--4 { grid-template-columns: repeat(4, minmax(0,1fr)); }
@media (max-width: 1100px) { .price-grid--4 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
.price-card {
  background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: clamp(26px,3vw,36px); display: flex; flex-direction: column; position: relative;
}
.price-card--featured { border-color: var(--copper); box-shadow: var(--shadow-card); }
.price-card__flag {
  position: absolute; top: -1px; right: 22px; transform: translateY(-50%);
  background: var(--copper); color: #fff; font-size: .64rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .16em; padding: .45em .9em; border-radius: 2px;
}
.price-card__label { font-size: .72rem; text-transform: uppercase; letter-spacing: .18em; font-weight: 600; color: var(--slate-soft); margin: 0 0 1rem; }
.price-card__amount { font-family: var(--display); font-size: clamp(2.1rem,3.2vw,2.7rem); color: var(--ink); letter-spacing: -.05em; line-height: 1; margin: 0 0 .35rem; }
.price-card__amount span { font-size: .95rem; font-family: var(--body); color: var(--slate-soft); letter-spacing: 0; }
.price-card__sub { font-size: .88rem; color: var(--slate-soft); margin: 0 0 1.4rem; }
.price-card .ticks { margin-bottom: 1.8rem; }
.price-card .ticks li { font-size: .9rem; }
.price-card__cta { margin-top: auto; }

/* ---------- 13. ACCORDION (IFM NODES / FAQ) ---------- */
.accordion { border-top: 1px solid var(--rule); }
.acc-item { border-bottom: 1px solid var(--rule); background: var(--paper); }
.acc-btn {
  width: 100%; background: none; border: 0; text-align: left;
  padding: 1.35em 3em 1.35em 1.4em; position: relative;
  display: flex; align-items: baseline; gap: 1em;
  font-family: var(--display); font-size: clamp(1.05rem,1.6vw,1.3rem); color: var(--ink);
  letter-spacing: -.03em;
}
.acc-btn:hover { background: var(--bone-deep); }
.acc-btn__idx { font-family: var(--body); font-size: .7rem; font-weight: 700; letter-spacing: .16em; color: var(--copper); flex: none; }
.acc-btn::after {
  content: ""; position: absolute; right: 1.4em; top: 50%;
  width: 10px; height: 10px; margin-top: -6px;
  border-right: 1.5px solid var(--copper); border-bottom: 1.5px solid var(--copper);
  transform: rotate(45deg); transition: transform .22s ease;
}
.acc-btn[aria-expanded="true"]::after { transform: rotate(-135deg); margin-top: -2px; }
.acc-panel { display: none; padding: 0 1.4em 1.7em 1.4em; }
.acc-panel.is-open { display: block; }
.acc-panel > *:first-child { margin-top: 0; }
.acc-panel p, .acc-panel li { font-size: .96rem; }
.acc-panel .node-meta { font-size: .78rem; text-transform: uppercase; letter-spacing: .16em; font-weight: 600; color: var(--slate-soft); margin-bottom: .8rem; }

/* ---------- 14. HEADER / NAV ---------- */
.announce {
  background: var(--ink); color: #C9CDD4;
  font-size: .77rem; letter-spacing: .03em; text-align: center;
  padding: .72em var(--gut);
}
.announce b { color: #E0BBA5; font-weight: 600; }
.announce a { color: #E0BBA5; }
.announce .dot { color: #5A6068; margin: 0 .55em; }

.masthead {
  position: sticky; top: 0; z-index: 60;
  background: rgba(247,245,240,.93);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--rule);
}
.masthead__inner { display: flex; align-items: center; justify-content: space-between; gap: 24px; min-height: 74px; }
.brand { display: flex; align-items: center; gap: 12px; }
.brand__mark { width: 30px; height: 30px; flex: none; color: var(--copper); }
.brand__name { font-family: var(--display); font-size: 1.22rem; color: var(--ink); letter-spacing: -.035em; line-height: 1.05; }
.brand__sub { display: block; font-family: var(--body); font-size: .58rem; text-transform: uppercase; letter-spacing: .24em; color: var(--slate-soft); font-weight: 600; margin-top: 3px; }

.nav { display: flex; align-items: center; gap: 6px; }
.nav a, .nav > .has-drop > button {
  color: var(--slate); font-size: .88rem; font-weight: 500;
  padding: .6em .85em; border-radius: 3px; background: none; border: 0; display: inline-flex; align-items: center; gap: .4em;
}
.nav a:hover, .nav > .has-drop > button:hover { color: var(--ink); background: rgba(22,24,28,.045); }
.nav a[aria-current="page"] { color: var(--ink); font-weight: 600; }
.has-drop { position: relative; }
.has-drop > button::after {
  content: ""; width: 6px; height: 6px; border-right: 1.4px solid currentColor; border-bottom: 1.4px solid currentColor;
  transform: rotate(45deg) translateY(-2px); transition: transform .2s ease;
}
.has-drop > button[aria-expanded="true"]::after { transform: rotate(-135deg) translateY(-2px); }
.drop {
  position: absolute; top: calc(100% + 10px); left: 50%; transform: translateX(-50%);
  min-width: 344px; background: var(--paper); border: 1px solid var(--rule);
  box-shadow: var(--shadow-lift); border-radius: var(--radius); padding: 8px; display: none;
}
.drop.is-open { display: block; }
.drop a {
  display: flex; justify-content: space-between; align-items: baseline; gap: 18px;
  padding: .78em .85em; border-radius: 3px; width: 100%;
}
.drop a:hover { background: var(--bone-deep); }
.drop__name { color: var(--ink); font-weight: 600; font-size: .92rem; }
.drop__name small { display: block; font-weight: 400; color: var(--slate-soft); font-size: .78rem; margin-top: 2px; letter-spacing: 0; }
.drop__price { color: var(--copper); font-weight: 600; font-size: .85rem; white-space: nowrap; flex: none; }

.nav-cta { margin-left: 10px; }
.burger { display: none; background: none; border: 1px solid var(--rule-strong); border-radius: 3px; padding: .55em .75em; }
.burger svg { width: 20px; height: 14px; color: var(--ink); }

/* ---------- 15. FOOTER ---------- */
.footer { background: var(--ink); color: #98A0AB; padding: clamp(56px,7vw,84px) 0 34px; font-size: .89rem; }
.footer a { color: #C9CDD4; }
.footer a:hover { color: #fff; }
.footer h4 { color: var(--paper); font-family: var(--body); font-size: .7rem; text-transform: uppercase; letter-spacing: .2em; font-weight: 600; margin-bottom: 1.2rem; }
.footer__grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1.35fr; gap: clamp(28px,4vw,52px); }
.footer__brand .brand__name { color: var(--paper); }
.footer__brand .brand__mark { color: #D08A62; }
.footer ul { list-style: none; margin: 0; padding: 0; }
.footer li { margin-bottom: .65rem; }
.footer__legal { margin-top: clamp(40px,5vw,60px); padding-top: 26px; border-top: 1px solid #2A2E35; font-size: .78rem; line-height: 1.65; color: #757D88; }
.footer__legal p { margin-bottom: .9em; }
.footer__legal strong { color: #B0B7C1; }
.footer__meta { display: flex; flex-wrap: wrap; gap: 8px 22px; justify-content: space-between; align-items: center; margin-top: 22px; }

/* ---------- 16. INTEGRATION PLACEHOLDERS ---------- */
.embed-slot {
  border: 1px dashed var(--rule-strong);
  background: var(--paper);
  border-radius: var(--radius);
  padding: clamp(28px,4vw,48px);
  text-align: center;
}
.embed-slot__tag {
  display: inline-block; font-size: .64rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .18em; color: var(--copper); background: var(--copper-tint);
  padding: .45em .85em; border-radius: 2px; margin-bottom: 1.1rem;
}
.embed-slot code { font-size: .8rem; background: var(--bone-deep); padding: .2em .5em; border-radius: 2px; color: var(--slate); font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.embed-slot p { font-size: .9rem; color: var(--slate-soft); margin-bottom: 0; }

.vsl {
  position: relative; aspect-ratio: 16/9; background: var(--ink);
  border-radius: var(--radius); overflow: hidden;
  display: flex; align-items: center; justify-content: center; flex-direction: column;
  border: 1px solid #2A2E35; text-align: center; padding: 24px;
}
.vsl__play {
  width: 74px; height: 74px; border-radius: 50%; background: var(--copper);
  display: flex; align-items: center; justify-content: center; margin-bottom: 1.3rem;
  transition: transform .2s ease, background .2s ease;
}
.vsl:hover .vsl__play { transform: scale(1.06); background: var(--copper-deep); }
.vsl__play svg { width: 22px; height: 26px; color: #fff; margin-left: 4px; }
.vsl__title { font-family: var(--display); color: var(--paper); font-size: clamp(1.1rem,2vw,1.5rem); letter-spacing: -.03em; margin: 0 0 .35rem; }
.vsl__meta { font-size: .76rem; text-transform: uppercase; letter-spacing: .2em; color: #8A929C; margin: 0; }

/* ---------- 17. TRUST BAR ---------- */
.trustbar { display: flex; flex-wrap: wrap; gap: 10px 0; align-items: center; }
.trustbar span {
  font-size: .74rem; text-transform: uppercase; letter-spacing: .14em; font-weight: 600;
  color: var(--slate-soft); padding: 0 1.15em; border-left: 1px solid var(--rule-strong);
}
.trustbar span:first-child { padding-left: 0; border-left: 0; }

/* ---------- 18. QUOTE / CASE STUDY ---------- */
.case {
  display: grid; grid-template-columns: 1fr 300px; gap: clamp(28px,4vw,52px);
  background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius);
  padding: clamp(28px,4vw,52px); align-items: center;
}
.gauge { text-align: center; }
.gauge__row { display: flex; align-items: flex-end; justify-content: center; gap: 18px; }
.gauge__val { font-family: var(--display); font-size: 2.7rem; letter-spacing: -.05em; line-height: 1; color: var(--slate-soft); }
.gauge__val--after { color: var(--copper); font-size: 3.4rem; }
.gauge__cap { font-size: .68rem; text-transform: uppercase; letter-spacing: .18em; font-weight: 600; color: var(--slate-soft); margin-top: .5rem; }
.gauge__arrow { color: var(--copper); font-size: 1.4rem; padding-bottom: .5rem; }
.gauge__label { font-size: .72rem; text-transform: uppercase; letter-spacing: .2em; font-weight: 600; color: var(--slate-soft); margin: 1.3rem 0 0; }

blockquote.pull {
  margin: 0; font-family: var(--display); font-size: clamp(1.25rem,2.2vw,1.7rem);
  line-height: 1.4; letter-spacing: -.03em; color: var(--ink); font-style: italic;
}
.attrib { font-size: .8rem; text-transform: uppercase; letter-spacing: .16em; font-weight: 600; color: var(--slate-soft); margin-top: 1.4rem; }

/* ---------- 19. FORM / SCREENER ---------- */
.screener { background: var(--paper); border: 1px solid var(--rule); border-radius: var(--radius); box-shadow: var(--shadow-card); }
.screener__bar { display: flex; border-bottom: 1px solid var(--rule); }
.screener__step {
  flex: 1; padding: .95em 1em; text-align: center; font-size: .7rem; text-transform: uppercase;
  letter-spacing: .16em; font-weight: 600; color: var(--slate-soft); border-right: 1px solid var(--rule);
  background: var(--bone-deep);
}
.screener__step:last-child { border-right: 0; }
.screener__step.is-active { background: var(--paper); color: var(--copper); }
.screener__step.is-done { background: var(--paper); color: var(--ink); }
.screener__body { padding: clamp(26px,3.6vw,44px); }
.q { display: none; }
.q.is-active { display: block; animation: fade .28s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.q__num { font-size: .7rem; text-transform: uppercase; letter-spacing: .2em; font-weight: 600; color: var(--copper); margin-bottom: .7rem; }
.q__title { font-family: var(--display); font-size: clamp(1.35rem,2.4vw,1.85rem); color: var(--ink); letter-spacing: -.035em; line-height: 1.2; margin: 0 0 1.6rem; }

.opt { display: block; margin-bottom: 10px; }
.opt input { position: absolute; opacity: 0; width: 0; height: 0; }
.opt span {
  display: block; padding: 1em 1.2em; border: 1px solid var(--rule); border-radius: var(--radius);
  background: var(--bone); font-size: .96rem; color: var(--slate); transition: all .16s ease;
}
.opt:hover span { border-color: var(--rule-strong); background: var(--paper); }
.opt input:checked + span { border-color: var(--copper); background: var(--copper-tint); color: var(--ink); font-weight: 500; }
.opt input:focus-visible + span { outline: 2px solid var(--copper); outline-offset: 2px; }

.slider-wrap { padding: .5rem 0 0; }
input[type=range] { width: 100%; accent-color: var(--copper); height: 28px; }
.slider-out { font-family: var(--display); font-size: 3rem; color: var(--copper); letter-spacing: -.05em; text-align: center; line-height: 1; margin-bottom: .3rem; }
.slider-legend { display: flex; justify-content: space-between; font-size: .74rem; text-transform: uppercase; letter-spacing: .14em; color: var(--slate-soft); font-weight: 600; }

.screener__nav { display: flex; justify-content: space-between; align-items: center; gap: 14px; margin-top: 2rem; padding-top: 1.5rem; border-top: 1px solid var(--rule); }
.link-back { background: none; border: 0; color: var(--slate-soft); font-size: .85rem; padding: .5em 0; }
.link-back:hover { color: var(--ink); }
.link-back[hidden] { visibility: hidden; }

/* ---------- 20. MISC ---------- */
.flag {
  display: inline-flex; align-items: center; gap: .5em;
  font-size: .7rem; text-transform: uppercase; letter-spacing: .16em; font-weight: 700;
  color: var(--copper); background: var(--copper-tint); padding: .5em .9em; border-radius: 2px;
}
.kv { display: grid; grid-template-columns: auto 1fr; gap: .4rem 1.4rem; font-size: .93rem; }
.kv dt { font-weight: 600; color: var(--ink); }
.kv dd { margin: 0; }
.small { font-size: .82rem; color: var(--slate-soft); line-height: 1.6; }
.center { text-align: center; }
.mt-lg { margin-top: clamp(32px,4vw,52px); }
.mt-md { margin-top: clamp(20px,2.6vw,32px); }
.mb-0 { margin-bottom: 0; }
.skip {
  position: absolute; left: -9999px; top: 0; background: var(--ink); color: #fff;
  padding: 1em 1.4em; z-index: 100;
}
.skip:focus { left: 0; color: #fff; }
:focus-visible { outline: 2px solid var(--copper); outline-offset: 3px; }

/* ---------- 21. RESPONSIVE ---------- */
@media (max-width: 1040px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .case { grid-template-columns: 1fr; }
}
@media (max-width: 900px) {
  .nav {
    display: none; position: absolute; top: 100%; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 2px;
    background: var(--paper); border-bottom: 1px solid var(--rule);
    padding: 12px var(--gut) 22px; box-shadow: var(--shadow-lift);
  }
  .nav.is-open { display: flex; }
  .nav a, .nav > .has-drop > button { padding: .85em .4em; width: 100%; justify-content: space-between; font-size: .98rem; }
  .drop { position: static; transform: none; min-width: 0; box-shadow: none; border: 0; border-left: 1px solid var(--rule); border-radius: 0; margin: 2px 0 8px 6px; padding: 0 0 0 8px; background: none; }
  .nav-cta { margin: 10px 0 0; }
  .burger { display: inline-flex; }
  .split, .grid-2, .grid-3, .grid-4, .price-grid, .stat-stack { grid-template-columns: 1fr; }
  .stat-stack__item { border-right: 0; border-bottom: 1px solid var(--rule); }
  .stat-stack__item:last-child { border-bottom: 0; }
  .promise { grid-template-columns: 1fr; }
}
@media (max-width: 620px) {
  body { font-size: 16px; }
  .footer__grid { grid-template-columns: 1fr; }
  .grid-4 { grid-template-columns: 1fr; }
  .screener__step { font-size: .58rem; letter-spacing: .1em; padding: .8em .4em; }
  .trustbar span { border-left: 0; padding: 0 1.1em 0 0; }
}
@media print {
  .masthead, .announce, .burger { position: static; }
  body { background: #fff; }
}