/* Longevity Ratio v3 · light "cellular" direction, turquoise palette from direction B. Logical properties throughout so dir="rtl" mirrors the layout. */
:root {
  --bg: #F7FAFA; --surface: #FFFFFF; --ink: #0B0F0E; --muted: #52605B; --line: #DFE7E5; --line-soft: #EDF2F1;
  --teal: #0E7A6A; --teal-ink: #0A5E52; --turq: #14B8A6; --aqua: #5EEAD4; --cyan: #A5F3FC; --teal-soft: #E2F5F1; --glass: rgba(255,255,255,.72);
  --logo-bar: #fff;
  --accent: var(--teal); --accent-soft: var(--teal-soft); --paper: var(--bg);
  --f-display: "Inter Tight", "Inter", system-ui, sans-serif; --f-body: "Inter", system-ui, sans-serif; --f-num: "IBM Plex Mono", ui-monospace, monospace;
  --r: 14px; --wrap: 1200px; --gut: max(16px, env(safe-area-inset-left, 0px));
  --shadow: 0 1px 2px rgba(11,15,14,.04), 0 8px 28px rgba(14,122,106,.07);
  color-scheme: light;
}
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 76px; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 16px/1.6 var(--f-body); }
img, svg { max-width: 100%; }
[hidden] { display: none !important; }
a { color: var(--teal-ink); text-underline-offset: 3px; }
a:hover { color: var(--ink); }
:focus-visible { outline: 2px solid var(--turq); outline-offset: 3px; border-radius: 4px; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; inset-inline-start: 12px; inset-block-start: -60px; background: var(--ink); color: #fff; padding: 8px 12px; z-index: 50; border-radius: 6px; }
.skip:focus { inset-block-start: 12px; }
.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gut); }
h1, h2, h3 { font-family: var(--f-display); font-weight: 600; letter-spacing: -.008em; line-height: 1.08; margin: 0; text-wrap: balance; }
h1 { font-size: clamp(36px, 6vw, 64px); }
h2 { font-size: clamp(26px, 3.4vw, 38px); }
h3 { font-size: 20px; letter-spacing: 0; }
p { margin: 0; }
.eyebrow { font: 500 12px/1.4 var(--f-num); letter-spacing: .08em; text-transform: uppercase; color: var(--teal); }
.lede { font-size: 18px; color: var(--muted); max-width: 62ch; }
.note { font: 400 12.5px/1.55 var(--f-body); color: var(--muted); }
.num { font-family: var(--f-num); font-variant-numeric: tabular-nums; }
.grad { background: linear-gradient(100deg, var(--teal) 10%, var(--turq) 60%, #0891B2); -webkit-background-clip: text; background-clip: text; color: transparent; }

/* cellular backdrop: soft gradient fields + thin membranes, purely decorative */
.cells { position: relative; isolation: isolate; overflow: hidden;
  background: radial-gradient(55% 70% at 88% 8%, rgba(94,234,212,.38), transparent 62%),
              radial-gradient(45% 60% at 4% 96%, rgba(165,243,252,.55), transparent 60%),
              radial-gradient(35% 45% at 50% 50%, rgba(226,245,241,.9), transparent 70%),
              linear-gradient(180deg, #F1FBF9 0%, #FFFFFF 100%); }
.cells > .membranes { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }
.membranes circle { fill: none; stroke: rgba(14,122,106,.13); stroke-width: 1.2; }
.membranes .nu { fill: rgba(20,184,166,.12); stroke: none; }
.membranes .fill { fill: url(#cellfill); stroke: rgba(20,184,166,.18); }
@media (prefers-reduced-motion: no-preference) {
  .membranes g { animation: drift 26s ease-in-out infinite alternate; transform-origin: center; }
  .membranes g:nth-child(2n) { animation-duration: 34s; animation-direction: alternate-reverse; }
  @keyframes drift { from { transform: translate(0, 0); } to { transform: translate(14px, -10px); } }
}

/* header */
.site-head { position: sticky; top: 0; z-index: 20; background: rgba(255,255,255,.8); backdrop-filter: blur(14px) saturate(1.4); -webkit-backdrop-filter: blur(14px) saturate(1.4); border-block-end: 1px solid var(--line); }
.head-row { display: flex; align-items: center; gap: 20px; min-height: 64px; }
.logo svg { flex: none; }
.logo { display: inline-flex; align-items: center; gap: 9px; color: var(--teal); text-decoration: none; font: 600 17px var(--f-display); letter-spacing: -.02em; }
.logo span { color: var(--ink); } .logo b { color: var(--teal); font-weight: 600; }
.nav { display: flex; gap: 26px; list-style: none; margin: 0; padding: 0; }
.nav a { color: var(--ink); text-decoration: none; font-size: 15px; font-weight: 500; padding-block: 6px; border-block-end: 2px solid transparent; }
.nav a:hover, .nav a[aria-current] { border-color: var(--turq); }
.head-row nav { margin-inline-start: auto; }
.menu { display: none; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; width: 42px; height: 42px; padding: 0; cursor: pointer; flex-direction: column; align-items: center; justify-content: center; gap: 5px; }
.menu i { display: block; width: 18px; height: 2px; background: var(--ink); }
@media (max-width: 860px) {
  .menu { display: inline-flex; }
  .head-cta { margin-inline-start: auto; }
  .head-row nav { margin: 0; }
  .nav { display: none; position: absolute; inset-inline: 0; inset-block-start: 64px; flex-direction: column; gap: 0; background: #fff; border-block-end: 1px solid var(--line); padding: 8px var(--gut) 16px; }
  .nav.open { display: flex; }
  .nav a { display: block; padding-block: 12px; border: 0; border-block-end: 1px solid var(--line-soft); font-size: 17px; }
}
@media (max-width: 520px) { .site-head .head-cta { display: none; } .menu { margin-inline-start: auto; } }

/* buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: 600 15px var(--f-body); background: var(--teal); color: #fff; border: 1px solid var(--teal); border-radius: 999px; padding: 12px 22px; text-decoration: none; cursor: pointer; transition: background .15s, box-shadow .15s; box-shadow: 0 6px 18px rgba(14,122,106,.18); }
.btn:hover { background: var(--teal-ink); color: #fff; box-shadow: 0 8px 24px rgba(14,122,106,.26); }
.btn-sm { padding: 8px 16px; font-size: 14px; box-shadow: none; }
.btn-ghost { background: var(--glass); color: var(--teal-ink); border-color: var(--line); box-shadow: none; }
.btn-ghost:hover { background: #fff; color: var(--teal-ink); border-color: var(--turq); box-shadow: none; }

/* sections */
.sec { padding-block: clamp(48px, 7vw, 88px); }
.sec + .sec { border-block-start: 1px solid var(--line-soft); }
.sec-head { display: grid; gap: 12px; margin-block-end: 28px; max-width: 760px; }
.page-top { margin-block-end: 8px; }
.page-hero { padding-block: clamp(40px, 6vw, 72px) 36px; display: grid; gap: 16px; max-width: 860px; }
.crumbs { font: 12.5px var(--f-num); color: var(--muted); }
.crumbs a { color: var(--muted); }

/* hero (light, cellular) */
.hero-grid { display: grid; gap: 36px; padding-block: clamp(44px, 7vw, 92px) clamp(36px, 5vw, 64px); }
.hero h1 { max-width: 16ch; font-size: clamp(38px, 5.4vw, 64px); }
.hero-ctas { display: flex; flex-wrap: wrap; gap: 12px; }
.swarm { background: var(--glass); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,.9); box-shadow: var(--shadow); border-radius: var(--r); padding: 18px 18px 12px; }
.swarm svg { display: block; width: 100%; height: auto; overflow: visible; }
.swarm .sw-m { display: none; }
@media (max-width: 640px) { .swarm .sw-d { display: none; } .swarm .sw-m { display: block; } }
.swarm .ax { stroke: #D3DEDB; stroke-dasharray: 2 4; }
.swarm .tk { fill: var(--muted); font: 14px var(--f-num); }
.swarm .an { fill: var(--ink); font: 600 16px var(--f-body); }
.swarm .an2 { fill: var(--teal-ink); font: 600 14px var(--f-num); }
.swarm .br { stroke: var(--ink); }
.swarm circle { stroke: #fff; stroke-width: 2; }
.swarm .cap { font: 12px var(--f-num); color: var(--muted); margin-block-start: 8px; }
@media (prefers-reduced-motion: no-preference) {
  .swarm circle { animation: pop .6s cubic-bezier(.2,.9,.3,1.3) both; transform-box: fill-box; transform-origin: center; }
  @keyframes pop { from { transform: scale(.3); } to { transform: none; } }
}
@media (min-width: 980px) { .hero-grid { grid-template-columns: 1fr 1fr; align-items: center; } }

/* stats band */
.stats { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1px; background: var(--line-soft); border-block: 1px solid var(--line-soft); }
.stat { padding: 22px var(--gut); background: #fff; }
.stat b { display: block; font: 600 clamp(26px, 3.2vw, 36px)/1.1 var(--f-display); letter-spacing: -.005em; font-variant-numeric: tabular-nums; color: var(--teal); }
.stat span { font-size: 13px; color: var(--muted); }
@media (min-width: 860px) { .stats { grid-template-columns: repeat(4, 1fr); } }

/* trust strip */
.pledges { display: flex; flex-wrap: wrap; gap: 10px 26px; font-size: 14px; color: var(--muted); padding-block: 16px; }
.pledges span::before { content: ""; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--turq); box-shadow: 0 0 0 4px var(--teal-soft); margin-inline-end: 10px; vertical-align: 1px; }
.pledges a { margin-inline-start: auto; font-size: 13px; }

/* chips + controls */
.controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-block-end: 18px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { font: 500 13.5px var(--f-body); border: 1px solid var(--line); background: #fff; color: var(--ink); border-radius: 999px; padding: 7px 14px; cursor: pointer; text-decoration: none; }
.chip:hover { border-color: var(--turq); color: var(--ink); }
.chip[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: #fff; }
.views { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-block-end: 22px; }
.views .lab { font: 500 12px var(--f-num); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-inline-end: 4px; }
.views .chip { background: var(--teal-soft); border-color: transparent; color: var(--teal-ink); }
.views .chip:hover { border-color: var(--turq); }
.field { font: inherit; font-size: 14px; color: var(--ink); background: #fff; border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; min-height: 40px; }
.ctrl-row { display: flex; flex-wrap: wrap; gap: 10px; margin-inline-start: auto; }
.ctrl-row label { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); }

/* index table with inline scale -> cards on mobile */
.tbl-wrap { background: #fff; border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; box-shadow: var(--shadow); }
table.ix { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.ix th { text-align: start; font: 500 11px var(--f-num); letter-spacing: .07em; text-transform: uppercase; color: var(--muted); padding: 12px 14px; border-block-end: 1px solid var(--line); background: #FAFCFC; }
.ix td { padding: 14px; border-block-end: 1px solid var(--line-soft); vertical-align: top; }
.ix tbody tr:hover { background: #FAFDFC; }
.ix tr:last-child td { border-block-end: 0; }
.ix .o b { display: block; font-weight: 600; }
.ix .o a { color: var(--ink); text-decoration: none; }
.ix .o a:hover { color: var(--teal-ink); text-decoration: underline; }
.ix .o span { color: var(--muted); font-size: 13px; }
.ix .o .tag { margin-block-start: 6px; }
.tag { display: inline-block; font: 500 11.5px var(--f-num); background: var(--teal-soft); color: var(--teal-ink); border-radius: 6px; padding: 3px 8px; white-space: nowrap; }
.ix .p { white-space: nowrap; }
.px { font: 600 15px var(--f-num); font-variant-numeric: tabular-nums; }
.px.na { color: var(--muted); font-weight: 500; }
.ix .p small, .pc small { display: block; font: 12px var(--f-num); color: var(--muted); }
.ix .inc { color: var(--muted); font-size: 13.5px; max-width: 42ch; }
.ix .s a { font-size: 12.5px; color: var(--muted); }
.ix .sc { width: 170px; padding-block-start: 20px; }
.ix th.sc { padding-block-start: 12px; }
.ix th.sc span { display: flex; justify-content: space-between; text-transform: none; letter-spacing: 0; }
.mb { position: relative; display: block; height: 10px; border-radius: 99px; background: linear-gradient(90deg, var(--line-soft) 0 100%); }
.mb i { position: absolute; top: 0; height: 10px; border-radius: 99px; }
.mb .bar { background: linear-gradient(90deg, var(--aqua), var(--turq)); opacity: .55; }
.mb .dt { width: 10px; margin-inline-start: -5px; background: var(--teal); box-shadow: 0 0 0 2px #fff; }
.mb .dt.cap { background: #fff; box-shadow: inset 0 0 0 2px var(--teal); }
.empty { padding: 28px; text-align: center; color: var(--muted); }
.ix .o .loc { display: block; font-size: 12.5px; }
.ix .det { display: none; }
.ix tr.grp th { text-align: start; font: 600 13px var(--f-body); color: var(--ink); background: var(--teal-soft); padding: 10px 14px; letter-spacing: 0; text-transform: none; }
.ix tr.grp th span { font-weight: 400; color: var(--muted); }
.empty { padding: 32px 20px; text-align: center; color: var(--muted); display: grid; gap: 12px; justify-items: center; }
.empty[hidden] { display: none; }
@media (max-width: 860px) {
  .ix thead { display: none; }
  .ix, .ix tbody, .ix tr, .ix td, .ix th { display: block; width: 100%; }
  .ix tr { padding: 16px; border-block-end: 1px solid var(--line); display: grid; grid-template-columns: 1fr auto; gap: 10px 12px; }
  .ix tr[hidden] { display: none; }
  .ix tr.grp { padding: 0; }
  .ix td { padding: 0; border: 0; }
  .ix .o { grid-column: 1; } .ix .p { grid-column: 2; grid-row: 1; text-align: end; }
  .ix .sc, .ix .inc, .ix .s { display: none; }
  .ix .det { display: block; grid-column: 1 / -1; }
  .ix .det .btn { width: 100%; }
}

/* finder: one sticky search bar */
.finder { position: sticky; top: 64px; z-index: 15; display: grid; gap: 10px 12px; grid-template-columns: repeat(3, 1fr); align-items: end;
  background: rgba(247,250,250,.9); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); margin-inline: calc(var(--gut) * -1); padding: 12px var(--gut); margin-block-end: 14px; border-block-end: 1px solid var(--line-soft); }
.finder label { display: block; font: 500 11.5px var(--f-num); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); margin-block-end: 4px; }
.finder .field { width: 100%; }
.f-search { grid-column: 1 / -1; }
.f-search .field { font-size: 16px; min-height: 48px; padding-inline: 42px 14px; border-radius: 999px; border-color: #C9D6D2;
  background: #fff url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' fill='none' stroke='%2352605B' stroke-width='2'%3E%3Ccircle cx='8' cy='8' r='6'/%3E%3Cpath d='M12.5 12.5L17 17'/%3E%3C/svg%3E") no-repeat 16px 50%; }
[dir="rtl"] .f-search .field { background-position: calc(100% - 16px) 50%; }
.f-search .field:focus { border-color: var(--turq); outline: 3px solid rgba(20,184,166,.18); outline-offset: 0; }
.f-meta { grid-column: 1 / -1; display: flex; gap: 14px; align-items: center; font-size: 13px; color: var(--muted); }
.lnk { background: none; border: 0; padding: 0; font: 500 13px var(--f-body); color: var(--teal-ink); text-decoration: underline; text-underline-offset: 3px; cursor: pointer; }
.lnk:hover { color: var(--ink); }
@media (max-width: 640px) { .finder { grid-template-columns: repeat(3, 1fr); gap: 6px 8px; padding-block: 10px; } .finder label { font-size: 10.5px; margin-block-end: 2px; } .finder .field { font-size: 13px; min-height: 38px; padding-inline: 8px 4px; } .f-search .field { font-size: 16px; min-height: 44px; padding-inline: 42px 14px; } .f-meta { font-size: 12.5px; } }
@media (min-width: 980px) {
  .finder { grid-template-columns: minmax(280px, 2.2fr) 1.2fr 1.2fr 1fr auto; }
  .f-search, .f-meta { grid-column: auto; }
  .f-meta { flex-direction: column; align-items: flex-start; gap: 2px; min-width: 110px; padding-block-end: 6px; }
}

/* header Guides dropdown */
.dd { position: relative; }
.dd-btn { display: inline-flex; align-items: center; gap: 6px; background: none; border: 0; border-block-end: 2px solid transparent; padding: 6px 0; font: 500 15px var(--f-body); color: var(--ink); cursor: pointer; }
.dd-btn:hover, .dd-btn[data-current] { border-color: var(--turq); }
.dd-btn[aria-expanded="true"] svg { transform: rotate(180deg); }
.dd-menu { display: none; position: absolute; inset-block-start: calc(100% + 10px); inset-inline-start: -14px; min-width: 230px; list-style: none; margin: 0; padding: 6px; background: #fff; border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 12px 32px rgba(11,15,14,.1); z-index: 30; }
.dd-menu.open { display: block; }
.dd-menu a { display: block; padding: 9px 12px; border-radius: 8px; border: 0; font-size: 14.5px; }
.dd-menu a:hover, .dd-menu a:focus-visible { background: var(--teal-soft); }
@media (max-width: 860px) {
  .dd-btn { display: block; width: 100%; text-align: start; pointer-events: none; padding-block: 12px 4px; font: 500 12px var(--f-num); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); border: 0; }
  .dd-btn svg { display: none; }
  .dd-menu { display: block; position: static; box-shadow: none; border: 0; padding: 0 0 0 14px; min-width: 0; background: none; }
  .dd-menu a { padding-block: 10px; font-size: 15.5px; border-radius: 0; border-block-end: 1px solid var(--line-soft); }
}

/* checklist */
.check { display: grid; gap: 10px; }
.check label { display: grid; grid-template-columns: 26px 1fr; gap: 12px; align-items: start; background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 16px; cursor: pointer; }
.check input { width: 20px; height: 20px; accent-color: var(--teal); margin: 2px 0 0; }
.check b { display: block; font-weight: 600; }
.check span { color: var(--muted); font-size: 14.5px; }
.check label:has(input:checked) { border-color: var(--turq); background: var(--teal-soft); }
.split { display: grid; gap: 32px; }
@media (min-width: 980px) { .split { grid-template-columns: 5fr 7fr; align-items: start; } }

/* newsletter */
.news { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: clamp(22px, 4vw, 40px); display: grid; gap: 24px; box-shadow: var(--shadow); }
.news ul { margin: 0; padding-inline-start: 20px; color: var(--muted); display: grid; gap: 6px; }
.bh { display: block; width: 100%; height: 230px; max-width: 100%; border: 0; background: transparent; }
@media (min-width: 900px) { .news { grid-template-columns: 1fr 1fr; align-items: center; } }

/* score teaser */
.teaser { display: grid; gap: 28px; align-items: center; }
.teaser-card { background: linear-gradient(150deg, #fff 0%, #ECFBF8 60%, #DDF6FB 100%); border: 1px solid var(--line); box-shadow: var(--shadow); border-radius: var(--r); padding: 28px; display: grid; gap: 12px; max-width: 420px; }
.teaser-card .big { font: 600 72px/1 var(--f-display); letter-spacing: -.015em; color: var(--ink); }
.teaser-card .big small { font-size: 22px; color: var(--muted); }
.teaser-card .bar { height: 8px; border-radius: 99px; background: var(--line-soft); overflow: hidden; }
.teaser-card .bar i { display: block; height: 100%; width: 72%; background: linear-gradient(90deg, var(--teal), var(--aqua)); border-radius: 99px; }
.teaser-card p { font-size: 14px; color: var(--muted); }
@media (min-width: 900px) { .teaser { grid-template-columns: 7fr 5fr; } }

/* pro (light gradient panel) */
.pro { padding-block: clamp(48px, 7vw, 88px); }
.pro-panel { border-radius: calc(var(--r) + 6px); padding: clamp(22px, 4vw, 48px); border: 1px solid var(--line); }
.plans { display: grid; gap: 18px; }
.plan { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 26px; display: grid; gap: 14px; align-content: start; box-shadow: var(--shadow); }
.plan.feat { border-color: var(--turq); box-shadow: 0 0 0 3px rgba(20,184,166,.12), var(--shadow); }
.plan .price { font: 600 40px/1 var(--f-display); letter-spacing: -.005em; }
.plan .price small { font: 400 14px var(--f-body); color: var(--muted); margin-inline-start: 6px; letter-spacing: 0; }
.plan ul { margin: 0; padding-inline-start: 18px; display: grid; gap: 6px; font-size: 15px; }
.plan .fine { font-size: 12.5px; color: var(--muted); }
@media (min-width: 860px) { .plans { grid-template-columns: 1fr 1fr; } }

/* report previews */
.previews { display: grid; gap: 28px; }
.shelf { display: flex; gap: 14px; align-items: flex-end; overflow-x: auto; padding: 6px 4px 14px; scroll-snap-type: x mandatory; }
.shelf figure { margin: 0; flex: 0 0 auto; scroll-snap-align: start; display: grid; gap: 8px; }
.shelf img { display: block; width: 210px; height: auto; border-radius: 8px; border: 1px solid var(--line); box-shadow: 0 2px 4px rgba(11,15,14,.05), 0 14px 34px rgba(14,122,106,.12); background: #fff; }
.shelf figcaption { font-size: 12.5px; color: var(--muted); }
@media (min-width: 860px) { .shelf img { width: 214px; } }

/* cards grid */
.cards { display: grid; gap: 14px; grid-template-columns: repeat(auto-fill, minmax(210px, 1fr)); }
.card { display: grid; gap: 6px; align-content: start; background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 20px; text-decoration: none; color: var(--ink); transition: border-color .15s, box-shadow .15s; }
.card:hover { border-color: var(--turq); color: var(--ink); box-shadow: var(--shadow); }
.card h3 { font-size: 19px; }
.card p { color: var(--muted); font-size: 14.5px; }
.card .go { font: 500 13px var(--f-num); color: var(--teal-ink); }

/* prose pages */
.prose { max-width: 720px; display: grid; gap: 16px; padding-block-end: 64px; }
.prose h2 { font-size: 26px; margin-block-start: 22px; }
.prose h3 { font-size: 19px; margin-block-start: 8px; }
.prose ul, .prose ol { margin: 0; padding-inline-start: 22px; display: grid; gap: 6px; }
.prose p, .prose li { color: #26302D; }
.callout { background: #fff; border: 1px solid var(--line); border-inline-start: 3px solid var(--turq); border-radius: var(--r); padding: 18px; }
.answer { background: #fff; border: 1px solid var(--line); border-inline-start: 3px solid var(--turq); border-radius: var(--r); padding: 18px; font-size: 17px; }
.faq { display: grid; gap: 10px; }
.faq details { background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 14px 18px; }
.faq summary { cursor: pointer; font-weight: 600; }
.faq p { margin-block-start: 8px; color: var(--muted); }
.kv { display: grid; grid-template-columns: max-content 1fr; gap: 8px 20px; margin: 0; background: #fff; border: 1px solid var(--line); border-radius: var(--r); padding: 18px; }
.kv dt { font: 500 12px var(--f-num); color: var(--muted); text-transform: uppercase; letter-spacing: .06em; padding-block-start: 3px; }
.kv dd { margin: 0; }
.pc .px { font-size: 28px; }

/* footer (light) */
.site-foot { background: linear-gradient(180deg, #F1F8F7, #E9F5F3); color: var(--muted); padding-block: 56px 32px; border-block-start: 1px solid var(--line); }
.site-foot a { color: var(--ink); text-decoration: none; }
.site-foot a:hover { text-decoration: underline; color: var(--teal-ink); }
.f-top { display: grid; gap: 28px; grid-template-columns: repeat(2, 1fr); }
.f-brand { grid-column: 1 / -1; display: grid; gap: 12px; max-width: 360px; }
.f-brand p { font-size: 14px; }
.f-h { font: 500 12px var(--f-num); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); margin-block-end: 10px; }
.site-foot ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; font-size: 14.5px; }
.f-legal { border-block-start: 1px solid var(--line); margin-block-start: 36px; padding-block-start: 20px; font-size: 12.5px; line-height: 1.6; color: var(--muted); }
@media (min-width: 900px) { .f-top { grid-template-columns: 2fr 1fr 1fr 1fr 1fr; } .f-brand { grid-column: auto; } }

@media (prefers-reduced-motion: no-preference) {
  .fade { animation: up .6s ease-out both; }
  @keyframes up { from { transform: translateY(10px); } to { transform: none; } }
}
@media print { .site-head, .site-foot, .hero-ctas, .controls, .membranes { display: none; } }
.site-foot .logo { color: var(--teal); }
.pc .mb { margin-block-start: 12px; max-width: 360px; }

/* v3.2 test-first home */
.btn-lg { padding: 15px 30px; font-size: 17px; }
.hero-card { text-decoration: none; color: var(--ink); max-width: 440px; justify-self: center; width: 100%; transition: transform .2s, box-shadow .2s; }
.hero-card:hover { color: var(--ink); transform: translateY(-2px); box-shadow: 0 2px 4px rgba(11,15,14,.05), 0 18px 40px rgba(14,122,106,.16); }
.prof-mini { display: grid; gap: 2px; background: rgba(255,255,255,.7); border-radius: 10px; padding: 12px 14px; }
.prof-mini small { font: 500 11px var(--f-num); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.prof-mini b { font: 600 22px var(--f-display); letter-spacing: 0; }
.prof-mini span { font-size: 13.5px; color: var(--muted); }
.lev-mini { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.lev-mini li { display: flex; justify-content: space-between; font-size: 14px; border-block-end: 1px dashed var(--line); padding-block-end: 6px; }
.lev-mini b { font: 600 14px var(--f-num); color: var(--teal); }
.steps { background: #fff; border-block: 1px solid var(--line-soft); }
.steps-row { display: grid; gap: 14px; padding-block: 18px; }
.steps-row div { display: flex; gap: 12px; align-items: center; font-size: 15px; }
.steps-row b { flex: none; display: grid; place-items: center; width: 30px; height: 30px; border-radius: 50%; background: var(--teal-soft); color: var(--teal-ink); font: 600 14px var(--f-num); }
@media (min-width: 860px) { .steps-row { grid-template-columns: repeat(3, 1fr); } }
.ix-top { display: grid; gap: 16px; margin-block-end: 24px; }
.ix-top .stats { border: 1px solid var(--line-soft); border-radius: var(--r); overflow: hidden; }
.ix-top .stat { padding: 18px; }
@media (min-width: 980px) { .ix-top { grid-template-columns: 3fr 2fr; align-items: stretch; } .ix-top .stats { grid-template-columns: 1fr 1fr; } }

.bh-alt { margin: 6px 0 0; font-size: 13px; color: var(--muted); }
.bh-alt a { color: var(--teal-ink); }

/* newsletter v2 */
.news-l { display: grid; gap: 12px; align-content: start; }
.news ul.news-pts { list-style: none; padding: 0; gap: 10px; }
.news-pts li { padding-inline-start: 18px; position: relative; }
.news-pts li::before { content: ""; position: absolute; inset-inline-start: 0; top: .55em; width: 8px; height: 8px; border-radius: 50%; background: var(--turq); }
.news-pts b { display: block; color: var(--ink); font-weight: 600; }
.news-r { display: grid; gap: 18px; align-content: start; }
.news-latest { border-top: 1px solid var(--line); padding-top: 16px; display: grid; gap: 8px; }
.news-latest h3 { font-size: 15px; }
.news-latest ul { list-style: none; padding: 0; margin: 0; gap: 6px; }
.news-latest a { color: var(--teal-ink); }
.news .go, .card .go { font-weight: 600; color: var(--teal); text-decoration: none; }
@media (min-width: 900px) { .news { align-items: start; } }

/* blog */
.post-cards { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); margin-bottom: 8px; }
.post-meta { font: 500 12px/1.4 var(--f-mono, "IBM Plex Mono", monospace); color: var(--teal-ink); text-transform: uppercase; letter-spacing: .04em; }
.post { max-width: 760px; display: grid; gap: 28px; padding-bottom: 24px; }
.keybox { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin: 0; }
.keybox div { background: var(--teal-soft); border-radius: var(--r); padding: 14px 16px; }
.keybox dt { font: 700 22px/1.15 "Inter Tight", sans-serif; color: var(--teal-ink); }
.keybox dd { margin: 4px 0 0; font-size: 13px; color: var(--muted); }
.prose { font-size: 17px; line-height: 1.7; }
.prose h2 { font-size: 24px; margin: 32px 0 10px; }
.prose p, .prose ul { margin: 0 0 14px; }
.prose ul { padding-inline-start: 20px; display: grid; gap: 8px; }
.prose a { color: var(--teal-ink); }
.tbl-wrap { overflow-x: auto; margin: 8px 0 18px; }
.mini-tbl { width: 100%; border-collapse: collapse; font-size: 15px; background: #fff; border: 1px solid var(--line); border-radius: var(--r); }
.mini-tbl th, .mini-tbl td { text-align: start; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: top; }
.mini-tbl thead th { font-size: 13px; color: var(--muted); font-weight: 600; }
.mini-tbl tbody th { font-weight: 600; white-space: nowrap; }
.post-cta { display: flex; flex-wrap: wrap; gap: 16px; align-items: center; justify-content: space-between; background: linear-gradient(135deg, var(--teal-soft), #fff); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; }
.post-cta h2 { font-size: 20px; } .post-cta p { margin: 4px 0 0; color: var(--muted); }
.post-src h2, .post-more h2 { font-size: 18px; margin-bottom: 8px; }
.post-src ol, .post-more ul { padding-inline-start: 20px; display: grid; gap: 6px; margin: 0 0 10px; color: var(--muted); }
.post-src a, .post-more a { color: var(--teal-ink); word-break: break-word; }

.quiz, .result { padding-block: 40px 64px; }
.hero-s { padding-block: clamp(40px, 6vw, 72px) 40px; display: grid; gap: 16px; max-width: 760px; }
.hero-s + .quiz { padding-block-start: 8px; }
.hero-s { padding-block-end: 16px; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.privacy { font: 12.5px var(--f-num); color: var(--muted); }
.signup { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 22px; display: grid; gap: 10px; }
.signup p { color: var(--muted); }
.bh-form { min-height: 230px; }
.bh-form iframe { display: block; width: 100%; height: 230px !important; border: 0; }