/* PARALLAX — two views, one true measurement.
   Hand-written, no build step, no external requests. */

:root {
  --bg:        #0a0c10;
  --bg-raised: #11151c;
  --bg-sunken: #070910;
  --bg-hover:  #161b24;
  --rule:      #1e2530;
  --rule-soft: #161c25;
  --ink:       #e7ecf3;
  --ink-dim:   #9aa6b6;
  --ink-faint: #66717f;
  --ink-strong:#ffffff;
  /* the two views */
  --view-a:    #6fb0ff;
  --view-b:    #ffb267;
  --view-a-soft: rgba(111,176,255,0.12);
  --view-b-soft: rgba(255,178,103,0.12);
  --good:      #5fd39a;
  --good-soft: rgba(95,211,154,0.12);
  --warn:      #ff8a8a;
  --warn-soft: rgba(255,138,138,0.10);
  --measure:   66ch;
  --radius:    10px;
  --radius-sm: 6px;
  --shadow:    0 1px 0 rgba(255,255,255,0.03) inset, 0 12px 40px rgba(0,0,0,0.28);
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg:        #f6f7f9;
    --bg-raised: #ffffff;
    --bg-sunken: #eef1f5;
    --bg-hover:  #f0f3f7;
    --rule:      #d5dbe3;
    --rule-soft: #e4e8ee;
    --ink:       #1a2330;
    --ink-dim:   #4a5568;
    --ink-faint: #6b7788;
    --ink-strong:#0b1220;
    --view-a:    #2f7fe0;
    --view-b:    #d4842a;
    --view-a-soft: rgba(47,127,224,0.10);
    --view-b-soft: rgba(212,132,42,0.10);
    --good:      #1f9a64;
    --good-soft: rgba(31,154,100,0.10);
    --warn:      #c94444;
    --warn-soft: rgba(201,68,68,0.08);
    --shadow:    0 1px 0 rgba(255,255,255,0.8) inset, 0 10px 28px rgba(20,30,50,0.06);
    color-scheme: light;
  }
  a:hover { color: #1a5fb8; }
  .wordmark:hover { color: var(--ink-strong); }
  strong { color: var(--ink-strong); }
  .btn { color: #fff; }
  .btn:hover { background: #1a6fd0; }
  .btn.alt:hover { background: #b86e18; }
  .btn.ghost { color: var(--ink); }
  .btn.ghost:hover { color: var(--ink-strong); background: var(--bg-sunken); }
  nav.site a:hover, nav.site a[aria-current="page"] {
    color: var(--ink-strong);
  }
  code {
    color: #1e3a5f;
    background: var(--bg-sunken);
    border-color: var(--rule);
  }
  pre {
    color: #243247;
    background: #e8ecf2;
    border-color: var(--rule);
  }
  thead th { background: var(--bg-sunken); }
  .chart-block {
    background:
      radial-gradient(90% 120% at 0% 0%, var(--view-a-soft), transparent 50%),
      var(--bg-raised);
  }
  .hero h1 { color: var(--ink-strong); }
  .figure-hero .n { color: var(--ink-strong); }
  .stat .v { color: var(--ink-strong); }
  td.hi { color: var(--view-a); font-weight: 600; }
  tbody tr:hover td { background: var(--view-a-soft); }
  header.site {
    background: linear-gradient(180deg, rgba(255,255,255,0.92), rgba(246,247,249,0.88));
  }
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: clamp(16px, 0.5vw + 14.8px, 17.5px);
  line-height: 1.7;
  overflow-x: hidden;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.005em;
  text-rendering: optimizeLegibility;
}

/* ---------- layout ---------- */

.wrap { width: min(100% - 2.5rem, 74rem); margin-inline: auto; }
.prose { max-width: var(--measure); }

main { padding-block: clamp(1.75rem, 4.5vw, 3.5rem) 5rem; }

section + section { margin-top: clamp(2.75rem, 6.5vw, 5rem); }

/* breathing room inside long prose */
.prose p { margin: 0 0 1.1em; }
.prose p:last-child { margin-bottom: 0; }
.prose ul, .prose ol {
  margin: 0.4em 0 1.2em;
  padding-left: 1.25em;
}
.prose li { margin: 0.4em 0; padding-left: 0.15em; }
.prose li::marker { color: var(--ink-faint); }

/* ---------- masthead ---------- */

header.site {
  border-bottom: 1px solid var(--rule);
  background: linear-gradient(180deg, var(--bg-sunken), rgba(10,12,16,0.92));
  position: sticky; top: 0; z-index: 10;
  backdrop-filter: blur(10px) saturate(1.2);
  -webkit-backdrop-filter: blur(10px) saturate(1.2);
}

.masthead {
  display: flex; align-items: center; gap: 1.25rem;
  padding-block: 0.85rem;
  flex-wrap: wrap;
}

.wordmark {
  display: inline-flex; align-items: center; gap: 0.65rem;
  color: var(--ink); text-decoration: none;
  font-weight: 650; letter-spacing: 0.2em; font-size: 0.92rem;
  text-transform: uppercase;
}
.wordmark:hover { color: var(--ink-strong); }
.wordmark svg { display: block; overflow: visible; flex-shrink: 0; }
.wordmark .wm-path { stroke: var(--rule); }
.wordmark .wm-apex { fill: var(--ink); }

nav.site { margin-left: auto; display: flex; gap: 0.2rem 1.35rem; flex-wrap: wrap; }
nav.site a {
  color: var(--ink-dim); text-decoration: none;
  font-size: 0.84rem; letter-spacing: 0.05em;
  padding-block: 0.25rem;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
nav.site a:hover, nav.site a[aria-current="page"] {
  color: var(--ink); border-bottom-color: var(--view-a);
}

/* ---------- hero ---------- */

.hero { padding-block: clamp(2.2rem, 7vw, 4.5rem) 0; }

.hero h1 {
  font-size: clamp(2.35rem, 6.5vw, 4.2rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 0 0 0.75rem;
  font-weight: 650;
  color: var(--ink-strong);
  max-width: 18ch;
}

.hero h1 .line { display: block; }
@media (max-width: 32rem) {
  .hero h1 .line { display: inline; }
  .hero h1 { max-width: none; }
}

.tagline {
  font-family: var(--mono);
  font-size: clamp(0.88rem, 2vw, 1.02rem);
  color: var(--ink-dim);
  letter-spacing: 0.015em;
  margin: 0 0 1.85rem;
  line-height: 1.55;
  max-width: 48ch;
}
.tagline .a { color: var(--view-a); }
.tagline .b { color: var(--view-b); }

.lede {
  font-size: clamp(1.04rem, 2.1vw, 1.18rem);
  color: var(--ink);
  line-height: 1.72;
}
.lede p:first-child { margin-top: 0; }

/* ---------- type ---------- */

h2 {
  font-size: clamp(1.45rem, 3.2vw, 1.95rem);
  letter-spacing: -0.022em;
  font-weight: 650;
  margin: 0 0 1.05rem;
  padding-top: 0.15rem;
  color: var(--ink-strong);
  line-height: 1.2;
  max-width: 28ch;
}

h3 {
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.01em;
  margin: 2.1rem 0 0.55rem;
  color: var(--ink-strong);
  line-height: 1.3;
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 0.65rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.eyebrow::before {
  content: "";
  width: 1.1rem;
  height: 2px;
  background: linear-gradient(90deg, var(--view-a), var(--view-b));
  border-radius: 1px;
  flex-shrink: 0;
}

a {
  color: var(--view-a);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
  transition: color 0.12s ease;
}
a:hover { color: #a8d0ff; }
strong { color: var(--ink-strong); font-weight: 650; }

.muted { color: var(--ink-dim); }

code {
  font-family: var(--mono); font-size: 0.87em;
  background: var(--bg-raised); border: 1px solid var(--rule-soft);
  padding: 0.12em 0.38em; border-radius: 4px; color: #cfe0f5;
  overflow-wrap: anywhere;
}
pre {
  font-family: var(--mono); font-size: 0.82rem; line-height: 1.65;
  background: var(--bg-sunken); border: 1px solid var(--rule);
  border-left: 3px solid var(--view-a);
  padding: 1.05rem 1.15rem; border-radius: var(--radius-sm);
  overflow-x: auto; margin: 1.25rem 0;
  color: #c8d6e8;
  max-width: 100%;
}
pre code { background: none; border: 0; padding: 0; font-size: inherit; color: inherit; }

/* ---------- the two-view rule ---------- */

.rule-two {
  height: 2px; border: 0; margin: clamp(2.6rem, 6vw, 3.6rem) 0;
  background: linear-gradient(90deg, var(--view-a) 0 16%, var(--rule) 16% 84%, var(--view-b) 84% 100%);
  opacity: 0.55;
}

/* ---------- number display ---------- */

.figure-hero {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 140% at 0% 0%, var(--view-a-soft), transparent 55%),
    radial-gradient(120% 140% at 100% 100%, var(--view-b-soft), transparent 55%),
    var(--bg-raised);
  padding: clamp(1.5rem, 4vw, 2.35rem);
  margin: 2rem 0;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
.figure-hero::before {
  content: "";
  position: absolute; inset: 0 auto 0 0; width: 3px;
  background: linear-gradient(180deg, var(--view-a), var(--view-b));
}
.figure-hero .n {
  font-family: var(--mono);
  font-size: clamp(1.85rem, 5.8vw, 3.15rem);
  line-height: 1.08; letter-spacing: -0.025em;
  color: var(--ink-strong); display: block; word-break: break-word;
  font-weight: 500;
}
.figure-hero .n .unit {
  color: var(--view-b); font-size: 0.4em; letter-spacing: 0.06em;
  margin-left: 0.45rem; font-weight: 500;
}
.figure-hero .cap {
  color: var(--ink-dim); margin: 0.85rem 0 0;
  font-size: 0.98rem; line-height: 1.55; max-width: 52ch;
}

.stat-row {
  display: grid; gap: 1px;
  grid-template-columns: repeat(auto-fit, minmax(10.5rem, 1fr));
  background: var(--rule); border: 1px solid var(--rule);
  border-radius: var(--radius); overflow: hidden; margin: 1.9rem 0;
  box-shadow: var(--shadow);
}
.stat {
  background: var(--bg-raised);
  padding: 1.05rem 1.15rem 1.15rem;
  position: relative;
  min-width: 0;
}
.stat::after {
  content: "";
  position: absolute; left: 0; right: 0; top: 0; height: 2px;
  background: linear-gradient(90deg, var(--view-a), transparent 70%);
  opacity: 0.55;
}
.stat:nth-child(even)::after {
  background: linear-gradient(90deg, var(--view-b), transparent 70%);
}
.stat .k {
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-faint); margin: 0 0 0.45rem;
}
.stat .v {
  font-family: var(--mono); font-size: clamp(1.05rem, 2.4vw, 1.28rem);
  color: var(--ink-strong); margin: 0; line-height: 1.25;
  word-break: break-word;
}
.stat .v.sm { font-size: 0.96rem; }

/* ---------- tables ---------- */

.table-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin: 1.7rem 0;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--bg-raised);
  box-shadow: var(--shadow);
  max-width: 100%;
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.86rem;
  min-width: 28rem;
}
caption {
  text-align: left; color: var(--ink-faint); font-size: 0.8rem;
  padding: 0.85rem 1.05rem; border-bottom: 1px solid var(--rule-soft);
  line-height: 1.45; caption-side: top;
}
th, td {
  padding: 0.6rem 1rem;
  text-align: right;
  white-space: nowrap;
}
th:first-child, td:first-child { text-align: left; }
thead th {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-faint);
  border-bottom: 1px solid var(--rule); font-weight: 500;
  background: var(--bg-sunken);
  position: sticky; top: 0;
}
tbody td {
  font-family: var(--mono); color: var(--ink);
  border-bottom: 1px solid var(--rule-soft);
}
tbody tr:last-child td { border-bottom: 0; }
tbody tr:hover td { background: var(--view-a-soft); }
td.hi { color: var(--view-a); font-weight: 600; }

/* ---------- cards ---------- */

.cards {
  display: grid;
  gap: 1.15rem;
  grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
  margin-top: 1.7rem;
}

.card {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--bg-raised);
  padding: 1.35rem 1.4rem 1.25rem;
  display: flex; flex-direction: column;
  box-shadow: var(--shadow);
  transition: border-color 0.15s ease, transform 0.15s ease;
  position: relative;
  overflow: hidden;
}
.card::before {
  content: "";
  position: absolute; left: 0; right: 0; top: 0; height: 2px;
  background: linear-gradient(90deg, var(--view-a), var(--view-b));
  opacity: 0.7;
}
.card:hover { border-color: color-mix(in srgb, var(--view-a) 35%, var(--rule)); }
.card h3 { margin-top: 0.55rem; margin-bottom: 0.5rem; max-width: none; }
.card p {
  color: var(--ink-dim); font-size: 0.93rem; line-height: 1.6;
  margin: 0 0 0.75rem;
}
.card p:last-of-type { margin-bottom: 0; }
.card .foot {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--rule-soft);
  font-size: 0.9rem;
}
.card .foot a { font-weight: 550; text-decoration: none; }
.card .foot a:hover { text-decoration: underline; }
.card .foot .pill { margin-bottom: 0.45rem; }

/* product cards: price + meta strip */
.card.product {
  padding-bottom: 1.15rem;
}
.card.product .price-row {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: 0.75rem; margin: 0.15rem 0 0.85rem; flex-wrap: wrap;
}
.card.product .price {
  font-family: var(--mono);
  font-size: 1.55rem;
  color: var(--ink-strong);
  letter-spacing: -0.02em;
  font-weight: 600;
}
.card.product .price .cur {
  font-size: 0.72em;
  color: var(--view-b);
  margin-right: 0.12em;
}
.card.product .meta {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
}
.card.product .meta span + span::before {
  content: "·";
  margin: 0 0.4em;
  opacity: 0.6;
}

.pill {
  display: inline-block; font-family: var(--mono);
  font-size: 0.66rem; letter-spacing: 0.12em; text-transform: uppercase;
  padding: 0.22rem 0.6rem; border-radius: 100px;
  border: 1px solid var(--rule); color: var(--ink-faint);
  background: var(--bg-sunken);
}
.pill.free {
  color: var(--good);
  border-color: color-mix(in srgb, var(--good) 40%, var(--rule));
  background: var(--good-soft);
}
.pill.soon {
  color: var(--view-b);
  border-color: color-mix(in srgb, var(--view-b) 40%, var(--rule));
  background: var(--view-b-soft);
}
.pill.price {
  color: var(--view-a);
  border-color: color-mix(in srgb, var(--view-a) 40%, var(--rule));
  background: var(--view-a-soft);
}

/* ---------- charts ---------- */

.chart-block {
  margin: 1.8rem 0;
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background:
    radial-gradient(90% 120% at 0% 0%, var(--view-a-soft), transparent 50%),
    var(--bg-raised);
  padding: clamp(1rem, 2.5vw, 1.35rem) clamp(0.85rem, 2vw, 1.25rem) 1rem;
  box-shadow: var(--shadow);
  overflow: hidden;
  max-width: 100%;
}
.chart-block figcaption,
figcaption.chart-cap {
  font-size: 0.84rem;
  color: var(--ink-dim);
  margin: 0.65rem 0.15rem 0;
  line-height: 1.5;
  max-width: 60ch;
}
.chart-block svg {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
}
.chart-scroll {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
}
.chart-scroll svg { min-width: min(100%, 32rem); }

/* axis / series tokens used by inline SVG */
.chart-axis { stroke: var(--rule); fill: none; }
.chart-grid { stroke: var(--rule-soft); fill: none; }
.chart-label { fill: var(--ink-faint); font-family: var(--mono); }
.chart-title { fill: var(--ink-dim); font-family: var(--sans); }
.chart-a { stroke: var(--view-a); fill: var(--view-a); }
.chart-b { stroke: var(--view-b); fill: var(--view-b); }
.chart-good { stroke: var(--good); fill: var(--good); }
.chart-area-a { fill: var(--view-a); opacity: 0.14; }
.chart-area-b { fill: var(--view-b); opacity: 0.14; }
.chart-area-good { fill: var(--good); opacity: 0.12; }
.chart-threshold { stroke: var(--warn); stroke-dasharray: 4 4; opacity: 0.7; }

/* ---------- callouts ---------- */

.note {
  border: 1px solid var(--rule);
  border-left: 3px solid var(--view-b);
  background: var(--bg-raised);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.25rem;
  margin: 1.7rem 0;
  box-shadow: var(--shadow);
}
.note p:first-child { margin-top: 0; }
.note p:last-child { margin-bottom: 0; }
.note p { margin: 0.55rem 0; line-height: 1.6; color: var(--ink); }
.note .label {
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--view-b); display: block; margin-bottom: 0.5rem;
}
.note.trap {
  border-left-color: var(--warn);
  background:
    linear-gradient(90deg, var(--warn-soft), transparent 40%),
    var(--bg-raised);
}
.note.trap .label { color: var(--warn); }

/* ---------- steps (verify page) ---------- */

.steps {
  counter-reset: step;
  display: grid;
  gap: 1rem;
  margin: 1.5rem 0;
}
.step {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--bg-raised);
  padding: 1.15rem 1.25rem 1.15rem 1.35rem;
  position: relative;
  box-shadow: var(--shadow);
}
.step h3 {
  margin-top: 0;
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  counter-increment: step;
}
.step h3::before {
  content: counter(step, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--view-a);
  font-weight: 600;
}

/* ---------- footer ---------- */

footer.site {
  border-top: 1px solid var(--rule);
  color: var(--ink-faint); font-size: 0.83rem;
  padding-block: 2.3rem 3.2rem; margin-top: 4.5rem;
  background: var(--bg-sunken);
}
footer.site p { margin: 0.45rem 0; max-width: var(--measure); line-height: 1.55; }
footer.site a { color: var(--ink-dim); }
footer.site strong { color: var(--ink); }

/* ---------- motion ---------- */

@media (prefers-reduced-motion: no-preference) {
  .hero h1, .hero .tagline, .hero .lede { animation: rise 0.55s ease-out backwards; }
  .hero .tagline { animation-delay: 0.06s; }
  .hero .lede { animation-delay: 0.12s; }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(0.55rem); }
  to { opacity: 1; transform: none; }
}

/* ---------- buttons / CTA ---------- */

.btn {
  display: inline-block;
  background: var(--view-a);
  color: #06121f;
  font-weight: 600;
  text-decoration: none;
  padding: 0.62rem 1.15rem;
  border: 0;
  border-radius: 8px;
  cursor: pointer;
  font-family: var(--sans);
  font-size: 0.94rem;
  letter-spacing: 0.01em;
  transition: background 0.12s ease, transform 0.12s ease;
  line-height: 1.3;
}
.btn:hover { background: #8dc3ff; }
.btn[disabled] { opacity: 0.55; cursor: default; }
.btn.alt { background: var(--view-b); color: #1a1006; }
.btn.alt:hover { background: #ffc891; }
.btn.small { padding: 0.28rem 0.65rem; font-size: 0.78rem; margin-left: 0.4rem; }
#btcbox code { word-break: break-all; }
.cta-row {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin: 1.7rem 0 0.4rem;
}
.btn.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule);
}
.btn.ghost:hover {
  background: var(--bg-raised);
  color: var(--ink-strong);
  border-color: color-mix(in srgb, var(--view-a) 40%, var(--rule));
}

/* ---------- focus / a11y ---------- */

:focus-visible {
  outline: 2px solid var(--view-a);
  outline-offset: 3px;
}
.btn:focus-visible { outline-offset: 3px; }

/* ---------- mobile guardrails ---------- */

@media (max-width: 24rem) {
  .wrap { width: min(100% - 1.5rem, 74rem); }
  .stat-row { grid-template-columns: 1fr 1fr; }
  .hero h1 { font-size: clamp(2rem, 11vw, 2.5rem); }
  th, td { padding: 0.5rem 0.7rem; }
  .cta-row .btn { width: 100%; text-align: center; }
}

@media (max-width: 22rem) {
  .stat-row { grid-template-columns: 1fr; }
}

/* ============================================================
   S-tier layer — brand atmosphere, conversion chrome, GEO blocks
   ============================================================ */

body {
  background-image:
    radial-gradient(900px 520px at 8% -10%, rgba(111,176,255,0.09), transparent 55%),
    radial-gradient(800px 480px at 92% 8%, rgba(255,178,103,0.07), transparent 50%);
  background-attachment: fixed;
}

@media (prefers-color-scheme: light) {
  body {
    background-image:
      radial-gradient(900px 520px at 8% -10%, rgba(47,127,224,0.07), transparent 55%),
      radial-gradient(800px 480px at 92% 8%, rgba(212,132,42,0.06), transparent 50%);
  }
}

/* skip link */
.skip {
  position: absolute; left: -9999px; top: 0;
  background: var(--view-a); color: #06121f;
  padding: 0.5rem 0.9rem; z-index: 100; font-weight: 600;
  border-radius: 0 0 8px 0;
}
.skip:focus { left: 0; }

/* atmospheric hero */
.hero.hero-s {
  position: relative;
  padding-block: clamp(2.8rem, 9vw, 5.5rem) clamp(1.5rem, 4vw, 2.5rem);
}
.hero.hero-s::before {
  content: "";
  position: absolute;
  inset: -10% -5% auto -5%;
  height: 120%;
  background:
    radial-gradient(50% 60% at 18% 40%, rgba(111,176,255,0.14), transparent 70%),
    radial-gradient(45% 55% at 82% 45%, rgba(255,178,103,0.12), transparent 70%);
  pointer-events: none; z-index: 0;
}
.hero.hero-s > * { position: relative; z-index: 1; }
.hero.hero-s h1 { max-width: 16ch; }

.brand-mark {
  display: flex; align-items: center; gap: 1rem;
  margin: 0 0 1.4rem;
}
.brand-mark svg { width: 56px; height: 34px; overflow: visible; }
.brand-mark .brand-name {
  font-weight: 700; letter-spacing: 0.28em; font-size: 0.82rem;
  text-transform: uppercase; color: var(--ink-dim);
}

/* proof / trust strip */
.proof-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11.5rem, 1fr));
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 2rem 0 0;
  box-shadow: var(--shadow);
}
.proof {
  background: var(--bg-raised);
  padding: 1.05rem 1.1rem 1.15rem;
  min-width: 0;
}
.proof .t {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--view-a);
  margin: 0 0 0.4rem;
  font-weight: 600;
}
.proof:nth-child(even) .t { color: var(--view-b); }
.proof .d {
  margin: 0;
  font-size: 0.88rem;
  color: var(--ink-dim);
  line-height: 1.45;
}

/* finding spotlight cards */
.cards.findings-grid {
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
}
.card.finding {
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
a.card.finding:hover {
  border-color: color-mix(in srgb, var(--view-a) 45%, var(--rule));
  transform: translateY(-2px);
  box-shadow: 0 16px 40px rgba(0,0,0,0.22);
  color: inherit;
}
@media (prefers-color-scheme: light) {
  a.card.finding:hover { box-shadow: 0 14px 32px rgba(20,30,50,0.1); }
}
.card.finding .num {
  font-family: var(--mono);
  font-size: clamp(1.35rem, 3vw, 1.7rem);
  color: var(--ink-strong);
  letter-spacing: -0.02em;
  margin: 0.35rem 0 0.55rem;
  line-height: 1.15;
  font-weight: 550;
}
.card.finding .num .unit {
  font-size: 0.55em;
  color: var(--view-b);
  margin-left: 0.35rem;
  letter-spacing: 0.04em;
}
.card.finding h3 { margin-top: 0.2rem; }
.card.finding .foot {
  color: var(--view-a);
  font-weight: 550;
}

/* section lead spacing */
.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
  margin-bottom: 0.35rem;
}
.section-head h2 { margin-bottom: 0; }
.section-head .more {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  text-decoration: none;
  white-space: nowrap;
}
.section-head .more:hover { text-decoration: underline; }

/* dual-view split callout */
.split-views {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  overflow: hidden;
  margin: 1.8rem 0;
  box-shadow: var(--shadow);
}
.split-views .pane {
  background: var(--bg-raised);
  padding: 1.25rem 1.3rem;
}
.split-views .pane.a { border-top: 2px solid var(--view-a); }
.split-views .pane.b { border-top: 2px solid var(--view-b); }
.split-views .pane h3 {
  margin: 0 0 0.45rem;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--view-a);
}
.split-views .pane.b h3 { color: var(--view-b); }
.split-views .pane p {
  margin: 0;
  color: var(--ink-dim);
  font-size: 0.94rem;
  line-height: 1.55;
}
@media (max-width: 36rem) {
  .split-views { grid-template-columns: 1fr; }
}

/* FAQ for GEO / SEO */
.faq {
  display: grid;
  gap: 0.75rem;
  margin: 1.4rem 0 0;
  max-width: 52rem;
}
.faq details {
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  background: var(--bg-raised);
  padding: 0.85rem 1.1rem;
}
.faq summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--ink-strong);
  list-style: none;
  font-size: 0.98rem;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "+";
  font-family: var(--mono);
  color: var(--view-a);
  margin-right: 0.55rem;
}
.faq details[open] summary::before { content: "–"; }
.faq details p {
  margin: 0.7rem 0 0.15rem;
  color: var(--ink-dim);
  font-size: 0.94rem;
  line-height: 1.6;
}

/* breadcrumb */
.crumbs {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--ink-faint);
  margin: 0 0 1rem;
}
.crumbs a { color: var(--ink-dim); text-decoration: none; }
.crumbs a:hover { color: var(--view-a); text-decoration: underline; }
.crumbs span { margin: 0 0.4em; opacity: 0.5; }

/* footer grid */
footer.site .foot-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  gap: 1.75rem 1.5rem;
  max-width: none;
  margin-bottom: 1.75rem;
}
footer.site .foot-col h4 {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 0.7rem;
  font-weight: 500;
}
footer.site .foot-col ul {
  list-style: none;
  margin: 0;
  padding: 0;
}
footer.site .foot-col li { margin: 0.35rem 0; }
footer.site .foot-col a {
  color: var(--ink-dim);
  text-decoration: none;
  font-size: 0.88rem;
}
footer.site .foot-col a:hover { color: var(--view-a); }
footer.site .foot-brand p { max-width: 36ch; }
footer.site .foot-bottom {
  border-top: 1px solid var(--rule);
  padding-top: 1.1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  justify-content: space-between;
  align-items: baseline;
}
footer.site .foot-bottom p { margin: 0; max-width: none; }
@media (max-width: 48rem) {
  footer.site .foot-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 28rem) {
  footer.site .foot-grid { grid-template-columns: 1fr; }
}

/* sticky mobile CTA bar (home only) */
.mobile-cta {
  display: none;
}
@media (max-width: 32rem) {
  .mobile-cta {
    display: flex;
    gap: 0.5rem;
    position: fixed;
    left: 0; right: 0; bottom: 0;
    z-index: 20;
    padding: 0.65rem 0.85rem calc(0.65rem + env(safe-area-inset-bottom));
    background: color-mix(in srgb, var(--bg-sunken) 92%, transparent);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--rule);
  }
  .mobile-cta .btn { flex: 1; text-align: center; font-size: 0.88rem; padding: 0.7rem 0.5rem; }
  body.has-mobile-cta { padding-bottom: 4.5rem; }
}

/* article reading polish */
.article-meta {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--ink-faint);
  margin: -0.4rem 0 1.4rem;
}
.toc {
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  background: var(--bg-raised);
  padding: 1rem 1.15rem;
  margin: 1.4rem 0 2rem;
  max-width: 36rem;
}
.toc .label {
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-faint);
  display: block;
  margin-bottom: 0.55rem;
}
.toc ol {
  margin: 0;
  padding-left: 1.15rem;
}
.toc li { margin: 0.3rem 0; font-size: 0.9rem; }
.toc a { text-decoration: none; }
.toc a:hover { text-decoration: underline; }

/* verify steps as numbered cards */
.steps-grid {
  display: grid;
  gap: 0.9rem;
  margin: 1.4rem 0;
}
.steps-grid .step p { margin: 0.45rem 0 0; color: var(--ink-dim); font-size: 0.94rem; }

/* selection */
::selection {
  background: color-mix(in srgb, var(--view-a) 35%, transparent);
  color: var(--ink-strong);
}