/* =====================================================================
   b4help.com - Fractional CTO landing page
   Hand-written CSS. No frameworks, no preprocessor, no CDN.
   Design reference: refero:blueprint-console (Dovetail) - dark, gridded,
   Inter + JetBrains Mono, luminance-stepped surfaces, no shadows.
   ===================================================================== */

/* ---------------------------------------------------------------- fonts */
/* Self-hosted latin variable subsets. No third-party requests. */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('../fonts/inter-latin-var.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 100 800;
  font-display: swap;
  src: url('../fonts/jetbrains-mono-latin-var.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA,
    U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193,
    U+2212, U+2215, U+FEFF, U+FFFD;
}

/* --------------------------------------------------------------- tokens */
:root {
  /* Fonts */
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system, 'Segoe UI',
    Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas,
    'Liberation Mono', monospace;

  /* Type scale */
  --fs-caption: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-body: 1.0625rem;
  --fs-lead: clamp(1.0625rem, 1.5vw, 1.1875rem);
  --fs-h3: clamp(1.125rem, 1.5vw, 1.3125rem);
  --fs-h2: clamp(1.75rem, 3.2vw, 2.5rem);
  --fs-h1: clamp(2.5rem, 5vw, 4.5rem);

  /* Layout */
  --wrap: 1200px;
  --prose: 68ch;
  --gutter: 1rem;
  --header-h: 68px;
  --radius: 8px;
  --radius-sm: 4px;

  /* Dark theme (default) */
  --bg: #0B0F14;
  --bg-elevated: #131A22;
  --surface-3: #1A2430;
  --border: #1F2A35;
  --border-strong: #2C3A48;
  --text: #E6EDF3;
  --text-muted: #8B9AAB;

  --accent: #1878D8;
  --accent-hover: #3A92EE;
  --accent-muted: #0C4A8A;
  --accent-fill: #0E64BC;
  --accent-fill-hover: #0B5AAE;
  --accent-text: #3A92EE;
  --on-accent: #FFFFFF;
  --warn: #E5764B;

  --band-bg: #0C4A8A;
  --band-text: #E6EDF3;
  --band-muted: #BFDCF7;
  --band-cta-bg: #0B0F14;
  --band-cta-text: #E6EDF3;
  --band-cta-hover: #1A2430;

  --grid-minor: rgba(139, 154, 171, 0.055);
  --grid-major: rgba(139, 154, 171, 0.10);
  --header-soft: rgba(11, 15, 20, 0.55);
  --header-scrolled: rgba(11, 15, 20, 0.9);
  --selection-bg: #0C4A8A;
  --selection-text: #E6EDF3;

  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #FFFFFF;
    --bg-elevated: #F6F8FA;
    --surface-3: #EDF1F5;
    --border: #D7DEE5;
    --border-strong: #B9C4CE;
    --text: #0B0F14;
    --text-muted: #5A6B7B;

    --accent: #0C6CC0;
    --accent-hover: #1878D8;
    --accent-muted: #BFDCF7;
    --accent-fill: #0C6CC0;
    --accent-fill-hover: #0A5CA4;
    --accent-text: #0C6CC0;
    --on-accent: #FFFFFF;
    --warn: #C2552B;

    --band-bg: #BFDCF7;
    --band-text: #0B0F14;
    --band-muted: #204E7A;
    --band-cta-bg: #0B0F14;
    --band-cta-text: #F6F8FA;
    --band-cta-hover: #1A2430;

    --grid-minor: rgba(11, 15, 20, 0.045);
    --grid-major: rgba(11, 15, 20, 0.075);
    --header-soft: rgba(255, 255, 255, 0.6);
    --header-scrolled: rgba(255, 255, 255, 0.92);
    --selection-bg: #BFDCF7;
    --selection-text: #0B0F14;

    color-scheme: light;
  }
}

/* ------------------------------------------------------------ base ---- */
*, *::before, *::after { box-sizing: border-box; }

html {
  /* Blueprint grid: 48px minor cells, 144px major cells. */
  background-color: var(--bg);
  background-image:
    linear-gradient(to right, var(--grid-major) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-major) 1px, transparent 1px),
    linear-gradient(to right, var(--grid-minor) 1px, transparent 1px),
    linear-gradient(to bottom, var(--grid-minor) 1px, transparent 1px);
  background-size: 144px 144px, 144px 144px, 48px 48px, 48px 48px;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: transparent;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.65;
  font-weight: 400;
  letter-spacing: -0.005em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection { background: var(--selection-bg); color: var(--selection-text); }

img, svg { max-width: 100%; }
img { height: auto; }
picture { display: contents; }

h1, h2, h3, h4 {
  margin: 0 0 0.6em;
  font-weight: 500;
  line-height: 1.14;
  letter-spacing: -0.025em;
  text-wrap: balance;
}
h1 { font-size: var(--fs-h1); font-weight: 550; letter-spacing: -0.03em; line-height: 1.05; }
h2 { font-size: var(--fs-h2); }
h3 { font-size: var(--fs-h3); letter-spacing: -0.015em; line-height: 1.3; }

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--accent-text); text-decoration-thickness: 1px; text-underline-offset: 3px; }
a:hover { color: var(--accent-hover); }

ul, ol { margin: 0; padding: 0; list-style: none; }

strong { font-weight: 600; }

blockquote { margin: 0; }

:focus-visible {
  outline: 2px solid var(--accent-hover);
  outline-offset: 2px;
  border-radius: 2px;
}

section[id] { scroll-margin-top: calc(var(--header-h) + 16px); }

/* --------------------------------------------------------- utilities --- */
.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
@media (min-width: 640px) { .wrap { padding-inline: 1.5rem; } }

.prose { max-width: var(--prose); }
.prose p { color: var(--text-muted); }
.prose p strong { color: var(--text); }

.lede {
  font-size: var(--fs-lead);
  color: var(--text-muted);
  max-width: 60ch;
}

.mono {
  font-family: var(--font-mono);
  font-variant-ligatures: none;
}

.mono,
.chip,
.stamp,
.sec-label,
.sec-idx,
.group-label,
.price-terms,
.badge,
.plate-caption,
.footer-label,
.a2-label,
.a2-caption {
  font-weight: 400;
}

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: var(--gutter);
  top: -100px;
  z-index: 100;
  padding: 0.7rem 1rem;
  background: var(--accent-fill);
  color: var(--on-accent);
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: var(--fs-sm);
  transition: top 0.15s ease;
}
.skip-link:focus { top: 0.75rem; color: var(--on-accent); }

/* ----------------------------------------------------------- buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  line-height: 1.2;
  padding: 0.85rem 1.4rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  text-decoration: none;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease,
    color 0.15s ease;
}
.btn-cta {
  background: var(--accent-fill);
  border-color: var(--accent-fill);
  color: var(--on-accent);
}
.btn-cta:hover {
  background: var(--accent-fill-hover);
  border-color: var(--accent-fill-hover);
  color: var(--on-accent);
}
.btn-ghost {
  background: transparent;
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover {
  border-color: var(--accent);
  background: var(--surface-3);
  color: var(--text);
}
.btn-sm { padding: 0.6rem 1rem; font-size: var(--fs-sm); }
.btn-lg { padding: 1rem 1.7rem; font-size: 1.0625rem; }
.btn-block { width: 100%; }

/* comfortable touch targets on pointer-coarse widths */
@media (max-width: 899px) {
  .btn-sm, .nav-toggle { min-height: 44px; }
}
.btn { min-height: 44px; }

.btn-on-band {
  background: var(--band-cta-bg);
  border-color: var(--band-cta-bg);
  color: var(--band-cta-text);
}
.btn-on-band:hover {
  background: var(--band-cta-hover);
  border-color: var(--band-cta-hover);
  color: var(--band-cta-text);
}
.btn-on-band:focus-visible { outline-color: var(--band-text); }

/* ------------------------------------------------------------ header --- */
.sentinel-top { height: 1px; margin-bottom: -1px; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}
/* stage 1: frosted as soon as the page moves */
.site-header.is-scrolled {
  background: var(--header-soft);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
/* stage 2: past the hero, add the hairline */
.site-header.is-past-hero {
  background: var(--header-scrolled);
  border-bottom-color: var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: var(--header-h);
}

.brand { display: inline-flex; align-items: center; text-decoration: none; }
.brand-img { height: 26px; width: auto; display: block; }
.brand-img--foot { height: 24px; }

.nav-desktop { display: none; margin-inline: auto; gap: 1.75rem; }
.nav-desktop a {
  font-size: var(--fs-sm);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.35rem 0;
  border-bottom: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.nav-desktop a:hover { color: var(--text); border-bottom-color: var(--accent); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-left: auto;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: transparent;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.55rem 0.7rem;
  cursor: pointer;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.nav-toggle:hover { border-color: var(--accent); background: var(--surface-3); }
.nav-toggle-bars { display: grid; gap: 3px; }
.nav-toggle-bars span {
  display: block;
  width: 16px; height: 1.5px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) { transform: translateY(4.5px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars span:nth-child(3) { transform: translateY(-4.5px) rotate(-45deg); }

@media (min-width: 900px) {
  .nav-desktop { display: flex; }
  .nav-toggle { display: none; }
}

.mobile-menu {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  z-index: 45;
  background: var(--bg);
  padding: clamp(1.5rem, 5vw, 2.5rem) var(--gutter) 2rem;
  overflow-y: auto;
  border-top: 1px solid var(--border);
}
.mobile-menu[hidden] { display: none; }
.mobile-menu nav { display: grid; gap: 0; margin-bottom: 1.75rem; }
.mobile-menu nav a {
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--text);
  text-decoration: none;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--border);
}
.mobile-menu nav a:hover { color: var(--accent-text); }
.mobile-menu-foot {
  margin-top: 1.5rem;
  font-size: var(--fs-caption);
  letter-spacing: 0.06em;
  color: var(--text-muted);
}
.mobile-menu-foot a { color: var(--text-muted); }
body.no-scroll { overflow: hidden; }

/* -------------------------------------------------------------- hero --- */
.hero {
  position: relative;
  padding: clamp(2.5rem, 7vw, 5rem) 0 clamp(3rem, 7vw, 5rem);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.grid-backdrop {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--accent) 1px, transparent 1px),
    linear-gradient(to bottom, var(--accent) 1px, transparent 1px);
  background-size: 288px 288px;
  opacity: 0.055;
}
.hero-inner {
  position: relative;
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: center;
}
@media (min-width: 1000px) {
  .hero-inner { grid-template-columns: minmax(0, 6.2fr) minmax(0, 5fr); }
}

.stamp {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 1.25rem;
}
.hero h1 { margin-bottom: 1.1rem; max-width: 18ch; }
.accent-text { color: var(--accent); }
.hero-sub {
  font-size: var(--fs-lead);
  color: var(--text-muted);
  max-width: 52ch;
  margin-bottom: 1.75rem;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}
.hero-note {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin: 0;
}

/* plate: square-cornered ruled frame holding animation 1 */
.hero-figure { margin: 0; }
.plate {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  padding: clamp(0.75rem, 2vw, 1.25rem);
}
.plate-caption {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  justify-content: space-between;
  margin-top: 0.75rem;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  line-height: 1.5;
}
.plate-caption-meta { color: var(--text-muted); opacity: 0.75; }

/* ----------------------------------------------------------- sections --- */
.section {
  padding: clamp(3.5rem, 9vw, 7rem) 0;
  border-top: 1px solid var(--border);
  border-bottom: 0;
}
.hero + .section { border-top: 0; }

.sec-head {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  margin: 0 0 clamp(1.25rem, 3vw, 2rem);
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}
.sec-idx { color: var(--accent-text); }
.sec-head::after {
  content: "";
  flex: 1;
  height: 1px;
  background: var(--border);
  transform: translateY(-0.25em);
}

.section-intro { margin-bottom: clamp(1.75rem, 4vw, 2.75rem); }
.section-intro h2 { max-width: 24ch; }
.section-intro .prose { margin-top: 1.25rem; }

/* -------------------------------------------------------- pain / grid --- */
.pain-grid {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--border);
}
.pain-cell {
  padding: 1.6rem 0 1.75rem;
  border-bottom: 1px solid var(--border);
}
@media (min-width: 720px) {
  .pain-grid { grid-template-columns: 1fr 1fr; column-gap: 2.5rem; }
}
@media (min-width: 1080px) {
  .pain-grid { grid-template-columns: repeat(4, 1fr); column-gap: 2rem; }
}
.pain-cell h3 { font-size: 1.0625rem; margin: 0.9rem 0 0.5rem; letter-spacing: -0.012em; }
.pain-cell p { color: var(--text-muted); font-size: 0.9375rem; margin: 0; }

.icon {
  width: 26px; height: 26px;
  display: block;
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ----------------------------------------------------------- pillars --- */
.pillar-grid {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--border);
}
.pillar {
  padding: 1.75rem 0 2rem;
  border-bottom: 1px solid var(--border);
}
@media (min-width: 760px) {
  .pillar-grid { grid-template-columns: 1fr 1fr; column-gap: 3rem; }
}
.pillar-idx {
  font-size: var(--fs-caption);
  letter-spacing: 0.12em;
  color: var(--accent-text);
  margin: 0 0 0.75rem;
}
.pillar h3 { margin-bottom: 0.55rem; }
.pillar p { color: var(--text-muted); font-size: 0.9375rem; margin: 0; max-width: 46ch; }

/* --------------------------------------------------------- feature/AI --- */
.a2 {
  display: grid;
  gap: clamp(0.75rem, 2vw, 1.25rem);
  margin: clamp(1.5rem, 4vw, 2.5rem) 0 1rem;
}
@media (min-width: 760px) { .a2 { grid-template-columns: 1fr 1fr; } }

.a2-panel {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  padding: clamp(0.9rem, 2vw, 1.35rem);
}
.a2-panel--in { border-color: var(--accent-muted); }
.a2-label {
  font-size: var(--fs-caption);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 0.5rem;
}
.a2-note { font-size: 0.8125rem; color: var(--text-muted); margin: 0.5rem 0 0; }
.a2-panel--in .a2-note { color: var(--text); }

.anim-a2 { display: block; width: 100%; height: auto; }

.a2-boundary { fill: none; stroke: var(--border-strong); stroke-width: 1.25; }
.a2-cloud { fill: none; stroke: var(--text-muted); stroke-width: 1.4; opacity: 0.6; }

.a2-contain {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.25;
  opacity: 0.4;
  transform-box: fill-box;
  transform-origin: center;
  animation: a2-contain 3.4s ease-in-out infinite;
}
@keyframes a2-contain {
  0%, 100% { opacity: 0.24; transform: scale(1); }
  50%      { opacity: 0.9;  transform: scale(1.014); }
}

.a2-person, .a2-rack rect { fill: none; stroke: var(--text-muted); stroke-width: 1.4; }
.a2-rack rect { fill: var(--bg-elevated); }
.a2-slot { fill: var(--text-muted); opacity: 0.5; }
.a2-led { fill: var(--accent); }

.a2-doc { fill: none; stroke: var(--accent); stroke-width: 1.6; stroke-linejoin: round; stroke-linecap: round; }
/* the document body is opaque so overlapping shapes stay legible */
.a2-doc path:first-child { fill: var(--bg-elevated); }

.a2-travel { animation: a2-out 6s linear infinite; }
.a2-travel--in { animation-name: a2-in; }

@keyframes a2-out {
  0%   { transform: translate(0, 0);            opacity: 0; }
  8%   { opacity: 1; }
  25%  { transform: translate(0, -60px); }
  45%  { transform: translate(2px, -125px); }
  58%  { transform: translate(14px, -150px); }
  78%  { transform: translate(70px, -164px); }
  94%  { transform: translate(133px, -170px);  opacity: 1; }
  100% { transform: translate(141px, -170px);  opacity: 0; }
}
@keyframes a2-in {
  0%   { transform: translate(0, 0);            opacity: 0; }
  10%  { opacity: 1; }
  28%  { transform: translate(0, -55px); }
  45%  { transform: translate(0, -88px); }
  62%  { transform: translate(-16px, -72px); }
  80%  { transform: translate(-38px, -56px); }
  94%  { transform: translate(-50px, -46px);   opacity: 1; }
  100% { transform: translate(-51px, -45px);   opacity: 0; }
}
.a2-doc--out { animation: a2-warn 6s linear infinite; }
/* the flip is near-instant: interpolating blue into orange passes through mud */
@keyframes a2-warn {
  0%, 48%   { stroke: var(--accent); }
  52%, 100% { stroke: var(--warn); }
}

.a2-return {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.2;
  stroke-dasharray: 3 6;
  opacity: 0.5;
  animation: a2-flow 1.6s linear infinite;
}
@keyframes a2-flow { to { stroke-dashoffset: -9; } }
.a2-return-dot {
  fill: var(--accent);
  animation: a2-return 3.2s ease-in-out infinite;
}
@keyframes a2-return {
  0%   { transform: translate(0, 0);          opacity: 0; }
  20%  { opacity: 0.95; }
  80%  { opacity: 0.95; }
  100% { transform: translate(-60px, -35px);  opacity: 0; }
}

.a2-caption {
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  border-top: 1px solid var(--border);
  padding-top: 0.85rem;
  margin: 0 0 clamp(1.5rem, 3vw, 2rem);
  line-height: 1.6;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.chip {
  font-size: var(--fs-caption);
  letter-spacing: 0.06em;
  color: var(--text);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.7rem;
  background: var(--bg-elevated);
  line-height: 1.2;
}

/* ----------------------------------------------------------- pricing --- */
.group-label {
  font-size: var(--fs-caption);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: clamp(1.75rem, 4vw, 2.5rem) 0 1rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border);
}
.group-label:first-of-type { margin-top: 0; }

.price-grid { display: grid; gap: 1rem; }
@media (min-width: 760px) {
  .price-grid--two { grid-template-columns: 1fr 1fr; }
  .price-grid--three { grid-template-columns: repeat(3, 1fr); }
}

.price-card {
  position: relative;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 2.2vw, 1.6rem);
  display: flex;
  flex-direction: column;
}
.price-card--featured {
  background: var(--surface-3);
  border-color: var(--accent-muted);
  border-top: 3px solid var(--accent);
}
/* the badge is a tab on the top rule so all three tier names stay aligned */
.price-card--featured .badge {
  position: absolute;
  top: 0;
  right: clamp(1.25rem, 2.2vw, 1.6rem);
  transform: translateY(-50%);
  margin: 0;
}
@media (min-width: 760px) {
  .price-card--featured { transform: translateY(-5px); }
}
.price-name {
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin: 0 0 0.9rem;
}
.price-figure {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0 0 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.price-amount {
  font-size: clamp(1.6rem, 2.6vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.03em;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.price-unit {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  letter-spacing: 0.02em;
}
.price-terms {
  font-size: var(--fs-caption);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0 0 0.75rem;
}
.price-body { font-size: 0.9375rem; color: var(--text-muted); margin: 0; }

.badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  padding: 0.3rem 0.5rem;
  border-radius: var(--radius-sm);
  background: var(--accent-fill);
  color: var(--on-accent);
  margin: 0 0 0.9rem;
  line-height: 1.2;
}

.callout {
  margin: 1.25rem 0 0;
  padding: 0.85rem 0 0.85rem 1rem;
  border-left: 2px solid var(--accent);
  color: var(--text);
  font-size: 0.9375rem;
  max-width: var(--prose);
}
.terms-line {
  margin: 1.5rem 0 0;
  color: var(--text-muted);
  font-size: 0.9375rem;
  max-width: var(--prose);
}

/* -------------------------------------------------------------- band --- */
.section-band {
  background: var(--band-bg);
  border-top: 1px solid var(--band-bg);
  color: var(--band-text);
}
.sec-head--band { color: var(--band-muted); }
.sec-head--band .sec-idx { color: var(--band-text); }
.sec-head--band::after { background: var(--band-muted); opacity: 0.45; }
.band-inner h2 { color: var(--band-text); max-width: 24ch; }
.band-inner .prose { max-width: 60ch; }
.band-inner .prose p { color: var(--band-text); }
.band-inner .prose strong { color: var(--band-text); }
.band-cta { margin: 2rem 0 0; }

/* ------------------------------------------------------------- steps --- */
.steps-wrap { position: relative; }
.steps {
  --steps-gap: clamp(1.5rem, 3vw, 2.25rem);
  display: grid;
  gap: var(--steps-gap);
  position: relative;
}
@media (min-width: 800px) {
  .steps { grid-template-columns: repeat(3, 1fr); }
}
.step { position: relative; }

.step-marker { display: block; width: 52px; height: 52px; margin-bottom: 1.25rem; }
.step-ring { fill: none; stroke: var(--border-strong); stroke-width: 1.25; }
.step-fill {
  fill: var(--accent-muted);
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
  animation: a3-fill 6.4s ease-out infinite;
  animation-delay: var(--d, 0s);
}
@keyframes a3-fill {
  0%   { opacity: 0; transform: scale(0.94); }
  8%   { opacity: 1; transform: scale(1.08); }
  16%  { transform: scale(1); }
  88%  { opacity: 1; transform: scale(1); }
  94%  { opacity: 0; transform: scale(0.94); }
  100% { opacity: 0; transform: scale(0.94); }
}
.step-num {
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 500;
  fill: var(--text);
  letter-spacing: 0;
}

.step-link {
  position: absolute;
  display: block;
  overflow: visible;
}
.step-link--h {
  left: 52px;
  top: 25px;
  height: 3px;
  /* explicit width: an SVG is a replaced element, so width:auto would fall back
     to the intrinsic 100px and ignore the right offset */
  width: calc(100% - 52px + var(--steps-gap));
}
.step-link--v { display: none; }
@media (max-width: 799px) {
  .step-link--h { display: none; }
  /* markers move into a left gutter column so the steps stack */
  .steps { --marker-col: 52px; }
  .step {
    padding-left: calc(52px + 1.25rem);
    min-height: 52px;
  }
  .step-marker { position: absolute; left: 0; top: 0; margin-bottom: 0; }
  .step-link--v {
    display: block;
    left: 24.5px;
    top: 52px;
    width: 3px;
    height: calc(100% - 52px + var(--steps-gap));
    padding-top: 8px;
  }
}
/* Both rail paths are 100 user units long, so the dash pattern is exact without
   pathLength or non-scaling-stroke, which interact badly with dashes. */
.rail-line {
  fill: none;
  stroke: var(--border-strong);
  stroke-width: 1.5;
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: a3-draw 6.4s linear infinite;
}
.step:first-child .rail-line { animation-delay: 0s; }
.step:nth-child(2) .rail-line { animation-delay: 0.95s; }
@keyframes a3-draw {
  0%        { stroke-dashoffset: 100; }
  20%, 88%  { stroke-dashoffset: 0; }
  94%, 100% { stroke-dashoffset: 100; }
}

/* --------------------------------------------------------------- fit --- */
.fit-grid { display: grid; gap: 1.25rem; }
@media (min-width: 860px) { .fit-grid { grid-template-columns: 1fr 1fr; gap: 2rem; } }

.fit-col {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 2.4vw, 1.75rem);
  background: var(--bg-elevated);
}
.fit-col--yes { border-left: 3px solid var(--accent); }
.fit-col--no { border-left: 3px solid var(--border-strong); }
.fit-col h3 { margin-bottom: 1.25rem; }

.fit-list { display: grid; gap: 0.9rem; }
.fit-list li {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 0.75rem;
  align-items: start;
  font-size: 0.9375rem;
  line-height: 1.55;
}
.tick, .cross {
  width: 20px; height: 20px;
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-top: 0.2rem;
}
.tick { stroke: var(--accent); }
.cross { stroke: var(--text-muted); }
.fit-col--no .fit-list li { color: var(--text-muted); }

/* ---------------------------------------------------------- comparison --- */
.table-scroll {
  overflow-x: auto;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  -webkit-overflow-scrolling: touch;
}
.table-scroll:focus-visible { outline: 2px solid var(--accent-hover); outline-offset: 3px; }

.compare {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 0.9375rem;
}
.compare th, .compare td {
  padding: 0.85rem 1.05rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--border);
}
.compare thead th {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  font-weight: 400;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
  border-bottom: 1px solid var(--border-strong);
  padding-top: 1rem;
  padding-bottom: 1rem;
}
.compare tbody th {
  font-weight: 500;
  color: var(--text);
  white-space: nowrap;
}
.compare tbody td { color: var(--text-muted); }
.compare tbody tr:last-child th,
.compare tbody tr:last-child td { border-bottom: 0; }

.col-this { background: var(--surface-3); color: var(--text); }
.compare tbody .col-this strong { color: var(--text); font-weight: 500; }
.compare thead .col-this {
  color: var(--text);
  border-top: 2px solid var(--accent);
}

/* Below 760px the matrix becomes a stacked set of criterion blocks, each row
   labelled from data-label. A four-column table on a 390px screen is unreadable
   and a horizontal scroller hides the three columns being compared against. */
@media (max-width: 759px) {
  .compare { min-width: 0; }
  .compare thead { display: none; }
  .compare tbody, .compare tbody tr, .compare tbody th, .compare tbody td { display: block; }
  .compare tbody tr {
    padding: 1.1rem 1rem 1.15rem;
    border-bottom: 1px solid var(--border);
  }
  .compare tbody tr:last-child { border-bottom: 0; }
  .compare tbody th {
    padding: 0 0 0.7rem;
    font-size: 1rem;
    white-space: normal;
  }
  .compare tbody td {
    display: grid;
    grid-template-columns: minmax(0, 8rem) minmax(0, 1fr);
    gap: 0.7rem;
    align-items: baseline;
    padding: 0.3rem 0;
    white-space: normal;
  }
  .compare tbody td::before {
    content: attr(data-label);
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--text-muted);
    line-height: 1.6;
  }
  .compare tbody td.col-this {
    background: var(--surface-3);
    border-radius: var(--radius-sm);
    padding: 0.6rem 0.7rem;
    margin-top: 0.4rem;
  }
  .compare tbody td.col-this::before { color: var(--accent-text); }
}

/* ------------------------------------------------------------- about --- */
.about-grid { display: grid; gap: 1.5rem; }
@media (min-width: 900px) {
  .about-grid { grid-template-columns: minmax(0, 4fr) minmax(0, 7fr); gap: 3rem; }
}
.about-grid h2 { max-width: 16ch; }
.chips--about { margin-top: clamp(1.75rem, 4vw, 2.5rem); }

/* ----------------------------------------------------------- reviews --- */
.review-grid { display: grid; gap: 1rem; }
@media (min-width: 860px) { .review-grid { grid-template-columns: 1fr 1fr; gap: 1.25rem; } }

.review {
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: clamp(1.25rem, 2.4vw, 1.75rem);
}
.stars { display: flex; gap: 0.25rem; margin: 0; }
.stars svg { width: 13px; height: 13px; fill: var(--accent); display: block; }
.review blockquote p {
  margin: 0 0 0.85rem;
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--text);
  text-wrap: pretty;
}
.review blockquote p:last-child { margin-bottom: 0; }
.review figcaption {
  margin-top: auto;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.5rem 0.75rem;
  padding-top: 0.85rem;
  border-top: 1px solid var(--border);
}
.reviewer { font-weight: 500; }
.reviewer-role { font-size: var(--fs-sm); color: var(--text-muted); }
.review-meta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-left: auto;
}
.gmark { width: 13px; height: 13px; fill: var(--text-muted); display: block; }

.review-link {
  margin: 1.5rem 0 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------- faq --- */
.faq { border-top: 1px solid var(--border); }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-h { margin: 0; }
.faq-q {
  width: 100%;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 1rem;
  background: transparent;
  border: 0;
  padding: 1.15rem 0;
  text-align: left;
  color: var(--text);
  font-family: inherit;
  font-size: 1.0625rem;
  font-weight: 500;
  letter-spacing: -0.012em;
  line-height: 1.45;
  cursor: pointer;
  transition: color 0.15s ease;
}
.faq-q:hover { color: var(--accent-text); }
.faq-num {
  font-size: var(--fs-caption);
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding-top: 0.28em;
}
.faq-sign {
  position: relative;
  width: 16px; height: 16px;
  margin-top: 0.28em;
  flex: none;
}
.faq-sign::before, .faq-sign::after {
  content: "";
  position: absolute;
  background: var(--text-muted);
  transition: transform 0.2s ease, background-color 0.15s ease;
}
.faq-sign::before { top: 7px; left: 0; width: 16px; height: 1.5px; }
.faq-sign::after  { left: 7px; top: 0; width: 1.5px; height: 16px; }
.faq-q[aria-expanded="true"] .faq-sign::after { transform: scaleY(0); }
.faq-q[aria-expanded="true"] .faq-sign::before { background: var(--accent); }

.faq-panel {
  height: 0;
  overflow: hidden;
  visibility: hidden;
  transition: height 0.28s ease, visibility 0s linear 0.28s;
}
.faq-panel.is-open {
  visibility: visible;
  transition: height 0.28s ease, visibility 0s linear 0s;
}
.faq-panel > .faq-panel-inner { overflow: hidden; }
.faq-panel-inner p {
  margin: 0;
  padding: 0 3rem 1.35rem 2.6rem;
  color: var(--text-muted);
  max-width: var(--prose);
  font-size: 0.9375rem;
  line-height: 1.7;
}
@media (max-width: 560px) {
  .faq-panel-inner p { padding-left: 0; padding-right: 2rem; }
}

/* ----------------------------------------------------------- final cta --- */
.cta-block {
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius);
  background: var(--bg-elevated);
  padding: clamp(1.75rem, 4vw, 3rem);
}
.cta-block h2 { max-width: 22ch; }
.cta-block .lede { margin-bottom: 1.75rem; }
.cta-actions { margin: 0 0 1rem; }
.cta-alt { font-size: 0.9375rem; color: var(--text-muted); margin: 0; }

/* ------------------------------------------------------------ footer --- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: clamp(2.5rem, 6vw, 4rem) 0 2rem;
}
.footer-inner {
  display: grid;
  gap: 2rem;
}
@media (min-width: 720px) {
  .footer-inner { grid-template-columns: 2fr 1fr 1fr 1fr; gap: 2.5rem; }
}
.footer-brand p {
  margin: 1rem 0 0;
  font-size: 0.9375rem;
  color: var(--text-muted);
  max-width: 34ch;
}
.footer-label {
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
  margin: 0 0 0.9rem;
}
.footer-col ul { display: grid; gap: 0.55rem; }
.footer-col a {
  font-size: 0.9375rem;
  color: var(--text-muted);
  text-decoration: none;
}
.footer-col a:hover { color: var(--accent-text); text-decoration: underline; }

.footer-base {
  margin-top: clamp(2rem, 5vw, 3rem);
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: grid;
  gap: 0.5rem;
}
@media (min-width: 640px) {
  .footer-base { grid-template-columns: 1fr auto; align-items: baseline; }
}
.footer-net, .footer-copy {
  margin: 0;
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

/* ------------------------------------------------------------ reveals --- */
.js .reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.4s ease-out, transform 0.4s ease-out;
  transition-delay: var(--d, 0s);
}
.js .reveal.is-visible { opacity: 1; transform: none; }

/* Off-screen animation budget: pause decorative SVG loops out of view. */
.anim-paused, .anim-paused * { animation-play-state: paused !important; }

/* ================================================== animation 1: hero === */
.anim-hero { display: block; width: 100%; height: auto; }

.a1-edge {
  fill: none;
  stroke: var(--border-strong);
  stroke-width: 1.25;
  stroke-dasharray: 155;
  stroke-dashoffset: 155;
  animation: a1-edge 11s ease-in-out infinite;
  animation-delay: var(--d, 0s);
}
@keyframes a1-edge {
  0%, 27%   { stroke-dashoffset: 155; }
  62%, 86%  { stroke-dashoffset: 0; }
  91%, 100% { stroke-dashoffset: 155; }
}

.a1-node {
  fill: var(--bg-elevated);
  stroke: var(--border-strong);
  stroke-width: 1.5;
  animation: a1-node 11s ease-in-out infinite;
}
.a1-node--warn {
  animation: a1-node 11s ease-in-out infinite, a1-warn 11s ease-in-out infinite;
}
/* the nodes only scatter once the edges have fully retracted, so a drawn line
   never dangles with its endpoint in flight */
@keyframes a1-node {
  0%, 27%   { transform: translate(var(--tx), var(--ty)); }
  64%, 92%  { transform: translate(0, 0); }
  100%      { transform: translate(var(--tx), var(--ty)); }
}
@keyframes a1-warn {
  0%, 27%   { stroke: var(--warn); }
  45%, 86%  { stroke: var(--accent); }
  93%, 100% { stroke: var(--warn); }
}

.a1-hub-core { fill: var(--accent); }
.a1-hub-halo {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1;
  opacity: 0;
  transform-box: fill-box;
  transform-origin: center;
  animation: a1-halo 11s ease-in-out infinite;
}
@keyframes a1-halo {
  0%, 27%   { opacity: 0; transform: scale(0.6); }
  50%, 84%  { opacity: 0.85; transform: scale(1); }
  89%, 100% { opacity: 0; transform: scale(0.6); }
}

.a1-pulse-window { animation: a1-window 11s linear infinite; }
@keyframes a1-window {
  0%, 62%   { opacity: 0; }
  70%, 86%  { opacity: 1; }
  90%, 100% { opacity: 0; }
}
.a1-pulse {
  fill: var(--accent);
  opacity: 0;
  animation: a1-travel 4s linear infinite;
}
@keyframes a1-travel {
  0%   { transform: translate(0, 0); opacity: 0; }
  15%  { opacity: 0.9; }
  85%  { opacity: 0.9; }
  100% { transform: translate(var(--dx), var(--dy)); opacity: 0; }
}

/* ------------------------------------------------------- wide screens --- */
@media (min-width: 1400px) {
  :root { --wrap: 1240px; }
}

/* -------------------------------------------------------- small fixes --- */
@media (max-width: 400px) {
  .btn { width: 100%; }
  .hero-ctas { flex-direction: column; align-items: stretch; }
  .header-actions .btn { width: auto; }
}

/* --------------------------------------------------- reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .js .reveal,
  .js .reveal.is-visible {
    opacity: 1;
    transform: none;
    transition: none;
  }

  * , *::before, *::after {
    animation-duration: 0s !important;
    animation-delay: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0s !important;
    transition-delay: 0s !important;
  }

  /* --- animation 1: static ordered network --- */
  .a1-edge { animation: none; stroke-dashoffset: 0; }
  .a1-node, .a1-node--warn { animation: none; transform: none; }
  .a1-node--warn { stroke: var(--accent); }
  .a1-hub-halo { animation: none; opacity: 1; transform: none; }
  .a1-pulse-window, .a1-pulse { animation: none; opacity: 0; }

  /* --- animation 2: static mid-flight contrast --- */
  .a2-travel--out { animation: none; transform: translate(28px, -148px); opacity: 1; }
  .a2-travel--in { animation: none; transform: translate(0, -88px); opacity: 1; }
  .a2-doc { animation: none; stroke: var(--accent); }
  .a2-doc--out { stroke: var(--warn); }
  .a2-contain { animation: none; opacity: 0.85; transform: none; }
  .a2-return { animation: none; }
  .a2-return-dot { animation: none; opacity: 0.5; transform: translate(-30px, -18px); }

  /* --- animation 3: static completed process --- */
  .rail-line { animation: none; stroke-dashoffset: 0; }
  .step-fill { animation: none; opacity: 1; transform: none; }
}