/*
  Zone Blanche Ltd — FlowZB Website
  style.css
  ─────────────────────────────────────────────────────────────
  Structure:
    1.  CSS Custom Properties (design tokens)
    2.  Reset & Base
    3.  Typography — eyebrow / display / lede pattern
    4.  Layout Utilities
    5.  Header & Navigation
    6.  Mobile Navigation
    7.  Hero Section
    8.  Section Globals
    9.  About Section
    10. Session Modalities Section
    11. Features Section
    12. MFS-1 Device Section
    13. Guides Section
    14. Privacy Section
    15. Support Section
    16. Contact & Form
    17. Footer
    18. Utilities (back-to-top, preloader)
    19. Responsive Overrides
  ─────────────────────────────────────────────────────────────
*/


/* ============================================================
   1. CSS CUSTOM PROPERTIES
   All colours, fonts, spacing and radii live here.
   ============================================================ */

:root {
  /* — Brand colours (FlowZB v1.0 spec, dark-mode values) — */
  --color-navy:       #0A1628;
  --color-gold:       #F0C030;
  --color-surface:    #132236;
  --color-card:       #1A2E47;
  --color-card-2:     #20385A;
  --color-muted:      #667788;
  --color-positive:   #2ECC8A;
  --color-caution:    #E8A020;

  /* — Web-only tokens — */
  --color-text:       #E8EDF2;
  --color-text-dim:   #99AABB;
  --color-border:     #1F3A57;
  --color-border-hi:  #2C4A6F;
  --color-on-gold:    #0A1628;
  --color-disabled:   #445566;

  /* — Fonts — */
  --font-body:  "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --font-mono:  "SF Mono", "Cascadia Mono", "JetBrains Mono", ui-monospace, "Consolas", monospace;

  /* — Spacing — */
  --sp-section: 120px;
  --sp-stack:   28px;
  --sp-gap:     24px;

  /* — Typography — */
  --leading: 1.7;

  /* — Border radii — */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;

  /* — Motion — */
  --ease: cubic-bezier(.2,.7,.2,1);
  --transition-fast: .2s;
  --transition-std:  .3s;

  /* — Header — */
  --header-h: 72px;
}

/* Compact density override */
html[data-density="compact"] {
  --sp-section: 72px;
  --sp-stack:   18px;
  --sp-gap:     16px;
  --leading:    1.55;
}

.screenshots-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 64px;
  padding-top: 64px;
  border-top: 1px solid var(--color-border);
}

.screenshot-frame {
  width: 100%;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--color-border-hi);
  box-shadow: 0 24px 60px rgba(0,0,0,0.4);
  transition: transform var(--transition-std) var(--ease),
              box-shadow var(--transition-std) var(--ease);
}

.screenshot-frame:hover {
  transform: translateY(-6px);
  box-shadow: 0 36px 80px rgba(0,0,0,0.5);
}

.screenshot-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.screenshot-frame-2 {
  width: 100%;
  margin-top: 10%;
  border-radius: 22px;
  overflow: hidden;
  border: 1px solid var(--color-border-hi);
  box-shadow: 0 24px 60px rgba(0,0,0,0.4);
  transition: transform var(--transition-std) var(--ease),
              box-shadow var(--transition-std) var(--ease);
}

@media (max-width: 768px) {
  .screenshots-strip {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
}

@media (max-width: 480px) {
  .screenshots-strip {
    grid-template-columns: 1fr 1fr;
  }
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--color-navy);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: var(--leading);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }

a {
  color: var(--color-gold);
  text-decoration: none;
  transition: color var(--transition-fast) var(--ease);
}
a:hover { color: var(--color-text); }

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

@media screen and (max-width: 768px) {
  [data-aos-delay] { transition-delay: 0 !important; }
}


/* ============================================================
   3. TYPOGRAPHY — eyebrow / display / lede editorial pattern
   ============================================================ */

/* Section eyebrow — mono, gold, dashed rule before it */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--color-gold);
  display: inline-block;
}

/* Display heading — large, light weight, with animated gradient on <em> */
.display {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(2rem, 5vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.015em;
  color: var(--color-text);
  margin: 0 0 calc(var(--sp-stack) * 0.7) 0;
  text-wrap: balance;
}
.display em {
  font-style: normal;
  font-weight: 600;
  background: linear-gradient(95deg, var(--color-gold) 0%, var(--color-positive) 60%, var(--color-caution) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* Lede — slightly larger body intro text */
.lede {
  font-size: clamp(1rem, 1.4vw, 1.15rem);
  color: var(--color-text-dim);
  max-width: 60ch;
  margin: 0 0 var(--sp-stack);
}


/* ============================================================
   4. LAYOUT UTILITIES
   ============================================================ */

.wrap {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
}
.wrap-narrow { max-width: 920px; }

section {
  padding: var(--sp-section) 0;
  position: relative;
}

.bg-surface { background: var(--color-surface); }
.bg-card    { background: var(--color-card); }

/* Two-column section header — eyebrow+heading left, lede right */
.section-head {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 80px;
  align-items: end;
  margin-bottom: 64px;
}
.section-head .lede { margin-bottom: 0; }

.divider-rule {
  height: 1px;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--color-border) 20%, var(--color-border) 80%, transparent);
  margin: 0;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 13.5px;
  letter-spacing: 0.01em;
  padding: 9px 18px;
  border-radius: 999px;
  cursor: pointer;
  transition: all .25s var(--ease);
  border: 1px solid transparent;
  text-decoration: none;
}
.btn-primary {
  background: var(--color-gold);
  color: var(--color-on-gold);
  border-color: var(--color-gold);
}
.btn-primary:hover {
  background: #ffd84a;
  border-color: #ffd84a;
  color: var(--color-on-gold);
}
.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border-color: var(--color-border-hi);
}
.btn-ghost:hover {
  color: var(--color-gold);
  border-color: var(--color-gold);
  background: rgba(240,192,48,0.06);
}


/* ============================================================
   5. HEADER & DESKTOP NAVIGATION
   ============================================================ */

#header {
  position: fixed;
  inset: 0 0 auto 0;
  height: var(--header-h);
  z-index: 100;
  display: flex;
  align-items: center;
  transition: background .35s var(--ease), border-color .35s var(--ease);
  border-bottom: 1px solid transparent;
}
#header.scrolled {
  background: rgba(10,22,40,0.78);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom-color: var(--color-border);
}

#header .inner {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

/* Brand mark + wordmark */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--color-text);
  font-weight: 600;
  text-decoration: none;
}
.brand-mark {
  width: 32px;
  height: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.brand-mark svg { width: 100%; height: 100%; }
.brand-text {
  font-size: 13px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}
.brand-text span { color: var(--color-gold); }

/* Desktop nav */
.nav-menu ul {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-menu a {
  display: inline-block;
  padding: 8px 12px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--color-text-dim);
  border-radius: 8px;
  transition: color var(--transition-fast) var(--ease),
              background var(--transition-fast) var(--ease);
}
.nav-menu a:hover {
  color: var(--color-text);
  background: rgba(255,255,255,0.04);
}
.nav-menu li.active a { color: var(--color-gold); }
.nav-menu .coming a {
  color: var(--color-disabled);
  pointer-events: none;
}
.nav-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
  background: rgba(232,160,32,0.16);
  color: var(--color-caution);
  border: 1px solid rgba(232,160,32,0.4);
  border-radius: 4px;
  padding: 1px 5px;
  margin-left: 6px;
  vertical-align: middle;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: 0;
  color: var(--color-text);
  font-size: 22px;
  cursor: pointer;
  padding: 6px;
}


/* ============================================================
   6. MOBILE NAVIGATION
   ============================================================ */

.mobile-drawer {
  position: fixed;
  inset: var(--header-h) 0 0 0;
  background: rgba(10,22,40,0.96);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 90;
  padding: 28px;
  display: none;
  flex-direction: column;
  gap: 4px;
}
.mobile-drawer.open { display: flex; }
.mobile-drawer a {
  padding: 14px 6px;
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}
.mobile-drawer a.coming {
  color: var(--color-disabled);
  pointer-events: none;
}


/* ============================================================
   7. HERO SECTION
   ============================================================ */

#hero {
  min-height: 100vh;
  padding: calc(var(--header-h) + 40px) 0 60px;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

/* Ambient radial glow */
#hero::before {
  content: "";
  position: absolute;
  top: 40%; left: 50%;
  transform: translate(-50%, -50%);
  width: min(900px, 95vw);
  height: min(900px, 95vw);
  background: radial-gradient(ellipse at center,
    rgba(240,192,48,0.07) 0%,
    rgba(46,204,138,0.04) 30%,
    transparent 65%);
  pointer-events: none;
  z-index: 0;
}

/* Faint grid overlay */
#hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse at 50% 40%, black 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 50% 40%, black 0%, transparent 75%);
  pointer-events: none;
  z-index: 0;
}

.hero-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  align-items: center;
  gap: 60px;
}

/* The 7-path animated SVG mark */
.hero-mark {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 440px;
  justify-self: end;
}
.hero-mark svg {
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 30px 60px rgba(46,204,138,0.18));
}

/* Version / status pill */
.hero-title-row {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}
.hero-status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}
.hero-status .dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--color-positive);
  box-shadow: 0 0 0 4px rgba(46,204,138,0.18);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: .35; }
}

.hero-kicker {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 22px;
}

.hero h1 {
  font-family: var(--font-body);
  font-size: clamp(3rem, 8vw, 6rem);
  font-weight: 200;
  letter-spacing: -0.04em;
  line-height: 0.95;
  margin: 0 0 18px;
  color: var(--color-text);
}
.hero h1 strong {
  font-weight: 700;
  background: linear-gradient(110deg, var(--color-gold) 0%, var(--color-positive) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-lede {
  font-size: clamp(1rem, 1.6vw, 1.2rem);
  line-height: 1.55;
  color: var(--color-text-dim);
  max-width: 52ch;
  margin: 0 0 36px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

/* App Store badge */
.app-store {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: linear-gradient(180deg, var(--color-card-2) 0%, var(--color-surface) 100%);
  border: 1px solid var(--color-border-hi);
  border-radius: 12px;
  padding: 10px 20px;
  color: var(--color-text);
  font-weight: 600;
  transition: all .25s var(--ease);
  text-decoration: none;
}
.app-store:hover {
  border-color: var(--color-gold);
  color: var(--color-text);
  transform: translateY(-1px);
}
.app-store .ico { line-height: 1; color: var(--color-text); }
.app-store .ico svg { width: 22px; height: 22px; }
.app-store .copy {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}
.app-store .copy small {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-text-dim);
  text-transform: uppercase;
}
.app-store .copy strong {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.01em;
}

/* Hero meta strip */
.hero-meta {
  margin-top: 56px;
  display: flex;
  flex-wrap: wrap;
  gap: 32px 48px;
  padding-top: 28px;
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
}
.hero-meta span strong {
  color: var(--color-text);
  font-weight: 600;
  letter-spacing: 0.12em;
}


/* ============================================================
   8. SECTION GLOBALS
   ============================================================ */

/* Alternating backgrounds */
section.bg-surface { background: var(--color-surface); }
section#about      { background: var(--color-surface); }
section#modalities { background: var(--color-surface); padding-top: 0; }
section#features   { background: var(--color-surface); }
section#device     { background: var(--color-navy); }
section#guides     { background: var(--color-surface); }
section#privacy    { background: var(--color-navy); }
section#support    { background: var(--color-surface); }
section#contact    { background: var(--color-navy); }


/* ============================================================
   9. ABOUT SECTION
   ============================================================ */

#about .about-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
  gap: 72px;
  align-items: start;
}

#about .about-copy h3 {
  font-family: var(--font-body);
  font-size: clamp(1.4rem, 2.2vw, 1.8rem);
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--color-text);
  margin: 0 0 var(--sp-stack);
}
#about .about-copy p {
  color: var(--color-text-dim);
  font-size: 1rem;
  margin: 0 0 18px;
}

#about .pullquote {
  border-left: 2px solid var(--color-gold);
  padding: 4px 0 4px 22px;
  margin: 28px 0;
  font-size: 1.1rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--color-text);
  font-style: normal;
}
#about .pullquote::before { content: '"'; color: var(--color-gold); margin-right: 2px; }
#about .pullquote::after  { content: '"'; color: var(--color-gold); margin-left: 2px; }

/* Snapshot vs longitudinal visual */
.vis-snapshot {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.02), transparent), var(--color-card);
  padding: 24px;
  overflow: hidden;
}
.vis-snapshot .vis-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 16px;
}
.vis-snapshot .vis-head strong { color: var(--color-text); font-weight: 600; }
.vis-snapshot .vis-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 18px;
}
.vis-cell {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px;
  background: rgba(0,0,0,0.16);
}
.vis-cell .label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-muted);
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
}
.vis-cell .label .tag {
  color: var(--color-gold);
  border: 1px solid rgba(240,192,48,0.4);
  padding: 1px 5px;
  border-radius: 3px;
  font-size: 9px;
}
.vis-cell .label .tag.green {
  color: var(--color-positive);
  border-color: rgba(46,204,138,0.4);
}
.vis-cell svg { display: block; width: 100%; height: 80px; }
.vis-foot {
  display: flex;
  gap: 18px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-muted);
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
}
.vis-foot span strong { color: var(--color-text); font-weight: 600; }


/* ============================================================
   10. SESSION MODALITIES SECTION
   ============================================================ */

#modalities .wrap {
  padding-top: var(--sp-section);
  border-top: 1px solid var(--color-border);
}
#modalities .mod-head {
  margin-bottom: 56px;
  max-width: 720px;
}
#modalities h2 {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: clamp(1.6rem, 3.5vw, 2.4rem);
  letter-spacing: -0.02em;
  margin: 0 0 14px;
}

.modalities-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.mod-card {
  position: relative;
  background: linear-gradient(180deg, var(--color-card-2) 0%, var(--color-card) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  overflow: hidden;
  transition: border-color var(--transition-std) var(--ease),
              transform var(--transition-std) var(--ease);
}
.mod-card:hover {
  border-color: var(--color-gold);
  transform: translateY(-4px);
}
.mod-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 100% 0%, rgba(240,192,48,0.06), transparent 60%);
  pointer-events: none;
}
.mod-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--color-muted);
  margin-bottom: 24px;
}
.mod-icon {
  width: 88px;
  height: 88px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
  margin-bottom: 24px;
}
.mod-icon svg { width: 100%; height: 100%; }
.mod-card h3 {
  font-size: 1.35rem;
  font-weight: 600;
  margin: 0 0 6px;
  color: var(--color-text);
}
.mod-card .mod-sub {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-positive);
  margin-bottom: 14px;
}
.mod-card p {
  font-size: 0.95rem;
  color: var(--color-text-dim);
  margin: 0;
}


/* ============================================================
   11. FEATURES SECTION — 4 layout variants via data-feat attr
   ============================================================ */

.features-grid {
  display: flex;
  gap: 20px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: 16px;
  margin-top: 12px;
  scrollbar-width: none;
}
.features-grid::-webkit-scrollbar { display: none; }

/* Layout B — Stacked rows */
[data-feat="rows"] .features-grid {
  grid-template-columns: 1fr;
  gap: 0;
}
[data-feat="rows"] .feat-card {
  display: grid;
  grid-template-columns: 80px 1fr auto;
  gap: 32px;
  align-items: center;
  padding: 28px 32px;
  border-radius: 0;
  border: 0;
  border-bottom: 1px solid var(--color-border);
  background: transparent;
}
[data-feat="rows"] .feat-card:first-child { border-top: 1px solid var(--color-border); }
[data-feat="rows"] .feat-card .feat-num { position: static; }
[data-feat="rows"] .feat-card .feat-icon-wrap {
  width: 64px; height: 64px;
  background: rgba(240,192,48,0.06);
  border: 1px solid rgba(240,192,48,0.25);
  border-radius: 14px;
  display: flex; align-items: center; justify-content: center;
}
[data-feat="rows"] .feat-card h4 { margin-top: 0; }
[data-feat="rows"] .feat-card .feat-tag {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--color-muted);
}

/* Layout C — Split two wide cards */
[data-feat="split"] .features-grid { grid-template-columns: repeat(2, 1fr); }
[data-feat="split"] .feat-card { min-height: 320px; }

/* Layout D — Phone centred with callouts */
[data-feat="phone"] .features-grid {
  grid-template-columns: 1fr minmax(280px, 360px) 1fr;
  gap: 48px;
  align-items: center;
}
[data-feat="phone"] .feat-phone {
  grid-row: 1 / span 2;
  grid-column: 2;
  background: linear-gradient(180deg, var(--color-card-2), var(--color-card));
  border: 1px solid var(--color-border-hi);
  border-radius: 36px;
  aspect-ratio: 9 / 19;
  padding: 16px;
  position: relative;
  overflow: hidden;
}
[data-feat="phone"] .feat-phone-inner {
  width: 100%; height: 100%;
  background: var(--color-navy);
  border-radius: 24px;
  border: 1px solid var(--color-border);
  display: flex; flex-direction: column; align-items: center;
  padding: 28px 16px;
  text-align: center;
  color: var(--color-text-dim);
  font-family: var(--font-mono);
  font-size: 10px; letter-spacing: 0.15em; text-transform: uppercase;
}
[data-feat="phone"] .feat-phone-inner strong {
  color: var(--color-gold);
  display: block;
  margin-bottom: 8px;
  font-size: 12px;
}
[data-feat="phone"] .feat-card { padding: 20px; }
[data-feat="phone"] .feat-card.left  { grid-column: 1; text-align: right; }
[data-feat="phone"] .feat-card.right { grid-column: 3; }
[data-feat="phone"] .feat-card .feat-icon-wrap { display: none; }
[data-feat="phone"] .feat-card .feat-num { position: static; margin-bottom: 8px; }

/* Shared feature card chrome */
.feat-card {
  flex: 0 0 420px;
  height: 380px;
  scroll-snap-align: start;
  position: relative;
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto auto auto;
  gap: 0 20px;
  align-content: start;
  transition: transform var(--transition-std) var(--ease),
              border-color var(--transition-std) var(--ease),
              box-shadow var(--transition-std) var(--ease);
}

.feat-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-border-hi);
  box-shadow: 0 16px 40px rgba(0,0,0,0.35);
}

.feat-num {
  position: static;
  grid-column: 1;
  grid-row: 1;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--color-muted);
  margin-bottom: 12px;
  align-self: start;
}

.feat-icon-wrap {
  grid-column: 1;
  grid-row: 2;
  width: 56px;
  height: 56px;
  background: rgba(240,192,48,0.08);
  border: 1px solid rgba(240,192,48,0.25);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gold);
  margin-bottom: 16px;
  align-self: start;
}

.feat-card h4 {
  grid-column: 1;
  grid-row: 3;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 8px;
}

.feat-card p {
  grid-column: 1;
  grid-row: 4;
  font-size: 0.92rem;
  color: var(--color-text-dim);
  margin: 0;
  line-height: 1.65;
  align-self: start;
}

/* Hide chart motifs — screenshot replaces them */
.feat-chart { display: none; }

/* Screenshot — right column, spans all rows */
.feat-screenshot {
  grid-column: 2;
  grid-row: 1 / span 4;
  width: 130px;
  height: 280px;
  border-radius: 16px;
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--color-border);
  align-self: start;
  position: relative;
}

.feat-screenshot img {
  display: block;
  width: 100%;
  height: 100%;         /* keep this — container now controls it */
  object-fit: cover;
  object-position: top;
  transition: transform var(--transition-std) var(--ease);
}

.feat-screenshot:hover img {
  transform: scale(1.03);
}

.feat-screenshot-expand {
  position: absolute;
  bottom: 8px;
  right: 8px;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  background: rgba(10,22,40,0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.feat-screenshot:hover .feat-screenshot-expand {
  opacity: 1;
}

/* ============================================================
   PRICING SECTION
   ============================================================ */

section#pricing { background: var(--color-navy); }

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  margin-top: 12px;
}

.pricing-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-card);
}

.pricing-card-pro {
  border-color: var(--color-gold);
  background: linear-gradient(180deg, rgba(240,192,48,0.06) 0%, var(--color-card) 40%);
}

.pricing-card-header {
  padding: 28px 28px 24px;
  border-bottom: 1px solid var(--color-border);
}

.pricing-card-pro .pricing-card-header {
  border-bottom-color: rgba(240,192,48,0.2);
}

.pricing-tier-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 8px;
}

.pricing-card-pro .pricing-tier-label {
  color: var(--color-gold);
}

.pricing-tier-price {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
  margin-bottom: 8px;
  letter-spacing: -0.02em;
}

.pricing-tier-note {
  font-size: 0.85rem;
  color: var(--color-muted);
  margin: 0;
}

.pricing-features {
  list-style: none;
  margin: 0;
  padding: 24px 28px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.pricing-features li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.95rem;
  color: var(--color-text-dim);
  line-height: 1.5;
}

.pricing-features li strong {
  color: var(--color-text);
  font-weight: 600;
}

.pf-icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 1px;
}

.pf-icon svg {
  width: 12px;
  height: 12px;
}

.pf-free {
  background: rgba(46, 204, 138, 0.15);
  color: var(--color-positive);
}

.pf-pro {
  background: rgba(240, 192, 48, 0.15);
  color: var(--color-gold);
}

@media (max-width: 768px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================================
   12. MFS-1 DEVICE SECTION
   ============================================================ */

#device .device-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.2fr);
  gap: 80px;
  align-items: center;
}

.device-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--color-caution);
  border: 1px solid rgba(232,160,32,0.35);
  background: rgba(232,160,32,0.08);
  border-radius: 999px;
  padding: 6px 14px;
  margin-bottom: 22px;
}
.device-badge .pill-dot {
  width: 6px; height: 6px;
  border-radius: 999px;
  background: var(--color-caution);
  animation: pulse 2.4s infinite;
}

#device p { color: var(--color-text-dim); margin: 0 0 18px; font-size: 1rem; }
#device .display em {
  background: linear-gradient(95deg, var(--color-caution), var(--color-gold));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.device-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
  margin-top: 24px;
}
.spec {
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 14px 16px;
  background: rgba(255,255,255,0.015);
}
.spec .k {
  font-family: var(--font-mono); font-size: 10px;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 4px;
}
.spec .v { font-size: 1rem; font-weight: 600; color: var(--color-text); }
.spec .v em { color: var(--color-gold); font-style: normal; }

.device-render {
  aspect-ratio: 1 / 1;
  position: relative;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(circle at 30% 30%, rgba(240,192,48,0.08), transparent 50%),
    linear-gradient(160deg, var(--color-card-2), var(--color-card));
  overflow: hidden;
}
.device-placeholder {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  color: var(--color-text-dim);
  text-align: center; padding: 24px;
}
.device-placeholder .ph-shape {
  width: 60%; aspect-ratio: 4/3;
  background:
    repeating-linear-gradient(45deg, transparent 0 12px, rgba(255,255,255,0.025) 12px 13px),
    var(--color-card);
  border: 1px dashed var(--color-border-hi);
  border-radius: 18px;
  margin-bottom: 24px;
}
.device-placeholder .ph-label {
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--color-muted);
}
.device-placeholder .ph-label strong { color: var(--color-text); font-weight: 600; }


/* ============================================================
   13. GUIDES SECTION
   ============================================================ */

.guides-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
  margin-top: 12px;
}

.guide-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-std) var(--ease),
              border-color var(--transition-std) var(--ease);
  cursor: pointer;
}

.guide-card .thumb {
  position: relative;
  aspect-ratio: 16/9;
  overflow: hidden;
  background: #0D1B2D;
}

/* Poster image */
.guide-poster {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  z-index: 1;
}

/* Play button overlay */
.guide-play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

/* Video element — hidden until clicked */
.guide-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: none;
  z-index: 3;
}

/* Skeleton placeholder cards */
.guide-card.skeleton .thumb {
  background: linear-gradient(135deg, #14253B, #0D1B2D);
}
.guide-card.skeleton .thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 30% 50%, rgba(240,192,48,0.05), transparent 50%),
    repeating-linear-gradient(135deg, transparent 0 24px, rgba(255,255,255,0.02) 24px 25px);
  pointer-events: none;
}

.guide-card .body { padding: 18px 20px 22px; }
.guide-card h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 6px;
}
.guide-card .meta {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-muted);
  display: flex;
  gap: 12px;
}

.guides-note {
  margin-top: 36px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-muted);
}
.guides-note a { color: var(--color-gold); }

.guide-card:not(.skeleton) .thumb::after {
  display: none;
}

/* ============================================================
   14. PRIVACY SECTION
   ============================================================ */

#privacy {
  position: relative;
}
#privacy::before {
  content: "";
  position: absolute; inset: 0;
  background:
    radial-gradient(circle at 90% 10%, rgba(46,204,138,0.05), transparent 50%),
    radial-gradient(circle at 10% 90%, rgba(46,204,138,0.04), transparent 50%);
  pointer-events: none;
}
#privacy .wrap { position: relative; }

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-card);
}
.privacy-claim {
  padding: 32px;
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-std) var(--ease);
}
.privacy-claim:nth-child(2n)      { border-right: 0; }
.privacy-claim:nth-last-child(-n+2) { border-bottom: 0; }
.privacy-claim:hover               { background: var(--color-card-2); }

.claim-icon {
  width: 40px; height: 40px;
  color: var(--color-positive);
  margin-bottom: 18px;
  display: flex; align-items: center; justify-content: center;
}
.claim-icon svg { width: 100%; height: 100%; }

.privacy-claim h4 {
  font-size: 1.15rem; font-weight: 600;
  color: var(--color-text);
  margin: 0 0 8px;
}
.privacy-claim p {
  font-size: 0.92rem; color: var(--color-text-dim);
  margin: 0; line-height: 1.65;
}

.privacy-note {
  text-align: center;
  margin-top: 32px;
  color: var(--color-text-dim);
  font-size: 0.95rem;
}


/* ============================================================
   15. SUPPORT SECTION
   ============================================================ */

.support-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
  gap: 64px;
  align-items: start;
}

/* Accordion FAQ using native <details> */
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: 22px 0;
  border-bottom: 1px solid var(--color-border);
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
  font-size: 1.02rem; font-weight: 600;
  color: var(--color-text);
  transition: color .25s var(--ease);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  font-family: var(--font-mono); font-weight: 400;
  font-size: 22px; color: var(--color-gold);
  flex-shrink: 0;
  transition: transform var(--transition-std) var(--ease);
}
.faq[open] summary::after { content: "−"; }
.faq[open] summary { color: var(--color-gold); }

.faq .answer {
  padding: 14px 0 28px;
  color: var(--color-text-dim);
  font-size: 0.95rem;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.7;
}

.support-aside {
  position: sticky;
  top: calc(var(--header-h) + 24px);
  background: linear-gradient(180deg, var(--color-card-2) 0%, var(--color-card) 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}
.support-aside .kicker {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 14px;
}
.support-aside h3 {
  font-weight: 500; font-size: 1.4rem; line-height: 1.3;
  margin: 0 0 14px;
}
.support-aside p { color: var(--color-text-dim); font-size: 0.95rem; margin: 0 0 22px; }
.support-aside .email-link {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--color-gold); font-weight: 600;
  border: 1px solid var(--color-border-hi);
  border-radius: 10px;
  padding: 10px 16px;
  transition: all .25s var(--ease);
}
.support-aside .email-link:hover {
  border-color: var(--color-gold);
  background: rgba(240,192,48,0.06);
  color: var(--color-gold);
}
.support-aside .email-link svg { width: 16px; height: 16px; }


/* ============================================================
   16. CONTACT & FORM
   ============================================================ */

#contact .wrap-narrow { max-width: 760px; }

.form-card {
  background: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  margin-top: 40px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.form-group { margin-bottom: 18px; }
.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: 8px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  background: var(--color-navy);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  padding: 12px 14px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast) var(--ease),
              background var(--transition-fast) var(--ease);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-gold);
  background: rgba(240,192,48,0.04);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--color-muted); }
.form-group textarea { min-height: 140px; resize: vertical; }

.form-status {
  font-family: var(--font-mono); font-size: 13px;
  letter-spacing: 0.1em;
  margin: 12px 0;
  display: none;
}
.form-status.show { display: block; }
.form-status.ok  { color: var(--color-positive); }
.form-status.err { color: #ff7a59; }

.form-actions {
  display: flex;
  justify-content: flex-end;
  padding-top: 6px;
}


/* ============================================================
   17. FOOTER
   ============================================================ */

#footer {
  background: var(--color-navy);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 36px;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr) minmax(0, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}
.footer-brand p {
  color: var(--color-text-dim); font-size: 0.92rem;
  margin: 18px 0 0; max-width: 36ch;
}
.footer-col h5 {
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--color-muted);
  margin: 0 0 18px; font-weight: 500;
}
.footer-col a {
  display: block; padding: 5px 0;
  color: var(--color-text-dim); font-size: 0.93rem;
}
.footer-col a:hover { color: var(--color-gold); }

.footer-bottom {
  display: flex; justify-content: space-between; align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  font-family: var(--font-mono); font-size: 11px;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--color-muted);
  gap: 24px; flex-wrap: wrap;
}


/* ============================================================
   18. UTILITIES
   ============================================================ */

/* Preloader */
#preloader {
  position: fixed; inset: 0;
  z-index: 9999;
  background: var(--color-navy);
  display: flex; align-items: center; justify-content: center;
}
@keyframes preloader-spin { to { transform: rotate(360deg); } }
#preloader::after {
  content: '';
  width: 40px; height: 40px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-gold);
  border-radius: 50%;
  animation: preloader-spin 0.8s linear infinite;
}

/* Back to top */
.back-top {
  position: fixed; right: 28px; bottom: 28px;
  width: 44px; height: 44px;
  border-radius: 999px;
  background: var(--color-card);
  border: 1px solid var(--color-border-hi);
  color: var(--color-text);
  display: none;
  align-items: center; justify-content: center;
  z-index: 50;
  transition: all .25s var(--ease);
  text-decoration: none;
}
.back-top.show { display: flex; }
.back-top:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
  transform: translateY(-2px);
}


/* ============================================================
   19. RESPONSIVE OVERRIDES
   ============================================================ */

@media (max-width: 980px) {
  :root { --sp-section: 80px; }

  .nav-menu { display: none; }
  .nav-cta .btn-ghost { display: none; }
  .mobile-toggle { display: inline-flex; align-items: center; justify-content: center; }

  .hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .hero-mark { justify-self: start; max-width: 260px; }

  .section-head { grid-template-columns: 1fr; gap: 16px; }

  #about .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .vis-snapshot { position: static; }

  .modalities-row { grid-template-columns: 1fr; }

  [data-feat="split"] .features-grid,
  [data-feat="phone"] .features-grid { grid-template-columns: 1fr; }
  [data-feat="phone"] .feat-phone { grid-row: auto; grid-column: 1; max-width: 280px; margin: 0 auto; }
  [data-feat="phone"] .feat-card.left { text-align: left; }
  [data-feat="phone"] .feat-card.left,
  [data-feat="phone"] .feat-card.right { grid-column: 1; }

  #device .device-grid { grid-template-columns: 1fr; gap: 48px; }

  .privacy-grid { grid-template-columns: 1fr; }
  .privacy-claim { border-right: 0 !important; }
  .privacy-claim:not(:last-child) { border-bottom: 1px solid var(--color-border); }

  .support-grid { grid-template-columns: 1fr; }
  .support-aside { position: static; }

  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }

  .form-row { grid-template-columns: 1fr; }
  .form-card { padding: 24px; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 20px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}