/* ========================================================
   SilentPost — Landing Page Styles
   ======================================================== */

:root {
  --bg: #0B0B0F;
  --card: #13131A;
  --surface: rgba(255,255,255,0.03);
  --surface-hover: rgba(255,255,255,0.05);
  --border: rgba(255,255,255,0.07);
  --border-light: rgba(255,255,255,0.11);
  --text: #F5F5F7;
  --text-2: #9A9AA6;
  --text-3: rgba(154,154,166,0.6);
  --accent: #D2A667;
  --accent-dim: rgba(210,166,103,0.7);
  --accent-glow: rgba(210,166,103,0.1);
  --accent-border: rgba(210,166,103,0.2);
  --serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --container: min(1120px, 90vw);
  --radius: 14px;
  --radius-sm: 10px;
  --radius-xs: 8px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; height: 100%; }

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  opacity: 1;
  transition: opacity 0.5s ease;
}
body.loading { opacity: 0; }

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
.container { width: var(--container); margin: 0 auto; }
.text-accent { color: var(--accent); }

/* ---- Grain overlay ---- */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.09;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='250' height='250'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='250' height='250' filter='url(%23n)' opacity='0.4'/%3E%3C/svg%3E");
  mix-blend-mode: overlay;
}

/* ========================================================
   Navigation
   ======================================================== */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(20px, 4vw, 48px);
  height: 60px;
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  background: rgba(11,11,15,0.7);
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.3px;
}

.nav-mark {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, #fff8ee, var(--accent));
  box-shadow: 0 0 10px var(--accent-glow), 0 0 4px rgba(210,166,103,0.25);
}

.nav-links {
  display: flex;
  gap: 32px;
}
.nav-links a {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-2);
  transition: color 0.25s;
  letter-spacing: 0.1px;
}
.nav-links a:hover { color: var(--text); }

.nav-cta {
  font-size: 13px;
  font-weight: 600;
  padding: 7px 18px;
  border-radius: 999px;
  border: 1px solid var(--accent-border);
  background: rgba(210,166,103,0.07);
  color: var(--accent);
  transition: all 0.25s;
  letter-spacing: 0.1px;
}
.nav-cta:hover {
  background: rgba(210,166,103,0.14);
  border-color: rgba(210,166,103,0.32);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--text-2);
  transition: all 0.3s;
}
.nav-toggle.active span:first-child { transform: rotate(45deg) translate(2.5px, 2.5px); }
.nav-toggle.active span:last-child  { transform: rotate(-45deg) translate(2.5px, -2.5px); }

/* Mobile menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 60px; left: 0; right: 0;
  z-index: 49;
  background: rgba(11,11,15,0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 24px clamp(20px, 4vw, 48px);
  flex-direction: column;
  gap: 16px;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-2);
  padding: 8px 0;
  transition: color 0.25s;
}
.mobile-menu a:hover { color: var(--text); }
.mobile-menu .nav-cta {
  display: inline-flex;
  align-self: flex-start;
  margin-top: 8px;
}

/* ========================================================
   Hero
   ======================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 700px 500px at 15% 45%, rgba(210,166,103,0.1), transparent),
    radial-gradient(ellipse 600px 700px at 85% 25%, rgba(210,166,103,0.05), transparent),
    radial-gradient(ellipse 900px 500px at 50% 110%, rgba(210,166,103,0.06), transparent);
  animation: heroGlow 18s ease-in-out infinite alternate;
}

@keyframes heroGlow {
  0%   { opacity: 1;    transform: scale(1); }
  100% { opacity: 0.55; transform: scale(1.12); }
}

.hero-inner {
  position: relative;
  z-index: 1;
  padding: 160px 0 120px;
  max-width: 740px;
}

.hero-kicker {
  display: inline-flex;
  padding: 5px 14px;
  border-radius: 999px;
  border: 1px solid var(--accent-border);
  background: rgba(210,166,103,0.06);
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.8px;
  text-transform: uppercase;
}

.hero-title {
  margin-top: 28px;
  font-family: var(--serif);
  font-size: clamp(38px, 5.5vw, 68px);
  font-weight: 400;
  line-height: 1.08;
  letter-spacing: -0.3px;
  color: var(--text);
}

.hero-sub {
  margin-top: 24px;
  font-size: 16px;
  line-height: 1.72;
  color: var(--text-2);
  max-width: 560px;
}

.hero-form {
  display: flex;
  gap: 8px;
  margin-top: 36px;
  max-width: 480px;
}
.hero-form input {
  flex: 1;
  min-width: 0;
  padding: 13px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  background: rgba(255,255,255,0.04);
  color: var(--text);
  font-family: var(--sans);
  font-size: 14px;
  outline: none;
  transition: border-color 0.25s, background 0.25s;
}
.hero-form input::placeholder { color: var(--text-3); }
.hero-form input:focus {
  border-color: var(--accent-border);
  background: rgba(255,255,255,0.05);
}
.hero-form button {
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--accent-border);
  background: linear-gradient(160deg, rgba(210,166,103,0.18), rgba(210,166,103,0.09));
  color: var(--accent);
  font-family: var(--sans);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.25s;
  box-shadow: 0 0 24px rgba(210,166,103,0.08);
}
.hero-form button:hover {
  background: linear-gradient(160deg, rgba(210,166,103,0.26), rgba(210,166,103,0.14));
  border-color: rgba(210,166,103,0.38);
  box-shadow: 0 0 32px rgba(210,166,103,0.14);
}
.hero-form button:disabled { opacity: 0.7; cursor: default; }

.hero-fine {
  margin-top: 14px;
  font-size: 12px;
  color: var(--text-3);
}

/* ========================================================
   Section common
   ======================================================== */
.section-head { margin-bottom: 52px; }
.section-head--center { text-align: center; }

.kicker {
  display: inline-block;
  color: var(--accent);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.section-title {
  margin-top: 14px;
  font-family: var(--serif);
  font-size: clamp(26px, 3.2vw, 42px);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.2px;
}

.section-sub {
  margin-top: 14px;
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.65;
  max-width: 56ch;
}

/* ========================================================
   Trust strip
   ======================================================== */
.trust-strip {
  padding: 44px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.trust-strip-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
}
.trust-item { text-align: center; }
.trust-value {
  display: block;
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.3px;
  color: var(--text);
}
.trust-label {
  display: block;
  margin-top: 4px;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-3);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.trust-divider {
  width: 1px;
  height: 32px;
  background: var(--border);
  flex-shrink: 0;
}

/* ========================================================
   Protocol (How it works) — scroll-hijack stepper
   ======================================================== */
.protocol {
  position: relative;
  height: 400vh;
  border-top: 1px solid var(--border);
  background:
    radial-gradient(ellipse 800px 500px at 50% 30%, rgba(210,166,103,0.05), transparent);
  scroll-margin-top: 60px;
}

/* Sticky panel */
.protocol-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
}

/* Inner flex column fills the sticky viewport */
.protocol-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding-top: calc(60px + 52px); /* nav + breathing room */
  padding-bottom: 44px;
}

/* Section header */
.protocol-header {
  flex-shrink: 0;
  margin-bottom: 36px;
}
.protocol-header .kicker { display: block; margin-bottom: 12px; }
.protocol-header .section-sub { margin-top: 10px; }

/* Main layout row: stepper | right column */
.protocol-layout {
  display: flex;
  gap: 44px;
  flex: 1;
  min-height: 0;
}

/* ---- Stepper (left column) ---- */
.protocol-stepper {
  width: 24px;
  flex-shrink: 0;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 5px 0;
}

.protocol-stepper-rail {
  position: absolute;
  top: 7px;
  bottom: 7px;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  background: var(--border-light);
}

.protocol-stepper-progress {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 0%;
  background: var(--accent);
  transition: height 0.65s cubic-bezier(0.16, 1, 0.3, 1);
}

.protocol-stepper-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  border: 1.5px solid var(--border-light);
  background: var(--bg);
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  transition: width 0.35s ease, height 0.35s ease,
              border-color 0.35s ease, background 0.35s ease,
              box-shadow 0.35s ease;
}

.protocol-stepper-dot.is-past {
  border-color: var(--accent-dim);
  background: var(--accent-dim);
}

.protocol-stepper-dot.is-active {
  width: 13px;
  height: 13px;
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 14px rgba(210,166,103,0.45), 0 0 4px rgba(210,166,103,0.3);
}

/* Slide container — direct flex child of protocol-layout */
.protocol-content-wrap {
  flex: 1;
  position: relative;
  overflow: hidden;
  min-height: 0;
}

.protocol-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateY(36px);
  transition:
    opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}
.protocol-slide.is-active {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.protocol-slide.is-above {
  opacity: 0;
  transform: translateY(-36px);
}

.protocol-num {
  font-size: 11px;
  font-weight: 600;
  color: var(--accent-dim);
  letter-spacing: 1.5px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.protocol-label {
  font-family: var(--serif);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 400;
  color: var(--text);
  margin-bottom: 18px;
}
.protocol-line {
  height: 1px;
  margin-bottom: 20px;
  background: linear-gradient(90deg, var(--accent-border), transparent);
  max-width: 280px;
}
.protocol-copy {
  color: var(--text-2);
  font-size: 15px;
  line-height: 1.72;
  max-width: 46ch;
}

/* ---- Heartbeat monitor — no background, inline SVG path morphing ---- */
.protocol-monitor {
  flex-shrink: 0;
  margin-top: 24px;
  height: 72px;
  position: relative;
  overflow: hidden;
}

.protocol-ecg-svg {
  position: absolute;
  top: 0; left: 0;
  /* Fixed pixel width = full path length so 1 SVG unit = 1 CSS px */
  width: 1800px;
  height: 100%;
}

.ecg-track {
  animation: ecgScroll 1.4s linear infinite;
}

@keyframes ecgScroll {
  from { transform: translateX(0px); }
  to   { transform: translateX(-200px); }
}

.ecg-path {
  fill: none;
  stroke: var(--accent);
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  filter: drop-shadow(0 0 4px rgba(210,166,103,0.35));
  /* Default: beating ECG waveform */
  d: path("M 0,30 L 70,30 74,22 78,38 84,30 88,25 92,2 96,58 100,30 108,36 120,30 200,30 270,30 274,22 278,38 284,30 288,25 292,2 296,58 300,30 308,36 320,30 400,30 470,30 474,22 478,38 484,30 488,25 492,2 496,58 500,30 508,36 520,30 600,30 670,30 674,22 678,38 684,30 688,25 692,2 696,58 700,30 708,36 720,30 800,30 870,30 874,22 878,38 884,30 888,25 892,2 896,58 900,30 908,36 920,30 1000,30 1070,30 1074,22 1078,38 1084,30 1088,25 1092,2 1096,58 1100,30 1108,36 1120,30 1200,30 1270,30 1274,22 1278,38 1284,30 1288,25 1292,2 1296,58 1300,30 1308,36 1320,30 1400,30 1470,30 1474,22 1478,38 1484,30 1488,25 1492,2 1496,58 1500,30 1508,36 1520,30 1600,30 1670,30 1674,22 1678,38 1684,30 1688,25 1692,2 1696,58 1700,30 1708,36 1720,30 1800,30");
  transition: d 1s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Flatline: same point structure, all y=30 — morphs smoothly */
.protocol-monitor.is-flatline .ecg-path {
  d: path("M 0,30 L 70,30 74,30 78,30 84,30 88,30 92,30 96,30 100,30 108,30 120,30 200,30 270,30 274,30 278,30 284,30 288,30 292,30 296,30 300,30 308,30 320,30 400,30 470,30 474,30 478,30 484,30 488,30 492,30 496,30 500,30 508,30 520,30 600,30 670,30 674,30 678,30 684,30 688,30 692,30 696,30 700,30 708,30 720,30 800,30 870,30 874,30 878,30 884,30 888,30 892,30 896,30 900,30 908,30 920,30 1000,30 1070,30 1074,30 1078,30 1084,30 1088,30 1092,30 1096,30 1100,30 1108,30 1120,30 1200,30 1270,30 1274,30 1278,30 1284,30 1288,30 1292,30 1296,30 1300,30 1308,30 1320,30 1400,30 1470,30 1474,30 1478,30 1484,30 1488,30 1492,30 1496,30 1500,30 1508,30 1520,30 1600,30 1670,30 1674,30 1678,30 1684,30 1688,30 1692,30 1696,30 1700,30 1708,30 1720,30 1800,30");
}

/* ========================================================
   Use cases
   ======================================================== */
.use-cases {
  padding: 120px 0;
  border-top: 1px solid var(--border);
  background:
    radial-gradient(ellipse 700px 500px at 80% 20%, rgba(210,166,103,0.04), transparent);
}
.use-cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.use-case-card {
  padding: 32px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  transition: border-color 0.35s, transform 0.35s;
}
.use-case-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
}
.use-case-icon {
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background: rgba(210,166,103,0.06);
  color: var(--accent);
  margin-bottom: 20px;
}
.use-case-label {
  font-family: var(--serif);
  font-size: 19px;
  font-weight: 400;
  margin-bottom: 12px;
}
.use-case-copy {
  font-size: 14px;
  line-height: 1.65;
  color: var(--text-2);
}

/* ========================================================
   Security
   ======================================================== */
.security {
  padding: 120px 0;
  border-top: 1px solid var(--border);
  background:
    radial-gradient(ellipse 700px 500px at 20% 0%, rgba(210,166,103,0.04), transparent),
    radial-gradient(ellipse 600px 500px at 80% 100%, rgba(210,166,103,0.03), transparent);
}
.security-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.security-card {
  display: flex;
  gap: 20px;
  padding: 28px 30px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  transition: border-color 0.35s, transform 0.35s;
}
.security-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
}
.security-icon {
  width: 40px; height: 40px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border);
  background: rgba(210,166,103,0.06);
  color: var(--accent);
}
.security-label {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text);
}
.security-copy {
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-2);
}

/* ========================================================
   Product preview / Mockup
   ======================================================== */
.preview {
  padding: 120px 0;
  border-top: 1px solid var(--border);
  background:
    radial-gradient(ellipse 900px 600px at 50% 110%, rgba(210,166,103,0.05), transparent);
}
.preview-sub {
  max-width: 42ch;
}
.section-head--center .section-sub {
  margin-left: auto;
  margin-right: auto;
}

.mockup {
  margin-top: 52px;
  border-radius: var(--radius);
  border: 1px solid var(--border-light);
  overflow: hidden;
  background: var(--card);
  box-shadow:
    0 0 0 1px rgba(255,255,255,0.02),
    0 32px 64px rgba(0,0,0,0.5),
    0 16px 32px rgba(0,0,0,0.3);
}

.mockup-chrome {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 16px;
  background: rgba(0,0,0,0.3);
  border-bottom: 1px solid var(--border);
}
.mockup-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  flex-shrink: 0;
}
.mockup-url {
  flex: 1;
  text-align: center;
  font-size: 11px;
  color: var(--text-3);
  background: rgba(255,255,255,0.04);
  padding: 4px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  max-width: 260px;
  margin: 0 auto;
}

.mockup-body {
  display: grid;
  grid-template-columns: 196px 1fr;
  min-height: 340px;
}

.mockup-sidebar {
  border-right: 1px solid var(--border);
  background: rgba(0,0,0,0.12);
}
.mockup-sidebar-title {
  padding: 16px 16px 10px;
  font-size: 10px;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.8px;
}
.mockup-msg {
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  cursor: default;
}
.mockup-msg.active {
  background: rgba(210,166,103,0.06);
  border-left: 2px solid var(--accent);
  padding-left: 14px;
}
.mockup-msg-name {
  display: block;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-2);
}
.mockup-msg.active .mockup-msg-name { color: var(--text); }
.mockup-msg-badge {
  display: inline-block;
  margin-top: 4px;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 4px;
  background: rgba(255,255,255,0.05);
  color: var(--text-3);
}

.mockup-detail { padding: 22px 24px; }
.mockup-detail-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
}
.mockup-detail-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}
.mockup-detail-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 10px;
  color: var(--accent);
  background: rgba(210,166,103,0.08);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--accent-border);
}

.mockup-field { margin-bottom: 10px; }
.mockup-fields-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}
.mockup-field-label {
  font-size: 10px;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-bottom: 5px;
}
.mockup-field-value {
  font-size: 12px;
  color: var(--text-2);
  padding: 7px 10px;
  background: rgba(255,255,255,0.03);
  border-radius: 6px;
  border: 1px solid var(--border);
}

.mockup-content {
  margin-top: 14px;
  padding: 14px;
  background: rgba(0,0,0,0.2);
  border-radius: 8px;
  border: 1px solid var(--border);
}
.mockup-content-blur {
  display: flex;
  flex-direction: column;
  gap: 8px;
  filter: blur(3px);
  opacity: 0.25;
}
.mockup-blur-line {
  display: block;
  height: 7px;
  background: var(--text-2);
  border-radius: 4px;
}
.mockup-content-lock {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 12px;
  font-size: 11px;
  color: var(--text-3);
}

/* ========================================================
   Pricing
   ======================================================== */
.pricing {
  padding: 120px 0;
  border-top: 1px solid var(--border);
  background:
    radial-gradient(ellipse 900px 600px at 50% 0%, rgba(210,166,103,0.06), transparent);
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  align-items: start;
}
.pricing-card {
  padding: 34px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--card);
  position: relative;
  transition: border-color 0.35s, transform 0.35s;
}
.pricing-card:hover {
  border-color: var(--border-light);
  transform: translateY(-2px);
}
.pricing-card.featured {
  border-color: var(--accent-border);
  background: linear-gradient(180deg, rgba(210,166,103,0.06), rgba(210,166,103,0.02));
}

.pricing-badge {
  position: absolute;
  top: -11px; left: 50%;
  transform: translateX(-50%);
  padding: 4px 14px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--bg);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.3px;
  white-space: nowrap;
}
.pricing-tier {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-2);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}
.pricing-amount {
  margin-top: 14px;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.pricing-currency {
  font-family: var(--sans);
  font-size: 18px;
  font-weight: 500;
  color: var(--text-2);
}
.pricing-value {
  font-family: var(--sans);
  font-size: 52px;
  font-weight: 600;
  line-height: 1;
  letter-spacing: -2px;
}
.pricing-period {
  font-size: 13px;
  color: var(--text-3);
  margin-left: 4px;
}
.pricing-desc {
  margin-top: 6px;
  font-size: 12px;
  color: var(--text-3);
}
.pricing-line {
  height: 1px;
  margin: 22px 0;
  background: linear-gradient(90deg, var(--border-light), transparent);
}
.pricing-features {
  display: flex;
  flex-direction: column;
  gap: 11px;
}
.pricing-features li {
  font-size: 13px;
  color: var(--text-2);
  padding-left: 18px;
  position: relative;
}
.pricing-features li::before {
  content: '';
  position: absolute;
  left: 0; top: 6px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent-dim);
}
.pricing-btn {
  display: block;
  text-align: center;
  margin-top: 24px;
  padding: 13px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  background: rgba(255,255,255,0.03);
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
  transition: all 0.25s;
}
.pricing-btn:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.18);
}
.pricing-btn.featured {
  border-color: var(--accent-border);
  background: linear-gradient(160deg, rgba(210,166,103,0.18), rgba(210,166,103,0.09));
  color: var(--accent);
  box-shadow: 0 0 20px rgba(210,166,103,0.08);
}
.pricing-btn.featured:hover {
  background: linear-gradient(160deg, rgba(210,166,103,0.26), rgba(210,166,103,0.14));
  box-shadow: 0 0 28px rgba(210,166,103,0.14);
}

/* ========================================================
   FAQ
   ======================================================== */
.faq {
  padding: 120px 0;
  border-top: 1px solid var(--border);
}
.faq-list {
  max-width: 680px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
}
.faq-item { border-bottom: 1px solid var(--border); }
.faq-q {
  width: 100%;
  padding: 22px 0;
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--text);
  background: none;
  border: none;
  text-align: left;
  transition: color 0.25s;
}
.faq-q::after {
  content: '+';
  font-size: 20px;
  font-weight: 300;
  color: var(--text-3);
  flex-shrink: 0;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), color 0.25s;
}
.faq-item.open .faq-q::after {
  content: '\2212';
  color: var(--accent);
  transform: rotate(180deg);
}
.faq-q:hover { color: var(--accent); }
.faq-a {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}
.faq-item.open .faq-a { grid-template-rows: 1fr; }
.faq-a-inner { overflow: hidden; }
.faq-a p {
  padding-bottom: 22px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-2);
}

/* ========================================================
   Final CTA
   ======================================================== */
.final-cta {
  padding: 120px 0;
  border-top: 1px solid var(--border);
  text-align: center;
  background:
    radial-gradient(ellipse 800px 500px at 50% 110%, rgba(210,166,103,0.07), transparent);
}
.final-title {
  font-family: var(--serif);
  font-size: clamp(30px, 3.8vw, 50px);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.2px;
}
.final-sub {
  margin-top: 18px;
  font-size: 15px;
  color: var(--text-2);
}
.final-cta .hero-form {
  margin: 32px auto 0;
  justify-content: center;
}
.final-cta .hero-fine { text-align: center; }

/* ========================================================
   Sticky CTA
   ======================================================== */
.sticky-cta {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 40;
  padding: 12px 0;
  background: rgba(11,11,15,0.88);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-top: 1px solid var(--border);
  transform: translateY(100%);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
  pointer-events: none;
}
.sticky-cta.visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.sticky-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.sticky-cta-text {
  font-size: 13px;
  color: var(--text-2);
}

/* ========================================================
   Footer
   ======================================================== */
.footer {
  border-top: 1px solid var(--border);
  padding: 52px 0 44px;
}
.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-left {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 14px;
  color: var(--text-2);
}
.footer-tagline {
  font-size: 13px;
  color: var(--text-3);
  font-style: italic;
}
.footer-links { display: flex; gap: 22px; }
.footer-links a {
  font-size: 13px;
  color: var(--text-3);
  transition: color 0.25s;
}
.footer-links a:hover { color: var(--text); }
.footer-copy { font-size: 12px; color: var(--text-3); }

/* ========================================================
   Scroll reveal
   ======================================================== */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity 0.75s cubic-bezier(0.16, 1, 0.3, 1),
    transform 0.75s cubic-bezier(0.16, 1, 0.3, 1);
}
.reveal.revealed { opacity: 1; transform: translateY(0); }
.reveal[data-delay="1"] { transition-delay: 0.08s; }
.reveal[data-delay="2"] { transition-delay: 0.16s; }
.reveal[data-delay="3"] { transition-delay: 0.24s; }
.reveal[data-delay="4"] { transition-delay: 0.32s; }

/* ========================================================
   Responsive
   ======================================================== */
@media (max-width: 960px) {
  /* Protocol: disable scroll hijack, stack vertically */
  .protocol           { height: auto; padding: 80px 0; }
  .protocol-sticky    { position: static; height: auto; overflow: visible; }
  .protocol-inner     { height: auto; padding-top: 0; padding-bottom: 0; }
  .protocol-header    { margin-bottom: 28px; }
  .protocol-layout    { flex-direction: column; gap: 24px; }
  .protocol-stepper   { display: none; }
  .protocol-content-wrap { position: static; overflow: visible; height: auto; }
  .protocol-slide     {
    position: static; opacity: 1; transform: none;
    pointer-events: auto; margin-bottom: 28px;
  }
  .protocol-slide.is-above { transform: none; opacity: 1; }
  .protocol-monitor   { margin-top: 8px; }

  .use-cases-grid     { grid-template-columns: 1fr; }
  .security-grid      { grid-template-columns: 1fr; }
  .pricing-grid       { grid-template-columns: 1fr; max-width: 400px; }
  .nav-links          { display: none; }
  .nav > .nav-cta     { display: none; }
  .nav-toggle         { display: flex; }
  .trust-strip-inner  { flex-wrap: wrap; gap: 24px; justify-content: center; }
  .trust-divider      { display: none; }
  .mockup-body        { grid-template-columns: 1fr; }
  .mockup-sidebar     { display: none; }
  .mockup-fields-row  { grid-template-columns: 1fr; }
}

@media (max-width: 600px) {
  .hero-inner         { padding: 120px 0 80px; }
  .hero-form          { flex-direction: column; }
  .hero-form button   { width: 100%; }
  .trust-strip        { padding: 32px 0; }
  .trust-strip-inner  { gap: 20px; }
  .trust-item         { flex: 0 0 calc(50% - 12px); }
  .use-cases,
  .security,
  .preview,
  .pricing,
  .faq,
  .final-cta          { padding: 80px 0; }
  .section-head       { margin-bottom: 36px; }
  .use-case-card      { padding: 24px; }
  .security-card      { padding: 20px; }
  .footer-inner       { flex-direction: column; align-items: flex-start; }
  .sticky-cta-text    { display: none; }
  .sticky-cta-inner   { justify-content: center; }
}