/* ==========================================================================
   AntEk Launcher — landing page (Zerith Studio Official)
   Dark, product-grade theme. Accent #4ade80 matches the launcher default.
   Built to read as trustworthy: calm surfaces, honest hierarchy, no noise.
   ========================================================================== */

:root {
  --bg: #080a0e;
  --bg-2: #0b0e14;
  --surface: #0f131b;
  --surface-2: #141a25;
  --surface-3: #1a2230;
  --line: #1a2130;
  --line-2: #28313f;
  --text: #eef1f6;
  --text-2: #c6ccd8;
  --muted: #97a1b3;
  --muted-2: #6b7488;
  --accent: #4ade80;
  --accent-2: #22c55e;
  --accent-3: #34d399;
  --accent-soft: rgba(74, 222, 128, .12);
  --cyan: #38bdf8;
  --danger: #f87171;
  --accent-ink: #04210f;

  --radius-lg: 22px;
  --radius: 16px;
  --radius-sm: 11px;

  --shadow-lg: 0 34px 90px -46px rgba(0, 0, 0, .96);
  --shadow-sm: 0 18px 40px -30px rgba(0, 0, 0, .85);

  --font: "Segoe UI Variable Text", "Segoe UI", Inter, system-ui, -apple-system,
          Roboto, Helvetica, Arial, sans-serif;
  --mono: "Cascadia Code", "JetBrains Mono", ui-monospace, SFMono-Regular, Consolas, monospace;

  --maxw: 1140px;
  --section: clamp(72px, 8.5vw, 116px);
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Layered page background: soft colour blooms + a masked technical grid. */
body::before {
  content: "";
  position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(58% 46% at 82% -8%, rgba(74, 222, 128, .10), transparent 62%),
    radial-gradient(46% 42% at 8% -4%, rgba(56, 189, 248, .075), transparent 62%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 42%, var(--bg) 100%);
}
body::after {
  content: "";
  position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, .022) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, .022) 1px, transparent 1px);
  background-size: 62px 62px;
  -webkit-mask-image: radial-gradient(ellipse 78% 58% at 50% -4%, #000 18%, transparent 74%);
  mask-image: radial-gradient(ellipse 78% 58% at 50% -4%, #000 18%, transparent 74%);
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 { line-height: 1.15; letter-spacing: -0.022em; font-weight: 700; margin: 0; }
p { margin: 0; }

code {
  font-family: var(--mono);
  font-size: 0.86em;
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.1em 0.42em;
  color: var(--text-2);
}

::selection { background: rgba(74, 222, 128, .28); color: #fff; }

.container { width: 100%; max-width: var(--maxw); margin-inline: auto; padding-inline: 24px; }
.container.narrow { max-width: 800px; }

.skip-link {
  position: absolute; left: 16px; top: -70px; z-index: 200;
  background: var(--accent); color: var(--accent-ink);
  padding: 10px 16px; border-radius: 8px; font-weight: 600;
  transition: top .2s ease;
}
.skip-link:focus { top: 16px; }

:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 6px; }

/* --- Scroll progress ------------------------------------------------------ */
.scroll-progress {
  position: fixed; top: 0; left: 0; z-index: 120;
  height: 2px; width: 0%;
  background: linear-gradient(90deg, var(--accent-2), var(--accent), var(--cyan));
  box-shadow: 0 0 12px rgba(74, 222, 128, .55);
  transition: width .1s linear;
}

/* --- Header --------------------------------------------------------------- */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  background: rgba(8, 10, 14, .55);
  backdrop-filter: blur(16px) saturate(1.3);
  -webkit-backdrop-filter: blur(16px) saturate(1.3);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, background .25s ease;
}
.site-header.scrolled {
  background: rgba(8, 10, 14, .86);
  border-bottom-color: var(--line);
}
.nav { display: flex; align-items: center; gap: 28px; height: 70px; }

.brand { display: flex; align-items: center; gap: 11px; }
.brand-mark { border-radius: 8px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.12; }
.brand-name { font-weight: 700; letter-spacing: -0.01em; }
.brand-studio { font-size: 11.5px; color: var(--muted-2); letter-spacing: .01em; }

.nav-links { display: flex; gap: 26px; margin-left: auto; }
.nav-links a {
  position: relative; color: var(--muted); font-size: 14.5px; font-weight: 500;
  transition: color .18s ease;
}
.nav-links a::after {
  content: ""; position: absolute; left: 0; right: 100%; bottom: -6px; height: 2px;
  border-radius: 2px; background: var(--accent);
  transition: right .22s ease;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after,
.nav-links a.active::after { right: 0; }
.nav-links a.active { color: var(--text); }
.nav > .btn { margin-left: 4px; }

/* --- Buttons -------------------------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  font-family: inherit; font-weight: 600; font-size: 15px;
  border-radius: var(--radius-sm); border: 1px solid transparent;
  padding: 11px 20px; cursor: pointer; white-space: nowrap;
  transition: transform .16s ease, background .18s ease, border-color .18s ease, box-shadow .18s ease, color .18s ease;
}
.btn .icon { width: 18px; height: 18px; flex: none; }
.btn-sm { padding: 8px 15px; font-size: 14px; }
.btn-lg { padding: 14px 26px; font-size: 16px; }
.btn-block { width: 100%; }

.btn-primary {
  background: linear-gradient(180deg, var(--accent) 0%, var(--accent-2) 100%);
  color: var(--accent-ink);
  box-shadow: 0 12px 28px -14px rgba(34, 197, 94, .85), inset 0 1px 0 rgba(255, 255, 255, .38);
}
.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 36px -16px rgba(34, 197, 94, .95), inset 0 1px 0 rgba(255, 255, 255, .42);
}
.btn-primary:active { transform: translateY(0); }

.btn-ghost {
  background: rgba(255, 255, 255, .03);
  border-color: var(--line-2);
  color: var(--text);
}
.btn-ghost:hover { background: rgba(255, 255, 255, .06); border-color: #3a4557; transform: translateY(-1px); }

/* --- Hero ----------------------------------------------------------------- */
.hero { position: relative; padding: 152px 0 76px; overflow: hidden; }
.hero-aurora {
  position: absolute; inset: -30% -10% auto -20%; height: 720px; pointer-events: none;
  background:
    radial-gradient(42% 55% at 26% 34%, rgba(74, 222, 128, .17), transparent 72%),
    radial-gradient(38% 48% at 74% 6%, rgba(56, 189, 248, .12), transparent 72%),
    radial-gradient(30% 40% at 52% 66%, rgba(52, 211, 153, .09), transparent 72%);
  filter: blur(14px);
  animation: aurora 20s ease-in-out infinite alternate;
}
@keyframes aurora {
  from { transform: translate3d(-1.5%, -1%, 0) scale(1); }
  to   { transform: translate3d(2%, 1.5%, 0) scale(1.05); }
}
.hero-grid {
  position: relative;
  display: grid; grid-template-columns: 1.02fr 1fr; gap: 62px; align-items: center;
}

.pill {
  display: inline-flex; align-items: center; gap: 9px;
  font-size: 13px; font-weight: 500; color: var(--muted);
  background: linear-gradient(180deg, rgba(255,255,255,.045), rgba(255,255,255,.015));
  border: 1px solid var(--line-2);
  padding: 7px 15px; border-radius: 999px; margin-bottom: 26px;
}
.pill-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent); box-shadow: 0 0 0 4px rgba(74, 222, 128, .16);
  animation: pulse 2.6s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(74, 222, 128, .14); }
  50%      { box-shadow: 0 0 0 7px rgba(74, 222, 128, .04); }
}
.pill-sep { width: 1px; height: 12px; background: var(--line-2); }

.hero h1 { font-size: clamp(2.5rem, 5.4vw, 4.05rem); margin-bottom: 22px; letter-spacing: -0.03em; }
.grad {
  background: linear-gradient(100deg, #4ade80 0%, #34d399 45%, #22d3ee 110%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { font-size: 18px; color: var(--muted); max-width: 34em; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-bottom: 26px; }

.trust-chips {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 10px 22px;
}
.trust-chips li {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13.5px; color: var(--muted-2);
}
.trust-chips svg {
  width: 17px; height: 17px; flex: none; color: var(--accent);
  fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round;
}

/* Windows-style window frame used for screenshots */
.hero-shot { position: relative; }
.hero-shot::after {
  content: ""; position: absolute; inset: 10% 8% -8% 8%;
  background: radial-gradient(58% 58% at 50% 50%, rgba(74, 222, 128, .2), transparent 72%);
  filter: blur(52px); z-index: -1;
}
.window-frame {
  border: 1px solid var(--line-2);
  border-radius: 14px; overflow: hidden;
  background: var(--surface);
  box-shadow: var(--shadow-lg), inset 0 1px 0 rgba(255, 255, 255, .05);
}
.window-bar {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 10px 12px 10px 14px; background: var(--surface-2); border-bottom: 1px solid var(--line);
}
.win-brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; color: var(--muted); font-weight: 500;
}
.win-brand img { border-radius: 4px; }
.win-controls { display: inline-flex; align-items: center; gap: 4px; }
.win-controls svg {
  width: 26px; height: 22px; padding: 5px; border-radius: 6px;
  fill: none; stroke: var(--muted-2); stroke-width: 1.35; stroke-linecap: round;
  transition: background .16s ease, stroke .16s ease;
}
.win-controls svg:last-child:hover { background: rgba(248, 113, 113, .16); stroke: var(--danger); }
.win-controls svg:not(:last-child):hover { background: rgba(255, 255, 255, .06); stroke: var(--text-2); }
.window-frame img { width: 100%; height: auto; }

/* Floating trust badge over the hero shot */
.hero-badge {
  position: absolute; left: -18px; bottom: 26px; z-index: 3;
  display: flex; align-items: center; gap: 11px;
  padding: 11px 16px 11px 12px; border-radius: 14px;
  background: rgba(15, 19, 27, .82);
  border: 1px solid var(--line-2);
  box-shadow: var(--shadow-sm), inset 0 1px 0 rgba(255, 255, 255, .05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.hero-badge-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 34px; height: 34px; border-radius: 10px; flex: none;
  background: var(--accent-soft); border: 1px solid rgba(74, 222, 128, .28);
}
.hero-badge-icon svg {
  width: 19px; height: 19px; color: var(--accent);
  fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; stroke-linejoin: round;
}
.hero-badge span:last-child { display: flex; flex-direction: column; line-height: 1.2; font-size: 12px; color: var(--muted-2); }
.hero-badge strong { font-size: 14px; color: var(--text); font-weight: 650; }

/* --- Stats ---------------------------------------------------------------- */
.stats { border-block: 1px solid var(--line); background: rgba(11, 14, 20, .5); }
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); }
.stat { padding: 34px 24px; text-align: center; border-left: 1px solid var(--line); }
.stat:first-child { border-left: 0; }
.stat strong {
  display: block; font-size: 32px; font-weight: 700; letter-spacing: -0.03em;
  background: linear-gradient(180deg, #fff, #a9b4c6);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.stat span { font-size: 13.5px; color: var(--muted-2); }

/* --- Sections ------------------------------------------------------------- */
.section { padding: var(--section) 0; }
.section-alt { background: linear-gradient(180deg, rgba(11, 14, 20, .65), rgba(11, 14, 20, .3)); border-block: 1px solid var(--line); }
.section-head { max-width: 46em; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12.5px; font-weight: 600; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); margin-bottom: 14px;
}
.eyebrow-icon {
  width: 15px; height: 15px; fill: none; stroke: currentColor;
  stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round;
}
.section h2 { font-size: clamp(1.75rem, 3.3vw, 2.5rem); }
.section-lead { color: var(--muted); font-size: 17px; max-width: 46em; margin-top: 15px; }
.feature-grid, .privacy-grid, .gallery, .eng-grid, .steps, .download-card { margin-top: 50px; }

/* --- Features ------------------------------------------------------------- */
.feature-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; }
.card {
  position: relative;
  --mx: 50%; --my: 50%;
  background: linear-gradient(180deg, rgba(20, 26, 37, .7), rgba(15, 19, 27, .75));
  border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px 22px;
  transition: border-color .22s ease, transform .22s ease, background .22s ease, box-shadow .22s ease;
}
/* Cursor spotlight, driven by --mx/--my from the pointer. */
.card::after {
  content: ""; position: absolute; inset: 0; border-radius: inherit; z-index: 0; pointer-events: none;
  background: radial-gradient(240px circle at var(--mx) var(--my), rgba(74, 222, 128, .13), transparent 62%);
  opacity: 0; transition: opacity .25s ease;
}
.card:hover::after { opacity: 1; }
.card > * { position: relative; z-index: 1; }
/* Gradient hairline that fades in on hover. */
.card::before {
  content: ""; position: absolute; inset: 0; border-radius: inherit; padding: 1px;
  background: linear-gradient(160deg, rgba(74, 222, 128, .55), rgba(56, 189, 248, .22) 60%, transparent);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude;
  opacity: 0; transition: opacity .25s ease; pointer-events: none;
}
.card:hover { transform: translateY(-4px); box-shadow: var(--shadow-sm); }
.card:hover::before { opacity: 1; }
.card-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 12px; margin-bottom: 18px;
  background: var(--accent-soft); border: 1px solid rgba(74, 222, 128, .22); color: var(--accent);
}
.card-icon svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.card h3 { font-size: 16.5px; margin-bottom: 9px; }
.card p { font-size: 14.5px; color: var(--muted); }

/* --- Getting started ------------------------------------------------------ */
.steps { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.steps li {
  position: relative; padding: 26px 24px;
  border: 1px solid var(--line); border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(20, 26, 37, .6), rgba(15, 19, 27, .72));
  transition: border-color .22s ease, transform .22s ease;
}
.steps li:hover { border-color: var(--line-2); transform: translateY(-3px); }
.step-num {
  display: inline-flex; align-items: center; justify-content: center;
  width: 36px; height: 36px; border-radius: 11px; margin-bottom: 16px;
  font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--accent);
  background: var(--accent-soft); border: 1px solid rgba(74, 222, 128, .24);
}
.steps h3 { font-size: 16.5px; margin-bottom: 8px; }
.steps p { font-size: 14.5px; color: var(--muted); }

/* --- Privacy & safety ----------------------------------------------------- */
.privacy-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.panel {
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 28px 26px;
}
.panel-do { border-top: 2px solid rgba(74, 222, 128, .5); }
.panel-dont { border-top: 2px solid rgba(148, 160, 180, .28); }
.panel-head { display: flex; align-items: center; gap: 13px; margin-bottom: 20px; }
.panel-head h3 { font-size: 17.5px; }
.panel-icon {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  width: 38px; height: 38px; border-radius: 11px;
}
.panel-icon svg { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; }
.panel-icon-do { background: var(--accent-soft); border: 1px solid rgba(74, 222, 128, .3); color: var(--accent); }
.panel-icon-dont { background: rgba(148, 160, 180, .1); border: 1px solid rgba(148, 160, 180, .26); color: var(--muted); }
.panel-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 13px; }
.panel-list li { position: relative; padding-left: 30px; font-size: 15px; color: var(--text-2); }
.panel-list li::before {
  content: ""; position: absolute; left: 0; top: 3px; width: 18px; height: 18px;
  border-radius: 6px; background: rgba(255, 255, 255, .03); border: 1px solid var(--line-2);
}
.panel-list li::after {
  content: ""; position: absolute; left: 6px; top: 8px;
  width: 4px; height: 8px; border: solid var(--accent); border-width: 0 2px 2px 0;
  transform: rotate(42deg);
}
.panel-dont .panel-list li::after {
  left: 5px; top: 7px; width: 8px; height: 8px;
  border: 0; border-radius: 0;
  background:
    linear-gradient(45deg, transparent 42%, var(--muted-2) 42% 58%, transparent 58%),
    linear-gradient(-45deg, transparent 42%, var(--muted-2) 42% 58%, transparent 58%);
  transform: none;
}

.verify {
  display: flex; align-items: center; gap: 22px;
  margin-top: 18px; padding: 24px 26px;
  border: 1px solid var(--line-2); border-radius: var(--radius);
  background:
    radial-gradient(120% 180% at 0% 0%, rgba(74, 222, 128, .09), transparent 55%),
    var(--surface-2);
}
.verify-icon {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  width: 48px; height: 48px; border-radius: 13px;
  background: var(--accent-soft); border: 1px solid rgba(74, 222, 128, .3); color: var(--accent);
}
.verify-icon svg { width: 25px; height: 25px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
.verify-copy { flex: 1; min-width: 0; }
.verify-copy h3 { font-size: 17px; margin-bottom: 5px; }
.verify-copy p { font-size: 14.5px; color: var(--muted); }
.verify > .btn { flex: none; }

/* --- Screenshot gallery --------------------------------------------------- */
.gallery { display: grid; grid-template-columns: 1.7fr 1fr; gap: 24px; align-items: start; }
.gallery-stage { margin: 0; }
.gallery-frame { display: flex; flex-direction: column; height: 100%; }
.gallery-zoom {
  position: relative; display: block; width: 100%; padding: 0; margin: 0;
  border: 0; background: none; cursor: zoom-in; line-height: 0;
}
.gallery-zoom img { width: 100%; height: auto; transition: transform .5s cubic-bezier(.2, .7, .2, 1); }
.gallery-frame:hover .gallery-zoom img { transform: scale(1.012); }
.gallery-zoom-hint {
  position: absolute; right: 12px; bottom: 12px;
  display: inline-flex; align-items: center; gap: 7px;
  padding: 7px 12px; border-radius: 9px;
  font-size: 12.5px; font-weight: 500; color: var(--text);
  background: rgba(8, 10, 14, .78); border: 1px solid var(--line-2);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  opacity: 0; transform: translateY(4px); transition: opacity .2s ease, transform .2s ease;
}
.gallery-zoom-hint svg { width: 15px; height: 15px; fill: none; stroke: currentColor; stroke-width: 1.7; stroke-linecap: round; }
.gallery-frame:hover .gallery-zoom-hint { opacity: 1; transform: none; }
.gallery-cap { margin-top: 14px; font-size: 13.5px; color: var(--muted-2); }

.gallery-rail { display: flex; flex-direction: column; gap: 12px; }
.gallery-tab {
  display: grid; grid-template-columns: 92px 1fr; align-items: center; gap: 14px;
  padding: 8px; text-align: left; cursor: pointer;
  font-family: inherit; font-size: 14.5px; font-weight: 600; color: var(--muted);
  background: var(--surface); border: 1px solid var(--line); border-radius: 13px;
  transition: border-color .2s ease, background .2s ease, color .2s ease, transform .2s ease;
}
.gallery-tab img {
  width: 92px; height: 58px; object-fit: cover; object-position: top left;
  border-radius: 8px; border: 1px solid var(--line);
}
.gallery-tab:hover { border-color: var(--line-2); color: var(--text-2); transform: translateX(2px); }
.gallery-tab.is-active {
  border-color: rgba(74, 222, 128, .5); color: var(--text);
  background: linear-gradient(180deg, rgba(74, 222, 128, .09), rgba(74, 222, 128, .02));
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .05);
}

/* --- Engineering ---------------------------------------------------------- */
.eng-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.eng-item { padding-top: 22px; border-top: 2px solid var(--line-2); transition: border-color .25s ease; }
.eng-item:hover { border-top-color: rgba(74, 222, 128, .55); }
.eng-num {
  display: block; font-family: var(--mono); font-size: 12.5px; font-weight: 600;
  color: var(--accent); letter-spacing: .08em; margin-bottom: 12px;
}
.eng-item h3 { font-size: 16.5px; margin-bottom: 9px; }
.eng-item p { font-size: 14.5px; color: var(--muted); }

/* --- Download ------------------------------------------------------------- */
.download-card {
  display: grid; grid-template-columns: 1.45fr 1fr; gap: 40px; align-items: center;
  background:
    radial-gradient(120% 160% at 100% 0%, rgba(74, 222, 128, .11), transparent 55%),
    linear-gradient(180deg, var(--surface-2), var(--surface));
  border: 1px solid var(--line-2); border-radius: var(--radius-lg);
  padding: 46px; box-shadow: var(--shadow-lg);
}
.download-copy h2 { font-size: clamp(1.75rem, 3vw, 2.3rem); margin-bottom: 14px; }
.download-copy > p { color: var(--muted); font-size: 16px; }
.checklist { list-style: none; padding: 0; margin: 22px 0 0; display: grid; gap: 12px; }
.checklist li { position: relative; padding-left: 30px; font-size: 15px; color: var(--text-2); }
.checklist li::before {
  content: ""; position: absolute; left: 0; top: 7px; width: 17px; height: 17px;
  border-radius: 5px; background: var(--accent-soft); border: 1px solid rgba(74, 222, 128, .35);
}
.checklist li::after {
  content: ""; position: absolute; left: 5.5px; top: 11px;
  width: 4px; height: 8px; border: solid var(--accent); border-width: 0 2px 2px 0;
  transform: rotate(42deg);
}
.download-action { text-align: center; }
.download-meta { margin-top: 13px; font-size: 13px; color: var(--muted-2); }
.download-link {
  display: inline-block; margin-top: 12px; font-size: 13.5px; font-weight: 500;
  color: var(--muted); transition: color .18s ease;
}
.download-link:hover { color: var(--accent); }

.verify-dl { margin-top: 16px; text-align: left; }
.verify-dl summary {
  cursor: pointer; list-style: none;
  display: inline-flex; align-items: center; gap: 7px;
  font-size: 13.5px; font-weight: 600; color: var(--muted);
  transition: color .18s ease;
}
.verify-dl summary::-webkit-details-marker { display: none; }
.verify-dl summary::before { content: "ⓘ"; font-size: 15px; line-height: 1; color: var(--accent); }
.verify-dl summary:hover { color: var(--accent); }
.verify-dl p { margin-top: 9px; font-size: 13px; color: var(--muted-2); line-height: 1.55; }
.verify-dl code { font-size: 12px; }

/* --- FAQ ------------------------------------------------------------------ */
.faq { margin-top: 40px; display: grid; gap: 12px; }
.faq details {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm);
  padding: 4px 20px; transition: border-color .2s ease, background .2s ease;
}
.faq details:hover { border-color: var(--line-2); }
.faq details[open] { border-color: rgba(74, 222, 128, .34); background: var(--surface-2); }
.faq summary {
  cursor: pointer; list-style: none; padding: 15px 0; font-weight: 600; font-size: 15.5px;
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+"; font-size: 20px; line-height: 1; color: var(--accent); font-weight: 400;
  flex: none; transition: transform .2s ease;
}
.faq details[open] summary::after { content: "–"; }
.faq details p { padding-bottom: 18px; color: var(--muted); font-size: 15px; }
.faq details p a { color: var(--accent); text-decoration: underline; text-underline-offset: 3px; }

/* --- Support band --------------------------------------------------------- */
.support-band {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(11, 14, 20, .35), rgba(11, 14, 20, .85));
}
.support-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 28px;
  padding-block: 42px;
}
.support-copy h3 { font-size: 18px; margin-bottom: 6px; }
.support-copy p { font-size: 14.5px; color: var(--muted); max-width: 54em; }
.support-actions { display: flex; gap: 12px; flex: none; }

/* --- Footer --------------------------------------------------------------- */
.site-footer { border-top: 1px solid var(--line); background: var(--bg-2); padding: 66px 0 40px; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 32px; }
.footer-brand p { margin-top: 16px; color: var(--muted-2); font-size: 14px; max-width: 32em; }
.footer-col { display: flex; flex-direction: column; gap: 11px; }
.footer-col h4 { font-size: 12.5px; text-transform: uppercase; letter-spacing: .12em; color: var(--muted-2); margin: 0 0 4px; font-weight: 600; }
.footer-col a { color: var(--muted); font-size: 14.5px; transition: color .18s ease; }
.footer-col a:hover { color: var(--accent); }
.footer-legal {
  margin-top: 52px; padding-top: 26px; border-top: 1px solid var(--line);
  display: flex; flex-direction: column; gap: 8px;
}
.footer-legal p { font-size: 13px; color: var(--muted-2); }
.footer-legal .disclaimer { max-width: 62em; }

/* --- Lightbox ------------------------------------------------------------- */
.lightbox {
  position: fixed; inset: 0; z-index: 200;
  display: flex; align-items: center; justify-content: center;
  padding: 5vh 5vw;
  background: rgba(4, 6, 9, .86);
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
  opacity: 0; transition: opacity .22s ease;
}
.lightbox[hidden] { display: none; }
.lightbox.open { opacity: 1; }
.lightbox-img {
  max-width: 100%; max-height: 90vh; width: auto; height: auto;
  border-radius: 12px; border: 1px solid var(--line-2);
  box-shadow: 0 40px 100px -40px rgba(0, 0, 0, .9);
  transform: scale(.98); transition: transform .22s ease;
}
.lightbox.open .lightbox-img { transform: none; }
.lightbox-btn {
  position: absolute; display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border-radius: 50%; cursor: pointer;
  background: rgba(20, 26, 37, .8); border: 1px solid var(--line-2); color: var(--text);
  transition: background .18s ease, border-color .18s ease, transform .18s ease;
}
.lightbox-btn svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.lightbox-btn:hover { background: var(--surface-3); border-color: #3a4557; }
.lightbox-close { top: 22px; right: 22px; }
.lightbox-prev { left: 22px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 22px; top: 50%; transform: translateY(-50%); }
.lightbox-prev:hover { transform: translateY(-50%) scale(1.06); }
.lightbox-next:hover { transform: translateY(-50%) scale(1.06); }

/* --- Reveal animation ----------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
.reveal.in { opacity: 1; transform: none; }
.feature-grid .reveal:nth-child(2), .eng-grid .reveal:nth-child(2) { transition-delay: .05s; }
.feature-grid .reveal:nth-child(3), .eng-grid .reveal:nth-child(3) { transition-delay: .1s; }
.feature-grid .reveal:nth-child(4), .eng-grid .reveal:nth-child(4) { transition-delay: .15s; }
.feature-grid .reveal:nth-child(5) { transition-delay: .05s; }
.feature-grid .reveal:nth-child(6) { transition-delay: .1s; }
.feature-grid .reveal:nth-child(7) { transition-delay: .15s; }
.feature-grid .reveal:nth-child(8) { transition-delay: .2s; }

/* --- Responsive ----------------------------------------------------------- */
@media (max-width: 1040px) {
  .gallery { grid-template-columns: 1fr; }
  .gallery-rail { flex-direction: row; flex-wrap: wrap; }
  .gallery-tab { flex: 1 1 200px; grid-template-columns: 72px 1fr; }
  .gallery-tab img { width: 72px; height: 46px; }
}
@media (max-width: 960px) {
  .hero-grid { grid-template-columns: 1fr; gap: 48px; }
  .hero { padding-top: 124px; }
  .hero-badge { left: auto; right: 16px; bottom: -18px; }
  .feature-grid { grid-template-columns: repeat(2, 1fr); }
  .eng-grid { grid-template-columns: repeat(2, 1fr); }
  .download-card { grid-template-columns: 1fr; gap: 30px; padding: 34px; }
  .download-action { text-align: left; }
  .verify { flex-direction: column; align-items: flex-start; gap: 16px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 720px) {
  .nav-links { display: none; }
  .nav { gap: 16px; }
  .nav > .btn { margin-left: auto; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
  .stat { padding: 26px 16px; }
  .stat:nth-child(3) { border-left: 0; }
  .stat:nth-child(n+3) { border-top: 1px solid var(--line); }
  .privacy-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .steps { grid-template-columns: 1fr; }
  .support-inner { flex-direction: column; align-items: flex-start; gap: 18px; }
  .footer-grid { grid-template-columns: 1fr; gap: 26px; }
  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }
  .lightbox-close { top: 12px; right: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn, .card, .shot img, .gallery-zoom img, .gallery-tab { transition: none; }
  .hero-aurora { animation: none; }
  .pill-dot { animation: none; }
  .scroll-progress { transition: none; }
}