/* ==========================================================================
   VortexThemes Main Stylesheet — Dark Tech Theme / Full-Width Responsive
   ========================================================================== */

/* ---------- Design Variables ---------- */
:root {
  --vtx-bg: #0a0e1a;
  --vtx-bg-alt: #0f1526;
  --vtx-surface: rgba(255, 255, 255, 0.04);
  --vtx-surface-hover: rgba(255, 255, 255, 0.08);
  --vtx-border: rgba(255, 255, 255, 0.09);
  --vtx-text: #e8ecf4;
  --vtx-text-dim: #9aa5b8;
  --vtx-text-faint: #667085;
  --vtx-accent: #4f8cff;
  --vtx-accent-2: #9b5cff;
  --vtx-accent-3: #2dd4bf;
  --vtx-gradient: linear-gradient(135deg, #4f8cff 0%, #9b5cff 100%);
  --vtx-gradient-text: linear-gradient(92deg, #6aa5ff 0%, #b07fff 55%, #2dd4bf 110%);
  --vtx-radius: 16px;
  --vtx-radius-sm: 10px;
  --vtx-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
  --vtx-font: "Inter", "SF Pro Display", "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --vtx-container-max: 1440px;
}

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

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

body {
  margin: 0;
  background: var(--vtx-bg);
  color: var(--vtx-text);
  font-family: var(--vtx-font);
  font-size: 16px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.25s ease;
}

button {
  font-family: inherit;
  cursor: pointer;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.6em;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

p {
  margin: 0 0 1em;
}

::selection {
  background: rgba(79, 140, 255, 0.4);
}

/* Accessibility */
.screen-reader-text {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
}

.vtx-skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 999;
  padding: 10px 18px;
  background: var(--vtx-accent);
  color: #fff;
  border-radius: 0 0 8px 0;
}
.vtx-skip-link:focus {
  left: 0;
}

/* ---------- Layout Container (Full-Width) ---------- */
.vtx-container {
  width: 100%;
  padding-left: clamp(20px, 4vw, 56px);
  padding-right: clamp(20px, 4vw, 56px);
  margin-left: auto;
  margin-right: auto;
}

.vtx-container--narrow {
  max-width: 860px;
}

.vtx-section {
  padding: clamp(64px, 9vw, 132px) 0;
  position: relative;
}

/* ---------- Header Navigation ---------- */
.vtx-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: padding 0.3s ease, background 0.3s ease, border-color 0.3s ease;
  border-bottom: 1px solid transparent;
}

.vtx-header.is-scrolled {
  padding: 10px 0;
  background: rgba(10, 14, 26, 0.96);
  border-bottom-color: var(--vtx-border);
}

.vtx-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.vtx-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.02em;
}

.vtx-logo__mark {
  width: 30px; height: 30px;
  border-radius: 9px;
  background: var(--vtx-gradient);
  position: relative;
  flex: none;
}
.vtx-logo__mark::after {
  content: "";
  position: absolute;
  inset: 7px;
  border-radius: 4px;
  background: var(--vtx-bg);
}

.vtx-nav {
  display: flex;
  align-items: center;
  gap: 28px;
}

.vtx-nav__list {
  display: flex;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.vtx-nav__list a {
  display: block;
  padding: 8px 16px;
  border-radius: 999px;
  color: var(--vtx-text-dim);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.25s ease, background 0.25s ease;
}

.vtx-nav__list a:hover,
.vtx-nav__list .current-menu-item > a,
.vtx-nav__list .current_page_item > a {
  color: var(--vtx-text);
  background: var(--vtx-surface);
}

/* Mobile Menu Button */
.vtx-burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  background: var(--vtx-surface);
  border: 1px solid var(--vtx-border);
  border-radius: var(--vtx-radius-sm);
  padding: 0 11px;
}
.vtx-burger span {
  display: block;
  height: 2px;
  background: var(--vtx-text);
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.vtx-burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.vtx-burger.is-open span:nth-child(2) { opacity: 0; }
.vtx-burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.vtx-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  border: none;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  white-space: nowrap;
}

.vtx-btn--primary {
  background: var(--vtx-gradient);
  color: #fff;
  box-shadow: 0 8px 28px rgba(79, 140, 255, 0.35);
}
.vtx-btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 38px rgba(155, 92, 255, 0.45);
  color: #fff;
}

.vtx-btn--ghost {
  background: var(--vtx-surface);
  border: 1px solid var(--vtx-border);
  color: var(--vtx-text);
}
.vtx-btn--ghost:hover {
  background: var(--vtx-surface-hover);
  transform: translateY(-2px);
  color: var(--vtx-text);
}

.vtx-btn--sm {
  padding: 9px 20px;
  font-size: 14px;
}

/* ---------- Hero Section ---------- */
.vtx-hero {
  position: relative;
  padding: calc(clamp(120px, 16vw, 200px) + 40px) 0 clamp(72px, 10vw, 140px);
  overflow: hidden;
  text-align: center;
}

.vtx-hero__glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.32;
  pointer-events: none;
}
.vtx-hero__glow--a {
  width: 620px; height: 620px;
  background: #4f8cff;
  top: -220px; left: -140px;
}
.vtx-hero__glow--b {
  width: 560px; height: 560px;
  background: #9b5cff;
  top: -120px; right: -160px;
}
.vtx-hero__glow--c {
  width: 420px; height: 420px;
  background: #2dd4bf;
  bottom: -260px; left: 38%;
  opacity: 0.16;
}

.vtx-hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 40%, transparent 100%);
  mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 40%, transparent 100%);
  pointer-events: none;
}

.vtx-hero__content {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
}

.vtx-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--vtx-surface);
  border: 1px solid var(--vtx-border);
  color: var(--vtx-text-dim);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 28px;
}
.vtx-hero__eyebrow::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--vtx-accent-3);
  box-shadow: 0 0 12px var(--vtx-accent-3);
  animation: vtxth-pulse 2.2s ease-in-out infinite;
}

@keyframes vtxth-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.vtx-hero__title {
  font-size: clamp(38px, 6vw, 76px);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin-bottom: 24px;
}

.vtx-hero__title em {
  font-style: normal;
  background: var(--vtx-gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.vtx-hero__sub {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--vtx-text-dim);
  max-width: 640px;
  margin: 0 auto 40px;
}

.vtx-hero__actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.vtx-hero__stats {
  display: flex;
  justify-content: center;
  gap: clamp(32px, 6vw, 80px);
  flex-wrap: wrap;
}

.vtx-stat {
  text-align: center;
}
.vtx-stat__num {
  font-size: clamp(28px, 3.4vw, 42px);
  font-weight: 800;
  background: var(--vtx-gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  line-height: 1.2;
}
.vtx-stat__label {
  font-size: 14px;
  color: var(--vtx-text-faint);
}

/* ---------- Section Headings ---------- */
.vtx-section-head {
  max-width: 720px;
  margin-bottom: clamp(36px, 5vw, 64px);
}

.vtx-section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.vtx-eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background: var(--vtx-gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  margin-bottom: 14px;
}

.vtx-section-title {
  font-size: clamp(28px, 4vw, 46px);
  letter-spacing: -0.03em;
}

.vtx-section-sub {
  color: var(--vtx-text-dim);
  font-size: clamp(15px, 1.6vw, 18px);
  margin-bottom: 0;
}

/* ---------- CMS Platform Filter Bar ---------- */
.vtx-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: clamp(32px, 4vw, 52px);
}

.vtx-filter__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: 999px;
  background: var(--vtx-surface);
  border: 1px solid var(--vtx-border);
  color: var(--vtx-text-dim);
  font-size: 15px;
  font-weight: 500;
  transition: color 0.25s ease, background 0.25s ease, border-color 0.25s ease;
}

.vtx-filter__item:hover {
  color: var(--vtx-text);
  background: var(--vtx-surface-hover);
}

.vtx-filter__item.is-active {
  background: var(--vtx-gradient);
  border-color: transparent;
  color: #fff;
  box-shadow: 0 6px 22px rgba(79, 140, 255, 0.35);
}

.vtx-filter__count {
  font-size: 12px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
}

/* ---------- Theme Product Cards ---------- */
.vtx-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.4vw, 32px);
}

.vtx-card {
  background: var(--vtx-surface);
  border: 1px solid var(--vtx-border);
  border-radius: var(--vtx-radius);
  overflow: hidden;
  transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
  display: flex;
  flex-direction: column;
}

.vtx-card:hover {
  transform: translateY(-8px);
  border-color: rgba(79, 140, 255, 0.45);
  box-shadow: var(--vtx-shadow);
}

.vtx-card__media {
  position: relative;
  display: block;
  aspect-ratio: 16 / 10.5;
  overflow: hidden;
  background: var(--vtx-bg-alt);
}

.vtx-card__img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.vtx-card:hover .vtx-card__img {
  transform: scale(1.05);
}

.vtx-card__placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%; height: 100%;
  font-size: 42px;
  font-weight: 800;
  background: var(--vtx-gradient);
  opacity: 0.85;
  color: #fff;
}

.vtx-card__badge {
  position: absolute;
  top: 14px; left: 14px;
  padding: 5px 14px;
  border-radius: 999px;
  background: rgba(10, 14, 26, 0.85);
  border: 1px solid rgba(79, 140, 255, 0.5);
  color: #8ab4ff;
  font-size: 12px;
  font-weight: 600;
}

.vtx-card__body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.vtx-card__platforms {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.vtx-chip {
  font-size: 12px;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 999px;
  background: rgba(79, 140, 255, 0.14);
  color: #8ab4ff;
  border: 1px solid rgba(79, 140, 255, 0.25);
}

.vtx-card__title {
  font-size: 21px;
  margin-bottom: 10px;
}
.vtx-card__title a:hover {
  color: var(--vtx-accent);
}

.vtx-card__excerpt {
  color: var(--vtx-text-dim);
  font-size: 15px;
  flex: 1;
}

.vtx-card__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 18px;
  margin-top: 8px;
  border-top: 1px solid var(--vtx-border);
}

.vtx-price {
  font-size: 22px;
  font-weight: 800;
}
.vtx-price--sale {
  color: var(--vtx-accent-3);
  margin-right: 8px;
}
.vtx-price--origin {
  font-size: 15px;
  font-weight: 500;
  color: var(--vtx-text-faint);
  text-decoration: line-through;
}
.vtx-price--free {
  color: var(--vtx-accent-3);
}

/* ---------- Features Section ---------- */
.vtx-features {
  background: var(--vtx-bg-alt);
  border-top: 1px solid var(--vtx-border);
  border-bottom: 1px solid var(--vtx-border);
}

.vtx-feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(20px, 2.4vw, 32px);
}

.vtx-feature {
  padding: 34px 30px;
  border-radius: var(--vtx-radius);
  background: var(--vtx-surface);
  border: 1px solid var(--vtx-border);
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.vtx-feature:hover {
  transform: translateY(-6px);
  border-color: rgba(155, 92, 255, 0.4);
}

.vtx-feature__icon {
  width: 52px; height: 52px;
  border-radius: 14px;
  background: var(--vtx-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
}
.vtx-feature__icon svg {
  width: 26px; height: 26px;
  stroke: #fff;
}

.vtx-feature__title {
  font-size: 19px;
  margin-bottom: 10px;
}

.vtx-feature__text {
  color: var(--vtx-text-dim);
  font-size: 15px;
  margin: 0;
}

/* ---------- Detail Page ---------- */
.vtx-detail {
  padding-top: calc(clamp(120px, 14vw, 170px));
}

.vtx-detail__hero {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: clamp(32px, 4vw, 64px);
  align-items: center;
  margin-bottom: clamp(48px, 6vw, 80px);
}

.vtx-detail__shot {
  border-radius: var(--vtx-radius);
  overflow: hidden;
  border: 1px solid var(--vtx-border);
  box-shadow: var(--vtx-shadow);
}
.vtx-detail__shot img {
  width: 100%;
}

.vtx-detail__title {
  font-size: clamp(32px, 4.4vw, 54px);
  letter-spacing: -0.03em;
}

.vtx-detail__meta {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin: 18px 0 22px;
}

.vtx-detail__excerpt {
  color: var(--vtx-text-dim);
  font-size: 17px;
  margin-bottom: 28px;
}

.vtx-detail__price-row {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.vtx-detail__price .vtx-price {
  font-size: 36px;
}

.vtx-detail__actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.vtx-highlights {
  list-style: none;
  padding: 0;
  margin: 0 0 32px;
  display: grid;
  gap: 10px;
}
.vtx-highlights li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: var(--vtx-text-dim);
  font-size: 15px;
}
.vtx-highlights li::before {
  content: "";
  width: 20px; height: 20px;
  flex: none;
  margin-top: 2px;
  border-radius: 50%;
  background: rgba(45, 212, 191, 0.15);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%232dd4bf' stroke-width='3'%3E%3Cpath d='M5 13l4 4L19 7'/%3E%3C/svg%3E");
  background-size: 12px;
  background-position: center;
  background-repeat: no-repeat;
}

/* Detail Page Content Area */
.vtx-detail__content {
  max-width: 860px;
  margin: 0 auto;
  color: var(--vtx-text-dim);
  font-size: 17px;
}
.vtx-detail__content h2,
.vtx-detail__content h3 {
  color: var(--vtx-text);
  margin-top: 1.6em;
}
.vtx-detail__content a {
  color: var(--vtx-accent);
  text-decoration: underline;
}
.vtx-detail__content img {
  border-radius: var(--vtx-radius-sm);
}

/* ---------- Generic Pages ---------- */
.vtx-page {
  padding-top: calc(clamp(120px, 14vw, 170px));
}

.vtx-page__title {
  font-size: clamp(32px, 4.4vw, 52px);
}

.vtx-entry {
  max-width: 860px;
  margin: 0 auto;
  color: var(--vtx-text-dim);
  font-size: 17px;
}
.vtx-entry h2, .vtx-entry h3 {
  color: var(--vtx-text);
}
.vtx-entry a {
  color: var(--vtx-accent);
}

/* ---------- Footer ---------- */
.vtx-footer {
  border-top: 1px solid var(--vtx-border);
  background: var(--vtx-bg-alt);
}

.vtx-footer__cta {
  padding: clamp(56px, 8vw, 96px) 0;
  text-align: center;
  background:
    radial-gradient(ellipse 60% 90% at 50% 0%, rgba(79, 140, 255, 0.14), transparent);
}

.vtx-footer__cta-title {
  font-size: clamp(26px, 3.6vw, 40px);
  margin-bottom: 12px;
}

.vtx-footer__cta-sub {
  color: var(--vtx-text-dim);
  margin-bottom: 32px;
}

.vtx-subscribe {
  display: flex;
  gap: 12px;
  justify-content: center;
  max-width: 520px;
  margin: 0 auto;
}

.vtx-subscribe__input {
  flex: 1;
  min-width: 0;
  padding: 14px 22px;
  border-radius: 999px;
  border: 1px solid var(--vtx-border);
  background: var(--vtx-surface);
  color: var(--vtx-text);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.25s ease, box-shadow 0.25s ease;
}
.vtx-subscribe__input::placeholder {
  color: var(--vtx-text-faint);
}
.vtx-subscribe__input:focus {
  border-color: var(--vtx-accent);
  box-shadow: 0 0 0 3px rgba(79, 140, 255, 0.2);
}

.vtx-subscribe__msg {
  margin-top: 16px;
  font-size: 14px;
  min-height: 22px;
  color: var(--vtx-text-dim);
}
.vtx-subscribe__msg.is-ok { color: var(--vtx-accent-3); }
.vtx-subscribe__msg.is-err { color: #ff7a7a; }

.vtx-footer__main {
  padding: clamp(48px, 6vw, 72px) 0;
}

.vtx-footer__grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1fr;
  gap: clamp(28px, 4vw, 56px);
}

.vtx-footer__desc {
  color: var(--vtx-text-faint);
  font-size: 14px;
  margin-top: 16px;
  max-width: 300px;
}

.vtx-footer__title {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--vtx-text-faint);
  margin-bottom: 18px;
}

.vtx-footer__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.vtx-footer__links a {
  color: var(--vtx-text-dim);
  font-size: 15px;
}
.vtx-footer__links a:hover {
  color: var(--vtx-text);
}

.vtx-footer__bar {
  border-top: 1px solid var(--vtx-border);
  padding: 22px 0;
}
.vtx-footer__bar-inner {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  color: var(--vtx-text-faint);
  font-size: 14px;
}
.vtx-footer__bar-inner p {
  margin: 0;
}

/* ---------- 404 Page ---------- */
.vtx-404 {
  padding: clamp(140px, 18vw, 220px) 0;
  text-align: center;
}
.vtx-404__code {
  font-size: clamp(72px, 12vw, 140px);
  font-weight: 800;
  background: var(--vtx-gradient-text);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
  line-height: 1;
  margin-bottom: 16px;
}

/* ---------- Scroll Animations ---------- */
[data-vtx-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-vtx-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  [data-vtx-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }
  .vtx-hero__eyebrow::before { animation: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .vtx-grid { grid-template-columns: repeat(2, 1fr); }
  .vtx-feature-grid { grid-template-columns: repeat(2, 1fr); }
  .vtx-footer__grid { grid-template-columns: 1fr 1fr; }
  .vtx-detail__hero { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  .vtx-burger { display: flex; }

  .vtx-nav {
    position: fixed;
    top: 72px;
    left: 12px;
    right: 12px;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 14px;
    background: rgba(13, 18, 32, 0.99);
    border: 1px solid var(--vtx-border);
    border-radius: 14px;
    box-shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
    z-index: -1;
  }
  .vtx-nav.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    z-index: 90;
  }

  .vtx-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
  }
  .vtx-nav__list a {
    display: block;
    font-size: 16px;
    padding: 11px 14px;
    border-radius: 9px;
  }
  .vtx-nav__cta {
    width: 100%;
    text-align: center;
    margin-top: 6px;
  }

  .vtx-hero__actions .vtx-btn {
    width: 100%;
    max-width: 320px;
  }

  .vtx-subscribe {
    flex-direction: column;
  }
  .vtx-subscribe__input { width: 100%; }

  .vtx-footer__grid { grid-template-columns: 1fr; }
  .vtx-footer__bar-inner { justify-content: center; text-align: center; }
}

@media (max-width: 560px) {
  .vtx-grid { grid-template-columns: 1fr; }
  .vtx-feature-grid { grid-template-columns: 1fr; }
  .vtx-hero__stats { gap: 24px; }
  .vtx-detail__actions .vtx-btn { width: 100%; }
}

/* ==========================================================================
   Purchase Form (In-site Checkout — PayPal Button / Stripe Dual Gateway)
   ========================================================================== */
.vtx-buy {
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  max-width: 380px;
}
.vtx-buy__label {
  font-size: 13px;
  color: var(--vtx-muted, #94a3b8);
}
.vtx-buy__input {
  width: 100%;
  padding: 12px 16px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  background: rgba(15, 23, 42, 0.6);
  color: #e2e8f0;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s ease;
}
.vtx-buy__input:focus {
  border-color: #6366f1;
}
.vtx-buy__note {
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  color: #64748b;
}
.vtx-btn--disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}