/* =========================================================
   电视答题 — dianshidati.cn
   Apex-style visual system: grid paper, navy ink, blue + amber
   ========================================================= */

:root {
  --bg: #ffffff;
  --bg-elevated: #f8fafc;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #64748b;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --gold: #f59e0b;
  --gold-light: #fef3c7;
  --emerald: #10b981;
  --dark-bg: #0f172a;
  --dark-bg-elevated: #1e293b;
  --dark-border: #334155;
  --dark-text: #f8fafc;
  --dark-text-muted: #94a3b8;
  --apex-btn-slope: polygon(.875rem 0, 100% 0, calc(100% - .875rem) 100%, 0 100%);
  --apex-btn-slope-sm: polygon(.5rem 0, 100% 0, calc(100% - .5rem) 100%, 0 100%);
  --apex-surface-border: 1px solid color-mix(in srgb, var(--gold) 28%, var(--border));
  --apex-rail-top: linear-gradient(90deg, var(--primary), var(--gold) 50%, var(--primary));
  --apex-rail-side: linear-gradient(180deg, var(--primary), var(--gold));
  --apex-glow: 0 0 28px color-mix(in srgb, var(--primary) 28%, transparent);
  --apex-glow-gold: 0 0 24px color-mix(in srgb, var(--gold) 35%, transparent);
  --apex-gradient: linear-gradient(135deg, var(--primary), color-mix(in srgb, var(--primary) 65%, var(--gold)));
  --apex-gradient-gold: linear-gradient(135deg, var(--gold), color-mix(in srgb, var(--gold) 70%, #fef3c7));
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
}

[data-theme="dark"] {
  --bg: var(--dark-bg);
  --bg-elevated: var(--dark-bg-elevated);
  --border: var(--dark-border);
  --text: var(--dark-text);
  --text-muted: var(--dark-text-muted);
}

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

html {
  scroll-behavior: smooth;
}

body.theme-apex {
  margin: 0;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 50% at 100% 0%, color-mix(in srgb, var(--primary) 8%, transparent), transparent 55%),
    radial-gradient(ellipse 60% 40% at 0% 100%, color-mix(in srgb, var(--primary) 5%, transparent), transparent 50%),
    var(--bg);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  position: relative;
  overflow-x: hidden;
}

body.theme-apex::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .08;
  background-image:
    repeating-linear-gradient(0deg, color-mix(in srgb, var(--primary) 20%, transparent) 0 1px, transparent 1px 32px),
    repeating-linear-gradient(90deg, color-mix(in srgb, var(--primary) 20%, transparent) 0 1px, transparent 1px 32px);
}

body.theme-apex::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .025;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px, color-mix(in srgb, var(--gold) 20%, transparent) 2px, color-mix(in srgb, var(--gold) 20%, transparent) 3px);
}

#main {
  flex: 1;
  position: relative;
  z-index: 1;
}

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

a {
  color: var(--primary);
  text-decoration: none;
}

a:hover {
  color: var(--primary-hover);
}

button {
  font-family: inherit;
}

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

::selection {
  color: #fff;
  background: var(--primary);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.container {
  width: min(1120px, 100% - 2rem);
  margin-inline: auto;
}

.icon {
  width: 1.25rem;
  height: 1.25rem;
}

.icon-sprite {
  display: none;
}

[data-theme="light"] .icon-moon,
[data-theme="dark"] .icon-sun {
  display: none;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 44px;
  padding: .625rem 1.75rem;
  border: 1px solid transparent;
  border-radius: 0;
  font-family: inherit;
  font-size: .8125rem;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .06em;
  text-transform: uppercase;
  cursor: pointer;
  clip-path: var(--apex-btn-slope);
  transition: background .2s, color .2s, border-color .2s, box-shadow .2s, transform .15s;
}

.btn-primary {
  color: #fff;
  border-color: color-mix(in srgb, var(--gold) 45%, var(--primary));
  background-image: var(--apex-gradient);
  background-size: 200% 200%;
  box-shadow:
    var(--apex-glow),
    inset 0 1px color-mix(in srgb, #fff 28%, transparent),
    inset 0 -1px color-mix(in srgb, #000 15%, transparent);
  text-shadow: 0 1px 2px color-mix(in srgb, #000 25%, transparent);
}

.btn-primary:hover {
  color: #fff;
  background-image: linear-gradient(135deg, var(--primary-hover), color-mix(in srgb, var(--primary-hover) 60%, var(--gold)));
  background-size: 100% 100%;
  box-shadow:
    var(--apex-glow),
    var(--apex-glow-gold),
    inset 0 1px color-mix(in srgb, #fff 32%, transparent);
  transform: translateY(-2px);
  animation: none;
}

@media (prefers-reduced-motion: no-preference) {
  .btn-primary:not(:hover) {
    animation: apex-shimmer 4s ease-in-out infinite;
  }
}

@keyframes apex-shimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.btn-ghost {
  color: var(--text);
  border: 1px solid color-mix(in srgb, var(--primary) 30%, var(--border));
  background: color-mix(in srgb, var(--bg) 60%, transparent);
  backdrop-filter: blur(8px);
}

.btn-ghost:hover {
  color: var(--primary);
  border-color: color-mix(in srgb, var(--gold) 50%, var(--primary));
  box-shadow: var(--apex-glow-gold);
}

.btn-lg {
  padding: .875rem 2.25rem;
  font-size: 1.0625rem;
  clip-path: polygon(1rem 0, 100% 0, calc(100% - 1rem) 100%, 0 100%);
}

/* ---------- Navigation ---------- */

.site-nav-bar {
  position: sticky;
  top: 0;
  z-index: 201;
  --nav-bar-height: 4.25rem;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px);
}

.site-nav-bar::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary) 15%, var(--gold) 45%, #fde68a 50%, var(--gold) 55%, var(--primary) 85%, transparent);
}

.site-nav-bar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: var(--nav-bar-height);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .375rem 0 .375rem .875rem;
  color: var(--text);
  border-left: 3px solid transparent;
  border-image: var(--apex-gradient) 1;
  position: relative;
  z-index: 202;
}

.logo-link:hover {
  color: var(--text);
}

.logo-img {
  width: auto;
  height: 2rem;
  max-width: 10rem;
  object-fit: contain;
  border-radius: 0;
}

.logo-text {
  display: block;
  max-width: 240px;
  max-height: 36px;
  overflow: hidden;
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.nav-toggle {
  position: relative;
  z-index: 202;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
  cursor: pointer;
  clip-path: var(--apex-btn-slope-sm);
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  margin-inline: auto;
  background: var(--text);
  transition: transform .2s, opacity .2s;
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.is-open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 199;
  background: color-mix(in srgb, #000 65%, transparent);
  opacity: 0;
  transition: opacity .2s;
}

.nav-backdrop.is-open {
  display: block;
  opacity: 1;
}

.site-nav {
  display: none;
  position: fixed;
  top: var(--nav-bar-height);
  right: 0;
  bottom: 0;
  left: 0;
  z-index: 200;
  flex-direction: column;
  padding: 1rem 1.5rem 1.5rem;
  background: var(--bg);
  border-top: 1px solid var(--border);
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.site-nav.is-open {
  display: flex;
}

.site-nav-inner {
  display: flex;
  flex: 1;
  flex-direction: column;
  width: min(1120px, 100%);
  margin-inline: auto;
}

.nav-list {
  margin: 0 0 1.5rem;
  padding: 0;
  list-style: none;
}

.nav-list a {
  display: block;
  padding: .75rem 0;
  color: var(--text);
  font-size: .9375rem;
  font-weight: 500;
  letter-spacing: .03em;
  text-transform: uppercase;
}

.nav-actions {
  display: flex;
  flex-direction: column;
  gap: .75rem;
  margin-top: auto;
}

@media (max-width: 767px) {
  .site-nav-bar {
    background: var(--bg);
    backdrop-filter: none;
  }
}

@media (min-width: 768px) {
  .nav-backdrop {
    display: none !important;
  }

  .nav-toggle {
    display: none;
  }

  .site-nav {
    display: flex;
    position: static;
    inset: auto;
    z-index: auto;
    flex: 0 0 auto;
    flex-direction: row;
    align-items: center;
    justify-content: flex-end;
    margin-left: auto;
    padding: 0;
    background: transparent;
    border: 0;
    overflow: visible;
  }

  .site-nav-inner {
    flex: none;
    flex-direction: row;
    align-items: center;
    gap: 2rem;
    width: auto;
    margin: 0;
  }

  .nav-list {
    display: flex;
    gap: 2rem;
    margin: 0;
  }

  .nav-list a {
    position: relative;
    padding: .25rem 0;
    color: var(--text-muted);
    font-size: .8125rem;
  }

  .nav-list a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -4px;
    width: 0;
    height: 2px;
    background: var(--apex-gradient);
    transition: width .2s;
  }

  .nav-list a:hover {
    color: color-mix(in srgb, var(--gold) 60%, var(--text));
  }

  .nav-list a:hover::after {
    width: 100%;
  }

  .nav-actions {
    flex-direction: row;
    align-items: center;
    margin-top: 0;
  }
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 5rem 0 6rem;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  right: -10%;
  width: 55%;
  height: 85%;
  pointer-events: none;
  background:
    radial-gradient(ellipse, color-mix(in srgb, var(--primary) 18%, transparent), transparent 65%),
    radial-gradient(ellipse at 80% 20%, color-mix(in srgb, var(--gold) 12%, transparent), transparent 50%);
}

.hero-bg-accent {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  opacity: .9;
  background: linear-gradient(115deg, transparent 42%, color-mix(in srgb, var(--primary) 8%, transparent) 42%, color-mix(in srgb, var(--gold) 6%, transparent) 50%, transparent 58%);
}

.hero-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 3rem;
  align-items: center;
}

.hero-content {
  position: relative;
  padding: 1.5rem 0 1.5rem 1.25rem;
}

.hero-accent-bar {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--apex-rail-side);
  box-shadow: var(--apex-glow-gold);
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: 1.25rem;
}

.hero-badge {
  display: inline-block;
  padding: .35rem .75rem;
  color: color-mix(in srgb, var(--gold) 80%, var(--primary));
  background: color-mix(in srgb, var(--gold) 8%, var(--bg));
  border: 1px solid color-mix(in srgb, var(--gold) 45%, var(--primary));
  box-shadow: inset 0 1px color-mix(in srgb, var(--gold) 15%, transparent);
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.hero-title {
  margin: 0 0 1rem;
  font-size: clamp(2.125rem, 5.5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -.03em;
  font-variant-numeric: tabular-nums;
  color: transparent;
  background: linear-gradient(135deg, var(--text) 15%, var(--primary) 45%, color-mix(in srgb, var(--gold) 85%, var(--primary)) 75%);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero-subtitle {
  max-width: 40ch;
  margin: 0 0 2rem;
  color: var(--text-muted);
  font-size: clamp(1rem, 2vw, 1.1875rem);
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.hero-media {
  position: relative;
  justify-self: end;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 100%;
  max-width: 34rem;
  margin-inline: auto;
  padding: 2.25rem 1rem 1.125rem;
  overflow: hidden;
  border: var(--apex-surface-border);
  border-radius: 0;
  background: linear-gradient(180deg, var(--bg-elevated), color-mix(in srgb, var(--bg) 88%, var(--bg-elevated)));
  box-shadow:
    var(--apex-glow),
    var(--apex-glow-gold),
    inset 0 0 0 1px color-mix(in srgb, var(--gold) 10%, transparent);
}

.hero-media::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  opacity: .3;
  background: repeating-linear-gradient(0deg, transparent, transparent 3px, color-mix(in srgb, var(--primary) 4%, transparent) 3px, color-mix(in srgb, var(--primary) 4%, transparent) 4px);
}

.hero-media::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2;
  height: 2px;
  pointer-events: none;
  background: var(--apex-rail-top);
  opacity: .9;
}

.hero-device-notch {
  position: absolute;
  top: .625rem;
  left: 50%;
  z-index: 3;
  width: 4rem;
  height: .375rem;
  transform: translateX(-50%);
  background: var(--apex-gradient);
  box-shadow: 0 0 8px color-mix(in srgb, var(--gold) 40%, transparent);
}

.hero-screen {
  position: relative;
  z-index: 1;
  display: grid;
  width: 100%;
  overflow: hidden;
  border: 1px solid color-mix(in srgb, var(--gold) 25%, var(--border));
  background: #0f172a;
  box-shadow: 0 13px 36px color-mix(in srgb, #0f172a 24%, transparent);
}

.hero-screen::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  z-index: 2;
  height: 1px;
  background: linear-gradient(90deg, transparent, #fde68a, transparent);
  opacity: .8;
}

.carousel {
  position: relative;
  z-index: 1;
  width: 100%;
}

.carousel-slide {
  grid-area: 1 / 1;
  display: flex;
  justify-content: center;
  width: 100%;
  opacity: 0;
  pointer-events: none;
  transition: opacity .5s ease;
}

.carousel-slide:not(.is-active) {
  position: absolute;
  top: 0;
  left: 50%;
  width: 100%;
  transform: translateX(-50%);
}

.carousel-slide.is-active {
  opacity: 1;
  pointer-events: auto;
}

.hero-image {
  width: 100%;
  max-width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border: 0;
}

.carousel-dots {
  display: flex;
  justify-content: center;
  gap: .375rem;
  width: 100%;
  margin-top: 1.125rem;
  position: relative;
  z-index: 1;
}

.carousel-dot {
  flex: 1;
  max-width: 2.5rem;
  height: 3px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: var(--border);
  cursor: pointer;
  transition: background .2s, max-width .2s, box-shadow .2s;
}

.carousel-dot.is-active {
  max-width: 3.5rem;
  background: var(--apex-gradient-gold);
  box-shadow: var(--apex-glow-gold);
}

.hero-meta {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: 100%;
  margin-top: .875rem;
  padding-top: .75rem;
  border-top: 1px solid color-mix(in srgb, var(--gold) 22%, var(--border));
}

.hero-meta-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .0625rem;
  padding-inline: .25rem;
  text-align: center;
}

.hero-meta-item + .hero-meta-item {
  border-left: 1px solid color-mix(in srgb, var(--primary) 14%, var(--border));
}

.hero-meta-item strong {
  color: color-mix(in srgb, var(--primary) 72%, var(--text));
  font-size: 1.0625rem;
  font-weight: 800;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.hero-meta-item span {
  color: var(--text-muted);
  font-size: .6875rem;
  line-height: 1.4;
  letter-spacing: .04em;
}

@media (min-width: 1024px) {
  .hero {
    padding: 5rem 0 6rem;
  }

  .hero-inner {
    grid-template-columns: 1.05fr .95fr;
    gap: 4rem;
    min-height: 34rem;
  }

  .hero-media {
    align-self: start;
  }
}

@media (max-width: 359px) {
  .hero-title {
    font-size: 1.75rem;
    letter-spacing: -.04em;
  }
}

@media (max-width: 767px) {
  .hero {
    padding: 2.75rem 0 3.5rem;
  }

  .hero-inner {
    gap: 2rem;
  }

  .hero-content {
    padding-top: 1rem;
    padding-bottom: 1rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-bg-accent {
    opacity: .45;
  }

  .hero-media {
    max-width: 100%;
    padding: 1.75rem .75rem 1rem;
  }
}

/* ---------- Section heading ---------- */

.section-header {
  margin-bottom: 2.5rem;
  text-align: center;
}

.section-header-apex {
  padding-left: 1rem;
  text-align: left;
  border-left: 3px solid transparent;
  border-image: var(--apex-gradient) 1;
}

.section-header-apex h2 {
  margin: 0 0 .5rem;
  font-size: clamp(1.375rem, 2.8vw, 1.875rem);
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.section-header-apex p {
  max-width: 42ch;
  margin: 0;
  color: var(--text-muted);
}

/* ---------- Feature cards ---------- */

.features {
  position: relative;
  padding: 4.5rem 0;
  overflow: hidden;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.features::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--apex-rail-top);
  opacity: .65;
}

.features-deco {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .06;
  background:
    repeating-linear-gradient(0deg, color-mix(in srgb, var(--primary) 30%, transparent) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(90deg, color-mix(in srgb, var(--primary) 30%, transparent) 0 1px, transparent 1px 48px);
}

.features-grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1rem;
}

.feature-card {
  position: relative;
  padding: 1.5rem;
  overflow: hidden;
  background: var(--bg);
  border: var(--apex-surface-border);
  border-radius: 0;
  transition: border-color .2s, box-shadow .2s, transform .2s;
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  width: 3px;
  pointer-events: none;
  background: color-mix(in srgb, var(--primary) 35%, transparent);
  transition: background .2s, box-shadow .2s;
}

.feature-card::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2;
  height: 2px;
  pointer-events: none;
  background: var(--apex-rail-top);
  opacity: .9;
}

.feature-card:hover {
  border-color: color-mix(in srgb, var(--gold) 40%, var(--primary));
  box-shadow: var(--apex-glow), 0 12px 32px color-mix(in srgb, #000 12%, transparent);
  transform: translateY(-3px);
}

.feature-card:hover::before {
  background: var(--apex-rail-side);
  box-shadow: var(--apex-glow-gold);
}

.feature-card-featured {
  border-color: color-mix(in srgb, var(--gold) 45%, var(--primary));
  background: linear-gradient(135deg, color-mix(in srgb, var(--gold) 6%, var(--bg)), color-mix(in srgb, var(--primary) 5%, var(--bg)));
  box-shadow: var(--apex-glow-gold);
}

.feature-card-featured::before {
  background: var(--apex-gradient-gold);
}

.feature-index {
  position: absolute;
  top: .5rem;
  right: .875rem;
  z-index: 1;
  color: transparent;
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.04em;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  user-select: none;
  background: linear-gradient(180deg, color-mix(in srgb, var(--primary) 18%, transparent), color-mix(in srgb, var(--gold) 10%, transparent));
  -webkit-background-clip: text;
  background-clip: text;
}

.feature-card-featured .feature-index {
  background: linear-gradient(180deg, color-mix(in srgb, var(--gold) 35%, transparent), color-mix(in srgb, var(--primary) 15%, transparent));
  -webkit-background-clip: text;
  background-clip: text;
}

.feature-card-body {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.feature-icon {
  flex-shrink: 0;
  width: 2.75rem;
  height: 2.75rem;
  padding: .5rem;
  color: color-mix(in srgb, var(--gold) 70%, var(--primary));
  background: color-mix(in srgb, var(--primary) 10%, var(--bg));
  border: 1px solid color-mix(in srgb, var(--gold) 35%, var(--primary));
  box-shadow: inset 0 1px color-mix(in srgb, var(--gold) 12%, transparent);
}

.feature-text h3 {
  margin: 0 0 .375rem;
  font-size: 1.0625rem;
  font-weight: 700;
  letter-spacing: .02em;
  text-transform: uppercase;
}

.feature-text p {
  margin: 0;
  color: var(--text-muted);
  font-size: .9375rem;
  line-height: 1.6;
}

@media (min-width: 768px) {
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 767px) {
  .features {
    padding: 3.5rem 0;
  }
}

/* ---------- FAQ ---------- */

.faq {
  padding: 4.5rem 0;
}

.faq-list {
  display: grid;
  gap: .75rem;
  max-width: 800px;
}

.faq-item {
  position: relative;
  overflow: hidden;
  background: var(--bg-elevated);
  border: var(--apex-surface-border);
  border-radius: 0;
  transition: border-color .2s, box-shadow .2s;
}

.faq-item::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  width: 3px;
  background: color-mix(in srgb, var(--primary) 35%, transparent);
  transition: background .2s, box-shadow .2s;
}

.faq-item::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2;
  height: 2px;
  background: var(--apex-rail-top);
  opacity: .9;
}

.faq-item[open] {
  border-color: color-mix(in srgb, var(--gold) 50%, var(--primary));
  box-shadow: var(--apex-glow-gold);
}

.faq-item[open]::before {
  background: var(--apex-rail-side);
  box-shadow: var(--apex-glow-gold);
}

.faq-item summary {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.125rem 1.25rem;
  font-weight: 600;
  letter-spacing: .01em;
  list-style: none;
  cursor: pointer;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item summary::after {
  content: "+";
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 1.75rem;
  height: 1.75rem;
  color: color-mix(in srgb, var(--gold) 80%, var(--primary));
  border: 1px solid color-mix(in srgb, var(--gold) 45%, var(--primary));
  background: color-mix(in srgb, var(--gold) 6%, var(--bg));
  font-size: 1.125rem;
  font-weight: 700;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  clip-path: var(--apex-btn-slope-sm);
  transition: transform .2s, background .2s, box-shadow .2s;
}

.faq-item[open] summary::after {
  content: "\2212";
  color: #fff;
  border-color: color-mix(in srgb, var(--gold) 40%, var(--primary));
  background: var(--apex-gradient);
  box-shadow: var(--apex-glow);
}

.faq-question {
  flex: 1;
  min-width: 0;
}

.faq-item p {
  position: relative;
  z-index: 1;
  margin: 0;
  padding: 1rem 1.25rem 1.125rem;
  color: var(--text-muted);
  border-top: 1px solid color-mix(in srgb, var(--gold) 20%, var(--border));
  font-size: .9375rem;
  line-height: 1.65;
}

@media (min-width: 768px) {
  .faq-list {
    max-width: none;
    margin-inline: 0;
  }
}

@media (max-width: 767px) {
  .faq {
    padding: 3.5rem 0;
  }
}

/* ---------- Final CTA ---------- */

.cta-banner {
  position: relative;
  padding: 5rem 0;
  overflow: hidden;
  background: var(--bg);
}

.cta-banner::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  pointer-events: none;
  background: var(--apex-rail-top);
  opacity: .85;
}

.cta-bg-accent {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 70% 60% at 20% 50%, color-mix(in srgb, var(--gold) 10%, transparent), transparent 55%),
    linear-gradient(135deg, color-mix(in srgb, var(--primary) 12%, var(--bg-elevated)), var(--bg-elevated) 50%, color-mix(in srgb, var(--primary) 8%, var(--bg)));
}

.cta-bg-accent::after {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(-45deg, transparent, transparent 20px, color-mix(in srgb, var(--gold) 5%, transparent) 20px, color-mix(in srgb, var(--gold) 5%, transparent) 21px);
}

.cta-inner {
  position: relative;
  z-index: 1;
}

.cta-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.75rem;
  padding: 2.5rem;
  overflow: hidden;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  border: var(--apex-surface-border);
  border-radius: 0;
  box-shadow:
    var(--apex-glow),
    var(--apex-glow-gold),
    inset 0 0 0 1px color-mix(in srgb, var(--gold) 10%, transparent);
  backdrop-filter: blur(12px);
}

.cta-panel::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2;
  height: 2px;
  background: var(--apex-rail-top);
  opacity: .9;
}

.cta-text {
  position: relative;
  z-index: 1;
}

.cta-text h2 {
  margin: 0 0 .625rem;
  color: transparent;
  font-size: clamp(1.875rem, 4.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -.02em;
  text-transform: uppercase;
  background: linear-gradient(135deg, var(--text) 10%, var(--primary) 40%, color-mix(in srgb, var(--gold) 90%, var(--primary)) 80%);
  -webkit-background-clip: text;
  background-clip: text;
}

.cta-text p {
  max-width: 48ch;
  margin: 0;
  color: var(--text-muted);
  font-size: 1.0625rem;
}

.cta-banner .btn-primary {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  min-width: 12rem;
}

@media (min-width: 768px) {
  .cta-panel {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 3rem;
  }
}

@media (max-width: 767px) {
  .cta-banner {
    padding: 3.5rem 0;
  }

  .cta-panel {
    padding: 1.75rem;
  }

  .cta-text h2 {
    font-size: 1.5rem;
    letter-spacing: -.03em;
  }

  .cta-panel .btn {
    width: 100%;
  }
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 2.5rem 0;
  background: linear-gradient(180deg, var(--bg-elevated), color-mix(in srgb, var(--bg) 95%, var(--bg-elevated)));
  border-top: 1px solid var(--border);
}

.site-footer::before {
  content: "";
  display: block;
  width: min(1120px, 100% - 2rem);
  height: 2px;
  margin: 0 auto 2rem;
  background: linear-gradient(90deg, transparent, var(--primary) 20%, var(--gold) 50%, var(--primary) 80%, transparent);
  opacity: .55;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: .5rem 2rem;
}

.footer-nav a {
  color: var(--text-muted);
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: .04em;
  text-transform: uppercase;
  transition: color .2s;
}

.footer-nav a:hover {
  color: color-mix(in srgb, var(--gold) 65%, var(--primary));
}

.footer-copy {
  margin: 0;
  color: var(--text-muted);
  font-size: .75rem;
  letter-spacing: .02em;
}

@media (min-width: 768px) {
  .footer-inner {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
    text-align: left;
  }

  .footer-nav {
    order: 1;
    justify-content: flex-start;
  }

  .footer-copy {
    order: 2;
  }
}

/* ---------- Download modal ---------- */

.download-modal {
  width: 100%;
  max-width: 100%;
  height: 100%;
  max-height: 100%;
  margin: 0;
  padding: 0;
  border: 0;
  background: transparent;
}

.download-modal[open] {
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.download-modal::backdrop {
  background: color-mix(in srgb, #000 82%, transparent);
}

.download-modal-panel {
  position: relative;
  width: 100%;
  padding: 2rem 1.5rem;
  overflow: hidden;
  color: var(--text);
  background: var(--bg-elevated);
  border: var(--apex-surface-border);
  border-radius: 0;
  box-shadow: var(--apex-glow), 0 -12px 40px color-mix(in srgb, #000 35%, transparent);
  animation: modal-up .28s ease both;
}

.download-modal-panel::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2;
  height: 2px;
  background: var(--apex-rail-top);
}

@keyframes modal-up {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: translateY(0); }
}

.download-modal-hud {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .05;
  background:
    repeating-linear-gradient(0deg, color-mix(in srgb, var(--primary) 40%, transparent) 0 1px, transparent 1px 24px),
    repeating-linear-gradient(90deg, color-mix(in srgb, var(--primary) 40%, transparent) 0 1px, transparent 1px 24px);
}

.download-modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  z-index: 1;
  width: 44px;
  height: 44px;
  color: var(--text-muted);
  background: var(--bg);
  border: 1px solid color-mix(in srgb, var(--gold) 35%, var(--border));
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  clip-path: var(--apex-btn-slope-sm);
  transition: border-color .2s, color .2s, box-shadow .2s;
}

.download-modal-close:hover {
  color: color-mix(in srgb, var(--gold) 70%, var(--primary));
  border-color: color-mix(in srgb, var(--gold) 60%, var(--primary));
  box-shadow: var(--apex-glow-gold);
}

.download-modal h2 {
  position: relative;
  z-index: 1;
  margin: 0 2rem .5rem 0;
  color: var(--text);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.download-modal-subtitle {
  position: relative;
  z-index: 1;
  margin: 0 0 1.5rem;
  color: var(--text-muted);
  font-size: .9375rem;
}

.download-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

.download-modal .download-buttons {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  width: 100%;
}

.btn-store {
  display: grid;
  grid-template-columns: 1.25rem 1fr;
  column-gap: .75rem;
  min-width: 10rem;
  padding: .75rem 1.25rem;
  color: var(--text);
  background: var(--bg);
  border: 1px solid color-mix(in srgb, var(--gold) 30%, var(--border));
  border-radius: 0;
  clip-path: var(--apex-btn-slope-sm);
  transition: border-color .2s, color .2s, background .2s, box-shadow .2s;
}

.btn-store:hover {
  color: color-mix(in srgb, var(--gold) 70%, var(--primary));
  border-color: color-mix(in srgb, var(--gold) 55%, var(--primary));
  box-shadow: var(--apex-glow-gold);
}

.btn-store-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  align-self: stretch;
  width: 1.25rem;
}

.icon-store {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

.btn-store-text {
  display: flex;
  flex-direction: column;
  align-self: center;
  min-width: 0;
}

.btn-store-label {
  font-size: .875rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.download-modal .btn-store {
  width: 100%;
  min-width: 0;
}

.download-modal .btn-store-label {
  overflow-wrap: anywhere;
}

.download-modal-note {
  position: relative;
  z-index: 1;
  margin: 1rem 0 0;
  color: var(--text-muted);
  font-size: .75rem;
  line-height: 1.6;
}

@media (min-width: 640px) {
  .download-modal[open] {
    align-items: center;
  }

  .download-modal-panel {
    width: min(34rem, 92vw);
    margin: auto;
  }

  .download-modal .download-buttons {
    grid-template-columns: 1fr 1fr;
  }
}

/* ---------- Inner pages ---------- */

.page {
  width: min(760px, 100% - 2rem);
  margin-inline: auto;
  padding: 3.5rem 0 4.5rem;
}

.page-header {
  margin-bottom: 2rem;
  padding: 0 0 1.5rem 1rem;
  border-bottom: 1px solid var(--border);
  border-left: 3px solid transparent;
  border-image: var(--apex-rail-side) 1;
}

.page-header h1 {
  margin: 0 0 .5rem;
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -.02em;
  line-height: 1.2;
}

.page-meta,
.page-intro {
  margin: 0 0 2rem;
  color: var(--text-muted);
}

.page-header .page-meta {
  margin: 0;
}

.page-intro {
  font-size: 1.0625rem;
}

.legal-section {
  position: relative;
  margin-bottom: 1.25rem;
  padding: 1.25rem;
  overflow: hidden;
  background: var(--bg-elevated);
  border: var(--apex-surface-border);
}

.legal-section::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  width: 3px;
  background: color-mix(in srgb, var(--primary) 35%, transparent);
}

.legal-section::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2;
  height: 2px;
  background: var(--apex-rail-top);
  opacity: .9;
}

.legal-section h2 {
  position: relative;
  z-index: 1;
  margin: 0 0 .75rem;
  padding-bottom: .5rem;
  color: var(--text);
  border-bottom: 1px solid color-mix(in srgb, var(--gold) 30%, var(--border));
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: .03em;
  text-transform: uppercase;
}

.legal-section p,
.legal-section ul {
  position: relative;
  z-index: 1;
  margin: 0;
  color: var(--text-muted);
  line-height: 1.75;
}

.legal-section ul {
  padding-left: 1.25rem;
}

.legal-section li + li {
  margin-top: .375rem;
}

.legal-section a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

.contact-list {
  display: grid;
  gap: 1rem;
  margin: 0;
}

.contact-item {
  position: relative;
  padding: 1.25rem;
  overflow: hidden;
  background: var(--bg-elevated);
  border: var(--apex-surface-border);
  transition: border-color .2s, box-shadow .2s;
}

.contact-item::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 2;
  width: 3px;
  background: color-mix(in srgb, var(--primary) 35%, transparent);
}

.contact-item::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 2;
  height: 2px;
  background: var(--apex-rail-top);
  opacity: .9;
}

.contact-item:hover {
  border-color: color-mix(in srgb, var(--gold) 45%, var(--primary));
  box-shadow: var(--apex-glow-gold);
}

.contact-item:hover::before {
  background: var(--apex-rail-side);
  box-shadow: var(--apex-glow-gold);
}

.contact-item dt {
  position: relative;
  z-index: 1;
  margin-bottom: .375rem;
  color: color-mix(in srgb, var(--gold) 70%, var(--primary));
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.contact-item dd {
  position: relative;
  z-index: 1;
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 500;
}

.contact-legal {
  margin-top: 1.25rem;
}

/* ---------- Motion preferences ---------- */

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

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}