/* ============================================
   传奇扑克 — Luxury Art Deco Casino Theme
   ============================================ */

:root {
  --bg-deep: #0c0608;
  --bg-wine: #1a0a10;
  --bg-card: #140810;
  --bg-cream: #f5efe6;
  --bg-cream-dark: #e8dfd3;
  --text-light: #f5efe6;
  --text-muted: rgba(245, 239, 230, 0.55);
  --text-dark: #1a0a10;
  --text-dark-muted: #5c4a50;
  --gold: #c9a84c;
  --gold-light: #e8d5a0;
  --gold-dark: #9a7b2f;
  --red-suit: #c0392b;
  --border-gold: rgba(201, 168, 76, 0.35);
  --border-subtle: rgba(201, 168, 76, 0.12);
  --font-display: "Playfair Display", "Noto Serif SC", Georgia, serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --nav-height: 72px;
  --section-padding: clamp(80px, 10vw, 140px);
  --max-width: 1180px;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  background: var(--bg-deep);
  color: var(--text-light);
  line-height: 1.7;
  overflow-x: hidden;
}

a { text-decoration: none; color: inherit; }
ul { list-style: none; }

/* Film grain overlay */
.grain {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  transition: background 0.5s var(--ease), border-color 0.5s;
  border-bottom: 1px solid transparent;
}

.nav.scrolled {
  background: rgba(12, 6, 8, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom-color: var(--border-subtle);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 32px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-gold);
  border-radius: 50%;
  font-size: 18px;
  color: var(--gold);
  background: rgba(201, 168, 76, 0.06);
}

.logo-text {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--gold-light);
}

.nav-links {
  display: flex;
  gap: 40px;
}

.nav-links a {
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  transition: color 0.3s;
  text-transform: uppercase;
}

.nav-links a:hover {
  color: var(--gold);
}

.nav-cta {
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 12px 28px;
  border: 1px solid var(--gold);
  color: var(--gold);
  transition: all 0.35s var(--ease);
}

.nav-cta:hover {
  background: var(--gold);
  color: var(--bg-deep);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--gold);
  transition: transform 0.3s;
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 16px 36px;
  transition: all 0.35s var(--ease);
  cursor: pointer;
}

.btn-gold {
  background: linear-gradient(135deg, var(--gold) 0%, var(--gold-dark) 100%);
  color: var(--bg-deep);
  border: none;
  box-shadow: 0 4px 24px rgba(201, 168, 76, 0.25);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(201, 168, 76, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--gold-light);
  border: 1px solid var(--border-gold);
}

.btn-outline:hover {
  border-color: var(--gold);
  background: rgba(201, 168, 76, 0.08);
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--nav-height) + 40px) 32px 60px;
  overflow: hidden;
  background:
    radial-gradient(ellipse 80% 60% at 70% 40%, rgba(90, 20, 40, 0.35), transparent),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(201, 168, 76, 0.06), transparent),
    linear-gradient(180deg, var(--bg-wine) 0%, var(--bg-deep) 100%);
}

.hero-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.04;
  background-image:
    repeating-linear-gradient(
      45deg,
      var(--gold) 0,
      var(--gold) 1px,
      transparent 1px,
      transparent 24px
    ),
    repeating-linear-gradient(
      -45deg,
      var(--gold) 0,
      var(--gold) 1px,
      transparent 1px,
      transparent 24px
    );
}

.hero-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 40%, var(--bg-deep) 100%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 16px;
  font-size: 11px;
  letter-spacing: 0.25em;
  color: var(--gold);
  margin-bottom: 28px;
}

.badge-line {
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold));
}

.badge-line:last-child {
  background: linear-gradient(90deg, var(--gold), transparent);
}

.hero-title {
  margin-bottom: 24px;
}

.title-line {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(52px, 8vw, 88px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: 0.06em;
  color: var(--text-light);
}

.title-accent {
  background: linear-gradient(135deg, var(--gold-light) 0%, var(--gold) 50%, var(--gold-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-style: italic;
}

.hero-subtitle {
  font-size: 16px;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 36px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 24px;
}

.hero-stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 600;
  color: var(--gold-light);
  letter-spacing: 0.02em;
}

.hero-stat span {
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.hero-stat-divider {
  width: 1px;
  height: 36px;
  background: var(--border-gold);
}

/* Hero Visual — Card Fan */
.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 420px;
}

.hero-glow-ring {
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  border: 1px solid rgba(201, 168, 76, 0.15);
  animation: ringPulse 4s ease-in-out infinite;
}

.hero-glow-ring::before {
  content: "";
  position: absolute;
  inset: -40px;
  border-radius: 50%;
  border: 1px solid rgba(201, 168, 76, 0.06);
}

@keyframes ringPulse {
  0%, 100% { transform: scale(1); opacity: 0.6; }
  50% { transform: scale(1.05); opacity: 1; }
}

.card-fan {
  position: relative;
  width: 280px;
  height: 360px;
  z-index: 2;
}

.fan-card {
  position: absolute;
  width: 140px;
  height: 200px;
  background: linear-gradient(160deg, #fff 0%, #f0ebe3 100%);
  border-radius: 10px;
  box-shadow:
    0 0 0 1px rgba(201, 168, 76, 0.3),
    0 20px 50px rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: transform 0.5s var(--ease-out);
  left: 50%;
  bottom: 20px;
  margin-left: -70px;
  transform-origin: bottom center;
}

.card-rank {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 700;
  color: var(--text-dark);
}

.card-suit {
  font-size: 28px;
}

.card-suit.spade, .card-suit.club { color: var(--text-dark); }
.card-suit.heart, .card-suit.diamond { color: var(--red-suit); }

.fc-1 { transform: rotate(-18deg) translateX(-30px); z-index: 1; }
.fc-2 { transform: rotate(-6deg) translateX(-10px); z-index: 2; }
.fc-3 { transform: rotate(6deg) translateX(10px); z-index: 3; }
.fc-4 { transform: rotate(18deg) translateX(30px); z-index: 4; }

.hero-visual:hover .fc-1 { transform: rotate(-24deg) translateX(-40px) translateY(-8px); }
.hero-visual:hover .fc-2 { transform: rotate(-8deg) translateX(-14px) translateY(-12px); }
.hero-visual:hover .fc-3 { transform: rotate(8deg) translateX(14px) translateY(-12px); }
.hero-visual:hover .fc-4 { transform: rotate(24deg) translateX(40px) translateY(-8px); }

.chip-stack {
  position: absolute;
  bottom: 0;
  right: 10%;
  z-index: 3;
}

.chip {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 3px dashed var(--gold);
  position: absolute;
  box-shadow: inset 0 0 0 4px rgba(201, 168, 76, 0.2), 0 4px 16px rgba(0,0,0,0.4);
}

.chip-1 {
  background: linear-gradient(135deg, #8b0000, #5c0000);
  bottom: 0;
  right: 0;
}

.chip-2 {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  bottom: 12px;
  right: 8px;
}

.chip-3 {
  background: linear-gradient(135deg, #1a3a1a, #0d200d);
  bottom: 24px;
  right: 16px;
}

.deco-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  color: var(--gold);
  font-size: 8px;
  opacity: 0.5;
  letter-spacing: 0.5em;
}

.hero-divider {
  position: relative;
  z-index: 2;
  margin-top: 40px;
}

/* ---- Animations ---- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

.delay-1 { transition-delay: 0.12s; }
.delay-2 { transition-delay: 0.24s; }
.delay-3 { transition-delay: 0.36s; }
.delay-4 { transition-delay: 0.48s; }

/* ---- Stats ---- */
.stats {
  padding: 56px 32px;
  background: var(--bg-wine);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
}

.stats-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: clamp(40px, 8vw, 100px);
  flex-wrap: wrap;
}

.stat-item { text-align: center; }

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 700;
  color: var(--gold-light);
}

.stat-suffix {
  font-family: var(--font-display);
  font-size: clamp(24px, 3vw, 32px);
  color: var(--gold);
}

.stat-label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 8px;
}

.stat-desc {
  display: block;
  font-size: 12px;
  font-weight: 300;
  color: var(--text-muted);
  opacity: 0.7;
  margin-top: 6px;
  letter-spacing: 0.02em;
  text-transform: none;
  max-width: 160px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.5;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--border-gold);
}

/* ---- Section Headers ---- */
.section-eyebrow {
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--gold);
  margin-bottom: 16px;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 64px;
}

.section-header h2,
.experience-header h2,
.download-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(36px, 5vw, 52px);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 12px;
}

.section-desc,
.download-desc {
  font-size: 15px;
  font-weight: 300;
  color: var(--text-muted);
}

/* ---- Features ---- */
.features {
  padding: var(--section-padding) 32px;
  background: var(--bg-deep);
}

.features-grid {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.section-header {
  max-width: 720px;
}

.section-desc br {
  display: inline;
}

.feature-card {
  position: relative;
  padding: 40px 32px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  transition: transform 0.4s var(--ease-out), border-color 0.4s;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-gold);
}

.feature-card.featured {
  background: linear-gradient(160deg, rgba(90, 20, 40, 0.3) 0%, var(--bg-card) 100%);
  border-color: var(--border-gold);
}

.feature-card-icon {
  width: 48px;
  height: 48px;
  color: var(--gold);
  margin-bottom: 24px;
}

.feature-tag {
  display: block;
  font-size: 10px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 12px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.feature-card p {
  font-size: 14px;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  font-size: 13px;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.6;
  padding: 6px 0 6px 16px;
  position: relative;
  border-top: 1px solid var(--border-subtle);
}

.feature-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--gold);
  opacity: 0.6;
}

.feature-card-deco {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.feature-card:hover .feature-card-deco {
  opacity: 1;
}

/* ---- Experience ---- */
.experience {
  padding: var(--section-padding) 32px;
  background: var(--bg-cream);
  color: var(--text-dark);
}

.experience-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.experience-header {
  text-align: center;
  margin-bottom: 64px;
}

.experience-header .section-eyebrow {
  color: var(--gold-dark);
}

.experience-header h2 {
  color: var(--text-dark);
}

.experience-header .section-desc {
  color: var(--text-dark-muted);
}

.experience-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--bg-cream-dark);
  border: 1px solid var(--bg-cream-dark);
}

.exp-card {
  background: var(--bg-cream);
  padding: 40px 28px;
  transition: background 0.35s;
}

.exp-card:hover {
  background: #fff;
}

.exp-number {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 700;
  color: var(--gold);
  opacity: 0.4;
  margin-bottom: 16px;
}

.exp-card h4 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}

.exp-card p {
  font-size: 13px;
  color: var(--text-dark-muted);
  line-height: 1.8;
}

/* ---- About ---- */
.about {
  padding: var(--section-padding) 32px;
  background: var(--bg-wine);
  border-top: 1px solid var(--border-subtle);
}

.about-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: start;
}

.about-text h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 4.5vw, 48px);
  font-weight: 600;
  letter-spacing: 0.04em;
  line-height: 1.2;
  margin-bottom: 24px;
}

.about-lead {
  font-size: 17px;
  font-weight: 400;
  color: var(--text-light);
  line-height: 1.9;
  margin-bottom: 20px;
}

.about-text p {
  font-size: 15px;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.9;
  margin-bottom: 16px;
}

.about-text strong {
  color: var(--gold-light);
  font-weight: 500;
}

.about-highlights {
  list-style: none;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border-subtle);
}

.about-highlights li {
  font-size: 14px;
  color: var(--text-muted);
  padding: 8px 0;
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.highlight-mark {
  color: var(--gold);
  font-size: 8px;
  flex-shrink: 0;
}

.about-quote blockquote {
  border: 1px solid var(--border-gold);
  padding: 40px 32px;
  background: rgba(201, 168, 76, 0.04);
  position: relative;
}

.about-quote blockquote::before {
  content: "\201C";
  font-family: var(--font-display);
  font-size: 72px;
  color: var(--gold);
  opacity: 0.2;
  position: absolute;
  top: 8px;
  left: 24px;
  line-height: 1;
}

.about-quote blockquote p {
  font-family: var(--font-display);
  font-size: 18px;
  font-style: italic;
  line-height: 1.8;
  color: var(--text-light);
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}

.about-quote footer strong {
  display: block;
  font-size: 15px;
  color: var(--gold-light);
  margin-bottom: 4px;
}

.about-quote footer span {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

/* ---- App Showcase ---- */
.showcase {
  padding: var(--section-padding) 0;
  background:
    radial-gradient(ellipse 60% 40% at 50% 0%, rgba(201, 168, 76, 0.06), transparent),
    var(--bg-wine);
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  overflow: hidden;
}

.showcase-inner {
  max-width: 100%;
}

.showcase-inner .section-header {
  padding: 0 32px;
  margin-bottom: 56px;
}

.showcase-gallery {
  position: relative;
}

.showcase-track {
  display: flex;
  gap: 32px;
  padding: 20px 32px 40px;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.showcase-track::-webkit-scrollbar {
  display: none;
}

.phone-item {
  flex: 0 0 auto;
  scroll-snap-align: center;
  text-align: center;
  transition: transform 0.4s var(--ease-out), opacity 0.4s;
}

.phone-item.featured-phone {
  transform: scale(1.05);
}

.phone-mockup {
  position: relative;
  width: 220px;
  height: 448px;
  background: linear-gradient(160deg, #2a2024, #140810);
  border-radius: 36px;
  padding: 10px;
  box-shadow:
    0 0 0 1px rgba(201, 168, 76, 0.25),
    0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 40px rgba(201, 168, 76, 0.05);
  margin: 0 auto 20px;
  transition: box-shadow 0.4s, transform 0.4s;
}

.phone-item:hover .phone-mockup,
.phone-item.featured-phone .phone-mockup {
  box-shadow:
    0 0 0 1px rgba(201, 168, 76, 0.5),
    0 24px 70px rgba(0, 0, 0, 0.6),
    0 0 60px rgba(201, 168, 76, 0.1);
}

.phone-notch {
  position: absolute;
  top: 10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 24px;
  background: #0c0608;
  border-radius: 0 0 14px 14px;
  z-index: 2;
}

.phone-mockup img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 28px;
  display: block;
}

.phone-item figcaption {
  max-width: 220px;
  margin: 0 auto;
}

.phone-item figcaption strong {
  display: block;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  color: var(--gold-light);
  margin-bottom: 6px;
  letter-spacing: 0.04em;
}

.phone-item figcaption span {
  font-size: 12px;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.6;
}

.showcase-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  padding: 0 32px 16px;
}

.showcase-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-gold);
  background: rgba(201, 168, 76, 0.06);
  color: var(--gold);
  font-size: 16px;
  cursor: pointer;
  transition: all 0.3s var(--ease);
  display: flex;
  align-items: center;
  justify-content: center;
}

.showcase-btn:hover {
  background: var(--gold);
  color: var(--bg-deep);
}

.showcase-dots {
  display: flex;
  gap: 10px;
}

.showcase-dots .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 1px solid var(--border-gold);
  background: transparent;
  cursor: pointer;
  padding: 0;
  transition: all 0.3s;
}

.showcase-dots .dot.active {
  background: var(--gold);
  transform: scale(1.2);
}

/* ---- Game Modes ---- */
.modes {
  padding: var(--section-padding) 32px;
  background: var(--bg-deep);
}

.modes-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.modes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.mode-card {
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  transition: border-color 0.35s, transform 0.35s;
}

.mode-card:hover {
  border-color: var(--border-gold);
  transform: translateY(-4px);
}

.mode-icon {
  font-size: 28px;
  margin-bottom: 16px;
  color: var(--gold);
}

.mode-card h3 {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 0.02em;
}

.mode-intro {
  font-size: 14px;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
}

.mode-details {
  list-style: none;
  padding-top: 16px;
  border-top: 1px solid var(--border-subtle);
}

.mode-details li {
  font-size: 12px;
  color: var(--text-muted);
  padding: 5px 0;
  padding-left: 14px;
  position: relative;
  line-height: 1.6;
}

.mode-details li::before {
  content: "·";
  position: absolute;
  left: 0;
  color: var(--gold);
}

/* ---- Testimonials ---- */
.testimonials {
  padding: var(--section-padding) 32px;
  background: var(--bg-wine);
  border-top: 1px solid var(--border-subtle);
}

.testimonials-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  padding: 32px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 220px;
}

.testimonial-card p {
  font-size: 14px;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.85;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-card footer strong {
  display: block;
  font-size: 14px;
  color: var(--gold-light);
  margin-bottom: 4px;
}

.testimonial-card footer span {
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

/* ---- Steps ---- */
.steps {
  padding: var(--section-padding) 32px;
  background: var(--bg-deep);
}

.steps-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.steps-grid {
  display: flex;
  align-items: stretch;
  justify-content: center;
  gap: 16px;
}

.step-card {
  flex: 1;
  max-width: 320px;
  padding: 36px 28px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  text-align: center;
}

.step-num {
  font-family: var(--font-display);
  font-size: 40px;
  font-weight: 700;
  color: var(--gold);
  opacity: 0.35;
  margin-bottom: 16px;
}

.step-card h4 {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: 0.04em;
}

.step-card p {
  font-size: 13px;
  font-weight: 300;
  color: var(--text-muted);
  line-height: 1.8;
  text-align: left;
}

.step-arrow {
  display: flex;
  align-items: center;
  font-size: 24px;
  color: var(--gold);
  opacity: 0.4;
  flex-shrink: 0;
}

/* ---- FAQ ---- */
.faq {
  padding: var(--section-padding) 32px;
  background: var(--bg-cream);
  color: var(--text-dark);
}

.faq-inner {
  max-width: 760px;
  margin: 0 auto;
}

.faq .section-eyebrow {
  color: var(--gold-dark);
}

.faq .section-header h2 {
  color: var(--text-dark);
}

.faq .section-desc {
  color: var(--text-dark-muted);
}

.faq-list {
  margin-top: 48px;
}

.faq-item {
  border-bottom: 1px solid var(--bg-cream-dark);
}

.faq-item summary {
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 600;
  padding: 24px 0;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  letter-spacing: 0.02em;
  color: var(--text-dark);
  transition: color 0.3s;
}

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

.faq-item summary::after {
  content: "+";
  font-size: 20px;
  font-weight: 300;
  color: var(--gold-dark);
  transition: transform 0.3s;
  flex-shrink: 0;
  margin-left: 16px;
}

.faq-item[open] summary::after {
  transform: rotate(45deg);
}

.faq-item summary:hover {
  color: var(--gold-dark);
}

.faq-item p {
  font-size: 14px;
  font-weight: 300;
  color: var(--text-dark-muted);
  line-height: 1.85;
  padding-bottom: 24px;
}

/* ---- Download ---- */
.download {
  padding: var(--section-padding) 32px;
  background:
    radial-gradient(ellipse 70% 50% at 50% 100%, rgba(90, 20, 40, 0.25), transparent),
    var(--bg-wine);
}

.download-frame {
  max-width: 720px;
  margin: 0 auto;
  border: 1px solid var(--border-gold);
  padding: 1px;
  background: linear-gradient(160deg, rgba(201,168,76,0.2), transparent);
}

.download-inner {
  background: var(--bg-card);
  padding: clamp(48px, 8vw, 72px) clamp(32px, 6vw, 56px);
  text-align: center;
}

.download-inner h2 {
  margin-bottom: 12px;
}

.download-desc {
  margin-bottom: 40px;
}

.download-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.store-btn {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  max-width: 300px;
  padding: 14px 24px;
  background: rgba(201, 168, 76, 0.06);
  border: 1px solid var(--border-subtle);
  transition: all 0.35s var(--ease);
  text-align: left;
}

.store-btn:hover {
  border-color: var(--border-gold);
  background: rgba(201, 168, 76, 0.12);
  transform: translateX(4px);
}

.store-label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.store-name {
  display: block;
  font-size: 16px;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.download-note {
  margin-top: 28px;
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 0.05em;
}

.download-bonus {
  margin-top: 12px;
  font-size: 14px;
  color: var(--gold-light);
  letter-spacing: 0.03em;
}

.footer-desc {
  max-width: 320px;
  line-height: 1.8;
}

/* ---- Footer ---- */
.footer {
  padding: 64px 32px 32px;
  background: var(--bg-deep);
  border-top: 1px solid var(--border-subtle);
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  gap: 60px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.footer-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 16px;
  font-weight: 300;
}

.footer-links {
  display: flex;
  gap: 64px;
  flex-wrap: wrap;
}

.footer-col h5 {
  font-size: 10px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 20px;
}

.footer-col a {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 12px;
  transition: color 0.3s;
}

.footer-col a:hover {
  color: var(--gold-light);
}

.footer-divider {
  margin-bottom: 32px;
}

.footer-bottom p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.8;
  letter-spacing: 0.03em;
}

.footer-disclaimer {
  margin-top: 4px;
  opacity: 0.6;
}

/* ---- Responsive ---- */
@media (max-width: 960px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions,
  .hero-stats {
    justify-content: center;
  }

  .hero-visual {
    min-height: 340px;
  }

  .features-grid,
  .modes-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
  }

  .about-inner {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .phone-item.featured-phone {
    transform: none;
  }

  .phone-mockup {
    width: 200px;
    height: 408px;
  }

  .experience-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps-grid {
    flex-direction: column;
    align-items: center;
  }

  .step-arrow {
    transform: rotate(90deg);
  }

  .step-card {
    max-width: 100%;
  }

  .stats-inner {
    gap: 32px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }

  .nav-cta { display: none; }
  .nav-toggle { display: flex; }

  .nav.menu-open .nav-links {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(12, 6, 8, 0.96);
    backdrop-filter: blur(16px);
    padding: 32px;
    gap: 24px;
    border-bottom: 1px solid var(--border-subtle);
  }

  .stat-divider { display: none; }

  .footer-top {
    flex-direction: column;
    gap: 40px;
  }

  .footer-links {
    gap: 32px;
  }
}

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

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .hero-stats {
    flex-wrap: wrap;
  }

  .hero-stat-divider { display: none; }
}


/* ===== Variant 064 | about-flip | sunset ===== */
:root {
  --bg-deep: #09261f;
  --bg-wine: #125140;
  --bg-card: #0e3127;
  --bg-cream: #e7e9ed;
  --bg-cream-dark: #d7d9df;
  --text-light: #e6e7e9;
  --text-muted: rgba(230, 231, 233, 0.55);
  --text-dark: #0c261f;
  --text-dark-muted: rgba(12, 38, 31, 0.55);
  --gold: #4c67bc;
  --gold-light: #aeb7d5;
  --gold-dark: #2c3e77;
  --red-suit: #c71d94;
  --border-gold: rgba(76, 103, 188, 0.28200000000000003);
  --border-subtle: rgba(76, 103, 188, 0.112);
  --font-display: "Noto Sans SC", sans-serif, Georgia, serif;
  --font-body: "Ma Shan Zheng", cursive, "PingFang SC", "Microsoft YaHei", sans-serif;
  --nav-height: 80px;
  --section-padding: clamp(80px, 10vw, 140px);
  --max-width: 1180px;
  --radius-sm: 8px;
  --radius-lg: 24px;
}

body.v-64 {
  letter-spacing: -0.01em;
}

@media (min-width: 961px) {
  body.v-64 .about-inner { direction: rtl; }
  body.v-64 .about-inner > * { direction: ltr; }
}
body.v-64 .section-eyebrow { letter-spacing: 0.24em; }
body.v-64 .hero { min-height: 90vh; }
body.v-64 .feature-card:hover { transform: translateY(-8px); }
body.v-64 .hero-pattern { opacity: 0.071; }
body.v-64 .experience { background: #e7e9ed !important; }