/* ===== CSS VARIABLES ===== */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #0f0f1a;
  --bg-card: rgba(255, 255, 255, 0.04);
  --bg-card-hover: rgba(255, 255, 255, 0.08);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(99, 102, 241, 0.5);
  --text-primary: #f0f0ff;
  --text-secondary: #a0a0c0;
  --text-muted: #606080;
  --accent: #6366f1;
  --accent-2: #8b5cf6;
  --accent-3: #06b6d4;
  --gradient: linear-gradient(135deg, #6366f1, #8b5cf6, #06b6d4);
  --glass-bg: rgba(255, 255, 255, 0.05);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-blur: blur(16px);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.5);
  --radius: 16px;
  --radius-sm: 8px;
  --radius-lg: 24px;
  --nav-height: 64px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-primary: #f8f8ff;
  --bg-secondary: #f0f0fa;
  --bg-card: rgba(255, 255, 255, 0.7);
  --bg-card-hover: rgba(255, 255, 255, 0.9);
  --border-color: rgba(0, 0, 0, 0.08);
  --border-hover: rgba(99, 102, 241, 0.4);
  --text-primary: #1a1a2e;
  --text-secondary: #4a4a6a;
  --text-muted: #8a8aaa;
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(0, 0, 0, 0.08);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.15);
}

/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background var(--transition), color var(--transition);
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== PLACEHOLDER ===== */
.img-placeholder {
  background: var(--bg-card);
  border: 2px dashed var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 0.8rem;
  text-align: center;
  padding: 16px;
  min-height: 120px;
  transition: border-color var(--transition);
}

.img-placeholder:hover { border-color: var(--accent); }

/* ===== GLASS CARD ===== */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-hover);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
}
.btn-primary:hover { opacity: 0.9; transform: translateY(-2px); box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5); }

.btn-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
}
.btn-glass:hover { background: var(--bg-card-hover); border-color: var(--accent); }

.btn-ghost {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn-lg { padding: 14px 28px; font-size: 1rem; border-radius: var(--radius-sm); }
.btn-sm { padding: 7px 14px; font-size: 0.82rem; }

/* ===== NAVBAR ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(10, 10, 15, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  transition: background var(--transition), border-color var(--transition);
}

[data-theme="light"] .navbar {
  background: rgba(248, 248, 255, 0.8);
}

.nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.logo-placeholder {
  width: 36px;
  height: 36px;
  min-height: unset;
  font-size: 0.6rem;
  border-radius: 8px;
  padding: 4px;
}

.nav-logo-img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
}

.footer-logo-img {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
}

.logo-text {
  font-size: 1.2rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1;
}

.nav-links a {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--text-secondary);
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover { color: var(--text-primary); background: var(--bg-card); }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.theme-toggle {
  width: 36px; height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  transition: all var(--transition);
}
.theme-toggle:hover { border-color: var(--accent); }

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  margin-left: auto;
}
.nav-toggle span {
  display: block;
  width: 22px; height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  padding-top: var(--nav-height);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(99,102,241,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(99,102,241,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  pointer-events: none;
}

.hero-orbs { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
  animation: float 8s ease-in-out infinite;
}
.orb-1 { width: 500px; height: 500px; background: radial-gradient(circle, #6366f1, transparent); top: -100px; right: -100px; }
.orb-2 { width: 400px; height: 400px; background: radial-gradient(circle, #8b5cf6, transparent); bottom: -50px; left: -100px; animation-delay: -3s; }
.orb-3 { width: 300px; height: 300px; background: radial-gradient(circle, #06b6d4, transparent); top: 40%; left: 40%; animation-delay: -6s; }

@keyframes float {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-30px) scale(1.05); }
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  padding-top: 60px;
  padding-bottom: 80px;
  position: relative;
  z-index: 1;
}

.hero-content { display: flex; flex-direction: column; gap: 20px; }

.glass-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 100px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  font-size: 0.82rem;
  color: var(--text-secondary);
  width: fit-content;
  backdrop-filter: var(--glass-blur);
}

.badge-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 8px #22c55e;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.hero-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.hero-tags { display: flex; flex-wrap: wrap; gap: 8px; }

.glass-tag {
  padding: 5px 12px;
  border-radius: 100px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  font-size: 0.8rem;
  color: var(--text-secondary);
  backdrop-filter: var(--glass-blur);
}

.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }

.hero-visual { position: relative; }

.hero-img {
  width: 100%;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  display: block;
}

.hero-img-placeholder {
  min-height: 400px;
  border-radius: var(--radius-lg);
  font-size: 0.9rem;
}

/* ===== SECTIONS ===== */
.section {
  padding: 100px 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 12px;
  padding: 4px 12px;
  border-radius: 100px;
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.section-title {
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-sub {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* ===== VIDEO ===== */
.video-wrapper {
  max-width: 900px;
  margin: 0 auto;
  overflow: hidden;
}

.video-placeholder {
  min-height: 480px;
  border-radius: var(--radius);
  position: relative;
  font-size: 1rem;
  gap: 16px;
  flex-direction: column;
}

.play-btn {
  width: 72px; height: 72px;
  border-radius: 50%;
  background: var(--gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #fff;
  box-shadow: 0 8px 30px rgba(99, 102, 241, 0.5);
  cursor: pointer;
  transition: transform var(--transition);
}
.play-btn:hover { transform: scale(1.1); }

/* ===== FEATURES GRID ===== */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.feature-card.card-large {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  align-items: center;
}

.card-content { display: flex; flex-direction: column; gap: 12px; }
.card-visual .img-placeholder { min-height: 200px; height: 100%; }

.card-icon { font-size: 2rem; }

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
}

.feature-card p {
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.feature-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.feature-img {
  width: 100%;
  border-radius: var(--radius-sm);
  display: block;
}

/* ===== MORE FEATURES ===== */
.more-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.more-card {
  padding: 20px 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.more-icon { font-size: 1.8rem; flex-shrink: 0; }

.more-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.more-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* ===== ARCH ===== */
.arch-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.arch-card {
  padding: 28px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.arch-logo-placeholder {
  width: 80px; height: 80px;
  min-height: unset;
  border-radius: var(--radius-sm);
  font-size: 0.65rem;
}

.arch-logo-icon {
  width: 72px;
  height: 72px;
  border: 1.5px solid var(--border-color);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

.arch-logo-icon svg {
  width: 36px;
  height: 36px;
}

.arch-card h3 { font-size: 1rem; font-weight: 700; }

.arch-role {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: rgba(99, 102, 241, 0.1);
  padding: 2px 10px;
  border-radius: 100px;
}

.arch-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ===== CODE BLOCKS ===== */
.start-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.code-block {
  overflow: hidden;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border-color);
  background: rgba(0,0,0,0.2);
}

.code-title {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.copy-btn {
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
.copy-btn.copied { border-color: #22c55e; color: #22c55e; }

pre {
  padding: 20px;
  overflow-x: auto;
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 0.82rem;
  line-height: 1.8;
  color: #e2e8f0;
  background: transparent;
}

[data-theme="light"] pre { color: #1e293b; }

code .c { color: #64748b; font-style: italic; }

/* ===== ECOSYSTEM ===== */
.eco-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.eco-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.eco-img {
  min-height: 160px;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  border-bottom: 1px solid var(--border-color);
}

.eco-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px 0;
  border-bottom: 1px solid var(--border-color);
  color: var(--accent);
}

.eco-icon-wrap svg {
  width: 52px;
  height: 52px;
}

.eco-info {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.eco-info h4 { font-size: 1rem; font-weight: 700; }
.eco-info p { font-size: 0.85rem; color: var(--text-secondary); }

.eco-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 100px;
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent);
  border: 1px solid rgba(99, 102, 241, 0.2);
  width: fit-content;
}

/* ===== DOWNLOAD ===== */
.download-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.download-card {
  padding: 32px 24px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.download-card.featured {
  border-color: rgba(99, 102, 241, 0.4);
  background: rgba(99, 102, 241, 0.05);
  position: relative;
}

.download-card.featured::before {
  content: '推荐';
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 12px;
  border-radius: 100px;
}

.os-logo {
  width: 72px; height: 72px;
  min-height: unset;
  border-radius: var(--radius-sm);
  font-size: 0.6rem;
}

.os-logo-emoji {
  font-size: 3.5rem;
  line-height: 1;
}

.os-logo-icon {
  width: 72px;
  height: 72px;
  border: 1.5px solid var(--border-color);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
}

.os-logo-icon svg {
  width: 40px;
  height: 40px;
}

.download-card h3 { font-size: 1.1rem; font-weight: 700; }

.download-version {
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 600;
  background: rgba(99, 102, 241, 0.1);
  padding: 2px 10px;
  border-radius: 100px;
}

.mac-warning {
  margin-top: 12px;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  background: rgba(234, 179, 8, 0.08);
  border: 1px solid rgba(234, 179, 8, 0.25);
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.mac-warning p {
  font-size: 0.78rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.mac-warning-title {
  font-weight: 700;
  color: #ca8a04 !important;
}

.mac-warning-tip {
  color: var(--text-muted) !important;
  font-style: italic;
}

.mac-warning code {
  display: block;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.72rem;
  padding: 8px 10px;
  border-radius: 6px;
  background: rgba(0, 0, 0, 0.15);
  color: var(--text-primary);
  word-break: break-all;
}

[data-theme="light"] .mac-warning code {
  background: rgba(0, 0, 0, 0.06);
}

.download-links {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

/* ===== FOOTER ===== */
.footer {
  border-top: 1px solid var(--border-color);
  padding-top: 60px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 60px;
  padding-bottom: 40px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-logo {
  width: 40px; height: 40px;
  min-height: unset;
  border-radius: 8px;
  font-size: 0.6rem;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-col h5 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.footer-col a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .arch-grid { grid-template-columns: repeat(2, 1fr); }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .feature-card.card-large { grid-column: span 2; }
}

@media (max-width: 768px) {
  .nav-links, .nav-actions .btn { display: none; }
  .nav-toggle { display: flex; }

  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    gap: 4px;
    z-index: 999;
  }

  .nav-actions { gap: 6px; }
  .nav-actions .btn-ghost { display: none; }

  .hero-inner { grid-template-columns: 1fr; gap: 40px; padding-top: 40px; }
  .hero-visual { order: -1; }
  .hero-img-placeholder { min-height: 240px; }

  .features-grid { grid-template-columns: 1fr; }
  .feature-card.card-large { grid-column: span 1; grid-template-columns: 1fr; }

  .more-grid { grid-template-columns: repeat(2, 1fr); }
  .arch-grid { grid-template-columns: repeat(2, 1fr); }
  .start-grid { grid-template-columns: 1fr; }
  .eco-grid { grid-template-columns: 1fr; }
  .download-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }

  .section { padding: 60px 0; }
}

@media (max-width: 480px) {
  .more-grid { grid-template-columns: 1fr; }
  .arch-grid { grid-template-columns: 1fr; }
  .footer-links { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { width: 100%; justify-content: center; }
}

/* ===== SCROLL REVEAL ===== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== ACTIVE NAV ===== */
.nav-links a.active {
  color: var(--accent);
  background: rgba(99, 102, 241, 0.1);
}

/* ===== SECTION ALTERNATING BG ===== */
.video-section,
.arch-section,
.download-section {
  background: var(--bg-secondary);
}

/* ===== DEPLOY SECTION ===== */
.deploy-section { display: flex; flex-direction: column; }

/* ===== QR SECTION ===== */
.qr-section { background: var(--bg-secondary); }

.qr-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 48px 56px;
}

.qr-text h2 { font-size: 1.8rem; font-weight: 800; margin-bottom: 12px; }
.qr-text p { font-size: 0.95rem; color: var(--text-secondary); max-width: 420px; line-height: 1.7; }

.qr-img-wrap { display: flex; flex-direction: column; align-items: center; gap: 10px; flex-shrink: 0; }

.qr-img {
  width: 160px;
  height: 160px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  object-fit: cover;
}

.qr-tip { font-size: 0.8rem; color: var(--text-muted); }

/* ===== FLOAT BUTTON ===== */
.float-btn {
  position: fixed;
  right: 24px;
  bottom: 40px;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: var(--gradient);
  color: #fff;
  border-radius: 16px;
  padding: 12px 14px;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4);
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
}

.float-btn:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(99, 102, 241, 0.5);
}

.float-btn svg { width: 24px; height: 24px; }

.float-label { font-size: 0.7rem; font-weight: 600; white-space: nowrap; }

@media (max-width: 768px) {
  .qr-inner { flex-direction: column; padding: 32px 24px; text-align: center; }
  .qr-text p { max-width: 100%; }
  .float-btn { right: 16px; bottom: 24px; }
}