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

:root {
  --primary: #EF0011;
  --primary-dark: #BA000D;
  --primary-glow: rgba(239,0,17,0.3);
  --secondary: #1E293B;
  --bg: #0B1120;
  --bg-light: #111827;
  --bg-card: rgba(17,24,39,0.7);
  --text: #F1F5F9;
  --text-muted: #94A3B8;
  --text-dim: #64748B;
  --border: rgba(51,65,85,0.5);
  --accent: #FF4D5A;
  --danger: #EF4444;
  --danger-bg: rgba(239,68,68,0.06);
  --success: #22C55E;
  --success-bg: rgba(34,197,94,0.06);
  --gold: #FBBF24;
  --radius: 16px;
  --radius-lg: 24px;
  --glass-bg: rgba(255,255,255,0.03);
  --glass-border: rgba(255,255,255,0.08);
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

/* ===== Glass Effect ===== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
}

/* PLACEHOLDER_NAV */

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 16px;
  left: 16px;
  right: 16px;
  z-index: 100;
  background: rgba(11, 17, 32, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  transition: background 0.2s ease-out;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 18px;
  cursor: pointer;
}

.logo-icon {
  width: 18px;
  height: 18px;
  border-radius: 3px;
  object-fit: contain;
}

.hero-claw, .hero-claw-img {
  display: none;
}

.section-claw {
  width: 14px;
  height: 14px;
  margin-right: 4px;
  display: inline-block;
  position: relative;
  top: -2px;
  object-fit: contain;
  border-radius: 3px;
}

.nav-links {
  display: flex;
  gap: 28px;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s ease-out;
  cursor: pointer;
}

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

.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: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform 0.2s ease-out, opacity 0.2s ease-out;
}

.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 120px 24px 60px;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  z-index: 0;
  animation: glowFloat 8s ease-in-out infinite;
}

.hero-glow-1 {
  width: 600px;
  height: 600px;
  background: rgba(239,0,17,0.15);
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
}

.hero-glow-2 {
  width: 400px;
  height: 400px;
  background: rgba(239,0,17,0.08);
  bottom: -100px;
  right: -100px;
  animation-delay: -4s;
}

@keyframes glowFloat {
  0%, 100% { transform: translateX(-50%) scale(1); }
  50% { transform: translateX(-50%) scale(1.15); }
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(51,65,85,0.2) 1px, transparent 1px),
    linear-gradient(90deg, rgba(51,65,85,0.2) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 70% 50% at 50% 50%, black 10%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse 70% 50% at 50% 50%, black 10%, transparent 70%);
  z-index: 0;
}

/* PLACEHOLDER_HERO_CONTENT */

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  border-radius: 100px;
  background: rgba(239,0,17,0.1);
  border: 1px solid rgba(59,130,246,0.25);
  color: var(--accent);
  font-size: 14px;
  margin-bottom: 32px;
}

.hero-badge strong {
  color: var(--primary);
}

.hero-title {
  font-size: clamp(32px, 6vw, 64px);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #fff 0%, var(--accent) 50%, #FF8A80 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(15px, 2vw, 18px);
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 20px;
  line-height: 1.8;
}

.hero-highlight {
  font-size: clamp(16px, 2.2vw, 20px);
  font-weight: 600;
  color: var(--text);
  margin-bottom: 36px;
}

.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-tags {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.tag {
  padding: 6px 14px;
  border-radius: 100px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  font-size: 12px;
  color: var(--text-dim);
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  text-decoration: none;
  font-weight: 600;
  border-radius: var(--radius);
  transition: all 0.2s ease-out;
  cursor: pointer;
  border: none;
  text-align: center;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, #FF4D5A 100%);
  color: #fff;
  box-shadow: 0 4px 24px var(--primary-glow);
}

.btn-primary:hover {
  box-shadow: 0 8px 40px var(--primary-glow);
  transform: translateY(-2px);
}

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

.btn-ghost:hover {
  color: var(--text);
  border-color: var(--text-muted);
  background: rgba(255,255,255,0.03);
}

.btn-lg {
  padding: 14px 36px;
  font-size: 16px;
}

.btn-xl {
  padding: 20px 56px;
  font-size: 20px;
  border-radius: var(--radius-lg);
}

/* ===== Section Common ===== */
.section-title {
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 800;
  text-align: center;
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 17px;
  color: var(--text-muted);
  text-align: center;
  margin-bottom: 56px;
}

/* PLACEHOLDER_STATS_CSS */

/* ===== Stats ===== */
.stats {
  padding: 60px 0 80px;
  position: relative;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.stat-card {
  text-align: center;
  padding: 36px 20px;
  border-radius: var(--radius-lg);
  transition: transform 0.2s ease-out;
}

.stat-card:hover {
  transform: translateY(-4px);
}

.stat-number {
  font-size: clamp(40px, 5vw, 56px);
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-suffix {
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-desc {
  margin-top: 12px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.5;
}

/* ===== Scenes ===== */
.scenes {
  padding: 100px 0;
  position: relative;
}

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

.scene-card {
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: transform 0.25s ease-out, border-color 0.25s ease-out;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.scene-card:hover {
  transform: translateY(-6px);
  border-color: rgba(239,0,17,0.3);
}

.scene-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(239,0,17,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.scene-icon svg {
  width: 26px;
  height: 26px;
  color: var(--primary);
}

.scene-role {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
  color: var(--text);
}

.scene-pain, .scene-gain {
  margin-bottom: 16px;
}

.scene-pain h4, .scene-gain h4 {
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 8px;
}

.scene-pain h4 {
  color: var(--danger);
}

.scene-gain h4 {
  color: var(--success);
}

.scene-pain p, .scene-gain p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

.scene-quote {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--glass-border);
  font-size: 13px;
  color: var(--text-dim);
  font-style: italic;
}

/* PLACEHOLDER_COST_CSS */

/* ===== Cost Compare ===== */
.compare-cost {
  padding: 100px 0;
  background: var(--bg-light);
}

.cost-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.cost-card {
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: transform 0.2s ease-out;
  cursor: pointer;
}

.cost-card:hover {
  transform: translateY(-4px);
}

.cost-label {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 20px;
}

.cost-vs {
  display: flex;
  align-items: center;
  gap: 16px;
}

.cost-old, .cost-new {
  flex: 1;
  text-align: center;
}

.cost-val {
  display: block;
  font-size: 28px;
  font-weight: 800;
  line-height: 1.2;
}

.cost-old .cost-val {
  color: var(--danger);
  text-decoration: line-through;
  text-decoration-color: rgba(239,68,68,0.4);
}

.cost-new .cost-val {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.cost-tag {
  display: block;
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 4px;
}

.cost-arrow {
  flex-shrink: 0;
}

.cost-arrow svg {
  width: 24px;
  height: 24px;
  color: var(--text-dim);
}

/* ===== Comparison ===== */
.comparison {
  padding: 100px 0;
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.compare-card {
  padding: 40px 32px;
  border-radius: var(--radius-lg);
}

.compare-bad {
  background: var(--danger-bg);
  border-color: rgba(239,68,68,0.15);
}

.compare-good {
  background: var(--success-bg);
  border-color: rgba(34,197,94,0.15);
}

.compare-label {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--glass-border);
}

.compare-bad .compare-label { color: var(--danger); }
.compare-good .compare-label { color: var(--success); }

.compare-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 24px;
}

.compare-list li {
  padding-left: 28px;
  position: relative;
  color: var(--text-muted);
  font-size: 15px;
  line-height: 1.5;
}

.compare-list li::before {
  position: absolute;
  left: 0;
  top: 2px;
  content: '';
  width: 18px;
  height: 18px;
}

.compare-bad .compare-list li::before {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23EF4444' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='18' y1='6' x2='6' y2='18'/%3E%3Cline x1='6' y1='6' x2='18' y2='18'/%3E%3C/svg%3E") no-repeat center;
}

.compare-good .compare-list li::before {
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%2322C55E' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E") no-repeat center;
}

.compare-verdict {
  font-weight: 600;
  font-size: 15px;
  padding-top: 16px;
  border-top: 1px solid var(--glass-border);
}

.compare-bad .compare-verdict { color: var(--danger); }
.compare-good .compare-verdict { color: var(--success); }

/* PLACEHOLDER_FEATURES_CSS */

/* ===== Features ===== */
.features {
  padding: 100px 0;
  background: var(--bg-light);
}

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

.feature-card {
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  transition: transform 0.25s ease-out, border-color 0.25s ease-out;
  cursor: pointer;
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(239,0,17,0.3);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(239,0,17,0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
  color: var(--primary);
}

.feature-card h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ===== Testimonials ===== */
.testimonials {
  padding: 100px 0;
}

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

.testimonial-card {
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease-out;
  cursor: pointer;
}

.testimonial-card:hover {
  transform: translateY(-4px);
}

.testimonial-stars {
  display: flex;
  gap: 2px;
  margin-bottom: 16px;
}

.testimonial-stars svg {
  width: 18px;
  height: 18px;
  color: var(--gold);
}

.testimonial-text {
  font-size: 15px;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 24px;
  flex: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid var(--glass-border);
}

.author-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #6366F1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.testimonial-author strong {
  display: block;
  font-size: 14px;
}

.testimonial-author span {
  font-size: 12px;
  color: var(--text-dim);
}

/* PLACEHOLDER_DOWNLOAD_CSS */

/* ===== Download ===== */
.download {
  padding: 100px 0;
  background: var(--bg-light);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.download-glow {
  position: absolute;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: rgba(239,0,17,0.08);
  filter: blur(100px);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: 0;
}

.download .container {
  position: relative;
  z-index: 1;
}

.download-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 48px;
}

.step {
  text-align: center;
}

.step-number {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(239,0,17,0.1);
  border: 2px solid var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 700;
  color: var(--primary);
  margin: 0 auto 12px;
}

.step p {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 500;
}

.step-arrow {
  flex-shrink: 0;
  margin-bottom: 24px;
}

.step-arrow svg {
  width: 28px;
  height: 28px;
  color: var(--text-dim);
}

.download-cta {
  margin-bottom: 16px;
}

.download-urgency {
  margin-top: 16px;
  font-size: 14px;
  color: var(--accent);
}

.download-urgency strong {
  color: var(--primary);
}

.download-note {
  font-size: 13px;
  color: var(--text-dim);
}

/* Pulse animation for CTA */
.pulse {
  animation: pulse 2.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 4px 24px var(--primary-glow); }
  50% { box-shadow: 0 8px 48px rgba(59,130,246,0.5); }
}

/* ===== Contact ===== */
.contact {
  padding: 100px 0;
  text-align: center;
}

.contact-card {
  max-width: 380px;
  margin: 0 auto;
  padding: 44px;
  border-radius: var(--radius-lg);
}

.qrcode-placeholder img {
  max-width: 200px;
  border-radius: 8px;
}

.qrcode-fallback {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  color: var(--text-muted);
  font-size: 13px;
  line-height: 1.5;
}

.qrcode-fallback svg {
  width: 80px;
  height: 80px;
  opacity: 0.3;
}

.contact-note {
  margin-top: 20px;
  font-size: 13px;
  color: var(--text-dim);
}

/* ===== Footer ===== */
.footer {
  padding: 40px 0;
  border-top: 1px solid var(--glass-border);
  text-align: center;
}

.footer-brand {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.footer-copy {
  font-size: 12px;
  color: var(--text-dim);
}

/* ===== Fade-in Animation ===== */
.fade-in {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

@media (prefers-reduced-motion: reduce) {
  .fade-in { opacity: 1; transform: none; transition: none; }
  .hero-glow { animation: none; }
  .pulse { animation: none; }
  .hero-claw-svg { animation: none; }
  html { scroll-behavior: auto; }
}

/* PLACEHOLDER_RESPONSIVE */

/* ===== Responsive ===== */

@media (max-width: 1024px) {
  .features-grid,
  .testimonials-grid,
  .scenes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .navbar {
    top: 8px;
    left: 8px;
    right: 8px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(11, 17, 32, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    margin-top: 8px;
    padding: 16px;
    flex-direction: column;
    gap: 16px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: 100px 16px 50px;
    min-height: auto;
  }

  .hero-title {
    font-size: 30px;
  }

  .hero-subtitle {
    font-size: 14px;
  }

  .hero-highlight {
    font-size: 16px;
  }

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

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .stat-card {
    padding: 24px 12px;
  }

  .scenes-grid,
  .features-grid,
  .testimonials-grid,
  .cost-grid {
    grid-template-columns: 1fr;
  }

  .comparison-grid {
    grid-template-columns: 1fr;
  }

  .download-steps {
    flex-direction: column;
    gap: 16px;
  }

  .step-arrow {
    transform: rotate(90deg);
    margin-bottom: 0;
  }

  .btn-xl {
    padding: 16px 36px;
    font-size: 17px;
  }

  .section-title {
    font-size: 24px;
  }

  .section-subtitle {
    font-size: 15px;
    margin-bottom: 40px;
  }

  .compare-card {
    padding: 28px 20px;
  }
}

@media (max-width: 375px) {
  .hero-title {
    font-size: 26px;
  }

  .nav-logo span {
    font-size: 15px;
  }

  .stat-number {
    font-size: 36px;
  }

  .stat-suffix {
    font-size: 22px;
  }
}