/* ==========================================================================
   1. Design System
   ========================================================================== */
:root {
  --font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'HarmonyOS Sans SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
  --color-primary: #32B39D;
  --color-primary-hover: #279A86;
  --color-primary-light: rgba(50, 179, 157, 0.1);
  --color-primary-glow: rgba(50, 179, 157, 0.28);
  --color-orange: #E88C52;
  --color-orange-hover: #D67A41;
  --color-blue: #5C81A6;
  --color-purple: #6B72E1;
  --color-red: #EF6363;
  --color-dark: #1E293B;
  --color-slate: #334155;
  --color-muted: #64748B;
  --color-bg: #F5F9F8;
  --glass-bg: rgba(255, 255, 255, 0.82);
  --glass-border: rgba(255, 255, 255, 0.9);
  --color-border: #E2E8F0;
  --color-border-light: rgba(226, 232, 240, 0.7);
  --gradient-brand: linear-gradient(135deg, #32B39D 0%, #40C7B0 50%, #5DE0C9 100%);
  --gradient-orange: linear-gradient(135deg, #E88C52 0%, #F39E69 100%);
  --gradient-dark: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
  --gradient-mint: linear-gradient(135deg, #5BBFB5 0%, #4A9E96 100%);
  --gradient-blue: linear-gradient(135deg, #6B8FAD 0%, #5A7E9A 100%);
  --gradient-blue-deep: linear-gradient(135deg, #5A7E9A 0%, #48617A 100%);
  --gradient-red: linear-gradient(135deg, #E85D5D 0%, #D44A4A 100%);
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --radius-full: 9999px;
  --shadow-sm: 0 4px 12px rgba(30, 41, 59, 0.03);
  --shadow-md: 0 12px 32px -8px rgba(30, 41, 59, 0.08);
  --shadow-lg: 0 24px 60px -12px rgba(30, 41, 59, 0.12);
  --shadow-glow: 0 12px 36px rgba(50, 179, 157, 0.32);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-family);
  background-color: var(--color-bg);
  color: var(--color-slate);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
body::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 1000px;
  background:
    radial-gradient(circle at 18% 12%, rgba(50, 179, 157, 0.12) 0%, transparent 40%),
    radial-gradient(circle at 82% 22%, rgba(232, 140, 82, 0.09) 0%, transparent 45%),
    radial-gradient(circle at 50% 50%, rgba(92, 129, 166, 0.05) 0%, transparent 60%);
  pointer-events: none;
  z-index: -1;
}
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
img { max-width: 100%; height: auto; }
.container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }

/* Reveal scroll animations */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: transform, opacity;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ==========================================================================
   2. Common Components
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  font-size: 15px;
  font-weight: 700;
  border-radius: var(--radius-full);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}
.btn-primary {
  background: var(--gradient-brand);
  color: #FFFFFF;
  box-shadow: var(--shadow-glow);
}
.btn-primary:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 16px 40px rgba(50, 179, 157, 0.42);
}
.btn-orange {
  background: var(--gradient-orange);
  color: #FFFFFF;
  box-shadow: 0 10px 28px rgba(232, 140, 82, 0.3);
}
.btn-orange:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 16px 36px rgba(232, 140, 82, 0.4);
}
.btn-outline {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-color: rgba(30, 41, 59, 0.12);
  color: var(--color-dark);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: #FFFFFF;
  transform: translateY(-2px);
}
.btn-lg { padding: 18px 40px; font-size: 16px; }

.badge-glow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 18px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(50, 179, 157, 0.25);
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 700;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 20px rgba(50, 179, 157, 0.12);
  margin-bottom: 24px;
}
.badge-glow .dot {
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--color-primary);
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.section-title {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 64px;
}
.section-title h2 {
  font-size: 42px;
  font-weight: 900;
  color: var(--color-dark);
  letter-spacing: -1px;
  line-height: 1.2;
  margin-bottom: 16px;
}
.section-title p {
  font-size: 18px;
  color: var(--color-muted);
}

/* ==========================================================================
   3. Header
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(245, 249, 248, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 22px;
  font-weight: 900;
  color: var(--color-dark);
  letter-spacing: -0.5px;
}
.logo-img { width: 42px; height: 42px; object-fit: contain;border-radius: 10px }
.main-nav { display: flex; align-items: center; gap: 24px; }
.nav-link {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-slate);
  transition: color 0.25s;
  white-space: nowrap;
}
.nav-link:hover, .nav-link.active { color: var(--color-primary); }
.nav-link-shop { display: inline-flex; align-items: center; gap: 4px; color: var(--color-primary) !important; font-weight: 700; }
.nav-link-shop i { font-size: 15px; }
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.hamburger span {
  display: block;
  width: 100%;
  height: 3px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(6px, 6px); }
.hamburger.active span:nth-child(2) { opacity: 0; }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(6px, -6px); }

/* ==========================================================================
   4. Hero
   ========================================================================== */
.hero {
  padding: 80px 0 90px;
  position: relative;
  overflow: hidden;
}
.hero .container {
  display: flex;
  align-items: center;
  gap: 60px;
}
.hero-content { flex: 1; }
.hero-title {
  font-size: 52px;
  font-weight: 900;
  line-height: 1.12;
  color: var(--color-dark);
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}
.hero-title .highlight {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 18px;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 540px;
}
.hero-actions { display: flex; gap: 16px; margin-bottom: 48px; }
.hero-stats {
  display: flex;
  gap: 48px;
  padding-top: 32px;
  border-top: 1px solid rgba(226, 232, 240, 0.6);
}
.hero-stat { display: flex; flex-direction: column; gap: 4px; }
.hero-stat-num {
  font-size: 28px;
  font-weight: 800;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-stat-label { font-size: 14px; color: var(--color-muted); }

.hero-visual {
  flex: 0 0 400px;
  display: flex;
  justify-content: center;
  position: relative;
}
.hero-visual .hero-phone { position: relative; }

/* Phone Mockup */
.phone-mockup-wrapper {
  background: var(--color-dark);
  border-radius: 44px;
  padding: 10px;
  box-shadow: 0 30px 80px -15px rgba(30, 41, 59, 0.25), 0 0 0 8px rgba(255, 255, 255, 0.85);
  position: relative;
  width: 280px;
  height: 568px;
}
.phone-mockup-wrapper .phone-screen {
  width: 100%;
  height: 100%;
  border-radius: 34px;
  overflow: hidden;
  position: relative;
  background: #1a1a1a;
}
.phone-mockup-wrapper .phone-notch {
  width: 120px;
  height: 24px;
  background: var(--color-dark);
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  border-bottom-left-radius: 16px;
  border-bottom-right-radius: 16px;
  z-index: 10;
}
.phone-mockup-wrapper .phone-screen .carousel-slide {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  animation: phoneCarousel 14s infinite;
}
.phone-mockup-wrapper .phone-screen .carousel-slide:nth-of-type(1) { animation-delay: 0s; }
.phone-mockup-wrapper .phone-screen .carousel-slide:nth-of-type(2) { animation-delay: 2.8s; }
.phone-mockup-wrapper .phone-screen .carousel-slide:nth-of-type(3) { animation-delay: 5.6s; }
.phone-mockup-wrapper .phone-screen .carousel-slide:nth-of-type(4) { animation-delay: 8.4s; }
.phone-mockup-wrapper .phone-screen .carousel-slide:nth-of-type(5) { animation-delay: 11.2s; }
@keyframes phoneCarousel {
  0% { opacity: 0; }
  3% { opacity: 1; }
  17% { opacity: 1; }
  20% { opacity: 0; }
  100% { opacity: 0; }
}
.phone-mockup-sm { width: 200px; height: 410px; padding: 8px; border-radius: 32px; }
.phone-mockup-sm .phone-screen { border-radius: 24px; }
.phone-mockup-sm .phone-notch { width: 80px; height: 16px; border-radius: 0 0 10px 10px; }
.phone-mockup-sm .phone-screen img {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
}

/* ==========================================================================
   5. Scan Bar
   ========================================================================== */
.scan-bar { padding: 30px 0; position: relative; }
.scan-card {
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 28px 40px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
}
.scan-card img {
  width: 220px;
  height: 220px;
  border-radius: var(--radius-md);
  background: #fff;
  flex-shrink: 0;
}
.scan-text { display: flex; flex-direction: column; gap: 8px; }
.scan-title { font-size: 22px; font-weight: 700; color: var(--color-dark); }
.scan-sub { font-size: 15px; color: var(--color-muted); }

/* ==========================================================================
   6. Features Overview
   ========================================================================== */
.features-section { padding: 100px 0; background: #FFFFFF; }
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.feature-card {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}
.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(50, 179, 157, 0.35);
}
.feature-icon {
  width: 56px;
  height: 56px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
  box-shadow: 0 8px 20px var(--color-primary-light);
}
.feature-card h3 {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}
.feature-card p {
  font-size: 15px;
  color: var(--color-muted);
  line-height: 1.7;
}
.feature-card:nth-child(n+3) .feature-icon {
  color: var(--color-muted);
  box-shadow: none;
}

/* ==========================================================================
   7. Demo Showcase
   ========================================================================== */
.demo-section { padding: 100px 0; }
.demo-rows {
  display: flex;
  flex-direction: column;
  gap: 90px;
}
.demo-row {
  display: flex;
  align-items: center;
  gap: 80px;
}
.demo-row.reversed {
  flex-direction: row-reverse;
}
.demo-row-content { flex: 1; }
.demo-step {
  font-size: 13px;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 2px;
  margin-bottom: 12px;
  display: block;
}
.demo-row-content h3 {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: 16px;
}
.demo-row-content p {
  font-size: 16px;
  color: var(--color-muted);
  line-height: 1.8;
  max-width: 460px;
}
.demo-row-visual {
  flex: 0 0 auto;
  display: flex;
  justify-content: center;
}
.demo-row-visual .demo-phone { transition: all 0.4s ease; }
.demo-row-visual:hover .demo-phone { transform: scale(1.06); }

/* ==========================================================================
   8. Social Proof
   ========================================================================== */
.social-proof {
  padding: 64px 0;
  background: var(--color-dark);
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.social-proof::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -20%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(50, 179, 157, 0.08) 0%, transparent 70%);
  pointer-events: none;
}
.social-proof-stats {
  display: flex;
  justify-content: center;
  gap: 80px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.social-proof-stat .stat-num {
  font-size: 48px;
  font-weight: 900;
  margin-bottom: 6px;
  color: #fff;
}
.social-proof-stat .stat-label {
  font-size: 16px;
  letter-spacing: 1px;
  opacity: 0.7;
}

/* ==========================================================================
   9. Testimonials
   ========================================================================== */
.testimonials { padding: 100px 0; background: linear-gradient(180deg, rgba(245,249,248,0) 0%, rgba(229,244,240,0.4) 100%); }
.testimonials-scroll {
  overflow: hidden;
  margin: 0 -20px;
  padding: 20px 0;
  -webkit-mask: linear-gradient(90deg, transparent 0, #000 60px, #000 calc(100% - 60px), transparent 100%);
  mask: linear-gradient(90deg, transparent 0, #000 60px, #000 calc(100% - 60px), transparent 100%);
}
.testimonials-track {
  display: flex;
  gap: 24px;
  width: max-content;
  animation: testimonialScroll 60s linear infinite;
}
.testimonials-scroll:hover .testimonials-track { animation-play-state: paused; }
@keyframes testimonialScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}
.review-card {
  width: 380px;
  flex-shrink: 0;
  padding: 32px 28px;
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s ease;
}
.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.review-stars { color: var(--color-orange); font-size: 16px; margin-bottom: 16px; display: flex; gap: 4px; }
.review-text {
  font-size: 15px;
  color: var(--color-slate);
  line-height: 1.8;
  margin-bottom: 24px;
  font-weight: 500;
}
.review-user { display: flex; align-items: center; gap: 14px; }
.user-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #FFF;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  flex-shrink: 0;
}
.review-user-name { font-size: 14px; font-weight: 700; color: var(--color-dark); }
.review-user-shop { font-size: 13px; color: var(--color-muted); margin-top: 2px; }

/* ==========================================================================
   10. PC Management Section
   ========================================================================== */
.pc-section { padding: 80px 0; }
.pc-card {
  display: flex;
  align-items: center;
  gap: 60px;
  background: #fff;
  border-radius: 20px;
  padding: 56px 60px;
  box-shadow: 0 4px 24px rgba(0,0,0,0.04);
  border: 1px solid rgba(226,232,240,0.6);
}
.pc-content { flex: 1; }
.pc-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-primary);
  background: rgba(50,179,157,0.1);
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
  text-transform: uppercase;
}
.pc-content h2 {
  font-size: 32px;
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: 16px;
  line-height: 1.25;
}
.pc-content p {
  font-size: 16px;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 28px;
  max-width: 480px;
}
.pc-content .btn i { margin-left: 4px; }
.pc-visual { flex: 0 0 380px; }
.pc-mockup {
  background: #f1f5f9;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0,0,0,0.08);
  border: 1px solid #e2e8f0;
}
.pc-mockup-header {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  background: #fff;
  border-bottom: 1px solid #e2e8f0;
}
.pc-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #e2e8f0;
}
.pc-dot:first-child { background: #ef4444; }
.pc-dot:nth-child(2) { background: #f59e0b; }
.pc-dot:nth-child(3) { background: #10b981; }
.pc-mockup-body { display: flex; height: 200px; }
.pc-mockup-sidebar {
  width: 60px;
  background: #fff;
  border-right: 1px solid #e2e8f0;
}
.pc-mockup-main { flex: 1; padding: 16px; }
.pc-mockup-bar {
  height: 12px;
  background: #e2e8f0;
  border-radius: 6px;
  margin-bottom: 16px;
  width: 60%;
}
.pc-mockup-grid { display: flex; gap: 10px; }
.pc-mockup-card {
  flex: 1;
  height: 80px;
  background: #e2e8f0;
  border-radius: 6px;
}
.pc-mockup-card:nth-child(2) { background: var(--color-primary); opacity: 0.15; }
.pc-mockup-card:nth-child(3) { background: #e2e8f0; }
@media (max-width: 768px) {
  .pc-card { flex-direction: column; padding: 36px 28px; gap: 32px; text-align: center; }
  .pc-content p { max-width: none; }
  .pc-visual { flex: none; width: 100%; max-width: 380px; }
  .pc-content h2 { font-size: 24px; }
}

/* ==========================================================================
   11. How to Start (Steps)
   ========================================================================== */
.steps-section { padding: 100px 0; text-align: center; }
.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 900px;
  margin: 0 auto;
}
.step-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 40px 24px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  border-radius: var(--radius-lg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-sm);
  position: relative;
}
.step-card:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 50px;
  left: calc(50% + 50px);
  width: calc(100% - 100px);
  height: 2px;
  border-top: 2px dashed rgba(50, 179, 157, 0.25);
  pointer-events: none;
}
.step-num {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #fff;
  font-size: 24px;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 6px 20px rgba(50, 179, 157, 0.35);
}
.step-card h3 { font-size: 20px; font-weight: 700; color: var(--color-dark); }
.step-card p { font-size: 14px; color: var(--color-muted); line-height: 1.7; }

/* ==========================================================================
   11. Pricing
   ========================================================================== */
.pricing-section { padding: 100px 0; background: #FFFFFF; }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  max-width: 1100px;
  margin: 0 auto;
  align-items: stretch;
}
.pricing-card {
  background: #FFFFFF;
  border-radius: var(--radius-lg);
  padding: 48px 36px;
  border: 1px solid var(--color-border);
  position: relative;
  transition: all 0.3s;
  display: flex;
  flex-direction: column;
}
.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.pricing-card.popular {
  background: var(--gradient-blue);
  color: #FFFFFF;
  border: none;
  box-shadow: var(--shadow-lg);
}
.pricing-card.popular:hover { transform: translateY(-4px); }
.pricing-card.popular .pricing-price-placeholder { color: rgba(255,255,255,0.9); }
.popular-tag {
  position: absolute;
  top: -16px;
  right: 36px;
  background: var(--gradient-orange);
  color: #FFF;
  padding: 6px 20px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 800;
  box-shadow: 0 6px 20px rgba(232, 140, 82, 0.35);
}
.pricing-card h3 { font-size: 22px; font-weight: 800; margin-bottom: 8px; }
.pricing-card.popular h3 { color: #FFF; }
.pricing-price {
  font-size: 42px;
  font-weight: 900;
  margin: 20px 0;
  letter-spacing: -1px;
  min-height: 50px;
}
.pricing-card.popular .pricing-price { color: #FFF; }
.pricing-price-placeholder { font-size: 20px; font-weight: 600; opacity: 0.5; display: block; }
.pricing-card.popular .pricing-price-placeholder { color: rgba(255,255,255,0.9); opacity: 1; }
.pricing-sub { font-size: 14px; color: var(--color-muted); }
.pricing-card.popular .pricing-sub { color: rgba(255,255,255,0.9); opacity: 1; }
.pricing-list {
  list-style: none;
  margin: 28px 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 15px;
  flex: 1;
}
.pricing-list li { display: flex; align-items: center; gap: 12px; }
.pricing-list i { color: var(--color-primary); font-size: 20px; }
.pricing-card.popular .pricing-list i { color: #EAF1F7; }
.pricing-card .btn { margin-top: auto; }
.pricing-badge {
  position: absolute;
  top: -16px;
  right: 36px;
  color: #FFF;
  padding: 6px 20px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 800;
  box-shadow: 0 6px 20px rgba(232, 140, 82, 0.35);
}
.pricing-badge.free { background: var(--gradient-mint); }
.pricing-badge.premium { background: var(--gradient-red); }
.pricing-period { font-size: 20px; font-weight: 700; opacity: 0.5; }
.core-feature { font-weight: 600; }
.core-feature i { color: var(--color-primary) !important; }
.pricing-card.popular .core-feature i { color: #EAF1F7 !important; }
.pricing-limit {
  display: inline-block;
  background: #F0F0F0;
  padding: 1px 8px;
  border-radius: 10px;
  font-size: 12px;
  color: #888;
  margin-left: auto;
}
.pricing-card.popular .pricing-limit { background: rgba(255,255,255,0.15); color: rgba(255,255,255,0.7); }
.pricing-badge-sm {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 700;
}
.pricing-badge-sm.new { background: #FFE0C0; color: #D4722A; }
.pricing-annual {
  font-size: 16px;
  color: #1a1a1a;
  margin: 4px 0 14px;
  font-weight: 600;
  line-height: 1.5;
}
.pricing-card.popular .pricing-annual { color: #FFF; opacity: 0.95; }
.pricing-annual .save-tag {
  display: inline-block;
  background: linear-gradient(135deg, #F4845F, #E06840);
  color: #FFF;
  padding: 2px 12px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 800;
  margin-left: 8px;
  vertical-align: middle;
  box-shadow: 0 2px 8px rgba(232,140,82,0.3);
}
.pricing-annual .save-detail {
  font-size: 13px;
  font-weight: 400;
  opacity: 0.65;
  margin-top: 2px;
}
.pricing-card.popular .pricing-annual .save-detail { opacity: 0.7; }

/* ==========================================================================
   12b. Comparison Table
   ========================================================================== */
.compare-section { padding: 60px 0; }
.compare-section .section-title { margin-bottom: 40px; }
.compare-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}
.compare-table {
  width: 100%;
  min-width: 600px;
  border-collapse: collapse;
  background: #FFF;
  font-size: 14px;
}
.compare-table th,
.compare-table td {
  padding: 14px 20px;
  text-align: center;
  border-bottom: 1px solid #E8F0EE;
  vertical-align: middle;
}
.compare-table th:first-child,
.compare-table td:first-child { text-align: left; width: 200px; }
.compare-table thead th {
  color: #FFF;
  font-weight: 700;
  font-size: 15px;
  padding: 18px 20px;
}
.compare-table thead th:first-child { background: #1a3a36; }
.compare-table thead th:nth-child(2) { background: #4A9E96; }
.compare-table thead th:nth-child(3) { background: #5A7E9A; }
.compare-table thead th:nth-child(4) { background: #D44A4A; }
.compare-table thead th small {
  display: block;
  font-weight: 400;
  font-size: 12px;
  opacity: 0.7;
  margin-top: 2px;
}
.compare-table tbody tr:nth-child(even) { background: #F8FCFB; }
.compare-table tbody tr:hover { background: #EEF6F4; }
.compare-table .cat-hdr {
  background: #D8F0EC !important;
  font-weight: 800;
  color: #1a3a36;
  font-size: 12px;
  letter-spacing: 1px;
}
.compare-table .cat-hdr td { padding: 10px 20px; }
.compare-table .check { color: #32B39D; font-weight: 800; font-size: 16px; }
.compare-table .cross { color: #CCC; font-size: 16px; }
.compare-table .val { font-size: 13px; color: var(--color-muted); }

/* ==========================================================================
   12c. Modal Dialog
   ========================================================================== */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0,0,0,0.35);
  z-index: 10000;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.modal-overlay.open {
  opacity: 1;
}
.modal-box {
  background: #FFF;
  border-radius: 20px;
  width: calc(100% - 40px);
  max-width: 380px;
  position: relative;
  box-shadow: 0 25px 60px rgba(0,0,0,0.15);
  transform: scale(0.9) translateY(20px);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  padding: 36px 32px 28px;
}
.modal-overlay.open .modal-box {
  transform: scale(1) translateY(0);
}
.modal-close {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 30px;
  height: 30px;
  border: none;
  background: #F0F0F0;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #999;
  transition: background 0.2s, color 0.2s;
  line-height: 1;
}
.modal-close:hover { background: #E0E0E0; color: #555; }
.modal-icon {
  text-align: center;
  margin-bottom: 16px;
  font-size: 48px;
  line-height: 1;
  display: none;
}
.modal-icon.info { color: #32B39D; display: block; }
.modal-icon.success { color: #4CAF50; display: block; }
.modal-icon.warning { color: #F4845F; display: block; }
.modal-icon.error { color: #E85D5D; display: block; }
.modal-title {
  text-align: center;
  font-size: 18px;
  font-weight: 800;
  color: #1a1a1a;
  margin-bottom: 12px;
}
.modal-content {
  text-align: center;
  font-size: 15px;
  color: #555;
  line-height: 1.7;
  margin-bottom: 24px;
}
.modal-footer {
  display: flex;
  gap: 12px;
}
.modal-footer .btn { flex: 1; justify-content: center; }
.btn-danger {
  background: linear-gradient(135deg, #E85D5D, #D94A4A) !important;
  color: #FFF !important;
  border: none !important;
}
.btn-danger:hover { background: linear-gradient(135deg, #D94A4A, #C33) !important; }

/* ==========================================================================
   13. CTA Section
   ========================================================================== */
.cta-section {
  padding: 80px 0;
  background: var(--gradient-dark);
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: '';
  position: absolute;
  top: -60%;
  right: -10%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(50, 179, 157, 0.08) 0%, transparent 60%);
  pointer-events: none;
}
.cta-section .container { position: relative; z-index: 1; }
.cta-section h2 { font-size: 36px; font-weight: 900; margin-bottom: 12px; }
.cta-section p { font-size: 18px; opacity: 0.8; margin-bottom: 36px; }
.cta-section .btn-outline {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.3);
  color: #fff;
}
.cta-section .btn-outline:hover {
  background: #fff;
  color: var(--color-dark);
  border-color: #fff;
}
.lead-form {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin: 36px auto 16px;
  flex-wrap: wrap;
  max-width: 560px;
}
.lead-form input {
  flex: 1;
  min-width: 200px;
  padding: 16px 22px;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-full);
  font-size: 15px;
  font-family: inherit;
  outline: none;
  background: rgba(255,255,255,0.12);
  color: #fff;
  transition: all 0.3s ease;
}
.lead-form input::placeholder { color: rgba(255,255,255,0.5); }
.lead-form input:focus { border-color: var(--color-primary); background: rgba(255,255,255,0.2); }

/* ==========================================================================
   13. Footer
   ========================================================================== */
.site-footer {
  background: var(--color-dark);
  color: #94A3B8;
  padding: 70px 0 40px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr) 1.5fr;
  gap: 40px;
  margin-bottom: 50px;
}
.footer-brand h3 { color: #FFF; font-size: 22px; font-weight: 900; margin-bottom: 16px; }
.footer-brand p { line-height: 1.7; max-width: 360px; }
.footer-col h4 { color: #FFF; margin-bottom: 16px; font-size: 15px; }
.footer-col p { margin-bottom: 10px; }
.footer-col a { color: #94A3B8; transition: color 0.25s; }
.footer-col a:hover { color: var(--color-primary); }
.footer-qr {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding: 40px 0;
  border-top: 1px solid rgba(255,255,255,0.06);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  margin-bottom: 30px;
}
.footer-qr-item { display: flex; align-items: center; gap: 12px; }
.footer-qr-item img {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-sm);
  background: #fff;
  padding: 6px;
}
.footer-qr-item span { font-size: 13px; color: #94A3B8; }
.footer-bottom { text-align: center; font-size: 13px; }
.footer-bottom p { margin-bottom: 4px; }
.footer-bottom a { color: #94A3B8; }
.footer-bottom a:hover { color: var(--color-primary); }

/* ==========================================================================
   14. Toast & Back to Top
   ========================================================================== */
.toast {
  position: fixed;
  top: 24px;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 24px;
  background: var(--color-dark);
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 10000;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}
.toast.show { opacity: 1; }
.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-brand);
  color: #fff;
  border: none;
  cursor: pointer;
  font-size: 20px;
  display: none;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow);
  z-index: 999;
  transition: all 0.3s ease;
}
.back-to-top:hover { transform: translateY(-2px); }
.back-to-top.show { display: flex; }

/* ==========================================================================
   15. Page-specific styles
   ========================================================================== */
.page-hero { padding: 100px 0 70px; text-align: center; position: relative; background: linear-gradient(180deg, rgba(245,249,248,0.8) 0%, rgba(229,244,240,0.3) 100%); }
.page-hero h1 { font-size: 44px; font-weight: 900; color: var(--color-dark); margin-bottom: 16px; letter-spacing: -1px; }
.page-hero p { font-size: 18px; color: var(--color-muted); max-width: 600px; margin: 0 auto; line-height: 1.7; }
.page-hero-tag { display: inline-flex; align-items: center; gap: 8px; padding: 6px 18px; background: rgba(255,255,255,0.85); backdrop-filter: blur(12px); border: 1px solid rgba(50,179,157,0.25); color: var(--color-primary); font-size: 13px; font-weight: 700; border-radius: var(--radius-full); box-shadow: 0 4px 20px rgba(50,179,157,0.12); margin-bottom: 24px; }
.page-hero-tag .dot { width: 8px; height: 8px; background: var(--color-primary); border-radius: 50%; box-shadow: 0 0 10px var(--color-primary); animation: pulse 2s infinite; display: inline-block; }

.feature-detail { padding: 80px 0; background: #fff; }
.feature-detail-item { padding: 48px 40px; margin-bottom: 24px; background: var(--glass-bg); backdrop-filter: blur(16px); border-radius: var(--radius-lg); border: 1px solid var(--glass-border); box-shadow: var(--shadow-sm); transition: all 0.3s ease; }
.feature-detail-item:last-child { margin-bottom: 0; }
.feature-detail-item:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.feature-detail-content h2 { font-size: 26px; font-weight: 800; color: var(--color-dark); margin-bottom: 16px; display: flex; align-items: center; gap: 12px; }
.feature-detail-content h2::before { content: ''; display: inline-block; width: 4px; height: 26px; background: var(--gradient-brand); border-radius: 2px; flex-shrink: 0; }
.feature-detail-desc { font-size: 16px; color: var(--color-muted); line-height: 1.8; margin-bottom: 24px; max-width: 800px; }
.feature-detail-list { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.feature-detail-list li { padding: 16px 20px; background: var(--color-primary-light); border-radius: 12px; font-size: 15px; color: var(--color-slate); line-height: 1.6; }
.feature-detail-list li strong { color: var(--color-primary); font-weight: 700; }

.pricing-full { padding: 80px 0; }
.pricing-contact { padding: 80px 0; background: #fff; }
.pricing-contact-card { display: flex; align-items: center; gap: 48px; padding: 48px 48px; background: var(--glass-bg); backdrop-filter: blur(16px); border-radius: var(--radius-lg); border: 1px solid var(--glass-border); box-shadow: var(--shadow-sm); max-width: 700px; margin: 0 auto; }
.pricing-contact-qr { flex-shrink: 0; }
.pricing-contact-qr img { width: 140px; height: 140px; border-radius: var(--radius-md); background: #fff; padding: 8px; box-shadow: var(--shadow-sm); }
.pricing-contact-info h2 { font-size: 24px; font-weight: 800; color: var(--color-dark); margin-bottom: 12px; }
.pricing-contact-info p { font-size: 16px; color: var(--color-muted); line-height: 1.7; margin-bottom: 16px; }
.pricing-contact-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.pricing-contact-tags .tag { display: inline-block; padding: 6px 16px; font-size: 13px; font-weight: 600; color: var(--color-primary); background: var(--color-primary-light); border-radius: var(--radius-full); }

.about-story { padding: 80px 0; background: #fff; }
.about-content { max-width: 800px; margin: 0 auto; }
.about-content h2 { font-size: 32px; font-weight: 900; color: var(--color-dark); margin-bottom: 24px; letter-spacing: -0.5px; }
.about-content p { font-size: 16px; color: var(--color-muted); line-height: 1.9; margin-bottom: 20px; }
.about-values { padding: 80px 0; }
.values-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; max-width: 1000px; margin: 0 auto; }
.value-card { padding: 36px 28px; background: var(--glass-bg); backdrop-filter: blur(16px); border-radius: var(--radius-lg); text-align: center; border: 1px solid var(--glass-border); box-shadow: var(--shadow-sm); transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1); }
.value-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: rgba(50,179,157,0.35); }
.value-icon { width: 56px; height: 56px; border-radius: var(--radius-md); background: var(--color-primary-light); margin: 0 auto 20px; display: flex; align-items: center; justify-content: center; font-size: 28px; color: var(--color-primary); box-shadow: 0 8px 20px var(--color-primary-light); }
.value-card h3 { font-size: 20px; font-weight: 800; color: var(--color-dark); margin-bottom: 8px; }
.value-card p { font-size: 14px; color: var(--color-muted); line-height: 1.7; }
.about-contact { padding: 80px 0; }
.contact-info { max-width: 500px; margin: 0 auto; display: flex; flex-direction: column; gap: 20px; }
.contact-item { display: flex; justify-content: space-between; padding: 16px 24px; background: var(--glass-bg); backdrop-filter: blur(16px); border-radius: 12px; border: 1px solid var(--glass-border); }
.contact-label { font-size: 15px; color: var(--color-muted); font-weight: 500; }
.contact-value { font-size: 15px; color: var(--color-dark); font-weight: 600; }
.contact-value a { color: var(--color-primary); word-break: break-all; }

.contact-section { padding: 80px 0; background: #fff; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; max-width: 960px; margin: 0 auto; }
.about-qr { display: flex; flex-direction: column; align-items: center; gap: 8px; padding: 24px; background: var(--glass-bg); backdrop-filter: blur(16px); border-radius: var(--radius-md); border: 1px solid var(--glass-border); }
.about-qr img { width: 120px; height: 120px; border-radius: 8px; background: #fff; padding: 6px; box-shadow: var(--shadow-sm); }
.about-qr p { font-size: 13px; color: var(--color-muted); }
.contact-info-list h2 { font-size: 24px; font-weight: 800; color: var(--color-dark); margin-bottom: 32px; }
.contact-info-list .contact-item { display: flex; align-items: flex-start; justify-content: flex-start; gap: 16px; padding: 24px; margin-bottom: 16px; background: var(--glass-bg); backdrop-filter: blur(16px); border-radius: var(--radius-lg); border: 1px solid var(--glass-border); box-shadow: var(--shadow-sm); transition: all 0.3s ease; }
.contact-info-list .contact-item:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.contact-icon { width: 48px; height: 48px; border-radius: var(--radius-md); background: var(--color-primary-light); flex-shrink: 0; display: flex; align-items: center; justify-content: center; font-size: 24px; color: var(--color-primary); box-shadow: 0 8px 20px var(--color-primary-light); }
.contact-info-list .contact-item h4 { font-size: 15px; font-weight: 700; color: var(--color-dark); margin-bottom: 8px; }
.contact-wechat-item { align-items: center !important; }
.contact-qr-thumb { width: 80px; height: 80px; border-radius: 8px; background: #fff; padding: 4px; box-shadow: var(--shadow-sm); flex-shrink: 0; transition: transform 0.3s ease; }
.contact-qr-thumb:hover { transform: scale(1.08); }
.copy-btn { padding: 6px 14px; font-size: 13px; font-weight: 500; color: #fff; background: var(--gradient-brand); border: none; border-radius: 6px; cursor: pointer; transition: all 0.2s ease; display: inline-flex; align-items: center; gap: 4px; }
.copy-btn:hover { box-shadow: var(--shadow-glow); }
.contact-info-list .contact-item > div { text-align: left; }
.contact-info-list .contact-item p { font-size: 14px; color: var(--color-muted); }
.contact-form-wrapper { padding: 36px; background: var(--glass-bg); backdrop-filter: blur(16px); border-radius: var(--radius-lg); border: 1px solid var(--glass-border); box-shadow: var(--shadow-sm); }
.contact-form-wrapper h2 { font-size: 24px; font-weight: 800; color: var(--color-dark); margin-bottom: 24px; }
.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-size: 14px; font-weight: 600; color: var(--color-dark); margin-bottom: 6px; }
.form-group input, .form-group textarea { width: 100%; padding: 14px 18px; border: 1px solid var(--color-border); border-radius: var(--radius-sm); font-size: 15px; font-family: inherit; transition: all 0.3s ease; outline: none; background: #fff; }
.form-group input:focus, .form-group textarea:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-light); }
.btn-block { width: 100%; }

.terms-content { max-width: 800px; margin: 0 auto 60px; padding: 0 20px; }
.terms-content h1 { font-size: 36px; font-weight: 900; text-align: center; margin-bottom: 8px; color: var(--color-dark); letter-spacing: -1px; }
.terms-content .terms-meta { text-align: center; color: var(--color-muted); font-size: 14px; margin-bottom: 48px; }
.terms-content section { margin-bottom: 36px; }
.terms-content h2 { font-size: 22px; font-weight: 800; color: var(--color-dark); margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
.terms-content h2::before { content: ''; display: inline-block; width: 4px; height: 22px; background: var(--gradient-brand); border-radius: 2px; flex-shrink: 0; }
.terms-content p { font-size: 15px; color: var(--color-muted); line-height: 1.8; margin-bottom: 12px; }
.terms-content ul { margin-bottom: 12px; }
.terms-content ul li { padding: 6px 0 6px 20px; font-size: 15px; color: var(--color-muted); line-height: 1.8; position: relative; }
.terms-content ul li::before { content: ''; position: absolute; left: 0; top: 14px; width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary); }
.terms-content .contact-card { margin-top: 40px; padding: 32px; background: var(--gradient-brand); border-radius: var(--radius-lg); color: #fff; }
.terms-content .highlight { color: var(--color-primary); font-weight: 700; }
.terms-content .sub-title { font-size: 16px; font-weight: 700; color: var(--color-dark); margin: 20px 0 8px; }

.pricing-badge { display: inline-block; padding: 4px 16px; font-size: 12px; font-weight: 800; border-radius: var(--radius-full); margin-bottom: 16px; letter-spacing: 0.5px; }
.pricing-badge.free { background: rgba(91,191,181,0.12); color: #3E8C85; }
.pricing-badge.premium { background: rgba(232,93,93,0.12); color: #D44A4A; }

/* ==========================================================================
   16. Manual / User Guide
   ========================================================================== */
.manual-content { max-width: 960px; margin: 0 auto 60px; padding: 0 20px; }
.manual-content section { margin-bottom: 48px; scroll-margin-top: 100px; }
.manual-content h2 { font-size: 24px; font-weight: 800; color: var(--color-dark); margin-bottom: 20px; display: flex; align-items: center; gap: 10px; }
.manual-content h2::before { content: ''; display: inline-block; width: 4px; height: 24px; background: var(--gradient-brand); border-radius: 2px; flex-shrink: 0; }
.manual-content p { font-size: 15px; color: var(--color-muted); line-height: 1.8; margin-bottom: 12px; }
.manual-content ul { margin-bottom: 12px; }
.manual-content ul li { padding: 6px 0 6px 20px; font-size: 15px; color: var(--color-muted); line-height: 1.8; position: relative; }
.manual-content ul li::before { content: ''; position: absolute; left: 0; top: 14px; width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary); }
.manual-content ul ul { margin: 6px 0 6px 16px; }
.manual-content ul ul li { padding: 4px 0 4px 20px; font-size: 14px; }
.manual-content ul ul li::before { width: 4px; height: 4px; top: 12px; background: var(--color-muted); }
.manual-content .highlight { color: var(--color-primary); font-weight: 700; }
.manual-content .sub-title { font-size: 16px; font-weight: 700; color: var(--color-dark); margin: 20px 0 8px; scroll-margin-top: 100px; }
.manual-content .contact-card { margin-top: 40px; padding: 32px; background: var(--gradient-brand); border-radius: var(--radius-lg); color: #fff; }
.manual-content .contact-card .label { font-size: 18px; font-weight: 800; margin-bottom: 8px; }
.manual-content .contact-card .item { font-size: 15px; opacity: 0.9; }
.manual-toc { max-width: 960px; margin: 0 auto 48px; padding: 0 20px; }
.manual-toc-inner { background: var(--glass-bg); backdrop-filter: blur(16px); border: 1px solid var(--glass-border); border-radius: var(--radius-lg); padding: 32px 36px; box-shadow: var(--shadow-sm); }
.manual-toc-title { font-size: 15px; font-weight: 700; color: var(--color-muted); margin-bottom: 16px; letter-spacing: 1px; text-transform: uppercase; }
.manual-toc-list { display: flex; flex-direction: column; gap: 2px; }
.manual-toc-item { display: flex; align-items: baseline; gap: 8px; padding: 8px 12px; font-size: 14px; font-weight: 600; color: var(--color-slate); border-radius: 8px; transition: all 0.25s ease; text-decoration: none; }
.manual-toc-item:hover { background: var(--color-primary-light); color: var(--color-primary); }
.manual-toc-item .toc-num { display: inline-flex; align-items: center; justify-content: center; width: 22px; height: 22px; border-radius: 5px; background: var(--color-primary-light); color: var(--color-primary); font-size: 11px; font-weight: 800; flex-shrink: 0; }
.manual-toc-item:hover .toc-num { background: var(--color-primary); color: #fff; }
.manual-toc-item.sub { padding-left: 42px; font-weight: 500; font-size: 13px; }
.manual-toc-item.sub .toc-num { width: 18px; height: 18px; font-size: 10px; background: transparent; color: var(--color-muted); }
.manual-toc-item.sub:hover .toc-num { background: var(--color-primary); color: #fff; }
@media (max-width: 1080px) {
  .hamburger { display: flex; }
  .main-nav {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 84px;
    left: 0;
    right: 0;
    background: rgba(245,249,248,0.98);
    padding: 0 24px;
    box-shadow: var(--shadow-md);
    z-index: 999;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.3s ease;
  }
  .main-nav.open { max-height: 520px; opacity: 1; padding: 16px 24px; }
  .main-nav a { padding: 12px 24px; text-align: left; }
}
@media (max-width: 768px) {
  /* 移动端顶栏：logo/CTA/汉堡一行不挤压 */
  .header-inner { height: 64px; }
  .container { padding: 0 16px; }
  .logo { gap: 8px; font-size: 18px; }
  .logo-img { width: 34px; height: 34px; }
  .header-inner .btn { padding: 9px 18px; font-size: 13px; gap: 6px; }
  .header-inner .btn i { display: none; }
  .main-nav { top: 64px; }
  .hero { padding: 60px 0; }
  .hero-title { font-size: 32px; }
  .hero-stats { flex-wrap: wrap; gap: 20px; }
  .section-title h2 { font-size: 30px; }
  .features-grid { grid-template-columns: 1fr; }
  .demo-rows { gap: 60px; }
  .demo-row, .demo-row.reversed { flex-direction: column; text-align: center; gap: 28px; }
  .demo-row-content p { max-width: 100%; margin: 0 auto; }
  .demo-step { margin-bottom: 8px; }
  .phone-mockup-wrapper { width: 240px; height: 490px; padding: 8px; }
  .phone-mockup-wrapper .phone-screen { border-radius: 28px; }
  .phone-mockup-sm { width: 180px; height: 370px; }
  .scan-card { flex-direction: column; text-align: center; padding: 20px; }
  .scan-card img { width: 160px; height: 160px; }
  .social-proof-stats { gap: 40px; }
  .social-proof-stat .stat-num { font-size: 32px; }
  .steps-grid { grid-template-columns: 1fr; max-width: 400px; }
  .step-card:not(:last-child)::after { display: none; }
  .pricing-grid { max-width: 400px; }
  .review-card { width: 300px; }
  .cta-section h2 { font-size: 28px; }
  .site-footer { padding: 50px 0 30px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-qr { flex-direction: column; gap: 16px; align-items: center; }
  .footer-qr-item { flex-direction: column; text-align: center; }
  .footer-qr-item img { width: 100px; height: 100px; }
  .back-to-top { right: 16px; bottom: 16px; width: 38px; height: 38px; font-size: 16px; }
  .page-hero { padding: 60px 0 50px; }
  .page-hero h1 { font-size: 32px; }
  .page-hero p { font-size: 16px; }
  .feature-detail-item { padding: 32px 24px; }
  .values-grid { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Calculator Section
   ========================================================================== */
.calc-section { padding: 80px 0; }
.calc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  max-width: 960px;
  margin: 0 auto;
}
.calc-input-panel, .calc-result-panel {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border-light);
}
.calc-input-panel h2, .calc-result-panel h2 {
  font-size: 18px;
  font-weight: 800;
  color: var(--color-dark);
  margin-bottom: 20px;
  letter-spacing: -0.3px;
}
.calc-group { margin-bottom: 24px; }
.calc-group label:first-of-type,
.calc-group > label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.calc-input-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.calc-input-row span {
  font-size: 14px;
  color: var(--color-slate);
  white-space: nowrap;
  flex-shrink: 0;
}
.calc-num-input {
  width: 80px;
  padding: 8px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 700;
  color: var(--color-dark);
  text-align: right;
  background: var(--color-bg);
  transition: border-color 0.2s;
  font-family: inherit;
}
.calc-num-input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: #fff;
}
.calc-result-box {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 20px;
}
.calc-result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  font-size: 15px;
}
.calc-result-label { color: var(--color-muted); }
.calc-result-value { font-weight: 700; color: var(--color-dark); }
.calc-divider {
  height: 1px;
  background: var(--color-border);
  margin: 8px 0;
}
.calc-result-total {
  font-size: 17px;
  font-weight: 800;
}
.calc-total-amount {
  font-size: 22px;
  font-weight: 900;
  color: var(--color-primary);
}
.calc-note {
  font-size: 13px;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}
.btn-block { width: 100%; display: inline-flex; }


/* ==========================================================================
   FAQ Accordion Section
   ========================================================================== */
.faq-quick { padding: 0 0 40px; }
.faq-quick-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  max-width: 720px;
  margin: 0 auto;
}
.faq-quick-tag {
  display: inline-flex;
  align-items: center;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-slate);
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: all 0.25s ease;
}
.faq-quick-tag:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-light);
  transform: translateY(-1px);
}
.faq-accordion { padding: 60px 0 80px; }
.faq-group {
  max-width: 800px;
  margin: 0 auto 48px;
}
.faq-group:last-child { margin-bottom: 0; }
.faq-group-label {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-left: 4px;
  display: flex;
  align-items: center;
  gap: 10px;
}
.faq-group-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--color-primary-light) 0%, transparent 100%);
}
.faq-item {
  background: #fff;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow 0.3s ease, border-color 0.3s ease;
}
.faq-item:hover {
  box-shadow: var(--shadow-md);
  border-color: rgba(50, 179, 157, 0.3);
}
.faq-item.is-open {
  border-color: var(--color-primary);
  box-shadow: 0 8px 32px rgba(50, 179, 157, 0.12);
}
.faq-q {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  padding: 20px 24px;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: background 0.2s ease;
}
.faq-q:hover { background: rgba(245, 249, 248, 0.6); }
.faq-q-icon {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all 0.3s ease;
}
.faq-q-icon i {
  font-size: 16px;
  color: var(--color-primary);
  transition: transform 0.3s ease;
}
.faq-item.is-open .faq-q-icon {
  background: var(--color-primary);
}
.faq-item.is-open .faq-q-icon i {
  color: #fff;
  transform: rotate(45deg);
}
.faq-q > span:nth-child(2) {
  flex: 1;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1.4;
  transition: color 0.2s ease;
}
.faq-item.is-open .faq-q > span:nth-child(2) {
  color: var(--color-primary);
}
.faq-arrow {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.faq-arrow i {
  font-size: 20px;
  color: var(--color-muted);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), color 0.25s ease;
}
.faq-item.is-open .faq-arrow i {
  transform: rotate(45deg);
  color: var(--color-primary);
}
.faq-a {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s ease;
  padding: 0 24px;
}
.faq-item.is-open .faq-a {
  max-height: 400px;
  padding: 0 24px 22px;
}
.faq-a p {
  font-size: 14px;
  color: var(--color-muted);
  line-height: 1.8;
  margin-bottom: 10px;
}
.faq-a p:last-child { margin-bottom: 0; }
.faq-a .highlight { color: var(--color-primary); font-weight: 700; }
.faq-a-note {
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13px;
  color: var(--color-slate) !important;
  margin-top: 4px;
}
.faq-a-tip {
  background: rgba(232, 140, 82, 0.08);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  font-size: 13px;
  color: var(--color-slate) !important;
  margin-top: 4px;
}
.faq-cta { padding: 0 0 80px; }
.faq-cta-card {
  max-width: 760px;
  margin: 0 auto;
  background: var(--gradient-dark);
  border-radius: var(--radius-lg);
  padding: 56px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}
.faq-cta-card::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(50, 179, 157, 0.18) 0%, transparent 70%);
  pointer-events: none;
}
.faq-cta-text { position: relative; z-index: 1; flex: 1; }
.faq-cta-text h2 {
  font-size: 28px;
  font-weight: 900;
  color: #fff;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
}
.faq-cta-text p {
  font-size: 15px;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.6;
}
.faq-cta-actions {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
  position: relative;
  z-index: 1;
}
.faq-cta-actions .btn-outline {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  color: #fff;
}
.faq-cta-actions .btn-outline:hover {
  background: #fff;
  color: var(--color-dark);
  border-color: #fff;
}
@media (max-width: 768px) {
  .faq-quick-list { flex-direction: column; align-items: center; }
  .faq-q { padding: 16px 18px; gap: 12px; }
  .faq-q > span:nth-child(2) { font-size: 14px; }
  .faq-a { padding: 0 18px; }
  .faq-item.is-open .faq-a { padding: 0 18px 18px; }
  .faq-cta-card { flex-direction: column; text-align: center; padding: 40px 28px; }
  .faq-cta-actions { flex-direction: column; width: 100%; }
  .faq-cta-actions .btn { width: 100%; justify-content: center; }
}

@media (max-width: 768px) {
  .manual-toc-inner { padding: 24px 20px; }
  .manual-content { max-width: 100%; }
}

/* ==========================================================================
   18. Article pages (/article)
   ========================================================================== */
.article-list { display: flex; flex-direction: column; gap: 20px; max-width: 760px; margin: 0 auto 80px; }
.article-item { display: block; background: #fff; border-radius: 16px; padding: 28px 32px; box-shadow: 0 2px 12px rgba(26, 26, 26, 0.06); transition: transform 0.3s ease, box-shadow 0.3s ease; }
.article-item:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(26, 26, 26, 0.1); }
.article-item-meta { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.article-item-date { font-size: 13px; color: #999; }
.article-item-tag { font-size: 12px; color: var(--color-primary); background: rgba(91, 191, 181, 0.1); padding: 2px 10px; border-radius: 10px; }
.article-item-title { font-size: 20px; font-weight: 800; color: var(--color-dark); margin-bottom: 8px; line-height: 1.4; }
.article-item-desc { font-size: 14px; color: var(--color-muted); line-height: 1.7; margin: 0; }
.article-meta { display: flex; align-items: center; gap: 10px; padding-bottom: 16px; border-bottom: 1px solid #eef4f4; font-size: 13px; color: #999; flex-wrap: wrap; }

/* Markdown 渲染补充元素（manual-content 内 h3/strong/a/blockquote/table/pre） */
.manual-content h3 { font-size: 18px; font-weight: 800; color: var(--color-dark); margin: 26px 0 14px; }
.manual-content h4 { font-size: 15px; font-weight: 700; color: var(--color-dark); margin: 20px 0 10px; }
.manual-content strong { color: var(--color-dark); font-weight: 700; }
.manual-content a { color: var(--color-primary); text-decoration: none; border-bottom: 1px dashed rgba(91, 191, 181, 0.5); }
.manual-content a:hover { border-bottom-style: solid; }
.manual-content blockquote { margin: 16px 0; padding: 14px 20px; background: rgba(91, 191, 181, 0.06); border-left: 3px solid var(--color-primary); border-radius: 0 10px 10px 0; }
.manual-content blockquote p { margin: 0; }
.manual-content table { width: 100%; border-collapse: collapse; margin: 18px 0; font-size: 14px; background: #fff; }
.manual-content th { background: #f5fafa; color: var(--color-dark); font-weight: 700; text-align: left; }
.manual-content th, .manual-content td { padding: 10px 14px; border: 1px solid #e8f0f0; line-height: 1.6; }
.manual-content pre { margin: 16px 0; padding: 16px 20px; background: #f5fafa; border-radius: 10px; overflow-x: auto; }
.manual-content pre code { background: none; padding: 0; color: var(--color-dark); }
.manual-content code { background: #f5fafa; padding: 2px 6px; border-radius: 4px; font-size: 13px; color: #d05a6e; }
@media (max-width: 768px) {
  .article-item { padding: 20px 22px; }
  .article-item-title { font-size: 17px; }
  .manual-content table { display: block; overflow-x: auto; }
}

/* ==========================================================================
   17. Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .hero .container { flex-direction: column; text-align: center; gap: 40px; }
  .hero-visual { flex: none; }
  .hero-actions { justify-content: center; }
  .hero-stats { justify-content: center; }
  .hero-title { font-size: 40px; }
  .hero-desc { max-width: 100%; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-scroll { max-width: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
  .pricing-grid { grid-template-columns: 1fr; max-width: 400px; }
  .pricing-card.popular { transform: none; }
  .pricing-card.popular:hover { transform: translateY(-4px); }
  .values-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-grid { grid-template-columns: 1fr; }
  .feature-detail-list { grid-template-columns: 1fr; }
  .pricing-contact-card { flex-direction: column; text-align: center; gap: 24px; padding: 36px 28px; }
  .pricing-contact-tags { justify-content: center; }
}
@media (max-width: 768px) {
  .calc-layout { grid-template-columns: 1fr; }
  .faq-quick-list { flex-direction: column; align-items: center; }
  .faq-q { padding: 16px 18px; gap: 12px; }
  .faq-q > span:nth-child(2) { font-size: 14px; }
  .faq-a { padding: 0 18px; }
  .faq-item.is-open .faq-a { padding: 0 18px 18px; }
  .faq-cta-card { flex-direction: column; text-align: center; padding: 40px 28px; }
  .faq-cta-actions { flex-direction: column; width: 100%; }

  .faq-cta-actions .btn { width: 100%; justify-content: center; }
}