/* ========== Reset & Base ========== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: #0a0e1a;
  color: #e0e0e0;
  line-height: 1.7;
  overflow-x: hidden;
}
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
img { max-width: 100%; display: block; }

/* ========== CSS Variables ========== */
:root {
  --gold: #d4a853;
  --gold-light: #f0d48a;
  --blue: #3b82f6;
  --blue-light: #60a5fa;
  --dark-bg: #0a0e1a;
  --dark-card: #111827;
  --dark-card2: #1a2236;
  --border: rgba(212, 168, 83, 0.15);
  --text-primary: #f0f0f0;
  --text-secondary: #9ca3af;
  --max-width: 1200px;
  --nav-height: 72px;
}

/* ========== Scrollbar ========== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark-bg); }
::-webkit-scrollbar-thumb { background: var(--gold); border-radius: 3px; }

/* ========== Animations ========== */
.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.fade-in-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}
.fade-in-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ========== Navigation ========== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}
.navbar.scrolled {
  background: rgba(10, 14, 26, 0.98);
  box-shadow: 0 4px 30px rgba(0,0,0,0.4);
}
.nav-inner {
  width: 100%;
  max-width: var(--max-width);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-size: 22px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 3px;
  text-decoration: none;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}
.nav-links a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: color 0.3s;
  position: relative;
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--gold);
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width 0.3s;
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}
.nav-cta {
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--gold), #c49a3c);
  color: #0a0e1a !important;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.3s;
  -webkit-text-fill-color: #0a0e1a !important;
}
.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(212, 168, 83, 0.35);
}
.nav-cta::after { display: none !important; }

/* Mobile menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--gold);
  transition: all 0.3s;
}

/* ========== Hero Section ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: url('images/hero-bg.jpg') center center / cover no-repeat;
  filter: brightness(0.4);
}
.hero-overlay {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(180deg, rgba(10,14,26,0.6) 0%, rgba(10,14,26,0.85) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: 0 24px;
}
.hero-badge {
  display: inline-block;
  padding: 8px 24px;
  border: 1px solid var(--gold);
  border-radius: 50px;
  font-size: 13px;
  color: var(--gold);
  margin-bottom: 32px;
  letter-spacing: 2px;
  animation: pulse-border 3s infinite;
}
@keyframes pulse-border {
  0%, 100% { border-color: var(--gold); box-shadow: 0 0 0 0 rgba(212,168,83,0.2); }
  50% { border-color: var(--gold-light); box-shadow: 0 0 20px 0 rgba(212,168,83,0.15); }
}
.hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 24px;
  background: linear-gradient(135deg, #ffffff 0%, var(--gold-light) 50%, var(--gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-subtitle {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--text-secondary);
  margin-bottom: 48px;
  line-height: 1.8;
}
.hero-subtitle span {
  color: var(--gold);
  font-weight: 600;
}
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}
.hero-stat {
  text-align: center;
}
.hero-stat-number {
  font-size: clamp(36px, 4vw, 52px);
  font-weight: 800;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.hero-stat-label {
  font-size: 14px;
  color: var(--text-secondary);
  margin-top: 4px;
}
.hero-cta {
  display: inline-block;
  padding: 16px 48px;
  background: linear-gradient(135deg, var(--gold), #c49a3c);
  color: #0a0e1a;
  font-size: 18px;
  font-weight: 700;
  border-radius: 12px;
  transition: all 0.3s;
  box-shadow: 0 4px 25px rgba(212, 168, 83, 0.3);
}
.hero-cta:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 40px rgba(212, 168, 83, 0.5);
}

/* ========== Section Common ========== */
section {
  padding: 100px 24px;
}
.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
}
.section-header {
  text-align: center;
  margin-bottom: 64px;
}
.section-tag {
  display: inline-block;
  padding: 6px 20px;
  border: 1px solid var(--gold);
  border-radius: 50px;
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.section-title {
  font-size: clamp(28px, 3.5vw, 42px);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.section-title em {
  font-style: normal;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.section-desc {
  font-size: 16px;
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

/* ========== Pain Points ========== */
#pain-points {
  background: linear-gradient(180deg, var(--dark-bg) 0%, #0f1525 100%);
}
.pain-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.pain-card {
  background: var(--dark-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 40px 32px;
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
}
.pain-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gold), var(--blue));
  opacity: 0;
  transition: opacity 0.4s;
}
.pain-card:hover {
  transform: translateY(-8px);
  border-color: rgba(212,168,83,0.3);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.pain-card:hover::before { opacity: 1; }
.pain-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
}
.pain-card:nth-child(1) .pain-icon { background: rgba(212,168,83,0.12); }
.pain-card:nth-child(2) .pain-icon { background: rgba(59,130,246,0.12); }
.pain-card:nth-child(3) .pain-icon { background: rgba(168,85,247,0.12); }
.pain-role {
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 8px;
}
.pain-role-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.pain-list li {
  position: relative;
  padding: 10px 0 10px 24px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.pain-list li:last-child { border-bottom: none; }
.pain-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 18px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold);
  opacity: 0.6;
}

/* ========== Services ========== */
#services {
  background: #0f1525;
}
.service-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.service-card {
  background: linear-gradient(160deg, var(--dark-card2) 0%, var(--dark-card) 100%);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 48px 36px;
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
}
.service-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(212,168,83,0.06) 0%, transparent 70%);
  transition: all 0.4s;
}
.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(212,168,83,0.3);
  box-shadow: 0 24px 60px rgba(0,0,0,0.3);
}
.service-card:hover::after {
  top: -30%;
  right: -30%;
}
.service-icon {
  width: 64px;
  height: 64px;
  border-radius: 18px;
  background: linear-gradient(135deg, rgba(212,168,83,0.15), rgba(59,130,246,0.1));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin-bottom: 24px;
  position: relative;
  z-index: 1;
}
.service-name {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  position: relative;
  z-index: 1;
}
.service-tagline {
  font-size: 14px;
  color: var(--gold);
  margin-bottom: 20px;
  font-weight: 500;
  position: relative;
  z-index: 1;
}
.service-desc {
  font-size: 15px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.8;
  position: relative;
  z-index: 1;
}
.service-features {
  position: relative;
  z-index: 1;
}
.service-features li {
  padding: 6px 0 6px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  position: relative;
}
.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-weight: 700;
}
.service-price {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.06);
  position: relative;
  z-index: 1;
}
.service-price .price {
  font-size: 28px;
  font-weight: 800;
  color: var(--gold);
}
.service-price .price-unit {
  font-size: 14px;
  color: var(--text-secondary);
  font-weight: 400;
}
.service-price .price-note {
  font-size: 13px;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ========== Advantages ========== */
#advantages {
  background: linear-gradient(180deg, #0f1525 0%, var(--dark-bg) 100%);
}
.adv-highlight {
  text-align: center;
  margin-bottom: 64px;
}
.adv-highlight-text {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.6;
}
.adv-highlight-text em {
  font-style: normal;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.adv-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}
.adv-item {
  text-align: center;
  padding: 36px 20px;
  background: var(--dark-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  transition: all 0.3s;
}
.adv-item:hover {
  transform: translateY(-4px);
  border-color: rgba(212,168,83,0.3);
}
.adv-item-icon {
  font-size: 40px;
  margin-bottom: 16px;
}
.adv-item-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
}
.adv-item-desc {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Process flow */
.process-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  flex-wrap: wrap;
  padding: 40px 0;
}
.process-step {
  text-align: center;
  padding: 24px 20px;
  position: relative;
  flex: 0 0 auto;
}
.process-step-icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(212,168,83,0.15), rgba(59,130,246,0.1));
  border: 2px solid var(--gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 32px;
  margin: 0 auto 16px;
  transition: all 0.3s;
}
.process-step:hover .process-step-icon {
  background: linear-gradient(135deg, rgba(212,168,83,0.25), rgba(59,130,246,0.2));
  transform: scale(1.1);
  box-shadow: 0 0 30px rgba(212,168,83,0.2);
}
.process-step-label {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
.process-step-desc {
  font-size: 12px;
  color: var(--text-secondary);
}
.process-arrow {
  font-size: 24px;
  color: var(--gold);
  opacity: 0.5;
  flex: 0 0 auto;
  margin: 0 8px;
}

/* ========== Cases ========== */
#cases {
  background: var(--dark-bg);
}
.case-before-after {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: center;
  margin-bottom: 64px;
  padding: 40px;
  background: var(--dark-card);
  border: 1px solid var(--border);
  border-radius: 24px;
}
.case-ba-col {
  text-align: center;
}
.case-ba-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 20px;
}
.case-ba-col.before .case-ba-title { color: #ef4444; }
.case-ba-col.after .case-ba-title { color: #22c55e; }
.case-ba-items li {
  padding: 10px 0;
  font-size: 15px;
  color: var(--text-secondary);
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.case-ba-items li:last-child { border-bottom: none; }
.case-ba-arrow {
  font-size: 48px;
  color: var(--gold);
  text-align: center;
}
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}
.testimonial-card {
  background: var(--dark-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 36px 32px;
  transition: all 0.3s;
}
.testimonial-card:hover {
  transform: translateY(-4px);
  border-color: rgba(212,168,83,0.3);
}
.testimonial-stars {
  color: var(--gold);
  font-size: 18px;
  margin-bottom: 16px;
  letter-spacing: 2px;
}
.testimonial-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 20px;
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}
.testimonial-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold), var(--blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: #fff;
  font-weight: 700;
}
.testimonial-name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}
.testimonial-role {
  font-size: 12px;
  color: var(--text-secondary);
}

/* ========== Free Software ========== */
#software {
  background: linear-gradient(180deg, var(--dark-bg) 0%, #0f1525 100%);
}
.software-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-top: 40px;
}
.software-card {
  background: var(--dark-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px 32px;
  text-align: center;
  transition: all 0.4s;
  position: relative;
  overflow: hidden;
}
.software-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--gold), var(--blue), var(--gold));
}
.software-card:hover {
  transform: translateY(-8px);
  border-color: var(--gold);
  box-shadow: 0 20px 60px rgba(212, 168, 83, 0.15);
}
.software-icon {
  font-size: 48px;
  margin-bottom: 20px;
}
.software-name {
  font-size: 22px;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 12px;
}
.software-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}
.software-features {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px;
  margin-bottom: 28px;
}
.software-features span {
  padding: 6px 16px;
  background: rgba(212, 168, 83, 0.1);
  border: 1px solid rgba(212, 168, 83, 0.2);
  border-radius: 20px;
  font-size: 12px;
  color: var(--gold);
}
.software-btn {
  display: inline-block;
  padding: 12px 32px;
  background: linear-gradient(135deg, var(--gold), #c49a3c);
  color: #0a0e1a;
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  transition: all 0.3s;
}
.software-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(212, 168, 83, 0.4);
}

/* ========== Pricing ========== */
#pricing {
  background: linear-gradient(180deg, var(--dark-bg) 0%, #0f1525 100%);
}
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.pricing-card {
  background: var(--dark-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 40px 28px;
  text-align: center;
  transition: all 0.4s;
  position: relative;
}
.pricing-card.featured {
  border-color: var(--gold);
  background: linear-gradient(160deg, rgba(212,168,83,0.08), var(--dark-card));
  transform: scale(1.05);
}
.pricing-card.featured .pricing-badge {
  display: block;
}
.pricing-badge {
  display: none;
  position: absolute;
  top: -1px;
  left: 50%;
  transform: translateX(-50%);
  padding: 6px 24px;
  background: linear-gradient(135deg, var(--gold), #c49a3c);
  color: #0a0e1a;
  font-size: 12px;
  font-weight: 700;
  border-radius: 0 0 12px 12px;
}
.pricing-card:hover {
  transform: translateY(-8px);
  border-color: rgba(212,168,83,0.4);
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}
.pricing-card.featured:hover {
  transform: scale(1.05) translateY(-8px);
}
.pricing-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 8px;
  margin-top: 12px;
}
.pricing-desc {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.pricing-amount {
  font-size: 42px;
  font-weight: 800;
  color: var(--gold);
  line-height: 1;
  margin-bottom: 4px;
}
.pricing-amount .currency {
  font-size: 20px;
  font-weight: 600;
}
.pricing-period {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
}
.pricing-features {
  text-align: left;
  margin-bottom: 32px;
}
.pricing-features li {
  padding: 8px 0 8px 20px;
  font-size: 14px;
  color: var(--text-secondary);
  position: relative;
  line-height: 1.5;
}
.pricing-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--gold);
  font-weight: 700;
}
.pricing-for {
  font-size: 13px;
  color: var(--gold);
  padding: 12px 16px;
  background: rgba(212,168,83,0.06);
  border-radius: 8px;
  margin-bottom: 20px;
}
.pricing-btn {
  display: inline-block;
  width: 100%;
  padding: 14px 24px;
  border: 2px solid var(--gold);
  color: var(--gold);
  font-size: 15px;
  font-weight: 600;
  border-radius: 12px;
  transition: all 0.3s;
  cursor: pointer;
}
.pricing-btn:hover {
  background: var(--gold);
  color: #0a0e1a;
}
.pricing-card.featured .pricing-btn {
  background: linear-gradient(135deg, var(--gold), #c49a3c);
  color: #0a0e1a;
  border-color: transparent;
}
.pricing-card.featured .pricing-btn:hover {
  box-shadow: 0 8px 30px rgba(212,168,83,0.4);
}

/* ========== B2B Pricing (传媒公司合作) ========== */
#b2b-pricing {
  background: var(--bg-dark);
  padding: 100px 0;
}
.b2b-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.b2b-card {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 32px 28px;
  transition: all 0.3s ease;
}
.b2b-card:hover {
  transform: translateY(-6px);
  border-color: rgba(212,175,55,0.3);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3);
}
.b2b-card.recommended {
  border-color: var(--gold);
  position: relative;
}
.b2b-card.recommended::before {
  content: '推荐';
  position: absolute;
  top: -12px;
  right: 24px;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  color: #000;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
}
.b2b-card-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 8px;
}
.b2b-card-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
}
.b2b-tier {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255,255,255,0.06);
  font-size: 14px;
}
.b2b-tier:last-child { border-bottom: none; }
.b2b-tier-label { color: var(--text-secondary); }
.b2b-tier-price { color: var(--text-primary); font-weight: 600; }
.b2b-tier-price .highlight { color: var(--gold); }
.b2b-note {
  margin-top: 16px;
  font-size: 13px;
  color: var(--text-secondary);
  padding: 10px 14px;
  background: rgba(212,175,55,0.08);
  border-radius: 8px;
  line-height: 1.6;
}
.b2b-batch {
  margin-top: 40px;
  padding: 24px 28px;
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
}
.b2b-batch-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--gold);
  margin-bottom: 16px;
}
.b2b-batch-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.b2b-batch-item {
  display: flex;
  justify-content: space-between;
  padding: 8px 14px;
  background: rgba(255,255,255,0.03);
  border-radius: 8px;
  font-size: 14px;
}
.b2b-batch-item .label { color: var(--text-secondary); }
.b2b-batch-item .value { color: var(--gold); font-weight: 600; }
@media (max-width: 768px) {
  .b2b-grid { grid-template-columns: 1fr; }
  .b2b-batch-grid { grid-template-columns: 1fr; }
}

/* ========== Guarantee ========== */
#guarantee {
  background: #0f1525;
}
.guarantee-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.guarantee-item {
  text-align: center;
  padding: 40px 24px;
  background: var(--dark-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  transition: all 0.3s;
}
.guarantee-item:hover {
  transform: translateY(-4px);
  border-color: rgba(212,168,83,0.3);
}
.guarantee-icon {
  font-size: 48px;
  margin-bottom: 20px;
}
.guarantee-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
}
.guarantee-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ========== After-Sales ========== */
#aftersales {
  background: linear-gradient(180deg, var(--dark-bg) 0%, #0a1020 50%, #0f1525 100%);
}
.as-process {
  background: rgba(255,215,0,0.03);
  border: 1px solid rgba(255,215,0,0.15);
  border-radius: 20px;
  padding: 40px 30px;
  margin-bottom: 40px;
}
.as-process-title {
  text-align: center;
  font-size: 1.4em;
  font-weight: 700;
  color: #ffd700;
  margin-bottom: 30px;
}
.as-steps {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}
.as-step {
  text-align: center;
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(100,181,246,0.2);
  border-radius: 16px;
  padding: 20px 15px;
  width: 160px;
  position: relative;
  transition: all 0.3s;
}
.as-step:hover {
  border-color: #ffd700;
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(255,215,0,0.1);
}
.as-step-num {
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: linear-gradient(135deg, #ffd700, #ff8c00);
  color: #0a0e27;
  font-size: 0.75em;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 10px;
}
.as-step-icon {
  font-size: 2em;
  margin: 10px 0 8px;
}
.as-step-name {
  font-size: 1em;
  font-weight: 600;
  color: #e0e6ed;
  margin-bottom: 6px;
}
.as-step-desc {
  font-size: 0.8em;
  color: #8892b0;
  line-height: 1.4;
}
.as-step-arrow {
  font-size: 1.5em;
  color: #ffd700;
  font-weight: 700;
}
.as-timeline {
  margin-bottom: 40px;
}
.as-timeline-title {
  text-align: center;
  font-size: 1.3em;
  font-weight: 700;
  color: #64b5f6;
  margin-bottom: 25px;
}
.as-timeline-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
}
.as-tl-card {
  background: rgba(100,181,246,0.05);
  border: 1px solid rgba(100,181,246,0.2);
  border-radius: 12px;
  padding: 20px 15px;
  text-align: center;
  transition: all 0.3s;
}
.as-tl-card:hover {
  border-color: #64b5f6;
  background: rgba(100,181,246,0.1);
}
.as-tl-type {
  font-size: 0.95em;
  font-weight: 600;
  color: #e0e6ed;
  margin-bottom: 10px;
}
.as-tl-time {
  font-size: 1.4em;
  font-weight: 700;
  color: #ffd700;
  margin-bottom: 8px;
}
.as-tl-method {
  font-size: 0.8em;
  color: #8892b0;
  line-height: 1.4;
}
.as-promises {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.as-promise-item {
  display: flex;
  align-items: flex-start;
  gap: 15px;
  background: rgba(255,255,255,0.03);
  border: 1px solid rgba(255,215,0,0.15);
  border-radius: 12px;
  padding: 20px;
  transition: all 0.3s;
}
.as-promise-item:hover {
  border-color: #ffd700;
  background: rgba(255,215,0,0.05);
}
.as-promise-icon {
  font-size: 1.8em;
  flex-shrink: 0;
}
.as-promise-item strong {
  display: block;
  font-size: 1.05em;
  color: #ffd700;
  margin-bottom: 5px;
}
.as-promise-item p {
  font-size: 0.9em;
  color: #8892b0;
  line-height: 1.6;
  margin: 0;
}

/* ========== FAQ ========== */
#faq {
  background: linear-gradient(180deg, #0f1525 0%, var(--dark-bg) 100%);
}
.faq-grid {
  max-width: 800px;
  margin: 0 auto;
}
.faq-item {
  border: 1px solid var(--border);
  border-radius: 16px;
  margin-bottom: 16px;
  overflow: hidden;
  transition: all 0.3s;
  background: var(--dark-card);
}
.faq-item:hover {
  border-color: rgba(212,168,83,0.3);
}
.faq-question {
  padding: 24px 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: 16px;
}
.faq-question h3 {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
}
.faq-toggle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(212,168,83,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold);
  font-size: 20px;
  transition: all 0.3s;
  flex-shrink: 0;
}
.faq-item.active .faq-toggle {
  background: var(--gold);
  color: #0a0e1a;
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}
.faq-item.active .faq-answer {
  max-height: 300px;
}
.faq-answer-inner {
  padding: 0 32px 24px;
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* ========== Contact ========== */
#contact {
  background: var(--dark-bg);
  border-top: 1px solid var(--border);
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.contact-info h2 {
  font-size: 36px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
}
.contact-info h2 em {
  font-style: normal;
  color: var(--gold);
}
.contact-info > p {
  font-size: 16px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.8;
}
.contact-items {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-item {
  display: flex;
  align-items: center;
  gap: 20px;
}
.contact-item-icon {
  width: 52px;
  height: 52px;
  border-radius: 14px;
  background: rgba(212,168,83,0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}
.contact-item-label {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 2px;
}
.contact-item-value {
  font-size: 18px;
  font-weight: 600;
  color: var(--text-primary);
}
.contact-qr {
  text-align: center;
}
.contact-qr-box {
  width: 240px;
  height: 240px;
  background: var(--dark-card);
  border: 2px dashed rgba(212,168,83,0.3);
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
  transition: all 0.3s;
 /* overflow: hidden;    ← 新增，防止图片溢出 */
}
.contact-qr-box:hover {
  border-color: var(--gold);
  background: rgba(212,168,83,0.05);
  
}.contact-qr-box img {
  width: calc(100% - 16px);
  height: calc(100% - 16px);
  object-fit: contain;
  border-radius: 14px;
  padding: 8px;
}
.contact-qr-hint {
  font-size: 13px;
  color: var(--text-secondary);
}

/* ========== Footer ========== */
.footer {
  padding: 40px 24px;
  text-align: center;
  border-top: 1px solid var(--border);
  background: var(--dark-bg);
}
.footer-brand {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gold), var(--gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
}
.footer-text {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 16px;
}
.footer-beian {
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}
.beian-link {
  font-size: 12px;
  color: var(--text-secondary);
  transition: color 0.3s;
}
.beian-link:hover {
  color: var(--gold);
}

/* ========== Notice Modal ========== */
.notice-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.notice-modal-overlay.show {
  display: flex;
  opacity: 1;
}
.notice-modal {
  background: var(--dark-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: 90%;
  max-width: 500px;
  max-height: 80vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}
.notice-modal-overlay.show .notice-modal {
  transform: scale(1);
}
.notice-modal-header {
  padding: 24px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.notice-modal-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--gold);
  display: flex;
  align-items: center;
  gap: 8px;
}
.notice-modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: var(--dark-card2);
  color: var(--text-secondary);
  border-radius: 8px;
  cursor: pointer;
  font-size: 18px;
  transition: all 0.3s;
}
.notice-modal-close:hover {
  background: rgba(212, 168, 83, 0.15);
  color: var(--gold);
}
.notice-modal-body {
  padding: 24px;
}
.notice-modal-content {
  color: var(--text-primary);
  line-height: 1.8;
  font-size: 15px;
}
.notice-modal-content p {
  margin-bottom: 12px;
}
.notice-modal-content p:last-child {
  margin-bottom: 0;
}
.notice-modal-footer {
  padding: 16px 24px 24px;
  display: flex;
  justify-content: flex-end;
}
.notice-modal-btn {
  padding: 10px 24px;
  background: linear-gradient(135deg, var(--gold), #c49a3c);
  color: #0a0e1a;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
  transition: all 0.3s;
}
.notice-modal-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(212, 168, 83, 0.35);
}

/* Notice Button in Navbar */
.nav-notice {
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--gold);
  color: var(--gold);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  margin-left: 12px;
  position: relative;
}
.nav-notice:hover {
  background: rgba(212, 168, 83, 0.15);
}
.nav-notice.badge::after {
  content: '';
  position: absolute;
  top: 4px;
  right: 4px;
  width: 8px;
  height: 8px;
  background: #ef4444;
  border-radius: 50%;
}

.nav-about {
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--blue);
  color: var(--blue);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s;
  margin-left: 12px;
  text-decoration: none;
}
.nav-about:hover {
  background: rgba(59, 130, 246, 0.15);
  border-color: var(--blue-light);
  color: var(--blue-light);
}

/* ========== Back to Top ========== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold), #c49a3c);
  color: #0a0e1a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 999;
  border: none;
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}
.back-to-top:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(212,168,83,0.4);
}

/* ========== Floating CTA ========== */
.floating-cta {
  position: fixed;
  bottom: 32px;
  left: 32px;
  padding: 14px 28px;
  background: linear-gradient(135deg, var(--gold), #c49a3c);
  color: #0a0e1a;
  font-size: 15px;
  font-weight: 700;
  border-radius: 50px;
  z-index: 999;
  box-shadow: 0 8px 30px rgba(212,168,83,0.3);
  transition: all 0.3s;
  opacity: 0;
  visibility: hidden;
}
.floating-cta.visible {
  opacity: 1;
  visibility: visible;
}
.floating-cta:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(212,168,83,0.5);
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
  .pricing-grid { grid-template-columns: repeat(2, 1fr); }
  .pricing-card.featured { transform: scale(1); }
  .pricing-card.featured:hover { transform: translateY(-8px); }
  .adv-grid { grid-template-columns: repeat(2, 1fr); }
  .guarantee-grid { grid-template-columns: repeat(2, 1fr); }
  .as-timeline-grid { grid-template-columns: repeat(2, 1fr); }
  .as-steps { gap: 15px; }
  .as-step { width: 140px; }
  .software-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --nav-height: 64px; }
  
  .nav-links { 
    display: none; 
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.98);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .menu-toggle { display: flex; }
  
  .pain-grid,
  .service-grid,
  .testimonial-grid { grid-template-columns: 1fr; }
  
  .pricing-grid { grid-template-columns: 1fr; }
  .adv-grid { grid-template-columns: 1fr 1fr; }
  .guarantee-grid { grid-template-columns: 1fr 1fr; }
  
  .case-before-after {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .case-ba-arrow { transform: rotate(90deg); }
  
  .contact-grid { grid-template-columns: 1fr; gap: 40px; }
  
  .hero-stats { gap: 24px; }
  
  .process-flow { flex-direction: column; }
  .process-arrow { transform: rotate(90deg); margin: 8px 0; }

  .as-steps { flex-direction: column; gap: 12px; }
  .as-step { width: 100%; max-width: 280px; }
  .as-step-arrow { transform: rotate(90deg); }
  .as-timeline-grid { grid-template-columns: 1fr 1fr; }
  .as-promises { grid-template-columns: 1fr; }
  
  .floating-cta { 
    left: 16px; 
    bottom: 16px; 
    padding: 12px 20px; 
    font-size: 13px; 
  }
  .back-to-top { right: 16px; bottom: 16px; width: 40px; height: 40px; }
  
  section { padding: 60px 16px; }
  
  .nav-notice {
    margin-left: 0;
    margin-top: 8px;
    width: fit-content;
  }
  
  .notice-modal {
    width: 95%;
    border-radius: 12px;
  }
  .notice-modal-header,
  .notice-modal-body,
  .notice-modal-footer {
    padding: 16px;
  }
}

@media (max-width: 480px) {
  .adv-grid { grid-template-columns: 1fr; }
  .guarantee-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: 16px; }
  .as-timeline-grid { grid-template-columns: 1fr; }
}