/* ===========================
   极速VPN - 主样式文件
   颜色体系：
   主色 #2563EB (蓝)
   辅色 #10B981 (绿)
   强调 #00D2A8 (青绿)
   中性 #F8FAFF / #64748B
   深色 #0F172A
=========================== */

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

:root {
  --primary:    #2563EB;
  --primary-dk: #1D4ED8;
  --accent:     #10B981;
  --accent-lt:  #00D2A8;
  --bg:         #F8FAFF;
  --bg-card:    #FFFFFF;
  --text:       #0F172A;
  --text-muted: #64748B;
  --border:     #E2E8F0;
  --radius:     12px;
  --radius-lg:  20px;
  --shadow:     0 4px 24px rgba(37, 99, 235, 0.08);
  --shadow-md:  0 8px 40px rgba(37, 99, 235, 0.14);
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'PingFang SC', 'Microsoft YaHei',
               'Hiragino Sans GB', 'Noto Sans CJK SC', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul, ol { list-style: none; }
button { cursor: pointer; font-family: inherit; }

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

/* ---- 通用标题块 ---- */
.section-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px; height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--accent-lt));
  margin: 0 auto 20px;
}
.section-label svg { width: 28px; height: 28px; fill: #fff; }

.section-heading {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  text-align: center;
  background: linear-gradient(135deg, var(--primary), var(--accent-lt));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 12px;
}
.section-sub {
  text-align: center;
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 48px;
}

/* ---- 按钮 ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  border: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.35);
}
.btn-primary:hover {
  background: #0da86e;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(16, 185, 129, 0.45);
}
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

/* ========================
   导航栏
======================== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(248, 250, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}
#navbar.scrolled {
  border-color: var(--border);
  box-shadow: 0 2px 16px rgba(37, 99, 235, 0.06);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
}
.nav-logo .logo-icon {
  width: 36px; height: 36px;
  background: linear-gradient(135deg, var(--primary), var(--accent-lt));
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-weight: 900; font-size: 1rem;
  letter-spacing: -1px;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--primary);
  transform: scaleX(0);
  transition: transform var(--transition);
  border-radius: 2px;
}
.nav-links a:hover { color: var(--primary); }
.nav-links a:hover::after { transform: scaleX(1); }

.nav-cta { margin-left: 16px; padding: 9px 22px; font-size: 0.88rem; }

.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* 移动端菜单 */
.nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  padding: 16px 24px 20px;
  gap: 4px;
}
.nav-mobile.open { display: flex; }
.nav-mobile a {
  padding: 10px 0;
  font-size: 0.96rem;
  font-weight: 500;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
}
.nav-mobile a:hover { color: var(--primary); }
.nav-mobile .btn { margin-top: 12px; justify-content: center; }

/* ========================
   英雄区
======================== */
#hero {
  padding-top: 120px;
  padding-bottom: 80px;
  overflow: hidden;
  position: relative;
}
#hero::before {
  content: '';
  position: absolute;
  top: -120px; right: -200px;
  width: 700px; height: 700px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.07) 0%, transparent 70%);
  pointer-events: none;
}
.hero-inner {
  display: flex;
  align-items: center;
  gap: 60px;
}
.hero-content { flex: 1; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 24px;
}
.hero-badge::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--text);
}
.hero-title .accent {
  background: linear-gradient(135deg, var(--primary), var(--accent-lt));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.hero-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  line-height: 1.7;
}
.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}
.hero-trust {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
}
.hero-trust-dot {
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--border);
}

.hero-image {
  flex: 0 0 480px;
  position: relative;
}
.hero-image img {
  width: 100%;
  border-radius: var(--radius-lg);
  filter: drop-shadow(0 24px 60px rgba(37, 99, 235, 0.18));
  animation: float 5s ease-in-out infinite;
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* ========================
   特性区
======================== */
#features {
  padding: 88px 0;
  background: var(--bg-card);
}
.features-header { text-align: center; margin-bottom: 56px; }

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: rgba(37, 99, 235, 0.2);
}
.feature-icon {
  width: 52px; height: 52px;
  border-radius: var(--radius);
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 16px;
}
.feature-icon svg { width: 26px; height: 26px; }
.icon-blue { background: rgba(37, 99, 235, 0.12); color: var(--primary); }
.icon-green { background: rgba(16, 185, 129, 0.12); color: var(--accent); }
.icon-purple { background: rgba(139, 92, 246, 0.12); color: #8B5CF6; }
.icon-orange { background: rgba(249, 115, 22, 0.12); color: #F97316; }

.feature-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}
.feature-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.6;
}
.feature-tags {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.feature-tag {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  color: var(--text-muted);
  background: var(--bg-card);
  padding: 7px 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
}
.feature-tag svg { width: 14px; height: 14px; color: var(--accent); flex-shrink: 0; }

/* ========================
   数据统计区
======================== */
#stats {
  padding: 88px 0;
  background: linear-gradient(135deg, #1e3a8a 0%, #2563EB 50%, #1D4ED8 100%);
  position: relative;
  overflow: hidden;
}
#stats::before {
  content: '';
  position: absolute;
  bottom: -100px; right: -100px;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
  pointer-events: none;
}
#stats::after {
  content: '';
  position: absolute;
  top: -80px; left: -80px;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: rgba(0, 210, 168, 0.08);
  pointer-events: none;
}
.stats-header { text-align: center; margin-bottom: 56px; }
.stats-header .section-heading { color: #fff; -webkit-text-fill-color: #fff; }
.stats-header .section-sub { color: rgba(255,255,255,0.7); }

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.stat-card {
  background: rgba(255,255,255,0.12);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: var(--radius-lg);
  padding: 40px 32px;
  text-align: center;
  color: #fff;
  transition: transform var(--transition), background var(--transition);
}
.stat-card:hover {
  transform: translateY(-4px);
  background: rgba(255,255,255,0.18);
}
.stat-icon {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: rgba(255,255,255,0.15);
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
}
.stat-icon svg { width: 26px; height: 26px; fill: #fff; }
.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 8px;
}
.stat-desc { font-size: 0.9rem; opacity: 0.8; }
.stat-divider { width: 48px; height: 3px; background: rgba(255,255,255,0.3); margin: 16px auto 0; border-radius: 3px; }

.stats-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
}
.stats-note svg { width: 16px; height: 16px; fill: var(--accent-lt); }

/* ========================
   使用场景
======================== */
#scenarios {
  padding: 88px 0;
  background: var(--bg);
}
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.scenario-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}
.scenario-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(37, 99, 235, 0.2);
}
.scenario-icon {
  width: 64px; height: 64px;
  border-radius: 16px;
  display: flex; align-items: center; justify-content: center;
  margin: 0 auto 20px;
}
.scenario-icon svg { width: 30px; height: 30px; }
.si-blue { background: linear-gradient(135deg, #EFF6FF, #DBEAFE); color: var(--primary); }
.si-pink { background: linear-gradient(135deg, #FDF4FF, #FAE8FF); color: #A855F7; }
.si-yellow { background: linear-gradient(135deg, #FFFBEB, #FEF3C7); color: #F59E0B; }
.si-green { background: linear-gradient(135deg, #F0FDF4, #DCFCE7); color: var(--accent); }

.scenario-card h3 { font-size: 1rem; font-weight: 700; margin-bottom: 10px; }
.scenario-card p { font-size: 0.85rem; color: var(--text-muted); line-height: 1.6; }

/* ========================
   价格方案
======================== */
#pricing {
  padding: 88px 0;
  background: var(--bg-card);
  position: relative;
  overflow: hidden;
}
#pricing::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse at top, rgba(37, 99, 235, 0.04) 0%, transparent 60%);
  pointer-events: none;
}
.pricing-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.2);
  color: var(--accent);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 999px;
  margin: 0 auto 12px;
  width: fit-content;
  display: flex;
}
.pricing-badge svg { width: 14px; height: 14px; fill: var(--accent); }

.pricing-grid {
  display: flex;
  gap: 16px;
  align-items: stretch;
}
.price-card {
  flex: 1;
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 22px;
  position: relative;
  transition: transform var(--transition), box-shadow var(--transition);
}
.price-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.price-card.featured {
  background: var(--bg-card);
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08), var(--shadow-md);
  transform: scale(1.02);
}
.price-card.featured:hover { transform: scale(1.02) translateY(-4px); }
.price-card.free-plan {
  border-color: var(--accent);
  border-style: dashed;
}

.price-badge {
  position: absolute;
  top: -12px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg, var(--primary), var(--accent-lt));
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 999px;
  white-space: nowrap;
}
.price-badge.green {
  background: linear-gradient(135deg, var(--accent), var(--accent-lt));
}

.price-name {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
}
.price-amount {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin-bottom: 4px;
}
.price-amount .num {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text);
}
.price-amount .period {
  font-size: 0.82rem;
  color: var(--text-muted);
}
.price-save {
  display: inline-block;
  background: rgba(16, 185, 129, 0.12);
  color: var(--accent);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 20px;
}

.price-features {
  margin: 20px 0 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.price-features li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.price-features li svg { width: 15px; height: 15px; color: var(--accent); flex-shrink: 0; }
.price-features li.striked { opacity: 0.4; text-decoration: line-through; }
.price-features li.striked svg { color: var(--text-muted); }

.btn-price {
  display: block;
  width: 100%;
  text-align: center;
  padding: 11px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 600;
  transition: transform var(--transition), background var(--transition);
  border: none;
}
.btn-price-primary {
  background: var(--primary);
  color: #fff;
}
.btn-price-primary:hover { background: var(--primary-dk); transform: translateY(-1px); }
.btn-price-ghost {
  background: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}
.btn-price-ghost:hover { background: rgba(37, 99, 235, 0.06); }
.btn-price-accent {
  background: var(--accent);
  color: #fff;
}
.btn-price-accent:hover { background: #0da86e; }

.pricing-guarantees {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  margin-top: 40px;
  flex-wrap: wrap;
}
.guarantee-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
}
.guarantee-item svg { width: 18px; height: 18px; color: var(--accent); }

/* ========================
   用户评价
======================== */
#reviews {
  padding: 88px 0;
  background: var(--bg);
}
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}
.review-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform var(--transition), box-shadow var(--transition);
}
.review-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.review-top {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}
.review-avatar {
  width: 48px; height: 48px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
}
.av-blue { background: linear-gradient(135deg, var(--primary), var(--accent-lt)); }
.av-green { background: linear-gradient(135deg, var(--accent), #34d399); }
.av-purple { background: linear-gradient(135deg, #8B5CF6, #a78bfa); }

.review-info { flex: 1; }
.review-name { font-weight: 700; font-size: 0.95rem; }
.review-role { font-size: 0.8rem; color: var(--text-muted); }

.review-verified {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
}
.review-verified svg { width: 13px; height: 13px; fill: var(--accent); }

.review-stars {
  display: flex;
  gap: 3px;
  margin-bottom: 14px;
}
.review-stars svg { width: 16px; height: 16px; fill: #F59E0B; }

.review-text {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
  font-style: italic;
}

.reviews-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.82rem;
}
.reviews-note svg { width: 15px; height: 15px; fill: var(--accent); }

/* ========================
   常见问题
======================== */
#faq {
  padding: 88px 0;
  background: var(--bg-card);
}
.faq-list {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.faq-item {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition);
}
.faq-item.open { border-color: rgba(37, 99, 235, 0.3); }

.faq-question {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 18px 20px;
  cursor: pointer;
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  font-family: inherit;
}
.faq-q-prefix {
  width: 28px; height: 28px;
  border-radius: 6px;
  background: rgba(37, 99, 235, 0.1);
  color: var(--primary);
  font-weight: 800;
  font-size: 0.82rem;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.faq-question h3 {
  flex: 1;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text);
}
.faq-arrow {
  width: 20px; height: 20px;
  color: var(--text-muted);
  transition: transform var(--transition);
  flex-shrink: 0;
}
.faq-item.open .faq-arrow { transform: rotate(180deg); }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.25s ease;
}
.faq-answer-inner {
  padding: 0 20px 18px 60px;
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.8;
}
.faq-item.open .faq-answer { max-height: 200px; }

.faq-cta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 32px;
  font-size: 0.88rem;
  color: var(--text-muted);
}
.faq-cta svg { width: 16px; height: 16px; color: var(--primary); }

/* ========================
   CTA 区
======================== */
#cta {
  padding: 88px 0;
  background: linear-gradient(135deg, #1e3a8a 0%, #2563EB 55%, #1a6d5a 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}
#cta::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.cta-inner { position: relative; z-index: 1; }
.cta-title {
  font-size: clamp(1.6rem, 4vw, 2.6rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}
.cta-desc {
  font-size: 1rem;
  color: rgba(255,255,255,0.75);
  max-width: 560px;
  margin: 0 auto 40px;
  line-height: 1.7;
}
.cta-points {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 28px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.cta-point {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.85);
  font-size: 0.88rem;
  font-weight: 500;
}
.cta-point svg { width: 16px; height: 16px; fill: var(--accent-lt); }

.cta-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.btn-cta-white {
  background: #fff;
  color: var(--primary);
  box-shadow: 0 4px 20px rgba(0,0,0,0.2);
}
.btn-cta-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}
.btn-cta-outline {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255,255,255,0.4);
}
.btn-cta-outline:hover {
  background: rgba(255,255,255,0.1);
  transform: translateY(-2px);
}

.cta-trust {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.6);
  font-size: 0.8rem;
}
.cta-trust-item svg { width: 15px; height: 15px; fill: rgba(255,255,255,0.5); }

/* ========================
   页脚
======================== */
footer {
  background: #0F172A;
  color: rgba(255,255,255,0.6);
  padding: 60px 0 32px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
.footer-brand .nav-logo { margin-bottom: 16px; color: #fff; }
.footer-brand p {
  font-size: 0.85rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.5);
  margin-bottom: 20px;
}
.footer-col h4 {
  font-size: 0.88rem;
  font-weight: 700;
  color: rgba(255,255,255,0.85);
  margin-bottom: 16px;
}
.footer-col ul { display: flex; flex-direction: column; gap: 10px; }
.footer-col ul li a {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}
.footer-col ul li a:hover { color: rgba(255,255,255,0.9); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-bottom p { font-size: 0.8rem; color: rgba(255,255,255,0.35); }
.footer-bottom-links {
  display: flex;
  gap: 20px;
}
.footer-bottom-links a {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
  transition: color var(--transition);
}
.footer-bottom-links a:hover { color: rgba(255,255,255,0.7); }

.footer-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  color: var(--accent);
}
.footer-status::before {
  content: '';
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2.5s infinite;
}

/* ========================
   滚动进场动画
======================== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ========================
   响应式适配
======================== */
@media (max-width: 1024px) {
  .hero-image { flex: 0 0 380px; }
  .pricing-grid { flex-wrap: wrap; }
  .price-card { flex: 1 1 calc(33% - 12px); min-width: 200px; }
  .price-card.featured { transform: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

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

  .hero-inner { flex-direction: column; text-align: center; }
  .hero-actions { justify-content: center; }
  .hero-trust { justify-content: center; flex-wrap: wrap; }
  .hero-image { flex: none; width: 100%; max-width: 360px; }

  .features-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr; }
  .scenarios-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid { grid-template-columns: 1fr; }
  .pricing-grid { flex-direction: column; }
  .price-card.featured { transform: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 480px) {
  .scenarios-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-actions .btn { justify-content: center; }
  .cta-actions { flex-direction: column; align-items: stretch; }
  .cta-actions .btn { justify-content: center; }
}