/* 聚盟云机场 - 商务出海·企业出海与跨境风 Clean Light SaaS Style */

:root {
  --bg-main: #FFFFFF;
  --bg-section: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-card-hover: #F1F5F9;
  --primary-teal: #0D9488;
  --primary-teal-hover: #0F766E;
  --primary-teal-light: rgba(13, 148, 136, 0.08);
  --primary-blue: #0369A1;
  --accent-amber: #F59E0B;
  --accent-amber-light: rgba(245, 158, 11, 0.12);
  --border-light: #E2E8F0;
  --border-active: #0D9488;
  --text-heading: #0F172A;
  --text-body: #475569;
  --text-muted: #94A3B8;
  --status-green: #10B981;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "Fira Code", "Courier New", Courier, monospace;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 20px -2px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 12px 35px -4px rgba(15, 23, 42, 0.1);
  --radius-xl: 20px;
  --radius-lg: 14px;
  --radius-md: 10px;
  --radius-sm: 6px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-family);
  background-color: var(--bg-main);
  color: var(--text-body);
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
  background-color: var(--bg-main);
}

/* Background Canvas */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: -1;
  pointer-events: none;
}

a {
  color: var(--primary-teal);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-teal-hover);
}

/* Container */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Top Announcement Bar */
.announcement-bar {
  background: linear-gradient(90deg, #0F766E, #0369A1);
  color: #FFFFFF;
  text-align: center;
  padding: 10px 16px;
  font-size: 0.92rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  font-weight: 500;
}

.announcement-badge {
  background: var(--accent-amber);
  color: #0F172A;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 0.76rem;
  letter-spacing: 0.5px;
}

/* Header & Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  padding: 16px 0;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.45rem;
  font-weight: 900;
  color: var(--text-heading);
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, var(--primary-teal), #0D9488);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.3);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  color: #334155;
  font-size: 0.98rem;
  font-weight: 600;
  position: relative;
  padding: 6px 0;
  transition: var(--transition);
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-teal);
}

.nav-link:hover::after, .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--primary-teal);
  border-radius: 2px;
}

/* Button Styling */
.btn-cta {
  background: linear-gradient(135deg, var(--primary-teal), #0F766E);
  color: #FFFFFF;
  font-weight: 700;
  padding: 12px 28px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  box-shadow: 0 4px 14px rgba(13, 148, 136, 0.25);
  font-size: 0.98rem;
}

.btn-cta:hover {
  background: linear-gradient(135deg, #0F766E, #115E59);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(13, 148, 136, 0.4);
  color: #FFFFFF;
}

.btn-amber {
  background: linear-gradient(135deg, var(--accent-amber), #D97706);
  color: #0F172A;
  font-weight: 800;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
}

.btn-amber:hover {
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.5);
}

.btn-outline {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  color: var(--text-heading);
  font-weight: 600;
  padding: 12px 28px;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.btn-outline:hover {
  border-color: var(--primary-teal);
  color: var(--primary-teal);
  background: var(--bg-section);
}

/* Hero Section */
.hero-section {
  padding: 80px 0 60px;
  text-align: center;
}

.hero-pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--primary-teal-light);
  border: 1px solid rgba(13, 148, 136, 0.2);
  padding: 8px 24px;
  border-radius: 50px;
  color: var(--primary-teal);
  font-size: 0.92rem;
  font-weight: 700;
  margin-bottom: 28px;
}

.pulse-green-dot {
  width: 9px;
  height: 9px;
  background: var(--status-green);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--status-green);
  animation: pulseDot 1.5s infinite alternate;
}

@keyframes pulseDot {
  from { opacity: 0.5; }
  to { opacity: 1; transform: scale(1.2); }
}

.hero-title {
  font-size: 3.6rem;
  font-weight: 900;
  color: var(--text-heading);
  line-height: 1.2;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.gradient-title-text {
  color: var(--primary-teal);
}

.hero-desc {
  font-size: 1.18rem;
  color: var(--text-body);
  max-width: 880px;
  margin: 0 auto 40px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 60px;
}

/* Stats Card */
.hero-stats-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 36px 40px;
  max-width: 1060px;
  margin: 0 auto 60px;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  box-shadow: var(--shadow-lg);
}

.stat-item {
  text-align: center;
}

.stat-value {
  font-size: 3rem;
  font-weight: 900;
  color: var(--primary-teal);
  font-family: var(--font-mono);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.95rem;
  color: var(--text-body);
  font-weight: 600;
}

/* Section Styling */
.section {
  padding: 90px 0;
  position: relative;
}

.section-gray {
  background-color: var(--bg-section);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.section-header {
  text-align: center;
  max-width: 780px;
  margin: 0 auto 60px;
}

.section-tag {
  color: var(--primary-teal);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
  font-weight: 700;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.25;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-body);
}

/* Business Matrix Cards */
.matrix-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.matrix-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
  position: relative;
}

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

.matrix-icon {
  width: 56px;
  height: 56px;
  background: var(--primary-teal-light);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  color: var(--primary-teal);
  margin-bottom: 24px;
}

.matrix-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 12px;
}

.matrix-desc {
  font-size: 0.98rem;
  color: var(--text-body);
  margin-bottom: 20px;
}

.matrix-badge-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.matrix-tag {
  background: #F1F5F9;
  color: #334155;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 6px;
}

/* IP Quality Score Metrics */
.ip-score-box {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lg);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 30px;
  text-align: center;
}

.ip-score-item {
  border-right: 1px solid var(--border-light);
  padding-right: 20px;
}

.ip-score-item:last-child {
  border-right: none;
}

.ip-score-num {
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--primary-teal);
  font-family: var(--font-mono);
  margin-bottom: 8px;
}

.ip-score-title {
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 6px;
}

.ip-score-sub {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* Radar & Node Monitor */
.radar-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 32px;
  align-items: center;
}

.radar-wrapper {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  box-shadow: var(--shadow-md);
}

.radar-circle {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  border: 1px solid rgba(13, 148, 136, 0.4);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #F8FAFC;
}

.radar-sweep {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: conic-gradient(from 0deg, transparent 0deg 300deg, rgba(13, 148, 136, 0.3) 360deg);
  animation: radarScan 3.5s linear infinite;
}

@keyframes radarScan {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.radar-status-text {
  margin-top: 24px;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--primary-teal);
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
}

.node-list-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 18px;
}

.node-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 18px 22px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.node-card:hover {
  transform: translateY(-2px);
  border-color: var(--primary-teal);
  box-shadow: var(--shadow-md);
}

.node-info {
  display: flex;
  align-items: center;
  gap: 14px;
}

.node-flag { font-size: 1.6rem; }
.node-name { font-weight: 700; color: var(--text-heading); font-size: 0.98rem; }
.node-proto { font-size: 0.78rem; color: var(--primary-teal); font-family: var(--font-mono); }

.node-ping {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--status-green);
  font-weight: 700;
}

/* Subscription Generator Card */
.config-generator-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 44px;
  box-shadow: var(--shadow-lg);
}

.tab-nav {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 14px;
  overflow-x: auto;
}

.tab-btn {
  background: transparent;
  border: none;
  color: var(--text-body);
  font-weight: 600;
  font-size: 1rem;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
}

.tab-btn.active, .tab-btn:hover {
  color: var(--primary-teal);
  background: var(--primary-teal-light);
}

.sub-input-group {
  display: flex;
  gap: 14px;
  margin-bottom: 24px;
}

.sub-input {
  flex: 1;
  background: #F8FAFC;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  color: var(--primary-teal);
  font-family: var(--font-mono);
  font-size: 0.98rem;
}

.sub-input:focus {
  outline: none;
  border-color: var(--primary-teal);
}

/* Pricing Grid */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
  align-items: stretch;
}

.pricing-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
  box-shadow: var(--shadow-md);
}

.pricing-card.popular {
  border-color: var(--primary-teal);
  box-shadow: var(--shadow-lg);
  transform: scale(1.04);
}

.popular-badge {
  position: absolute;
  top: -16px;
  right: 28px;
  background: var(--accent-amber);
  color: #0F172A;
  font-size: 0.8rem;
  font-weight: 800;
  padding: 5px 16px;
  border-radius: 20px;
  text-transform: uppercase;
}

.pricing-plan-name {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--text-heading);
  margin-bottom: 10px;
}

.pricing-price {
  font-size: 2.8rem;
  font-weight: 900;
  color: var(--text-heading);
  margin-bottom: 24px;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.price-unit {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

.pricing-features {
  list-style: none;
  margin-bottom: 36px;
  flex: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.98rem;
  color: var(--text-body);
}

.feature-check {
  color: var(--primary-teal);
  font-weight: 900;
}

/* FAQ Accordion */
.faq-grid {
  max-width: 880px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.faq-item {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  padding: 22px 28px;
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-heading);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-answer {
  padding: 0 28px 24px;
  color: var(--text-body);
  font-size: 0.98rem;
  display: none;
  border-top: 1px solid var(--border-light);
  padding-top: 18px;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  display: block;
}

.faq-icon {
  transition: var(--transition);
  color: var(--primary-teal);
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

/* Articles Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 30px;
}

.article-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.article-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-teal);
  box-shadow: var(--shadow-md);
}

.article-category {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--primary-teal);
  margin-bottom: 12px;
  font-weight: 700;
}

.article-title-link {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.45;
  margin-bottom: 14px;
  display: block;
}

.article-title-link:hover {
  color: var(--primary-teal);
}

.article-desc {
  font-size: 0.95rem;
  color: var(--text-body);
  margin-bottom: 24px;
  flex: 1;
}

.article-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-light);
  padding-top: 16px;
}

/* Article Standalone View */
.article-page {
  padding: 60px 0;
  max-width: 920px;
  margin: 0 auto;
}

.article-header {
  margin-bottom: 40px;
  text-align: center;
}

.article-main-title {
  font-size: 2.6rem;
  font-weight: 900;
  color: var(--text-heading);
  line-height: 1.25;
  margin-bottom: 20px;
}

.article-body-content {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  padding: 44px;
  font-size: 1.08rem;
  line-height: 1.85;
  color: var(--text-body);
  box-shadow: var(--shadow-lg);
}

.article-body-content h2 {
  font-size: 1.75rem;
  color: var(--text-heading);
  margin: 38px 0 18px;
  border-left: 4px solid var(--primary-teal);
  padding-left: 16px;
}

.article-body-content h3 {
  font-size: 1.35rem;
  color: var(--primary-teal);
  margin: 26px 0 14px;
}

.article-body-content p { margin-bottom: 20px; }
.article-body-content ul, .article-body-content ol { margin: 0 0 24px 28px; }
.article-body-content li { margin-bottom: 10px; }

.article-body-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
}

.article-body-content th, .article-body-content td {
  border: 1px solid var(--border-light);
  padding: 14px 18px;
  text-align: left;
}

.article-body-content th {
  background: var(--bg-section);
  color: var(--text-heading);
}

/* User Reviews Grid */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 28px;
}

.review-card {
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-sm);
}

.review-user {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.user-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-teal), #0F766E);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #FFFFFF;
  font-size: 1.2rem;
}

.user-name { font-weight: 700; color: var(--text-heading); font-size: 1.05rem; }
.user-role { font-size: 0.82rem; color: var(--text-muted); }
.review-text { font-size: 0.98rem; color: var(--text-body); line-height: 1.7; }

/* Footer */
.footer {
  background: #0F172A;
  color: #94A3B8;
  padding: 70px 0 35px;
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 50px;
}

.footer-logo-desc {
  font-size: 0.92rem;
  margin-top: 14px;
  max-width: 340px;
  line-height: 1.7;
}

.footer-title {
  color: #FFFFFF;
  font-weight: 700;
  margin-bottom: 18px;
  font-size: 1rem;
}

.footer-links { list-style: none; }
.footer-links li { margin-bottom: 12px; }
.footer-links a { color: #94A3B8; }
.footer-links a:hover { color: var(--primary-teal); }

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 28px;
}

/* Responsive Rules */
@media (max-width: 1024px) {
  .hero-title { font-size: 2.8rem; }
  .hero-stats-card { grid-template-columns: repeat(2, 1fr); }
  .radar-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .ip-score-box { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hero-title { font-size: 2.1rem; }
  .hero-stats-card { grid-template-columns: 1fr 1fr; padding: 24px; }
  .stat-value { font-size: 2.2rem; }
  .section-title { font-size: 1.8rem; }
  .footer-grid { grid-template-columns: 1fr; }
  .sub-input-group { flex-direction: column; }
  .ip-score-box { grid-template-columns: 1fr; }
  .ip-score-item { border-right: none; border-bottom: 1px solid var(--border-light); padding-bottom: 20px; }
}