/* 猫七七机场 (neko77.mom) 官方落地页样式文件 */
:root {
  --primary: #4f46e5;
  --primary-hover: #4338ca;
  --purple-grad-start: #3730a3;
  --purple-grad-mid: #4f46e5;
  --purple-grad-end: #7c3aed;
  --accent-gold: #f59e0b;
  --accent-teal: #10b981;
  --accent-cyan: #06b6d4;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --bg-light: #f8fafc;
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 20px -2px rgba(79, 70, 229, 0.12);
  --shadow-lg: 0 20px 30px -10px rgba(79, 70, 229, 0.2);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-family);
  color: var(--text-main);
  background-color: var(--bg-light);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120' viewBox='0 0 50 50'%3E%3Cpath d='M25 28 C16 28 12 36 25 42 C38 36 34 28 25 28 Z M9 18 C6 18 6 12 9 12 C12 12 12 18 9 18 Z M20 11 C17 11 17 5 20 5 C23 5 23 11 20 11 Z M30 11 C27 11 27 5 30 5 C33 5 33 11 30 11 Z M41 18 C38 18 38 12 41 12 C44 12 44 18 41 18 Z' fill='rgba(79,70,229,0.03)'/%3E%3C/svg%3E");
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

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

/* Header & Nav */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(55, 48, 163, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 20px;
  font-weight: 800;
  color: #ffffff;
  letter-spacing: -0.5px;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
}

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

.nav-links a {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  font-size: 15px;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: #ffffff;
}

.nav-btns {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-nav-login {
  background: rgba(255, 255, 255, 0.95);
  color: var(--primary);
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-nav-login:hover {
  background: #ffffff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-nav-register {
  background: linear-gradient(135deg, #f59e0b, #d97706);
  color: #ffffff;
  padding: 8px 20px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s ease;
  box-shadow: 0 4px 14px rgba(245, 158, 11, 0.4);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-nav-register:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(245, 158, 11, 0.6);
}

.btn-recommend {
  background: rgba(6, 182, 212, 0.2);
  border: 1px solid rgba(6, 182, 212, 0.6);
  color: #00f2fe;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-recommend:hover {
  background: rgba(6, 182, 212, 0.35);
  color: #ffffff;
  transform: translateY(-1px);
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: white;
  font-size: 24px;
  cursor: pointer;
}

/* Hero Section */
.hero-section {
  background: linear-gradient(135deg, var(--purple-grad-start) 0%, var(--purple-grad-mid) 45%, var(--purple-grad-end) 100%);
  color: #ffffff;
  padding: 60px 0 100px;
  position: relative;
  overflow: hidden;
}

/* 装饰背景猫爪印样式 */
.cat-paws-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.cat-paws-bg .paw {
  position: absolute;
  width: 54px;
  height: 54px;
  filter: drop-shadow(0 4px 10px rgba(0,0,0,0.15));
  animation: pawPulse 4s ease-in-out infinite alternate;
}

.paw-1 { top: 12%; left: 4%; transform: rotate(-20deg) scale(1.1); animation-delay: 0s; }
.paw-2 { top: 25%; right: 6%; transform: rotate(25deg) scale(1.3); animation-delay: 0.8s; }
.paw-3 { bottom: 25%; left: 8%; transform: rotate(-35deg) scale(1); animation-delay: 1.6s; }
.paw-4 { top: 65%; right: 12%; transform: rotate(15deg) scale(1.2); animation-delay: 2.4s; }
.paw-5 { top: 8%; left: 45%; transform: rotate(40deg) scale(0.9); animation-delay: 1.2s; }
.paw-6 { bottom: 18%; right: 42%; transform: rotate(-15deg) scale(1.1); animation-delay: 2.0s; }

@keyframes pawPulse {
  0% { transform: scale(1) rotate(0deg); opacity: 0.7; }
  100% { transform: scale(1.15) rotate(10deg); opacity: 1; }
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 2;
}

/* 左右两侧萌猫 Mascot 动画样式 */
.cat-mascot {
  position: absolute;
  z-index: 5;
  filter: drop-shadow(0 10px 20px rgba(0,0,0,0.25));
  animation: catFloat 3.5s ease-in-out infinite alternate;
}

.cat-mascot-left {
  top: -20px;
  left: -40px;
  width: 90px;
  height: 90px;
}

.cat-mascot-right {
  bottom: 20px;
  right: -30px;
  width: 100px;
  height: 100px;
  animation-delay: 1.5s;
}

@keyframes catFloat {
  0% {
    transform: translateY(0px) rotate(-3deg);
  }
  100% {
    transform: translateY(-12px) rotate(4deg);
  }
}

.cat-bubble {
  position: absolute;
  top: -24px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 255, 255, 0.95);
  color: #4f46e5;
  font-size: 11px;
  font-weight: 800;
  padding: 3px 10px;
  border-radius: 12px;
  white-space: nowrap;
  box-shadow: 0 4px 10px rgba(0,0,0,0.15);
}

.cat-bubble::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  border-width: 4px 4px 0;
  border-style: solid;
  border-color: rgba(255, 255, 255, 0.95) transparent;
}

.badge-discount {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 24px;
}

.badge-pill {
  background: #f43f5e;
  color: white;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
}

.hero-title {
  font-size: 44px;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero-subtitle {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.85);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 520px;
}

.btn-hero-cta {
  background: linear-gradient(135deg, #f59e0b, #ea580c);
  color: #ffffff;
  font-size: 18px;
  font-weight: 700;
  padding: 16px 36px;
  border-radius: 30px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 10px 25px rgba(234, 88, 12, 0.4);
  transition: all 0.3s ease;
}

.btn-hero-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 30px rgba(234, 88, 12, 0.6);
}

.hero-img-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-img-wrap svg {
  width: 100%;
  max-width: 480px;
  filter: drop-shadow(0 20px 30px rgba(0,0,0,0.3));
}

/* Curved Separator */
.hero-curve {
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 100%;
  overflow: hidden;
  line-height: 0;
}

.hero-curve svg {
  position: relative;
  display: block;
  width: calc(100% + 1.3px);
  height: 70px;
}

/* Platforms Section */
.platforms-section {
  margin-top: -70px;
  position: relative;
  z-index: 10;
  margin-bottom: 60px;
}

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

.platform-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 24px 20px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
  border: 1px solid rgba(226, 232, 240, 0.8);
  transition: all 0.3s ease;
}

.platform-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.platform-icon {
  width: 54px;
  height: 54px;
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.platform-title {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--text-main);
}

.platform-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.btn-download {
  display: inline-block;
  width: 100%;
  padding: 8px 0;
  border-radius: 20px;
  background: #10b981;
  color: #ffffff;
  font-size: 13px;
  font-weight: 600;
  transition: opacity 0.2s ease;
}

.btn-download:hover {
  opacity: 0.9;
}

/* Section Header */
.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 48px;
}

.section-tag {
  color: var(--primary);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 12px;
}

.section-subtitle {
  font-size: 15px;
  color: var(--text-muted);
}

/* Features Grid */
.features-section {
  padding: 60px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.feature-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: rgba(79, 70, 229, 0.3);
}

.feature-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 20px;
}

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

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

/* Pricing Section */
.pricing-section {
  padding: 80px 0;
  background: #f1f5f9;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  align-items: stretch;
}

.price-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.3s ease;
}

.price-card.popular {
  border: 2px solid var(--primary);
  box-shadow: 0 10px 30px rgba(79, 70, 229, 0.2);
  transform: scale(1.03);
}

.popular-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary);
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 20px;
  box-shadow: 0 4px 10px rgba(79, 70, 229, 0.4);
}

.plan-name {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 8px;
}

.plan-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.plan-price {
  font-size: 36px;
  font-weight: 900;
  color: var(--primary);
  margin-bottom: 4px;
}

.plan-price span {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
}

.plan-features {
  list-style: none;
  margin: 24px 0;
  flex-grow: 1;
}

.plan-features li {
  font-size: 14px;
  color: #334155;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.plan-features li svg {
  color: var(--accent-teal);
  flex-shrink: 0;
}

.btn-price-buy {
  display: block;
  text-align: center;
  padding: 12px 0;
  border-radius: var(--radius-md);
  background: var(--primary);
  color: #ffffff;
  font-weight: 700;
  font-size: 15px;
  transition: all 0.2s ease;
}

.btn-price-buy:hover {
  background: var(--primary-hover);
  box-shadow: 0 6px 18px rgba(79, 70, 229, 0.35);
}

/* Coupon Banner */
.coupon-box {
  margin-top: 36px;
  background: linear-gradient(135deg, #1e1b4b, #312e81);
  color: #ffffff;
  padding: 20px 28px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.coupon-code {
  background: rgba(255,255,255,0.15);
  border: 1px dashed rgba(255,255,255,0.4);
  padding: 6px 14px;
  border-radius: 6px;
  font-family: monospace;
  font-weight: 700;
  letter-spacing: 1px;
}

.btn-copy {
  background: var(--accent-gold);
  color: #0f172a;
  padding: 8px 18px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 700;
  border: none;
  cursor: pointer;
}

/* Articles Section */
.articles-section {
  padding: 80px 0;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.article-body {
  padding: 24px;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.article-tag {
  display: inline-block;
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary);
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 12px;
  margin-bottom: 12px;
}

.article-title {
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
  color: var(--text-main);
}

.article-excerpt {
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-link {
  color: var(--primary);
  font-weight: 700;
  font-size: 14px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* Testimonials Section */
.testimonials-section {
  padding: 80px 0;
  background: #f8fafc;
}

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

.review-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 28px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.review-stars {
  color: #f59e0b;
  font-size: 16px;
  margin-bottom: 14px;
}

.review-text {
  font-size: 14px;
  color: #334155;
  line-height: 1.7;
  margin-bottom: 20px;
}

.review-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #818cf8, #c084fc);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 16px;
}

.author-info h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-main);
}

.author-info p {
  font-size: 12px;
  color: var(--text-muted);
}

/* FAQ Section */
.faq-section {
  padding: 80px 0;
}

.faq-wrap {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: #ffffff;
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.faq-question {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-main);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.faq-icon {
  font-size: 20px;
  transition: transform 0.3s ease;
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s cubic-bezier(0, 1, 0, 1), padding 0.3s ease;
  padding: 0 24px;
  color: var(--text-muted);
  font-size: 14px;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 24px 20px;
  transition: max-height 0.3s ease-in-out, padding 0.3s ease;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

/* Footer Section - PBN & SEO Link Pipeline */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 60px 0 30px;
  font-size: 13px;
  border-top: 1px solid #1e293b;
  text-align: center;
}

.footer-brand {
  margin-bottom: 24px;
}

.footer-brand h3 {
  color: #ffffff;
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 8px;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 30px;
  flex-wrap: wrap;
}

.footer-nav a {
  color: #cbd5e1;
  transition: color 0.2s ease;
}

.footer-nav a:hover {
  color: #ffffff;
}

/* PBN Friendly Links Zone (任务核心要求：低调小字号居中排版，dofollow) */
.pbn-links-zone {
  border-top: 1px solid #1e293b;
  padding-top: 24px;
  margin-top: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  font-size: 12px;
  color: #64748b;
}

.pbn-links-label {
  color: #475569;
}

.pbn-link-item {
  color: #94a3b8;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s ease;
}

.pbn-link-item:hover {
  color: #38bdf8;
  text-decoration: underline;
}

.footer-copy {
  margin-top: 20px;
  color: #475569;
  font-size: 12px;
}

/* Article Page Layout */
.article-header-bg {
  background: linear-gradient(135deg, var(--purple-grad-start), var(--purple-grad-end));
  color: white;
  padding: 60px 0;
  text-align: center;
}

.article-content-body {
  max-width: 860px;
  margin: -40px auto 60px;
  background: white;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.06);
  border: 1px solid var(--border-color);
}

.article-content-body h2 {
  font-size: 24px;
  margin: 32px 0 16px;
  color: #0f172a;
  border-bottom: 2px solid #f1f5f9;
  padding-bottom: 8px;
}

.article-content-body h3 {
  font-size: 18px;
  margin: 24px 0 12px;
  color: #1e293b;
}

.article-content-body p {
  margin-bottom: 16px;
  line-height: 1.8;
  color: #334155;
}

.article-content-body ul, .article-content-body ol {
  margin: 16px 0 24px 24px;
  color: #334155;
}

.article-cta-box {
  background: linear-gradient(135deg, #4f46e5, #7c3aed);
  color: white;
  padding: 30px;
  border-radius: var(--radius-md);
  margin: 40px 0;
  text-align: center;
}

.article-cta-box h3 {
  color: white;
  margin-top: 0;
}

.btn-cta-white {
  display: inline-block;
  background: #ffffff;
  color: var(--primary);
  font-weight: 800;
  padding: 12px 28px;
  border-radius: 25px;
  margin-top: 16px;
  transition: transform 0.2s ease;
}

.btn-cta-white:hover {
  transform: translateY(-2px);
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-subtitle {
    margin: 0 auto 36px;
  }
  .platform-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid, .pricing-grid, .articles-grid, .reviews-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .price-card.popular {
    transform: none;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .menu-toggle {
    display: block;
  }
  .platform-grid {
    grid-template-columns: 1fr 1fr;
  }
  .features-grid, .pricing-grid, .articles-grid, .reviews-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 32px;
  }
  .article-content-body {
    padding: 24px 20px;
  }
}