/* 火烧云机场 huoshaoyun.lol - 官方旗舰落地页全套视觉设计系统 */

:root {
  --bg-dark: #0f0709;
  --bg-card-dark: #190c10;
  --bg-card-hover: #261218;
  --primary-red: #d32f2f;
  --primary-red-hover: #b71c1c;
  --flame-orange: #ff5722;
  --flame-yellow: #ffb300;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(239, 68, 68, 0.3);
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --shadow-glow: 0 10px 30px rgba(211, 47, 47, 0.25);
  --container-width: 1240px;
}

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

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

body {
  overflow-x: hidden;
  background: radial-gradient(circle at 50% 0%, #3a0a10 0%, #0f0709 60%);
  min-height: 100vh;
}

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

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* 顶部导航栏 */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(15, 7, 9, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
  transition: all 0.3s ease;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #ff4e50, #f9d423);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.5px;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, #e52d27, #b21f1f);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  box-shadow: 0 4px 12px rgba(229, 45, 39, 0.4);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: #e2e8f0;
  transition: color 0.2s ease;
}

.nav-links a:hover {
  color: var(--flame-yellow);
}

.btn-cta-nav {
  background: linear-gradient(135deg, #e52d27, #b21f1f);
  color: #fff !important;
  padding: 10px 22px;
  border-radius: 30px;
  font-weight: 600 !important;
  box-shadow: 0 4px 15px rgba(229, 45, 39, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease !important;
}

.btn-cta-nav:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(229, 45, 39, 0.5);
}

/* Hero Section */
.hero {
  padding: 90px 0 60px;
  text-align: center;
  position: relative;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(255, 87, 34, 0.12);
  border: 1px solid rgba(255, 87, 34, 0.3);
  border-radius: 50px;
  color: #ff7043;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1.25;
  margin-bottom: 24px;
  letter-spacing: -1px;
}

.hero-title span {
  background: linear-gradient(135deg, #ff4e50 0%, #f9d423 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.2rem;
  color: var(--text-muted);
  max-width: 780px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-bottom: 50px;
}

.btn-primary-lg {
  background: linear-gradient(135deg, #e52d27 0%, #b21f1f 100%);
  color: #fff;
  padding: 16px 42px;
  border-radius: 50px;
  font-size: 1.15rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 10px 30px rgba(229, 45, 39, 0.4);
  transition: all 0.3s ease;
}

.btn-primary-lg:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(229, 45, 39, 0.6);
}

.btn-secondary-lg {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #fff;
  padding: 16px 36px;
  border-radius: 50px;
  font-size: 1.15rem;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-secondary-lg:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px;
  background: rgba(25px, 12px, 16px, 0.6);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(10px);
}

.stat-item h3 {
  font-size: 2rem;
  font-weight: 800;
  color: #ff5722;
  margin-bottom: 4px;
}

.stat-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* 核心优势板块 */
.section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 55px;
}

.section-tag {
  color: var(--flame-orange);
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 10px;
  display: block;
}

.section-title {
  font-size: 2.4rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 650px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.feature-card {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  box-shadow: var(--shadow-glow);
}

.feature-icon {
  width: 58px;
  height: 58px;
  background: linear-gradient(135deg, rgba(229, 45, 39, 0.15), rgba(255, 179, 0, 0.15));
  border: 1px solid rgba(229, 45, 39, 0.3);
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: #ff5722;
  margin-bottom: 24px;
}

.feature-card h3 {
  font-size: 1.35rem;
  margin-bottom: 14px;
  color: #fff;
  font-weight: 700;
}

.feature-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ==================== 价格套餐 (精准还原图片效果) ==================== */
.pricing-section {
  background: radial-gradient(circle at 50% 50%, #4a040b 0%, #200206 100%);
  padding: 90px 0;
  position: relative;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  max-width: 1150px;
  margin: 0 auto;
  align-items: center;
}

.pricing-card {
  background: #fdf8f8; /* 还原高品质白色浅灰内质感 */
  border-radius: 24px;
  padding: 45px 30px 40px;
  text-align: center;
  position: relative;
  color: #1a1a1a;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 30px 60px rgba(0, 0, 0, 0.6);
}

.pricing-card.popular {
  border: 2px solid #ff3b3b;
  transform: scale(1.03);
}

.pricing-badge {
  position: absolute;
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: #ffc107;
  color: #000;
  font-weight: 800;
  font-size: 0.95rem;
  padding: 6px 24px;
  border-radius: 30px;
  box-shadow: 0 4px 12px rgba(255, 193, 7, 0.4);
  white-space: nowrap;
}

.pricing-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: #111827;
  margin-top: 10px;
  margin-bottom: 30px;
}

.pricing-price-box {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 6px;
  margin-bottom: 30px;
}

.price-currency {
  font-size: 1.4rem;
  font-weight: 800;
  color: #0f172a;
}

.price-amount {
  font-size: 4rem;
  font-weight: 900;
  line-height: 1;
  color: #0f172a;
  letter-spacing: -2px;
}

.price-unit {
  font-size: 1.1rem;
  color: #64748b;
  font-weight: 600;
}

.original-price {
  font-size: 1.1rem;
  color: #94a3b8;
  text-decoration: line-through;
  margin-left: 6px;
  font-weight: 500;
}

.pricing-subtext {
  font-size: 0.95rem;
  color: #64748b;
  margin-bottom: 40px;
  min-height: 24px;
}

/* 按钮样式还原图片 */
.btn-plan-outline {
  display: block;
  width: 100%;
  padding: 16px 0;
  border: 1.5px solid #d32f2f;
  background: transparent;
  color: #d32f2f;
  font-weight: 700;
  font-size: 1.1rem;
  border-radius: 40px;
  transition: all 0.2s ease;
}

.btn-plan-outline:hover {
  background: rgba(211, 47, 47, 0.06);
}

.btn-plan-solid {
  display: block;
  width: 100%;
  padding: 16px 0;
  background: #d32f2f;
  color: #ffffff;
  font-weight: 700;
  font-size: 1.1rem;
  border-radius: 40px;
  box-shadow: 0 6px 18px rgba(211, 47, 47, 0.35);
  transition: all 0.2s ease;
}

.btn-plan-solid:hover {
  background: #b71c1c;
  box-shadow: 0 8px 25px rgba(211, 47, 47, 0.5);
  transform: translateY(-2px);
}

/* 使用教程 Section */
.tutorials-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.tutorial-card {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px 24px;
  text-align: center;
  transition: all 0.3s ease;
}

.tutorial-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

.tutorial-icon {
  font-size: 2.2rem;
  margin-bottom: 16px;
  display: block;
}

.tutorial-card h3 {
  font-size: 1.15rem;
  color: #fff;
  margin-bottom: 10px;
  font-weight: 700;
}

.tutorial-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* 用户评价 Section */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.review-card {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.review-stars {
  color: #ffb300;
  font-size: 1.1rem;
  margin-bottom: 14px;
}

.review-text {
  font-size: 0.95rem;
  color: #cbd5e1;
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

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

.user-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, #e52d27, #ffb300);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #fff;
}

.user-info h4 {
  font-size: 0.95rem;
  color: #fff;
  font-weight: 600;
}

.user-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 常见问题 FAQ Section */
.faq-grid {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 22px 28px;
  background: transparent;
  border: none;
  color: #fff;
  font-size: 1.05rem;
  font-weight: 700;
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-answer {
  padding: 0 28px 22px;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* SEO文章网格 Section */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.article-card {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 26px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.3s ease;
}

.article-card:hover {
  border-color: var(--border-glow);
  transform: translateY(-4px);
}

.article-tag {
  display: inline-block;
  background: rgba(229, 45, 39, 0.15);
  color: #ff5722;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  margin-bottom: 12px;
}

.article-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 12px;
  line-height: 1.5;
}

.article-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.6;
}

.article-link {
  color: #ff7043;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.article-link:hover {
  text-decoration: underline;
}

/* 70个热门SEO标签 Section */
.tags-section {
  background: rgba(15, 7, 9, 0.95);
  border-top: 1px solid var(--border-color);
  padding: 60px 0;
}

.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  max-width: 1100px;
  margin: 0 auto;
}

.tag-item {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: #cbd5e1;
  padding: 6px 14px;
  border-radius: 30px;
  font-size: 0.85rem;
  transition: all 0.2s ease;
}

.tag-item:hover {
  background: rgba(229, 45, 39, 0.2);
  border-color: rgba(229, 45, 39, 0.4);
  color: #fff;
  transform: scale(1.04);
}

/* Footer 页脚 */
.footer {
  background: #080304;
  border-top: 1px solid var(--border-color);
  padding: 50px 0 30px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 40px;
}

.footer-brand h3 {
  font-size: 1.4rem;
  color: #fff;
  margin-bottom: 12px;
}

.footer-links {
  display: flex;
  gap: 40px;
}

.footer-column h4 {
  color: #fff;
  font-size: 0.95rem;
  margin-bottom: 14px;
}

.footer-column ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-column a:hover {
  color: var(--flame-yellow);
}

.footer-bottom {
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 24px;
  font-size: 0.85rem;
}

/* 文章详情页专用样式 */
.article-page {
  padding: 60px 0;
  max-width: 900px;
  margin: 0 auto;
}

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

.article-header h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  line-height: 1.3;
}

.article-meta {
  color: var(--text-muted);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
}

.article-body {
  background: var(--bg-card-dark);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 45px 40px;
  font-size: 1.05rem;
  line-height: 1.9;
  color: #e2e8f0;
}

.article-body h2 {
  font-size: 1.7rem;
  color: #fff;
  margin: 35px 0 18px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.article-body h3 {
  font-size: 1.3rem;
  color: #ff7043;
  margin: 25px 0 14px;
}

.article-body p {
  margin-bottom: 20px;
}

.article-body ul, .article-body ol {
  margin-bottom: 24px;
  padding-left: 24px;
}

.article-body li {
  margin-bottom: 8px;
}

.article-body a {
  color: #ff7043;
  text-decoration: underline;
  font-weight: 600;
}

.article-cta-box {
  background: linear-gradient(135deg, rgba(229, 45, 39, 0.2), rgba(255, 179, 0, 0.15));
  border: 1px solid rgba(229, 45, 39, 0.4);
  border-radius: var(--radius-md);
  padding: 30px;
  text-align: center;
  margin: 40px 0;
}

.article-cta-box h3 {
  color: #fff;
  font-size: 1.4rem;
  margin-bottom: 10px;
}

/* 响应式调整 */
@media (max-width: 1024px) {
  .pricing-grid, .features-grid, .reviews-grid, .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .tutorials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-title {
    font-size: 2.8rem;
  }
}

@media (max-width: 768px) {
  .pricing-grid, .features-grid, .reviews-grid, .articles-grid, .tutorials-grid {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-title {
    font-size: 2.2rem;
  }
  .nav-links {
    display: none;
  }
}