/* ===================================================================
   一元机场 (Lighthouse Speed) - 现代浅色系/趣味互动与轻量感 样式库
   =================================================================== */

:root {
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --bg-body: #f8fafc;
  --bg-card: rgba(255, 255, 255, 0.88);
  --bg-glass: rgba(255, 255, 255, 0.65);
  --text-main: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --border-light: rgba(226, 232, 240, 0.8);
  --border-focus: #38bdf8;
  
  /* 品牌色彩：浅色活力、轻盈渐变 */
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-light: #e0f2fe;
  --accent-cyan: #06b6d4;
  --accent-indigo: #6366f1;
  --accent-purple: #a855f7;
  --accent-pink: #ec4899;
  --accent-amber: #f59e0b;
  --accent-emerald: #10b981;

  --gradient-brand: linear-gradient(135deg, #0284c7 0%, #38bdf8 50%, #6366f1 100%);
  --gradient-warm: linear-gradient(135deg, #f43f5e 0%, #fb923c 100%);
  --gradient-badge: linear-gradient(135deg, #e0f2fe 0%, #ede9fe 100%);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 250, 252, 0.85) 100%);

  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 25px -5px rgba(15, 23, 42, 0.06), 0 8px 10px -6px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 35px -5px rgba(2, 132, 199, 0.12), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
  --shadow-glow: 0 0 25px rgba(56, 189, 248, 0.35);

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础重置 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.65;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* 趣味动态背景层 */
.ambient-background {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -1;
  overflow: hidden;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.55;
  animation: floatOrb 18s ease-in-out infinite alternate;
}

.orb-1 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, #bae6fd 0%, #38bdf8 60%, transparent 80%);
  top: -100px;
  left: 10%;
  animation-duration: 22s;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #e0e7ff 0%, #c7d2fe 60%, transparent 80%);
  top: 30%;
  right: -5%;
  animation-duration: 26s;
  animation-delay: -5s;
}

.orb-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #fce7f3 0%, #fed7aa 60%, transparent 80%);
  bottom: 10%;
  left: 5%;
  animation-duration: 20s;
  animation-delay: -8s;
}

/* 灯塔动态光束效果 (Lighthouse Beam Animation) */
.lighthouse-beam {
  position: absolute;
  top: 0;
  left: 50%;
  width: 800px;
  height: 600px;
  transform: translateX(-50%);
  background: conic-gradient(from 180deg at 50% 0%, transparent 0deg, rgba(56, 189, 248, 0.12) 20deg, transparent 40deg);
  filter: blur(25px);
  animation: sweepBeam 12s ease-in-out infinite alternate;
  pointer-events: none;
  z-index: -1;
}

@keyframes sweepBeam {
  0% { transform: translateX(-50%) rotate(-28deg); opacity: 0.4; }
  100% { transform: translateX(-50%) rotate(28deg); opacity: 0.8; }
}

@keyframes floatOrb {
  0% { transform: translateY(0) scale(1); }
  50% { transform: translateY(40px) scale(1.08); }
  100% { transform: translateY(-30px) scale(0.95); }
}

/* 容器与网格 */
.container {
  width: 100%;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 导航栏 */
.header-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition);
}

.header-nav.scrolled {
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.05);
  background: rgba(255, 255, 255, 0.95);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--text-main);
  position: relative;
}

.logo-beacon {
  width: 38px;
  height: 38px;
  background: var(--gradient-brand);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 20px;
  box-shadow: 0 4px 14px rgba(2, 132, 199, 0.35);
  position: relative;
  transition: var(--transition);
}

.brand-logo:hover .logo-beacon {
  transform: rotate(10deg) scale(1.06);
}

.brand-text {
  background: linear-gradient(120deg, #0284c7, #4f46e5);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

.nav-link {
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  position: relative;
  padding: 6px 0;
}

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

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gradient-brand);
  border-radius: 2px;
  transition: var(--transition);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 14px;
}

/* 按钮规范 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 6px 18px rgba(2, 132, 199, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(2, 132, 199, 0.45);
  color: #fff;
}

.btn-outline {
  background: #fff;
  color: var(--text-main);
  border-color: #cbd5e1;
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: #f0f9ff;
  transform: translateY(-2px);
}

.btn-glow {
  position: relative;
  overflow: hidden;
}

.btn-glow::after {
  content: "";
  position: absolute;
  top: -50%;
  left: -60%;
  width: 40%;
  height: 200%;
  background: linear-gradient(
    60deg,
    rgba(255, 255, 255, 0) 20%,
    rgba(255, 255, 255, 0.4) 50%,
    rgba(255, 255, 255, 0) 80%
  );
  transform: rotate(25deg);
  animation: shineSweep 4s infinite ease-in-out;
}

@keyframes shineSweep {
  0% { left: -60%; }
  35% { left: 140%; }
  100% { left: 140%; }
}

/* 汉堡按钮 */
.menu-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 101;
}

.menu-toggle span {
  width: 100%;
  height: 2.5px;
  background-color: var(--text-main);
  border-radius: 4px;
  transition: var(--transition);
}

/* Hero 首屏 */
.hero-section {
  padding: 80px 0 60px;
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 50px;
}

.badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: var(--gradient-badge);
  border: 1px solid rgba(56, 189, 248, 0.4);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 600;
  color: #0369a1;
  margin-bottom: 24px;
  box-shadow: 0 2px 10px rgba(56, 189, 248, 0.15);
}

.badge-pulse {
  width: 8px;
  height: 8px;
  background: #10b981;
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
  color: #0f172a;
}

.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 32px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 40px;
}

.hero-features-list {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  border-top: 1px solid var(--border-light);
  padding-top: 24px;
}

.hero-feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-muted);
}

.feature-check-icon {
  color: var(--accent-emerald);
  font-weight: bold;
}

/* Hero 右侧动态互动卡片展示 */
.hero-visual-card {
  position: relative;
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.9);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-lg);
  padding: 32px;
  animation: floatCard 6s ease-in-out infinite alternate;
}

@keyframes floatCard {
  0% { transform: translateY(0); }
  100% { transform: translateY(-12px); }
}

.speed-meter {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

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

.meter-header h4 {
  font-size: 1rem;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 8px;
}

.meter-status {
  padding: 4px 10px;
  background: #dcfce7;
  color: #15803d;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-full);
}

.speed-display {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin: 10px 0;
}

.speed-number {
  font-size: 3.5rem;
  font-weight: 900;
  line-height: 1;
  background: linear-gradient(135deg, #0284c7, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.speed-unit {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-muted);
}

.speed-progress-bar {
  width: 100%;
  height: 10px;
  background: #e2e8f0;
  border-radius: 99px;
  overflow: hidden;
  position: relative;
}

.progress-inner {
  height: 100%;
  width: 94%;
  background: var(--gradient-brand);
  border-radius: 99px;
  animation: progressPulse 3s ease-in-out infinite alternate;
}

@keyframes progressPulse {
  0% { width: 90%; }
  100% { width: 97%; }
}

.stat-pills {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.stat-box {
  background: rgba(241, 245, 249, 0.8);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  text-align: center;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.stat-val {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

/* 浮动趣味小徽章 */
.floating-badge {
  position: absolute;
  background: #ffffff;
  padding: 10px 16px;
  border-radius: var(--radius-full);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
  border: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  font-weight: 600;
  animation: floatMini 4s ease-in-out infinite alternate;
}

.floating-badge-1 {
  top: -18px;
  right: -15px;
}

.floating-badge-2 {
  bottom: -15px;
  left: -20px;
  animation-delay: -2s;
}

@keyframes floatMini {
  0% { transform: translateY(0); }
  100% { transform: translateY(-8px); }
}

/* 通用板块样式 */
.section {
  padding: 90px 0;
  position: relative;
}

.section-alt {
  background: linear-gradient(180deg, rgba(241, 245, 249, 0.5) 0%, rgba(248, 250, 252, 0.9) 100%);
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: #e0f2fe;
  color: #0284c7;
  font-size: 0.82rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.01em;
  margin-bottom: 14px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* 核心优势板块卡片 */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.feature-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--gradient-brand);
  opacity: 0;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(56, 189, 248, 0.4);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon-wrap {
  width: 58px;
  height: 58px;
  border-radius: 16px;
  background: #f0f9ff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  margin-bottom: 20px;
  transition: var(--transition);
}

.feature-card:hover .feature-icon-wrap {
  transform: scale(1.1) rotate(5deg);
  background: var(--gradient-badge);
}

.feature-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-main);
}

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

/* 套餐价格板块 */
.pricing-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  background: #e2e8f0;
  padding: 4px;
  border-radius: var(--radius-full);
  max-width: 320px;
  margin: 0 auto 40px;
}

.pricing-tab {
  flex: 1;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  background: transparent;
  cursor: pointer;
  color: var(--text-muted);
  transition: var(--transition);
}

.pricing-tab.active {
  background: #ffffff;
  color: var(--primary);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
  align-items: stretch;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.pricing-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
  border: 2px solid var(--primary);
  background: #ffffff;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.pricing-badge-popular {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-brand);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.3);
}

.pricing-badge-trial {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gradient-warm);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 800;
  padding: 4px 16px;
  border-radius: var(--radius-full);
  letter-spacing: 0.05em;
  box-shadow: 0 4px 10px rgba(244, 63, 94, 0.3);
}

.pricing-header {
  text-align: center;
  border-bottom: 1px dashed var(--border-light);
  padding-bottom: 24px;
  margin-bottom: 24px;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: var(--text-main);
}

.plan-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

.plan-price-wrap {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 4px;
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
}

.price-amount {
  font-size: 3.2rem;
  font-weight: 900;
  line-height: 1;
  color: var(--text-main);
}

.price-period {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.pricing-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 32px;
  flex-grow: 1;
}

.pricing-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  color: #334155;
}

.pricing-feature-item svg {
  flex-shrink: 0;
  color: var(--accent-emerald);
}

.pricing-btn {
  width: 100%;
}

/* 用户评价板块 */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 26px;
}

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

.review-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: #cbd5e1;
}

.review-stars {
  color: #f59e0b;
  font-size: 1.1rem;
  margin-bottom: 14px;
}

.review-text {
  font-size: 0.95rem;
  color: #334155;
  line-height: 1.7;
  margin-bottom: 20px;
  font-style: italic;
}

.reviewer-profile {
  display: flex;
  align-items: center;
  gap: 14px;
}

.reviewer-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--gradient-badge);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--primary);
  font-size: 1rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.reviewer-info h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.reviewer-tag {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* 常见问题 FAQ 板块 */
.faq-container {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.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-item:hover {
  border-color: #cbd5e1;
}

.faq-question {
  width: 100%;
  padding: 20px 24px;
  text-align: left;
  background: transparent;
  border: none;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: var(--transition);
}

.faq-question:hover {
  color: var(--primary);
}

.faq-toggle-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #f1f5f9;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  font-size: 16px;
  color: var(--text-muted);
}

.faq-item.active .faq-toggle-icon {
  transform: rotate(45deg);
  background: #e0f2fe;
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, padding 0.35s ease-out;
  padding: 0 24px;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.8;
}

.faq-item.active .faq-answer {
  max-height: 300px;
  padding: 0 24px 22px 24px;
}

/* 知识库与文章板块 */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 28px;
}

.article-card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.article-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(56, 189, 248, 0.5);
}

.article-thumb {
  height: 160px;
  background: linear-gradient(135deg, #e0f2fe 0%, #f0fdf4 50%, #faf5ff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 42px;
  position: relative;
  overflow: hidden;
}

.article-thumb::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 30%, rgba(255, 255, 255, 0.4), transparent);
}

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

.article-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  font-size: 0.8rem;
  color: var(--text-light);
}

.article-category {
  padding: 2px 8px;
  background: #f1f5f9;
  color: #475569;
  border-radius: 4px;
  font-weight: 600;
}

.article-title {
  font-size: 1.18rem;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 12px;
  color: var(--text-main);
  transition: var(--transition);
}

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

.article-excerpt {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
  flex-grow: 1;
}

.article-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid #f1f5f9;
  padding-top: 16px;
}

.read-more-link {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: var(--transition);
}

.read-more-link:hover {
  gap: 8px;
}

/* 网站底部 Footer */
.site-footer {
  background: #ffffff;
  border-top: 1px solid var(--border-light);
  padding: 64px 0 32px;
  position: relative;
  margin-top: 60px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-top: 16px;
  line-height: 1.7;
  max-width: 320px;
}

.footer-col h4 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 18px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary);
  transform: translateX(3px);
}

.footer-bottom {
  border-top: 1px solid #f1f5f9;
  padding-top: 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-light);
}

.seo-tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 14px;
}

.seo-tag {
  background: #f1f5f9;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  color: #64748b;
  text-decoration: none;
}

.seo-tag:hover {
  color: var(--primary);
}

/* 文章详情页专用排版 */
.article-header-section {
  padding: 50px 0 30px;
  background: linear-gradient(180deg, #f0f9ff 0%, #f8fafc 100%);
  border-bottom: 1px solid var(--border-light);
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.article-breadcrumb a {
  color: var(--primary);
  text-decoration: none;
}

.article-main-title {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.3;
  margin-bottom: 16px;
  color: var(--text-main);
}

.article-info-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.article-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  padding: 48px 0;
}

.article-body {
  background: #ffffff;
  padding: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  line-height: 1.85;
  font-size: 1.05rem;
  color: #334155;
}

.article-body h2 {
  font-size: 1.7rem;
  margin: 36px 0 16px;
  color: var(--text-main);
  padding-bottom: 8px;
  border-bottom: 2px solid #e0f2fe;
}

.article-body h3 {
  font-size: 1.3rem;
  margin: 28px 0 12px;
  color: var(--text-main);
}

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

.article-body ul, .article-body ol {
  margin-bottom: 20px;
  padding-left: 24px;
}

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

.article-body blockquote {
  border-left: 4px solid var(--primary);
  background: #f0f9ff;
  padding: 16px 20px;
  margin: 24px 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: #0369a1;
  font-size: 0.95rem;
}

.article-cta-box {
  background: linear-gradient(135deg, #e0f2fe 0%, #ede9fe 100%);
  border: 1px solid #bae6fd;
  border-radius: var(--radius-md);
  padding: 28px;
  text-align: center;
  margin: 36px 0;
}

.article-cta-box h4 {
  font-size: 1.4rem;
  font-weight: 800;
  color: #0369a1;
  margin-bottom: 10px;
}

.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-card {
  background: #ffffff;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 90px;
}

.sidebar-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid #f1f5f9;
}

.related-posts-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.related-posts-list a {
  text-decoration: none;
  color: #475569;
  font-size: 0.9rem;
  line-height: 1.5;
  transition: var(--transition);
  display: block;
}

.related-posts-list a:hover {
  color: var(--primary);
  padding-left: 4px;
}

/* 响应式调整 */
@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .article-layout {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
  .hero-title {
    font-size: 2.6rem;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }
  .nav-menu {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: #ffffff;
    flex-direction: column;
    padding: 24px;
    gap: 18px;
    border-bottom: 1px solid var(--border-light);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    transform: translateY(-150%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.3s ease;
  }
  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 14px;
    text-align: center;
  }
  .hero-title {
    font-size: 2.1rem;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .article-body {
    padding: 24px 18px;
  }
}