/* ==========================================================================
   微风网络 BreezeNetwork - Paper-craft Playground Design System
   Art Direction: Paper-craft playground / Fridge-door gallery of good weather
   Palette: 
     - Sky wash: #EAF4FA
     - Ink: #22303C
     - Signal blue: #2E86AB
     - Sun tangerine: #F2A03D
     - Cloud white: #FFFFFF
   Typography: Fredoka & Nunito
   Rules: NO dark backgrounds, NO neon, NO gradients!
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@500;600;700&family=Nunito:wght@400;600;700;800&display=swap');

:root {
  --sky-wash: #EAF4FA;
  --ink: #22303C;
  --signal-blue: #2E86AB;
  --signal-blue-light: #d8edf5;
  --sun-tangerine: #F2A03D;
  --sun-tangerine-light: #fdeddc;
  --cloud-white: #FFFFFF;
  
  --paper-shadow-sm: 0 4px 0 #22303C;
  --paper-shadow: 4px 4px 0 #22303C;
  --paper-shadow-lg: 6px 6px 0 #22303C;
  --paper-shadow-soft: 0 10px 20px rgba(34, 48, 60, 0.08);

  --font-display: 'Fredoka', -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: 'Nunito', -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;

  --radius-paper: 16px;
  --radius-tag: 10px;
  --radius-pill: 999px;
  --border-paper: 2px solid #22303C;
  --max-width: 1160px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--sky-wash);
}

body {
  font-family: var(--font-body);
  color: var(--ink);
  background-color: var(--sky-wash);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.2s ease;
}

ul, ol {
  list-style: none;
}

/* 容器 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
}

/* 柔和浮动动画 */
@keyframes gentle-float {
  0%, 100% {
    transform: translateY(0px) rotate(0deg);
  }
  50% {
    transform: translateY(-6px) rotate(1deg);
  }
}

@keyframes gentle-bob {
  0%, 100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-4px);
  }
}

.float-item {
  animation: gentle-float 4s ease-in-out infinite;
}

/* 虚线旅行连接线 (Dashed travel lines connecting sections) */
.travel-line-connector {
  position: relative;
  width: 100%;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.travel-line-connector::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 0;
  right: 0;
  border-top: 3px dashed var(--signal-blue);
  opacity: 0.55;
  z-index: 0;
}

.travel-waypoint {
  position: relative;
  z-index: 1;
  background: var(--cloud-white);
  border: var(--border-paper);
  border-radius: var(--radius-pill);
  padding: 4px 18px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--signal-blue);
  box-shadow: 2px 2px 0 var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* 贴纸徽章 (Sticker-style badges) */
.sticker-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--cloud-white);
  color: var(--ink);
  border: var(--border-paper);
  border-radius: var(--radius-tag);
  padding: 6px 14px;
  font-weight: 700;
  font-size: 0.88rem;
  box-shadow: 3px 3px 0 var(--ink);
  transform: rotate(-1.5deg);
  user-select: none;
}

.sticker-badge.sun {
  background: var(--sun-tangerine-light);
  border-color: var(--ink);
  color: var(--ink);
}

.sticker-badge.blue {
  background: var(--signal-blue-light);
  color: var(--signal-blue);
}

/* 头部导航 (Nav) */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--cloud-white);
  border-bottom: 3px solid var(--ink);
  box-shadow: 0 4px 12px rgba(34, 48, 60, 0.05);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 74px;
}

/* Logo: 小折纸船（一蓝帆一白帆，两条虚线微风线） */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.3px;
}

.origami-boat-icon {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
}

.brand-sub {
  font-size: 0.78rem;
  font-family: var(--font-body);
  color: var(--signal-blue);
  font-weight: 800;
  letter-spacing: 0.5px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-link {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
  padding: 6px 10px;
  border-radius: 8px;
  position: relative;
}

.nav-link:hover {
  background: var(--sky-wash);
  color: var(--signal-blue);
}

.nav-link.badge-link {
  background: var(--sun-tangerine-light);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-tag);
  box-shadow: 2px 2px 0 var(--ink);
  color: var(--ink);
}

.nav-link.badge-link:hover {
  background: var(--sun-tangerine);
  color: var(--ink);
  transform: translateY(-1px);
}

.nav-action {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* 纯色剪纸风按钮 (NO Gradients) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-pill);
  cursor: pointer;
  text-align: center;
  white-space: nowrap;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  border: var(--border-paper);
}

.btn-primary {
  background: var(--sun-tangerine);
  color: var(--cloud-white);
  box-shadow: var(--paper-shadow);
}

.btn-primary:hover {
  background: #e28e29;
  transform: translate(-1px, -1px);
  box-shadow: var(--paper-shadow-lg);
}

.btn-primary:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--ink);
}

.btn-secondary {
  background: var(--cloud-white);
  color: var(--ink);
  box-shadow: var(--paper-shadow);
}

.btn-secondary:hover {
  background: var(--sky-wash);
  color: var(--signal-blue);
  transform: translate(-1px, -1px);
  box-shadow: var(--paper-shadow-lg);
}

.btn-secondary:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--ink);
}

.btn-blue {
  background: var(--signal-blue);
  color: var(--cloud-white);
  box-shadow: var(--paper-shadow);
}

.btn-blue:hover {
  background: #257292;
  transform: translate(-1px, -1px);
  box-shadow: var(--paper-shadow-lg);
}

.btn-lg {
  padding: 13px 28px;
  font-size: 1.08rem;
}

.btn-block {
  width: 100%;
}

/* 主视觉区 (Hero) */
.hero {
  position: relative;
  padding: 56px 0 36px;
  text-align: center;
}

.hero-box {
  background: var(--cloud-white);
  border: var(--border-paper);
  border-radius: 24px;
  padding: 52px 36px 42px;
  box-shadow: var(--paper-shadow-lg);
  max-width: 960px;
  margin: 0 auto;
  position: relative;
}

/* 冰箱贴小挂图针装饰 */
.fridge-pin {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  width: 28px;
  height: 28px;
  background: var(--sun-tangerine);
  border: var(--border-paper);
  border-radius: 50%;
  box-shadow: 2px 2px 0 var(--ink);
}

.hero-header-badge {
  margin-bottom: 20px;
}

.hero-title {
  font-family: var(--font-display);
  font-size: 2.85rem;
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
  margin-bottom: 18px;
  letter-spacing: -0.5px;
}

.hero-title .brand-highlight {
  color: var(--signal-blue);
  display: inline-block;
  border-bottom: 4px dashed var(--sun-tangerine);
  padding-bottom: 2px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: #4b5d6e;
  max-width: 720px;
  margin: 0 auto 34px;
  line-height: 1.75;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 34px;
}

.hero-features-ribbon {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  padding-top: 24px;
  border-top: 2px dashed #dbe5ee;
}

.ribbon-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--ink);
  background: var(--sky-wash);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--ink);
}

/* 核心剪纸卡片 (Cut-paper layers) */
.section {
  padding: 44px 0 54px;
  position: relative;
}

.section-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 40px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  background: var(--signal-blue);
  color: var(--cloud-white);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  border: 1.5px solid var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
  margin-bottom: 12px;
}

.section-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}

.section-desc {
  font-size: 1.05rem;
  color: #4b5d6e;
}

/* 核心优势（3个剪纸卡片） */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}

.paper-card {
  background: var(--cloud-white);
  border: var(--border-paper);
  border-radius: var(--radius-paper);
  padding: 32px 26px;
  box-shadow: var(--paper-shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  position: relative;
}

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

.card-tape {
  position: absolute;
  top: -10px;
  left: 30px;
  width: 50px;
  height: 18px;
  background: rgba(242, 160, 61, 0.45);
  border: 1px dashed var(--ink);
  border-radius: 2px;
  transform: rotate(-3deg);
}

.card-icon {
  width: 54px;
  height: 54px;
  border-radius: 14px;
  background: var(--sky-wash);
  border: var(--border-paper);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  box-shadow: 2px 2px 0 var(--ink);
}

.card-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--signal-blue);
}

.paper-card h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--ink);
}

.paper-card p {
  font-size: 0.95rem;
  color: #4b5d6e;
  line-height: 1.65;
}

/* 流媒体与 AI 支持图卡 */
.matrix-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 26px;
}

.matrix-card {
  background: var(--cloud-white);
  border: var(--border-paper);
  border-radius: var(--radius-paper);
  padding: 34px 30px;
  box-shadow: var(--paper-shadow);
  position: relative;
}

.matrix-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.matrix-badge-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--signal-blue-light);
  border: var(--border-paper);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--signal-blue);
  box-shadow: 2px 2px 0 var(--ink);
}

.matrix-header h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
}

.matrix-desc {
  font-size: 0.95rem;
  color: #4b5d6e;
  margin-bottom: 20px;
}

.tags-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tag-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--radius-tag);
  background: var(--sky-wash);
  border: 1.5px solid var(--ink);
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--ink);
}

.tag-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--sun-tangerine);
  border: 1px solid var(--ink);
}

/* 真实套餐价格对比表 (参考网上专线机场真实套餐定价) */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  align-items: stretch;
}

.pricing-card {
  background: var(--cloud-white);
  border: var(--border-paper);
  border-radius: 20px;
  padding: 36px 26px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--paper-shadow);
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--paper-shadow-lg);
}

.pricing-card.featured {
  background: var(--cloud-white);
  border: 3px solid var(--signal-blue);
  box-shadow: 6px 6px 0 var(--signal-blue);
}

.pricing-card.featured:hover {
  transform: translateY(-6px);
  box-shadow: 8px 8px 0 var(--signal-blue);
}

.pricing-pin-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%) rotate(-1deg);
  background: var(--sun-tangerine);
  color: var(--cloud-white);
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: var(--radius-pill);
  border: var(--border-paper);
  box-shadow: 2px 2px 0 var(--ink);
}

.plan-header {
  border-bottom: 2px dashed #dbe5ee;
  padding-bottom: 18px;
  margin-bottom: 20px;
}

.plan-name {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
}

.plan-summary {
  font-size: 0.88rem;
  color: #607284;
}

.plan-price-wrap {
  margin: 16px 0 4px;
  display: flex;
  align-items: baseline;
}

.price-unit {
  font-family: var(--font-display);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--signal-blue);
}

.price-digit {
  font-family: var(--font-display);
  font-size: 2.75rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1;
  margin: 0 4px;
}

.price-cycle {
  font-size: 0.9rem;
  color: #607284;
  font-weight: 600;
}

.pricing-features-list {
  flex-grow: 1;
  margin-bottom: 28px;
}

.pricing-features-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink);
}

.pricing-features-list li svg {
  width: 18px;
  height: 18px;
  color: var(--signal-blue);
  flex-shrink: 0;
}

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

.note-card {
  background: var(--cloud-white);
  border: var(--border-paper);
  border-radius: var(--radius-paper);
  padding: 28px 24px;
  box-shadow: var(--paper-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
}

.magnet-dot {
  position: absolute;
  top: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 18px;
  border-radius: 50%;
  border: 1.5px solid var(--ink);
  box-shadow: 1px 1px 0 var(--ink);
}

.magnet-dot.orange { background: var(--sun-tangerine); }
.magnet-dot.blue { background: var(--signal-blue); }
.magnet-dot.yellow { background: #facc15; }

.note-text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: #334155;
  margin-bottom: 18px;
  font-style: italic;
}

.note-user {
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1.5px dashed #e2e8f0;
  padding-top: 14px;
}

.note-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--sky-wash);
  border: 1.5px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-family: var(--font-display);
  color: var(--signal-blue);
}

.note-name {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--ink);
}

.note-title {
  font-size: 0.8rem;
  color: #64748b;
}

/* 常见问题解答 FAQ */
.faq-list {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-card {
  background: var(--cloud-white);
  border: var(--border-paper);
  border-radius: var(--radius-paper);
  overflow: hidden;
  box-shadow: var(--paper-shadow);
  transition: all 0.2s ease;
}

.faq-card[open] {
  box-shadow: var(--paper-shadow-lg);
}

.faq-header {
  padding: 18px 24px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  list-style: none;
}

.faq-header::-webkit-details-marker {
  display: none;
}

.faq-header::after {
  content: "+";
  font-size: 1.4rem;
  font-family: var(--font-display);
  color: var(--signal-blue);
  font-weight: 700;
  transition: transform 0.2s ease;
}

.faq-card[open] .faq-header::after {
  transform: rotate(45deg);
  color: var(--sun-tangerine);
}

.faq-body {
  padding: 0 24px 22px;
  color: #4b5d6e;
  font-size: 0.95rem;
  line-height: 1.7;
}

/* 底部 CTA 纸卡 */
.cta-paper-board {
  background: var(--cloud-white);
  border: var(--border-paper);
  border-radius: 24px;
  padding: 50px 32px;
  text-align: center;
  box-shadow: var(--paper-shadow-lg);
  max-width: 880px;
  margin: 40px auto 0;
  position: relative;
}

.cta-paper-board h2 {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 12px;
}

.cta-paper-board p {
  color: #4b5d6e;
  font-size: 1.05rem;
  max-width: 620px;
  margin: 0 auto 28px;
}

/* 页脚 (Footer) 规范 */
.footer {
  background: var(--cloud-white);
  border-top: 3px solid var(--ink);
  padding: 48px 0 32px;
  margin-top: 50px;
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 28px;
  border-bottom: 2px dashed #dbe5ee;
}

.footer-brand p {
  color: #607284;
  font-size: 0.9rem;
  margin-top: 6px;
  font-weight: 600;
}

/* 页脚只保留这四个标题，内容打开新的页面展示 */
.footer-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  flex-wrap: wrap;
}

.footer-nav-link {
  font-family: var(--font-display);
  color: var(--ink);
  font-size: 1.05rem;
  font-weight: 700;
  padding: 4px 8px;
  border-radius: 6px;
}

.footer-nav-link:hover {
  color: var(--signal-blue);
  background: var(--sky-wash);
}

.footer-bottom {
  padding-top: 22px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.88rem;
  color: #607284;
  font-weight: 600;
}

/* 单独文档子页面（关于我们、条款、隐私、网站地图、推荐资讯）样式 */
.doc-page {
  padding: 46px 0 80px;
}

.doc-card {
  background: var(--cloud-white);
  border: var(--border-paper);
  border-radius: 20px;
  padding: 46px 40px;
  box-shadow: var(--paper-shadow-lg);
  margin-top: 16px;
}

.doc-header {
  margin-bottom: 30px;
  border-bottom: 2px dashed #dbe5ee;
  padding-bottom: 20px;
}

.doc-title {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 8px;
}

.doc-meta {
  color: #607284;
  font-size: 0.92rem;
  font-weight: 600;
}

.doc-content h2 {
  font-family: var(--font-display);
  font-size: 1.45rem;
  color: var(--ink);
  margin: 30px 0 14px;
  border-left: 5px solid var(--sun-tangerine);
  padding-left: 12px;
}

.doc-content p {
  color: #334155;
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 1rem;
}

.doc-content ul {
  margin-bottom: 22px;
  padding-left: 22px;
}

.doc-content li {
  color: #334155;
  line-height: 1.8;
  list-style-type: disc;
  margin-bottom: 8px;
}

.back-home-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--cloud-white);
  border: var(--border-paper);
  border-radius: var(--radius-pill);
  padding: 6px 18px;
  font-family: var(--font-display);
  color: var(--ink);
  font-size: 0.92rem;
  font-weight: 700;
  box-shadow: 2px 2px 0 var(--ink);
  margin-bottom: 18px;
}

.back-home-link:hover {
  background: var(--sun-tangerine-light);
  transform: translateY(-2px);
  box-shadow: 3px 3px 0 var(--ink);
}

/* 推荐资讯卡片列表 */
.news-cards-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-top: 24px;
}

.news-card-item {
  background: var(--sky-wash);
  border: 1.5px solid var(--ink);
  border-radius: 14px;
  padding: 22px;
  box-shadow: 3px 3px 0 var(--ink);
}

.news-card-item h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  color: var(--ink);
  margin-bottom: 8px;
}

.news-card-item p {
  color: #4b5d6e;
  font-size: 0.95rem;
  line-height: 1.65;
  margin-bottom: 10px;
}

.news-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  background: var(--sun-tangerine);
  color: var(--cloud-white);
  padding: 2px 10px;
  border-radius: 6px;
  border: 1px solid var(--ink);
}

/* 响应式适配 @media */
@media (max-width: 992px) {
  .hero-title {
    font-size: 2.3rem;
  }
  
  .features-grid,
  .pricing-grid,
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-menu {
    display: none; /* 移动端保持极简与秒开 */
  }
  
  .hero-box {
    padding: 38px 20px 30px;
    border-radius: 18px;
  }
  
  .hero-title {
    font-size: 1.85rem;
    line-height: 1.3;
  }
  
  .hero-subtitle {
    font-size: 1rem;
    margin-bottom: 24px;
  }
  
  .hero-cta-group {
    flex-direction: column;
    width: 100%;
    gap: 12px;
  }
  
  .hero-cta-group .btn {
    width: 100%;
    min-height: 48px;
  }
  
  .features-grid,
  .matrix-grid,
  .pricing-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }
  
  .section {
    padding: 34px 0;
  }
  
  .section-title {
    font-size: 1.7rem;
  }
  
  .doc-card {
    padding: 26px 18px;
  }
  
  .doc-title {
    font-size: 1.7rem;
  }
  
  .footer-top,
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 18px;
  }
  
  .footer-nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
    width: 100%;
  }
  
  .footer-nav-link {
    display: block;
    width: 100%;
    padding: 6px 0;
    border-bottom: 1.5px dashed #e2e8f0;
  }
}

/* ==========================================================================
   文章详情页与资讯列表页专属 Paper-craft 样式
   ========================================================================== */

/* 面包屑导航 */
.breadcrumb-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.breadcrumb-nav a {
  color: var(--signal-blue);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.breadcrumb-nav a:hover {
  color: var(--sun-tangerine);
}

.breadcrumb-separator {
  color: #94a3b8;
}

.breadcrumb-current {
  color: var(--ink);
  font-weight: 800;
}

/* 文章头部与元信息 */
.article-header {
  border-bottom: 2px dashed #dbe5ee;
  padding-bottom: 24px;
  margin-bottom: 28px;
}

.article-category-badge {
  display: inline-block;
  background: var(--sun-tangerine-light);
  color: var(--ink);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-pill);
  padding: 4px 14px;
  font-size: 0.85rem;
  font-weight: 800;
  box-shadow: 2px 2px 0 var(--ink);
  margin-bottom: 14px;
}

.article-title-h1 {
  font-family: var(--font-display);
  font-size: 2.3rem;
  font-weight: 700;
  line-height: 1.3;
  color: var(--ink);
  margin-bottom: 14px;
}

.article-meta-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.88rem;
  color: #607284;
  font-weight: 600;
}

.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* 结构化文章主体 */
.article-body {
  color: #334155;
  line-height: 1.85;
  font-size: 1.05rem;
}

.article-body h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ink);
  margin: 36px 0 16px;
  border-left: 5px solid var(--sun-tangerine);
  padding-left: 14px;
  line-height: 1.35;
}

.article-body h3 {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--signal-blue);
  margin: 26px 0 12px;
}

.article-body p {
  margin-bottom: 18px;
}

.article-body ul, .article-body ol {
  margin-bottom: 22px;
  padding-left: 26px;
}

.article-body li {
  margin-bottom: 10px;
  line-height: 1.75;
}

.article-body strong {
  color: var(--ink);
  font-weight: 700;
}

/* 重点提示框 (Paper note block) */
.paper-callout {
  background: var(--sky-wash);
  border: 2px solid var(--ink);
  border-radius: 14px;
  padding: 20px 24px;
  margin: 24px 0;
  box-shadow: 3px 3px 0 var(--ink);
  position: relative;
}

.paper-callout.tip {
  border-left: 8px solid var(--signal-blue);
}

.paper-callout.warning {
  border-left: 8px solid var(--sun-tangerine);
}

.paper-callout-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--ink);
}

/* 文章中的代码块 */
.article-code-block {
  background: #f1f5f9;
  border: 1.5px solid var(--ink);
  border-radius: 10px;
  padding: 16px 20px;
  margin: 20px 0;
  overflow-x: auto;
  font-family: Consolas, Monaco, "Courier New", monospace;
  font-size: 0.92rem;
  color: var(--ink);
  line-height: 1.6;
}

/* 作者与版权信息小卡片 */
.author-signature-card {
  background: var(--sky-wash);
  border: 2px solid var(--ink);
  border-radius: 16px;
  padding: 22px 24px;
  margin-top: 40px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: 3px 3px 0 var(--ink);
}

.author-avatar-badge {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--cloud-white);
  border: 2px solid var(--ink);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--signal-blue);
  font-size: 1.3rem;
  flex-shrink: 0;
}

.author-info h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--ink);
}

.author-info p {
  font-size: 0.88rem;
  color: #607284;
  margin-bottom: 0;
}

/* 相关推荐文章网格 */
.related-articles-section {
  margin-top: 50px;
  padding-top: 36px;
  border-top: 2px dashed #dbe5ee;
}

.related-section-title {
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 20px;
}

.related-articles-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.related-article-card {
  background: var(--cloud-white);
  border: 2px solid var(--ink);
  border-radius: 14px;
  padding: 20px;
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.related-article-card:hover {
  transform: translateY(-3px);
  box-shadow: 5px 5px 0 var(--ink);
}

.related-article-card h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--ink);
  margin-bottom: 8px;
}

.related-article-card p {
  font-size: 0.9rem;
  color: #607284;
  line-height: 1.55;
  margin-bottom: 12px;
}

/* 资讯列表页 (News Index) 排版 */
.news-catalog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
  margin-top: 30px;
}

.news-item-card {
  background: var(--cloud-white);
  border: var(--border-paper);
  border-radius: var(--radius-paper);
  padding: 26px;
  box-shadow: var(--paper-shadow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.news-item-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--paper-shadow-lg);
}

.news-card-tag {
  align-self: flex-start;
  font-size: 0.8rem;
  font-weight: 800;
  background: var(--sun-tangerine-light);
  color: var(--ink);
  border: 1.5px solid var(--ink);
  border-radius: 6px;
  padding: 3px 10px;
  margin-bottom: 12px;
}

.news-card-title {
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 10px;
  line-height: 1.35;
}

.news-card-excerpt {
  font-size: 0.92rem;
  color: #607284;
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.news-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1.5px dashed #e2e8f0;
  padding-top: 14px;
  font-size: 0.84rem;
  color: #94a3b8;
  font-weight: 600;
}

.news-read-more {
  color: var(--signal-blue);
  font-weight: 800;
  font-family: var(--font-display);
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.news-read-more:hover {
  color: var(--sun-tangerine);
}

@media (max-width: 992px) {
  .news-catalog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .related-articles-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .article-title-h1 {
    font-size: 1.7rem;
  }
  .news-catalog-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   文章阅读悬浮返回按钮 (Floating Action Buttons)
   ========================================================================== */
.floating-action-group {
  position: fixed;
  right: 24px;
  bottom: 28px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 999;
}

.floating-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  background: var(--cloud-white);
  border: 2px solid var(--ink);
  border-radius: 50%;
  color: var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
  text-decoration: none;
}

.floating-btn:hover {
  background: var(--sun-tangerine-light);
  color: var(--signal-blue);
  transform: translateY(-3px);
  box-shadow: 4px 4px 0 var(--ink);
}

.floating-btn:active {
  transform: translate(2px, 2px);
  box-shadow: 1px 1px 0 var(--ink);
}

.floating-btn svg {
  width: 20px;
  height: 20px;
  stroke: currentColor;
  stroke-width: 2.2;
}

/* ==========================================================================
   文章底部上一篇 / 下一篇连续阅读导航 (Prev-Next Navigation)
   ========================================================================== */
.article-prev-next-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 40px;
  padding-top: 28px;
  border-top: 2px dashed #dbe5ee;
}

.prev-next-card {
  background: var(--sky-wash);
  border: 2px solid var(--ink);
  border-radius: 14px;
  padding: 16px 20px;
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-decoration: none;
}

.prev-next-card:hover {
  background: var(--cloud-white);
  transform: translateY(-2px);
  box-shadow: 4px 4px 0 var(--ink);
}

.prev-next-label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--signal-blue);
  margin-bottom: 4px;
}

.prev-next-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
  line-height: 1.4;
}

.prev-next-card.next {
  text-align: right;
}

@media (max-width: 768px) {
  .article-prev-next-nav {
    grid-template-columns: 1fr;
  }
  .prev-next-card.next {
    text-align: left;
  }
  .floating-action-group {
    right: 16px;
    bottom: 20px;
  }
}

/* ==========================================================================
   首页 Hero 剪纸风格手工插图相框 (Paper-craft Hero Illustration)
   ========================================================================== */
.hero-illustration-wrapper {
  margin: 28px auto 32px;
  max-width: 640px;
  position: relative;
}

.hero-illustration-frame {
  background: var(--sky-wash);
  border: 2px solid var(--ink);
  border-radius: 18px;
  padding: 16px;
  box-shadow: 4px 4px 0 var(--ink);
  position: relative;
  overflow: hidden;
}

.hero-illustration-svg {
  width: 100%;
  height: auto;
  display: block;
}

.hero-illustration-tag {
  position: absolute;
  bottom: 12px;
  right: 16px;
  background: var(--cloud-white);
  border: 1.5px solid var(--ink);
  border-radius: 6px;
  padding: 2px 10px;
  font-family: var(--font-display);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--ink);
  box-shadow: 2px 2px 0 var(--ink);
}


/* ==========================================================================
   悬浮操作按钮组 (Floating Action Group) - Paper-craft 手作风格
   ========================================================================== */
.floating-action-group {
  position: fixed;
  bottom: 28px;
  right: 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 9000;
}

.floating-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--cloud-white);
  border: 2px solid var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  cursor: pointer;
  font-size: 1.3rem;
  text-decoration: none;
  color: var(--ink);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}

.floating-btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--ink);
}

.floating-btn:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0 var(--ink);
}

.floating-btn.back-top {
  background: var(--signal-blue);
  color: var(--cloud-white);
}

.floating-btn.back-home {
  background: var(--sun-tangerine);
  color: var(--cloud-white);
}

.floating-btn.back-list {
  background: var(--sky-wash);
  color: var(--ink);
}

/* ==========================================================================
   文章上一篇 / 下一篇导航 (Article Prev-Next Navigation)
   ========================================================================== */
.article-prev-next-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 48px 0 32px;
}

@media (max-width: 600px) {
  .article-prev-next-nav {
    grid-template-columns: 1fr;
  }
}

.prev-next-card {
  display: block;
  background: var(--cloud-white);
  border: 2px solid var(--ink);
  border-radius: var(--radius-paper);
  padding: 16px 20px;
  text-decoration: none;
  color: var(--ink);
  box-shadow: var(--paper-shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.prev-next-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--paper-shadow-lg);
}

.prev-next-card .nav-label {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--signal-blue);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  display: block;
  margin-bottom: 6px;
}

.prev-next-card .nav-title {
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-weight: 700;
  line-height: 1.4;
  display: block;
}

.prev-next-card.card-next {
  text-align: right;
}