/* ==========================================================================
   FastLink 官方推广站 - 折纸蝴蝶主题样式表 (Origami Butterfly Theme)
   Palette: Blush #FBEAF0, Raspberry #A94770, Pale Mint #CDE7DA, Ink #403342
   ========================================================================== */

:root {
  /* 主色调定义 */
  --color-blush: #FBEAF0;
  --color-blush-light: #fdf5f8;
  --color-blush-dark: #f0d5df;
  --color-raspberry: #A94770;
  --color-raspberry-dark: #863356;
  --color-raspberry-light: #f5dbe6;
  --color-mint: #CDE7DA;
  --color-mint-light: #ebf6f1;
  --color-mint-dark: #3e7e66;
  --color-ink: #403342;
  --color-ink-light: #5f4f61;
  --color-ink-muted: #7d6b80;
  --color-ink-faint: #ad9eb0;
  
  /* 纸张质感与阴影 */
  --paper-white: #FFFDFE;
  --paper-cream: #FCF8F9;
  --paper-crease: rgba(64, 51, 66, 0.08);
  --paper-border: rgba(169, 71, 112, 0.15);
  
  /* 折纸立体投影 */
  --shadow-sm: 0 2px 6px rgba(64, 51, 66, 0.06);
  --shadow-md: 0 8px 24px rgba(64, 51, 66, 0.08), 0 2px 6px rgba(64, 51, 66, 0.04);
  --shadow-lg: 0 16px 36px rgba(169, 71, 112, 0.14), 0 4px 12px rgba(64, 51, 66, 0.06);
  --shadow-crease: inset 1px 1px 0 rgba(255, 255, 255, 0.7), inset -1px -1px 0 rgba(64, 51, 66, 0.05);

  /* 字体族定义 */
  --font-serif: "Songti SC", "SimSun", "STSong", "Noto Serif SC", "Source Han Serif SC", "Georgia", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  /* 基础尺寸与过渡 */
  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 18px;
  --radius-origami: 2px 14px 2px 14px;
  --transition-fast: 0.18s ease;
  --transition-normal: 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
  --transition-flow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --max-width: 1220px;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-blush);
  color: var(--color-ink);
  line-height: 1.7;
  overflow-x: hidden;
  position: relative;
  background-image: 
    radial-gradient(var(--paper-crease) 1px, transparent 0),
    linear-gradient(135deg, rgba(251, 234, 240, 0.6) 0%, rgba(205, 231, 218, 0.2) 100%);
  background-size: 28px 28px, 100% 100%;
}

/* 键盘可聚焦视觉提示 */
:focus-visible {
  outline: 3px solid var(--color-raspberry);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* 链接基础样式 */
a {
  color: var(--color-raspberry);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-raspberry-dark);
}

img, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

/* 标题字体 */
h1, h2, h3, h4, .brand-font {
  font-family: var(--font-serif);
  color: var(--color-ink);
  font-weight: 700;
  letter-spacing: -0.01em;
}

/* ==========================================================================
   折纸质感分割线 (Diagonal Paper-Fold Separators)
   ========================================================================== */
.paper-separator {
  position: relative;
  width: 100%;
  height: 48px;
  overflow: hidden;
  pointer-events: none;
}

.paper-separator svg {
  width: 100%;
  height: 100%;
  preserve-aspect-ratio: none;
}

.paper-fold-top {
  transform: rotate(180deg);
}

/* ==========================================================================
   顶部导航栏 (Header & Navigation)
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 253, 254, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--paper-border);
  box-shadow: 0 4px 16px rgba(64, 51, 66, 0.04);
  transition: background var(--transition-normal);
}

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

/* 品牌 Logo 与折纸蝴蝶徽标 */
.brand-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-ink);
  text-decoration: none;
}

.brand-emblem {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  transition: transform var(--transition-normal);
}

.brand-logo:hover .brand-emblem {
  transform: rotate(-8deg) scale(1.08);
}

.brand-name {
  font-family: var(--font-serif);
  color: var(--color-raspberry);
  letter-spacing: 0.05em;
}

.brand-tag {
  font-size: 0.75rem;
  font-family: var(--font-sans);
  background: var(--color-mint);
  color: var(--color-mint-dark);
  padding: 2px 7px;
  border-radius: 4px;
  font-weight: 600;
  margin-left: 2px;
}

/* 导航链接 */
.main-nav {
  display: flex;
  align-items: center;
  gap: 22px;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: 20px;
  align-items: center;
}

.nav-link {
  font-size: 0.95rem;
  color: var(--color-ink-light);
  font-weight: 500;
  position: relative;
  padding: 6px 2px;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--color-raspberry);
  transition: width var(--transition-fast);
}

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

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

/* 导航操作区 (控制按钮与CTA) */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* 全局动效暂停/恢复按钮 */
.motion-toggle-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  font-size: 0.82rem;
  color: var(--color-ink-light);
  background: var(--color-blush-light);
  border: 1px solid var(--paper-border);
  border-radius: 20px;
  transition: all var(--transition-fast);
}

.motion-toggle-btn:hover {
  background: var(--paper-white);
  color: var(--color-raspberry);
  border-color: var(--color-raspberry);
}

/* 汉堡菜单按钮 (移动端) */
.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 32px;
  padding: 5px;
  background: transparent;
  border-radius: var(--radius-sm);
  z-index: 1010;
}

.hamburger-line {
  width: 100%;
  height: 2px;
  background-color: var(--color-ink);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
  transform-origin: center;
}

.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(2) {
  opacity: 0;
}
.hamburger-btn[aria-expanded="true"] .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ==========================================================================
   通用折纸按钮 (Origami Buttons)
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 26px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-origami);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
  position: relative;
  box-shadow: 2px 3px 0 var(--paper-crease);
  cursor: pointer;
}

.btn:active {
  transform: translateY(2px) scale(0.98);
  box-shadow: 0 1px 0 var(--paper-crease);
}

.btn-primary {
  background: var(--color-raspberry);
  color: #fff;
  border: 1px solid var(--color-raspberry-dark);
}

.btn-primary:hover {
  background: var(--color-raspberry-dark);
  color: #fff;
  box-shadow: 0 6px 18px rgba(169, 71, 112, 0.35);
}

.btn-secondary {
  background: var(--paper-white);
  color: var(--color-ink);
  border: 1px solid var(--paper-border);
}

.btn-secondary:hover {
  background: var(--color-blush-light);
  color: var(--color-raspberry);
  border-color: var(--color-raspberry);
}

.btn-mint {
  background: var(--color-mint);
  color: var(--color-mint-dark);
  border: 1px solid rgba(62, 126, 102, 0.3);
}

.btn-mint:hover {
  background: #bfe0d0;
  color: var(--color-mint-dark);
}

.btn-sm {
  padding: 7px 16px;
  font-size: 0.88rem;
}

/* ==========================================================================
   Hero 首屏折纸蝴蝶主题区域
   ========================================================================== */
.hero-section {
  position: relative;
  padding: 60px 0 80px 0;
  overflow: hidden;
  background: linear-gradient(175deg, rgba(255, 253, 254, 0.7) 0%, rgba(251, 234, 240, 0.9) 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 40px;
  align-items: center;
}

.hero-content {
  max-width: 650px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--paper-white);
  border: 1px solid var(--paper-border);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  color: var(--color-raspberry);
  font-weight: 600;
  margin-bottom: 22px;
  box-shadow: var(--shadow-sm);
}

.hero-title {
  font-size: clamp(2.4rem, 4.8vw, 3.8rem);
  line-height: 1.18;
  color: var(--color-ink);
  margin-bottom: 20px;
  font-weight: 800;
}

.hero-title-highlight {
  color: var(--color-raspberry);
  position: relative;
  display: inline-block;
}

.hero-title-highlight::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 8px;
  background-color: rgba(205, 231, 218, 0.55);
  z-index: -1;
  transform: rotate(-1deg);
}

.hero-desc {
  font-size: 1.12rem;
  color: var(--color-ink-light);
  line-height: 1.8;
  margin-bottom: 34px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 30px;
}

.hero-trust-badges {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.88rem;
  color: var(--color-ink-muted);
  border-top: 1px dashed rgba(169, 71, 112, 0.2);
  padding-top: 20px;
}

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

.trust-icon {
  color: var(--color-mint-dark);
}

/* Hero 右侧折纸艺术组合区 (Origami Art Composition) */
.hero-art-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 420px;
}

.hero-art-canvas {
  position: relative;
  width: 100%;
  max-width: 480px;
  height: 440px;
  background: linear-gradient(135deg, rgba(205, 231, 218, 0.45) 0%, rgba(251, 234, 240, 0.5) 100%);
  border-radius: 24px 6px 24px 6px;
  border: 1px solid rgba(255, 255, 255, 0.8);
  box-shadow: var(--shadow-lg);
  padding: 24px;
  overflow: hidden;
}

/* 装饰性折纸背景几何多边形 */
.origami-backdrop-polygon {
  position: absolute;
  top: -20px;
  right: -20px;
  width: 240px;
  height: 240px;
  background: rgba(255, 255, 255, 0.4);
  clip-path: polygon(25% 0%, 100% 0%, 75% 100%, 0% 100%);
  transform: rotate(18deg);
  pointer-events: none;
}

.origami-crease-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(45deg, rgba(64, 51, 66, 0.03) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(64, 51, 66, 0.03) 25%, transparent 25%);
  background-size: 40px 40px;
  pointer-events: none;
}

/* 巨幅主折纸蝴蝶 (Main Origami Butterfly) */
.main-origami-butterfly {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 280px;
  height: 240px;
  filter: drop-shadow(0 14px 18px rgba(64, 51, 66, 0.16));
  animation: butterflyFloat 6s ease-in-out infinite alternate;
}

/* 伴随轻舞的小折纸蝴蝶 */
.floating-butterfly-1 {
  position: absolute;
  top: 35px;
  left: 20px;
  width: 72px;
  height: 60px;
  filter: drop-shadow(0 6px 8px rgba(64, 51, 66, 0.1));
  animation: flutterPath1 8s ease-in-out infinite alternate;
}

.floating-butterfly-2 {
  position: absolute;
  bottom: 45px;
  right: 25px;
  width: 86px;
  height: 74px;
  filter: drop-shadow(0 8px 10px rgba(64, 51, 66, 0.12));
  animation: flutterPath2 9s ease-in-out infinite alternate;
}

/* 折纸叶子摇曳 (Swaying Paper Leaves) */
.paper-leaf {
  position: absolute;
  pointer-events: none;
  transform-origin: bottom center;
}

.paper-leaf-1 {
  bottom: 12px;
  left: 30px;
  width: 60px;
  height: 80px;
  animation: leafSway 4.5s ease-in-out infinite alternate;
}

.paper-leaf-2 {
  top: 20px;
  right: 40px;
  width: 50px;
  height: 70px;
  animation: leafSway 5.5s ease-in-out infinite alternate-reverse;
}

/* 折纸信息悬浮卡片 */
.origami-info-pill {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: var(--radius-origami);
  padding: 12px 18px;
  border: 1px solid var(--paper-border);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(8px);
}

.pill-label {
  font-size: 0.82rem;
  color: var(--color-ink-muted);
}

.pill-value {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--color-raspberry);
}

/* ==========================================================================
   SVG 折纸蝴蝶翅膀拍打核心动画 (Flapping Wing Animations)
   ========================================================================== */
.wing-left {
  transform-origin: 50% 50%;
  animation: wingFlapLeft 1.9s ease-in-out infinite alternate;
}

.wing-right {
  transform-origin: 50% 50%;
  animation: wingFlapRight 1.9s ease-in-out infinite alternate;
}

@keyframes wingFlapLeft {
  0% {
    transform: perspective(400px) rotateY(0deg) scaleX(1);
  }
  50% {
    transform: perspective(400px) rotateY(28deg) scaleX(0.85);
  }
  100% {
    transform: perspective(400px) rotateY(-18deg) scaleX(1.04);
  }
}

@keyframes wingFlapRight {
  0% {
    transform: perspective(400px) rotateY(0deg) scaleX(1);
  }
  50% {
    transform: perspective(400px) rotateY(-28deg) scaleX(0.85);
  }
  100% {
    transform: perspective(400px) rotateY(18deg) scaleX(1.04);
  }
}

@keyframes butterflyFloat {
  0% {
    transform: translate(-50%, -50%) translateY(0px) rotate(0deg);
  }
  50% {
    transform: translate(-50%, -50%) translateY(-14px) rotate(2deg);
  }
  100% {
    transform: translate(-50%, -50%) translateY(8px) rotate(-1.5deg);
  }
}

@keyframes flutterPath1 {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }
  50% {
    transform: translate(16px, -18px) rotate(6deg);
  }
  100% {
    transform: translate(-10px, 12px) rotate(-4deg);
  }
}

@keyframes flutterPath2 {
  0% {
    transform: translate(0, 0) rotate(0deg);
  }
  50% {
    transform: translate(-22px, -14px) rotate(-8deg);
  }
  100% {
    transform: translate(14px, 16px) rotate(5deg);
  }
}

@keyframes leafSway {
  0% {
    transform: rotate(0deg);
  }
  50% {
    transform: rotate(5deg);
  }
  100% {
    transform: rotate(-4deg);
  }
}

/* ==========================================================================
   板块公用标题 (Section Header)
   ========================================================================== */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 52px auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-raspberry);
  background: var(--color-blush);
  border: 1px solid var(--paper-border);
  padding: 4px 14px;
  border-radius: 16px;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.section-title {
  font-size: clamp(1.9rem, 3.2vw, 2.6rem);
  color: var(--color-ink);
  margin-bottom: 16px;
  line-height: 1.3;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--color-ink-light);
  line-height: 1.7;
}

/* ==========================================================================
   产品优势展示行 (Editorial Feature Rows / Advantages)
   ========================================================================== */
.advantages-section {
  padding: 70px 0 80px 0;
  background: var(--paper-white);
  position: relative;
}

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

.advantage-card {
  background: var(--color-blush-light);
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-origami);
  padding: 34px 28px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.advantage-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(169, 71, 112, 0.35);
}

.card-origami-badge {
  position: absolute;
  top: 0;
  right: 0;
  width: 48px;
  height: 48px;
  background: var(--color-mint);
  clip-path: polygon(100% 0, 0 0, 100% 100%);
  border-top-right-radius: 12px;
}

.advantage-icon-wrapper {
  width: 64px;
  height: 64px;
  background: var(--paper-white);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  border: 1px solid var(--paper-border);
  box-shadow: var(--shadow-sm);
  color: var(--color-raspberry);
}

.advantage-title {
  font-size: 1.35rem;
  margin-bottom: 14px;
  color: var(--color-ink);
}

.advantage-desc {
  font-size: 0.95rem;
  color: var(--color-ink-light);
  line-height: 1.75;
  flex-grow: 1;
}

.advantage-specs {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px dashed rgba(64, 51, 66, 0.12);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-ink-muted);
}

/* ==========================================================================
   网络拓扑与分支图谱 (Branching Network Diagram)
   ========================================================================== */
.network-section {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--color-blush-light) 0%, var(--color-blush) 100%);
  position: relative;
}

.network-diagram-container {
  background: var(--paper-white);
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

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

.network-stage {
  background: var(--paper-cream);
  border: 1px solid rgba(169, 71, 112, 0.12);
  border-radius: var(--radius-origami);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  position: relative;
}

.stage-step-tag {
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--color-mint-dark);
  background: var(--color-mint);
  padding: 2px 8px;
  border-radius: 4px;
  align-self: flex-start;
  margin-bottom: 12px;
}

.stage-title {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: var(--color-ink);
}

.stage-desc {
  font-size: 0.88rem;
  color: var(--color-ink-light);
  line-height: 1.6;
  margin-bottom: 16px;
}

.stage-nodes-list {
  list-style: none;
  font-size: 0.85rem;
  color: var(--color-ink-muted);
}

.stage-nodes-list li {
  padding: 5px 0;
  border-top: 1px solid rgba(64, 51, 66, 0.05);
  display: flex;
  align-items: center;
  gap: 6px;
}

.stage-nodes-list li::before {
  content: "◆";
  font-size: 0.6rem;
  color: var(--color-raspberry);
}

.network-connect-arrow {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-raspberry);
  font-size: 1.5rem;
}

/* ==========================================================================
   AI 与流媒体场景覆盖 (AI & Streaming Matrix)
   ========================================================================== */
.ecosystem-section {
  padding: 80px 0;
  background: var(--paper-white);
  position: relative;
}

.ecosystem-tabs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
}

.ecosystem-column {
  background: var(--color-blush-light);
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-origami);
  padding: 34px;
  box-shadow: var(--shadow-sm);
}

.eco-col-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
  padding-bottom: 16px;
  border-bottom: 2px solid rgba(169, 71, 112, 0.15);
}

.eco-col-icon {
  width: 48px;
  height: 48px;
  background: var(--color-raspberry);
  color: #fff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.eco-col-title {
  font-size: 1.4rem;
  color: var(--color-ink);
}

.eco-services-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.eco-service-card {
  background: var(--paper-white);
  border: 1px solid rgba(169, 71, 112, 0.12);
  border-radius: var(--radius-sm);
  padding: 16px;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.eco-service-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-raspberry);
}

.service-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.service-name {
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--color-ink);
}

.service-status-pill {
  font-size: 0.72rem;
  padding: 2px 6px;
  border-radius: 3px;
  background: var(--color-mint);
  color: var(--color-mint-dark);
  font-weight: 600;
}

.service-note {
  font-size: 0.82rem;
  color: var(--color-ink-muted);
  line-height: 1.5;
}

/* ==========================================================================
   交互特色功能：三花寻蝶实用配置技巧 (Interactive Flower & Butterfly)
   ========================================================================== */
.flower-interaction-section {
  padding: 70px 0 80px 0;
  background: linear-gradient(135deg, rgba(251, 234, 240, 0.8) 0%, rgba(205, 231, 218, 0.6) 100%);
  position: relative;
  border-top: 1px solid var(--paper-border);
  border-bottom: 1px solid var(--paper-border);
}

.interactive-garden-wrapper {
  background: var(--paper-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--paper-border);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.flower-selector-row {
  display: flex;
  justify-content: center;
  gap: 20px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.flower-btn {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 16px 24px;
  background: var(--color-blush-light);
  border: 2px solid var(--paper-border);
  border-radius: var(--radius-origami);
  transition: all var(--transition-normal);
  min-width: 180px;
  position: relative;
}

.flower-btn:hover {
  background: #fff;
  border-color: var(--color-raspberry);
  transform: translateY(-3px);
}

.flower-btn[aria-pressed="true"] {
  background: var(--paper-white);
  border-color: var(--color-raspberry);
  box-shadow: 0 8px 20px rgba(169, 71, 112, 0.2);
}

.flower-btn[aria-pressed="true"]::after {
  content: "已降落 🦋";
  position: absolute;
  top: -12px;
  right: 10px;
  background: var(--color-raspberry);
  color: #fff;
  font-size: 0.72rem;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
}

.flower-btn-icon {
  width: 52px;
  height: 52px;
  margin-bottom: 10px;
  transition: transform var(--transition-fast);
}

.flower-btn:hover .flower-btn-icon {
  transform: scale(1.1) rotate(6deg);
}

.flower-btn-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 4px;
}

.flower-btn-subtitle {
  font-size: 0.78rem;
  color: var(--color-ink-muted);
}

/* 蝴蝶飞行展示舞台与技巧揭秘面板 */
.garden-stage-display {
  position: relative;
  background: var(--color-blush-light);
  border: 1px dashed rgba(169, 71, 112, 0.3);
  border-radius: var(--radius-md);
  padding: 30px;
  min-height: 200px;
}

.guided-butterfly {
  position: absolute;
  top: 24px;
  left: 30px;
  width: 64px;
  height: 54px;
  transition: transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
  filter: drop-shadow(0 6px 10px rgba(64, 51, 66, 0.15));
  z-index: 5;
  pointer-events: none;
}

.tip-reveal-card {
  background: var(--paper-white);
  border-radius: var(--radius-sm);
  padding: 24px 28px;
  margin-left: 80px;
  border-left: 4px solid var(--color-raspberry);
  box-shadow: var(--shadow-sm);
  transition: opacity 0.3s ease;
}

.tip-category-badge {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-raspberry);
  margin-bottom: 6px;
  display: block;
}

.tip-heading {
  font-size: 1.25rem;
  color: var(--color-ink);
  margin-bottom: 12px;
}

.tip-body {
  font-size: 0.95rem;
  color: var(--color-ink-light);
  line-height: 1.7;
}

/* ==========================================================================
   清晰套餐价格 (Pricing Table & Cards)
   ========================================================================== */
.pricing-section {
  padding: 80px 0;
  background: var(--paper-white);
  position: relative;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 30px;
}

.pricing-card {
  background: var(--paper-cream);
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-origami);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

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

.pricing-card.featured {
  background: #fff;
  border: 2px solid var(--color-raspberry);
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

.pricing-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-raspberry);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 3px 14px;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(169, 71, 112, 0.3);
}

.pricing-plan-name {
  font-size: 1.35rem;
  color: var(--color-ink);
  margin-bottom: 8px;
  text-align: center;
}

.pricing-price-box {
  text-align: center;
  margin: 18px 0;
  padding-bottom: 18px;
  border-bottom: 1px dashed rgba(64, 51, 66, 0.12);
}

.price-currency {
  font-size: 1.1rem;
  color: var(--color-raspberry);
  font-weight: 700;
}

.price-amount {
  font-size: 2.3rem;
  font-weight: 800;
  color: var(--color-raspberry);
  font-family: var(--font-serif);
}

.price-period {
  font-size: 0.85rem;
  color: var(--color-ink-muted);
}

.pricing-features-list {
  list-style: none;
  font-size: 0.9rem;
  color: var(--color-ink-light);
  margin-bottom: 28px;
  flex-grow: 1;
}

.pricing-features-list li {
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.pricing-features-list li::before {
  content: "✔";
  color: var(--color-mint-dark);
  font-weight: 700;
}

.pricing-notice {
  text-align: center;
  font-size: 0.86rem;
  color: var(--color-ink-muted);
  margin-top: 14px;
  background: var(--color-blush);
  padding: 10px 16px;
  border-radius: var(--radius-sm);
  border: 1px dashed rgba(169, 71, 112, 0.2);
}

/* ==========================================================================
   九大独立文章插图卡片矩阵 (3x3 Grid Directly After Pricing)
   ========================================================================== */
.articles-preview-section {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--color-blush-light) 0%, var(--color-blush) 100%);
  position: relative;
}

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

.article-card {
  background: var(--paper-white);
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-origami);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  text-decoration: none;
  color: inherit;
}

.article-card:hover, .article-card:focus-visible {
  transform: perspective(800px) rotateX(2deg) translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-raspberry);
}

/* 折纸插图区 (Origami Cartoon Illustration Container) */
.article-thumb-origami {
  height: 180px;
  background: linear-gradient(135deg, rgba(251, 234, 240, 0.95) 0%, rgba(205, 231, 218, 0.55) 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid rgba(169, 71, 112, 0.12);
  padding: 10px;
}

.article-thumb-origami::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: 
    radial-gradient(rgba(169, 71, 112, 0.08) 1.5px, transparent 0),
    linear-gradient(45deg, rgba(255, 255, 255, 0.4) 25%, transparent 25%);
  background-size: 20px 20px, 40px 40px;
  pointer-events: none;
}

.article-origami-svg {
  width: 145px;
  height: 135px;
  max-width: 92%;
  max-height: 92%;
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1), filter 0.5s ease;
  filter: drop-shadow(0 6px 12px rgba(64, 51, 66, 0.12));
  z-index: 2;
}

.article-card:hover .article-origami-svg,
.article-card:focus-visible .article-origami-svg {
  transform: scale(1.12) translateY(-6px) rotate(2deg);
  filter: drop-shadow(0 10px 18px rgba(169, 71, 112, 0.25));
}

/* 折纸卡通微动效辅助类 */
@keyframes cartoonBob {
  0% { transform: translateY(0); }
  50% { transform: translateY(-5px); }
  100% { transform: translateY(0); }
}

@keyframes cartoonWiggle {
  0% { transform: rotate(0deg); }
  25% { transform: rotate(-4deg); }
  75% { transform: rotate(4deg); }
  100% { transform: rotate(0deg); }
}

@keyframes cartoonTwinkle {
  0%, 100% { opacity: 0.35; transform: scale(0.85); }
  50% { opacity: 1; transform: scale(1.2); }
}

.anim-bob {
  animation: cartoonBob 3.2s ease-in-out infinite;
  transform-origin: center bottom;
}

.anim-wiggle {
  animation: cartoonWiggle 4s ease-in-out infinite;
  transform-origin: center center;
}

.anim-twinkle {
  animation: cartoonTwinkle 2.4s ease-in-out infinite;
  transform-origin: center center;
}

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

.article-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-ink-muted);
  margin-bottom: 10px;
}

.article-cat-tag {
  background: var(--color-blush);
  color: var(--color-raspberry);
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: 600;
}

.article-card-title {
  font-size: 1.2rem;
  line-height: 1.4;
  color: var(--color-ink);
  margin-bottom: 10px;
  font-weight: 700;
}

.article-card-excerpt {
  font-size: 0.9rem;
  color: var(--color-ink-light);
  line-height: 1.6;
  margin-bottom: 18px;
  flex-grow: 1;
}

.article-card-readmore {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--color-raspberry);
  transition: gap var(--transition-fast);
}

.article-card:hover .article-card-readmore {
  gap: 8px;
}

/* ==========================================================================
   真实用户体验与评价参考 (Testimonials with Strict Compliance Label)
   ========================================================================== */
.testimonials-section {
  padding: 70px 0 80px 0;
  background: var(--paper-white);
  position: relative;
}

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

.testimonial-card {
  background: var(--color-blush-light);
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-origami);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  position: relative;
  display: flex;
  flex-direction: column;
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.testimonial-avatar {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: var(--color-mint);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--color-mint-dark);
  border: 2px solid #fff;
}

.testimonial-author {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-ink);
}

.testimonial-role {
  font-size: 0.8rem;
  color: var(--color-ink-muted);
}

.testimonial-body {
  font-size: 0.92rem;
  color: var(--color-ink-light);
  line-height: 1.7;
  font-style: italic;
  flex-grow: 1;
  margin-bottom: 14px;
}

.testimonial-disclaimer {
  font-size: 0.74rem;
  color: var(--color-ink-muted);
  border-top: 1px dashed rgba(64, 51, 66, 0.1);
  padding-top: 10px;
}

/* ==========================================================================
   手风琴常见问答 (Accordion FAQ)
   ========================================================================== */
.faq-section {
  padding: 80px 0;
  background: linear-gradient(180deg, var(--color-blush-light) 0%, var(--paper-white) 100%);
  position: relative;
}

.faq-container {
  max-width: 860px;
  margin: 0 auto;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.faq-item {
  background: var(--paper-white);
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-origami);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast);
}

.faq-item[open] {
  border-color: var(--color-raspberry);
}

.faq-summary {
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-ink);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

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

.faq-icon-arrow {
  width: 20px;
  height: 20px;
  transition: transform var(--transition-fast);
  color: var(--color-raspberry);
  flex-shrink: 0;
}

.faq-item[open] .faq-icon-arrow {
  transform: rotate(180deg);
}

.faq-content {
  padding: 0 24px 22px 24px;
  font-size: 0.95rem;
  color: var(--color-ink-light);
  line-height: 1.75;
  border-top: 1px solid rgba(169, 71, 112, 0.08);
  padding-top: 16px;
}

/* ==========================================================================
   页脚与推荐链接 (Concise Footer & Recommendations)
   ========================================================================== */
.site-footer {
  background: var(--color-ink);
  color: #f7eff3;
  padding: 60px 0 30px 0;
  position: relative;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand-desc {
  font-size: 0.9rem;
  color: rgba(247, 239, 243, 0.7);
  line-height: 1.7;
  margin-top: 14px;
}

.footer-col-title {
  font-size: 1.05rem;
  color: #fff;
  margin-bottom: 18px;
  font-family: var(--font-serif);
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 0.9rem;
}

.footer-links-list a {
  color: rgba(247, 239, 243, 0.75);
}

.footer-links-list a:hover {
  color: var(--color-mint);
}

.footer-disclosure-box {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 0.8rem;
  color: rgba(247, 239, 243, 0.65);
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: rgba(247, 239, 243, 0.55);
  flex-wrap: wrap;
  gap: 12px;
}

.footer-recommend-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-recommend-link {
  color: var(--color-mint);
  font-weight: 500;
}

.footer-recommend-link:hover {
  color: #fff;
  text-decoration: underline;
}

/* ==========================================================================
   文章详情页公用样式 (Article Template Styles)
   ========================================================================== */
.article-header-banner {
  background: linear-gradient(135deg, rgba(251, 234, 240, 0.9) 0%, rgba(205, 231, 218, 0.5) 100%);
  padding: 50px 0;
  border-bottom: 1px solid var(--paper-border);
}

.article-breadcrumb {
  font-size: 0.85rem;
  color: var(--color-ink-muted);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.article-breadcrumb a {
  color: var(--color-ink-light);
}

.article-main-title {
  font-size: clamp(2rem, 3.5vw, 2.7rem);
  line-height: 1.25;
  color: var(--color-ink);
  margin-bottom: 16px;
}

.article-header-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.88rem;
  color: var(--color-ink-muted);
  flex-wrap: wrap;
}

.article-layout {
  display: grid;
  grid-template-columns: 2.8fr 1.2fr;
  gap: 48px;
  padding: 60px 0;
}

.article-content-body {
  background: var(--paper-white);
  padding: 44px;
  border-radius: var(--radius-origami);
  border: 1px solid var(--paper-border);
  box-shadow: var(--shadow-sm);
  font-size: 1.05rem;
  line-height: 1.85;
}

.article-content-body h2 {
  font-size: 1.65rem;
  margin: 36px 0 16px 0;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-blush);
  color: var(--color-ink);
}

.article-content-body h3 {
  font-size: 1.3rem;
  margin: 26px 0 12px 0;
  color: var(--color-raspberry-dark);
}

.article-content-body p {
  margin-bottom: 18px;
  color: var(--color-ink-light);
}

.article-content-body ul, .article-content-body ol {
  margin: 16px 0 22px 24px;
  color: var(--color-ink-light);
}

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

.article-content-body code {
  background: var(--color-blush);
  color: var(--color-raspberry-dark);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.9em;
}

.article-callout {
  background: var(--color-blush-light);
  border-left: 4px solid var(--color-raspberry);
  padding: 20px;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  margin: 24px 0;
}

.article-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-widget {
  background: var(--paper-white);
  border: 1px solid var(--paper-border);
  border-radius: var(--radius-origami);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.sidebar-title {
  font-size: 1.15rem;
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--paper-border);
  color: var(--color-ink);
}

/* 文章页顶部卡通吉祥物布局 */
.article-banner-flex {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
}

.article-banner-text {
  flex: 1;
  min-width: 280px;
}

.article-banner-mascot {
  width: 140px;
  height: 120px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  filter: drop-shadow(0 6px 14px rgba(169, 71, 112, 0.18));
}

.article-banner-mascot svg {
  width: 100%;
  height: 100%;
}

@media (max-width: 768px) {
  .article-banner-flex {
    flex-direction: column-reverse;
    align-items: flex-start;
  }
  .article-banner-mascot {
    width: 110px;
    height: 95px;
    margin-bottom: 8px;
  }
}

/* ==========================================================================
   动效暂停与无障碍 (Reduced Motion Fallback & Global Pause)
   ========================================================================== */
body.motion-paused *,
body.motion-paused *::before,
body.motion-paused *::after {
  animation-play-state: paused !important;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   响应式断点适配 (375px, 390px, 430px, 768px, 1024px, 1440px)
   ========================================================================== */

/* 1024px (平板横屏 / 小桌面) */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-art-wrapper {
    order: -1;
    min-height: 360px;
  }

  .network-flow-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .article-layout {
    grid-template-columns: 1fr;
  }
}

/* 768px (平板竖屏 / 大手机) */
@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--paper-white);
    flex-direction: column;
    padding: 24px;
    box-shadow: 0 12px 24px rgba(64, 51, 66, 0.12);
    border-bottom: 1px solid var(--paper-border);
    transform: translateY(-150%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-normal), opacity var(--transition-normal);
  }

  .main-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-list {
    flex-direction: column;
    width: 100%;
    align-items: flex-start;
    gap: 14px;
  }

  .hamburger-btn {
    display: flex;
  }

  .advantages-grid {
    grid-template-columns: 1fr;
  }

  .ecosystem-tabs-grid {
    grid-template-columns: 1fr;
  }

  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .flower-selector-row {
    flex-direction: column;
  }

  .flower-btn {
    width: 100%;
  }

  .tip-reveal-card {
    margin-left: 0;
    margin-top: 60px;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* 430px / 390px / 375px (移动端手机核心适配) */
@media (max-width: 480px) {
  .hero-title {
    font-size: 2.1rem;
  }

  .hero-cta-group {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta-group .btn {
    width: 100%;
  }

  .network-flow-grid {
    grid-template-columns: 1fr;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .articles-grid {
    grid-template-columns: 1fr;
  }

  .eco-services-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .interactive-garden-wrapper {
    padding: 20px 16px;
  }

  .article-content-body {
    padding: 24px 18px;
  }
}