/* ==========================================================================
   boostnet机场 网络服务品牌 - 浅色锦鲤水庭主题样式库
   ========================================================================== */

:root {
  /* 核心五色规范 */
  --bg-main: #F5FAF6;          /* 水庭浅底 */
  --color-water-green: #CEE6DD; /* 水绿 */
  --color-light-blue: #D6EAF2;  /* 浅水蓝 */
  --color-lotus-pink: #EFCFD9;  /* 淡荷粉 */
  --color-sand-beige: #EEE2C9;  /* 沙米 */
  --color-text-main: #40554D;   /* 正文深绿灰 */

  /* 衍生辅助层级 */
  --color-text-muted: #647B72;  /* 次要文本 */
  --color-text-light: #899E96;  /* 弱化文本 */
  --border-subtle: rgba(64, 85, 77, 0.12); /* 细线描边 */
  --border-accent: rgba(206, 230, 221, 0.6);
  --card-bg: rgba(255, 255, 255, 0.72);
  --card-hover: rgba(255, 255, 255, 0.95);
  --shadow-subtle: 0 10px 30px -10px rgba(64, 85, 77, 0.08);
  --shadow-card: 0 14px 40px -12px rgba(64, 85, 77, 0.09);

  /* 字体规范 */
  --font-serif: Baskerville, "Songti SC", "SimSun", "STSong", "Noto Serif SC", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;

  /* 布局尺度 */
  --max-width: 1200px;
  --max-width-narrow: 860px;
  --toc-width: 170px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --radius-pill: 9999px;
  --transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-main);
  color: var(--color-text-main);
  font-family: var(--font-sans);
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--bg-main);
  background-image: 
    radial-gradient(ellipse at 15% 10%, rgba(206, 230, 221, 0.35) 0%, transparent 45%),
    radial-gradient(ellipse at 85% 65%, rgba(214, 234, 242, 0.4) 0%, transparent 50%),
    radial-gradient(circle at 50% 90%, rgba(239, 207, 217, 0.2) 0%, transparent 40%);
  background-attachment: fixed;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* 链接与排版 */
a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

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

h1, h2, h3, h4, .serif-title {
  font-family: var(--font-serif);
  font-weight: 500;
  color: var(--color-text-main);
  letter-spacing: 0.04em;
  line-height: 1.35;
}

p {
  margin-bottom: 1.25rem;
  color: var(--color-text-main);
}

/* 容器 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: calc(var(--toc-width) + 2.5rem); /* 为右侧悬浮窄目录留出呼吸空间 */
}

.container-narrow {
  max-width: var(--max-width-narrow);
  margin-left: auto;
  margin-right: auto;
  padding-left: 2rem;
  padding-right: calc(var(--toc-width) + 2.5rem);
}

/* 手机顶部导航栏 (手机专有) */
.mobile-header {
  display: none;
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(245, 250, 246, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 0.85rem 1.25rem;
  justify-content: space-between;
  align-items: center;
}

.mobile-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-text-main);
}

.mobile-brand-mark {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-water-green), var(--color-lotus-pink));
  display: inline-block;
  box-shadow: 0 2px 6px rgba(64, 85, 77, 0.15);
}

.mobile-menu-btn {
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.45rem 0.75rem;
  color: var(--color-text-main);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mobile-menu-btn span {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--color-text-main);
  transition: var(--transition);
}

.mobile-drawer {
  display: none;
  position: fixed;
  top: 54px;
  left: 0;
  right: 0;
  background: rgba(245, 250, 246, 0.98);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.25rem;
  z-index: 99;
  box-shadow: var(--shadow-card);
}

.mobile-drawer.active {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.mobile-nav-list a {
  display: block;
  font-size: 1rem;
  padding: 0.4rem 0.5rem;
  border-radius: var(--radius-sm);
  color: var(--color-text-main);
}

.mobile-nav-list a:hover {
  background: var(--color-water-green);
}

/* 桌面端右侧悬浮窄目录 (Floating Narrow TOC) */
.desktop-toc {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  right: 1.8rem;
  width: var(--toc-width);
  z-index: 90;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.2rem 1rem;
  box-shadow: var(--shadow-subtle);
  transition: opacity 0.3s ease;
}

.toc-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.9rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border-subtle);
}

.toc-brand-title {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-text-main);
}

.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.toc-link {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  padding: 0.25rem 0.3rem;
  border-radius: 4px;
  transition: var(--transition);
}

.toc-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--color-text-light);
  transition: var(--transition);
}

.toc-link:hover, .toc-link.active {
  color: var(--color-text-main);
  background: rgba(206, 230, 221, 0.4);
}

.toc-link.active .toc-dot {
  background: #2a6a57;
  transform: scale(1.4);
}

.toc-cta-mini {
  margin-top: 0.9rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
}

.toc-btn {
  display: block;
  text-align: center;
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.4rem 0.6rem;
  background: var(--color-water-green);
  color: var(--color-text-main);
  border-radius: var(--radius-pill);
  border: 1px solid rgba(64, 85, 77, 0.15);
}

.toc-btn:hover {
  background: #b5dccf;
}

/* 按钮与 CTA 样式 */
.btn-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.9rem 2.2rem;
  border-radius: var(--radius-pill);
  font-size: 1.05rem;
  font-weight: 500;
  background: linear-gradient(135deg, var(--color-water-green) 0%, #b8ded0 100%);
  color: var(--color-text-main);
  border: 1px solid rgba(64, 85, 77, 0.2);
  box-shadow: 0 4px 14px rgba(64, 85, 77, 0.08);
  cursor: pointer;
  transition: var(--transition);
}

.btn-cta:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #b8ded0 0%, var(--color-light-blue) 100%);
  box-shadow: 0 8px 24px rgba(64, 85, 77, 0.12);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  border-radius: var(--radius-pill);
  font-size: 0.98rem;
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border-subtle);
  color: var(--color-text-main);
  cursor: pointer;
  transition: var(--transition);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.95);
  border-color: rgba(64, 85, 77, 0.25);
}

/* 待更新徽标 */
.badge-pending {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-pill);
  background: var(--color-sand-beige);
  color: var(--color-text-main);
  border: 1px solid rgba(64, 85, 77, 0.15);
  font-weight: 500;
}

/* ==========================================================================
   首屏结构 (上下结构：上半部品牌标题+CTA，下半部整幅浅色池塘游戏)
   ========================================================================== */
.hero-section {
  padding-top: 4.5rem;
  padding-bottom: 3.5rem;
  position: relative;
}

.hero-upper {
  max-width: 820px;
  margin-bottom: 2.5rem;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 1.1rem;
}

.hero-eyebrow::before {
  content: "";
  display: inline-block;
  width: 24px;
  height: 1px;
  background-color: var(--color-text-muted);
}

.hero-title {
  font-size: clamp(2.4rem, 4.8vw, 3.6rem);
  line-height: 1.22;
  margin-bottom: 1.4rem;
  color: var(--color-text-main);
}

.hero-title span {
  display: inline-block;
  position: relative;
}

.hero-title span::after {
  content: "";
  position: absolute;
  bottom: 6px;
  left: 0;
  right: 0;
  height: 9px;
  background: rgba(206, 230, 221, 0.55);
  z-index: -1;
  border-radius: 4px;
}

.hero-subtitle {
  font-size: 1.15rem;
  line-height: 1.8;
  color: var(--color-text-muted);
  max-width: 680px;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.hero-meta-note {
  font-size: 0.85rem;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* 首屏下半部：整幅浅色池塘游戏容器 */
.hero-lower {
  width: 100%;
  margin-top: 1rem;
}

.pond-game-wrapper {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.pond-header-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-subtle);
}

.pond-title-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.pond-tag {
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-pill);
  background: var(--color-water-green);
  color: var(--color-text-main);
  font-weight: 500;
}

.pond-name {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
}

.pond-stats-bar {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  font-size: 0.9rem;
}

.stat-pill {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(245, 250, 246, 0.9);
  padding: 0.3rem 0.8rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-subtle);
}

.stat-val {
  font-weight: 700;
  color: #276251;
}

/* Canvas 舞台 */
.pond-canvas-container {
  width: 100%;
  height: 380px;
  position: relative;
  background-color: #F5FAF6;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(206, 230, 221, 0.8);
}

#pondCanvas {
  display: block;
  width: 100%;
  height: 100%;
}

/* 浮动状态气泡与警报 */
.pond-overlay-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  pointer-events: none;
  z-index: 20;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.bite-alert-box {
  display: none;
  background: rgba(255, 255, 255, 0.95);
  border: 2px solid #e06c75;
  border-radius: var(--radius-md);
  padding: 1rem 1.6rem;
  box-shadow: 0 10px 30px rgba(224, 108, 117, 0.25);
  animation: pulse-bite 0.6s infinite alternate;
}

.bite-alert-box.active {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
}

.bite-icon {
  font-size: 2.2rem;
}

.bite-text {
  font-size: 1.4rem;
  font-weight: 800;
  color: #d13d4b;
  letter-spacing: 0.05em;
}

.bite-sub {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

@keyframes pulse-bite {
  0% { transform: scale(0.96); }
  100% { transform: scale(1.04); }
}

/* 拉力博弈 HUD */
.tension-hud {
  position: absolute;
  bottom: 18px;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 480px;
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(8px);
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-card);
  z-index: 25;
  display: none;
}

.tension-hud.active {
  display: block;
}

.tension-bar-wrapper {
  margin-top: 0.5rem;
  margin-bottom: 0.75rem;
}

.tension-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  margin-bottom: 0.25rem;
  color: var(--color-text-muted);
}

.tension-track {
  position: relative;
  height: 16px;
  background: #E2EDE7;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border-subtle);
}

/* 安全区域高亮 */
.safe-zone {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 40%;
  width: 35%; /* 40% ~ 75% */
  background: rgba(144, 212, 178, 0.5);
  border-left: 2px dashed #428e6c;
  border-right: 2px dashed #428e6c;
}

.tension-fill {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 50%;
  background: linear-gradient(90deg, #64a689, #e6a760, #d9534f);
  transition: width 0.08s linear;
}

.tension-pointer {
  position: absolute;
  top: -3px;
  bottom: -3px;
  width: 4px;
  background: #274b3d;
  box-shadow: 0 0 6px rgba(0,0,0,0.4);
  transform: translateX(-50%);
  transition: left 0.06s linear;
}

.catch-progress-wrapper {
  margin-top: 0.5rem;
}

.catch-progress-track {
  height: 8px;
  background: #EAEAEA;
  border-radius: 4px;
  overflow: hidden;
}

.catch-progress-fill {
  height: 100%;
  width: 0%;
  background: #399175;
  transition: width 0.1s linear;
}

/* 控制底栏 (移动端大按钮 + 控制器) */
.pond-controls-bar {
  margin-top: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.pond-main-action {
  flex: 1;
  min-width: 200px;
}

/* 移动端与桌面通用的超大可触控操作按钮 */
.btn-game-master {
  width: 100%;
  min-height: 54px;
  font-size: 1.15rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  border: 2px solid #2d6b56;
  background: linear-gradient(180deg, #CEE6DD 0%, #b4ded0 100%);
  color: #244b3c;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  box-shadow: 0 4px 12px rgba(45, 107, 86, 0.18);
  user-select: none;
  -webkit-user-select: none;
  touch-action: manipulation;
  transition: transform 0.1s, background 0.15s;
}

.btn-game-master:active, .btn-game-master.pressing {
  transform: scale(0.97);
  background: linear-gradient(180deg, #b0dacb 0%, #9bcbb9 100%);
}

.btn-game-master.state-bite {
  background: linear-gradient(180deg, #ffccd2 0%, #f79aa6 100%);
  border-color: #d13d4b;
  color: #8c1924;
  animation: pulse-btn 0.5s infinite alternate;
}

@keyframes pulse-btn {
  0% { transform: scale(0.98); }
  100% { transform: scale(1.02); }
}

.pond-aux-actions {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.btn-aux {
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.85);
  border: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--color-text-main);
  cursor: pointer;
  transition: var(--transition);
}

.btn-aux:hover {
  background: #ffffff;
  border-color: rgba(64, 85, 77, 0.3);
}

.pond-log-box {
  width: 100%;
  font-size: 0.86rem;
  color: var(--color-text-muted);
  background: rgba(245, 250, 246, 0.8);
  border-radius: var(--radius-sm);
  padding: 0.6rem 0.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* 结算弹窗 */
.pond-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(64, 85, 77, 0.35);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 40;
  padding: 1rem;
}

.pond-modal-overlay.active {
  display: flex;
}

.pond-modal-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 440px;
  width: 100%;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 20px 50px rgba(0,0,0,0.15);
  text-align: center;
}

.modal-icon {
  font-size: 3rem;
  margin-bottom: 0.6rem;
}

.modal-title {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  margin-bottom: 0.6rem;
}

.modal-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 1.4rem;
  line-height: 1.6;
}

.catch-history-list {
  text-align: left;
  background: var(--bg-main);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  margin-bottom: 1.4rem;
  max-height: 140px;
  overflow-y: auto;
}

/* ==========================================================================
   通用小节标题
   ========================================================================== */
.section-wrapper {
  padding-top: 5rem;
  padding-bottom: 5rem;
  position: relative;
}

.section-head {
  text-align: center;
  max-width: 660px;
  margin: 0 auto 3.5rem auto;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: 0.6rem;
}

.section-title {
  font-size: clamp(1.8rem, 3.2vw, 2.5rem);
  margin-bottom: 0.9rem;
  color: var(--color-text-main);
}

.section-intro {
  font-size: 1rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ==========================================================================
   优势篇章：三段留白充足的图文短章
   ========================================================================== */
.advantages-stream {
  display: flex;
  flex-direction: column;
  gap: 4.5rem;
}

.advantage-chapter {
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 3.5rem;
  padding: 2.5rem;
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-subtle);
  transition: var(--transition);
}

.advantage-chapter:hover {
  background: var(--card-hover);
  box-shadow: var(--shadow-card);
}

.advantage-chapter.reversed {
  direction: rtl;
}

.advantage-chapter.reversed > * {
  direction: ltr;
}

.adv-visual {
  width: 100%;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, rgba(206, 230, 221, 0.4), rgba(214, 234, 242, 0.4));
  border: 1px solid var(--border-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.adv-visual-svg {
  width: 75%;
  height: 75%;
}

.adv-content {
  padding: 1rem 0;
}

.adv-num {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  color: var(--color-text-light);
  letter-spacing: 0.15em;
  margin-bottom: 0.5rem;
  display: block;
}

.adv-heading {
  font-size: 1.75rem;
  margin-bottom: 1.1rem;
  color: var(--color-text-main);
}

.adv-text {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--color-text-muted);
  margin-bottom: 1.4rem;
}

.adv-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.adv-tag {
  font-size: 0.8rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-pill);
  background: rgba(206, 230, 221, 0.5);
  color: var(--color-text-main);
  border: 1px solid var(--border-subtle);
}

/* ==========================================================================
   节点区域：分组地区目录 (非科技 Dashboard)
   ========================================================================== */
.node-directory {
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-subtle);
}

.node-group {
  margin-bottom: 2.2rem;
  padding-bottom: 2.2rem;
  border-bottom: 1px solid var(--border-subtle);
}

.node-group:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.node-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
}

.node-group-title {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.node-group-meta {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.node-list-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1rem;
}

.node-item-card {
  padding: 1rem 1.2rem;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.node-item-card:hover {
  background: #ffffff;
  border-color: rgba(64, 85, 77, 0.3);
  transform: translateY(-2px);
}

.node-item-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
}

.node-city {
  font-weight: 600;
  font-size: 0.98rem;
}

.node-status-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #3fa578;
}

.node-item-specs {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   AI 与流媒体：两块错位的大图文版面
   ========================================================================== */
.staggered-panels {
  display: flex;
  flex-direction: column;
  gap: 3.5rem;
}

.stagger-panel {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 3rem;
  padding: 3rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-subtle);
  position: relative;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-subtle);
}

.stagger-panel.panel-alt {
  grid-template-columns: 0.85fr 1.15fr;
  margin-left: 2.5rem; /* 错位版面感 */
  background: rgba(245, 250, 246, 0.75);
}

.stagger-panel:not(.panel-alt) {
  margin-right: 2.5rem;
}

.stagger-content h3 {
  font-size: 1.85rem;
  margin-bottom: 1rem;
}

.stagger-desc {
  font-size: 1.02rem;
  line-height: 1.8;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.stagger-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 1.8rem;
}

.stagger-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.94rem;
  color: var(--color-text-main);
}

.stagger-list li svg {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  fill: #2d6b56;
  margin-top: 3px;
}

.stagger-graphic {
  border-radius: var(--radius-md);
  padding: 1.5rem;
  background: linear-gradient(135deg, rgba(206, 230, 221, 0.3) 0%, rgba(239, 207, 217, 0.25) 100%);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.graphic-item {
  background: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.graphic-title {
  font-weight: 600;
  font-size: 0.92rem;
}

.graphic-badge {
  font-size: 0.78rem;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-pill);
  background: var(--color-light-blue);
}

/* ==========================================================================
   五档套餐：横向细线比较表 (手机逐项折叠)
   ========================================================================== */
.plans-wrapper {
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-subtle);
  overflow-x: auto;
}

.plans-table {
  width: 100%;
  border-collapse: collapse;
  text-align: center;
}

.plans-table th, .plans-table td {
  padding: 1.25rem 0.9rem;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.94rem;
}

.plans-table th {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  background: rgba(206, 230, 221, 0.25);
  color: var(--color-text-main);
}

.plans-table th:first-child, .plans-table td:first-child {
  text-align: left;
  font-weight: 600;
  padding-left: 1.25rem;
}

.plans-table tr:last-child td {
  border-bottom: none;
}

.plans-table tr:hover td {
  background: rgba(255, 255, 255, 0.6);
}

.plan-highlight-col {
  background: rgba(206, 230, 221, 0.18);
  font-weight: 600;
}

.plan-cta-cell {
  padding-top: 1.5rem !important;
}

.plan-table-btn {
  display: inline-block;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-pill);
  font-size: 0.86rem;
  font-weight: 600;
  background: var(--color-water-green);
  border: 1px solid rgba(64, 85, 77, 0.2);
  transition: var(--transition);
}

.plan-table-btn:hover {
  background: #badfd2;
  transform: translateY(-1px);
}

/* 手机端折叠套餐组件 (Mobile Cards) */
.plans-mobile-accordion {
  display: none;
  flex-direction: column;
  gap: 1rem;
}

.plan-mobile-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.plan-mobile-header {
  padding: 1.1rem 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  background: rgba(245, 250, 246, 0.7);
}

.plan-mobile-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
}

.plan-mobile-toggle-icon {
  font-size: 1.1rem;
  transition: transform 0.25s ease;
}

.plan-mobile-card.open .plan-mobile-toggle-icon {
  transform: rotate(180deg);
}

.plan-mobile-body {
  display: none;
  padding: 1.25rem;
  border-top: 1px solid var(--border-subtle);
}

.plan-mobile-card.open .plan-mobile-body {
  display: block;
}

.plan-mobile-row {
  display: flex;
  justify-content: space-between;
  padding: 0.6rem 0;
  border-bottom: 1px dashed var(--border-subtle);
  font-size: 0.92rem;
}

.plan-mobile-row:last-child {
  border-bottom: none;
}

/* ==========================================================================
   九篇文章：一篇大封面加八篇文字摘要
   ========================================================================== */
.articles-layout {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 2.5rem;
  align-items: start;
}

/* 大封面主推文章 */
.featured-article-card {
  background: #ffffff;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.featured-article-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 18px 45px rgba(64, 85, 77, 0.12);
}

.featured-cover-visual {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, #CEE6DD 0%, #D6EAF2 50%, #EFCFD9 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.featured-cover-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  font-size: 0.8rem;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.9);
  font-weight: 600;
  color: var(--color-text-main);
}

.featured-body {
  padding: 2.2rem;
}

.article-meta {
  display: flex;
  gap: 0.8rem;
  font-size: 0.84rem;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}

.featured-title {
  font-size: 1.65rem;
  margin-bottom: 1rem;
  line-height: 1.4;
}

.featured-excerpt {
  font-size: 0.96rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.read-more-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.95rem;
  color: #276251;
}

.read-more-link:hover {
  gap: 0.7rem;
}

/* 八篇文字摘要列表 */
.articles-summary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.1rem;
}

.summary-article-card {
  background: var(--card-bg);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.4rem;
  transition: var(--transition);
}

.summary-article-card:hover {
  background: #ffffff;
  border-color: rgba(64, 85, 77, 0.3);
  transform: translateX(4px);
}

.summary-card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.4rem;
}

.summary-tag {
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-pill);
  background: rgba(206, 230, 221, 0.45);
  color: var(--color-text-muted);
}

.summary-title {
  font-size: 1.08rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  line-height: 1.45;
}

.summary-title a:hover {
  color: #276251;
}

.summary-snippet {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ==========================================================================
   评价与引用 (简短引用)
   ========================================================================== */
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.8rem;
}

.review-card {
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
  box-shadow: var(--shadow-subtle);
  transition: var(--transition);
}

.review-card:hover {
  background: #ffffff;
  transform: translateY(-2px);
}

.review-quote-mark {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  line-height: 1;
  color: rgba(206, 230, 221, 0.9);
  margin-bottom: 0.5rem;
}

.review-quote-text {
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--color-text-main);
  margin-bottom: 1.25rem;
  font-style: italic;
}

.review-author-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.author-avatar-placeholder {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-sand-beige);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--color-text-main);
}

.author-info h4 {
  font-size: 0.92rem;
  margin-bottom: 0.1rem;
}

.author-info span {
  font-size: 0.78rem;
  color: var(--color-text-light);
}

/* ==========================================================================
   FAQ：分为使用、套餐、排障三组
   ========================================================================== */
.faq-groups-wrapper {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.faq-group-box {
  background: var(--card-bg);
  backdrop-filter: blur(8px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 2.2rem;
  box-shadow: var(--shadow-subtle);
}

.faq-group-title {
  font-size: 1.35rem;
  margin-bottom: 1.4rem;
  padding-bottom: 0.6rem;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.faq-accordion-list {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.faq-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.65);
  overflow: hidden;
  transition: var(--transition);
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 1.1rem 1.4rem;
  background: transparent;
  border: none;
  font-family: inherit;
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--color-text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-toggle-icon {
  font-size: 1.2rem;
  transition: transform 0.25s ease;
  color: var(--color-text-light);
}

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

.faq-answer {
  display: none;
  padding: 0 1.4rem 1.25rem 1.4rem;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.faq-item.active .faq-answer {
  display: block;
}

/* ==========================================================================
   文章详情页专有样式 (Article Pages)
   ========================================================================== */
.article-header {
  padding-top: 5rem;
  padding-bottom: 2.5rem;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
}

.article-page-title {
  font-size: clamp(2rem, 3.8vw, 2.9rem);
  line-height: 1.25;
  margin-bottom: 1.25rem;
}

.article-page-meta {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.88rem;
  color: var(--color-text-muted);
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  margin-bottom: 2.5rem;
}

.article-content {
  font-size: 1.05rem;
  line-height: 1.95;
  color: var(--color-text-main);
}

.article-content h2 {
  font-size: 1.7rem;
  margin-top: 2.8rem;
  margin-bottom: 1.2rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border-subtle);
}

.article-content h3 {
  font-size: 1.35rem;
  margin-top: 2rem;
  margin-bottom: 0.9rem;
}

.article-content p {
  margin-bottom: 1.5rem;
}

.article-content ul, .article-content ol {
  margin-bottom: 1.6rem;
  padding-left: 1.8rem;
}

.article-content li {
  margin-bottom: 0.5rem;
}

.article-content blockquote {
  border-left: 3px solid var(--color-water-green);
  background: rgba(206, 230, 221, 0.2);
  padding: 1rem 1.4rem;
  margin: 1.8rem 0;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  color: var(--color-text-muted);
}

.article-callout {
  background: rgba(238, 226, 201, 0.35);
  border: 1px solid rgba(238, 226, 201, 0.8);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin: 2rem 0;
}

.article-callout h4 {
  font-size: 1.05rem;
  margin-bottom: 0.4rem;
  color: #55442e;
}

.related-articles-section {
  margin-top: 4.5rem;
  padding-top: 3rem;
  border-top: 1px solid var(--border-subtle);
}

.related-articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

/* ==========================================================================
   页脚 (Footer)
   ========================================================================== */
.site-footer {
  margin-top: 6rem;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border-subtle);
  padding-top: 4.5rem;
  padding-bottom: 3.5rem;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand h3 {
  font-size: 1.4rem;
  margin-bottom: 0.8rem;
}

.footer-brand p {
  font-size: 0.92rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  max-width: 320px;
}

.footer-col h4 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  margin-bottom: 1.2rem;
  font-weight: 600;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

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

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-text-light);
}

.footer-legal-links {
  display: flex;
  gap: 1.5rem;
}

/* ==========================================================================
   减少动画与无障碍 (Reduced Motion)
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* ==========================================================================
   响应式调整 (Responsive Breakpoints)
   ========================================================================== */
@media (max-width: 1024px) {
  .desktop-toc {
    display: none; /* 移动与中等屏幕隐藏右侧悬浮，切换为顶部菜单 */
  }

  .container, .container-narrow {
    padding-right: 2rem;
  }

  .mobile-header {
    display: flex;
  }

  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }

  .advantage-chapter {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .stagger-panel, .stagger-panel.panel-alt {
    grid-template-columns: 1fr;
    margin-left: 0;
    margin-right: 0;
    padding: 2rem;
  }

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

@media (max-width: 768px) {
  .container, .container-narrow {
    padding-left: 1.25rem;
    padding-right: 1.25rem;
  }

  .hero-section {
    padding-top: 2.5rem;
    padding-bottom: 2rem;
  }

  .pond-canvas-container {
    height: 300px;
  }

  .plans-wrapper {
    display: none; /* 移动端折叠表格展示为卡片 */
  }

  .plans-mobile-accordion {
    display: flex;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}