/* ==========================================================================
   锦云机场 - 第2套专属样式表：悬签陈列系统 (Suspended Tag Display System)
   核心气质：高级、克制、安静、精品陈列、现代品牌、编辑感、大量留白、细线、错位、文字优先
   ========================================================================== */

:root {
  /* 主色板配置 (80% 暖白/白, 15% 深青灰/森林灰绿/主字, 5% 铜棕/陶土) */
  --bg-main: #F8F7F3;          /* 暖白主背景 */
  --bg-white: #FFFFFF;         /* 纯白 */
  --bg-secondary: #F0EEE8;     /* 第二背景 / 浅石色 */
  --bg-light-green: #EEF1EE;   /* 浅绿 (主力方案与重要陈列) */
  --bg-light-cyan: #EDF1F1;    /* 浅青灰 */
  --bg-light-warm: #F5EDE5;    /* 浅暖 */

  --text-main: #202426;        /* 主文字 */
  --text-body: #5D6466;        /* 正文字 */
  --text-muted: #898F91;       /* 次级说明字 */
  
  --accent-cyan: #435C64;      /* 深青灰 */
  --accent-cyan-dark: #34494F; /* 深青灰2 */
  --accent-forest: #596A61;    /* 森林灰绿 */
  --accent-forest-dark: #47564E;/* 深森林 */
  --accent-copper: #A77856;    /* 铜棕 */
  --accent-terracotta: #B46D4D;/* 陶土 */

  --border-line: #DFDDD5;      /* 基础1px细线 */
  --border-subtle: #ECEAE4;    /* 极浅细线 */

  /* 字体系统 */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* 基础留白与容器 */
  --container-max: 1220px;
  --container-article: 800px;
  --radius-xs: 2px;
  --radius-sm: 4px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  background-color: var(--bg-main);
  color: var(--text-main);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-family);
  font-size: 1.0625rem; /* 17px */
  line-height: 1.88;
  color: var(--text-body);
  background-color: var(--bg-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* 标题基础样式 */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.015em;
}

h1 {
  font-size: clamp(2.2rem, 4vw, 3.25rem); /* 35px - 52px */
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.65rem, 2.8vw, 2.125rem); /* 26px - 34px */
  margin-bottom: 1.25rem;
}

h3 {
  font-size: 1.375rem; /* 22px */
  font-weight: 500;
}

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

a {
  color: var(--text-main);
  text-decoration: none;
  transition: color 0.15s ease, border-color 0.15s ease;
}

a:hover {
  color: var(--accent-copper);
}

ul, ol {
  list-style: none;
}

table {
  border-collapse: collapse;
  width: 100%;
}

/* 页面通用容器 */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1.25rem, 3.5vw, 2.5rem);
  padding-right: clamp(1.25rem, 3.5vw, 2.5rem);
}

.container-narrow {
  max-width: var(--container-article);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

/* ==========================================================================
   Header (顶部导航)
   高度: 68px, 背景: #F8F7F3, 底边: 1px #DFDDD5
   ========================================================================== */
.site-header {
  height: 70px;
  background-color: var(--bg-main);
  border-bottom: 1px solid var(--border-line);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
}

.site-logo-svg {
  display: block;
  width: 26px;
  height: 26px;
}

.brand-info {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.brand-name {
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.brand-sub {
  font-size: 0.8125rem;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-link {
  font-size: 0.9375rem;
  color: var(--text-body);
  position: relative;
  padding: 8px 2px;
  transition: color 0.15s ease;
}

.nav-link:hover {
  color: var(--text-main);
}

.nav-link.active {
  color: var(--text-main);
  font-weight: 500;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 1.5px;
  background-color: var(--accent-copper);
}

.header-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--bg-white);
  background-color: var(--accent-cyan);
  padding: 8px 18px;
  border-radius: var(--radius-xs);
  transition: background-color 0.15s ease;
}

.header-cta-btn:hover {
  background-color: var(--accent-cyan-dark);
  color: var(--bg-white);
}

/* 移动端菜单按钮与抽屉 */
.menu-toggle-btn {
  display: none;
  background: none;
  border: 1px solid var(--border-line);
  padding: 6px 12px;
  font-size: 0.875rem;
  color: var(--text-main);
  cursor: pointer;
  border-radius: var(--radius-xs);
  font-family: inherit;
}

.mobile-nav-drawer {
  display: none;
  background-color: var(--bg-main);
  border-bottom: 1px solid var(--border-line);
  padding: 1rem 1.25rem 1.5rem;
}

.mobile-nav-drawer.open {
  display: block;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-nav-link {
  font-size: 1rem;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-subtle);
  display: block;
  color: var(--text-main);
}

.mobile-cta-wrapper {
  margin-top: 1rem;
}

/* ==========================================================================
   Hero 悬签中心陈列区 (Desktop 680px–780px)
   中心品牌陈列 + 5个错位独立信息签 + 大面积留白
   ========================================================================== */
.hero-showcase-section {
  position: relative;
  min-height: 760px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2.5rem 0 3.5rem;
  overflow: hidden;
  border-bottom: 1px solid var(--border-line);
}

.hero-layout-stage {
  position: relative;
  width: 100%;
  max-width: var(--container-max);
  min-height: 680px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 中心品牌陈列面 (480px–650px) */
.hero-center-pedestal {
  width: 100%;
  max-width: 580px;
  text-align: center;
  z-index: 10;
  padding: 1.5rem 1.5rem 1rem;
  background: transparent;
}

.hero-season-tag {
  display: inline-block;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  color: var(--accent-forest);
  margin-bottom: 1rem;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--accent-forest);
}

.hero-brand-display {
  font-size: clamp(3rem, 5.5vw, 4.25rem); /* 48px - 68px */
  font-weight: 500;
  color: var(--text-main);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 0.75rem;
}

.hero-h1-statement {
  font-size: 1.1875rem; /* 19px */
  font-weight: 500;
  color: var(--accent-cyan-dark);
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.hero-concept-phrase {
  font-size: 1.375rem;
  font-weight: 400;
  color: var(--text-main);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.hero-intro-text {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-body);
  max-width: 500px;
  margin: 0 auto 2rem;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  background-color: var(--accent-cyan);
  color: var(--bg-white);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-xs);
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.btn-primary:hover {
  background-color: var(--accent-cyan-dark);
  color: var(--bg-white);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  color: var(--text-main);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-xs);
  transition: border-color 0.15s ease, background-color 0.15s ease;
}

.btn-secondary:hover {
  border-color: var(--accent-copper);
  background-color: var(--bg-white);
  color: var(--accent-copper);
}

.btn-text-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.9375rem;
  color: var(--accent-forest);
  padding: 10px 8px;
  border-bottom: 1px solid transparent;
}

.btn-text-link:hover {
  color: var(--text-main);
  border-bottom-color: var(--text-main);
}

/* 5个错位独立信息签 (桌面绝对定位错位陈列) */
.suspended-tag {
  position: absolute;
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-xs);
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: transform 0.2s ease, border-color 0.2s ease;
  z-index: 5;
}

.suspended-tag:hover {
  border-color: var(--accent-copper);
  transform: translateY(-2px);
}

.tag-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 6px;
  gap: 12px;
}

.tag-index {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-copper);
  font-weight: 600;
  letter-spacing: 0.05em;
}

.tag-title {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-main);
}

.tag-subinfo {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.4;
  margin-bottom: 8px;
  white-space: nowrap;
}

.tag-action-link {
  font-size: 0.8125rem;
  color: var(--accent-cyan);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.tag-action-link:hover {
  color: var(--accent-copper);
}

/* 各悬签精确错位位置与尺寸 (桌面端) */
/* 01 套餐价格 (中心左侧偏上) */
.tag-pos-01 {
  top: 34%;
  left: 2%;
  width: 240px;
  min-height: 96px;
  border-left: 2px solid var(--accent-copper);
}

/* 02 节点地区 (中心右上) */
.tag-pos-02 {
  top: 6%;
  right: 5%;
  width: 260px;
  min-height: 94px;
  border-top: 2px solid var(--accent-forest);
}

/* 03 线路知识 (偏右中部) */
.tag-pos-03 {
  top: 38%;
  right: 2%;
  width: 250px;
  min-height: 94px;
  border-right: 2px solid var(--accent-cyan);
}

/* 04 AI与流媒体 (中心左下，避开中心按钮) */
.tag-pos-04 {
  bottom: 2%;
  left: 8%;
  width: 270px;
  min-height: 94px;
  border-bottom: 2px solid var(--accent-copper);
}

/* 05 客户端 (右下) */
.tag-pos-05 {
  bottom: 3%;
  right: 5%;
  width: 260px;
  min-height: 94px;
  border-bottom: 2px solid var(--accent-forest);
}

/* ==========================================================================
   通用Section标题头 (陈列式序号 + 错位留白)
   ========================================================================== */
.section-showcase {
  padding: 5rem 0;
  border-bottom: 1px solid var(--border-line);
  scroll-margin-top: 80px;
}

.section-head-plate {
  margin-bottom: 3rem;
  position: relative;
}

.section-serial {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent-copper);
  letter-spacing: 0.08em;
  display: inline-block;
  margin-bottom: 0.5rem;
}

.section-h2-title {
  font-size: clamp(1.6rem, 2.8vw, 2.125rem);
  font-weight: 500;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-lead-p {
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-body);
  max-width: 760px;
}

/* ==========================================================================
   01 / 套餐陈列 (5条错位简洁方案签，轻量靠左、日常向右、主力回中、高频再右、长期回左)
   ========================================================================== */
.plans-offset-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
  max-width: 1040px;
  margin: 0 auto;
}

.plan-stagger-tag {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-xs);
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.plan-stagger-tag:hover {
  border-color: var(--accent-copper);
}

/* 错位偏移规则 */
.plan-offset-01 {
  align-self: flex-start;
  width: 75%;
}

.plan-offset-02 {
  align-self: flex-end;
  width: 78%;
}

.plan-offset-03 {
  align-self: center;
  width: 92%;
  background-color: var(--bg-light-green); /* 主力方案浅绿背景 */
  border-color: var(--accent-forest);
  border-left: 3px solid var(--accent-forest);
}

.plan-offset-04 {
  align-self: flex-end;
  width: 82%;
}

.plan-offset-05 {
  align-self: flex-start;
  width: 74%;
}

.plan-tag-left {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.plan-badge-lead {
  font-size: 0.75rem;
  padding: 2px 8px;
  background-color: var(--accent-copper);
  color: var(--bg-white);
  border-radius: var(--radius-xs);
  font-weight: 500;
  white-space: nowrap;
}

.plan-name-title {
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.25rem;
}

.plan-traffic-pill {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--accent-cyan-dark);
  font-weight: 500;
}

.plan-suit-text {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.plan-tag-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.plan-price-num {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.plan-cta-anchor {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent-cyan);
  padding: 6px 14px;
  border: 1px solid var(--border-line);
  background-color: var(--bg-white);
  border-radius: var(--radius-xs);
  white-space: nowrap;
}

.plan-cta-anchor:hover {
  background-color: var(--accent-cyan);
  color: var(--bg-white);
  border-color: var(--accent-cyan);
}

/* ==========================================================================
   02 / 节点陈列 (香港: 左, 日本: 右, 新加坡: 左偏中, 美国: 右下)
   ========================================================================== */
.nodes-stagger-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  row-gap: 2.5rem;
  column-gap: 3rem;
  position: relative;
}

.node-region-plate {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  padding: 2rem;
  border-radius: var(--radius-xs);
}

.node-plate-hk {
  grid-column: 1 / 2;
  width: 90%;
  justify-self: start;
}

.node-plate-jp {
  grid-column: 2 / 3;
  width: 92%;
  justify-self: end;
  margin-top: 1.5rem;
}

.node-plate-sg {
  grid-column: 1 / 2;
  width: 94%;
  justify-self: center;
}

.node-plate-us {
  grid-column: 2 / 3;
  width: 88%;
  justify-self: end;
  margin-top: 1rem;
}

.node-title-group {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.node-name {
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--text-main);
}

.node-p-answer {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-body);
  margin-bottom: 1.25rem;
}

.node-focus-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 1.25rem;
}

.node-focus-item {
  font-size: 0.8125rem;
  padding: 3px 10px;
  background-color: var(--bg-main);
  border: 1px solid var(--border-line);
  color: var(--accent-forest-dark);
  border-radius: var(--radius-xs);
}

.node-hairline-accent {
  height: 1px;
  background-color: var(--border-line);
  margin-bottom: 1rem;
}

.line-hk { width: 45%; background-color: var(--accent-copper); }
.line-jp { width: 65%; background-color: var(--accent-forest); }
.line-sg { width: 55%; background-color: var(--accent-cyan); }
.line-us { width: 75%; background-color: var(--accent-terracotta); }

.node-foot-link {
  font-size: 0.875rem;
  color: var(--accent-cyan);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   03 / 线路陈列 (4条错位长标题 + HTML横线细线表格 + 5个扩展问题)
   ========================================================================== */
.lines-stagger-titles {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 3.5rem;
}

.line-title-strip {
  padding: 1rem 1.5rem;
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-xs);
}

.line-strip-01 { width: 72%; align-self: flex-start; }
.line-strip-02 { width: 76%; align-self: flex-end; }
.line-strip-03 { width: 84%; align-self: flex-start; }
.line-strip-04 { width: 70%; align-self: flex-end; }

.line-strip-header {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 6px;
}

.line-strip-name {
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--text-main);
}

.line-strip-summary {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* 规范HTML表格 (横向细线，无四周粗框) */
.lines-table-container {
  overflow-x: auto;
  margin-bottom: 3.5rem;
  background-color: var(--bg-white);
  border-top: 1px solid var(--text-main);
  border-bottom: 1px solid var(--border-line);
}

.lines-html-table th,
.lines-html-table td {
  padding: 1.125rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--border-line);
  font-size: 0.9375rem;
}

.lines-html-table th {
  font-weight: 600;
  color: var(--text-main);
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-line);
}

.lines-html-table td strong {
  color: var(--text-main);
  font-weight: 600;
}

/* 线路5大扩展问答 */
.lines-faq-stagger {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.lines-q-box {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  padding: 1.5rem;
  border-radius: var(--radius-xs);
}

.lines-q-box h4 {
  font-size: 1.0625rem;
  color: var(--text-main);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.lines-q-box p {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-body);
  margin-bottom: 0;
}

/* ==========================================================================
   04 / AI工具 (6个文字签，错位排版，无Logo墙)
   ========================================================================== */
.ai-text-showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
}

.ai-text-tag {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  padding: 1.75rem;
  border-radius: var(--radius-xs);
}

.ai-tag-chatgpt { width: 95%; justify-self: start; }
.ai-tag-claude { width: 95%; justify-self: end; }
.ai-tag-gemini { width: 90%; justify-self: start; }
.ai-tag-studio { width: 92%; justify-self: end; }
.ai-tag-narrow-row {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
}

.ai-name-title {
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.ai-factors-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 1rem;
}

.ai-factor-chip {
  font-size: 0.75rem;
  padding: 2px 8px;
  background-color: var(--bg-main);
  border: 1px solid var(--border-line);
  color: var(--accent-cyan);
}

.ai-desc-text {
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--text-body);
  margin-bottom: 1rem;
}

/* ==========================================================================
   05 / 流媒体 (YouTube最大, Netflix第二大, Disney+中等, Spotify/Twitch两条窄签)
   ========================================================================== */
.streaming-text-hierarchy {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.stream-plate-youtube {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  border-left: 3px solid var(--accent-terracotta);
  padding: 2.25rem;
  width: 96%;
}

.stream-plate-netflix {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  border-left: 3px solid var(--accent-copper);
  padding: 1.75rem;
  width: 90%;
  align-self: flex-end;
}

.stream-plate-disney {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  border-left: 3px solid var(--accent-cyan);
  padding: 1.5rem;
  width: 85%;
  align-self: flex-start;
}

.stream-narrow-duo {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.stream-plate-narrow {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  padding: 1.25rem 1.5rem;
}

.stream-header-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.5rem;
}

.stream-title-large {
  font-size: 1.625rem;
  font-weight: 600;
  color: var(--text-main);
}

.stream-title-medium {
  font-size: 1.375rem;
  font-weight: 600;
  color: var(--text-main);
}

.stream-title-small {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-main);
}

/* ==========================================================================
   06 / 客户端 (Windows左上, macOS右上, Android左下中, iPhone右下, 中间常见操作条)
   ========================================================================== */
.clients-layout-canvas {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.client-dev-tag {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  padding: 2rem;
  border-radius: var(--radius-xs);
}

.client-tag-win { width: 94%; justify-self: start; }
.client-tag-mac { width: 94%; justify-self: end; }
.client-tag-and { width: 90%; justify-self: start; margin-top: 1rem; }
.client-tag-ios { width: 90%; justify-self: end; margin-top: 1rem; }

.client-center-strip {
  grid-column: 1 / -1;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-line);
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 0.5rem 0;
}

.client-strip-title {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-main);
}

.client-strip-items {
  display: flex;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--accent-forest-dark);
}

.client-strip-items span::before {
  content: "· ";
  color: var(--accent-copper);
}

/* ==========================================================================
   07 / 完整价目悬签 (细竖主轴 + 左右交错悬挂 + 主力方案唯一突出)
   ========================================================================== */
.pricing-spine-stage {
  position: relative;
  max-width: 980px;
  margin: 3rem auto 0;
  padding: 2rem 0;
}

/* 页面中央极细竖向陈列轴 (绝对定位) */
.pricing-vertical-spine {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background-color: var(--border-line);
  transform: translateX(-50%);
  z-index: 1;
}

.spine-plan-item {
  position: relative;
  width: 48%;
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-xs);
  padding: 1.5rem 1.75rem;
  margin-bottom: 2.25rem;
  z-index: 2;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.spine-plan-item:hover {
  border-color: var(--accent-copper);
}

/* 左右交错悬挂规则 */
.spine-item-01 {
  margin-left: 0;
  width: 46%;
}

.spine-item-02 {
  margin-left: auto;
  width: 47%;
}

/* 03 主力方案 (跨度最长、浅绿底、左边2px森林绿、铜棕标签) */
.spine-item-03 {
  width: 58%;
  margin-left: -5%; /* 向中心稍越过 */
  background-color: var(--bg-light-green);
  border-left: 3px solid var(--accent-forest);
  border-color: var(--accent-forest);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.spine-item-04 {
  margin-left: auto;
  width: 48%;
}

.spine-item-05 {
  margin-left: 2%;
  width: 45%;
}

.spine-item-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.spine-plan-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-copper);
  font-weight: 600;
}

.spine-plan-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main);
}

.spine-price-row {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 0.75rem;
}

.spine-price-val {
  font-size: 2rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.spine-traffic-val {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  color: var(--accent-cyan-dark);
}

.spine-plan-meta {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.spine-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 8px 18px;
  background-color: var(--accent-cyan);
  color: var(--bg-white);
  border-radius: var(--radius-xs);
}

.spine-cta-btn:hover {
  background-color: var(--accent-cyan-dark);
  color: var(--bg-white);
}

.spine-cta-secondary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 7px 16px;
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  color: var(--text-main);
  border-radius: var(--radius-xs);
}

.spine-cta-secondary:hover {
  border-color: var(--accent-copper);
  color: var(--accent-copper);
}

/* ==========================================================================
   08 / 锦云机场深度评测入口
   ========================================================================== */
.review-highlight-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  border-left: 3px solid var(--accent-copper);
  padding: 2.5rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
}

.review-card-content {
  max-width: 780px;
}

.review-badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 8px;
  background-color: var(--bg-light-warm);
  color: var(--accent-terracotta);
  margin-bottom: 0.75rem;
  border-radius: var(--radius-xs);
  font-weight: 500;
}

.review-card-title {
  font-size: 1.625rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.review-quick-verdict {
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--text-body);
  margin-bottom: 1rem;
}

.review-card-meta {
  display: flex;
  gap: 1.5rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

/* ==========================================================================
   09 / 阅读陈列墙 (1篇核心 + 2篇中型 + 6条细长文章签)
   ========================================================================== */
.reading-wall-structure {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.reading-wall-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 2rem;
}

.wall-primary-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.wall-secondary-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.wall-third-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  padding: 1.75rem 2rem;
  margin-bottom: 0.5rem;
}

.wall-slender-strips {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.slender-article-tag {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  padding: 1.125rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: transform 0.15s ease, border-color 0.15s ease;
}

.slender-article-tag:hover {
  border-color: var(--accent-copper);
  transform: translateX(2px);
}

.slender-tag-cat {
  font-size: 0.75rem;
  color: var(--accent-forest);
  margin-bottom: 4px;
}

.slender-tag-title {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-main);
}

/* ==========================================================================
   10 / 网络排障 (5个错位问题现象签)
   ========================================================================== */
.troubleshoot-stagger-stack {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  max-width: 1000px;
  margin: 0 auto;
}

.trouble-issue-plate {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  padding: 1.5rem 2rem;
  border-radius: var(--radius-xs);
}

.issue-plate-01 { width: 85%; align-self: flex-start; }
.issue-plate-02 { width: 88%; align-self: flex-end; }
.issue-plate-03 { width: 82%; align-self: flex-start; }
.issue-plate-04 { width: 90%; align-self: flex-end; }
.issue-plate-05 { width: 84%; align-self: flex-start; }

.issue-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 0.5rem;
}

.issue-serial {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent-terracotta);
  font-weight: 600;
}

.issue-title {
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--text-main);
}

.issue-checklist-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0.75rem 0 0.5rem;
}

.issue-chip {
  font-size: 0.8125rem;
  padding: 2px 10px;
  background-color: var(--bg-main);
  border: 1px solid var(--border-line);
  color: var(--text-body);
}

/* ==========================================================================
   11 / 常见问题 FAQ (问题悬签，左右交错，原生details无卡片)
   ========================================================================== */
.faq-stagger-collection {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 1040px;
  margin: 0 auto;
}

.faq-item-tag {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-xs);
  transition: border-color 0.15s ease;
}

.faq-item-tag:hover {
  border-color: var(--accent-copper);
}

/* 桌面端左右轻度交错 */
.faq-tag-odd {
  width: 94%;
  align-self: flex-start;
}

.faq-tag-even {
  width: 94%;
  align-self: flex-end;
}

.faq-tag-center {
  width: 98%;
  align-self: center;
}

.faq-summary {
  padding: 1.25rem 1.75rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--text-main);
  user-select: none;
  list-style: none;
}

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

.faq-sum-left {
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.faq-q-num {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--accent-copper);
  font-weight: 600;
}

.faq-plus-icon {
  font-size: 1.25rem;
  color: var(--accent-forest);
  transition: transform 0.2s ease;
  line-height: 1;
}

.faq-item-tag[open] .faq-plus-icon {
  transform: rotate(45deg);
}

.faq-body-content {
  padding: 0 1.75rem 1.5rem 3.25rem;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--text-body);
  border-top: 1px solid var(--border-subtle);
  margin-top: 4px;
  padding-top: 1rem;
}

/* ==========================================================================
   Footer (陈列语言，浅石色背景 #F0EEE8，文字 #4B5456，顶部1px #DFDDD5)
   高度: 250px-320px 桌面端紧凑
   ========================================================================== */
.site-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-line);
  color: #4B5456;
  padding: 3.5rem 0 2rem;
  margin-top: auto;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr 1fr 1fr;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.footer-col-brand .brand-name {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.footer-col-brand .brand-slogan {
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.footer-col-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}

.footer-links-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links-list a {
  font-size: 0.8125rem;
  color: #4B5456;
  transition: color 0.15s ease;
}

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

.footer-bottom-bar {
  padding-top: 1.75rem;
  border-top: 1px solid var(--border-line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

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

.footer-friends-label {
  color: var(--text-main);
  font-weight: 500;
}

.footer-friends-group a {
  color: #4B5456;
}

.footer-friends-group a:hover {
  color: var(--accent-copper);
}

/* ==========================================================================
   文章详情页与分类页专属样式 (Article & Category)
   正文最大宽: 800px, 快速结论带铜棕细线, 本文目录轻量桌面侧栏
   ========================================================================== */
.article-page-wrap {
  padding: 3rem 0 5rem;
}

.article-breadcrumb-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 1.75rem;
}

.article-breadcrumb-nav a {
  color: var(--text-body);
}

.article-breadcrumb-nav a:hover {
  color: var(--accent-copper);
}

.article-header-showcase {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-line);
}

.article-category-badge {
  display: inline-block;
  font-size: 0.75rem;
  padding: 2px 8px;
  background-color: var(--bg-light-warm);
  color: var(--accent-copper);
  font-weight: 500;
  border-radius: var(--radius-xs);
  margin-bottom: 0.75rem;
}

.article-title-h1 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
  color: var(--text-main);
}

.article-meta-row {
  display: flex;
  align-items: center;
  gap: 18px;
  font-size: 0.8125rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.article-quick-verdict-plate {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  border-left: 3px solid var(--accent-copper);
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
  border-radius: var(--radius-xs);
}

.verdict-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-copper);
  margin-bottom: 0.5rem;
}

.article-layout-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: 3.5rem;
  align-items: start;
}

.article-body-prose {
  max-width: var(--container-article);
  background-color: var(--bg-white);
  padding: 2.5rem;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-xs);
}

.article-body-prose h2 {
  font-size: 1.625rem;
  margin-top: 2.75rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-main);
}

.article-body-prose h3 {
  font-size: 1.25rem;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--text-main);
}

.article-body-prose p {
  font-size: 1.0625rem;
  line-height: 1.9;
  color: var(--text-body);
  margin-bottom: 1.5rem;
}

.article-body-prose ul,
.article-body-prose ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.article-body-prose ul li {
  list-style-type: square;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-body);
  margin-bottom: 0.5rem;
}

.article-body-prose ol li {
  list-style-type: decimal;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-body);
  margin-bottom: 0.5rem;
}

.article-body-prose blockquote {
  border-left: 2px solid var(--accent-forest);
  padding: 0.75rem 1.25rem;
  background-color: var(--bg-main);
  margin: 1.5rem 0;
  font-size: 0.9375rem;
  color: var(--text-body);
}

.article-sidebar-toc {
  position: sticky;
  top: 90px;
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-xs);
  max-height: calc(100vh - 120px);
  overflow-y: auto;
}

.toc-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.toc-nav-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.toc-link {
  font-size: 0.8125rem;
  color: var(--text-body);
  line-height: 1.4;
  display: block;
}

.toc-link:hover {
  color: var(--accent-copper);
}

/* 分类页面顶部 */
.category-header-stage {
  padding: 3rem 0 2.5rem;
  border-bottom: 1px solid var(--border-line);
  margin-bottom: 3rem;
}

.category-header-flex {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  flex-wrap: wrap;
}

.category-h1 {
  font-size: 2.25rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.category-intro-p {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--text-body);
  max-width: 680px;
}

.category-side-tags {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cat-side-plate {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  padding: 10px 16px;
  border-radius: var(--radius-xs);
  font-size: 0.8125rem;
}

.cat-side-plate strong {
  color: var(--accent-copper);
}

/* 分类文章列表 */
.category-article-item {
  background-color: var(--bg-white);
  border: 1px solid var(--border-line);
  padding: 1.75rem 2rem;
  margin-bottom: 1.25rem;
  border-radius: var(--radius-xs);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color 0.15s ease;
}

.category-article-item:hover {
  border-color: var(--accent-copper);
}

/* ==========================================================================
   无障碍与动效控制 (prefers-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;
  }
}

/* ==========================================================================
   响应式断点与移动端适配 (375px, 390px, 430px, 768px, 1024px, 1440px)
   移动端取消大幅错位，单列纵向展开，无横向溢出
   ========================================================================== */
@media (max-width: 1024px) {
  .nav-desktop {
    display: none;
  }
  
  .menu-toggle-btn {
    display: block;
  }

  .hero-showcase-section {
    min-height: auto;
    padding: 3rem 0;
  }

  .hero-layout-stage {
    min-height: auto;
    flex-direction: column;
  }

  .suspended-tag {
    position: static;
    width: 100% !important;
    margin-bottom: 1rem;
  }

  .hero-center-pedestal {
    padding: 1.5rem 0 2rem;
  }

  .pricing-vertical-spine {
    display: none;
  }

  .spine-plan-item {
    width: 100% !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

  .nodes-stagger-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .node-region-plate {
    width: 100% !important;
    margin-top: 0 !important;
  }

  .lines-faq-stagger,
  .ai-text-showcase-grid,
  .ai-tag-narrow-row,
  .stream-narrow-duo,
  .clients-layout-canvas,
  .reading-wall-top,
  .wall-slender-strips {
    grid-template-columns: 1fr !important;
  }

  .line-title-strip,
  .stream-plate-youtube,
  .stream-plate-netflix,
  .stream-plate-disney,
  .client-dev-tag,
  .trouble-issue-plate {
    width: 100% !important;
    align-self: stretch !important;
    margin-top: 0 !important;
  }

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

  .article-sidebar-toc {
    display: none; /* 移动端在正文顶部放置折叠目录 */
  }

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

@media (max-width: 640px) {
  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .plan-stagger-tag {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.25rem 1.25rem;
  }

  .plan-offset-01,
  .plan-offset-02,
  .plan-offset-03,
  .plan-offset-04,
  .plan-offset-05 {
    width: 100% !important;
  }

  .plan-tag-left,
  .plan-tag-right {
    width: 100%;
    justify-content: space-between;
  }

  .review-highlight-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
  }

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

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

  .hero-cta-group a {
    width: 100%;
    justify-content: center;
  }
}