/* ==================================================
   锦云机场 - 经纬织带系统 核心样式表
   Jinyun Cloud - Warp & Weft Ribbon Design System
   ================================================== */

:root {
  /* 主色板配色 (严格遵循设计规范) */
  --bg-main: #FAFAF7;         /* 主背景: 暖白 75% */
  --bg-white: #FFFFFF;        /* 纯白 */
  --bg-sub: #F3F3EE;          /* 第二背景: 浅暖灰 */
  --bg-blue-grey: #EEF2F3;     /* 浅蓝灰 */
  --bg-green-grey: #EEF2EF;    /* 浅绿灰 (主力方案高亮背景) */
  --bg-sand: #F6EFE6;          /* 浅砂色 */

  --text-main: #1E2528;       /* 主文字: 深炭蓝灰 15% */
  --text-body: #5B6467;       /* 正文文字 */
  --text-muted: #879093;      /* 次级文字 */

  --indigo-grey: #4C6673;     /* 靛蓝灰 */
  --deep-indigo: #3B525D;     /* 深靛蓝 */
  --ink-green: #596E64;       /* 墨绿色 */
  --deep-green: #46584F;      /* 深墨绿 */

  --sand-gold: #AE855D;       /* 锦砂金 10% */
  --terracotta: #B76E4E;      /* 陶土色 */

  --border: #E1E1DA;          /* 细边框 */
  --border-subtle: #ECECE6;   /* 极细分隔线 */

  /* 阴影规范 (极克制) */
  --shadow-soft: 0 10px 26px rgba(30, 37, 40, 0.03);
  --shadow-hover: 0 12px 30px rgba(30, 37, 40, 0.06);

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

  /* 布局尺度 */
  --max-width: 1240px;
  --content-width: 800px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
}

/* 重置与基底 */
*, *::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(--bg-main);
  color: var(--text-body);
  font-size: 1.0625rem; /* 17px */
  line-height: 1.8;
  font-weight: 400;
  overflow-x: hidden;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

/* 排版层次 */
h1, h2, h3, h4, h5, h6 {
  color: var(--text-main);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.015em;
}

h1 {
  font-size: clamp(2.25rem, 4.5vw, 3.25rem); /* 36px ~ 52px */
  font-weight: 700;
  line-height: 1.25;
}

h2 {
  font-size: clamp(1.65rem, 2.5vw, 2.125rem); /* 26px ~ 34px */
  margin-bottom: 0.75rem;
}

h3 {
  font-size: clamp(1.25rem, 1.8vw, 1.5rem); /* 20px ~ 24px */
  margin-bottom: 0.5rem;
}

p {
  margin-bottom: 1.25rem;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

a:hover {
  color: var(--indigo-grey);
}

ul, ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
}

li {
  margin-bottom: 0.5rem;
}

img, svg {
  vertical-align: middle;
  max-width: 100%;
}

/* 经纬织带基础网格与容器 */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section-spacing {
  padding-top: 5.5rem;
  padding-bottom: 5.5rem;
  position: relative;
}

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

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--sand-gold);
  letter-spacing: 0.05em;
  margin-bottom: 0.625rem;
  text-transform: uppercase;
}

.section-tag::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 2px;
  background-color: var(--sand-gold);
}

.section-desc {
  max-width: 780px;
  font-size: 1.125rem;
  color: var(--text-body);
  line-height: 1.8;
  margin-top: 0.75rem;
}

/* 按钮与CTA体系 */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.625rem;
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
  line-height: 1.4;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--indigo-grey);
  color: #FFFFFF;
  border-color: var(--indigo-grey);
}

.btn-primary:hover {
  background-color: var(--deep-indigo);
  border-color: var(--deep-indigo);
  color: #FFFFFF;
  transform: translateY(-1px);
}

.btn-accent {
  background-color: var(--ink-green);
  color: #FFFFFF;
  border-color: var(--ink-green);
}

.btn-accent:hover {
  background-color: var(--deep-green);
  border-color: var(--deep-green);
  color: #FFFFFF;
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  background-color: var(--bg-sub);
  border-color: var(--indigo-grey);
  color: var(--indigo-grey);
}

.btn-text {
  padding: 0.25rem 0;
  color: var(--indigo-grey);
  font-weight: 600;
  background: none;
  border: none;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.btn-text:hover {
  color: var(--deep-indigo);
  gap: 0.625rem;
}

/* ==================================================
   Header 导航栏 (66px-72px, 白底, 1px边框, 经纬短线指示)
   ================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: 70px;
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
}

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

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 0.875rem;
  text-decoration: none;
}

.brand-logo-svg {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
}

.brand-text-group {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.01em;
  line-height: 1.2;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  margin-top: 2px;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-body);
  padding: 0.5rem 0.125rem;
  position: relative;
  transition: color 0.2s ease;
}

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

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--indigo-grey);
}

.header-action {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
}

/* 移动端菜单抽屉 */
.mobile-nav-panel {
  display: none;
  position: absolute;
  top: 70px;
  left: 0;
  right: 0;
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem;
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.04);
}

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

.mobile-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-nav-link {
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--text-main);
  display: block;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.mobile-nav-cta {
  margin-top: 1rem;
  width: 100%;
}

/* ==================================================
   Hero 经纬首屏 (横向套餐主带 × 3条纵向主题带交织)
   ================================================== */
.hero-section {
  position: relative;
  background-color: var(--bg-main);
  border-bottom: 1px solid var(--border);
  padding-top: 4.5rem;
  padding-bottom: 5.5rem;
  overflow: hidden;
}

.hero-header-area {
  max-width: 960px;
  margin-bottom: 3.5rem;
  position: relative;
  z-index: 2;
}

.hero-badge-strip {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  padding: 0.375rem 1rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--sand-gold);
  margin-bottom: 1.5rem;
}

.hero-badge-strip span {
  color: var(--text-main);
  font-weight: 600;
}

.hero-title {
  margin-bottom: 1.25rem;
  color: var(--text-main);
  line-height: 1.35;
}

.hero-lead-concept {
  font-size: 1.375rem;
  font-weight: 500;
  color: var(--deep-indigo);
  margin-bottom: 1rem;
  line-height: 1.5;
}

.hero-description {
  font-size: 1.125rem;
  line-height: 1.85;
  color: var(--text-body);
  max-width: 820px;
  margin-bottom: 2rem;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

/* 经纬织带交互空间 */
.hero-weave-stage {
  position: relative;
  margin-top: 3.5rem;
}

/* 横向信息带：套餐价格 (全宽贯通，绝对不遮挡文字) */
.hero-weft-strip {
  position: relative;
  z-index: 10;
  width: 100%;
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-left: 4px solid var(--ink-green);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2.25rem;
  box-shadow: var(--shadow-soft);
}

.weft-strip-meta {
  display: flex;
  flex-direction: column;
  min-width: 140px;
}

.weft-tag {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--sand-gold);
  margin-bottom: 4px;
}

.weft-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.weft-items-flow {
  display: flex;
  align-items: center;
  gap: 3rem;
  flex: 1;
  margin: 0 3rem;
}

.weft-tier-item {
  display: flex;
  flex-direction: column;
}

.tier-volume {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.2;
}

.tier-note {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.weft-tier-item.flagship-tier .tier-volume {
  color: var(--deep-green);
}

.weft-action {
  flex-shrink: 0;
}

/* 纵向主题带三列 (经纬轻微交错穿插) */
.hero-warp-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
  margin-top: -18px; /* 向上穿插切入横带下方 */
  position: relative;
  z-index: 15;
}

.hero-warp-column {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.75rem 1.75rem;
  box-shadow: var(--shadow-soft);
  transition: transform 0.25s ease, border-color 0.25s ease;
}

.hero-warp-column:hover {
  transform: translateY(-3px);
  border-color: var(--indigo-grey);
}

/* 经纬前后穿插层级微调：形成真实的一前一后交织 */
.warp-col-1 {
  border-top: 3px solid var(--indigo-grey);
  z-index: 5; /* 穿在横带后方 */
}

.warp-col-2 {
  border-top: 3px solid var(--sand-gold);
  z-index: 20; /* 穿在横带前方，形成交织视觉 */
  margin-top: -10px; /* 错位凸显 */
  box-shadow: 0 14px 30px rgba(30, 37, 40, 0.05);
}

.warp-col-3 {
  border-top: 3px solid var(--terracotta);
  z-index: 5; /* 穿在横带后方 */
}

.warp-column-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
}

.warp-idx {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
}

.warp-col-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-main);
}

.warp-items-list {
  list-style: none;
  padding: 0;
  margin: 0 0 1.25rem 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.warp-tag-item {
  background-color: var(--bg-sub);
  color: var(--text-main);
  font-size: 0.8125rem;
  font-weight: 500;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
}

.warp-column-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* ==================================================
   01 / 套餐经线 (横向价格带错位交织)
   ================================================== */
.pricing-weft-stack {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 2rem;
}

.weft-plan-ribbon {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
  position: relative;
}

.weft-plan-ribbon:hover {
  transform: translateX(4px);
  border-color: var(--indigo-grey);
}

/* 错位交织宽度与位置层次 */
.plan-ribbon-1 {
  width: 92%;
  margin-left: 0;
  background-color: var(--bg-white);
}

.plan-ribbon-2 {
  width: 96%;
  margin-left: 4%;
  background-color: var(--bg-blue-grey);
}

/* 主力方案：最长，专属背景，墨绿线，陶土标签 */
.plan-ribbon-3.plan-flagship {
  width: 100%;
  margin-left: 0;
  background-color: var(--bg-green-grey);
  border-left: 4px solid var(--ink-green);
  border-color: #CAD5CE;
  box-shadow: var(--shadow-soft);
}

.plan-ribbon-4 {
  width: 94%;
  margin-left: 2%;
  background-color: var(--bg-white);
}

.plan-ribbon-5 {
  width: 90%;
  margin-left: 6%;
  background-color: var(--bg-sand);
}

.plan-badge-flagship {
  position: absolute;
  top: -11px;
  left: 24px;
  background-color: var(--terracotta);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.125rem 0.625rem;
  border-radius: 999px;
  letter-spacing: 0.05em;
}

.plan-primary-info {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  min-width: 220px;
}

.plan-number {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--sand-gold);
}

.plan-title-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.plan-traffic-highlight {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--deep-green);
  white-space: nowrap;
}

.plan-pricing-digits {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  min-width: 130px;
}

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

.price-num {
  font-size: 2.125rem;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1;
}

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

.plan-usage-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  flex: 1;
}

.usage-pill {
  font-size: 0.8125rem;
  color: var(--text-body);
  background-color: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--border-subtle);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.plan-cta-action {
  flex-shrink: 0;
}

.plan-disclaimer-band {
  margin-top: 1.75rem;
  padding: 1rem 1.5rem;
  background-color: var(--bg-sub);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ==================================================
   02 / 节点纬线 (水平基线 + 竖向细线文字分区)
   ================================================== */
.latitude-framework {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2.5rem 2rem;
  position: relative;
}

.latitude-baseline-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 2rem;
  border-bottom: 2px solid var(--indigo-grey);
  margin-bottom: 2rem;
}

.latitude-anchor {
  display: flex;
  flex-direction: column;
  position: relative;
}

.latitude-point-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--sand-gold);
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.latitude-region-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
}

.latitude-quadrant-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.latitude-column {
  position: relative;
  padding-right: 1.5rem;
}

.latitude-column:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  width: 1px;
  background-color: var(--border);
}

.region-subhead {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--indigo-grey);
  margin-bottom: 0.75rem;
}

.region-body-desc {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-body);
}

/* ==================================================
   03 / 线路知识 (纵向主题带 × 横向说明 + 规范数据表格)
   ================================================== */
.lines-interweave-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  gap: 2.5rem;
  align-items: start;
}

.lines-vertical-theme-strip {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-left: 3px solid var(--sand-gold);
  border-radius: var(--radius-sm);
  padding: 2rem 1.75rem;
}

.lines-theme-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.75rem;
}

.lines-theme-desc {
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.75;
  margin-bottom: 1.5rem;
}

.lines-horizontal-stack {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.line-info-horizontal-strip {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem 1.75rem;
  transition: border-color 0.2s ease;
}

.line-info-horizontal-strip:hover {
  border-color: var(--indigo-grey);
}

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

.line-name {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--text-main);
}

.line-tag-sub {
  font-size: 0.8125rem;
  color: var(--indigo-grey);
  background-color: var(--bg-sub);
  padding: 0.125rem 0.5rem;
  border-radius: var(--radius-sm);
}

.line-content-body {
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.75;
}

/* 规范HTML表格 (横向细线，无Excel网格) */
.standard-data-table-wrap {
  margin-top: 3rem;
  overflow-x: auto;
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}

.custom-clean-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9375rem;
}

.custom-clean-table th {
  background-color: var(--bg-sub);
  color: var(--text-main);
  font-weight: 600;
  padding: 1.125rem 1.5rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.custom-clean-table td {
  padding: 1.125rem 1.5rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-body);
  vertical-align: top;
  line-height: 1.7;
}

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

.custom-clean-table tr:hover td {
  background-color: #FCFCFA;
}

.table-type-cell {
  font-weight: 700;
  color: var(--text-main);
  white-space: nowrap;
}

/* ==================================================
   04 / AI工具经纬区域 (纵向主题带 × 3横向内容带)
   ================================================== */
.ai-weave-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2.5rem;
}

.ai-vertical-pillar {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-top: 3px solid var(--indigo-grey);
  border-radius: var(--radius-sm);
  padding: 2rem 1.5rem;
}

.ai-horizontal-band-stack {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.ai-platform-strip {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.75rem 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ai-strip-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.75rem;
}

.ai-names {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.ai-category-tag {
  font-size: 0.8125rem;
  color: var(--sand-gold);
  font-weight: 600;
}

.ai-factors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.factor-item h4 {
  font-size: 0.875rem;
  color: var(--indigo-grey);
  margin-bottom: 0.25rem;
}

.factor-item p {
  font-size: 0.875rem;
  color: var(--text-body);
  line-height: 1.6;
  margin: 0;
}

/* ==================================================
   05 / 流媒体 (横向平台带，不同宽度层次)
   ================================================== */
.streaming-platform-stack {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.stream-strip {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.stream-strip:hover {
  border-color: var(--indigo-grey);
  transform: translateX(3px);
}

/* 宽窄变化 */
.stream-strip-wide {
  width: 100%;
  border-left: 3px solid var(--indigo-grey);
}

.stream-strip-medium {
  width: 95%;
  margin-left: 2.5%;
  border-left: 3px solid var(--ink-green);
}

.stream-strip-slender {
  width: 90%;
  margin-left: 5%;
  border-left: 3px solid var(--sand-gold);
}

.stream-brand-col {
  min-width: 180px;
}

.stream-brand-col h3 {
  margin: 0;
  font-size: 1.25rem;
}

.stream-detail-flow {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  flex: 1;
}

.detail-point {
  display: flex;
  flex-direction: column;
}

.detail-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
}

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

/* ==================================================
   06 / 客户端 (横向设备 × 纵向流程)
   ================================================== */
.clients-device-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

.device-card-tab {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  text-align: left;
  border-top: 2px solid transparent;
  transition: all 0.2s ease;
}

.device-card-tab:hover {
  border-top-color: var(--indigo-grey);
  box-shadow: var(--shadow-soft);
}

.device-title {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.device-app-recommend {
  font-size: 0.8125rem;
  color: var(--indigo-grey);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.device-summary-text {
  font-size: 0.875rem;
  color: var(--text-body);
  line-height: 1.6;
}

/* 纵向操作流程步骤 */
.workflow-step-strip {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2rem;
  margin-top: 1.5rem;
}

.steps-interlace-list {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  position: relative;
}

.workflow-step-item {
  display: flex;
  flex-direction: column;
}

.step-num-badge {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--sand-gold);
  margin-bottom: 0.5rem;
}

.step-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.5rem;
}

.step-content {
  font-size: 0.875rem;
  color: var(--text-body);
  line-height: 1.65;
}

/* ==================================================
   07 / 完整价格 (织带价目 - 起点终点不同错位交错)
   ================================================== */
.commercial-ribbon-showcase {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.commercial-ribbon-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.75rem 2.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  position: relative;
}

.commercial-ribbon-row:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-hover);
}

/* 错位起点与终点 */
.comm-row-1 {
  width: 90%;
  margin-left: 0;
  background-color: var(--bg-white);
}

.comm-row-2 {
  width: 95%;
  margin-left: 5%;
  background-color: var(--bg-blue-grey);
}

.comm-row-3.comm-flagship {
  width: 100%;
  margin-left: 0;
  background-color: var(--bg-green-grey);
  border-left: 4px solid var(--ink-green);
  border-color: #CAD5CE;
  box-shadow: var(--shadow-soft);
}

.comm-row-4 {
  width: 93%;
  margin-left: 2%;
  background-color: var(--bg-white);
}

.comm-row-5 {
  width: 88%;
  margin-left: 8%;
  background-color: var(--bg-sand);
}

.comm-plan-identity {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  min-width: 200px;
}

.comm-idx {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--sand-gold);
}

.comm-name {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--text-main);
}

.comm-data-vol {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--deep-green);
  min-width: 150px;
}

.comm-cost-digits {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  min-width: 150px;
}

.comm-features-desc {
  font-size: 0.9375rem;
  color: var(--text-body);
  flex: 1;
}

/* 快速选择指导条 */
.quick-selection-guide {
  margin-top: 2.5rem;
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.quick-guide-label {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-main);
}

.quick-guide-items {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.875rem;
}

.quick-guide-items span strong {
  color: var(--deep-green);
}

/* ==================================================
   08 / 锦云机场评测入口卡片
   ================================================== */
.review-preview-band {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-left: 4px solid var(--indigo-grey);
  border-radius: var(--radius-sm);
  padding: 2.5rem 3rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
}

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

.review-preview-title {
  font-size: 1.625rem;
  margin-bottom: 0.75rem;
}

.review-quick-conclusion {
  background-color: var(--bg-sub);
  border-left: 2px solid var(--sand-gold);
  padding: 1rem 1.25rem;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

/* ==================================================
   09 / 教程经纬目录 (横向核心阅读 + 3纵向主题柱)
   ================================================== */
.tutorials-weave-catalog {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.catalog-horizontal-core {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2rem 2.5rem;
}

.core-strip-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--sand-gold);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.core-articles-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.core-article-item {
  display: flex;
  flex-direction: column;
}

.article-category-badge {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--indigo-grey);
  margin-bottom: 0.375rem;
}

.core-article-item h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.core-article-item p {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-body);
  margin-bottom: 0.75rem;
}

.catalog-vertical-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.catalog-vertical-col {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2rem 1.75rem;
  display: flex;
  flex-direction: column;
}

.catalog-col-header {
  border-bottom: 2px solid var(--border-subtle);
  padding-bottom: 0.75rem;
  margin-bottom: 1.25rem;
}

.catalog-col-title {
  font-size: 1.1875rem;
  font-weight: 700;
  color: var(--text-main);
}

.catalog-articles-stack {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  flex: 1;
}

.catalog-article-card {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.catalog-article-card h4 {
  font-size: 1.0625rem;
  font-weight: 600;
}

.catalog-article-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin: 0;
}

.article-meta-line {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* ==================================================
   10 / 网络排障经纬结构 (纵向故障类别 × 横向检查方向)
   ================================================== */
.troubleshooting-weave-matrix {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 2.5rem;
}

.trouble-vertical-index {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.trouble-index-item {
  padding: 0.625rem 0.875rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-body);
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
  transition: all 0.2s ease;
}

.trouble-index-item:hover,
.trouble-index-item.active {
  background-color: var(--bg-sub);
  color: var(--text-main);
  border-left-color: var(--indigo-grey);
}

.trouble-horizontal-solutions {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.trouble-step-strip {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem 2rem;
}

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

.trouble-category-title {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-main);
}

.trouble-priority-label {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--terracotta);
}

.trouble-detail-body {
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.75;
}

/* ==================================================
   11 / FAQ 问答织带 (错位细带手风琴，无卡片堆叠)
   ================================================== */
.faq-ribbon-container {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 2rem;
}

.faq-ribbon-item {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: border-color 0.2s ease;
}

/* 错位轻微织带效果 */
.faq-ribbon-item:nth-child(even) {
  margin-left: 1.5%;
  width: 98.5%;
}

.faq-ribbon-item:nth-child(odd) {
  margin-right: 1.5%;
  width: 98.5%;
}

.faq-ribbon-item:hover {
  border-color: var(--indigo-grey);
}

.faq-trigger {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 1.25rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-family: inherit;
}

.faq-q-group {
  display: flex;
  align-items: baseline;
  gap: 1rem;
}

.faq-index {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--sand-gold);
}

.faq-question-text {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-main);
  text-align: left;
}

.faq-icon-cross {
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--text-muted);
  transition: transform 0.25s ease;
  flex-shrink: 0;
}

.faq-ribbon-item.expanded .faq-icon-cross {
  transform: rotate(45deg);
}

.faq-content-drawer {
  display: none;
  padding: 0 1.75rem 1.5rem 3.5rem;
  font-size: 0.9375rem;
  color: var(--text-body);
  line-height: 1.8;
  border-top: 1px solid var(--border-subtle);
}

.faq-ribbon-item.expanded .faq-content-drawer {
  display: block;
}

/* ==================================================
   Footer (浅暖灰 #F2F1EC, 250px-320px, 栏目细竖线分隔, 友情链接)
   ================================================== */
.site-footer {
  background-color: #F2F1EC;
  color: #4C5558;
  border-top: 1px solid var(--border);
  padding-top: 3.5rem;
  padding-bottom: 2.5rem;
  font-size: 0.9375rem;
}

.footer-top-strip {
  display: grid;
  grid-template-columns: 280px repeat(3, 1fr) 200px;
  gap: 2rem;
  padding-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.footer-brand-column {
  display: flex;
  flex-direction: column;
}

.footer-brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 0.375rem;
}

.footer-tagline {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

.footer-links-column {
  position: relative;
  padding-left: 1.5rem;
}

.footer-links-column::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 1px;
  background-color: var(--border);
}

.footer-column-heading {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1rem;
  letter-spacing: 0.03em;
}

.footer-links-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links-list li a {
  color: #5B6467;
  font-size: 0.875rem;
}

.footer-links-list li a:hover {
  color: var(--text-main);
}

.footer-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-top: 2rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.friendship-links {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.friendship-label {
  font-weight: 600;
  color: var(--text-main);
}

.friendship-links a {
  color: #5B6467;
}

.friendship-links a:hover {
  color: var(--text-main);
}

/* ==================================================
   文章详情页与分类页专属样式 (高级编辑阅读风)
   ================================================== */
.page-header-band {
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border);
  padding: 3rem 0;
}

.breadcrumb-nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

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

.breadcrumb-nav a:hover {
  color: var(--indigo-grey);
}

.breadcrumb-separator {
  color: var(--border);
}

.article-hero-title {
  margin-bottom: 1.25rem;
  color: var(--text-main);
}

.article-summary-lead {
  font-size: 1.1875rem;
  line-height: 1.85;
  color: var(--text-body);
  max-width: 860px;
  margin-bottom: 1.5rem;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.article-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

/* 文章主布局：正文 (760px-820px) + 右侧轻量目录 (220px-240px) */
.article-reading-layout {
  display: grid;
  grid-template-columns: 1fr 240px;
  gap: 3.5rem;
  padding-top: 3.5rem;
  padding-bottom: 5rem;
  align-items: start;
}

.article-main-content {
  max-width: 820px;
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3rem;
  box-shadow: var(--shadow-soft);
}

/* 快速结论横向带 */
.quick-conclusion-strip {
  background-color: var(--bg-green-grey);
  border-left: 4px solid var(--ink-green);
  border-radius: var(--radius-sm);
  padding: 1.5rem 1.75rem;
  margin-bottom: 2.5rem;
}

.quick-conclusion-strip h3 {
  font-size: 1.125rem;
  color: var(--deep-green);
  margin-bottom: 0.5rem;
}

.quick-conclusion-strip p {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--text-main);
  margin: 0;
}

/* 文章正文富排版 */
.article-body-prose h2 {
  font-size: 1.625rem;
  margin-top: 2.75rem;
  margin-bottom: 1rem;
  padding-left: 0.875rem;
  border-left: 3px solid var(--indigo-grey); /* 横标题 × 竖主题 经纬语言 */
  color: var(--text-main);
  line-height: 1.4;
}

.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: 1.85;
  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 li {
  margin-bottom: 0.625rem;
  font-size: 1.0625rem;
  line-height: 1.8;
}

.article-body-prose blockquote {
  border-left: 3px solid var(--sand-gold);
  background-color: var(--bg-sub);
  padding: 1.25rem 1.5rem;
  margin: 1.75rem 0;
  font-size: 1rem;
  color: var(--text-body);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* 右侧轻量目录 (Sticky) */
.article-toc-sidebar {
  position: sticky;
  top: 90px;
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
}

.toc-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-subtle);
}

.toc-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  font-size: 0.875rem;
}

.toc-nav-list li a {
  color: var(--text-body);
  display: block;
  line-height: 1.5;
}

.toc-nav-list li a:hover,
.toc-nav-list li a.active {
  color: var(--indigo-grey);
  font-weight: 600;
}

/* 文章底部关联阅读 */
.article-related-links-block {
  margin-top: 3.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}

.related-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

.related-items-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.related-card {
  background-color: var(--bg-sub);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1.25rem;
  transition: border-color 0.2s ease;
}

.related-card:hover {
  border-color: var(--indigo-grey);
}

.related-card h4 {
  font-size: 1rem;
  margin-bottom: 0.375rem;
}

.related-card p {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0;
}

/* 分类页面经纬布局 */
.category-page-header {
  background-color: var(--bg-white);
  border-bottom: 1px solid var(--border);
  padding: 3.5rem 0;
}

.category-intro-box {
  background-color: var(--bg-sub);
  border-left: 3px solid var(--indigo-grey);
  padding: 1.25rem 1.75rem;
  margin-top: 1.5rem;
  max-width: 800px;
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--text-body);
}

.category-article-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  padding: 3.5rem 0 5rem 0;
}

.category-article-row {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2rem 2.5rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.category-article-row:hover {
  transform: translateX(4px);
  border-color: var(--indigo-grey);
}

/* 404 & Sitemap 样式 */
.notfound-wrapper {
  padding: 6rem 0;
  text-align: center;
  max-width: 680px;
  margin: 0 auto;
}

.notfound-code {
  font-size: 5rem;
  font-weight: 800;
  color: var(--sand-gold);
  line-height: 1;
  margin-bottom: 1rem;
}

.notfound-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 2rem;
}

.sitemap-group-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  padding: 3.5rem 0 5rem 0;
}

.sitemap-col-card {
  background-color: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 2rem;
}

.sitemap-col-card h2 {
  font-size: 1.1875rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 0.75rem;
  margin-bottom: 1rem;
}

.sitemap-links-ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  font-size: 0.9375rem;
}

/* ==================================================
   响应式断点控制 (移动优先与特定尺寸适配 375, 390, 430, 768, 1024, 1440)
   ================================================== */
@media (max-width: 1024px) {
  .hero-weave-stage {
    min-height: auto;
  }
  
  .hero-weft-strip {
    position: relative;
    top: 0;
    margin-bottom: 1.5rem;
  }

  .hero-warp-columns {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    margin-top: 1.5rem !important;
  }

  .hero-warp-column {
    max-width: 100%;
    margin-top: 0 !important;
  }

  .lines-interweave-layout,
  .ai-weave-layout,
  .troubleshooting-weave-matrix {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .latitude-quadrant-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .latitude-column:not(:last-child)::after {
    display: none;
  }

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

  .article-toc-sidebar {
    display: none;
  }

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

@media (max-width: 768px) {
  /* 导航栏 */
  .nav-desktop {
    display: none;
  }

  .menu-toggle {
    display: block;
  }

  /* Hero经纬手机端自适应：取消交叉，顺序单列排列 */
  .hero-weft-strip {
    flex-direction: column;
    height: auto;
    padding: 1.5rem;
    gap: 1.25rem;
    align-items: flex-start;
  }

  .weft-items-flow {
    margin: 0;
    flex-wrap: wrap;
    gap: 1.25rem;
  }

  /* 套餐经线手机端：取消横向错位，100%全宽 */
  .weft-plan-ribbon,
  .plan-ribbon-1,
  .plan-ribbon-2,
  .plan-ribbon-3,
  .plan-ribbon-4,
  .plan-ribbon-5 {
    width: 100% !important;
    margin-left: 0 !important;
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
    gap: 1rem;
  }

  .plan-primary-info {
    flex-direction: column;
    gap: 0.25rem;
  }

  .plan-cta-action {
    width: 100%;
  }

  .plan-cta-action .btn {
    width: 100%;
  }

  /* 节点纬线 */
  .latitude-baseline-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .latitude-quadrant-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  /* 流媒体与客户端 */
  .stream-strip,
  .stream-strip-wide,
  .stream-strip-medium,
  .stream-strip-slender {
    width: 100% !important;
    margin-left: 0 !important;
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .stream-detail-flow {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .clients-device-row,
  .steps-interlace-list {
    grid-template-columns: 1fr;
  }

  /* 完整价格织带价目手机端 */
  .commercial-ribbon-row,
  .comm-row-1,
  .comm-row-2,
  .comm-row-3,
  .comm-row-4,
  .comm-row-5 {
    width: 100% !important;
    margin-left: 0 !important;
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
    gap: 1rem;
  }

  .comm-plan-identity {
    flex-direction: column;
    gap: 0.25rem;
  }

  .review-preview-band {
    flex-direction: column;
    align-items: flex-start;
    padding: 2rem 1.5rem;
  }

  .core-articles-row,
  .catalog-vertical-columns,
  .ai-factors-grid,
  .sitemap-group-grid,
  .related-items-grid {
    grid-template-columns: 1fr;
  }

  .faq-ribbon-item:nth-child(even),
  .faq-ribbon-item:nth-child(odd) {
    width: 100% !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
  }

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

  .footer-links-column {
    padding-left: 0;
  }

  .footer-links-column::before {
    display: none;
  }

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

  .article-main-content {
    padding: 1.75rem;
  }
}

/* ==================================================
   Prefers Reduced Motion 减弱动效
   ================================================== */
@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;
  }
}

/* 打印样式支持 */
@media print {
  .site-header,
  .site-footer,
  .btn,
  .article-toc-sidebar {
    display: none !important;
  }
  
  body {
    background: #FFFFFF;
    color: #000000;
  }
}