/* ==========================================================================
   财路云 (cailuyun.shop) - 核心样式表
   设计规范：Layer 1.5 — Scientific Laboratory Conversion UI
   配色系统：
     Background: #F4F7F8 | Primary: #172B3A | Secondary: #4B7882
     Accent: #38A6A0     | Surface: #FFFFFF | Border: #D8E1E5
   命名规范：BEM
   ========================================================================== */

:root {
  --color-bg: #F4F7F8;
  --color-surface: #FFFFFF;
  --color-surface-alt: #EAF0F2;
  --color-primary: #172B3A;
  --color-secondary: #4B7882;
  --color-text: #172B3A;
  --color-text-secondary: #2C4657;
  --color-text-muted: #4B7882;
  --color-accent: #38A6A0;
  --color-accent-hover: #2B8681;
  --color-accent-soft: #E5F5F4;
  --color-border: #D8E1E5;
  --color-border-strong: #172B3A;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --max-width: 1160px;
  --header-height: 64px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.65;
  overflow-x: hidden;
  padding-bottom: 72px;
  background-image: radial-gradient(#D8E1E5 1px, transparent 1px);
  background-size: 24px 24px;
}

@media (min-width: 768px) {
  body {
    padding-bottom: 0;
  }
}

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-decoration-color: var(--color-accent);
  text-underline-offset: 3px;
  transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease;
}

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

a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
}

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

ul, ol {
  list-style: none;
}

.mono-meta {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  letter-spacing: 0.01em;
}

/* 布局容器 */
.layout-container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* 顶部导航栏 — 实验室仪器顶栏风格 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: rgba(244, 247, 248, 0.94);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

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

.site-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-primary);
  text-decoration: none;
  min-height: 44px;
}

.site-header__logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background-color: var(--color-primary);
  border: 2px solid var(--color-accent);
  color: #FFFFFF;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 2px;
}

.site-header__version {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-secondary);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 0.1rem 0.45rem;
  border-radius: 2px;
}

.site-header__toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  color: var(--color-primary);
  cursor: pointer;
}

.site-header__nav {
  display: none;
  position: absolute;
  top: var(--header-height);
  left: 0;
  right: 0;
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-primary);
  padding: 1rem 1.25rem;
}

.site-header__nav--open {
  display: block;
}

.site-header__menu {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.site-header__link {
  display: flex;
  align-items: center;
  min-height: 44px;
  padding: 0 0.75rem;
  color: var(--color-text-secondary);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border-radius: 2px;
}

.site-header__link:hover {
  color: var(--color-primary);
  background-color: var(--color-surface-alt);
}

.site-header__cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 1.125rem;
  background-color: var(--color-primary);
  border: 1px solid var(--color-primary);
  color: #FFFFFF !important;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.925rem;
  border-radius: 2px;
  margin-top: 0.5rem;
}

.site-header__cta:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
}

@media (min-width: 768px) {
  .site-header__toggle {
    display: none;
  }
  .site-header__nav {
    display: flex;
    position: static;
    background: transparent;
    border-bottom: none;
    padding: 0;
    align-items: center;
    gap: 1.5rem;
  }
  .site-header__menu {
    flex-direction: row;
    align-items: center;
    gap: 0.25rem;
  }
  .site-header__cta {
    margin-top: 0;
  }
}

/* 按钮组件 — 高对比度实验室仪器回馈感 */
.btn-action {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 2px;
  cursor: pointer;
  text-align: center;
  text-decoration: none;
  border: 2px solid transparent;
  transition: transform 0.1s ease, background-color 0.15s ease, box-shadow 0.15s ease;
}

.btn-action:active {
  transform: translateY(1px);
}

.btn-action--primary {
  background-color: var(--color-primary);
  color: #FFFFFF !important;
  border-color: var(--color-primary);
  box-shadow: 3px 3px 0 var(--color-accent);
}

.btn-action--primary:hover {
  background-color: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: 4px 4px 0 var(--color-primary);
}

.btn-action--secondary {
  background-color: var(--color-surface);
  color: var(--color-primary) !important;
  border-color: var(--color-primary);
}

.btn-action--secondary:hover {
  background-color: var(--color-surface-alt);
}

.btn-action--full {
  width: 100%;
}

/* 通用区块样式 */
.page-section {
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--color-border);
}

.page-section--alt {
  background-color: var(--color-surface);
}

@media (min-width: 768px) {
  .page-section {
    padding: 5rem 0;
  }
}

.section-header {
  margin-bottom: 2.5rem;
  max-width: 760px;
}

.section-header__meta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-accent-soft);
  padding: 0.25rem 0.75rem;
  border: 1px solid var(--color-accent);
  border-left: 4px solid var(--color-accent);
  margin-bottom: 0.85rem;
}

.section-header__title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.25;
  margin-bottom: 0.75rem;
}

@media (min-width: 768px) {
  .section-header__title {
    font-size: 2.125rem;
  }
}

.section-header__desc {
  font-size: 1.025rem;
  color: var(--color-text-secondary);
}

/* 首屏 Hero 模块 — 科学仪器与实验报告面板 */
.hero-panel {
  padding: 3rem 0 4rem;
  background-color: var(--color-surface);
  border-bottom: 2px solid var(--color-primary);
}

.hero-panel__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  align-items: start;
}

@media (min-width: 960px) {
  .hero-panel {
    padding: 4rem 0 5rem;
  }
  .hero-panel__grid {
    grid-template-columns: 1.08fr 0.92fr;
    gap: 3rem;
  }
}

.hero-panel__status {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 0.35rem 0.85rem;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-secondary);
  margin-bottom: 1.25rem;
}

.hero-panel__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.hero-panel__title {
  font-size: 2.1rem;
  font-weight: 900;
  line-height: 1.2;
  color: var(--color-primary);
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

@media (min-width: 768px) {
  .hero-panel__title {
    font-size: 2.75rem;
  }
}

.hero-panel__subtitle {
  font-size: 1.125rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.5rem;
  max-width: 580px;
}

.hero-panel__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

.hero-panel__conditions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-secondary);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 0.65rem 0.9rem;
  margin-bottom: 1.75rem;
}

/* 转化减阻三步流程图 (Workflow Diagram) */
.workflow-strip {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--color-border);
}

@media (min-width: 560px) {
  .workflow-strip {
    grid-template-columns: repeat(3, 1fr);
  }
}

.workflow-step {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 0.75rem;
}

.workflow-step__code {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent-hover);
  margin-bottom: 0.2rem;
}

.workflow-step__name {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* 右侧实验室仪器诊断面板与可交互节点图 */
.hero-panel__diagram {
  background-color: var(--color-bg);
  border: 2px solid var(--color-primary);
  padding: 1.25rem;
  box-shadow: 6px 6px 0 var(--color-border);
}

.hero-panel__diagram-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-bottom: 0.75rem;
  margin-bottom: 0.85rem;
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-primary);
}

.lab-node-buttons {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.5rem;
  margin-top: 0.85rem;
}

@media (min-width: 540px) {
  .lab-node-buttons {
    grid-template-columns: repeat(4, 1fr);
  }
}

.lab-node-btn {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  padding: 0.5rem 0.4rem;
  min-height: 44px;
  background-color: var(--color-surface);
  color: var(--color-primary);
  border: 1px solid var(--color-border);
  cursor: pointer;
  text-align: center;
}

.lab-node-btn[aria-selected="true"],
.lab-node-btn:hover {
  border-color: var(--color-primary);
  background-color: var(--color-accent-soft);
}

.lab-node-readout {
  margin-top: 0.75rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-accent);
  padding: 0.75rem;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.lab-node-readout__code {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-primary);
  display: block;
  margin-bottom: 0.25rem;
}

/* 特性卡模块 — 结构化实验观察报告 (4张) */
.feature-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 640px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .feature-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.feature-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-primary);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.feature-card__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.feature-card__code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-secondary);
  background-color: var(--color-bg);
  padding: 0.15rem 0.5rem;
  border: 1px solid var(--color-border);
}

.feature-card__icon {
  width: 40px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-accent-soft);
  color: var(--color-primary);
  border: 1px solid var(--color-accent);
}

.feature-card__title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-primary);
}

.feature-card__desc {
  font-size: 0.925rem;
  color: var(--color-text-secondary);
}

.feature-card__tag {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-secondary);
}

/* 实验室交互式数据集切换面板 (Tabs Switch Between Datasets) */
.dataset-tabs {
  margin-bottom: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  border-bottom: 2px solid var(--color-border);
  padding-bottom: 0.75rem;
}

.dataset-tab {
  min-height: 44px;
  padding: 0.5rem 1.1rem;
  font-family: var(--font-sans);
  font-size: 0.925rem;
  font-weight: 700;
  background-color: var(--color-bg);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
  cursor: pointer;
}

.dataset-tab[aria-selected="true"] {
  background-color: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
}

.dataset-panel {
  display: none;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.dataset-panel--active {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .dataset-panel--active {
    grid-template-columns: 1.2fr 0.8fr;
  }
}

.dataset-spec-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.6rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 1rem;
}

.dataset-spec-row {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  font-size: 0.875rem;
  padding-bottom: 0.45rem;
  border-bottom: 1px dashed var(--color-border);
}

.dataset-spec-row:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.dataset-spec-key {
  color: var(--color-secondary);
  font-weight: 600;
}

.dataset-spec-val {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-primary);
}

/* 使用场景卡 (4张) */
.scenario-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .scenario-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.scenario-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

.scenario-card__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
}

.scenario-card__title {
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-primary);
}

.scenario-card__device {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-primary);
  background-color: var(--color-accent-soft);
  border: 1px solid var(--color-accent);
  padding: 0.2rem 0.6rem;
  white-space: nowrap;
}

.scenario-card__desc {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

/* 流媒体 & AI 支持面板 */
.matrix-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

@media (min-width: 768px) {
  .matrix-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .matrix-grid {
    grid-template-columns: repeat(6, 1fr);
  }
}

.matrix-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 1.25rem 1rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
}

.matrix-item__code {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--color-secondary);
}

.matrix-item__name {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--color-primary);
}

.matrix-item__note {
  font-size: 0.825rem;
  color: var(--color-text-secondary);
}

/* 核心优势对比表与技术术语解释 (Benefits + Technical Term Glossary) */
.benefit-board {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

@media (min-width: 768px) {
  .benefit-board {
    grid-template-columns: repeat(3, 1fr);
  }
}

.benefit-item {
  background-color: var(--color-surface);
  border-left: 4px solid var(--color-accent);
  border-top: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem;
}

.benefit-item__title {
  font-size: 1.125rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  color: var(--color-primary);
}

.benefit-item__text {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.glossary-bar {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 1.25rem;
}

.glossary-bar__title {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.glossary-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

@media (min-width: 768px) {
  .glossary-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.glossary-term {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 0.75rem 1rem;
}

.glossary-term summary {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-primary);
  cursor: pointer;
  min-height: 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.glossary-term p {
  margin-top: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px dashed var(--color-border);
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

/* 定价模块 — 透明实验参数对比 (3档，中档突出) */
.pricing-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: stretch;
}

@media (min-width: 900px) {
  .pricing-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.plan-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  position: relative;
}

.plan-card--featured {
  border: 2px solid var(--color-primary);
  box-shadow: 6px 6px 0 var(--color-accent);
}

.plan-card__badge {
  position: absolute;
  top: -13px;
  right: 1.25rem;
  background-color: var(--color-primary);
  border: 1px solid var(--color-accent);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 800;
  padding: 0.2rem 0.75rem;
}

.plan-card__audience {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-secondary);
  margin-bottom: 0.35rem;
}

.plan-card__name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.plan-card__price {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  padding-bottom: 1.25rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--color-border);
}

.plan-card__amount {
  font-family: var(--font-mono);
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--color-primary);
}

.plan-card__cycle {
  font-size: 0.95rem;
  color: var(--color-secondary);
  font-weight: 600;
}

.plan-card__list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.plan-card__item {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.925rem;
  color: var(--color-text-secondary);
}

.plan-card__check {
  color: var(--color-accent-hover);
  font-weight: 900;
  flex-shrink: 0;
}

.plan-card__meta-note {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--color-secondary);
  background-color: var(--color-bg);
  padding: 0.5rem 0.65rem;
  border: 1px solid var(--color-border);
  margin-bottom: 1rem;
}

/* FAQ 手风琴模块 */
.faq-list {
  max-width: 840px;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.faq-item {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
}

.faq-item__summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.15rem 1.25rem;
  font-size: 1.025rem;
  font-weight: 700;
  color: var(--color-primary);
  cursor: pointer;
  list-style: none;
  min-height: 52px;
}

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

.faq-item__indicator {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-accent-hover);
  margin-left: 1rem;
  transition: transform 0.15s ease;
}

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

.faq-item__answer {
  padding: 0 1.25rem 1.25rem;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
}

/* Final CTA 模块 */
.cta-banner {
  background-color: var(--color-primary);
  color: #FFFFFF;
  padding: 4rem 0;
  border-bottom: 1px solid var(--color-border);
}

.cta-banner__inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.75rem;
}

@media (min-width: 768px) {
  .cta-banner__inner {
    flex-direction: row;
    align-items: center;
  }
}

.cta-banner__title {
  font-size: 1.65rem;
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 0.5rem;
}

.cta-banner__sub {
  font-size: 1rem;
  color: #D8E1E5;
}

/* 页脚 Footer */
.site-footer {
  background-color: var(--color-surface);
  padding: 3rem 0 2.5rem;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.site-footer__top {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--color-border);
}

@media (min-width: 768px) {
  .site-footer__top {
    flex-direction: row;
    align-items: center;
  }
}

.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.site-footer__link {
  color: var(--color-text-secondary);
  font-weight: 600;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.site-footer__link:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

.site-footer__bottom {
  padding-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--color-secondary);
}

/* 移动端吸底 CTA */
.mobile-sticky {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 90;
  background-color: var(--color-surface);
  border-top: 2px solid var(--color-primary);
  padding: 0.65rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  transform: translateY(100%);
  transition: transform 0.2s ease;
}

.mobile-sticky--visible {
  transform: translateY(0);
}

@media (min-width: 768px) {
  .mobile-sticky {
    display: none;
  }
}

.mobile-sticky__text {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
}

.mobile-sticky__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 1.25rem;
  background-color: var(--color-primary);
  color: #FFFFFF !important;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
  border-radius: 2px;
  white-space: nowrap;
}

/* 指南列表与文章页排版 */
.breadcrumb-bar {
  padding: 1rem 0;
  background-color: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-mono);
  font-size: 0.825rem;
}

.breadcrumb-bar__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

.guide-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .guide-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .guide-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.guide-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
}

.guide-card__thumb {
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg);
  padding: 1.25rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.guide-card__body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.guide-card__meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-secondary);
  margin-bottom: 0.5rem;
  display: flex;
  gap: 0.75rem;
}

.guide-card__title {
  font-size: 1.175rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  line-height: 1.35;
}

.guide-card__title a {
  color: var(--color-primary);
  text-decoration: none;
}

.guide-card__title a:hover {
  color: var(--color-accent-hover);
}

.guide-card__excerpt {
  font-size: 0.925rem;
  color: var(--color-text-secondary);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.guide-card__more {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-weight: 700;
  font-size: 0.925rem;
}

/* 文章内容容器 */
.article-wrap {
  max-width: 820px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

.article-header {
  padding-bottom: 1.75rem;
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--color-primary);
}

.article-header__title {
  font-size: 1.85rem;
  font-weight: 900;
  line-height: 1.3;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

@media (min-width: 768px) {
  .article-header__title {
    font-size: 2.35rem;
  }
}

.article-header__meta {
  font-family: var(--font-mono);
  font-size: 0.825rem;
  color: var(--color-secondary);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.article-content h2 {
  font-size: 1.45rem;
  font-weight: 800;
  margin: 2.25rem 0 1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-primary);
}

.article-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 1.5rem 0 0.65rem;
  color: var(--color-primary);
}

.article-content p {
  margin-bottom: 1.15rem;
  font-size: 1.025rem;
  color: var(--color-text-secondary);
}

.article-content ul,
.article-content ol {
  margin: 0 0 1.25rem 1.25rem;
  color: var(--color-text-secondary);
}

.article-content ul {
  list-style: disc;
}

.article-content ol {
  list-style: decimal;
}

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

.article-box {
  background-color: var(--color-surface);
  border: 2px solid var(--color-primary);
  box-shadow: 5px 5px 0 var(--color-accent);
  padding: 1.75rem;
  margin: 2.5rem 0;
}

.article-box__title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.6rem;
  color: var(--color-primary);
}

.article-related {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 1.5rem;
  margin-top: 2.5rem;
}

.article-related__list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    transition: none !important;
  }
}