/* ===================================================================
   Shadowrocket 小火箭加速器 - 广州交易会胸牌工程版样式表
   规范：3:1 通栏条，环形留白，标题沿内圆左齐，竖排侧脊+横排正文，上密下疏
   主标题占幅 34%，模块间隙 13pt (17.33px)，安全边 3.3%
   设计：大理石纹仅作一条分割；材质：铜版纸高光；装饰仅在侧脊；禁止渐变与投影
   圆角：19px 19px 19px 7px (19 / 19 / 19 / 7)
   骨架：路径骨架（设备 → 来源 → 校验）；关键词植入「小火箭免费节点2026」；断行：动作后置；信息点：5
   色彩：浅底 绛红 薄洗 (#faf2f5, #f6e8ee, 约344°)，墨字 (#1b1c53, #15163d)，分割线 琥珀 (#b47b2b)
   参考色：#D57BA9 (绛红洋红) / #1B1C53 (墨字深青紫)
   =================================================================== */

:root {
  /* 基础色彩：浅底 绛红 薄洗 344° */
  --bg-wash: #faf2f5;          /* 绛红薄洗极浅底色 */
  --bg-card: #ffffff;          /* 铜版纸高光纯净白底 */
  --bg-paper-tint: #f6e8ee;     /* 绛红薄洗次级浅底 */
  --bg-spine: #8f1d46;         /* 广州交易会胸牌深绛红侧脊 */
  --bg-spine-accent: #d57ba9;  /* 参考色：绛粉玫瑰 */

  /* 文字系统：墨字 */
  --text-ink: #1b1c53;         /* 参考色：深墨字 */
  --text-body: #2b2c6b;        /* 正文浓墨色 */
  --text-muted: #6b637d;       /* 辅助说明灰紫 */

  /* 分割线与装饰：琥珀色 */
  --border-amber: #b47b2b;     /* 分割线 琥珀色 */
  --border-light: #e8d0da;     /* 铜版纸卡片平涂边框 */
  --border-focus: #8f1d46;     /* 绛红聚焦边 */

  /* 规格常量 */
  --module-gap: 17.33px;       /* 13pt 模块间隙 */
  --safe-edge: 3.3%;           /* 安全边 3.3% */
  --radius-spec: 19px 19px 19px 7px; /* 19 / 19 / 19 / 7 */

  /* 字体族 */
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Consolas", monospace;
}

/* 全局平涂重置：严禁任何渐变与投影 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  text-shadow: none !important;
  box-shadow: none !important;
  background-image: none !important;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-wash);
  color: var(--text-ink);
  font-family: var(--font-sans);
  line-height: 1.55;
  -webkit-text-size-adjust: 100%;
}

body {
  background-color: var(--bg-wash);
  min-height: 100vh;
  margin: 0;
  padding: 0;
  position: relative;
  overflow-x: hidden;
}

/* 环形留白容器 (3:1 通栏条感，开阔留白) */
.page-outer-ring {
  padding: 17.33px 4%;
  max-width: 1200px;
  margin: 0 auto;
}

/* 大理石纹仅作一条分割 (CSS平涂细密条状纹理模拟大理石剖切线，绝无渐变) */
.marble-divider {
  width: 100%;
  height: 5px;
  background-color: var(--border-amber);
  margin: var(--module-gap) 0;
  position: relative;
  border-radius: var(--radius-spec);
}
.marble-divider::after {
  content: "";
  position: absolute;
  top: 1px;
  left: 20%;
  width: 60%;
  height: 2px;
  background-color: #ffffff;
}

/* 侧脊装饰构件 (装饰只出现在侧脊)：竖排侧脊 + 广州交易会胸牌孔印 */
.canton-card {
  position: relative;
  background-color: var(--bg-card);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-spec);
  padding: 18px var(--safe-edge) 18px 46px; /* 留出左侧竖排侧脊空间 */
  margin-bottom: var(--module-gap);
}
.canton-spine {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  width: 34px;
  background-color: var(--bg-spine);
  border-top-left-radius: 19px;
  border-bottom-left-radius: 7px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  color: #ffffff;
  pointer-events: none;
  border-right: 1.5px solid var(--border-amber);
}
.spine-badge-hole {
  width: 12px;
  height: 6px;
  border-radius: 3px;
  background-color: var(--bg-wash);
  border: 1px solid var(--border-amber);
}
.spine-vertical-text {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  font-weight: 700;
  color: #fdf5f8;
}
.spine-bottom-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--border-amber);
}

/* 动作后置高亮 */
.action-post {
  display: inline-block;
  color: var(--bg-spine);
  font-weight: 700;
  margin-left: 4px;
}

/* 路径骨架：设备 → 来源 → 校验 */
.path-skeleton-box {
  border: 1.5px solid var(--border-amber);
  background-color: var(--bg-paper-tint);
  border-radius: var(--radius-spec);
  padding: 12px 16px;
  margin-top: 14px;
  margin-bottom: 14px;
}
.path-step-flow {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--bg-spine);
  margin-bottom: 8px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-light);
}
.path-arrow {
  color: var(--border-amber);
}
.path-content-rows {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.path-point-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-body);
}
.path-point-idx {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.75rem;
  color: #ffffff;
  background-color: var(--bg-spine);
  padding: 1px 6px;
  border-radius: var(--radius-spec);
  flex-shrink: 0;
}

/* ===================================================================
   1. 顶部导航 site-header
   =================================================================== */
.site-header {
  margin-bottom: var(--module-gap);
  padding: 12px var(--safe-edge) 12px 46px;
}
.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.brand-group {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}
.brand-logo-wrap {
  width: 36px;
  height: 36px;
  background-color: var(--bg-spine);
  border: 1px solid var(--border-amber);
  border-radius: var(--radius-spec);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
}
.brand-title {
  font-size: 1.18rem;
  font-weight: 800;
  color: var(--text-ink);
  letter-spacing: -0.01em;
}
.brand-subtitle {
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}
.nav-link {
  color: var(--text-body);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 6px 4px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.nav-link:hover, .nav-link.active {
  color: var(--bg-spine);
  border-bottom-color: var(--border-amber);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background-color: var(--bg-spine);
  color: #ffffff;
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  padding: 8px 18px;
  border-radius: var(--radius-spec);
  border: 1px solid var(--border-amber);
  cursor: pointer;
  white-space: nowrap;
}
.btn-primary:hover {
  background-color: #6d1434;
}
.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  background-color: var(--bg-paper-tint);
  color: var(--text-ink);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-spec);
  border: 1.5px solid var(--border-amber);
  cursor: pointer;
  white-space: nowrap;
}
.btn-secondary:hover {
  background-color: #f0dae3;
  color: var(--bg-spine);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-amber);
  border-radius: var(--radius-spec);
  color: var(--text-ink);
  padding: 6px 8px;
  cursor: pointer;
}

/* ===================================================================
   2. Hero 主视觉区 (双栏，主标题占幅 34%，上密下疏，5 个信息点)
   =================================================================== */
.hero-section {
  padding-top: 22px;
  padding-bottom: 24px;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: start;
}
.hero-content {
  padding-right: 8px;
}

/* 顶部徽章（注册送额度） */
.hero-badge-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  background-color: var(--bg-paper-tint);
  border: 1px solid var(--border-amber);
  color: var(--bg-spine);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 700;
  border-radius: var(--radius-spec);
  margin-bottom: 8px;
}

/* 主标题：占幅约 34%，纯墨字实色，禁止渐变 */
.hero-main-title {
  font-size: 2.05rem;
  line-height: 1.28;
  font-weight: 800;
  color: var(--text-ink);
  margin-top: 6px;
  margin-bottom: 12px;
  letter-spacing: -0.015em;
  max-width: 96%;
}
.hero-desc {
  font-size: 0.98rem;
  color: var(--text-body);
  line-height: 1.6;
  margin-bottom: 14px;
}

/* 卖点列表（4条带对勾）与动作后置结合 */
.hero-points-five {
  display: flex;
  flex-direction: column;
  gap: 7px;
  margin-bottom: 18px;
}
.hero-point-row {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--text-body);
  padding: 4px 8px;
  background-color: var(--bg-wash);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-spec);
}
.hero-check-icon {
  color: var(--bg-spine);
  font-weight: 800;
  flex-shrink: 0;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
}
.platform-mini-hints {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* 右侧：纯 CSS/SVG 模拟客户端 (铜版纸白底 + 绛红标牌) */
.mock-window {
  border: 1.5px solid var(--border-light);
  background-color: #ffffff;
  border-radius: var(--radius-spec);
  padding: 16px;
  position: relative;
}
.mock-window-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1.5px solid var(--border-amber);
  padding-bottom: 10px;
  margin-bottom: 12px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}
.mock-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 2px 8px;
  background-color: var(--bg-paper-tint);
  border: 1px solid var(--border-amber);
  color: var(--bg-spine);
  border-radius: var(--radius-spec);
  font-weight: 700;
}
.mock-status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--bg-spine);
}

.mock-chart-wrap {
  border: 1px solid var(--border-light);
  background-color: var(--bg-wash);
  border-radius: var(--radius-spec);
  padding: 10px;
  margin-bottom: 12px;
}
.chart-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.mock-node-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 12px;
}
.mock-node-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 10px;
  background-color: var(--bg-paper-tint);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-spec);
  font-size: 0.82rem;
}
.mock-node-item.selected {
  border-color: var(--border-amber);
  background-color: #ffffff;
}
.node-name {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-ink);
  font-weight: 600;
}
.node-ping {
  font-family: var(--font-mono);
  color: var(--bg-spine);
  font-weight: 700;
}

.mock-chips-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.mock-chip {
  padding: 8px;
  border: 1px solid var(--border-light);
  background-color: var(--bg-wash);
  border-radius: var(--radius-spec);
  text-align: center;
}
.chip-num {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--bg-spine);
}
.chip-label {
  font-size: 0.72rem;
  color: var(--text-muted);
}

/* ===================================================================
   3. 平台入口带 platform-strip (5 张平台卡片)
   =================================================================== */
.platform-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}
.platform-card {
  text-decoration: none;
  background-color: var(--bg-card);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-spec);
  padding: 12px;
  color: var(--text-ink);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: border-color 0.15s ease, background-color 0.15s ease;
}
.platform-card:hover {
  border-color: var(--border-amber);
  background-color: var(--bg-paper-tint);
}
.plat-icon-wrap {
  width: 42px;
  height: 42px;
  background-color: var(--bg-paper-tint);
  border: 1px solid var(--border-amber);
  border-radius: var(--radius-spec);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-spine);
  margin-bottom: 8px;
}
.plat-name {
  font-size: 0.95rem;
  font-weight: 800;
  margin-bottom: 2px;
}
.plat-req {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 4px;
}
.plat-ver {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--bg-spine);
  font-weight: 600;
}

/* ===================================================================
   4. 数据速览 stats-band (社会证明 4 格大数字)
   =================================================================== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.stat-box {
  background-color: var(--bg-card);
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-spec);
  padding: 14px 12px;
  text-align: center;
}
.stat-val {
  font-family: var(--font-mono);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--text-ink);
  line-height: 1.1;
  margin-bottom: 4px;
}
.stat-val span {
  color: var(--bg-spine);
}
.stat-title {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* 栏目标题公用样式 */
.section-title-wrap {
  margin-bottom: 14px;
}
.section-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--bg-spine);
  font-weight: 700;
  display: block;
  margin-bottom: 4px;
}
.section-heading {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--text-ink);
  display: flex;
  align-items: center;
  gap: 10px;
}
.section-heading::after {
  content: "";
  flex: 1;
  height: 1.5px;
  background-color: var(--border-amber);
}

/* ===================================================================
   5. 六大能力 feature-grid (回答解决什么问题)
   =================================================================== */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
}
.feature-card {
  border: 1.5px solid var(--border-light);
  background-color: var(--bg-card);
  border-radius: var(--radius-spec);
  padding: 16px;
}
.feat-icon-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}
.feat-icon-box {
  width: 34px;
  height: 34px;
  border: 1px solid var(--border-amber);
  background-color: var(--bg-paper-tint);
  border-radius: var(--radius-spec);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-spine);
}
.feat-title {
  font-size: 1.05rem;
  font-weight: 800;
  color: var(--text-ink);
}
.feat-solve-label {
  font-size: 0.75rem;
  color: var(--bg-spine);
  font-family: var(--font-mono);
  font-weight: 700;
  margin-bottom: 6px;
  display: block;
}
.feat-desc {
  font-size: 0.86rem;
  color: var(--text-body);
  line-height: 1.5;
}

/* ===================================================================
   6. 工作原理 tech-grid (延迟降45%为钩子，2编号条目)
   =================================================================== */
.tech-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}
.tech-card {
  border: 1.5px solid var(--border-light);
  background-color: var(--bg-paper-tint);
  border-radius: var(--radius-spec);
  padding: 16px;
}
.tech-card-badge {
  display: inline-block;
  background-color: var(--bg-spine);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-spec);
  margin-bottom: 10px;
}
.tech-item {
  display: flex;
  gap: 12px;
  padding: 10px 0;
}
.tech-item:not(:last-child) {
  border-bottom: 1px dashed var(--border-light);
}
.tech-num {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--bg-spine);
  width: 32px;
  flex-shrink: 0;
}
.tech-item-body h4 {
  font-size: 0.96rem;
  font-weight: 700;
  color: var(--text-ink);
  margin-bottom: 4px;
}
.tech-item-body p {
  font-size: 0.85rem;
  color: var(--text-body);
  line-height: 1.5;
}

/* ===================================================================
   7. 用户评价 review-grid (4.9/5 评分条 + 4张胸牌风格卡片)
   =================================================================== */
.review-summary-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border: 1.5px solid var(--border-light);
  background-color: var(--bg-paper-tint);
  border-radius: var(--radius-spec);
  padding: 12px 18px;
  margin-bottom: 16px;
}
.score-big {
  font-family: var(--font-mono);
  font-size: 1.85rem;
  font-weight: 800;
  color: var(--bg-spine);
}
.stars-row {
  color: var(--border-amber);
  margin-left: 8px;
  display: inline-flex;
}
.review-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}
.review-card {
  border: 1.5px solid var(--border-light);
  background-color: var(--bg-card);
  border-radius: var(--radius-spec);
  padding: 16px;
}
.reviewer-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.rev-avatar {
  width: 34px;
  height: 34px;
  border-radius: var(--radius-spec);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  color: #ffffff;
}
.a1 { background-color: var(--bg-spine); }
.a2 { background-color: #9d2553; }
.a3 { background-color: var(--border-amber); }
.a4 { background-color: #3f2a57; }

.rev-meta h5 {
  font-size: 0.92rem;
  color: var(--text-ink);
  font-weight: 700;
}
.rev-meta span {
  font-size: 0.72rem;
  color: var(--text-muted);
}
.rev-quote {
  font-size: 0.88rem;
  color: var(--text-body);
  line-height: 1.5;
  margin-bottom: 10px;
}
.rev-footer {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
  border-top: 1px solid var(--border-light);
  padding-top: 6px;
}

/* ===================================================================
   8. 认证背书 trust-grid (4张信任卡)
   =================================================================== */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}
.trust-card {
  border: 1.5px solid var(--border-light);
  background-color: var(--bg-card);
  border-radius: var(--radius-spec);
  padding: 14px 10px;
  text-align: center;
}
.trust-icon {
  margin-bottom: 8px;
  color: var(--bg-spine);
}
.trust-card h5 {
  font-size: 0.88rem;
  color: var(--text-ink);
  margin-bottom: 4px;
  font-weight: 700;
}
.trust-card p {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ===================================================================
   9. 对比表 cmp-table (4列 × 8行表格，自家产品列用 .hl 高亮)
   =================================================================== */
.cmp-table-wrap {
  overflow-x: auto;
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-spec);
}
.cmp-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}
.cmp-table th, .cmp-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border-light);
}
.cmp-table th {
  background-color: var(--bg-paper-tint);
  color: var(--text-ink);
  font-weight: 700;
  font-family: var(--font-mono);
}
.cmp-table td {
  background-color: #ffffff;
  color: var(--text-body);
}
.cmp-table .hl {
  background-color: var(--bg-wash) !important;
  color: var(--bg-spine);
  font-weight: 800;
  border-left: 2px solid var(--bg-spine);
  border-right: 2px solid var(--bg-spine);
}
.cmp-table tr:last-child td {
  border-bottom: none;
}
.cmp-disclaimer {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 8px;
  font-family: var(--font-mono);
}

/* ===================================================================
   10. FAQ faq-list (手风琴交互单开排他)
   =================================================================== */
.faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.faq-item {
  border: 1.5px solid var(--border-light);
  background-color: #ffffff;
  border-radius: var(--radius-spec);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  padding: 14px 16px;
  background: none;
  border: none;
  color: var(--text-ink);
  font-size: 0.95rem;
  font-weight: 700;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.faq-icon-arrow {
  transition: transform 0.2s ease;
  color: var(--bg-spine);
  flex-shrink: 0;
}
.faq-item.active .faq-icon-arrow {
  transform: rotate(180deg);
}
.faq-answer {
  display: none;
  padding: 0 16px 14px 16px;
  font-size: 0.88rem;
  color: var(--text-body);
  line-height: 1.6;
  border-top: 1px dashed var(--border-light);
  padding-top: 10px;
}
.faq-item.active .faq-answer {
  display: block;
}

/* ===================================================================
   11. CTA 横幅 cta-band
   =================================================================== */
.cta-band {
  background-color: var(--bg-paper-tint);
  border: 1.5px solid var(--border-amber);
  text-align: center;
}
.cta-band h3 {
  font-size: 1.6rem;
  color: var(--text-ink);
  font-weight: 800;
  margin-bottom: 8px;
}
.cta-band p {
  font-size: 0.95rem;
  color: var(--text-body);
  margin-bottom: 18px;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
}
.cta-band-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* ===================================================================
   12. 页脚 site-footer
   =================================================================== */
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: 24px;
  padding-bottom: 20px;
  border-bottom: 1.5px solid var(--border-light);
}
.footer-brand h4 {
  font-size: 1.1rem;
  color: var(--text-ink);
  margin-bottom: 6px;
  font-weight: 800;
}
.footer-brand p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.5;
}
.footer-col h5 {
  font-size: 0.88rem;
  color: var(--bg-spine);
  font-family: var(--font-mono);
  margin-bottom: 10px;
  text-transform: uppercase;
  font-weight: 700;
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.footer-links a {
  color: var(--text-body);
  text-decoration: none;
  font-size: 0.82rem;
}
.footer-links a:hover {
  color: var(--bg-spine);
}

.footer-seo {
  padding: 14px 0;
  border-bottom: 1.5px solid var(--border-light);
  font-size: 0.78rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.footer-seo strong {
  color: var(--text-ink);
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 12px;
  font-size: 0.74rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* 页面内图文展示 */
.showcase-visual {
  border: 1.5px solid var(--border-light);
  border-radius: var(--radius-spec);
  overflow: hidden;
  background-color: #ffffff;
  margin-top: 14px;
}
.showcase-visual img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ===================================================================
   响应式调整
   =================================================================== */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .feature-grid {
    grid-template-columns: 1fr 1fr;
  }
  .platform-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .tech-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .page-outer-ring {
    padding: 12px 2%;
  }
  .canton-card {
    padding-left: 38px;
  }
  .canton-spine {
    width: 28px;
  }
  .main-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: #ffffff;
    border: 1.5px solid var(--border-amber);
    border-radius: var(--radius-spec);
    flex-direction: column;
    padding: 12px;
    z-index: 100;
  }
  .main-nav.open {
    display: flex;
  }
  .nav-toggle {
    display: block;
  }
  .feature-grid {
    grid-template-columns: 1fr;
  }
  .platform-grid {
    grid-template-columns: 1fr 1fr;
  }
  .review-grid {
    grid-template-columns: 1fr;
  }
  .trust-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}