/* ==========================================================================
   Shadowrocket 小火箭 - 最终版71 样式表
   设计风格：约翰内斯堡矿票 (Johannesburg Mine Ticket / Shaft Pass)
   版式规格：A4 印刷竖版，只留天不留地 (Top 7.5%, Bottom 0, Left/Right 7.5%)
   模块间隙：12pt (16px)，安全边 7.5%
   底部 28% 实心底栏承载标题，主标题占幅 28%，参差错位两级
   设计材质：热敏纸黑白反差 (Thermal Paper High-Contrast)
   装饰规则：装饰只出现在中缝 (Perforated Seam & Stamp ONLY at the Center Gutter)
   禁忌规范：禁止渐变与投影 (NO Gradients, NO Box-Shadows)
   圆角规范：严格统一执行 20px 12px 10px 14px
   色彩方案：晨雾晴空 (色相约 191° #1BA2C0 / #E6F3F7)、砖色青紫 (#9A2CB6 / #6A6990 / #9E3A2B)、铅笔灰 (#24282F / #4A515E)
   ========================================================================== */

:root {
  /* 约翰内斯堡矿票色谱 */
  --thermal-bg: #EEF4F7;           /* 晨雾晴空热敏纸中性底色 (色相约 191°) */
  --thermal-sheet: #FAFDFE;        /* 热敏卡纸纯白票面 */
  --thermal-ink: #11151A;          /* 深度热敏显墨黑 */
  --pencil-lead-dark: #24282F;     /* 铅笔灰深色 */
  --pencil-lead-muted: #58616E;    /* 铅笔灰次级说明 */
  --thermal-border: #8D99A8;       /* 矿票边缘穿孔打孔色 */
  --thermal-grid-line: #D0DCE5;    /* 票证轻量网格线 */

  /* 核心主题色彩 */
  --sky-clear: #1BA2C0;            /* 晴空青色 (色相约 191°) */
  --sky-mist: #D7ECF2;             /* 晨雾淡青 */
  --cyan-purple: #9A2CB6;          /* 参考色：青紫 */
  --brick-slate: #6A6990;          /* 参考色：青紫板岩灰 */
  --brick-mine: #A33B2B;           /* 砖色矿石印记 */
  --shaft-valid: #1B7A43;          /* 下井许可有效绿 */

  /* 尺度与规格标准 */
  --radius-ticket: 20px 12px 10px 14px; /* 指定圆角：20 / 12 / 10 / 14 */
  --module-gap: 16px;                   /* 模块间隙 12pt = 16px */
  --safe-edge: 7.5%;                    /* 安全边 7.5% */
  --title-width: 28%;                   /* 主标题占幅 28% */

  /* 字体家族 */
  --font-ticket-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-ticket-mono: "Courier New", "Consolas", "SFMono-Regular", monospace;
}

/* 基础重置：杜绝任何投影与渐变 */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  box-shadow: none !important;
  text-shadow: none !important;
}

html {
  font-size: 15px;
  background-color: var(--thermal-bg);
  color: var(--thermal-ink);
  font-family: var(--font-ticket-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--thermal-bg);
  min-height: 100vh;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ==========================================================================
   页面主版式：A4 印刷竖版感，只留天不留地 (Top 7.5%, Bottom 0, Left/Right 7.5%)
   ========================================================================== */
.page-wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  /* 只留天不留地：顶部留天 7.5%，左右 7.5%，底部完全为 0 */
  padding: var(--safe-edge) var(--safe-edge) 0 var(--safe-edge);
}

/* 矿票卡片基本结构：热敏纸黑白高反差 + 指定圆角 */
.ticket-card {
  background-color: var(--thermal-sheet);
  border: 2px solid var(--pencil-lead-dark);
  border-radius: var(--radius-ticket);
  margin-bottom: var(--module-gap);
  padding: 18px 22px;
  position: relative;
}

/* 装饰只出现在中缝：矿票撕裂打孔中缝线与票证核验标记 */
.center-seam-deco {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 2px dashed var(--thermal-border);
  border-bottom: 2px dashed var(--thermal-border);
  background-color: var(--sky-mist);
  padding: 6px 14px;
  margin: 14px -22px;
  font-family: var(--font-ticket-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--cyan-purple);
  letter-spacing: 1.2px;
}

.center-seam-deco .seam-perforation {
  color: var(--brick-mine);
  letter-spacing: 3px;
  font-weight: 900;
}

/* 参差错位两级 (Staggered Layout) */
.stagger-container-2level {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 20px;
  align-items: flex-start;
}

.stagger-col-left {
  /* 第一级基准 */
  margin-top: 0;
}

.stagger-col-right {
  /* 第二级参差错位：下移 16px */
  margin-top: 16px;
}

/* ==========================================================================
   1. 顶部导航 site-header
   ========================================================================== */
.site-header {
  background-color: var(--thermal-sheet);
  border: 2px solid var(--pencil-lead-dark);
  border-radius: var(--radius-ticket);
  padding: 12px 20px;
  margin-bottom: var(--module-gap);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.brand-group {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-pass-badge {
  width: 38px;
  height: 38px;
  background-color: var(--pencil-lead-dark);
  color: #FFFFFF;
  border-radius: var(--radius-ticket);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--sky-clear);
}

.brand-meta-block {
  display: flex;
  flex-direction: column;
}

.brand-title-text {
  font-size: 16px;
  font-weight: 900;
  color: var(--thermal-ink);
  line-height: 1.2;
}

.brand-sub-badge {
  font-size: 10px;
  font-family: var(--font-ticket-mono);
  color: var(--cyan-purple);
  font-weight: 800;
  letter-spacing: 1px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-link {
  font-size: 13px;
  font-weight: 700;
  color: var(--pencil-lead-dark);
  padding: 4px 6px;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  color: var(--cyan-purple);
  border-bottom-color: var(--cyan-purple);
}

.nav-cta-btn {
  background-color: var(--pencil-lead-dark);
  color: #FFFFFF;
  font-size: 12px;
  font-weight: 800;
  padding: 8px 18px;
  border-radius: var(--radius-ticket);
  border: 1px solid var(--pencil-lead-dark);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.nav-cta-btn:hover {
  background-color: var(--cyan-purple);
  border-color: var(--cyan-purple);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--pencil-lead-dark);
  padding: 6px;
  border-radius: var(--radius-ticket);
  cursor: pointer;
}

/* ==========================================================================
   2. Hero 区：骨架：徽章关键词 / 主标题 / 风险提示一行；
      关键词植入「小火箭加速器」；断行策略：年份后置；信息点数量 2；
      底部 28% 实心底栏承载标题，主标题占幅 28%
   ========================================================================== */
.hero-skeleton-wrap {
  margin-bottom: 14px;
}

/* 徽章关键词 */
.hero-badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background-color: var(--sky-mist);
  color: var(--pencil-lead-dark);
  border: 1px solid var(--sky-clear);
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 800;
  border-radius: var(--radius-ticket);
  font-family: var(--font-ticket-mono);
  margin-bottom: 10px;
}

/* 信息点数量 2：严格控制为 2 个高价值数据点 */
.hero-2points-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-bottom: 10px;
}

.hero-point-card {
  background-color: #FFFFFF;
  border: 1px solid var(--thermal-border);
  padding: 8px 12px;
  border-radius: var(--radius-ticket);
  border-left: 4px solid var(--cyan-purple);
}

.hero-point-title {
  font-size: 12px;
  font-weight: 800;
  color: var(--thermal-ink);
  margin-bottom: 2px;
}

.hero-point-desc {
  font-size: 11px;
  color: var(--pencil-lead-muted);
}

/* 风险提示一行 */
.risk-warning-singleline {
  background-color: #FFF6F5;
  border: 1px solid var(--brick-mine);
  color: var(--brick-mine);
  font-size: 11px;
  font-weight: 700;
  padding: 6px 12px;
  border-radius: var(--radius-ticket);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
}

/* 底部 28% 实心底栏承载标题，主标题占幅 28% */
.hero-bottom-solid-bar {
  min-height: 28%;
  background-color: var(--pencil-lead-dark);
  color: #FFFFFF;
  padding: 18px 20px;
  border-radius: var(--radius-ticket);
  border-left: 6px solid var(--cyan-purple);
  margin-top: 14px;
}

.hero-main-title {
  font-size: 20px;
  font-weight: 900;
  line-height: 1.35;
  color: #FFFFFF;
  margin-bottom: 8px;
}

.hero-main-title .year-tail {
  font-family: var(--font-ticket-mono);
  color: var(--sky-clear);
  font-size: 18px;
}

.hero-sub-copy {
  font-size: 12px;
  color: #D3DBE5;
  line-height: 1.6;
  margin-bottom: 14px;
}

/* 4 条带对勾卖点 */
.hero-checklist-4 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 14px;
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: #F0F4F8;
}

.check-svg {
  color: var(--sky-clear);
  flex-shrink: 0;
}

/* 双按钮 */
.hero-actions-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.btn-primary {
  background-color: var(--sky-clear);
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 800;
  padding: 9px 20px;
  border-radius: var(--radius-ticket);
  border: 1px solid var(--sky-clear);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-primary:hover {
  background-color: #15839C;
}

.btn-secondary {
  background-color: transparent;
  color: #FFFFFF;
  font-size: 13px;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: var(--radius-ticket);
  border: 1px solid #7D8B9C;
}

.btn-secondary:hover {
  border-color: #FFFFFF;
}

.hero-platform-specs {
  font-size: 10px;
  font-family: var(--font-ticket-mono);
  color: #9DAEC2;
}

/* Hero 右侧：纯 CSS/SVG 模拟客户端界面 (mock-window) */
.mock-window-box {
  background-color: #FFFFFF;
  border: 2px solid var(--pencil-lead-dark);
  border-radius: var(--radius-ticket);
  padding: 14px;
}

.mock-ticket-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--thermal-grid-line);
  padding-bottom: 6px;
  margin-bottom: 10px;
  font-family: var(--font-ticket-mono);
  font-size: 11px;
  font-weight: 800;
}

.mock-status-band {
  background-color: var(--sky-mist);
  border: 1px solid var(--thermal-border);
  padding: 8px 10px;
  border-radius: var(--radius-ticket);
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.mock-indicator-tag {
  background-color: var(--shaft-valid);
  color: #FFFFFF;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: var(--radius-ticket);
  font-weight: 800;
}

.mock-svg-graph {
  width: 100%;
  height: 90px;
  background-color: #F8FBFC;
  border: 1px solid var(--thermal-grid-line);
  border-radius: var(--radius-ticket);
  margin-bottom: 10px;
}

.mock-node-table {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.mock-node-entry {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 8px;
  font-size: 11px;
  border: 1px solid var(--thermal-grid-line);
  border-radius: var(--radius-ticket);
  background-color: #FFFFFF;
}

.mock-node-entry.active-node {
  background-color: #F5EAF9;
  border-color: var(--cyan-purple);
  font-weight: 800;
}

.mock-ping-label {
  font-family: var(--font-ticket-mono);
  color: var(--shaft-valid);
  font-weight: 800;
}

/* 两个浮动数据卡片 */
.kpi-dual-band {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 10px;
}

.kpi-ticket-item {
  background-color: var(--thermal-sheet);
  border: 1px solid var(--pencil-lead-dark);
  padding: 8px 10px;
  border-radius: var(--radius-ticket);
}

.kpi-num-display {
  font-family: var(--font-ticket-mono);
  font-size: 18px;
  font-weight: 900;
  color: var(--cyan-purple);
}

.kpi-caption {
  font-size: 10px;
  color: var(--pencil-lead-muted);
}

/* 纯色图片展示规范 (1.webp, 2.webp, 3.webp, 4.webp) */
.ticket-showcase-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-ticket);
  border: 1px solid var(--thermal-border);
  display: block;
}

/* ==========================================================================
   3. 平台入口带 platform-strip (Win/macOS/iOS/Android/Linux)
   ========================================================================== */
.platform-strip-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 10px;
}

.platform-pass-card {
  background-color: #FFFFFF;
  border: 1px solid var(--thermal-border);
  border-top: 4px solid var(--pencil-lead-dark);
  border-radius: var(--radius-ticket);
  padding: 12px 10px;
  text-align: center;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.platform-pass-card:hover {
  border-top-color: var(--cyan-purple);
  background-color: #FDF9FE;
}

.platform-icon-box {
  width: 32px;
  height: 32px;
  margin-bottom: 6px;
  color: var(--pencil-lead-dark);
}

.platform-card-name {
  font-size: 13px;
  font-weight: 900;
  color: var(--thermal-ink);
  margin-bottom: 2px;
}

.platform-card-req {
  font-size: 10px;
  color: var(--pencil-lead-muted);
  margin-bottom: 4px;
}

.platform-card-ver {
  font-size: 9px;
  font-family: var(--font-ticket-mono);
  background-color: var(--sky-mist);
  color: var(--pencil-lead-dark);
  padding: 2px 6px;
  border-radius: var(--radius-ticket);
  font-weight: 800;
}

/* ==========================================================================
   4. 数据速览 stats-band：4 格大数字
   ========================================================================== */
.stats-manifest-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.stat-entry-box {
  background-color: #FFFFFF;
  border: 1px solid var(--thermal-border);
  border-left: 4px solid var(--sky-clear);
  padding: 14px 12px;
  text-align: center;
  border-radius: var(--radius-ticket);
}

.stat-number-val {
  font-family: var(--font-ticket-mono);
  font-size: 24px;
  font-weight: 900;
  color: var(--pencil-lead-dark);
  margin-bottom: 2px;
}

.stat-title-label {
  font-size: 11px;
  color: var(--pencil-lead-muted);
  font-weight: 700;
}

/* ==========================================================================
   5. 六大能力 feature-grid：3 列卡片网格
   ========================================================================== */
.section-headline-group {
  margin-bottom: 14px;
  border-bottom: 2px solid var(--pencil-lead-dark);
  padding-bottom: 6px;
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
}

.section-mono-tag {
  font-family: var(--font-ticket-mono);
  font-size: 10px;
  font-weight: 800;
  color: var(--cyan-purple);
  letter-spacing: 1.5px;
}

.section-main-heading {
  font-size: 18px;
  font-weight: 900;
  color: var(--thermal-ink);
}

.feature-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.feature-ticket-box {
  background-color: #FFFFFF;
  border: 1px solid var(--thermal-border);
  padding: 14px;
  border-radius: var(--radius-ticket);
}

.feat-heading-row {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.feat-glyph-stamp {
  width: 26px;
  height: 26px;
  background-color: var(--sky-mist);
  color: var(--pencil-lead-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-ticket);
  border: 1px solid var(--thermal-border);
}

.feat-title-text {
  font-size: 14px;
  font-weight: 900;
  color: var(--thermal-ink);
}

.feat-problem-solve {
  font-size: 10px;
  font-weight: 800;
  color: var(--brick-mine);
  margin-bottom: 6px;
  display: block;
}

.feat-body-text {
  font-size: 11px;
  color: var(--pencil-lead-muted);
  line-height: 1.5;
}

/* ==========================================================================
   6. 工作原理 tech-grid：双栏技术解释块 (01/02)
   ========================================================================== */
.tech-explainer-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.tech-panel-card {
  background-color: #FFFFFF;
  border: 1px solid var(--thermal-border);
  border-top: 4px solid var(--cyan-purple);
  padding: 14px;
  border-radius: var(--radius-ticket);
}

.tech-panel-title {
  font-size: 15px;
  font-weight: 900;
  color: var(--thermal-ink);
  margin-bottom: 10px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.tech-step-row {
  display: flex;
  gap: 10px;
  margin-bottom: 10px;
}

.tech-index-num {
  font-family: var(--font-ticket-mono);
  font-size: 14px;
  font-weight: 900;
  color: var(--cyan-purple);
}

.tech-step-detail h4 {
  font-size: 12px;
  font-weight: 800;
  color: var(--thermal-ink);
  margin-bottom: 2px;
}

.tech-step-detail p {
  font-size: 11px;
  color: var(--pencil-lead-muted);
  line-height: 1.45;
}

/* ==========================================================================
   7. 用户评价 review-grid：4.9/5 顶部条 + 4 张评价卡
   ========================================================================== */
.review-score-strip {
  background-color: #FFFFFF;
  border: 1px solid var(--thermal-border);
  padding: 10px 14px;
  border-radius: var(--radius-ticket);
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.rating-badge-block {
  font-family: var(--font-ticket-mono);
  font-size: 18px;
  font-weight: 900;
  color: #FFFFFF;
  background-color: var(--pencil-lead-dark);
  padding: 2px 8px;
  border-radius: var(--radius-ticket);
}

.review-stars-visual {
  color: var(--sky-clear);
  letter-spacing: 2px;
}

.review-card-columns {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.user-testimonial-card {
  background-color: #FFFFFF;
  border: 1px solid var(--thermal-border);
  padding: 12px 10px;
  border-radius: var(--radius-ticket);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.user-meta-header {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
}

.avatar-letter-chip {
  width: 26px;
  height: 26px;
  border-radius: var(--radius-ticket);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 11px;
  color: #FFFFFF;
}

.a1 { background-color: var(--pencil-lead-dark); }
.a2 { background-color: var(--cyan-purple); }
.a3 { background-color: var(--brick-mine); }
.a4 { background-color: #177D8A; }

.user-meta-header h4 {
  font-size: 11px;
  font-weight: 800;
  color: var(--thermal-ink);
}

.user-role-label {
  font-size: 9px;
  color: var(--pencil-lead-muted);
}

.user-quote-body {
  font-size: 10px;
  color: var(--pencil-lead-dark);
  line-height: 1.45;
  margin-bottom: 8px;
}

.user-audit-time {
  font-size: 9px;
  font-family: var(--font-ticket-mono);
  color: var(--pencil-lead-muted);
  border-top: 1px dashed var(--thermal-grid-line);
  padding-top: 4px;
}

/* ==========================================================================
   8. 认证背书 trust-grid：4 张信任卡
   ========================================================================== */
.trust-manifest-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
}

.trust-badge-card {
  background-color: #FFFFFF;
  border: 1px solid var(--thermal-border);
  border-left: 3px solid var(--shaft-valid);
  padding: 10px;
  border-radius: var(--radius-ticket);
  display: flex;
  align-items: center;
  gap: 8px;
}

.trust-glyph {
  color: var(--shaft-valid);
  flex-shrink: 0;
}

.trust-heading {
  font-size: 12px;
  font-weight: 800;
  color: var(--thermal-ink);
}

.trust-detail {
  font-size: 9px;
  color: var(--pencil-lead-muted);
}

/* ==========================================================================
   9. 对比表 cmp-table：4 列 × 8 行表格
   ========================================================================== */
.matrix-scroll-wrapper {
  overflow-x: auto;
  border: 2px solid var(--pencil-lead-dark);
  border-radius: var(--radius-ticket);
  background-color: #FFFFFF;
}

.matrix-data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 11px;
  text-align: left;
}

.matrix-data-table th, .matrix-data-table td {
  padding: 8px 10px;
  border: 1px solid var(--thermal-grid-line);
}

.matrix-data-table th {
  background-color: #EDF3F7;
  font-weight: 900;
  color: var(--thermal-ink);
}

.matrix-data-table th.hl, .matrix-data-table td.hl {
  background-color: #F8EEFA;
  border-left: 2px solid var(--cyan-purple);
  border-right: 2px solid var(--cyan-purple);
  font-weight: 800;
  color: var(--cyan-purple);
}

.matrix-footer-notice {
  font-size: 9px;
  color: var(--pencil-lead-muted);
  padding: 6px 10px;
  background-color: #FAFBFD;
  border-top: 1px dashed var(--thermal-border);
}

/* ==========================================================================
   10. FAQ faq-list：手风琴交互
   ========================================================================== */
.faq-accordion-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.faq-ticket-item {
  border: 1px solid var(--thermal-border);
  border-radius: var(--radius-ticket);
  background-color: #FFFFFF;
}

.faq-header-toggle {
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 10px 14px;
  font-size: 12px;
  font-weight: 800;
  color: var(--thermal-ink);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}

.faq-arrow-glyph {
  font-size: 10px;
  color: var(--cyan-purple);
  transition: transform 0.2s ease;
}

.faq-ticket-item.open .faq-arrow-glyph {
  transform: rotate(180deg);
}

.faq-panel-body {
  display: none;
  padding: 0 14px 10px 14px;
  font-size: 11px;
  color: var(--pencil-lead-dark);
  line-height: 1.55;
  border-top: 1px dashed var(--thermal-grid-line);
}

.faq-ticket-item.open .faq-panel-body {
  display: block;
}

/* ==========================================================================
   11. CTA 横幅 cta-band
   ========================================================================== */
.cta-manifest-strip {
  background-color: var(--pencil-lead-dark);
  color: #FFFFFF;
  padding: 22px;
  border-radius: var(--radius-ticket);
  border: 2px solid var(--pencil-lead-dark);
  text-align: center;
}

.cta-large-heading {
  font-size: 18px;
  font-weight: 900;
  margin-bottom: 6px;
}

.cta-sub-explainer {
  font-size: 11px;
  color: #CBD5E1;
  margin-bottom: 14px;
}

.cta-btn-cluster {
  display: flex;
  justify-content: center;
  gap: 12px;
}

/* ==========================================================================
   12. 页脚 site-footer：只留天不留地，装饰只出现在中缝！
   ========================================================================== */
.site-footer {
  background-color: var(--thermal-sheet);
  border: 2px solid var(--pencil-lead-dark);
  border-bottom: none; /* 只留天不留地，贴底闭合 */
  border-radius: 20px 12px 0 0;
  padding: 18px 22px 14px 22px;
  margin-top: var(--module-gap);
}

.footer-nav-columns {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr 1fr;
  gap: 16px;
  margin-bottom: 14px;
}

.footer-section-title {
  font-size: 12px;
  font-weight: 900;
  color: var(--thermal-ink);
  margin-bottom: 8px;
}

.footer-link-group {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-link-group a {
  font-size: 10px;
  color: var(--pencil-lead-muted);
}

.footer-link-group a:hover {
  color: var(--cyan-purple);
}

.footer-seo-vault {
  background-color: #EDF3F7;
  border: 1px solid var(--thermal-border);
  padding: 8px 10px;
  font-size: 10px;
  color: var(--pencil-lead-dark);
  line-height: 1.5;
  border-radius: var(--radius-ticket);
  margin-bottom: 10px;
}

.footer-legal-bar {
  display: flex;
  justify-content: space-between;
  font-size: 9px;
  color: var(--pencil-lead-muted);
  border-top: 1px solid var(--thermal-grid-line);
  padding-top: 8px;
  font-family: var(--font-ticket-mono);
}

/* ==========================================================================
   下载页专用发布版面
   ========================================================================== */
.dl-voucher-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dl-voucher-card {
  background-color: #FFFFFF;
  border: 1px solid var(--thermal-border);
  border-left: 4px solid var(--pencil-lead-dark);
  border-radius: var(--radius-ticket);
  padding: 12px 14px;
}

.dl-voucher-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.dl-sha256-strip {
  background-color: #F1F6F9;
  padding: 6px 10px;
  border: 1px dashed var(--thermal-border);
  font-family: var(--font-ticket-mono);
  font-size: 10px;
  color: var(--thermal-ink);
  word-break: break-all;
  border-radius: var(--radius-ticket);
  margin-bottom: 8px;
}

.dl-setup-steps-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  font-size: 10px;
  color: var(--pencil-lead-dark);
}

/* ==========================================================================
   响应式媒体查询
   ========================================================================== */
@media (max-width: 900px) {
  .stagger-container-2level {
    grid-template-columns: 1fr;
  }
  .stagger-col-right {
    margin-top: 0;
  }
  .platform-strip-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .feature-cards-grid {
    grid-template-columns: 1fr;
  }
  .stats-manifest-grid, .review-card-columns, .trust-manifest-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-nav-columns {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .platform-strip-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-manifest-grid, .review-card-columns, .trust-manifest-grid {
    grid-template-columns: 1fr;
  }
  .nav-toggle {
    display: block;
  }
  .main-nav {
    display: none;
    width: 100%;
    flex-direction: column;
    padding-top: 10px;
    border-top: 1px dashed var(--thermal-border);
  }
  .main-nav.open {
    display: flex;
  }
  .hero-2points-grid, .hero-checklist-4 {
    grid-template-columns: 1fr;
  }
  .footer-nav-columns {
    grid-template-columns: 1fr;
  }
  .dl-setup-steps-2col {
    grid-template-columns: 1fr;
  }
}