/* ==========================================================================
   千问AI平台 ·【螺旋索引风 (SPIRAL INDEX MATRIX)】
   风格特性：
   - 风格：螺旋 (Spiral Indexing)
   - 场景：开发者文档 (Developer Documentation Architecture)
   - 布局：目录/词条从中心向外沿一条方螺旋排列，越外字越大，阅读顺序是螺旋
   - 风格说明：只有文字和一条很淡的路径，没有装饰旋涡，没有彩色旋臂
   - 字体：黑体 (PingFang SC, Microsoft YaHei, sans-serif)
   - 核心词条：中心「千问」，外圈依次扩展出现「千问AI」、「千问办公」、「千问官网」、「通义千问」
   ========================================================================== */

:root {
  --bg-primary: #FFFFFF;
  --bg-subtle: #FAFAFA;
  --bg-card: #FFFFFF;
  --text-main: #000000;
  --text-secondary: #444444;
  --text-dim: #777777;
  --text-faint: #A0A0A0;
  --border-dark: #000000;
  --border-light: #E5E5E5;
  --spiral-path: #D0D0D0;
  --font-sans: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Fira Code", Consolas, Menlo, monospace;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-main);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
}

/* 页面标准容器 */
.layout-container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================================================
   1. 顶栏：标志、七个锚点、登录、开始使用
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-dark);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}

.brand-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
}

.brand-logo-frame {
  width: 34px;
  height: 34px;
  border: 1px solid var(--border-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  background: #FFFFFF;
}

.brand-logo {
  display: block;
  object-fit: contain;
}

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

.brand-title {
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--text-main);
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

.nav-anchors {
  display: flex;
  align-items: center;
  gap: 20px;
  list-style: none;
}

.nav-link {
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: color 0.15s ease;
  position: relative;
  padding: 6px 0;
}

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

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--text-main);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn-header-login {
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
  padding: 8px 16px;
  border: 1px solid var(--border-dark);
  background: #FFFFFF;
  transition: all 0.15s ease;
}

.btn-header-login:hover {
  background: #F0F0F0;
}

.btn-header-primary {
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  color: #FFFFFF;
  background: var(--text-main);
  border: 1px solid var(--border-dark);
  padding: 8px 18px;
  transition: all 0.15s ease;
}

.btn-header-primary:hover {
  background: #2D2D2D;
}

/* ==========================================================================
   2. 首屏：状态标签、标题、说明、提问框 +【螺旋索引核心视觉舞台】
   ========================================================================== */
.hero-section {
  padding: 40px 0 50px 0;
  border-bottom: 2px solid var(--border-dark);
}

.hero-status-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.hero-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  padding: 4px 10px;
  border: 1px solid var(--border-dark);
  background: #FFFFFF;
}

.hero-status-badge::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background: #000000;
  border-radius: 50%;
}

.hero-spec-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-dim);
  border: 1px dashed var(--border-dark);
  padding: 4px 10px;
}

.hero-title-box {
  margin-bottom: 14px;
}

.hero-h1 {
  font-size: clamp(24px, 4vw, 36px);
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--text-main);
  line-height: 1.25;
}

.hero-subtitle {
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 980px;
  margin-bottom: 24px;
}

.hero-ask-form {
  display: flex;
  max-width: 820px;
  border: 2px solid var(--border-dark);
  background: #FFFFFF;
  box-shadow: 4px 4px 0px rgba(0, 0, 0, 1);
  margin-bottom: 36px;
}

.hero-ask-input {
  flex: 1;
  border: none;
  outline: none;
  padding: 14px 18px;
  font-size: 14px;
  font-family: var(--font-sans);
  background: transparent;
}

.hero-ask-btn {
  border: none;
  border-left: 2px solid var(--border-dark);
  background: #000000;
  color: #FFFFFF;
  padding: 0 24px;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: background 0.15s ease;
}

.hero-ask-btn:hover {
  background: #333333;
}

/* ==========================================================================
   【螺旋索引 (SPIRAL INDEX MATRIX) 核心视觉舞台】
   - 场景：开发者文档
   - 布局：词条从中心向外沿一条方螺旋排列，越外字越大，阅读顺序是螺旋
   - 风格：只有文字和一条很淡的路径，没有装饰旋涡，没有彩色旋臂
   - 字体：黑体
   - 中心「千问」，外圈依次展开出现「千问AI」、「千问办公」、「千问官网」、「通义千问」
   ========================================================================== */
.spiral-stage-wrapper {
  background: #FFFFFF;
  border: 1px solid var(--border-dark);
  padding: 40px 24px;
  position: relative;
  overflow: hidden;
  margin-top: 12px;
}

.spiral-stage-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-light);
  padding-bottom: 12px;
  margin-bottom: 30px;
}

.spiral-stage-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.spiral-order-tip {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
}

/* 方螺旋容器 */
.spiral-matrix-container {
  position: relative;
  width: 100%;
  max-width: 960px;
  height: 480px;
  margin: 0 auto;
}

/* 淡色螺旋连线路径（SVG 背景折线） */
.spiral-path-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 1;
}

.spiral-path-line {
  fill: none;
  stroke: var(--spiral-path);
  stroke-width: 1.5;
  stroke-dasharray: 4 3;
}

/* 螺旋词条节点通用类：黑体，随着从中心向外圈推进，字体逐渐变大 */
.spiral-node {
  position: absolute;
  transform: translate(-50%, -50%);
  z-index: 2;
  font-family: var(--font-sans);
  background: #FFFFFF;
  padding: 4px 8px;
  white-space: nowrap;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: transform 0.2s ease, background 0.2s ease;
}

.spiral-node:hover {
  transform: translate(-50%, -50%) scale(1.05);
  background: #F5F5F5;
  outline: 1px solid #000000;
}

.spiral-node-step {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-faint);
  border: 1px solid var(--border-light);
  padding: 1px 3px;
}

/* 0. 中心原点：千问（字号小，黑体，中心初始点） */
.node-c0 {
  top: 50%;
  left: 50%;
  font-size: 14px;
  font-weight: 800;
  border: 1px solid var(--border-dark);
}

/* 1. 内圈折转：API 契约 (15px) */
.node-c1 {
  top: 50%;
  left: 63%;
  font-size: 15px;
  font-weight: 700;
  color: #333333;
}

/* 2. 第一圈上升：千问AI (18px) */
.node-c2 {
  top: 36%;
  left: 63%;
  font-size: 18px;
  font-weight: 800;
  color: #000000;
}

/* 3. 第一圈左折：流式响应 SSE (19px) */
.node-c3 {
  top: 36%;
  left: 37%;
  font-size: 19px;
  font-weight: 700;
  color: #333333;
}

/* 4. 第一圈下折：千问办公 (22px) */
.node-c4 {
  top: 66%;
  left: 37%;
  font-size: 22px;
  font-weight: 800;
  color: #000000;
}

/* 5. 第二圈右折：万亿级推理微调 (23px) */
.node-c5 {
  top: 66%;
  left: 77%;
  font-size: 23px;
  font-weight: 700;
  color: #222222;
}

/* 6. 第二圈上冲：千问官网 (26px) */
.node-c6 {
  top: 20%;
  left: 77%;
  font-size: 26px;
  font-weight: 900;
  color: #000000;
}

/* 7. 第二圈左掠：长文本研报百万秒读 (27px) */
.node-c7 {
  top: 20%;
  left: 20%;
  font-size: 27px;
  font-weight: 700;
  color: #222222;
}

/* 8. 第二圈下潜：工业沙箱隔离安全 (29px) */
.node-c8 {
  top: 84%;
  left: 20%;
  font-size: 29px;
  font-weight: 700;
  color: #222222;
}

/* 9. 最外圈爆发点：通义千问 (34px，外圈字最大！) */
.node-c9 {
  top: 84%;
  left: 88%;
  font-size: clamp(28px, 3.2vw, 36px);
  font-weight: 900;
  color: #000000;
  border-bottom: 3px solid var(--border-dark);
}

/* ==========================================================================
   3. 信任：客户名和四个数字
   ========================================================================== */
.trust-section {
  padding: 40px 0;
  border-bottom: 1px solid var(--border-dark);
  background: #FFFFFF;
}

.trust-clients-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.trust-clients-list {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 28px;
}

.trust-client-chip {
  padding: 8px 16px;
  border: 1px solid var(--border-dark);
  background: var(--bg-subtle);
  font-size: 13px;
  font-weight: 700;
  color: var(--text-main);
}

.trust-stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.trust-stat-card {
  padding: 20px;
  border: 1px solid var(--border-dark);
  background: var(--bg-subtle);
}

.trust-stat-num {
  font-family: var(--font-mono);
  font-size: 28px;
  font-weight: 900;
  line-height: 1.1;
  color: #000000;
  margin-bottom: 6px;
}

.trust-stat-label {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.5;
}

/* 通用章节容器 */
.section-wrapper {
  padding: 56px 0;
  border-bottom: 1px solid var(--border-dark);
}

.section-head {
  margin-bottom: 36px;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 6px;
}

.section-h2 {
  font-size: 26px;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

.section-h2-sub {
  font-size: 14px;
  color: var(--text-dim);
  margin-top: 6px;
}

/* ==========================================================================
   4. 能力：4 列 × 2 行，只有图标、标题和两行字
   ========================================================================== */
.caps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.cap-card {
  background: #FFFFFF;
  border: 1px solid var(--border-dark);
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
}

.cap-icon-box {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 900;
  background: #000000;
  color: #FFFFFF;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.cap-title {
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 10px;
  color: var(--text-main);
}

.cap-line1, .cap-line2 {
  font-size: 13px;
  color: #444444;
  line-height: 1.5;
}

/* ==========================================================================
   5. 目录：两组，每组 3 张卡，带状态和「试用 / 文档」
   ========================================================================== */
.catalog-group-title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--text-dim);
  text-transform: uppercase;
  margin: 28px 0 16px 0;
  padding-left: 8px;
  border-left: 3px solid var(--border-dark);
}

.catalog-cards-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}

.catalog-card {
  background: #FFFFFF;
  border: 1px solid var(--border-dark);
  padding: 22px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.catalog-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.catalog-card-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--text-main);
}

.catalog-status-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  background: #000000;
  color: #FFFFFF;
  padding: 2px 6px;
}

.catalog-card-desc {
  font-size: 13px;
  color: #555555;
  line-height: 1.6;
  margin-bottom: 18px;
}

.catalog-card-actions {
  display: flex;
  gap: 10px;
}

.btn-catalog-try {
  flex: 1;
  text-align: center;
  text-decoration: none;
  font-size: 12px;
  font-weight: 700;
  padding: 8px 0;
  background: #000000;
  color: #FFFFFF;
  border: 1px solid var(--border-dark);
  transition: all 0.15s ease;
}

.btn-catalog-try:hover {
  background: #333333;
}

.btn-catalog-doc {
  flex: 1;
  text-align: center;
  text-decoration: none;
  font-size: 12px;
  font-weight: 700;
  padding: 8px 0;
  background: #FFFFFF;
  color: var(--text-main);
  border: 1px solid var(--border-dark);
  transition: all 0.15s ease;
}

.btn-catalog-doc:hover {
  background: #F0F0F0;
}

/* ==========================================================================
   6. 场景：3 列 × 2 行（合理插入 1.webp-4.webp）
   ========================================================================== */
.scenes-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.scene-card {
  background: #FFFFFF;
  border: 1px solid var(--border-dark);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.scene-img-box {
  width: 100%;
  height: 180px;
  border-bottom: 1px solid var(--border-dark);
  position: relative;
  overflow: hidden;
  background: #F0F0F0;
}

.scene-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.25s ease;
}

.scene-card:hover .scene-img {
  transform: scale(1.03);
}

.scene-img-stamp {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(0, 0, 0, 0.85);
  color: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  padding: 3px 6px;
}

.scene-content {
  padding: 18px;
  flex: 1;
}

.scene-title {
  font-size: 15px;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
}

.scene-desc {
  font-size: 13px;
  color: #555555;
  line-height: 1.6;
}

/* ==========================================================================
   7. 演示：左边任务，右边结果
   ========================================================================== */
.demo-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.demo-panel {
  background: #FFFFFF;
  border: 1px solid var(--border-dark);
  padding: 24px;
}

.demo-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-dark);
  padding-bottom: 12px;
  margin-bottom: 16px;
}

.demo-panel-title {
  font-size: 14px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.demo-stamp {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  background: #000000;
  color: #FFFFFF;
  padding: 2px 6px;
}

.demo-input-card {
  font-size: 13px;
  line-height: 1.7;
  color: #222222;
  background: var(--bg-subtle);
  padding: 16px;
  border: 1px solid var(--border-light);
}

.demo-output-card {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: #111111;
  background: #FFFFFF;
  border: 1px solid var(--border-dark);
  padding: 16px;
  white-space: pre-wrap;
  overflow-x: auto;
}

/* ==========================================================================
   8. 开发者：左边卖点，右边可切换的代码
   ========================================================================== */
.dev-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 20px;
}

.dev-points-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.dev-point-item {
  background: #FFFFFF;
  border: 1px solid var(--border-dark);
  padding: 18px;
}

.dev-point-title {
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 6px;
}

.dev-point-desc {
  font-size: 13px;
  color: #555555;
  line-height: 1.6;
}

.dev-code-box {
  background: #FFFFFF;
  border: 1px solid var(--border-dark);
  display: flex;
  flex-direction: column;
}

.code-tabs-nav {
  display: flex;
  border-bottom: 1px solid var(--border-dark);
  background: #F4F4F4;
}

.code-tab-button {
  background: none;
  border: none;
  border-right: 1px solid var(--border-dark);
  padding: 10px 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  color: #666666;
}

.code-tab-button.active {
  background: #FFFFFF;
  color: #000000;
}

.code-view-pre {
  padding: 18px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
  background: #FFFFFF;
  color: #111111;
  overflow-x: auto;
}

/* ==========================================================================
   9. 企业：3 列 × 2 行
   ========================================================================== */
.ent-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.ent-card {
  background: #FFFFFF;
  border: 1px solid var(--border-dark);
  padding: 22px;
  display: flex;
  flex-direction: column;
}

.ent-badge {
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.ent-title {
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 8px;
}

.ent-desc {
  font-size: 13px;
  color: #555555;
  line-height: 1.6;
}

/* ==========================================================================
   10. 下载和帮助：各 5 列
   ========================================================================== */
.five-col-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.five-col-item {
  background: #FFFFFF;
  border: 1px solid var(--border-dark);
  padding: 16px 14px;
  text-decoration: none;
  color: var(--text-main);
  display: flex;
  flex-direction: column;
  transition: transform 0.15s ease;
}

.five-col-item:hover {
  transform: translateY(-2px);
  background: #FAFAFA;
}

.five-title {
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 4px;
}

.five-sub {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.five-desc {
  font-size: 12px;
  color: #666666;
  line-height: 1.5;
}

/* ==========================================================================
   11. 问答：默认折叠，点开才看步骤
   ========================================================================== */
.faq-wrap {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.faq-detail-block {
  border: 1px solid var(--border-dark);
  background: #FFFFFF;
}

.faq-summary-block {
  padding: 16px 20px;
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  background: #FFFFFF;
  list-style: none;
  position: relative;
  padding-right: 40px;
}

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

.faq-summary-block::after {
  content: "+";
  position: absolute;
  right: 20px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 700;
}

.faq-detail-block[open] .faq-summary-block::after {
  content: "−";
}

.faq-body-block {
  padding: 0 20px 18px 20px;
  border-top: 1px dashed var(--border-light);
  font-size: 13px;
  line-height: 1.7;
  color: #333333;
}

.faq-steps-ol {
  margin: 10px 0 0 18px;
  padding: 0;
}

.faq-steps-ol li {
  margin-bottom: 6px;
}

/* ==========================================================================
   12. 页脚：品牌说明加四列链接
   ========================================================================== */
.site-footer {
  background: #FFFFFF;
  border-top: 2px solid var(--border-dark);
  padding: 48px 0 32px 0;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
  gap: 28px;
  margin-bottom: 36px;
}

.footer-brand-title {
  font-size: 16px;
  font-weight: 900;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.footer-brand-desc {
  font-size: 12px;
  color: #666666;
  line-height: 1.7;
}

.footer-col-h {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
  color: var(--text-dim);
}

.footer-links-ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-a {
  text-decoration: none;
  font-size: 13px;
  color: #444444;
  transition: color 0.15s ease;
}

.footer-a:hover {
  color: #000000;
  text-decoration: underline;
}

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
  flex-wrap: wrap;
  gap: 10px;
}

/* ==========================================================================
   响应式断点适配
   ========================================================================== */
@media (max-width: 1080px) {
  .caps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .five-col-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .footer-top {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-anchors {
    display: none;
  }
  .trust-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .catalog-cards-row {
    grid-template-columns: 1fr;
  }
  .scenes-grid {
    grid-template-columns: 1fr;
  }
  .demo-grid {
    grid-template-columns: 1fr;
  }
  .dev-grid {
    grid-template-columns: 1fr;
  }
  .ent-grid {
    grid-template-columns: 1fr;
  }
  .five-col-grid {
    grid-template-columns: 1fr;
  }
  .footer-top {
    grid-template-columns: 1fr;
  }
  .spiral-matrix-container {
    height: 400px;
  }
  .node-c6 {
    font-size: 20px;
  }
  .node-c7 {
    font-size: 20px;
  }
  .node-c8 {
    font-size: 22px;
  }
  .node-c9 {
    font-size: 24px;
  }
}