/* ==========================================================================
   豆包全栈样式系统
   视觉风格：页脚上提风 · 深墨底 + 浅字链接列 · 压缩首屏条与上提全景导航矩阵
   ========================================================================== */

:root {
  /* 深墨底与浅字系统 */
  --ink-black: #0B0F19;
  --ink-deep: #111827;
  --ink-surface: #1F2937;
  --ink-card: #1E2538;
  --ink-border: rgba(255, 255, 255, 0.1);
  --ink-text-light: #E2E8F0;
  --ink-text-muted: #94A3B8;

  /* 核心行动与提效高光蓝 */
  --blue-primary: #2563EB;
  --blue-deep: #1D4ED8;
  --blue-glow: rgba(37, 99, 235, 0.35);
  --blue-surface: #EFF6FF;
  --blue-border: #BFDBFE;

  /* 浅色内容区与明亮背景 */
  --bg-page: #FAFBFD;
  --bg-card: #FFFFFF;
  --text-title: #0F172A;
  --text-body: #334155;
  --text-muted: #64748B;
  --text-light: #94A3B8;

  --border-light: #E2E8F0;
  --border-hover: #CBD5E1;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 18px;
  --radius-pill: 9999px;

  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 10px 24px -4px rgba(15, 23, 42, 0.08), 0 4px 10px -2px rgba(15, 23, 42, 0.03);
  --shadow-lg: 0 20px 36px -8px rgba(15, 23, 42, 0.14), 0 6px 16px -4px rgba(37, 99, 235, 0.1);
  --shadow-glow: 0 10px 25px -3px rgba(37, 99, 235, 0.4);

  --container-width: 1220px;
  --nav-height: 68px;
  --transition: all 0.26s cubic-bezier(0.16, 1, 0.3, 1);

  /* 同心圆环风 · 浅紫环+白圆心色彩体系 */
  --purple-brand: #7C3AED;
  --purple-deep: #6D28D9;
  --purple-light: #F5F3FF;
  --purple-surface: #EDE9FE;
  --purple-border: #DDD6FE;
  --purple-orbit: rgba(168, 85, 247, 0.4);
  --purple-glow: rgba(168, 85, 247, 0.22);
  --purple-pill: #8B5CF6;
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  scroll-behavior: smooth;
  background-color: var(--bg-page);
  color: var(--text-body);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  background-color: var(--bg-page);
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition);
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  outline: none;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* 1. 顶部导航栏 (Sticky Nav) */
.header-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

.header-container {
  max-width: var(--container-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand-logo-img {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  object-fit: cover;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

.brand-logo-text {
  font-size: 19px;
  font-weight: 800;
  color: var(--text-title);
  letter-spacing: -0.3px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.brand-badge {
  font-size: 11px;
  font-weight: 700;
  background: var(--blue-surface);
  color: var(--blue-primary);
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--blue-border);
}

.nav-links-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link-item {
  position: relative;
  font-size: 14.5px;
  font-weight: 500;
  color: var(--text-body);
  padding: 6px 0;
}

.nav-link-item::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 0;
  width: 0;
  height: 2px;
  background: var(--blue-primary);
  border-radius: 2px;
  transition: width 0.25s ease, transform 0.25s ease;
  transform: translateX(-50%);
}

.nav-link-item:hover {
  color: var(--blue-primary);
}

.nav-link-item:hover::after,
.nav-link-item.active::after {
  width: 100%;
}

.nav-actions-group {
  display: flex;
  align-items: center;
  gap: 18px;
}

.sub-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
}

.sub-link:hover {
  color: var(--blue-primary);
}

.btn-cta-pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--blue-primary);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-glow);
  transition: var(--transition);
}

.btn-cta-pill:hover {
  background: var(--blue-deep);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(37, 99, 235, 0.45);
}

/* 按钮通用 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: var(--blue-primary);
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 600;
  padding: 13px 28px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-glow);
  transition: var(--transition);
}

.btn-primary:hover {
  background: var(--blue-deep);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.45);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: #FFFFFF;
  color: var(--text-body);
  font-size: 15px;
  font-weight: 600;
  padding: 12px 26px;
  border-radius: var(--radius-pill);
  border: 1.5px solid #CBD5E1;
  transition: var(--transition);
}

.btn-ghost:hover {
  border-color: var(--blue-primary);
  color: var(--blue-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

/* 2. 首屏展示区 (Hero Section) · 页脚上提风下的紧凑压缩条格 */
.hero-section {
  padding: 48px 0 54px;
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, #FFFFFF 0%, #F1F5F9 100%);
  border-bottom: 1px solid var(--border-light);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
}

.pill-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 14px;
  background: #EFF6FF;
  border: 1px solid #BFDBFE;
  border-radius: var(--radius-pill);
  font-size: 13px;
  font-weight: 600;
  color: var(--blue-primary);
  margin-bottom: 16px;
}

.pulse-green-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulseGreen 2s infinite;
}

@keyframes pulseGreen {
  0% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(16, 185, 129, 0); }
  100% { box-shadow: 0 0 0 0 rgba(16, 185, 129, 0); }
}

.hero-title {
  font-size: 50px;
  line-height: 1.16;
  letter-spacing: -1.2px;
  font-weight: 900;
  color: var(--text-title);
  margin-bottom: 16px;
}

.text-gradient {
  background: linear-gradient(135deg, #1E40AF 0%, #2563EB 50%, #0284C7 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-subheadline {
  font-size: 17px;
  line-height: 1.65;
  color: #6B7280;
  max-width: 530px;
  margin-bottom: 26px;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.hero-trust-meta {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 13.5px;
  color: var(--text-muted);
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.trust-icon-check {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background: #DBEAFE;
  color: var(--blue-primary);
  border-radius: 50%;
  font-size: 11px;
  font-weight: 800;
}

/* 首屏右侧视觉卡片 (Chat Card / Dashboard Card) */
.hero-visual-card {
  background: #FFFFFF;
  border-radius: 20px;
  padding: 18px;
  box-shadow: 0 20px 40px -10px rgba(15, 23, 42, 0.1), 0 0 0 1px rgba(226, 232, 240, 0.8);
  position: relative;
}

.visual-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 12px;
  border-bottom: 1px solid #F1F5F9;
  margin-bottom: 14px;
}

.visual-window-dots {
  display: flex;
  gap: 6px;
}

.v-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.v-dot.red { background: #EF4444; }
.v-dot.yellow { background: #F59E0B; }
.v-dot.green { background: #10B981; }

.visual-status-tag {
  font-size: 12px;
  color: var(--blue-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 5px;
}

.hero-image-wrapper {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  margin-bottom: 14px;
}

.hero-image-wrapper img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.chat-artifact-bubble {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 13.5px;
  color: var(--text-body);
}

.chat-bubble-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 5px;
  font-size: 12px;
  color: var(--text-muted);
}

.chat-progress-bar {
  height: 6px;
  background: #E2E8F0;
  border-radius: 999px;
  overflow: hidden;
  margin-top: 8px;
}

.chat-progress-fill-blue {
  width: 94%;
  height: 100%;
  background: linear-gradient(90deg, #2563EB, #38BDF8);
  border-radius: 999px;
}

/* ==========================================================================
   特化核心：Fat Footer 上提成第二屏主体 (页脚上提风 · 深墨底+浅字链接列)
   ========================================================================== */
.fat-footer-hero-screen {
  background-color: var(--ink-black);
  color: #FFFFFF;
  padding: 80px 0 70px;
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.ink-glow-orb {
  position: absolute;
  top: -140px;
  left: 50%;
  transform: translateX(-50%);
  width: 850px;
  height: 480px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.26) 0%, rgba(11, 15, 25, 0) 70%);
  pointer-events: none;
}

.fat-header-banner {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 54px;
  position: relative;
  z-index: 2;
}

.fat-eyebrow {
  display: inline-block;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: #60A5FA;
  background: rgba(37, 99, 235, 0.15);
  border: 1px solid rgba(96, 165, 250, 0.3);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.fat-h2-title {
  font-size: 38px;
  font-weight: 900;
  color: #FFFFFF;
  letter-spacing: -0.8px;
  line-height: 1.25;
  margin-bottom: 14px;
}

.fat-desc {
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink-text-muted);
}

/* 上提的多列全景导航矩阵（深墨底+浅字链接列） */
.fat-columns-matrix {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 36px;
  position: relative;
  z-index: 2;
  margin-bottom: 50px;
}

.fat-brand-column {
  padding-right: 20px;
}

.fat-brand-badge-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
}

.fat-brand-lead-text {
  font-size: 14px;
  line-height: 1.7;
  color: #94A3B8;
  margin-bottom: 22px;
}

.fat-matrix-col-title {
  font-size: 15px;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 6px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.fat-links-vertical-list {
  list-style: none;
}

.fat-links-vertical-list li {
  margin-bottom: 12px;
}

.fat-nav-link {
  font-size: 13.5px;
  color: #CBD5E1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 4px 0;
  transition: var(--transition);
}

.fat-nav-link:hover {
  color: #60A5FA;
  transform: translateX(4px);
}

.fat-link-meta-tag {
  font-size: 10px;
  font-weight: 700;
  background: rgba(37, 99, 235, 0.25);
  color: #93C5FD;
  padding: 1px 6px;
  border-radius: 4px;
}

.fat-bottom-summary-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-top: 36px;
  border-top: 1px dashed rgba(255, 255, 255, 0.12);
  position: relative;
  z-index: 2;
}

.fat-summary-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 18px 20px;
}

.fat-summary-title {
  font-size: 14px;
  font-weight: 700;
  color: #F8FAFC;
  margin-bottom: 6px;
}

.fat-summary-text {
  font-size: 12.5px;
  line-height: 1.6;
  color: #94A3B8;
}

/* 3. 核心能力矩阵 (Bento Box Grid 4 列网格) */
.bento-section {
  padding: 90px 0;
  background-color: #FFFFFF;
}

.section-head-center {
  text-align: center;
  max-width: 720px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--blue-primary);
  background: var(--blue-surface);
  border: 1px solid var(--blue-border);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 14px;
}

.section-h2 {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-title);
  letter-spacing: -0.6px;
  line-height: 1.25;
  margin-bottom: 14px;
}

.section-desc {
  font-size: 16px;
  line-height: 1.65;
  color: var(--text-muted);
}

.bento-box-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
}

.bento-card {
  background: #FFFFFF;
  border: 1px solid #E8EDF5;
  border-radius: 18px;
  padding: 24px 20px;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.bento-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  border-color: var(--blue-border);
}

.bento-icon-container {
  width: 46px;
  height: 46px;
  border-radius: 12px;
  background: var(--blue-surface);
  border: 1px solid rgba(37, 99, 235, 0.15);
  color: var(--blue-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.bento-icon-container svg {
  width: 24px;
  height: 24px;
  stroke: var(--blue-primary);
}

.bento-card-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--text-title);
  margin-bottom: 8px;
}

.bento-card-desc {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 18px;
  flex-grow: 1;
}

.bento-card-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--blue-primary);
  transition: gap 0.2s ease;
}

.bento-card:hover .bento-card-link {
  gap: 10px;
}

/* 4. 深度工作流 (Dark Mode Showcase) */
.dark-section {
  padding: 96px 0;
  background-color: #080D1A;
  position: relative;
  overflow: hidden;
  color: #FFFFFF;
}

.dark-radial-glow {
  position: absolute;
  top: -160px;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 520px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.25) 0%, rgba(8, 13, 26, 0) 70%);
  pointer-events: none;
}

.dark-section .section-h2 {
  color: #FFFFFF;
}

.dark-section .section-desc {
  color: #94A3B8;
}

.flow-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 48px;
  position: relative;
}

.flow-step-card {
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-radius: var(--radius-lg);
  padding: 26px 20px;
  transition: var(--transition);
}

.flow-step-card:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(96, 165, 250, 0.5);
  transform: translateY(-4px);
}

.flow-step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--blue-primary) 0%, var(--blue-deep) 100%);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 18px;
  box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
}

.flow-step-title {
  font-size: 17px;
  font-weight: 700;
  color: #F8FAFC;
  margin-bottom: 8px;
}

.flow-step-desc {
  font-size: 13.5px;
  line-height: 1.6;
  color: #94A3B8;
}

/* 5. 场景/用例对比 (Tabs Showcase) */
.tabs-showcase-section {
  padding: 90px 0;
  background-color: var(--bg-page);
}

.tabs-controller {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.tab-pill-btn {
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  font-size: 14px;
  font-weight: 600;
  background: #FFFFFF;
  color: var(--text-body);
  border: 1px solid #E2E8F0;
  transition: var(--transition);
}

.tab-pill-btn:hover {
  border-color: var(--blue-border);
  color: var(--blue-primary);
}

.tab-pill-btn.active {
  background: var(--blue-primary);
  color: #FFFFFF;
  border-color: var(--blue-primary);
  box-shadow: var(--shadow-glow);
}

.tab-content-panel {
  display: none;
}

.tab-content-panel.active {
  display: block;
}

.split-box-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
  background: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: 20px;
  padding: 32px;
  box-shadow: var(--shadow-md);
}

.split-col-input {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  padding: 24px;
}

.split-col-output {
  background: var(--blue-surface);
  border: 1.5px solid var(--blue-border);
  border-radius: 14px;
  padding: 24px;
}

.split-col-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 700;
}

.split-col-input .split-col-header {
  color: #64748B;
}

.split-col-output .split-col-header {
  color: var(--blue-deep);
}

.bubble-text-preview {
  font-size: 14px;
  line-height: 1.68;
  color: var(--text-body);
}

.output-highlight-badge {
  display: inline-block;
  background: #DBEAFE;
  color: #1E40AF;
  font-size: 11px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  margin-bottom: 10px;
}

/* 6. 阶梯定价方案 (Pricing Table) · 阶梯礼台风：四层台阶从低到高，每阶站一个价位和对应权益 · 浅石阶+每阶递加深蓝 */
.pricing-section {
  padding: 90px 0;
  background-color: #FFFFFF;
  position: relative;
  overflow: hidden;
}

/* 阶梯礼台舞台底座与容器 */
.podium-stage-container {
  margin-top: 50px;
  position: relative;
}

.pricing-podium-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 22px;
  align-items: flex-end; /* 让四层台阶从低到高整齐落地对齐 */
}

/* 四层台阶立柱结构 */
.podium-column-step {
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  position: relative;
}

.podium-column-step:hover {
  transform: translateY(-8px);
}

/* 每阶站的价位卡片 */
.podium-card {
  background: #FFFFFF;
  border-radius: 18px 18px 8px 8px;
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  box-shadow: 0 10px 30px -5px rgba(15, 23, 42, 0.08);
  transition: var(--transition);
  z-index: 2;
}

/* 阶梯一：浅石阶 (基础免费版) - 最低阶 */
.step-tier-1 .podium-card {
  border: 1.5px solid #E2E8F0;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
}
.step-tier-1 .podium-riser-base {
  height: 38px;
  background: linear-gradient(180deg, #E2E8F0 0%, #CBD5E1 100%);
  border-radius: 4px 4px 14px 14px;
  box-shadow: 0 8px 16px rgba(15, 23, 42, 0.06);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-tier-1 .podium-riser-base::after {
  content: "第一阶 · 浅石基层";
  font-size: 11.5px;
  font-weight: 700;
  color: #64748B;
  letter-spacing: 0.5px;
}

/* 阶梯二：浅蓝微光阶 (个人标准版) - 第二阶 */
.step-tier-2 .podium-card {
  border: 1.5px solid #BFDBFE;
  background: linear-gradient(180deg, #FFFFFF 0%, #EFF6FF 100%);
}
.step-tier-2 .podium-riser-base {
  height: 64px;
  background: linear-gradient(180deg, #93C5FD 0%, #60A5FA 100%);
  border-radius: 4px 4px 14px 14px;
  box-shadow: 0 10px 20px rgba(37, 99, 235, 0.15);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-tier-2 .podium-riser-base::after {
  content: "第二阶 · 冰湖微蓝";
  font-size: 11.5px;
  font-weight: 700;
  color: #1E40AF;
  letter-spacing: 0.5px;
}

/* 阶梯三：深蓝科技主力阶 (团队进阶版 · 主推推荐) - 第三阶 */
.step-tier-3 .podium-card {
  border: 2px solid #2563EB;
  background: #FFFFFF;
  box-shadow: 0 16px 36px -6px rgba(37, 99, 235, 0.28);
}
.step-tier-3 .podium-riser-base {
  height: 92px;
  background: linear-gradient(180deg, #2563EB 0%, #1D4ED8 100%);
  border-radius: 4px 4px 14px 14px;
  box-shadow: 0 14px 26px rgba(37, 99, 235, 0.35);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-tier-3 .podium-riser-base::after {
  content: "第三阶 · 科技深蓝 (主力)";
  font-size: 12px;
  font-weight: 800;
  color: #FFFFFF;
  letter-spacing: 0.5px;
}

/* 阶梯四：巅峰深墨藏青阶 (企业定制版) - 最高顶阶 */
.step-tier-4 .podium-card {
  border: 2px solid #1E293B;
  background: linear-gradient(180deg, #0F172A 0%, #020617 100%);
  color: #FFFFFF;
  box-shadow: 0 20px 42px -6px rgba(15, 23, 42, 0.45);
}
.step-tier-4 .podium-card .plan-tier-name,
.step-tier-4 .podium-card .plan-price-num {
  color: #FFFFFF;
}
.step-tier-4 .podium-card .plan-tier-subtitle,
.step-tier-4 .podium-card .plan-price-period {
  color: #94A3B8;
}
.step-tier-4 .podium-card .plan-feature-item {
  color: #E2E8F0;
}
.step-tier-4 .podium-riser-base {
  height: 120px;
  background: linear-gradient(180deg, #0F172A 0%, #030712 100%);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 4px 4px 14px 14px;
  box-shadow: 0 16px 32px rgba(2, 6, 23, 0.5);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.step-tier-4 .podium-riser-base::after {
  content: "第四阶 · 至尊藏青顶阶";
  font-size: 12px;
  font-weight: 800;
  color: #60A5FA;
  letter-spacing: 0.5px;
}

/* 兼容普通定价网格 */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 50px;
}

.pricing-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: var(--radius-lg);
  padding: 32px 24px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: var(--transition);
}

.pricing-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.pricing-card.featured {
  border: 2px solid var(--blue-primary);
  box-shadow: 0 16px 36px -6px rgba(37, 99, 235, 0.2);
}

.overflow-badge-hot {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--blue-primary);
  color: #FFFFFF;
  font-size: 11.5px;
  font-weight: 700;
  padding: 3px 14px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.35);
  white-space: nowrap;
}

.plan-tier-name {
  font-size: 18px;
  font-weight: 800;
  color: var(--text-title);
  margin-bottom: 6px;
}

.plan-tier-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.plan-price-row {
  margin-bottom: 24px;
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.plan-price-num {
  font-size: 34px;
  font-weight: 900;
  color: var(--text-title);
  letter-spacing: -1px;
}

.plan-price-period {
  font-size: 13px;
  color: var(--text-muted);
}

.plan-features-list {
  list-style: none;
  margin-bottom: 28px;
  flex-grow: 1;
}

.plan-feature-item {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.5;
  margin-bottom: 12px;
  color: var(--text-body);
}

.feat-supported {
  color: var(--blue-primary);
  font-weight: 800;
}

.feat-unsupported {
  color: #CBD5E1;
  font-weight: 700;
}

.pricing-banner-showcase {
  margin-top: 56px;
  background: var(--bg-page);
  border-radius: 18px;
  border: 1px solid var(--border-light);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
}

.pricing-banner-info {
  padding: 36px 40px;
}

.pricing-banner-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* 7. 疑虑打消与常见问题 (FAQ Accordion) */
.faq-section {
  padding: 90px 0;
  background-color: var(--bg-page);
}

.faq-accordion-box {
  max-width: 860px;
  margin: 0 auto;
}

.faq-detail-item {
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  margin-bottom: 14px;
  background: #FFFFFF;
  overflow: hidden;
  transition: var(--transition);
}

.faq-detail-item[open] {
  border-color: var(--blue-border);
  box-shadow: var(--shadow-sm);
}

.faq-summary {
  list-style: none;
  padding: 18px 24px;
  font-size: 16px;
  font-weight: 700;
  color: var(--text-title);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

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

.faq-icon-toggle {
  font-size: 20px;
  font-weight: 400;
  color: var(--blue-primary);
  transition: transform 0.2s ease;
}

.faq-detail-item[open] .faq-icon-toggle::before {
  content: "−";
}

.faq-detail-item:not([open]) .faq-icon-toggle::before {
  content: "+";
}

.faq-content-inner {
  padding: 0 24px 22px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-muted);
  border-top: 1px dashed #F1F5F9;
  padding-top: 14px;
}

.faq-step-list {
  list-style: none;
  margin-top: 10px;
}

.faq-step-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 8px;
}

.faq-step-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--blue-surface);
  color: var(--blue-primary);
  font-size: 11px;
  font-weight: 800;
  flex-shrink: 0;
  margin-top: 2px;
  border: 1px solid var(--blue-border);
}

/* 8. 页脚与合规 (Footer) */
.site-footer {
  background-color: #101827;
  color: #94A3B8;
  padding: 72px 0 36px;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 40px;
  padding-bottom: 54px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand-title {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #FFFFFF;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 14px;
}

.footer-brand-desc {
  font-size: 14px;
  line-height: 1.65;
  color: #64748B;
  max-width: 320px;
  margin-bottom: 20px;
}

.footer-col-title {
  font-size: 14.5px;
  font-weight: 700;
  color: #FFFFFF;
  margin-bottom: 18px;
}

.footer-links-list {
  list-style: none;
}

.footer-links-list li {
  margin-bottom: 10px;
}

.footer-links-list a {
  font-size: 13.5px;
  color: #94A3B8;
}

.footer-links-list a:hover {
  color: #60A5FA;
}

.footer-bottom-legal {
  padding-top: 30px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12.5px;
  color: rgba(255, 255, 255, 0.45);
  flex-wrap: wrap;
  gap: 16px;
}

.footer-legal-links {
  display: flex;
  gap: 20px;
}

.footer-legal-links a:hover {
  color: #FFFFFF;
}

/* 内页定制样式 */
.subpage-hero {
  padding: 56px 0 40px;
  text-align: center;
  background: linear-gradient(180deg, #FFFFFF 0%, var(--bg-page) 100%);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
}

.subpage-h1 {
  font-size: 38px;
  font-weight: 900;
  color: var(--text-title);
  letter-spacing: -0.8px;
  margin-bottom: 12px;
}

.subpage-desc {
  font-size: 16px;
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto;
}

.web-app-frame-card {
  background: #FFFFFF;
  border-radius: 20px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-lg);
  padding: 24px;
  margin: 40px auto;
  max-width: 1080px;
}

.web-app-grid {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 24px;
  min-height: 540px;
}

.web-app-sidebar {
  background: #F8FAFC;
  border-radius: 14px;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.web-app-chatarea {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  padding: 24px;
}

.help-grid-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 40px;
  margin: 50px auto 90px;
}

.help-sidebar-nav {
  position: sticky;
  top: 90px;
  background: #FFFFFF;
  border-radius: 16px;
  padding: 24px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.help-nav-link {
  display: block;
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-body);
  margin-bottom: 4px;
}

.help-nav-link.active,
.help-nav-link:hover {
  background: var(--blue-surface);
  color: var(--blue-primary);
  font-weight: 600;
}

.help-article-content {
  background: #FFFFFF;
  border-radius: 18px;
  padding: 40px;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.help-article-content h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-title);
  margin-top: 36px;
  margin-bottom: 16px;
}

.help-article-content h2:first-child {
  margin-top: 0;
}

.help-article-content p {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-body);
  margin-bottom: 16px;
}

/* 响应式适配 */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .fat-columns-matrix {
    grid-template-columns: repeat(2, 1fr);
  }
  .fat-bottom-summary-strip {
    grid-template-columns: 1fr;
  }
  .bento-box-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .flow-steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pricing-podium-grid {
    grid-template-columns: repeat(2, 1fr);
    align-items: stretch;
    gap: 20px;
  }
  .pricing-banner-showcase {
    grid-template-columns: 1fr;
  }
  .split-box-card {
    grid-template-columns: 1fr;
  }
  .help-grid-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .header-container {
    padding: 0 16px;
  }
  .nav-links-menu {
    display: none;
  }
  .hero-title {
    font-size: 34px;
  }
  .fat-h2-title {
    font-size: 26px;
  }
  .fat-columns-matrix {
    grid-template-columns: 1fr;
  }
  .bento-box-grid {
    grid-template-columns: 1fr;
  }
  .flow-steps-grid {
    grid-template-columns: 1fr;
  }
  .pricing-grid {
    grid-template-columns: 1fr;
  }
  .pricing-podium-grid {
    grid-template-columns: 1fr;
    align-items: stretch;
    gap: 16px;
  }
  .podium-riser-base {
    height: 32px !important;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom-legal {
    flex-direction: column;
    align-items: flex-start;
  }
  .web-app-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   特化核心：同心圆环风 · 浅紫环+白圆心 · 圆环导航套在 Hero 外圈，圈上的字就是锚点
   ========================================================================== */
.hero-concentric-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px 10px;
  width: 100%;
}

.orbit-concentric-container {
  position: relative;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

/* 外圈浅紫环 (Outer Light-Purple Ring Orbit) */
.orbit-ring-outer {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px dashed rgba(168, 85, 247, 0.45);
  background: radial-gradient(circle, rgba(245, 243, 255, 0.7) 0%, rgba(237, 233, 254, 0.45) 60%, rgba(216, 180, 254, 0.2) 100%);
  box-shadow: 0 0 60px rgba(168, 85, 247, 0.16), inset 0 0 40px rgba(168, 85, 247, 0.08);
  pointer-events: none;
}

/* 中圈微光浅紫流光环 */
.orbit-ring-middle {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  border: 1.5px solid rgba(192, 132, 252, 0.35);
  pointer-events: none;
  animation: pulsePurpleRing 6s ease-in-out infinite alternate;
}

@keyframes pulsePurpleRing {
  0% { transform: scale(0.98); opacity: 0.7; }
  100% { transform: scale(1.02); opacity: 1; }
}

/* 圈上的字就是锚点 (Anchors on the Ring) */
.ring-nav-node {
  position: absolute;
  z-index: 10;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: #FFFFFF;
  border: 1.5px solid #DDD6FE;
  color: #6D28D9;
  font-weight: 700;
  font-size: 13.5px;
  border-radius: 9999px;
  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.14);
  text-decoration: none;
  white-space: nowrap;
  transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  pointer-events: auto;
}

.ring-nav-node:hover {
  background: #7C3AED;
  color: #FFFFFF;
  border-color: #7C3AED;
  transform: scale(1.08) translateY(-2px);
  box-shadow: 0 10px 24px rgba(124, 58, 237, 0.35);
}

.ring-nav-node .node-icon {
  font-size: 14px;
}

/* 圈上 6 大锚点精准几何分布 */
.node-pos-top {
  top: -16px;
  left: 50%;
  transform: translateX(-50%);
}
.node-pos-top-right {
  top: 55px;
  right: -10px;
}
.node-pos-bottom-right {
  bottom: 55px;
  right: -10px;
}
.node-pos-bottom {
  bottom: -16px;
  left: 50%;
  transform: translateX(-50%);
}
.node-pos-bottom-left {
  bottom: 55px;
  left: -10px;
}
.node-pos-top-left {
  top: 55px;
  left: -10px;
}

/* 内层白圆心 (White Core Center) */
.orbit-white-core {
  position: relative;
  z-index: 6;
  width: 320px;
  height: 320px;
  background: #FFFFFF;
  border-radius: 50%;
  box-shadow: 0 20px 48px -10px rgba(124, 58, 237, 0.18), 0 0 0 1px rgba(221, 214, 254, 0.9);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 22px;
  text-align: center;
  overflow: hidden;
}

.core-inner-card {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-radius: 50%;
  padding: 14px 10px;
}

.core-top-status {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 11.5px;
  font-weight: 700;
  color: #7C3AED;
  background: #F5F3FF;
  padding: 4px 12px;
  border-radius: 9999px;
  border: 1px solid #DDD6FE;
  margin: 0 auto;
}

.core-chat-bubble {
  background: #F8FAFC;
  border: 1px solid #E2E8F0;
  border-radius: 12px;
  padding: 10px 12px;
  text-align: left;
  font-size: 12px;
  color: #334155;
  line-height: 1.45;
  margin: 6px 0;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.03);
}

.core-progress-wrap {
  text-align: left;
  font-size: 11px;
  color: #64748B;
  width: 90%;
  margin: 0 auto;
}

.core-action-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  width: 90%;
  padding: 7px 0;
  background: linear-gradient(135deg, #7C3AED 0%, #2563EB 100%);
  color: #FFFFFF;
  border-radius: 9999px;
  font-size: 12px;
  font-weight: 700;
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.28);
  text-decoration: none;
  margin: 0 auto;
  transition: transform 0.2s ease;
}

.core-action-cta:hover {
  transform: translateY(-1px);
}

@media (max-width: 992px) {
  .orbit-concentric-container {
    width: 430px;
    height: 430px;
  }
  .orbit-ring-middle {
    width: 350px;
    height: 350px;
  }
  .orbit-white-core {
    width: 270px;
    height: 270px;
    padding: 16px;
  }
  .ring-nav-node {
    font-size: 12px;
    padding: 6px 12px;
  }
}

@media (max-width: 768px) {
  .hero-concentric-wrapper {
    padding: 24px 0;
  }
  .orbit-concentric-container {
    width: 320px;
    height: 320px;
  }
  .orbit-ring-outer {
    border-style: solid;
  }
  .orbit-ring-middle {
    display: none;
  }
  .orbit-white-core {
    width: 200px;
    height: 200px;
    padding: 10px;
  }
  .ring-nav-node {
    font-size: 11px;
    padding: 4px 8px;
    gap: 3px;
  }
  .core-chat-bubble {
    font-size: 10.5px;
    padding: 6px 8px;
  }
  .core-top-status {
    font-size: 10px;
    padding: 2px 8px;
  }
  .core-action-cta {
    font-size: 10.5px;
    padding: 5px 0;
  }
}

/* ==========================================================================
   特化核心：星图夜空风 · 午夜蓝+银白星点 · 星座连线：单点是技能，连成的星座是使用场景
   ========================================================================== */
.constellation-hero-panel {
  position: relative;
  width: 100%;
  background: radial-gradient(circle at 50% 30%, #162044 0%, #0B112C 60%, #060919 100%);
  border: 1px solid rgba(147, 197, 253, 0.25);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 24px 50px -10px rgba(6, 9, 25, 0.6), 0 0 40px rgba(96, 165, 250, 0.12);
  padding: 24px 20px;
  color: #FFFFFF;
}

/* 午夜背景繁星点缀 */
.star-field-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  background-image: 
    radial-gradient(1.5px 1.5px at 40px 60px, #FFFFFF, rgba(0,0,0,0)),
    radial-gradient(1px 1px at 120px 180px, #E2E8F0, rgba(0,0,0,0)),
    radial-gradient(2px 2px at 260px 80px, #FFFFFF, rgba(0,0,0,0)),
    radial-gradient(1px 1px at 320px 240px, #BAE6FD, rgba(0,0,0,0)),
    radial-gradient(2px 2px at 440px 140px, #FFFFFF, rgba(0,0,0,0)),
    radial-gradient(1.5px 1.5px at 180px 310px, #E2E8F0, rgba(0,0,0,0)),
    radial-gradient(2.5px 2.5px at 360px 40px, #FFFFFF, rgba(0,0,0,0)),
    radial-gradient(1px 1px at 480px 380px, #93C5FD, rgba(0,0,0,0)),
    radial-gradient(1.5px 1.5px at 90px 420px, #FFFFFF, rgba(0,0,0,0));
  background-size: 550px 500px;
  opacity: 0.85;
  animation: starTwinkle 4s ease-in-out infinite alternate;
}

@keyframes starTwinkle {
  0% { opacity: 0.7; }
  100% { opacity: 1; }
}

/* 顶部星宿抬头 */
.constellation-header {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.constellation-title-tag {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 700;
  color: #93C5FD;
  background: rgba(37, 99, 235, 0.2);
  border: 1px solid rgba(147, 197, 253, 0.35);
  padding: 4px 12px;
  border-radius: 9999px;
}

.constellation-live-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  color: #A5B4FC;
}

/* 星座图主体画布容器 */
.constellation-map-stage {
  position: relative;
  height: 290px;
  width: 100%;
  margin: 10px 0 16px;
}

/* SVG 连线层 */
.constellation-svg-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* 单点技能星宿 (Skill Star Nodes) */
.skill-star-node {
  position: absolute;
  z-index: 6;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: rgba(15, 23, 42, 0.8);
  border: 1.5px solid rgba(255, 255, 255, 0.6);
  border-radius: 9999px;
  font-size: 11.5px;
  font-weight: 700;
  color: #FFFFFF;
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.4), inset 0 0 8px rgba(96, 165, 250, 0.3);
  backdrop-filter: blur(8px);
  cursor: pointer;
  transition: all 0.25s ease;
}

.skill-star-node:hover {
  transform: scale(1.1);
  background: #2563EB;
  border-color: #FFFFFF;
  box-shadow: 0 0 25px #60A5FA;
}

.star-sparkle-dot {
  width: 8px;
  height: 8px;
  background: #FFFFFF;
  border-radius: 50%;
  box-shadow: 0 0 8px #FFFFFF, 0 0 14px #60A5FA;
  display: inline-block;
}

/* 星座使用场景徽标 (Constellation Scenario Tags) */
.constellation-scenario-badge {
  position: absolute;
  z-index: 7;
  font-size: 12px;
  font-weight: 800;
  padding: 4px 10px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 5px;
}

.badge-orion {
  background: rgba(30, 58, 138, 0.85);
  border: 1px solid #60A5FA;
  color: #93C5FD;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}

.badge-andromeda {
  background: rgba(88, 28, 135, 0.85);
  border: 1px solid #C084FC;
  color: #E9D5FF;
  box-shadow: 0 4px 16px rgba(147, 51, 234, 0.3);
}

/* 底部拟态对话交付卡片 */
.constellation-chat-card {
  position: relative;
  z-index: 8;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 14px;
  padding: 14px 16px;
  backdrop-filter: blur(12px);
}

.constellation-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
  font-size: 12px;
  color: #93C5FD;
}

.constellation-card-text {
  font-size: 13px;
  line-height: 1.55;
  color: #E2E8F0;
  margin-bottom: 10px;
}

@media (max-width: 768px) {
  .constellation-map-stage {
    height: 320px;
  }
  .skill-star-node {
    font-size: 10.5px;
    padding: 4px 8px;
  }
  .constellation-scenario-badge {
    font-size: 10.5px;
    padding: 3px 8px;
  }
}

/* ==========================================================================
   特化核心：PCB 电路风 · 深绿板+金色走线 · 电路板走线连接能力节点，下载端是板边接口
   ========================================================================== */
.pcb-board-wrapper {
  position: relative;
  width: 100%;
  background: radial-gradient(circle at 50% 30%, #0d2818 0%, #05160e 70%, #020b07 100%);
  border: 2px solid #b38f3f;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 24px 50px -10px rgba(2, 11, 7, 0.7), 0 0 30px rgba(212, 175, 55, 0.15), inset 0 0 40px rgba(0, 0, 0, 0.6);
  padding: 24px 22px 18px;
  color: #FFFFFF;
}

/* 玻璃纤维微网格质感底纹 */
.pcb-grid-texture {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  background-image: 
    linear-gradient(rgba(212, 175, 55, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(212, 175, 55, 0.05) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.85;
}

/* PCB 板顶部信息指示 */
.pcb-top-header {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(212, 175, 55, 0.3);
}

.pcb-chip-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 800;
  color: #FACC15;
  background: rgba(20, 83, 45, 0.6);
  border: 1px solid #EAB308;
  padding: 4px 12px;
  border-radius: 4px;
  letter-spacing: 0.5px;
}

.pcb-vias-light {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11px;
  color: #86EFAC;
  font-family: monospace;
}

/* 电路板走线舞台容器 */
.pcb-circuit-stage {
  position: relative;
  height: 290px;
  width: 100%;
  margin: 8px 0 16px;
}

/* SVG 金色电路走线 */
.pcb-gold-svg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* PCB 能力芯片节点 (Capability Chip Nodes) */
.pcb-node-chip {
  position: absolute;
  z-index: 6;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: #062312;
  border: 1.5px solid #EAB308;
  border-radius: 6px;
  font-size: 11.5px;
  font-weight: 700;
  color: #FEF08A;
  box-shadow: 0 0 12px rgba(234, 179, 8, 0.35), inset 0 0 6px rgba(234, 179, 8, 0.2);
  cursor: pointer;
  transition: all 0.24s ease;
}

.pcb-node-chip:hover {
  transform: translateY(-2px);
  background: #14532D;
  border-color: #FEF08A;
  box-shadow: 0 0 20px #EAB308;
  color: #FFFFFF;
}

.gold-via-dot {
  width: 7px;
  height: 7px;
  background: #FACC15;
  border-radius: 50%;
  border: 1px solid #FFFFFF;
  box-shadow: 0 0 6px #FACC15;
  display: inline-block;
}

/* 中央神经推演主控芯片 (Main Processor) */
.pcb-cpu-chip {
  position: absolute;
  z-index: 7;
  top: 75px;
  left: 50%;
  transform: translateX(-50%);
  width: 120px;
  height: 80px;
  background: #021a0d;
  border: 2px solid #F59E0B;
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 6px;
  text-align: center;
  box-shadow: 0 0 24px rgba(245, 158, 11, 0.4), inset 0 0 14px rgba(245, 158, 11, 0.25);
  cursor: pointer;
}

.pcb-cpu-pins {
  position: absolute;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* 板边金色接口 (Edge Connectors) · 下载端是板边接口 */
.pcb-edge-connector-wrap {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  z-index: 8;
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 90%;
}

.gold-fingers-strip {
  display: flex;
  gap: 6px;
  justify-content: center;
  margin-bottom: 4px;
}

.gold-finger-pin {
  width: 8px;
  height: 18px;
  background: linear-gradient(180deg, #F59E0B 0%, #FEF08A 60%, #D97706 100%);
  border-radius: 2px 2px 0 0;
  box-shadow: 0 0 6px rgba(245, 158, 11, 0.5);
}

.pcb-download-edge-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 10px 18px;
  background: linear-gradient(135deg, #15803D 0%, #047857 50%, #065F46 100%);
  border: 1.5px solid #FACC15;
  border-radius: 8px;
  color: #FEF08A;
  font-size: 13px;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 6px 18px rgba(5, 150, 105, 0.35);
  transition: all 0.25s ease;
}

.pcb-download-edge-btn:hover {
  background: linear-gradient(135deg, #16A34A 0%, #059669 100%);
  border-color: #FFFFFF;
  color: #FFFFFF;
  box-shadow: 0 8px 24px rgba(234, 179, 8, 0.4);
  transform: translateY(-2px);
}

/* 拟态推演成果条 */
.pcb-telemetry-box {
  position: relative;
  z-index: 9;
  background: rgba(2, 44, 21, 0.7);
  border: 1px solid rgba(234, 179, 8, 0.35);
  border-radius: 10px;
  padding: 10px 14px;
  margin-top: 10px;
  backdrop-filter: blur(8px);
}

@media (max-width: 768px) {
  .pcb-circuit-stage {
    height: 330px;
  }
  .pcb-node-chip {
    font-size: 10px;
    padding: 4px 8px;
  }
  .gold-finger-pin {
    width: 6px;
    height: 14px;
    gap: 4px;
  }
}

/* ==========================================================================
   特化核心：轨道交通风 · 浅灰底图+多色线路 · 地铁线路图，站点是功能，换乘站是「开始对话」
   ========================================================================== */
.metro-map-panel {
  position: relative;
  width: 100%;
  background: #F1F4F9;
  border: 1.5px solid #CBD5E1;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: 0 20px 45px -10px rgba(15, 23, 42, 0.12), inset 0 0 0 1px #FFFFFF;
  padding: 24px 22px 20px;
  color: #1E293B;
}

/* 地铁浅灰底图工程网格 */
.metro-grid-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  background-image: 
    linear-gradient(rgba(148, 163, 184, 0.15) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.15) 1px, transparent 1px);
  background-size: 20px 20px;
}

/* 线路图顶部指示栏与图例 */
.metro-top-bar {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1.5px solid #E2E8F0;
}

.metro-title-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 800;
  color: #1E3A8A;
  background: #DBEAFE;
  padding: 4px 12px;
  border-radius: 6px;
  letter-spacing: 0.5px;
}

.metro-lines-legend {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 11.5px;
  font-weight: 700;
}

.line-indicator {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.line-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}

.line-dot-blue { background: #2563EB; }
.line-dot-purple { background: #9333EA; }
.line-dot-emerald { background: #059669; }
.line-dot-amber { background: #D97706; }

/* 线路图画布容器 */
.metro-stage-canvas {
  position: relative;
  height: 290px;
  width: 100%;
  margin: 6px 0 16px;
}

.metro-svg-tracks {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* 普通站点 (功能站点 Station Nodes) */
.metro-station-node {
  position: absolute;
  z-index: 6;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  background: #FFFFFF;
  border-radius: 6px;
  font-size: 11.5px;
  font-weight: 700;
  box-shadow: 0 3px 8px rgba(15, 23, 42, 0.08);
  white-space: nowrap;
  cursor: pointer;
  transition: all 0.22s ease;
}

.metro-station-node:hover {
  transform: scale(1.06) translateY(-2px);
  box-shadow: 0 6px 14px rgba(15, 23, 42, 0.15);
}

.station-pin {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: 2px solid #FFFFFF;
  box-shadow: 0 0 0 1.5px rgba(0, 0, 0, 0.2);
  display: inline-block;
}

/* 核心换乘大站：换乘站是「开始对话」 */
.metro-interchange-hub {
  position: absolute;
  z-index: 8;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.interchange-outer-ring {
  position: relative;
  width: 130px;
  height: 130px;
  border-radius: 50%;
  background: #FFFFFF;
  border: 4px solid #1E293B;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.18), 0 0 0 4px rgba(37, 99, 235, 0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 10px;
  text-align: center;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.interchange-outer-ring:hover {
  transform: scale(1.05);
  box-shadow: 0 14px 30px rgba(37, 99, 235, 0.28), 0 0 0 6px rgba(37, 99, 235, 0.3);
}

.interchange-badge-label {
  font-size: 10px;
  font-weight: 800;
  color: #DC2626;
  background: #FEE2E2;
  padding: 2px 6px;
  border-radius: 4px;
  margin-bottom: 4px;
  letter-spacing: 0.5px;
}

.interchange-action-title {
  font-size: 15px;
  font-weight: 900;
  color: #1E3A8A;
  margin-bottom: 4px;
}

.interchange-lines-strip {
  display: flex;
  gap: 4px;
  margin-top: 2px;
}

.interchange-chip {
  font-size: 9.5px;
  color: #FFFFFF;
  font-weight: 700;
  padding: 1px 5px;
  border-radius: 3px;
}

/* 底部状态提示条 */
.metro-telemetry-banner {
  position: relative;
  z-index: 9;
  background: #FFFFFF;
  border: 1px solid #CBD5E1;
  border-radius: 12px;
  padding: 10px 14px;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}

@media (max-width: 768px) {
  .metro-stage-canvas {
    height: 330px;
  }
  .interchange-outer-ring {
    width: 110px;
    height: 110px;
  }
  .interchange-action-title {
    font-size: 13px;
  }
  .metro-station-node {
    font-size: 10px;
    padding: 3px 6px;
  }
}

/* ==========================================================================
   特化核心：联单撕票风 · 淡绿复写纸+红撕口 · 票据穿孔虚线把模块撕成上下联
   ========================================================================== */
.receipt-ticket-wrapper {
  position: relative;
  width: 100%;
  filter: drop-shadow(0 18px 36px rgba(15, 23, 42, 0.12));
}

/* 上联：淡绿复写纸 (存根联 / 用户诉求核验) */
.ticket-part-upper {
  position: relative;
  background: #E8F5E9; /* 淡绿复写纸基底 */
  border: 1.5px solid #A5D6A7;
  border-bottom: none;
  border-radius: 16px 16px 0 0;
  padding: 24px 22px 20px;
  color: #1B5E20;
}

.ticket-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px dashed #81C784;
}

.ticket-serial-badge {
  font-family: "Courier New", Courier, monospace;
  font-size: 12px;
  font-weight: 800;
  color: #2E7D32;
  letter-spacing: 1px;
}

.ticket-stamp-red {
  display: inline-block;
  padding: 2px 8px;
  border: 1.5px solid #EF4444;
  border-radius: 4px;
  color: #DC2626;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 1px;
  transform: rotate(-3deg);
}

.ticket-upper-body {
  font-size: 13.5px;
  line-height: 1.6;
  color: #2E7D32;
}

.ticket-table-row {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
  border-bottom: 1px dotted #C8E6C9;
  font-size: 12.5px;
}

/* 票据穿孔虚线与红色撕口 (Perforated Line with Red Tear Cutouts) */
.ticket-perforation-divider {
  position: relative;
  height: 28px;
  background: #E8F5E9;
  border-left: 1.5px solid #A5D6A7;
  border-right: 1.5px solid #A5D6A7;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: visible;
}

/* 左右红色半圆撕口 (Red Tear Cutouts) */
.ticket-cutout-left,
.ticket-cutout-right {
  position: absolute;
  top: 50%;
  width: 22px;
  height: 22px;
  background: #FAFBFD; /* 穿透至背景色 */
  border: 1.5px solid #EF4444;
  border-radius: 50%;
  transform: translateY(-50%);
  z-index: 5;
}

.ticket-cutout-left {
  left: -12px;
}

.ticket-cutout-right {
  right: -12px;
}

/* 红色穿孔虚线 (Red Perforated Dashed Line) */
.ticket-dash-line {
  width: 100%;
  height: 0;
  border-top: 2px dashed #EF4444;
  position: relative;
  z-index: 2;
}

.ticket-tear-instruction {
  position: absolute;
  font-size: 10.5px;
  font-weight: 800;
  color: #EF4444;
  background: #E8F5E9;
  padding: 0 10px;
  letter-spacing: 1.5px;
  z-index: 3;
}

/* 下联：兑现联 / 交付成果单 (下联交付联) */
.ticket-part-lower {
  position: relative;
  background: #F1F8E9; /* 次级淡青复写纸 */
  border: 1.5px solid #A5D6A7;
  border-top: none;
  border-radius: 0 0 16px 16px;
  padding: 18px 22px 22px;
  color: #33691E;
}

.ticket-lower-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  font-size: 13px;
  font-weight: 800;
  color: #1B5E20;
}

.ticket-result-box {
  background: #FFFFFF;
  border: 1px solid #C8E6C9;
  border-radius: 8px;
  padding: 12px;
  margin-bottom: 12px;
}

.ticket-result-title {
  font-size: 12.5px;
  font-weight: 800;
  color: #1B5E20;
  margin-bottom: 4px;
}

.ticket-result-desc {
  font-size: 12px;
  color: #4B5563;
  line-height: 1.5;
}

.ticket-bottom-barcode-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px dashed #A5D6A7;
}

.ticket-barcode-sim {
  font-family: monospace;
  font-size: 18px;
  letter-spacing: 2px;
  color: #1B5E20;
  line-height: 1;
}

.ticket-action-pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: #1B5E20;
  color: #FFFFFF;
  border-radius: 9999px;
  font-size: 12.5px;
  font-weight: 800;
  text-decoration: none;
  box-shadow: 0 4px 10px rgba(27, 94, 32, 0.25);
  transition: all 0.2s ease;
}

.ticket-action-pill-btn:hover {
  background: #2E7D32;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(27, 94, 32, 0.35);
}

@media (max-width: 768px) {
  .ticket-part-upper,
  .ticket-part-lower {
    padding: 16px 14px;
  }
  .ticket-table-row {
    font-size: 11.5px;
  }
  .ticket-barcode-sim {
    font-size: 14px;
    letter-spacing: 1px;
  }
}

/* ==========================================================================
   竖向卷轴，上下木轴夹住全部内容，模块间无卡片盒 · 卷轴水墨风 · 牙白绢+松烟墨
   ========================================================================== */

:root {
  /* 牙白绢 + 松烟墨 + 朱砂印色彩体系 */
  --silk-ivory: #FAF7F0;          /* 牙白绢帛底 */
  --silk-ivory-warm: #F4EFE6;     /* 暖调绢底 */
  --silk-border: rgba(41, 37, 36, 0.12); /* 工笔细墨线 */
  --ink-pine-soot: #1C1917;       /* 松烟浓墨 */
  --ink-pine-charcoal: #292524;   /* 松烟焦墨 */
  --ink-body: #44403C;            /* 水墨正文 */
  --ink-muted: #78716C;           /* 远山淡墨 */
  --ink-wash-bg: rgba(41, 37, 36, 0.035); /* 淡墨轻染 */
  --ink-wash-hover: rgba(41, 37, 36, 0.07);/* 墨韵上浮 */
  
  --cinnabar-red: #B91C1C;        /* 朱砂印泥红 */
  --cinnabar-seal: #DC2626;       /* 印章正红 */
  --cinnabar-light: #FEF2F2;      /* 朱砂浅晕底 */
  --cinnabar-border: #FECACA;     /* 朱砂印边 */

  --wood-dark: #2B1810;           /* 紫檀深木 */
  --wood-mid: #4A2818;            /* 檀木主色 */
  --wood-light: #6E3F27;          /* 木纹高光 */
  --brass-gold: #D4AF37;          /* 黄铜轴头 */
  --brass-dark: #8C6D1F;          /* 铜质深调 */
}

/* 页面绢帛总背景 */
body.scroll-theme-body {
  background-color: #EFECE6;
  background-image: 
    radial-gradient(circle at 50% 0%, rgba(41, 37, 36, 0.04) 0%, transparent 60%),
    linear-gradient(to right, rgba(41, 37, 36, 0.03) 0%, transparent 8%, transparent 92%, rgba(41, 37, 36, 0.03) 100%);
  color: var(--ink-body);
  font-family: -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Serif SC", serif, sans-serif;
}

/* 竖向卷轴全景外包裹体系 */
.scroll-canvas-master {
  max-width: 1280px;
  margin: 0 auto;
  position: relative;
  box-shadow: 
    0 15px 45px rgba(41, 37, 36, 0.15),
    0 2px 10px rgba(41, 37, 36, 0.08);
}

/* 顶部与底部木质卷轴杆 (上下木轴夹住全部内容) */
.scroll-roller-bar {
  position: relative;
  height: 38px;
  background: linear-gradient(to bottom, #5C321E 0%, #3D1F12 35%, #1F0D07 70%, #442214 100%);
  box-shadow: 
    inset 0 2px 3px rgba(255, 255, 255, 0.25),
    inset 0 -2px 4px rgba(0, 0, 0, 0.6),
    0 8px 18px rgba(0, 0, 0, 0.35);
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 100;
}

.scroll-roller-top {
  border-radius: 6px 6px 0 0;
  margin-top: 16px;
}

.scroll-roller-bottom {
  border-radius: 0 0 6px 6px;
  margin-bottom: 24px;
  height: 44px;
}

/* 左右两端凸出的黄铜轴头 (Scroll Knobs) */
.scroll-roller-knob {
  width: 28px;
  height: 46px;
  background: linear-gradient(135deg, #F3E5AB 0%, #D4AF37 40%, #8C6D1F 80%, #E8C85A 100%);
  box-shadow: 
    0 4px 10px rgba(0, 0, 0, 0.4),
    inset 0 1px 2px rgba(255, 255, 255, 0.8),
    inset 0 -2px 4px rgba(0, 0, 0, 0.5);
  border-radius: 4px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.scroll-roller-knob::before {
  content: "";
  position: absolute;
  width: 8px;
  height: 100%;
  background: rgba(0, 0, 0, 0.2);
  border-left: 1px solid rgba(255, 255, 255, 0.4);
  border-right: 1px solid rgba(0, 0, 0, 0.3);
}

.scroll-roller-knob.knob-left {
  margin-left: -14px;
  border-radius: 6px 2px 2px 6px;
}

.scroll-roller-knob.knob-right {
  margin-right: -14px;
  border-radius: 2px 6px 6px 2px;
}

/* 轴中心木质装裱铭牌与朱砂红绳 */
.scroll-roller-center {
  display: flex;
  align-items: center;
  gap: 12px;
}

.scroll-roller-silk-ribbon {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: #FEE2E2;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 2px;
  padding: 2px 14px;
  background: rgba(185, 28, 28, 0.65);
  border: 1px solid rgba(254, 202, 202, 0.4);
  border-radius: 20px;
  text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}

/* 牙白绢帛画芯主体 */
.scroll-silk-canvas {
  background-color: var(--silk-ivory);
  background-image: 
    linear-gradient(to right, rgba(41, 37, 36, 0.035) 0%, transparent 4%, transparent 96%, rgba(41, 37, 36, 0.035) 100%),
    linear-gradient(to bottom, rgba(41, 37, 36, 0.02) 0%, transparent 100px);
  position: relative;
  border-left: 2px solid rgba(41, 37, 36, 0.15);
  border-right: 2px solid rgba(41, 37, 36, 0.15);
  overflow: hidden;
}

/* 绢布内侧工笔水墨花边线 */
.scroll-silk-canvas::before {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 12px;
  width: 1px;
  background: rgba(41, 37, 36, 0.1);
  pointer-events: none;
}

.scroll-silk-canvas::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  right: 12px;
  width: 1px;
  background: rgba(41, 37, 36, 0.1);
  pointer-events: none;
}

/* 顶部导航栏 - 水墨绢帛款 */
.nav-scroll-theme {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(250, 247, 240, 0.88) !important;
  backdrop-filter: blur(14px) !important;
  border-bottom: 1px solid var(--silk-border) !important;
}

/* 朱砂方印 / 椭圆名章 */
.seal-stamp-red {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  background: var(--cinnabar-light);
  border: 1.5px solid var(--cinnabar-seal);
  border-radius: 4px;
  color: var(--cinnabar-seal);
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 1px;
  position: relative;
}

.seal-stamp-red::after {
  content: "印";
  position: absolute;
  right: -8px;
  bottom: -6px;
  font-size: 9px;
  width: 15px;
  height: 15px;
  background: var(--cinnabar-seal);
  color: #FFF;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 2px;
  transform: rotate(-10deg);
}

/* 模块间无卡片盒 · 模块大章节排布 */
.scroll-section-clean {
  padding: 70px 48px;
  position: relative;
  border-bottom: 1px dashed rgba(41, 37, 36, 0.15);
}

.scroll-section-clean:last-child {
  border-bottom: none;
}

/* 水墨章节眉批与题跋 */
.ink-section-header {
  text-align: center;
  margin-bottom: 48px;
  position: relative;
}

.ink-chapter-mark {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--cinnabar-seal);
  font-weight: 800;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--cinnabar-border);
  padding-bottom: 4px;
}

.ink-chapter-title {
  font-size: 32px;
  font-weight: 800;
  color: var(--ink-pine-soot);
  letter-spacing: -0.5px;
  margin-bottom: 12px;
}

.ink-chapter-subtitle {
  font-size: 15px;
  color: var(--ink-muted);
  max-width: 620px;
  margin: 0 auto;
  line-height: 1.7;
}

/* 3. 核心能力矩阵 · 无卡片盒水墨四列屏风 (Bento Box Clean Ink Grid) */
.ink-bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

/* 无浮夸盒子，仅由工笔水墨留白与淡染构成 */
.ink-bento-leaf {
  background: var(--ink-wash-bg);
  border: 1px solid var(--silk-border);
  border-radius: 12px;
  padding: 26px 22px;
  position: relative;
  transition: all 0.28s ease;
  display: flex;
  flex-direction: column;
}

.ink-bento-leaf:hover {
  background: rgba(255, 255, 255, 0.7);
  transform: translateY(-5px);
  border-color: rgba(41, 37, 36, 0.28);
  box-shadow: 0 12px 28px -6px rgba(41, 37, 36, 0.12);
}

.ink-icon-capsule {
  width: 46px;
  height: 46px;
  border-radius: 10px;
  background: rgba(41, 37, 36, 0.06);
  border: 1px solid rgba(41, 37, 36, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 18px;
  transition: transform 0.2s ease;
}

.ink-bento-leaf:hover .ink-icon-capsule {
  transform: scale(1.08);
  background: var(--cinnabar-light);
  border-color: var(--cinnabar-border);
}

.ink-bento-title {
  font-size: 17px;
  font-weight: 800;
  color: var(--ink-pine-soot);
  margin-bottom: 10px;
}

.ink-bento-desc {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--ink-body);
  margin-bottom: 18px;
  flex-grow: 1;
}

.ink-bento-link {
  font-size: 13.5px;
  font-weight: 700;
  color: var(--cinnabar-seal);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: gap 0.2s ease;
}

.ink-bento-leaf:hover .ink-bento-link {
  gap: 10px;
}

/* 4. 深度工作流 · 松烟深墨画境 (Dark Mode Ink Showcase) */
.ink-dark-showcase {
  background: #11141A !important;
  color: #E2E8F0 !important;
  padding: 70px 48px;
  position: relative;
  overflow: hidden;
}

.ink-dark-showcase::before {
  content: "";
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(185, 28, 28, 0.15) 0%, transparent 70%);
  top: -100px;
  right: -50px;
  pointer-events: none;
}

.ink-flow-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  position: relative;
  z-index: 2;
}

.ink-flow-step-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  padding: 22px 18px;
  position: relative;
  transition: all 0.25s ease;
}

.ink-flow-step-item:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(254, 202, 202, 0.35);
  transform: translateY(-4px);
}

.ink-step-badge {
  font-size: 11px;
  font-weight: 800;
  color: #F87171;
  background: rgba(220, 38, 38, 0.2);
  padding: 2px 8px;
  border-radius: 4px;
  display: inline-block;
  margin-bottom: 12px;
}

/* 5. 场景对照 · 对联式双栏水墨对照框 (Split Ink Box) */
.ink-split-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  background: rgba(41, 37, 36, 0.025);
  border: 1px solid var(--silk-border);
  border-radius: 14px;
  padding: 28px;
}

.ink-split-col-left {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid #E5E5E5;
  border-radius: 10px;
  padding: 20px;
}

.ink-split-col-right {
  background: #FFFBF5;
  border: 1.5px solid #FCD34D;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 4px 16px rgba(217, 119, 6, 0.08);
}

/* 6. 阶梯定价 · 无盒水墨长卷阶梯 (Pricing Ink Table) */
.ink-pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.ink-pricing-leaf {
  background: rgba(255, 255, 255, 0.6);
  border: 1px solid var(--silk-border);
  border-radius: 14px;
  padding: 28px 20px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.25s ease;
}

.ink-pricing-leaf.featured {
  background: #FFFFFF;
  border: 2px solid var(--cinnabar-seal);
  box-shadow: 0 14px 32px -4px rgba(185, 28, 28, 0.16);
  transform: scale(1.02);
}

.ink-pricing-leaf.featured::before {
  content: "朱砂名荐 · 最受欢迎";
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--cinnabar-seal);
  color: #FFFFFF;
  font-size: 11px;
  font-weight: 800;
  padding: 2px 14px;
  border-radius: 12px;
  letter-spacing: 1px;
  white-space: nowrap;
}

/* 7. 疑虑打消与常见问题 · 水墨问答卷轴 (FAQ Accordion) */
.ink-faq-container {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.ink-faq-item {
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid var(--silk-border);
  border-radius: 10px;
  overflow: hidden;
  transition: all 0.2s ease;
}

.ink-faq-item[open] {
  background: #FFFFFF;
  border-color: rgba(41, 37, 36, 0.3);
  box-shadow: 0 6px 16px rgba(41, 37, 36, 0.06);
}

.ink-faq-summary {
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 800;
  color: var(--ink-pine-soot);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

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

.ink-faq-summary .faq-indicator {
  font-size: 18px;
  font-weight: 700;
  color: var(--cinnabar-seal);
  transition: transform 0.2s ease;
}

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

.ink-faq-body {
  padding: 0 22px 20px 22px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-body);
  border-top: 1px dashed rgba(41, 37, 36, 0.1);
  padding-top: 14px;
}

/* 8. 页脚松烟墨底 */
.ink-footer-dark {
  background: #181513 !important;
  color: #D6D3D1 !important;
  border-top: 2px solid #292524;
}

/* 响应式适配 */
@media (max-width: 1024px) {
  .ink-bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .ink-flow-steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .ink-pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .scroll-section-clean {
    padding: 50px 24px;
  }
}

@media (max-width: 768px) {
  .scroll-canvas-master {
    margin: 0 6px;
  }
  .scroll-roller-knob {
    width: 20px;
    height: 38px;
  }
  .scroll-roller-knob.knob-left {
    margin-left: -10px;
  }
  .scroll-roller-knob.knob-right {
    margin-right: -10px;
  }
  .ink-bento-grid {
    grid-template-columns: 1fr;
  }
  .ink-flow-steps-grid {
    grid-template-columns: 1fr;
  }
  .ink-split-box {
    grid-template-columns: 1fr;
  }
  .ink-pricing-grid {
    grid-template-columns: 1fr;
  }
  .scroll-section-clean {
    padding: 40px 16px;
  }
}

/* ==========================================================================
   纸张层叠，向下滚动等于揭开下一层模块 · 层纸揭开风 · 多层浅彩纸：杏、蓝、灰
   ========================================================================== */

:root {
  /* 多层浅彩纸调色盘 */
  --paper-apricot: #FFF7ED;      /* 暖杏纸底色 */
  --paper-apricot-edge: #FED7AA; /* 杏纸边框 */
  --paper-apricot-tag: #EA580C;  /* 杏纸强调色 */
  --paper-apricot-sub: #FFFDF9;  /* 杏纸次层 */

  --paper-blue: #F0F7FF;         /* 清蓝纸底色 */
  --paper-blue-edge: #BAE6FD;    /* 蓝纸边框 */
  --paper-blue-tag: #0284C7;     /* 蓝纸强调色 */
  --paper-blue-sub: #F8FAFD;     /* 蓝纸次层 */

  --paper-gray: #F8FAFC;         /* 浅灰纸底色 */
  --paper-gray-edge: #E2E8F0;    /* 灰纸边框 */
  --paper-gray-tag: #475569;     /* 灰纸强调色 */
  --paper-gray-sub: #FFFFFF;     /* 灰纸次层 */

  --paper-shadow-peel: 0 -18px 42px -10px rgba(15, 23, 42, 0.08), 0 6px 18px rgba(0, 0, 0, 0.03);
  --paper-shadow-card: 0 10px 24px -4px rgba(15, 23, 42, 0.06), 0 4px 10px rgba(0, 0, 0, 0.02);
}

/* 纸张层叠总容器 */
.paper-stack-container {
  max-width: 1240px;
  margin: 0 auto;
  position: relative;
  background-color: #E2E8F0;
  box-shadow: 0 25px 60px -15px rgba(15, 23, 42, 0.2);
}

/* 纸页层体系 (向下滚动等于揭开下一层纸张) */
.paper-sheet-layer {
  position: relative;
  padding: 80px 48px 90px 48px;
  border-radius: 28px 28px 0 0;
  border-top: 2px solid rgba(255, 255, 255, 0.95);
  box-shadow: var(--paper-shadow-peel);
  margin-top: -30px; /* 产生上下层叠搭接与揭开感 */
  transition: transform 0.3s ease;
}

.paper-sheet-layer:first-child {
  margin-top: 0;
  border-radius: 0;
}

/* 暖杏纸层 */
.paper-sheet-apricot {
  background-color: var(--paper-apricot);
  background-image: 
    radial-gradient(circle at 90% 10%, rgba(251, 146, 60, 0.07) 0%, transparent 50%),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.6) 0%, transparent 120px);
  z-index: 10;
}

/* 清蓝纸层 */
.paper-sheet-blue {
  background-color: var(--paper-blue);
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(56, 189, 248, 0.08) 0%, transparent 50%),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.7) 0%, transparent 120px);
  z-index: 20;
}

/* 浅灰纸层 */
.paper-sheet-gray {
  background-color: var(--paper-gray);
  background-image: 
    radial-gradient(circle at 80% 80%, rgba(148, 163, 184, 0.06) 0%, transparent 50%),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.8) 0%, transparent 120px);
  z-index: 30;
}

/* 墨深纸层 (用于深色工作流) */
.paper-sheet-dark {
  background-color: #0F172A !important;
  color: #E2E8F0 !important;
  border-top: 2px solid rgba(255, 255, 255, 0.15) !important;
  box-shadow: 0 -20px 48px -10px rgba(0, 0, 0, 0.35) !important;
  z-index: 25;
}

/* 纸张揭开顶签卡 (Sheet Header Tab) */
.paper-sheet-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: 9999px;
  font-size: 12.5px;
  font-weight: 800;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.tab-apricot {
  background: #FFEDD5;
  color: #C2410C;
  border: 1px solid #FDBA74;
}

.tab-blue {
  background: #E0F2FE;
  color: #0369A1;
  border: 1px solid #7DD3FC;
}

.tab-gray {
  background: #F1F5F9;
  color: #334155;
  border: 1px solid #CBD5E1;
}

.tab-dark {
  background: rgba(255, 255, 255, 0.1);
  color: #F87171;
  border: 1px solid rgba(255, 255, 255, 0.18);
}

/* 纸张卡片微质感 (Paper Bento Leaf) */
.paper-bento-card {
  background: #FFFFFF;
  border: 1px solid #E8EDF5;
  border-radius: 18px;
  padding: 26px 22px;
  box-shadow: var(--paper-shadow-card);
  transition: all 0.26s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.paper-bento-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 32px -6px rgba(15, 23, 42, 0.12);
  border-color: #CBD5E1;
}

/* 纸张对齐双栏对照框 */
.paper-split-box {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 18px;
  padding: 28px;
  box-shadow: var(--paper-shadow-card);
}

.paper-split-input {
  background: #F8FAFC;
  border: 1.5px dashed #CBD5E1;
  border-radius: 14px;
  padding: 20px;
}

.paper-split-output {
  background: #FFFBEB;
  border: 1.5px solid #FDE68A;
  border-radius: 14px;
  padding: 20px;
  box-shadow: 0 6px 18px rgba(245, 158, 11, 0.08);
}

/* 纸张阶梯定价网格 */
.paper-pricing-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.paper-pricing-card {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 18px;
  padding: 30px 22px;
  box-shadow: var(--paper-shadow-card);
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all 0.25s ease;
}

.paper-pricing-card.featured {
  border: 2px solid var(--blue-primary);
  box-shadow: 0 18px 36px -6px rgba(37, 99, 235, 0.18);
  transform: scale(1.02);
}

.paper-pricing-card.featured .paper-pricing-hot-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--blue-primary);
  color: #FFFFFF;
  font-size: 11.5px;
  font-weight: 800;
  padding: 3px 14px;
  border-radius: 9999px;
  white-space: nowrap;
  box-shadow: 0 4px 10px rgba(37, 99, 235, 0.3);
}

/* 纸张原生 FAQ 折叠 */
.paper-faq-accordion {
  max-width: 860px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.paper-faq-item {
  background: #FFFFFF;
  border: 1px solid #E2E8F0;
  border-radius: 14px;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.03);
  overflow: hidden;
  transition: all 0.2s ease;
}

.paper-faq-item[open] {
  border-color: #94A3B8;
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.06);
}

.paper-faq-summary {
  padding: 20px 24px;
  font-size: 16px;
  font-weight: 800;
  color: var(--text-title);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

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

.paper-faq-toggle {
  font-size: 20px;
  font-weight: 700;
  color: var(--blue-primary);
  line-height: 1;
}

.paper-faq-item[open] .paper-faq-toggle::before {
  content: "−";
}

.paper-faq-item:not([open]) .paper-faq-toggle::before {
  content: "+";
}

.paper-faq-body {
  padding: 0 24px 22px 24px;
  border-top: 1px dashed #E2E8F0;
  padding-top: 16px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-body);
}

/* 移动端响应式 */
@media (max-width: 1024px) {
  .paper-sheet-layer {
    padding: 60px 28px 70px 28px;
    margin-top: -20px;
  }
  .paper-pricing-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .paper-sheet-layer {
    padding: 45px 18px 55px 18px;
    margin-top: -16px;
    border-radius: 20px 20px 0 0;
  }
  .paper-split-box {
    grid-template-columns: 1fr;
    padding: 18px;
  }
  .paper-pricing-grid {
    grid-template-columns: 1fr;
  }
}