/* ==========================================================================
   有序AI (Wanwu Youxu AI) - 官方落地页样式表
   视觉风格：Apple 官网极简轻科技美学 (Clean, Modern, Frosted Glass, High Contrast)
   ========================================================================== */

/* --- 0. CSS 变量与设计系统 --- */
:root {
  /* 品牌色彩 */
  --color-brand-primary: #3543F6;       /* 万序蓝 */
  --color-brand-primary-hover: #2633e6;
  --color-brand-primary-active: #1d27bf;
  --color-brand-primary-light: rgba(53, 67, 246, 0.08);
  --color-brand-primary-glow: rgba(53, 67, 246, 0.25);
  
  --color-brand-cyan: #42F1C1;          /* 生命青 */
  --color-brand-cyan-light: rgba(66, 241, 193, 0.15);
  --color-brand-gradient: linear-gradient(135deg, #3543F6 0%, #42F1C1 100%);
  --color-brand-gradient-hover: linear-gradient(135deg, #2b39ed 0%, #30e5b3 100%);
  --color-brand-gradient-subtle: linear-gradient(135deg, rgba(53, 67, 246, 0.04) 0%, rgba(66, 241, 193, 0.04) 100%);

  /* 基础背景色 */
  --bg-page: #F8FAFC;                   /* 冰白/极浅冷灰底 */
  --bg-surface: #FFFFFF;
  --bg-surface-secondary: #F1F5F9;
  --bg-surface-glass: rgba(255, 255, 255, 0.76);
  --bg-surface-glass-heavy: rgba(255, 255, 255, 0.88);
  --bg-surface-glass-card: rgba(255, 255, 255, 0.65);

  /* 文字色彩 */
  --text-primary: #0F172A;              /* 深蓝黑 */
  --text-secondary: #475569;            /* 中性灰蓝 */
  --text-muted: #94A3B8;                /* 浅灰蓝 */
  --text-on-dark: #FFFFFF;

  /* 边框与阴影 */
  --border-glass: rgba(255, 255, 255, 0.85);
  --border-subtle: rgba(226, 232, 240, 0.8);
  --border-active: #3543F6;
  
  --shadow-sm: 0 2px 8px -2px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(53, 67, 246, 0.07), 0 8px 10px -6px rgba(15, 23, 42, 0.03);
  --shadow-lg: 0 20px 35px -10px rgba(53, 67, 246, 0.1), 0 10px 15px -5px rgba(15, 23, 42, 0.04);
  --shadow-nav: 0 12px 30px -10px rgba(53, 67, 246, 0.09), 0 1px 3px rgba(15, 23, 42, 0.04);
  --shadow-floating: 0 15px 35px -5px rgba(53, 67, 246, 0.22);

  /* 布局与间距 */
  --container-max-width: 1240px;
  --nav-max-width: 1040px;
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-pill: 9999px;

  /* 字体系统 (Apple 风格平滑排版) */
  --font-sans: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "WenQuanYi Micro Hei", sans-serif;
  --font-mono: "SF Mono", Menlo, Monaco, Consolas, monospace;

  /* 抽屉课表的统一字号
     模块徽标 / Day 标题 / 课节名称三者同号，靠颜色与字重区分层级。
     改这一处即可三者同步（原先分别是 12px / 13px / 14px，视觉不齐）。 */
  --schedule-font-size: 14px;
  --schedule-badge-width: 56px;

  /* 过渡 */
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* --- 1. 全局重置与排版 --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

html {
  scroll-behavior: smooth;
  font-family: var(--font-sans);
  background-color: var(--bg-page);
  color: var(--text-primary);
  font-size: 16px;
  line-height: 1.6;
}

body {
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

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

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
  transition: all var(--transition-fast);
}

input, textarea, select {
  font-family: inherit;
  font-size: 1rem;
}

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

/* 页面通用容器 */
.container {
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
  position: relative;
}

.section-wrapper {
  padding: 100px 0;
  position: relative;
}

section[id] {
  scroll-margin-top: 96px;
}

/* 标题类视觉规范 */
.section-header {
  text-align: center;
  max-width: 820px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-brand-primary);
  background: var(--color-brand-primary-light);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.section-title {
  font-size: 40px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--text-primary);
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 18px;
  color: var(--text-secondary);
  line-height: 1.65;
  font-weight: 400;
}

.section-footer-note {
  margin-top: 48px;
  text-align: center;
  font-size: 16px;
  font-weight: 500;
  color: var(--color-brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.section-footer-note::before,
.section-footer-note::after {
  content: "";
  display: inline-block;
  width: 40px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-brand-primary));
}
.section-footer-note::after {
  background: linear-gradient(90deg, var(--color-brand-primary), transparent);
}

/* --- 2. 顶部居中胶囊导航栏 --- */
.navbar-fixed-container {
  position: fixed;
  top: 18px;
  left: 0;
  right: 0;
  z-index: 999;
  display: flex;
  justify-content: center;
  padding: 0 16px;
  pointer-events: none; /* 让外框不遮挡下层点击 */
}

.nav-capsule {
  pointer-events: auto;
  width: 100%;
  max-width: var(--nav-max-width);
  height: 64px;
  border-radius: 32px;
  background: rgba(255, 255, 255, 0.72);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border: 1px solid rgba(255, 255, 255, 0.85);
  box-shadow: 0 6px 20px -5px rgba(53, 67, 246, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px 0 24px;
  transition: all var(--transition-normal);
}

/* 滚动下滑后加强玻璃质感与阴影 */
.navbar-fixed-container.scrolled .nav-capsule {
  background: rgba(255, 255, 255, 0.88);
  border-color: rgba(226, 232, 240, 0.8);
  box-shadow: var(--shadow-nav);
  transform: translateY(-2px);
}

.nav-logo-link {
  display: flex;
  align-items: center;
  height: 38px;
  flex-shrink: 0;
}

.nav-logo-img {
  height: 34px;
  width: auto;
  object-fit: contain;
}

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

.nav-link {
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 0;
  transition: color var(--transition-fast);
}

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

.nav-link.active {
  color: var(--color-brand-primary);
  font-weight: 600;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 18px;
  height: 2.5px;
  border-radius: 2px;
  background: var(--color-brand-gradient);
}

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

.btn-nav-cta {
  background: var(--color-brand-primary);
  color: #FFFFFF;
  font-size: 14px;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 14px rgba(53, 67, 246, 0.28);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-nav-cta:hover {
  background: var(--color-brand-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(53, 67, 246, 0.38);
}

.mobile-menu-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  background: rgba(0, 0, 0, 0.04);
}

/* 移动端菜单弹窗 */
.mobile-nav-drawer {
  display: none;
  position: fixed;
  top: 90px;
  left: 16px;
  right: 16px;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  z-index: 998;
  flex-direction: column;
  gap: 16px;
}

.mobile-nav-drawer.open {
  display: flex;
}

.mobile-nav-drawer a {
  font-size: 16px;
  font-weight: 600;
  padding: 10px 0;
  border-bottom: 1px solid var(--border-subtle);
}

/* --- 3. 首屏 Banner 区域 --- */
.hero-section {
  position: relative;
  width: 100%;
  min-height: 640px;
  max-height: 760px;
  background-color: #FFFFFF;
  background-image: url('landing-banner.jpg');
  background-size: cover;
  background-position: right center;
  background-repeat: no-repeat;
  padding-top: 110px; /* 给固定导航留出高度 */
  padding-bottom: 60px;
  display: flex;
  align-items: center;
  overflow: hidden;
  box-shadow: inset 0 -20px 40px -15px rgba(15, 23, 42, 0.03);
}

/* 左侧超柔和微透冰白渐变遮罩，保护文字高对比度同时不遮挡右侧3D立方体 */
.hero-gradient-overlay {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 55%;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.94) 0%, rgba(255, 255, 255, 0.85) 45%, rgba(255, 255, 255, 0) 100%);
  pointer-events: none;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 760px; /* 为主标题单行显示预留足够宽度 */
  margin-left: clamp(16px, 4vw, 64px);
}

.hero-overline {
  font-size: 15px;
  font-weight: 600;
  color: var(--color-brand-primary);
  letter-spacing: 0.04em;
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-overline::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-brand-cyan);
  box-shadow: 0 0 10px var(--color-brand-cyan);
}

.hero-title {
  font-size: 58px;
  font-weight: 800;
  line-height: 1.18;
  color: var(--text-primary);
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  white-space: nowrap;
}

.hero-title-gradient {
  background: linear-gradient(135deg, #3543f6 0%, #42f1c1 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 36px;
  font-weight: 400;
}

.hero-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-brand-primary);
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 600;
  padding: 16px 36px;
  border-radius: var(--radius-pill);
  box-shadow: 0 10px 25px -3px rgba(53, 67, 246, 0.38);
  transition: all var(--transition-fast);
}

.hero-cta-btn:hover {
  background: var(--color-brand-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 14px 30px -3px rgba(53, 67, 246, 0.48);
}

.hero-cta-btn svg {
  transition: transform var(--transition-fast);
}

.hero-cta-btn:hover svg {
  transform: translateY(3px);
}

/* 底部微露提示向下滚动 */
.hero-scroll-indicator {
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  z-index: 2;
  opacity: 0.8;
  animation: floatIndicator 2.2s infinite ease-in-out;
}

@keyframes floatIndicator {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 6px); }
}

/* --- 4. 时代背景区域 --- */
.background-section {
  background: #FFFFFF;
  position: relative;
}

/* 4项现实问题横向排布（不使用厚重卡片，轻科技简约风格） */
.pain-points-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 64px;
}

.pain-point-item {
  padding: 24px 20px;
  position: relative;
  background: transparent;
  transition: all var(--transition-fast);
}

.pain-point-item:not(:last-child)::after {
  content: "";
  position: absolute;
  top: 20%;
  bottom: 20%;
  right: -12px;
  width: 1px;
  background: rgba(226, 232, 240, 0.9);
}

.pain-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--color-brand-primary-light);
  color: var(--color-brand-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  transition: all var(--transition-fast);
}

.pain-point-item:hover .pain-icon-wrapper {
  background: var(--color-brand-primary);
  color: #FFFFFF;
  transform: scale(1.05);
}

.pain-point-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
}

.pain-point-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 能力断层对照结构 (Apple Style 玻璃对比面板) */
.gap-analysis-card {
  background: rgba(248, 250, 252, 0.85);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 44px 40px;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.gap-columns-container {
  display: grid;
  grid-template-columns: 1fr 1.2fr 1fr;
  gap: 28px;
  align-items: stretch;
}

.gap-col {
  display: flex;
  flex-direction: column;
}

.gap-col-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid rgba(226, 232, 240, 0.7);
}

.gap-badge {
  font-size: 12px;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

.gap-col.left .gap-badge {
  background: rgba(148, 163, 184, 0.2);
  color: #475569;
}

.gap-col.right .gap-badge {
  background: var(--color-brand-cyan-light);
  color: #0d9488;
}

.gap-col.middle .gap-badge {
  background: var(--color-brand-primary-light);
  color: var(--color-brand-primary);
}

.gap-col-title {
  font-size: 18px;
  font-weight: 700;
}

.gap-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  flex: 1;
}

.gap-card-item {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.02);
  transition: all var(--transition-fast);
}

.gap-col.left .gap-card-item {
  color: var(--text-secondary);
  border-left: 3px solid #94A3B8;
}

.gap-col.right .gap-card-item {
  font-weight: 600;
  border-left: 3px solid var(--color-brand-primary);
  background: linear-gradient(90deg, rgba(53, 67, 246, 0.03) 0%, #FFFFFF 100%);
}

/* 中间断层缺口高亮 */
.gap-col.middle .gap-card-item {
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.95), rgba(241, 245, 249, 0.95));
  border: 1px dashed var(--color-brand-primary);
  color: var(--color-brand-primary);
  font-weight: 700;
  justify-content: center;
  position: relative;
}

/* --- 5. 超级个体与超级组织 --- */
.super-org-section {
  background: var(--bg-page);
  position: relative;
}

.concept-compare-row {
  display: grid;
  grid-template-columns: 4fr 6fr;
  gap: 32px;
  margin-bottom: 64px;
}

.concept-card {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 40px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.concept-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.concept-card.highlight-card {
  background: linear-gradient(145deg, #FFFFFF 0%, rgba(248, 250, 255, 0.9) 100%);
  border: 1px solid rgba(53, 67, 246, 0.25);
  box-shadow: 0 10px 30px -10px rgba(53, 67, 246, 0.12);
}

.concept-badge {
  display: inline-block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-brand-primary);
  background: var(--color-brand-primary-light);
  padding: 4px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
}

.concept-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.concept-desc {
  font-size: 16px;
  line-height: 1.75;
  color: var(--text-secondary);
}

/* 环形能力循环 (5步) */
.ability-loop-container {
  background: #FFFFFF;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-subtle);
  padding: 48px 40px;
  box-shadow: var(--shadow-sm);
}

.ability-loop-title {
  text-align: center;
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 40px;
  color: var(--text-primary);
}

.loop-steps-track {
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 12px;
  position: relative;
}

.loop-step-item {
  flex: 1;
  background: var(--bg-page);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px 18px;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: all var(--transition-normal);
}

.loop-step-item:hover,
.loop-step-item.active {
  background: #FFFFFF;
  border-color: var(--color-brand-primary);
  box-shadow: 0 10px 25px -5px rgba(53, 67, 246, 0.12);
  transform: translateY(-4px);
}

.loop-step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-brand-primary-light);
  color: var(--color-brand-primary);
  font-weight: 800;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  transition: all var(--transition-fast);
}

.loop-step-item:hover .loop-step-number,
.loop-step-item.active .loop-step-number {
  background: var(--color-brand-primary);
  color: #FFFFFF;
}

.loop-step-text {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.55;
}

/* --- 6. 企业AI进化路径 --- */
.evolution-path-section {
  background: #FFFFFF;
}

.path-stages-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  position: relative;
}

/* 桌面端连接发光路径 */
.path-stages-row::before {
  content: "";
  position: absolute;
  top: 60px;
  left: 10%;
  right: 10%;
  height: 3px;
  background: linear-gradient(90deg, #3543F6 0%, #42F1C1 100%);
  z-index: 0;
  border-radius: 2px;
  opacity: 0.6;
}

.stage-card {
  background: var(--bg-page);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  position: relative;
  z-index: 1;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.stage-card:hover {
  background: #FFFFFF;
  border-color: rgba(53, 67, 246, 0.3);
  box-shadow: var(--shadow-md);
  transform: translateY(-5px);
}

.stage-card-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 20px;
}

.stage-num {
  font-size: 42px;
  font-weight: 800;
  line-height: 1;
  color: var(--color-brand-primary);
  letter-spacing: -0.03em;
  font-family: var(--font-mono);
}

.stage-name {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-primary);
}

.stage-subhead {
  font-size: 17px;
  font-weight: 600;
  color: var(--color-brand-primary);
  margin-bottom: 12px;
}

.stage-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 24px;
  flex: 1;
}

.stage-outcomes-box {
  background: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 18px;
}

.stage-outcomes-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.stage-outcomes-tags {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

/* --- 7. 产品体系区域 --- */
.products-section {
  background: var(--bg-page);
}

/* 纯文字三阶段Tab（万序蓝文字 + 生命青下划线，不使用厚重胶囊） */
.product-tabs-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 48px;
  margin-bottom: 40px;
  border-bottom: 1px solid rgba(226, 232, 240, 0.7);
  padding-bottom: 16px;
}

.product-tab-btn {
  font-size: 19px;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 8px 12px;
  background: none;
  transition: all var(--transition-fast);
}

.product-tab-btn:hover {
  color: var(--color-brand-primary);
}

.product-tab-btn.active {
  color: var(--color-brand-primary);
  font-weight: 700;
}

.product-tab-btn.active::after {
  content: "";
  position: absolute;
  bottom: -17px;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-brand-gradient);
  border-radius: 3px 3px 0 0;
}

/* 单主容器（避免“产品全览”与“产品详情”重复） */
.product-main-container {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 48px;
  box-shadow: var(--shadow-md);
  min-height: 520px;
  transition: all var(--transition-normal);
}

.tab-pane {
  display: none;
  animation: fadeIn 0.35s ease-out;
}

.tab-pane.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Tab 1 & Tab 3: 左右图文布局 */
.split-layout-tab {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.tab-badge-level {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 700;
  color: var(--color-brand-primary);
  background: var(--color-brand-primary-light);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 16px;
}

.tab-prod-title {
  font-size: 32px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 18px;
}

.tab-prod-tagline {
  font-size: 18px;
  font-weight: 600;
  color: var(--color-brand-primary);
  margin-bottom: 18px;
  line-height: 1.5;
}

.tab-prod-desc {
  font-size: 16px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 28px;
}

.tab-details-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 36px;
}

.tab-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 15px;
  line-height: 1.6;
}

.tab-detail-bullet {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-brand-cyan);
  margin-top: 8px;
  flex-shrink: 0;
}

.tab-action-row {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn-primary-action {
  background: var(--color-brand-primary);
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 600;
  padding: 14px 30px;
  border-radius: var(--radius-pill);
  box-shadow: 0 8px 20px -3px rgba(53, 67, 246, 0.3);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary-action:hover {
  background: var(--color-brand-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -3px rgba(53, 67, 246, 0.4);
}

.tab-graphic-card {
  background: linear-gradient(145deg, #F8FAFC 0%, rgba(241, 245, 249, 0.8) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Tab 2: 能力提升 (左右分栏 35% vs 65% + 手风琴) */
.skills-tab-split {
  display: grid;
  grid-template-columns: 3.5fr 6.5fr;
  gap: 40px;
}

.skills-tab-left {
  padding-right: 20px;
  border-right: 1px solid rgba(226, 232, 240, 0.8);
}

.accordion-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.accordion-item {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  background: var(--bg-page);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.accordion-item.active {
  background: #FFFFFF;
  border-color: var(--color-brand-primary);
  box-shadow: 0 8px 25px -5px rgba(53, 67, 246, 0.1);
}

.accordion-header {
  width: 100%;
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-align: left;
  background: none;
}

.accordion-title-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.accordion-level {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-brand-primary);
  background: var(--color-brand-primary-light);
  padding: 4px 10px;
  border-radius: var(--radius-pill);
}

.accordion-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
}

.accordion-chevron {
  width: 24px;
  height: 24px;
  color: var(--text-muted);
  transition: transform var(--transition-normal);
}

.accordion-item.active .accordion-chevron {
  transform: rotate(180deg);
  color: var(--color-brand-primary);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.16, 1, 0.3, 1), padding 0.3s ease;
  padding: 0 24px;
}

.accordion-item.active .accordion-content {
  max-height: 480px;
  padding: 0 24px 24px;
}

.accordion-body-text {
  font-size: 15px;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.accordion-outcomes {
  background: var(--bg-page);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  font-size: 14px;
  color: var(--text-primary);
  margin-bottom: 20px;
  border-left: 3px solid var(--color-brand-cyan);
}

/* --- 8. 方案配置器 --- */
.configurator-section {
  background: #FFFFFF;
}

/* 配置步骤指示条 (1.选择产品 -> 2.配置场景 -> 3.查看方案) */
.config-steps-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  margin-bottom: 48px;
}

.config-step-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-muted);
}

.config-step-item.active {
  color: var(--color-brand-primary);
}

.config-step-circle {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(148, 163, 184, 0.2);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}

.config-step-item.active .config-step-circle {
  background: var(--color-brand-primary);
  color: #FFFFFF;
}

.config-step-arrow {
  color: var(--text-muted);
  font-size: 16px;
}

/* 5大产品多选卡片 (L0 - L4) */
.product-selection-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.product-select-card {
  background: var(--bg-page);
  border: 1.5px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px 18px;
  cursor: pointer;
  position: relative;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.product-select-card:hover {
  border-color: rgba(53, 67, 246, 0.35);
  transform: translateY(-3px);
  box-shadow: var(--shadow-sm);
}

.product-select-card.selected {
  border-color: var(--color-brand-primary);
  background: linear-gradient(180deg, rgba(53, 67, 246, 0.04) 0%, rgba(255, 255, 255, 1) 100%);
  box-shadow: 0 8px 24px -5px rgba(53, 67, 246, 0.18);
}

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

.prod-card-level {
  font-size: 13px;
  font-weight: 800;
  color: var(--color-brand-primary);
}

.prod-card-checkbox {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 1.5px solid #CBD5E1;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  background: #FFFFFF;
}

.product-select-card.selected .prod-card-checkbox {
  background: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
  color: #FFFFFF;
}

.prod-card-name {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 10px;
  line-height: 1.35;
}

.prod-card-audience {
  font-size: 13px;
  color: var(--text-secondary);
  margin-bottom: 12px;
  line-height: 1.45;
}

.prod-card-outcomes {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.4;
  margin-bottom: 16px;
}

.prod-card-days-tag {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-brand-primary);
  background: var(--color-brand-primary-light);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  align-self: flex-start;
}

/* 场景配置子面板 (L2 & L3 场景练习选配) */
.scene-config-panel {
  background: rgba(248, 250, 252, 0.85);
  border: 1px solid rgba(53, 67, 246, 0.15);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  margin-bottom: 32px;
  display: none;
  animation: fadeIn 0.35s ease;
}

.scene-config-panel.visible {
  display: block;
}

.scene-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 16px;
}

.scene-panel-title {
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 10px;
}

.scene-panel-days-badge {
  font-size: 14px;
  font-weight: 700;
  color: var(--color-brand-primary);
  background: #FFFFFF;
  border: 1px solid rgba(53, 67, 246, 0.2);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
}

.scene-panel-notice {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 24px;
  line-height: 1.6;
}

/* 场景卡片网格 */
.scene-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
}

.scene-item-card {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.scene-item-card:hover {
  border-color: rgba(53, 67, 246, 0.4);
  transform: translateY(-2px);
}

.scene-item-card.selected {
  border-color: var(--color-brand-primary);
  background: linear-gradient(135deg, rgba(53, 67, 246, 0.03), #FFFFFF);
  box-shadow: 0 4px 12px -2px rgba(53, 67, 246, 0.12);
}

.scene-item-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.scene-item-name {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-primary);
}

.scene-item-tag {
  font-size: 13px;
  color: var(--text-secondary);
}

.scene-item-checkbox {
  width: 20px;
  height: 20px;
  border-radius: 5px;
  border: 1.5px solid #CBD5E1;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.scene-item-card.selected .scene-item-checkbox {
  background: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
  color: #FFFFFF;
}

/* 分类标签过滤 (L3分类筛选) */
.category-filter-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.category-filter-btn {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
}

.category-filter-btn:hover {
  color: var(--color-brand-primary);
}

.category-filter-btn.active {
  background: var(--color-brand-primary);
  color: #FFFFFF;
  border-color: var(--color-brand-primary);
}

/* 页面右下方持续显示的悬浮入口 (已选X项 ｜ 查看方案) */
.floating-scheme-trigger {
  position: fixed;
  bottom: 28px;
  right: 32px;
  z-index: 900;
  background: var(--color-brand-primary);
  color: #FFFFFF;
  padding: 14px 24px;
  border-radius: var(--radius-pill);
  box-shadow: var(--shadow-floating);
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1.5px solid rgba(255, 255, 255, 0.35);
}

.floating-scheme-trigger:hover {
  background: var(--color-brand-primary-hover);
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 20px 40px -5px rgba(53, 67, 246, 0.38);
}

.floating-scheme-trigger .badge-count {
  background: var(--color-brand-cyan);
  color: #0F172A;
  font-size: 12px;
  font-weight: 800;
  padding: 2px 8px;
  border-radius: 10px;
}

/* --- 9. 最终成果区域 (中心聚合结构) --- */
.final-assets-section {
  background: var(--bg-page);
  position: relative;
}

.aggregation-container {
  max-width: 960px;
  margin: 0 auto;
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.aggregation-core-card {
  background: linear-gradient(135deg, #3543F6 0%, #1e25a8 100%);
  color: #FFFFFF;
  border-radius: var(--radius-pill);
  padding: 18px 42px;
  font-size: 22px;
  font-weight: 700;
  box-shadow: 0 12px 35px -5px rgba(53, 67, 246, 0.38);
  margin-bottom: 48px;
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 12px;
}

.core-pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-brand-cyan);
  box-shadow: 0 0 12px var(--color-brand-cyan);
}

.assets-quad-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  width: 100%;
}

.asset-box {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: 32px 28px;
  position: relative;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.asset-box:hover {
  border-color: rgba(53, 67, 246, 0.35);
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.asset-box-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-brand-primary);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.asset-box-desc {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.65;
}

/* --- 10. 方案与咨询区域 --- */
.consultation-section {
  background: #FFFFFF;
}

.consultation-glass-panel {
  background: rgba(248, 250, 252, 0.9);
  backdrop-filter: blur(28px);
  -webkit-backdrop-filter: blur(28px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  padding: 48px 44px;
  display: grid;
  grid-template-columns: 5.5fr 4.5fr;
  gap: 56px;
  align-items: start;
}

/* 左侧：已选方案摘要 */
.summary-left-pane {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.summary-pane-tag {
  font-size: 13px;
  font-weight: 700;
  color: var(--color-brand-primary);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.summary-pane-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
}

.summary-products-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 18px 20px;
  border: 1px solid var(--border-subtle);
}

.summary-prod-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
}

.summary-prod-pill svg {
  color: var(--color-brand-primary);
}

.summary-days-card {
  background: linear-gradient(135deg, rgba(53, 67, 246, 0.05) 0%, rgba(66, 241, 193, 0.05) 100%);
  border: 1px solid rgba(53, 67, 246, 0.15);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.summary-days-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.summary-days-number {
  font-size: 52px;
  font-weight: 800;
  line-height: 1;
  color: var(--color-brand-primary);
  letter-spacing: -0.03em;
  font-family: var(--font-mono);
  margin-bottom: 8px;
}

.summary-days-note {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.summary-action-links {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-top: 8px;
}

.summary-link-btn {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-brand-primary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
}

.summary-link-btn:hover {
  text-decoration: underline;
}

/* 未配置状态 */
.unconfigured-card {
  background: #FFFFFF;
  border: 1px dashed #CBD5E1;
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
}

.unconfigured-card h4 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 10px;
}

.unconfigured-card p {
  font-size: 14px;
  color: var(--text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

/* 右侧：三字段留资表单 */
.form-right-pane {
  background: #FFFFFF;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 36px 32px;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.form-label .required-star {
  color: #EF4444;
  margin-left: 4px;
}

.form-input {
  width: 100%;
  height: 50px;
  border-radius: var(--radius-md);
  border: 1.5px solid #E2E8F0;
  padding: 0 16px;
  font-size: 15px;
  color: var(--text-primary);
  background: #F8FAFC;
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-brand-primary);
  background: #FFFFFF;
  box-shadow: 0 0 0 4px var(--color-brand-primary-light);
}

.form-input.error {
  border-color: #EF4444;
  background: #FEF2F2;
}

.form-error-tip {
  font-size: 12px;
  color: #EF4444;
  margin-top: 5px;
  display: none;
}

.form-submit-btn {
  width: 100%;
  height: 52px;
  border-radius: var(--radius-pill);
  background: var(--color-brand-gradient);
  color: #FFFFFF;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.02em;
  box-shadow: 0 8px 20px -3px rgba(53, 67, 246, 0.35);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all var(--transition-fast);
  margin-top: 8px;
}

.form-submit-btn:hover:not(:disabled) {
  background: var(--color-brand-gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 25px -3px rgba(53, 67, 246, 0.45);
}

.form-submit-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* 加载态旋转图标
   （注：.animate-spin 此前只在 app.js 里被引用，CSS 中并未定义，spinner 实际不转） */
@keyframes spin {
  to { transform: rotate(360deg); }
}

.animate-spin {
  animation: spin 0.8s linear infinite;
}

/* 提交失败横幅：网络异常 / 限流 / 服务端错误 */
.form-submit-error {
  display: none;
  margin-top: 12px;
  padding: 10px 14px;
  border-radius: 8px;
  background: #FEF2F2;
  border: 1px solid #FECACA;
  color: #DC2626;
  font-size: 13px;
  line-height: 1.5;
}

.form-submit-error.visible {
  display: block;
}

.form-privacy-note {
  font-size: 12px;
  color: var(--text-muted);
  text-align: center;
  margin-top: 14px;
  line-height: 1.5;
}

/* 提交成功视图 */
.submission-success-view {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

.success-icon-badge {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: var(--color-brand-cyan-light);
  color: #0D9488;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 20px;
}

.success-title {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 10px;
}

.success-text {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

/* --- 11. 侧滑方案抽屉 (Day-by-Day 课表生成) --- */
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 1000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.drawer-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

.scheme-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 580px;
  max-width: 100vw;
  background: #FFFFFF;
  box-shadow: -15px 0 45px rgba(0, 0, 0, 0.15);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform var(--transition-normal);
}

.drawer-backdrop.active .scheme-drawer {
  transform: translateX(0);
}

.drawer-header {
  padding: 24px 32px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.drawer-title {
  font-size: 22px;
  font-weight: 700;
}

.drawer-close-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #F1F5F9;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.drawer-close-btn:hover {
  background: #E2E8F0;
  color: var(--text-primary);
}

.drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

/* 抽屉大号天数卡 */
.drawer-summary-card {
  background: linear-gradient(135deg, rgba(53, 67, 246, 0.05), rgba(66, 241, 193, 0.05));
  border: 1px solid rgba(53, 67, 246, 0.15);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.drawer-days-big {
  font-size: 54px;
  font-weight: 800;
  color: var(--color-brand-primary);
  line-height: 1;
  font-family: var(--font-mono);
  margin-bottom: 6px;
}

/* 课程表排期卡片 */
.schedule-product-block {
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 22px;
  background: var(--bg-page);
}

.schedule-prod-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  flex-wrap: wrap;
  gap: 8px;
}

.schedule-prod-name {
  font-size: 17px;
  font-weight: 700;
}

.schedule-audience-tag {
  font-size: 12px;
  font-weight: 600;
  color: var(--color-brand-primary);
  background: #FFFFFF;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(53, 67, 246, 0.2);
}

.day-timeline-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 16px;
  margin-top: 12px;
  border: 1px solid var(--border-subtle);
}

.day-tag {
  font-size: var(--schedule-font-size);
  font-weight: 700;
  color: var(--color-brand-primary);
  margin-bottom: 10px;
  display: inline-block;
}

.day-session-row {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.session-badge {
  font-size: var(--schedule-font-size);
  font-weight: 700;
  color: var(--text-muted);
  /* 与 Day 标题、课节名称同号；宽度留足以免两位数序号（模块10~20）折行 */
  width: var(--schedule-badge-width);
  flex-shrink: 0;
  white-space: nowrap;
}

.session-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: var(--schedule-font-size);
  color: var(--text-primary);
  line-height: 1.5;
}

.drawer-footer {
  padding: 20px 32px;
  border-top: 1px solid var(--border-subtle);
  background: #FFFFFF;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.drawer-btn-primary {
  width: 100%;
  height: 50px;
  border-radius: var(--radius-pill);
  background: var(--color-brand-primary);
  color: #FFFFFF;
  font-size: 15px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 6px 18px rgba(53, 67, 246, 0.3);
}

.drawer-btn-primary:hover {
  background: var(--color-brand-primary-hover);
}

.drawer-btn-secondary {
  width: 100%;
  height: 44px;
  border-radius: var(--radius-pill);
  background: #F1F5F9;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
}

.drawer-btn-secondary:hover {
  background: #E2E8F0;
  color: var(--text-primary);
}

/* --- 12. 页脚 --- */
.site-footer {
  background: #0A0E1A;
  color: #FFFFFF;
  padding: 64px 0 40px;
  position: relative;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  flex-wrap: wrap;
  gap: 32px;
}

.footer-brand {
  max-width: 380px;
}

.footer-logo-img {
  height: 32px;
  width: auto;
  margin-bottom: 16px;
}

.footer-tagline {
  font-size: 14px;
  color: #94A3B8;
  line-height: 1.6;
}

.footer-links {
  display: flex;
  gap: 36px;
}

.footer-link-item {
  font-size: 14px;
  color: #94A3B8;
}

.footer-link-item:hover {
  color: #FFFFFF;
}

.footer-bottom-copy {
  margin-top: 32px;
  text-align: center;
  font-size: 13px;
  color: #64748B;
}

/* --- 13. 移动端与响应式断点 --- */
@media (max-width: 1024px) {
  .pain-points-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pain-point-item:not(:last-child)::after {
    display: none;
  }
  .product-selection-grid {
    grid-template-columns: repeat(3, 1fr);
  }
  .path-stages-row {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .path-stages-row::before {
    display: none;
  }
  .skills-tab-split {
    grid-template-columns: 1fr;
  }
  .skills-tab-left {
    border-right: none;
    padding-right: 0;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 24px;
  }
  .consultation-glass-panel {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .section-title {
    font-size: 30px;
  }
  .hero-section {
    min-height: 520px;
    background-position: 70% center;
    padding-top: 96px;
  }
  .hero-gradient-overlay {
    width: 100%;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.85) 60%, rgba(255, 255, 255, 0.3) 100%);
  }
  .hero-title {
    font-size: clamp(24px, 7vw, 38px);
  }
  .hero-content {
    margin-left: 8px;
    max-width: calc(100% - 8px);
  }
  .nav-links {
    display: none;
  }
  .mobile-menu-toggle {
    display: flex;
  }
  .pain-points-grid {
    grid-template-columns: 1fr;
  }
  .gap-columns-container {
    grid-template-columns: 1fr;
  }
  .concept-compare-row {
    grid-template-columns: 1fr;
  }
  .loop-steps-track {
    flex-direction: column;
  }
  .product-selection-grid {
    grid-template-columns: 1fr;
  }
  .split-layout-tab {
    grid-template-columns: 1fr;
  }
  .assets-quad-grid {
    grid-template-columns: 1fr;
  }
  .scheme-drawer {
    width: 100vw;
    top: auto;
    bottom: 0;
    height: 90vh;
    border-radius: 24px 24px 0 0;
    transform: translateY(100%);
  }
  .drawer-backdrop.active .scheme-drawer {
    transform: translateY(0);
  }
  .floating-scheme-trigger {
    right: 16px;
    bottom: 20px;
    padding: 12px 18px;
    font-size: 14px;
  }
}