/* ============================================
   鉴远智能 JIANYUAN INTELLIGENCE - 企业官网样式
   主色：深空蓝 + 典雅金
   ============================================ */

:root {
  /* 主色系 */
  --color-navy-900: #060E1C;
  --color-navy-800: #0A1628;
  --color-navy-700: #0F1F3D;
  --color-navy-600: #162A4A;
  --color-navy-500: #1E3A5F;
  --color-navy-400: #2A4A73;

  /* 金色系 */
  --color-gold-100: #F5E6C4;
  --color-gold-200: #E8D5A3;
  --color-gold-300: #DBC482;
  --color-gold-400: #C9A962;
  --color-gold-500: #B8944A;
  --color-gold-600: #9A7B3A;

  /* 中性色 */
  --color-gray-100: #F0F2F5;
  --color-gray-200: #D9DFE8;
  --color-gray-300: #B4BFD0;
  --color-gray-400: #8A9BB3;
  --color-gray-500: #6B7D95;
  --color-gray-600: #4D5E75;

  /* 语义色 */
  --color-accent: var(--color-gold-400);
  --color-text-primary: #E8ECF1;
  --color-text-secondary: #A0B0C5;
  --color-text-muted: #6B7D95;
  --color-border: rgba(201, 169, 98, 0.2);
  --color-card-bg: rgba(15, 31, 61, 0.6);
  --color-card-hover: rgba(22, 42, 74, 0.8);

  /* 字体 */
  --font-serif: 'Noto Serif SC', 'Songti SC', 'SimSun', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  --font-display: 'Noto Serif SC', 'Songti SC', serif;

  /* 尺寸 */
  --container-max: 1280px;
  --section-padding: 120px;
  --nav-height: 72px;

  /* 动效 */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 0.2s var(--ease-out);
  --transition-base: 0.35s var(--ease-out);
  --transition-slow: 0.6s var(--ease-out);
}

/* Reset & Base */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-text-primary);
  background-color: var(--color-navy-800);
  overflow-x: hidden;
}

/* 背景纹理 */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background:
    radial-gradient(ellipse at 20% 0%, rgba(201, 169, 98, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(30, 58, 95, 0.4) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

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

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

a:hover {
  color: var(--color-gold-400);
}

/* 容器 */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 40px;
  position: relative;
  z-index: 1;
}

/* ============================================
   导航栏
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(10, 22, 40, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  background: rgba(6, 14, 28, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.nav-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 40px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
}

.nav-logo-mark {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--color-gold-400);
  border-radius: 2px;
  color: var(--color-gold-400);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.5px;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.nav-logo-cn {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: 2px;
}

.nav-logo-en {
  font-size: 10px;
  color: var(--color-text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
  list-style: none;
}

.nav-links a {
  font-size: 14px;
  color: var(--color-text-secondary);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--color-gold-400);
  transition: width var(--transition-base);
}

.nav-links a:hover {
  color: var(--color-gold-300);
}

.nav-links a:hover::after {
  width: 100%;
}

.nav-mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-mobile-toggle span {
  display: block;
  width: 24px;
  height: 1.5px;
  background: var(--color-text-primary);
  transition: all var(--transition-base);
}

/* ============================================
   通用 Section 样式
   ============================================ */
.section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 80px;
}

.section-label {
  display: inline-block;
  font-size: 12px;
  letter-spacing: 4px;
  color: var(--color-gold-400);
  text-transform: uppercase;
  margin-bottom: 16px;
  font-weight: 500;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.3;
  margin-bottom: 20px;
  letter-spacing: 1px;
}

.section-subtitle {
  font-size: 16px;
  color: var(--color-text-secondary);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.8;
}

.section-divider {
  width: 60px;
  height: 1px;
  background: var(--color-gold-400);
  margin: 24px auto 0;
}

/* 编号章节标记 */
.chapter-mark {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 32px;
  justify-content: center;
}

.chapter-num {
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--color-gold-400);
  letter-spacing: 3px;
  font-weight: 500;
}

.chapter-line {
  width: 40px;
  height: 1px;
  background: var(--color-gold-400);
  opacity: 0.5;
}

/* ============================================
   Hero 首屏
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding-top: var(--nav-height);
  overflow: hidden;
}

/* 粒子/节点网络背景 canvas */
#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.6;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 8px 20px;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  font-family: var(--font-serif);
  font-size: 12px;
  letter-spacing: 3px;
  color: var(--color-gold-300);
  margin-bottom: 32px;
  background: rgba(201, 169, 98, 0.05);
}

.hero-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-gold-400);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(34px, 4.8vw, 60px);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-text-primary);
  margin-bottom: 28px;
  letter-spacing: 1px;
  white-space: nowrap;
}

.hero-title .highlight {
  color: var(--color-gold-400);
  position: relative;
}

.hero-title .highlight::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold-400), transparent);
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(16px, 2vw, 20px);
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 48px;
  max-width: 680px;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 2px;
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 1px;
  cursor: pointer;
  border: none;
  transition: all var(--transition-base);
  text-decoration: none;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--color-gold-400);
  color: var(--color-navy-900);
}

.btn-primary:hover {
  background: var(--color-gold-300);
  color: var(--color-navy-900);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(201, 169, 98, 0.25);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-gray-500);
}

.btn-secondary:hover {
  border-color: var(--color-gold-400);
  color: var(--color-gold-400);
  transform: translateY(-2px);
}

.btn-arrow {
  font-size: 16px;
  transition: transform var(--transition-fast);
}

.btn:hover .btn-arrow {
  transform: translateX(4px);
}

.hero-stats {
  display: flex;
  gap: 60px;
  margin-top: 80px;
  padding-top: 40px;
  border-top: 1px solid var(--color-border);
}

.hero-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.hero-stat-num {
  font-family: var(--font-serif);
  font-size: 36px;
  font-weight: 600;
  color: var(--color-gold-400);
  line-height: 1;
}

.hero-stat-label {
  font-size: 13px;
  color: var(--color-text-muted);
  letter-spacing: 1px;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--color-text-muted);
  font-size: 11px;
  letter-spacing: 2px;
  z-index: 2;
}

.hero-scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--color-gold-400), transparent);
  animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* ============================================
   关于我们 - 三大板块
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.about-card {
  padding: 48px 36px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  position: relative;
  transition: all var(--transition-base);
  overflow: hidden;
}

.about-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-gold-400), transparent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-slow);
}

.about-card:hover {
  background: var(--color-card-hover);
  border-color: rgba(201, 169, 98, 0.4);
  transform: translateY(-6px);
}

.about-card:hover::before {
  transform: scaleX(1);
}

.about-card-num {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--color-gold-400);
  letter-spacing: 3px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.about-card-num::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--color-gold-400);
}

.about-card-title {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 24px;
  line-height: 1.4;
}

.about-card-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 28px;
}

.about-card-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.about-card-list li::before {
  content: '';
  flex-shrink: 0;
  width: 6px;
  height: 6px;
  border: 1px solid var(--color-gold-400);
  border-radius: 50%;
  margin-top: 7px;
}

.about-card-footer {
  font-size: 13px;
  color: var(--color-text-muted);
  line-height: 1.7;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

/* 合作背景 */
.partner-section {
  margin-top: 100px;
  padding: 60px;
  background: linear-gradient(135deg, rgba(15, 31, 61, 0.5), rgba(10, 22, 40, 0.8));
  border: 1px solid var(--color-border);
  border-radius: 4px;
  position: relative;
}

.partner-section::before {
  content: '一体两院';
  position: absolute;
  top: -1px;
  left: 40px;
  padding: 0 16px;
  background: var(--color-navy-800);
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--color-gold-400);
  letter-spacing: 4px;
  transform: translateY(-50%);
}

.partner-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 40px;
  align-items: center;
}

.partner-col {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.partner-col-title {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--color-gold-400);
  font-weight: 600;
  margin-bottom: 8px;
}

.partner-col-sub {
  font-size: 13px;
  color: var(--color-text-muted);
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.partner-col-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.partner-divider {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
  color: var(--color-gold-400);
}

.partner-divider-line {
  width: 1px;
  height: 80px;
  background: linear-gradient(to bottom, transparent, var(--color-gold-400), transparent);
}

.partner-divider-text {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
}

.partner-chain {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

.partner-chain-item {
  font-size: 13px;
  color: var(--color-text-secondary);
  padding: 6px 14px;
  background: rgba(201, 169, 98, 0.08);
  border-radius: 2px;
  letter-spacing: 1px;
}

.partner-chain-arrow {
  color: var(--color-gold-400);
  font-size: 12px;
}

/* ============================================
   核心团队
   ============================================ */
.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.team-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  transition: all var(--transition-base);
}

.team-card:hover {
  transform: translateY(-8px);
  border-color: rgba(201, 169, 98, 0.4);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.team-card-img {
  width: 100%;
  height: 320px;
  overflow: hidden;
  position: relative;
  background: var(--color-navy-700);
}

.team-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  filter: grayscale(20%);
}

.team-card:hover .team-card-img img {
  transform: scale(1.05);
  filter: grayscale(0%);
}

.team-card-img::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 50%;
  background: linear-gradient(to top, var(--color-navy-800), transparent);
  pointer-events: none;
}

.team-card-body {
  padding: 32px 28px;
}

.team-card-role {
  font-size: 12px;
  color: var(--color-gold-400);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.team-card-name {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.team-card-title {
  font-size: 14px;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--color-border);
  line-height: 1.6;
}

.team-card-bio {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.team-card-bio li {
  font-size: 13px;
  color: var(--color-text-muted);
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}

.team-card-bio li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-gold-400);
  font-size: 10px;
}

/* ============================================
   联合研发中心
   ============================================ */
.joint-center {
  background: linear-gradient(180deg, var(--color-navy-900) 0%, var(--color-navy-800) 100%);
}

.joint-intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
  padding: 32px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: rgba(201, 169, 98, 0.03);
}

.joint-intro-title {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-gold-400);
  margin-bottom: 12px;
  font-weight: 600;
}

.joint-intro-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

/* 顾问组 */
.advisors-section {
  margin-bottom: 80px;
}

.section-subheading {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 40px;
}

.section-subheading h3 {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--color-text-primary);
  font-weight: 600;
  letter-spacing: 1px;
}

.section-subheading-line {
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--color-border), transparent);
}

.section-subheading-tag {
  font-size: 12px;
  color: var(--color-gold-400);
  padding: 4px 12px;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  letter-spacing: 1px;
}

.advisors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.advisors-grid.advisors-grid-two {
  grid-template-columns: repeat(2, minmax(0, 640px));
  justify-content: center;
}

.advisor-card {
  display: flex;
  gap: 24px;
  padding: 28px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: all var(--transition-base);
}

.advisor-card:hover {
  border-color: rgba(201, 169, 98, 0.4);
  background: var(--color-card-hover);
}

.advisor-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  border: 2px solid var(--color-border);
  background: var(--color-navy-700);
}

.advisor-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.advisor-info {
  flex: 1;
  min-width: 0;
}

.advisor-name {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.advisor-role {
  font-size: 12px;
  color: var(--color-gold-400);
  letter-spacing: 2px;
  margin-bottom: 12px;
}

.advisor-bio {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.advisor-bio li {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.5;
  padding-left: 12px;
  position: relative;
}

.advisor-bio li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-gold-400);
  font-size: 9px;
  top: 1px;
}

/* 成员组 */
.members-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.member-card {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 24px 28px;
  background: rgba(15, 31, 61, 0.4);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: all var(--transition-base);
}

.member-card:hover {
  background: rgba(22, 42, 74, 0.6);
  border-color: rgba(201, 169, 98, 0.3);
}

.member-avatar-placeholder {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-navy-600), var(--color-navy-500));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--color-gold-400);
  font-weight: 600;
  flex-shrink: 0;
}

.member-info {
  flex: 1;
}

.member-name {
  font-family: var(--font-serif);
  font-size: 17px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.member-role {
  font-size: 12px;
  color: var(--color-gold-400);
  margin-bottom: 6px;
}

.member-desc {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* 院外成员 - 社科分支 */
.social-science-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 20px;
}

.ss-card {
  padding: 24px 20px;
  text-align: center;
  background: rgba(15, 31, 61, 0.4);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: all var(--transition-base);
}

.ss-card:hover {
  border-color: rgba(201, 169, 98, 0.4);
  transform: translateY(-4px);
}

.ss-field {
  font-size: 11px;
  color: var(--color-gold-400);
  letter-spacing: 2px;
  margin-bottom: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--color-border);
}

.ss-name {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.ss-affiliation {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* ============================================
   技术架构 / 方法
   ============================================ */
.tech-section {
  background: var(--color-navy-900);
}

/* 事前事中事后对比 */
.comparison-section {
  margin-bottom: 100px;
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.comparison-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  transition: all var(--transition-base);
}

.comparison-card:hover {
  border-color: rgba(201, 169, 98, 0.4);
  transform: translateY(-4px);
}

.comparison-card-header {
  padding: 28px 28px 20px;
  border-bottom: 1px solid var(--color-border);
  background: rgba(201, 169, 98, 0.04);
}

.comparison-phase {
  font-size: 12px;
  color: var(--color-gold-400);
  letter-spacing: 3px;
  margin-bottom: 8px;
}

.comparison-title {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.comparison-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.comparison-row {
  display: flex;
  gap: 16px;
}

.comparison-label {
  flex-shrink: 0;
  font-size: 11px;
  letter-spacing: 2px;
  padding: 4px 10px;
  border-radius: 2px;
  align-self: flex-start;
  font-weight: 500;
}

.comparison-label.today {
  color: var(--color-gray-400);
  border: 1px solid var(--color-gray-600);
  background: rgba(107, 125, 149, 0.1);
}

.comparison-label.with {
  color: var(--color-gold-400);
  border: 1px solid var(--color-gold-400);
  background: rgba(201, 169, 98, 0.08);
}

.comparison-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
  flex: 1;
}

/* 五层架构图 */
.architecture-section {
  margin-bottom: 100px;
}

.arch-container {
  position: relative;
  padding: 40px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.arch-spindle {
  text-align: center;
  margin-bottom: 40px;
  padding-bottom: 28px;
  border-bottom: 1px dashed var(--color-border);
}

.arch-spindle-title {
  font-size: 13px;
  color: var(--color-gold-400);
  letter-spacing: 3px;
  margin-bottom: 12px;
}

.arch-spindle-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.arch-spindle-item {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--color-text-primary);
  padding: 6px 16px;
  background: rgba(201, 169, 98, 0.08);
  border-radius: 2px;
  border: 1px solid var(--color-border);
}

.arch-spindle-arrow {
  color: var(--color-gold-400);
  font-size: 14px;
}

.arch-layers {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.arch-layer {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 24px;
  align-items: stretch;
}

.arch-layer-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px 12px;
  background: linear-gradient(135deg, rgba(201, 169, 98, 0.15), rgba(201, 169, 98, 0.05));
  border: 1px solid var(--color-gold-400);
  border-radius: 4px;
  text-align: center;
}

.arch-layer-num {
  font-family: var(--font-serif);
  font-size: 11px;
  color: var(--color-gold-400);
  letter-spacing: 2px;
  margin-bottom: 6px;
}

.arch-layer-name {
  font-family: var(--font-serif);
  font-size: 15px;
  font-weight: 600;
  color: var(--color-gold-300);
  line-height: 1.4;
}

.arch-layer-content {
  padding: 20px 24px;
  background: rgba(15, 31, 61, 0.6);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  transition: all var(--transition-base);
}

.arch-layer:hover .arch-layer-content {
  border-color: rgba(201, 169, 98, 0.3);
}

.arch-item {
  padding: 6px 14px;
  background: rgba(201, 169, 98, 0.06);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  font-size: 13px;
  color: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.arch-item:hover {
  background: rgba(201, 169, 98, 0.12);
  color: var(--color-gold-300);
  border-color: var(--color-gold-400);
}

.arch-layer-desc {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-left: auto;
  font-style: italic;
}

/* 基础设施底座 */
.arch-infra {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px dashed var(--color-border);
}

.arch-infra-item {
  padding: 20px;
  background: rgba(30, 58, 95, 0.3);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  text-align: center;
}

.arch-infra-name {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--color-text-primary);
  margin-bottom: 8px;
  font-weight: 600;
}

.arch-infra-desc {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* 校准闭环 */
.arch-calibration {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-top: 32px;
  padding: 20px 32px;
  background: rgba(201, 169, 98, 0.05);
  border: 1px dashed var(--color-gold-400);
  border-radius: 4px;
}

.arch-calibration-icon {
  font-size: 24px;
  color: var(--color-gold-400);
}

.arch-calibration-text {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.arch-calibration-text strong {
  color: var(--color-gold-400);
  font-weight: 500;
}

/* 四大优势 */
.advantages-section {
  margin-bottom: 100px;
}

.advantages-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.advantage-card {
  padding: 36px 28px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.advantage-card::before {
  content: attr(data-num);
  position: absolute;
  top: 16px;
  right: 20px;
  font-family: var(--font-serif);
  font-size: 48px;
  font-weight: 700;
  color: rgba(201, 169, 98, 0.08);
  line-height: 1;
}

.advantage-card:hover {
  transform: translateY(-6px);
  border-color: rgba(201, 169, 98, 0.4);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
}

.advantage-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--color-gold-400);
}

.advantage-title {
  font-family: var(--font-serif);
  font-size: 19px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 14px;
}

.advantage-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

/* 核心能力标签 */
.core-abilities {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.core-ability-tag {
  padding: 10px 24px;
  border: 1px solid var(--color-border);
  border-radius: 2px;
  font-family: var(--font-serif);
  font-size: 14px;
  color: var(--color-text-primary);
  background: rgba(201, 169, 98, 0.04);
  letter-spacing: 1px;
  transition: all var(--transition-fast);
}

.core-ability-tag:hover {
  border-color: var(--color-gold-400);
  color: var(--color-gold-400);
}

/* 社会传导链 */
.conduction-section {
  margin-bottom: 100px;
}

.conduction-7d {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
  margin-bottom: 48px;
}

.conduction-step {
  position: relative;
  padding: 24px 16px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  text-align: center;
  transition: all var(--transition-base);
}

.conduction-step:hover {
  border-color: var(--color-gold-400);
  transform: translateY(-4px);
}

.conduction-step-num {
  font-family: var(--font-serif);
  font-size: 11px;
  color: var(--color-gold-400);
  letter-spacing: 2px;
  margin-bottom: 10px;
}

.conduction-step-icon {
  font-size: 24px;
  margin-bottom: 10px;
}

.conduction-step-title {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.conduction-step-en {
  font-size: 10px;
  color: var(--color-text-muted);
  letter-spacing: 1px;
}

.conduction-step::after {
  content: '▸';
  position: absolute;
  right: -10px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-gold-400);
  font-size: 14px;
  z-index: 1;
}

.conduction-step:last-child::after {
  display: none;
}

.conduction-features {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.conduction-feature {
  padding: 24px;
  background: rgba(15, 31, 61, 0.4);
  border-left: 2px solid var(--color-gold-400);
  border-radius: 0 4px 4px 0;
}

.conduction-feature-title {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--color-gold-400);
  margin-bottom: 8px;
  font-weight: 600;
}

.conduction-feature-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

.conduction-quote {
  text-align: center;
  margin-top: 48px;
  padding: 28px;
  font-family: var(--font-serif);
  font-size: 18px;
  color: var(--color-gold-300);
  font-style: italic;
  letter-spacing: 1px;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* 社会智能闭环 */
.closed-loop-section {
  margin-bottom: 100px;
}

.closed-loop-flow {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  position: relative;
}

.loop-step {
  padding: 32px 28px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  position: relative;
  transition: all var(--transition-base);
}

.loop-step:hover {
  background: var(--color-card-hover);
  z-index: 2;
}

.loop-step:not(:last-child) {
  border-right: none;
}

.loop-step:first-child {
  border-radius: 4px 0 0 4px;
}

.loop-step:last-child {
  border-radius: 0 4px 4px 0;
}

.loop-step-num {
  font-family: var(--font-serif);
  font-size: 12px;
  color: var(--color-gold-400);
  letter-spacing: 3px;
  margin-bottom: 12px;
}

.loop-step-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 8px;
}

.loop-step-subtitle {
  font-size: 13px;
  color: var(--color-gold-300);
  margin-bottom: 16px;
}

.loop-step-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 16px;
}

.loop-step-list li {
  font-size: 12px;
  color: var(--color-text-muted);
  padding-left: 12px;
  position: relative;
  line-height: 1.5;
}

.loop-step-list li::before {
  content: '·';
  position: absolute;
  left: 2px;
  color: var(--color-gold-400);
}

.loop-step-output {
  padding-top: 12px;
  border-top: 1px dashed var(--color-border);
  font-size: 11px;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.loop-step-output strong {
  color: var(--color-gold-400);
  font-weight: 500;
}

.loop-values {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.loop-value {
  text-align: center;
  padding: 24px;
}

.loop-value-num {
  font-family: var(--font-serif);
  font-size: 32px;
  color: var(--color-gold-400);
  margin-bottom: 8px;
  font-weight: 600;
}

.loop-value-label {
  font-size: 14px;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.loop-value-desc {
  font-size: 12px;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* 3层14域模型体系 */
.model-system-section {
  margin-bottom: 100px;
}

.model-3layer {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 60px;
}

.model-layer {
  padding: 28px 32px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: all var(--transition-base);
}

.model-layer:hover {
  border-color: rgba(201, 169, 98, 0.4);
}

.model-layer-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 20px;
}

.model-layer-tag {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 700;
  color: var(--color-gold-400);
  padding: 4px 12px;
  border: 1px solid var(--color-gold-400);
  border-radius: 2px;
}

.model-layer-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
}

.model-layer-desc {
  font-size: 12px;
  color: var(--color-text-muted);
  margin-left: auto;
  font-style: italic;
}

.model-domains {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.model-layer.l2 .model-domains {
  grid-template-columns: repeat(6, 1fr);
}

.model-layer.l1 .model-domains {
  grid-template-columns: repeat(4, 1fr);
}

.model-domain {
  padding: 14px 12px;
  background: rgba(201, 169, 98, 0.04);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  text-align: center;
  transition: all var(--transition-fast);
}

.model-domain:hover {
  background: rgba(201, 169, 98, 0.1);
  border-color: var(--color-gold-400);
}

.model-domain-num {
  font-size: 10px;
  color: var(--color-gold-400);
  margin-bottom: 4px;
  letter-spacing: 1px;
}

.model-domain-name {
  font-size: 13px;
  color: var(--color-text-primary);
  font-weight: 500;
}

/* 训练路径 */
.training-path {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
  padding: 28px;
  background: rgba(15, 31, 61, 0.4);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.training-step {
  padding: 10px 20px;
  background: rgba(201, 169, 98, 0.08);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  font-size: 13px;
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

.training-step:hover {
  border-color: var(--color-gold-400);
  color: var(--color-gold-300);
}

.training-arrow {
  color: var(--color-gold-400);
  font-size: 14px;
}

/* 训练方法矩阵 */
.training-matrix {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.training-method {
  padding: 28px 24px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: all var(--transition-base);
  border-top: 2px solid var(--color-gold-400);
}

.training-method:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
}

.training-method-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 10px;
}

.training-method-title span {
  color: var(--color-gold-400);
  font-size: 13px;
  margin-left: 4px;
}

.training-method-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* 部署与安全架构 */
.security-section {
  margin-bottom: 40px;
}

.security-principles {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 48px;
}

.security-principle {
  padding: 32px 28px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  text-align: center;
  transition: all var(--transition-base);
}

.security-principle:hover {
  border-color: rgba(201, 169, 98, 0.4);
  transform: translateY(-4px);
}

.security-principle-num {
  font-family: var(--font-serif);
  font-size: 13px;
  color: var(--color-gold-400);
  letter-spacing: 3px;
  margin-bottom: 16px;
}

.security-principle-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 12px;
}

.security-principle-desc {
  font-size: 13px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

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

.security-layer {
  padding: 24px 20px;
  background: rgba(15, 31, 61, 0.5);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.security-layer-title {
  font-family: var(--font-serif);
  font-size: 15px;
  color: var(--color-gold-400);
  margin-bottom: 12px;
  font-weight: 600;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--color-border);
}

.security-layer-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.security-layer-list li {
  font-size: 12px;
  color: var(--color-text-secondary);
  line-height: 1.5;
  padding-left: 12px;
  position: relative;
}

.security-layer-list li::before {
  content: '·';
  position: absolute;
  left: 2px;
  color: var(--color-gold-400);
}

/* ============================================
   应用场景
   ============================================ */
.scenarios-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}

.scenario-card {
  padding: 36px 28px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.scenario-card::before {
  content: attr(data-num);
  position: absolute;
  top: 20px;
  right: 24px;
  font-family: var(--font-serif);
  font-size: 42px;
  font-weight: 700;
  color: rgba(201, 169, 98, 0.06);
  line-height: 1;
}

.scenario-card:hover {
  transform: translateY(-6px);
  border-color: rgba(201, 169, 98, 0.4);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
}

.scenario-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--color-gold-400);
}

.scenario-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 20px;
}

.scenario-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.scenario-list li {
  font-size: 13px;
  color: var(--color-text-secondary);
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}

.scenario-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-gold-400);
  font-size: 10px;
  top: 1px;
}

/* 实施流程 */
.implementation-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 32px;
  background: linear-gradient(135deg, rgba(201, 169, 98, 0.05), rgba(15, 31, 61, 0.6));
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.implementation-step {
  padding: 10px 20px;
  background: rgba(10, 22, 40, 0.6);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  font-size: 13px;
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

.implementation-step:hover {
  border-color: var(--color-gold-400);
  color: var(--color-gold-300);
}

.implementation-arrow {
  color: var(--color-gold-400);
  font-size: 12px;
}

.scenario-philosophy {
  text-align: center;
  margin-top: 36px;
  font-family: var(--font-serif);
  font-size: 16px;
  color: var(--color-gold-300);
  letter-spacing: 1px;
  line-height: 1.8;
}

/* ============================================
   案例展示
   ============================================ */
.cases-section {
  background: var(--color-navy-900);
}

.cases-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.case-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  overflow: hidden;
  transition: all var(--transition-base);
  display: flex;
  flex-direction: column;
}

.case-card:hover {
  border-color: rgba(201, 169, 98, 0.4);
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.case-card-header {
  padding: 28px 28px 20px;
  background: linear-gradient(135deg, rgba(201, 169, 98, 0.08), transparent);
  border-bottom: 1px solid var(--color-border);
}

.case-tag {
  display: inline-block;
  padding: 4px 12px;
  background: rgba(201, 169, 98, 0.1);
  color: var(--color-gold-400);
  font-size: 11px;
  letter-spacing: 2px;
  border-radius: 2px;
  margin-bottom: 12px;
}

.case-title {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  color: var(--color-text-primary);
  line-height: 1.4;
}

.case-card-body {
  padding: 28px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.case-desc {
  font-size: 14px;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

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

.case-stat {
  padding: 12px;
  text-align: center;
  background: rgba(10, 22, 40, 0.5);
  border-radius: 2px;
  border: 1px solid var(--color-border);
}

.case-stat-num {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-gold-400);
  line-height: 1.2;
  margin-bottom: 4px;
}

.case-stat-label {
  font-size: 11px;
  color: var(--color-text-muted);
  line-height: 1.4;
}

.case-findings {
  padding-top: 16px;
  border-top: 1px dashed var(--color-border);
}

.case-findings-title {
  font-size: 12px;
  color: var(--color-gold-400);
  letter-spacing: 2px;
  margin-bottom: 10px;
}

.case-findings-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.case-findings-list li {
  font-size: 13px;
  color: var(--color-text-secondary);
  padding-left: 16px;
  position: relative;
  line-height: 1.6;
}

.case-findings-list li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--color-gold-400);
  font-size: 10px;
  top: 1px;
}

/* 养宠立法特殊样式 */
.case-pet-laws .case-stats {
  grid-template-columns: 1fr;
  gap: 12px;
}

.pet-law-item {
  padding: 14px;
  background: rgba(10, 22, 40, 0.5);
  border: 1px solid var(--color-border);
  border-radius: 2px;
}

.pet-law-name {
  font-size: 13px;
  color: var(--color-text-primary);
  font-weight: 500;
  margin-bottom: 8px;
}

.pet-law-metrics {
  display: flex;
  gap: 16px;
}

.pet-law-metric {
  flex: 1;
  text-align: center;
}

.pet-law-metric-val {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--color-gold-400);
}

.pet-law-metric-label {
  font-size: 10px;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* 专业趋势排名 */
.case-profession .case-stats {
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.profession-ranking {
  padding: 16px;
  background: rgba(10, 22, 40, 0.5);
  border: 1px solid var(--color-border);
  border-radius: 2px;
}

.profession-ranking-title {
  font-size: 12px;
  color: var(--color-gold-400);
  margin-bottom: 10px;
  font-weight: 500;
  letter-spacing: 1px;
  text-align: center;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.profession-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
}

.profession-list li {
  display: flex;
  justify-content: space-between;
  color: var(--color-text-secondary);
  padding: 2px 0;
}

.profession-list li .rank {
  color: var(--color-gold-400);
  font-family: var(--font-mono);
  width: 20px;
}

.profession-list li .name {
  flex: 1;
  margin-left: 8px;
}

.profession-list li .score {
  color: var(--color-gold-300);
  font-weight: 500;
  font-family: var(--font-mono);
}

/* ============================================
   结尾 CTA
   ============================================ */
.closing-section {
  position: relative;
  padding: 160px 0;
  text-align: center;
  background:
    radial-gradient(ellipse at center, rgba(201, 169, 98, 0.08) 0%, transparent 70%),
    var(--color-navy-900);
  overflow: hidden;
}

.closing-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold-400), transparent);
}

.closing-content {
  max-width: 1500px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.closing-quote {
  font-family: var(--font-serif);
  font-size: clamp(22px, 2.9vw, 34px);
  font-weight: 300;
  line-height: 1.45;
  color: var(--color-text-primary);
  margin-bottom: 48px;
  letter-spacing: 1px;
}

.closing-quote-line {
  display: block;
  white-space: nowrap;
}

.closing-quote .accent {
  color: var(--color-gold-400);
  font-weight: 500;
}

.closing-divider {
  width: 80px;
  height: 1px;
  background: var(--color-gold-400);
  margin: 0 auto 36px;
}

.closing-brand {
  font-family: var(--font-serif);
  font-size: 24px;
  font-weight: 600;
  color: var(--color-gold-400);
  letter-spacing: 4px;
  margin-bottom: 8px;
}

.closing-tagline {
  font-size: 14px;
  color: var(--color-text-muted);
  letter-spacing: 3px;
}

/* ============================================
   联系我们 & Footer
   ============================================ */
.contact-section {
  padding: 100px 0 80px;
  background: var(--color-navy-800);
  border-top: 1px solid var(--color-border);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
}

.contact-info h3 {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 16px;
}

.contact-info p {
  font-size: 15px;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 32px;
  max-width: 480px;
}

.contact-items {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-item-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-gold-400);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  background: rgba(201, 169, 98, 0.05);
}

.contact-item-content {
  flex: 1;
}

.contact-item-label {
  font-size: 12px;
  color: var(--color-text-muted);
  letter-spacing: 1px;
  margin-bottom: 4px;
}

.contact-item-value {
  font-size: 15px;
  color: var(--color-text-primary);
}

.contact-form-card {
  padding: 36px 32px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
}

.contact-form-card h4 {
  font-family: var(--font-serif);
  font-size: 20px;
  color: var(--color-text-primary);
  margin-bottom: 8px;
  font-weight: 600;
}

.contact-form-card .form-subtitle {
  font-size: 13px;
  color: var(--color-text-muted);
  margin-bottom: 28px;
}

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

.form-group label {
  display: block;
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-bottom: 8px;
  letter-spacing: 1px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  background: rgba(10, 22, 40, 0.6);
  border: 1px solid var(--color-border);
  border-radius: 2px;
  color: var(--color-text-primary);
  font-size: 14px;
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-gold-400);
  background: rgba(10, 22, 40, 0.8);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

footer {
  padding: 40px 0;
  background: var(--color-navy-900);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-logo {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 600;
  color: var(--color-text-primary);
  letter-spacing: 3px;
}

.footer-copy {
  font-size: 12px;
  color: var(--color-text-muted);
  letter-spacing: 1px;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer-links a {
  font-size: 12px;
  color: var(--color-text-muted);
  letter-spacing: 1px;
}

.footer-links a:hover {
  color: var(--color-gold-400);
}

/* ============================================
   滚动动画
   ============================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }

/* ============================================
   响应式
   ============================================ */
@media (max-width: 1024px) {
  :root {
    --section-padding: 80px;
  }

  .container {
    padding: 0 24px;
  }

  .nav-inner {
    padding: 0 24px;
  }

  .nav-links {
    display: none;
  }

  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    width: 100%;
    padding: 20px 24px 28px;
    background: rgba(10, 22, 40, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    gap: 0;
    z-index: 999;
  }

  body.theme-stellar .nav-links.active {
    background: rgba(10, 36, 99, 0.97);
  }

  body.theme-light .nav-links.active {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: 0 12px 32px rgba(15, 33, 64, 0.08);
  }

  .nav-links.active li {
    width: 100%;
  }

  .nav-links.active a {
    display: block;
    padding: 14px 0;
    font-size: 15px;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links.active a::after {
    display: none;
  }

  .nav-links-theme {
    padding-top: 16px;
  }

  .nav-links-theme .theme-switcher {
    width: 100%;
    justify-content: center;
    margin-left: 0;
  }

  .nav-mobile-toggle {
    display: flex;
  }

  .about-grid,
  .team-grid,
  .advisors-grid,
  .comparison-grid,
  .advantages-grid,
  .conduction-features,
  .closed-loop-flow,
  .loop-values,
  .training-matrix,
  .security-principles,
  .security-layers,
  .scenarios-grid,
  .cases-grid,
  .contact-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .partner-grid {
    grid-template-columns: 1fr;
  }

  .partner-divider {
    flex-direction: row;
    padding: 20px 0;
  }

  .partner-divider-line {
    width: 80px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-gold-400), transparent);
  }

  .social-science-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .members-grid {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    gap: 32px;
  }

  .conduction-7d {
    grid-template-columns: repeat(4, 1fr);
  }

  .conduction-step::after {
    display: none;
  }

  .model-domains,
  .model-layer.l2 .model-domains,
  .model-layer.l1 .model-domains {
    grid-template-columns: repeat(3, 1fr);
  }

  .arch-layer {
    grid-template-columns: 100px 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 60px;
  }

  .hero {
    min-height: auto;
    padding: 120px 0 80px;
  }

  .hero-title {
    font-size: 32px;
    white-space: normal;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn {
    justify-content: center;
  }

  .hero-stats {
    flex-wrap: wrap;
    gap: 24px;
    margin-top: 48px;
  }

  .about-grid,
  .team-grid,
  .advisors-grid,
  .comparison-grid,
  .advantages-grid,
  .conduction-features,
  .closed-loop-flow,
  .loop-values,
  .training-matrix,
  .security-principles,
  .security-layers,
  .scenarios-grid,
  .cases-grid,
  .contact-grid,
  .arch-infra {
    grid-template-columns: 1fr;
  }

  .advisor-card {
    flex-direction: column;
    text-align: center;
  }

  .advisors-grid.advisors-grid-two {
    grid-template-columns: 1fr;
  }

  .advisor-avatar {
    margin: 0 auto;
  }

  .social-science-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .conduction-7d {
    grid-template-columns: repeat(2, 1fr);
  }

  .model-domains,
  .model-layer.l2 .model-domains,
  .model-layer.l1 .model-domains {
    grid-template-columns: repeat(2, 1fr);
  }

  .arch-layer {
    grid-template-columns: 1fr;
  }

  .arch-layer-label {
    flex-direction: row;
    gap: 12px;
  }

  .partner-section {
    padding: 32px 20px;
  }

  .section-header {
    margin-bottom: 48px;
  }

  .case-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .case-pet-laws .case-stats,
  .case-profession .case-stats {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .closing-section {
    padding: 100px 0;
  }

  .closing-quote-line {
    white-space: normal;
  }

  .training-path,
  .implementation-flow,
  .partner-chain {
    gap: 8px;
  }

  .training-step,
  .implementation-step {
    padding: 8px 12px;
    font-size: 12px;
  }

  .arch-spindle-flow {
    gap: 6px;
  }

  .arch-spindle-item {
    font-size: 12px;
    padding: 4px 10px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 16px;
  }

  .nav-inner {
    padding: 0 16px;
  }

  .hero-title {
    font-size: 28px;
  }

  .section-title {
    font-size: 24px;
  }

  .hero-stat-num {
    font-size: 28px;
  }

  .social-science-grid {
    grid-template-columns: 1fr;
  }

  .case-stats {
    grid-template-columns: 1fr;
  }

  .model-domains,
  .model-layer.l2 .model-domains,
  .model-layer.l1 .model-domains {
    grid-template-columns: 1fr;
  }

  .conduction-7d {
    grid-template-columns: 1fr;
  }
}


/* ============================================
   主题切换 - 三主题 CSS 变量覆盖
   ============================================ */

/* 平滑过渡（主题切换时） */
body,
body::before,
body::after,
.navbar,
.about-card,
.team-card,
.tech-card,
.scenario-card,
.case-card,
.training-method,
.partner-item,
.advantage-card,
.contact-form input,
.contact-form textarea,
.contact-form select {
  transition: background-color 0.5s ease, background 0.5s ease, color 0.5s ease, border-color 0.5s ease, box-shadow 0.5s ease;
}

/* ---- 主题二：深邃星空 · 鲜明钴蓝 ---- */
body.theme-stellar {
  background: linear-gradient(160deg, #0A2463 0%, #1E40AF 40%, #2563EB 80%, #3B82F6 100%);
  background-color: #1E40AF;
}

body.theme-stellar::before {
  background:
    radial-gradient(ellipse at 15% 20%, rgba(255, 197, 61, 0.1) 0%, transparent 40%),
    radial-gradient(ellipse at 85% 75%, rgba(96, 165, 250, 0.3) 0%, transparent 55%),
    radial-gradient(ellipse at 50% 100%, rgba(59, 130, 246, 0.25) 0%, transparent 60%);
}

body.theme-stellar {
  --color-navy-900: #0A2463;
  --color-navy-800: #13317A;
  --color-navy-700: #1E40AF;
  --color-navy-600: #2563EB;
  --color-navy-500: #3B82F6;
  --color-navy-400: #60A5FA;

  --color-gold-100: #FFF8E7;
  --color-gold-200: #FFE9A8;
  --color-gold-300: #FFD76A;
  --color-gold-400: #FFC53D;
  --color-gold-500: #F5A623;
  --color-gold-600: #D48806;

  --color-gray-100: #F0F5FF;
  --color-gray-200: #D0DCF5;
  --color-gray-300: #9EB5E5;
  --color-gray-400: #6B8DCD;
  --color-gray-500: #476CB0;
  --color-gray-600: #2C4D8A;

  --color-accent: var(--color-gold-400);
  --color-text-primary: #FFFFFF;
  --color-text-secondary: #D6E4FF;
  --color-text-muted: #8DB0E8;
  --color-border: rgba(255, 197, 61, 0.25);
  --color-card-bg: rgba(255, 255, 255, 0.08);
  --color-card-hover: rgba(255, 255, 255, 0.14);
}

body.theme-stellar .navbar { background: rgba(10, 36, 99, 0.85); }
body.theme-stellar .navbar.scrolled {
  background: rgba(10, 36, 99, 0.95);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

/* 星点层（仅 stellar 主题显示） */
body.theme-stellar::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image:
    radial-gradient(1px 1px at 10% 20%, rgba(255, 197, 61, 0.6), transparent),
    radial-gradient(1px 1px at 30% 60%, rgba(255, 255, 255, 0.5), transparent),
    radial-gradient(1.5px 1.5px at 50% 15%, rgba(255, 232, 168, 0.7), transparent),
    radial-gradient(1px 1px at 70% 40%, rgba(255, 197, 61, 0.4), transparent),
    radial-gradient(1px 1px at 90% 70%, rgba(255, 255, 255, 0.45), transparent),
    radial-gradient(1px 1px at 20% 85%, rgba(255, 232, 168, 0.35), transparent),
    radial-gradient(1.5px 1.5px at 60% 90%, rgba(255, 197, 61, 0.6), transparent),
    radial-gradient(1px 1px at 80% 25%, rgba(255, 255, 255, 0.4), transparent),
    radial-gradient(1px 1px at 45% 55%, rgba(255, 215, 106, 0.3), transparent),
    radial-gradient(1px 1px at 15% 50%, rgba(255, 197, 61, 0.35), transparent),
    radial-gradient(1px 1px at 35% 30%, rgba(255, 232, 168, 0.3), transparent),
    radial-gradient(1.5px 1.5px at 75% 60%, rgba(255, 255, 255, 0.4), transparent),
    radial-gradient(1px 1px at 95% 35%, rgba(255, 197, 61, 0.45), transparent),
    radial-gradient(1px 1px at 5% 75%, rgba(255, 215, 106, 0.3), transparent),
    radial-gradient(1px 1px at 55% 35%, rgba(255, 232, 168, 0.35), transparent);
  pointer-events: none;
  z-index: 0;
}

/* ---- 主题三：明亮通透 · 纯白商务 ---- */
body.theme-light {
  background-color: #FFFFFF;
}

body.theme-light::before {
  background:
    radial-gradient(ellipse at 20% 0%, rgba(36, 68, 112, 0.04) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 100%, rgba(230, 179, 92, 0.05) 0%, transparent 50%);
}

body.theme-light {
  --color-navy-900: #0F2140;
  --color-navy-800: #1A3358;
  --color-navy-700: #244470;
  --color-navy-600: #2E5288;
  --color-navy-500: #3D65A0;
  --color-navy-400: #5A7FB8;

  --color-gold-100: #FFF5E0;
  --color-gold-200: #FFE6B3;
  --color-gold-300: #FFD27A;
  --color-gold-400: #E6B35C;
  --color-gold-500: #C4913A;
  --color-gold-600: #9C7028;

  --color-gray-100: #FFFFFF;
  --color-gray-200: #F5F7FA;
  --color-gray-300: #E4E8EE;
  --color-gray-400: #C4CCD8;
  --color-gray-500: #8A95A6;
  --color-gray-600: #5A6678;

  --color-accent: var(--color-navy-700);
  --color-text-primary: #0F2140;
  --color-text-secondary: #3A4A66;
  --color-text-muted: #7A88A0;
  --color-border: rgba(15, 33, 64, 0.08);
  --color-card-bg: #FFFFFF;
  --color-card-hover: #FFFFFF;
}

body.theme-light .navbar { background: rgba(255, 255, 255, 0.85); }
body.theme-light .navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 24px rgba(15, 33, 64, 0.06);
}

body.theme-light .team-card:hover { box-shadow: 0 20px 60px rgba(15, 33, 64, 0.08); }
body.theme-light .tech-card:hover { box-shadow: 0 16px 40px rgba(15, 33, 64, 0.07); }
body.theme-light .training-method:hover { box-shadow: 0 12px 32px rgba(15, 33, 64, 0.06); }
body.theme-light .scenario-card:hover { box-shadow: 0 12px 32px rgba(15, 33, 64, 0.06); }
body.theme-light .case-card:hover { box-shadow: 0 16px 40px rgba(15, 33, 64, 0.07); }
body.theme-light .advantage-card:hover { box-shadow: 0 12px 32px rgba(15, 33, 64, 0.06); }
body.theme-light .partner-item:hover { box-shadow: 0 8px 24px rgba(15, 33, 64, 0.06); }

/* ---- 主题切换按钮 ---- */
.theme-switcher {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  margin-left: 12px;
}

.theme-switcher-btn {
  padding: 6px 14px;
  font-size: 12px;
  font-family: var(--font-sans);
  color: var(--color-text-secondary);
  background: transparent;
  border: none;
  border-radius: 100px;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  line-height: 1.4;
}

.theme-switcher-btn:hover {
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.06);
}

.theme-switcher-btn.active {
  color: #0A1628;
  background: var(--color-gold-400);
  font-weight: 600;
}

body.theme-light .theme-switcher-btn.active {
  color: #FFFFFF;
  background: var(--color-navy-700);
}

body.theme-stellar .theme-switcher-btn.active {
  color: #0A2463;
  background: var(--color-gold-400);
}

body.theme-light .theme-switcher {
  background: rgba(15, 33, 64, 0.04);
}

body.theme-light .theme-switcher-btn:hover {
  background: rgba(15, 33, 64, 0.06);
}

/* 移动端响应式 */
@media (max-width: 960px) {
  .theme-switcher {
    display: none;
  }
  .theme-switcher-mobile {
    display: flex !important;
    margin: 20px 0 12px;
    justify-content: center;
  }
}

.theme-switcher-mobile {
  display: none;
}