/* ============================================
   企业财税痛点深度解析 — 样式表
   美学：机构级财税情报报告
   ============================================ */

:root {
  --color-navy: #0B1D3A;
  --color-navy-light: #132d54;
  --color-navy-dark: #061224;
  --color-parchment: #F4EFE6;
  --color-parchment-dark: #E8E0D4;
  --color-gold: #C4A035;
  --color-gold-light: #D4B84A;
  --color-gold-dim: rgba(196, 160, 53, 0.15);
  --color-danger: #A62626;
  --color-danger-light: #C43A3A;
  --color-danger-dim: rgba(166, 38, 38, 0.12);
  --color-success: #1B5E4B;
  --color-success-dim: rgba(27, 94, 75, 0.12);
  --color-text: #1a1a2e;
  --color-text-muted: #5a6270;
  --color-text-light: #8a919c;
  --color-border: rgba(11, 29, 58, 0.12);
  --color-white: #ffffff;

  --font-serif: 'Noto Serif SC', 'Songti SC', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', sans-serif;
  --font-mono: 'JetBrains Mono', 'Consolas', monospace;

  --header-height: 64px;
  --container-max: 1140px;
  --section-pad: clamp(3rem, 6vw, 5rem);
  --radius: 4px;
  --radius-lg: 8px;
  --shadow: 0 4px 24px rgba(11, 29, 58, 0.08);
  --shadow-lg: 0 12px 48px rgba(11, 29, 58, 0.14);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-parchment);
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* 背景纹理 */
.noise-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.035;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 180px;
}

.grid-overlay {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    linear-gradient(135deg, transparent 48%, rgba(196, 160, 53, 0.04) 49%, rgba(196, 160, 53, 0.04) 51%, transparent 52%),
    linear-gradient(45deg, transparent 48%, rgba(11, 29, 58, 0.02) 49%, rgba(11, 29, 58, 0.02) 51%, transparent 52%);
  background-size: 60px 60px;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 2rem);
  position: relative;
  z-index: 1;
}

/* ========== 顶栏 ========== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(11, 29, 58, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(196, 160, 53, 0.2);
  z-index: 1000;
  transition: box-shadow var(--transition);
}

.site-header.scrolled {
  box-shadow: var(--shadow-lg);
}

.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1rem, 3vw, 2rem);
  height: 100%;
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  color: var(--color-white);
  flex-shrink: 0;
}

.logo-mark {
  width: 36px;
  height: 36px;
  background: var(--color-gold);
  color: var(--color-navy);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
}

.logo-text {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
}

.main-nav {
  display: flex;
  gap: 0.25rem;
  flex: 1;
  overflow-x: auto;
  scrollbar-width: none;
}

.main-nav::-webkit-scrollbar { display: none; }

.main-nav a {
  color: rgba(255, 255, 255, 0.75);
  text-decoration: none;
  font-size: 0.8rem;
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius);
  white-space: nowrap;
  transition: color var(--transition), background var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-gold);
  background: rgba(196, 160, 53, 0.1);
}

.btn-export {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-gold);
  color: var(--color-navy);
  border: none;
  padding: 0.5rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: background var(--transition), transform var(--transition);
}

.btn-export:hover {
  background: var(--color-gold-light);
  transform: translateY(-1px);
}

.btn-export:disabled {
  opacity: 0.6;
  cursor: wait;
  transform: none;
}

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

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-white);
  transition: var(--transition);
}

/* ========== Hero ========== */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 3rem;
  padding: calc(var(--header-height) + 3rem) clamp(1.25rem, 4vw, 2rem) 4rem;
  max-width: var(--container-max);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 1.5rem;
}

.hero-title {
  font-family: var(--font-serif);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.title-line {
  display: block;
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  color: var(--color-navy);
}

.title-line.accent {
  color: var(--color-danger);
}

.hero-subtitle {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 2.5vw, 1.5rem);
  color: var(--color-navy-light);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.hero-company {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-bottom: 2.5rem;
  padding-left: 1rem;
  border-left: 3px solid var(--color-gold);
}

.hero-stats {
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
}

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

.stat-num {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-navy);
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.3rem;
}

/* 轨道视觉 */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.orbit-ring {
  position: relative;
  width: 320px;
  height: 320px;
}

.orbit-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100px;
  height: 100px;
  background: var(--color-navy);
  color: var(--color-gold);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 0.85rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--color-gold);
}

.orbit-item {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 56px;
  height: 56px;
  margin: -28px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--color-navy);
  box-shadow: var(--shadow);
  transform: rotate(calc(var(--i) * 72deg)) translateY(-140px) rotate(calc(var(--i) * -72deg));
  animation: orbit-pulse 4s ease-in-out infinite;
  animation-delay: calc(var(--i) * 0.3s);
}

@keyframes orbit-pulse {
  0%, 100% { box-shadow: var(--shadow); }
  50% { box-shadow: 0 0 0 4px var(--color-gold-dim), var(--shadow); }
}

/* ========== Section 通用 ========== */
.section {
  padding: var(--section-pad) 0;
  position: relative;
  z-index: 1;
}

.section-dark {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.88);
}

.section-dark .section-lead,
.section-dark .body-text {
  color: rgba(255, 255, 255, 0.7);
}

.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--color-white);
}

.section-alt {
  background: var(--color-parchment-dark);
}

.section-header {
  margin-bottom: 3rem;
  max-width: 720px;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold);
  margin-bottom: 0.75rem;
}

.section-dark .section-tag {
  color: var(--color-gold-light);
}

.section-tag-num {
  font-size: 0.85rem;
  font-weight: 600;
}

.section-header h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--color-navy);
  margin-bottom: 0.75rem;
  line-height: 1.25;
}

.section-dark .section-header h2 {
  color: var(--color-white);
}

.section-lead {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  line-height: 1.8;
}

.subsection-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-navy);
  margin: 2.5rem 0 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-gold);
  display: inline-block;
}

.section-dark .subsection-title {
  color: var(--color-white);
}

.body-text {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
  max-width: 800px;
}

/* ========== 统计卡片 ========== */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: border-color var(--transition);
}

.stat-card:hover {
  border-color: var(--color-gold);
}

.stat-card-num {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 600;
  color: var(--color-gold);
  display: block;
  line-height: 1;
  margin-bottom: 1rem;
}

.stat-card p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.7;
}

.stat-card strong {
  color: var(--color-gold-light);
}

/* ========== 警示条 ========== */
.alert-banner {
  display: flex;
  gap: 1.25rem;
  background: var(--color-gold-dim);
  border: 1px solid rgba(196, 160, 53, 0.3);
  border-left: 4px solid var(--color-gold);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.75rem;
  margin: 2rem 0;
}

.section-dark .alert-banner {
  background: rgba(196, 160, 53, 0.08);
}

.alert-banner-danger {
  background: var(--color-danger-dim);
  border-color: rgba(166, 38, 38, 0.3);
  border-left-color: var(--color-danger);
}

.alert-icon {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  background: var(--color-gold);
  color: var(--color-navy);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.alert-banner-danger .alert-icon {
  background: var(--color-danger);
  color: var(--color-white);
}

.alert-body strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1rem;
  margin-bottom: 0.4rem;
  color: var(--color-navy);
}

.section-dark .alert-body strong {
  color: var(--color-gold);
}

.alert-banner-danger .alert-body strong {
  color: var(--color-danger);
}

.alert-body p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.section-dark .alert-body p {
  color: rgba(255, 255, 255, 0.75);
}

/* ========== 双面板 ========== */
.dual-panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin: 2rem 0;
}

.panel-item {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.panel-num {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-gold);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.75rem;
}

.panel-item h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.panel-item p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.7;
}

.pull-quote {
  border-left: 3px solid var(--color-gold);
  padding: 1.25rem 0 1.25rem 1.5rem;
  margin: 2rem 0;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 800px;
}

.pull-quote-danger {
  border-left-color: var(--color-danger);
  color: var(--color-danger);
  background: var(--color-danger-dim);
  padding: 1.5rem;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  font-style: normal;
}

/* ========== 五大痛点导航 ========== */
.pain-nav-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.pain-card {
  display: block;
  text-decoration: none;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.25rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.pain-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-navy);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition);
}

.pain-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-gold);
}

.pain-card:hover::before {
  transform: scaleX(1);
  background: var(--color-gold);
}

.pain-card-accent {
  background: var(--color-navy);
  border-color: var(--color-navy);
}

.pain-card-accent .pain-num,
.pain-card-accent h3 {
  color: var(--color-gold);
}

.pain-card-accent p {
  color: rgba(255, 255, 255, 0.7);
}

.pain-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-gold);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.5rem;
}

.pain-card h3 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-navy);
  margin-bottom: 0.5rem;
}

.pain-card p {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ========== 税种层级 ========== */
.tax-layers {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.tax-layer {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  position: relative;
  overflow: hidden;
}

.tax-layer::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-navy), var(--color-gold));
}

.tax-layer-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.tax-layer-icon {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-navy);
  color: var(--color-gold);
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius);
  white-space: nowrap;
}

.tax-layer h3 {
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--color-navy);
}

.tax-layer p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.insight-box {
  background: var(--color-navy);
  color: rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  margin-bottom: 2.5rem;
  border-left: 4px solid var(--color-gold);
}

.insight-box strong {
  display: block;
  font-family: var(--font-serif);
  color: var(--color-gold);
  margin-bottom: 0.5rem;
}

/* ========== 政策缺口 ========== */
.policy-gap h3 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--color-navy);
  margin-bottom: 1rem;
}

.policy-gap-lead {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
}

.policy-stat {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.policy-stat-ring {
  position: relative;
  width: 120px;
  height: 120px;
  flex-shrink: 0;
}

.policy-stat-ring svg {
  width: 100%;
  height: 100%;
}

.policy-stat-num {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 600;
  color: var(--color-danger);
}

.policy-stat-text p {
  font-size: 1rem;
  color: var(--color-text-muted);
}

.policy-stat-text strong {
  color: var(--color-danger);
  font-family: var(--font-mono);
}

.policy-stat-sub {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* ========== 引用块 ========== */
.quote-block {
  text-align: center;
  padding: 2.5rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: 2rem;
}

.quote-block blockquote {
  font-family: var(--font-serif);
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  color: var(--color-danger);
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.quote-block p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ========== 后果卡片 ========== */
.consequence-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.consequence-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  border-top: 3px solid var(--color-navy);
}

.consequence-card-danger {
  border-top-color: var(--color-danger);
  background: var(--color-danger-dim);
}

.consequence-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-gold);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.5rem;
}

.consequence-card h4 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-navy);
  margin-bottom: 0.75rem;
}

.consequence-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

.wealth-alert {
  background: var(--color-danger);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
}

.wealth-alert h4 {
  font-family: var(--font-serif);
  margin-bottom: 0.75rem;
  color: var(--color-white);
}

.wealth-alert p {
  font-size: 0.95rem;
  opacity: 0.9;
  line-height: 1.7;
}

/* ========== 稽查机制 ========== */
.mechanism-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.mechanism-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  text-align: center;
  transition: border-color var(--transition);
}

.mechanism-card:hover {
  border-color: var(--color-gold);
}

.mechanism-icon {
  display: inline-block;
  background: var(--color-gold);
  color: var(--color-navy);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.4rem 0.8rem;
  border-radius: 20px;
  margin-bottom: 1rem;
}

.mechanism-card h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.mechanism-card p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

/* ========== 案例时间轴 ========== */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-gold), var(--color-danger));
}

.case-study {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
  page-break-inside: avoid;
}

.case-date {
  flex-shrink: 0;
  width: 60px;
  text-align: center;
  position: relative;
}

.case-date::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background: var(--color-gold);
  border-radius: 50%;
  border: 2px solid var(--color-navy);
  transform: translateX(-5px);
}

.case-year {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-gold);
}

.case-month {
  display: block;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
}

.case-body {
  flex: 1;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.case-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  background: var(--color-gold-dim);
  color: var(--color-gold);
  padding: 0.2rem 0.6rem;
  border-radius: 20px;
  margin-bottom: 0.5rem;
}

.case-tag-danger {
  background: var(--color-danger-dim);
  color: var(--color-danger-light);
}

.case-body h4 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

.case-source {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.45);
  margin-bottom: 0.75rem;
}

.case-body p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 0.75rem;
}

.case-result {
  background: rgba(166, 38, 38, 0.15);
  border-left: 3px solid var(--color-danger);
  padding: 0.75rem 1rem;
  border-radius: 0 var(--radius) var(--radius) 0;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.85);
}

.highlight-num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-gold);
  font-size: 1.1rem;
}

.highlight-danger {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--color-danger-light);
}

/* ========== 现金流 ========== */
.iron-rule {
  background: var(--color-navy);
  color: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 2rem;
  margin-bottom: 2rem;
  text-align: center;
}

.iron-rule-text {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.iron-rule-text strong {
  font-family: var(--font-mono);
  color: var(--color-gold);
  font-size: 1.4rem;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-pill {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  text-align: center;
}

.stat-pill-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 600;
  color: var(--color-navy);
  margin-bottom: 0.4rem;
}

.stat-pill-label {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.scissors-diagram {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: stretch;
  margin: 2rem 0;
}

.scissor-side {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.scissor-expense {
  border-top: 3px solid var(--color-danger);
}

.scissor-income {
  border-top: 3px solid var(--color-success);
}

.scissor-side h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-navy);
  margin-bottom: 0.5rem;
}

.scissor-side p {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.scissor-center {
  display: flex;
  align-items: center;
  justify-content: center;
  writing-mode: vertical-rl;
  font-family: var(--font-serif);
  font-weight: 700;
  color: var(--color-gold);
  font-size: 0.9rem;
  letter-spacing: 0.2em;
}

/* ========== 破局之道 ========== */
.solution-pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
  margin: 2rem 0 3rem;
}

.pillar-card {
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: border-color var(--transition), transform var(--transition);
}

.pillar-card:hover {
  border-color: var(--color-gold);
  transform: translateY(-3px);
}

.pillar-icon {
  display: inline-flex;
  width: 48px;
  height: 48px;
  background: var(--color-gold);
  color: var(--color-navy);
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.2rem;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.pillar-card h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  margin-bottom: 0.75rem;
}

.pillar-card p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.6;
}

.solution-detail {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.solution-detail h3 {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  color: var(--color-gold);
  margin-bottom: 1.5rem;
}

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.benefit-card {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.benefit-card-gold {
  border-color: rgba(196, 160, 53, 0.3);
  background: rgba(196, 160, 53, 0.06);
}

.benefit-card h4 {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--color-gold);
  margin-bottom: 1rem;
}

.benefit-card ul {
  list-style: none;
}

.benefit-card li {
  font-size: 0.88rem;
  color: rgba(255, 255, 255, 0.75);
  padding: 0.4rem 0;
  padding-left: 1rem;
  border-left: 2px solid rgba(196, 160, 53, 0.3);
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.benefit-card li strong {
  color: var(--color-white);
}

.principle-box {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  background: var(--color-success-dim);
  border: 1px solid rgba(27, 94, 75, 0.3);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
}

.principle-icon {
  font-size: 1.2rem;
  flex-shrink: 0;
}

.principle-box p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.8);
}

.management-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.mgmt-section {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.mgmt-section h4 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  color: var(--color-gold);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(196, 160, 53, 0.2);
}

.mgmt-item {
  margin-bottom: 1.25rem;
}

.mgmt-item:last-child {
  margin-bottom: 0;
}

.mgmt-item strong {
  display: block;
  font-size: 0.9rem;
  color: var(--color-white);
  margin-bottom: 0.3rem;
}

.mgmt-item p {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.6;
}

/* ========== CTA 总结 ========== */
.cta-section {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  color: var(--color-white);
  text-align: center;
}

.cta-content {
  max-width: 720px;
  margin: 0 auto;
}

.cta-content h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  color: var(--color-white);
  margin-bottom: 1.5rem;
}

.cta-content > p {
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.cta-call {
  background: rgba(196, 160, 53, 0.12);
  border: 1px solid rgba(196, 160, 53, 0.3);
  border-radius: var(--radius-lg);
  padding: 1.75rem 2rem;
  text-align: left;
  margin-bottom: 2rem;
}

.cta-call strong {
  display: block;
  font-family: var(--font-serif);
  color: var(--color-gold);
  margin-bottom: 0.5rem;
}

.cta-call p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
}

.cta-quote {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-style: italic;
  color: var(--color-gold);
  border: none;
  padding: 0;
}

/* ========== 页脚 ========== */
.site-footer {
  background: var(--color-navy-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 3rem 0;
  text-align: center;
  position: relative;
  z-index: 1;
}

.site-footer h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-white);
  margin-bottom: 1rem;
}

.footer-principles {
  font-size: 0.95rem;
  color: var(--color-gold);
  margin-bottom: 1rem;
}

.footer-principles .sep {
  margin: 0 0.5rem;
  opacity: 0.5;
}

.footer-text {
  font-size: 0.9rem;
  max-width: 560px;
  margin: 0 auto 1.5rem;
  line-height: 1.7;
}

.footer-company {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.1em;
}

/* ========== 滚动动画 ========== */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
  transition-delay: var(--delay, 0s);
}

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

/* Hero 首屏直接显示 */
.hero .reveal {
  opacity: 1;
  transform: none;
}

/* ========== 响应式 ========== */
@media (max-width: 1024px) {
  .pain-nav-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .pain-card:nth-child(4),
  .pain-card:nth-child(5) {
    grid-column: span 1;
  }

  .solution-pillars,
  .mechanism-grid,
  .tax-layers {
    grid-template-columns: 1fr;
  }

  .benefit-grid,
  .management-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
    margin-left: auto;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-navy);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid rgba(196, 160, 53, 0.2);
    box-shadow: var(--shadow-lg);
  }

  .main-nav.open {
    display: flex;
  }

  .main-nav a {
    padding: 0.75rem 1rem;
    font-size: 0.9rem;
  }

  .btn-export span,
  .btn-export svg + * {
    display: none;
  }

  .btn-export {
    padding: 0.5rem 0.65rem;
  }

  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: calc(var(--header-height) + 2rem);
  }

  .hero-visual {
    order: -1;
  }

  .orbit-ring {
    width: 260px;
    height: 260px;
  }

  .orbit-item {
    transform: rotate(calc(var(--i) * 72deg)) translateY(-110px) rotate(calc(var(--i) * -72deg));
  }

  .stat-grid,
  .dual-panel,
  .consequence-grid,
  .stat-row,
  .scissors-diagram {
    grid-template-columns: 1fr;
  }

  .scissor-center {
    writing-mode: horizontal-tb;
    padding: 0.5rem;
  }

  .pain-nav-grid {
    grid-template-columns: 1fr;
  }

  .policy-stat {
    flex-direction: column;
    text-align: center;
  }

  .case-study {
    flex-direction: column;
  }

  .timeline {
    padding-left: 1.5rem;
  }
}

/* ========== 打印 / PDF 样式 ========== */
@media print {
  .site-header,
  .nav-toggle,
  .btn-export,
  .noise-overlay,
  .grid-overlay {
    display: none !important;
  }

  body {
    background: white;
    color: #1a1a2e;
    font-size: 11pt;
  }

  .section-dark,
  .section-alt,
  .cta-section,
  .site-footer {
    background: white !important;
    color: #1a1a2e !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .section-dark h2,
  .section-dark h3,
  .section-dark h4,
  .section-dark p,
  .section-dark .section-lead,
  .section-dark .body-text,
  .cta-content h2,
  .cta-content p,
  .site-footer h3,
  .site-footer p {
    color: #1a1a2e !important;
  }

  .hero {
    min-height: auto;
    page-break-after: always;
    padding-top: 2rem;
  }

  .section {
    page-break-inside: avoid;
    padding: 1.5rem 0;
  }

  .stat-card,
  .case-study,
  .consequence-card,
  .pain-card,
  .tax-layer,
  .pillar-card,
  .benefit-card,
  .mgmt-section,
  .alert-banner,
  .iron-rule,
  .wealth-alert {
    page-break-inside: avoid;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }

  .orbit-ring {
    display: none;
  }

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

/* PDF 导出时临时类 */
.pdf-exporting .site-header {
  position: static;
}

.pdf-exporting .reveal {
  opacity: 1 !important;
  transform: none !important;
}

.pdf-exporting .noise-overlay,
.pdf-exporting .grid-overlay {
  display: none;
}