/* ============================================================
   网格共振 MeshMotive · Warm & Bold Design System
   ============================================================ */

/* ---- Design Tokens ---- */
:root {
  --color-bg-dark: #1A0F0A;
  --color-bg-warm: #FFF8F0;
  --color-surface: #FFFFFF;
  --color-surface-warm: #FFEEDB;

  --color-text-primary: #1A0F0A;
  --color-text-secondary: #7A6553;
  --color-text-muted: #B09780;
  --color-text-on-dark: #F5EDE5;
  --color-text-on-dark-muted: #C4B09D;

  --color-accent: #E8751A;
  --color-accent-hover: #F58634;
  --color-accent-glow: rgba(232, 117, 26, 0.2);
  --color-accent-subtle: rgba(232, 117, 26, 0.08);
  --color-gold: #F5A623;
  --color-gold-light: #FFD898;

  --color-border: #E8DDD2;
  --color-border-dark: rgba(245, 237, 229, 0.12);

  --font-sans-cn: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-sans-en: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --max-width: 1200px;
  --content-padding: 2rem;
  --section-spacing: 8rem;
  --section-spacing-mobile: 4.5rem;
  --card-radius: 16px;
  --nav-height: 68px;

  --ease-out: cubic-bezier(0.33, 1, 0.68, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans-cn);
  color: var(--color-text-primary);
  background: var(--color-bg-warm);
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; border: none; cursor: pointer; }

/* ---- Focus Style ---- */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ---- Utility ---- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--content-padding);
}

/* ---- Typography ---- */
.section-label {
  font-family: var(--font-sans-en);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
}

.section-desc {
  font-size: clamp(1rem, 1.5vw, 1.125rem);
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 640px;
}

/* ============================================================
   AMBIENT GLOW — decorative background elements
   ============================================================ */
.ambient-glow {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  filter: blur(80px);
  opacity: 0.35;
}
.ambient-glow-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
  top: -200px;
  right: -150px;
}
.ambient-glow-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--color-gold) 0%, transparent 70%);
  bottom: -200px;
  left: -100px;
}
.ambient-glow-3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

/* ============================================================
   NAVIGATION
   ============================================================ */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  background: rgba(26, 15, 10, 0.75);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: box-shadow 0.3s var(--ease-out);
}
.site-nav.scrolled {
  box-shadow: 0 1px 0 var(--color-border-dark);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans-en);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--color-text-on-dark);
}
.nav-brand-cn {
  font-family: var(--font-sans-cn);
  font-weight: 700;
}
.nav-brand-sep {
  color: var(--color-text-on-dark-muted);
  margin: 0 0.2rem;
}
.nav-brand-en {
  font-weight: 500;
  color: var(--color-gold-light);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-link {
  color: var(--color-text-on-dark-muted);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-link:hover {
  color: var(--color-text-on-dark);
}

/* Language switcher */
.nav-lang-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  font-family: var(--font-sans-en);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-on-dark-muted);
  border: 1px solid var(--color-border-dark);
  transition: all 0.25s var(--ease-out);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.nav-lang-switch:hover {
  color: var(--color-text-on-dark);
  border-color: rgba(245, 237, 229, 0.3);
  background: rgba(255,255,255,0.05);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans-cn);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.7rem 1.75rem;
  border-radius: 10px;
  transition: all 0.3s var(--ease-out);
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent), var(--color-gold));
  color: #fff;
  box-shadow: 0 4px 16px rgba(232, 117, 26, 0.25);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(232, 117, 26, 0.35);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-on-dark);
  border: 1px solid rgba(245, 237, 229, 0.2);
}
.btn-secondary:hover {
  border-color: rgba(245, 237, 229, 0.4);
  background: rgba(255, 255, 255, 0.04);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-on-dark-muted);
  padding: 0.7rem 0.5rem;
}
.btn-ghost:hover {
  color: var(--color-text-on-dark);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-dark);
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

/* Deep warm glow gradient overlay on hero */
.hero::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 70%;
  background: linear-gradient(to top, var(--color-bg-warm) 0%, transparent 40%, transparent 100%);
  z-index: 1;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 117, 26, 0.12) 0%, transparent 60%);
  top: -200px;
  left: -200px;
  z-index: 0;
  pointer-events: none;
  animation: heroGlowPulse 8s ease-in-out infinite alternate;
}
.hero-glow-2 {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(245, 166, 35, 0.08) 0%, transparent 60%);
  bottom: -100px;
  right: -100px;
  z-index: 0;
  pointer-events: none;
  animation: heroGlowPulse 10s ease-in-out infinite alternate-reverse;
}

@keyframes heroGlowPulse {
  0% { opacity: 0.6; transform: scale(1); }
  100% { opacity: 1; transform: scale(1.15); }
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 900px;
  padding: 0 var(--content-padding);
  padding-top: var(--nav-height);
}

.hero-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans-en);
  font-size: clamp(0.8rem, 1vw, 0.9rem);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-gold-light);
  margin-bottom: 2.5rem;
  padding: 0.45rem 1.2rem;
  border: 1px solid rgba(255, 216, 152, 0.15);
  border-radius: 100px;
  backdrop-filter: blur(4px);
}

.hero-title {
  font-size: clamp(2.2rem, 6vw, 4.2rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--color-text-on-dark);
  margin-bottom: 1.5rem;
}

.hero-title-accent {
  background: linear-gradient(135deg, var(--color-accent), var(--color-gold), var(--color-gold-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradientShift 4s ease-in-out infinite alternate;
}

@keyframes gradientShift {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

.hero-sub {
  font-size: clamp(1rem, 1.5vw, 1.2rem);
  line-height: 1.75;
  color: var(--color-text-on-dark-muted);
  max-width: 680px;
  margin: 0 auto 3rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  color: var(--color-text-on-dark-muted);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  opacity: 0.5;
  animation: scrollPulse 3s ease-in-out infinite;
}
.hero-scroll-indicator-line {
  width: 1px;
  height: 36px;
  background: linear-gradient(to bottom, var(--color-gold-light), transparent);
}

@keyframes scrollPulse {
  0%, 100% { opacity: 0.4; transform: translateX(-50%) translateY(0); }
  50% { opacity: 0.8; transform: translateX(-50%) translateY(4px); }
}

/* ============================================================
   SECTION BASE
   ============================================================ */
section {
  position: relative;
}

.section-warm {
  background: var(--color-bg-warm);
  color: var(--color-text-primary);
}
.section-dark {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
}

.section-padding {
  padding: var(--section-spacing) 0;
}

/* ---- Reveal Animation (enhanced) ---- */
.reveal {
  opacity: 0;
  transform: translateY(32px) scale(0.97);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.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; }
.reveal-delay-5 { transition-delay: 0.5s; }

/* ---- Decorative corner accent ---- */
.section-corner {
  position: absolute;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.3;
  filter: blur(60px);
}
.section-corner-tl {
  top: -80px;
  left: -80px;
  background: radial-gradient(circle, var(--color-accent) 0%, transparent 70%);
}
.section-corner-br {
  bottom: -80px;
  right: -80px;
  background: radial-gradient(circle, var(--color-gold) 0%, transparent 70%);
}

/* ============================================================
   SECTION 2 · 问题 — Spotlight
   ============================================================ */
.problems-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 3rem;
}

/* 每个卡片基准样式 */
.problem-card {
  background: var(--color-surface);
  border-radius: var(--card-radius);
  padding: 2rem;
  box-shadow: 0 1px 3px rgba(26, 15, 10, 0.04);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
  transition: all 0.45s var(--ease-out);
}
.problem-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
  opacity: 0;
  transition: opacity 0.4s;
}
.problem-card:hover::before {
  opacity: 1;
}

/* Spotlight 模式开启时 */
.problems-grid.spotlight-on .problem-card:not(.spotlight-hover) {
  opacity: 0.12;
  filter: blur(2px) grayscale(0.5);
  transform: scale(0.94);
}
.problems-grid.spotlight-on .problem-card.spotlight-hover {
  transform: scale(1.04);
  box-shadow: 0 24px 56px rgba(232, 117, 26, 0.14), 0 8px 20px rgba(0,0,0,0.06);
  border-color: var(--color-accent);
  z-index: 3;
}
.problem-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
  opacity: 0;
  transition: opacity 0.3s;
}
.problem-card:hover::before {
  opacity: 1;
}
.problem-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(232, 117, 26, 0.08), 0 4px 12px rgba(0,0,0,0.04);
}

.problem-card-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--color-accent-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.3rem;
}

.problem-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}
.problem-card p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* ============================================================
   SECTION 3 · 中间那条轨道
   ============================================================ */
.positioning-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
}

.positioning-text .section-title {
  color: var(--color-text-on-dark);
}
.positioning-text .section-desc {
  color: var(--color-text-on-dark-muted);
  max-width: 100%;
}

.positioning-diagram {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--card-radius);
  padding: 2.5rem 2rem;
  position: relative;
  overflow: hidden;
}
.positioning-diagram::before {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 117, 26, 0.06) 0%, transparent 70%);
  top: -100px;
  right: -100px;
  pointer-events: none;
}

.diagram-svg {
  width: 100%;
  height: auto;
}

.diagram-caption {
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-on-dark-muted);
  margin-top: 1rem;
}

/* ============================================================
   SECTION 4 · 我们的方法 — Timeline
   ============================================================ */
.approach-intro {
  margin-bottom: 3rem;
}

.timeline {
  position: relative;
  margin-top: 3rem;
}

/* 垂直进度线 */
.timeline-track {
  position: absolute;
  left: 24px;
  top: 0;
  width: 2px;
  height: 100%;
  background: var(--color-border);
  z-index: 0;
  border-radius: 2px;
}
.timeline-track-fill {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 0;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-gold));
  border-radius: 2px;
  transition: height 0.1s linear;
}

/* 每一步 */
.timeline-step {
  position: relative;
  padding-left: 64px;
  padding-bottom: 2.5rem;
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.timeline-step.visible {
  opacity: 1;
  transform: translateX(0);
}
.timeline-step:last-child {
  padding-bottom: 0;
}

/* 圆点 */
.timeline-dot {
  position: absolute;
  left: 12px;
  top: 10px;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  transition: all 0.5s var(--ease-bounce);
}
.timeline-step.active .timeline-dot {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 6px rgba(232, 117, 26, 0.12);
}
.timeline-dot-inner {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
  transition: background 0.4s;
}
.timeline-step.active .timeline-dot-inner {
  background: var(--color-accent);
}

/* 步骤编号 */
.timeline-step-num {
  display: inline-block;
  font-family: var(--font-sans-en);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 0.4rem;
  text-transform: uppercase;
}

/* Timeline 内 approach-item 微调 */
.timeline-content .approach-item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 2rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}

/* 层主题插画 — 桌面端右下角绝对定位 */
.approach-illustration {
  position: absolute;
  right: 1rem;
  bottom: 1rem;
  width: 80px;
  height: 80px;
  opacity: 0.4;
  pointer-events: none;
  transition: opacity 0.4s, transform 0.4s var(--ease-out);
  z-index: 0;
}
.timeline-content .approach-item:hover .approach-illustration {
  opacity: 0.7;
  transform: scale(1.08);
}
.approach-illustration svg {
  width: 100%;
  height: 100%;
}
/* 确保文字在插图之上 */
.timeline-content .approach-layer,
.timeline-content .approach-stages {
  position: relative;
  z-index: 1;
}
.timeline-content .approach-item:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(232, 117, 26, 0.06);
  border-color: rgba(232, 117, 26, 0.15);
}
.timeline-content .approach-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
  opacity: 0;
  transition: opacity 0.4s;
}
.timeline-content .approach-item:hover::before {
  opacity: 1;
}

.timeline-content .approach-layer {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.timeline-content .approach-layer-name {
  font-size: 1.15rem;
  font-weight: 700;
}
.timeline-content .approach-layer-name::before {
  display: none;
}
.timeline-content .approach-layer-sub {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 500;
  margin-left: 0;
}

/* Stage 动画 —— 展开效果 */
.timeline-content .approach-stages {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.timeline-content .approach-stage {
  padding: 1rem 1.25rem;
  border-radius: 10px;
  background: var(--color-bg-warm);
  border: 1px solid var(--color-border);
  transition: all 0.5s var(--ease-out);
  position: relative;
  overflow: hidden;
}
.timeline-content .approach-stage.init-stage::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--color-accent);
  border-radius: 0 2px 2px 0;
}
.timeline-content .approach-stage.future-stage::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--color-gold);
  border-radius: 0 2px 2px 0;
  opacity: 0.4;
}
.timeline-content .approach-stage.future-stage {
  opacity: 0.65;
}
.timeline-content .approach-stage-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}
.timeline-content .approach-stage-label.initial { color: var(--color-accent); }
.timeline-content .approach-stage-label.future { color: var(--color-text-muted); }
.timeline-content .approach-stage p {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

/* ============================================================
   SECTION 5 · 策略与优势
   ============================================================ */
.advantages-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 3rem;
}

.advantage-card {
  background: var(--color-surface);
  border-radius: var(--card-radius);
  padding: 2rem;
  border: 1px solid var(--color-border);
  transition: transform 0.4s var(--ease-bounce), box-shadow 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}
.advantage-card::after {
  content: '';
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--color-accent-subtle) 0%, transparent 70%);
  bottom: -40px;
  right: -40px;
  pointer-events: none;
}
.advantage-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(232, 117, 26, 0.06);
}

.advantage-card-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-gold));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.4rem;
  color: #fff;
}

.advantage-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}
.advantage-card p {
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
}

/* ============================================================
   SECTION 6 · 市场与时机
   ============================================================ */
#market {
  background: linear-gradient(180deg, var(--color-bg-dark) 0%, #22150E 50%, var(--color-bg-dark) 100%);
}

.market-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}

.market-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border-dark);
  border-radius: var(--card-radius);
  padding: 2rem 1.5rem;
  text-align: center;
  transition: all 0.4s var(--ease-out);
  position: relative;
  overflow: hidden;
}
.market-card::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background: radial-gradient(circle at 50% 0%, rgba(232, 117, 26, 0.06) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.4s;
}
.market-card:hover::before {
  opacity: 1;
}
.market-card:hover {
  border-color: rgba(232, 117, 26, 0.2);
  transform: translateY(-4px);
}

.market-number {
  font-family: var(--font-sans-en);
  font-size: clamp(1.75rem, 2.5vw, 2.5rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-accent), var(--color-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
  position: relative;
  z-index: 1;
}

.market-card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--color-text-on-dark);
  position: relative;
  z-index: 1;
}
.market-card p {
  font-size: 0.82rem;
  line-height: 1.6;
  color: var(--color-text-on-dark-muted);
  position: relative;
  z-index: 1;
}

/* ============================================================
   SECTION 7 · 团队
   ============================================================ */
.team-intro {
  max-width: 640px;
  margin-bottom: 3rem;
  font-size: 1.05rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
}

.team-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.team-card {
  background: var(--color-surface);
  border-radius: var(--card-radius);
  padding: 2rem;
  border: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  transition: transform 0.4s var(--ease-bounce), box-shadow 0.4s var(--ease-out);
}
.team-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 40px rgba(232, 117, 26, 0.08);
}

.team-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent-subtle), rgba(245, 166, 35, 0.08));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-sans-en);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 1rem;
  flex-shrink: 0;
  position: relative;
  overflow: hidden;
}
.team-avatar-initial {
  position: absolute;
  z-index: 1;
}
.team-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  border-radius: 50%;
}
.team-avatar img.loaded {}
.team-avatar img.error {
  opacity: 0;
  pointer-events: none;
}

.team-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.15rem;
}
.team-card .team-role {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}
.team-card .team-bio {
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  flex: 1;
}

.team-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-top: 1rem;
}
.team-tag {
  font-size: 0.7rem;
  font-weight: 500;
  padding: 0.25rem 0.7rem;
  border-radius: 100px;
  background: var(--color-accent-subtle);
  color: var(--color-accent);
  border: 1px solid rgba(232, 117, 26, 0.12);
}

/* ============================================================
   SECTION 8 · 愿景 + 约见
   ============================================================ */
#cta {
  background: linear-gradient(180deg, var(--color-bg-dark) 0%, #1A0F0A 100%);
  position: relative;
  overflow: hidden;
}
#cta::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(232, 117, 26, 0.06) 0%, transparent 70%);
  top: -200px;
  right: -200px;
  pointer-events: none;
}

.cta-vision {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.85;
  color: var(--color-text-on-dark-muted);
  max-width: 720px;
  margin-bottom: 3rem;
  padding: 2rem 2rem 2rem 2.5rem;
  border-left: 3px solid var(--color-accent);
  background: rgba(255,255,255,0.02);
  border-radius: 0 var(--card-radius) var(--card-radius) 0;
  position: relative;
  z-index: 1;
}

.cta-divider {
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-gold));
  margin: 0 0 2rem;
  border-radius: 2px;
}

.cta-heading {
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
  color: var(--color-text-on-dark);
}

.cta-contact {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.cta-contact-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--color-text-on-dark-muted);
  font-size: 0.95rem;
  transition: all 0.3s var(--ease-out);
  padding: 0.5rem 1rem;
  border: 1px solid transparent;
  border-radius: 8px;
}
.cta-contact-item:hover {
  color: var(--color-text-on-dark);
  border-color: var(--color-border-dark);
  background: rgba(255,255,255,0.03);
}
.cta-contact-item-icon {
  font-size: 1rem;
  opacity: 0.6;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-bg-dark);
  border-top: 1px solid var(--color-border-dark);
  padding: 2rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-brand {
  font-family: var(--font-sans-en);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-text-on-dark-muted);
}
.footer-brand-cn {
  font-family: var(--font-sans-cn);
}

.footer-legal {
  font-size: 0.8rem;
  color: var(--color-text-on-dark-muted);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablet */
@media (max-width: 1023px) {
  .positioning-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .market-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .team-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .timeline-step {
    padding-left: 48px;
  }
  .timeline-track {
    left: 16px;
  }
  .timeline-dot {
    left: 4px;
    width: 24px;
    height: 24px;
  }
  .timeline-content .approach-item {
    grid-template-columns: 1fr;
    gap: 1rem;
    padding: 1rem;
  }
  .approach-illustration {
    display: none;
  }
  .timeline-content .approach-stages {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

/* Mobile */
@media (max-width: 767px) {
  :root {
    --content-padding: 1.25rem;
    --section-spacing: var(--section-spacing-mobile);
  }

  .site-nav {
    padding: 0 1.25rem;
  }
  .nav-brand { font-size: 0.95rem; }
  .nav-brand-sep,
  .nav-brand-en { display: none; }
  .nav-link { display: none; }
  .nav-actions .btn { font-size: 0.85rem; padding: 0.5rem 1rem; }

  .hero-title { font-size: clamp(1.8rem, 8vw, 2.5rem); }
  .hero-sub { font-size: 0.95rem; }

  .problems-grid,
  .advantages-grid { grid-template-columns: 1fr; }

  .market-grid { grid-template-columns: 1fr 1fr; gap: 1rem; }
  .market-card { padding: 1.25rem 1rem; }

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

  .timeline-content .approach-stages { grid-template-columns: 1fr; gap: 0.75rem; }

  .cta-contact { flex-direction: column; align-items: flex-start; }

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

@media (max-width: 479px) {
  .market-grid { grid-template-columns: 1fr; }
}