/* ============================================================
   GEECO 青稞新能源 · 集团官网设计系统
   Design Tokens + Components + Utilities
   品牌调性：温暖、接地气、有温度、有深度
   ============================================================ */

/* --- Design Tokens (CSS Variables) --- */
:root {
  /* Brand Colors */
  --geeco-orange: #F97316;
  --geeco-orange-dark: #EA580C;
  --geeco-orange-light: #FFF7ED;
  --geeco-orange-soft: #FFEDD5;
  --geeco-brand-red: #F23A1C;
  --geeco-leaf-green: #10B981;
  --geeco-leaf-light: #ECFDF5;
  --geeco-sky-blue: #0EA5E9;
  --geeco-sky-light: #F0F9FF;

  /* Pink-Purple Gradient Accent */
  --geeco-purple: #A855F7;
  --geeco-purple-dark: #7C3AED;
  --geeco-purple-light: #F3E8FF;
  --geeco-pink: #EC4899;
  --geeco-pink-light: #FCE7F3;
  --geeco-gradient: linear-gradient(90deg, #EF525D 25%, #D34A85 60%, #AF40B8 100%);
  --geeco-gradient-soft: linear-gradient(90deg, rgba(239,82,93,0.10) 25%, rgba(211,74,133,0.10) 60%, rgba(175,64,184,0.10) 100%);
  --geeco-gradient-text: linear-gradient(90deg, #EF525D 25%, #D34A85 60%, #AF40B8 100%);

  /* Brand Tri-Color (Primary) */
  --geeco-coral: #EF525D;
  --geeco-rose: #D34A85;
  --geeco-violet: #AF40B8;
  --geeco-coral-light: #FBE4E5;
  --geeco-rose-light: #FAE3EC;
  --geeco-violet-light: #F3E2F6;

  /* Neutrals - Warm Palette */
  --neutral-50: #FAFAF8;
  --neutral-100: #F5F4F1;
  --neutral-200: #E8E6E1;
  --neutral-300: #D1CEC6;
  --neutral-400: #9A9590;
  --neutral-500: #6B6560;
  --neutral-600: #44403C;
  --neutral-700: #2D2A26;
  --neutral-800: #1C1A18;
  --neutral-900: #0F0E0D;

  /* Semantic Colors */
  --bg-primary: #FFFFFF;
  --bg-secondary: var(--neutral-50);
  --bg-warm: linear-gradient(180deg, #FEFCFB 0%, #FFF7ED 100%);
  --text-primary: var(--neutral-800);
  --text-secondary: var(--neutral-500);
  --text-muted: var(--neutral-400);
  --border-color: var(--neutral-200);

  /* Typography Scale */
  --font-sans: "Alibaba PuHuiTi 2", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Helvetica Neue", sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Consolas", monospace;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --max-width: 1200px;
  --nav-height: 72px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 32px rgba(0,0,0,0.10);
  --shadow-xl: 0 20px 48px rgba(0,0,0,0.14);
  --shadow-orange: 0 8px 24px rgba(249,115,22,0.20);
  --shadow-gradient: 0 8px 24px rgba(239,82,93,0.20);
  --shadow-hero: 0 30px 80px rgba(0,0,0,0.30);

  /* Transitions */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; transition: color var(--duration-fast); }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.625rem); }
h4 { font-size: 1.125rem; }

p { line-height: 1.8; }

.text-gradient-orange {
  background: var(--geeco-gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }

/* --- Container --- */
.container {
  max-width: var(--max-width);
  width: 100%;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}
.container--narrow { max-width: 900px; }
.container--wide { max-width: 1400px; }

/* --- Section Base --- */
.section {
  padding: var(--space-5xl) 0;
  position: relative;
}
.section--warm { background: linear-gradient(180deg, #FAFAF8 0%, #FDF4FF 100%); }
.section--alt { background-color: var(--neutral-50); }
.section--orange-tint { background-color: var(--geeco-rose-light); }
.section--green-tint { background-color: var(--geeco-leaf-light); }
.section--dark {
  background: linear-gradient(180deg, #0F0E0D 0%, #1C1A18 100%);
  color: rgba(255,255,255,0.8);
}
.section--dark .section-header h2 { color: #FFFFFF; }
.section--dark .section-header p { color: rgba(255,255,255,0.6); }
.section--dark .section-header .label {
  color: var(--geeco-coral);
  background: rgba(239,82,93,0.15);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}
.section-header .label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--geeco-violet);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  background: var(--geeco-rose-light);
}
.section-header h2 { margin-bottom: var(--space-md); }
.section-header p { color: var(--text-secondary); font-size: 1.05rem; }

/* --- Navigation --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  transition: all var(--duration-normal) var(--ease-out);
  backdrop-filter: blur(0px);
  background: transparent;
}
.navbar.scrolled {
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid rgba(0,0,0,0.05);
}
.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}
.nav-logo { position: relative; display: inline-block; }
.nav-logo img {
  height: 38px;
  transition: transform var(--duration-normal);
}
.nav-logo--light { display: none; }
.nav-logo--dark { display: block; }
.navbar.home-hero .nav-logo--light { display: block; }
.navbar.home-hero .nav-logo--dark { display: none; }
.navbar.scrolled .nav-logo--light { display: none; }
.navbar.scrolled .nav-logo--dark { display: block; }
.nav-logo:hover img { transform: scale(1.03); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}
.nav-links a {
  padding: 8px 16px;
  font-size: 0.93rem;
  font-weight: 500;
  color: rgba(255,255,255,0.75);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast);
  white-space: nowrap;
}
.navbar.scrolled .nav-links a {
  color: var(--neutral-600);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--geeco-coral);
  background: rgba(239,82,93,0.1);
}
.navbar.home-hero .nav-links a:hover,
.navbar.home-hero .nav-links a.active {
  color: #fff;
  background: rgba(255,255,255,0.18);
}
.navbar.scrolled .nav-links a:hover,
.navbar.scrolled .nav-links a.active {
  color: var(--geeco-violet);
  background: var(--geeco-rose-light);
}

.nav-dropdown {
  position: relative;
}
.nav-dropdown .dropdown-menu {
  position: absolute;
  top: calc(var(--nav-height) / 2 + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  opacity: 0;
  visibility: hidden;
  min-width: 220px;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--space-sm) 0;
  z-index: 100;
  transition: all var(--duration-normal) var(--ease-out);
}
.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}
.dropdown-menu a {
  display: block;
  padding: 10px 20px;
  font-size: 0.9rem;
  color: var(--neutral-600);
  border-radius: 0;
}
.dropdown-menu a:hover {
  background: var(--geeco-orange-light);
  color: var(--geeco-orange-dark);
}

.nav-cta {
  padding: 10px 22px !important;
  background: var(--geeco-orange) !important;
  color: white !important;
  border-radius: var(--radius-full) !important;
  font-weight: 600 !important;
  transition: all var(--duration-fast) !important;
  box-shadow: var(--shadow-orange);
}
.nav-cta:hover {
  background: var(--geeco-orange-dark) !important;
  transform: translateY(-1px);
  box-shadow: 0 10px 28px rgba(249,115,22,0.30) !important;
}

.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  cursor: pointer;
  z-index: 1001;
}
.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: rgba(255,255,255,0.8);
  border-radius: 2px;
  transition: all var(--duration-normal);
}
.navbar.scrolled .mobile-toggle span {
  background: var(--neutral-700);
}
.mobile-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--geeco-coral);
}
.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}
.mobile-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--geeco-violet);
}

/* --- Hero Section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(ellipse at 25% 15%, rgba(168,85,247,0.15) 0%, transparent 55%),
    radial-gradient(ellipse at 75% 85%, rgba(236,72,153,0.12) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 50%, rgba(249,115,22,0.06) 0%, transparent 70%),
    linear-gradient(175deg, #0F0E0D 0%, #1C1A18 35%, #2D2A26 70%, #1C1A18 100%);
  padding-top: var(--nav-height);
}

.hero__bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.03;
  background-image:
    repeating-linear-gradient(45deg, transparent, transparent 80px, currentColor 80px, currentColor 81px),
    repeating-linear-gradient(-45deg, transparent, transparent 80px, currentColor 80px, currentColor 81px);
  pointer-events: none;
  color: white;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero__content {
  animation: fadeInUp 0.8s var(--ease-out) both;
}
.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: var(--radius-full);
  font-size: 0.83rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  margin-bottom: var(--space-lg);
  backdrop-filter: blur(10px);
}
.hero__badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--geeco-coral);
  animation: pulse-dot 2s infinite;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  margin-bottom: var(--space-lg);
  line-height: 1.1;
  color: #FFFFFF;
  font-weight: 800;
  letter-spacing: -0.03em;
}
.hero h1 .highlight {
  background: var(--geeco-gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__desc {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.65);
  margin-bottom: var(--space-2xl);
  max-width: 520px;
  line-height: 1.85;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.hero__visual {
  position: relative;
  animation: fadeInUp 0.8s 0.2s var(--ease-out) both;
}
.hero__visual-img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-hero);
  object-fit: cover;
  aspect-ratio: 16/10;
  max-height: 520px;
  width: 100%;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.1);
}
.hero__visual-float {
  position: absolute;
  bottom: -20px;
  left: -30px;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(20px);
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  box-shadow: var(--shadow-hero);
  display: flex;
  align-items: center;
  gap: var(--space-md);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--neutral-700);
  animation: float 4s ease-in-out infinite;
  border: 1px solid rgba(255,255,255,0.2);
}
.hero__visual-float-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: var(--geeco-gradient-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--geeco-coral);
  font-size: 1.15rem;
  flex-shrink: 0;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 30px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-out);
  white-space: nowrap;
}
.btn--primary {
  background: var(--geeco-gradient);
  color: white;
  box-shadow: var(--shadow-gradient);
}
.btn--primary:hover {
  background: linear-gradient(90deg, #EF525D 25%, #D34A85 60%, #AF40B8 100%);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(239,82,93,0.30);
}
.btn--outline {
  border: 2px solid rgba(255,255,255,0.25);
  color: rgba(255,255,255,0.9);
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(10px);
}
.btn--outline:hover {
  border-color: var(--geeco-coral);
  color: var(--geeco-coral);
  background: rgba(239,82,93,0.08);
  transform: translateY(-2px);
}
.btn--ghost {
  color: var(--geeco-violet);
  background: transparent;
}
.btn--ghost:hover {
  background: var(--geeco-rose-light);
}
.btn--sm {
  padding: 8px 20px;
  font-size: 0.87rem;
}
.btn--lg {
  padding: 17px 36px;
  font-size: 1.05rem;
}

/* --- Cards --- */
.card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  border: 1px solid var(--border-color);
  transition: all var(--duration-normal) var(--ease-out);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--geeco-gradient);
  opacity: 0;
  transition: opacity var(--duration-normal);
}
.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
  border-color: transparent;
}
.card:hover::before { opacity: 1; }
.card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-lg);
  background: var(--geeco-gradient-soft);
  color: var(--geeco-coral);
  flex-shrink: 0;
}
.card__icon--green {
  background: var(--geeco-leaf-light);
  color: var(--geeco-leaf-green);
}
.card__icon--blue {
  background: var(--geeco-sky-light);
  color: var(--geeco-sky-blue);
}
.card h4 { margin-bottom: var(--space-sm); color: var(--neutral-800); }
.card p { font-size: 0.94rem; color: var(--text-secondary); }

/* Card with image on top */
.card--media {
  padding: 0;
}
.card--media img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.card--media .card-body {
  padding: var(--space-xl);
}

/* Feature card (icon + content, no bg border) */
.feature-card {
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  transition: all var(--duration-normal);
}
.feature-card:hover { transform: translateY(-6px); }
.feature-card__icon {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto var(--space-lg);
  font-size: 1.8rem;
  background: var(--geeco-gradient-soft);
  border: 1px solid var(--geeco-rose-light);
}
.feature-card h4 { margin-bottom: var(--space-sm); }
.feature-card p { font-size: 0.91rem; color: var(--text-secondary); }

/* --- Grid Systems --- */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-xl); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-xl); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-xl); }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--space-xl); }

/* --- Problem → Solution Strip --- */
.problems-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.problem-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
  transition: all var(--duration-normal);
}
.problem-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--geeco-orange);
  opacity: 0;
  transition: opacity var(--duration-normal);
}
.problem-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}
.problem-card:hover::before { opacity: 1; }
.problem-card__emoji { font-size: 2.5rem; margin-bottom: var(--space-md); }
.problem-card__problem {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--neutral-700);
  margin-bottom: var(--space-xs);
}
.problem-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}
.problem-card__solution {
  font-size: 0.89rem;
  font-weight: 600;
  color: var(--geeco-orange-dark);
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background: var(--geeco-orange-light);
  display: inline-block;
}

/* --- Differentiation Comparison (per-row label + 2 columns) --- */
.diff {
  max-width: 1100px;
  margin: 0 auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #fff;
  box-shadow: var(--shadow-sm);
}
.diff__head {
  display: grid;
  grid-template-columns: 1fr 1fr;
}
.diff__head-col {
  padding: var(--space-lg) var(--space-xl);
  font-weight: 700;
  font-size: 1.05rem;
}
.diff__head-col--others {
  background: var(--neutral-50);
  color: var(--neutral-600);
  border-bottom: 1px solid var(--border-color);
}
.diff__head-col--us {
  background: linear-gradient(90deg, var(--geeco-orange-light), #FFFDF9);
  color: var(--geeco-orange-dark);
  border-bottom: 2px solid var(--geeco-orange-soft);
}
.diff__item { border-bottom: 1px solid var(--border-color); }
.diff__item:last-child { border-bottom: none; }
.diff__item-label {
  padding: 10px var(--space-xl);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: var(--neutral-100);
}
.diff__body { display: grid; grid-template-columns: 1fr 1fr; }
.diff__cell {
  padding: var(--space-md) var(--space-xl);
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--neutral-700);
}
.diff__cell--others { color: var(--text-secondary); }
.diff__cell--us {
  font-weight: 600;
  color: var(--neutral-800);
  background: var(--geeco-orange-light);
}

/* --- Tech Stack Grid --- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}
.tech-item {
  background: white;
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  border: 1px solid var(--border-color);
  transition: all var(--duration-normal);
  position: relative;
  overflow: hidden;
}
.tech-item:hover {
  border-color: var(--geeco-orange-soft);
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}
.tech-item__num {
  position: absolute;
  top: 16px;
  right: 20px;
  font-size: 2.5rem;
  font-weight: 900;
  color: var(--neutral-100);
  line-height: 1;
}
.tech-item__tag {
  display: inline-block;
  font-size: 0.73rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--geeco-orange-dark);
  margin-bottom: var(--space-sm);
}
.tech-item h4 { font-size: 1.1rem; margin-bottom: var(--space-sm); }
.tech-item p { font-size: 0.88rem; color: var(--text-secondary); line-height: 1.65; }
.tech-specs {
  margin-top: var(--space-md);
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.tech-spec {
  font-size: 0.77rem;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  background: var(--neutral-100);
  color: var(--text-secondary);
  font-weight: 500;
}

/* --- Stats Row --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}
.stat-item { padding: var(--space-lg); }
.stat-number {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 900;
  background: var(--geeco-gradient-text);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.1;
  display: block;
}
.stat-unit { font-size: 0.45em; font-weight: 700; }
.stat-label { font-size: 0.9rem; color: var(--text-secondary); margin-top: 4px; }

/* --- Quote / Testimonial --- */
.quote-block {
  max-width: 750px;
  margin: 0 auto;
  text-align: center;
  padding: var(--space-3xl);
  background: white;
  border-radius: var(--radius-xl);
  border-left: 4px solid var(--geeco-coral);
  box-shadow: var(--shadow-md);
  position: relative;
}
.quote-block blockquote {
  font-size: 1.2rem;
  font-style: italic;
  color: var(--neutral-700);
  line-height: 1.8;
  margin-bottom: var(--space-lg);
}
.quote-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  font-size: 0.93rem;
}
.quote-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--geeco-gradient-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--geeco-coral);
  font-size: 1.1rem;
}

/* --- Team Member Card --- */
.team-member {
  text-align: center;
  padding: var(--space-xl);
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  transition: all var(--duration-normal);
}
.team-member:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}
.team-photo {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  margin: 0 auto var(--space-lg);
  background: var(--geeco-gradient-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--geeco-rose);
}
.team-name { font-size: 1.1rem; font-weight: 700; margin-bottom: 4px; }
.team-role { font-size: 0.88rem; color: var(--geeco-violet); font-weight: 600; margin-bottom: var(--space-sm); }
.team-desc { font-size: 0.86rem; color: var(--text-secondary); line-height: 1.65; }

/* --- Timeline --- */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 0 auto;
  padding-left: 40px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 16px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--geeco-gradient);
  border-radius: 2px;
}
.timeline-item {
  position: relative;
  padding-bottom: var(--space-2xl);
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -32px;
  top: 4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--geeco-rose);
  border: 3px solid white;
  box-shadow: 0 0 0 3px var(--geeco-rose-light);
  z-index: 1;
}
.timeline-year {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--geeco-violet);
  margin-bottom: 4px;
}
.timeline-title { font-weight: 700; font-size: 1.05rem; margin-bottom: 4px; }
.timeline-desc { font-size: 0.9rem; color: var(--text-secondary); }

/* --- Partner Logos --- */
.partners-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3xl);
  flex-wrap: wrap;
}
.partner-logo {
  padding: var(--space-lg) var(--space-xl);
  border-radius: var(--radius-md);
  background: white;
  border: 1px solid var(--border-color);
  transition: all var(--duration-normal);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--neutral-400);
}
.partner-logo:hover {
  border-color: var(--geeco-rose-light);
  box-shadow: var(--shadow-md);
  color: var(--neutral-600);
}

/* --- News List --- */
.news-list { display: flex; flex-direction: column; gap: var(--space-lg); }
.news-item {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-xl);
  padding: var(--space-lg);
  background: white;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  transition: all var(--duration-normal);
  cursor: pointer;
}
.news-item:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--geeco-rose-light);
}
.news-date {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--geeco-violet);
  margin-bottom: var(--space-xs);
}
.news-title { font-weight: 700; font-size: 1.05rem; margin-bottom: var(--space-xs); }
.news-excerpt { font-size: 0.9rem; color: var(--text-secondary); }

/* --- Contact Info --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}
.contact-info-item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}
.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--geeco-gradient-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--geeco-coral);
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-label { font-size: 0.82rem; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; }
.contact-value { font-size: 1rem; font-weight: 600; color: var(--neutral-700); }

/* --- Footer --- */
.footer {
  background: var(--neutral-900);
  color: var(--neutral-300);
  padding: var(--space-4xl) 0 var(--space-xl);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}
.footer-brand p {
  font-size: 0.9rem;
  color: var(--neutral-400);
  margin-top: var(--space-md);
  line-height: 1.7;
  max-width: 340px;
}
.footer-brand .footer-logo { height: 34px; margin-bottom: var(--space-md); opacity: 0.9; }
.footer h5 {
  color: white;
  font-size: 0.92rem;
  margin-bottom: var(--space-lg);
  font-weight: 700;
}
.footer-links li { margin-bottom: 10px; }
.footer-links a {
  font-size: 0.88rem;
  color: var(--neutral-400);
  transition: color var(--duration-fast);
}
.footer-links a:hover { color: var(--geeco-coral); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.83rem;
  color: var(--neutral-500);
}

/* --- Sub-site Navigation Banner --- */
.subsite-banner {
  background: linear-gradient(90deg, var(--neutral-800) 0%, var(--neutral-900) 100%);
  color: white;
  padding: var(--space-3xl) 0;
}
.subsite-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}
.subsite-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  transition: all var(--duration-normal);
  cursor: pointer;
}
.subsite-card:hover {
  background: rgba(255,255,255,0.1);
  border-color: var(--geeco-coral);
  transform: translateY(-4px);
}
.subsite-card-icon { font-size: 2.5rem; margin-bottom: var(--space-md); }
.subsite-card h4 { color: white; margin-bottom: var(--space-sm); }
.subsite-card p { font-size: 0.87rem; color: var(--neutral-400); }
.subsite-tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--geeco-gradient);
  color: white;
  font-weight: 600;
  margin-top: var(--space-md);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.3); }
}

/* Scroll reveal classes */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}
.reveal.revealed {
  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; }

/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.flex { display: flex; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.hidden { display: none; }

/* --- Responsive Breakpoints --- */
@media (max-width: 1024px) {
  .hero .container { grid-template-columns: 1fr; text-align: center; }
  .hero__desc { max-width: 100%; margin: 0 auto var(--space-2xl); }
  .hero__actions { justify-content: center; }
  .hero__visual { max-width: 550px; margin: var(--space-xl) auto 0; }
  .hero__visual-float { left: auto; right: -10px; bottom: -15px; }

  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: repeat(2, 1fr); }
  .stats-row { grid-template-columns: repeat(2, 1fr); }
  .problems-strip { grid-template-columns: 1fr; max-width: 480px; margin: 0 auto; }

  .diff__head, .diff__body { grid-template-columns: 1fr; }
  .diff__cell--us { border-top: 1px solid var(--geeco-orange-soft); }

  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .subsite-grid { grid-template-columns: 1fr; max-width: 420px; margin: 0 auto; }

  .news-item { grid-template-columns: 180px 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  :root { --nav-height: 64px; }
  .section { padding: var(--space-3xl) 0; }
  .container { padding: 0 var(--space-lg); }

  .nav-links {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    height: calc(100dvh - var(--nav-height));
    background: rgba(15,14,13,0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: var(--space-xl) var(--space-lg);
    gap: var(--space-xs);
    overflow-y: auto;
    z-index: 999;
    box-sizing: border-box;
  }
  .nav-links.open {
    display: flex;
    animation: fadeInUp 0.3s var(--ease-out) both;
  }
  .nav-links.open a {
    color: rgba(255,255,255,0.95);
    font-size: 1.1rem;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    border-radius: 0;
    text-align: left;
    background: transparent;
    width: 100%;
  }
  .nav-links.open a:hover,
  .nav-links.open a.active {
    color: #fff;
    background: rgba(255,255,255,0.1);
  }
  .mobile-toggle { display: flex; }

  .grid-2, .grid-3, .grid-4, .tech-grid, .split { grid-template-columns: 1fr; }
  .split--reverse .split__media { order: 0; }
  .cta-banner { padding: var(--space-2xl) var(--space-lg); }
  .stats-row { grid-template-columns: repeat(2, 1fr); gap: var(--space-md); }

  .hero { min-height: auto; padding: calc(var(--nav-height) + var(--space-3xl)) 0 var(--space-3xl); }
  .hero .container { grid-template-columns: 1fr; gap: var(--space-2xl); text-align: center; }
  .hero__desc { margin-left: auto; margin-right: auto; }
  .hero__actions, .hero__trust { justify-content: center; }
  .hero__visual { max-width: 420px; margin: 0 auto; }
  .hero__visual-float--1 { right: -6px; }
  .hero__visual-float--2 { left: -6px; }

  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .footer-brand { display: flex; flex-direction: column; align-items: center; }
  .footer-brand p { max-width: 100%; }
  .footer-bottom { flex-direction: column; gap: var(--space-md); text-align: center; }

  .quote-block blockquote { font-size: 1rem; }
  .timeline { padding-left: 32px; }
}

@media (max-width: 480px) {
  html { font-size: 15px; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
  .stats-row { grid-template-columns: 1fr 1fr; }
}

/* --- Hero Floating Chips Positioning --- */
.hero__visual-float--1 { top: 24px; right: -28px; bottom: auto; left: auto; }
.hero__visual-float--2 { bottom: -20px; left: -30px; top: auto; right: auto; }

/* --- Split Text Cell --- */
.split__text { min-width: 0; }

/* --- Utility: Check List --- */
.check-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 12px; }
.check-list li {
  position: relative;
  padding-left: 32px;
  font-size: 0.96rem;
  color: var(--text-secondary);
  line-height: 1.6;
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 2px;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--geeco-gradient-soft);
  color: var(--geeco-rose);
  font-size: 0.75rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}

/* --- Hero Trust Strip --- */
.hero__trust {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: var(--space-xl);
  font-size: 0.9rem;
  color: var(--text-muted);
}
.hero__trust strong { color: var(--neutral-700); font-weight: 600; }

/* --- Inner Page Hero --- */
.page-hero {
  padding: calc(var(--nav-height) + var(--space-4xl)) 0 var(--space-3xl);
  background: linear-gradient(120deg, #EF525D 25%, #D34A85 60%, #AF40B8 100%);
  position: relative;
  overflow: hidden;
}
.page-hero::after {
  content: "";
  position: absolute;
  top: -20%; right: -10%;
  width: 480px; height: 480px;
  background: radial-gradient(circle, rgba(255,255,255,0.12) 0%, transparent 70%);
  pointer-events: none;
}
.page-hero__inner { max-width: 820px; position: relative; z-index: 1; }
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--space-lg);
}
.breadcrumb a:hover { color: #fff; }
.breadcrumb span { color: #fff; }
.page-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  margin-bottom: var(--space-md);
  line-height: 1.2;
  color: #FFFFFF;
}
.page-hero__desc {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.85);
  line-height: 1.8;
  max-width: 680px;
}
.page-hero .label {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  color: #FFFFFF;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
  padding: 4px 14px;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.2);
  backdrop-filter: blur(4px);
}

/* --- Split Section (image + text) --- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}
.split--reverse .split__media { order: 2; }
.split__media img {
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  width: 100%;
  object-fit: cover;
  aspect-ratio: 4/3;
}
.split--founder .split__media img {
  aspect-ratio: 4/5;
  object-fit: cover;
  object-position: center top;
}
.split h2 { margin-bottom: var(--space-lg); }
.split p { color: var(--text-secondary); margin-bottom: var(--space-md); }

/* --- CTA Banner (inner pages) --- */
.cta-banner {
  background: var(--geeco-gradient);
  border-radius: var(--radius-xl);
  padding: var(--space-3xl);
  text-align: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  pointer-events: none;
}
.cta-banner h2 { color: #fff; margin-bottom: var(--space-md); }
.cta-banner p { color: rgba(255,255,255,0.9); margin-bottom: var(--space-xl); }
.cta-banner .btn--outline { color: #fff; border-color: rgba(255,255,255,0.6); }
.cta-banner .btn--outline:hover { background: rgba(255,255,255,0.12); color: #fff; }

/* --- Article Content (news detail) --- */
.article-content { max-width: 720px; margin: 0 auto; }
.article-content p {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
}
.article-content strong { color: var(--neutral-800); font-weight: 600; }

/* ============================================================
   GEECO · 技术优势页 · Tab 切换 + BMS 均衡动效 + 合作伙伴 logo
   ============================================================ */

/* --- 差异化对比 Tab --- */
.tab-content { display: none; }
.tab-content.active { display: block; }
.tab-btn { font-family: inherit; }
.tab-btn:hover { color: var(--neutral-700); }
.tab-btn.active {
  color: var(--geeco-violet);
  border-bottom-color: var(--geeco-orange) !important;
}

/* --- Truth™BMS 电芯均衡动效 --- */
.bms-balance { background: #fff; border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: var(--space-xl) var(--space-xl) var(--space-lg); box-shadow: var(--shadow-md); }
.bms-balance__tag { display: inline-block; font-size: 0.78rem; font-weight: 700; color: var(--geeco-coral); background: var(--geeco-coral-light); padding: 4px 14px; border-radius: var(--radius-full); margin-bottom: var(--space-md); }

/* --- 三阶段指示器 --- */
.bms-balance__stages { display: flex; gap: 4px; margin-bottom: var(--space-lg); padding: 5px; background: var(--neutral-100); border-radius: var(--radius-full); width: fit-content; }
.bms-stage { padding: 6px 18px; font-size: 0.82rem; font-weight: 600; color: var(--text-muted); border-radius: var(--radius-full); background: transparent; border: none; cursor: pointer; font-family: inherit; transition: all 0.35s; }
.bms-stage:hover { color: var(--neutral-700); }
.bms-stage.active { background: var(--geeco-coral); color: #fff; box-shadow: 0 2px 8px rgba(239,82,93,0.25); }

/* --- 4 电芯网格 --- */
.bms-cells { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-lg); align-items: end; min-height: 300px; padding: var(--space-md) 0; }
.bms-cell { display: flex; flex-direction: column; align-items: center; gap: 6px; }
.bms-cell__top { display: flex; align-items: center; justify-content: center; }
.bms-cell__cap { display: flex; align-items: center; }
.bms-cell__num { width: 26px; height: 26px; border-radius: 50%; background: var(--neutral-200); color: var(--neutral-600); display: inline-flex; align-items: center; justify-content: center; font-size: 0.82rem; font-weight: 700; }
.bms-cell--base .bms-cell__num { background: var(--geeco-coral); color: #fff; box-shadow: 0 0 0 3px var(--geeco-coral-light); }
.bms-cell__bar { position: relative; width: 100%; max-width: 58px; background: #F5F5F5; border: 2px solid var(--neutral-300); border-radius: 12px 12px 6px 6px; overflow: hidden; }
.bms-cell--base .bms-cell__bar { border-color: var(--geeco-coral); background: #FFF5F5; }
.bms-cell__fill { position: absolute; left: 0; right: 0; bottom: 0; height: 100%; background: linear-gradient(180deg, #34D399 0%, #10B981 100%); border-radius: 0 0 4px 4px; transition: height 2.6s cubic-bezier(0.22, 0.61, 0.36, 1); }
.bms-cell--base .bms-cell__fill { background: linear-gradient(180deg, #FBBF24 0%, #F59E0B 100%); }
.bms-cell__eq-line { position: absolute; left: -6px; right: -6px; height: 0; border-top: 2px dashed var(--geeco-coral); opacity: 0; transition: opacity 0.5s; }
.bms-cell.is-balancing .bms-cell__eq-line { opacity: 1; }
.bms-cell.is-balanced .bms-cell__eq-line { opacity: 0; }
.bms-cell.is-balanced .bms-cell__fill { background: linear-gradient(180deg, #6EE7B7 0%, #34D399 100%); }
.bms-cell--base.is-balanced .bms-cell__fill { background: linear-gradient(180deg, #FDE68A 0%, #FBBF24 100%); }
.bms-cell__meta { display: flex; flex-direction: column; align-items: center; gap: 2px; }
.bms-cell__soc { font-size: 0.92rem; font-weight: 700; color: var(--neutral-800); transition: color 0.3s; }
.bms-cell.is-balanced .bms-cell__soc { color: #10B981; }
.bms-cell--base .bms-cell__soc { color: var(--geeco-coral); }
.bms-cell__soh { font-size: 0.72rem; color: var(--text-muted); }
.bms-cell--base .bms-cell__soh { color: var(--geeco-coral); font-weight: 600; }
.bms-balance__foot { margin-top: var(--space-lg); display: flex; flex-direction: column; gap: 12px; align-items: flex-start; }
.bms-replay { display: inline-flex; align-items: center; gap: 6px; padding: 8px 18px; border-radius: var(--radius-full); background: var(--geeco-coral-light); color: var(--geeco-coral); font-weight: 600; font-size: 0.88rem; transition: all 0.2s; border: none; cursor: pointer; font-family: inherit; }
.bms-replay:hover { background: #F8C9CC; }
.bms-balance__caption { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.7; margin: 0; }

/* --- 合作伙伴 logo 墙 --- */
.partner-logo {
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-lg) var(--space-xl);
}
.partner-logo img {
  height: 42px; width: auto;
  opacity: 0.65; filter: grayscale(1);
  transition: all var(--duration-normal);
}
.partner-logo:hover img { opacity: 1; filter: none; }

@media (max-width: 768px) {
  .bms-cells { gap: var(--space-sm); }
  .bms-cell__bar { max-width: 48px; height: 160px; }
}