/* ========================================
   企业官网 - 现代暗色主题
   基于 Aether 设计系统
   ======================================== */

/* === Design Tokens === */
:root {
  /* 背景 */
  --bg-base: #0A0B1A;
  --bg-radial-1: rgba(124, 58, 237, 0.16);
  --bg-radial-2: rgba(236, 72, 153, 0.12);
  --bg-radial-3: rgba(6, 182, 212, 0.09);
  --bg-grid: rgba(255, 255, 255, 0.025);

  /* 玻璃表面 */
  --surface-glass: rgba(255, 255, 255, 0.05);
  --surface-glass-strong: rgba(255, 255, 255, 0.08);
  --surface-glass-hover: rgba(255, 255, 255, 0.10);
  --hairline: rgba(255, 255, 255, 0.10);
  --hairline-strong: rgba(255, 255, 255, 0.16);

  /* 文字 */
  --text-primary: #F8FAFC;
  --text-secondary: rgba(248, 250, 252, 0.72);
  --text-tertiary: rgba(248, 250, 252, 0.50);
  --text-muted: rgba(248, 250, 252, 0.34);

  /* 强调色 */
  --accent-violet: #7C3AED;
  --accent-pink: #EC4899;
  --accent-cyan: #06B6D4;
  --accent-amber: #F59E0B;
  --accent-green: #10B981;

  /* 渐变 */
  --gradient-brand: linear-gradient(135deg, #7C3AED 0%, #EC4899 100%);
  --gradient-brand-soft: linear-gradient(135deg, rgba(124, 58, 237, 0.18) 0%, rgba(236, 72, 153, 0.14) 100%);
  --gradient-cyan-soft: linear-gradient(135deg, rgba(6, 182, 212, 0.20) 0%, rgba(124, 58, 237, 0.12) 100%);

  /* 兼容旧 CSS 变量名 */
  --color-primary: #F8FAFC;
  --color-accent: #7C3AED;
  --color-accent-hover: #8B5CF6;
  --color-accent-light: rgba(124, 58, 237, 0.15);
  --color-bg: #0A0B1A;
  --color-bg-alt: rgba(255, 255, 255, 0.03);
  --color-bg-dark: rgba(10, 11, 26, 0.95);
  --color-text: #F8FAFC;
  --color-text-light: rgba(248, 250, 252, 0.72);
  --color-text-muted: rgba(248, 250, 252, 0.50);
  --color-border: rgba(255, 255, 255, 0.10);
  --color-border-light: rgba(255, 255, 255, 0.06);
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;

  /* 排版 */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", "Fira Code", monospace;

  /* 间距 (保留旧变量) */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;

  /* 圆角 */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 999px;

  /* 阴影 */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.5);
  --shadow-glow-violet: 0 0 60px rgba(124, 58, 237, 0.3);
  --shadow-glow-pink: 0 0 80px rgba(236, 72, 153, 0.22);

  /* 过渡 */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);

  /* 容器 */
  --container-max: 1200px;
  --container-narrow: 900px;
  --nav-height: 72px;
  --container-pad-x: clamp(20px, 4vw, 48px);
  --section-pad-y: clamp(80px, 10vw, 140px);
}

/* === Google Fonts Import (Inter + JetBrains Mono) === */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;500&display=swap');

/* ============================================
   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);
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-primary);
  background: var(--bg-base);
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.4s var(--ease-out-quart), color 0.4s var(--ease-out-quart);
}

/* === Background Atmosphere === */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 18% 12%, var(--bg-radial-1) 0%, transparent 42%),
    radial-gradient(circle at 82% 28%, var(--bg-radial-2) 0%, transparent 38%),
    radial-gradient(circle at 50% 92%, var(--bg-radial-3) 0%, transparent 45%);
  pointer-events: none;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, var(--bg-grid) 1px, transparent 1px),
    linear-gradient(to bottom, var(--bg-grid) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(circle at center, black 0%, transparent 75%);
  -webkit-mask-image: radial-gradient(circle at center, black 0%, transparent 75%);
  pointer-events: none;
}

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

a:hover {
  color: var(--text-primary);
}

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

ul, ol {
  list-style: none;
}

/* === Container === */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-pad-x);
  padding-right: var(--container-pad-x);
}

.container-narrow {
  max-width: var(--container-narrow);
}

/* ============================================
   Navigation - Glass Navbar
   ============================================ */
.navbar {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: calc(100% - var(--container-pad-x) * 2);
  max-width: calc(var(--container-max) + 32px);
  height: auto;
  z-index: 1000;
  border-radius: var(--radius-xl);
  background: var(--surface-glass);
  border: 1px solid var(--hairline);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.32);
  transition: box-shadow var(--transition-base), background var(--transition-base);
}

.navbar.scrolled {
  background: var(--surface-glass-strong);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 16px 0 22px;
  max-width: none;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  white-space: nowrap;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.navbar-brand:hover {
  color: var(--text-primary);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 4px;
}

.navbar-links a {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color 0.2s, background 0.2s;
  position: relative;
}

.navbar-links a::after {
  display: none;
}

.navbar-links a:hover,
.navbar-links a.active {
  color: var(--text-primary);
  background: var(--surface-glass-strong);
}

/* Hamburger */
.navbar-toggle {
  display: none;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: var(--surface-glass);
  border: 1px solid var(--hairline);
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  z-index: 1001;
  flex-direction: column;
  gap: 5px;
  padding: 0;
}

.navbar-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
}

.navbar-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar-toggle.active span:nth-child(2) {
  opacity: 0;
}

.navbar-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Main Content
   ============================================ */
.main-content {
  flex: 1;
  margin-top: 0;
}

/* ============================================
   Page Hero (interior pages)
   ============================================ */
.page-hero {
  position: relative;
  padding: calc(80px + 64px) 0 clamp(60px, 8vw, 100px);
  text-align: center;
  overflow: hidden;
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 50% 30%, rgba(124, 58, 237, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 60%, rgba(236, 72, 153, 0.10) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: var(--spacing-md);
  position: relative;
  color: var(--text-primary);
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.page-hero p {
  font-size: clamp(1rem, 1.6vw, 1.125rem);
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  position: relative;
}

/* ============================================
   Home Hero
   ============================================ */
.home-hero {
  position: relative;
  padding: calc(80px + 64px) 0 80px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  text-align: center;
  overflow: hidden;
  color: var(--text-primary);
  background: transparent;
}

.home-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 20%, rgba(124, 58, 237, 0.25) 0%, transparent 50%),
    radial-gradient(ellipse at 70% 60%, rgba(236, 72, 153, 0.20) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(6, 182, 212, 0.12) 0%, transparent 45%);
  pointer-events: none;
}

.home-hero::after {
  display: none;
}

.home-hero .container {
  position: relative;
  z-index: 1;
}

.home-hero h1 {
  font-size: clamp(2.5rem, 6.5vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  margin-bottom: var(--spacing-lg);
  line-height: 1.08;
  color: var(--text-primary);
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: fadeInUp 0.8s var(--ease-out-expo);
}

.home-hero p {
  font-size: clamp(1rem, 1.8vw, 1.25rem);
  color: var(--text-secondary);
  max-width: 650px;
  margin: 0 auto var(--spacing-2xl);
  line-height: 1.7;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.12s both;
}

.home-hero .btn-group {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s var(--ease-out-expo) 0.24s both;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0.8rem 1.6rem;
  font-size: 0.938rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: transform 0.3s var(--ease-out-quart), background 0.3s, border-color 0.3s, box-shadow 0.3s;
  white-space: nowrap;
  line-height: 1;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--gradient-brand);
  color: #fff;
  box-shadow: 0 8px 24px rgba(124, 58, 237, 0.32);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(236, 72, 153, 0.38);
  color: #fff;
}

.btn-outline {
  background: var(--surface-glass);
  border: 1px solid var(--hairline-strong);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text-primary);
}

.btn-outline:hover {
  background: var(--surface-glass-hover);
  border-color: var(--text-tertiary);
  transform: translateY(-2px);
  color: var(--text-primary);
}

.btn-outline-dark {
  background: var(--surface-glass);
  border: 1px solid var(--hairline-strong);
  color: var(--text-primary);
}

.btn-outline-dark:hover {
  background: var(--surface-glass-hover);
  border-color: var(--text-tertiary);
  color: var(--text-primary);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.813rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
}

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

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-header h2 {
  font-size: clamp(1.75rem, 4.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.section-header h2 .gradient-text,
.section-header h2 span.gradient {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.section-header p {
  font-size: clamp(0.938rem, 1.4vw, 1.063rem);
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto;
}

/* ============================================
   Feature Cards
   ============================================ */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  position: relative;
  background: var(--surface-glass);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  padding: var(--spacing-2xl);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform 0.5s var(--ease-out-expo), background 0.3s, border-color 0.3s;
}

.feature-card:hover {
  transform: translateY(-6px);
  background: var(--surface-glass-hover);
  border-color: var(--hairline-strong);
  box-shadow: none;
}

.feature-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.16), rgba(124, 58, 237, 0.04));
  border: 1px solid var(--hairline);
  color: var(--accent-violet);
  font-size: 1.25rem;
}

.feature-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.01em;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.906rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   Main Business Grid (首页)
   ============================================ */
.main-business-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.business-item {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-xl);
  background: var(--surface-glass);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform 0.5s var(--ease-out-expo), background 0.3s, border-color 0.3s;
}

.business-item:hover {
  transform: translateY(-6px);
  background: var(--surface-glass-hover);
  border-color: var(--hairline-strong);
  box-shadow: none;
}

.business-item-icon {
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
  margin: 0 auto var(--spacing-lg);
  font-size: 1.5rem;
  border: 1px solid var(--hairline);
}

.business-item h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.business-item span {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   About Page
   ============================================ */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.about-image {
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  border: 1px solid var(--hairline);
  background: var(--surface-glass);
}

.about-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.12), rgba(236, 72, 153, 0.08));
  color: var(--accent-violet);
  font-size: 3rem;
}

.about-text h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  letter-spacing: -0.02em;
}

.about-text p {
  color: var(--text-secondary);
  line-height: 1.9;
  margin-bottom: var(--spacing-md);
  font-size: 0.969rem;
}

/* ============================================
   Timeline
   ============================================ */
.timeline {
  position: relative;
  padding-left: var(--spacing-2xl);
}

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--hairline-strong);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--spacing-2xl);
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: calc(-1 * var(--spacing-2xl) + 3px);
  top: 4px;
  width: 10px;
  height: 10px;
  background: var(--accent-violet);
  border-radius: 50%;
  border: 2px solid var(--bg-base);
  box-shadow: 0 0 0 2px var(--accent-violet), 0 0 12px rgba(124, 58, 237, 0.4);
}

.timeline-stage {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--accent-violet);
  margin-bottom: var(--spacing-xs);
}

.timeline-item p {
  color: var(--text-secondary);
  font-size: 0.938rem;
}

/* ============================================
   Product Cards
   ============================================ */
.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.product-card {
  background: var(--surface-glass);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: transform 0.5s var(--ease-out-expo), background 0.3s, border-color 0.3s;
}

.product-card:hover {
  transform: translateY(-6px);
  background: var(--surface-glass-hover);
  border-color: var(--hairline-strong);
  box-shadow: none;
}

.product-image {
  width: 100%;
  aspect-ratio: 16/10;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  color: var(--text-muted);
  position: relative;
}

.product-body {
  padding: var(--spacing-xl);
}

.product-body h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.product-body p {
  font-size: 0.906rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: var(--spacing-lg);
}

.product-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
}

.product-tag {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.3rem 0.75rem;
  background: rgba(124, 58, 237, 0.15);
  color: var(--accent-violet);
  border-radius: var(--radius-full);
  border: 1px solid rgba(124, 58, 237, 0.2);
}

/* ============================================
   Contact Page
   ============================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--spacing-3xl);
}

.contact-info h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
}

.contact-info > p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.8;
}

.contact-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-2xl);
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.16), rgba(124, 58, 237, 0.04));
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  font-size: 1.125rem;
  flex-shrink: 0;
  color: var(--accent-violet);
}

.contact-item-text h3 {
  font-size: 0.813rem;
  font-weight: 600;
  color: var(--text-tertiary);
  margin-bottom: 2px;
}

.contact-item-text span {
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 500;
}

.contact-form {
  background: var(--surface-glass);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.contact-form h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xl);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-size: 0.813rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.938rem;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--surface-glass);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent-violet);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
  background: var(--surface-glass-strong);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-submit {
  width: 100%;
}

/* Solo contact info style (contact page without form) */
.contact-info-solo {
  max-width: 680px;
  margin: 0 auto;
}

.contact-info-solo h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.02em;
  text-align: center;
}

.contact-info-solo > p {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  line-height: 1.8;
  text-align: center;
}

.contact-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
  margin-top: var(--spacing-xl);
}

/* ============================================
   Stats Grid
   ============================================ */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}

.stat-item h3 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.stat-item p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-top: var(--spacing-xs);
}

/* ============================================
   CTA Section
   ============================================ */
.cta-section {
  position: relative;
  text-align: center;
  padding: var(--section-pad-y) 0;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 40%, rgba(124, 58, 237, 0.22) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 60%, rgba(236, 72, 153, 0.18) 0%, transparent 55%);
  pointer-events: none;
}

.cta-section h2 {
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  position: relative;
  color: var(--text-primary);
}

.cta-section p {
  font-size: 1.063rem;
  color: var(--text-secondary);
  max-width: 560px;
  margin: 0 auto var(--spacing-xl);
  position: relative;
}

.cta-section .btn {
  position: relative;
}

.cta-section .btn-outline {
  border-color: var(--hairline-strong);
}

.cta-section .btn-outline:hover {
  background: var(--surface-glass-hover);
  border-color: var(--text-tertiary);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  position: relative;
  background: transparent;
  color: var(--text-secondary);
  padding: var(--section-pad-y) 0 var(--spacing-xl);
  margin-top: auto;
}

.footer::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 30%, rgba(124, 58, 237, 0.10) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(236, 72, 153, 0.08) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

.footer .container {
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.3fr;
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-2xl);
}

.footer-brand h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--text-tertiary);
}

.footer-links h4 {
  font-size: 0.813rem;
  font-family: var(--font-mono);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-md);
}

.footer-links a {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: var(--spacing-xs) 0;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--text-primary);
}

.footer-links span.footer-address {
  display: block;
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: var(--spacing-xs) 0;
  line-height: 1.6;
}

.footer-bottom {
  border-top: 1px solid var(--hairline);
  padding-top: var(--spacing-xl);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 0.813rem;
  color: var(--text-muted);
}

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

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--spacing-lg);
}

.footer-legal a {
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.footer-legal a:hover {
  color: var(--text-primary);
}

/* === 隐私政策页 === */
.privacy-content h2 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: var(--spacing-xl) 0 var(--spacing-sm);
}

.privacy-content h2:first-of-type {
  margin-top: 0;
}

.privacy-content p {
  font-size: 0.938rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
}

.privacy-content a {
  color: var(--accent-violet);
}

.privacy-content a:hover {
  color: var(--accent-pink);
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-on-scroll {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Toast
   ============================================ */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  padding: 14px 18px 14px 14px;
  border-radius: var(--radius-md);
  background: var(--surface-glass-strong);
  border: 1px solid var(--hairline-strong);
  backdrop-filter: blur(20px) saturate(140%);
  -webkit-backdrop-filter: blur(20px) saturate(140%);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  transform: translateY(120%);
  opacity: 0;
  transition: transform 0.5s var(--ease-out-expo), opacity 0.5s var(--ease-out-quart);
  pointer-events: none;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

.toast.success {
  border-left: 3px solid var(--accent-green);
}

.toast.error {
  border-left: 3px solid var(--accent-pink);
}

/* ============================================
   Admin Panel Styles
   ============================================ */
.admin-container {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--container-pad-x);
}

.admin-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.admin-header h1 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.admin-header p {
  color: var(--text-secondary);
  font-size: 0.938rem;
}

.admin-card {
  background: var(--surface-glass);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  margin-bottom: var(--spacing-xl);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.admin-card h2 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-lg);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.csv-import textarea {
  width: 100%;
  min-height: 80px;
  padding: var(--spacing-md);
  font-family: var(--font-mono);
  font-size: 0.875rem;
  color: var(--text-primary);
  background: var(--surface-glass);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-md);
  resize: vertical;
  outline: none;
  margin-bottom: var(--spacing-md);
  line-height: 1.5;
}

.csv-import textarea:focus {
  border-color: var(--accent-violet);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
}

.csv-help {
  font-size: 0.813rem;
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--surface-glass);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-violet);
}

.csv-help code {
  background: var(--surface-glass-strong);
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.813rem;
  color: var(--accent-cyan);
}

.csv-import .btn {
  width: 100%;
}

.config-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.config-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: var(--spacing-md);
  align-items: start;
}

.config-row label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding-top: 0.75rem;
}

.config-row input,
.config-row textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 0.938rem;
  font-family: var(--font-sans);
  color: var(--text-primary);
  background: var(--surface-glass);
  border: 1px solid var(--hairline-strong);
  border-radius: var(--radius-md);
  outline: none;
  transition: all var(--transition-fast);
}

.config-row input:focus,
.config-row textarea:focus {
  border-color: var(--accent-violet);
  box-shadow: 0 0 0 3px rgba(124, 58, 237, 0.15);
  background: var(--surface-glass-strong);
}

.config-row textarea {
  resize: vertical;
  min-height: 60px;
}

.admin-actions {
  display: flex;
  gap: var(--spacing-md);
  justify-content: flex-end;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 1024px) {
  .features-grid,
  .products-grid,
  .main-business-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }

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

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

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

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  /* Nav */
  .navbar {
    top: 8px;
    border-radius: var(--radius-lg);
  }

  .navbar .container {
    padding: 0 12px 0 16px;
  }

  .navbar-toggle {
    display: flex;
  }

  .navbar-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    padding: calc(var(--nav-height) + var(--spacing-2xl) + 40px) var(--spacing-xl) var(--spacing-xl);
    gap: 4px;
    background: var(--surface-glass-strong);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-left: 1px solid var(--hairline-strong);
    box-shadow: var(--shadow-xl);
    transition: right var(--transition-base);
    z-index: 1000;
    border-radius: 0;
  }

  .navbar-links.open {
    right: 0;
  }

  .navbar-links a {
    padding: 12px 16px;
    font-size: 1rem;
    border-radius: var(--radius-md);
  }

  .navbar-links a::after {
    display: none;
  }

  /* Hero */
  .home-hero {
    min-height: auto;
    padding: calc(80px + 48px) 0 80px;
  }

  .home-hero h1 {
    font-size: 2rem;
  }

  .home-hero p {
    font-size: 1rem;
  }

  .page-hero {
    padding: calc(80px + 40px) 0 60px;
  }

  .page-hero h1 {
    font-size: 1.75rem;
  }

  /* Grids */
  .features-grid,
  .products-grid,
  .main-business-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }

  .section-header h2 {
    font-size: 1.75rem;
  }

  /* About */
  .about-text h2 {
    font-size: 1.5rem;
  }

  /* Contact */
  .contact-form {
    padding: var(--spacing-xl);
  }

  .contact-info h2,
  .contact-info-solo h2 {
    font-size: 1.5rem;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
  }

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

  /* Admin */
  .config-row {
    grid-template-columns: 1fr;
    gap: var(--spacing-xs);
  }

  .config-row label {
    padding-top: 0;
  }

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

  .admin-actions .btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .home-hero h1 {
    font-size: 1.75rem;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
  }

  .btn-group {
    flex-direction: column;
    align-items: center;
  }

  .btn-group .btn {
    width: 100%;
    max-width: 280px;
  }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .animate-on-scroll,
  .animate-on-scroll.visible {
    opacity: 1 !important;
    transform: none !important;
  }
}