/* ===== CSS Variables ===== */
:root {
  /* Primary Colors - Green Palette */
  --color-primary-dark: #1B5E20;
  --color-primary: #2E7D32;
  --color-primary-light: #43A047;
  --color-primary-lighter: #66BB6A;
  --color-primary-lightest: #E8F5E9;
  
  /* Neutral Colors */
  --color-white: #FFFFFF;
  --color-gray-50: #FAFAFA;
  --color-gray-100: #F5F5F5;
  --color-gray-200: #EEEEEE;
  --color-gray-300: #E0E0E0;
  --color-gray-400: #BDBDBD;
  --color-gray-500: #9E9E9E;
  --color-gray-600: #757575;
  --color-gray-700: #616161;
  --color-gray-800: #424242;
  --color-gray-900: #212121;
  
  /* Semantic Colors */
  --color-success: #4CAF50;
  --color-warning: #FF9800;
  --color-error: #EF5350;
  
  /* Typography */
  --font-primary: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3.5rem;
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  
  /* Spacing */
  --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;
  --spacing-5xl: 8rem;
  
  /* Other */
  --border-radius-sm: 6px;
  --border-radius: 12px;
  --border-radius-lg: 16px;
  --border-radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s ease;
}

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

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-normal);
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  margin: 0;
  padding: 0;
  overflow-x: hidden;
}

main {
  display: block;
  margin: 0;
  padding: 0;
}

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

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

ul { list-style: none; }

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}

/* ===== Utility Classes ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-4xl);
}

.section-tag {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: linear-gradient(135deg, var(--color-primary-lightest), rgba(46, 125, 50, 0.1));
  color: var(--color-primary);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: 50px;
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.5px;
}

.section-title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-gray-600);
  max-width: 500px;
  margin: 0 auto;
}

.highlight {
  color: var(--color-primary);
  position: relative;
}

.text-error { color: var(--color-error); font-weight: var(--font-weight-semibold); }

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-xl);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border-radius: var(--border-radius);
  transition: var(--transition);
  min-height: 48px;
  min-width: 44px;
  border: 2px solid transparent;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(46, 125, 50, 0.3);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(46, 125, 50, 0.4);
}

.btn--glass {
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  color: var(--color-white);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn--glass:hover {
  background: rgba(255, 255, 255, 0.25);
}

.btn--white {
  background: var(--color-white);
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.btn--white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn--lg {
  padding: var(--spacing-md) var(--spacing-2xl);
  font-size: var(--font-size-lg);
  min-height: 56px;
}

.btn--sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

/* ===== Header & Navigation ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
  z-index: 1000;
  transition: var(--transition);
}

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

.header--hidden {
  transform: translateY(-100%);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0 var(--spacing-5xl);
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav__logo-text {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--spacing-2xl);
}

.nav__link {
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  color: var(--color-gray-700);
  padding: var(--spacing-sm) 0;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
}

.nav__link:hover {
  color: var(--color-primary);
}

.nav__link:hover::after {
  width: 100%;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
  min-height: 44px;
  min-width: 44px;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  z-index: 1001;
}

.nav__toggle-bar {
  width: 24px;
  height: 2px;
  background-color: var(--color-gray-800);
  transition: var(--transition);
  border-radius: 2px;
}

/* Hamburger animation */
.nav__toggle.active .nav__toggle-bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.active .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}

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

/* ===== Hero Section ===== */
.hero {
  position: relative;
  width: 100%;
  height: 100vh;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0;
  margin: 0;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}

.hero__bg-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero__bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, 
    rgba(27, 94, 32, 0.85) 0%, 
    rgba(46, 125, 50, 0.75) 50%,
    rgba(67, 160, 71, 0.65) 100%);
}

.hero__container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
  padding: var(--spacing-4xl) 0;
}

.hero__badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  margin-bottom: var(--spacing-lg);
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  line-height: 1.1;
  margin-bottom: var(--spacing-md);
  letter-spacing: -1px;
}

.hero__subtitle {
  font-size: var(--font-size-2xl);
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: var(--spacing-md);
  font-weight: var(--font-weight-light);
}

.hero__subtitle .highlight {
  color: #A5D6A7;
  font-weight: var(--font-weight-semibold);
}

.hero__description {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-xl);
  max-width: 480px;
}

.hero__buttons {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.hero__visual {
  display: flex;
  justify-content: center;
}

.hero__card {
  background: rgba(27, 94, 32, 0.85);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
}

.hero__card-header {
  display: flex;
  gap: 6px;
  padding: var(--spacing-md);
  background: rgba(0, 0, 0, 0.25);
}

.hero__card-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
}

.hero__card-dot:first-child { background: #FF5F56; }
.hero__card-dot:nth-child(2) { background: #FFBD2E; }
.hero__card-dot:nth-child(3) { background: #27CA40; }

.hero__card-content {
  padding: var(--spacing-lg);
}

.hero__card-row {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 0.8fr;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-xs);
  color: rgba(255, 255, 255, 0.95);
  font-size: var(--font-size-sm);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

.hero__card-row--header {
  font-weight: var(--font-weight-semibold);
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  background: rgba(0, 0, 0, 0.15);
  margin: 0 calc(-1 * var(--spacing-lg));
  padding: var(--spacing-sm) var(--spacing-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
}

.hero__card-row--error {
  background: rgba(239, 83, 80, 0.35);
  border-radius: var(--border-radius-sm);
  margin: var(--spacing-xs) calc(-1 * var(--spacing-xs));
  padding: var(--spacing-sm) var(--spacing-xs);
}

.status { font-weight: var(--font-weight-bold); text-align: center; }
.status--ok { color: #A5D6A7; }
.status--error { color: #FFCDD2; }

.hero__scroll {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  color: rgba(255, 255, 255, 0.6);
  font-size: var(--font-size-sm);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(10px); }
}

/* ===== Stats Section ===== */
.stats {
  padding: var(--spacing-4xl) 0;
  background: var(--color-gray-50);
  position: relative;
  z-index: 10;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-lg);
}

.stat-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-xl);
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.stat-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, var(--color-primary-lightest), rgba(46, 125, 50, 0.1));
  border-radius: var(--border-radius);
  color: var(--color-primary);
  flex-shrink: 0;
}

.stat-card__value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
  line-height: 1;
}

.stat-card__unit {
  font-size: var(--font-size-xl);
  color: var(--color-primary);
}

.stat-card__label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  margin-top: var(--spacing-xs);
}

/* ===== Features Section ===== */
.features {
  padding: var(--spacing-5xl) 0;
  background: var(--color-white);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-xl);
}

.feature-card {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  border: 1px solid var(--color-gray-100);
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.feature-card__image {
  position: relative;
  height: 160px;
  overflow: hidden;
}

.feature-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.feature-card:hover .feature-card__image img {
  transform: scale(1.1);
}

.feature-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.3) 100%);
}

.feature-card__content {
  padding: var(--spacing-xl);
}

.feature-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  border-radius: var(--border-radius);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
  margin-top: -40px;
  position: relative;
  box-shadow: 0 4px 15px rgba(46, 125, 50, 0.3);
}

.feature-card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-sm);
}

.feature-card__desc {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  line-height: 1.6;
}

/* ===== Demo Section - Professional Audit Dashboard ===== */
.demo {
  padding: var(--spacing-5xl) 0;
  background: linear-gradient(180deg, var(--color-gray-100) 0%, var(--color-gray-50) 100%);
}

.audit-dashboard {
  background: var(--color-white);
  border-radius: var(--border-radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  border: 1px solid var(--color-gray-200);
}

/* Audit Header */
.audit-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg) var(--spacing-xl);
  background: linear-gradient(135deg, var(--color-gray-900) 0%, var(--color-gray-800) 100%);
  color: var(--color-white);
}

.audit-header__left {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.audit-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: var(--font-weight-semibold);
}

.audit-status {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(76, 175, 80, 0.2);
  border-radius: 50px;
  font-size: var(--font-size-sm);
}

.audit-status__dot {
  width: 8px;
  height: 8px;
  background: var(--color-success);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.audit-header__right {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
  font-size: var(--font-size-sm);
  color: var(--color-gray-400);
}

.audit-time {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* Audit Overview Stats */
.audit-overview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--color-gray-200);
  border-bottom: 1px solid var(--color-gray-200);
}

.audit-stat {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg) var(--spacing-xl);
  background: var(--color-white);
}

.audit-stat__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--border-radius);
  color: var(--color-white);
}

.audit-stat--total .audit-stat__icon { background: linear-gradient(135deg, #5C6BC0, #3F51B5); }
.audit-stat--match .audit-stat__icon { background: linear-gradient(135deg, #66BB6A, #43A047); }
.audit-stat--diff .audit-stat__icon { background: linear-gradient(135deg, #FFA726, #FB8C00); }
.audit-stat--amount .audit-stat__icon { background: linear-gradient(135deg, #EF5350, #E53935); }

.audit-stat__value {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
}

.audit-stat__label {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

/* Audit Compare Tables */
.audit-compare {
  padding: var(--spacing-xl);
  background: var(--color-gray-50);
}

.audit-table-container {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--spacing-lg);
  align-items: start;
}

.audit-table-panel {
  background: var(--color-white);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-gray-200);
}

.audit-table-header {
  padding: var(--spacing-md) var(--spacing-lg);
  color: var(--color-white);
}

.audit-table-header--purchase {
  background: linear-gradient(135deg, #5C6BC0, #3F51B5);
}

.audit-table-header--inventory {
  background: linear-gradient(135deg, #26A69A, #00897B);
}

.audit-table-header__title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-weight: var(--font-weight-semibold);
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xs);
}

.audit-table-header__meta {
  display: flex;
  gap: var(--spacing-md);
  font-size: var(--font-size-xs);
  opacity: 0.8;
}

.audit-table-body {
  overflow-x: auto;
}

.audit-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
}

.audit-table th {
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-gray-100);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-600);
  text-align: left;
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid var(--color-gray-200);
}

.audit-table td {
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--color-gray-100);
  color: var(--color-gray-800);
}

.audit-table .col-index {
  width: 40px;
  color: var(--color-gray-400);
  font-weight: var(--font-weight-medium);
}

.audit-table .col-name {
  min-width: 120px;
}

.product-name {
  display: block;
  font-weight: var(--font-weight-medium);
  color: var(--color-gray-900);
}

.product-spec {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
}

.audit-table .col-qty,
.audit-table .col-price,
.audit-table .col-amount {
  text-align: right;
  font-family: 'SF Mono', 'Monaco', monospace;
}

.audit-table .col-status {
  text-align: center;
  width: 80px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  border-radius: 50px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.status-badge--match {
  background: rgba(76, 175, 80, 0.1);
  color: var(--color-success);
}

.status-badge--diff {
  background: rgba(255, 152, 0, 0.1);
  color: var(--color-warning);
}

.row-diff {
  background: rgba(255, 152, 0, 0.05);
}

.highlight-cell {
  background: rgba(255, 152, 0, 0.15);
  font-weight: var(--font-weight-semibold);
  color: var(--color-warning);
  border-radius: 4px;
}

.audit-table tfoot td {
  padding: var(--spacing-md);
  background: var(--color-gray-50);
  border-top: 2px solid var(--color-gray-200);
}

.total-label {
  text-align: right;
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-700);
}

.total-amount {
  text-align: right;
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
  font-size: var(--font-size-base);
}

/* Connector */
.audit-compare-connector {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--spacing-xl) 0;
}

.connector-line {
  width: 2px;
  height: 60px;
  background: linear-gradient(to bottom, var(--color-gray-300), var(--color-primary), var(--color-gray-300));
}

.connector-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background: var(--color-white);
  border: 2px solid var(--color-primary);
  border-radius: 50%;
  color: var(--color-primary);
  margin: var(--spacing-sm) 0;
}

/* ===== Categories Section ===== */
.categories {
  padding: var(--spacing-5xl) 0;
  background: var(--color-white);
}

.categories__grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-lg);
}

.category-card {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  aspect-ratio: 1;
  cursor: pointer;
}

.category-card__image {
  position: absolute;
  inset: 0;
}

.category-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.category-card:hover .category-card__image img {
  transform: scale(1.1);
}

.category-card__content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--spacing-lg);
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.2) 50%, transparent 100%);
  transition: var(--transition);
}

.category-card:hover .category-card__content {
  background: linear-gradient(to top, rgba(46, 125, 50, 0.9) 0%, rgba(46, 125, 50, 0.5) 50%, transparent 100%);
}

.category-card__name {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-xs);
}

.category-card__desc {
  font-size: var(--font-size-sm);
  color: rgba(255, 255, 255, 0.8);
}

/* ===== CTA Section ===== */
.cta {
  padding: var(--spacing-5xl) 0;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
  position: relative;
  overflow: hidden;
}

.cta::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  border-radius: 50%;
}

.cta__content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.cta__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.cta__desc {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Footer ===== */
.footer {
  padding: var(--spacing-3xl) 0 var(--spacing-lg);
  background: var(--color-gray-900);
  color: var(--color-white);
}

.footer .container {
  max-width: 900px;
}

.footer__top {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--spacing-2xl);
  padding-bottom: var(--spacing-2xl);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}

.footer__logo svg {
  width: 32px;
  height: 32px;
}

.footer__desc {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
  line-height: 1.6;
}

.footer__links {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
}

.footer__column h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-md);
  color: var(--color-white);
}

.footer__column ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer__column a {
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
}

.footer__column a:hover {
  color: var(--color-white);
}

.footer__contact li {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  color: var(--color-gray-400);
  font-size: var(--font-size-sm);
}

.footer__contact svg {
  flex-shrink: 0;
  opacity: 0.6;
  width: 14px;
  height: 14px;
}

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-xl);
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.footer__legal {
  display: flex;
  gap: var(--spacing-lg);
}

.footer__legal a {
  color: var(--color-gray-500);
}

.footer__legal a:hover {
  color: var(--color-white);
}

/* ===== Responsive Design ===== */
@media (max-width: 1024px) {
  .hero__container {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero__description {
    margin: 0 auto var(--spacing-xl);
  }
  
  .hero__buttons {
    justify-content: center;
  }
  
  .hero__visual {
    display: none;
  }
  
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .categories__grid {
    grid-template-columns: repeat(3, 1fr);
  }
  
  .demo__steps {
    flex-wrap: wrap;
  }
  
  .demo__step-arrow {
    display: none;
  }
  
  .footer__top {
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
  }
}

@media (max-width: 768px) {
  /* ===== Mobile Navigation - 优化导航体验 ===== */
  .nav {
    padding: 0 var(--spacing-md);
    height: 56px;
  }
  
  .nav__logo-text {
    font-size: var(--font-size-sm);
  }
  
  .nav__logo-icon svg {
    width: 24px;
    height: 24px;
  }
  
  .nav__list {
    position: fixed;
    top: 56px;
    left: 0;
    width: 100%;
    height: calc(100vh - 56px);
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-50) 100%);
    flex-direction: column;
    padding: var(--spacing-xl) var(--spacing-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    gap: var(--spacing-sm);
    z-index: 999;
    overflow-y: auto;
  }
  
  .nav__list.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav__item {
    width: 100%;
    border-bottom: none;
    transform: translateX(-20px);
    opacity: 0;
    transition: all 0.3s ease;
  }
  
  .nav__list.active .nav__item {
    transform: translateX(0);
    opacity: 1;
  }
  
  .nav__list.active .nav__item:nth-child(1) { transition-delay: 0.1s; }
  .nav__list.active .nav__item:nth-child(2) { transition-delay: 0.15s; }
  .nav__list.active .nav__item:nth-child(3) { transition-delay: 0.2s; }
  .nav__list.active .nav__item:nth-child(4) { transition-delay: 0.25s; }
  
  .nav__link {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg) var(--spacing-md);
    text-align: center;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
    background: var(--color-white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-sm);
    transition: all 0.3s ease;
  }
  
  .nav__link:hover,
  .nav__link:active {
    background: var(--color-primary-lightest);
    color: var(--color-primary);
    transform: scale(1.02);
  }
  
  .nav__toggle {
    display: flex;
    width: 44px;
    height: 44px;
  }
  
  /* ===== Mobile Hero - 全新设计 ===== */
  .hero {
    min-height: 100vh;
    min-height: 100dvh; /* 动态视口高度，解决移动端地址栏问题 */
    padding-top: 56px;
    display: flex;
    align-items: center;
  }
  
  .hero__container {
    padding: var(--spacing-lg) 0;
    text-align: center;
  }
  
  .hero__badge {
    font-size: var(--font-size-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    margin-bottom: var(--spacing-md);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
  }
  
  .hero__title {
    font-size: 2.5rem;
    line-height: 1.1;
    margin-bottom: var(--spacing-sm);
    letter-spacing: -0.5px;
  }
  
  .hero__subtitle {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    line-height: 1.4;
  }
  
  .hero__description {
    font-size: var(--font-size-sm);
    line-height: 1.6;
    margin: 0 auto var(--spacing-xl);
    max-width: 320px;
    opacity: 0.9;
  }
  
  .hero__buttons {
    flex-direction: column;
    gap: var(--spacing-md);
    padding: 0 var(--spacing-md);
  }
  
  .hero__buttons .btn {
    width: 100%;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    border-radius: var(--border-radius-lg);
  }
  
  .hero__buttons .btn--primary {
    box-shadow: 0 8px 25px rgba(46, 125, 50, 0.35);
  }
  
  .hero__scroll {
    display: none;
  }
  
  /* Hero背景优化 */
  .hero__bg-overlay {
    background: linear-gradient(180deg, 
      rgba(27, 94, 32, 0.92) 0%, 
      rgba(46, 125, 50, 0.85) 50%,
      rgba(67, 160, 71, 0.78) 100%);
  }
  
  /* ===== Mobile Section Headers ===== */
  .section-header {
    margin-bottom: var(--spacing-xl);
    padding: 0 var(--spacing-sm);
  }
  
  .section-tag {
    font-size: var(--font-size-xs);
    padding: 6px 14px;
    margin-bottom: var(--spacing-sm);
  }
  
  .section-title {
    font-size: var(--font-size-2xl);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
  }
  
  .section-subtitle {
    font-size: var(--font-size-sm);
    line-height: 1.5;
  }
  
  /* ===== Mobile Stats - 横向滚动卡片 ===== */
  .stats {
    padding: var(--spacing-xl) 0;
    overflow: hidden;
  }
  
  .stats__grid {
    display: flex;
    gap: var(--spacing-md);
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    padding: var(--spacing-sm) var(--spacing-md);
    margin: 0 calc(-1 * var(--spacing-md));
  }
  
  .stats__grid::-webkit-scrollbar {
    display: none;
  }
  
  .stat-card {
    flex: 0 0 auto;
    width: 140px;
    flex-direction: column;
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    scroll-snap-align: start;
    border-radius: var(--border-radius-lg);
    gap: var(--spacing-sm);
  }
  
  .stat-card__icon {
    width: 48px;
    height: 48px;
    margin: 0 auto;
  }
  
  .stat-card__icon svg {
    width: 24px;
    height: 24px;
  }
  
  .stat-card__value {
    font-size: var(--font-size-2xl);
  }
  
  .stat-card__unit {
    font-size: var(--font-size-base);
  }
  
  .stat-card__label {
    font-size: var(--font-size-xs);
  }
  
  /* ===== Mobile Features - 卡片式设计 ===== */
  .features {
    padding: var(--spacing-2xl) 0;
  }
  
  .features__grid {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    padding: 0 var(--spacing-sm);
  }
  
  .feature-card {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
  }
  
  .feature-card__image {
    width: 120px;
    min-width: 120px;
    height: auto;
    min-height: 140px;
  }
  
  .feature-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
  }
  
  .feature-card__content {
    flex: 1;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    justify-content: center;
  }
  
  .feature-card__icon {
    width: 40px;
    height: 40px;
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    position: static;
  }
  
  .feature-card__icon svg {
    width: 20px;
    height: 20px;
  }
  
  .feature-card__title {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
  }
  
  .feature-card__desc {
    font-size: var(--font-size-xs);
    line-height: 1.5;
    color: var(--color-gray-600);
  }
  
  /* ===== Mobile Categories - 网格优化 ===== */
  .categories {
    padding: var(--spacing-2xl) 0;
  }
  
  .categories__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-sm);
  }
  
  .category-card {
    aspect-ratio: 1;
    border-radius: var(--border-radius);
  }
  
  .category-card__content {
    padding: var(--spacing-md);
  }
  
  .category-card__name {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
  }
  
  .category-card__desc {
    font-size: 10px;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }
  
  /* ===== Mobile Demo/Audit Dashboard - 简化展示 ===== */
  .demo {
    padding: var(--spacing-2xl) 0;
  }
  
  .audit-dashboard {
    border-radius: var(--border-radius);
    margin: 0 var(--spacing-sm);
  }
  
  .audit-header {
    padding: var(--spacing-md);
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .audit-header__left {
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
  }
  
  .audit-logo {
    font-size: var(--font-size-sm);
  }
  
  .audit-logo svg {
    width: 20px;
    height: 20px;
  }
  
  .audit-status {
    font-size: var(--font-size-xs);
    padding: 4px 10px;
  }
  
  .audit-header__right {
    display: none; /* 移动端隐藏时间和编号 */
  }
  
  .audit-overview {
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
  }
  
  .audit-stat {
    padding: var(--spacing-md);
    flex-direction: column;
    text-align: center;
    gap: var(--spacing-xs);
  }
  
  .audit-stat__icon {
    width: 36px;
    height: 36px;
  }
  
  .audit-stat__icon svg {
    width: 18px;
    height: 18px;
  }
  
  .audit-stat__value {
    font-size: var(--font-size-lg);
  }
  
  .audit-stat__label {
    font-size: 10px;
  }
  
  .audit-compare {
    padding: var(--spacing-md);
  }
  
  .audit-table-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .audit-compare-connector {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: var(--spacing-md) 0;
    margin: 0 auto;
  }
  
  .connector-line {
    width: 50px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-gray-300), var(--color-primary), var(--color-gray-300));
  }
  
  .connector-icon {
    width: 40px;
    height: 40px;
    margin: 0 var(--spacing-sm);
    flex-shrink: 0;
  }
  
  .connector-icon svg {
    width: 20px;
    height: 20px;
  }
  
  .audit-table-panel {
    border-radius: var(--border-radius);
  }
  
  .audit-table-header {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .audit-table-header__title {
    font-size: var(--font-size-sm);
    gap: var(--spacing-xs);
  }
  
  .audit-table-header__title svg {
    width: 16px;
    height: 16px;
  }
  
  .audit-table-header__meta {
    flex-direction: column;
    gap: 2px;
    font-size: 10px;
  }
  
  .audit-table-body {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  
  .audit-table {
    min-width: 450px;
    font-size: var(--font-size-xs);
  }
  
  .audit-table th,
  .audit-table td {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .audit-table th {
    font-size: 10px;
  }
  
  .product-name {
    font-size: var(--font-size-xs);
  }
  
  .product-spec {
    font-size: 10px;
  }
  
  .status-badge {
    font-size: 10px;
    padding: 2px 6px;
  }
  
  /* 差异报告移动端 */
  .audit-report {
    padding: var(--spacing-md);
  }
  
  .audit-report__header {
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: stretch;
  }
  
  .audit-report__title {
    font-size: var(--font-size-sm);
    justify-content: center;
  }
  
  .audit-report__title svg {
    width: 18px;
    height: 18px;
  }
  
  .audit-report__actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-sm);
  }
  
  .audit-btn {
    padding: var(--spacing-sm);
    font-size: var(--font-size-xs);
    justify-content: center;
    min-height: 36px;
  }
  
  .audit-btn svg {
    width: 14px;
    height: 14px;
  }
  
  .diff-card__header {
    padding: var(--spacing-sm) var(--spacing-md);
  }
  
  .diff-card__type {
    font-size: var(--font-size-sm);
  }
  
  .diff-card__severity {
    font-size: 10px;
    padding: 3px 8px;
  }
  
  .diff-card__body {
    padding: var(--spacing-md);
  }
  
  .diff-card__product-name {
    font-size: var(--font-size-base);
  }
  
  .diff-card__product-id {
    font-size: var(--font-size-xs);
  }
  
  .diff-card__details {
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
  }
  
  .diff-detail {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: var(--spacing-xs) 0;
  }
  
  .diff-detail--arrow {
    display: none;
  }
  
  .diff-detail--result {
    padding-left: 0;
    padding-top: var(--spacing-sm);
    border-left: none;
    border-top: 1px solid rgba(255, 152, 0, 0.3);
  }
  
  .diff-detail__label {
    margin-bottom: 0;
    font-size: var(--font-size-xs);
  }
  
  .diff-detail__value {
    font-size: var(--font-size-base);
  }
  
  /* ===== Mobile CTA - 简洁有力 ===== */
  .cta {
    padding: var(--spacing-2xl) 0;
  }
  
  .cta__content {
    padding: 0 var(--spacing-md);
  }
  
  .cta__title {
    font-size: var(--font-size-xl);
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
  }
  
  .cta__desc {
    font-size: var(--font-size-sm);
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
  }
  
  .cta .btn {
    width: 100%;
    max-width: 280px;
  }
  
  /* ===== Mobile Footer - 紧凑布局 ===== */
  .footer {
    padding: var(--spacing-xl) 0 var(--spacing-md);
  }
  
  .footer .container {
    padding: 0 var(--spacing-md);
  }
  
  .footer__top {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
  }
  
  .footer__brand {
    text-align: center;
  }
  
  .footer__logo {
    justify-content: center;
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
  }
  
  .footer__logo svg {
    width: 28px;
    height: 28px;
  }
  
  .footer__desc {
    font-size: var(--font-size-xs);
    line-height: 1.5;
    max-width: 280px;
    margin: 0 auto;
  }
  
  .footer__links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .footer__column h4 {
    font-size: var(--font-size-xs);
    margin-bottom: var(--spacing-sm);
  }
  
  .footer__column a {
    font-size: 11px;
  }
  
  .footer__column ul {
    gap: var(--spacing-xs);
    align-items: center;
  }
  
  .footer__contact li {
    font-size: 11px;
    justify-content: center;
    flex-wrap: wrap;
  }
  
  .footer__contact svg {
    width: 12px;
    height: 12px;
  }
  
  .footer__bottom {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
    padding-top: var(--spacing-md);
    font-size: 10px;
  }
  
  .footer__legal {
    gap: var(--spacing-md);
    font-size: 10px;
  }
}

@media (max-width: 480px) {
  /* ===== 超小屏幕 - 针对小手机优化 ===== */
  .container {
    padding: 0 var(--spacing-sm);
  }
  
  .nav {
    padding: 0 var(--spacing-sm);
    height: 52px;
  }
  
  .nav__list {
    top: 52px;
    height: calc(100vh - 52px);
    padding: var(--spacing-lg) var(--spacing-md);
  }
  
  .nav__link {
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
  }
  
  /* Hero - 更紧凑 */
  .hero__title {
    font-size: 2rem;
  }
  
  .hero__subtitle {
    font-size: var(--font-size-base);
  }
  
  .hero__description {
    font-size: var(--font-size-xs);
    max-width: 280px;
  }
  
  .hero__buttons {
    padding: 0;
  }
  
  .hero__buttons .btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
  }
  
  /* Stats - 更小的卡片 */
  .stat-card {
    width: 120px;
    padding: var(--spacing-md) var(--spacing-sm);
  }
  
  .stat-card__icon {
    width: 40px;
    height: 40px;
  }
  
  .stat-card__value {
    font-size: var(--font-size-xl);
  }
  
  /* Features - 更紧凑的横向布局 */
  .feature-card__image {
    width: 100px;
    min-width: 100px;
    min-height: 120px;
  }
  
  .feature-card__content {
    padding: var(--spacing-sm);
  }
  
  .feature-card__icon {
    width: 32px;
    height: 32px;
    margin-bottom: var(--spacing-xs);
  }
  
  .feature-card__icon svg {
    width: 16px;
    height: 16px;
  }
  
  .feature-card__title {
    font-size: var(--font-size-sm);
  }
  
  .feature-card__desc {
    font-size: 11px;
    line-height: 1.4;
  }
  
  /* Categories - 保持2列但更小 */
  .categories__grid {
    gap: var(--spacing-xs);
  }
  
  .category-card__content {
    padding: var(--spacing-sm);
  }
  
  .category-card__name {
    font-size: var(--font-size-xs);
  }
  
  .category-card__desc {
    display: none; /* 超小屏隐藏描述 */
  }
  
  /* Audit Dashboard - 极简模式 */
  .audit-dashboard {
    margin: 0;
    border-radius: var(--border-radius-sm);
  }
  
  .audit-header {
    padding: var(--spacing-sm);
  }
  
  .audit-logo {
    font-size: var(--font-size-xs);
  }
  
  .audit-logo svg {
    width: 16px;
    height: 16px;
  }
  
  .audit-status {
    font-size: 10px;
    padding: 3px 8px;
  }
  
  .audit-overview {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .audit-stat {
    padding: var(--spacing-sm);
  }
  
  .audit-stat__icon {
    width: 28px;
    height: 28px;
  }
  
  .audit-stat__icon svg {
    width: 14px;
    height: 14px;
  }
  
  .audit-stat__value {
    font-size: var(--font-size-base);
  }
  
  .audit-stat__label {
    font-size: 9px;
  }
  
  .audit-compare {
    padding: var(--spacing-sm);
  }
  
  /* 480px connector居中 */
  .audit-compare-connector {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: var(--spacing-sm) 0;
  }
  
  .connector-line {
    width: 35px;
    height: 2px;
  }
  
  .connector-icon {
    width: 32px;
    height: 32px;
    margin: 0 var(--spacing-xs);
  }
  
  .connector-icon svg {
    width: 16px;
    height: 16px;
  }
  
  .audit-table {
    min-width: 380px;
    font-size: 11px;
  }
  
  .audit-table th,
  .audit-table td {
    padding: 4px 6px;
  }
  
  .audit-table th {
    font-size: 9px;
  }
  
  .product-name {
    font-size: 11px;
  }
  
  .product-spec {
    font-size: 9px;
  }
  
  .status-badge {
    font-size: 9px;
    padding: 1px 4px;
  }
  
  .audit-report {
    padding: var(--spacing-sm);
  }
  
  .audit-report__title {
    font-size: var(--font-size-xs);
  }
  
  .audit-report__actions {
    grid-template-columns: 1fr;
  }
  
  .audit-btn {
    font-size: 11px;
    min-height: 32px;
  }
  
  .diff-card__header {
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  .diff-card__type {
    font-size: var(--font-size-xs);
  }
  
  .diff-card__body {
    padding: var(--spacing-sm);
  }
  
  .diff-card__product-name {
    font-size: var(--font-size-sm);
  }
  
  .diff-card__product-id {
    font-size: 10px;
  }
  
  .diff-detail__label {
    font-size: 10px;
  }
  
  .diff-detail__value {
    font-size: var(--font-size-sm);
  }
  
  /* CTA */
  .cta {
    padding: var(--spacing-xl) 0;
  }
  
  .cta__title {
    font-size: var(--font-size-lg);
  }
  
  .cta__desc {
    font-size: var(--font-size-xs);
  }
  
  /* Footer - 极简 */
  .footer {
    padding: var(--spacing-lg) 0 var(--spacing-md);
  }
  
  .footer__top {
    gap: var(--spacing-md);
    padding-bottom: var(--spacing-md);
  }
  
  .footer__logo {
    font-size: var(--font-size-sm);
  }
  
  .footer__logo svg {
    width: 24px;
    height: 24px;
  }
  
  .footer__desc {
    font-size: 10px;
  }
  
  .footer__links {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
  }
  
  .footer__column h4 {
    font-size: 10px;
    margin-bottom: var(--spacing-xs);
  }
  
  .footer__column a {
    font-size: 10px;
  }
  
  .footer__contact li {
    font-size: 10px;
  }
  
  .footer__contact svg {
    width: 10px;
    height: 10px;
  }
  
  .footer__bottom {
    font-size: 9px;
    padding-top: var(--spacing-sm);
  }
  
  .footer__legal {
    gap: var(--spacing-sm);
    font-size: 9px;
  }
}

/* ===== Focus States ===== */
a:focus, button:focus, .btn:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

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

.hero__content {
  animation: fadeInUp 0.8s ease-out;
}

.hero__visual {
  animation: fadeInUp 0.8s ease-out 0.2s both;
}


/* Audit Report */
.audit-report {
  padding: var(--spacing-xl);
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-200);
}

.audit-report__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-lg);
}

.audit-report__title {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-warning);
}

.audit-report__actions {
  display: flex;
  gap: var(--spacing-sm);
}

.audit-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  min-height: 40px;
}

.audit-btn--outline {
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  color: var(--color-gray-700);
}

.audit-btn--outline:hover {
  background: var(--color-gray-50);
  border-color: var(--color-gray-400);
}

.audit-btn--primary {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  border: none;
  color: var(--color-white);
  box-shadow: 0 2px 8px rgba(46, 125, 50, 0.3);
}

.audit-btn--primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(46, 125, 50, 0.4);
}

/* Diff Card */
.diff-card {
  background: linear-gradient(135deg, #FFF8E1, #FFECB3);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 152, 0, 0.3);
}

.diff-card__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  background: rgba(255, 152, 0, 0.1);
  border-bottom: 1px solid rgba(255, 152, 0, 0.2);
}

.diff-card__type {
  font-weight: var(--font-weight-semibold);
  color: var(--color-warning);
}

.diff-card__severity {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: 50px;
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.diff-card__severity--warning {
  background: rgba(255, 152, 0, 0.2);
  color: #E65100;
}

.diff-card__body {
  padding: var(--spacing-lg);
}

.diff-card__product {
  margin-bottom: var(--spacing-md);
}

.diff-card__product-name {
  display: block;
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-gray-900);
}

.diff-card__product-id {
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
}

.diff-card__details {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.7);
  border-radius: var(--border-radius);
}

.diff-detail {
  text-align: center;
}

.diff-detail--arrow {
  color: var(--color-gray-400);
}

.diff-detail--result {
  padding-left: var(--spacing-lg);
  border-left: 1px solid rgba(255, 152, 0, 0.3);
}

.diff-detail__label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--color-gray-500);
  margin-bottom: var(--spacing-xs);
}

.diff-detail__value {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
}

.diff-detail__value--negative {
  color: var(--color-error);
}

.diff-card__footer {
  padding: var(--spacing-md) var(--spacing-lg);
  background: rgba(255, 255, 255, 0.5);
  border-top: 1px solid rgba(255, 152, 0, 0.2);
}

.diff-card__suggestion {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
}

.diff-card__suggestion svg {
  flex-shrink: 0;
  margin-top: 2px;
  color: var(--color-primary);
}

/* Summary */
.audit-report__summary {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--color-gray-200);
}

.summary-item {
  text-align: center;
  padding: var(--spacing-md);
  background: var(--color-gray-50);
  border-radius: var(--border-radius);
}

.summary-item--highlight {
  background: rgba(239, 83, 80, 0.1);
}

.summary-item__label {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-gray-500);
  margin-bottom: var(--spacing-xs);
}

.summary-item__value {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-gray-900);
}

.summary-item__value--negative {
  color: var(--color-error);
}

.summary-item__value--success {
  color: var(--color-success);
}

/* Responsive for Audit Dashboard */
@media (max-width: 1024px) {
  .audit-header {
    flex-direction: column;
    gap: var(--spacing-md);
    text-align: center;
  }
  
  .audit-header__left,
  .audit-header__right {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .audit-overview {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .audit-table-container {
    grid-template-columns: 1fr;
  }
  
  .audit-compare-connector {
    flex-direction: row;
    padding: var(--spacing-md) 0;
  }
  
  .connector-line {
    width: 60px;
    height: 2px;
  }
  
  .audit-report__summary {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .diff-card__details {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 768px) {
  .audit-overview {
    grid-template-columns: 1fr;
  }
  
  .audit-report__header {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .audit-report__actions {
    width: 100%;
  }
  
  .audit-btn {
    flex: 1;
    justify-content: center;
  }
  
  .audit-report__summary {
    grid-template-columns: 1fr;
  }
  
  .diff-card__details {
    flex-direction: column;
  }
  
  .diff-detail--result {
    padding-left: 0;
    padding-top: var(--spacing-md);
    border-left: none;
    border-top: 1px solid rgba(255, 152, 0, 0.3);
  }
}

/* ===== Scroll Animations ===== */
.scroll-animate {
  opacity: 0;
  transform: translateY(60px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1), 
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* Fade from left */
.scroll-animate--left {
  opacity: 0;
  transform: translateX(-60px);
}

.scroll-animate--left.animate-in {
  opacity: 1;
  transform: translateX(0);
}

/* Fade from right */
.scroll-animate--right {
  opacity: 0;
  transform: translateX(60px);
}

.scroll-animate--right.animate-in {
  opacity: 1;
  transform: translateX(0);
}

/* Scale up */
.scroll-animate--scale {
  opacity: 0;
  transform: scale(0.9);
}

.scroll-animate--scale.animate-in {
  opacity: 1;
  transform: scale(1);
}

/* Stagger children animation */
.stagger-children > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-children.animate-in > *:nth-child(1) { transition-delay: 0.05s; }
.stagger-children.animate-in > *:nth-child(2) { transition-delay: 0.1s; }
.stagger-children.animate-in > *:nth-child(3) { transition-delay: 0.15s; }
.stagger-children.animate-in > *:nth-child(4) { transition-delay: 0.2s; }
.stagger-children.animate-in > *:nth-child(5) { transition-delay: 0.25s; }

.stagger-children.animate-in > * {
  opacity: 1;
  transform: translateY(0);
}

/* Parallax effect for hero */
.hero__bg-image {
  transition: transform 0.1s linear;
}

/* Smooth section transitions */
section {
  position: relative;
}

/* Enhanced card hover effects */
.feature-card,
.stat-card,
.category-card {
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.feature-card:hover {
  transform: translateY(-12px) scale(1.02);
}

.stat-card:hover {
  transform: translateY(-8px) scale(1.02);
}

.category-card:hover {
  transform: scale(1.05);
}


/* ===== Enhanced Visual Effects ===== */

/* Gradient text effect for titles */
.gradient-text {
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary-dark));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Glow effect on hover */
.glow-hover:hover {
  box-shadow: 0 0 30px rgba(46, 125, 50, 0.4);
}

/* Floating animation */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

.float-animation {
  animation: float 3s ease-in-out infinite;
}

/* Pulse animation for status indicators */
@keyframes pulse-glow {
  0%, 100% { 
    box-shadow: 0 0 5px rgba(76, 175, 80, 0.5);
  }
  50% { 
    box-shadow: 0 0 20px rgba(76, 175, 80, 0.8);
  }
}

/* Shimmer effect */
@keyframes shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

.shimmer {
  background: linear-gradient(90deg, 
    transparent 0%, 
    rgba(255,255,255,0.4) 50%, 
    transparent 100%);
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

/* Enhanced button effects */
.btn--primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}

.btn--primary {
  position: relative;
  overflow: hidden;
}

.btn--primary:hover::before {
  left: 100%;
}

/* Card lift effect */
.card-lift {
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1),
              box-shadow 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.card-lift:hover {
  transform: translateY(-15px);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
}

/* Smooth image zoom */
.img-zoom {
  overflow: hidden;
}

.img-zoom img {
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.img-zoom:hover img {
  transform: scale(1.15);
}

/* Text reveal animation */
@keyframes textReveal {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Counter animation placeholder */
.counter-animate {
  transition: all 0.5s ease-out;
}

/* Ripple effect */
.ripple {
  position: relative;
  overflow: hidden;
}

.ripple::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.ripple:active::after {
  width: 300px;
  height: 300px;
}

/* Smooth section dividers */
.section-divider {
  position: relative;
}

.section-divider::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
}

/* Active nav link style */
.nav__link.active {
  color: var(--color-primary);
}

.nav__link.active::after {
  width: 100%;
}

/* Smooth scroll indicator */
.scroll-indicator {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary-light), var(--color-primary));
  z-index: 9999;
  transition: width 0.1s linear;
}

/* Loading skeleton */
.skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

/* Tooltip styles */
[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-5px);
  padding: 8px 12px;
  background: var(--color-gray-900);
  color: white;
  font-size: var(--font-size-sm);
  border-radius: var(--border-radius-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
}

[data-tooltip]:hover::after {
  opacity: 1;
  visibility: visible;
}

/* Backdrop blur for overlays */
.backdrop-blur {
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* Smooth number transitions */
.number-transition {
  transition: all 0.3s ease-out;
}

/* Hero content enhanced animation */
.hero__content {
  animation: fadeInUp 1s ease-out;
}

.hero__badge {
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero__title {
  animation: fadeInUp 0.8s ease-out 0.3s both;
}

.hero__subtitle {
  animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero__description {
  animation: fadeInUp 0.8s ease-out 0.5s both;
}

.hero__buttons {
  animation: fadeInUp 0.8s ease-out 0.6s both;
}

.hero__visual {
  animation: fadeInUp 0.8s ease-out 0.7s both;
}

/* Improved scroll bounce */
.hero__scroll {
  animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-15px);
  }
  60% {
    transform: translateX(-50%) translateY(-7px);
  }
}


/* ===== Mobile Touch Optimizations ===== */
@media (max-width: 768px) {
  /* 禁用移动端的hover效果，改用active状态 */
  .feature-card:hover,
  .stat-card:hover,
  .category-card:hover {
    transform: none;
  }
  
  .feature-card:active,
  .stat-card:active,
  .category-card:active {
    transform: scale(0.98);
    opacity: 0.9;
  }
  
  /* 触摸友好的按钮 */
  .btn {
    -webkit-tap-highlight-color: transparent;
    touch-action: manipulation;
  }
  
  .btn:active {
    transform: scale(0.96);
  }
  
  /* 导航链接触摸反馈 */
  .nav__link:active {
    background: var(--color-primary-lightest);
    transform: scale(0.98);
  }
  
  /* 禁用移动端的视差效果 */
  .hero__bg-image {
    transform: none !important;
  }
  
  /* 优化滚动性能 */
  .stats__grid,
  .audit-table-body {
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  
  .stats__grid::-webkit-scrollbar,
  .audit-table-body::-webkit-scrollbar {
    display: none;
  }
  
  /* 移动端卡片阴影优化 */
  .feature-card,
  .stat-card,
  .audit-dashboard {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  }
  
  /* 移动端动画简化 */
  .scroll-animate {
    transform: translateY(30px);
  }
  
  .stagger-children > * {
    transform: translateY(20px);
  }
  
  /* 安全区域适配 (iPhone X+) */
  .footer__bottom {
    padding-bottom: env(safe-area-inset-bottom, 0);
  }
  
  .nav__list {
    padding-bottom: calc(var(--spacing-xl) + env(safe-area-inset-bottom, 0));
  }
}

/* ===== 横屏模式优化 ===== */
@media (max-width: 768px) and (orientation: landscape) {
  .hero {
    min-height: auto;
    padding: calc(56px + var(--spacing-xl)) 0 var(--spacing-xl);
  }
  
  .hero__title {
    font-size: var(--font-size-2xl);
  }
  
  .hero__subtitle {
    font-size: var(--font-size-base);
  }
  
  .hero__description {
    margin-bottom: var(--spacing-md);
  }
  
  .hero__buttons {
    flex-direction: row;
    justify-content: center;
  }
  
  .hero__buttons .btn {
    width: auto;
    flex: 0 0 auto;
  }
  
  .stats__grid {
    flex-wrap: nowrap;
  }
  
  .stat-card {
    width: 130px;
  }
}

/* ===== 滚动提示指示器 ===== */
@media (max-width: 768px) {
  .stats__grid::after {
    content: '';
    flex: 0 0 var(--spacing-md);
  }
  
  /* 表格滚动提示 */
  .audit-table-body {
    position: relative;
  }
  
  .audit-table-body::after {
    content: '← 左右滑动查看 →';
    position: absolute;
    bottom: -24px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 10px;
    color: var(--color-gray-400);
    white-space: nowrap;
  }
  
  .audit-table-panel {
    margin-bottom: var(--spacing-xl);
  }
}

/* ===== 深色模式支持 (可选) ===== */
@media (prefers-color-scheme: dark) {
  /* 如果需要深色模式，可以在这里添加样式 */
}

/* ===== 减少动画偏好 ===== */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .scroll-animate {
    opacity: 1;
    transform: none;
  }
  
  .stagger-children > * {
    opacity: 1;
    transform: none;
  }
}