/* ==================== 基础重置与变量 ==================== */
:root {
  --color-primary: #1a56db;
  --color-primary-dark: #1040a0;
  --color-primary-light: #3b82f6;
  --color-accent: #f97316;
  --color-accent-dark: #ea580c;
  --color-accent-light: #fdba74;
  --color-purple: #8b5cf6;
  --color-purple-light: #c4b5fd;
  --color-green: #10b981;
  --color-cyan: #06b6d4;
  --color-pink: #ec4899;
  --color-amber: #f59e0b;
  --color-teal: #14b8a6;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-text-lighter: #9ca3af;
  --color-bg: #ffffff;
  --color-bg-light: #f9fafb;
  --color-bg-dark: #111827;
  --color-border: #e5e7eb;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,0.1);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,0.15);
  --font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --transition: 0.3s ease;
}

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

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

body {
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ==================== 通用按钮 ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  gap: 8px;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border-color: var(--color-accent);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(249, 115, 22, 0.35);
}

.btn-outline {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.5);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: #fff;
  transform: translateY(-2px);
}

.btn-outline-light {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,0.4);
}

.btn-outline-light:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.8);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 16px;
}

/* ==================== 通用 Section Header ==================== */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 17px;
  color: var(--color-text-light);
  font-weight: 400;
}

/* ==================== Hero 区 ==================== */
.hero-section {
  position: relative;
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 40%, #1a56db 100%);
  padding: 80px 0 100px;
  overflow: hidden;
  min-height: 600px;
}

.hero-bg-shapes {
  position: absolute;
  inset: 0;
  overflow: hidden;
  pointer-events: none;
}

.hero-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.3;
}

.hero-shape-1 {
  width: 500px;
  height: 500px;
  background: var(--color-accent);
  top: -150px;
  right: -100px;
  opacity: 0.15;
}

.hero-shape-2 {
  width: 400px;
  height: 400px;
  background: var(--color-primary-light);
  bottom: -100px;
  left: -80px;
  opacity: 0.2;
}

.hero-shape-3 {
  width: 300px;
  height: 300px;
  background: var(--color-purple);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  opacity: 0.1;
}

.hero-container {
  display: flex;
  align-items: center;
  gap: 60px;
  position: relative;
  z-index: 1;
}

.hero-content {
  flex: 1;
  max-width: 560px;
}

.hero-badge {
  display: inline-block;
  background: rgba(249, 115, 22, 0.2);
  color: var(--color-accent-light);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 20px;
  border: 1px solid rgba(249, 115, 22, 0.3);
}

.hero-title {
  font-size: 48px;
  font-weight: 900;
  color: #fff;
  line-height: 1.2;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.hero-title-accent {
  background: linear-gradient(135deg, var(--color-accent), #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 22px;
  color: rgba(255,255,255,0.85);
  font-weight: 500;
  margin-bottom: 16px;
  letter-spacing: 0.1em;
}

.hero-desc {
  font-size: 15px;
  color: rgba(255,255,255,0.7);
  line-height: 1.8;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  margin-bottom: 32px;
}

.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.hero-tag {
  display: inline-block;
  background: rgba(255,255,255,0.08);
  color: rgba(255,255,255,0.7);
  padding: 4px 14px;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,0.1);
}

.hero-visual {
  flex: 1;
  position: relative;
  min-height: 400px;
}

.hero-mockup {
  position: absolute;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.hero-mockup-pc {
  width: 480px;
  top: 0;
  right: 0;
  z-index: 2;
  border: 1px solid rgba(255,255,255,0.1);
}

.hero-mockup-mobile {
  width: 200px;
  bottom: -30px;
  right: 400px;
  z-index: 3;
  border: 2px solid rgba(255,255,255,0.15);
  animation: floatMobile 3s ease-in-out infinite;
}

.hero-mockup img {
  width: 100%;
  height: auto;
  display: block;
}

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

/* ==================== 数据指标栏 ==================== */
.metrics-section {
  background: #fff;
  padding: 40px 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
  z-index: 2;
  margin-top: -40px;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

.metric-item {
  text-align: center;
}

.metric-number {
  font-size: 48px;
  font-weight: 900;
  color: var(--color-primary);
  letter-spacing: -0.03em;
  line-height: 1;
}

.metric-suffix {
  font-size: 28px;
  font-weight: 700;
  color: var(--color-accent);
}

.metric-label {
  display: block;
  font-size: 15px;
  color: var(--color-text-light);
  margin-top: 8px;
  font-weight: 500;
}

/* ==================== 痛点/为什么选择 ==================== */
.pain-points-section {
  background: var(--color-bg-light);
  padding: 100px 0;
}

.pain-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.pain-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--color-border);
}

.pain-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.pain-card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.pain-card-icon svg {
  width: 28px;
  height: 28px;
}

.pain-icon-orange {
  background: rgba(249, 115, 22, 0.1);
  color: var(--color-accent);
}

.pain-icon-blue {
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-primary-light);
}

.pain-icon-purple {
  background: rgba(139, 92, 246, 0.1);
  color: var(--color-purple);
}

.pain-card-title {
  font-size: 20px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 10px;
}

.pain-card-desc {
  font-size: 14px;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 20px;
}

.pain-card-solution {
  background: rgba(26, 86, 219, 0.04);
  border-radius: var(--radius-sm);
  padding: 16px;
  border-left: 3px solid var(--color-primary);
}

.solution-label {
  display: inline-block;
  background: var(--color-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 8px;
}

.pain-card-solution p {
  font-size: 13px;
  color: var(--color-primary-dark);
  line-height: 1.7;
}

/* ==================== 核心引擎区 ==================== */
.core-engine-section {
  background: #fff;
  padding: 100px 0;
}

.engine-block {
  display: flex;
  align-items: center;
  gap: 60px;
  margin-bottom: 80px;
}

.engine-block:last-child {
  margin-bottom: 0;
}

.engine-block-reverse {
  flex-direction: row-reverse;
}

.engine-text {
  flex: 1;
}

.engine-badge {
  display: inline-block;
  background: rgba(249, 115, 22, 0.1);
  color: var(--color-accent);
  font-size: 13px;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
}

.engine-title {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-text);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.engine-desc {
  font-size: 15px;
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: 28px;
}

.engine-features {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.engine-feature-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.engine-feature-dot {
  width: 10px;
  height: 10px;
  background: var(--color-accent);
  border-radius: 50%;
  margin-top: 6px;
  flex-shrink: 0;
}

.engine-feature-item h4 {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.engine-feature-item p {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
}

.engine-visual {
  flex: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.engine-visual img {
  width: 100%;
  height: auto;
  display: block;
}

.engine-comparison {
  background: linear-gradient(135deg, #eff6ff, #f0f9ff);
  padding: 0;
}

/* ==================== 功能特性详解 ==================== */
.features-detail-section {
  background: var(--color-bg-light);
  padding: 100px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.feature-card {
  background: #fff;
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--color-border);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

.feature-icon-blue { background: rgba(59,130,246,0.1); color: var(--color-primary-light); }
.feature-icon-orange { background: rgba(249,115,22,0.1); color: var(--color-accent); }
.feature-icon-purple { background: rgba(139,92,246,0.1); color: var(--color-purple); }
.feature-icon-green { background: rgba(16,185,129,0.1); color: var(--color-green); }
.feature-icon-cyan { background: rgba(6,182,212,0.1); color: var(--color-cyan); }
.feature-icon-pink { background: rgba(236,72,153,0.1); color: var(--color-pink); }
.feature-icon-amber { background: rgba(245,158,11,0.1); color: var(--color-amber); }
.feature-icon-teal { background: rgba(20,184,166,0.1); color: var(--color-teal); }

.feature-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.feature-desc {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ==================== 操作流程 ==================== */
.steps-section {
  background: #fff;
  padding: 100px 0;
}

.steps-flow {
  display: flex;
  align-items: flex-start;
  gap: 0;
  justify-content: center;
}

.step-card {
  flex: 1;
  max-width: 240px;
  text-align: center;
  padding: 32px 20px;
  border-radius: var(--radius-lg);
  background: #fff;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  position: relative;
}

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

.step-card-active {
  background: linear-gradient(135deg, #1e3a5f, #1a56db);
  border-color: transparent;
  color: #fff;
}

.step-card-active .step-number {
  color: var(--color-accent-light);
}

.step-card-active .step-title {
  color: #fff;
}

.step-card-active .step-desc {
  color: rgba(255,255,255,0.7);
}

.step-card-active .step-icon {
  color: #fff;
  background: rgba(255,255,255,0.15);
}

.step-number {
  font-size: 32px;
  font-weight: 900;
  color: var(--color-primary);
  opacity: 0.2;
  margin-bottom: 12px;
  letter-spacing: -0.03em;
}

.step-card-active .step-number {
  opacity: 0.5;
}

.step-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--color-bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 16px;
  color: var(--color-primary);
}

.step-icon svg {
  width: 26px;
  height: 26px;
}

.step-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 8px;
}

.step-desc {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.7;
}

.step-connector {
  width: 40px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary-light), var(--color-accent));
  margin-top: 80px;
  flex-shrink: 0;
  border-radius: 1px;
  position: relative;
}

.step-connector::after {
  content: '';
  position: absolute;
  right: -4px;
  top: -3px;
  width: 8px;
  height: 8px;
  border-top: 2px solid var(--color-accent);
  border-right: 2px solid var(--color-accent);
  transform: rotate(45deg);
}

/* ==================== 行业解决方案 ==================== */
.solutions-section {
  background: var(--color-bg-light);
  padding: 100px 0;
}

.solutions-tabs {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin-bottom: 40px;
}

.sol-tab {
  padding: 10px 24px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text-light);
  background: #fff;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: all var(--transition);
}

.sol-tab:hover {
  color: var(--color-primary);
  border-color: var(--color-primary-light);
}

.sol-tab.active {
  background: var(--color-primary);
  color: #fff;
  border-color: var(--color-primary);
}

.solutions-content {
  position: relative;
}

.sol-panel {
  display: none;
  gap: 48px;
  align-items: center;
}

.sol-panel.active {
  display: flex;
}

.sol-info {
  flex: 1;
  display: flex;
  gap: 32px;
}

.sol-pain-list, .sol-solution-list {
  flex: 1;
}

.sol-label {
  display: inline-block;
  font-size: 12px;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 16px;
}

.sol-label-orange {
  background: rgba(249,115,22,0.1);
  color: var(--color-accent);
}

.sol-label-blue {
  background: rgba(59,130,246,0.1);
  color: var(--color-primary);
}

.sol-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.sol-list li {
  font-size: 14px;
  color: var(--color-text-light);
  padding-left: 24px;
  position: relative;
  line-height: 1.6;
}

.sol-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #d1d5db;
}

.sol-list-check li::before {
  background: var(--color-green);
  width: 10px;
  height: 10px;
  border-radius: 2px;
  top: 6px;
}

.sol-list-check li::after {
  content: '';
  position: absolute;
  left: 3px;
  top: 9px;
  width: 4px;
  height: 2px;
  border-bottom: 2px solid #fff;
  border-left: 2px solid #fff;
  transform: rotate(-45deg);
}

.sol-visual {
  flex: 1;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.sol-visual img {
  width: 100%;
  height: auto;
  display: block;
}

/* ==================== 支持平台 ==================== */
.platforms-section {
  background: #fff;
  padding: 80px 0;
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 20px;
}

.platform-item {
  text-align: center;
  padding: 24px 12px;
  border-radius: var(--radius-md);
  background: var(--color-bg-light);
  transition: all var(--transition);
  cursor: default;
}

.platform-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-sm);
}

.platform-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 10px;
}

.platform-icon svg {
  width: 24px;
  height: 24px;
}

.platform-taobao { background: #ff5000; color: #fff; }
.platform-jd { background: #e4393c; color: #fff; }
.platform-pdd { background: #e02e24; color: #fff; }
.platform-douyin { background: #161823; color: #fe2c55; }
.platform-vip { background: #ff5a5f; color: #fff; }
.platform-meituan { background: #ffcc00; color: #333; }
.platform-eleme { background: #009de6; color: #fff; }
.platform-more { background: var(--color-primary); color: #fff; }

.platform-item span {
  font-size: 13px;
  color: var(--color-text-light);
  font-weight: 500;
}

/* ==================== 资源中心 ==================== */
.resources-section {
  background: var(--color-bg-light);
  padding: 100px 0;
}

.resources-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.resource-card {
  background: #fff;
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--color-border);
}

.resource-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}

.resource-img {
  height: 180px;
  overflow: hidden;
}

.resource-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.resource-body {
  padding: 20px;
}

.resource-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 700;
  color: var(--color-primary);
  background: rgba(59,130,246,0.08);
  padding: 3px 10px;
  border-radius: 4px;
  margin-bottom: 10px;
}

.resource-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.5;
  margin-bottom: 8px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.resource-desc {
  font-size: 13px;
  color: var(--color-text-light);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
}

.resource-date {
  font-size: 12px;
  color: var(--color-text-lighter);
}

.resources-more {
  text-align: center;
}

/* ==================== CTA 区 ==================== */
.cta-section {
  background: linear-gradient(135deg, #0f172a 0%, #1a56db 100%);
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: var(--color-accent);
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.1;
  top: -200px;
  right: -200px;
}

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

.cta-title {
  font-size: 36px;
  font-weight: 800;
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.cta-desc {
  font-size: 16px;
  color: rgba(255,255,255,0.7);
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
}

/* ==================== 响应式 ==================== */
@media (max-width: 1024px) {
  .hero-container {
    flex-direction: column;
    text-align: center;
  }
  .hero-content {
    max-width: 100%;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-tags {
    justify-content: center;
  }
  .hero-visual {
    width: 100%;
    min-height: 300px;
    display: flex;
    justify-content: center;
    position: relative;
  }
  .hero-mockup-pc {
    width: 80%;
    position: relative;
    right: auto;
    top: auto;
  }
  .hero-mockup-mobile {
    width: 160px;
    right: auto;
    left: 5%;
    bottom: -10px;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pain-cards {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }
  .engine-block,
  .engine-block-reverse {
    flex-direction: column;
  }
  .engine-visual {
    width: 100%;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .steps-flow {
    flex-direction: column;
    align-items: center;
  }
  .step-connector {
    width: 2px;
    height: 30px;
    margin: 0;
    transform: rotate(90deg);
  }
  .sol-panel.active {
    flex-direction: column;
  }
  .sol-info {
    flex-direction: column;
  }
  .platforms-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  .resources-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .hero-section {
    padding: 60px 0 80px;
  }
  .hero-title {
    font-size: 32px;
  }
  .hero-subtitle {
    font-size: 18px;
  }
  .section-title {
    font-size: 28px;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
    padding: 24px;
  }
  .metric-number {
    font-size: 36px;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .solutions-tabs {
    flex-wrap: wrap;
  }
  .platforms-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .resources-grid {
    grid-template-columns: 1fr;
  }
  .cta-title {
    font-size: 28px;
  }
  .cta-actions {
    flex-direction: column;
    align-items: center;
  }
}

/* ==================== 动画 ==================== */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-up.visible {
  opacity: 1;
  transform: translateY(0);
}