/* Google Chrome 风格样式 */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box
}

:root {
  --g-blue-600: #1a73e8;
  --g-blue-700: #185abc;
  --g-blue-500: #4285f4;
  --g-wave-pattern: url("data:image/svg+xml,%3Csvg width='220' height='140' viewBox='0 0 220 140' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M0,22C22,2,44,2,66,22S110,42,132,22S176,2,220,22' fill='none' stroke='white' stroke-width='2.4' opacity='0.26'/%3E%3Cpath d='M0,46C22,26,44,26,66,46S110,66,132,46S176,26,220,46' fill='none' stroke='white' stroke-width='2.4' opacity='0.12'/%3E%3Cpath d='M0,70C22,50,44,50,66,70S110,90,132,70S176,50,220,70' fill='none' stroke='white' stroke-width='2.4' opacity='0.26'/%3E%3Cpath d='M0,94C22,74,44,74,66,94S110,114,132,94S176,74,220,94' fill='none' stroke='white' stroke-width='2.4' opacity='0.12'/%3E%3Cpath d='M0,118C22,98,44,98,66,118S110,138,132,118S176,98,220,118' fill='none' stroke='white' stroke-width='2.4' opacity='0.26'/%3E%3C/svg%3E");
}

body {
  font-family: 'Google Sans', 'Product Sans', Roboto, 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: #202124;
  background: #fff;
  -webkit-font-smoothing: antialiased;
}

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

/* 头部导航 */
header {
  padding: 16px 0;
  background-color: var(--g-blue-600);
  background-image: var(--g-wave-pattern), linear-gradient(180deg, var(--g-blue-600) 0%, var(--g-blue-700) 100%);
  background-size: 220px 140px, cover;
  background-repeat: repeat, no-repeat;
  background-position: 0 0, 0 0;
  background-attachment: fixed, fixed;
  box-shadow: none;
  position: sticky;
  top: 0;
  z-index: 100;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 32px;
  width: auto;
  display: block;
}

.logo-text {
  display: flex;
  align-items: center;
  margin-left: 10px;
  font-family: 'Product Sans', sans-serif;
  color: #fff;
}

.logo-mark {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-title-link {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: inherit;
}

.logo-title {
  font-size: 22px;
  margin-right: 16px;
  line-height: 1;
  color: #fff;
}

.logo-badge {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-badge-link {
  color: inherit;
  text-decoration: none;
}

.logo-badge-link:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.logo-badge-link:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.95);
  outline-offset: 4px;
  border-radius: 6px;
}

.nav-links a {
  margin-left: 32px;
  text-decoration: none;
  color: #fff;
  font-weight: 500;
  font-size: 14px;
  transition: color .2s;
}

.nav-links a:hover {
  color: #202124;
}

/* 英雄区域 */
.hero {
  padding: 100px 0 80px;
  background-color: var(--g-blue-600);
  background-image: var(--g-wave-pattern), linear-gradient(180deg, var(--g-blue-600) 0%, var(--g-blue-700) 100%);
  background-size: 220px 140px, cover;
  background-repeat: repeat, no-repeat;
  background-position: 0 0, 0 0;
  background-attachment: fixed, fixed;
  color: #fff;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero.container {
  max-width: 100%;
  padding-left: 0;
  padding-right: 0;
}

/* .hero::before rule removed */

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-logo {
  margin-top: -8px;
  margin-bottom: 24px;
  display: inline-flex;
  align-items: center;
  padding: 12px 20px;
  background: rgba(255, 255, 255, 0.78);
  border: 1px solid rgba(60, 64, 67, .15);
  border-radius: 12px;
  box-shadow: 0 1px 2px 0 rgba(60, 64, 67, .3), 0 1px 3px 1px rgba(60, 64, 67, .15);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.hero-logo img {
  display: block;
  filter: drop-shadow(0 1px 1px rgba(60, 64, 67, .25));
}

.hero-text {
  text-align: center;
  max-width: 800px;
  margin-bottom: 40px;
}

h1 {
  font-size: 52px;
  font-weight: 500;
  margin-bottom: 20px;
  line-height: 1.15;
  color: #fff;
  letter-spacing: -.5px;
}

.subtitle {
  font-size: 18px;
  color: rgba(255, 255, 255, 0.92);
  margin-bottom: 32px;
  line-height: 1.6;
}

.cta-btn {
  display: inline-block;
  background: #1a73e8;
  color: #fff;
  padding: 12px 32px;
  text-decoration: none;
  border-radius: 24px;
  font-size: 16px;
  font-weight: 500;
  transition: all .2s;
  box-shadow: 0 1px 2px 0 rgba(60, 64, 67, .3), 0 1px 3px 1px rgba(60, 64, 67, .15);
}

.cta-btn:hover {
  background: #1557b0;
  box-shadow: 0 1px 3px 0 rgba(60, 64, 67, .3), 0 4px 8px 3px rgba(60, 64, 67, .15);
}

.cta-btn:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.8);
  outline-offset: 3px;
}

.hero .cta-btn {
  background: #fff;
  color: #1a73e8;
  box-shadow: 0 1px 2px 0 rgba(60, 64, 67, .3), 0 1px 3px 1px rgba(60, 64, 67, .15);
}

.hero .cta-btn:hover {
  background: #f8f9fa;
  color: #174ea6;
}

.hero .cta-btn:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.95);
  outline-offset: 4px;
}

.small-text {
  margin-top: 16px;
  font-size: 12px;
  color: rgba(255, 255, 255, 0.76);
}

.hero-update-link {
  display: inline-block;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.95);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: rgba(255, 255, 255, 0.55);
}

.hero-update-link:hover {
  color: #fff;
  text-decoration-color: rgba(255, 255, 255, 0.9);
}

.hero-update-link:focus-visible {
  outline: 3px solid rgba(255, 255, 255, 0.95);
  outline-offset: 4px;
  border-radius: 6px;
}

.hero-image {
  text-align: center;
  margin-top: 40px;
  max-width: 900px;
  width: 100%;
}

.hero-image img,
.hero-image video {
  max-width: 100%;
  height: auto;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .3);
  border: 4px solid rgba(255, 255, 255, 0.2);
}

.hero-flow {
  margin-top: 16px;
  width: 100%;
  overflow: hidden;
}

.hero-flow-track {
  display: flex;
  align-items: center;
  gap: 16px;
  width: max-content;
  padding: 2px 2px 10px;
  animation: hero-flow 60s linear infinite;
  will-change: transform;
}

.hero-flow:hover .hero-flow-track {
  animation-play-state: paused;
}

.hero-flow-track img {
  height: 78px;
  width: auto;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid rgba(60, 64, 67, .18);
  box-shadow: 0 1px 2px rgba(60, 64, 67, .2);
}

@keyframes hero-flow {
  from {
    transform: translateX(0);
  }
  to {
    transform: translateX(-50%);
  }
}

/* 功能区域 */
.features {
  padding: 80px 0;
  background-color: var(--g-blue-600);
  background-image: var(--g-wave-pattern), linear-gradient(180deg, var(--g-blue-600) 0%, var(--g-blue-700) 100%);
  background-size: 220px 140px, cover;
  background-repeat: repeat, no-repeat;
}

.features h2 {
  text-align: center;
  font-size: 44px;
  font-weight: 400;
  margin-bottom: 60px;
  color: #fff;
  letter-spacing: -.5px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}

.feature-card {
  background: #fff;
  padding: 28px;
  border-radius: 12px;
  border: 2px solid #e8eaed;
  transition: all .3s;
  display: flex;
  flex-direction: column;
}

.feature-card:hover {
  border-color: #1a73e8;
  box-shadow: 0 8px 24px rgba(26, 115, 232, .15);
  transform: translateY(-2px);
}

.feature-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.feature-icon img {
  width: 32px;
  height: 32px;
  filter: brightness(0) invert(1);
}

.feature-card h3 {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 12px;
  color: #202124;
}

.feature-card p {
  color: #5f6368;
  font-size: 14px;
  line-height: 1.6;
}

/* 平台区域 */
.platforms {
  padding: 80px 0;
  background: #f8f9fa;
}

.platforms h2 {
  text-align: center;
  font-size: 44px;
  font-weight: 400;
  margin-bottom: 60px;
  color: #202124;
  letter-spacing: -.5px;
}

.platform-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
}

.platform-card {
  background: #fff;
  padding: 32px 28px;
  border-radius: 16px;
  text-align: center;
  border: 2px solid #e8eaed;
  transition: all .3s;
  flex: 0 0 calc(20% - 16px);
  min-width: 180px;
}

.platform-card:hover {
  border-color: #1a73e8;
  box-shadow: 0 8px 24px rgba(26, 115, 232, .15);
  transform: translateY(-4px);
}

/* Scramble Order */
.platform-card:nth-child(1) {
  order: 3;
}

/* Windows */
.platform-card:nth-child(2) {
  order: 5;
}

/* Mac */
.platform-card:nth-child(3) {
  order: 1;
}

/* Linux */
.platform-card:nth-child(4) {
  order: 4;
}

/* Android */
.platform-card:nth-child(5) {
  order: 2;
}

/* iOS */

.platform-card img {
  width: 64px;
  height: 64px;
  margin-bottom: 16px;
}

.platform-card h3 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 8px;
  color: #202124;
}

.platform-card p {
  font-size: 13px;
  color: #5f6368;
  margin-bottom: 16px;
}

.download-link {
  display: inline-block;
  color: #1a73e8;
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  padding: 8px 16px;
  border-radius: 4px;
  transition: background .2s;
}

.download-link:hover {
  background: #e8f0fe;
}

/* 支持区域 */
.support {
  padding: 80px 0;
  background: #fff;
  border-top: 1px solid #e8eaed;
}

.support h2 {
  text-align: center;
  font-size: 40px;
  font-weight: 400;
  margin-bottom: 32px;
  color: #202124;
}

.support p {
  max-width: 800px;
  margin: 0 auto;
  font-size: 16px;
  color: #5f6368;
  line-height: 1.8;
  text-align: center;
}

/* 页脚 */
footer {
  background: #fff;
  padding: 40px 0;
  border-top: 1px solid #dadce0;
  margin-top: 80px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.footer-logo img {
  height: 30px;
  width: auto;
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: #5f6368;
  text-decoration: none;
  font-size: 14px;
  transition: color .2s;
}

.footer-links a:hover {
  color: #202124;
}

.footer-text {
  text-align: center;
  color: #5f6368;
  font-size: 12px;
}

/* 下载页面特定样式 */
.download-hero {
  align-items: center;
}

.download-page header {
  background: #fff;
  background-image: none;
  box-shadow: none;
  border-bottom: 1px solid #dadce0;
}

.download-page .nav-links a {
  color: #5f6368;
}

.download-page .nav-links a:hover {
  color: #202124;
}

.download-page .hero {
  min-height: auto;
  padding: 72px 0 56px;
  background: #fff;
  background-image: none;
  background-attachment: initial;
  color: #202124;
  display: block;
}

.download-page .hero.container {
  max-width: 1200px;
  padding-left: 24px;
  padding-right: 24px;
}

.download-page .hero-logo {
  padding: 0;
  background: transparent;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
}

.download-page .hero-logo img {
  filter: none;
}

.download-page h1 {
  font-size: 46px;
  color: #202124;
}

.download-page .hero-text {
  max-width: 720px;
  margin-bottom: 28px;
}

.download-page .subtitle {
  color: #5f6368;
}

.download-page .small-text {
  color: #5f6368;
}

.download-page .cta-btn {
  background: var(--g-blue-600);
  color: #fff;
}

.download-page .cta-btn:hover {
  background: var(--g-blue-700);
  color: #fff;
}

.download-page .cta-btn:focus-visible {
  outline: 3px solid rgba(26, 115, 232, 0.35);
  outline-offset: 4px;
}

.download-page .hero-image {
  margin-top: 28px;
  max-width: 760px;
  display: none;
}

.download-page .hero-image img {
  border: 0;
  box-shadow: none;
}

@media (min-width: 1100px) {
  .download-page .hero-image {
    display: block;
  }
}

.download-section {
  padding: 64px 0;
  background: #fff;
}

.download-section > .container > h2 {
  text-align: center;
  font-size: 44px;
  font-weight: 400;
  margin-bottom: 60px;
  color: #202124;
}

.download-section .container {
  max-width: 860px;
}

.download-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
  align-items: start;
  max-width: 760px;
  margin: 0 auto;
}

.download-primary {
  border: 1px solid #dadce0;
  border-radius: 16px;
  padding: 32px;
  background: #fff;
  box-shadow: none;
  text-align: center;
}

.download-primary-header {
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 20px;
  justify-content: center;
}

.download-product-logo {
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
}

.download-primary-title h2 {
  font-size: 32px;
  font-weight: 500;
  margin: 0;
  color: #202124;
  letter-spacing: -0.3px;
}

.download-primary-subtitle {
  margin-top: 6px;
  font-size: 13px;
  color: #5f6368;
}

.download-meta {
  margin-top: 10px;
  font-size: 12px;
  color: #5f6368;
}

.download-details-compact {
  margin-top: 20px;
  margin-bottom: 0;
}

.download-details-compact ul {
  text-align: left;
}

.download-details-compact li {
  position: relative;
  padding-left: 22px;
}

.download-details-compact li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #34a853;
  font-weight: 700;
}

.download-secondary-card {
  border: 1px solid #dadce0;
  border-radius: 16px;
  padding: 24px;
  background: #fff;
}

.download-secondary-card h3 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 14px;
  color: #202124;
}

.download-platform-details {
  border-top: 1px solid rgba(218, 220, 224, 0.9);
  padding-top: 12px;
  margin-top: 12px;
}

.download-platform-details:first-of-type {
  border-top: 0;
  padding-top: 0;
  margin-top: 0;
}

.download-platform-details summary {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: baseline;
  column-gap: 12px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  font-weight: 500;
  color: #1a73e8;
}

.download-platform-details summary::-webkit-details-marker {
  display: none;
}

.download-platform-details summary:after {
  content: "▾";
  color: #5f6368;
  font-size: 14px;
  line-height: 1;
  transform: rotate(0deg);
  transition: transform 0.2s ease;
}

.download-platform-details[open] summary:after {
  transform: rotate(180deg);
}

.download-platform-details[open] summary {
  margin-bottom: 12px;
}

.download-platform-details summary:focus-visible {
  outline: 3px solid rgba(26, 115, 232, 0.35);
  outline-offset: 6px;
  border-radius: 10px;
}

.download-platform-meta {
  font-size: 12px;
  font-weight: 400;
  color: #5f6368;
  text-align: right;
}

.download-platform-body .version-info {
  margin-bottom: 12px;
}

.download-btn-secondary {
  display: block;
  text-align: center;
  margin-top: 16px;
  padding: 12px 18px;
  border-radius: 999px;
  font-size: 14px;
}

.download-mobile-links {
  display: flex;
  gap: 12px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid rgba(218, 220, 224, 0.9);
}

.download-mobile-link {
  flex: 1;
  text-align: center;
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid #dadce0;
  background: #fff;
  color: #1a73e8;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.download-mobile-link:hover {
  background: #e8f0fe;
  border-color: #aecbfa;
}

.version-info {
  font-size: 13px;
  color: #5f6368;
  margin-bottom: 24px;
}

.download-details {
  width: 100%;
  margin-bottom: 24px;
}

.download-details ul {
  list-style: none;
  text-align: left;
}

.download-details li {
  padding: 8px 0;
  font-size: 14px;
  color: #5f6368;
}

.download-btn-primary {
  display: inline-block;
  background: #1a73e8;
  color: #fff;
  padding: 14px 32px;
  text-decoration: none;
  border-radius: 24px;
  font-size: 16px;
  font-weight: 500;
  transition: all .2s;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .2);
  margin-bottom: 12px;
}

.download-btn-primary:hover {
  background: #1557b0;
  box-shadow: 0 4px 8px rgba(0, 0, 0, .25);
}

.file-size {
  font-size: 12px;
  color: #5f6368;
}

@media (max-width: 900px) {
  .download-layout {
    grid-template-columns: 1fr;
  }
}

/* 安装指南 */
.installation-guide {
  padding: 80px 0;
  background: #f8f9fa;
}

.installation-guide h2 {
  text-align: center;
  font-size: 40px;
  font-weight: 400;
  margin-bottom: 60px;
  color: #202124;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 40px;
}

.step {
  text-align: center;
}

.step-number {
  width: 56px;
  height: 56px;
  background: #1a73e8;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  font-weight: 500;
  margin: 0 auto 20px;
}

.step h3 {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 12px;
  color: #202124;
}

.step p {
  font-size: 14px;
  color: #5f6368;
  line-height: 1.6;
}

/* 系统要求 */
.requirements {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 32px;
  margin-top: 40px;
}

.req-column h4 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 16px;
  color: #202124;
}

.req-column ul {
  list-style: none;
}

.req-column li {
  padding: 8px 0;
  font-size: 14px;
  color: #5f6368;
  line-height: 1.6;
  padding-left: 20px;
  position: relative;
}

.req-column li:before {
  content: "•";
  position: absolute;
  left: 0;
  color: #1a73e8;
  font-weight: bold;
}

/* PC页面特定样式 */
.desktop-platforms {
  padding: 80px 0;
  background: #fff;
}

.desktop-platforms h2 {
  text-align: center;
  font-size: 44px;
  font-weight: 400;
  margin-bottom: 60px;
  color: #202124;
}

.desktop-platform-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 32px;
}

.desktop-platform-card {
  background: #fff;
  border: 1px solid #dadce0;
  border-radius: 16px;
  padding: 40px 32px;
  display: flex;
  flex-direction: column;
  transition: all .3s;
}

.desktop-platform-card:hover {
  border-color: #1a73e8;
  box-shadow: 0 4px 12px rgba(26, 115, 232, .2);
  transform: translateY(-4px);
}

.platform-header {
  text-align: center;
  margin-bottom: 32px;
}

.platform-header img {
  width: 80px;
  height: 80px;
  margin-bottom: 16px;
}

.platform-header h3 {
  font-size: 24px;
  font-weight: 500;
  color: #202124;
}

.platform-features {
  flex: 1;
  margin-bottom: 24px;
}

.platform-features h4 {
  font-size: 18px;
  font-weight: 500;
  margin-bottom: 16px;
  color: #202124;
}

.platform-features ul {
  list-style: none;
  margin-bottom: 20px;
}

.platform-features li {
  padding: 8px 0;
  font-size: 14px;
  color: #5f6368;
  padding-left: 20px;
  position: relative;
}

.platform-features li:before {
  content: "✓";
  position: absolute;
  left: 0;
  color: #34a853;
  font-weight: bold;
}

.system-req {
  font-size: 12px;
  color: #5f6368;
  padding: 12px;
  background: #f8f9fa;
  border-radius: 8px;
}

.download-link-large {
  display: block;
  background: #1a73e8;
  color: #fff;
  padding: 14px 32px;
  text-decoration: none;
  border-radius: 24px;
  font-size: 16px;
  font-weight: 500;
  text-align: center;
  transition: all .2s;
  box-shadow: 0 1px 3px rgba(0, 0, 0, .2);
}

.download-link-large:hover {
  background: #1557b0;
  box-shadow: 0 4px 8px rgba(0, 0, 0, .25);
}

/* 详细功能展示 */
.desktop-features-detailed {
  padding: 80px 0;
  background: #f8f9fa;
}

.desktop-features-detailed h2 {
  text-align: center;
  font-size: 44px;
  font-weight: 400;
  margin-bottom: 60px;
  color: #202124;
}

.detailed-features {
  display: flex;
  flex-direction: column;
  gap: 60px;
}

.detailed-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.detailed-feature.reverse {
  direction: rtl;
}

.detailed-feature.reverse>* {
  direction: ltr;
}

.feature-image img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, .1);
}

.feature-text h3 {
  font-size: 28px;
  font-weight: 400;
  margin-bottom: 16px;
  color: #202124;
}

.feature-text p {
  font-size: 16px;
  color: #5f6368;
  line-height: 1.8;
}

/* 响应式设计 */
@media (max-width:768px) {
  .hero {
    padding: 60px 0 50px;
  }

  .hero-content {
    flex-direction: column;
  }

  .hero-text {
    text-align: center;
  }

  h1 {
    font-size: 40px;
  }

  .download-page h1 {
    font-size: 36px;
  }

  .features h2,
  .platforms h2,
  .download-section h2,
  .desktop-platforms h2,
  .desktop-features-detailed h2 {
    font-size: 32px;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .platform-grid {
    flex-direction: column;
    align-items: stretch;
  }

  .platform-card {
    flex: 1 1 100%;
    min-width: auto;
  }

  .articles-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

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

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

  .desktop-platform-grid {
    grid-template-columns: 1fr;
  }

  .detailed-feature {
    grid-template-columns: 1fr;
  }

  .detailed-feature.reverse {
    direction: ltr;
  }

  .feature-text h3 {
    font-size: 24px;
  }

  .footer-content {
    flex-direction: column;
    gap: 20px;
  }

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

@media (max-width:1024px) and (min-width:769px) {
  .feature-grid {
    grid-template-columns: 1fr;
  }

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

  .platform-card {
    flex: 0 0 calc(33.333% - 14px);
  }
}

/* 文章区域 */
.articles-section {
  padding: 80px 0;
  background: #fff;
}

.articles-section h2 {
  text-align: center;
  font-size: 44px;
  font-weight: 400;
  margin-bottom: 16px;
  color: #202124;
}

.section-subtitle {
  text-align: center;
  font-size: 18px;
  color: #5f6368;
  margin-bottom: 60px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
  max-width: 1400px;
  margin: 0 auto;
}

.article-card {
  background: #fff;
  border-radius: 16px;
  overflow: hidden;
  border: 2px solid #e8eaed;
  transition: all .3s;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  border-color: #1a73e8;
  box-shadow: 0 8px 24px rgba(26, 115, 232, .15);
  transform: translateY(-4px);
}

.article-card a {
  text-decoration: none;
  color: inherit;
  display: block;
}

.article-thumb {
  width: 100%;
  height: 220px;
  object-fit: cover;
}

.article-card-content {
  padding: 24px;
}

.article-card-content h3 {
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 12px;
  color: #202124;
  line-height: 1.4;
}

.article-card-content p {
  font-size: 14px;
  color: #5f6368;
  line-height: 1.6;
  margin-bottom: 16px;
}

.article-category-tag {
  display: inline-block;
  padding: 6px 12px;
  background: #e8f0fe;
  color: #1a73e8;
  border-radius: 16px;
  font-size: 12px;
  font-weight: 500;
}

/* 文章页面样式 */
.article-container {
  padding: 60px 0;
  max-width: 900px;
}

.article-header {
  margin-bottom: 40px;
}

.article-header h1 {
  font-size: 40px;
  font-weight: 400;
  margin-bottom: 20px;
  color: #202124;
  line-height: 1.3;
}

.article-meta {
  display: flex;
  gap: 20px;
  margin-bottom: 32px;
  font-size: 14px;
  color: #5f6368;
}

.article-date {
  display: flex;
  align-items: center;
}

.article-category {
  display: inline-block;
  padding: 4px 12px;
  background: #e8f0fe;
  color: #1a73e8;
  border-radius: 12px;
  font-weight: 500;
}

.article-featured-image {
  width: 100%;
  height: auto;
  border-radius: 12px;
  margin-bottom: 40px;
}

.article-content {
  font-size: 18px;
  line-height: 1.8;
  color: #202124;
}

.article-intro {
  font-size: 20px;
  color: #5f6368;
  line-height: 1.7;
  margin-bottom: 40px;
  padding: 24px;
  background: #f8f9fa;
  border-left: 4px solid #1a73e8;
  border-radius: 4px;
}

.article-content h2 {
  font-size: 28px;
  font-weight: 500;
  margin-top: 48px;
  margin-bottom: 20px;
  color: #202124;
}

.article-content p {
  margin-bottom: 24px;
}

.article-image {
  width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 32px 0;
  box-shadow: 0 2px 8px rgba(0, 0, 0, .1);
}

.article-content strong {
  font-weight: 600;
  color: #202124;
}

.article-content ul,
.article-content ol {
  margin: 20px 0;
  padding-left: 32px;
}

.article-content li {
  margin-bottom: 12px;
}

.article-conclusion {
  margin-top: 60px;
  padding: 32px;
  background: #f8f9fa;
  border-radius: 12px;
}

.article-conclusion h2 {
  margin-top: 0;
  font-size: 24px;
}

.article-conclusion a {
  color: #1a73e8;
  text-decoration: none;
  font-weight: 500;
}

.article-conclusion a:hover {
  text-decoration: underline;
}

.article-footer {
  margin-top: 60px;
  padding-top: 32px;
  border-top: 1px solid #dadce0;
}

.back-link {
  color: #1a73e8;
  text-decoration: none;
  font-size: 16px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  transition: color .2s;
}

.back-link:hover {
  color: #1557b0;
}

/* 平滑滚动 */
html {
  scroll-behavior: smooth;
}

/* 链接悬停效果 */
a {
  transition: all .2s ease;
}

/* 图片优化 */
img {
  max-width: 100%;
  height: auto;
}