:root {
  /* 基础颜色 */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;

  /* 文本颜色 */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;

  /* 边框和线条 */
  --border-light: #f1f5f9;
  --border-base: #e2e8f0;
  --border-dark: #cbd5e1;

  /* 主题色 */
  --primary-color: #14bff3;
  --primary-hover: #0da3cc;
  --accent-color: #ec4899;

  /* 阴影效果 */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);

  /* 动画过渡 */
  --transition-fast: all 0.15s ease;
  --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0, 1);
  --transition-bounce: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* 全局重置 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  width: 100%;
  overflow-x: hidden;
}

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.6;
  width: 100%;
  overflow-x: hidden;
}

/* 页面入场动画 */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* 滚动进入动画 */
.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.scroll-reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.scroll-reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scroll-reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.scroll-reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

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

ul {
  list-style: none;
}

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

/* 布局工具类 */
.page-root {
  width: 100%;
  padding-top: 72px;
  overflow-x: hidden;
  position: relative;
}

.inner {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
  box-sizing: border-box;
}

/* --- 顶部导航栏 --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 9999;
  height: 72px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  transition: var(--transition-smooth);
  box-sizing: border-box;
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.site-header .inner {
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  box-sizing: border-box;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
  display: flex;
  align-items: center;
  flex-shrink: 0;
  position: relative;
  z-index: 2;
}

.logo img {
  height: 36px;
  margin-right: 10px;
  vertical-align: middle;
}

.nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-link {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition-smooth);
  padding: 8px 12px;
  border-radius: 6px;
  position: relative;
}

.nav-link:hover {
  color: var(--primary-color);
  background: rgba(20, 191, 243, 0.08);
}

.nav-buttons {
  display: flex;
  gap: 12px;
  flex-shrink: 0;
  align-items: center;
  position: relative;
  z-index: 2;
}

.nav-buttons::before,
.nav-buttons::after {
  display: none;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  position: relative;
  z-index: 2;
}

.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  margin: 5px 0;
  transition: var(--transition-base);
}

.mobile-menu-overlay {
  display: none;
}

/* --- 按钮样式 --- */
.btn {
  height: 40px;
  padding: 0 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  display: inline-flex !important;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
  border: 2px solid transparent !important;
  z-index: 50;
  position: relative;
  text-decoration: none !important;
  visibility: visible !important;
  opacity: 1 !important;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, transparent 50%);
  opacity: 0;
  transition: var(--transition-fast);
}

.btn:hover::before {
  opacity: 1;
}

.btn-primary {
  color: #ffffff !important;
  background-color: #14bff3 !important;
  border-color: #14bff3 !important;
  box-shadow: 0 2px 8px rgba(20, 191, 243, 0.3) !important;
  visibility: visible !important;
  opacity: 1 !important;
}

.btn-primary:hover {
  background-color: #0da3cc !important;
  border-color: #0da3cc !important;
  color: #ffffff !important;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(20, 191, 243, 0.4) !important;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(20, 191, 243, 0.3) !important;
}

.btn-outline {
  color: #0f172a !important;
  border-color: #0f172a !important;
  background-color: transparent !important;
  visibility: visible !important;
  opacity: 1 !important;
}

.btn-outline:hover {
  border-color: #14bff3 !important;
  color: #ffffff !important;
  background-color: #14bff3 !important;
}

.btn-large {
  height: 48px;
  padding: 0 28px;
  font-size: 15px;
}

/* --- Hero 区域 --- */
.hero {
  padding: 120px 0 60px;
  background: url('/publish/hero-bg.png') center/cover no-repeat;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(20, 191, 243, 0.08) 0%, transparent 60%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 60px;
  align-items: center;
}

.hero-title {
  font-size: 56px;
  line-height: 1.15;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 24px;
  letter-spacing: -1px;
  animation: fadeInUp 0.6s ease-out;
}

.hero-subtitle {
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-secondary);
  margin-bottom: 36px;
  max-width: 480px;
  animation: fadeInUp 0.6s ease-out 0.1s both;
}

.hero-cta {
  display: flex;
  gap: 16px;
  animation: fadeInUp 0.6s ease-out 0.2s both;
}

.hero-visual {
  max-width: 100%;
  animation: fadeIn 0.8s ease-out 0.3s both;
}

/* Hero 图片与占位符 */
.image-placeholder {
  width: 100%;
  max-width: 100%;
  overflow: hidden;
  border-radius: 16px;
  background-color: var(--bg-tertiary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-smooth);
}

.image-placeholder:hover {
  transform: translateY(-6px) scale(1.01);
  box-shadow: var(--shadow-xl);
}

.image-placeholder img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 600px;
  object-fit: cover;
}

.image-placeholder video {
  display: block;
  width: 100%;
  height: auto;
  max-height: 720px;
  object-fit: cover;
}

@media (max-width: 768px) {
  .image-placeholder img,
  .image-placeholder video {
    max-height: 420px;
  }
}

/* --- 功能展示流 --- */
.feature-stream {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.feature-stream-header {
  text-align: center;
  margin-bottom: 60px;
}

.feature-stream-heading {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
  position: relative;
  display: inline-block;
}

.feature-stream-heading::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  border-radius: 2px;
  margin: 16px auto 0;
}

.stream-item {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 80px;
  align-items: center;
  margin-bottom: 120px;
}

.stream-copy,
.stream-visual {
  min-width: 0;
}

.stream-item.reverse {
  grid-template-columns: 1.3fr 1fr;
}

.stream-item:last-child {
  margin-bottom: 0;
}

.stream-item.reverse .stream-copy {
  order: 2;
}

.stream-item.reverse .stream-visual {
  order: 1;
}

.stream-title {
  font-size: 40px;
  line-height: 1.2;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 24px;
  letter-spacing: -0.5px;
}

.stream-desc {
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.stream-link {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 6px;
  border: 2px solid transparent;
  background-image: linear-gradient(#fff, #fff), linear-gradient(90deg, #14bff3, #67d5f7);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  font-size: 16px;
  font-weight: 600;
  color: var(--primary-color);
  position: relative;
  transition: var(--transition-smooth);
}

.stream-link::after {
  content: "→";
  margin-left: 8px;
  transition: var(--transition-smooth);
}

.stream-link:hover {
  background-image: none;
  background-color: #14bff3;
  color: #ffffff;
  transform: translateX(4px);
}

.stream-link:hover::after {
  transform: translateX(6px);
}

.feature-benefits {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 4px;
}

.feature-benefit-item {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 40px;
  padding: 8px 14px;
  border-radius: 10px;
  border: 1px solid rgba(20, 191, 243, 0.2);
  background: rgba(255, 255, 255, 0.75);
  color: var(--text-secondary);
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  transition: var(--transition-smooth);
}

.feature-benefit-item:hover {
  transform: translateX(4px);
  border-color: rgba(20, 191, 243, 0.45);
  box-shadow: 0 6px 16px rgba(20, 191, 243, 0.12);
}

.feature-benefit-icon {
  width: 20px;
  text-align: center;
  color: var(--primary-color);
  font-size: 16px;
  flex-shrink: 0;
  transition: var(--transition-smooth);
}

.feature-benefit-item:hover .feature-benefit-icon {
  color: var(--primary-hover);
}

/* --- 演进路径部分 --- */
.pipeline-section {
  text-align: center;
  padding: 80px 0;
  background: var(--bg-primary);
}

.pipeline-title {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.pipeline-subtitle {
  max-width: 800px;
  margin: 0 auto 40px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.action-card {
  background: var(--bg-primary);
  border-radius: 16px;
  padding: 48px 32px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border: 1px solid var(--border-light);
}

.action-card:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.action-card h3 {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

/* --- 关于部分 --- */
.about-strip {
  padding: 100px 0;
  background: var(--bg-primary);
  border-top: 1px solid var(--border-light);
}

.about-head h2 {
  font-size: 40px;
  font-weight: 800;
  color: var(--text-primary);
  text-align: center;
  margin-bottom: 40px;
}

.about-desc {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 48px;
  color: var(--text-secondary);
  line-height: 1.8;
  font-size: 16px;
}

.review-summary {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 40px;
}

.review-score {
  font-size: 48px;
  font-weight: 800;
  line-height: 1;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.review-stars {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #f59e0b;
  font-size: 20px;
  margin-bottom: 10px;
}

.review-meta {
  font-size: 14px;
  color: var(--text-tertiary);
}

.review-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}

.review-tip {
  color: var(--text-tertiary);
  font-size: 14px;
  margin: 0;
}

.review-actions {
  display: inline-flex;
  gap: 10px;
}

.review-nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 1px solid var(--border-base);
  background: var(--bg-primary);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.review-nav-btn:hover {
  color: var(--primary-color);
  border-color: rgba(20, 191, 243, 0.45);
  transform: translateY(-1px);
}

.review-nav-btn:focus-visible {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(20, 191, 243, 0.2);
}

.review-grid {
  display: flex;
  gap: 16px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  padding-top: 8px;
  padding-bottom: 8px;
  scrollbar-width: none;
  -ms-overflow-style: none;
  cursor: grab;
}

.review-grid::-webkit-scrollbar {
  display: none;
}

.review-grid.is-dragging {
  cursor: grabbing;
}

.review-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-base);
  border-radius: 14px;
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  min-width: min(360px, 85vw);
  flex: 0 0 min(360px, 85vw);
}

.review-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(20, 191, 243, 0.35);
}

.review-grid.is-dragging .review-card:hover {
  transform: none;
}

.review-text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text-secondary);
  margin-bottom: 18px;
}

.review-user {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.review-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.review-user-stars {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  color: #f59e0b;
  font-size: 12px;
  flex-shrink: 0;
}

@media (prefers-reduced-motion: reduce) {
  .review-card,
  .review-nav-btn {
    transition: none;
  }
}

/* --- FAQ 常见问题部分 --- */
.faq-section {
  padding: 80px 0;
  background: var(--bg-secondary);
}

.faq-title {
  text-align: center;
  font-size: 36px;
  font-weight: 800;
  margin-bottom: 40px;
  color: var(--text-primary);
}

.faq-grid {
  display: grid;
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: var(--bg-primary);
  padding: 24px;
  border-radius: 12px;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.faq-item:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.faq-item-header {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-icon {
  font-size: 20px;
  color: var(--primary-color);
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-icon.open {
  transform: rotate(45deg);
}

.faq-answer {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
  margin-top: 12px;
  animation: fadeIn 0.3s ease-out;
}

/* --- 底部导航栏 --- */
.site-footer {
  background: var(--bg-secondary);
  padding: 80px 0 40px;
  border-top: 1px solid var(--border-light);
  width: 100%;
}

.site-footer.minimal-footer {
  padding: 24px 0 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  align-items: flex-start;
}

.footer-brand {
  display: flex;
  flex-direction: column;
}

.footer-newsletter h3 {
  color: var(--text-primary);
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
}

.footer-newsletter p {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-bottom: 16px;
}

.newsletter-form {
  display: flex;
  gap: 8px;
}

.footer-newsletter input {
  flex-grow: 1;
  max-width: 240px;
  padding: 10px 16px;
  border: 1px solid var(--border-dark);
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  transition: var(--transition-base);
}

.footer-newsletter input:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.1);
}

.footer-bottom {
  margin-top: 60px;
  padding-top: 24px;
  border-top: 1px solid var(--border-base);
}

.site-footer.minimal-footer .footer-bottom {
  margin-top: 0;
  padding-top: 0;
}

.footer-copyright {
  font-size: 13px;
  color: var(--text-tertiary);
  line-height: 1.6;
  text-align: center;
}

.footer-copyright a {
  margin: 0 12px;
  transition: var(--transition-base);
}

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

.footer-column h4 {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 24px;
}

.footer-column ul li {
  margin-bottom: 16px;
}

.footer-column ul a {
  font-size: 14px;
  color: var(--text-secondary);
  transition: var(--transition-base);
}

.footer-column ul a:hover {
  color: var(--primary-color);
}

/* --- 响应式调整 --- */
@media (max-width: 1024px) {
  .hero-grid, .stream-item {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .stream-item.reverse {
    grid-template-columns: 1fr;
  }
  .stream-item.reverse .stream-copy, .stream-item.reverse .stream-visual {
    order: initial;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .inner {
    padding: 0 20px;
  }
  .page-root {
    padding-top: 64px;
  }
  .site-header,
  .site-header .inner {
    height: 64px;
  }
  .logo {
    font-size: 18px;
  }
  .logo img {
    height: 30px;
    margin-right: 8px;
  }
  .nav {
    display: none;
    position: fixed;
    top: 64px;
    left: 12px;
    right: 12px;
    transform: none;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--border-base);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 12px;
    z-index: 1200;
  }
  .site-header.mobile-open .nav {
    display: block;
  }
  .nav-links {
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
  }
  .nav-link {
    display: block;
    width: 100%;
    padding: 10px 12px;
  }
  .nav-buttons {
    display: none;
  }
  .site-header.mobile-open .nav-buttons {
    display: grid;
    position: fixed;
    top: calc(64px + 170px);
    left: 12px;
    right: 12px;
    background: rgba(255, 255, 255, 0.98);
    border: 1px solid var(--border-base);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 12px;
    gap: 10px;
    z-index: 1200;
  }
  .site-header.mobile-open .mobile-menu-btn span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  .site-header.mobile-open .mobile-menu-btn span:nth-child(2) {
    opacity: 0;
  }
  .site-header.mobile-open .mobile-menu-btn span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
  .mobile-menu-btn {
    display: block;
  }
  .mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.35);
    z-index: 1100;
  }
  .site-header.mobile-open .mobile-menu-overlay {
    display: block;
  }
  .hero-title {
    font-size: 40px;
  }
  .hero-subtitle {
    font-size: 16px;
    margin-bottom: 28px;
  }
  .hero-cta {
    flex-wrap: wrap;
  }
  .hero-cta .btn {
    width: 100%;
  }
  .stream-title {
    font-size: 32px;
  }
  .feature-stream-heading {
    font-size: 22px;
  }
  .stream-item {
    gap: 24px;
    margin-bottom: 72px;
  }
  .review-card {
    padding: 20px;
    min-width: 86%;
    flex-basis: 86%;
  }
  .review-toolbar {
    justify-content: center;
  }
  .feature-benefit-item {
    min-height: 38px;
    padding: 8px 12px;
    font-size: 15px;
  }
  .action-card {
    padding: 32px 24px;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .newsletter-form {
    flex-direction: column;
  }
  .footer-newsletter input {
    max-width: 100%;
  }
  .newsletter-form .btn {
    width: 100%;
  }
  .hero {
    padding: 40px 0;
  }
  .feature-stream, .pipeline-section, .about-strip {
    padding: 60px 0;
  }
  .list-card {
    padding: 24px 18px;
  }
  .list-card-inner {
    gap: 20px;
  }
  .list-card-content {
    min-width: 100%;
  }
  .list-card-title,
  .list-card-title.with-icon {
    font-size: 20px !important;
  }
  .list-card-actions {
    width: 100%;
  }
  .list-card-actions .btn {
    width: 100%;
  }
  .cmd-code-block {
    font-size: 12px;
    white-space: normal;
    overflow-wrap: anywhere;
  }
}

@media (max-width: 480px) {
  .inner {
    padding: 0 16px;
  }
  .hero-title {
    font-size: 32px;
  }
  .stream-title {
    font-size: 26px;
  }
  .feature-stream-heading {
    font-size: 18px;
  }
  .feature-benefits {
    gap: 10px;
  }
  .feature-benefit-item {
    font-size: 14px;
    line-height: 1.5;
  }
  .pipeline-title,
  .faq-title,
  .about-head h2 {
    font-size: 28px;
  }
  .review-score {
    font-size: 40px;
  }
  .review-toolbar {
    flex-direction: column;
    align-items: center;
    gap: 10px;
  }
  .review-stars {
    font-size: 18px;
    gap: 6px;
  }
  .review-user {
    justify-content: space-between;
    align-items: center;
  }
  .faq-item {
    padding: 18px;
  }
  .faq-item-header {
    font-size: 16px;
    align-items: flex-start;
    gap: 8px;
  }
  .footer-copyright a {
    display: inline-block;
    margin: 4px 8px;
  }
  .site-header.mobile-open .nav-buttons {
    top: calc(64px + 184px);
  }
}

/* --- 列表/步骤卡片通用封装 (用于使用方法页面) --- */
.list-card {
  width: 100%;
  max-width: 900px;
  text-align: left;
  padding: 32px 40px;
  align-items: flex-start; /* 覆盖 action-card 的居中对齐 */
}

.list-card.step-mode {
  border-left: 4px solid var(--primary-color);
}

.list-card-inner {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
}

.list-card-inner.vertical {
  flex-direction: column;
  gap: 24px;
}

.list-card-inner.center-align {
  align-items: center;
}

.list-card-content {
  flex: 1 1 auto;
  min-width: 0;
}

.list-card-inner.vertical .list-card-content {
  flex: 0 1 auto;
  width: 100%;
}

.list-card-title {
  font-size: 24px !important;
  margin-bottom: 12px !important;
}

.list-card-title.with-icon {
  font-size: 22px !important;
  display: flex;
  align-items: center;
  gap: 10px;
}

.list-card-icon {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--primary-color);
  color: #fff;
  font-size: 14px;
  flex-shrink: 0;
}

.list-card-desc {
  font-size: 16px !important;
  margin: 0 !important;
  line-height: 1.6;
  color: var(--text-secondary);
}

.list-card-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.list-card-content .list-card-actions {
  margin-top: 14px;
}

.cmd-code-block {
  background: #f5f5f5;
  padding: 6px 10px;
  border-radius: 6px;
  display: block;
  width: 100%;
  max-width: 100%;
  margin-top: 12px;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.btn-nowrap {
  white-space: nowrap;
}

/* 视频占位符 */
.video-placeholder {
  position: relative;
  width: 100%;
  padding-top: 56.25%;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
}

.vkcode-image-placeholder {
  padding-top: 0;
  aspect-ratio: 647 / 679;
  min-height: 220px;
  background: #fff;
}

.video-placeholder-inner {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: rgba(255,255,255,0.7);
}

.video-placeholder-inner svg {
  margin-bottom: 16px;
  opacity: 0.8;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.video-placeholder-inner svg:hover {
  opacity: 1;
  transform: scale(1.1);
}

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

.site-logo-image {
  height: 36px;
  margin-right: 10px;
  vertical-align: middle;
}

.nav-link-active {
  color: var(--primary-color);
}

.resource-hero {
  padding: 100px 0 40px;
  text-align: center;
}

.resource-hero-title {
  font-size: 40px;
  margin-bottom: 16px;
}

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

.resource-hero-subtitle {
  margin: 0 auto 40px;
  max-width: none;
}

.resource-list-wrap {
  margin-top: 60px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: center;
}

.resource-debug-section {
  padding: 60px 0 100px;
  text-align: center;
  background: var(--bg-tertiary);
}

.resource-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 12px;
  outline: none;
  object-fit: cover;
  background: #000;
}

.resource-image {
  object-fit: contain;
  background: #fff;
}

.verify-hero {
  padding: 120px 0 80px;
}

.auth-card {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-primary);
  border-radius: 16px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-base);
  padding: 40px;
}

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

.auth-card-header h2 {
  font-size: 28px;
  color: var(--text-primary);
  margin-bottom: 8px;
}

.auth-card-header p {
  color: var(--text-secondary);
}

.form-group {
  margin-bottom: 24px;
  text-align: left;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: var(--text-primary);
}

.input-group {
  position: relative;
}

.input-group i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
}

.form-control {
  width: 100%;
  padding: 14px 16px 14px 44px;
  border: 1px solid var(--border-base);
  border-radius: 8px;
  font-size: 15px;
  transition: var(--transition-base);
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.form-control:focus {
  border-color: #10b981;
  outline: none;
  background: var(--bg-primary);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.btn-submit {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  width: 100%;
  background: #10b981;
  color: #fff;
  border: none;
  padding: 14px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-base);
}

.btn-submit:hover {
  background: #059669;
  transform: translateY(-2px);
}

.btn-submit:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  transform: none;
}

.btn-query {
  background: var(--primary-color);
}

.btn-query:hover {
  background: var(--primary-hover);
}

.btn-buy {
  background: #f59e0b;
}

.btn-buy:hover {
  background: #d97706;
}

.alert {
  padding: 16px;
  border-radius: 8px;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 12px;
  text-align: left;
}

.alert-error {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #f87171;
}

.alert-success {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #4ade80;
}

.tool-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-top: 28px;
  padding-top: 28px;
  border-top: 1px solid var(--border-base);
}

.tool-links a {
  color: var(--text-secondary);
  transition: var(--transition-fast);
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
}

.tool-links a:hover {
  color: #10b981;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 32px;
  background: var(--bg-secondary);
  padding: 24px;
  border-radius: 12px;
  text-align: left;
  border: 1px solid var(--border-light);
}

.detail-header {
  grid-column: 1 / -1;
  border-bottom: 1px solid var(--border-base);
  padding-bottom: 12px;
  margin-bottom: 8px;
}

.detail-title {
  font-size: 18px;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.detail-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.detail-item-full {
  grid-column: 1 / -1;
}

.detail-label {
  font-size: 13px;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.detail-value {
  font-size: 15px;
  color: var(--text-primary);
  font-weight: 600;
  padding-left: 20px;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success {
  background: #dcfce7;
  color: #166534;
}

.badge-danger {
  background: #fee2e2;
  color: #991b1b;
}

.badge-primary {
  background: #e0f2fe;
  color: #0369a1;
}

.time-info {
  background: var(--bg-secondary);
  padding: 10px 16px;
  border-radius: 8px;
  margin-bottom: 24px;
  color: var(--text-secondary);
  font-size: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border-light);
}

.auth-action-row {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
}

.detail-section-hidden {
  display: none;
}

.icon-success {
  color: #10b981;
}

.faq-item-header-open {
  margin-bottom: 12px;
}

@media (max-width: 640px) {
  .auth-card {
    padding: 24px;
    border-radius: 12px;
  }

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

  .tool-links {
    gap: 14px;
    flex-wrap: wrap;
  }

  .auth-action-row {
    flex-direction: column;
    gap: 12px;
  }
}

/* --- Verify页面专用样式 --- */
.verify-hero {
  padding: 100px 0 80px;
  text-align: center;
}

.verify-hero-title {
  font-size: 42px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
}

.verify-hero-title i {
  font-size: 38px;
}

.verify-hero-subtitle {
  margin: 0 auto 48px;
  max-width: 700px;
  font-size: 18px;
}

/* 卡密验证区域内的重要提示 */
.auth-notice {
  margin-top: 28px;
  padding: 24px;
  background: linear-gradient(135deg, #fef3c7, #fde68a);
  border-radius: 12px;
  border: 1px solid #f59e0b;
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.auth-notice-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  border-radius: 50%;
  background: #f59e0b;
  color: #fff;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.auth-notice-content {
  flex: 1;
  text-align: center;
}

.auth-notice-title {
  font-size: 18px;
  font-weight: 700;
  color: #92400e;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
  text-align: center;
}

.auth-notice-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin: 0 auto;
  padding: 0;
  max-width: 520px;
  text-align: left;
}

.auth-notice-list li {
  font-size: 14px;
  line-height: 1.6;
  color: #78350f;
  padding-left: 0;
}

.auth-notice-list li strong {
  color: #92400e;
  font-weight: 600;
}

/* Verify页面FAQ区域 */
.verify-faq {
  padding: 80px 0;
  background: var(--bg-secondary);
}

/* Verify页面响应式样式 */
@media (max-width: 768px) {
  .verify-hero-title {
    font-size: 32px;
    flex-direction: column;
    gap: 12px;
  }

  .verify-hero-title i {
    font-size: 32px;
  }

  .verify-hero-subtitle {
    font-size: 16px;
    margin-bottom: 36px;
  }

  .auth-notice {
    flex-direction: column;
    gap: 16px;
    padding: 20px;
  }

  .auth-notice-icon {
    width: 40px;
    height: 40px;
    min-width: 40px;
    font-size: 18px;
  }

  .auth-notice-title {
    font-size: 16px;
  }

  .auth-notice-list {
    max-width: 100%;
  }

  .auth-notice-list li {
    font-size: 13px;
  }

  .verify-faq {
    padding: 60px 0;
  }
}

@media (max-width: 480px) {
  .verify-hero-title {
    font-size: 26px;
  }

  .auth-notice {
    padding: 18px 16px;
  }

  .auth-notice-title {
    font-size: 15px;
  }

  .auth-notice-list li {
    font-size: 12px;
  }
}

/* --- resources.html 移动端布局修复 --- */
@media (max-width: 768px) {
  .resource-list-wrap {
    margin-top: 40px;
    gap: 20px;
  }

  .list-card {
    padding: 22px 16px;
  }

  .list-card-inner {
    flex-direction: column;
    align-items: stretch;
    gap: 14px;
  }

  .list-card-inner.vertical {
    gap: 14px;
  }

  .list-card-content {
    min-width: 0;
    width: 100%;
  }

  .list-card-title,
  .list-card-title.with-icon,
  .list-card-desc {
    max-width: 100%;
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .list-card-title.with-icon {
    flex-wrap: wrap;
  }

  .list-card-actions,
  .list-card-actions .btn {
    width: 100%;
    max-width: 100%;
  }

  .list-card-actions .btn-nowrap {
    white-space: normal;
  }

  .list-card-content .list-card-actions {
    margin-top: 12px;
  }

  .cmd-code-block {
    overflow-wrap: anywhere;
    word-break: break-word;
  }

  .vkcode-image-placeholder {
    min-height: 180px;
  }
}

@media (max-width: 480px) {
  .resource-list-wrap {
    gap: 16px;
  }

  .list-card {
    padding: 20px 14px;
  }

  .list-card-inner,
  .list-card-inner.vertical {
    gap: 12px;
  }
}