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

html,
body {
  height: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  color: #1b1f23;
  background-color: #f5f7fb;
  line-height: 1.6;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 16px;
}

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(15, 23, 42, 0.04);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: #111827;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 8px;
  color: #fff;
  font-size: 14px;
}

.logo-text {
  font-size: 16px;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14px;
}

.main-nav a {
  position: relative;
  padding-bottom: 4px;
  color: #4b5563;
  transition: color 0.2s ease;
}

.main-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #2563eb, #22c55e);
  border-radius: 999px;
  transition: width 0.2s ease;
}

.main-nav a:hover {
  color: #111827;
}

.main-nav a:hover::after {
  width: 100%;
}

.nav-download {
  margin-left: 16px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: #fff;
  align-items: center;
  justify-content: center;
  padding: 0;
  cursor: pointer;
}

.nav-toggle span {
  width: 16px;
  height: 2px;
  border-radius: 999px;
  background: #111827;
}

/* 按钮样式 */
.btn-primary,
.btn-secondary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 8px 18px;
  border-radius: 999px;
  font-size: 14px;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: transform 0.15s ease, box-shadow 0.15s ease,
    background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #2563eb, #22c55e);
  color: #fff;
  box-shadow: 0 10px 25px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 14px 35px rgba(37, 99, 235, 0.35);
}

.btn-secondary {
  background: #eef2ff;
  color: #1d4ed8;
}

.btn-secondary:hover {
  background: #e0e7ff;
}

.btn-ghost {
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(255, 255, 255, 0.9);
  color: #374151;
}

.btn-ghost:hover {
  background: #f3f4f6;
}

/* Banner 区域 */
.banner {
  position: relative;
  padding: 72px 0 56px;
  overflow: hidden;
  background: radial-gradient(circle at 0 0, #eff6ff 0, #f5f7fb 50%, #ffffff 100%);
}

.banner::before,
.banner::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  filter: blur(0);
  opacity: 0.45;
  pointer-events: none;
}

/* 左上角动态色块 */
.banner::before {
  width: 260px;
  height: 260px;
  top: -120px;
  left: -60px;
  background: radial-gradient(circle at 30% 30%, #dbeafe, transparent 60%),
    radial-gradient(circle at 80% 20%, rgba(59, 130, 246, 0.4), transparent 65%);
  opacity: 0.6;
  animation: floatBlobLeft 14s ease-in-out infinite alternate;
}

/* 右下角水波纹渐变 */
.banner::after {
  width: 340px;
  height: 340px;
  right: -120px;
  bottom: -160px;
  background: radial-gradient(circle at 20% 10%, rgba(52, 211, 153, 0.45), transparent 60%),
    radial-gradient(circle at 80% 80%, rgba(37, 99, 235, 0.4), transparent 65%);
  opacity: 0.55;
  animation: floatBlobRight 18s ease-in-out infinite alternate;
}

@keyframes floatBlobLeft {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
    opacity: 0.45;
  }
  50% {
    transform: translate3d(18px, 10px, 0) scale(1.05);
    opacity: 0.7;
  }
  100% {
    transform: translate3d(10px, 24px, 0) scale(0.96);
    opacity: 0.4;
  }
}

@keyframes floatBlobRight {
  0% {
    transform: translate3d(0, 0, 0) scale(1);
    opacity: 0.5;
  }
  50% {
    transform: translate3d(-14px, -10px, 0) scale(1.06);
    opacity: 0.72;
  }
  100% {
    transform: translate3d(-26px, 4px, 0) scale(0.94);
    opacity: 0.45;
  }
}

.banner-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 40px;
  align-items: center;
}

.banner-title {
  font-size: 32px;
  line-height: 1.2;
  color: #111827;
  margin-bottom: 16px;
}

.banner-title-gradient {
  display: inline-block;
  background: linear-gradient(120deg, #2563eb, #22c55e);
  -webkit-background-clip: text;
  color: transparent;
  background-size: 200% 200%;
  animation: titleGradientShift 6s ease-in-out infinite;
}

@keyframes titleGradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.banner-subtitle {
  font-size: 14px;
  color: #4b5563;
  max-width: 460px;
  margin-bottom: 22px;
}

.banner-dynamic-line {
  font-size: 13px;
  color: #6b7280;
  margin-bottom: 14px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.banner-dynamic-text {
  display: inline-block;
  min-width: 120px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.07);
  color: #1d4ed8;
  font-weight: 500;
  position: relative;
  overflow: hidden;
}

.banner-dynamic-text::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.6), transparent);
  transform: translateX(-100%);
  opacity: 0;
}

.banner-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
}

.banner-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 12px;
  color: #6b7280;
}

.banner-tags span {
  padding: 3px 10px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.06);
}

.banner-components {
  margin-top: 24px;
  padding-top: 24px;
  border-top: 1px solid rgba(226, 232, 240, 0.6);
}

.banner-components-title {
  font-size: 14px;
  font-weight: 600;
  color: #111827;
  margin-bottom: 14px;
}

.banner-components-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.banner-component-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(226, 232, 240, 0.8);
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  cursor: default;
}

.banner-component-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(15, 23, 42, 0.08);
  border-color: rgba(129, 140, 248, 0.6);
}

.banner-component-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 600;
  color: #f9fafb;
  flex-shrink: 0;
}

.banner-component-info {
  flex: 1;
  min-width: 0;
}

.banner-component-info h4 {
  font-size: 13px;
  font-weight: 600;
  color: #111827;
  margin-bottom: 2px;
}

.banner-component-info p {
  font-size: 11px;
  color: #6b7280;
  line-height: 1.4;
}

.banner-visual {
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-start;
}

/* Banner 背景水波纹圈 */
.banner-visual::before {
  content: "";
  position: absolute;
  right: 6%;
  top: 24%;
  width: 260px;
  height: 260px;
  border-radius: 999px;
  background: radial-gradient(circle, rgba(15, 23, 42, 0.32) 0%, transparent 70%);
  opacity: 0.35;
  transform: translate3d(0, 0, 0);
  animation: ripplePulse 8s ease-in-out infinite;
  pointer-events: none;
  z-index: 0;
}

@keyframes ripplePulse {
  0% {
    transform: scale(0.92);
    opacity: 0.28;
  }
  50% {
    transform: scale(1.05);
    opacity: 0.45;
  }
  100% {
    transform: scale(1);
    opacity: 0.28;
  }
}
/* Banner 轮播整体卡片 */
.banner-panel {
  width: 100%;
  max-width: 460px;
  border-radius: 26px;
  background: linear-gradient(145deg, #1d4ed8, #22c55e);
  color: #eff6ff;
  box-shadow: 0 32px 60px rgba(15, 23, 42, 0.65);
  padding: 22px 22px 18px;
}

.banner-slider {
  border-radius: 22px;
  background: rgba(15, 23, 42, 0.18);
  backdrop-filter: blur(10px);
  padding: 20px 20px 16px;
  min-height: 230px;
}

.banner-slide {
  display: none;
  opacity: 0;
  transform: translateY(8px);
}

.banner-slide.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
  animation: bannerFadeIn 0.4s ease;
}

@keyframes bannerFadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.banner-slide-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  font-size: 12px;
}

.badge {
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}

.badge-word {
  background: rgba(59, 130, 246, 0.9);
}

.badge-excel {
  background: rgba(34, 197, 94, 0.9);
}

.badge-ppt {
  background: rgba(249, 115, 22, 0.9);
}

.badge-soft {
  background: rgba(15, 23, 42, 0.3);
  font-weight: 400;
}

.banner-slide h3 {
  font-size: 17px;
  margin-bottom: 8px;
}

.banner-slide p {
  font-size: 15px;
  color: #e5e7eb;
}

.banner-slide-footer {
  margin-top: 8px;
  font-size: 11px;
  color: #bfdbfe;
}

/* 轮播底部指示 */
.banner-slider-footer {
  margin-top: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 11px;
  color: #dbeafe;
}

.banner-indicators {
  display: flex;
  align-items: center;
  gap: 6px;
}

.banner-indicators .indicator {
  width: 7px;
  height: 7px;
  border-radius: 999px;
  border: none;
  padding: 0;
  cursor: pointer;
  background: rgba(15, 23, 42, 0.38);
  transition: transform 0.18s ease, background 0.18s ease, width 0.18s ease;
}

.banner-indicators .indicator.active {
  width: 18px;
  background: #facc15;
  transform: translateY(-1px);
}

/* 通用区块 */
.section {
  padding: 56px 0;
}

.section-light {
  background: #ffffff;
}

.section-accent {
  background: linear-gradient(135deg, #0f766e, #059669);
  color: #ecfdf5;
}

.section-header {
  text-align: center;
  margin-bottom: 28px;
}

.section-header h2 {
  font-size: 22px;
  margin-bottom: 6px;
}

.section-header p {
  font-size: 13px;
  color: #6b7280;
}

.section-accent .section-header p {
  color: #ccfbf1;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 20px;
}

/* 版本介绍 */
.version-grid {
  display: grid;
}

.version-card {
  padding: 18px 18px 20px;
  border-radius: 18px;
  background: #ffffff;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.06);
  border: 1px solid rgba(226, 232, 240, 0.9);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transform: translateY(0);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s;
}

.version-card.highlight {
  background: linear-gradient(145deg, #2563eb, #22c55e);
  color: #ecfdf5;
}

.version-card.highlight .version-tag {
  color: #d1fae5;
}

.version-card.highlight .version-extra span {
  color: #bbf7d0;
}

.version-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.1);
  border-color: rgba(165, 180, 252, 0.8);
}

.version-card h3 {
  font-size: 16px;
}

.version-apps {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 4px 0 8px;
}

.app-item {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: #4b5563;
}

.version-card.highlight .app-item {
  color: #e5e7eb;
}

/* 轻微强调组件图标，无序列动画，保持稳重 */
.version-card:hover .app-icon {
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(15, 23, 42, 0.25);
}

.app-icon {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  color: #f9fafb;
  background: #6b7280;
}

.app-name {
  min-width: 0;
}

.app-word {
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
}

.app-excel {
  background: linear-gradient(135deg, #16a34a, #15803d);
}

.app-ppt {
  background: linear-gradient(135deg, #f97316, #ea580c);
}

.app-outlook {
  background: linear-gradient(135deg, #0284c7, #0369a1);
}

.app-onenote {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.app-access {
  background: linear-gradient(135deg, #b91c1c, #991b1b);
}

.version-tag {
  font-size: 12px;
  color: #6b7280;
}

.version-features {
  font-size: 13px;
  color: #4b5563;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.version-features li::before {
  content: "•";
  margin-right: 4px;
  color: #22c55e;
}

.version-extra {
  font-size: 12px;
  color: #9ca3af;
}

.version-card .btn-secondary {
  align-self: flex-start;
}

/* 优势与评价滚动卡片 */
.platform-scroller {
  position: relative;
  overflow: hidden;
}

.platform-track {
  display: flex;
  align-items: stretch;
  gap: 18px;
}

.platform-card {
  padding: 18px 18px 20px;
  border-radius: 18px;
  background: radial-gradient(circle at 0 0, #eff6ff, #ffffff);
  border: 1px solid rgba(226, 232, 240, 0.9);
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
  position: relative;
  overflow: hidden;
  transform: translateY(0) translateZ(0);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  flex: 0 0 300px;
  max-width: 300px;
}

.platform-card::before {
  content: "";
  position: absolute;
  inset: -40%;
  background: conic-gradient(
    from 180deg,
    rgba(59, 130, 246, 0.18),
    rgba(16, 185, 129, 0.18),
    rgba(147, 51, 234, 0.18),
    rgba(59, 130, 246, 0.18)
  );
  opacity: 0;
  transform: rotate(0deg);
  transition: opacity 0.4s ease, transform 1.2s linear;
  pointer-events: none;
}

.platform-card::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: 17px;
  background: linear-gradient(135deg, #ffffff, #f9fafb);
  z-index: 0;
}

.platform-card > * {
  position: relative;
  z-index: 1;
}

.platform-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 22px 45px rgba(15, 23, 42, 0.16);
  border-color: rgba(129, 140, 248, 0.9);
}

.platform-card:hover::before {
  opacity: 1;
  transform: rotate(40deg);
}

.platform-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 11px;
}

.platform-tag {
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.12);
  color: #1d4ed8;
}

.platform-tag-green {
  background: rgba(16, 185, 129, 0.12);
  color: #047857;
}

.platform-tag-purple {
  background: rgba(147, 51, 234, 0.12);
  color: #6d28d9;
}

.platform-stars {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI";
  color: #f59e0b;
}

.platform-card h3 {
  font-size: 15px;
  margin-bottom: 6px;
}

.platform-text {
  font-size: 13px;
  color: #4b5563;
  margin-bottom: 8px;
}

.platform-list {
  font-size: 13px;
  color: #4b5563;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.platform-list li::before {
  content: "•";
  margin-right: 4px;
  color: #22c55e;
}

.platform-quotes li::before {
  content: "“";
  margin-right: 0;
  color: #9ca3af;
}

.platform-quotes li::after {
  content: "”";
}

/* 下载模块 */
.download-grid .download-card {
  background: rgba(15, 23, 42, 0.06);
  border-radius: 18px;
  padding: 18px 18px 20px;
  color: #ecfdf5;
  border: 1px solid rgba(45, 212, 191, 0.35);
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(8px);
}

.download-card h3 {
  font-size: 16px;
}

.download-desc {
  font-size: 13px;
  color: #d1fae5;
}

.download-meta {
  font-size: 13px;
  color: #a7f3d0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.download-card .btn-primary {
  align-self: flex-start;
  background: linear-gradient(135deg, #f97316, #facc15);
  color: #1f2937;
  box-shadow: 0 16px 35px rgba(248, 250, 252, 0.3);
}

/* 应用场景 */
.scenario-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  gap: 28px;
  align-items: stretch;
}

.scenario-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.scenario-card {
  padding: 14px 16px 16px;
  border-radius: 16px;
  background: #ffffff;
  border: 1px solid rgba(229, 231, 235, 0.85);
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.06);
  position: relative;
  overflow: hidden;
  cursor: default;
  transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s;
}

.scenario-card::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 0 0, rgba(59, 130, 246, 0.18), transparent 55%);
  opacity: 0;
  transition: opacity 0.18s ease;
  pointer-events: none;
}

.scenario-card:hover {
  transform: translateY(-3px);
  border-color: rgba(129, 140, 248, 0.85);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12);
}

.scenario-card:hover::after {
  opacity: 1;
}

.scenario-card h3 {
  font-size: 15px;
  margin-bottom: 4px;
}

.scenario-card p {
  font-size: 13px;
  color: #4b5563;
}

.scenario-tag {
  display: inline-flex;
  margin-top: 8px;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.06);
  color: #2563eb;
}

.scenario-preview {
  display: flex;
  align-items: center;
}

.preview-window {
  width: 100%;
  border-radius: 22px;
  background: #0f172a;
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.6);
  overflow: hidden;
}

.preview-toolbar {
  height: 32px;
  background: linear-gradient(90deg, #111827, #020617);
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0 12px;
}

.preview-toolbar span {
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.9);
}

.preview-toolbar span:nth-child(1) {
  background: #ef4444;
}

.preview-toolbar span:nth-child(2) {
  background: #f59e0b;
}

.preview-toolbar span:nth-child(3) {
  background: #22c55e;
}

.preview-content {
  padding: 18px 20px 20px;
  color: #e5e7eb;
}

.preview-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 12px;
  font-size: 11px;
  color: #9ca3af;
}

.preview-label {
  padding: 2px 8px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.7);
  color: #bfdbfe;
}

.preview-status {
  font-size: 11px;
  color: #a5b4fc;
}

.preview-body {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 14px;
  align-items: flex-start;
}

.preview-layout {
  background: radial-gradient(circle at 0 0, rgba(96, 165, 250, 0.25), transparent 60%);
  border-radius: 12px;
  padding: 10px 10px 12px;
  border: 1px solid rgba(30, 64, 175, 0.7);
  box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.4);
  position: relative;
  overflow: hidden;
  animation: layoutBreath 4s ease-in-out infinite;
}

.preview-layout::before {
  content: "";
  position: absolute;
  inset: -50%;
  background: radial-gradient(circle, var(--accent, #60a5fa), transparent 70%);
  opacity: 0.15;
  animation: gradientRotate 8s linear infinite;
  pointer-events: none;
}

.preview-layout::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(248, 250, 252, 0.2), transparent 55%);
  transform: translateX(-100%);
  opacity: 0;
}

.preview-layout-word {
  --accent: #60a5fa;
}

.preview-layout-excel {
  --accent: #4ade80;
}

.preview-layout-ppt {
  --accent: #fb923c;
}

.preview-layout-team {
  --accent: #a855f7;
}

.preview-line {
  height: 6px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.7);
  margin-bottom: 6px;
  position: relative;
  overflow: hidden;
  animation: linePulse 2.5s ease-in-out infinite;
}

.preview-line:nth-child(1) {
  animation-delay: 0s;
}

.preview-line:nth-child(2) {
  animation-delay: 0.4s;
}

.preview-line:nth-child(3) {
  animation-delay: 0.8s;
}

.preview-line:nth-child(4) {
  animation-delay: 1.2s;
}

.preview-line::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transform: translateX(-100%);
  animation: shimmer 3s ease-in-out infinite;
}

.preview-line.long {
  width: 90%;
  background: linear-gradient(90deg, var(--accent, #60a5fa), transparent);
  animation: lineGrow 2s ease-in-out infinite;
}

.preview-line.long::before {
  animation: shimmer 2.5s ease-in-out infinite;
  animation-delay: 0.3s;
}

@keyframes linePulse {
  0%, 100% {
    opacity: 0.7;
    transform: scaleX(1);
  }
  50% {
    opacity: 1;
    transform: scaleX(1.02);
  }
}

@keyframes lineGrow {
  0%, 100% {
    width: 90%;
    opacity: 0.85;
  }
  50% {
    width: 92%;
    opacity: 1;
  }
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(200%);
  }
}

.preview-info {
  font-size: 12px;
}

.preview-title {
  font-size: 13px;
  margin-bottom: 4px;
  color: #e5e7eb;
}

.preview-text {
  font-size: 12px;
  color: #9ca3af;
}

.preview-window.switching .preview-layout::after {
  opacity: 1;
  animation: sweepHighlight 0.6s ease-out;
}

@keyframes sweepHighlight {
  from {
    transform: translateX(-100%);
    opacity: 0.9;
  }
  to {
    transform: translateX(40%);
    opacity: 0;
  }
}

@keyframes layoutBreath {
  0%, 100% {
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.4), 0 0 20px rgba(96, 165, 250, 0.1);
  }
  50% {
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.4), 0 0 30px rgba(96, 165, 250, 0.2);
  }
}

@keyframes gradientRotate {
  0% {
    transform: rotate(0deg) translate(0, 0);
  }
  50% {
    transform: rotate(180deg) translate(10px, -10px);
  }
  100% {
    transform: rotate(360deg) translate(0, 0);
  }
}

/* FAQ */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.faq-item {
  border-radius: 14px;
  background: #f9fafb;
  border: 1px solid rgba(229, 231, 235, 0.9);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  padding: 10px 14px;
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 14px;
  cursor: pointer;
  color: #111827;
}

.faq-icon {
  width: 20px;
  height: 20px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.8);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  color: #4b5563;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  padding: 0 14px;
  transition: max-height 0.22s ease, padding-bottom 0.22s ease;
}

.faq-answer p {
  font-size: 13px;
  color: #4b5563;
  padding-bottom: 10px;
}

.faq-item.active .faq-answer {
  max-height: 200px;
  padding-bottom: 4px;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
  background: #2563eb;
  color: #eff6ff;
  border-color: transparent;
}

/* 页脚 */
.site-footer {
  padding: 18px 0 22px;
  background: #0f172a;
  color: #9ca3af;
  font-size: 12px;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.footer-links {
  margin-top: 4px;
  display: flex;
  gap: 10px;
}

.footer-links a {
  color: #d1d5db;
  font-size: 12px;
}

.footer-right {
  text-align: right;
}

/* 动态进入视口动画 */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

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

/* 响应式适配 */
@media (max-width: 960px) {
  .banner-inner {
    grid-template-columns: minmax(0, 1.1fr);
  }

  .banner-visual {
    order: -1;
    align-items: stretch;
  }

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

  .cards-grid,
  .platform-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .scenario-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .scenario-preview {
    order: -1;
  }
}

@media (max-width: 720px) {
  .nav-container {
    height: 56px;
  }

  .main-nav {
    position: absolute;
    inset: 56px 0 auto;
    background: rgba(255, 255, 255, 0.97);
    flex-direction: column;
    padding: 10px 16px 12px;
    border-bottom: 1px solid rgba(226, 232, 240, 0.9);
    transform-origin: top;
    transform: scaleY(0);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.16s ease, opacity 0.16s ease;
  }

  .main-nav.open {
    transform: scaleY(1);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-download {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
  }

  .banner {
    padding-top: 64px;
  }

  .banner-components {
    margin-top: 20px;
    padding-top: 20px;
  }

  .banner-components-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .banner-component-item {
    padding: 8px 10px;
  }

  .banner-component-icon {
    width: 32px;
    height: 32px;
    font-size: 14px;
  }

  .banner-component-info h4 {
    font-size: 12px;
  }

  .banner-component-info p {
    font-size: 10px;
  }

  .cards-grid,
  .platform-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .section {
    padding: 44px 0;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-right {
    text-align: left;
  }
}