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

:root {
  --color-text: #0f172a;
  --color-subtle: #475569;
  --color-muted: #64748b;
  --color-surface: rgba(255, 255, 255, 0.84);
  --color-border: rgba(203, 213, 225, 0.8);
  --color-primary: #2563eb;
  --color-primary-strong: #1d4ed8;
  --color-accent: #14b8a6;
  --shadow-soft: 0 16px 40px rgba(15, 23, 42, 0.08);
  --shadow-strong: 0 24px 60px rgba(15, 23, 42, 0.18);
}

html,
body {
  height: 100%;
  overflow-x: hidden;
}

header,
nav,
main,
section,
article,
footer,
aside {
  display: block;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Microsoft YaHei", sans-serif;
  color: var(--color-text);
  background:
    radial-gradient(circle at top left, rgba(219, 234, 254, 0.7), transparent 30%),
    linear-gradient(180deg, #f8fbff 0%, #eef4fb 46%, #f8fafc 100%);
  line-height: 1.6;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

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

ul {
  list-style: none;
}

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

.skip-link {
  position: absolute;
  left: 16px;
  top: -48px;
  z-index: 200;
  padding: 10px 14px;
  border-radius: 10px;
  background: #ffffff;
  color: var(--color-primary-strong);
  box-shadow: var(--shadow-soft);
  transition: top 0.2s ease;
}

.skip-link:focus-visible {
  top: 12px;
}

/* 顶部导航 */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.88);
  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;
  font-weight: 600;
  color: #111827;
  min-width: 0;
}

.logo > *:not(:last-child) {
  margin-right: 8px;
}

.partner-logo-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.partner-logo-mark {
  width: auto;
  height: 30px;
  max-width: 88px;
  object-fit: contain;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 6px;
  color: #fff;
  font-size: 14px;
}

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

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

.main-nav a:not(:last-child) {
  margin-right: 20px;
}

.main-nav a {
  position: relative;
  padding: 8px 0;
  color: #4b5563;
  transition: color 0.2s ease, opacity 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;
  width: 40px;
  height: 40px;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.6);
  background: #fff;
  align-items: center;
  justify-content: center;
  padding: 0;
  cursor: pointer;
}

.nav-toggle span:not(:last-child) {
  margin-bottom: 4px;
}

.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;
  min-height: 44px;
  padding: 10px 18px;
  border-radius: 16px;
  font-size: 14px;
  font-weight: 600;
  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;
}

a:focus-visible,
button:focus-visible,
.scenario-card:focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.24);
  outline-offset: 3px;
}

.main-nav a:focus-visible {
  border-radius: 8px;
}

.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.btn-ghost:focus-visible,
.faq-question:focus-visible,
.banner-indicators .indicator:focus-visible,
.nav-toggle:focus-visible,
.scenario-card:focus-visible {
  box-shadow: 0 0 0 4px rgba(191, 219, 254, 0.92);
}

/* Banner 区域 */
.banner {
  position: relative;
  padding: 84px 0 64px;
  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, 1.02fr) minmax(0, 0.98fr);
  grid-gap: 40px;
  align-items: center;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  margin-bottom: 14px;
  border-radius: 14px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary-strong);
  background: rgba(37, 99, 235, 0.08);
}

.banner-title {
  font-size: clamp(24px, 4vw, 40px);
  line-height: 1.12;
  color: #111827;
  margin-bottom: 16px;
  max-width: none;
  white-space: nowrap;
}

.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: 16px;
  color: var(--color-subtle);
  max-width: 520px;
  margin-bottom: 22px;
}

.banner-dynamic-line {
  font-size: 14px;
  color: var(--color-muted);
  margin-bottom: 18px;
  display: inline-flex;
  align-items: center;
}

.banner-dynamic-line > *:not(:last-child) {
  margin-right: 4px;
}

.banner-dynamic-text {
  display: inline-block;
  min-width: 120px;
  padding: 2px 8px;
  border-radius: 12px;
  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;
  flex-wrap: wrap;
  margin-bottom: 22px;
}

.banner-actions > *:not(:last-child) {
  margin-right: 12px;
}

.banner-components {
  margin-top: 20px;
  padding-top: 20px;
  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);
  grid-gap: 12px;
}

.banner-component-item {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: 10px;
  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 > *:not(:last-child) {
  margin-right: 10px;
}

.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: 6px;
  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;
  align-items: stretch;
}

.banner-visual > *:not(:last-child) {
  margin-bottom: 24px;
}

/* 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: none;
  border-radius: 20px;
  background: linear-gradient(145deg, #1d4ed8, #22c55e);
  color: #eff6ff;
  box-shadow: 0 32px 60px rgba(15, 23, 42, 0.5);
  padding: 24px 24px 20px;
}

.banner-slider {
  border-radius: 16px;
  background: rgba(15, 23, 42, 0.18);
  backdrop-filter: blur(10px);
  padding: 24px 22px 18px;
  min-height: 340px;
}

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

.banner-slide.active {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  opacity: 1;
  transform: translateY(0);
  animation: bannerFadeIn 0.4s ease;
}

.banner-slider.use-jq-slider .banner-slide.active {
  display: block;
  opacity: 1;
  transform: none;
  animation: none;
}

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

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

.banner-slide-header > *:not(:last-child) {
  margin-right: 10px;
}

.badge {
  padding: 2px 8px;
  border-radius: 10px;
  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: 20px;
  line-height: 1.35;
  margin-bottom: 10px;
}

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

.banner-slide-points {
  margin-top: 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.banner-slide-points li {
  position: relative;
  padding-left: 18px;
  font-size: 13px;
  line-height: 1.5;
  color: #dbeafe;
}

.banner-slide-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 3px;
  background: rgba(250, 204, 21, 0.9);
  box-shadow: 0 0 0 4px rgba(250, 204, 21, 0.12);
}

.banner-slide-footer {
  margin-top: auto;
  padding-top: 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 11px;
  color: #bfdbfe;
  border-top: 1px solid rgba(191, 219, 254, 0.18);
}

.banner-slide-mini {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.banner-slide-mini span {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.28);
  color: #eff6ff;
}

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

.banner-slider-footer > *:not(:last-child) {
  margin-right: 12px;
}

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

.banner-indicators .indicator:not(:last-child) {
  margin-right: 6px;
}

.banner-indicators .indicator {
  width: 12px;
  height: 12px;
  border-radius: 6px;
  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,
    box-shadow 0.18s ease;
}

.banner-indicators .indicator.active {
  width: 28px;
  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: 32px;
}

.section-header h2 {
  font-size: 30px;
  line-height: 1.2;
  margin-bottom: 10px;
}

.section-header p {
  font-size: 15px;
  color: #6b7280;
  max-width: 720px;
  margin: 0 auto;
}

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

.section-accent .section-kicker {
  color: #ecfdf5;
  background: rgba(255, 255, 255, 0.12);
}

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

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

.version-card {
  min-height: 472px;
  padding: 28px 26px 30px;
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 16px 34px rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(226, 232, 240, 0.9);
  display: flex;
  flex-direction: column;
  transform: translateY(0);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s;
}

.version-card > *:not(:last-child) {
  margin-bottom: 18px;
}

.version-card.highlight {
  background:
    linear-gradient(145deg, rgba(37, 99, 235, 0.94), rgba(34, 197, 94, 0.92)),
    linear-gradient(145deg, #2563eb, #22c55e);
  color: #ecfdf5;
  box-shadow: 0 28px 60px rgba(29, 78, 216, 0.28);
  border-color: rgba(255, 255, 255, 0.18);
}

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

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

.version-card.highlight .version-fit,
.version-card.highlight .version-features,
.version-card.highlight .app-item {
  color: rgba(239, 246, 255, 0.92);
}

.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: 28px;
  line-height: 1.25;
}

.version-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.version-badge {
  display: inline-flex;
  align-items: center;
  padding: 5px 10px;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
}

.version-badge-muted {
  background: rgba(37, 99, 235, 0.08);
  color: var(--color-primary-strong);
}

.version-fit {
  font-size: 13px;
  color: var(--color-muted);
}

.version-apps {
  display: flex;
  flex-wrap: wrap;
  margin: 8px 0 12px;
  margin-left: -4px;
  margin-top: -4px;
}

.version-apps .app-item {
  margin-left: 4px;
  margin-top: 4px;
}

.app-item {
  display: inline-flex;
  align-items: center;
  font-size: 12px;
  color: #4b5563;
}

.app-item > *:not(:last-child) {
  margin-right: 4px;
}

.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: 5px;
  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: 13px;
  color: #6b7280;
  line-height: 1.6;
}

.version-features {
  font-size: 14px;
  color: #334155;
  display: flex;
  flex-direction: column;
  line-height: 1.75;
}

.version-features li:not(:last-child) {
  margin-bottom: 8px;
}

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

.version-extra {
  font-size: 13px;
  color: #9ca3af;
  line-height: 1.6;
}

.version-card .btn-secondary {
  align-self: stretch;
  justify-content: center;
  min-height: 50px;
  margin-top: auto;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: #ffffff;
  background: linear-gradient(135deg, #2563eb, #0f7ae5 55%, #14b8a6);
  border: 1px solid rgba(37, 99, 235, 0.2);
  box-shadow: 0 14px 28px rgba(37, 99, 235, 0.22);
}

.version-card .btn-secondary:hover {
  background: linear-gradient(135deg, #1d4ed8, #0369a1 55%, #0f766e);
  box-shadow: 0 18px 34px rgba(29, 78, 216, 0.28);
}

.version-card.highlight .btn-secondary {
  color: #0f172a;
  background: linear-gradient(135deg, #ffffff, #dbeafe);
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow: 0 16px 30px rgba(15, 23, 42, 0.18);
}

.version-card.highlight .btn-secondary:hover {
  background: linear-gradient(135deg, #ffffff, #bfdbfe);
  box-shadow: 0 20px 34px rgba(15, 23, 42, 0.22);
}

.version-callout {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 22px;
  padding: 18px 20px;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.06), rgba(20, 184, 166, 0.08));
  border: 1px solid rgba(148, 163, 184, 0.2);
}

.version-callout-copy {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.version-callout-copy strong {
  font-size: 16px;
}

.version-callout-copy span {
  font-size: 14px;
  color: var(--color-subtle);
}

/* 优势与评价滚动卡片 */
.platform-scroller {
  position: relative;
  margin-inline: calc(50% - 50vw);
  overflow: hidden;
  padding-bottom: 4px;
}

.platform-marquee {
  display: flex;
  align-items: stretch;
  width: max-content;
  animation: platformMarquee 34s linear infinite;
  will-change: transform;
}

.platform-scroller:hover .platform-marquee {
  animation-play-state: paused;
}

.platform-scroller.use-jq-scroll .platform-marquee,
.platform-scroller.use-jq-scroll:hover .platform-marquee {
  animation: none;
  transform: none;
}

.platform-scroller.use-jq-scroll .platform-track.is-duplicate {
  display: flex;
}

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

.platform-card {
  padding: 22px 22px 24px;
  border-radius: 16px;
  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;
  scroll-snap-align: start;
}

.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: 15px;
  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);
}

@keyframes platformMarquee {
  from {
    transform: translate3d(0, 0, 0);
  }
  to {
    transform: translate3d(-50%, 0, 0);
  }
}

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

.platform-card-header > *:not(:last-child) {
  margin-right: 8px;
}

.platform-tag {
  padding: 2px 8px;
  border-radius: 10px;
  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: 18px;
  margin-bottom: 8px;
}

.platform-text {
  font-size: 14px;
  color: #4b5563;
  margin-bottom: 10px;
}

.platform-list {
  font-size: 14px;
  color: #4b5563;
  display: flex;
  flex-direction: column;
}

.platform-list li:not(:last-child) {
  margin-bottom: 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: 16px;
  padding: 22px 22px 24px;
  color: #ecfdf5;
  border: 1px solid rgba(45, 212, 191, 0.35);
  display: flex;
  flex-direction: column;
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.45);
  backdrop-filter: blur(8px);
}

.download-grid .download-card > *:not(:last-child) {
  margin-bottom: 12px;
}

.download-card h3 {
  font-size: 20px;
}

.download-desc {
  font-size: 14px;
  color: #d1fae5;
}

.download-meta {
  font-size: 14px;
  color: #a7f3d0;
  display: flex;
  flex-direction: column;
}

.download-meta li:not(:last-child) {
  margin-bottom: 4px;
}

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

.download-card .btn-ghost {
  align-self: flex-start;
  color: #ecfeff;
  border-color: rgba(167, 243, 208, 0.38);
  background: rgba(255, 255, 255, 0.08);
}

.download-card .btn-ghost:hover {
  background: rgba(255, 255, 255, 0.16);
}

.download-trust-bar {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 22px;
}

.download-trust-item {
  padding: 16px 18px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(204, 251, 241, 0.2);
}

.download-trust-item strong {
  display: block;
  margin-bottom: 6px;
  font-size: 15px;
  color: #f0fdfa;
}

.download-trust-item span {
  display: block;
  font-size: 13px;
  line-height: 1.5;
  color: #ccfbf1;
}

.step-badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 10px;
  background: rgba(236, 253, 245, 0.12);
  color: #a7f3d0;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

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

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

.scenario-list > *:not(:last-child) {
  margin-bottom: 14px;
}

.scenario-card {
  padding: 18px 18px 18px;
  border-radius: 14px;
  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: pointer;
  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: 18px;
  margin-bottom: 6px;
}

.scenario-card p {
  font-size: 14px;
  color: #4b5563;
}

.scenario-tag {
  display: inline-flex;
  margin-top: 8px;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 10px;
  background: rgba(37, 99, 235, 0.06);
  color: #2563eb;
}

.scenario-card.active {
  border-color: rgba(37, 99, 235, 0.65);
  background: linear-gradient(135deg, rgba(239, 246, 255, 0.98), rgba(248, 250, 252, 1));
  box-shadow: 0 22px 45px rgba(37, 99, 235, 0.12);
}

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

.scenario-card.active .scenario-tag {
  background: linear-gradient(135deg, rgba(37, 99, 235, 0.12), rgba(20, 184, 166, 0.14));
  color: var(--color-primary-strong);
}

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

.preview-window {
  width: 100%;
  min-height: 468px;
  border-radius: 16px;
  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;
  padding: 0 12px;
}

.preview-toolbar span:not(:last-child) {
  margin-right: 6px;
}

.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: 20px 22px 24px;
  color: #e5e7eb;
}

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

.preview-header > *:not(:last-child) {
  margin-right: 8px;
}

.preview-label {
  padding: 2px 8px;
  border-radius: 10px;
  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);
  grid-gap: 18px;
  align-items: stretch;
}

.preview-layout {
  background: radial-gradient(circle at 0 0, rgba(96, 165, 250, 0.25), transparent 60%);
  border-radius: 10px;
  min-height: 320px;
  padding: 14px 14px 16px;
  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;
}

.preview-layout-heading {
  width: 62%;
  height: 12px;
  margin-bottom: 12px;
  border-radius: 6px;
  background: linear-gradient(90deg, rgba(255, 255, 255, 0.26), rgba(255, 255, 255, 0.06));
}

.preview-layout-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-top: 14px;
  margin-bottom: 14px;
}

.preview-layout-cards span {
  height: 46px;
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.46);
  border: 1px solid rgba(148, 163, 184, 0.14);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.preview-layout-table {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.preview-table-row {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.9fr;
  gap: 8px;
}

.preview-table-row span {
  height: 10px;
  border-radius: 6px;
  background: rgba(148, 163, 184, 0.28);
}

@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: 13px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 14px;
}

.preview-title {
  font-size: 18px;
  margin-bottom: 8px;
  color: #e5e7eb;
}

.preview-text {
  font-size: 14px;
  color: #9ca3af;
  line-height: 1.75;
}

.preview-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.preview-chip {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 10px;
  font-size: 12px;
  color: #e0f2fe;
  background: rgba(37, 99, 235, 0.18);
  border: 1px solid rgba(96, 165, 250, 0.2);
}

.preview-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.preview-metric {
  padding: 12px 12px 14px;
  border-radius: 12px;
  background: rgba(15, 23, 42, 0.38);
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.preview-metric-label {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: 0.04em;
  color: #94a3b8;
}

.preview-metric-value {
  display: block;
  font-size: 14px;
  line-height: 1.5;
  color: #f8fafc;
}

.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;
}

.faq-list > *:not(:last-child) {
  margin-bottom: 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: 16px 18px;
  background: transparent;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  color: #111827;
}

.faq-icon {
  width: 20px;
  height: 20px;
  border-radius: 10px;
  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 18px;
  transition: max-height 0.22s ease, padding-bottom 0.22s ease;
}

.faq-answer p {
  font-size: 14px;
  color: #4b5563;
  padding-bottom: 14px;
}

.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: 32px 0 36px;
  background:
    linear-gradient(135deg, #0f172a 0%, #111827 55%, #172554 100%);
  color: #cbd5e1;
  font-size: 13px;
}

.footer-inner {
  display: grid;
  gap: 18px;
  justify-items: center;
}

.footer-top {
  display: grid;
  gap: 10px;
  padding: 0 0 18px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
  justify-items: center;
  text-align: center;
}

.footer-brand {
  max-width: none;
}

.footer-company {
  font-size: 20px;
  font-weight: 700;
  color: #f8fafc;
  line-height: 1.4;
}

.footer-record {
  color: #cbd5e1;
  font-size: 14px;
  line-height: 1.7;
}

.footer-meta {
  display: grid;
  gap: 12px;
  width: min(100%, 920px);
}

.footer-meta-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-items: start;
  justify-items: center;
  gap: 0;
  min-width: 0;
  padding: 16px 18px;
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.28);
  text-align: center;
}

.footer-value {
  color: #e2e8f0;
  line-height: 1.7;
  word-break: break-word;
}

.footer-contact-line {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 10px;
}

.footer-contact-separator {
  color: rgba(148, 163, 184, 0.8);
}

.footer-meta a {
  color: #f8fafc;
  font-weight: 600;
}

/* 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);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* 响应式适配 */
@media (max-width: 960px) {
  .download-trust-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .version-callout {
    flex-direction: column;
    align-items: flex-start;
  }

  .banner-inner {
    grid-template-columns: minmax(0, 1.1fr);
  }

  .platform-scroller {
    overflow-x: auto;
    scrollbar-width: thin;
    scroll-snap-type: x proximity;
  }

  .platform-scroller.use-jq-scroll {
    overflow: hidden;
    scroll-snap-type: none;
  }

  .platform-marquee {
    animation: none;
  }

  .platform-track.is-duplicate {
    display: none;
  }

  .platform-scroller.use-jq-scroll .platform-track.is-duplicate {
    display: flex;
  }

  .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: 72px;
  }

  .banner-title {
    font-size: clamp(20px, 5.4vw, 28px);
  }

  .banner-slider {
    min-height: 312px;
  }

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

  .banner-subtitle {
    font-size: 15px;
  }

  .download-trust-bar {
    grid-template-columns: minmax(0, 1fr);
  }

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

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

  .section-header h2 {
    font-size: 26px;
  }

  .section-header p {
    font-size: 14px;
  }

  .version-card h3 {
    font-size: 24px;
  }

  .preview-window {
    min-height: 420px;
  }

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

  .preview-layout {
    min-height: 220px;
  }

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

  .scenario-card,
  .version-card,
  .platform-card,
  .download-grid .download-card {
    padding: 18px;
  }

  .version-card {
    min-height: auto;
  }

  .faq-question {
    font-size: 15px;
  }

  .footer-inner {
    gap: 18px;
  }

  .footer-brand {
    max-width: none;
  }

  .footer-meta {
    gap: 10px;
  }

  .footer-meta-item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
  }
}

/* 中等高分辨率屏幕适配 */
@media (min-width: 1440px) and (max-width: 1919px) {
  html {
    font-size: 1.1em;
  }

  .container {
    max-width: 1280px;
    padding: 0 20px;
  }

  .banner-title {
    font-size: 36px;
  }

  .banner-subtitle {
    font-size: 16px;
  }

  .section-header h2 {
    font-size: 26px;
  }

  .section-header p {
    font-size: 15px;
  }

  .banner {
    padding: 80px 0 60px;
  }

  .section {
    padding: 60px 0;
  }

  .banner-inner {
    grid-gap: 45px;
  }

  .cards-grid {
    grid-gap: 24px;
  }

  .scenario-layout {
    grid-gap: 32px;
  }
}

/* 高分辨率屏幕适配 - 放大所有元素 */
@media (min-width: 1920px) {
  html {
    font-size: 1.2em;
  }

  .container {
    max-width: 1400px;
    padding: 0 24px;
  }

  .banner-title {
    font-size: 40px;
  }

  .banner-subtitle {
    font-size: 18px;
  }

  .section-header h2 {
    font-size: 28px;
  }

  .section-header p {
    font-size: 16px;
  }

  .version-card h3 {
    font-size: 24px;
  }

  .platform-card h3 {
    font-size: 18px;
  }

  .scenario-card h3 {
    font-size: 18px;
  }

  .download-card h3 {
    font-size: 20px;
  }

  .btn-primary,
  .btn-secondary,
  .btn-ghost {
    padding: 12px 24px;
    font-size: 16px;
  }

  .nav-container {
    height: 72px;
  }

  .logo-text {
    font-size: 18px;
  }

  .main-nav {
    font-size: 16px;
  }

  .banner {
    padding: 90px 0 70px;
  }

  .section {
    padding: 70px 0;
  }

  .banner-components-grid {
    grid-gap: 16px;
  }

  .cards-grid {
    grid-gap: 28px;
  }

  .scenario-layout {
    grid-gap: 36px;
  }

  .banner-inner {
    grid-gap: 50px;
  }

  .banner-component-item {
    padding: 14px 16px;
  }

  .banner-component-icon {
    width: 42px;
    height: 42px;
    font-size: 18px;
  }

  .banner-component-info h4 {
    font-size: 16px;
  }

  .banner-component-info p {
    font-size: 14px;
  }

  .version-card {
    padding: 24px 24px 28px;
  }

  .platform-card {
    padding: 24px 24px 28px;
  }

  .download-card {
    padding: 24px 24px 28px;
  }

  .scenario-card {
    padding: 18px 20px 20px;
  }
}

/* 超高分辨率屏幕适配 - 进一步放大 */
@media (min-width: 2560px) {
  html {
    font-size: 1.35em;
  }

  .container {
    max-width: 1600px;
    padding: 0 32px;
  }

  .banner-title {
    font-size: 48px;
  }

  .banner-subtitle {
    font-size: 20px;
  }

  .section-header h2 {
    font-size: 32px;
  }

  .section-header p {
    font-size: 18px;
  }

  .banner {
    padding: 110px 0 85px;
  }

  .section {
    padding: 85px 0;
  }
}