:root {
  --bg: #f3f7ff;
  --bg-deep: #e8eefb;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-solid: #ffffff;
  --surface-dark: #0f1b3d;
  --line: #d8e2f1;
  --text: #12203d;
  --muted: #5f6d86;
  --primary: #2269f5;
  --primary-strong: #1646c8;
  --accent: #ff7c55;
  --success: #1fa971;
  --shadow: 0 22px 60px rgba(24, 45, 96, 0.12);
  --shadow-strong: 0 28px 70px rgba(16, 29, 64, 0.26);
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 18px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(34, 105, 245, 0.12), transparent 34%),
    radial-gradient(circle at top right, rgba(255, 124, 85, 0.12), transparent 30%),
    linear-gradient(180deg, #f7faff 0%, var(--bg) 52%, #edf3ff 100%);
  line-height: 1.65;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background-image: linear-gradient(rgba(255, 255, 255, 0.24) 1px, transparent 1px), linear-gradient(90deg, rgba(255, 255, 255, 0.24) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.26;
  pointer-events: none;
  z-index: -1;
}

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

button {
  border: 0;
  background: none;
  font: inherit;
  color: inherit;
  padding: 0;
}

svg {
  flex-shrink: 0;
}

.container {
  width: min(1160px, calc(100% - 32px));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 30;
  padding-top: 18px;
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(18px);
  border: 1px solid rgba(216, 226, 241, 0.9);
  box-shadow: var(--shadow);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.02rem;
  font-weight: 700;
  letter-spacing: 0.01em;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 14px 28px rgba(34, 105, 245, 0.3);
  color: #fff;
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  flex-wrap: wrap;
}

.nav-link {
  padding: 10px 16px;
  border-radius: 999px;
  color: var(--muted);
  font-weight: 600;
  transition: background 0.22s ease, color 0.22s ease, transform 0.22s ease;
}

.nav-link:hover {
  background: rgba(34, 105, 245, 0.08);
  color: var(--text);
  transform: translateY(-1px);
}

.nav-link.active {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  box-shadow: 0 12px 24px rgba(34, 105, 245, 0.24);
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: 16px;
  background: var(--surface-dark);
  color: #fff;
  font-weight: 700;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 28px rgba(15, 27, 61, 0.26);
}

main {
  padding: 26px 0 72px;
}

.section {
  padding: 44px 0;
}

.section-soft {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.32), rgba(255, 255, 255, 0.46));
  border-top: 1px solid rgba(216, 226, 241, 0.75);
  border-bottom: 1px solid rgba(216, 226, 241, 0.75);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  border: 1px solid rgba(216, 226, 241, 0.9);
  color: var(--primary-strong);
  font-weight: 700;
  font-size: 0.95rem;
}

.hero-grid,
.download-hero,
.feature-layout,
.dual-grid,
.article-shell {
  display: grid;
  gap: 20px;
}

.hero-grid {
  grid-template-columns: 1.14fr 0.86fr;
  align-items: stretch;
}

.download-hero {
  grid-template-columns: 1.06fr 0.94fr;
  align-items: stretch;
}

.feature-layout {
  grid-template-columns: 1.08fr 0.92fr;
}

.dual-grid {
  grid-template-columns: 0.94fr 1.06fr;
}

.article-shell {
  grid-template-columns: 1.06fr 0.7fr;
  align-items: start;
}

.hero-copy,
.article-intro {
  padding: 24px 0;
}

.hero-copy h1,
.article-intro h1,
.focus-card h1 {
  margin: 18px 0 16px;
  font-size: clamp(2.3rem, 4.2vw, 4.4rem);
  line-height: 1.08;
  letter-spacing: -0.035em;
}

.lead {
  margin: 0;
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 720px;
}

.hero-actions,
.focus-actions,
.platform-actions,
.cta-actions,
.inline-actions {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-actions,
.focus-actions,
.inline-actions {
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 14px 22px;
  border-radius: 16px;
  font-weight: 700;
  transition: transform 0.22s ease, box-shadow 0.22s ease, background 0.22s ease;
}

.button:hover {
  transform: translateY(-2px);
}

.button:disabled,
button:disabled {
  cursor: not-allowed;
  opacity: 0.86;
}

.button-primary {
  color: #fff;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  box-shadow: 0 18px 34px rgba(34, 105, 245, 0.28);
}

.button-primary:hover {
  box-shadow: 0 22px 40px rgba(34, 105, 245, 0.32);
}

.button-secondary {
  color: var(--text);
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(216, 226, 241, 0.95);
}

.button-tertiary {
  color: #fff;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.button-light {
  color: var(--primary-strong);
  background: #fff;
}

.button-block {
  width: 100%;
}

.trust-row,
.keyword-strip,
.metric-strip,
.focus-points,
.stat-grid,
.system-grid,
.workflow-grid,
.platform-grid,
.quote-grid,
.compare-grid,
.tips-grid,
.benefit-grid,
.card-stack,
.info-list {
  display: grid;
  gap: 16px;
}

.trust-row {
  margin-top: 24px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.trust-pill {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(216, 226, 241, 0.95);
  color: var(--muted);
  font-weight: 600;
}

.dashboard-card,
.feature-card,
.platform-card,
.quote-card,
.info-card,
.article-card,
.table-card,
.cta-band,
.safety-banner,
.focus-card,
.stat-card,
.timeline-item,
.keyword-card,
.compare-card,
.tip-card,
.benefit-card {
  border-radius: var(--radius-xl);
}

.dashboard-card,
.feature-card,
.platform-card,
.quote-card,
.info-card,
.article-card,
.table-card,
.stat-card,
.timeline-item,
.keyword-card,
.compare-card,
.tip-card,
.benefit-card {
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.82);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}

.dashboard-card,
.feature-card,
.platform-card,
.quote-card,
.info-card,
.article-card,
.table-card,
.stat-card,
.timeline-item,
.keyword-card,
.compare-card,
.tip-card,
.benefit-card {
  padding: 26px;
}

.dashboard-card {
  background: linear-gradient(180deg, #14244e 0%, #0f1b3d 100%);
  color: #fff;
  box-shadow: var(--shadow-strong);
}

.window-top {
  display: flex;
  gap: 8px;
  margin-bottom: 18px;
}

.window-dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.3);
}

.workspace-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.workspace-card {
  padding: 18px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.workspace-card h3,
.feature-card h3,
.platform-card h3,
.quote-card h3,
.info-card h3,
.article-card h2,
.table-card h2,
.focus-card h2,
.compare-card h3,
.tip-card h3,
.benefit-card h3 {
  margin: 14px 0 10px;
}

.workspace-card p,
.feature-card p,
.platform-card p,
.quote-card p,
.info-card p,
.article-card p,
.tip-card p,
.benefit-card p {
  margin: 0;
}

.workspace-card p,
.focus-card p,
.quote-card p {
  color: rgba(255, 255, 255, 0.76);
}

.feature-card p,
.platform-card p,
.info-card p,
.article-card p,
.tip-card p,
.benefit-card p,
.quote-card span,
.muted,
.meta-line,
.stat-note {
  color: var(--muted);
}

.stat-grid {
  margin-top: 18px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stat-box {
  padding: 16px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

.stat-box strong,
.stat-card strong,
.metric-value {
  display: block;
  font-size: 1.45rem;
  line-height: 1.15;
}

.section-head {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.section-head h2,
.article-card h2,
.table-card h2 {
  margin: 0;
  font-size: clamp(1.7rem, 2.6vw, 2.55rem);
  line-height: 1.2;
}

.section-head p {
  margin: 0;
  color: var(--muted);
  max-width: 650px;
}

.card-stack {
  grid-template-columns: 1fr;
}

.icon-chip,
.summary-icon,
.step-index,
.timeline-index,
.platform-mark,
.side-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.icon-chip,
.platform-mark {
  width: 56px;
  height: 56px;
  border-radius: 18px;
}

.metric-strip {
  margin-top: 20px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.keyword-strip {
  margin-top: 24px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.keyword-card {
  padding: 20px;
}

.keyword-card strong {
  display: block;
  margin-bottom: 8px;
  font-size: 1.08rem;
}

.inline-list,
.clean-list,
.faq-list,
.timeline,
.anchor-list {
  display: grid;
  gap: 14px;
}

.inline-list,
.clean-list {
  padding: 0;
  list-style: none;
  margin: 20px 0 0;
}

.inline-list li,
.clean-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.clean-list strong,
.inline-list strong,
.meta-list strong,
.compare-card strong,
.tip-card strong,
.benefit-card strong {
  display: block;
  margin-bottom: 4px;
}

.workflow-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.step-card {
  padding: 24px;
  border-radius: 28px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(241, 246, 255, 0.84));
  border: 1px solid rgba(216, 226, 241, 0.92);
  box-shadow: var(--shadow);
}

.step-index,
.timeline-index {
  width: 42px;
  height: 42px;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #fff;
  font-weight: 800;
  box-shadow: 0 12px 20px rgba(34, 105, 245, 0.2);
}

.step-card h3,
.timeline-item h3 {
  margin: 16px 0 10px;
}

.step-card p,
.timeline-item p {
  margin: 0;
  color: var(--muted);
}

.platform-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.platform-card.recommended {
  background: linear-gradient(180deg, rgba(34, 105, 245, 0.12), rgba(255, 255, 255, 0.96));
}

.platform-top {
  display: flex;
  align-items: center;
  gap: 14px;
}

.platform-meta,
.meta-list {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.platform-actions {
  margin-top: 20px;
}

.quote-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.quote-card {
  background: linear-gradient(180deg, rgba(15, 27, 61, 0.96), rgba(27, 53, 118, 0.96));
  color: #fff;
  box-shadow: var(--shadow-strong);
}

.quote-card strong {
  display: block;
  margin-top: 18px;
}

.quote-card span {
  display: block;
  margin-top: 4px;
  color: rgba(255, 255, 255, 0.7);
}

.faq-list {
  margin-top: 10px;
}

.faq-item {
  border-radius: 24px;
  background: rgba(255, 255, 255, 0.84);
  border: 1px solid rgba(216, 226, 241, 0.92);
  box-shadow: var(--shadow);
  padding: 0 22px;
}

.faq-item[open] {
  background: #fff;
}

.faq-item summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item p {
  margin: 0 0 20px;
  color: var(--muted);
}

.summary-icon {
  width: 36px;
  height: 36px;
  border-radius: 13px;
  background: rgba(34, 105, 245, 0.08);
  color: var(--primary-strong);
}

.focus-card {
  padding: 30px;
  color: #fff;
  background: linear-gradient(155deg, #12204a 0%, #184bc6 74%, #4292ff 100%);
  box-shadow: var(--shadow-strong);
}

.badge-tone {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 999px;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.18);
}

.focus-top,
.side-row,
.cta-band,
.safety-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  flex-wrap: wrap;
}

.focus-points {
  margin-top: 22px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.focus-point {
  padding: 18px;
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.focus-point strong,
.info-card strong,
.article-card strong,
.safety-banner strong {
  display: block;
  margin-bottom: 6px;
}

.side-stack {
  display: grid;
  gap: 18px;
}

.info-card h3,
.article-card h2,
.table-card h2 {
  margin-top: 0;
}

.system-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stat-card {
  padding: 22px;
}

.timeline-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px;
  align-items: start;
}

.table-card {
  overflow: hidden;
}

.table-wrap {
  overflow-x: auto;
}

.version-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 8px;
}

.version-table th,
.version-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.version-table th {
  color: var(--muted);
  font-weight: 700;
  font-size: 0.92rem;
}

.version-table tr:last-child td {
  border-bottom: 0;
}

.safety-banner {
  padding: 28px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.98), rgba(235, 243, 255, 0.92));
  border: 1px solid rgba(216, 226, 241, 0.96);
  box-shadow: var(--shadow);
}

.benefit-grid,
.compare-grid,
.tips-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.compare-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.side-note {
  position: sticky;
  top: 104px;
  display: grid;
  gap: 18px;
}

.anchor-list a {
  display: block;
  padding: 12px 14px;
  border-radius: 14px;
  font-weight: 600;
  background: rgba(34, 105, 245, 0.06);
  color: var(--text);
  transition: background 0.22s ease, transform 0.22s ease;
}

.anchor-list a:hover {
  background: rgba(34, 105, 245, 0.12);
  transform: translateX(4px);
}

.cta-band {
  padding: 32px;
  margin-top: 12px;
  color: #fff;
  background: linear-gradient(135deg, #0f1b3d 0%, #173d95 100%);
  box-shadow: var(--shadow-strong);
}

.cta-band h2,
.cta-band p {
  margin: 0;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.76);
  max-width: 650px;
}

footer {
  padding-bottom: 44px;
}

.footer-card {
  padding: 24px 28px;
  text-align: center;
  color: rgba(255, 255, 255, 0.84);
  background: rgba(15, 27, 61, 0.96);
  border-radius: 28px;
  box-shadow: var(--shadow-strong);
}

.footer-card p {
  margin: 8px 0;
}

.page-article .article-card,
.page-article .table-card,
.page-article .info-card,
.page-article .keyword-card,
.page-article .compare-card,
.page-article .tip-card,
.page-article .benefit-card {
  background: rgba(255, 255, 255, 0.9);
}

.page-article .article-card p + p {
  margin-top: 14px;
}

.page-download .info-card p + p,
.page-home .feature-card p + p {
  margin-top: 12px;
}

.page-home .section:first-of-type,
.page-download .section:first-of-type,
.page-article .section:first-of-type {
  padding-top: 18px;
}

@media (max-width: 1080px) {
  .hero-grid,
  .download-hero,
  .feature-layout,
  .dual-grid,
  .article-shell {
    grid-template-columns: 1fr;
  }

  .platform-grid,
  .system-grid,
  .workflow-grid,
  .quote-grid,
  .compare-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .trust-row,
  .keyword-strip,
  .metric-strip,
  .benefit-grid,
  .tips-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .side-note {
    position: static;
  }
}

@media (max-width: 720px) {
  .container {
    width: min(100%, calc(100% - 24px));
  }

  .site-header {
    padding-top: 12px;
  }

  .site-nav {
    flex-wrap: wrap;
    border-radius: 20px;
  }

  .nav-menu {
    order: 3;
    width: 100%;
    justify-content: space-between;
  }

  .nav-link {
    flex: 1 1 calc(33.33% - 8px);
    text-align: center;
  }

  .nav-cta {
    width: 100%;
  }

  main {
    padding: 18px 0 52px;
  }

  .section {
    padding: 32px 0;
  }

  .hero-copy h1,
  .article-intro h1,
  .focus-card h1 {
    font-size: 2.35rem;
  }

  .dashboard-card,
  .feature-card,
  .platform-card,
  .quote-card,
  .info-card,
  .article-card,
  .table-card,
  .stat-card,
  .timeline-item,
  .keyword-card,
  .compare-card,
  .tip-card,
  .benefit-card,
  .focus-card,
  .cta-band,
  .safety-banner,
  .footer-card {
    padding: 22px;
    border-radius: 24px;
  }

  .workspace-grid,
  .platform-grid,
  .system-grid,
  .workflow-grid,
  .quote-grid,
  .focus-points,
  .trust-row,
  .keyword-strip,
  .metric-strip,
  .benefit-grid,
  .compare-grid,
  .tips-grid,
  .stat-grid {
    grid-template-columns: 1fr;
  }

  .button,
  .hero-actions a,
  .hero-actions button,
  .focus-actions a,
  .focus-actions button,
  .cta-actions a,
  .cta-actions button {
    width: 100%;
  }

  .cta-band,
  .safety-banner,
  .focus-top,
  .side-row {
    align-items: flex-start;
  }
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}