:root {
  --brand: #1a56db;
  --brand-dark: #1e3a8a;
  --brand-light: #3b82f6;
  --accent: #7c3aed;
  --accent-2: #0f766e;
  --bg: #f4f7ff;
  --bg-alt: #ffffff;
  --surface: rgba(255, 255, 255, 0.72);
  --surface-solid: #ffffff;
  --text: #1e293b;
  --text-soft: #475569;
  --text-muted: #64748b;
  --border: rgba(148, 163, 184, 0.28);
  --shadow-sm: 0 4px 14px rgba(30, 58, 138, 0.08);
  --shadow-md: 0 12px 34px rgba(30, 58, 138, 0.12);
  --shadow-lg: 0 24px 60px rgba(30, 58, 138, 0.16);
  --radius-sm: 10px;
  --radius: 18px;
  --radius-lg: 26px;
  --grad-hero: linear-gradient(135deg, #1a56db 0%, #3b82f6 45%, #7c3aed 100%);
  --grad-cta: linear-gradient(135deg, #1a56db 0%, #7c3aed 100%);
  --grad-card: linear-gradient(160deg, rgba(255, 255, 255, 0.9), rgba(244, 247, 255, 0.65));
  --header-h: 72px;
  --container: 1180px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

html[data-theme="dark"] {
  --bg: #0b1220;
  --bg-alt: #0f1a2e;
  --surface: rgba(20, 32, 54, 0.68);
  --surface-solid: #142036;
  --text: #e2e8f0;
  --text-soft: #cbd5e1;
  --text-muted: #94a3b8;
  --border: rgba(148, 163, 184, 0.2);
  --shadow-sm: 0 4px 14px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 12px 34px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.6);
  --grad-card: linear-gradient(160deg, rgba(30, 46, 74, 0.9), rgba(15, 26, 46, 0.7));
  --grad-hero: linear-gradient(135deg, #0f2a6b 0%, #1a56db 50%, #4c1d95 100%);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 12px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background: var(--bg);
  background-image: radial-gradient(circle at 12% 0%, rgba(59, 130, 246, 0.12), transparent 42%),
    radial-gradient(circle at 88% 8%, rgba(124, 58, 237, 0.1), transparent 40%);
  background-attachment: fixed;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color 0.35s var(--ease), color 0.35s var(--ease);
}

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

a {
  color: var(--brand);
  text-decoration: none;
  transition: color 0.25s var(--ease), opacity 0.25s var(--ease);
}

a:hover {
  color: var(--accent);
}

h1, h2, h3, h4 {
  line-height: 1.35;
  margin: 0 0 0.6em;
  color: var(--text);
  font-weight: 700;
  letter-spacing: 0.01em;
}

h1 { font-size: clamp(1.6rem, 4vw, 2.6rem); }
h2 { font-size: clamp(1.35rem, 3vw, 2rem); }
h3 { font-size: clamp(1.1rem, 2.2vw, 1.35rem); }

p { margin: 0 0 1em; color: var(--text-soft); }

ul, ol { margin: 0 0 1em; padding-left: 1.4em; color: var(--text-soft); }
li { margin-bottom: 0.45em; }

blockquote {
  margin: 1.2em 0;
  padding: 1em 1.4em;
  border-left: 4px solid var(--brand);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--surface);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  color: var(--text-soft);
  font-style: italic;
  box-shadow: var(--shadow-sm);
}

time {
  display: inline-block;
  font-size: 0.82rem;
  color: var(--text-muted);
  background: rgba(26, 86, 219, 0.08);
  padding: 0.15em 0.7em;
  border-radius: 999px;
}

/* ============ Header ============ */
#site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-h);
  background: var(--surface);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
  transition: background-color 0.35s var(--ease), box-shadow 0.35s var(--ease);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  height: 100%;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 20px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.15rem;
  color: var(--text);
  white-space: nowrap;
  flex-shrink: 0;
}

.logo svg {
  border-radius: 8px;
  box-shadow: 0 6px 16px rgba(26, 86, 219, 0.35);
  transition: transform 0.4s var(--ease);
}

.logo:hover svg {
  transform: rotate(-8deg) scale(1.06);
}

.logo:hover { color: var(--brand); }

nav[aria-label="主导航"] {
  flex: 1;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.nav-list::-webkit-scrollbar { display: none; }

.nav-list li { margin: 0; }

.nav-list a {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--text-soft);
  white-space: nowrap;
  transition: all 0.25s var(--ease);
}

.nav-list a:hover {
  color: #fff;
  background: var(--grad-cta);
  box-shadow: 0 6px 16px rgba(26, 86, 219, 0.3);
  transform: translateY(-1px);
}

.header-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.site-search {
  display: flex;
  align-items: center;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 999px;
  overflow: hidden;
  transition: box-shadow 0.25s var(--ease), border-color 0.25s var(--ease);
}

.site-search:focus-within {
  border-color: var(--brand-light);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.18);
}

.site-search input {
  border: none;
  outline: none;
  background: transparent;
  padding: 8px 14px;
  font-size: 0.86rem;
  color: var(--text);
  width: 150px;
  font-family: inherit;
}

.site-search input::placeholder { color: var(--text-muted); }

.site-search button {
  border: none;
  cursor: pointer;
  padding: 8px 16px;
  font-size: 0.84rem;
  font-family: inherit;
  color: #fff;
  background: var(--grad-cta);
  transition: opacity 0.25s var(--ease);
}

.site-search button:hover { opacity: 0.88; }

#theme-toggle,
#menu-toggle {
  border: 1px solid var(--border);
  background: var(--bg-alt);
  color: var(--text);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 1.05rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s var(--ease);
}

#theme-toggle:hover,
#menu-toggle:hover {
  background: var(--grad-cta);
  color: #fff;
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(26, 86, 219, 0.35);
}

#menu-toggle { display: none; }

/* ============ Main / Sections ============ */
main {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px 60px;
}

main > section {
  margin: 48px 0;
  padding: 34px clamp(18px, 4vw, 42px);
  background: var(--grad-card);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.4s var(--ease), transform 0.4s var(--ease);
  animation: fadeUp 0.7s var(--ease) both;
}

main > section:hover {
  box-shadow: var(--shadow-md);
}

main > section > h2 {
  position: relative;
  padding-bottom: 12px;
  margin-bottom: 22px;
}

main > section > h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 56px;
  height: 4px;
  border-radius: 999px;
  background: var(--grad-cta);
}

/* ============ Hero ============ */
#hero {
  position: relative;
  margin-top: 32px;
  padding: 0;
  background: transparent;
  border: none;
  box-shadow: none;
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  overflow: hidden;
}

#hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--grad-hero);
  border-radius: var(--radius-lg);
  z-index: -1;
}

#hero > * {
  position: relative;
  z-index: 1;
}

.hero-slider {
  position: relative;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  overflow: hidden;
  min-height: 240px;
}

.slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: scale(1.04);
  transition: opacity 0.8s var(--ease), transform 1.2s var(--ease);
  pointer-events: none;
}

.slide.active {
  opacity: 1;
  transform: scale(1);
  position: relative;
  pointer-events: auto;
}

.slide svg {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

#hero-title,
.hero-lead,
.hero-stats,
#hero .cta {
  padding-left: clamp(20px, 4vw, 48px);
  padding-right: clamp(20px, 4vw, 48px);
}

#hero-title {
  color: #fff;
  margin: 28px 0 14px;
  text-shadow: 0 2px 18px rgba(0, 0, 0, 0.25);
}

.hero-lead {
  color: rgba(255, 255, 255, 0.92);
  max-width: 780px;
  font-size: 1.02rem;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin: 26px 0 28px;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 18px 10px;
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #fff;
  text-align: center;
  transition: transform 0.35s var(--ease), background-color 0.35s var(--ease);
}

.stat:hover {
  transform: translateY(-5px);
  background: rgba(255, 255, 255, 0.22);
}

.stat .num {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(180deg, #fff, #cfe0ff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.stat span:last-child {
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.85);
}

#hero .cta {
  display: inline-block;
  margin: 0 0 36px clamp(20px, 4vw, 48px);
  padding: 14px 34px;
  font-weight: 700;
  color: var(--brand-dark);
  background: #fff;
  border-radius: 999px;
  box-shadow: 0 14px 34px rgba(0, 0, 0, 0.22);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#hero .cta:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 20px 44px rgba(0, 0, 0, 0.3);
  color: var(--accent);
}

/* ============ Breadcrumb ============ */
.breadcrumb {
  margin: 26px 0 0;
  font-size: 0.86rem;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumb li { margin: 0; color: var(--text-muted); }

.breadcrumb li + li::before {
  content: "/";
  margin-right: 6px;
  color: var(--text-muted);
  opacity: 0.6;
}

.breadcrumb a { color: var(--text-soft); }
.breadcrumb a:hover { color: var(--brand); }
.breadcrumb [aria-current="page"] { color: var(--brand); font-weight: 600; }

/* ============ Cards / Articles ============ */
#news article,
#articles article {
  padding: 22px 24px;
  margin-bottom: 18px;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  transition: transform 0.35s var(--ease), box-shadow 0.35s var(--ease),
    border-color 0.35s var(--ease);
}

#news article:hover,
#articles article:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: rgba(59, 130, 246, 0.45);
}

#news article h3,
#articles article h3 {
  margin-bottom: 6px;
  transition: color 0.3s var(--ease);
}

#news article:hover h3,
#articles article:hover h3 { color: var(--brand); }

#articles article a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  padding: 6px 16px;
  border-radius: 999px;
  background: rgba(26, 86, 219, 0.08);
  transition: all 0.3s var(--ease);
}

#articles article a::after {
  content: "→";
  transition: transform 0.3s var(--ease);
}

#articles article a:hover {
  color: #fff;
  background: var(--grad-cta);
  box-shadow: 0 8px 20px rgba(26, 86, 219, 0.3);
}

#articles article a:hover::after { transform: translateX(4px); }

#articles article p:first-of-type { margin-bottom: 8px; }

/* ============ HowTo ============ */
#howto ol {
  counter-reset: step;
  list-style: none;
  padding: 0;
}

#howto ol li {
  counter-increment: step;
  position: relative;
  padding: 14px 18px 14px 58px;
  margin-bottom: 12px;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#howto ol li::before {
  content: counter(step);
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--grad-cta);
  color: #fff;
  font-weight: 700;
  font-size: 0.86rem;
  box-shadow: 0 6px 14px rgba(26, 86, 219, 0.35);
}

#howto ol li:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
}

/* ============ FAQ ============ */
#faq details {
  margin-bottom: 12px;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: box-shadow 0.3s var(--ease), border-color 0.3s var(--ease);
}

#faq details[open] {
  border-color: rgba(59, 130, 246, 0.45);
  box-shadow: var(--shadow-md);
}

#faq summary {
  cursor: pointer;
  padding: 16px 48px 16px 20px;
  font-weight: 600;
  color: var(--text);
  list-style: none;
  position: relative;
  transition: color 0.3s var(--ease), background-color 0.3s var(--ease);
}

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

#faq summary::after {
  content: "+";
  position: absolute;
  right: 18px;
  top: 50%;
  transform: translateY(-50%);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(26, 86, 219, 0.1);
  color: var(--brand);
  font-weight: 700;
  transition: transform 0.3s var(--ease), background-color 0.3s var(--ease),
    color 0.3s var(--ease);
}

#faq details[open] summary::after {
  content: "−";
  background: var(--grad-cta);
  color: #fff;
  transform: translateY(-50%) rotate(180deg);
}

#faq summary:hover { color: var(--brand); background: rgba(59, 130, 246, 0.05); }

#faq details p {
  padding: 0 20px 18px;
  margin: 0;
  animation: fadeUp 0.4s var(--ease) both;
}

/* ============ Sitemap / Contact lists ============ */
#sitemap ul {
  list-style: none;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

#sitemap li { margin: 0; }

#sitemap a {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 999px;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text-soft);
  transition: all 0.3s var(--ease);
}

#sitemap a:hover {
  color: #fff;
  background: var(--grad-cta);
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(26, 86, 219, 0.3);
}

#contact ul {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
}

#contact li {
  margin: 0;
  padding: 14px 18px;
  background: var(--surface-solid);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.92rem;
  box-shadow: var(--shadow-sm);
  transition: transform 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

#contact li:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* ============ Footer ============ */
footer {
  margin-top: 60px;
  background: var(--grad-hero);
  color: rgba(255, 255, 255, 0.88);
  padding: 52px 0 28px;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.footer-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 20px;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 36px;
}

footer h3 {
  color: #fff;
  font-size: 1.05rem;
  margin-bottom: 14px;
}

footer p { color: rgba(255, 255, 255, 0.78); font-size: 0.92rem; }

footer ul { list-style: none; padding: 0; margin: 0; }

footer li { margin-bottom: 8px; }

footer a {
  color: rgba(255, 255, 255, 0.82);
  font-size: 0.92rem;
  position: relative;
  transition: color 0.25s var(--ease);
}

footer a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background: #fff;
  transition: width 0.3s var(--ease);
}

footer a:hover { color: #fff; }
footer a:hover::after { width: 100%; }

.footer-bottom {
  max-width: var(--container);
  margin: 36px auto 0;
  padding: 22px 20px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  font-size: 0.84rem;
  color: rgba(255, 255, 255, 0.7);
}

.footer-bottom p { margin: 0 0 6px; color: rgba(255, 255, 255, 0.7); font-size: 0.84rem; }

/* ============ Back to top ============ */
#back-to-top {
  position: fixed;
  right: 22px;
  bottom: 26px;
  width: 46px;
  height: 46px;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  color: #fff;
  font-size: 1.2rem;
  background: var(--grad-cta);
  box-shadow: 0 12px 28px rgba(26, 86, 219, 0.4);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: all 0.35s var(--ease);
  z-index: 900;
}

#back-to-top.show,
#back-to-top:focus-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

#back-to-top:hover {
  transform: translateY(-4px) scale(1.06);
  box-shadow: 0 18px 36px rgba(26, 86, 219, 0.5);
}

/* ============ Animations ============ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(22px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ============ Responsive ============ */
@media (max-width: 1024px) {
  .site-search input { width: 110px; }
  .nav-list a { padding: 8px 9px; font-size: 0.86rem; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  #menu-toggle { display: inline-flex; }

  nav[aria-label="主导航"] {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--surface);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s var(--ease);
  }

  nav[aria-label="主导航"].open {
    max-height: 70vh;
    overflow-y: auto;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: 12px 16px;
    gap: 2px;
  }

  .nav-list a {
    display: block;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
  }

  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .footer-inner { grid-template-columns: 1fr; gap: 26px; }
}

@media (max-width: 640px) {
  :root { --header-h: 62px; --radius-lg: 20px; }

  .header-inner { padding: 0 14px; gap: 10px; }
  .logo span { display: none; }
  .site-search { display: none; }

  main { padding: 0 14px 40px; }

  main > section {
    margin: 30px 0;
    padding: 24px 16px;
  }

  .hero-slider { min-height: 160px; }

  #hero-title { margin-top: 22px; }

  .hero-stats { gap: 10px; margin: 20px 0 22px; }

  .stat { padding: 14px 8px; }

  #hero .cta {
    display: block;
    text-align: center;
    margin: 0 16px 28px;
  }

  #news article,
  #articles article { padding: 18px 16px; }

  #howto ol li { padding: 12px 14px 12px 52px; }

  #faq summary { padding: 14px 44px 14px 16px; }

  #back-to-top { right: 14px; bottom: 16px; width: 42px; height: 42px; }
}

@media (max-width: 380px) {
  .hero-stats { grid-template-columns: 1fr; }
}
</｜｜DSML｜｜ parameter>
</invoke>