:root {
  --color-primary: #0A1A3F;
  --color-accent: #FF6B35;
  --color-support: #8A2BE2;
  --color-dark: #07122A;
  --color-card: #123B6E;
  --color-light: #F5F7FA;
  --color-success: #00C48C;
  --color-warning: #FFB800;
  --color-error: #FF4D4F;
  --gradient-main: linear-gradient(135deg, #0A1A3F, #8A2BE2);
  --font-heading: "D-DIN", "Arial Black", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "Microsoft YaHei", -apple-system, "Segoe UI", sans-serif;
  --font-number: "Roboto Mono", "SFMono-Regular", Consolas, monospace;
  --nav-width: 300px;
  --header-height-mobile: 72px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-pill: 999px;
  --shadow-lg: 0 18px 48px rgba(7, 18, 42, 0.28);
  --shadow-sm: 0 6px 20px rgba(7, 18, 42, 0.12);
  --transition: 0.25s ease;
  --content-width: 1280px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.85);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 0.5em;
  font-family: var(--font-heading);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: inherit;
}

h1 { font-size: clamp(2.5rem, 5.6vw, 4.4rem); }
h2 { font-size: clamp(1.8rem, 3vw, 2.8rem); }
h3 { font-size: 1.4rem; }
h4 { font-size: 1.1rem; }

p {
  margin: 0 0 1em;
}

a {
  color: var(--color-accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

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

ul, ol {
  margin: 0 0 1em;
  padding-left: 1.25rem;
}

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

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 6px;
}

.skip-link {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 9999;
  display: inline-flex;
  align-items: center;
  padding: 12px 20px;
  border-radius: var(--radius-pill);
  background: var(--color-accent);
  color: var(--color-primary);
  font-weight: 900;
  text-decoration: none;
  box-shadow: var(--shadow-sm);
  transform: translateY(-220%);
  transition: transform 0.25s ease;
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  background:
    linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px),
    radial-gradient(900px 500px at 110% -5%, rgba(138,43,226,0.22), transparent 60%),
    radial-gradient(700px 400px at -10% 110%, rgba(255,107,53,0.15), transparent 60%),
    var(--color-primary);
  background-size: 36px 36px, 36px 36px, auto, auto;
  background-repeat: repeat, repeat, no-repeat, no-repeat;
  border-right: 1px solid rgba(255,255,255,0.08);
}

.header-shell {
  position: relative;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 14px 14px 14px 4px;
  background: linear-gradient(135deg, var(--color-accent), #FF8C61);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -0.02em;
  transform: skewX(-6deg);
  box-shadow: 0 8px 22px rgba(255,107,53,0.3);
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 20px;
  font-weight: 900;
  letter-spacing: 0.02em;
  color: #fff;
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  border: 0;
  border-radius: var(--radius-pill);
  background: rgba(255,255,255,0.08);
  color: #fff;
  cursor: pointer;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  font: inherit;
  font-weight: 800;
  line-height: 1;
}

.nav-toggle-box {
  position: relative;
  display: inline-block;
  width: 20px;
  height: 14px;
}

.nav-toggle-inner,
.nav-toggle-inner::before,
.nav-toggle-inner::after {
  content: "";
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  border-radius: 999px;
  background: currentColor;
  transition: transform 0.25s ease, top 0.25s ease, background 0.25s ease;
}

.nav-toggle-inner {
  top: 50%;
  transform: translateY(-50%);
}

.nav-toggle-inner::before {
  top: -6px;
}

.nav-toggle-inner::after {
  top: 6px;
}

.nav-toggle-label {
  font-size: 14px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-inner {
  background: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-inner::before {
  top: 0;
  transform: rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-inner::after {
  top: 0;
  transform: rotate(-45deg);
}

.site-nav {
  margin: 0;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-item {
  margin: 0;
  padding: 0;
}

.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 18px;
  border-radius: var(--radius-pill);
  color: rgba(255,255,255,0.72);
  font-weight: 700;
  font-size: 15px;
  line-height: 1.2;
  text-decoration: none;
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
}

.nav-link::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: currentColor;
  opacity: 0.45;
  flex: 0 0 auto;
  transition: background 0.2s, opacity 0.2s, box-shadow 0.2s;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: #fff;
  background: rgba(255,255,255,0.08);
  transform: skewX(-4deg);
}

.nav-link[aria-current="page"] {
  background: linear-gradient(90deg, var(--color-accent), rgba(255,107,53,0.75));
  color: var(--color-primary);
  box-shadow: 0 10px 26px rgba(255,107,53,0.3);
  transform: skewX(-4deg);
}

.nav-link[aria-current="page"]::before {
  opacity: 1;
  background: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(255,255,255,0.2);
}

.header-foot {
  display: none;
}

.header-trust {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(255,255,255,0.62);
  margin: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 24px;
  border-radius: var(--radius-pill);
  border: 0;
  font: inherit;
  font-weight: 800;
  line-height: 1;
  text-decoration: none;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.btn-accent {
  background: var(--color-accent);
  color: var(--color-primary);
  box-shadow: 0 10px 28px rgba(255,107,53,0.28);
}

.btn-accent:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 32px rgba(255,107,53,0.4);
  color: var(--color-primary);
}

.btn-ghost {
  background: transparent;
  color: #fff;
  border: 1px solid rgba(255,255,255,0.3);
}

.btn-ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.header-login {
  width: 100%;
}

@media (min-width: 1024px) {
  body {
    margin-left: var(--nav-width);
  }

  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--nav-width);
    z-index: 1000;
  }

  .header-shell {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 36px 28px 32px;
  }

  .header-shell::after {
    content: "";
    position: absolute;
    left: 28px;
    right: 28px;
    bottom: 12px;
    height: 4px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-support));
    opacity: 0.8;
  }

  .site-nav {
    flex: 1 1 auto;
    min-height: 0;
    overflow-y: auto;
    padding: 36px 0 12px;
  }

  .nav-list {
    display: grid;
    gap: 6px;
  }

  .header-foot {
    display: grid;
    gap: 16px;
    margin-top: auto;
    padding-bottom: 12px;
  }
}

@media (max-width: 1023.98px) {
  body {
    padding-top: var(--header-height-mobile);
  }

  .site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height-mobile);
    z-index: 1100;
    border-right: 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .header-shell {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    padding: 0 18px;
  }

  .header-shell::after {
    display: none;
  }

  .nav-toggle {
    display: inline-flex;
    position: relative;
    z-index: 1200;
  }

  .site-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: min(320px, 85vw);
    height: 100vh;
    height: 100dvh;
    overflow-y: auto;
    padding: calc(var(--header-height-mobile) + 16px) 20px 32px;
    background:
      linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px),
      var(--color-dark);
    background-size: 30px 30px, 30px 30px;
    border-right: 1px solid rgba(255,255,255,0.08);
    box-shadow: var(--shadow-lg);
    transform: translateX(-105%);
    transition: transform 0.3s ease;
    z-index: 1090;
  }

  .site-nav[data-open] {
    transform: translateX(0);
  }

  .nav-list {
    display: grid;
    gap: 8px;
  }

  .header-foot {
    display: none;
  }
}

.site-footer {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(600px 260px at 85% 10%, rgba(255,107,53,0.1), transparent 60%),
    linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px),
    var(--color-dark);
  background-size: auto, 40px 40px, 40px 40px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-shell {
  max-width: var(--content-width);
  margin-inline: auto;
  padding: 68px clamp(20px, 4vw, 48px) 28px;
}

.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1.2fr;
  gap: 48px;
}

.footer-brand {
  display: grid;
  align-content: start;
  gap: 10px;
}

.footer-brand .brand {
  margin-bottom: 6px;
}

.footer-trust {
  max-width: 34ch;
  margin-top: 0;
  color: rgba(255,255,255,0.6);
  font-size: 14px;
  line-height: 1.7;
}

.footer-nav {
  display: grid;
  align-content: start;
  gap: 12px;
}

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.footer-links a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  font-weight: 600;
  transition: color 0.2s, padding-left 0.2s;
}

.footer-links a:hover {
  color: var(--color-accent);
  padding-left: 4px;
}

.footer-contact {
  display: grid;
  align-content: start;
  gap: 8px;
}

.footer-contact p {
  margin: 0;
  color: rgba(255,255,255,0.65);
  font-size: 14px;
  line-height: 1.6;
}

.footer-bottom {
  margin-top: 48px;
  padding-top: 22px;
  border-top: 1px solid rgba(255,255,255,0.08);
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  justify-content: space-between;
  font-size: 13px;
  color: rgba(255,255,255,0.45);
}

.footer-copy {
  margin: 0;
}

@media (max-width: 1023.98px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .footer-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 767.98px) {
  .footer-top {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-brand {
    grid-column: auto;
  }

  .footer-shell {
    padding-top: 48px;
  }

  .footer-bottom {
    margin-top: 32px;
  }
}

.container {
  width: 100%;
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: clamp(20px, 4vw, 48px);
}

.grid {
  display: grid;
  gap: 24px;
}

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

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

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

@media (max-width: 1023.98px) {
  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767.98px) {
  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-number);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.section-kicker::before {
  content: "";
  width: 28px;
  height: 2px;
  border-radius: 999px;
  background: var(--color-accent);
}

.section-title {
  margin-bottom: 12px;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  color: inherit;
}

.section-desc {
  max-width: 60ch;
  font-size: 18px;
  line-height: 1.7;
  color: inherit;
  opacity: 0.78;
}

.media-frame {
  position: relative;
  aspect-ratio: 16 / 10;
  min-height: 180px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, var(--color-primary), var(--color-support));
  box-shadow: var(--shadow-lg);
}

.media-frame img,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.media-frame:hover img {
  transform: scale(1.03);
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(255,255,255,0.14);
  pointer-events: none;
}

.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 8px;
  align-items: center;
  padding: 0;
  margin: 0;
  list-style: none;
  font-size: 14px;
}

.breadcrumbs li + li::before {
  content: "/";
  color: rgba(255,255,255,0.35);
}

.breadcrumbs a {
  color: rgba(255,255,255,0.68);
  text-decoration: none;
  transition: color 0.2s;
}

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

.breadcrumbs [aria-current="page"] {
  color: var(--color-accent);
  font-weight: 700;
}

.page-prose {
  max-width: 72ch;
  color: var(--color-dark);
}

.page-prose p {
  font-size: 17px;
  line-height: 1.8;
}

.page-prose h2 {
  margin-top: 1.6em;
}

.page-prose ul,
.page-prose ol {
  padding-left: 1.4rem;
}

.page-prose li {
  margin-bottom: 0.5em;
}

.data-number {
  font-family: var(--font-number);
  font-variant-numeric: tabular-nums;
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}