:root {
  --color-night: #0B1D3A;
  --color-deep: #0E2A4C;
  --color-orange: #FF6B00;
  --color-gold: #D4AF37;
  --color-ink: #111827;
  --color-ice: #F5F7FA;
  --color-gray: #CBD5E1;
  --color-green: #10B981;
  --color-yellow: #F59E0B;
  --font-head: "Noto Sans SC", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Roboto Mono", "Consolas", monospace;
  --header-max: 1440px;
  --content-max: 1200px;
  --radius: 16px;
  --cut: 18px;
  --transition: .22s ease;
}

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

html {
  scroll-behavior: smooth;
}

body,
h1,
h2,
h3,
h4,
p,
ul,
ol,
address {
  margin: 0;
}

ul,
ol {
  padding: 0;
  list-style: none;
}

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

button {
  font: inherit;
  cursor: pointer;
}

address {
  font-style: normal;
}

body {
  background: var(--color-night);
  color: var(--color-ice);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

::selection {
  background: var(--color-orange);
  color: #fff;
}

:focus-visible {
  outline: 3px solid var(--color-orange);
  outline-offset: 3px;
  border-radius: 2px;
}

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-head);
  color: var(--color-ice);
}

.container,
.section-inner {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: clamp(64px, 8vw, 110px) 0;
}

.section-head {
  max-width: 720px;
  margin-bottom: 40px;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  color: var(--color-gold);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .16em;
}

.kicker::before {
  content: "";
  width: 34px;
  height: 2px;
  background: var(--color-orange);
}

.display-title {
  font-family: var(--font-head);
  font-weight: 200;
  font-size: clamp(2.75rem, 7vw, 5.25rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--color-ice);
}

.section-title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  line-height: 1.16;
  color: var(--color-ice);
}

.lead {
  max-width: 58ch;
  margin-top: 16px;
  color: var(--color-gray);
  font-size: 1.05rem;
}

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

.panel {
  background: var(--color-ink);
  border: 1px solid rgba(245, 247, 250, .08);
  border-radius: var(--radius);
  padding: 24px;
  color: var(--color-ice);
}

.panel-cut {
  background:
    linear-gradient(135deg, rgba(255, 107, 0, .14), transparent 42%),
    var(--color-ink);
  border: 1px solid rgba(255, 107, 0, .24);
  padding: 24px;
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, var(--cut) 100%, 0 calc(100% - var(--cut)));
}

.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, rgba(255, 107, 0, .12), rgba(11, 29, 58, .4));
  border-radius: var(--radius);
}

.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 4px 10px;
  background: var(--color-gold);
  color: var(--color-night);
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .1em;
  border-radius: 2px;
}

.stat {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}

.stat-label {
  color: var(--color-gray);
  font-size: .72rem;
  letter-spacing: .14em;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--color-ice);
  line-height: 1.1;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  background: var(--color-orange);
  border: 1px solid transparent;
  border-radius: 8px;
  color: #fff;
  font-weight: 700;
  font-size: .95rem;
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(255, 107, 0, .24);
}

.btn-ghost {
  background: transparent;
  border-color: rgba(245, 247, 250, .35);
  color: var(--color-ice);
}

.btn-ghost:hover {
  background: rgba(245, 247, 250, .08);
  box-shadow: none;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  max-width: var(--header-max);
  margin: 0 auto;
  padding: 24px 32px 0;
  color: var(--color-gray);
  font-size: .9rem;
}

.breadcrumb a {
  color: var(--color-gray);
  transition: color var(--transition);
}

.breadcrumb a:hover {
  color: var(--color-orange);
}

.breadcrumb-sep {
  color: var(--color-gold);
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 20px;
}

.bento-cell {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
}

.accordion {
  display: grid;
  gap: 12px;
}

.accordion-item {
  background: var(--color-ink);
  border: 1px solid rgba(245, 247, 250, .1);
  border-radius: 12px;
  overflow: hidden;
}

.accordion-trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  width: 100%;
  padding: 18px 20px;
  background: none;
  border: 0;
  color: var(--color-ice);
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  text-align: left;
  cursor: pointer;
}

.accordion-trigger::after {
  content: "+";
  color: var(--color-orange);
  font-size: 1.4rem;
  font-weight: 400;
  transition: transform var(--transition);
}

.accordion-item[data-open] .accordion-trigger::after {
  transform: rotate(45deg);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height .35s ease;
}

.accordion-item[data-open] .accordion-panel {
  max-height: 75vh;
}

.accordion-content {
  padding: 0 20px 20px;
  color: var(--color-gray);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background:
    linear-gradient(180deg, rgba(255, 107, 0, .07), transparent 14%),
    linear-gradient(180deg, var(--color-night), var(--color-deep));
  color: var(--color-ice);
  border-bottom: 1px solid rgba(212, 175, 55, .16);
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header[data-scrolled] {
  background: rgba(11, 29, 58, .96);
  box-shadow: 0 12px 32px rgba(0, 0, 0, .28);
}

.skip-link {
  position: absolute;
  left: 16px;
  top: -100px;
  z-index: 300;
  padding: 10px 16px;
  background: var(--color-orange);
  color: #fff;
  border-radius: 0 0 10px 10px;
  font-weight: 700;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 0;
}

.page-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--color-orange), var(--color-gold));
  z-index: 120;
  pointer-events: none;
}

.header-shell {
  max-width: var(--header-max);
  margin: 0 auto;
  padding: 20px 32px 0;
  transition: padding var(--transition);
}

.site-header[data-scrolled] .header-shell {
  padding-top: 12px;
}

.masthead {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  padding-bottom: 18px;
  transition: padding var(--transition);
}

.site-header[data-scrolled] .masthead {
  padding-bottom: 10px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  text-align: center;
}

.brand-name {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.6rem, 3vw, 2.35rem);
  line-height: 1.1;
  letter-spacing: .08em;
  color: var(--color-ice);
}

.brand-name em {
  font-style: normal;
  color: var(--color-orange);
}

.brand-badge {
  display: inline-block;
  background: var(--color-gold);
  color: var(--color-night);
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .18em;
  padding: 3px 10px;
  border-radius: 2px;
  transform: skewX(-8deg);
  transition: opacity var(--transition);
}

.site-header[data-scrolled] .brand-badge {
  opacity: .85;
}

.nav-toggle {
  display: none;
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: transparent;
  border: 1px solid rgba(245, 247, 250, .24);
  border-radius: 8px;
  color: var(--color-ice);
}

.nav-toggle-icon {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
}

.nav-toggle-bar {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
}

.nav-toggle-label {
  font-size: .8rem;
  letter-spacing: .12em;
}

.header-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  border-top: 1px solid rgba(212, 175, 55, .22);
  padding: 0 0 12px;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 28px;
  padding: 12px 0 6px;
}

.nav-item {
  list-style: none;
}

.nav-link {
  position: relative;
  display: inline-block;
  padding: 6px 2px;
  color: var(--color-gray);
  font-size: .92rem;
  font-weight: 500;
  letter-spacing: .08em;
  transition: color var(--transition);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 2px;
  width: 0;
  background: var(--color-orange);
  transition: width var(--transition);
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--color-ice);
}

.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  width: 100%;
}

.nav-link[aria-current="page"] {
  font-weight: 700;
}

.header-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 9px 16px;
  margin-left: 14px;
  background: var(--color-orange);
  color: #fff;
  border-radius: 6px;
  font-size: .85rem;
  font-weight: 700;
  letter-spacing: .04em;
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.header-cta:hover {
  background: #ff7f1f;
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(255, 107, 0, .3);
}

.speedline {
  height: 3px;
  background: repeating-linear-gradient(115deg, var(--color-orange) 0 16px, transparent 16px 32px);
  opacity: .8;
}

.site-footer {
  position: relative;
  overflow: hidden;
  background: linear-gradient(180deg, var(--color-night), #08142B 90%);
  color: var(--color-gray);
  border-top: 1px solid rgba(212, 175, 55, .18);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -80px;
  right: -30px;
  width: 340px;
  height: 160px;
  background: repeating-linear-gradient(115deg, rgba(255, 107, 0, .18) 0 24px, transparent 24px 52px);
  transform: rotate(-8deg);
}

.footer-shell {
  position: relative;
  max-width: var(--header-max);
  margin: 0 auto;
  padding: 56px 32px 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.4fr;
  gap: 48px;
}

.footer-brand-block,
.footer-links-block,
.footer-contact-block {
  min-width: 0;
}

.footer-brand {
  color: var(--color-ice);
  font-family: var(--font-head);
  font-size: 1.5rem;
  font-weight: 800;
  letter-spacing: .05em;
}

.footer-intro {
  margin-top: 10px;
  color: var(--color-gray);
}

.footer-trust {
  margin-top: 16px;
  padding-left: 14px;
  border-left: 2px solid var(--color-gold);
  color: rgba(212, 175, 55, .85);
  font-size: .85rem;
}

.footer-heading {
  margin-bottom: 16px;
  color: var(--color-gold);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .18em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  width: fit-content;
  color: var(--color-gray);
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--color-orange);
}

.footer-address {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-style: normal;
  color: var(--color-gray);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-top: 44px;
  padding-top: 20px;
  border-top: 1px solid rgba(245, 247, 250, .12);
  font-size: .86rem;
}

.footer-copy {
  color: var(--color-gray);
}

.footer-icp {
  color: var(--color-gold);
}

@media (max-width: 1000px) {
  .header-shell {
    padding-left: 20px;
    padding-right: 20px;
  }

  .masthead {
    justify-content: center;
    padding-top: 4px;
  }

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

  .header-nav {
    display: none;
    flex-direction: column;
    align-items: stretch;
    flex-wrap: nowrap;
    border-top: 0;
    padding-bottom: 18px;
  }

  .header-nav[data-open] {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    width: 100%;
    gap: 6px;
    padding: 12px 0 4px;
  }

  .nav-link {
    display: block;
    width: 100%;
    text-align: center;
    padding: 10px 12px;
  }

  .nav-link::after {
    display: none;
  }

  .nav-link[aria-current="page"] {
    background: rgba(255, 107, 0, .14);
    border-radius: 8px;
  }

  .header-cta {
    margin: 12px auto 0;
    width: 100%;
    max-width: 280px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

@media (max-width: 640px) {
  .container,
  .section-inner {
    padding: 0 20px;
  }

  .header-shell {
    padding: 14px 20px 0;
  }

  .brand-name {
    font-size: 1.45rem;
  }

  .nav-toggle-label {
    display: none;
  }

  .footer-shell {
    padding: 40px 20px 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
  }

  .breadcrumb {
    padding: 20px 20px 0;
  }

  .bento-grid {
    grid-template-columns: 1fr;
  }
}

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

  *,
  *::before,
  *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    scroll-behavior: auto !important;
  }
}