:root {
  --primary-deep-green: #0B3D2E;
  --gold-accent: #C9A227;
  --dark-bg: #121212;
  --text-light: #F5F5F5;
  --text-muted: #A0A0A0;
  --gradient-green-gold: linear-gradient(135deg, #0B3D2E 0%, #C9A227 100%);
  --border-color: #2A5A48;
  --card-bg: #1A1F1C;
}

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

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

body {
  margin: 0;
  font-family: 'Noto Sans SC', 'Helvetica Neue', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--dark-bg);
  color: var(--text-light);
  line-height: 1.7;
}

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

a {
  color: var(--gold-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul[class] {
  list-style: none;
  margin: 0;
  padding: 0;
}

h1,
h2,
h3,
h4 {
  font-family: 'Roboto Condensed', 'Impact', 'Noto Sans SC', sans-serif;
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: 0.01em;
}

:focus-visible {
  outline: 3px solid var(--gold-accent);
  outline-offset: 2px;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 300;
  background: var(--gold-accent);
  color: #121212;
  font-weight: 700;
  padding: 10px 20px;
  border-radius: 0 0 8px 0;
}

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--primary-deep-green);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.35);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  pointer-events: none;
  z-index: 1;
  background: repeating-linear-gradient(120deg, rgba(201, 162, 39, 0.85) 0 12px, transparent 12px 28px);
}

.header-shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 80px;
  position: relative;
}

.brand-block {
  flex-shrink: 0;
}

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

.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 56px;
  height: 44px;
  padding: 0 12px;
  background: var(--gold-accent);
  color: #121212;
  font-family: 'Roboto Condensed', 'Impact', sans-serif;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.08em;
  clip-path: polygon(0 0, 100% 0, 86% 100%, 0 100%);
}

.brand-mark-accent {
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  background: var(--primary-deep-green);
  transform: rotate(45deg);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: 'Roboto Condensed', 'Impact', sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  color: var(--text-light);
  line-height: 1.2;
}

.brand-tagline {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.3;
}

.main-nav {
  flex: 1;
  display: flex;
  justify-content: center;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-list a {
  display: block;
  padding: 10px 18px;
  font-family: 'Roboto Condensed', 'Impact', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--text-light);
  border-bottom: 3px solid transparent;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.nav-list a:hover {
  color: var(--gold-accent);
  border-bottom-color: rgba(201, 162, 39, 0.5);
  background: rgba(255, 255, 255, 0.03);
  text-decoration: none;
}

.nav-list a[aria-current="page"] {
  color: var(--gold-accent);
  border-bottom-color: var(--gold-accent);
  background: rgba(201, 162, 39, 0.1);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0.625rem 1.5rem;
  font-family: 'Roboto Condensed', 'Impact', sans-serif;
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: 0.06em;
  border: 2px solid transparent;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  text-decoration: none;
  transform: translateY(-2px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--gold-accent);
  color: #121212;
  border-color: var(--gold-accent);
}

.btn-primary:hover {
  background: transparent;
  color: var(--gold-accent);
  box-shadow: 0 4px 20px rgba(201, 162, 39, 0.25);
}

.nav-toggle {
  display: none;
  width: 48px;
  height: 48px;
  background: transparent;
  border: 2px solid var(--border-color);
  color: var(--text-light);
  cursor: pointer;
  position: relative;
  padding: 0;
}

.nav-toggle:hover {
  border-color: var(--gold-accent);
  color: var(--gold-accent);
}

.nav-toggle-bar {
  position: absolute;
  left: 12px;
  right: 12px;
  height: 2px;
  background: currentColor;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.nav-toggle-bar:nth-child(1) {
  top: 15px;
}

.nav-toggle-bar:nth-child(2) {
  top: 23px;
}

.nav-toggle-bar:nth-child(3) {
  top: 31px;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

.header-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: rgba(201, 162, 39, 0.15);
  pointer-events: none;
}

.progress-bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--gold-accent), #E8C84A);
}

.site-footer {
  background: var(--primary-deep-green);
  color: var(--text-light);
  position: relative;
}

.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  pointer-events: none;
  background: repeating-linear-gradient(120deg, var(--gold-accent) 0 14px, transparent 14px 30px);
}

.footer-inner {
  max-width: 1440px;
  margin: 0 auto;
  padding: 64px 24px 28px;
}

.footer-top {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) 2fr;
  gap: 48px;
}

.footer-logo {
  font-family: 'Roboto Condensed', 'Impact', sans-serif;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--text-light);
  text-decoration: none;
}

.footer-logo span {
  color: var(--gold-accent);
}

.footer-logo:hover {
  text-decoration: none;
  color: var(--gold-accent);
}

.footer-tagline {
  margin-top: 8px;
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
}

.footer-trust {
  margin-top: 20px;
  padding: 16px 18px;
  border-left: 4px solid var(--gold-accent);
  background: rgba(0, 0, 0, 0.2);
  font-size: 0.85rem;
  color: #DDDDDD;
  max-width: 520px;
  line-height: 1.8;
  display: flex;
  gap: 12px;
  align-items: flex-start;
}

.trust-dot {
  flex-shrink: 0;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gold-accent);
  margin-top: 8px;
  box-shadow: 0 0 8px rgba(201, 162, 39, 0.6);
}

.footer-cols {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.footer-col-title {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--gold-accent);
  margin: 0 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col ul li {
  margin-bottom: 10px;
}

.footer-col a {
  color: var(--text-light);
  opacity: 0.85;
  font-size: 0.9rem;
  transition: opacity 0.2s ease, padding-left 0.2s ease;
}

.footer-col a:hover {
  color: var(--gold-accent);
  opacity: 1;
  padding-left: 6px;
  text-decoration: none;
}

.footer-bottom {
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  align-items: baseline;
}

.footer-contact {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-contact-sep {
  color: rgba(255, 255, 255, 0.2);
}

.footer-meta {
  display: flex;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
}

.footer-meta-sep {
  color: rgba(255, 255, 255, 0.2);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 20px 0;
  list-style: none;
}

.breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: rgba(255, 255, 255, 0.2);
}

.breadcrumb a {
  color: var(--text-muted);
}

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

.breadcrumb [aria-current="page"] {
  color: var(--gold-accent);
  font-weight: 600;
}

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

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

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

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

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  padding: 24px;
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.3);
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--gold-accent);
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.3), 0 2px 0 var(--gold-accent);
}

.card-title {
  font-size: 1.3rem;
  margin: 0 0 10px;
  color: var(--text-light);
}

.prose {
  max-width: 720px;
}

.prose h2 {
  margin-top: 2em;
}

.prose p {
  margin-bottom: 1.25em;
  color: rgba(255, 255, 255, 0.85);
}

.prose ul {
  margin: 0 0 1.25em;
  padding-left: 1.2em;
}

.prose li {
  margin-bottom: 0.4em;
}

.media {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, var(--primary-deep-green), var(--card-bg));
  border: 1px solid var(--border-color);
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(120deg, transparent 0 18px, rgba(201, 162, 39, 0.06) 18px 20px);
}

.media-16-9 {
  aspect-ratio: 16 / 9;
}

.media-4-3 {
  aspect-ratio: 4 / 3;
}

.media-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 160px;
  color: var(--text-muted);
  font-size: 0.85rem;
}

@media (max-width: 980px) {
  .header-shell {
    flex-wrap: wrap;
    min-height: 64px;
    padding: 10px 16px;
    gap: 16px;
  }

  .brand-mark {
    min-width: 48px;
    height: 36px;
    font-size: 1rem;
  }

  .brand-name {
    font-size: 1.1rem;
  }

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

  .main-nav {
    flex-basis: 100%;
    order: 4;
    display: none;
    width: 100%;
    border-top: 1px solid var(--border-color);
    margin-top: 8px;
    padding-top: 4px;
  }

  .main-nav[data-open] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
  }

  .nav-list a {
    padding: 14px 8px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
    border-left: 3px solid transparent;
  }

  .nav-list a[aria-current="page"] {
    border-left-color: var(--gold-accent);
    background: rgba(201, 162, 39, 0.08);
  }

  .nav-list li:last-child a {
    border-bottom: none;
  }

  .header-actions {
    margin-left: auto;
  }

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

  .footer-cols {
    gap: 16px;
  }

  .footer-inner {
    padding: 48px 20px 24px;
  }

  .grid-3,
  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 600px) {
  .brand-tagline {
    display: none;
  }

  .header-actions .btn-primary {
    padding: 0.5rem 0.9rem;
    font-size: 0.85rem;
    min-height: 40px;
  }

  .footer-cols {
    grid-template-columns: 1fr 1fr;
  }

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

  .grid-2,
  .grid-3,
  .grid-4 {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
}