*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --c-bg: #0A192F;
  --c-bg-deep: #0B132B;
  --c-gold: #FFD700;
  --c-gold-soft: #FFC300;
  --c-red: #E63946;
  --c-paper: #F1FAEE;
  --c-gray: #A8B2D1;
  --c-indigo: #4B6CB7;
  --c-white: #FFFFFF;
  --c-card: rgba(11, 19, 43, 0.64);
  --c-border: rgba(168, 178, 209, 0.22);
  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Arial, sans-serif;
  --fw-normal: 400;
  --fw-medium: 500;
  --fw-bold: 700;
  --fw-black: 900;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 48px;
  --space-6: 96px;
  --container-wide: 1440px;
  --container: 1280px;
  --gutter: clamp(16px, 4vw, 48px);
  --header-height: 76px;
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --transition-fast: 0.18s var(--ease-out);
  --transition-base: 0.32s var(--ease-out);
  --scroll-progress: 0;
}

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

body {
  font-family: var(--font-sans);
  font-weight: var(--fw-normal);
  font-size: 16px;
  line-height: 1.7;
  color: var(--c-paper);
  background-color: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body.nav-open {
  overflow: hidden;
}

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

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

ul,
ol {
  list-style: none;
}

button {
  font: inherit;
  border: none;
  background: none;
  cursor: pointer;
  color: inherit;
}

input,
textarea {
  font: inherit;
}

::selection {
  background: var(--c-gold);
  color: var(--c-bg-deep);
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--fw-black);
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--c-paper);
}

p {
  text-wrap: pretty;
}

strong {
  font-weight: var(--fw-bold);
}

.display-title {
  font-size: clamp(2.6rem, 6vw, 5.6rem);
  font-weight: var(--fw-black);
  line-height: 0.96;
  letter-spacing: -0.03em;
}

.display-title .accent-gold {
  color: var(--c-gold);
}

.display-title .accent-red {
  color: var(--c-red);
}

.index-label {
  font-size: 12px;
  font-weight: var(--fw-bold);
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--c-gold);
}

.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: fixed;
  top: 8px;
  left: 50%;
  transform: translateX(-50%) translateY(-200%);
  background: var(--c-gold);
  color: var(--c-bg-deep);
  font-weight: var(--fw-bold);
  font-size: 14px;
  padding: 10px 24px;
  border-radius: 2px;
  z-index: 200;
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  transform: translateX(-50%) translateY(0);
}

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  color: var(--c-paper);
  background: linear-gradient(to bottom, rgba(10, 25, 47, 0.88) 0%, rgba(10, 25, 47, 0.35) 75%, transparent 100%);
  transition: background var(--transition-base), box-shadow var(--transition-base);
  pointer-events: none;
}

.site-header * {
  pointer-events: auto;
}

.site-header[data-scrolled] {
  background: rgba(10, 25, 47, 0.94);
  box-shadow: 0 4px 32px rgba(0, 0, 0, 0.45);
  border-bottom: 1px solid rgba(255, 215, 0, 0.18);
}

.header-inner {
  position: relative;
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.header-main {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  min-height: var(--header-height);
}

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

.brand-symbol {
  display: inline-grid;
  place-items: center;
  width: 42px;
  height: 42px;
  background: var(--c-gold);
  color: var(--c-bg);
  font-size: 18px;
  font-weight: var(--fw-black);
  letter-spacing: -0.02em;
  border-radius: 4px 0 4px 0;
  box-shadow: 0 0 0 1px rgba(255, 215, 0, 0.4);
  transition: transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

.brand:hover .brand-symbol {
  transform: rotate(-4deg);
  background: var(--c-gold-soft);
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand-text strong {
  font-size: 22px;
  font-weight: var(--fw-black);
  color: var(--c-paper);
  letter-spacing: 0.02em;
}

.brand-text small {
  font-size: 11px;
  font-weight: var(--fw-bold);
  color: var(--c-gold);
  letter-spacing: 0.32em;
  text-transform: uppercase;
  padding-left: 2px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 1;
  justify-content: flex-end;
}

.primary-nav {
  flex: 0 1 auto;
}

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

.nav-list a {
  position: relative;
  display: inline-block;
  padding: 10px 14px;
  font-size: 15px;
  font-weight: var(--fw-medium);
  color: rgba(241, 250, 238, 0.82);
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
}

.nav-list a::after {
  content: "";
  position: absolute;
  left: 14px;
  right: 14px;
  bottom: 4px;
  height: 1px;
  background: var(--c-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.nav-list a:hover {
  color: var(--c-gold);
}

.nav-list a:hover::after {
  transform: scaleX(1);
}

.nav-list a[aria-current="page"] {
  color: var(--c-gold);
  font-weight: var(--fw-bold);
}

.nav-list a[aria-current="page"]::after {
  transform: scaleX(1);
}

.header-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.quick-tags {
  display: flex;
  align-items: center;
  gap: 8px;
}

.quick-tags .tag {
  display: inline-block;
  padding: 4px 12px;
  border: 1px solid rgba(255, 215, 0, 0.55);
  border-radius: 999px;
  font-size: 12px;
  font-weight: var(--fw-bold);
  color: var(--c-gold);
  background: rgba(10, 25, 47, 0.35);
  letter-spacing: 0.06em;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.quick-tags .tag:hover {
  background: var(--c-gold);
  color: var(--c-bg);
  border-color: var(--c-gold);
  cursor: default;
}

.header-hotline {
  font-weight: var(--fw-bold);
  font-size: 15px;
  font-variant-numeric: tabular-nums;
  color: var(--c-gold-soft);
  letter-spacing: 0.04em;
  border-left: 2px solid rgba(230, 57, 70, 0.7);
  padding-left: 14px;
  transition: color var(--transition-fast);
}

.header-hotline:hover {
  color: var(--c-paper);
}

.nav-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 215, 0, 0.4);
  border-radius: 6px;
  background: rgba(10, 25, 47, 0.5);
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.nav-toggle:hover {
  background: rgba(10, 25, 47, 0.9);
  border-color: var(--c-gold);
}

.nav-toggle-box {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 20px;
  height: 20px;
}

.nav-toggle-box i {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--c-gold);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-box i:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.nav-toggle[aria-expanded="true"] .nav-toggle-box i:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.header-progress {
  position: absolute;
  left: 0;
  bottom: -1px;
  height: 2px;
  width: calc(var(--scroll-progress) * 1%);
  background: linear-gradient(90deg, var(--c-gold) 0%, var(--c-gold-soft) 60%, var(--c-red) 100%);
  opacity: 0.85;
  pointer-events: none;
}

.nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(5, 10, 20, 0.65);
  backdrop-filter: blur(2px);
  z-index: 105;
}

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

.site-footer {
  background-color: var(--c-bg-deep);
  color: var(--c-gray);
  border-top: 1px solid rgba(255, 215, 0, 0.15);
}

.footer-goldline {
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--c-gold) 0%, transparent 60%);
}

.site-footer {
  position: relative;
}

.footer-inner {
  max-width: var(--container-wide);
  margin-inline: auto;
  padding: var(--space-6) var(--gutter) var(--space-5);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.4fr;
  gap: var(--space-6);
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.footer-brand .brand-symbol {
  width: 38px;
  height: 38px;
  font-size: 16px;
}

.footer-trust {
  font-size: 15px;
  color: var(--c-gray);
  line-height: 1.8;
  max-width: 30em;
}

.footer-trust span {
  color: var(--c-gold);
  font-weight: var(--fw-medium);
}

.footer-heading {
  font-size: 13px;
  font-weight: var(--fw-black);
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--c-gold);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-3);
  border-bottom: 1px solid rgba(255, 215, 0, 0.15);
  position: relative;
}

.footer-heading::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 32px;
  height: 1px;
  background: var(--c-red);
}

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

.footer-links a {
  color: var(--c-paper);
  font-size: 15px;
  opacity: 0.78;
  transition: opacity var(--transition-fast), color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-links a:hover {
  color: var(--c-gold);
  opacity: 1;
  padding-left: 6px;
}

.footer-contact-col .footer-links span {
  display: block;
  font-size: 14px;
  color: var(--c-gray);
  line-height: 1.8;
}

.footer-bottomline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
  padding-top: var(--space-4);
  border-top: 1px solid rgba(168, 178, 209, 0.15);
  font-size: 13px;
  color: var(--c-gray);
}

.footer-bottomline a {
  color: var(--c-gray);
  transition: color var(--transition-fast);
}

.footer-bottomline a:hover {
  color: var(--c-gold);
}

.dot {
  color: var(--c-gold);
  margin-inline: var(--space-2);
}

.content-container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.content-container-wide {
  max-width: var(--container-wide);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

#main-content {
  padding-top: calc(var(--header-height) + 8px);
  min-height: 70vh;
}

.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
  font-size: 13px;
  color: var(--c-gray);
  margin-bottom: var(--space-5);
}

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

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

.breadcrumb .sep {
  color: var(--c-gold);
  opacity: 0.6;
}

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

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 28px;
  border-radius: 3px;
  font-weight: var(--fw-bold);
  font-size: 15px;
  line-height: 1;
  letter-spacing: 0.04em;
  background: transparent;
  position: relative;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
}

.button-primary {
  background: var(--c-gold);
  color: var(--c-bg);
}

.button-primary:hover {
  background: var(--c-gold-soft);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px rgba(255, 215, 0, 0.2);
}

.button-ghost {
  border: 1px solid rgba(255, 215, 0, 0.45);
  color: var(--c-gold);
  background: rgba(10, 25, 47, 0.35);
}

.button-ghost:hover {
  background: var(--c-gold);
  color: var(--c-bg);
  transform: translateY(-2px);
}

.grid {
  display: grid;
  gap: var(--space-4);
}

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

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

.image-frame {
  position: relative;
  overflow: hidden;
  border-radius: 6px;
  border: 1px solid var(--c-border);
  background: linear-gradient(135deg, rgba(11, 19, 43, 0.9), rgba(10, 25, 47, 0.4));
}

.image-placeholder {
  display: grid;
  place-items: center;
  min-height: 240px;
  width: 100%;
  color: var(--c-gray);
  font-size: 14px;
  text-align: center;
  padding: var(--space-4);
  background-color: var(--c-bg-deep);
  background-image: linear-gradient(45deg, rgba(255, 215, 0, 0.08) 25%, transparent 25%), linear-gradient(-45deg, rgba(255, 215, 0, 0.08) 25%, transparent 25%), linear-gradient(45deg, transparent 75%, rgba(255, 215, 0, 0.08) 75%), linear-gradient(-45deg, transparent 75%, rgba(255, 215, 0, 0.08) 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 10px, 10px -10px, -10px 0;
}

@media (max-width: 960px) {
  :root {
    --header-height: 64px;
  }

  .header-main {
    min-height: 64px;
  }

  .header-meta {
    display: none;
  }

  .primary-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(340px, 86vw);
    background: var(--c-bg-deep);
    border-left: 1px solid rgba(255, 215, 0, 0.25);
    padding: 112px 32px 40px;
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 110;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    overflow-y: auto;
  }

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

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-list a {
    font-size: 18px;
    padding: 16px;
    border-bottom: 1px solid rgba(168, 178, 209, 0.1);
    display: block;
    border-radius: 2px;
  }

  .nav-list a::after {
    display: none;
  }

  .nav-list a:hover {
    background: rgba(255, 215, 0, 0.08);
    color: var(--c-gold);
  }

  .nav-list a[aria-current="page"] {
    background: rgba(255, 215, 0, 0.15);
    color: var(--c-gold);
    border-left: 3px solid var(--c-gold);
  }

  .nav-toggle {
    display: inline-flex;
    position: relative;
    z-index: 120;
  }

  .nav-toggle[aria-expanded="true"] {
    border-color: var(--c-gold);
    background: rgba(10, 25, 47, 0.95);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-5);
  }

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

@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

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

  .footer-inner {
    padding: var(--space-5) var(--gutter) var(--space-4);
  }

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

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

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}