/* ===== Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
}
body {
  font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #FFFFFF;
  background-color: #0A1F44;
  -webkit-font-smoothing: antialiased;
}
img {
  display: block;
  max-width: 100%;
}
a {
  color: inherit;
  text-decoration: none;
}
ul,
ol {
  list-style: none;
}
button {
  font: inherit;
  background: none;
  border: none;
  cursor: pointer;
  color: inherit;
  padding: 0;
}
address {
  font-style: normal;
}
h1, h2, h3, h4, h5, h6 {
  font-family: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  font-weight: 900;
  line-height: 1.3;
  color: #FFFFFF;
  letter-spacing: 0.02em;
}
p + p {
  margin-top: 1em;
}

/* ===== Variables ===== */
:root {
  --color-navy: #0A1F44;
  --color-content: #102A54;
  --color-green: #39FF14;
  --color-orange: #FF6A00;
  --color-white: #FFFFFF;
  --color-secondary: #B0B8C8;
  --color-border: #24406E;
  --color-gold: #FFD700;
  --color-teal: #0E5E5E;
  --color-wine: #6E1E2A;
  --font-heading: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
  --font-data: 'JetBrains Mono', 'Roboto Mono', 'Courier New', monospace;
  --container-max: 1280px;
  --container-pad: clamp(16px, 4vw, 48px);
  --header-h: 68px;
}

/* ===== Focus & Selection ===== */
:focus-visible {
  outline: 3px solid rgba(57, 255, 20, 0.75);
  outline-offset: 2px;
}
::selection {
  background: var(--color-green);
  color: var(--color-navy);
}
#main-content:focus {
  outline: none;
}

/* ===== Base Layout ===== */
main {
  display: block;
  min-height: 60vh;
  background: var(--color-navy);
}
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}
.section {
  padding: 64px 0;
}
.section-alt {
  background: var(--color-content);
}
.section-teal {
  background: var(--color-teal);
}
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.section-title {
  font-family: var(--font-heading);
  font-size: clamp(24px, 3vw, 36px);
  font-weight: 900;
  line-height: 1.3;
  color: var(--color-white);
}
.section-title::before {
  content: '';
  display: block;
  width: 42px;
  height: 4px;
  background: var(--color-green);
  margin-bottom: 12px;
}
.section-subtitle {
  color: var(--color-secondary);
  font-size: 14px;
  max-width: 440px;
}

.editorial-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}
@media (min-width: 768px) {
  .editorial-grid {
    grid-template-columns: 220px minmax(0, 1fr);
    gap: 40px;
  }
}
.editorial-aside {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-secondary);
  border-left: 3px solid var(--color-orange);
  padding-left: 16px;
  align-self: start;
}
.editorial-content {
  min-width: 0;
}

.page-head {
  padding: 56px 0 32px;
  position: relative;
}
.page-title {
  font-family: var(--font-heading);
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 900;
  line-height: 1.25;
  color: var(--color-white);
}
.page-title::before {
  content: '';
  display: block;
  width: 48px;
  height: 6px;
  background: var(--color-orange);
  margin-bottom: 20px;
  clip-path: polygon(0 0, 100% 0, 85% 100%, 0 100%);
}

.text-secondary {
  color: var(--color-secondary);
}
.data-text {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.04em;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}
.btn-primary {
  background: var(--color-green);
  color: var(--color-navy);
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}
.btn-primary:hover {
  background: var(--color-white);
}
.btn-ghost {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-white);
}
.btn-ghost:hover {
  border-color: var(--color-green);
  color: var(--color-green);
}
.btn-sm {
  padding: 8px 18px;
  font-size: 13px;
}

/* ===== Tags ===== */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.08em;
  border: 1px solid var(--color-border);
  color: var(--color-secondary);
  background: var(--color-content);
}
.tag-live {
  border-color: rgba(57, 255, 20, 0.4);
  color: var(--color-green);
}
.tag-live::before {
  content: '';
  width: 5px;
  height: 5px;
  background: var(--color-green);
  border-radius: 50%;
  animation: status-pulse 1.6s ease-in-out infinite;
}

/* ===== Image Frame ===== */
.img-frame {
  position: relative;
  background: var(--color-content);
  border: 1px solid var(--color-border);
  clip-path: polygon(0 0, 100% 0, calc(100% - 16px) 100%, 0 100%);
  padding: 16px;
}
.img-frame > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.img-frame::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 24%;
  height: 4px;
  background: var(--color-orange);
}
.img-frame[data-ratio="wide"] {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  padding: 0;
}
.img-frame[data-ratio="wide"]::before {
  content: '';
  display: block;
  padding-top: 56.25%;
}

/* ===== Breadcrumb ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--color-secondary);
  margin-bottom: 24px;
}
.breadcrumb-link {
  color: var(--color-secondary);
  transition: color 0.2s;
}
.breadcrumb-link:hover {
  color: var(--color-green);
}
.breadcrumb-sep {
  color: var(--color-orange);
}
.breadcrumb-current {
  color: var(--color-white);
  font-weight: 600;
}

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-navy);
  border-bottom: 1px solid var(--color-border);
}
.site-header::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 180px;
  height: 3px;
  background: var(--color-orange);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 100%, 0 100%);
  z-index: 3;
}
.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 0;
  height: 3px;
  background: var(--color-green);
  z-index: 5;
}
.skip-link {
  position: absolute;
  top: -60px;
  left: 12px;
  z-index: 200;
  background: var(--color-green);
  color: var(--color-navy);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 13px;
  padding: 10px 16px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
  transition: top 0.3s ease;
}
.skip-link:focus-visible {
  top: 8px;
}
.header-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
  min-height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  position: relative;
  z-index: 2;
}

/* Brand */
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-data);
  font-weight: 900;
  font-size: 20px;
  line-height: 1.2;
  color: var(--color-navy);
  background: linear-gradient(135deg, var(--color-green) 58%, var(--color-orange) 58%);
  padding: 4px 9px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}
.brand-name {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 19px;
  letter-spacing: 0.08em;
  color: var(--color-white);
  white-space: nowrap;
}
.brand-sub {
  font-family: var(--font-data);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.22em;
  color: var(--color-secondary);
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
}
.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}
.nav-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 13px;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-secondary);
  transition: color 0.2s ease, background 0.2s ease;
  white-space: nowrap;
}
.nav-link:hover {
  color: var(--color-white);
  background: rgba(57, 255, 20, 0.06);
}
.nav-index {
  font-family: var(--font-data);
  font-size: 10px;
  color: var(--color-green);
  opacity: 0.8;
}
.nav-link[aria-current="page"] {
  color: var(--color-white);
  background: var(--color-content);
  clip-path: polygon(0 0, 100% 0, calc(100% - 8px) 100%, 0 100%);
}
.nav-link[aria-current="page"]::after {
  content: '';
  position: absolute;
  left: 13px;
  right: 13px;
  bottom: 3px;
  height: 2px;
  background: var(--color-green);
}
.nav-link[aria-current="page"] .nav-index {
  opacity: 1;
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.search-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--color-border);
  background: var(--color-content);
  color: var(--color-white);
  transition: border-color 0.2s ease, background 0.2s ease;
}
.search-btn:hover {
  border-color: var(--color-green);
  background: rgba(57, 255, 20, 0.08);
}
.search-icon {
  position: relative;
  display: inline-block;
  width: 16px;
  height: 16px;
}
.search-icon::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 10px;
  height: 10px;
  border: 2px solid currentColor;
  border-radius: 50%;
}
.search-icon::after {
  content: '';
  position: absolute;
  right: 0;
  bottom: 0;
  width: 6px;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transform: rotate(45deg);
  transform-origin: right center;
}

/* Status Light */
.status-light {
  display: flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--color-border);
  background: var(--color-content);
  padding: 5px 10px;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--color-secondary);
}
.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--color-green);
  animation: status-pulse 1.6s ease-in-out infinite;
}
@keyframes status-pulse {
  0%, 100% {
    opacity: 1;
    box-shadow: 0 0 0 0 rgba(57, 255, 20, 0.6);
  }
  50% {
    opacity: 0.6;
    box-shadow: 0 0 0 6px rgba(57, 255, 20, 0);
  }
}

/* Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  padding: 9px;
  border: 1px solid var(--color-border);
  background: var(--color-content);
}
.nav-toggle-line {
  display: block;
  height: 2px;
  background: var(--color-white);
  transition: transform 0.3s ease, opacity 0.3s ease;
}
.nav-toggle.is-active .nav-toggle-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.is-active .nav-toggle-line:nth-child(2) {
  opacity: 0;
}
.nav-toggle.is-active .nav-toggle-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ===== Mobile Nav ===== */
@media (max-width: 900px) {
  .nav-toggle {
    display: flex;
  }
  .site-nav {
    display: block;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-navy);
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.35);
    transition: max-height 0.35s ease, visibility 0s 0.35s;
  }
  .site-nav[data-open] {
    max-height: 560px;
    visibility: visible;
    box-shadow: inset 0 -3px 0 var(--color-orange), 0 24px 48px rgba(0, 0, 0, 0.35);
    transition: max-height 0.35s ease, visibility 0s;
  }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    padding: 8px var(--container-pad) 20px;
  }
  .nav-item {
    width: 100%;
  }
  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 14px 4px;
    border-bottom: 1px solid var(--color-border);
    font-size: 15px;
  }
  .nav-link[aria-current="page"] {
    clip-path: polygon(0 0, 100% 0, calc(100% - 12px) 100%, 0 100%);
  }
  .nav-link[aria-current="page"]::after {
    left: 4px;
    right: auto;
    width: 32px;
  }
}

@media (max-width: 640px) {
  .search-btn {
    display: none;
  }
  .status-text {
    display: none;
  }
  .status-light {
    padding: 5px 8px;
  }
  .brand-sub {
    display: none;
  }
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-navy);
  margin-top: 72px;
}

/* Contact Strip */
.footer-contact-strip {
  background: var(--color-wine);
  position: relative;
  overflow: hidden;
}
.footer-contact-strip::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: var(--color-orange);
}
.footer-contact-strip::after {
  content: '';
  position: absolute;
  right: -40px;
  top: -80px;
  width: 220px;
  height: 220px;
  background: rgba(255, 255, 255, 0.04);
  transform: rotate(24deg);
  pointer-events: none;
}
.contact-strip-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 20px var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px 32px;
  flex-wrap: wrap;
  position: relative;
  z-index: 1;
}
.contact-note {
  font-size: 13px;
  color: rgba(255, 255, 255, 0.86);
  max-width: 600px;
}
.contact-links {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: wrap;
}
.contact-email {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-white);
  padding: 6px 12px;
  background: rgba(0, 0, 0, 0.18);
  border-left: 3px solid var(--color-green);
}
.contact-dash {
  color: rgba(255, 255, 255, 0.4);
  font-family: var(--font-data);
}
.contact-phone {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--color-white);
  letter-spacing: 0.06em;
}

/* Footer Main */
.footer-main {
  background: var(--color-navy);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.2fr 1fr;
  gap: clamp(24px, 4vw, 48px);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 48px var(--container-pad) 36px;
}
.footer-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.footer-brand-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-data);
  font-weight: 900;
  font-size: 18px;
  color: var(--color-navy);
  background: linear-gradient(135deg, var(--color-green) 58%, var(--color-orange) 58%);
  padding: 3px 8px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 6px) 100%, 0 100%);
}
.footer-brand-name {
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: 20px;
  letter-spacing: 0.08em;
  color: var(--color-white);
}
.footer-tagline {
  margin-top: 10px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.2em;
  color: var(--color-green);
}
.footer-trust {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--color-secondary);
  max-width: 380px;
}
.footer-col-title {
  font-family: var(--font-heading);
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 0.1em;
  color: var(--color-white);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.footer-col-title::before {
  content: '';
  width: 16px;
  height: 2px;
  background: var(--color-orange);
  flex-shrink: 0;
}
.footer-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.footer-list a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--color-secondary);
  padding: 5px 0;
  transition: color 0.2s ease;
}
.footer-list a::before {
  content: '→';
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--color-orange);
  opacity: 0;
  transform: translateX(-6px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}
.footer-list a:hover {
  color: var(--color-green);
}
.footer-list a:hover::before {
  opacity: 1;
  transform: translateX(0);
}

/* Footer Address */
.footer-address {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.footer-addr-line {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--color-border);
}
.footer-addr-label {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--color-orange);
}
.footer-addr-value {
  font-size: 13px;
  color: var(--color-white);
  line-height: 1.5;
  word-break: break-all;
}

/* Footer Bottom */
.footer-bottom {
  border-top: 1px solid var(--color-border);
  background: var(--color-content);
}
.footer-bottom-inner {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 16px var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  flex-wrap: wrap;
}
.footer-copyright,
.footer-icp {
  font-family: var(--font-data);
  font-size: 12px;
  color: var(--color-secondary);
  letter-spacing: 0.04em;
}
.footer-icp {
  color: #7A86A0;
}

/* Back to Top */
.back-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 90;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-green);
  color: var(--color-navy);
  clip-path: polygon(0 0, 100% 0, 100% 100%, 14% 100%, 0 86%);
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0s 0.3s, background 0.2s ease;
}
.back-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
  transition: opacity 0.3s ease, transform 0.3s ease, visibility 0s, background 0.2s ease;
}
.back-top:hover {
  background: var(--color-orange);
}
.back-top-arrow {
  font-size: 18px;
  font-weight: 900;
  line-height: 1;
  transform: translateY(-1px);
}

/* ===== Scroll Reveal ===== */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.js [data-reveal][data-revealed] {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Footer Responsive ===== */
@media (max-width: 900px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}
@media (max-width: 600px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .contact-strip-inner {
    flex-direction: column;
    align-items: flex-start;
  }
  .back-top {
    right: 16px;
    bottom: 16px;
    width: 44px;
    height: 44px;
  }
}

/* ===== Reduced Motion ===== */
@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;
  }
  .js [data-reveal],
  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}