/* ==========================================================================
   亚博线上 共享样式 /assets/site.css
   ========================================================================== */

/* ---------- Reset & Variables ---------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

:root {
  --color-bg: #0B0F14;
  --color-bg-panel: #0F1926;
  --color-bg-elevated: #131C2C;
  --color-primary: #00F5A0;
  --color-secondary: #00E5FF;
  --color-tertiary: #7A5CFF;
  --color-danger: #FF3D5F;
  --color-warning: #FFB300;
  --color-text: #E6EDF3;
  --color-text-muted: #9AA7B4;
  --font-headline: Impact, 'Archivo Black', 'Arial Black', sans-serif;
  --font-body: 'IBM Plex Mono', 'Space Mono', 'Courier New', monospace;
  --font-data: 'Orbitron', 'Oswald', 'Arial Narrow', 'Arial', sans-serif;
  --container-width: 1280px;
  --space-xs: 0.375rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 4rem;
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --transition-base: 0.3s ease;
  --header-height: 76px;
  --status-height: 34px;
}

/* ---------- Base ---------- */
body {
  min-height: 100vh;
  background-color: var(--color-bg);
  background-image:
    linear-gradient(rgba(0, 245, 160, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 245, 160, 0.025) 1px, transparent 1px);
  background-size: 32px 32px;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.75;
  overflow-x: hidden;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.05) 0px,
    rgba(0, 0, 0, 0.05) 1px,
    transparent 1px,
    transparent 4px
  );
  pointer-events: none;
  z-index: 9990;
}

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

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color 0.25s ease;
}

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

ul,
ol {
  list-style: none;
}

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

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-headline);
  font-weight: 700;
  line-height: 1.15;
  color: var(--color-text);
}

h1 { font-size: clamp(2.4rem, 5vw, 4.2rem); }
h2 { font-size: clamp(1.8rem, 3vw, 2.8rem); }
h3 { font-size: clamp(1.15rem, 1.6vw, 1.6rem); }

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

::selection {
  background: rgba(0, 245, 160, 0.25);
  color: var(--color-text);
}

#main-content:focus {
  outline: none;
}

/* ---------- Layout ---------- */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding-block: var(--space-xl);
}

.section-header {
  margin-bottom: var(--space-lg);
  border-left: 3px solid var(--color-primary);
  padding-left: var(--space-md);
}

.section-title {
  font-size: clamp(1.4rem, 2.4vw, 2rem);
  letter-spacing: 0.02em;
}

.section-subtitle {
  margin-top: var(--space-xs);
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: var(--space-lg);
}

.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: 1024px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }
}

/* ---------- Utility ---------- */
.text-muted {
  color: var(--color-text-muted);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-tertiary);
  margin-bottom: var(--space-xs);
}

.data-label {
  font-family: var(--font-data);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.data-value {
  font-family: var(--font-data);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-primary);
  letter-spacing: 0.05em;
}

.divider {
  height: 1px;
  background: linear-gradient(90deg, rgba(0, 245, 160, 0.3), rgba(0, 229, 255, 0.3), transparent);
  border: none;
  margin: var(--space-lg) 0;
}

/* ---------- Skip Link ---------- */
.skip-link {
  position: fixed;
  top: -100px;
  left: var(--space-md);
  z-index: 3000;
  background: var(--color-primary);
  color: var(--color-bg);
  padding: 0.625rem 1.25rem;
  font-family: var(--font-body);
  font-weight: 700;
  text-decoration: none;
  font-size: 0.875rem;
  border-radius: var(--radius-sm);
  transition: top 0.3s ease;
}

.skip-link:focus {
  top: var(--space-sm);
}

/* ---------- Scroll Progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 2px;
  width: 0%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), var(--color-tertiary));
  z-index: 3000;
  pointer-events: none;
  transition: width 0.08s linear;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(11, 15, 20, 0.92);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.status-bar {
  background: var(--color-bg-panel);
  border-bottom: 1px solid rgba(0, 229, 255, 0.18);
  height: var(--status-height);
}

.status-inner {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  height: 100%;
  font-family: var(--font-data);
  font-size: 0.6875rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
}

.status-version,
.status-round {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.status-label {
  color: var(--color-text-muted);
  font-weight: 400;
}

.status-value {
  color: var(--color-primary);
  font-weight: 700;
}

.status-round .status-value {
  color: var(--color-secondary);
}

.status-round {
  text-decoration: none;
  transition: opacity 0.25s ease;
}

.status-round:hover {
  opacity: 0.8;
}

.status-divider {
  width: 1px;
  height: 12px;
  background: rgba(0, 229, 255, 0.3);
  flex-shrink: 0;
}

.status-arrow {
  font-family: var(--font-body);
  color: var(--color-primary);
  font-size: 0.8125rem;
}

.header-main {
  border-bottom: 1px solid rgba(0, 245, 160, 0.12);
  position: relative;
}

.header-main::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 96%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(0, 245, 160, 0.45), rgba(0, 229, 255, 0.45), transparent);
  pointer-events: none;
}

.header-inner {
  display: flex;
  align-items: center;
  height: var(--header-height);
  gap: var(--space-lg);
}

/* ---------- Brand ---------- */
.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  flex-shrink: 0;
}

.brand-mark {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-bg);
  font-family: var(--font-data);
  font-weight: 700;
  font-size: 0.875rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  clip-path: polygon(0 0, 100% 0, 100% 72%, 68% 100%, 0 100%);
  flex-shrink: 0;
  letter-spacing: 0.02em;
}

.brand-name {
  font-family: var(--font-data);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--color-text);
  text-transform: uppercase;
}

.brand:hover .brand-name {
  color: var(--color-primary);
}

/* ---------- Navigation ---------- */
.site-nav {
  margin-left: auto;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--space-xs);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.625rem 0.75rem;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: 0.04em;
  position: relative;
  border-radius: var(--radius-sm);
  transition: color 0.25s ease, background 0.25s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0.75rem;
  right: 0.75rem;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s ease;
}

.nav-link:hover {
  color: var(--color-primary);
}

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

.nav-link[aria-current="page"] {
  color: var(--color-primary);
  background: rgba(0, 245, 160, 0.05);
}

.nav-index {
  font-family: var(--font-data);
  font-size: 0.625rem;
  font-weight: 500;
  color: var(--color-tertiary);
  letter-spacing: 0.1em;
}

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

/* ---------- Nav Toggle ---------- */
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  background: transparent;
  border: 1px solid rgba(0, 245, 160, 0.3);
  border-radius: var(--radius-sm);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  flex-shrink: 0;
  transition: border-color 0.25s ease;
}

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

.toggle-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-primary);
  border-radius: 1px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  background: #070A0E;
  border-top: 2px solid rgba(0, 245, 160, 0.18);
  margin-top: var(--space-xl);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 120px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary), transparent);
}

.footer-top {
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(280px, 1.4fr) 1fr 1fr 1.2fr;
  gap: var(--space-lg);
}

.footer-col {
  min-width: 0;
}

.footer-brand .brand {
  margin-bottom: var(--space-md);
}

.footer-desc {
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.footer-trust {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-data);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: rgba(0, 245, 160, 0.06);
  border: 1px solid rgba(0, 245, 160, 0.15);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
}

.footer-heading {
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-secondary);
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 1px solid rgba(0, 229, 255, 0.15);
}

.footer-list li {
  margin-bottom: var(--space-xs);
  font-size: 0.8125rem;
  line-height: 1.5;
}

.footer-list a {
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color 0.25s ease, padding-left 0.25s ease;
}

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

.footer-contact-list li {
  margin-bottom: var(--space-sm);
}

.contact-label {
  display: block;
  font-family: var(--font-data);
  font-size: 0.625rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-tertiary);
  margin-bottom: 2px;
}

.contact-value {
  color: var(--color-text);
  font-size: 0.8125rem;
  word-break: break-all;
}

.footer-bottom {
  border-top: 1px solid rgba(0, 229, 255, 0.12);
  padding: var(--space-md) 0;
}

.footer-bottom-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.footer-slogan {
  font-family: var(--font-data);
  letter-spacing: 0.18em;
  font-size: 0.6875rem;
  color: rgba(0, 245, 160, 0.6);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-decoration: none;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.3s ease, border-color 0.3s ease, color 0.3s ease, transform 0.2s ease;
  background: transparent;
  color: var(--color-text);
}

.btn:hover {
  transform: translateY(-1px);
}

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

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
  border-color: var(--color-primary);
}

.btn-primary:hover {
  background: rgba(0, 245, 160, 0.85);
  color: var(--color-bg);
}

.btn-outline {
  border-color: var(--color-secondary);
  color: var(--color-secondary);
}

.btn-outline:hover {
  background: rgba(0, 229, 255, 0.1);
  color: var(--color-secondary);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  padding: var(--space-md) 0;
  font-size: 0.8125rem;
  font-family: var(--font-body);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  margin: 0;
  padding: 0;
  list-style: none;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  color: var(--color-text-muted);
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "/";
  color: var(--color-text-muted);
  opacity: 0.5;
}

.breadcrumb-link {
  color: var(--color-text-muted);
  text-decoration: none;
}

.breadcrumb-link:hover {
  color: var(--color-primary);
}

.breadcrumb-item[aria-current="page"] {
  color: var(--color-primary);
}

/* ---------- Card ---------- */
.card {
  background: var(--color-bg-panel);
  border: 1px solid rgba(0, 229, 255, 0.08);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  position: relative;
  transition: border-color 0.3s ease, background 0.3s ease;
}

.card:hover {
  border-color: rgba(0, 245, 160, 0.2);
  background: var(--color-bg-elevated);
}

.card-header {
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-sm);
  border-bottom: 1px solid rgba(0, 229, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}

.card-title {
  font-family: var(--font-data);
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--color-text);
  text-transform: uppercase;
}

.card-body {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ---------- Tags ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.55rem;
  font-family: var(--font-data);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  line-height: 1.5;
}

.tag-red {
  color: var(--color-danger);
  border-color: rgba(255, 61, 95, 0.35);
  background: rgba(255, 61, 95, 0.08);
}

.tag-yellow {
  color: var(--color-warning);
  border-color: rgba(255, 179, 0, 0.35);
  background: rgba(255, 179, 0, 0.08);
}

.tag-purple {
  color: var(--color-tertiary);
  border-color: rgba(122, 92, 255, 0.35);
  background: rgba(122, 92, 255, 0.08);
}

.tag-green {
  color: var(--color-primary);
  border-color: rgba(0, 245, 160, 0.35);
  background: rgba(0, 245, 160, 0.07);
}

.tag-blue {
  color: var(--color-secondary);
  border-color: rgba(0, 229, 255, 0.35);
  background: rgba(0, 229, 255, 0.07);
}

/* ---------- Pulse Dot ---------- */
.pulse-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-primary);
  flex-shrink: 0;
  position: relative;
}

.pulse-dot::after {
  content: "";
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  border: 1px solid var(--color-primary);
  animation: pulse-ring 1.6s cubic-bezier(0.2, 0.6, 0.4, 1) infinite;
}

@keyframes pulse-ring {
  0% {
    transform: scale(0.6);
    opacity: 0.9;
  }
  80%,
  100% {
    transform: scale(1.6);
    opacity: 0;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg) var(--space-md);
  }

  .header-inner {
    gap: var(--space-md);
  }

  .nav-list {
    gap: 2px;
  }

  .nav-link {
    padding: 0.5rem 0.6rem;
    font-size: 0.75rem;
  }

  .nav-index {
    display: none;
  }
}

@media (max-width: 767px) {
  body {
    font-size: 0.875rem;
  }

  .container {
    padding: 0 var(--space-md);
  }

  .header-inner {
    height: 64px;
  }

  .brand-name {
    font-size: 0.875rem;
  }

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

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(15, 25, 38, 0.98);
    border-bottom: 1px solid rgba(0, 245, 160, 0.3);
    box-shadow: 0 16px 32px rgba(0, 0, 0, 0.5);
    display: none;
    margin: 0;
    padding: var(--space-sm) var(--space-md) var(--space-md);
  }

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

  .nav-list {
    flex-direction: column;
    gap: 0;
  }

  .nav-item {
    border-bottom: 1px solid rgba(0, 229, 255, 0.08);
  }

  .nav-item:last-child {
    border-bottom: none;
  }

  .nav-link {
    width: 100%;
    justify-content: space-between;
    padding: 0.875rem 0.5rem;
    font-size: 0.875rem;
  }

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

  .nav-link[aria-current="page"] {
    background: rgba(0, 245, 160, 0.06);
    border-left: 2px solid var(--color-primary);
  }

  .nav-index {
    display: inline;
    font-size: 0.625rem;
  }

  .status-inner {
    font-size: 0.625rem;
    letter-spacing: 0.12em;
    gap: var(--space-sm);
  }

  .status-divider {
    margin: 0 2px;
  }

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

  .footer-bottom-inner {
    flex-direction: column;
    text-align: center;
    gap: var(--space-xs);
  }
}

@media (max-width: 420px) {
  .brand-name {
    display: none;
  }

  .status-round .status-label {
    display: none;
  }

  .status-version .status-label {
    display: none;
  }
}

/* ---------- 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;
  }

  .pulse-dot::after {
    display: none;
  }

  .scroll-progress {
    display: none;
  }
}