/* ============================================
   博狗网APP官方主站 — 共享样式 /assets/site.css
   设计意象：赛博竞技 · 控制台 · 金色仪表
   ============================================ */

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

/* ---------- CSS Variables ---------- */
:root {
  --color-primary: #0A1F44;
  --color-primary-light: #1B3A6B;
  --color-accent: #E8C547;
  --color-bg: #0D1B2A;
  --color-surface: #122A3E;
  --color-text: #F2F5FA;
  --color-text-dim: #A0AAB5;
  --color-slate: #6C7A89;
  --color-olive: #7A8B6F;
  --color-terracotta: #C77B5A;
  --color-cream: #F5EDD6;
  --color-border: rgba(255, 255, 255, 0.12);

  --font-display: 'Rajdhani', 'HarmonyOS Sans SC', 'PingFang SC', sans-serif;
  --font-body: 'Inter', 'HarmonyOS Sans SC', 'PingFang SC', sans-serif;

  --radius-pill: 999px;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;

  --container-max: 1280px;
  --shadow-panel: 0 8px 32px rgba(0, 0, 0, 0.35);
  --shadow-lift: 0 16px 40px rgba(0, 0, 0, 0.42);
  --transition-base: 0.25s ease;
}

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

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background:
    radial-gradient(ellipse 75% 55% at 15% -5%, #102A45 0%, transparent 60%),
    radial-gradient(ellipse 55% 45% at 95% 15%, #0F2440 0%, transparent 55%),
    linear-gradient(160deg, #0D1B2A 0%, #080F1E 65%, #060B16 100%);
  background-attachment: fixed;
  min-width: 320px;
  -webkit-font-smoothing: antialiased;
}

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

p {
  color: var(--color-text-dim);
}

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

ul, ol {
  list-style: none;
}

a {
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Container & Layout ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: 24px;
}

.section {
  padding: 80px 0;
}

.section--tight {
  padding: 40px 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}

.grid__item {
  min-width: 0;
}

.grid--cols-2 > * {
  grid-column: span 6;
}

.grid--cols-3 > * {
  grid-column: span 4;
}

.grid--cols-4 > * {
  grid-column: span 3;
}

.divider {
  height: 1px;
  border: none;
  background: linear-gradient(90deg, rgba(232, 197, 71, 0.4), rgba(255, 255, 255, 0.08) 40%, transparent 80%);
  margin: 40px 0;
}

/* ---------- Section Heading ---------- */
.section-head {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 36px;
}

.section-note {
  writing-mode: vertical-rl;
  transform: rotate(180deg);
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.32em;
  text-transform: uppercase;
  color: var(--color-accent);
  padding: 4px 0;
  flex: none;
}

.section-kicker {
  display: block;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-slate);
  margin-bottom: 6px;
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  letter-spacing: 0.02em;
  margin-bottom: 0;
}

.section-title::after {
  content: '';
  display: block;
  width: 64px;
  height: 3px;
  margin-top: 12px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  border-radius: 3px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  line-height: 1.2;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), color var(--transition-base);
}

.btn--gold {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #E8C547 0%, #D4A837 100%);
  color: #0A1F44;
  box-shadow: 0 4px 18px rgba(232, 197, 71, 0.22);
}

.btn--gold::after {
  content: '';
  position: absolute;
  top: 0;
  left: -150%;
  width: 55%;
  height: 100%;
  background: linear-gradient(115deg, transparent 0%, rgba(255, 255, 255, 0.65) 50%, transparent 100%);
  transform: skewX(-20deg);
  animation: gold-sweep 4s ease-in-out infinite;
}

.btn--gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(232, 197, 71, 0.4);
  color: #0A1F44;
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn--ghost:hover {
  border-color: rgba(232, 197, 71, 0.5);
  color: var(--color-accent);
  background: rgba(232, 197, 71, 0.06);
}

.btn--small {
  padding: 8px 16px;
  font-size: 0.82rem;
}

@keyframes gold-sweep {
  0%, 55% { left: -150%; }
  85%, 100% { left: 150%; }
}

/* ---------- Progress Bar ---------- */
.progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  z-index: 9999;
  background: linear-gradient(90deg, var(--color-accent), var(--color-cream));
  box-shadow: 0 0 14px rgba(232, 197, 71, 0.55);
  border-radius: 0 3px 3px 0;
  pointer-events: none;
}

/* ---------- Skip Link ---------- */
.site-skip {
  position: absolute;
  top: -100%;
  left: 16px;
  z-index: 9998;
  padding: 12px 20px;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  background: var(--color-accent);
  color: var(--color-primary);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  transition: top 0.2s ease;
}

.site-skip:hover {
  color: var(--color-primary);
}

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

/* ---------- Announcement ---------- */
.site-announce {
  background:
    linear-gradient(90deg, rgba(232, 197, 71, 0.1), transparent 45%),
    linear-gradient(135deg, var(--color-primary) 0%, var(--color-bg) 100%);
  border-bottom: 1px solid rgba(232, 197, 71, 0.28);
  font-size: 0.84rem;
  position: relative;
  z-index: 200;
}

.site-announce__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  min-height: 36px;
  padding-top: 6px;
  padding-bottom: 6px;
}

.announce-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 12px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, var(--color-accent), #D4A837);
  color: #0A1F44;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  white-space: nowrap;
  box-shadow: 0 0 16px rgba(232, 197, 71, 0.3);
}

.site-announce__text {
  margin: 0;
  font-size: 0.84rem;
  color: var(--color-text-dim);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 150;
  padding: 10px 0;
}

.site-header__inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 16px 10px 24px;
  border-radius: var(--radius-pill);
  background: linear-gradient(135deg, rgba(10, 31, 68, 0.94), rgba(13, 27, 42, 0.92));
  border: 1px solid rgba(232, 197, 71, 0.22);
  box-shadow: var(--shadow-panel), inset 0 1px 0 rgba(255, 255, 255, 0.06);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.site-header__inner::before {
  content: '';
  position: absolute;
  top: -1px;
  left: 28px;
  width: 72px;
  height: 2px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-accent), transparent);
  pointer-events: none;
}

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

.site-brand--footer {
  margin-bottom: 16px;
}

.site-brand__mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  border: 1px solid rgba(232, 197, 71, 0.5);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-accent);
  clip-path: polygon(0 0, 88% 0, 100% 12%, 100% 100%, 12% 100%, 0 88%);
  box-shadow: 0 4px 14px rgba(232, 197, 71, 0.12);
}

.site-brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.site-brand__name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  color: var(--color-text);
  white-space: nowrap;
}

.site-brand__sub {
  font-family: var(--font-display);
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.36em;
  text-transform: uppercase;
  color: var(--color-accent);
  white-space: nowrap;
}

.site-brand:hover .site-brand__name {
  color: var(--color-accent);
}

/* ---------- Navigation ---------- */
.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 4px;
}

.site-nav__link {
  display: block;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.04em;
  color: var(--color-text);
  transition: background var(--transition-base), color var(--transition-base), box-shadow var(--transition-base);
}

.site-nav__link:hover {
  background: rgba(232, 197, 71, 0.12);
  color: var(--color-accent);
}

.site-nav__link[aria-current="page"] {
  background: linear-gradient(135deg, var(--color-accent), #D4A837);
  color: #0A1F44;
  box-shadow: 0 3px 14px rgba(232, 197, 71, 0.28);
  font-weight: 700;
}

.site-nav__link[aria-current="page"]:hover {
  color: #0A1F44;
}

/* ---------- Header CTA ---------- */
.site-cta {
  margin-left: 10px;
  padding: 10px 20px;
  font-size: 0.9rem;
}

/* ---------- Mobile Toggle ---------- */
.site-nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius-md);
  background: transparent;
  border: 1px solid var(--color-border);
  cursor: pointer;
  flex-shrink: 0;
  transition: border-color var(--transition-base);
}

.site-nav-toggle:hover {
  border-color: rgba(232, 197, 71, 0.5);
}

.site-nav-toggle__bar {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.site-nav-toggle.is-active .site-nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-nav-toggle.is-active .site-nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.site-nav-toggle.is-active .site-nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Footer ---------- */
.site-footer {
  position: relative;
  margin-top: 80px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.016) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.016) 1px, transparent 1px),
    linear-gradient(180deg, rgba(6, 11, 22, 0.95), rgba(10, 31, 68, 0.9));
  background-size: 36px 36px, 36px 36px, auto;
  border-top: 1px solid rgba(232, 197, 71, 0.25);
}

.site-footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  height: 3px;
  width: 100%;
  background: linear-gradient(90deg, var(--color-accent), rgba(232, 197, 71, 0.2) 60%, transparent);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.6fr;
  gap: 40px;
  padding: 64px 0 48px;
}

.site-footer__brand {
  max-width: 360px;
}

.site-footer__intro {
  margin: 0 0 16px;
  font-size: 0.88rem;
  color: var(--color-text-dim);
  line-height: 1.7;
}

.site-footer__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.site-footer__stat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  font-size: 0.76rem;
  color: var(--color-text-dim);
}

.site-footer__col {
  min-width: 0;
}

.site-footer__title {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-text);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.site-footer__title::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 36px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}

.site-footer__links {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.site-footer__links a {
  font-size: 0.88rem;
  color: var(--color-text-dim);
  transition: color var(--transition-base), padding-left var(--transition-base);
}

.site-footer__links a:hover {
  color: var(--color-accent);
  padding-left: 6px;
}

.site-footer__contact-item {
  margin: 0 0 8px;
  font-size: 0.85rem;
  color: var(--color-text-dim);
  line-height: 1.5;
}

.site-footer__contact-item strong {
  color: var(--color-text);
  font-weight: 600;
}

.site-footer__contact-note {
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--color-border);
  font-size: 0.78rem;
  color: var(--color-slate);
}

.site-footer__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 20px 0;
  border-top: 1px solid var(--color-border);
}

.site-footer__copyright,
.site-footer__icp {
  margin: 0;
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

.site-footer__icp {
  color: var(--color-slate);
}

/* ---------- Status Dot ---------- */
.status-dot {
  display: inline-block;
  flex-shrink: 0;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-slate);
}

.status-dot--live {
  background: var(--color-accent);
  box-shadow: 0 0 10px rgba(232, 197, 71, 0.7);
  animation: dot-pulse 2s ease-in-out infinite;
}

@keyframes dot-pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.35; transform: scale(0.8); }
}

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  background: rgba(232, 197, 71, 0.12);
  border: 1px solid rgba(232, 197, 71, 0.4);
  color: var(--color-accent);
  white-space: nowrap;
}

.badge--olive {
  background: rgba(122, 139, 111, 0.14);
  border-color: rgba(122, 139, 111, 0.45);
  color: var(--color-olive);
}

.badge--terra {
  background: rgba(199, 123, 90, 0.14);
  border-color: rgba(199, 123, 90, 0.45);
  color: var(--color-terracotta);
}

/* ---------- Tags ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--color-border);
  color: var(--color-text-dim);
}

.tag::before {
  content: '#';
  color: var(--color-slate);
  font-weight: 400;
}

.tag--olive {
  color: var(--color-olive);
  border-color: rgba(122, 139, 111, 0.4);
  background: rgba(122, 139, 111, 0.08);
}

.tag--terra {
  color: var(--color-terracotta);
  border-color: rgba(199, 123, 90, 0.4);
  background: rgba(199, 123, 90, 0.08);
}

/* ---------- Cards & Panels ---------- */
.card {
  position: relative;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, var(--color-surface) 0%, rgba(13, 27, 42, 0.85) 100%);
  border: 1px solid var(--color-border);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  border-color: rgba(232, 197, 71, 0.35);
  box-shadow: var(--shadow-lift), 0 0 0 1px rgba(232, 197, 71, 0.12);
}

.card--feature {
  padding: 32px;
  border-left: 3px solid var(--color-accent);
}

.panel {
  position: relative;
  padding: 24px;
  border-radius: var(--radius-lg);
  background: linear-gradient(145deg, rgba(18, 42, 62, 0.88), rgba(10, 31, 68, 0.72));
  border: 1px solid var(--color-border);
}

.panel--accent-edge {
  border-top: 2px solid var(--color-accent);
}

/* ---------- Image Frame ---------- */
.image-frame {
  position: relative;
  display: block;
  border-radius: 16px;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  background: linear-gradient(145deg, var(--color-primary-light), var(--color-primary));
  border: 1px solid var(--color-border);
}

.image-frame::after {
  content: attr(data-label);
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 40px 16px 12px;
  background: linear-gradient(transparent, rgba(6, 11, 22, 0.88));
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--color-text);
  pointer-events: none;
}

.image-frame__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 24px;
  font-size: 0.83rem;
  color: var(--color-text-dim);
}

.breadcrumb__link {
  color: var(--color-text-dim);
}

.breadcrumb__link:hover {
  color: var(--color-accent);
}

.breadcrumb__sep {
  color: var(--color-slate);
  margin: 0 2px;
}

.breadcrumb__current {
  color: var(--color-text);
  font-weight: 600;
}

/* ---------- Reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal[data-revealed] {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 1200px) {
  .site-nav__link {
    padding: 8px 12px;
    font-size: 0.88rem;
  }

  .site-cta {
    padding: 9px 16px;
    font-size: 0.85rem;
  }

  .site-footer__grid {
    grid-template-columns: 2fr 1fr 1fr;
  }

  .site-footer__col:last-child {
    grid-column: span 3;
  }
}

@media (max-width: 1024px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .site-footer__col:last-child {
    grid-column: span 2;
  }

  .grid--cols-4 > * {
    grid-column: span 6;
  }
}

@media (max-width: 992px) {
  .site-header__inner {
    flex-wrap: wrap;
    border-radius: 18px;
    padding: 10px 14px;
  }

  .site-nav {
    display: none;
    flex-direction: column;
    width: 100%;
    align-items: stretch;
    gap: 4px;
    flex-basis: 100%;
    border-top: 1px solid var(--color-border);
    margin-top: 10px;
    padding-top: 12px;
  }

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

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    width: 100%;
  }

  .site-nav__link {
    text-align: center;
    padding: 12px 16px;
    border-radius: var(--radius-md);
  }

  .site-nav__link[aria-current="page"] {
    border-radius: var(--radius-md);
  }

  .site-cta {
    margin-left: 0;
    margin-top: 10px;
    width: 100%;
    justify-content: center;
  }

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

@media (max-width: 640px) {
  .container {
    padding-inline: 16px;
  }

  .section {
    padding: 56px 0;
  }

  .site-announce__inner {
    flex-wrap: wrap;
    gap: 6px 12px;
    padding-top: 8px;
    padding-bottom: 8px;
  }

  .site-announce__text {
    font-size: 0.78rem;
  }

  .site-header__inner {
    border-radius: 14px;
  }

  .site-brand__sub {
    letter-spacing: 0.2em;
  }

  .site-footer__grid {
    grid-template-columns: 1fr;
    padding: 40px 0 32px;
    gap: 28px;
  }

  .site-footer__col:last-child {
    grid-column: span 1;
  }

  .site-footer__brand {
    max-width: none;
  }

  .site-footer__bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    padding: 16px 0;
  }

  .grid--cols-2 > *,
  .grid--cols-3 > *,
  .grid--cols-4 > * {
    grid-column: span 12;
  }
}

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

  .reveal {
    opacity: 1;
    transform: none;
  }

  .btn--gold::after {
    display: none;
  }
}