/* ============================================================
   猫头鹰竞界 · Site Kit 共享样式
   猫头鹰体育APP官方频道 | goal-maotouying.com.cn
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 72px;
}

body {
  background: var(--bg-root);
  color: var(--text-body);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

ul,
ol {
  list-style: none;
}

/* ---------- Design Tokens ---------- */
:root {
  --bg-root: #070D1A;
  --bg-panel: #0D172A;
  --bg-elevate: #101E36;
  --line-track: #22324A;
  --accent-green: #C8F542;
  --accent-orange: #FF7A1A;
  --text-title: #F4F7FB;
  --text-body: #B7C1D4;
  --text-muted: #7A87A0;
  --accent-blue: #3FA7FF;
  --warn-yellow: #FFB020;
  --font-display: 'Anton', 'Roboto Condensed', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-body: 'Open Sans', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-data: 'JetBrains Mono', 'SFMono-Regular', 'Consolas', monospace;
  --rail-w: 220px;
  --content-max: 1120px;
  --radius: 4px;
  --transition: 130ms ease;
}

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  color: var(--text-title);
  line-height: 1.15;
  font-weight: 700;
  margin: 1.8em 0 0.5em;
}

h1 {
  font-size: clamp(2rem, 5vw, 4rem);
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2.4rem);
}

h3 {
  font-size: 1.3rem;
}

h4 {
  font-size: 1.1rem;
}

h1:first-child,
h2:first-child,
h3:first-child {
  margin-top: 0;
}

a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: color var(--transition), border-color var(--transition),
    background var(--transition), opacity var(--transition);
}

a:hover {
  color: var(--text-title);
}

/* ---------- Skip Link ---------- */
.skip-link {
  position: fixed;
  left: -999px;
  top: 0;
  z-index: 1200;
  background: var(--accent-green);
  color: var(--bg-root);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.8125rem;
  letter-spacing: 0.08em;
  padding: 10px 20px;
  border-radius: 0 0 var(--radius) 0;
}

.skip-link:focus {
  left: 0;
  outline: 3px solid var(--accent-blue);
  outline-offset: 0;
}

/* ---------- Reading Progress ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 900;
  pointer-events: none;
  background: transparent;
}

.scroll-progress__bar {
  display: block;
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent-green), var(--accent-blue));
  box-shadow: 0 0 8px rgba(63, 167, 255, 0.35);
}

/* ---------- Desktop Side Rail ---------- */
.site-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--rail-w);
  z-index: 200;
  display: flex;
  flex-direction: column;
  background: var(--bg-panel);
  border-right: 1px solid var(--line-track);
  padding: 24px 16px 20px;
  overflow-y: auto;
}

.site-rail::-webkit-scrollbar {
  width: 4px;
}

.site-rail::-webkit-scrollbar-thumb {
  background: var(--line-track);
}

/* ---------- Brand Lockup ---------- */
.brand-lockup {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text-title);
  text-decoration: none;
}

.brand-lockup:hover {
  color: var(--accent-green);
}

.brand-mark {
  position: relative;
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--line-track);
  border-radius: 50%;
  background: radial-gradient(
    circle at 40% 35%,
    rgba(200, 245, 66, 0.14),
    rgba(7, 13, 26, 0.92) 72%
  );
}

.brand-mark__eye {
  display: block;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid var(--accent-green);
  background: var(--bg-root);
  position: relative;
}

.brand-mark__eye::after {
  content: "";
  position: absolute;
  inset: 3px;
  border-radius: 50%;
  background: var(--accent-green);
}

.brand-lockup__text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: inherit;
}

.brand-sub {
  font-family: var(--font-data);
  font-size: 0.6rem;
  color: var(--text-muted);
  letter-spacing: 0.24em;
  text-transform: uppercase;
}

/* ---------- Rail Modules ---------- */
.rail-tagline {
  margin: 18px 0 20px;
  padding-left: 12px;
  border-left: 2px solid var(--accent-orange);
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.rail-nav {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  margin: 0 0 12px;
}

.rail-nav::-webkit-scrollbar {
  width: 4px;
}

.rail-nav::-webkit-scrollbar-thumb {
  background: var(--line-track);
}

.nav-track {
  display: flex;
  flex-direction: column;
}

.nav-item {
  margin: 0;
}

.nav-link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 10px 8px;
  color: var(--text-body);
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color var(--transition), border-color var(--transition),
    background var(--transition);
}

.nav-index {
  font-family: var(--font-data);
  font-size: 0.6875rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

.nav-link:hover {
  color: var(--text-title);
  background: rgba(63, 167, 255, 0.06);
  border-left-color: var(--accent-blue);
}

.nav-link:hover .nav-index {
  color: var(--accent-blue);
}

.nav-link[aria-current="page"] {
  color: var(--accent-green);
  background: rgba(200, 245, 66, 0.08);
  border-left-color: var(--accent-green);
}

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

/* ---------- Buttons ---------- */
.btn-accent {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background: var(--accent-orange);
  color: var(--bg-root);
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 12px 18px;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  transition: background var(--transition), color var(--transition),
    transform var(--transition), box-shadow var(--transition);
}

.btn-accent:hover {
  background: #ff8f3c;
  color: var(--bg-root);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(255, 122, 26, 0.22);
}

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

.btn-outline {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: transparent;
  color: var(--accent-green);
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 10px 18px;
  border: 1px solid var(--line-track);
  border-radius: var(--radius);
  cursor: pointer;
  text-decoration: none;
  transition: border-color var(--transition), color var(--transition),
    background var(--transition);
}

.btn-outline:hover {
  background: var(--accent-green);
  border-color: var(--accent-green);
  color: var(--bg-root);
}

.rail-cta {
  width: 100%;
}

.rail-status {
  margin-top: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--line-track);
  border-radius: var(--radius);
  background: var(--bg-root);
  font-family: var(--font-data);
  font-size: 0.6875rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.status-dot {
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-green);
  box-shadow: 0 0 6px rgba(200, 245, 66, 0.55);
}

/* ---------- Mobile Masthead & Drawer ---------- */
.masthead,
.drawer,
.drawer-backdrop {
  display: none;
}

@media (max-width: 960px) {
  .masthead {
    position: sticky;
    top: 0;
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    background: rgba(13, 23, 42, 0.96);
    -webkit-backdrop-filter: blur(8px);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--line-track);
    padding: 10px 16px;
  }

  .site-rail {
    display: none;
  }

  .brand-lockup--compact .brand-mark {
    width: 32px;
    height: 32px;
  }

  .brand-lockup--compact .brand-name {
    font-size: 0.95rem;
  }

  .nav-toggle {
    display: inline-flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 44px;
    height: 44px;
    padding: 12px 10px;
    background: transparent;
    border: 1px solid var(--line-track);
    border-radius: var(--radius);
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition);
  }

  .nav-toggle:hover {
    background: var(--bg-elevate);
    border-color: var(--accent-blue);
  }

  .nav-toggle__line {
    display: block;
    width: 100%;
    height: 2px;
    border-radius: 1px;
    background: var(--text-title);
    transition: transform var(--transition), opacity var(--transition);
  }

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

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

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

  .drawer-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    z-index: 270;
    background: rgba(7, 13, 26, 0.72);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
  }

  .drawer-backdrop[data-open] {
    opacity: 1;
    pointer-events: auto;
  }

  .drawer {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 290;
    width: min(300px, 85vw);
    display: flex;
    flex-direction: column;
    gap: 18px;
    background: var(--bg-panel);
    border-right: 1px solid var(--line-track);
    padding: 64px 20px 24px;
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform var(--transition);
  }

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

  .drawer::-webkit-scrollbar {
    width: 4px;
  }

  .drawer::-webkit-scrollbar-thumb {
    background: var(--line-track);
  }

  .drawer .rail-tagline {
    margin: 0 0 4px;
  }

  .nav-track--drawer .nav-link {
    padding: 13px 8px;
    font-size: 0.95rem;
  }

  .drawer-cta {
    width: 100%;
  }

  .drawer-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-data);
    font-size: 0.6875rem;
    color: var(--text-muted);
  }

  body.nav-open {
    overflow: hidden;
  }
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--bg-panel);
  border-top: 1px solid var(--line-track);
  color: var(--text-body);
  font-size: 0.875rem;
}

.footer-shell {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 52px 24px 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 0.9fr 1fr 1.25fr;
  gap: 40px;
}

.footer-panel--brand {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 14px;
}

.footer-heading {
  margin: 0 0 12px;
  padding-bottom: 8px;
  font-family: var(--font-data);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-green);
  border-bottom: 1px solid var(--line-track);
}

.footer-about {
  font-size: 0.8125rem;
  line-height: 1.75;
  margin: 0;
}

.footer-trust {
  font-size: 0.75rem;
  color: var(--text-muted);
  border-left: 2px solid var(--warn-yellow);
  padding-left: 10px;
  margin: 0;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-links a {
  display: inline-block;
  padding: 4px 0;
  color: var(--text-body);
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.footer-links a:hover {
  color: var(--accent-green);
  border-bottom-color: var(--accent-green);
}

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

.contact-label {
  display: block;
  font-family: var(--font-data);
  font-size: 0.625rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.footer-contact span:last-child {
  font-size: 0.8125rem;
  color: var(--text-title);
}

.footer-icp {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line-track);
  font-family: var(--font-data);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 6px 16px;
  margin-top: 40px;
  padding-top: 16px;
  border-top: 1px solid var(--line-track);
  font-family: var(--font-data);
  font-size: 0.6875rem;
  color: var(--text-muted);
}

.footer-legal-note {
  margin: 12px 0 0;
  text-align: center;
  font-size: 0.6875rem;
  color: var(--text-muted);
}

/* ---------- Page Shell ---------- */
#main-content {
  display: block;
  min-width: 0;
}

@media (min-width: 961px) {
  #main-content,
  .site-footer,
  .scroll-progress {
    margin-left: var(--rail-w);
  }

  .scroll-progress {
    left: 0;
  }
}

.page-shell {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: 36px 24px 72px;
}

/* ---------- Breadcrumb ---------- */
.breadcrumb-nav {
  margin-bottom: 28px;
  font-family: var(--font-data);
  font-size: 0.75rem;
  overflow: auto;
}

.breadcrumb-nav ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 2px;
}

.breadcrumb-nav li + li::before {
  content: "/";
  margin: 0 6px;
  color: var(--text-muted);
}

.breadcrumb-nav a {
  color: var(--accent-blue);
}

.breadcrumb-nav a:hover {
  color: var(--accent-green);
  text-decoration: underline;
}

.breadcrumb-nav [aria-current="page"] {
  color: var(--text-muted);
}

/* ---------- Prose ---------- */
.prose {
  max-width: 72ch;
}

.prose p {
  margin-bottom: 1.25em;
  line-height: 1.8;
}

.prose ul,
.prose ol {
  margin: 0 0 1.25em 1.5em;
}

.prose ul {
  list-style: square;
}

.prose ol {
  list-style: decimal;
}

.prose li {
  margin-bottom: 0.45em;
}

.prose a {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- Section Index & Frame Hero ---------- */
.section-index {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(3rem, 6vw, 4.5rem);
  font-weight: 600;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px var(--line-track);
  user-select: none;
}

.frame-hero {
  position: relative;
  background: var(--bg-panel);
  border: 1px solid var(--line-track);
  padding: clamp(24px, 5vw, 56px);
}

.frame-hero::before,
.frame-hero::after {
  content: "";
  position: absolute;
  width: 28px;
  height: 28px;
  border: 3px solid var(--accent-green);
  pointer-events: none;
}

.frame-hero::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.frame-hero::after {
  bottom: -1px;
  right: -1px;
  border-left: 0;
  border-top: 0;
}

/* ---------- Data Components ---------- */
.data-card {
  background: var(--bg-panel);
  border: 1px solid var(--line-track);
  border-radius: var(--radius);
  padding: 20px;
  transition: transform var(--transition), border-color var(--transition),
    box-shadow var(--transition);
}

.data-card:hover {
  transform: translateY(-2px);
  border-color: rgba(200, 245, 66, 0.35);
  box-shadow: 0 8px 24px rgba(7, 13, 26, 0.4);
}

.data-card--accent {
  border-left: 3px solid var(--accent-green);
}

.data-card--alert {
  border-left: 3px solid var(--accent-orange);
}

.metric-value {
  font-family: var(--font-data);
  font-size: clamp(1.5rem, 3vw, 2.25rem);
  font-weight: 600;
  line-height: 1.2;
  color: var(--accent-green);
}

.metric-value--orange {
  color: var(--accent-orange);
}

.metric-value--blue {
  color: var(--accent-blue);
}

.metric-label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-data);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.tag-label {
  display: inline-block;
  padding: 3px 8px;
  border: 1px solid rgba(255, 122, 26, 0.3);
  border-radius: 2px;
  background: rgba(255, 122, 26, 0.08);
  font-family: var(--font-data);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-orange);
}

.tag-label--green {
  color: var(--accent-green);
  border-color: rgba(200, 245, 66, 0.3);
  background: rgba(200, 245, 66, 0.08);
}

.tag-label--blue {
  color: var(--accent-blue);
  border-color: rgba(63, 167, 255, 0.3);
  background: rgba(63, 167, 255, 0.08);
}

/* ---------- Grids ---------- */
.grid-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.grid-asym {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 24px;
}

/* ---------- Image Stage ---------- */
.image-stage {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  background: var(--bg-panel);
  border: 1px solid var(--line-track);
}

.image-stage::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image: linear-gradient(rgba(200, 245, 66, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(200, 245, 66, 0.05) 1px, transparent 1px);
  background-size: 32px 32px;
}

.image-stage::after {
  content: "";
  display: block;
  padding-top: 56.25%;
}

.image-stage--wide::after {
  padding-top: 42.857%;
}

.image-stage--square::after {
  padding-top: 100%;
}

.image-stage--portrait::after {
  padding-top: 133.33%;
}

.image-stage img,
.image-stage video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 1;
}

/* ---------- Utilities ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- Focus & Motion ---------- */
:focus-visible {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

@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;
    transition-delay: 0s !important;
  }
}

/* ---------- Responsive Adjustments ---------- */
@media (max-width: 1023px) and (min-width: 641px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 960px) {
  .grid-asym {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .page-shell {
    padding: 24px 16px 56px;
  }

  .grid-pair {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}