/* ==========================================================
   利来体育CN官网 · 共享样式表
   File: /assets/site.css
   设计系统：深蓝数据中控台 / 切角Bento / 速度线与荧光实时语义
   ========================================================== */

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

/* ---------- 1. Design Tokens ---------- */
:root {
  --color-bg: #0A1930;
  --color-bg-card: #0F2440;
  --color-bg-elev: #1B3A5B;
  --color-accent: #39FF88;
  --color-accent-dim: rgba(57, 255, 136, 0.18);
  --color-accent-2: #FF7A3D;
  --color-accent-2-dim: rgba(255, 122, 61, 0.18);
  --color-data: #00E5FF;
  --color-text: #F0F4F8;
  --color-text-dim: #A6B3C8;
  --color-line: rgba(27, 58, 91, 0.85);

  --font-sans: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Inter", -apple-system, sans-serif;
  --font-title: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", "Inter", -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", "SFMono-Regular", "Consolas", monospace;

  --header-h: 72px;
  --cut: 14px;
  --container-w: 1180px;
  --transition: 0.25s ease;
  --page-gap: clamp(2.5rem, 6vw, 5rem);
}

/* ---------- 2. Base ---------- */
html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  background: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

ul,
ol {
  list-style: none;
}

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

::selection {
  background: rgba(57, 255, 136, 0.3);
  color: #fff;
}

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

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 3. Layout Utilities ---------- */
.container {
  width: min(var(--container-w), 100% - 2rem);
  margin-inline: auto;
}

.section {
  position: relative;
  padding-block: var(--page-gap);
}

.page-space {
  padding-top: calc(var(--header-h) + 2rem);
}

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0 var(--radius, 4px) var(--radius, 4px) var(--radius, 4px);
  border: 1px solid transparent;
  background: var(--color-bg-elev);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn-primary {
  background: var(--color-accent);
  color: #0A1930;
  font-weight: 700;
  box-shadow: 0 0 0 1px rgba(57, 255, 136, 0.4), 0 6px 20px rgba(57, 255, 136, 0.22);
}

.btn-primary:hover {
  background: #2EE873;
  box-shadow: 0 0 0 1px rgba(57, 255, 136, 0.7), 0 8px 24px rgba(57, 255, 136, 0.3);
}

.btn-ghost {
  background: transparent;
  border-color: rgba(0, 229, 255, 0.55);
  color: var(--color-data);
  border-radius: var(--radius, 4px) 0 var(--radius, 4px) var(--radius, 4px);
}

.btn-ghost:hover {
  background: rgba(0, 229, 255, 0.08);
  border-color: var(--color-data);
}

/* ---------- 5. Skip Link ---------- */
.skip-link {
  position: fixed;
  top: -60px;
  left: 16px;
  z-index: 2000;
  padding: 0.6rem 1.1rem;
  background: var(--color-accent);
  color: #0A1930;
  font-weight: 700;
  font-size: 0.88rem;
  border-radius: 0 0 6px 6px;
  transition: top 0.2s ease;
}

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

/* ---------- 6. Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-h);
  background: transparent;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.site-header[data-scrolled] {
  background: rgba(10, 25, 48, 0.92);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.35), 0 1px 0 var(--color-line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  height: var(--header-h);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  flex-shrink: 0;
}

.brand-mark {
  position: relative;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-data) 100%);
  clip-path: polygon(0 0, 76% 0, 100% 24%, 100% 100%, 0 100%);
}

.brand-mark::after {
  content: "";
  position: absolute;
  inset: 5px;
  background: var(--color-bg);
  clip-path: polygon(0 0, 70% 0, 100% 30%, 100% 100%, 0 100%);
}

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

.brand-name {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 1.15rem;
  color: var(--color-text);
  letter-spacing: 0.03em;
}

.brand-cn {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.62em;
  color: var(--color-accent);
  border: 1px solid rgba(57, 255, 136, 0.5);
  border-radius: 3px;
  padding: 1px 5px;
  margin-left: 3px;
  vertical-align: 2px;
}

.brand-tagline {
  font-family: var(--font-mono);
  font-size: 0.6rem;
  color: var(--color-data);
  letter-spacing: 0.14em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  position: relative;
  display: block;
  padding: 0.55rem 0.85rem;
  border-radius: 4px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--color-text-dim);
  transition: color 0.2s ease, background 0.2s ease;
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0.85rem;
  right: 0.85rem;
  bottom: 0.25rem;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.25s ease;
}

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

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

.nav-link[aria-current="page"] {
  color: var(--color-text);
  font-weight: 700;
}

.nav-utility {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: 0.6rem;
  padding: 0.42rem 0.8rem;
  border: 1px solid rgba(255, 122, 61, 0.55);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
  color: var(--color-accent-2);
  transition: background 0.2s ease, border-color 0.2s ease;
}

.nav-utility:hover {
  background: var(--color-accent-2-dim);
  border-color: var(--color-accent-2);
}

.nav-utility-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent-2);
  animation: pulse 2s ease-out infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 122, 61, 0.6);
  }
  100% {
    box-shadow: 0 0 0 8px rgba(255, 122, 61, 0);
  }
}

.nav-toggle {
  position: relative;
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: transparent;
  border: 1px solid rgba(166, 179, 200, 0.25);
  border-radius: 4px;
  cursor: pointer;
}

.nav-toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  border-radius: 2px;
  background: var(--color-text);
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.scroll-progress {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-data));
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
  will-change: transform;
}

/* ---------- 7. Mobile Navigation ---------- */
@media (max-width: 1120px) and (min-width: 921px) {
  .nav-link {
    padding: 0.5rem 0.6rem;
    font-size: 0.82rem;
  }

  .nav-utility {
    padding: 0.35rem 0.6rem;
    font-size: 0.7rem;
  }

  .brand-name {
    font-size: 1.05rem;
  }
}

@media (max-width: 920px) {
  :root {
    --header-h: 64px;
  }

  .nav-toggle {
    display: flex;
    z-index: 1100;
  }

  .site-nav {
    position: fixed;
    inset: 0;
    z-index: 1050;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    background: rgba(6, 14, 29, 0.98);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.25s ease, visibility 0.25s ease, transform 0.25s ease;
  }

  .site-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav-list {
    flex-direction: column;
    align-items: center;
    gap: 0.4rem;
  }

  .nav-link {
    padding: 0.5rem 1.25rem;
    font-size: 1.35rem;
    font-weight: 700;
  }

  .nav-link::after {
    left: 1.25rem;
    right: 1.25rem;
    bottom: 0.15rem;
  }

  .nav-utility {
    margin-left: 0;
    margin-top: 0.75rem;
    padding: 0.6rem 1.1rem;
    font-size: 0.85rem;
  }

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

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

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

/* ---------- 8. Footer ---------- */
.site-footer {
  position: relative;
  background: #060D1C;
  border-top: 1px solid var(--color-line);
  margin-top: calc(var(--page-gap) * 0.6);
}

.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-data) 55%, var(--color-accent-2) 100%);
  opacity: 0.75;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.2rem;
  padding-block: 3.5rem 2.5rem;
}

@media (min-width: 700px) {
  .footer-grid {
    grid-template-columns: 1.2fr 0.8fr 0.8fr;
  }

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

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.5fr 0.8fr 0.9fr 1.1fr;
    gap: 3rem;
  }

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

.footer-logo {
  display: inline-flex;
  align-items: center;
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 1.4rem;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.footer-logo-cn {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.6em;
  color: var(--color-accent);
  border: 1px solid rgba(57, 255, 136, 0.45);
  border-radius: 3px;
  padding: 2px 6px;
  margin-left: 6px;
}

.footer-about {
  margin-top: 0.9rem;
  max-width: 46ch;
  font-size: 0.88rem;
  color: var(--color-text-dim);
}

.footer-statement {
  margin-top: 0.9rem;
  max-width: 50ch;
  padding-left: 0.9rem;
  border-left: 2px solid rgba(0, 229, 255, 0.35);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  line-height: 1.8;
  color: rgba(0, 229, 255, 0.7);
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.footer-title {
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--color-line);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

.footer-links,
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.footer-links a {
  font-size: 0.88rem;
  color: var(--color-text-dim);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

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

.footer-contact {
  font-style: normal;
}

.footer-contact li {
  font-size: 0.86rem;
  color: var(--color-text-dim);
}

.footer-note {
  margin-top: 0.5rem;
  font-size: 0.72rem;
  line-height: 1.6;
  color: rgba(166, 179, 200, 0.7);
}

.footer-bottom {
  border-top: 1px solid var(--color-line);
  background: rgba(0, 0, 0, 0.2);
}

.footer-bottom-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  padding-block: 1rem;
  font-size: 0.75rem;
  color: var(--color-text-dim);
}

.footer-copyright,
.footer-icp {
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

/* ---------- 9. Breadcrumbs ---------- */
.breadcrumbs {
  margin-bottom: 1.5rem;
}

.breadcrumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-text-dim);
}

.breadcrumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  color: rgba(166, 179, 200, 0.5);
}

.breadcrumbs__link {
  color: var(--color-text-dim);
  transition: color 0.2s ease;
}

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

.breadcrumbs__current {
  color: var(--color-data);
}

/* ---------- 10. Hero & Typography ---------- */
.page-hero {
  position: relative;
  padding-block: calc(var(--header-h) + clamp(2.5rem, 6vw, 5rem)) clamp(2.5rem, 6vw, 4.5rem);
  background: var(--color-bg);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 2rem), 0 100%);
}

.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 25, 48, 0.55), var(--color-bg) 88%),
    repeating-linear-gradient(-45deg, transparent 0 10px, rgba(57, 255, 136, 0.05) 10px 11px);
  pointer-events: none;
}

.page-hero > .container {
  position: relative;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.kicker::before {
  content: "";
  width: 22px;
  height: 2px;
  background: var(--color-accent);
}

.page-title {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: clamp(1.9rem, 5vw, 3.2rem);
  line-height: 1.15;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

.lead {
  margin-top: 1rem;
  max-width: 56ch;
  font-size: 1rem;
  color: var(--color-text-dim);
}

.note-vertical {
  writing-mode: vertical-rl;
  padding-left: 0.5rem;
  border-left: 1px solid rgba(0, 229, 255, 0.35);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-data);
}

/* ---------- 11. Bento Grid & Panels ---------- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.25rem;
}

.bento-cell {
  grid-column: span 6;
  min-width: 0;
}

.bento-cell--wide {
  grid-column: span 8;
}

.bento-cell--full {
  grid-column: 1 / -1;
}

.bento-cell--tall {
  grid-row: span 2;
}

@media (max-width: 767px) {
  .bento-cell,
  .bento-cell--wide,
  .bento-cell--full,
  .bento-cell--tall {
    grid-column: 1 / -1;
    grid-row: auto;
  }
}

.panel {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 180px;
  padding: 1.4rem 1.4rem 1.5rem;
  background: var(--color-bg-card);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
  transition: background 0.3s ease;
}

.panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: var(--cut);
  height: 1px;
  background: rgba(240, 244, 248, 0.08);
}

.panel--accent {
  background: linear-gradient(160deg, rgba(57, 255, 136, 0.09), var(--color-bg-card) 42%);
}

.panel--accent::before {
  background: linear-gradient(90deg, var(--color-accent), var(--color-data));
}

.panel--warn {
  background: linear-gradient(160deg, rgba(255, 122, 61, 0.08), var(--color-bg-card) 45%);
}

.panel--warn::before {
  background: var(--color-accent-2);
}

.panel__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.panel__title {
  font-family: var(--font-title);
  font-weight: 900;
  font-size: 1.05rem;
  line-height: 1.3;
  color: var(--color-text);
}

.panel__body {
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--color-text-dim);
}

.panel__tag {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  gap: 0.3rem;
  margin-bottom: 0.6rem;
  padding: 2px 8px;
  border: 1px solid rgba(57, 255, 136, 0.4);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--color-accent);
}

.panel--warn .panel__tag {
  border-color: rgba(255, 122, 61, 0.5);
  color: var(--color-accent-2);
}

/* ---------- 12. Stats ---------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.75rem;
}

.stat-label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

.data-number {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.6rem;
  line-height: 1.2;
  font-variant-numeric: tabular-nums;
  color: var(--color-data);
}

/* ---------- 13. Accordion ---------- */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.accordion__item {
  background: var(--color-bg-card);
  border-left: 2px solid rgba(0, 229, 255, 0.35);
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 12px, 100% 100%, 0 100%);
  transition: border-color 0.25s ease;
}

.accordion__item[open] {
  border-left-color: var(--color-accent);
}

.accordion__trigger {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  width: 100%;
  padding: 1rem 1.2rem;
  background: transparent;
  border: 0;
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 0.94rem;
  font-weight: 700;
  text-align: left;
  color: var(--color-text);
  transition: color 0.2s ease;
  list-style: none;
}

.accordion__trigger::-webkit-details-marker {
  display: none;
}

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

.accordion__trigger::after {
  content: "+";
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--color-data);
  transition: color 0.2s ease;
}

.accordion__item[open] .accordion__trigger::after {
  content: "−";
  color: var(--color-accent);
}

.accordion__content {
  padding: 0 1.2rem 1.1rem;
  font-size: 0.86rem;
  line-height: 1.75;
  color: var(--color-text-dim);
}

/* ---------- 14. Decorative & Media ---------- */
.speed-lines {
  position: relative;
  overflow: hidden;
}

.speed-lines::before {
  content: "";
  position: absolute;
  inset: 0;
  background: repeating-linear-gradient(
    -45deg,
    transparent 0,
    transparent 9px,
    rgba(57, 255, 136, 0.08) 9px,
    rgba(57, 255, 136, 0.08) 10px
  );
  pointer-events: none;
}

.figure-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border-radius: 4px;
  background: linear-gradient(135deg, var(--color-bg-card), var(--color-bg));
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.figure-frame::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 42px;
  height: 3px;
  background: var(--color-accent);
}

.figure-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 15. Reveal Motion ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

[data-reveal].is-revealed {
  opacity: 1;
  transform: none;
}

/* ---------- 16. 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;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
  }
}