/* ============================
   米乐竞技 / Mile Sports
   Shared Site Kit
   /assets/site.css
   ============================ */

/* ---------- 1. Tokens & Reset ---------- */
:root {
  --m6-bg: #0A0E1A;
  --m6-bg-card: #111827;
  --m6-bg-2: #1F2937;
  --m6-accent: #10B981;
  --m6-accent-soft: rgba(16, 185, 129, 0.2);
  --m6-orange: #F59E0B;
  --m6-blue: #3B82F6;
  --m6-text: #E5E7EB;
  --m6-dim: #9CA3AF;
  --m6-heading: #FFFFFF;
  --m6-line: rgba(229, 231, 235, 0.1);
  --m6-line-strong: rgba(16, 185, 129, 0.35);
  --m6-line-blue: rgba(59, 130, 246, 0.3);
  --m6-font: "PingFang SC", "Microsoft YaHei", sans-serif;
  --m6-mono: "SF Mono", "JetBrains Mono", monospace;
  --m6-container: 1280px;
  --m6-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  background: var(--m6-bg);
  color: var(--m6-text);
  font-family: var(--m6-font);
  font-size: 16px;
  line-height: 1.7;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin: 0 0 0.5em;
  color: var(--m6-heading);
  font-weight: 800;
  line-height: 1.15;
}

p {
  margin: 0 0 1em;
}

ul,
ol {
  margin: 0;
  padding: 0;
  list-style: none;
}

a {
  color: var(--m6-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--m6-heading);
}

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

button {
  font-family: inherit;
}

::selection {
  background: var(--m6-accent);
  color: var(--m6-bg);
}

:focus-visible {
  outline: 2px solid var(--m6-accent);
  outline-offset: 3px;
}

/* ---------- 2. Layout ---------- */
.m6-container {
  width: 100%;
  max-width: var(--m6-container);
  margin: 0 auto;
  padding-left: clamp(16px, 4vw, 40px);
  padding-right: clamp(16px, 4vw, 40px);
}

.m6-main {
  min-height: 60vh;
}

.m6-section {
  position: relative;
  padding: clamp(64px, 10vw, 120px) 0;
}

.m6-section--tight {
  padding: clamp(40px, 6vw, 80px) 0;
}

.m6-section--alt {
  background: var(--m6-bg-card);
  border-top: 1px solid var(--m6-line);
  border-bottom: 1px solid var(--m6-line);
}

.m6-section--grid {
  background-image:
    linear-gradient(rgba(229, 231, 235, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(229, 231, 235, 0.035) 1px, transparent 1px);
  background-size: 48px 48px;
}

.m6-grid {
  display: grid;
  gap: 24px;
}

.m6-grid--2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.m6-grid--3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.m6-grid--4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

/* ---------- 3. Page Typography ---------- */
.m6-page-title {
  font-size: clamp(36px, 6vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  margin-bottom: 0.35em;
}

.m6-page-copy {
  font-size: 17px;
  color: var(--m6-text);
  max-width: 640px;
}

.m6-data {
  font-family: var(--m6-mono);
  font-size: 0.92em;
  font-weight: 600;
}

.m6-data--lg {
  font-family: var(--m6-mono);
  font-size: clamp(40px, 7vw, 80px);
  font-weight: 700;
  line-height: 1;
  color: var(--m6-heading);
  letter-spacing: -0.02em;
}

/* ---------- 4. Skip & Progress ---------- */
.m6-skip {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 300;
  background: var(--m6-accent);
  color: var(--m6-bg);
  padding: 8px 16px;
  font-weight: 700;
  transform: translateY(-240%);
  transition: transform 0.2s ease;
}

.m6-skip:focus {
  transform: translateY(0);
}

.m6-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  z-index: 250;
  background: var(--m6-accent);
  transform: scaleX(0);
  transform-origin: left top;
  pointer-events: none;
}

/* ---------- 5. Header & Nav ---------- */
.m6-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--m6-bg);
  border-bottom: 1px solid var(--m6-line);
}

.m6-header__inner {
  max-width: var(--m6-container);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 40px);
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.m6-brand {
  position: relative;
  z-index: 85;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: none;
}

.m6-brand__logo {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  background: var(--m6-bg-card);
  border: 1px solid var(--m6-accent);
  color: var(--m6-accent);
  font-family: var(--m6-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: -0.5px;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.m6-brand__text {
  color: var(--m6-heading);
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0.04em;
  transition: color 0.2s ease;
}

.m6-brand:hover .m6-brand__logo {
  background: var(--m6-accent);
  color: var(--m6-bg);
}

.m6-brand:hover .m6-brand__text {
  color: var(--m6-accent);
}

.m6-nav__list {
  display: flex;
  align-items: center;
  gap: 2px;
  counter-reset: m6-nav-counter;
}

.m6-nav__link {
  position: relative;
  display: inline-block;
  padding: 20px 12px;
  color: var(--m6-text);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.05em;
  white-space: nowrap;
  transition: color 0.2s ease;
}

.m6-nav__link::after {
  content: '';
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 0;
  height: 2px;
  background: var(--m6-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.25s var(--m6-ease);
}

.m6-nav__link:hover {
  color: var(--m6-heading);
}

.m6-nav__link:hover::after,
.m6-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
}

.m6-nav__link[aria-current="page"] {
  color: var(--m6-accent);
}

.m6-nav-toggle {
  display: none;
  position: relative;
  z-index: 90;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  background: transparent;
  border: 1px solid var(--m6-line);
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.m6-nav-toggle__bar {
  width: 20px;
  height: 2px;
  background: var(--m6-text);
  transition: transform 0.25s var(--m6-ease), opacity 0.2s ease, background-color 0.2s ease;
}

.m6-nav-toggle__text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

.m6-nav-toggle[aria-expanded="true"] {
  border-color: var(--m6-line-strong);
}

.m6-nav-toggle[aria-expanded="true"] .m6-nav-toggle__bar {
  background: var(--m6-accent);
}

.m6-nav-toggle[aria-expanded="true"] .m6-nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.m6-nav-toggle[aria-expanded="true"] .m6-nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

.m6-nav-toggle[aria-expanded="true"] .m6-nav-toggle__bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

body.m6-nav-lock {
  overflow: hidden;
}

/* ---------- 6. Footer ---------- */
.m6-footer {
  background: var(--m6-bg-2);
  border-top: 1px solid var(--m6-line-strong);
}

.m6-footer__main {
  max-width: var(--m6-container);
  margin: 0 auto;
  padding: clamp(48px, 7vw, 80px) clamp(16px, 4vw, 40px) 48px;
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 40px;
}

.m6-footer__brand {
  min-width: 0;
}

.m6-footer__logo {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin-bottom: 16px;
  background: var(--m6-accent-soft);
  border: 1px solid var(--m6-accent);
  color: var(--m6-accent);
  font-family: var(--m6-mono);
  font-size: 14px;
  font-weight: 700;
}

.m6-footer__desc {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--m6-text);
  max-width: 360px;
}

.m6-footer__trust {
  margin: 0;
  padding: 12px 16px;
  background: var(--m6-accent-soft);
  border-left: 3px solid var(--m6-accent);
  font-size: 13px;
  line-height: 1.7;
  color: var(--m6-text);
}

.m6-footer__col {
  min-width: 0;
}

.m6-footer__heading {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 14px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--m6-dim);
}

.m6-footer__heading::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--m6-accent);
  flex: none;
}

.m6-footer__list {
  display: grid;
  gap: 2px;
}

.m6-footer__link {
  color: var(--m6-text);
  font-size: 15px;
  line-height: 2.1;
}

.m6-footer__link:hover {
  color: var(--m6-accent);
}

.m6-footer__contact {
  min-width: 0;
}

.m6-footer__contact-item {
  margin: 0 0 6px;
  font-size: 14px;
  color: var(--m6-dim);
  line-height: 1.6;
}

.m6-footer__bottom {
  background: var(--m6-bg);
  border-top: 1px solid var(--m6-line);
}

.m6-footer__bottom-inner {
  max-width: var(--m6-container);
  margin: 0 auto;
  padding: 16px clamp(16px, 4vw, 40px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-size: 13px;
  color: var(--m6-dim);
}

/* ---------- 7. Components ---------- */
.m6-kicker {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 16px;
  font-family: var(--m6-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--m6-accent);
}

.m6-kicker::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--m6-accent);
  flex: none;
}

.m6-kicker::after {
  content: '';
  height: 1px;
  width: 60px;
  background: var(--m6-line-strong);
  flex: none;
}

.m6-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--m6-bg-card);
  border: 1px solid var(--m6-line);
  color: var(--m6-dim);
  font-family: var(--m6-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.1em;
  white-space: nowrap;
}

.m6-label::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--m6-accent);
}

.m6-label--warn {
  border-color: rgba(245, 158, 11, 0.28);
  color: var(--m6-orange);
}

.m6-label--warn::before {
  background: var(--m6-orange);
}

.m6-card {
  background: var(--m6-bg-card);
  border: 1px solid var(--m6-line);
  padding: clamp(20px, 3vw, 32px);
  transition: border-color 0.25s ease, background-color 0.25s ease;
}

.m6-card:hover {
  border-color: var(--m6-line-strong);
  background-color: rgba(16, 185, 129, 0.03);
}

.m6-caption {
  background: var(--m6-bg-card);
  border-left: 3px solid var(--m6-accent);
  padding: 16px 20px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--m6-dim);
}

.m6-caption__title {
  display: block;
  margin-bottom: 4px;
  font-size: 16px;
  font-weight: 700;
  color: var(--m6-heading);
}

.m6-exhibit {
  position: relative;
  background: var(--m6-bg-card);
  border: 1px solid var(--m6-line);
  padding: clamp(24px, 4vw, 48px);
}

.m6-exhibit[data-index]::before {
  content: attr(data-index);
  position: absolute;
  top: -15px;
  left: 24px;
  padding: 4px 12px;
  background: var(--m6-accent);
  color: var(--m6-bg);
  font-family: var(--m6-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.m6-figure {
  position: relative;
  display: grid;
  place-items: center;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(59, 130, 246, 0.08), transparent 60%),
    var(--m6-bg-card);
  border: 1px dashed var(--m6-line-blue);
  overflow: hidden;
}

.m6-figure::after {
  content: attr(data-label);
  padding: 8px 14px;
  background: var(--m6-bg-card);
  border: 1px solid var(--m6-line);
  font-family: var(--m6-mono);
  font-size: 12px;
  color: var(--m6-dim);
  letter-spacing: 0.08em;
}

.m6-figure--tall {
  aspect-ratio: 3 / 4;
}

.m6-figure--wide {
  aspect-ratio: 21 / 9;
}

.m6-figure > img,
.m6-figure > svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.m6-figure:has(> img, > svg)::after {
  display: none;
}

.m6-corner {
  position: absolute;
  width: 14px;
  height: 14px;
  pointer-events: none;
}

.m6-corner--tl {
  top: -1px;
  left: -1px;
  border-top: 2px solid var(--m6-accent);
  border-left: 2px solid var(--m6-accent);
}

.m6-corner--br {
  right: -1px;
  bottom: -1px;
  border-right: 2px solid var(--m6-accent);
  border-bottom: 2px solid var(--m6-accent);
}

.m6-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 24px 0 8px;
  font-size: 13px;
  color: var(--m6-dim);
}

.m6-breadcrumb__link {
  color: var(--m6-dim);
}

.m6-breadcrumb__link:hover {
  color: var(--m6-accent);
}

.m6-breadcrumb__sep {
  color: var(--m6-line-strong);
}

.m6-breadcrumb__current {
  color: var(--m6-text);
  font-weight: 600;
}

.m6-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  background: transparent;
  border: 1px solid var(--m6-accent);
  color: var(--m6-accent);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.04em;
  line-height: 1;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.m6-btn:hover {
  background: var(--m6-accent);
  color: var(--m6-bg);
  border-color: var(--m6-accent);
}

.m6-btn--solid {
  background: var(--m6-accent);
  color: var(--m6-bg);
}

.m6-btn--solid:hover {
  background: transparent;
  color: var(--m6-accent);
}

.m6-btn--ghost {
  border-color: var(--m6-line);
  color: var(--m6-text);
}

.m6-btn--ghost:hover {
  border-color: var(--m6-accent);
  color: var(--m6-accent);
  background: transparent;
}

.m6-btn--sm {
  padding: 8px 16px;
  font-size: 13px;
}

.m6-arrowlink {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 700;
  color: var(--m6-accent);
}

.m6-arrowlink::after {
  content: '→';
  transition: transform 0.2s ease;
}

.m6-arrowlink:hover {
  color: var(--m6-accent);
}

.m6-arrowlink:hover::after {
  transform: translateX(4px);
}

/* ---------- 8. Scroll Reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.6s var(--m6-ease),
    transform 0.6s var(--m6-ease),
    border-color 0.25s ease,
    background-color 0.25s ease,
    color 0.2s ease;
}

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

/* ---------- 9. Responsive ---------- */
@media (max-width: 1024px) {
  .m6-footer__main {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .m6-grid--3,
  .m6-grid--4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 880px) {
  .m6-header__inner {
    height: 64px;
  }

  .m6-nav-toggle {
    display: inline-flex;
  }

  .m6-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 100%;
    z-index: 80;
    padding: 112px clamp(24px, 7vw, 56px) 48px;
    overflow-y: auto;
    background:
      linear-gradient(rgba(16, 185, 129, 0.04) 1px, transparent 1px),
      linear-gradient(90deg, rgba(16, 185, 129, 0.04) 1px, transparent 1px),
      rgba(10, 14, 26, 0.97);
    background-size: 40px 40px, 40px 40px, auto;
    opacity: 0;
    visibility: hidden;
    transform: translateX(100%);
    transition:
      transform 0.32s var(--m6-ease),
      opacity 0.32s var(--m6-ease),
      visibility 0s linear 0.32s;
  }

  .m6-nav[data-open] {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    transition:
      transform 0.32s var(--m6-ease),
      opacity 0.32s var(--m6-ease),
      visibility 0s;
  }

  .m6-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    max-width: 560px;
    margin: 0 auto;
  }

  .m6-nav__item {
    counter-increment: m6-nav-counter;
  }

  .m6-nav__link {
    display: flex;
    align-items: baseline;
    gap: 16px;
    padding: 18px 4px;
    font-size: 24px;
    font-weight: 800;
    color: var(--m6-heading);
    border-bottom: 1px solid var(--m6-line);
  }

  .m6-nav__link::before {
    content: "0" counter(m6-nav-counter);
    font-family: var(--m6-mono);
    font-size: 12px;
    color: var(--m6-accent);
  }

  .m6-nav__link::after {
    display: none;
  }

  .m6-nav__link:hover,
  .m6-nav__link[aria-current="page"] {
    color: var(--m6-accent);
  }

  .m6-nav__link[aria-current="page"] {
    background: linear-gradient(90deg, var(--m6-accent-soft), transparent);
  }
}

@media (max-width: 640px) {
  .m6-footer__main {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .m6-footer__bottom-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .m6-grid--2,
  .m6-grid--3,
  .m6-grid--4 {
    grid-template-columns: 1fr;
  }
}

/* ---------- 10. 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;
    transition-delay: 0ms !important;
  }

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