/* =========================================================
   KAIYUN / 开云竞猜 — Shared Site Kit
   Design DNA: 非对称编辑部体育数据面板
   File: /assets/site.css
   ========================================================= */

/* ---------- 1. Reset & Tokens ---------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-bg: #0B1020;
  --color-bg-2: #111A33;
  --color-bg-3: #182545;
  --color-line: #253A5E;
  --color-text: #EAF2FF;
  --color-text-2: #A6B8D9;
  --color-accent: #B6FF3D;
  --color-purple: #8B5CF6;
  --gradient-night: linear-gradient(135deg, #0B1020 0%, #2A1A5E 100%);
  --gradient-crystal: linear-gradient(135deg, #1E4A6A 0%, #8B5CF6 100%);
  --font-display: "Impact", "Arial Black", "Noto Sans SC", sans-serif;
  --font-body: "Inter", "PingFang SC", "Microsoft YaHei", sans-serif;
  --container-max: 1280px;
  --header-h: 76px;
  --ease-std: cubic-bezier(0.4, 0, 0.2, 1);
}

@media (max-width: 767px) {
  :root {
    --header-h: 60px;
  }
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(ellipse 90% 50% at 70% -10%, rgba(139, 92, 246, 0.13) 0%, transparent 100%),
    radial-gradient(ellipse 45% 35% at 12% 0%, rgba(182, 255, 61, 0.045) 0%, transparent 100%);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  padding-top: var(--header-h);
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--color-text);
}

p {
  color: var(--color-text-2);
}

strong, b {
  font-weight: 700;
  color: var(--color-text);
}

a {
  color: var(--color-text);
  text-decoration: none;
  transition: color 200ms var(--ease-std), background 200ms var(--ease-std), border-color 200ms var(--ease-std), box-shadow 200ms var(--ease-std), padding 200ms var(--ease-std);
}

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

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

::selection {
  background: rgba(182, 255, 61, 0.28);
  color: var(--color-text);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--color-line);
  border-radius: 5px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-purple);
}

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

/* ---------- 2. Layout Helpers ---------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
}

.section {
  padding: clamp(3rem, 7vw, 6rem) 0;
  position: relative;
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(160px, 220px) 1fr;
  gap: clamp(1.5rem, 4vw, 3rem);
  align-items: start;
}

.prose {
  max-width: 72ch;
  line-height: 1.75;
  color: var(--color-text-2);
}
.prose h2 {
  font-size: 1.5rem;
  margin: 2rem 0 0.75rem;
}
.prose p {
  margin-bottom: 1rem;
}
.prose ul {
  margin: 0 0 1rem 1.25rem;
  color: var(--color-text-2);
}

/* ---------- 3. Section Heading ---------- */
.section-head {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 2.5rem;
}

.section-head__num {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  line-height: 1;
  color: var(--color-bg-3);
  -webkit-text-stroke: 1px var(--color-line);
  user-select: none;
}

.section-head__title {
  font-size: clamp(1.75rem, 3.5vw, 3rem);
  line-height: 1.15;
  max-width: 20ch;
}

.section-head__note {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-2);
  max-width: 480px;
  writing-mode: horizontal-tb;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 8px rgba(182, 255, 61, 0.6);
  flex-shrink: 0;
}

/* ---------- 4. Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border: 1px solid var(--color-line);
  border-radius: 2px;
  background: transparent;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background 200ms var(--ease-std), border-color 200ms var(--ease-std), color 200ms var(--ease-std), box-shadow 200ms var(--ease-std);
}

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

.btn--solid {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: var(--color-bg);
  font-weight: 700;
}

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

.btn--ghost {
  border-color: var(--color-line);
  color: var(--color-text-2);
}

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

.btn--vip {
  background: rgba(139, 92, 246, 0.12);
  border-color: rgba(139, 92, 246, 0.55);
  color: var(--color-purple);
}

.btn--vip:hover {
  background: var(--color-purple);
  border-color: var(--color-purple);
  color: var(--color-text);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.35);
}

.btn--sm {
  padding: 0.45rem 0.9rem;
  font-size: 0.8rem;
}

.btn--lg {
  padding: 0.75rem 1.75rem;
  font-size: 1rem;
}

/* ---------- 5. Cards & Tags ---------- */
.card {
  position: relative;
  background: var(--color-bg-3);
  border: 1px solid var(--color-line);
  border-radius: 4px;
  padding: 1.5rem;
  transition: border-color 200ms var(--ease-std), box-shadow 200ms var(--ease-std), transform 200ms var(--ease-std);
}

.card:hover {
  border-color: rgba(182, 255, 61, 0.35);
  box-shadow: 0 0 24px rgba(182, 255, 61, 0.06);
}

.card--panel::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 64px;
  height: 2px;
  background: var(--gradient-crystal);
  border-radius: 2px;
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.card__meta {
  font-size: 0.75rem;
  color: var(--color-text-2);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.card__action {
  margin-top: 1rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.6rem;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-text-2);
  background: var(--color-bg-2);
  border: 1px solid var(--color-line);
  border-radius: 999px;
  white-space: nowrap;
}

.tag--live {
  color: var(--color-accent);
  border-color: rgba(182, 255, 61, 0.4);
}

.tag--live::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 6px rgba(182, 255, 61, 0.8);
}

.tag--vip {
  color: var(--color-purple);
  border-color: rgba(139, 92, 246, 0.5);
}

/* ---------- 6. Grid & Tables ---------- */
.grid {
  display: grid;
  gap: 1.25rem;
}

.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: 1023px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

.table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.data-table th {
  text-align: left;
  padding: 0.75rem 1rem;
  color: var(--color-text-2);
  font-weight: 600;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--color-line);
  white-space: nowrap;
}

.data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid rgba(37, 58, 94, 0.5);
  color: var(--color-text);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}

.data-table tbody tr {
  transition: background 150ms var(--ease-std);
}

.data-table tbody tr:hover {
  background: rgba(24, 37, 69, 0.7);
}

.num {
  font-variant-numeric: tabular-nums;
  font-family: "SF Mono", "Cascadia Mono", "Roboto Mono", Consolas, monospace;
}

.scroll-x {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.scroll-x::-webkit-scrollbar {
  height: 6px;
}

/* ---------- 7. Breadcrumb ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.375rem 0.5rem;
  padding: 0.75rem 0;
  font-size: 0.875rem;
  list-style: none;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  color: var(--color-line);
  margin-right: 0;
}

.breadcrumb__link {
  color: var(--color-text-2);
}

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

.breadcrumb__item[aria-current="page"] {
  color: var(--color-text);
  font-weight: 600;
}

/* ---------- 8. Skip Link ---------- */
.skip-link {
  position: fixed;
  top: -4rem;
  left: 1rem;
  z-index: 999;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.125rem;
  background: var(--color-accent);
  color: var(--color-bg);
  font-weight: 700;
  font-size: 0.875rem;
  border-radius: 2px;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.45);
  transition: top 200ms var(--ease-std);
}

.skip-link:focus-visible {
  top: 1rem;
  outline: none;
}

/* ---------- 9. Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(11, 16, 32, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-line);
}

.site-header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gradient-crystal);
  opacity: 0.85;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  height: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 3vw, 2.5rem);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  color: var(--color-text);
}

.site-header__brand:hover {
  color: var(--color-text);
}

.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-bg);
  background: var(--gradient-crystal);
  border-radius: 4px;
  box-shadow: 0 0 16px rgba(139, 92, 246, 0.35);
}

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

.brand-copy__name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: 0.06em;
}

.brand-copy__sub {
  font-size: 0.625rem;
  color: var(--color-text-2);
  letter-spacing: 0.04em;
  max-width: 190px;
  margin-top: 3px;
}

/* Navigation */
.site-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-nav__list {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  list-style: none;
}

.site-nav__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.3rem;
  padding: 0.5rem 0.65rem;
  color: var(--color-text-2);
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: 2px;
  position: relative;
  transition: color 200ms var(--ease-std), background 200ms var(--ease-std);
}

.site-nav__link::before {
  content: attr(data-nav-index);
  font-family: var(--font-display);
  font-size: 0.625rem;
  color: var(--color-purple);
  opacity: 0.85;
  line-height: 1;
}

.site-nav__link::after {
  content: "";
  position: absolute;
  left: 0.65rem;
  right: 0.65rem;
  bottom: 0.15rem;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 200ms var(--ease-std);
}

.site-nav__link:hover {
  color: var(--color-text);
}

.site-nav__link:hover::after {
  transform: scaleX(1);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-text);
  background: rgba(139, 92, 246, 0.12);
}

.site-nav__link[aria-current="page"]::after {
  transform: scaleX(1);
  background: var(--color-purple);
}

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

.site-nav__cta {
  margin-left: 0.5rem;
}

/* Nav toggle */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: 1px solid var(--color-line);
  border-radius: 4px;
  padding: 0.5rem 0.75rem;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.875rem;
  cursor: pointer;
  transition: border-color 200ms var(--ease-std);
}

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

.nav-toggle.is-active {
  border-color: var(--color-purple);
}

.nav-toggle__icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  transition: transform 250ms var(--ease-std), opacity 200ms var(--ease-std);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(6px) 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(-6px) rotate(-45deg);
}

/* Progress track */
.progress-track {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 3px;
  z-index: 5;
  pointer-events: none;
}

.progress-track__fill {
  display: block;
  width: 0%;
  height: 100%;
  background: var(--gradient-crystal);
  box-shadow: 0 0 10px rgba(139, 92, 246, 0.5);
  transition: width 150ms ease-out;
}

/* Mobile nav */
@media (max-width: 1023px) {
  .nav-toggle {
    display: inline-flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 99;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: 0;
    padding: clamp(1.25rem, 5vw, 3rem) clamp(1.25rem, 5vw, 3rem) 3rem;
    background: rgba(17, 26, 51, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    transition: transform 300ms var(--ease-std), opacity 300ms var(--ease-std), visibility 0s linear 300ms;
  }

  .site-nav[data-open="true"] {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
    transition: transform 300ms var(--ease-std), opacity 300ms var(--ease-std);
  }

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

  .site-nav__item {
    border-bottom: 1px solid rgba(37, 58, 94, 0.6);
  }

  .site-nav__link {
    display: flex;
    align-items: baseline;
    gap: 0.75rem;
    padding: 1rem 0.25rem;
    font-size: 1.125rem;
    border-radius: 0;
  }

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

  .site-nav__link[aria-current="page"] {
    background: transparent;
    border-left: 3px solid var(--color-accent);
    padding-left: 0.875rem;
  }

  .site-nav__cta {
    width: 100%;
    justify-content: center;
    margin: 1.5rem 0 0;
  }
}

@media (max-width: 480px) {
  .brand-copy__sub {
    display: none;
  }
}

/* ---------- 10. Main Content ---------- */
#main-content {
  scroll-margin-top: calc(var(--header-h) + 1rem);
  min-height: 70vh;
}

/* ---------- 11. Footer ---------- */
.site-footer {
  position: relative;
  background: var(--color-bg-2);
  border-top: 1px solid var(--color-line);
  padding: clamp(3rem, 6vw, 5rem) 0 0;
  margin-top: 4rem;
}

.site-footer::before {
  content: "";
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent 0%, var(--color-purple) 25%, var(--color-accent) 60%, transparent 100%);
  opacity: 0.55;
}

.site-footer__inner {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem);
}

.site-footer__top {
  display: grid;
  grid-template-columns: 2.4fr 1.1fr 1.1fr 1.6fr;
  gap: clamp(1.5rem, 4vw, 3.5rem);
  padding-bottom: 2.5rem;
}

.footer-brand__row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.footer-brand__mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 800;
  line-height: 1;
  color: var(--color-bg);
  background: var(--gradient-crystal);
  border-radius: 4px;
  box-shadow: 0 0 14px rgba(139, 92, 246, 0.3);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  color: var(--color-text);
}

.footer-brand__sub {
  font-size: 0.75rem;
  color: var(--color-purple);
  letter-spacing: 0.06em;
}

.footer-brand__desc {
  margin-top: 0.875rem;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text-2);
  max-width: 320px;
}

.footer-col__title {
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-2);
  margin: 0.4rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid rgba(37, 58, 94, 0.6);
}

.footer-col__list {
  list-style: none;
}

.footer-col__list li {
  margin-bottom: 0.5rem;
}

.footer-col__list a {
  color: var(--color-text-2);
  font-size: 0.875rem;
  transition: color 200ms var(--ease-std), padding-left 200ms var(--ease-std);
}

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

.footer-col__contact {
  list-style: none;
  font-style: normal;
  font-size: 0.875rem;
  color: var(--color-text-2);
}

.footer-col__contact li {
  margin-bottom: 0.5rem;
  line-height: 1.6;
}

.site-footer__bottom {
  border-top: 1px solid rgba(37, 58, 94, 0.5);
  padding: 1.25rem 0 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem 1.5rem;
}

.site-footer__copyright {
  font-size: 0.875rem;
  color: var(--color-text-2);
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1.25rem;
  list-style: none;
}

.site-footer__legal li {
  font-size: 0.875rem;
  color: var(--color-text-2);
}

.site-footer__legal a {
  color: var(--color-text-2);
}

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

@media (max-width: 1023px) {
  .site-footer__top {
    grid-template-columns: 1.5fr 1fr 1fr;
  }

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

@media (max-width: 640px) {
  .site-footer__top {
    grid-template-columns: 1fr;
  }

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

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

/* ---------- 12. Reveal Motion ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 600ms var(--ease-std), transform 600ms var(--ease-std);
  transition-delay: var(--reveal-delay, 0ms);
  will-change: opacity, transform;
}

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

/* ---------- 13. 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;
  }

  .progress-track__fill {
    transition: none;
  }

  .site-nav {
    transition: none;
  }
}