/* ============================================================
   YABO 亚博注册 — 2026 赛季赛事数据服务
   /assets/site.css
   全站共享样式：reset / 变量 / 排版 / 页头 / 页脚 / 通用组件
   视觉方向：未来体育场 · 数据化 · 深蓝 + 荧光绿 + 橙
   ============================================================ */

/* ---------- CSS Variables ---------- */
:root {
  --navy: #0a1f44;
  --navy-deep: #0b1a32;
  --navy-edge: #1b3260;
  --neon: #39ff14;
  --orange: #ff6b35;
  --white: #ffffff;
  --gray: #a8b4c8;
  --light: #f5f7fa;

  --font-display: "Archivo Black", "Helvetica Neue", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-body: "Inter", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Roboto Mono", Consolas, monospace;

  --text-xl: clamp(2.6rem, 5vw, 4.2rem);
  --text-lg: clamp(1.8rem, 3vw, 2.6rem);
  --text-md: clamp(1.2rem, 1.6vw, 1.5rem);
  --text-sm: 0.875rem;
  --text-xs: 0.75rem;

  --container: 1280px;
  --container-pad: 24px;
  --radius-lg: 20px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;

  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --duration: 0.3s;
  --duration-slow: 0.6s;

  --z-nav: 100;
  --z-skip: 1000;
}

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

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

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--white);
  background-color: var(--navy);
  min-height: 100vh;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

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

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  border: none;
  background: none;
  cursor: pointer;
}

a {
  color: var(--neon);
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}

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

/* ---------- Typography ---------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.5px;
  color: var(--white);
  margin-bottom: 0.5em;
}

h1 { font-size: var(--text-xl); }
h2 { font-size: var(--text-lg); }
h3 { font-size: var(--text-md); }

p {
  margin-bottom: 1em;
}

::selection {
  background: var(--neon);
  color: var(--navy);
}

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--navy-deep);
}

::-webkit-scrollbar-thumb {
  background: var(--navy-edge);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--neon);
}

/* ---------- Accessibility ---------- */
.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;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 16px;
  z-index: var(--z-skip);
  display: inline-block;
  padding: 12px 20px;
  background: var(--neon);
  color: var(--navy);
  font-weight: 700;
  font-size: 14px;
  border-radius: var(--radius-sm);
  transition: top var(--duration) var(--ease);
}

.skip-link:focus {
  top: 16px;
  outline: none;
  box-shadow: 0 4px 20px rgba(57, 255, 20, 0.4);
}

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

#main-content {
  scroll-margin-top: 90px;
  min-height: 60vh;
}

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

/* ---------- Layout Helpers ---------- */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section {
  padding-block: 72px;
}

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

/* ---------- Grid ---------- */
.grid {
  display: grid;
  gap: var(--container-pad);
  grid-template-columns: repeat(12, 1fr);
}

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

.grid__span-4  { grid-column: span 4; }
.grid__span-6  { grid-column: span 6; }
.grid__span-8  { grid-column: span 8; }
.grid__span-12 { grid-column: span 12; }

@media (max-width: 991px) {
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 767px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .grid__span-4,
  .grid__span-6,
  .grid__span-8,
  .grid__span-12 {
    grid-column: span 1;
  }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 32px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 600;
  line-height: 1;
  color: var(--white);
  background: transparent;
  border: 2px solid var(--navy-edge);
  border-radius: var(--radius-pill);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: all var(--duration) var(--ease);
}

.btn:hover {
  border-color: var(--neon);
  color: var(--neon);
  transform: translateY(-2px);
}

.btn--primary {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--navy);
  box-shadow: 0 0 24px rgba(57, 255, 20, 0.25);
}

.btn--primary:hover {
  background: var(--white);
  border-color: var(--white);
  color: var(--navy);
  box-shadow: 0 0 36px rgba(57, 255, 20, 0.5);
}

.btn--accent {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--navy);
}

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

.btn--ghost {
  border-color: rgba(168, 180, 200, 0.4);
  color: var(--gray);
}

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

/* ---------- Badge ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--orange);
  background: rgba(255, 107, 53, 0.12);
  border: 1px solid rgba(255, 107, 53, 0.35);
  border-radius: var(--radius-pill);
}

.badge--green {
  color: var(--neon);
  background: rgba(57, 255, 20, 0.08);
  border-color: rgba(57, 255, 20, 0.35);
}

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  margin-block: 24px 32px;
}

.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  list-style: none;
  padding: 0;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
}

.breadcrumb__item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  display: inline-block;
  color: var(--navy-edge);
  font-family: var(--font-mono);
}

.breadcrumb__link {
  color: var(--gray);
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}

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

.breadcrumb__link[aria-current="page"] {
  color: var(--white);
  font-weight: 500;
}

/* ---------- Card ---------- */
.card {
  position: relative;
  display: block;
  padding: 28px 24px;
  background: var(--navy-deep);
  border: 1px solid var(--navy-edge);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--neon), var(--orange));
  opacity: 0;
  transition: opacity var(--duration) var(--ease);
}

.card:hover,
.card:focus-within {
  transform: translateY(-4px);
  box-shadow: 0 18px 48px rgba(0, 0, 0, 0.35);
  border-color: rgba(57, 255, 20, 0.25);
}

.card:hover::before,
.card:focus-within::before {
  opacity: 1;
}

/* ---------- Table ---------- */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.table th,
.table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--navy-edge);
  text-align: left;
}

.table th {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray);
  background: rgba(27, 50, 96, 0.5);
}

.table td {
  color: var(--white);
}

/* ---------- Media / Image Container ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  background-color: var(--navy-deep);
  background-image: repeating-linear-gradient(45deg, transparent, transparent 10px, rgba(57, 255, 20, 0.04) 10px, rgba(57, 255, 20, 0.04) 11px);
  border: 1px solid var(--navy-edge);
  border-radius: var(--radius-md);
}

.media--landscape { aspect-ratio: 16 / 9; }
.media--portrait  { aspect-ratio: 4 / 5; }
.media--square    { aspect-ratio: 1 / 1; }
.media--wide      { aspect-ratio: 21 / 9; }

.media__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gray);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

/* ---------- Scroll Progress ---------- */
.scroll-progress {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--neon), var(--orange));
  transform: scaleX(0);
  transform-origin: left center;
  z-index: 5;
  pointer-events: none;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: rgba(10, 31, 68, 0.92);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--navy-edge);
}

/* Masthead */
.masthead {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-block: 18px 10px;
}

.masthead__aside {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gray);
  text-transform: uppercase;
  min-width: 0;
}

.masthead__aside--left {
  justify-content: flex-start;
}

.masthead__aside--right {
  justify-content: flex-end;
}

.masthead__season {
  color: var(--white);
  font-weight: 600;
}

.masthead__scope {
  color: var(--gray);
}

.masthead__slash {
  color: var(--orange);
  font-family: var(--font-mono);
}

.masthead__status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 4px 12px;
  border: 1px solid rgba(57, 255, 20, 0.3);
  border-radius: var(--radius-pill);
  color: var(--neon);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.masthead__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--neon);
  box-shadow: 0 0 8px var(--neon);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.55;
    transform: scale(0.75);
  }
}

/* Brand */
.brand {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  flex-shrink: 0;
  text-decoration: none;
}

.brand__name {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.6vw, 3.2rem);
  font-weight: 900;
  line-height: 0.9;
  letter-spacing: -0.03em;
  color: var(--white);
}

.brand__slash {
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--neon);
  font-weight: 400;
}

.brand__cn {
  font-size: clamp(0.9rem, 1.2vw, 1.1rem);
  font-weight: 600;
  color: var(--gray);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

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

/* Nav Toggle */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(27, 50, 96, 0.6);
  border: 1px solid var(--navy-edge);
  border-radius: var(--radius-sm);
  transition: background var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

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

.nav-toggle__box {
  position: relative;
  width: 22px;
  height: 16px;
}

.nav-toggle__bar {
  position: absolute;
  left: 0;
  width: 22px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: top var(--duration) var(--ease), transform var(--duration) var(--ease), opacity var(--duration) var(--ease);
}

.nav-toggle__bar:nth-child(1) { top: 0; }
.nav-toggle__bar:nth-child(2) { top: 7px; }
.nav-toggle__bar:nth-child(3) { top: 14px; }

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

/* Nav */
.site-nav {
  border-top: 1px solid var(--navy-edge);
}

.nav-list {
  display: flex;
  justify-content: center;
  gap: 2px;
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: nav-counter;
}

.nav-list__item {
  counter-increment: nav-counter;
}

.nav-list__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 14px 20px 16px;
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 500;
  color: var(--gray);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--duration) var(--ease);
}

.nav-list__link::before {
  content: "0" counter(nav-counter);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 400;
  color: var(--neon);
  letter-spacing: 0.08em;
}

.nav-list__link::after {
  content: "";
  position: absolute;
  bottom: 6px;
  left: 20px;
  right: 20px;
  height: 2px;
  background: linear-gradient(90deg, var(--neon), var(--orange));
  border-radius: 2px;
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--duration) var(--ease);
}

.nav-list__link:hover,
.nav-list__link:focus-visible {
  color: var(--white);
}

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

.nav-list__link[aria-current="page"] {
  color: var(--white);
}

/* ---------- Footer ---------- */
.site-footer {
  margin-top: 96px;
  background:
    linear-gradient(rgba(57, 255, 20, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(57, 255, 20, 0.035) 1px, transparent 1px),
    var(--navy-deep);
  background-size: 40px 40px, 40px 40px, cover;
  border-top: 1px solid var(--navy-edge);
}

.site-footer::before {
  content: "";
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--neon), var(--orange));
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1.2fr 1.5fr;
  gap: 48px;
  padding-block: 64px 48px;
}

.footer-brand__logo {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-brand__mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--navy);
  border: 1px solid var(--navy-edge);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 900;
  color: var(--neon);
}

.footer-brand__name {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  color: var(--white);
  line-height: 1;
  margin-bottom: 4px;
}

.footer-brand__sub {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--neon);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin: 0;
}

.footer-brand__icp {
  display: inline-block;
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed var(--navy-edge);
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gray);
}

.footer-nav {
  min-width: 0;
}

.footer-heading {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 18px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--navy-edge);
  position: relative;
}

.footer-heading::after {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--neon);
}

.footer-nav__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav__list li {
  margin-bottom: 4px;
}

.footer-nav__list a {
  display: inline-block;
  padding: 6px 0;
  font-size: 15px;
  color: var(--gray);
  text-decoration: none;
  transition: color var(--duration) var(--ease), padding-left var(--duration) var(--ease);
}

.footer-nav__list a:hover {
  color: var(--neon);
  padding-left: 6px;
}

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

.footer-contact ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-contact li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 5px 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--gray);
}

.footer-contact__label {
  display: inline-block;
  flex-shrink: 0;
  min-width: 40px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--neon);
  padding-top: 2px;
}

.footer-contact__value {
  color: var(--gray);
}

.footer-contact__note {
  margin-top: 8px;
  padding-top: 10px;
  border-top: 1px dashed var(--navy-edge);
  font-size: 13px;
  line-height: 1.5;
  color: var(--gray);
}

.footer-statement {
  border-block: 1px solid var(--navy-edge);
  background: rgba(10, 31, 68, 0.4);
  padding-block: 18px;
}

.footer-statement p {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--gray);
  max-width: 860px;
  text-align: center;
  margin-inline: auto;
}

.footer-bottom {
  border-top: 1px solid var(--navy-edge);
  background: rgba(10, 31, 68, 0.55);
  padding-block: 18px;
}

.footer-bottom__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-bottom__inner p {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray);
}

.footer-bottom__links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  padding: 0;
  margin: 0;
}

.footer-bottom__links a {
  font-size: 13px;
  color: var(--gray);
  text-decoration: none;
  transition: color var(--duration) var(--ease);
}

.footer-bottom__links a:hover {
  color: var(--neon);
}

/* ---------- Reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--duration-slow) var(--ease), transform var(--duration-slow) var(--ease);
  will-change: opacity, transform;
}

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

/* ---------- Responsive ---------- */
@media (max-width: 991px) {
  .footer-top {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

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

@media (max-width: 767px) {
  .container {
    padding-inline: 18px;
  }

  .section {
    padding-block: 56px;
  }

  .masthead {
    padding-block: 14px 10px;
  }

  .masthead__aside {
    display: none;
  }

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

  .brand {
    margin-right: auto;
  }

  .brand__name {
    font-size: 1.8rem;
  }

  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: none;
    background: var(--navy);
    border-top: none;
    border-bottom: 1px solid var(--navy-edge);
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
  }

  .site-nav[data-open="true"] {
    display: block;
  }

  .nav-list {
    flex-direction: column;
    padding: 10px 20px 18px;
    gap: 0;
  }

  .nav-list__link {
    display: flex;
    align-items: baseline;
    gap: 10px;
    padding: 14px 12px;
    border-bottom: 1px solid rgba(27, 50, 96, 0.5);
  }

  .nav-list__item:last-child .nav-list__link {
    border-bottom: none;
  }

  .footer-top {
    grid-template-columns: 1fr;
    gap: 32px;
    padding-block: 48px 36px;
  }

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

  .footer-statement p {
    text-align: left;
  }

  .footer-bottom__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .footer-bottom__links {
    gap: 16px;
  }
}

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

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