/* ============================================================
   乐鱼LEYU体育 /assets/site.css
   全站共享样式：品牌轨道 · 命令栏导航 · 赛事订阅体系
   ============================================================ */

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, dl, dd, figure, blockquote { margin: 0; padding: 0; }
ul, ol { list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
input, button, textarea, select { font: inherit; color: inherit; }
button { background: none; border: 0; cursor: pointer; }
address { font-style: normal; }
::selection { background: var(--orange); color: var(--navy-deep); }

/* ---------- 设计变量 ---------- */
:root {
  --navy-deep: #0A1F44;
  --navy-dark: #081732;
  --navy: #123A66;
  --mist: #EAF0F8;
  --orange: #FF6B35;
  --gold: #FFD700;
  --white: #FFFFFF;
  --blue-gray: #A8B8CF;
  --gray-mid: #1D2D4D;
  --rail-w: 260px;
  --header-h: 60px;
  --ease-out: cubic-bezier(.16,1,.3,1);
  --font-display: "Impact", "Arial Black", "Noto Sans SC", sans-serif;
  --font-body: "Roboto", "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-mono: "Roboto Mono", "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

/* ---------- 基础排版 ---------- */
body {
  background: var(--navy-deep);
  color: var(--mist);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: .04em;
  line-height: 1.12;
  color: var(--white);
}
h1 { font-size: clamp(44px, 6vw, 84px); }
h2 { font-size: clamp(32px, 4.5vw, 56px); }
h3 { font-size: clamp(24px, 3vw, 34px); }
h4 { font-size: 20px; }
h5, h6 { font-size: 16px; }
p { margin: 0 0 1em; }
a { color: var(--orange); text-decoration: none; }
:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
}

/* ---------- 正文容器与栅格 ---------- */
.site-main {
  margin-left: var(--rail-w);
  min-height: 60vh;
  position: relative;
}
.container {
  width: 100%;
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 48px);
}
.section {
  padding: clamp(48px, 8vw, 100px) 0;
  position: relative;
}
.grid {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  align-items: start;
}
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.prose {
  font-size: 17px;
  line-height: 1.85;
  color: var(--mist);
}
.prose p { margin-bottom: 1.2em; }
.prose a { color: var(--orange); font-weight: 700; border-bottom: 1px solid rgba(255,107,53,.3); }
.prose h2 { margin-top: 1.4em; }

/* ---------- 头部：品牌轨道 ---------- */
.site-header {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: var(--rail-w);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  background-color: var(--navy-dark);
  background-image:
    linear-gradient(rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 24px 24px;
  border-right: 1px solid rgba(168,184,207,.08);
  overflow: hidden;
}
.site-header::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--orange) 0%, var(--gold) 30%, rgba(255,255,255,.06) 30%);
  z-index: 2;
  pointer-events: none;
}

/* 跳转链接 */
.skip-link {
  position: fixed;
  top: 12px;
  left: calc(var(--rail-w) + 12px);
  z-index: 2000;
  padding: 10px 18px;
  background: var(--orange);
  color: var(--navy-deep);
  font-weight: 700;
  clip-path: polygon(0 0, calc(100% - 10px) 0, 100% 100%, 10px 100%);
  transform: translateY(-200%);
  transition: transform .2s var(--ease-out);
}
.skip-link:focus {
  transform: translateY(0);
  outline: none;
  box-shadow: 0 0 0 3px var(--gold);
}

/* 滚动进度 */
.scroll-progress {
  position: fixed;
  top: 0;
  left: var(--rail-w);
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--orange), var(--gold));
  transform: scaleX(0);
  transform-origin: left center;
  z-index: 1500;
  pointer-events: none;
}
@media (prefers-reduced-motion: no-preference) {
  .scroll-progress { transition: transform .1s linear; }
}

/* 品牌栏 */
.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 26px 18px 22px 24px;
  border-bottom: 1px solid rgba(168,184,207,.1);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  color: var(--white);
}
.brand-mark {
  position: relative;
  display: inline-block;
  flex: none;
  width: 44px;
  height: 32px;
}
.brand-mark::before,
.brand-mark::after,
.brand-mark-wing {
  position: absolute;
  left: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--orange), var(--gold));
  transform: skewX(-24deg);
  border-radius: 1px;
  transition: width .3s var(--ease-out), opacity .3s var(--ease-out);
}
.brand-mark::before { content: ''; top: 0; width: 44px; }
.brand-mark-wing { top: 13px; width: 31px; opacity: .9; }
.brand-mark::after { content: ''; top: 26px; width: 38px; opacity: .55; }
.brand:hover .brand-mark-wing { width: 37px; opacity: 1; }
.brand-copy { display: flex; flex-direction: column; min-width: 0; }
.brand-name {
  display: block;
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  line-height: 1;
  letter-spacing: .05em;
  color: var(--white);
  white-space: nowrap;
}
.brand-tag {
  display: block;
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--blue-gray);
  white-space: nowrap;
}

/* 移动导航开关 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 6px;
  color: var(--mist);
}
.nav-toggle-box {
  display: flex;
  flex-direction: column;
  gap: 5px;
  width: 22px;
}
.nav-toggle-bar {
  display: block;
  height: 2px;
  background: var(--orange);
  transform: skewX(-24deg);
}
.nav-toggle-bar:nth-child(2) {
  width: 15px;
  margin-left: 3px;
  background: var(--gold);
}
.nav-toggle-label {
  font-size: 12px;
  letter-spacing: .1em;
}

/* 命令栏导航 */
.site-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding-top: 18px;
}
.nav-list { list-style: none; }
.nav-item { margin: 0; }
.nav-link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 16px 0 22px;
  color: var(--blue-gray);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  transition: color .25s ease, background .25s ease;
}
.nav-link:hover { color: var(--white); background: rgba(255,107,53,.05); }
.nav-link::before {
  content: '';
  position: absolute;
  left: 0;
  top: 16%;
  bottom: 16%;
  width: 3px;
  background: linear-gradient(180deg, var(--orange), var(--gold));
  transform: scaleY(0);
  transform-origin: bottom;
  transition: transform .28s var(--ease-out);
}
.nav-link:hover::before,
.nav-link[aria-current="page"]::before { transform: scaleY(1); }
.nav-link[aria-current="page"] { color: var(--white); }
.nav-link[aria-current="page"] .nav-index { color: var(--gold); }
.nav-index {
  min-width: 22px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--orange);
  opacity: .75;
}
.nav-label { line-height: 1.2; }
.nav-en {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--blue-gray);
  opacity: .55;
}

/* 订阅 CTA */
.nav-cta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: auto 16px 10px;
  min-height: 46px;
  padding: 0 14px 0 18px;
  background: linear-gradient(135deg, var(--orange) 0%, var(--gold) 100%);
  color: var(--navy-deep);
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 900;
  letter-spacing: .05em;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 100%, 12px 100%);
  transition: filter .25s ease, transform .25s var(--ease-out);
}
.nav-cta:hover { filter: brightness(1.1); transform: translateX(2px); }
.nav-cta:active { transform: translateX(0); }
.nav-cta-arrow { font-size: 18px; line-height: 1; }
.nav-note {
  margin: 6px 16px 0;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-align: center;
  text-transform: uppercase;
  color: rgba(168,184,207,.45);
}

/* 轨道竖排标签 */
.header-rail-label {
  margin: auto 0 0;
  align-self: center;
  padding: 12px 0 16px;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: rgba(168,184,207,.35);
  white-space: nowrap;
  user-select: none;
}

/* ---------- 页脚 ---------- */
.site-footer {
  margin-left: var(--rail-w);
  background: var(--gray-mid);
  color: var(--blue-gray);
  position: relative;
}
.footer-accent {
  height: 3px;
  background: linear-gradient(90deg, var(--orange) 0%, var(--gold) 42%, transparent 42.5%);
}
.footer-inner {
  max-width: 1360px;
  margin: 0 auto;
  padding: clamp(40px, 6vw, 72px) clamp(20px, 4vw, 48px) 28px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.6fr;
  gap: clamp(28px, 5vw, 56px);
}
.footer-block { min-width: 0; }
.footer-brand { margin-bottom: 18px; }
.footer-brand .brand-name { font-size: 21px; }
.footer-tagline {
  font-size: 14px;
  line-height: 1.8;
  color: var(--blue-gray);
  margin-bottom: 14px;
}
.footer-trust {
  font-size: 12px;
  line-height: 1.7;
  color: rgba(168,184,207,.7);
  border-left: 3px solid var(--orange);
  padding-left: 12px;
}
.footer-heading {
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .18em;
  color: var(--orange);
}
.footer-list li { margin-bottom: 10px; }
.footer-link {
  color: var(--blue-gray);
  font-size: 14px;
  transition: color .25s ease, padding-left .25s ease;
}
.footer-link:hover { color: var(--white); padding-left: 4px; }
.footer-line,
.footer-address,
.footer-note {
  font-size: 13px;
  line-height: 1.8;
  color: var(--blue-gray);
  margin-bottom: 6px;
}
.footer-note { color: rgba(168,184,207,.62); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  align-items: center;
  justify-content: space-between;
  margin-top: clamp(32px, 5vw, 56px);
  padding-top: 20px;
  border-top: 1px solid rgba(168,184,207,.14);
  font-size: 12px;
  color: rgba(168,184,207,.58);
}
.footer-copy,
.footer-icp { margin: 0; }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 48px;
  padding: 0 24px;
  border: 0;
  background: var(--orange);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .03em;
  text-decoration: none;
  cursor: pointer;
  clip-path: polygon(0 0, calc(100% - 12px) 0, 100% 100%, 12px 100%);
  transition: background .25s var(--ease-out), color .25s var(--ease-out), transform .25s var(--ease-out), filter .25s ease;
}
.btn:hover { background: var(--gold); color: var(--navy-deep); transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn--gold {
  background: linear-gradient(135deg, var(--orange), var(--gold));
  color: var(--navy-deep);
}
.btn--gold:hover { filter: brightness(1.08); color: var(--navy-deep); }
.btn--ghost {
  background: transparent;
  color: var(--mist);
  border: 1px solid rgba(255,255,255,.28);
  border-left: 3px solid var(--orange);
  clip-path: none;
}
.btn--ghost:hover { border-color: var(--gold); border-left-color: var(--gold); color: var(--gold); background: rgba(255,107,53,.05); }

/* ---------- 面包屑 ---------- */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 24px;
  padding: 0;
  font-size: 13px;
}
.breadcrumb-item a { color: var(--blue-gray); transition: color .25s ease; }
.breadcrumb-item a:hover { color: var(--orange); }
.breadcrumb-item + .breadcrumb-item::before {
  content: '→';
  margin-right: 8px;
  color: var(--orange);
}
.breadcrumb-item[aria-current="page"] { color: var(--white); }

/* ---------- 眉题与坐标标签 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange);
}
.eyebrow::before {
  content: '';
  width: 22px;
  height: 2px;
  background: var(--orange);
}
.line-label {
  display: flex;
  align-items: center;
  gap: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--blue-gray);
}
.line-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--orange), transparent);
}

/* ---------- 大数字统计 ---------- */
.stat-number {
  font-family: var(--font-display);
  font-size: clamp(48px, 7vw, 96px);
  line-height: 1;
  color: var(--orange);
  font-weight: 900;
  letter-spacing: .02em;
}

/* ---------- 图片容器 ---------- */
.media-frame {
  position: relative;
  overflow: hidden;
}
.media-frame::before {
  content: '';
  display: block;
  padding-top: 62.5%;
}
.media-frame--wide::before { padding-top: 50%; }
.media-frame--square::before { padding-top: 100%; }
.media-frame--tall::before { padding-top: 130%; }
.media-frame--slant {
  clip-path: polygon(0 0, calc(100% - 24px) 0, 100% 100%, 24px 100%);
}
.media-media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- 滚动显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity .7s var(--ease-out),
    transform .7s var(--ease-out);
  transition-delay: var(--reveal-delay, 0s);
}
[data-reveal="1"] { --reveal-delay: .08s; }
[data-reveal="2"] { --reveal-delay: .16s; }
[data-reveal="3"] { --reveal-delay: .24s; }
[data-reveal][data-reveal-visible] {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 响应式：平板 / 手机 ---------- */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 820px) {
  :root { --rail-w: 0px; }
  .site-header {
    position: sticky;
    top: 0;
    bottom: auto;
    width: 100%;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid rgba(168,184,207,.1);
    overflow: visible;
  }
  .site-header::before { display: none; }
  .header-bar {
    height: var(--header-h);
    padding: 0 14px 0 16px;
    border-bottom: 0;
  }
  .nav-toggle { display: inline-flex; }
  .site-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: calc(100vh - var(--header-h));
    overflow-y: auto;
    background: var(--navy-dark);
    padding: 8px 0 20px;
    border-bottom: 1px solid rgba(168,184,207,.12);
    box-shadow: 0 20px 40px rgba(0,0,0,.35);
    flex: none;
    display: none;
  }
  [data-nav][data-open="true"] { display: flex; }
  .nav-link { min-height: 50px; padding: 0 22px; }
  .nav-note,
  .header-rail-label { display: none; }
  .skip-link { left: 12px; top: 12px; }
  .scroll-progress { left: 0; }
  .site-main,
  .site-footer { margin-left: 0; }
  .grid-2,
  .grid-3 { grid-template-columns: 1fr; }
  .brand-name { font-size: 17px; }
}
@media (max-width: 560px) {
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .nav-en,
  .nav-toggle-label { display: none; }
}
@media (max-height: 700px) and (min-width: 821px) {
  .header-rail-label,
  .nav-note { display: none; }
  .nav-link { min-height: 40px; }
}

/* ---------- 减少动态 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    transition-delay: 0ms !important;
  }
  [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .scroll-progress { opacity: 0; }
  .skip-link { transition: none; }
}