/* ==========================================================================
   风动体育 / BREEZE ARENA — 共享结构样式
   负责人：品牌创意总监组 · 适用全站页面
   ========================================================================== */

/* 1. Reset ---------------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body,
h1, h2, h3, h4, h5,
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%; }

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

table { border-collapse: collapse; }

/* 2. Tokens --------------------------------------------------------------- */
:root {
  --ink: #071A2B;
  --ink-2: #0E2A40;
  --mint: #00C2A8;
  --mint-deep: #007A6E;
  --orange: #FF5A2A;
  --lime: #D7FF3F;
  --fog: #F4F8F7;
  --steel: #8FA3AE;
  --slate: #4B5A63;
  --line: #DCE9E6;
  --line-dark: rgba(220, 233, 230, .18);
  --line-dark-soft: rgba(220, 233, 230, .09);

  --rail-w: 0px;
  --gutter: clamp(16px, 4vw, 48px);
  --max: 1280px;

  --font-display: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", "Roboto Mono", ui-monospace, SFMono-Regular, Consolas, monospace;

  --ease: cubic-bezier(.2, .7, .2, 1);
  --header-offset: 112px;
}

/* 3. 基础排版 -------------------------------------------------------------- */
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  background-color: var(--ink);
  color: var(--fog);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -.02em;
}

::selection {
  background: var(--lime);
  color: var(--ink);
}

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

.section--fog :focus-visible,
.panel--fog :focus-visible {
  outline-color: var(--mint-deep);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

.title-xl {
  font-size: clamp(34px, 5.2vw, 64px);
  font-weight: 900;
  letter-spacing: -.04em;
  line-height: 1.04;
}

.title-lg {
  font-size: clamp(26px, 3.4vw, 40px);
  font-weight: 900;
  letter-spacing: -.035em;
}

.title-md {
  font-size: clamp(19px, 2.2vw, 28px);
  font-weight: 800;
  letter-spacing: -.02em;
}

.lead {
  font-size: clamp(16px, 1.4vw, 19px);
  line-height: 1.7;
  color: var(--steel);
  max-width: 62ch;
}

.section--fog .lead,
.panel--fog .lead {
  color: var(--slate);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--mint);
  transition: color .25s var(--ease);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 2px;
  background: currentColor;
}

.section--fog .eyebrow,
.panel--fog .eyebrow {
  color: var(--mint-deep);
}

.prose {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.78;
}

.prose > * + * { margin-top: 1em; }

.prose h2 {
  font-size: clamp(20px, 2vw, 26px);
  margin-top: 1.8em;
}

.prose h3 {
  font-size: 18px;
  margin-top: 1.6em;
}

.prose ul,
.prose ol {
  padding-left: 1.2em;
}

.prose ul li { list-style: none; position: relative; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: -1.1em;
  top: .78em;
  width: 8px;
  height: 1px;
  background: var(--mint);
}

.prose ol { list-style: decimal; }
.prose a { color: var(--mint); border-bottom: 1px solid currentColor; }
.section--fog .prose a { color: var(--mint-deep); }

/* 4. 布局容器与网格 -------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.container-narrow {
  width: 100%;
  max-width: 880px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(48px, 7vw, 96px);
}

.section--tight { padding-block: clamp(32px, 4vw, 56px); }
.section--fog { background: var(--fog); color: var(--ink); }
.section--ink2 { background: var(--ink-2); }

.grid {
  display: grid;
  gap: clamp(16px, 2vw, 28px);
  grid-template-columns: repeat(12, minmax(0, 1fr));
}

.col-3 { grid-column: span 3; }
.col-4 { grid-column: span 4; }
.col-5 { grid-column: span 5; }
.col-6 { grid-column: span 6; }
.col-7 { grid-column: span 7; }
.col-8 { grid-column: span 8; }
.col-9 { grid-column: span 9; }
.col-12 { grid-column: span 12; }

.rule {
  height: 1px;
  border: 0;
  background: var(--line-dark);
}

.rule--light { background: var(--line); }

/* 5. 通用组件 ------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .04em;
  border: 1px solid transparent;
  border-radius: 0;
  cursor: pointer;
  transition: background-color .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.btn-live {
  background: var(--lime);
  color: var(--ink);
  border-color: var(--lime);
}
.btn-live:hover,
.btn-live:focus-visible { background: var(--fog); border-color: var(--fog); }

.btn-mint {
  background: var(--mint);
  color: var(--ink);
  border-color: var(--mint);
}
.btn-mint:hover,
.btn-mint:focus-visible { background: var(--lime); border-color: var(--lime); }

.btn-consult {
  background: var(--orange);
  color: var(--ink);
  border-color: var(--orange);
}
.btn-consult:hover,
.btn-consult:focus-visible { background: var(--lime); border-color: var(--lime); }

.btn-ghost {
  background: transparent;
  color: var(--fog);
  border-color: var(--steel);
}
.btn-ghost:hover,
.btn-ghost:focus-visible { border-color: var(--mint); color: var(--lime); }

.btn-ghost--ink {
  background: transparent;
  color: var(--ink);
  border-color: var(--slate);
}
.btn-ghost--ink:hover,
.btn-ghost--ink:focus-visible { border-color: var(--mint-deep); color: var(--mint-deep); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .06em;
  border: 1px solid currentColor;
  border-radius: 0;
  line-height: 1.6;
}

.tag--live { background: var(--lime); color: var(--ink); border-color: var(--lime); }
.tag--mint { background: var(--mint); color: var(--ink); border-color: var(--mint); }
.tag--orange { background: var(--orange); color: var(--ink); border-color: var(--orange); }

.panel {
  background: var(--ink-2);
  border: 1px solid var(--line-dark);
  padding: clamp(18px, 2.4vw, 30px);
}

.panel--fog {
  background: var(--fog);
  color: var(--ink);
  border-color: var(--line);
}

.card {
  position: relative;
  display: block;
  background: var(--ink-2);
  border: 1px solid var(--line-dark);
  padding: clamp(16px, 2vw, 24px);
  transition: border-color .2s var(--ease), transform .2s var(--ease);
}

.card:hover,
.card:focus-within {
  border-color: var(--mint);
  transform: translateY(-2px);
}

/* 图片容器：页面阶段直接放入 img，用 data-ratio 控制比例 */
.media {
  position: relative;
  overflow: hidden;
  background: var(--ink-2);
  border: 1px solid var(--line-dark);
}

.media img,
.media video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media[data-ratio="16-9"] { aspect-ratio: 16 / 9; }
.media[data-ratio="21-9"] { aspect-ratio: 21 / 9; }
.media[data-ratio="4-3"] { aspect-ratio: 4 / 3; }
.media[data-ratio="1-1"] { aspect-ratio: 1 / 1; }
.media[data-ratio="3-4"] { aspect-ratio: 3 / 4; }

.media-corner {
  position: absolute;
  top: 0;
  right: 0;
  width: 42px;
  height: 42px;
  background: linear-gradient(225deg, var(--mint) 0 50%, transparent 50%);
  opacity: .92;
  pointer-events: none;
}

.media-caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--steel);
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-top: 14px;
  border-top: 1px solid var(--line-dark);
}

.section--fog .stat { border-top-color: var(--line); }

.stat-value {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4vw, 48px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--lime);
}

.section--fog .stat-value { color: var(--mint-deep); }

.stat-label {
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--steel);
}

.section--fog .stat-label { color: var(--slate); }

/* 面包屑 */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--steel);
}

.crumbs a { color: var(--steel); }
.crumbs a:hover { color: var(--lime); }
.crumbs-sep { color: var(--mint); }
.crumbs [aria-current="page"] { color: var(--fog); }

/* 6. 头部框架 ------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  background: var(--ink);
  border-bottom: 1px solid var(--line-dark);
}

.skip-link {
  position: fixed;
  top: -80px;
  left: calc(var(--rail-w) + 12px);
  z-index: 999;
  padding: 12px 18px;
  background: var(--lime);
  color: var(--ink);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .04em;
  transition: top .18s var(--ease);
}

.skip-link:focus { top: 10px; }

.read-progress {
  position: fixed;
  top: 0;
  left: var(--rail-w);
  right: 0;
  height: 3px;
  z-index: 120;
  background: rgba(220, 233, 230, .12);
  pointer-events: none;
}

.read-progress-bar {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--mint), var(--lime));
  transition: width .12s linear;
}

.header-utility {
  background: var(--ink-2);
  border-bottom: 1px solid var(--line-dark);
}

.header-utility-inner {
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
  min-height: 34px;
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 12px;
  color: var(--steel);
}

.live-line {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--fog);
  font-weight: 700;
  letter-spacing: .02em;
  white-space: nowrap;
}

.live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 0 rgba(215, 255, 63, .55);
  animation: livePulse 2.4s var(--ease) infinite;
}

.live-label { color: var(--fog); }

.live-time {
  color: var(--lime);
  font-size: 12px;
  letter-spacing: .06em;
}

@keyframes livePulse {
  0% { box-shadow: 0 0 0 0 rgba(215, 255, 63, .55); }
  70% { box-shadow: 0 0 0 7px rgba(215, 255, 63, 0); }
  100% { box-shadow: 0 0 0 0 rgba(215, 255, 63, 0); }
}

.utility-note {
  color: var(--steel);
  letter-spacing: .06em;
}

.utility-list {
  display: flex;
  align-items: center;
  gap: 18px;
  margin-left: auto;
}

.utility-link {
  color: var(--fog);
  font-weight: 700;
  letter-spacing: .04em;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

.utility-link:hover,
.utility-link:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.header-main { background: var(--ink); }

.header-main-inner {
  max-width: var(--max);
  margin-inline: auto;
  padding: 12px var(--gutter);
  min-height: 74px;
  display: flex;
  align-items: center;
  gap: 24px;
}

/* 品牌锁定 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex: 0 0 auto;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  background: var(--mint);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 900;
  line-height: 1;
  clip-path: polygon(0 0, 100% 0, 100% 68%, 68% 100%, 0 100%);
}

.brand-text { display: block; }

.brand-name {
  display: block;
  font-size: 18px;
  font-weight: 900;
  letter-spacing: .04em;
  color: var(--fog);
  line-height: 1.1;
}

.brand-sub {
  display: block;
  margin-top: 3px;
  font-size: 10px;
  letter-spacing: .26em;
  color: var(--mint);
}

.brand-footer .brand-name { font-size: 16px; }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  margin-left: auto;
  padding: 10px 12px;
  border: 1px solid var(--line-dark);
  color: var(--fog);
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .18em;
}

.nav-toggle-bars {
  display: grid;
  gap: 4px;
  width: 18px;
}

.nav-toggle-bar {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--lime);
  transition: transform .2s var(--ease), opacity .2s var(--ease);
}

.nav-toggle-text { line-height: 1; }

.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); }

/* 主导航 */
.site-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2px;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 12px;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .02em;
  color: var(--fog);
  border-bottom: 2px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--mint);
}

.nav-index {
  font-size: 10px;
  letter-spacing: .08em;
  color: var(--steel);
  transition: color .18s var(--ease);
}

.nav-link[aria-current="page"] {
  color: var(--lime);
  border-bottom-color: var(--mint);
}

.nav-link[aria-current="page"] .nav-index { color: var(--mint); }

.header-cta {
  margin-left: 14px;
  flex: 0 0 auto;
}

/* 7. 左侧装备挂带 --------------------------------------------------------- */
.rail {
  display: none;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: var(--rail-w);
  z-index: 95;
  background: var(--ink-2);
  border-right: 1px solid var(--line-dark);
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 14px 0 18px;
}

.rail-label {
  writing-mode: vertical-rl;
  font-size: 9px;
  letter-spacing: .3em;
  color: var(--steel);
  text-transform: uppercase;
}

.rail-list {
  display: flex;
  flex-direction: column;
  gap: 0;
  width: 100%;
  border-top: 1px solid var(--line-dark-soft);
}

.rail-item { border-bottom: 1px solid var(--line-dark-soft); }

.rail-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 14px 4px;
  color: var(--fog);
  font-size: 13px;
  font-weight: 700;
  transition: background-color .18s var(--ease), color .18s var(--ease);
}

.rail-link:hover,
.rail-link:focus-visible {
  background: rgba(0, 194, 168, .14);
  color: var(--lime);
}

.rail-link[aria-current="page"] {
  background: rgba(0, 194, 168, .16);
  color: var(--lime);
}

.rail-index {
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--mint);
}

.rail-text { writing-mode: vertical-rl; letter-spacing: .16em; }

.rail-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--orange);
  animation: livePulse 2.4s var(--ease) infinite;
}

/* 8. 页脚 ---------------------------------------------------------------- */
.site-footer {
  position: relative;
  z-index: 1;
  background: var(--ink);
  color: var(--fog);
  border-top: 1px solid var(--line-dark);
}

.footer-stripe {
  height: 6px;
  background: linear-gradient(90deg,
    var(--mint) 0 34%,
    var(--orange) 34% 58%,
    var(--lime) 58% 66%,
    var(--ink-2) 66% 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr .8fr .8fr 1.35fr;
  gap: clamp(24px, 4vw, 56px);
  padding-block: clamp(40px, 6vw, 72px);
}

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

.footer-summary {
  margin-block: 18px 22px;
  max-width: 36ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--steel);
}

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

.footer-col-title {
  margin-bottom: 14px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--mint);
}

.footer-list { display: grid; gap: 10px; }

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--fog);
  transition: color .18s var(--ease);
}

.footer-link::before {
  content: "";
  width: 12px;
  height: 1px;
  background: var(--mint);
  flex: 0 0 auto;
}

.footer-link:hover,
.footer-link:focus-visible { color: var(--lime); }

.footer-contact { display: grid; gap: 12px; }

.contact-line { display: grid; gap: 2px; }

.contact-label {
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .2em;
  color: var(--steel);
  text-transform: uppercase;
}

.contact-mono {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.5;
  color: var(--lime);
  word-break: break-word;
}

.contact-text {
  font-size: 13px;
  line-height: 1.6;
  color: var(--fog);
}

.footer-hours {
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--steel);
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 20px 28px;
  border-top: 1px solid var(--line-dark);
  font-size: 12px;
  color: var(--steel);
}

.footer-icp { letter-spacing: .04em; }

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.footer-legal-link {
  color: var(--steel);
  letter-spacing: .04em;
  transition: color .18s var(--ease);
}

.footer-legal-link:hover,
.footer-legal-link:focus-visible { color: var(--lime); }

.footer-copy {
  font-family: var(--font-mono);
  letter-spacing: .04em;
  color: var(--steel);
}

/* 9. 章节滚动高亮 ---------------------------------------------------------- */
[data-section] {
  scroll-margin-top: var(--header-offset);
  transition: background-color .3s var(--ease);
}

[data-section].is-current .eyebrow {
  color: var(--lime);
}

.section--fog[data-section].is-current .eyebrow {
  color: var(--mint-deep);
}

/* 10. 响应式 -------------------------------------------------------------- */
@media (max-width: 1023px) {
  .nav-toggle { display: inline-flex; }

  .site-nav {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 80;
    margin: 0;
    padding: 132px var(--gutter) 48px;
    background: var(--ink-2);
    overflow-y: auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }

  .site-nav[data-open] { display: flex; }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    border-top: 1px solid var(--line-dark);
  }

  .nav-item { border-bottom: 1px solid var(--line-dark); }

  .nav-link {
    width: 100%;
    justify-content: flex-start;
    padding: 18px 4px;
    font-size: 20px;
    border-bottom: 0;
    border-left: 2px solid transparent;
  }

  .nav-link[aria-current="page"] {
    border-left-color: var(--mint);
    border-bottom-color: transparent;
    padding-left: 12px;
  }

  .nav-index { font-size: 12px; }

  .header-cta {
    margin: 28px 0 0;
    width: 100%;
    padding: 16px;
    font-size: 15px;
  }

  body[data-nav-open] { overflow: hidden; }

  .header-main-inner { gap: 16px; }
  .utility-note { display: none; }
}

@media (min-width: 1200px) {
  :root { --rail-w: 72px; }
  body { padding-left: var(--rail-w); }
  .rail { display: flex; }
}

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8, .col-9 {
    grid-column: span 12;
  }
}

@media (max-width: 560px) {
  .header-utility-inner {
    flex-wrap: wrap;
    gap: 10px 16px;
    padding-block: 8px;
  }

  .utility-list { gap: 14px; margin-left: 0; }

  .brand-name { font-size: 16px; }

  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 32px; }

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

  .site-nav { padding-top: 148px; }
}

/* 11. 无障碍降级 ---------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }

  .read-progress-bar { transition: none; }
  .live-dot, .rail-dot { animation: none; }
}