/* =========================================================
   im体育登录 · 共享样式表 /assets/site.css
   夜间球场 × 编辑部工作台：蓝图网格 / 切角面板 / 数据标记
   ========================================================= */

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

html, body { margin: 0; padding: 0; }

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

body {
  min-height: 100%;
  background-color: #0B2A23;
  background-image:
    linear-gradient(to right, rgba(216, 210, 196, .045) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(216, 210, 196, .045) 1px, transparent 1px);
  background-size: 76px 76px;
  background-attachment: fixed;
  color: #F4F1E8;
  font-family: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  font-size: 16px;
  line-height: 1.8;
  font-weight: 400;
  letter-spacing: .01em;
  overflow-x: hidden;
}

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

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

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

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

h1, h2, h3, h4, h5, h6 { margin: 0; font-weight: 400; line-height: 1.15; }

p { margin: 0; }

table { border-collapse: collapse; width: 100%; }

::selection { background: #F2A93B; color: #20160A; }

:focus-visible { outline: 2px solid #F2A93B; outline-offset: 3px; border-radius: 6px; }

/* ---------- 2. 变量 ---------- */
:root {
  --ink-900: #0B2A23;
  --ink-800: #123F33;
  --pitch: #2E7D4F;
  --pitch-bright: #4CAF6D;
  --amber: #F2A93B;
  --away: #C0392B;
  --indigo: #3E3A6E;
  --paper: #F4F1E8;
  --line: #D8D2C4;
  --ink: #1A1A1A;

  --bg: #0B2A23;
  --bg-raised: #123F33;
  --bg-sunken: #081F1A;

  --fg: #F4F1E8;
  --fg-muted: rgba(244, 241, 232, .66);
  --fg-faint: rgba(244, 241, 232, .44);
  --rule: rgba(216, 210, 196, .18);
  --rule-strong: rgba(216, 210, 196, .34);

  --axis-accent: #F2A93B;

  --shell: 1240px;
  --read: 68ch;
  --radius-pill: 999px;
  --gap: clamp(1rem, 2.4vw, 2rem);

  --font-display: "Barlow Condensed", "Oswald", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", system-ui, sans-serif;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

html[data-axis="city"] { --axis-accent: #8F89D6; }

/* ---------- 3. 无障碍工具 ---------- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 200;
  padding: .7rem 1.15rem;
  border-radius: var(--radius-pill);
  background: var(--amber);
  color: #1A1A1A;
  font-family: var(--font-mono);
  font-size: .82rem;
  letter-spacing: .06em;
  transition: top .18s ease;
}
.skip-link:focus { top: 1rem; }

/* ---------- 4. 布局容器 ---------- */
.shell,
.shell--narrow { margin-inline: auto; }

.shell { width: min(100% - 2.25rem, var(--shell)); }

.shell--narrow { width: min(100% - 2.25rem, 880px); }

/* ---------- 5. 头部：悬浮胶囊导航 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 90;
  padding: 14px 0 14px;
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  flex-wrap: nowrap;
  gap: .9rem;
  width: min(100% - 1.5rem, var(--shell));
  margin-inline: auto;
  padding: .6rem .7rem .6rem 1rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius-pill);
  background: rgba(9, 32, 26, .82);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  box-shadow: 0 22px 46px -30px rgba(0, 0, 0, .95);
  transition: padding .22s ease, background-color .22s ease, border-color .22s ease;
}

.site-header[data-condensed] .header-inner {
  padding: .34rem .4rem .34rem .85rem;
  background: rgba(9, 32, 26, .95);
  border-color: var(--rule-strong);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  flex: 0 0 auto;
  padding: .15rem .35rem .15rem .1rem;
  border-radius: 14px;
}

.brand-glyph {
  position: relative;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  border-radius: 9px;
  background: linear-gradient(140deg, var(--pitch) 0%, var(--pitch-bright) 100%);
  box-shadow: inset 0 0 0 1px rgba(244, 241, 232, .18);
}

.brand-glyph__line {
  display: block;
  width: 13px;
  height: 2px;
  border-radius: 1px;
  background: #06231A;
  transform: rotate(-38deg);
  box-shadow: 0 5px 0 #06231A, 0 -5px 0 #06231A;
}

.brand-words { display: flex; flex-direction: column; line-height: 1.1; }

.brand-words__name {
  font-family: var(--font-display);
  font-size: 1.06rem;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--paper);
}

.brand-words__meta {
  font-family: var(--font-mono);
  font-size: .6rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--fg-faint);
  white-space: nowrap;
}

.season-meter {
  display: block;
  width: 78px;
  height: 3px;
  margin-top: 5px;
  border-radius: 2px;
  background: rgba(244, 241, 232, .16);
  overflow: hidden;
}

.season-meter__fill {
  display: block;
  height: 100%;
  width: 64%;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--pitch-bright), var(--axis-accent));
}

.main-nav { margin-inline: auto; }

.main-nav__list { display: flex; align-items: center; gap: .15rem; }

.main-nav__list a {
  position: relative;
  display: block;
  padding: .5rem .78rem;
  border-radius: var(--radius-pill);
  font-size: .9rem;
  line-height: 1.2;
  color: var(--fg-muted);
  white-space: nowrap;
  transition: color .18s ease, background-color .18s ease;
}

.main-nav__list a:hover { color: var(--paper); background: rgba(244, 241, 232, .08); }

.main-nav__list a[aria-current="page"] { color: var(--amber); background: rgba(242, 169, 59, .1); }

.main-nav__list a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 3px;
  width: 16px;
  height: 2px;
  border-radius: 1px;
  background: var(--amber);
  transform: translateX(-50%);
}

.header-tools { display: flex; align-items: center; gap: .55rem; flex: 0 0 auto; }

.axis-switch {
  display: inline-flex;
  align-items: center;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--rule);
  border-radius: var(--radius-pill);
  background: rgba(244, 241, 232, .04);
}

.axis-switch__btn {
  padding: .28rem .78rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .12em;
  color: var(--fg-muted);
  transition: background-color .18s ease, color .18s ease;
}

.axis-switch__btn:hover { color: var(--paper); }

.axis-switch__btn[aria-pressed="true"] { background: var(--amber); color: #20160A; }

.nav-toggle {
  display: none;
  align-items: center;
  gap: .5rem;
  padding: .45rem .85rem .45rem .7rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius-pill);
  color: var(--paper);
  font-size: .82rem;
  letter-spacing: .06em;
}

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

.nav-toggle__bars { display: grid; gap: 4px; width: 16px; }

.nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 1px;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

.header-progress {
  position: absolute;
  left: 0;
  right: auto;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 0 2px 2px 0;
  background: linear-gradient(90deg, var(--pitch-bright), var(--axis-accent));
}

/* ---------- 6. 章节与通用排版 ---------- */
.section { padding: clamp(3rem, 7vw, 6rem) 0; }
.section--wide { padding: clamp(3rem, 6vw, 5rem) 0; }
.section--narrow { padding: clamp(2rem, 4vw, 3rem) 0; }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 2rem;
}

.kicker {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--axis-accent);
}

.kicker::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}

.section-title {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(1.9rem, 4.2vw, 3rem);
  line-height: 1.08;
  letter-spacing: .005em;
  color: var(--paper);
}

.lede {
  max-width: var(--read);
  font-size: 1.06rem;
  line-height: 1.75;
  color: var(--fg-muted);
}

.prose { max-width: var(--read); color: var(--fg-muted); }
.prose p + p { margin-top: 1.2em; }

.prose h2 {
  font-family: var(--font-display);
  font-size: 1.65rem;
  line-height: 1.2;
  color: var(--paper);
  margin: 1.8em 0 .6em;
}

.prose h3 {
  font-size: 1.14rem;
  color: var(--paper);
  margin: 1.5em 0 .5em;
}

.prose a {
  color: var(--pitch-bright);
  border-bottom: 1px solid rgba(76, 175, 109, .4);
}

.prose a:hover { color: var(--amber); border-bottom-color: var(--amber); }

.prose strong { color: var(--paper); font-weight: 600; }

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

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 44px;
  padding: .6rem 1.4rem;
  border: 1px solid var(--rule-strong);
  border-radius: var(--radius-pill);
  font-size: .9rem;
  letter-spacing: .04em;
  color: var(--paper);
  background: rgba(244, 241, 232, .03);
  transition: background-color .18s ease, color .18s ease, border-color .18s ease, transform .18s ease;
}

.btn:hover { background: rgba(244, 241, 232, .1); transform: translateY(-1px); }

.btn--primary {
  background: var(--pitch);
  border-color: var(--pitch);
  color: #04170F;
  font-weight: 500;
}

.btn--primary:hover { background: var(--pitch-bright); border-color: var(--pitch-bright); }

.btn--ghost { background: transparent; border-color: var(--rule); }

.btn--ghost:hover { border-color: var(--rule-strong); background: rgba(244, 241, 232, .06); }

/* ---------- 8. 面包屑 ---------- */
.breadcrumb { padding: 1.6rem 0 0; }

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .45rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--fg-faint);
}

.breadcrumb li + li::before { content: "/"; margin-right: .45rem; color: var(--rule-strong); }

.breadcrumb a { color: var(--fg-muted); }

.breadcrumb a:hover { color: var(--amber); }

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

/* ---------- 9. 栅格 / 面板 / 数据 ---------- */
.grid { display: grid; gap: var(--gap); }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.auto-grid { display: grid; gap: var(--gap); grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }

.panel {
  padding: clamp(1.2rem, 2.4vw, 1.8rem);
  border: 1px solid var(--rule);
  border-radius: 14px;
  background: rgba(18, 63, 51, .55);
  transition: transform .2s ease, border-color .2s ease, background-color .2s ease;
}

.panel:hover {
  transform: translateY(-3px);
  border-color: var(--rule-strong);
  background: rgba(18, 63, 51, .78);
}

.cut-panel {
  position: relative;
  padding: clamp(1.2rem, 2.4vw, 1.9rem);
  border: 1px solid var(--rule);
  background: linear-gradient(155deg, rgba(18, 63, 51, .92), rgba(11, 42, 35, .92));
  clip-path: polygon(0 0, calc(100% - 22px) 0, 100% 22px, 100% 100%, 22px 100%, 0 calc(100% - 22px));
}

.stat { display: flex; flex-direction: column; gap: .35rem; }

.stat__num {
  font-family: var(--font-mono);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--amber);
  font-variant-numeric: tabular-nums;
}

.stat__label {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .22rem .7rem;
  border: 1px solid var(--rule);
  border-radius: var(--radius-pill);
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .12em;
  color: var(--fg-muted);
}

.tag--amber { border-color: rgba(242, 169, 59, .5); color: var(--amber); }
.tag--away { border-color: rgba(192, 57, 43, .6); color: #E8705F; }
.tag--indigo { border-color: rgba(143, 137, 214, .55); color: #A9A3EC; }

.index-num {
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .2em;
  color: var(--axis-accent);
  font-variant-numeric: tabular-nums;
}

/* ---------- 10. 图片容器（页面阶段放置占位或图片） ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  border: 1px solid var(--rule);
  border-radius: 12px;
  background: var(--bg-raised);
}

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

.media--16-9 { aspect-ratio: 16 / 9; }
.media--4-3 { aspect-ratio: 4 / 3; }
.media--1-1 { aspect-ratio: 1 / 1; }
.media--wide { aspect-ratio: 21 / 9; }

.media--placeholder {
  background-color: #0F3529;
  background-image:
    repeating-linear-gradient(135deg, rgba(244, 241, 232, .07) 0 1px, transparent 1px 14px),
    linear-gradient(160deg, rgba(46, 125, 79, .35), transparent 62%);
}

.media--placeholder::after {
  content: attr(data-caption);
  position: absolute;
  left: 1rem;
  right: 1rem;
  bottom: .9rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  color: rgba(244, 241, 232, .55);
}

.media__cap {
  display: block;
  padding: .7rem .1rem 0;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .08em;
  color: var(--fg-faint);
}

/* ---------- 11. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 7vw, 6rem);
  background: var(--bg-sunken);
  border-top: 1px solid var(--rule);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 3px;
  background: linear-gradient(90deg, var(--pitch) 0%, var(--pitch-bright) 26%, var(--amber) 52%, var(--away) 74%, var(--indigo) 100%);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.4fr 1fr;
  gap: clamp(1.5rem, 3vw, 2.75rem);
  padding: clamp(2.5rem, 5vw, 4rem) 0 clamp(1.5rem, 3vw, 2.2rem);
}

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

.footer-col--brand { max-width: 22rem; }

.footer-title {
  margin: 0 0 .9rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--axis-accent);
}

.footer-tagline {
  margin-top: 1rem;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--fg-muted);
}

.footer-list { display: grid; gap: .5rem; }

.footer-list a {
  display: inline-block;
  font-size: .94rem;
  color: var(--fg-muted);
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease, transform .18s ease;
}

.footer-list a:hover {
  color: var(--paper);
  border-bottom-color: var(--pitch-bright);
  transform: translateX(3px);
}

.footer-contact { display: grid; gap: .75rem; }

.footer-contact li {
  display: grid;
  grid-template-columns: 4.5rem 1fr;
  gap: .6rem;
  align-items: baseline;
  font-size: .9rem;
  line-height: 1.65;
  color: var(--fg-muted);
}

.footer-contact__key {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.footer-note {
  margin-top: 1rem;
  font-size: .82rem;
  line-height: 1.7;
  color: var(--fg-faint);
}

.footer-legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: .5rem 1.5rem;
  padding: 1rem 0 1.4rem;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--fg-faint);
}

/* ---------- 12. 显现动效 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translate3d(6px, 14px, 0);
  transition: opacity .55s ease, transform .55s cubic-bezier(.22, .61, .36, 1);
}

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

/* ---------- 13. 响应式 ---------- */
@media (max-width: 1080px) {
  .header-inner { padding: .5rem .5rem .5rem .8rem; }

  .header-tools { margin-left: auto; }

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

  .main-nav {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    display: none;
    margin: 0;
    padding: .6rem;
    border: 1px solid var(--rule-strong);
    border-radius: 18px;
    background: rgba(8, 31, 26, .98);
    box-shadow: 0 34px 56px -34px rgba(0, 0, 0, .95);
  }

  .main-nav[data-open] { display: block; }

  .main-nav__list { flex-direction: column; align-items: stretch; gap: .1rem; }

  .main-nav__list a { padding: .8rem 1rem; font-size: .98rem; border-radius: 12px; }

  .main-nav__list a[aria-current="page"]::after { display: none; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .grid--2,
  .grid--3 { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .axis-switch { display: none; }
}

@media (max-width: 620px) {
  .brand-words__meta,
  .season-meter { display: none; }

  .site-header { padding: 10px 0 12px; }

  .footer-grid { grid-template-columns: 1fr; }

  .footer-contact li { grid-template-columns: 1fr; gap: .15rem; }

  .footer-legal { justify-content: flex-start; }

  .lede { font-size: 1rem; }
}

/* ---------- 14. 降低动态偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

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

  .panel:hover,
  .btn:hover,
  .footer-list a:hover { transform: none; }
}