/* ============================================================
   亿博体育 · 共享站皮肤 /assets/site.css
   母题：凌晨开球的转播控制室
   ============================================================ */

*, *::before, *::after { box-sizing: border-box; }

:root {
  --ink:        #0C1F1A;
  --ink-2:      #12332B;
  --cold:       #070B0C;
  --neon:       #4BE3B0;
  --neon-dim:   #1E6F5C;
  --amber:      #F2B33D;
  --amber-lt:   #F7D98A;
  --paper:      #F4EFE4;
  --paper-line: #D8CFBB;
  --white:      #F2F6F4;
  --mute:       #8FA39C;
  --coral:      #E2574C;
  --scroll-text: #CFE8DE;

  --rail:    92px;
  --topbar:  58px;
  --max:     1180px;
  --max-narrow: 760px;
  --pad:     clamp(18px, 4vw, 44px);

  --mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;
  --serif: "Songti SC", "Source Han Serif SC", "Noto Serif CJK SC", Georgia, "Times New Roman", serif;

  --line:      rgba(75, 227, 176, .16);
  --line-soft: rgba(143, 163, 156, .22);
  --ink-text:  #1B2B26;
}

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

body {
  margin: 0;
  padding-top: var(--topbar);
  background: var(--ink);
  color: var(--white);
  font-family: var(--sans);
  font-size: 15.5px;
  font-weight: 400;
  line-height: 1.75;
  letter-spacing: .006em;
  overflow-wrap: break-word;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* ---------- 基础排版 ---------- */
h1, h2, h3, h4, h5, h6 {
  margin: 0 0 .6em;
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -.008em;
  color: inherit;
}
h1 { font-size: clamp(27px, 4.4vw, 42px); }
h2 { font-size: clamp(21px, 3.1vw, 31px); }
h3 { font-size: clamp(17.5px, 2.1vw, 23px); }
h4 { font-size: 16.5px; }
p  { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.25em; }
li { margin-bottom: .35em; }
img { max-width: 100%; display: block; }
button { font: inherit; }
strong { font-weight: 600; color: var(--white); }
small { font-size: 12.5px; color: var(--mute); }
hr { border: 0; height: 1px; background: var(--line); margin: 2em 0; }

a { color: var(--neon); text-decoration: none; transition: color .16s ease; }
a:hover { color: var(--white); }

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

::selection { background: rgba(75, 227, 176, .3); color: #fff; }

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: -70px;
  left: 14px;
  z-index: 130;
  padding: 11px 18px;
  background: var(--neon);
  color: #04120E;
  font-size: 14px;
  font-weight: 600;
  border-radius: 2px;
  transition: top .2s ease;
}
.skip-link:focus { top: 14px; color: #04120E; }

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

.wrap { width: 100%; max-width: var(--max); margin-inline: auto; padding-inline: var(--pad); }
.wrap--narrow { max-width: var(--max-narrow); }
.wrap--wide { max-width: 1420px; }

.section { padding-block: clamp(38px, 6vw, 82px); }
.section--tight { padding-block: clamp(22px, 3.4vw, 44px); }
.section--flush-top { padding-top: 0; }

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

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .22em;
  color: var(--neon);
}
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: var(--neon);
  flex: none;
}

.display {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(19px, 2.4vw, 26px);
  line-height: 1.5;
  letter-spacing: .004em;
  margin: 0 0 1em;
}

.mono-num {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  font-weight: 600;
  letter-spacing: -.012em;
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid var(--line-soft);
  border-radius: 2px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--mute);
  white-space: nowrap;
}
.tag--neon { border-color: rgba(75, 227, 176, .48); color: var(--neon); background: rgba(75, 227, 176, .07); }
.tag--amber { border-color: rgba(242, 179, 61, .5); color: var(--amber); background: rgba(242, 179, 61, .09); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: 2px;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .02em;
  line-height: 1.4;
  cursor: pointer;
  transition: background .16s ease, color .16s ease, border-color .16s ease;
}
.btn--primary { background: var(--neon); color: #04120E; }
.btn--primary:hover { background: var(--white); color: #04120E; }
.btn--amber { background: var(--amber); color: #241703; }
.btn--amber:hover { background: var(--amber-lt); color: #241703; }
.btn--ghost { background: transparent; border-color: var(--line); color: var(--white); }
.btn--ghost:hover { border-color: var(--neon); color: var(--neon); }

/* ---------- 面包屑 ---------- */
.crumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
  letter-spacing: .06em;
  color: var(--mute);
}
.crumb a { color: var(--mute); }
.crumb a:hover { color: var(--neon); }
.crumb__sep { color: var(--neon-dim); }

/* ---------- 网格 ---------- */
.grid-2, .grid-3, .grid-split {
  display: grid;
  gap: clamp(18px, 3vw, 38px);
  grid-template-columns: minmax(0, 1fr);
}
@media (min-width: 760px) {
  .grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-split { grid-template-columns: 1.4fr .6fr; }
}
@media (min-width: 1080px) {
  .grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .grid-split { grid-template-columns: 2fr 1fr; }
}

/* ---------- 暖纸阅读面 ---------- */
.paper {
  background: var(--paper);
  color: var(--ink-text);
  border-radius: 3px;
  padding: clamp(22px, 4vw, 48px);
}
.paper h1, .paper h2, .paper h3, .paper h4 { color: var(--ink); }
.paper strong { color: var(--ink); }
.paper a { color: #12614F; text-decoration: underline; text-underline-offset: 3px; }
.paper a:hover { color: var(--ink); }
.paper hr { background: var(--paper-line); }
.paper th, .paper td { border-color: var(--paper-line); }
.paper .eyebrow { color: #12614F; }
.paper .eyebrow::before { background: #12614F; }
.paper .tag { border-color: var(--paper-line); color: #4C605A; }
.paper .tag--amber { border-color: #C99525; color: #7A5607; background: rgba(242, 179, 61, .2); }
.paper .tag--neon { border-color: #1E6F5C; color: #12614F; background: rgba(30, 111, 92, .1); }

/* ---------- 锚点目录 ---------- */
.toc {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
}
.toc__link {
  display: block;
  padding: 7px 0 7px 13px;
  border-left: 1px solid var(--line-soft);
  color: var(--mute);
  letter-spacing: .03em;
  transition: color .16s ease, border-color .16s ease;
}
.toc__link:hover { color: var(--white); }
.toc__link.is-active,
.toc__link[aria-current="true"] {
  color: var(--neon);
  border-left-color: var(--neon);
}
.paper .toc__link { color: #5C6E69; border-left-color: var(--paper-line); }
.paper .toc__link.is-active,
.paper .toc__link[aria-current="true"] { color: #12614F; border-left-color: #12614F; }

/* ---------- 主题筛选按钮 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 0;
  margin: 0 0 22px;
  border: 0;
}
.filter-btn {
  padding: 7px 15px;
  background: transparent;
  border: 1px solid rgba(75, 227, 176, .26);
  border-radius: 999px;
  color: var(--mute);
  font-size: 13px;
  letter-spacing: .04em;
  cursor: pointer;
  transition: color .16s ease, border-color .16s ease, background .16s ease;
}
.filter-btn:hover { color: var(--white); border-color: rgba(75, 227, 176, .6); }
.filter-btn.is-active,
.filter-btn[aria-pressed="true"] {
  background: var(--neon);
  border-color: var(--neon);
  color: #04120E;
  font-weight: 600;
}

/* ---------- 图片容器（页面阶段放占位/实拍图） ---------- */
.media {
  position: relative;
  display: block;
  width: 100%;
  overflow: hidden;
  border-radius: 3px;
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 92% at 18% 8%, rgba(75, 227, 176, .16), transparent 62%),
    linear-gradient(158deg, #10302A 0%, #0A1915 56%, #070B0C 100%);
}
.media::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  opacity: .5;
  background-image:
    linear-gradient(to right, rgba(75, 227, 176, .10) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(75, 227, 176, .10) 1px, transparent 1px);
  background-size: 48px 48px;
}
.media__img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media__caption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  z-index: 3;
  padding: 22px 16px 13px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--white);
  background: linear-gradient(to top, rgba(7, 11, 12, .9), rgba(7, 11, 12, 0));
}
.media--21x9 { aspect-ratio: 21 / 9; }
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3  { aspect-ratio: 4 / 3; }
.media--3x4  { aspect-ratio: 3 / 4; }
.media--1x1  { aspect-ratio: 1 / 1; }
.media--fill { height: 100%; }

/* ---------- 滚动显现 ---------- */
.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .38s ease-out, transform .38s ease-out;
}
.js-ready [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ============================================================
   头部：侧边轨道 / 移动顶条
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 90;
  background: var(--cold);
  border-bottom: 1px solid var(--line);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: var(--topbar);
  padding: 0 16px;
}
.rail-progress { display: none; }

/* 品牌 */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--white);
  flex: none;
}
.brand__glyph {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border: 1px solid var(--neon);
  border-radius: 2px;
  background: rgba(75, 227, 176, .09);
  color: var(--neon);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0;
  line-height: 1;
}
.brand__text { display: flex; flex-direction: column; line-height: 1.18; }
.brand__name { font-size: 14.5px; font-weight: 600; letter-spacing: .04em; }
.brand__sub {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .2em;
  color: var(--mute);
}

/* 汉堡 */
.nav-toggle {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px; height: 42px;
  padding: 0 10px;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 2px;
  cursor: pointer;
  flex: none;
}
.nav-toggle__bar {
  display: block;
  height: 1.5px;
  background: var(--neon);
  border-radius: 2px;
  transition: transform .22s ease, opacity .22s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(6.5px) 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(-6.5px) rotate(-45deg); }

/* 导航：移动端底部抽屉 */
.site-nav {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 95;
  max-height: 82vh;
  overflow-y: auto;
  padding: 14px 18px calc(24px + env(safe-area-inset-bottom, 0px));
  background: var(--cold);
  border-top: 1px solid rgba(75, 227, 176, .3);
  box-shadow: 0 -20px 44px rgba(0, 0, 0, .55);
  transform: translateY(102%);
  transition: transform .3s cubic-bezier(.32, .72, 0, 1);
}
.site-nav[data-open] { transform: translateY(0); }

.site-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.site-nav__link {
  display: block;
  padding: 13px 12px;
  border-left: 2px solid transparent;
  color: var(--white);
  font-size: 16px;
  letter-spacing: .02em;
  transition: background .16s ease, color .16s ease, border-color .16s ease;
}
.site-nav__link:hover { background: rgba(75, 227, 176, .08); color: var(--neon); }
.site-nav__link[aria-current="page"] {
  color: var(--neon);
  border-left-color: var(--neon);
  background: rgba(75, 227, 176, .1);
}

.nav-extra {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.nav-extra__ctl { width: 100%; }
.nav-extra__link { font-size: 14.5px; color: var(--neon); padding: 2px 0; }
.nav-extra__note { margin: 0; font-size: 12.5px; color: var(--mute); }

.header-cta { display: none; }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  margin-top: clamp(38px, 6vw, 76px);
  background: var(--cold);
  border-top: 1px solid var(--line);
}
.footer-inner {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding: clamp(34px, 5vw, 58px) var(--pad) 30px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
}
.footer-brand__link {
  display: inline-flex;
  align-items: center;
  gap: 11px;
  color: var(--white);
  margin-bottom: 12px;
}
.footer-brand__glyph {
  display: grid;
  place-items: center;
  width: 34px; height: 34px;
  border: 1px solid var(--neon);
  border-radius: 2px;
  background: rgba(75, 227, 176, .09);
  color: var(--neon);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  flex: none;
}
.footer-brand__name { font-size: 15px; font-weight: 600; letter-spacing: .04em; }
.footer-brand__note {
  margin: 0;
  max-width: 34ch;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mute);
}

.footer-nav {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
}
.footer-nav__title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .2em;
  color: var(--mute);
}
.footer-nav__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.footer-nav__list a {
  font-size: 14.5px;
  color: var(--white);
  transition: color .16s ease;
}
.footer-nav__list a:hover { color: var(--neon); }

.footer-meta p { margin: 0; }
.footer-meta__row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  margin-bottom: 10px !important;
  font-size: 14px;
  color: var(--white);
  word-break: break-all;
}
.footer-meta__key {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mute);
  min-width: 62px;
  padding-top: 2px;
}
.footer-meta__note {
  margin-top: 16px !important;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--mute);
}

.footer-bottom {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding: 16px var(--pad) 22px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--mute);
}
.footer-bottom p { margin: 0; }
.footer-bottom__legal { font-family: var(--mono); }

/* ============================================================
   响应式：≥760 平板，≥1024 桌面侧轨
   ============================================================ */
@media (min-width: 760px) {
  .footer-inner { grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr); }
  .footer-nav { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .footer-inner { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1.5fr) minmax(0, 1.15fr); }
}

@media (min-width: 1024px) {
  body { padding-top: 0; padding-left: var(--rail); }

  .site-header {
    right: auto;
    bottom: 0;
    width: var(--rail);
    border-bottom: 0;
    border-right: 1px solid var(--line);
  }
  .header-inner {
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    height: 100%;
    padding: 20px 6px 18px;
    overflow-y: auto;
  }
  .rail-progress {
    display: block;
    position: absolute;
    left: 0; top: 0;
    width: 2px;
    height: 100%;
    background: linear-gradient(180deg, var(--neon), var(--neon-dim) 78%, transparent);
    opacity: .85;
    transform: scaleY(0);
    transform-origin: top;
  }

  .brand { flex-direction: column; gap: 8px; }
  .brand__text { display: none; }
  .brand__glyph { width: 40px; height: 40px; font-size: 17px; }

  .nav-toggle { display: none; }

  .site-nav {
    position: static;
    transform: none;
    max-height: none;
    overflow: visible;
    padding: 0;
    background: transparent;
    border: 0;
    box-shadow: none;
    transition: none;
  }
  .site-nav__list { align-items: center; gap: 2px; }
  .site-nav__link {
    writing-mode: vertical-rl;
    padding: 12px 9px;
    border-left: 1px solid transparent;
    border-bottom: 0;
    font-size: 13px;
    letter-spacing: .16em;
    color: var(--mute);
  }
  .site-nav__link:hover { color: var(--white); background: rgba(75, 227, 176, .08); }
  .site-nav__link[aria-current="page"] {
    color: var(--neon);
    background: rgba(75, 227, 176, .12);
    border-left-color: var(--neon);
  }
  .nav-extra { display: none; }

  .header-cta {
    display: block;
    writing-mode: vertical-rl;
    padding: 15px 9px;
    background: var(--amber);
    color: #241703;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: .16em;
    border-radius: 2px;
    transition: background .16s ease;
  }
  .header-cta:hover { background: var(--amber-lt); color: #241703; }
}

/* ============================================================
   动效降级
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  .js-ready [data-reveal] { opacity: 1; transform: none; }
  .site-nav { transition: none; }
}