/* =========================================================
   NG体育入口 — /assets/site.css
   共享外壳：刊头、收藏栏、页脚、基础组件
   ========================================================= */

/* ---------- 1. 变量 ---------- */
:root {
  --bg: #05090F;
  --bg-deep: #03060A;
  --panel: #0B141E;
  --panel-soft: #0E1B26;
  --accent: #39FF9E;
  --accent-dim: #1FBE73;
  --cyan: #22D3EE;
  --alert: #FF4D2E;
  --warn: #FFB020;
  --ink: #E9F4F7;
  --muted: #8FA6B4;
  --line: #124A38;
  --line-soft: #16303F;
  --hover: #1E2E3C;

  --f-display: "Oswald", "Barlow Condensed", "Arial Narrow", "PingFang SC", "Microsoft YaHei", sans-serif;
  --f-serif: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --f-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Consolas, "Courier New", monospace;
  --f-body: "PingFang SC", "Inter", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", sans-serif;

  --w-max: 1240px;
  --pad: clamp(16px, 4vw, 40px);
  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 20px;
  --r-pill: 999px;

  --t-fast: 160ms;
  --t-base: 220ms;
  --ease: cubic-bezier(.22, .61, .36, 1);
}

/* ---------- 2. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: 15px;
  line-height: 1.7;
  letter-spacing: .01em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(760px 420px at 84% -10%, rgba(34, 211, 238, .11), transparent 70%),
    radial-gradient(560px 340px at 6% 2%, rgba(57, 255, 158, .08), transparent 72%);
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; height: auto; }
button { font: inherit; color: inherit; background: none; border: 0; }
a { color: inherit; text-decoration: none; }
table { border-collapse: collapse; width: 100%; }

::selection {
  background: var(--accent);
  color: #04140C;
}

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

/* ---------- 3. 排版基座 ---------- */
h1, h2, h3, h4 {
  font-family: var(--f-display);
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.16;
}

h1 { font-size: clamp(30px, 5.2vw, 56px); font-weight: 800; }
h2 { font-size: clamp(22px, 3.2vw, 34px); }
h3 { font-size: clamp(17px, 2vw, 21px); }

.mono {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: -.01em;
}

.num {
  font-family: var(--f-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--accent);
  line-height: 1;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--muted);
  text-transform: uppercase;
}

.eyebrow::before {
  content: "";
  width: 16px;
  height: 1px;
  background: var(--cyan);
}

.lede {
  font-family: var(--f-serif);
  font-weight: 600;
  font-size: clamp(16px, 1.7vw, 20px);
  line-height: 1.78;
  color: var(--ink);
}

.prose {
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: #C6D8E0;
}

.prose p + p { margin-top: 1em; }
.prose h2, .prose h3 { margin-top: 1.6em; margin-bottom: .6em; color: var(--ink); }
.prose a { color: var(--cyan); border-bottom: 1px solid rgba(34, 211, 238, .4); }
.prose a:hover { color: var(--accent); border-bottom-color: var(--accent); }
.prose ul, .prose ol { margin: 1em 0; }
.prose li { position: relative; padding-left: 18px; margin-bottom: .4em; }
.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 7px;
  height: 1px;
  background: var(--accent);
}

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

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

main { position: relative; z-index: 1; }

.section { padding-block: clamp(40px, 6vw, 88px); }
.section--tight { padding-block: clamp(28px, 4vw, 52px); }

.stack > * + * { margin-top: clamp(14px, 2vw, 24px); }
.stack--loose > * + * { margin-top: clamp(24px, 4vw, 48px); }

.band {
  border-block: 1px solid var(--line);
  background: linear-gradient(100deg, rgba(11, 20, 30, .94) 0%, rgba(11, 20, 30, .38) 62%, rgba(5, 9, 15, 0) 100%);
}

.split {
  display: grid;
  gap: clamp(24px, 4vw, 56px);
  grid-template-columns: minmax(0, 1fr);
}

@media (min-width: 900px) {
  .split { grid-template-columns: minmax(0, 38fr) minmax(0, 62fr); }
  .split--index { grid-template-columns: minmax(0, 30fr) minmax(0, 70fr); }
  .split--wide-left { grid-template-columns: minmax(0, 62fr) minmax(0, 38fr); }
}

.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
  grid-template-columns: minmax(0, 1fr);
}

.grid--2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }

/* ---------- 5. 面板与胶囊 ---------- */
.panel {
  position: relative;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  box-shadow: inset 0 0 22px rgba(57, 255, 158, .045);
  padding: clamp(16px, 2.2vw, 26px);
  transition:
    border-color var(--t-base) var(--ease),
    background-color var(--t-base) var(--ease),
    box-shadow var(--t-base) var(--ease),
    transform var(--t-base) var(--ease);
}

.panel:hover {
  border-color: var(--cyan);
  background: var(--panel-soft);
  box-shadow: inset 0 0 26px rgba(34, 211, 238, .08);
  transform: translateY(-2px);
}

.panel--flat { box-shadow: none; }
.panel--flat:hover { transform: none; }

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 11px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--muted);
  white-space: nowrap;
}

.pill--accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #04140C;
  font-weight: 700;
}

.pill--alert {
  background: rgba(255, 77, 46, .1);
  border-color: rgba(255, 77, 46, .5);
  color: var(--alert);
}

.pill--warn {
  background: rgba(255, 176, 32, .1);
  border-color: rgba(255, 176, 32, .45);
  color: var(--warn);
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--panel);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .02em;
  cursor: pointer;
  transition:
    border-color var(--t-fast) var(--ease),
    background-color var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease),
    transform var(--t-fast) var(--ease);
}

.btn:hover {
  border-color: var(--cyan);
  background: var(--hover);
  transform: translateY(-1px);
}

.btn--accent {
  background: var(--accent);
  border-color: var(--accent);
  color: #04140C;
  font-weight: 700;
}

.btn--accent:hover {
  background: #63FFB4;
  border-color: #63FFB4;
  color: #04140C;
}

.btn--ghost {
  background: transparent;
  border-color: rgba(34, 211, 238, .45);
  color: var(--cyan);
}

.btn--ghost:hover {
  background: rgba(34, 211, 238, .1);
  border-color: var(--cyan);
  color: var(--ink);
}

/* ---------- 7. 面包屑 ---------- */
.crumbs {
  padding-block: 14px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.crumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.crumbs a:hover { color: var(--cyan); }
.crumbs [aria-current="page"] { color: var(--ink); }

/* ---------- 8. 图片容器 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--panel);
}

.media__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media--4x3 { aspect-ratio: 4 / 3; }
.media--1x1 { aspect-ratio: 1 / 1; }
.media--21x9 { aspect-ratio: 21 / 9; }

.media--grid::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(57, 255, 158, .07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(34, 211, 238, .06) 1px, transparent 1px);
  background-size: 42px 42px;
}

.media__tag {
  position: absolute;
  left: 12px;
  bottom: 12px;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: rgba(5, 9, 15, .78);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--accent);
}

/* ---------- 9. 标签页 ---------- */
.tabs { display: block; }

.tabs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 18px;
}

.tabs__tab {
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--panel);
  color: var(--muted);
  font-size: 13px;
  letter-spacing: .04em;
  cursor: pointer;
  transition:
    border-color var(--t-fast) var(--ease),
    background-color var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease);
}

.tabs__tab:hover { border-color: var(--cyan); color: var(--ink); }

.tabs__tab[aria-selected="true"] {
  background: rgba(57, 255, 158, .1);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 600;
}

.tabs__panel[hidden] { display: none; }

/* ---------- 10. 显现动效 ---------- */
html.has-reveal [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--t-base) var(--ease), transform var(--t-base) var(--ease);
}

html.has-reveal [data-reveal="in"] {
  opacity: 1;
  transform: none;
}

/* ---------- 11. 页头 ---------- */
.skip-link {
  position: absolute;
  left: var(--pad);
  top: 10px;
  z-index: 80;
  padding: 10px 18px;
  border-radius: var(--r-sm);
  background: var(--accent);
  color: #04140C;
  font-size: 14px;
  font-weight: 700;
  transform: translateY(-190%);
  transition: transform var(--t-fast) var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
}

.masthead {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(5, 9, 15, .93);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.masthead::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  pointer-events: none;
  background: linear-gradient(90deg, transparent, rgba(57, 255, 158, .55), rgba(34, 211, 238, .35), transparent);
}

.masthead__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 16px;
  width: 100%;
  max-width: var(--w-max);
  margin-inline: auto;
  padding: 14px var(--pad) 10px;
  transition: padding var(--t-base) var(--ease);
}

.masthead__axis {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--muted);
}

.masthead__axis-key { text-transform: uppercase; }

.masthead__axis-val {
  font-size: 12px;
  color: var(--accent);
}

.masthead__axis-sep {
  width: 1px;
  height: 12px;
  background: var(--line);
}

.masthead__tools {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
}

.masthead__cta { padding-inline: 18px; }

.masthead__meter {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--accent), var(--cyan));
  pointer-events: none;
}

/* 品牌 */
.brand {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
  text-align: center;
}

.brand__mark {
  width: 36px;
  height: 3px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--accent) 0 62%, var(--cyan) 62% 100%);
}

.brand__name {
  font-family: var(--f-display);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 800;
  letter-spacing: .02em;
  line-height: 1.1;
  color: var(--ink);
}

.brand__sub {
  font-size: 10px;
  letter-spacing: .28em;
  color: var(--muted);
}

.brand--foot {
  align-items: flex-start;
  text-align: left;
}

.brand--foot .brand__name { font-size: 22px; }

/* 栏目开合键 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  background: var(--panel);
  color: var(--ink);
  font-size: 13px;
  letter-spacing: .08em;
  cursor: pointer;
  transition: border-color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.nav-toggle:hover { border-color: var(--cyan); background: var(--hover); }
.nav-toggle[aria-expanded="true"] { border-color: var(--accent); }

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 16px;
}

.nav-toggle__bars i {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--accent);
  transition: transform var(--t-fast) var(--ease);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(5px) 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(-5px) rotate(-45deg); }

/* 主导航 */
.site-nav {
  width: 100%;
  max-width: var(--w-max);
  margin-inline: auto;
  padding-inline: var(--pad);
  overflow: hidden;
}

.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(6px, 2vw, 22px);
  padding-bottom: 12px;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: var(--r-pill);
  font-size: 13.5px;
  letter-spacing: .06em;
  color: var(--muted);
  transition:
    color var(--t-fast) var(--ease),
    border-color var(--t-fast) var(--ease),
    background-color var(--t-fast) var(--ease);
}

.site-nav__link:hover {
  color: var(--ink);
  border-color: var(--cyan);
  background: var(--hover);
}

.site-nav__link[aria-current="page"] {
  color: var(--accent);
  border-color: var(--line);
  background: rgba(57, 255, 158, .08);
}

.site-nav__link[aria-current="page"]::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 1px;
  background: var(--accent);
}

/* 收藏栏 */
.quickbar {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(11, 20, 30, .92), rgba(5, 9, 15, .92));
}

.quickbar__list {
  display: flex;
  gap: 6px;
  width: 100%;
  max-width: var(--w-max);
  margin-inline: auto;
  padding-inline: var(--pad);
  overflow-x: auto;
  scrollbar-width: none;
}

.quickbar__list::-webkit-scrollbar { display: none; }

.quickbar__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 14px;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease);
}

.quickbar__link::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 1px;
  background: var(--cyan);
  transition: background-color var(--t-fast) var(--ease);
}

.quickbar__link:hover { color: var(--ink); }
.quickbar__link:hover::before { background: var(--accent); }

/* ---------- 12. 页脚 ---------- */
.site-foot {
  position: relative;
  z-index: 1;
  margin-top: clamp(56px, 8vw, 120px);
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(11, 20, 30, .88), rgba(5, 9, 15, 1));
}

.site-foot::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -1px;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(34, 211, 238, .45), rgba(57, 255, 158, .35), transparent);
}

.site-foot__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(24px, 3vw, 44px);
  padding-block: clamp(36px, 5vw, 64px);
}

.site-foot__brand {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.site-foot__tag {
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--muted);
}

.foot-col__title {
  margin-bottom: 12px;
  font-family: var(--f-body);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .18em;
  color: var(--cyan);
}

.foot-col__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.foot-col__link {
  display: inline-block;
  font-size: 13.5px;
  color: var(--muted);
  transition: color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.foot-col__link:hover {
  color: var(--ink);
  transform: translateY(-1px);
}

.foot-col--contact .foot-col__list { gap: 12px; }

.foot-col__row {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.foot-col__key {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}

.foot-col__val {
  font-size: 13px;
  color: var(--ink);
  word-break: break-word;
}

.site-foot__bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-block: 18px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  color: var(--muted);
}

.site-foot__legal { letter-spacing: .04em; }
.site-foot__note { letter-spacing: .06em; color: var(--line); }

/* ---------- 13. 响应式 ---------- */
@media (min-width: 720px) {
  .site-foot__grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (min-width: 1024px) {
  .site-foot__grid { grid-template-columns: 1.6fr 1fr 1fr 1fr 1.5fr; }
  .site-foot__brand { grid-column: auto; }
}

@media (min-width: 900px) {
  .masthead .site-nav {
    max-height: 96px;
    transition: max-height var(--t-base) var(--ease), opacity var(--t-base) var(--ease), visibility var(--t-base);
  }

  .masthead[data-stuck="true"] .site-nav {
    max-height: 0;
    opacity: 0;
    visibility: hidden;
  }

  .masthead[data-stuck="true"] .masthead__inner {
    padding-block: 9px 7px;
  }
}

@media (max-width: 899px) {
  .masthead__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    padding: 12px var(--pad) 10px;
    gap: 10px;
  }

  .masthead__axis { display: none; }
  .masthead__cta { display: none; }
  .nav-toggle { display: inline-flex; }

  .brand { align-items: flex-start; text-align: left; }
  .brand__sub { display: none; }
  .brand__mark { width: 28px; }

  .site-nav {
    max-height: 0;
    visibility: hidden;
    transition: max-height var(--t-base) var(--ease), visibility 0s linear var(--t-base);
  }

  .site-nav[data-open="true"] {
    max-height: 460px;
    visibility: visible;
    transition: max-height var(--t-base) var(--ease), visibility 0s;
    border-top: 1px solid var(--line);
  }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 2px;
    padding-block: 10px 14px;
  }

  .site-nav__link {
    justify-content: flex-start;
    min-height: 48px;
    border-radius: var(--r-sm);
    font-size: 15px;
    color: var(--ink);
  }

  .site-nav__link[aria-current="page"] { border-color: var(--line); }

  .quickbar__list { padding-block: 2px; }
}

@media (max-width: 560px) {
  body { font-size: 14.5px; }
  .site-foot__grid { grid-template-columns: minmax(0, 1fr); }
  .site-foot__bottom { flex-direction: column; align-items: flex-start; }
}

/* ---------- 14. 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

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

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

  .panel:hover,
  .btn:hover,
  .foot-col__link:hover { transform: none; }
}