/* ============================================================
   /assets/site.css — 谈球吧体育 共享外壳与基础组件
   夜场指挥台：墨绿底 + 战术线稿 + 青柠锚点
   ============================================================ */

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

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

body, h1, h2, h3, h4, p, ul, ol, li, figure, blockquote, dl, dd, fieldset {
  margin: 0;
  padding: 0;
}

ul, ol { list-style: none; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
img, svg, video { display: block; max-width: 100%; }
table { border-collapse: collapse; width: 100%; }

/* ---------- 2. Tokens ---------- */
:root {
  --ink: #07130F;
  --navy: #0D1D2B;
  --board: #122A22;
  --line: #274A3D;
  --lime: #C9FF44;
  --lime-soft: #DBFF7A;
  --orange: #FF7A3C;
  --paper: #F1F6F0;
  --muted: #9DB3A7;
  --cyan: #7FE3B0;
  --warn: #FFC59B;
  --ink-on-lime: #08170F;

  --shell: 1240px;
  --gutter: clamp(16px, 4vw, 48px);
  --header-h: 68px;
  --cut: 12px;
  --dur: 200ms;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);

  --font-display: "PingFang SC", "Hiragino Sans GB", "Source Han Sans SC",
    "Noto Sans SC", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-body: var(--font-display);
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
    "Noto Sans Mono CJK SC", monospace;
}

/* ---------- 3. Base ---------- */
html {
  background: var(--ink);
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 20px);
}

body {
  min-height: 100vh;
  font-family: var(--font-body);
  font-size: clamp(15.5px, 0.55vw + 13.5px, 17px);
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--ink);
  background-image:
    repeating-linear-gradient(104deg, rgba(39, 74, 61, 0.30) 0 1px, transparent 1px 108px),
    radial-gradient(120% 70% at 88% -10%, rgba(201, 255, 68, 0.055), transparent 62%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

p { max-width: 72ch; }

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

#main-content {
  display: block;
  scroll-margin-top: calc(var(--header-h) + 16px);
}

/* ---------- 4. Utilities ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(40px, 7vw, 88px); }

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: clamp(14px, 2vw, 28px);
}

.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-12 { grid-column: span 12; }

.stack { display: flex; flex-direction: column; gap: clamp(12px, 1.8vw, 22px); }
.stack--tight { gap: 8px; }

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
}

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- 5. Typography scale ---------- */
.display {
  font-size: clamp(32px, 6vw, 74px);
  font-weight: 900;
  line-height: 1.02;
  letter-spacing: -0.03em;
  transform: skewX(-2.4deg);
  transform-origin: left bottom;
}

.h2 {
  font-size: clamp(22px, 3vw, 38px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.015em;
}

.h3 {
  font-size: clamp(17px, 1.6vw, 22px);
  font-weight: 800;
  line-height: 1.3;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--lime);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--orange);
  flex: 0 0 auto;
}

.lede {
  font-size: clamp(15.5px, 1.4vw, 18px);
  line-height: 1.75;
  color: var(--paper);
  max-width: 66ch;
}

.annot {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.32em;
  color: var(--muted);
  text-transform: uppercase;
}

.rule {
  border: 0;
  border-top: 1px solid var(--line);
  margin-block: clamp(20px, 3vw, 32px);
}

/* ---------- 6. Header ---------- */
.skip-link {
  position: absolute;
  left: 12px;
  top: -72px;
  z-index: 120;
  padding: 10px 16px;
  background: var(--lime);
  color: var(--ink-on-lime);
  font-weight: 800;
  font-size: 14px;
  transition: top var(--dur) var(--ease);
}

.skip-link:focus {
  top: 12px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(7, 19, 15, 0.94);
  border-bottom: 1px solid var(--line);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2vw, 28px);
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--gutter);
  min-height: var(--header-h);
}

.header-rail {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--lime);
  transform: scaleX(var(--scroll-progress, 0));
  transform-origin: 0 50%;
  transition: transform 80ms linear;
  pointer-events: none;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
}

.brand-mark {
  width: 6px;
  height: 30px;
  background: var(--lime);
  transform: skewX(-12deg);
  box-shadow: 7px 0 0 -3px rgba(201, 255, 68, 0.35);
  flex: 0 0 auto;
}

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

.brand-name {
  font-size: 17px;
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--paper);
}

.brand-tag {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--muted);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

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

.nav-toggle-bars span {
  display: block;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

[aria-expanded="true"] .nav-toggle-bars span:nth-child(1) { transform: translateY(5px) rotate(45deg); }
[aria-expanded="true"] .nav-toggle-bars span:nth-child(2) { opacity: 0; }
[aria-expanded="true"] .nav-toggle-bars span:nth-child(3) { transform: translateY(-5px) rotate(-45deg); }

.site-nav { margin-left: auto; }

.nav-index {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-wrap: nowrap;
}

.nav-index a {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 10px;
  border: 1px solid transparent;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--paper);
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease),
    color var(--dur) var(--ease);
}

.nav-index a:hover { background: var(--board); border-color: var(--line); }
.nav-index a:hover .nav-num { color: var(--lime); }
.nav-index a:active { background: #16342A; }

.nav-num {
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}

.nav-label { white-space: nowrap; }

.nav-index a[aria-current="page"] {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink-on-lime);
}

.nav-index a[aria-current="page"] .nav-num { color: rgba(8, 23, 15, 0.62); }

.nav-hint { display: none; }

.cut { position: relative; }

.cut::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: var(--cut);
  height: var(--cut);
  background: var(--cut-bg, var(--ink));
  -webkit-clip-path: polygon(0 0, 100% 0, 100% 100%);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  pointer-events: none;
}

.quick-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  background: var(--lime);
  color: var(--ink-on-lime);
  font-weight: 800;
  font-size: 13.5px;
  letter-spacing: 0.08em;
  --cut-bg: var(--ink);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.quick-cta::before {
  content: "→";
  order: 2;
  font-family: var(--font-mono);
  transition: transform var(--dur) var(--ease);
}

.quick-cta:hover { background: var(--lime-soft); }
.quick-cta:hover::before { transform: translateX(3px); }
.quick-cta:active { background: #B6EA2C; }

/* ---------- 7. Footer ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 9vw, 110px);
  background: var(--navy);
  border-top: 1px solid var(--line);
}

.footer-diagonal {
  position: absolute;
  top: -1px;
  right: 0;
  width: min(52%, 560px);
  height: 2px;
  background: linear-gradient(90deg, rgba(255, 122, 60, 0), var(--orange));
  transform: rotate(-1.6deg);
  transform-origin: right center;
  pointer-events: none;
}

.footer-inner {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(32px, 5vw, 64px) var(--gutter) clamp(28px, 4vw, 44px);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.9fr);
  gap: clamp(24px, 4vw, 64px);
  align-items: start;
}

.footer-brand-name {
  font-size: clamp(22px, 2.6vw, 30px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: 0.02em;
  transform: skewX(-2deg);
  transform-origin: left bottom;
  color: var(--paper);
}

.footer-brand-tag {
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.footer-batch {
  margin-top: 14px;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.footer-batch .mono { color: var(--lime); }

.footer-nav {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(16px, 3vw, 36px);
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--muted);
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
  max-width: none;
}

.footer-list { margin-top: 6px; }

.footer-list a {
  display: block;
  padding: 8px 0;
  font-size: 14.5px;
  color: var(--paper);
  border-bottom: 1px solid rgba(39, 74, 61, 0.55);
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.footer-list a:hover {
  color: var(--lime);
  padding-left: 8px;
  background: rgba(201, 255, 68, 0.06);
}

.footer-list a:active { color: var(--lime-soft); }

.footer-contact {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: clamp(14px, 2vw, 28px);
  margin-top: clamp(22px, 4vw, 40px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--line);
}

.contact-label {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--muted);
}

.contact-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--cyan);
  word-break: break-word;
}

.footer-base {
  background: var(--ink);
  border-top: 1px solid var(--line);
}

.footer-base-inner {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: 18px var(--gutter) 26px;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 28px;
}

.footer-legal {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
  max-width: none;
}

.footer-note {
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 56ch;
}

/* ---------- 8. Buttons & tags ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 12px 20px;
  border: 1px solid var(--line);
  background: var(--board);
  color: var(--paper);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.04em;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.btn:hover { border-color: var(--lime); color: var(--lime); background: #16342A; }
.btn:active { transform: translateY(1px); }

.btn--lime {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink-on-lime);
}

.btn--lime:hover { background: var(--lime-soft); border-color: var(--lime-soft); color: var(--ink-on-lime); }

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

.btn--ghost:hover { background: rgba(201, 255, 68, 0.12); color: var(--lime); }

.btn--sm { padding: 8px 14px; font-size: 13px; }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border: 1px solid var(--line);
  background: rgba(18, 42, 34, 0.65);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

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

/* ---------- 9. Card ---------- */
.card {
  position: relative;
  background: var(--board);
  border: 1px solid var(--line);
  padding: clamp(16px, 2.2vw, 26px);
  --cut-bg: var(--ink);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.card::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: var(--cut);
  height: var(--cut);
  background: var(--cut-bg);
  -webkit-clip-path: polygon(0 0, 100% 0, 100% 100%);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  pointer-events: none;
}

.card:hover { border-color: #3A6A57; transform: translateY(-2px); }

/* ---------- 10. Breadcrumbs ---------- */
.crumbs { font-family: var(--font-mono); font-size: 12px; }

.crumbs-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  color: var(--muted);
}

.crumbs-list a { color: var(--muted); transition: color var(--dur) var(--ease); }
.crumbs-list a:hover { color: var(--lime); }
.crumbs-list li + li::before { content: "/"; margin-right: 8px; color: var(--line); }
.crumbs-list [aria-current="page"] { color: var(--paper); }

/* ---------- 11. Media containers ---------- */
.media {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background: var(--navy);
  border: 1px solid var(--line);
}

.media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.06) brightness(0.86);
  transition: transform 240ms var(--ease);
}

.media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to top, rgba(7, 19, 15, 0.72), rgba(7, 19, 15, 0) 58%),
    repeating-linear-gradient(104deg, rgba(201, 255, 68, 0.13) 0 1px, transparent 1px 64px);
  pointer-events: none;
}

.media:hover img { transform: scale(1.03); }

.media--wide { aspect-ratio: 21 / 9; }
.media--tall { aspect-ratio: 4 / 5; }

.media--slant {
  transform: rotate(-1.4deg);
  transform-origin: center;
}

.media-cap {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

/* ---------- 12. Lists ---------- */
.tick-list li {
  position: relative;
  padding-left: 18px;
  margin-block: 8px;
}

.tick-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 7px;
  height: 7px;
  background: var(--lime);
  transform: rotate(45deg);
}

/* ---------- 13. Responsive ---------- */
@media (max-width: 1180px) {
  .brand-tag { display: none; }
  .nav-index a { font-size: 13px; padding: 7px 8px; }
}

@media (max-width: 1024px) {
  .header-inner { min-height: 60px; gap: 10px; }
  .brand-name { font-size: 16px; }
  .brand-mark { height: 26px; }

  .quick-cta { order: 2; margin-left: auto; padding: 9px 13px; font-size: 13px; }
  .nav-toggle { display: inline-flex; order: 3; }

  .site-nav {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    z-index: 55;
    margin-left: 0;
    max-height: calc(100vh - 60px);
    overflow-y: auto;
    padding: 14px var(--gutter) 22px;
    background: var(--navy);
    border-bottom: 1px solid var(--line);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
      visibility var(--dur) var(--ease);
  }

  .site-nav[data-open="true"] {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

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

  .nav-index a {
    width: 100%;
    justify-content: flex-start;
    padding: 14px 6px;
    font-size: 16px;
    border: 0;
  }

  .nav-index a:hover { background: rgba(201, 255, 68, 0.07); }

  .nav-hint {
    display: block;
    margin-top: 16px;
    font-family: var(--font-mono);
    font-size: 11px;
    letter-spacing: 0.14em;
    color: var(--muted);
    max-width: none;
  }

  html.is-nav-open { overflow: hidden; }

  .footer-inner { grid-template-columns: minmax(0, 1fr); }
  .footer-nav { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }

  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }
  .col-3, .col-4 { grid-column: span 3; }
  .col-5, .col-6, .col-7, .col-8 { grid-column: span 6; }
}

@media (max-width: 600px) {
  .brand-name { font-size: 15px; }
  .quick-cta { padding: 8px 11px; font-size: 12.5px; letter-spacing: 0.04em; }
  .nav-toggle { padding: 7px 9px; }
  .nav-toggle-label { display: none; }

  .footer-base-inner { flex-direction: column; align-items: flex-start; gap: 10px; }

  .grid-12 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .col-3, .col-4, .col-5, .col-6, .col-7, .col-8 { grid-column: span 2; }

  .annot { writing-mode: horizontal-tb; letter-spacing: 0.18em; }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }

  .card:hover,
  .media:hover img,
  .btn:active,
  .quick-cta:hover::before { transform: none; }

  .media--slant { transform: none; }
}