/* ============================================================
   新英体育看台 · 共享样式 /assets/site.css
   午夜球场看台：战术网格底 + 纸张叠层 + 等宽数据
   ============================================================ */

:root {
  --ink: #061A16;
  --den: #0C2620;
  --grid: #16332B;
  --cyan: #35F2C9;
  --mist: #9FF3DF;
  --amber: #FFC24B;
  --amber-deep: #8A5A0F;
  --paper: #F2E9DA;
  --text: #C6D3CE;
  --muted: #7C8F8A;

  --sans: system-ui, -apple-system, "Noto Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;

  --rail: 1440px;
  --edge: clamp(20px, 4vw, 56px);
  --gap: clamp(16px, 2.4vw, 28px);

  --ease: cubic-bezier(.2, .7, .3, 1);
  --line: 1px solid var(--grid);
}

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

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

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.75;
  color: var(--text);
  background-color: var(--ink);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(22, 51, 43, .55) 1px, transparent 1px),
    linear-gradient(90deg, rgba(22, 51, 43, .55) 1px, transparent 1px);
  background-size: 64px 64px;
  background-position: -1px -1px;
}

main,
.site-header,
.site-footer { position: relative; z-index: 1; }

h1, h2, h3, h4 {
  color: var(--paper);
  line-height: 1.12;
  letter-spacing: -.02em;
  text-wrap: balance;
  margin: 0 0 .6em;
}

h1 { font-weight: 900; font-size: clamp(44px, 7vw, 96px); line-height: .92; font-stretch: 87.5%; }
h2 { font-weight: 800; font-size: clamp(24px, 3vw, 32px); }
h3 { font-weight: 700; font-size: clamp(19px, 2vw, 24px); }

p { margin: 0 0 1.2em; }

img { max-width: 100%; height: auto; display: block; }

a { color: var(--cyan); text-decoration: none; }
a:hover { color: var(--mist); }

ul, ol { margin: 0 0 1.2em; padding-left: 1.2em; }

button { font: inherit; color: inherit; }

[hidden] { display: none !important; }

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

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

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--ink); }
::-webkit-scrollbar-thumb { background: var(--grid); border: 3px solid var(--ink); }
::-webkit-scrollbar-thumb:hover { background: #1F4438; }

/* ---------- 通用容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--rail);
  margin-inline: auto;
  padding-inline: var(--edge);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--gap);
}

.rule {
  height: 1px;
  border: 0;
  background: var(--grid);
  margin: 48px 0;
}

/* ---------- 排版组件 ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--cyan);
  flex: none;
}

.section-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 14px;
  border-bottom: var(--line);
  margin-bottom: 30px;
}

.section-head .idx {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--cyan);
  flex: none;
}

.section-head h2 { margin: 0; }

.prose { max-width: 40rem; }
.prose p { max-width: 34em; margin-bottom: 1.4em; }
.prose h2, .prose h3 { margin-top: 1.6em; }
.prose a { text-decoration: underline; text-underline-offset: 3px; }
.prose ul, .prose ol { max-width: 34em; }
.prose blockquote {
  margin: 28px 0;
  padding: 4px 0 4px 20px;
  border-left: 2px solid var(--cyan);
  color: var(--mist);
}

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

/* ---------- 数据单元 ---------- */
.stat { display: flex; flex-direction: column; gap: 6px; }

.stat-value {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(28px, 3.6vw, 44px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--amber);
}

.stat-label {
  font-size: 13px;
  letter-spacing: .04em;
  color: var(--muted);
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  padding: 3px 9px;
  color: var(--amber);
  border: 1px solid rgba(255, 194, 75, .35);
  border-radius: 1px;
  background: rgba(255, 194, 75, .07);
  white-space: nowrap;
}

.tag--cyan {
  color: var(--cyan);
  border-color: rgba(53, 242, 201, .35);
  background: rgba(53, 242, 201, .07);
}

/* ---------- 纸张叠层 ---------- */
.paper {
  background: var(--paper);
  color: #1C2C27;
  border: 1px solid rgba(0, 0, 0, .08);
  border-radius: 1px;
  padding: clamp(20px, 3vw, 32px);
  box-shadow:
    0 1px 0 rgba(0, 0, 0, .45),
    0 20px 44px -26px rgba(0, 0, 0, .95);
  transform: rotate(-0.4deg);
}

.paper a { color: var(--amber-deep); text-decoration: underline; text-underline-offset: 3px; }
.paper a:hover { color: #5E3C07; }
.paper h2, .paper h3, .paper h4 { color: #12211C; }

.paper--flat { transform: none; }

.paper-stack { position: relative; z-index: 0; }

.paper-stack::before {
  content: "";
  position: absolute;
  inset: 10px -10px -10px 10px;
  border: var(--line);
  border-radius: 1px;
  z-index: -1;
  pointer-events: none;
}

.tilt { transform: rotate(-0.4deg); }
.tilt-r { transform: rotate(0.4deg); }

/* ---------- 图片容器 ---------- */
.figure {
  position: relative;
  margin: 0;
  overflow: hidden;
  border: var(--line);
  border-radius: 1px;
  background-color: var(--den);
  background-image: linear-gradient(140deg, rgba(53, 242, 201, .09), transparent 58%);
  aspect-ratio: 16 / 10;
}

.figure > img,
.figure > picture,
.figure > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.figure--wide { aspect-ratio: 21 / 9; }
.figure--tall { aspect-ratio: 3 / 4; }
.figure--portrait { aspect-ratio: 4 / 5; }
.figure--square { aspect-ratio: 1 / 1; }

.figure figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 14px 16px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--mist);
  background: linear-gradient(180deg, transparent, rgba(6, 26, 22, .92));
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .01em;
  padding: 12px 22px;
  border: 1px solid var(--cyan);
  border-radius: 2px;
  background: transparent;
  color: var(--cyan);
  cursor: pointer;
  text-decoration: none;
  transition: background .18s var(--ease), color .18s var(--ease),
              border-color .18s var(--ease), transform .18s var(--ease);
}

.btn:hover {
  background: var(--cyan);
  color: var(--ink);
  transform: translateY(-2px);
}

.btn--solid { background: var(--cyan); color: var(--ink); }
.btn--solid:hover { background: var(--mist); border-color: var(--mist); color: var(--ink); }

.btn--ghost { border-color: var(--grid); color: var(--text); }
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); background: transparent; }

.btn--amber { border-color: var(--amber); color: var(--amber); }
.btn--amber:hover { background: var(--amber); border-color: var(--amber); color: var(--ink); }

.btn--paper { background: var(--paper); border-color: var(--paper); color: var(--amber-deep); }
.btn--paper:hover { background: var(--cyan); border-color: var(--cyan); color: var(--ink); }

/* ---------- 面包屑 ---------- */
.breadcrumb {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.breadcrumb li { display: inline-flex; align-items: center; }

.breadcrumb li + li::before {
  content: "/";
  margin: 0 10px;
  color: rgba(124, 143, 138, .5);
}

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

/* ============================================================
   页头
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(6, 26, 22, .97);
  border-bottom: var(--line);
}

.skip-link {
  position: absolute;
  left: var(--edge);
  top: 8px;
  z-index: 200;
  padding: 10px 18px;
  background: var(--cyan);
  color: var(--ink);
  font-weight: 700;
  font-size: 14px;
  border-radius: 2px;
  text-decoration: none;
  transform: translateY(-220%);
  transition: transform .18s var(--ease);
}

.skip-link:focus { transform: none; color: var(--ink); }

.header-rail {
  display: flex;
  align-items: center;
  gap: 18px;
  width: 100%;
  max-width: var(--rail);
  margin-inline: auto;
  padding: 18px var(--edge);
}

.brand {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-right: auto;
  color: var(--paper);
  text-decoration: none;
  min-width: 0;
}

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

.brand-name {
  font-weight: 900;
  font-size: 19px;
  letter-spacing: -.02em;
  font-stretch: 87.5%;
  white-space: nowrap;
}

.brand-domain {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--muted);
  white-space: nowrap;
}

.nav { display: block; }

.nav-list {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  display: block;
  padding: 9px 15px;
  font-size: 15px;
  color: var(--text);
  border: 1px solid transparent;
  border-radius: 2px;
  white-space: nowrap;
  transition: color .18s var(--ease), border-color .18s var(--ease), background .18s var(--ease);
}

.nav-link:hover {
  color: var(--cyan);
  border-color: var(--grid);
  background: rgba(53, 242, 201, .05);
}

.nav-link[aria-current="page"] {
  color: var(--cyan);
  border-color: var(--cyan);
  background: rgba(53, 242, 201, .08);
  font-weight: 700;
}

.nav-contact { display: none; }

.header-cta {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .08em;
  font-weight: 700;
  padding: 10px 18px;
  color: var(--ink);
  background: var(--cyan);
  border-radius: 2px;
  text-decoration: none;
  white-space: nowrap;
  transition: background .18s var(--ease), transform .18s var(--ease), color .18s var(--ease);
}

.header-cta:hover {
  background: var(--amber);
  color: var(--ink);
  transform: translateY(-2px);
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  position: relative;
  z-index: 90;
  padding: 9px 14px;
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--text);
  background: transparent;
  border: 1px solid var(--grid);
  border-radius: 2px;
  cursor: pointer;
  transition: border-color .18s var(--ease), color .18s var(--ease);
}

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

.nav-toggle-icon {
  position: relative;
  display: inline-block;
  width: 16px;
  height: 12px;
  flex: none;
}

.nav-toggle-icon i {
  position: absolute;
  left: 0;
  right: 0;
  height: 1.5px;
  background: currentColor;
  transition: transform .2s var(--ease), top .2s var(--ease), bottom .2s var(--ease);
}

.nav-toggle-icon i:first-child { top: 2px; }
.nav-toggle-icon i:last-child { bottom: 2px; }

.nav-toggle[aria-expanded="true"] .nav-toggle-icon i:first-child {
  top: 50%;
  transform: translateY(-50%) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon i:last-child {
  bottom: 50%;
  transform: translateY(50%) rotate(-45deg);
}

/* 收藏工具条 */
.pins {
  position: absolute;
  left: 0;
  right: 0;
  top: 100%;
  background: rgba(6, 26, 22, .98);
  border-bottom: var(--line);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-6px);
  transition: opacity .2s var(--ease), transform .2s var(--ease), visibility 0s linear .2s;
}

.pins.is-visible {
  opacity: 1;
  visibility: visible;
  transform: none;
  transition: opacity .2s var(--ease), transform .2s var(--ease), visibility 0s;
}

.pins-inner {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  max-width: var(--rail);
  margin-inline: auto;
  padding: 10px var(--edge);
}

.pins-label {
  flex: none;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--muted);
  text-transform: uppercase;
}

.pins-list {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.pins-list::-webkit-scrollbar { display: none; }

.pin {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--grid);
  border-radius: 2px;
  background: var(--den);
  white-space: nowrap;
  cursor: grab;
  transition: border-color .18s var(--ease), opacity .18s var(--ease);
}

.pin:hover { border-color: var(--cyan); }
.pin.is-dragging { opacity: .35; cursor: grabbing; }

.pin-link {
  padding: 6px 4px 6px 12px;
  font-size: 13px;
  color: var(--text);
  text-decoration: none;
}

.pin-link:hover { color: var(--cyan); }

.pin-remove {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 15px;
  line-height: 1;
  padding: 6px 10px 6px 4px;
  cursor: pointer;
  transition: color .18s var(--ease);
}

.pin-remove:hover { color: var(--amber); }

/* 滚动进度 */
.scroll-line {
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
  pointer-events: none;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  margin-top: clamp(72px, 10vw, 140px);
  border-top: var(--line);
  background: linear-gradient(180deg, rgba(12, 38, 32, .78), var(--ink) 72%);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) minmax(220px, 1.25fr);
  gap: 40px var(--gap);
  width: 100%;
  max-width: var(--rail);
  margin-inline: auto;
  padding: clamp(48px, 7vw, 88px) var(--edge) 44px;
}

.footer-heading {
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--muted);
  margin: 0 0 16px;
}

.footer-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 9px;
}

.footer-list a {
  font-size: 15px;
  color: var(--text);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.footer-list a:hover { color: var(--cyan); }

.footer-brand-name {
  margin: 0 0 4px;
  font-weight: 900;
  font-size: 22px;
  letter-spacing: -.02em;
  font-stretch: 87.5%;
  color: var(--paper);
}

.footer-brand-domain {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.footer-brand-note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  max-width: 30em;
}

.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  max-width: var(--rail);
  margin-inline: auto;
  padding: 26px var(--edge) 30px;
  border-top: var(--line);
}

.footer-contact-line {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
}

.footer-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  width: 100%;
  max-width: var(--rail);
  margin-inline: auto;
  padding: 18px var(--edge) 34px;
  border-top: var(--line);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--muted);
}

.footer-icp { color: var(--mist); }

/* ============================================================
   进入视口渐显
   ============================================================ */
html.js [data-reveal] {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}

html.js [data-reveal].is-shown {
  opacity: 1;
  transform: none;
}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1080px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 900px) {
  .grid-12 { grid-template-columns: repeat(6, minmax(0, 1fr)); }

  .header-rail { padding: 14px var(--edge); gap: 12px; }

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

  .header-cta { display: none; }

  .nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(340px, 86vw);
    z-index: 80;
    padding: 96px 26px 40px;
    background: var(--den);
    border-left: var(--line);
    overflow-y: auto;
    transform: translateX(100%);
    visibility: hidden;
    transition: transform .3s var(--ease), visibility 0s linear .3s;
  }

  .nav[data-open] {
    transform: none;
    visibility: visible;
    transition: transform .3s var(--ease), visibility 0s;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
  }

  .nav-link {
    font-size: 19px;
    padding: 14px 16px;
    border-radius: 2px;
  }

  .nav-contact { display: block; }

  .pins-inner { padding-block: 8px; }
}

@media (max-width: 620px) {
  .brand-domain { display: none; }
  .brand-name { font-size: 17px; }
  .nav-toggle-text { display: none; }
  .nav-toggle { padding: 9px 11px; }

  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 32px 20px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bar { flex-direction: column; align-items: flex-start; }
  .pins-label { display: none; }
}

@media (max-width: 560px) {
  .grid-12 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .paper { transform: none; }
  .paper-stack::before { inset: 6px -6px -6px 6px; }
}

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

  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

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

  .btn:hover,
  .header-cta:hover { transform: none; }

  .pins { transition: none; }
}

/* ============================================================
   打印
   ============================================================ */
@media print {
  body::before { display: none; }
  .site-header, .site-footer, .pins { display: none; }
  body { background: #fff; color: #000; }
}