/* ============================================================
   看台在哪买 — 共享样式表 /assets/site.css
   夜间球场探照灯层次 + 座位牌式卡片语汇
   ============================================================ */

/* ---------- 1. 变量 ---------- */
:root {
  --ink: #071410;
  --ink-2: #0E241E;
  --glass: #16362C;
  --line: #23584A;
  --lime: #C6F53C;
  --lime-deep: #8FCB1E;
  --signal: #FF7A33;
  --paper: #F3ECDD;
  --muted: #9DB4AC;
  --wine: #4A1B33;
  --indigo: #241F5C;

  --font-display: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, sans-serif;
  --font-editorial: "Noto Serif SC", "Source Han Serif SC", "Songti SC", "SimSun", serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;

  --fs-body: clamp(0.95rem, 0.9rem + 0.2vw, 1.0625rem);
  --gutter: clamp(16px, 4vw, 48px);
  --shell: 1320px;
  --radius: 2px;
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --dur: 160ms;
  --stack-gap: 16px;
}

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

* { margin: 0; }

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 96px;
}

body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: var(--fs-body);
  font-weight: 400;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
}

img, svg, video { display: block; max-width: 100%; }

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

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

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

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.015em;
  color: var(--paper);
}

:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 1px;
}

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

/* ---------- 3. 通用容器与排版 ---------- */
.wrap {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.content { max-width: 68ch; }

.prose {
  max-width: 68ch;
  font-size: var(--fs-body);
  line-height: 1.78;
  color: rgba(243, 236, 221, 0.92);
}
.prose p + p { margin-top: 1em; }
.prose h2 { margin: 1.9em 0 0.6em; font-size: clamp(1.35rem, 2.4vw, 1.85rem); }
.prose h3 { margin: 1.6em 0 0.5em; font-size: 1.15rem; }
.prose a {
  color: var(--lime);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}
.prose a:hover { color: var(--lime-deep); }
.prose ul, .prose ol { margin: 1em 0; padding-left: 1.2em; }
.prose ul li { list-style: square; }
.prose ol li { list-style: decimal; }
.prose li + li { margin-top: 0.4em; }
.prose blockquote {
  margin: 1.4em 0;
  padding: 4px 0 4px 18px;
  border-left: 2px solid var(--lime);
  font-family: var(--font-editorial);
  font-size: 1.12rem;
  color: var(--paper);
}

.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lime);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.4vw, 2.6rem);
  letter-spacing: -0.015em;
  line-height: 1.14;
  color: var(--paper);
}

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

/* ---------- 4. 跳转链接 ---------- */
.skip-link {
  position: absolute;
  top: 0;
  left: 50%;
  z-index: 300;
  transform: translate(-50%, -140%);
  background: var(--lime);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  padding: 10px 20px;
  border-radius: 0 0 var(--radius) var(--radius);
  transition: transform var(--dur) var(--ease);
}
.skip-link:focus { transform: translate(-50%, 0); }

/* ---------- 5. 页头：居中刊头 ---------- */
.site-header {
  position: relative;
  z-index: 50;
  background: var(--ink-2);
  border-bottom: 1px solid var(--line);
}

.masthead {
  background:
    radial-gradient(92% 140% at 50% 0%, rgba(198, 245, 60, 0.10), transparent 62%),
    linear-gradient(180deg, rgba(22, 54, 44, 0.55), rgba(7, 20, 16, 0));
}

.masthead__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(18px, 3vw, 30px) var(--gutter) clamp(14px, 2vw, 20px);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  column-gap: clamp(12px, 3vw, 32px);
}

.masthead__kicker {
  justify-self: start;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.masthead__identity { text-align: center; }

.masthead__brand {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.4vw, 2.35rem);
  letter-spacing: -0.015em;
  line-height: 1.1;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}
.masthead__brand:hover { color: var(--lime); }

.masthead__tagline {
  margin-top: 6px;
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--muted);
}

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

.masthead__cta {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  color: var(--lime);
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(198, 245, 60, 0.06);
  white-space: nowrap;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.masthead__cta:hover,
.masthead__cta:focus-visible {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  cursor: pointer;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.nav-toggle__bars {
  position: relative;
  display: inline-block;
  width: 16px;
  height: 10px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: currentColor;
  transition: transform var(--dur) var(--ease), top var(--dur) var(--ease), bottom var(--dur) var(--ease);
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }
.nav-toggle__text { white-space: nowrap; }
.nav-toggle:hover { border-color: var(--lime); color: var(--lime); }

.site-header[data-open] .nav-toggle { border-color: var(--lime); color: var(--lime); }
.site-header[data-open] .nav-toggle__bars::before { top: 4px; transform: rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { bottom: 4px; transform: rotate(-45deg); }

/* 六个主栏目 */
.primarynav {
  border-top: 1px solid rgba(35, 88, 74, 0.7);
  border-bottom: 1px solid rgba(35, 88, 74, 0.45);
}

.primarynav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: clamp(10px, 2.6vw, 34px);
  max-width: var(--shell);
  margin: 0 auto;
  padding: 12px var(--gutter);
}

.primarynav__link {
  position: relative;
  display: inline-block;
  padding: 5px 0;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: #DDE6DF;
  transition: color var(--dur) var(--ease);
}
.primarynav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}
.primarynav__link:hover { color: var(--lime); }
.primarynav__link:hover::after { transform: scaleX(1); }
.primarynav__link[aria-current="page"] { color: var(--lime); }
.primarynav__link[aria-current="page"]::after { transform: scaleX(1); }

/* ---------- 6. 玻璃吸顶第二栏 ---------- */
.utilitybar {
  position: relative;
  z-index: 60;
  background: rgba(22, 54, 44, 0.8);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  backdrop-filter: blur(14px) saturate(1.2);
  border-top: 1px solid rgba(198, 245, 60, 0.16);
}

.utilitybar__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: clamp(14px, 3vw, 40px);
  max-width: var(--shell);
  margin: 0 auto;
  padding: 10px var(--gutter);
}

.utilitybar__link {
  position: relative;
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}
.utilitybar__link::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -5px;
  height: 1px;
  background: var(--lime);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--dur) var(--ease);
}
.utilitybar__link:hover,
.utilitybar__link:focus-visible { color: var(--lime); }
.utilitybar__link:hover::after,
.utilitybar__link:focus-visible::after { transform: scaleX(1); }

.utilitybar__progress {
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--lime), var(--lime-deep));
  transform: scaleX(0);
  transform-origin: left center;
  pointer-events: none;
}

.utilitybar.is-stuck {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  border-top: 1px solid rgba(198, 245, 60, 0.3);
  box-shadow: 0 12px 34px rgba(0, 0, 0, 0.5);
  animation: bar-drop 180ms var(--ease);
}

@keyframes bar-drop {
  from { transform: translateY(-100%); }
  to { transform: translateY(0); }
}

.utilitybar__spacer { height: 0; }

/* ---------- 7. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 9vw, 110px);
  background: var(--ink-2);
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.9rem;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  height: 3px;
  width: min(46%, 420px);
  background: linear-gradient(90deg, var(--lime), var(--lime-deep), rgba(198, 245, 60, 0));
}

.footer__inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: clamp(32px, 5vw, 62px) var(--gutter) clamp(24px, 3vw, 38px);
  display: grid;
  grid-template-columns: 1.5fr 1fr 1.2fr;
  gap: clamp(24px, 4vw, 56px);
  align-items: start;
}

.footer__brand {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}
.footer__brand:hover { color: var(--lime); }

.footer__note {
  margin-top: 12px;
  max-width: 34ch;
  font-size: 0.88rem;
  line-height: 1.8;
  color: var(--muted);
}

.footer__hours {
  margin-top: 16px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  line-height: 1.9;
  color: rgba(157, 180, 172, 0.8);
}

.footer__label {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--lime);
  font-size: 0.66rem;
  letter-spacing: 0.16em;
}

.footer__lanes ul {
  display: grid;
  gap: 10px;
}
.footer__lanes a {
  display: inline-block;
  position: relative;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.1em;
  color: var(--paper);
  padding-left: 16px;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.footer__lanes a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.62em;
  width: 7px;
  height: 2px;
  background: var(--line);
  transition: background var(--dur) var(--ease), width var(--dur) var(--ease);
}
.footer__lanes a:hover { color: var(--lime); padding-left: 20px; }
.footer__lanes a:hover::before { background: var(--lime); width: 11px; }

.footer__heading {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
}

.footer__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.footer__tags li { display: inline-block; }
.footer__tags li a,
.footer__tags li span {
  display: inline-block;
  padding: 5px 10px;
  border: 1px solid rgba(35, 88, 74, 0.8);
  border-radius: var(--radius);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--muted);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.footer__tags li a {
  color: var(--lime);
  border-color: rgba(198, 245, 60, 0.38);
}
.footer__tags li a:hover {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

.footer__base {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 18px var(--gutter) clamp(26px, 4vw, 44px);
  border-top: 1px solid rgba(35, 88, 74, 0.6);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 26px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  color: rgba(157, 180, 172, 0.85);
}

.footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}
.footer__legal a {
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}
.footer__legal a:hover,
.footer__legal a:focus-visible { color: var(--lime); }

.footer__fine {
  flex: 1 1 100%;
  padding-top: 10px;
  border-top: 1px dashed rgba(35, 88, 74, 0.5);
  font-size: 0.72rem;
  line-height: 1.9;
  color: rgba(157, 180, 172, 0.66);
}

/* ---------- 8. 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--muted);
}
.breadcrumbs__item { display: inline-flex; align-items: center; }
.breadcrumbs__item::after {
  content: "/";
  margin-left: 8px;
  color: rgba(157, 180, 172, 0.45);
}
.breadcrumbs__item:last-child::after { content: none; margin-left: 0; }
.breadcrumbs a {
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}
.breadcrumbs a:hover { color: var(--lime); }
.breadcrumbs__item:last-child { color: var(--paper); }

/* ---------- 9. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
              border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn--solid { background: var(--lime); color: var(--ink); }
.btn--solid:hover { background: var(--lime-deep); }

.btn--ghost {
  background: rgba(22, 54, 44, 0.55);
  border-color: var(--line);
  color: var(--paper);
}
.btn--ghost:hover { border-color: var(--lime); color: var(--lime); }

.btn--signal { background: var(--signal); color: #1B0C03; }
.btn--signal:hover { background: #FF8F55; }

/* ---------- 10. 标签与代码芯片 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--muted);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.tag--lime {
  color: var(--lime);
  border-color: rgba(198, 245, 60, 0.45);
  background: rgba(198, 245, 60, 0.08);
}
.tag--signal {
  color: var(--signal);
  border-color: rgba(255, 122, 51, 0.5);
  background: rgba(255, 122, 51, 0.1);
}
.tag:hover { transform: translateY(-2px); }

.code-chip {
  display: inline-block;
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(198, 245, 60, 0.07);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--lime);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.code-chip:hover { border-color: var(--lime); }
.code-chip.is-copied {
  background: var(--lime);
  border-color: var(--lime);
  color: var(--ink);
}

/* ---------- 11. 图片容器基础规则 ---------- */
.figure {
  position: relative;
  display: block;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(135deg, rgba(22, 54, 44, 0.9), rgba(7, 20, 16, 0.96));
}

.figure__img {
  display: block;
  width: 100%;
  height: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  color: transparent;
  background:
    repeating-linear-gradient(135deg, rgba(35, 88, 74, 0.35) 0 2px, transparent 2px 14px),
    radial-gradient(80% 100% at 20% 0%, rgba(198, 245, 60, 0.1), transparent 62%);
}

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

/* ---------- 12. 布局工具 ---------- */
.grid {
  display: grid;
  gap: clamp(14px, 2vw, 24px);
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

.stack > * + * { margin-top: var(--stack-gap); }

/* ---------- 13. 平板 ---------- */
@media (max-width: 1080px) {
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .footer__lead { grid-column: 1 / -1; }
}

/* ---------- 14. 移动端 ---------- */
@media (max-width: 860px) {
  html { scroll-padding-top: 84px; }

  .masthead__inner {
    grid-template-columns: 1fr auto;
    grid-template-areas: "identity actions";
    padding-top: 16px;
    padding-bottom: 14px;
  }
  .masthead__kicker { display: none; }
  .masthead__identity { grid-area: identity; text-align: left; }
  .masthead__actions { grid-area: actions; justify-self: end; }
  .masthead__brand { font-size: clamp(1.35rem, 6vw, 1.8rem); }
  .masthead__tagline { font-size: 0.72rem; letter-spacing: 0.04em; }
  .masthead__cta { display: none; }

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

  .primarynav { display: none; border-top: 1px solid rgba(35, 88, 74, 0.7); }
  .site-header[data-open] .primarynav { display: block; }

  .primarynav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px var(--gutter) 16px;
  }
  .primarynav__list > li { width: 100%; }
  .primarynav__link {
    display: block;
    padding: 13px 0;
    font-size: 1.02rem;
    border-bottom: 1px solid rgba(35, 88, 74, 0.45);
  }
  .primarynav__link::after { display: none; }
  .primarynav__link[aria-current="page"] { padding-left: 12px; }
  .primarynav__link[aria-current="page"]::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 5px;
    height: 5px;
    margin-top: -2px;
    background: var(--lime);
  }

  .utilitybar__list {
    justify-content: flex-start;
    flex-wrap: nowrap;
    overflow-x: auto;
    gap: 20px;
    padding: 10px var(--gutter);
    scrollbar-width: none;
  }
  .utilitybar__list::-webkit-scrollbar { display: none; }
  .utilitybar__link { white-space: nowrap; }

  .footer__inner { grid-template-columns: 1fr; }
  .footer__lead { grid-column: auto; }
  .footer__base { flex-direction: column; align-items: flex-start; }
  .footer__fine { font-size: 0.7rem; }
}

@media (max-width: 480px) {
  .nav-toggle { padding: 7px 10px; font-size: 0.68rem; }
  .primarynav__link { font-size: 0.98rem; }
  .footer__tags li a,
  .footer__tags li span { font-size: 0.74rem; padding: 4px 8px; }
}

/* ---------- 15. 动效偏好 ---------- */
@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;
  }

  .utilitybar.is-stuck { animation: none; }
  .btn:hover,
  .tag:hover { transform: none; }
}