/* ============================================================
   开云在哪买 · 共享样式表 /assets/site.css
   夜间赛场控制室 / 纸张叠层 / 印刷刻度
   ============================================================ */

/* ---------- 变量 ---------- */
:root {
  --ink: #050F1C;
  --panel: #0B1A2B;
  --panel-2: #13253A;
  --line: #24405C;
  --cyan: #2FF2CF;
  --cyan-soft: #5FF7DD;
  --orange: #FF9A3C;
  --violet: #8A6BFF;
  --text: #E9F3FA;
  --muted: #9BB0C4;
  --paper: #F2F6F9;

  --font-sans: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, "Courier New", monospace;

  --w: 1240px;
  --w-wide: 1440px;
  --gutter: clamp(16px, 4vw, 40px);
  --radius: 2px;
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 140px;
}

body {
  margin: 0;
  min-height: 100%;
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.8;
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 620px at 80% -10%, rgba(138, 107, 255, .20), transparent 62%),
    radial-gradient(900px 520px at 4% 1%, rgba(47, 242, 207, .10), transparent 58%),
    linear-gradient(rgba(36, 64, 92, .20) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 64, 92, .20) 1px, transparent 1px);
  background-size: auto, auto, 88px 88px, 88px 88px;
  background-attachment: fixed, fixed, fixed, fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

p { margin: 0; }

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

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

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

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

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

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

/* ---------- 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 10px;
  left: 50%;
  z-index: 200;
  padding: 10px 18px;
  transform: translate(-50%, -220%);
  background: var(--cyan);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .1em;
  border-radius: var(--radius);
  transition: transform .22s ease;
}
.skip-link:focus { transform: translate(-50%, 0); }

/* ---------- 通用容器 ---------- */
.container {
  width: 100%;
  max-width: var(--w);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
.container--wide { max-width: var(--w-wide); }

/* ---------- 页头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(5, 15, 28, .97) 0%, rgba(5, 15, 28, .90) 100%);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.header-inner {
  width: 100%;
  max-width: var(--w-wide);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* 报头 */
.masthead {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 16px;
  padding: 16px 0 12px;
}

.masthead__side {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
}
.masthead__side--left { justify-self: start; }
.masthead__side--right { justify-self: end; }
.masthead__brand { justify-self: center; min-width: 0; }

.brand {
  display: block;
  text-align: center;
  color: var(--text);
}
.brand__name {
  display: block;
  font-family: var(--font-sans);
  font-size: clamp(24px, 3.2vw, 38px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.1;
  color: var(--text);
}
.brand__sub {
  display: block;
  margin-top: 7px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  font-weight: 400;
  letter-spacing: .26em;
  color: var(--muted);
}

/* 轮次读数 */
.readout {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 12px;
  border-left: 2px solid var(--cyan);
}
.readout__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .2em;
  color: var(--muted);
  line-height: 1.4;
}
.readout__value {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--cyan);
  line-height: 1.3;
}

/* 移动端汉堡 */
.nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  cursor: pointer;
  transition: border-color .18s ease, color .18s ease;
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }
.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 16px;
}
.nav-toggle__bars span {
  display: block;
  height: 1.5px;
  background: currentColor;
  transition: transform .22s ease, opacity .18s ease;
}
.site-header[data-open] .nav-toggle__bars span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.site-header[data-open] .nav-toggle__bars span:nth-child(2) { opacity: 0; }
.site-header[data-open] .nav-toggle__bars span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }
.nav-toggle__text { line-height: 1; }

/* 栏目导航 */
.site-nav {
  position: relative;
  border-top: 1px solid var(--line);
  overflow: hidden;
}
.site-nav__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: clamp(6px, 2vw, 28px);
}
.site-nav__item { display: block; }
.site-nav__link {
  display: inline-block;
  padding: 11px 4px;
  border-bottom: 2px solid transparent;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  transition: color .18s ease, border-color .18s ease;
}
.site-nav__link:hover { color: var(--text); border-bottom-color: var(--line); }
.site-nav__link[aria-current="page"] {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* 报头数据带 */
.datastrip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 24px;
  padding: 7px 0 8px;
  border-top: 1px solid rgba(36, 64, 92, .55);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--muted);
}
.datastrip__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
}
.datastrip__label { color: var(--muted); }
.datastrip__value { color: var(--cyan); font-weight: 700; }
.datastrip__value--warm { color: var(--orange); }
.datastrip__dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(47, 242, 207, .16);
  animation: kydot 2.4s ease-in-out infinite;
}
@keyframes kydot {
  0%, 100% { box-shadow: 0 0 0 3px rgba(47, 242, 207, .18); }
  50% { box-shadow: 0 0 0 7px rgba(47, 242, 207, 0); }
}

/* ---------- 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(48px, 7vw, 88px);
  border-top: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(11, 26, 43, 0) 0%, rgba(11, 26, 43, .72) 26%, var(--panel) 100%);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 7px;
  background: repeating-linear-gradient(90deg, var(--line) 0 1px, transparent 1px 26px);
  opacity: .65;
  pointer-events: none;
}

.footer-inner {
  width: 100%;
  max-width: var(--w-wide);
  margin: 0 auto;
  padding: clamp(38px, 6vw, 66px) var(--gutter) 28px;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--line);
}
.footer-brand__name {
  display: block;
  font-size: clamp(22px, 3vw, 32px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text);
}
.footer-brand__note {
  display: block;
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--muted);
}
.footer-note {
  max-width: 36ch;
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.8;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 28px 34px;
  padding: 30px 0 34px;
  border-bottom: 1px solid var(--line);
}
.footer-col { min-width: 0; }
.footer-col__title {
  margin: 0 0 14px;
  padding-bottom: 9px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .22em;
  color: var(--cyan);
}
.footer-col__list {
  display: grid;
  gap: 10px;
}
.footer-col__link {
  display: inline-block;
  color: var(--muted);
  font-size: 14px;
  border-bottom: 1px solid transparent;
  transition: color .18s ease, border-color .18s ease;
}
.footer-col__link:hover { color: var(--text); border-bottom-color: var(--line); }

.footer-base {
  display: grid;
  gap: 8px;
  padding-top: 22px;
}
.footer-base__line {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--muted);
  word-break: break-word;
}
.footer-base__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 9px;
  margin: 8px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--muted);
}
.footer-base__sep { color: var(--line); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  line-height: 1.2;
  cursor: pointer;
  transition: background-color .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn--primary {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
  font-weight: 700;
}
.btn--primary:hover { background: var(--cyan-soft); border-color: var(--cyan-soft); }
.btn--ghost { border-color: var(--line); color: var(--muted); }
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }

/* ---------- 面包屑 ---------- */
.breadcrumb { padding: 20px 0 0; }
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--muted);
}
.breadcrumb__item { display: inline-flex; align-items: center; gap: 8px; }
.breadcrumb__item::after { content: "/"; color: var(--line); }
.breadcrumb__item:last-child::after { content: ""; }
.breadcrumb__link { color: var(--muted); transition: color .18s ease; }
.breadcrumb__link:hover { color: var(--cyan); }
.breadcrumb__current { color: var(--text); }

/* ---------- 章节 ---------- */
.section { padding: clamp(38px, 6vw, 76px) 0; }
.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 16px;
  margin-bottom: 26px;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--cyan);
}
.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: currentColor;
}
.section__title {
  margin: 0;
  font-size: clamp(24px, 3.6vw, 40px);
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.24;
}

/* ---------- 正文 ---------- */
.prose {
  max-width: 38em;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--text);
}
.prose p { margin: 0 0 1.15em; }
.prose h2 {
  margin: 1.6em 0 .6em;
  font-size: clamp(21px, 2.4vw, 27px);
  font-weight: 800;
}
.prose h3 {
  margin: 1.4em 0 .5em;
  font-size: 19px;
  font-weight: 800;
  color: var(--cyan);
}
.prose ul, .prose ol {
  margin: 0 0 1.15em;
  padding-left: 1.4em;
  list-style: disc;
}
.prose ol { list-style: decimal; }
.prose li { margin-bottom: .4em; }
.prose a { color: var(--cyan); border-bottom: 1px solid rgba(47, 242, 207, .45); }
.prose strong { color: var(--paper); font-weight: 800; }

/* ---------- 卡片 ---------- */
.card {
  position: relative;
  padding: 20px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}
.card--stack { box-shadow: 6px 6px 0 0 var(--panel-2), 7px 7px 0 0 var(--line); }
.card__title {
  margin: 0 0 8px;
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.01em;
}
.card__body {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

/* ---------- 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(19, 37, 58, .6);
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .16em;
  color: var(--muted);
  line-height: 1.6;
}
.tag--cyan { color: var(--cyan); border-color: rgba(47, 242, 207, .5); }
.tag--orange { color: var(--orange); border-color: rgba(255, 154, 60, .5); }
.tag--violet { color: var(--violet); border-color: rgba(138, 107, 255, .5); }
.tag--paper { background: var(--paper); color: var(--panel); border-color: var(--paper); }

/* ---------- 数字块 ---------- */
.stat { display: grid; gap: 5px; }
.stat__value {
  font-family: var(--font-mono);
  font-size: clamp(28px, 4.2vw, 50px);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--text);
}
.stat__value--cyan { color: var(--cyan); }
.stat__value--orange { color: var(--orange); }
.stat__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--muted);
}

/* ---------- 图片容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--panel);
  background-image:
    linear-gradient(135deg, rgba(47, 242, 207, .10), rgba(138, 107, 255, .16)),
    repeating-linear-gradient(90deg, rgba(36, 64, 92, .55) 0 1px, transparent 1px 48px),
    repeating-linear-gradient(0deg, rgba(36, 64, 92, .55) 0 1px, transparent 1px 48px);
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 4 / 5; }
.media-frame--square { aspect-ratio: 1 / 1; }

/* ---------- 网格 ---------- */
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 28px);
}
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }

.layout-aside {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: clamp(20px, 3vw, 42px);
  align-items: start;
}

/* ---------- 滚动进度 ---------- */
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 120;
  width: 100%;
  height: 2px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--violet) 58%, var(--orange) 100%);
  pointer-events: none;
}

/* ---------- 入场显现 ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .52s ease, transform .52s cubic-bezier(.2, .7, .3, 1);
  transition-delay: var(--reveal-delay, 0ms);
}
[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- 响应式：平板 ---------- */
@media (max-width: 1024px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .layout-aside { grid-template-columns: minmax(0, 1fr); }
}

/* ---------- 响应式：导航抽屉 ---------- */
@media (max-width: 900px) {
  :root { --gutter: clamp(14px, 4vw, 24px); }
  html { scroll-padding-top: 120px; }

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

  .masthead {
    grid-template-columns: minmax(0, 1fr) auto auto;
    gap: 10px;
    padding: 13px 0 10px;
  }
  .masthead__side--left { display: none; }
  .masthead__brand { justify-self: start; }
  .brand { text-align: left; }
  .brand__name { font-size: clamp(20px, 5.6vw, 26px); }
  .brand__sub { letter-spacing: .16em; margin-top: 5px; }

  .site-nav {
    max-height: 0;
    opacity: 0;
    border-top-color: transparent;
    transition: max-height .34s cubic-bezier(.4, 0, .2, 1), opacity .24s ease, border-color .24s ease;
  }
  .site-header[data-open] .site-nav {
    max-height: 540px;
    opacity: 1;
    border-top-color: var(--line);
  }
  .site-nav__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
    padding: 6px 0 14px;
  }
  .site-nav__item { width: 100%; }
  .site-nav__link {
    display: block;
    padding: 13px 2px;
    border-bottom: 1px solid rgba(36, 64, 92, .6);
    border-left: 2px solid transparent;
    font-size: 14px;
  }
  .site-nav__link[aria-current="page"] {
    border-bottom-color: rgba(36, 64, 92, .6);
    border-left-color: var(--cyan);
    padding-left: 12px;
    background: rgba(47, 242, 207, .06);
  }

  .datastrip { gap: 6px 16px; font-size: 10.5px; }
  .datastrip__item--optional { display: none; }
}

/* ---------- 响应式：手机 ---------- */
@media (max-width: 640px) {
  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }

  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 24px; }
  .footer-top { align-items: flex-start; }

  .prose { font-size: 16px; }
  .card { padding: 17px; }
}

@media (max-width: 480px) {
  .brand__name { font-size: 19px; }
  .brand__sub { display: none; }
  .btn { padding: 9px 12px; font-size: 11.5px; letter-spacing: .04em; }
  .nav-toggle { padding: 9px 11px; }
  .nav-toggle__text { display: none; }
  .footer-base__line { font-size: 11.5px; }
}

/* ---------- 降低动态效果 ---------- */
@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;
  }

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

  .btn:hover,
  .site-nav__link:hover { transform: none; }

  .scroll-progress { display: none; }
}

/* ---------- 打印 ---------- */
@media print {
  body { background: #fff; color: #000; }
  .site-header, .site-footer, .scroll-progress, .skip-link { display: none; }
}