/* =========================================================
   乐鱼赛事 · 全站共享外壳样式  /assets/site.css
   ========================================================= */

/* ---------- 1. 设计令牌 ---------- */
:root {
  --night: #061726;
  --blueprint: #0E2A47;
  --grid: #1B4877;
  --orange: #FF7A18;
  --orange-soft: #FFB469;
  --cyan: #2FE3C8;
  --cyan-soft: #8FF3E4;
  --ice: #E9F2FA;
  --mist: #9FB5C9;
  --paper: #F5F8FB;
  --alert: #FF5A4E;

  --ink: #06121d;
  --deep-line: rgba(27, 72, 119, .55);
  --faint-line: rgba(27, 72, 119, .32);

  --shell: 1200px;
  --gutter: clamp(16px, 4vw, 40px);

  --font-sans: "Source Han Sans SC", "Noto Sans SC", "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system,
    "Segoe UI", Roboto, sans-serif;
  --font-mono: "JetBrains Mono", "SFMono-Regular", Menlo, Consolas,
    "DejaVu Sans Mono", "Liberation Mono", monospace;

  --r-sm: 2px;
  --r-md: 4px;
  --ease: cubic-bezier(.22, .7, .25, 1);
}

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-padding-top: 150px;
}

body {
  margin: 0;
  min-height: 100%;
  background-color: var(--night);
  background-image:
    linear-gradient(to right, rgba(27, 72, 119, .13) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 72, 119, .13) 1px, transparent 1px);
  background-size: 64px 64px;
  color: var(--ice);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-weight: 900;
  line-height: 1.25;
  letter-spacing: -.02em;
  color: var(--ice);
}

p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, picture, svg { display: block; max-width: 100%; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
a { color: var(--cyan); text-decoration: none; }
a:hover { color: var(--orange-soft); }
strong { font-weight: 900; }

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

::selection { background: rgba(255, 122, 24, .35); color: var(--ice); }

/* ---------- 3. 布局骨架 ---------- */
.shell {
  width: min(calc(100% - var(--gutter) * 2), var(--shell));
  margin-inline: auto;
}

.section { padding-block: clamp(40px, 6vw, 84px); }
.section--tight { padding-block: clamp(24px, 4vw, 48px); }

.blueprint {
  background-image:
    linear-gradient(to right, rgba(27, 72, 119, .3) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 72, 119, .3) 1px, transparent 1px);
  background-size: 48px 48px;
}

.rule {
  height: 1px;
  margin: 0;
  border: 0;
  background: linear-gradient(90deg, var(--grid), rgba(27, 72, 119, 0));
}

.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)); }

/* ---------- 4. 页头：居中刊头 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, rgba(6, 23, 38, .99), rgba(6, 23, 38, .93));
  border-bottom: 1px solid var(--grid);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.skip-link {
  position: absolute;
  left: 50%;
  top: -120px;
  transform: translateX(-50%);
  z-index: 120;
  padding: 10px 22px;
  background: var(--cyan);
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  border-radius: 0 0 var(--r-md) var(--r-md);
  transition: top .2s var(--ease);
}
.skip-link:focus { top: 0; color: var(--ink); }

/* 刊头顶部信息带 */
.header-rail {
  border-bottom: 1px solid var(--faint-line);
  background: rgba(4, 14, 24, .6);
}
.header-rail-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 40px;
  padding-block: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}
.rail-brand {
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
  color: var(--mist);
}
.rail-meta { display: flex; flex: 0 0 auto; flex-wrap: wrap; gap: 6px; }
.rail-chip {
  padding: 2px 8px;
  border: 1px solid rgba(27, 72, 119, .95);
  border-radius: var(--r-sm);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mist);
}
.rail-action {
  flex: 0 0 auto;
  padding-bottom: 1px;
  color: var(--orange);
  font-weight: 700;
  border-bottom: 1px solid rgba(255, 122, 24, .45);
  white-space: nowrap;
}
.rail-action:hover { color: var(--orange-soft); border-bottom-color: var(--orange-soft); }

/* 报头 */
.masthead {
  padding-block: clamp(14px, 2.4vw, 26px) clamp(12px, 2vw, 20px);
  text-align: center;
}
.masthead-kicker {
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .34em;
  text-transform: uppercase;
  color: #2F6BA3;
}
.masthead-brand {
  display: inline-block;
  font-size: clamp(30px, 5.4vw, 54px);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -.01em;
  color: var(--ice);
  transform: scaleX(.94);
  text-shadow: 0 0 34px rgba(47, 227, 200, .18);
}
.masthead-brand:hover { color: var(--ice); }
.masthead-tagline {
  margin-top: 10px;
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--mist);
}

/* 栏目导航 */
.nav-bar { border-top: 1px solid var(--faint-line); }
.nav-bar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  padding-block: 4px;
}
.site-nav { flex: 0 1 auto; }
.nav-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: clamp(2px, 2.4vw, 30px);
}
.nav-list a {
  display: block;
  padding: 9px 2px;
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--mist);
  border-bottom: 2px solid transparent;
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
.nav-list a:hover { color: var(--ice); border-bottom-color: var(--orange); }
.nav-list a[aria-current="page"] { color: var(--cyan); border-bottom-color: var(--cyan); }

/* 移动导航按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border: 1px solid var(--grid);
  border-radius: var(--r-sm);
  background: rgba(14, 42, 71, .7);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--ice);
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }
.nav-toggle-bars { position: relative; display: block; width: 16px; height: 10px; }
.nav-toggle-bars::before,
.nav-toggle-bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  background: currentColor;
  transition: transform .2s var(--ease), top .2s var(--ease), bottom .2s var(--ease);
}
.nav-toggle-bars::before { top: 0; }
.nav-toggle-bars::after { bottom: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::before { top: 4px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bars::after { bottom: 4px; transform: rotate(-45deg); }

/* 滚动进度 */
.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: rgba(27, 72, 119, .5);
  pointer-events: none;
}
.scroll-progress-bar {
  display: block;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--orange), var(--cyan));
}

/* ---------- 5. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(56px, 8vw, 110px);
  border-top: 1px solid var(--grid);
  background: linear-gradient(180deg, #04101d 0%, #0a2137 48%, #061726 100%);
  overflow: hidden;
}
.footer-canvas {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .75;
  background-image:
    linear-gradient(to right, rgba(27, 72, 119, .3) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(27, 72, 119, .2) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, #000, transparent 90%);
  mask-image: linear-gradient(180deg, #000, transparent 90%);
}
.footer-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(240px, 1.5fr) repeat(3, minmax(130px, .75fr));
  gap: clamp(28px, 4vw, 52px) clamp(20px, 3vw, 36px);
  padding-block: clamp(44px, 6vw, 72px) clamp(28px, 4vw, 44px);
}

.footer-idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--cyan);
}
.footer-wordmark {
  margin-top: 10px;
  font-size: clamp(26px, 3.4vw, 38px);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -.01em;
  transform: scaleX(.94);
  transform-origin: left center;
  color: var(--ice);
}
.footer-tagline {
  margin-top: 12px;
  max-width: 26em;
  font-size: 14px;
  line-height: 1.7;
  color: var(--mist);
}
.footer-meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }

.footer-col-title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--orange);
}
.footer-links { display: grid; gap: 10px; }
.footer-links a {
  display: inline-block;
  font-size: 15px;
  color: var(--mist);
  transition: color .18s var(--ease), padding-left .18s var(--ease);
}
.footer-links a:hover { color: var(--cyan); padding-left: 6px; }

.footer-contact {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px 32px;
  padding-top: clamp(18px, 3vw, 30px);
  border-top: 1px solid var(--deep-line);
}
.footer-contact-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--cyan);
}
.footer-contact-list { display: flex; flex-wrap: wrap; gap: 10px 32px; }
.footer-contact-list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  font-size: 14px;
}
.footer-contact-key { font-size: 12px; letter-spacing: .08em; color: var(--mist); }
.footer-contact-val {
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--ice);
}
.footer-note {
  flex: 1 1 100%;
  font-size: 12px;
  line-height: 1.7;
  color: #7B93AA;
}

.footer-legal {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 28px;
  padding-block: 18px clamp(24px, 4vw, 40px);
  border-top: 1px solid var(--faint-line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: #7B93AA;
}
.footer-legal-icp { color: var(--mist); }
.footer-copy { margin-left: auto; }

/* 返回顶部 */
.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 32px);
  bottom: clamp(14px, 3vw, 32px);
  z-index: 70;
  padding: 10px 16px;
  border: 1px solid var(--grid);
  border-radius: var(--r-sm);
  background: rgba(14, 42, 71, .94);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--ice);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: opacity .22s var(--ease), transform .22s var(--ease), visibility .22s;
}
.to-top[data-visible] { opacity: 1; visibility: visible; transform: translateY(0); }
.to-top:hover { border-color: var(--cyan); color: var(--cyan); }

/* ---------- 6. 通用组件 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 22px;
  border: 1px solid transparent;
  border-radius: var(--r-sm);
  font-size: 15px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: .04em;
  transition: background-color .18s var(--ease), color .18s var(--ease),
    border-color .18s var(--ease), transform .18s var(--ease);
}
.btn--primary { background: var(--orange); color: var(--ink); }
.btn--primary:hover { background: var(--orange-soft); color: var(--ink); transform: translateY(-1px); }
.btn--ghost {
  border-color: var(--grid);
  background: rgba(14, 42, 71, .55);
  color: var(--ice);
}
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn--quiet { padding-inline: 0; color: var(--cyan); border-color: transparent; }
.btn--quiet:hover { color: var(--orange-soft); }

.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mist);
}
.crumbs li { display: flex; align-items: center; gap: 10px; }
.crumbs li + li::before { content: "/"; color: var(--grid); }
.crumbs a { color: var(--mist); }
.crumbs a:hover { color: var(--cyan); }

.prose {
  max-width: 38em;
  font-size: 17px;
  line-height: 1.78;
}
.prose p { margin: 0 0 1em; }
.prose h2 { margin: 1.6em 0 .6em; font-size: 28px; }
.prose h3 { margin: 1.4em 0 .5em; font-size: 20px; }
.prose ul, .prose ol { margin: 0 0 1em; padding-left: 1.35em; }
.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }
.prose li { margin-top: .4em; }
.prose li::marker { color: var(--orange); }
.prose strong { color: var(--cyan-soft); }

.card {
  position: relative;
  padding: clamp(16px, 2.2vw, 24px);
  background: linear-gradient(180deg, rgba(14, 42, 71, .95), rgba(10, 32, 54, .95));
  border: 1px solid var(--grid);
  border-radius: var(--r-md);
}
.card::before {
  content: "";
  position: absolute;
  top: -1px;
  left: -1px;
  width: 16px;
  height: 16px;
  border-top: 2px solid var(--orange);
  border-left: 2px solid var(--orange);
  border-top-left-radius: var(--r-md);
  pointer-events: none;
}

.paper {
  padding: clamp(16px, 2.2vw, 24px);
  background: var(--paper);
  border: 1px solid #C9D8E6;
  border-radius: var(--r-md);
  color: #0D2B46;
}
.paper h2, .paper h3, .paper h4 { color: #0A2237; }
.paper p, .paper li { color: #2A4763; }
.paper a { color: #0F5F8A; }
.paper a:hover { color: #C4560A; }

.idx {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--orange);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  border: 1px solid rgba(27, 72, 119, .95);
  border-radius: var(--r-sm);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mist);
  white-space: nowrap;
}
.tag--live { color: var(--cyan); border-color: rgba(47, 227, 200, .45); }
.tag--hot { color: var(--orange); border-color: rgba(255, 122, 24, .45); }
.tag--alert { color: var(--alert); border-color: rgba(255, 90, 78, .5); }

/* 图片容器基础规则（供页面阶段放置图片） */
.media-frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--grid);
  border-radius: var(--r-md);
  background-color: var(--blueprint);
  background-image:
    linear-gradient(135deg, rgba(14, 42, 71, .95), rgba(6, 23, 38, .95)),
    repeating-linear-gradient(45deg, rgba(27, 72, 119, .5) 0 1px, transparent 1px 12px);
}
.media-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame figcaption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 10px 14px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--ice);
  background: linear-gradient(180deg, rgba(6, 23, 38, 0), rgba(6, 23, 38, .92));
}
.media-frame[data-ratio="21x9"] { aspect-ratio: 21 / 9; }
.media-frame[data-ratio="16x9"] { aspect-ratio: 16 / 9; }
.media-frame[data-ratio="4x3"] { aspect-ratio: 4 / 3; }
.media-frame[data-ratio="1x1"] { aspect-ratio: 1 / 1; }
.media-frame[data-ratio="3x4"] { aspect-ratio: 3 / 4; }

/* 章节索引 */
[data-toc] { font-size: 14px; }
[data-toc] a {
  display: block;
  padding: 6px 0 6px 12px;
  color: var(--mist);
  border-left: 2px solid rgba(27, 72, 119, .7);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}
[data-toc] a:hover { color: var(--ice); border-left-color: var(--orange); }
[data-toc] a[aria-current="true"] { color: var(--cyan); border-left-color: var(--cyan); }

/* 进入视口显现 */
[data-reveal] { transition: opacity .5s var(--ease), transform .5s var(--ease); }
[data-reveal="out"] { opacity: 0; transform: translateY(14px); }
[data-reveal="in"] { opacity: 1; transform: none; }

/* ---------- 7. 响应式 ---------- */
@media (max-width: 1080px) {
  .footer-inner {
    grid-template-columns: minmax(220px, 1.4fr) repeat(3, minmax(110px, .8fr));
  }
}

@media (max-width: 960px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-inner { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 880px) {
  html { scroll-padding-top: 120px; }
  .nav-bar-inner { justify-content: center; padding-block: 10px; }
  .nav-toggle { display: inline-flex; }
  .site-nav {
    display: none;
    width: 100%;
    max-height: calc(100vh - 180px);
    overflow-y: auto;
  }
  .site-nav[data-open] { display: block; }
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: 8px 14px;
  }
  .nav-list li { width: 100%; }
  .nav-list a {
    padding: 13px 4px;
    font-size: 16px;
    letter-spacing: .04em;
    border-bottom: 1px solid var(--faint-line);
  }
  .nav-list a:hover, .nav-list a[aria-current="page"] { border-bottom-color: var(--cyan); }
  .header-rail-inner { flex-wrap: wrap; justify-content: flex-start; row-gap: 4px; }
  .rail-brand { flex: 1 1 100%; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: minmax(0, 1fr); }
  .footer-inner { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .footer-contact-list { flex-direction: column; gap: 8px; }
  .footer-copy { margin-left: 0; }
  .masthead-brand { transform: scaleX(.96); }
  .footer-wordmark { transform: none; }
}

/* ---------- 8. 动效与可访问性 ---------- */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }
  [data-reveal="out"] { opacity: 1; transform: none; }
  .to-top { transform: none; }
}