/* =========================================================
   KAIYUN赛事 · 共享样式表  /assets/site.css
   深海数据指挥室 · 堆叠面板 · 居中刊头 · 等宽索引
   ========================================================= */

/* ---------- 1. 设计变量 ---------- */
:root {
  --abyss: #06182B;
  --panel: #0D2942;
  --panel-2: #0A2238;
  --line: #1D4160;
  --cyan: #17E5C8;
  --orange: #FF7A2F;
  --gold: #F3B846;
  --ink: #F4F8FC;
  --ink-soft: #D7E4EE;
  --muted: #9FB6C9;
  --goal: #2FD68A;
  --conceded: #FF5C7A;
  --grad-top: #0A3357;
  --grad-bottom: #06182B;

  --r-lg: 28px;
  --r-md: 18px;
  --r-sm: 12px;
  --pill: 999px;

  --wrap-w: 1240px;
  --gutter: 24px;
  --stack: clamp(56px, 8vw, 96px);
  --panel-pad: clamp(24px, 4vw, 44px);

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

  --shadow-panel: 0 22px 48px -34px rgba(0, 0, 0, 0.95);
  --shadow-float: 0 26px 60px -34px rgba(0, 0, 0, 0.95);
}

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

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

body,
h1, h2, h3, h4, h5, h6,
p, ul, ol, li, figure, blockquote, dl, dd, dt {
  margin: 0;
}

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

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

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

button { background: none; border: 0; }

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

table { border-collapse: collapse; width: 100%; }

/* ---------- 3. 页面基底与中文排版 ---------- */
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: clip;
  background-color: var(--abyss);
  background-image:
    linear-gradient(rgba(29, 65, 96, 0.20) 1px, transparent 1px),
    linear-gradient(90deg, rgba(29, 65, 96, 0.20) 1px, transparent 1px);
  background-size: 88px 88px;
  background-position: -1px -1px;
  color: var(--ink);
  font-family: var(--font-head);
  font-size: 16px;
  line-height: 1.8;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.3;
  color: var(--ink);
}

p { text-wrap: pretty; }

::selection {
  background: rgba(23, 229, 200, 0.28);
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}

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

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

/* ---------- 4. 通用容器与网格 ---------- */
.wrap {
  width: 100%;
  max-width: var(--wrap-w);
  margin-inline: auto;
  padding-inline: clamp(16px, 4vw, 32px);
}

.section { padding-block: clamp(40px, 6vw, 72px); }

.stack-panels {
  display: grid;
  gap: var(--stack);
}

.grid {
  display: grid;
  gap: var(--gutter);
}

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

/* ---------- 5. 跳过链接 ---------- */
.skip-link {
  position: absolute;
  left: clamp(16px, 4vw, 32px);
  top: -72px;
  z-index: 120;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 20px;
  border-radius: var(--pill);
  background: var(--cyan);
  color: #04202A;
  font-weight: 700;
  font-size: 14px;
  transition: top 0.18s ease;
}

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

/* ---------- 6. 头部：居中刊头 + 栏目带 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 80;
  background: rgba(6, 24, 43, 0.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}

.site-header__inner { position: relative; }

.scroll-progress {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  z-index: 4;
  background: linear-gradient(90deg, var(--cyan), var(--gold) 55%, var(--orange));
  transform: scaleX(0);
  transform-origin: 0 50%;
  pointer-events: none;
}

.masthead-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: clamp(12px, 2vw, 28px);
  padding: 16px 0 12px;
}

.index-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.4;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

.index-chip::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--cyan);
}

.index-chip--lead { justify-self: start; }
.index-chip--tail { justify-self: end; }

.masthead {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  text-align: center;
}

.masthead__brand {
  font-size: clamp(20px, 2.4vw, 28px);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  padding: 2px 12px;
  border-radius: var(--pill);
  transition: color 0.16s ease;
}

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

.masthead__tagline {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--muted);
}

.site-header__actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
}

/* ---------- 7. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 20px;
  border-radius: var(--pill);
  border: 1px solid transparent;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
  cursor: pointer;
  transition: transform 0.16s ease, background-color 0.16s ease, color 0.16s ease, border-color 0.16s ease;
}

.btn--primary {
  background: var(--cyan);
  color: #04202A;
  box-shadow: 0 14px 30px -18px rgba(23, 229, 200, 0.9);
}

.btn--primary:hover {
  background: #3DF0D6;
  transform: translateY(-1px);
}

.btn--ghost {
  background: rgba(13, 41, 66, 0.5);
  border-color: var(--line);
  color: var(--ink);
}

.btn--ghost:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 8. 移动导航按钮 ---------- */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 16px;
  border-radius: var(--pill);
  border: 1px solid var(--line);
  background: rgba(13, 41, 66, 0.72);
  color: var(--ink);
  cursor: pointer;
}

.nav-toggle__label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bar {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
  transition: transform 0.18s ease, opacity 0.18s ease;
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 9. 主导航 ---------- */
.site-nav { border-top: 1px solid var(--line); }

.site-nav__list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 2px;
  padding: 6px 0 10px;
}

.site-nav__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: var(--pill);
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--muted);
  transition: color 0.16s ease, background-color 0.16s ease, box-shadow 0.16s ease;
}

.site-nav__link:hover {
  color: var(--ink);
  background: rgba(23, 229, 200, 0.08);
}

.site-nav__link[aria-current="page"] {
  color: var(--cyan);
  background: rgba(23, 229, 200, 0.10);
  box-shadow: inset 0 0 0 1px rgba(23, 229, 200, 0.42);
}

.site-nav__action { display: none; }

/* ---------- 10. 页脚 ---------- */
.site-footer {
  margin-top: auto;
  padding-top: var(--stack);
  background: var(--panel-2);
  border-top: 1px solid var(--line);
}

.site-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 340px) minmax(0, 1fr);
  gap: clamp(32px, 5vw, 64px);
  padding-block: clamp(40px, 6vw, 72px) clamp(24px, 4vw, 40px);
}

.site-footer__lead { min-width: 0; }

.site-footer__brand {
  display: inline-block;
  margin-top: 14px;
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--ink);
  transition: color 0.16s ease;
}

.site-footer__brand:hover { color: var(--cyan); }

.site-footer__summary {
  margin-top: 12px;
  max-width: 34ch;
  font-size: 15px;
  color: var(--muted);
}

.site-footer__note {
  margin-top: 16px;
  padding-left: 12px;
  border-left: 2px solid var(--gold);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

.site-footer__columns {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 24px;
}

.site-footer__col { min-width: 0; }

.site-footer__col-title {
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--cyan);
}

.site-footer__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.site-footer__link {
  font-size: 14px;
  color: var(--muted);
  transition: color 0.16s ease;
}

.site-footer__link:hover { color: var(--ink); }

.site-footer__link[aria-current="page"] { color: var(--gold); }

.site-footer__meta {
  grid-column: 1 / -1;
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px 32px;
  margin-top: 8px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
}

.site-footer__contact {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  min-width: 0;
}

.site-footer__contact-item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.site-footer__contact-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--muted);
  opacity: 0.85;
}

.site-footer__contact-value {
  color: var(--ink-soft);
  word-break: break-word;
}

.site-footer__legal {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
}

/* ---------- 11. 堆叠面板 ---------- */
.panel {
  position: relative;
  padding: var(--panel-pad);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--panel);
  box-shadow: var(--shadow-panel);
}

.panel__index {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
  transition: color 0.16s ease;
}

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

.panel__title {
  margin-top: 12px;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  letter-spacing: -0.02em;
}

.panel__lead {
  margin-top: 10px;
  max-width: 60ch;
  font-size: 15px;
  color: var(--muted);
}

.panel__body { margin-top: 24px; }

/* ---------- 12. 越界锚点数据卡 ---------- */
.anchor-card {
  position: relative;
  z-index: 3;
  padding: 20px 22px;
  margin-right: calc(-1 * clamp(12px, 2vw, 28px));
  border: 1px solid rgba(23, 229, 200, 0.35);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, #0F3457 0%, #0A243C 100%);
  box-shadow: var(--shadow-float);
}

/* ---------- 13. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 28px;
  padding: 3px 12px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: rgba(13, 41, 66, 0.8);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

.tag--live {
  color: var(--cyan);
  border-color: rgba(23, 229, 200, 0.45);
  background: rgba(23, 229, 200, 0.08);
}

.tag--gold {
  color: var(--gold);
  border-color: rgba(243, 184, 70, 0.45);
  background: rgba(243, 184, 70, 0.08);
}

.tag--goal {
  color: var(--goal);
  border-color: rgba(47, 214, 138, 0.42);
  background: rgba(47, 214, 138, 0.08);
}

.tag--conceded {
  color: var(--conceded);
  border-color: rgba(255, 92, 122, 0.42);
  background: rgba(255, 92, 122, 0.08);
}

/* ---------- 14. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  display: block;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, var(--grad-top) 0%, var(--grad-bottom) 100%);
  overflow: hidden;
}

.media-frame img,
.media-frame picture,
.media-frame svg {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.media-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(23, 229, 200, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(23, 229, 200, 0.08) 1px, transparent 1px);
  background-size: 32px 32px;
}

.media-frame__caption {
  position: absolute;
  left: 14px;
  bottom: 12px;
  z-index: 3;
  max-width: calc(100% - 28px);
  padding: 4px 12px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: rgba(6, 24, 43, 0.76);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.1em;
  color: var(--ink);
}

.media-frame--16x9 { aspect-ratio: 16 / 9; }
.media-frame--4x3  { aspect-ratio: 4 / 3; }
.media-frame--1x1  { aspect-ratio: 1 / 1; }
.media-frame--21x9 { aspect-ratio: 21 / 9; }

/* ---------- 15. 面包屑 ---------- */
.crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-block: 20px 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.crumbs__link {
  color: var(--muted);
  transition: color 0.16s ease;
}

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

.crumbs__sep {
  color: var(--line);
  user-select: none;
}

.crumbs__item[aria-current="page"] { color: var(--ink); }

/* ---------- 16. 正文容器 ---------- */
.prose {
  max-width: 68ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.prose > * + * { margin-top: 1em; }

.prose h2 {
  margin-top: 1.8em;
  font-size: 22px;
  font-weight: 800;
  color: var(--ink);
}

.prose h3 {
  margin-top: 1.5em;
  font-size: 18px;
  font-weight: 700;
  color: var(--ink);
}

.prose strong {
  color: var(--ink);
  font-weight: 700;
}

.prose a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.prose ul,
.prose ol {
  padding-left: 0;
}

.prose li {
  position: relative;
  padding-left: 18px;
  margin-top: 0.4em;
}

.prose li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75em;
  width: 6px;
  height: 6px;
  border-radius: 2px;
  background: var(--cyan);
}

/* ---------- 17. 出场动效与返回顶部 ---------- */
html.has-js .reveal {
  opacity: 0;
  transform: translateY(8px);
}

html.has-js .reveal.is-in {
  opacity: 1;
  transform: none;
  transition: opacity 0.24s ease, transform 0.24s ease;
}

.to-top {
  position: fixed;
  right: clamp(14px, 3vw, 28px);
  bottom: clamp(14px, 3vw, 28px);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: rgba(13, 41, 66, 0.94);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease, border-color 0.16s ease;
}

.to-top:hover { border-color: var(--cyan); color: var(--cyan); }

.to-top[data-visible] {
  opacity: 1;
  visibility: visible;
  transform: none;
}

html.nav-open .to-top {
  opacity: 0;
  visibility: hidden;
}

/* ---------- 18. 响应式：平板 ---------- */
@media (max-width: 1100px) {
  .grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 980px) {
  .grid--7-5,
  .grid--8-4 { grid-template-columns: minmax(0, 1fr); }

  .site-footer__inner { grid-template-columns: minmax(0, 1fr); }
  .site-footer__columns { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px 24px; }
}

/* ---------- 19. 响应式：移动与底部抽屉导航 ---------- */
@media (max-width: 900px) {
  .index-chip { display: none; }

  .masthead-grid {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    padding: 12px 0 10px;
  }

  .masthead {
    align-items: flex-start;
    text-align: left;
  }

  .site-header__actions { justify-content: flex-end; gap: 8px; }
  .site-header__actions > .btn--primary { display: none; }

  .site-nav { border-top: 1px solid var(--line); }
  .site-nav__list { padding: 6px 0 10px; }

  html.has-js .site-nav {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 90;
    max-height: 82vh;
    overflow-y: auto;
    padding: 20px 16px calc(24px + env(safe-area-inset-bottom, 0px));
    border: 1px solid var(--line);
    border-bottom: 0;
    border-radius: 24px 24px 0 0;
    background: var(--panel);
    box-shadow: 0 -24px 56px -24px rgba(0, 0, 0, 0.85);
    transform: translateY(105%);
    transition: transform 0.24s ease;
  }

  html.has-js .site-nav[data-open] { transform: translateY(0); }

  html.has-js .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 0;
  }

  html.has-js .site-nav__link {
    width: 100%;
    justify-content: flex-start;
    padding: 0 16px;
    border-radius: 14px;
    font-size: 15px;
  }

  html.has-js .site-nav__action {
    display: block;
    margin-top: 14px;
  }

  html.has-js .site-nav__action .btn { width: 100%; }

  html.has-js .nav-toggle { display: inline-flex; }

  .section { padding-block: clamp(32px, 7vw, 56px); }
}

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

  .site-footer__columns { grid-template-columns: minmax(0, 1fr); }

  .site-footer__meta { flex-direction: column; }

  .panel { border-radius: var(--r-md); }

  .anchor-card { margin-right: 0; }

  .masthead__brand { padding-inline: 4px; }
}

/* ---------- 20. 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;
  }

  html.has-js .reveal {
    opacity: 1;
    transform: none;
  }

  .scroll-progress { display: none; }
}