/* ============================================================
   开运体育 · 共享样式表 /assets/site.css
   底座：深靛蓝 + 炭黑，高亮：荧光青柠 + 炽橙，辅助：金属银灰
   ============================================================ */

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

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

body, h1, h2, h3, h4, h5, p, ul, ol, li, figure, blockquote, dl, dd, address { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, svg, video { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; }
address { font-style: normal; }
table { border-collapse: collapse; }

:root {
  --ink: #101A38;
  --carbon: #0B0E14;
  --paper: #F2EAD9;
  --lime: #C6F53C;
  --orange: #FF5A1F;
  --silver: #B9BFC9;
  --indigo-mid: #26355F;
  --paper-dark: #D9CEB6;
  --white: #F5F7FA;
  --lime-deep: #7FA31F;

  --edge: rgba(185, 191, 201, 0.2);
  --edge-strong: rgba(185, 191, 201, 0.42);
  --edge-dim: rgba(185, 191, 201, 0.12);

  --font-display: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  --shell-max: 1440px;
  --gutter: 24px;
  --radius: 2px;
  --nav-break: 960px;
}

body {
  background: var(--ink);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  letter-spacing: 0.01em;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(28px, 4.4vw, 56px); }
h2 { font-size: clamp(22px, 2.6vw, 36px); }
h3 { font-size: clamp(18px, 1.6vw, 22px); }

p + p { margin-top: 14px; }

:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: 3px;
}

#main-content { display: block; scroll-margin-top: 104px; }

/* ---------- 通用容器与网格 ---------- */
.container {
  width: 100%;
  max-width: var(--shell-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
.container--narrow { max-width: 900px; }

.section { padding: 64px 0; }
.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px 24px;
  padding-bottom: 16px;
  border-bottom: 3px solid var(--edge);
  margin-bottom: 28px;
}
.eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--lime);
}
.lede {
  font-size: 17px;
  line-height: 1.75;
  color: rgba(245, 247, 250, 0.84);
  max-width: 64ch;
}

.grid { display: grid; gap: 20px; }
.grid--2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid--split { grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 32px; }

.stack > * + * { margin-top: 16px; }
.divider { height: 3px; border: 0; background: var(--edge); margin: 32px 0; }

/* ---------- 通用按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.1em;
  padding: 13px 22px;
  border: 3px solid var(--carbon);
  border-radius: var(--radius);
  background: var(--carbon);
  color: var(--white);
  text-decoration: none;
  cursor: pointer;
  box-shadow: 4px 4px 0 rgba(198, 245, 60, 0.24);
  transition: background-color 0.14s ease, color 0.14s ease, border-color 0.14s ease, box-shadow 0.14s ease;
}
.btn:hover {
  background: var(--lime);
  color: var(--carbon);
  border-color: var(--lime);
  box-shadow: 4px 4px 0 var(--orange);
}
.btn--lime {
  background: var(--lime);
  color: var(--carbon);
  border-color: var(--lime);
  box-shadow: 4px 4px 0 rgba(11, 14, 20, 0.55);
}
.btn--lime:hover {
  background: var(--white);
  border-color: var(--white);
  box-shadow: 4px 4px 0 var(--orange);
}
.btn--ghost {
  background: transparent;
  color: var(--white);
  border-color: var(--silver);
  box-shadow: none;
}
.btn--ghost:hover {
  background: var(--indigo-mid);
  color: var(--lime);
  border-color: var(--lime);
  box-shadow: none;
}

/* ---------- 面包屑 ---------- */
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--silver);
}
.breadcrumb ol { display: flex; flex-wrap: wrap; align-items: center; }
.breadcrumb li { display: inline-flex; align-items: center; }
.breadcrumb li::after {
  content: "/";
  margin: 0 10px;
  color: var(--lime-deep);
}
.breadcrumb li:last-child::after { content: ""; }
.breadcrumb a {
  text-decoration: none;
  border-bottom: 1px solid var(--edge-strong);
  padding-bottom: 1px;
  transition: color 0.14s ease, border-color 0.14s ease;
}
.breadcrumb a:hover { color: var(--lime); border-bottom-color: var(--lime); }

/* ---------- 档案卡 / 标签 ---------- */
.file-card {
  background: var(--indigo-mid);
  border: 3px solid var(--edge-strong);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 6px 6px 0 rgba(11, 14, 20, 0.55);
  transition: border-color 0.16s ease, transform 0.16s ease;
}
.file-card:hover { border-color: var(--lime); transform: translate(-2px, -2px); }
.file-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 14px;
  margin-bottom: 10px;
}
.file-card__title { font-size: 19px; font-weight: 900; letter-spacing: -0.01em; }
.file-card__meta {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--silver);
}
.file-card__num {
  font-family: var(--font-mono);
  font-size: 34px;
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
  font-variant-numeric: tabular-nums;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 9px;
  border: 2px solid currentColor;
  border-radius: var(--radius);
  color: var(--silver);
}
.tag--lime { color: var(--lime); }
.tag--orange { color: var(--orange); }

/* ---------- 数据带 ---------- */
.data-band {
  border: 3px solid var(--edge-strong);
  background: var(--carbon);
  border-radius: var(--radius);
  overflow-x: auto;
}
.data-band table { width: 100%; min-width: 520px; font-size: 14px; }
.data-band caption {
  caption-side: top;
  text-align: left;
  padding: 12px 14px 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--silver);
}
.data-band th {
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  text-align: left;
  color: var(--lime);
  padding: 12px 14px;
  border-bottom: 3px solid var(--indigo-mid);
  white-space: nowrap;
}
.data-band td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--edge-dim);
  font-variant-numeric: tabular-nums;
}
.data-band tbody tr:nth-child(even) { background: rgba(38, 53, 95, 0.35); }
.data-band tbody tr:hover { background: var(--indigo-mid); }

/* ---------- 图片容器（页面阶段放置媒体） ---------- */
.figure-frame {
  position: relative;
  border: 3px solid var(--edge-strong);
  border-radius: var(--radius);
  background: var(--carbon);
  overflow: hidden;
}
.figure-frame__media {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  filter: grayscale(0.16) contrast(1.08);
}
.figure-frame__media--empty {
  display: grid;
  place-items: center;
  width: 100%;
  aspect-ratio: 16 / 9;
  min-height: 160px;
  background-image: repeating-linear-gradient(
    135deg,
    rgba(38, 53, 95, 0.6) 0 10px,
    rgba(11, 14, 20, 0.6) 10px 20px
  );
  color: var(--silver);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.figure-frame__cap {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--silver);
  padding: 10px 14px;
  border-top: 2px solid var(--edge);
  background: var(--carbon);
}
.figure-frame--tall .figure-frame__media,
.figure-frame--tall .figure-frame__media--empty { aspect-ratio: 3 / 4; }
.figure-frame--portrait .figure-frame__media,
.figure-frame--portrait .figure-frame__media--empty { aspect-ratio: 4 / 5; }
.figure-frame--square .figure-frame__media,
.figure-frame--square .figure-frame__media--empty { aspect-ratio: 1 / 1; }

/* ---------- 无障碍与工具类 ---------- */
.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;
}

.skip-link {
  position: absolute;
  left: 14px;
  top: -120px;
  z-index: 999;
  display: inline-block;
  padding: 10px 16px;
  background: var(--lime);
  color: var(--carbon);
  border: 3px solid var(--carbon);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-decoration: none;
  transition: top 0.15s ease;
}
.skip-link:focus { top: 14px; }

/* ============================================================
   头部
   ============================================================ */
.scroll-meter {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 220;
  height: 3px;
  width: 0;
  background: var(--lime);
  pointer-events: none;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 180;
  background: var(--carbon);
}

.masthead {
  background: var(--ink);
  border-bottom: 3px solid var(--carbon);
}
.masthead__inner {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 13px var(--gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 13px;
  text-decoration: none;
  min-width: 0;
}
.brand__mark {
  width: 46px;
  height: 46px;
  flex: 0 0 46px;
  display: grid;
  place-items: center;
  background: var(--lime);
  color: var(--carbon);
  border: 3px solid var(--lime);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 21px;
  font-weight: 700;
  letter-spacing: -0.04em;
  box-shadow: 4px 4px 0 rgba(198, 245, 60, 0.26);
  transition: background-color 0.14s ease, color 0.14s ease;
}
.brand:hover .brand__mark { background: var(--white); border-color: var(--white); }
.brand__text { display: flex; flex-direction: column; line-height: 1.25; min-width: 0; }
.brand__name {
  font-family: var(--font-display);
  font-size: 19px;
  font-weight: 900;
  letter-spacing: 0.06em;
  color: var(--white);
}
.brand__tag {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--silver);
  white-space: nowrap;
}

.masthead__tools {
  display: flex;
  align-items: center;
  gap: 18px;
  flex: 0 0 auto;
}

.season-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  background: var(--carbon);
  border: 2px solid var(--edge-strong);
  border-radius: var(--radius);
  padding: 3px;
}
.season-switch__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--silver);
  padding: 0 4px 0 10px;
}
.season-switch__opt {
  appearance: none;
  background: transparent;
  border: 0;
  border-radius: 1px;
  cursor: pointer;
  position: relative;
  z-index: 2;
  padding: 8px 13px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--silver);
  font-variant-numeric: tabular-nums;
  transition: color 0.14s ease;
}
.season-switch__opt:hover { color: var(--white); }
.season-switch__opt[aria-pressed="true"] { color: var(--lime); }
.season-switch__bar {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 1;
  width: 0;
  height: 3px;
  background: var(--lime);
  transition: transform 0.18s ease, width 0.18s ease;
}

.masthead__mail {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--silver);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid var(--edge-strong);
  transition: color 0.14s ease, border-color 0.14s ease;
}
.masthead__mail:hover { color: var(--lime); border-bottom-color: var(--lime); }

.nav-bar {
  position: relative;
  background: var(--carbon);
  border-bottom: 3px solid var(--indigo-mid);
}
.nav-bar__inner {
  position: relative;
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  min-height: 54px;
  display: flex;
  align-items: stretch;
  justify-content: space-between;
  gap: 16px;
}

.site-nav { display: flex; align-items: stretch; }
.site-nav__list { display: flex; align-items: stretch; flex-wrap: wrap; }

.site-nav a {
  position: relative;
  display: flex;
  align-items: center;
  height: 100%;
  padding: 14px 20px;
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0.05em;
  color: var(--silver);
  text-decoration: none;
  border-right: 2px solid var(--edge-dim);
  transition: color 0.14s ease, background-color 0.14s ease;
}
.site-nav li:first-child a { border-left: 2px solid var(--edge-dim); }
.site-nav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 3px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform 0.18s ease;
}
.site-nav a:hover { color: var(--white); background: var(--indigo-mid); }
.site-nav a:hover::after { transform: scaleX(1); }
.site-nav a[aria-current="page"] { background: var(--lime); color: var(--carbon); }
.site-nav a[aria-current="page"]::after { transform: scaleX(1); background: var(--carbon); }

.nav-bar__hint {
  align-self: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(185, 191, 201, 0.62);
  white-space: nowrap;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 10px;
  align-self: center;
  background: transparent;
  border: 0;
  border-radius: var(--radius);
  cursor: pointer;
  padding: 12px 2px;
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.16em;
}
.nav-toggle__bars { display: grid; gap: 4px; width: 22px; }
.nav-toggle__bars i {
  display: block;
  height: 3px;
  width: 100%;
  background: var(--lime);
  transition: transform 0.2s ease, opacity 0.2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  background: var(--carbon);
  color: var(--silver);
  border-top: 3px solid var(--indigo-mid);
}
.footer-grid {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 54px var(--gutter) 34px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 34px;
}
.footer-col__title {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--lime);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--edge);
}
.footer-list li + li { margin-top: 9px; }
.footer-list a {
  font-size: 14px;
  color: var(--silver);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.14s ease, border-color 0.14s ease;
}
.footer-list a:hover { color: var(--white); border-bottom-color: var(--orange); }

.footer-contact__row {
  display: flex;
  gap: 10px;
  font-size: 14px;
  line-height: 1.65;
  margin-bottom: 10px;
}
.footer-contact__key {
  flex: 0 0 42px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--lime);
  padding-top: 4px;
}
.footer-contact__val { color: var(--silver); word-break: break-word; }

.footer-note {
  font-size: 13px;
  line-height: 1.7;
  color: rgba(185, 191, 201, 0.78);
  margin-top: 14px;
  padding-left: 12px;
  border-left: 3px solid var(--orange);
}

.footer-base {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 18px var(--gutter) 30px;
  border-top: 2px solid var(--edge);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
}
.footer-base__brand { color: var(--white); font-weight: 700; }
.footer-base__icp { color: var(--silver); }
.footer-base__meta { color: rgba(185, 191, 201, 0.62); }

/* ============================================================
   显现动效协议（页面阶段给块加 data-reveal）
   ============================================================ */
.js-ready [data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
.js-ready [data-reveal].is-in { opacity: 1; transform: none; }

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

@media (max-width: 1000px) {
  .grid--split { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 960px) {
  .nav-toggle { display: inline-flex; }
  .nav-bar__hint { display: none; }

  .site-nav {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    z-index: 175;
    display: block;
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    background: var(--ink);
    border-bottom: 3px solid var(--lime);
    transition: max-height 0.28s ease, visibility 0.28s ease;
  }
  .site-nav[data-open] {
    max-height: 78vh;
    overflow-y: auto;
    visibility: visible;
  }
  .site-nav__list { flex-direction: column; }
  .site-nav a {
    height: auto;
    padding: 15px 20px 15px 24px;
    border-right: 0;
    border-left: 3px solid var(--edge-strong);
    border-bottom: 2px solid var(--edge-dim);
    font-size: 15px;
  }
  .site-nav li:first-child a { border-left: 3px solid var(--edge-strong); }
  .site-nav a::after { display: none; }
  .site-nav a[aria-current="page"] { border-left-color: var(--carbon); }
}

@media (max-width: 860px) {
  .grid--2 { grid-template-columns: minmax(0, 1fr); }
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
  .section { padding: 48px 0; }
  .footer-grid { padding-top: 44px; }
}

@media (max-width: 680px) {
  :root { --gutter: 16px; }
  body { font-size: 15px; line-height: 1.7; }
  .masthead__inner { padding: 12px var(--gutter); gap: 12px; }
  .brand__tag { display: none; }
  .brand__mark { width: 40px; height: 40px; flex-basis: 40px; font-size: 18px; }
  .brand__name { font-size: 17px; }
  .season-switch__label { display: none; }
  .season-switch__opt { padding: 7px 10px; font-size: 12px; }
  .masthead__tools { gap: 10px; }
  .footer-grid { grid-template-columns: minmax(0, 1fr); gap: 26px; }
  .footer-base { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 520px) {
  .masthead__mail { display: none; }
  .file-card { padding: 16px; }
  .section__head { margin-bottom: 22px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .js-ready [data-reveal] { opacity: 1 !important; transform: none !important; }
  .site-nav a::after { transform: none; }
}