/* =========================================================
   亚慱体育 · 共享样式表 /assets/site.css
   框架式导航 + 目录型内容地图 + 草原绿×数据蓝
   ========================================================= */

/* ---------- 1. Reset ---------- */
*,
*::before,
*::after { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  background: #F6F7F4;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--frame-h) + 24px);
}

body {
  margin: 0;
  min-height: 100vh;
  padding-top: calc(var(--frame-h) + 1px);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.75;
  color: var(--ink);
  background: transparent;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5, h6, p, figure, blockquote, dl, dd { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }
img, svg, video, canvas { display: block; max-width: 100%; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: inherit; }
table { border-collapse: collapse; width: 100%; }
hr { border: 0; }

/* ---------- 2. 变量 ---------- */
:root {
  --green: #0E7A55;
  --green-deep: #07402F;
  --green-soft: #DCEEE6;
  --blue: #1447D6;
  --blue-deep: #0A2260;
  --blue-soft: #E4E9FB;
  --orange: #F26A21;
  --silver: #C3CBD3;
  --ink: #0C1015;
  --paper: #F6F7F4;

  --font-head: "Noto Sans SC", "Source Han Sans SC", "PingFang SC",
               "Hiragino Sans GB", "Microsoft YaHei", system-ui, -apple-system, sans-serif;
  --font-body: var(--font-head);
  --font-mono: "Roboto Mono", "IBM Plex Mono", "SFMono-Regular", Consolas,
               "Liberation Mono", "Menlo", monospace;

  --frame-h: 84px;
  --gutter: clamp(16px, 3.4vw, 44px);
  --maxw: 1480px;
  --t-fast: .12s ease;
  --t-base: .2s ease;
}

::selection { background: var(--green); color: var(--paper); }

/* ---------- 3. 可见网格底纹 ---------- */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(195, 203, 211, .34) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(195, 203, 211, .34) 1px, transparent 1px);
  background-size: clamp(64px, 8vw, 112px) clamp(64px, 8vw, 112px);
  mask-image: linear-gradient(to bottom, transparent, #000 18%, #000 82%, transparent);
  -webkit-mask-image: linear-gradient(to bottom, transparent, #000 18%, #000 82%, transparent);
}

/* ---------- 4. 焦点与无障碍 ---------- */
:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 2px;
}
.site-foot :focus-visible,
.site-frame :focus-visible {
  outline: 2px solid var(--orange);
  outline-offset: 2px;
}

.skip-link {
  position: fixed;
  top: 0; left: 0;
  z-index: 400;
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 700;
  color: var(--paper);
  background: var(--ink);
  text-decoration: none;
  transform: translateY(-140%);
  transition: transform var(--t-base);
}
.skip-link:focus { transform: translateY(0); }

/* ---------- 5. 布局容器 ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section { padding-block: clamp(36px, 5vw, 72px); }
.section--tight { padding-block: clamp(20px, 3vw, 40px); }

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 22px;
  padding-bottom: 16px;
  margin-bottom: clamp(18px, 2.4vw, 30px);
  border-bottom: 2px solid var(--ink);
}
.section-head__title {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.2;
  letter-spacing: -.02em;
}
.section-head__aside {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: rgba(12, 16, 21, .55);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: .6em;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--green);
}
.section-label::before {
  content: "";
  width: 18px;
  height: 1px;
  background: currentColor;
}

.rule { height: 1px; background: var(--silver); border: 0; margin: 0; }
.rule--green { background: var(--green); }
.rule--thick { height: 2px; background: var(--ink); }

/* ---------- 6. 网格系统 ---------- */
.grid {
  display: grid;
  gap: clamp(16px, 2.4vw, 32px);
}
.grid--3-9 { grid-template-columns: minmax(0, 3fr) minmax(0, 9fr); }
.grid--5-7 { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); }
.grid--7-5 { grid-template-columns: minmax(0, 7fr) minmax(0, 5fr); }
.grid--3   { grid-template-columns: repeat(3, minmax(0, 1fr)); }

/* ---------- 7. 通用文本件 ---------- */
.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum" 1;
  letter-spacing: -.01em;
}

.note-rot {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .24em;
  line-height: 1;
  color: var(--blue);
}

.prose { max-width: 40em; }
.prose > p + p { margin-top: 1em; }
.prose h2 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(21px, 2.4vw, 28px);
  line-height: 1.3;
  letter-spacing: -.015em;
  margin-top: 1.9em;
}
.prose h3 {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 18px;
  margin-top: 1.6em;
}
.prose ul { margin-top: 1em; }
.prose ul li {
  position: relative;
  padding-left: 1.4em;
}
.prose ul li + li { margin-top: .4em; }
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .82em;
  width: 9px;
  height: 1px;
  background: var(--orange);
}
.prose a {
  color: var(--blue);
  text-underline-offset: 3px;
}

/* ---------- 8. 按钮 ---------- */
.btn {
  --btn-bg: var(--green);
  --btn-fg: var(--paper);
  --btn-bd: var(--green);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5em;
  padding: 12px 22px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .02em;
  color: var(--btn-fg);
  background: var(--btn-bg);
  border: 1px solid var(--btn-bd);
  border-radius: 0;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}
.btn:hover { --btn-bg: var(--green-deep); --btn-bd: var(--green-deep); }

.btn--blue { --btn-bg: var(--blue); --btn-bd: var(--blue); }
.btn--blue:hover { --btn-bg: var(--blue-deep); --btn-bd: var(--blue-deep); }

.btn--ghost { --btn-bg: transparent; --btn-fg: var(--ink); --btn-bd: var(--silver); }
.btn--ghost:hover { --btn-bg: transparent; --btn-fg: var(--blue); --btn-bd: var(--blue); }

.btn--sm { padding: 9px 15px; font-size: 13px; }

/* ---------- 9. 标签 ---------- */
.tag {
  display: inline-flex;
  align-items: center;
  gap: .4em;
  padding: 4px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--green-deep);
  background: var(--green-soft);
  border: 1px solid rgba(14, 122, 85, .24);
  border-radius: 0;
}
.tag--blue {
  color: var(--blue-deep);
  background: var(--blue-soft);
  border-color: rgba(20, 71, 214, .24);
}
.tag--orange {
  color: #14100D;
  background: var(--orange);
  border-color: var(--orange);
}

/* ---------- 10. 面包屑 ---------- */
.crumb {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
}
.crumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5em;
}
.crumb li { display: flex; align-items: center; gap: .5em; }
.crumb li + li::before { content: "/"; color: var(--silver); }
.crumb a { color: var(--blue); text-decoration: none; }
.crumb a:hover { text-decoration: underline; text-underline-offset: 3px; }

/* ---------- 11. 目录条目 ---------- */
.entry {
  display: block;
  padding: 18px 0;
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--silver);
  transition: border-color var(--t-fast);
}
.entry:hover { border-bottom-color: var(--green); }
.entry__idx {
  display: block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--green);
  margin-bottom: 6px;
}
.entry__title {
  display: block;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(18px, 2vw, 22px);
  line-height: 1.35;
  letter-spacing: -.01em;
}
.entry__meta {
  display: block;
  margin-top: 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: rgba(12, 16, 21, .55);
}

/* ---------- 12. 图像容器 ---------- */
.media {
  position: relative;
  display: block;
  overflow: hidden;
  background: var(--blue-deep);
  border: 1px solid var(--silver);
}
.media > img,
.media > picture > img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media--16x9 { aspect-ratio: 16 / 9; }
.media--4x3 { aspect-ratio: 4 / 3; }
.media--3x4 { aspect-ratio: 3 / 4; }
.media--square { aspect-ratio: 1 / 1; }
.media--banner { aspect-ratio: 32 / 9; }

.media__cap {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 9px 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--paper);
  background: linear-gradient(to top, rgba(10, 34, 96, .88), rgba(10, 34, 96, 0));
}

.media[data-placeholder]::after {
  content: attr(data-placeholder);
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: rgba(246, 247, 244, .55);
  background-image:
    linear-gradient(135deg, rgba(255, 255, 255, .06) 25%, transparent 25%, transparent 50%,
                    rgba(255, 255, 255, .06) 50%, rgba(255, 255, 255, .06) 75%, transparent 75%);
  background-size: 16px 16px;
}

/* ---------- 13. 数据带 ---------- */
.data-band {
  padding: clamp(20px, 3vw, 38px) 0;
  color: var(--paper);
  background: var(--blue-deep);
  border-top: 2px solid var(--orange);
}
.data-band a { color: var(--green-soft); }

/* ---------- 14. 主题筛选 ---------- */
.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.filter-btn {
  appearance: none;
  padding: 8px 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--ink);
  background: var(--paper);
  border: 1px solid var(--silver);
  border-radius: 0;
  cursor: pointer;
  transition: background var(--t-fast), color var(--t-fast), border-color var(--t-fast);
}
.filter-btn:hover { color: var(--green-deep); border-color: var(--green); }
.filter-btn[aria-pressed="true"] {
  color: var(--paper);
  background: var(--green);
  border-color: var(--green);
}

[data-filter-item][hidden] { display: none !important; }

@media (prefers-reduced-motion: no-preference) {
  [data-filter-item]:not([hidden]) {
    animation: filterIn .2s ease both;
  }
}
@keyframes filterIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: none; }
}

/* =========================================================
   15. 头部框架
   ========================================================= */
.site-frame {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  pointer-events: none;
}

.site-frame__edge {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 1px;
  background: var(--green);
  opacity: .42;
  pointer-events: none;
}

.site-frame__bar {
  position: relative;
  display: flex;
  align-items: center;
  gap: clamp(10px, 1.6vw, 24px);
  height: var(--frame-h);
  padding: 0 var(--gutter);
  background: rgba(246, 247, 244, .95);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  backdrop-filter: saturate(140%) blur(8px);
  border-top: 1px solid transparent;
  border-bottom: 1px solid var(--green);
  pointer-events: auto;
  transition: border-color var(--t-base), background var(--t-base);
}
.site-frame__bar[data-condensed="true"] {
  background: rgba(246, 247, 244, .99);
  border-top-color: var(--green);
}

.site-frame__progress {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 3;
  height: 2px;
  width: var(--progress, 0%);
  background: var(--orange);
  pointer-events: none;
}

/* 署名 */
.brand {
  flex: none;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 9px;
  padding-left: 12px;
  border-left: 1px solid var(--green);
  text-decoration: none;
}
.brand__name {
  writing-mode: vertical-rl;
  text-orientation: upright;
  padding-block: 6px;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: 13px;
  line-height: 1;
  letter-spacing: .08em;
  color: var(--green-deep);
}
.brand__role {
  writing-mode: vertical-rl;
  text-orientation: upright;
  padding-block: 6px;
  font-family: var(--font-mono);
  font-size: 9px;
  line-height: 1;
  letter-spacing: .3em;
  color: var(--blue);
}
.brand:hover .brand__name { color: var(--green); }

/* 主导航 */
.site-nav { margin-left: auto; }

.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(2px, 1vw, 16px);
}
.site-nav__item { display: flex; }

.site-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  padding: 11px 6px;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .02em;
  color: var(--ink);
  text-decoration: none;
  transition: color var(--t-fast);
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 6px; right: 6px; bottom: 4px;
  height: 1px;
  background: var(--orange);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--t-fast);
}
.site-nav__link:hover { color: var(--green-deep); }
.site-nav__link:hover::after { transform: scaleX(1); }
.site-nav__link[aria-current="page"] {
  color: var(--blue);
  font-weight: 800;
}
.site-nav__link[aria-current="page"]::after {
  background: var(--blue);
  transform: scaleX(1);
}

/* 右上角紧凑入口 */
.bar-cta {
  flex: none;
  display: inline-flex;
  align-items: center;
  margin-left: clamp(8px, 1.4vw, 20px);
  padding: 9px 15px;
  font-family: var(--font-head);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--paper);
  background: var(--blue-deep);
  border: 1px solid var(--blue-deep);
  border-radius: 0;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--t-fast), border-color var(--t-fast);
}
.bar-cta:hover { background: var(--green-deep); border-color: var(--green-deep); }

/* 抽屉按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  padding: 9px 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--green);
  border-radius: 0;
  cursor: pointer;
  transition: background var(--t-fast);
}
.nav-toggle:hover { background: var(--green-soft); }
.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 9px;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0; right: 0;
  height: 1px;
  background: currentColor;
  transition: transform var(--t-fast);
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after { bottom: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before {
  transform: translateY(4px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after {
  transform: translateY(-4px) rotate(-45deg);
}

/* =========================================================
   16. 页脚
   ========================================================= */
.site-foot {
  margin-top: clamp(40px, 6vw, 88px);
  color: var(--paper);
  background: var(--blue-deep);
  border-top: 2px solid var(--green);
}

.site-foot__top {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 9fr);
  gap: clamp(24px, 4vw, 64px);
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(28px, 4vw, 48px);
}

.site-foot__mark {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(24px, 3vw, 36px);
  line-height: 1.15;
  letter-spacing: -.02em;
}
.site-foot__role {
  display: inline-block;
  margin-top: 12px;
  padding: 4px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  color: var(--green-deep);
  background: var(--green-soft);
}
.site-foot__note {
  margin-top: 16px;
  max-width: 30ch;
  font-size: 13px;
  line-height: 1.8;
  color: rgba(246, 247, 244, .66);
}

.site-foot__cols {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(18px, 2.4vw, 40px);
}

.foot-col__title {
  padding-bottom: 10px;
  margin-bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: rgba(246, 247, 244, .58);
  border-bottom: 1px solid rgba(195, 203, 211, .3);
}
.foot-col__list li + li { margin-top: 8px; }
.foot-col__link {
  font-size: 15px;
  line-height: 1.5;
  color: rgba(246, 247, 244, .82);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast), border-color var(--t-fast);
}
.foot-col__link:hover {
  color: #fff;
  border-bottom-color: var(--orange);
}

.site-foot__bottom {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 18px 40px;
  padding-top: 22px;
  padding-bottom: 34px;
  font-size: 13px;
  line-height: 1.75;
  color: rgba(246, 247, 244, .72);
  border-top: 1px solid rgba(195, 203, 211, .28);
}

.site-foot__contact {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 22px;
}
.site-foot__contact > span {
  position: relative;
  padding-left: 20px;
}
.site-foot__contact > span::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 8px;
  height: 1px;
  background: var(--orange);
}
.site-foot__contact .num { color: #fff; }

.site-foot__service {
  margin-top: 10px;
  max-width: 60ch;
  font-size: 12.5px;
  color: rgba(246, 247, 244, .55);
}

.site-foot__legal {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.9;
  color: rgba(246, 247, 244, .6);
  white-space: nowrap;
}

/* =========================================================
   17. 响应式
   ========================================================= */
@media (max-width: 1180px) {
  .site-nav__link { font-size: 13px; padding: 11px 4px; }
  .bar-cta { padding: 8px 12px; font-size: 12px; }
}

@media (max-width: 1024px) {
  .grid--3-9,
  .grid--5-7,
  .grid--7-5 { grid-template-columns: minmax(0, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-foot__top { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 880px) {
  :root { --frame-h: 62px; }

  body { font-size: 16px; }

  .brand {
    gap: 7px;
    padding-left: 9px;
  }
  .brand__name {
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    padding-block: 0;
    font-size: 16px;
    letter-spacing: -.01em;
  }
  .brand__role {
    writing-mode: horizontal-tb;
    text-orientation: mixed;
    padding-block: 0;
    font-size: 10px;
    letter-spacing: .14em;
  }

  .bar-cta { display: none; }
  .nav-toggle { display: inline-flex; }

  .site-nav {
    position: fixed;
    top: var(--frame-h);
    left: 0;
    right: 0;
    margin-left: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--green);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--t-base);
  }
  .site-nav[data-open] {
    max-height: calc(100vh - var(--frame-h));
    overflow-y: auto;
  }
  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px var(--gutter) 18px;
  }
  .site-nav__item { display: block; }
  .site-nav__link {
    justify-content: space-between;
    padding: 14px 2px;
    font-size: 16px;
    border-bottom: 1px solid var(--silver);
  }
  .site-nav__link::after { display: none; }
  .site-nav__link[aria-current="page"] { color: var(--blue); }

  .site-foot__cols { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .site-foot__bottom {
    grid-template-columns: minmax(0, 1fr);
  }
  .site-foot__legal { white-space: normal; }
}

@media (max-width: 560px) {
  .grid--3 { grid-template-columns: minmax(0, 1fr); }
  .site-foot__cols { grid-template-columns: minmax(0, 1fr); }
  .site-foot__contact { flex-direction: column; gap: 8px; }
  .section-head__aside { margin-left: 0; }
}

/* ---------- 18. 减少动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *,
  *::before,
  *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
    scroll-behavior: auto !important;
  }
  .site-nav { transition: none; }
}