/* ==========================================================================
   微玩体育 · 共享站点样式 /assets/site.css
   母题：赛场深夜的战术室 —— 细网格、刻度框、等宽读数、克制高亮
   ========================================================================== */

:root {
  --c-base: #0B1410;
  --c-panel: #0F2A22;
  --c-seam: #1B3B30;
  --c-rock: #8C9A93;
  --c-ink: #EDE8DB;
  --c-cyan: #35E0D0;
  --c-orange: #FF8A3D;
  --c-blue-a: #3E6BD8;
  --c-blue-b: #7FB2FF;
  --c-hot: #E4572E;
  --c-amber: #F2B441;
  --c-clay: #C96F4A;

  --line: 1px solid rgba(140, 154, 147, 0.32);
  --line-strong: 1px solid rgba(140, 154, 147, 0.6);
  --grid-gap: clamp(10px, 1.4vw, 20px);
  --shell: 1280px;
  --shell-wide: 1560px;
  --pad-x: clamp(16px, 4vw, 56px);

  --font-head: "Archivo Narrow", "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", sans-serif;
  --font-num: "JetBrains Mono", "Sarasa Mono SC", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --font-body: "Noto Sans SC", "Source Han Sans SC", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;

  --step-h1: clamp(34px, 5.4vw, 62px);
  --step-h2: clamp(24px, 2.6vw, 38px);
  --step-h3: clamp(18px, 1.5vw, 22px);
  --step-body: clamp(15px, 1.05vw, 17px);
  --step-note: clamp(11px, 0.85vw, 13px);
  --step-num: clamp(56px, 8vw, 148px);

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
}

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

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

body {
  margin: 0;
  background: var(--c-base);
  background-image:
    linear-gradient(to right, rgba(140, 154, 147, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(140, 154, 147, 0.07) 1px, transparent 1px);
  background-size: 96px 96px;
  color: var(--c-ink);
  font-family: var(--font-body);
  font-size: var(--step-body);
  line-height: 1.75;
  letter-spacing: 0.01em;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  padding-top: 0;
}

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.16;
  margin: 0 0 0.5em;
}
h1 { font-size: var(--step-h1); }
h2 { font-size: var(--step-h2); }
h3 { font-size: var(--step-h3); font-weight: 600; }

p { margin: 0 0 1em; }
ul, ol { margin: 0 0 1em; padding-left: 1.2em; }
li { margin-bottom: 0.35em; }

a { color: var(--c-cyan); text-decoration: none; border-bottom: 1px solid rgba(53, 224, 208, 0.28); }
a:hover { border-bottom-color: var(--c-cyan); }

img { max-width: 100%; height: auto; display: block; }
button { font: inherit; color: inherit; }

:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 3px;
  border-radius: 0;
}

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

/* ---------- 跳过链接 ---------- */
.skip-link {
  position: absolute;
  left: var(--pad-x);
  top: -100px;
  z-index: 200;
  background: var(--c-cyan);
  color: var(--c-base);
  border: 0;
  padding: 10px 18px;
  font-family: var(--font-head);
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: top 0.18s var(--ease);
}
.skip-link:focus { top: 10px; border: 0; }

/* ---------- 外壳 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad-x);
}
.shell--wide { max-width: var(--shell-wide); }

.section { padding-block: clamp(44px, 6vw, 96px); position: relative; }
.section--seam { background: var(--c-seam); }
.section--panel { background: var(--c-panel); }
.section__rule {
  height: 1px;
  background: rgba(140, 154, 147, 0.3);
  border: 0;
  margin: 0;
}
.section__eyebrow {
  font-family: var(--font-num);
  font-size: var(--step-note);
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-rock);
  margin-bottom: 10px;
}

/* ---------- 头部 ---------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 120;
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background 0.28s var(--ease), border-color 0.28s var(--ease), box-shadow 0.28s var(--ease);
}
.site-header.is-solid {
  background: rgba(15, 42, 34, 0.97);
  border-bottom-color: rgba(140, 154, 147, 0.32);
  box-shadow: 0 18px 40px -32px rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(6px);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.2vw, 34px);
  min-height: 68px;
  padding-block: 10px;
}

.readout {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 2px;
  background: rgba(140, 154, 147, 0.18);
  overflow: hidden;
}
.readout__bar {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--c-cyan), var(--c-orange));
  transition: width 0.12s linear;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  border: 0;
  color: var(--c-ink);
  flex: 0 0 auto;
}
.brand:hover { border: 0; }
.brand__mark {
  width: 26px; height: 26px;
  flex: 0 0 auto;
  border: var(--line-strong);
  background:
    linear-gradient(to right, var(--c-cyan) 0 2px, transparent 2px) 0 0 / 100% 100%,
    linear-gradient(to bottom, var(--c-orange) 0 2px, transparent 2px) 100% 100% / 100% 100%,
    var(--c-panel);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.2; }
.brand__text strong {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.06em;
}
.brand__sub {
  font-family: var(--font-num);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  color: var(--c-rock);
  text-transform: uppercase;
}

.nav { margin-inline-start: auto; }
.nav__list {
  display: flex;
  align-items: center;
  gap: clamp(4px, 1.4vw, 22px);
  list-style: none;
  margin: 0;
  padding: 0;
}
.nav__list li { margin: 0; }
.nav__link {
  display: block;
  padding: 10px 4px;
  border: 0;
  border-bottom: 1px solid transparent;
  color: rgba(237, 232, 219, 0.8);
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 600;
  letter-spacing: 0.06em;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.nav__link:hover { color: var(--c-ink); border-bottom-color: rgba(53, 224, 208, 0.6); }
.nav__link[aria-current="page"] {
  color: var(--c-cyan);
  border-bottom-color: var(--c-cyan);
}

.site-header__side {
  display: flex;
  align-items: center;
  gap: clamp(8px, 1.2vw, 18px);
}

/* ---------- 维度切换器 ---------- */
.switch { border: var(--line); background: rgba(11, 20, 16, 0.55); }
.switch__list { display: flex; list-style: none; margin: 0; padding: 0; }
.switch__list li { margin: 0; }
.switch__item {
  display: block;
  background: transparent;
  border: 0;
  border-right: var(--line);
  padding: 8px 13px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--c-rock);
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}
.switch__list li:last-child .switch__item { border-right: 0; }
.switch__item:hover { color: var(--c-ink); background: rgba(140, 154, 147, 0.12); }
.switch__item[aria-pressed="true"] {
  color: var(--c-base);
  background: var(--c-cyan);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid transparent;
  padding: 11px 20px;
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: background 0.2s var(--ease), color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.btn--primary { background: var(--c-orange); color: #17200F; border-color: var(--c-orange); }
.btn--primary:hover { background: #FFA463; border-color: #FFA463; }
.btn--ghost { background: transparent; color: var(--c-cyan); border-color: rgba(53, 224, 208, 0.55); }
.btn--ghost:hover { background: rgba(53, 224, 208, 0.14); }
.btn:focus-visible { outline-offset: 3px; }

/* ---------- 汉堡按钮 ---------- */
.nav__toggle {
  display: none;
  width: 42px; height: 38px;
  background: transparent;
  border: var(--line-strong);
  padding: 0;
  cursor: pointer;
  position: relative;
}
.nav__toggle-bars,
.nav__toggle-bars::before,
.nav__toggle-bars::after {
  position: absolute;
  left: 50%; top: 50%;
  width: 18px; height: 1.5px;
  background: var(--c-ink);
  transform: translate(-50%, -50%);
  transition: transform 0.22s var(--ease), opacity 0.22s var(--ease);
}
.nav__toggle-bars::before { content: ""; top: -6px; }
.nav__toggle-bars::after { content: ""; top: 6px; }
.site-header[data-open] .nav__toggle-bars { background: transparent; }
.site-header[data-open] .nav__toggle-bars::before { transform: translate(-50%, -50%) rotate(45deg); top: 0; }
.site-header[data-open] .nav__toggle-bars::after { transform: translate(-50%, -50%) rotate(-45deg); top: 0; }

/* ---------- 面包屑 ---------- */
.breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  font-family: var(--font-num);
  font-size: var(--step-note);
  letter-spacing: 0.1em;
  color: var(--c-rock);
}
.breadcrumbs__item { margin: 0; }
.breadcrumbs__item + .breadcrumbs__item::before {
  content: "/";
  margin-right: 8px;
  color: rgba(140, 154, 147, 0.55);
}
.breadcrumbs__item a { color: var(--c-rock); border-bottom-color: transparent; }
.breadcrumbs__item a:hover { color: var(--c-cyan); border-bottom-color: var(--c-cyan); }
.breadcrumbs__item[aria-current="page"] { color: var(--c-ink); }

/* ---------- 正文容器 ---------- */
.prose { max-width: 68ch; }
.prose h2 { margin-top: 1.8em; }
.prose h2:first-child { margin-top: 0; }
.prose h3 { color: var(--c-cyan); margin-top: 1.6em; }
.prose ul { list-style: none; padding-left: 0; }
.prose ul li {
  position: relative;
  padding-left: 20px;
  border-bottom: 1px solid rgba(140, 154, 147, 0.16);
  padding-bottom: 8px;
  margin-bottom: 8px;
}
.prose ul li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.72em;
  width: 9px; height: 1px;
  background: var(--c-cyan);
}
.prose blockquote {
  margin: 1.6em 0;
  padding: 4px 0 4px 18px;
  border-left: 2px solid var(--c-orange);
  color: rgba(237, 232, 219, 0.86);
}

/* ---------- 网格与 Bento 面板 ---------- */
.grid {
  display: grid;
  gap: var(--grid-gap);
  grid-template-columns: repeat(12, 1fr);
}
.grid--bento { grid-auto-rows: minmax(96px, auto); }

.panel {
  position: relative;
  background: var(--c-panel);
  border: var(--line);
  padding: clamp(16px, 1.8vw, 28px);
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.panel--seam { background: var(--c-seam); }
.panel--plain { background: transparent; border-color: transparent; padding-inline: 0; }
.panel--tall { grid-row: span 2; }
.panel__head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.panel__head h2, .panel__head h3 { margin: 0; }
.panel__body { flex: 1 1 auto; }
.panel__foot {
  border-top: var(--line);
  padding-top: 10px;
  margin-top: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

/* ---------- 刻度装饰 ---------- */
.tick { display: block; background-image: repeating-linear-gradient(90deg, var(--c-rock) 0 1px, transparent 1px 8px); }
.tick--h { height: 8px; width: 96px; opacity: 0.7; }
.tick--v {
  width: 8px;
  height: 96px;
  background-image: repeating-linear-gradient(180deg, var(--c-rock) 0 1px, transparent 1px 8px);
  opacity: 0.6;
}

/* ---------- 数据块 ---------- */
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat__value {
  font-family: var(--font-num);
  font-size: var(--step-num);
  font-weight: 700;
  line-height: 0.92;
  letter-spacing: -0.03em;
  color: var(--c-orange);
  font-variant-numeric: tabular-nums;
}
.stat__value--cyan { color: var(--c-cyan); }
.stat__value--cool {
  background: linear-gradient(96deg, var(--c-blue-b), var(--c-blue-a));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.stat__value--hot { color: var(--c-hot); }
.stat__value--amber { color: var(--c-amber); }
.stat__label {
  font-family: var(--font-head);
  font-size: var(--step-h3);
  font-weight: 600;
}
.stat__note { font-family: var(--font-num); font-size: var(--step-note); color: var(--c-rock); }

/* ---------- 折叠层 ---------- */
.fold { border-top: var(--line); }
.fold__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 0;
  cursor: pointer;
  font-family: var(--font-head);
  font-size: var(--step-h3);
  font-weight: 600;
  list-style: none;
}
.fold__summary::-webkit-details-marker { display: none; }
.fold__summary::after {
  content: "+";
  font-family: var(--font-num);
  color: var(--c-cyan);
  font-size: 18px;
}
.fold[open] .fold__summary::after { content: "−"; }
.fold__body { padding: 0 0 16px; color: rgba(237, 232, 219, 0.84); }

/* ---------- 注释小字 ---------- */
.meta {
  font-family: var(--font-num);
  font-size: var(--step-note);
  letter-spacing: 0.05em;
  color: var(--c-rock);
}
.meta--edge { display: block; text-align: right; }

/* ---------- 图片容器基础规则 ---------- */
.media {
  position: relative;
  overflow: hidden;
  background: linear-gradient(150deg, #123328, #0A1511 70%);
  border: var(--line);
  aspect-ratio: 16 / 9;
}
.media--wide { aspect-ratio: 21 / 9; }
.media--square { aspect-ratio: 1 / 1; }
.media--portrait { aspect-ratio: 3 / 4; }
.media > img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(0.68) contrast(1.06) brightness(0.92);
}
.media__grid-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(53, 224, 208, 0.16) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(53, 224, 208, 0.1) 1px, transparent 1px);
  background-size: 25% 25%;
  mix-blend-mode: screen;
}
.media__caption {
  position: absolute;
  left: 10px; bottom: 8px;
  font-family: var(--font-num);
  font-size: var(--step-note);
  color: rgba(237, 232, 219, 0.82);
}

/* ---------- 返回顶部 ---------- */
[data-top] {
  position: fixed;
  right: clamp(14px, 2vw, 30px);
  bottom: clamp(14px, 2vw, 30px);
  z-index: 110;
  width: 44px; height: 44px;
  background: var(--c-panel);
  border: var(--line-strong);
  color: var(--c-cyan);
  font-family: var(--font-num);
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.22s var(--ease), visibility 0.22s var(--ease), background 0.22s var(--ease);
}
[data-top].is-visible { opacity: 1; visibility: visible; }
[data-top]:hover { background: var(--c-seam); }

/* ---------- 显现动效 ---------- */
[data-reveal] { opacity: 0; transform: translateY(14px); transition: opacity 0.5s var(--ease), transform 0.5s var(--ease); }
[data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- 页脚 ---------- */
.site-footer {
  margin-top: clamp(40px, 6vw, 90px);
  background: var(--c-panel);
  border-top: var(--line-strong);
}
.footer__board {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1.35fr;
  gap: clamp(18px, 2.2vw, 40px);
  padding-block: clamp(36px, 4.4vw, 72px) clamp(24px, 3vw, 42px);
}
.footer__brand { display: flex; flex-direction: column; gap: 10px; }
.footer__brand-name {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: 0.08em;
  margin: 0;
}
.footer__brand-sub { color: rgba(237, 232, 219, 0.72); font-size: 14px; margin: 0; max-width: 32ch; }
.footer__signature {
  font-family: var(--font-num);
  font-size: var(--step-note);
  letter-spacing: 0.14em;
  color: var(--c-cyan);
  margin: 0;
}
.footer__col-title {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-rock);
  margin: 0 0 12px;
}
.footer__links { list-style: none; margin: 0; padding: 0; }
.footer__links li { margin-bottom: 8px; }
.footer__links a,
.footer__contact-list a {
  color: var(--c-ink);
  border-bottom-color: rgba(140, 154, 147, 0.4);
  font-size: 14.5px;
}
.footer__links a:hover,
.footer__contact-list a:hover { color: var(--c-cyan); border-bottom-color: var(--c-cyan); }
.footer__contact-list { list-style: none; margin: 0 0 8px; padding: 0; }
.footer__contact-list li { display: flex; gap: 10px; font-size: 14.5px; margin-bottom: 8px; flex-wrap: wrap; }
.footer__label {
  font-family: var(--font-num);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--c-rock);
  min-width: 34px;
  padding-top: 2px;
}
.footer__legal {
  border-top: var(--line);
  padding-block: 16px 26px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 20px;
}
.footer__legal-line { margin: 0; font-size: 13px; color: var(--c-rock); }
.footer__legal-line a { color: var(--c-rock); border-bottom-color: transparent; }
.footer__legal-line a:hover { color: var(--c-cyan); border-bottom-color: var(--c-cyan); }

/* ---------- 平板 ---------- */
@media (max-width: 1100px) {
  .nav__list { gap: 10px; }
  .nav__link { font-size: 14px; }
  .switch { display: none; }
  .footer__board { grid-template-columns: 1.4fr 1fr 1fr; }
  .footer__contact { grid-column: span 3; }
}

@media (max-width: 900px) {
  .nav__toggle { display: block; }
  .nav {
    position: absolute;
    left: 0; right: 0;
    top: 100%;
    margin: 0;
    background: var(--c-panel);
    border-top: var(--line);
    border-bottom: var(--line-strong);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s var(--ease);
  }
  .site-header[data-open] .nav { max-height: 78vh; overflow-y: auto; }
  .nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0;
  }
  .nav__link {
    padding: 14px var(--pad-x);
    border-bottom: var(--line);
    font-size: 16px;
  }
  .site-header[data-open] .site-header__inner { background: var(--c-panel); }
  .grid { grid-template-columns: repeat(6, 1fr); }
  .panel--tall { grid-row: span 1; }
}

/* ---------- 手机 ---------- */
@media (max-width: 640px) {
  .brand__sub { display: none; }
  .site-header__cta { display: none; }
  .site-header__inner { min-height: 62px; gap: 10px; }
  .footer__board { grid-template-columns: 1fr; gap: 26px; }
  .footer__contact { grid-column: span 1; }
  .meta--edge { text-align: left; }
  .grid { grid-template-columns: repeat(2, 1fr); }
  .stat__value { font-size: clamp(44px, 13vw, 72px); }
}

/* ---------- 无障碍与偏好 ---------- */
@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;
  }
  [data-reveal] { opacity: 1; transform: none; }
  .readout__bar { transition: none; }
}