/* =========================================================
   LM体育 · 共享样式 /assets/site.css
   夜赛控制室：深墨蓝基底 + 荧光青 / 电光橙状态色
   非对称编辑部网格 · 大圆角与胶囊 · 等宽索引
   ========================================================= */

/* ---------- 变量 ---------- */
:root {
  --ink: #0B1220;
  --ink-2: #111C33;
  --line: #232C3D;
  --graphite: #3A4557;
  --paper: #F3EFE6;
  --mist: #A8B3C4;
  --cyan: #2DF5D0;
  --amber: #FF7A1A;
  --up: #00D68F;
  --down: #FF5A3C;
  --white: #F7FAFF;

  --cyan-soft: rgba(45, 245, 208, 0.12);
  --amber-soft: rgba(255, 122, 26, 0.14);
  --white-soft: rgba(247, 250, 255, 0.04);

  --font-head: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Noto Sans SC", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-body: var(--font-head);
  --font-num: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", "Courier New", monospace;

  --radius-lg: 28px;
  --radius-md: 18px;
  --radius-sm: 10px;
  --pill: 999px;

  --shell: 1240px;
  --gutter: clamp(1.1rem, 4vw, 2.5rem);
  --sect: clamp(3rem, 7vw, 6rem);
  --shadow-float: 0 26px 64px -34px rgba(0, 0, 0, 0.9);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background-color: var(--ink);
  background-image:
    radial-gradient(1100px 520px at 82% -12%, rgba(45, 245, 208, 0.08), transparent 62%),
    radial-gradient(900px 480px at 4% 0%, rgba(255, 122, 26, 0.06), transparent 58%);
  background-repeat: no-repeat;
  color: var(--white);
  font-family: var(--font-body);
  font-size: clamp(15.5px, 0.5vw + 14px, 17px);
  line-height: 1.75;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
h1, h2, h3, h4, h5, h6 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 800;
  line-height: 1.18;
  letter-spacing: -0.02em;
  color: var(--white);
  text-wrap: balance;
}
h1 { font-size: clamp(1.95rem, 5vw, 3.3rem); }
h2 { font-size: clamp(1.45rem, 3vw, 2.2rem); }
h3 { font-size: clamp(1.12rem, 1.8vw, 1.45rem); }
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%; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
table { border-collapse: collapse; width: 100%; }
hr { border: 0; }

/* ---------- 无障碍 ---------- */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 6px;
}
:focus:not(:focus-visible) { outline: none; }

.skip-link {
  position: absolute;
  left: 1rem;
  top: -120px;
  z-index: 300;
  padding: 0.62rem 1.05rem;
  border-radius: var(--pill);
  background: var(--cyan);
  color: #04140F;
  font-size: 0.84rem;
  font-weight: 700;
  transition: top 0.22s ease;
}
.skip-link:focus { top: 0.75rem; }

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

/* ---------- 骨架 ---------- */
.shell {
  width: calc(100% - var(--gutter) * 2);
  max-width: var(--shell);
  margin-inline: auto;
}
.section { padding-block: var(--sect); }
.section__head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.85rem 2rem;
  margin-bottom: clamp(1.4rem, 3vw, 2.4rem);
}
.section__title { font-size: clamp(1.45rem, 3vw, 2.2rem); }
.stack { display: flex; flex-direction: column; gap: 1rem; }
.rule { height: 1px; background: var(--line); border: 0; margin: 0; }

.grid { display: grid; gap: clamp(1rem, 2.2vw, 1.75rem); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(228px, 1fr)); }
.grid--aside { grid-template-columns: minmax(0, 1fr); }
@media (min-width: 900px) {
  .grid--aside {
    grid-template-columns: minmax(150px, 210px) minmax(0, 1fr);
    gap: clamp(1.5rem, 4vw, 3.5rem);
  }
}

/* ---------- 文本层级 ---------- */
.mono { font-family: var(--font-num); letter-spacing: 0.06em; }
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}
.eyebrow::before { content: ""; width: 22px; height: 1px; background: var(--cyan); }
.lede {
  max-width: 62ch;
  font-size: clamp(1rem, 1.3vw, 1.1rem);
  line-height: 1.8;
  color: var(--mist);
}

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--pill);
  font-family: var(--font-head);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--cyan); border-color: var(--cyan); color: #04140F; }
.btn--primary:hover { background: #62ffe2; border-color: #62ffe2; }
.btn--ghost { background: transparent; border-color: var(--line); color: var(--white); }
.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }
.btn--amber { background: var(--amber); border-color: var(--amber); color: #1A0C02; }
.btn--amber:hover { background: #ff9445; border-color: #ff9445; }
.btn--sm { padding: 0.55rem 0.95rem; font-size: 0.78rem; }

/* ---------- 状态胶囊 ---------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.72rem;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: var(--white-soft);
  color: var(--mist);
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  line-height: 1;
}
.chip--up { color: var(--up); border-color: rgba(0, 214, 143, 0.45); background: rgba(0, 214, 143, 0.1); }
.chip--down { color: var(--down); border-color: rgba(255, 90, 60, 0.45); background: rgba(255, 90, 60, 0.1); }
.chip--live { color: var(--cyan); border-color: rgba(45, 245, 208, 0.45); background: var(--cyan-soft); }

/* ---------- 卡片与纸面 ---------- */
.card {
  position: relative;
  padding: clamp(1.1rem, 2.4vw, 1.6rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-2);
  transition: border-color 0.22s ease, transform 0.22s ease;
}
.card:hover { border-color: rgba(45, 245, 208, 0.45); transform: translateY(-2px); }
.card__kicker {
  display: block;
  margin-bottom: 0.5rem;
  font-family: var(--font-num);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--mist);
}
.card__title { margin-bottom: 0.4rem; font-size: 1.05rem; font-weight: 700; letter-spacing: -0.01em; }
.card__text { font-size: 0.92rem; line-height: 1.75; color: var(--mist); }

.paper {
  padding: clamp(1.35rem, 3.4vw, 2.6rem);
  border-radius: var(--radius-lg);
  background: var(--paper);
  color: #101826;
}
.paper h2, .paper h3, .paper h4 { color: #101826; }
.paper p { color: #2C3646; }
.paper a { border-bottom: 1px solid rgba(16, 24, 38, 0.32); }
.paper a:hover { border-color: var(--amber); color: #8A3C00; }

/* ---------- 面包屑 ---------- */
.breadcrumb { padding-top: 1rem; }
.breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-num);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}
.breadcrumb__item { display: inline-flex; align-items: center; gap: 0.5rem; }
.breadcrumb__item + .breadcrumb__item::before { content: "/"; color: var(--graphite); }
.breadcrumb__link { color: var(--mist); border-bottom: 1px solid transparent; }
.breadcrumb__link:hover { color: var(--cyan); border-color: var(--cyan); }
.breadcrumb__current { color: var(--white); }

/* ---------- 图片容器 ---------- */
.media-frame {
  position: relative;
  display: block;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background-color: var(--ink-2);
  background-image:
    linear-gradient(160deg, rgba(45, 245, 208, 0.10), transparent 58%),
    linear-gradient(0deg, rgba(11, 18, 32, 0.9), rgba(17, 28, 51, 0.6));
}
.media-frame > img,
.media-frame > picture > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--square { aspect-ratio: 1 / 1; }
.media-frame--tall { aspect-ratio: 3 / 4; }
.media-frame--tactical { aspect-ratio: 4 / 3; }
.figure { margin: 0; }
.figure__caption {
  margin-top: 0.7rem;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 滚动显现协议 ---------- */
html[data-motion="on"] [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s ease, transform 0.55s cubic-bezier(0.22, 0.61, 0.36, 1);
}
html[data-motion="on"] [data-reveal].is-visible { opacity: 1; transform: none; }

/* =========================================================
   页头
   ========================================================= */
.site-header {
  position: relative;
  z-index: 60;
  background: var(--ink);
}
.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  z-index: 200;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan), var(--amber));
  pointer-events: none;
}

/* 上层：品牌 + 工具链接 */
.header-top {
  border-bottom: 1px solid var(--line);
  background: var(--ink);
}
.header-top__inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 56px;
  padding-block: 0.4rem;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  flex: 0 0 auto;
}
.brand__mark {
  width: 34px;
  height: 34px;
  border-radius: 12px;
  background:
    linear-gradient(135deg, var(--cyan) 0 42%, rgba(45, 245, 208, 0) 42%),
    linear-gradient(315deg, var(--amber) 0 30%, rgba(255, 122, 26, 0) 30%),
    var(--ink-2);
  border: 1px solid var(--line);
  box-shadow: inset 0 0 0 4px rgba(11, 18, 32, 0.85);
}
.brand__text { display: flex; flex-direction: column; line-height: 1.15; }
.brand__name {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--white);
}
.brand__desc {
  margin-top: 0.15rem;
  font-family: var(--font-num);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}
.utility {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-left: auto;
}
.utility__list { display: flex; align-items: center; gap: 1rem; }
.utility__link {
  padding: 0.25rem 0;
  border-bottom: 1px solid transparent;
  font-size: 0.8rem;
  color: var(--mist);
  transition: color 0.2s ease, border-color 0.2s ease;
}
.utility__link:hover { color: var(--cyan); border-color: var(--cyan); }

/* 菜单按钮 */
.nav-toggle {
  display: none;
  align-items: center;
  gap: 0.6rem;
  margin-left: auto;
  padding: 0.5rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 700;
}
.nav-toggle:hover { border-color: var(--cyan); color: var(--cyan); }
.nav-toggle__bars {
  position: relative;
  display: block;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 16px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: transform 0.22s ease, top 0.22s ease, background-color 0.22s ease;
}
.nav-toggle__bars::before { top: -5px; }
.nav-toggle__bars::after { top: 5px; }
.site-header[data-open] .nav-toggle__bars { background: transparent; }
.site-header[data-open] .nav-toggle__bars::before { top: 0; background: var(--cyan); transform: rotate(45deg); }
.site-header[data-open] .nav-toggle__bars::after { top: 0; background: var(--cyan); transform: rotate(-45deg); }

/* 下层：主导航 */
.header-main {
  position: relative;
  overflow: hidden;
  background: var(--ink-2);
  border-bottom: 1px solid var(--line);
}
.header-main::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 60%;
  width: 44%;
  background: linear-gradient(105deg, rgba(45, 245, 208, 0.13), rgba(45, 245, 208, 0) 68%);
  transform: skewX(-14deg);
  transform-origin: left center;
  pointer-events: none;
}
.header-main__inner {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  min-height: 60px;
}
.primary-nav { min-width: 0; }
.primary-nav__panel { max-height: none; overflow: visible; }
.primary-nav__list { display: flex; flex-wrap: wrap; align-items: center; gap: 0.15rem; }
.primary-nav__link {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.85rem 0.85rem;
  border-radius: var(--radius-sm);
  color: var(--mist);
  font-size: 0.95rem;
  font-weight: 600;
  transition: color 0.2s ease, background-color 0.2s ease;
}
.primary-nav__link:hover { color: var(--white); background: rgba(45, 245, 208, 0.07); }
.primary-nav__link[aria-current="page"] { color: var(--white); }
.primary-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0.85rem;
  right: 0.85rem;
  bottom: 0.35rem;
  height: 2px;
  border-radius: 2px;
  background: var(--cyan);
}
.primary-nav__idx {
  font-family: var(--font-num);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  color: var(--graphite);
  transition: color 0.2s ease;
}
.primary-nav__link[aria-current="page"] .primary-nav__idx { color: var(--cyan); }

.header-note {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: auto;
  padding: 0.42rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.14em;
  color: var(--mist);
  white-space: nowrap;
}
.header-note__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 3px rgba(45, 245, 208, 0.16);
}

@media (max-width: 1180px) {
  .header-note { display: none; }
}

@media (max-width: 900px) {
  .utility__list { display: none; }
  .nav-toggle { display: inline-flex; }
  .header-main::before { display: none; }
  .header-main__inner {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: 0.25rem;
  }
  .primary-nav { width: 100%; }
  .primary-nav__panel {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.34s cubic-bezier(0.4, 0, 0.2, 1);
  }
  .site-header[data-open] .primary-nav__panel {
    max-height: min(78vh, 540px);
    overflow-y: auto;
  }
  .primary-nav__list { flex-direction: column; align-items: stretch; padding-block: 0.35rem; }
  .primary-nav__link {
    justify-content: flex-start;
    padding: 0.9rem 0.2rem;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }
  .primary-nav__link:hover { background: transparent; }
  .primary-nav__link[aria-current="page"] { color: var(--cyan); }
  .primary-nav__link[aria-current="page"]::after {
    left: 0.2rem;
    right: auto;
    width: 28px;
    bottom: 0.55rem;
  }
  .header-note { align-self: flex-start; margin: 0 0 0.9rem; }
}

@media (max-width: 640px) {
  .utility { display: none; }
  .brand__desc { display: none; }
  .header-top__inner { min-height: 52px; }
}

/* =========================================================
   页脚
   ========================================================= */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 8vw, 6rem);
  padding-top: clamp(2.4rem, 6vw, 4.2rem);
  background: var(--ink);
  border-top: 1px solid var(--line);
}
.site-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--cyan), rgba(255, 122, 26, 0.7), transparent);
  opacity: 0.65;
}
.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.3fr;
  gap: clamp(1.75rem, 4vw, 3rem);
  padding-bottom: clamp(2rem, 5vw, 3.2rem);
}
.footer__brand { min-width: 0; }
.footer__logo {
  font-family: var(--font-head);
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--white);
}
.footer__blurb {
  max-width: 34ch;
  margin-top: 0.7rem;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--mist);
}
.footer__cta { margin-top: 1.1rem; }
.footer__col { min-width: 0; }
.footer__col-title {
  margin-bottom: 1rem;
  font-family: var(--font-num);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan);
}
.footer__list { display: flex; flex-direction: column; gap: 0.6rem; }
.footer__link {
  display: inline-block;
  font-size: 0.92rem;
  color: var(--mist);
  border-bottom: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}
.footer__link:hover { color: var(--white); border-color: var(--cyan); }
.footer__contact { display: flex; flex-direction: column; gap: 0.85rem; }
.footer__contact-item { display: flex; flex-direction: column; gap: 0.2rem; }
.footer__label {
  font-family: var(--font-num);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--graphite);
}
.footer__value {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--mist);
  word-break: break-word;
}
.footer__legal {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem 1.5rem;
  padding-block: 1.15rem 2rem;
  border-top: 1px solid var(--line);
}
.footer__legal-line {
  font-family: var(--font-num);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--graphite);
}

@media (max-width: 1024px) {
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 620px) {
  .footer__grid { grid-template-columns: 1fr; }
  .footer__legal { flex-direction: column; align-items: flex-start; }
}

/* =========================================================
   降级动效
   ========================================================= */
@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[data-motion="on"] [data-reveal] {
    opacity: 1 !important;
    transform: none !important;
  }
  .card:hover { transform: none; }
  .btn:active { transform: none; }
}