/* 光速体育 · 站点共享样式 /assets/site.css */

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

:root {
  --ls-void: #05070E;
  --ls-track: #0B1424;
  --ls-cream: #F3EDE2;
  --ls-slate: #96A0A6;
  --ls-moss: #4F6B58;
  --ls-clay: #C4693F;
  --ls-cyan: #35E6DA;
  --ls-volt: #FFD24A;
  --ls-magenta: #E4577F;

  --ls-line: rgba(150, 160, 166, .18);
  --ls-line-strong: rgba(150, 160, 166, .34);
  --ls-ink: #04201F;

  --ls-font-sans: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", "Noto Sans SC", "Source Han Sans SC", system-ui, -apple-system, sans-serif;
  --ls-font-mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, "Courier New", monospace;

  --ls-rail-w: 17.5rem;
  --ls-bar-h: 4.25rem;
  --ls-wrap-x: clamp(1.25rem, 4vw, 2.75rem);
  --ls-maxw: 78rem;

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

  --ls-ease: cubic-bezier(.22, .61, .36, 1);
  --ls-dur: .2s;
}

html {
  -webkit-text-size-adjust: 100%;
  color-scheme: dark;
  scroll-padding-top: calc(var(--ls-bar-h) + 1rem);
}
@media (min-width: 1024px) { html { scroll-padding-top: 1.5rem; } }
@media (prefers-reduced-motion: no-preference) { html { scroll-behavior: smooth; } }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--ls-void);
  color: var(--ls-cream);
  font-family: var(--ls-font-sans);
  font-size: 1rem;
  line-height: 1.75;
  letter-spacing: .006em;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { margin: 0; line-height: 1.2; letter-spacing: -.01em; font-weight: 800; }
img, svg, video { max-width: 100%; }
ul, ol { margin: 0; }
a { color: var(--ls-cyan); }
button { font: inherit; }

::selection { background: var(--ls-cyan); color: var(--ls-ink); }

a:focus-visible,
button:focus-visible,
summary:focus-visible,
[tabindex]:focus-visible {
  outline: 2px solid var(--ls-cyan);
  outline-offset: 2px;
  box-shadow: 0 0 0 4px rgba(5, 7, 14, .92);
  border-radius: 6px;
}
#main-content:focus,
#main-content:focus-visible { outline: none; box-shadow: none; }

/* ---------- 跳转链接 ---------- */
.ls-skip {
  position: fixed;
  top: .75rem;
  left: .75rem;
  z-index: 200;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: .6rem 1.15rem;
  border-radius: var(--ls-pill);
  background: var(--ls-cyan);
  color: var(--ls-ink);
  font-size: .875rem;
  font-weight: 700;
  text-decoration: none;
  transform: translateY(calc(-100% - 1.5rem));
  transition: transform var(--ls-dur) var(--ls-ease);
}
.ls-skip:focus,
.ls-skip:focus-visible { transform: translateY(0); }

/* ---------- 页头外壳 ---------- */
.ls-header {
  position: fixed;
  z-index: 80;
  top: 0;
  left: 0;
  right: 0;
  height: var(--ls-bar-h);
  background: linear-gradient(180deg, #070C17 0%, #05070E 100%);
  border-bottom: 1px solid var(--ls-line);
}
.ls-header__rail {
  display: flex;
  align-items: center;
  gap: .75rem;
  height: 100%;
  padding-inline: 1rem;
}

/* ---------- 品牌 ---------- */
.ls-brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  min-height: 44px;
  color: var(--ls-cream);
  text-decoration: none;
}
.ls-brand__mark {
  position: relative;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 14px;
  background: linear-gradient(135deg, var(--ls-cyan) 0%, #1B9C96 58%, #0A3D44 100%);
  box-shadow: 0 0 0 1px rgba(53, 230, 218, .42), 0 10px 26px -16px var(--ls-cyan);
}
.ls-brand__spark {
  position: relative;
  width: 1.15rem;
  height: 2px;
  border-radius: 2px;
  background: var(--ls-void);
}
.ls-brand__spark::before,
.ls-brand__spark::after {
  content: "";
  position: absolute;
  left: 0;
  height: 2px;
  border-radius: 2px;
  background: rgba(5, 7, 14, .78);
}
.ls-brand__spark::before { top: -4px; width: 72%; }
.ls-brand__spark::after { top: 4px; width: 46%; }
.ls-brand__words { display: flex; flex-direction: column; line-height: 1.15; }
.ls-brand__name { font-size: 1.0625rem; font-weight: 800; letter-spacing: .01em; }
.ls-brand__line {
  font-family: var(--ls-font-mono);
  font-size: .625rem;
  letter-spacing: .14em;
  color: var(--ls-slate);
  white-space: nowrap;
}

/* ---------- 抽屉按钮 ---------- */
.ls-burger {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  min-height: 44px;
  padding: .5rem .95rem .5rem 1.05rem;
  border: 1px solid var(--ls-line-strong);
  border-radius: var(--ls-pill);
  background: rgba(11, 20, 36, .9);
  color: var(--ls-cream);
  font-size: .8125rem;
  letter-spacing: .08em;
  cursor: pointer;
  transition: border-color var(--ls-dur) var(--ls-ease), color var(--ls-dur) var(--ls-ease);
}
.ls-burger:hover { border-color: rgba(53, 230, 218, .6); color: var(--ls-cyan); }
.ls-burger__rail { display: inline-flex; flex-direction: column; justify-content: center; gap: 4px; width: 1.1rem; }
.ls-burger__rail span {
  display: block;
  height: 2px;
  border-radius: 2px;
  background: var(--ls-cream);
  transition: transform var(--ls-dur) var(--ls-ease), opacity var(--ls-dur) var(--ls-ease), background-color var(--ls-dur) var(--ls-ease);
}
.ls-burger__rail span:nth-child(1) { width: 100%; }
.ls-burger__rail span:nth-child(2) { width: 64%; background: var(--ls-cyan); }
.ls-burger__rail span:nth-child(3) { width: 100%; }
.ls-burger[aria-expanded="true"] { border-color: var(--ls-cyan); color: var(--ls-cyan); }
.ls-burger[aria-expanded="true"] .ls-burger__rail span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.ls-burger[aria-expanded="true"] .ls-burger__rail span:nth-child(2) { opacity: 0; }
.ls-burger[aria-expanded="true"] .ls-burger__rail span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.ls-burger__text { white-space: nowrap; }

/* ---------- 导航（移动端抽屉） ---------- */
.ls-nav {
  position: fixed;
  inset: 0 0 0 auto;
  z-index: 70;
  width: min(21rem, 88vw);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: calc(var(--ls-bar-h) + 1.25rem) 1.5rem 2rem;
  background: linear-gradient(180deg, #0A1220 0%, #05070E 100%);
  border-left: 1px solid rgba(53, 230, 218, .22);
  overflow-y: auto;
  overscroll-behavior: contain;
  transform: translateX(102%);
  pointer-events: none;
  transition: transform .26s var(--ls-ease);
}
.ls-header[data-open] .ls-nav { transform: translateX(0); pointer-events: auto; }

.ls-nav__caption {
  margin: 0;
  font-family: var(--ls-font-mono);
  font-size: .6875rem;
  letter-spacing: .2em;
  color: var(--ls-slate);
  text-transform: uppercase;
}
.ls-nav__list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: .3rem; }
.ls-nav__link {
  display: flex;
  align-items: center;
  gap: .8rem;
  min-height: 48px;
  padding: .55rem .95rem;
  border-radius: var(--ls-pill);
  color: var(--ls-slate);
  font-size: 1rem;
  text-decoration: none;
  transition: color var(--ls-dur) var(--ls-ease), background-color var(--ls-dur) var(--ls-ease), box-shadow var(--ls-dur) var(--ls-ease);
}
.ls-nav__idx {
  font-family: var(--ls-font-mono);
  font-size: .6875rem;
  letter-spacing: .06em;
  color: rgba(150, 160, 166, .7);
  transition: color var(--ls-dur) var(--ls-ease);
}
.ls-nav__label { letter-spacing: .02em; }
.ls-nav__link:hover { color: var(--ls-cream); background: rgba(53, 230, 218, .09); }
.ls-nav__link:hover .ls-nav__idx { color: var(--ls-cyan); }
.ls-nav__link[aria-current="page"] {
  background: var(--ls-cyan);
  color: var(--ls-ink);
  font-weight: 700;
  box-shadow: 0 10px 28px -16px var(--ls-cyan);
}
.ls-nav__link[aria-current="page"] .ls-nav__idx { color: rgba(4, 32, 31, .6); }

.ls-nav__actions {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--ls-line);
}
.ls-nav__hint {
  margin: .35rem 0 0;
  font-family: var(--ls-font-mono);
  font-size: .6875rem;
  letter-spacing: .1em;
  color: var(--ls-slate);
}

/* ---------- 按钮 ---------- */
.ls-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .5rem;
  min-height: 46px;
  padding: .7rem 1.3rem;
  border: 1px solid transparent;
  border-radius: var(--ls-pill);
  font-family: var(--ls-font-sans);
  font-size: .875rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--ls-dur) var(--ls-ease), color var(--ls-dur) var(--ls-ease),
              border-color var(--ls-dur) var(--ls-ease), box-shadow var(--ls-dur) var(--ls-ease),
              transform var(--ls-dur) var(--ls-ease);
}
.ls-btn--beam {
  background: var(--ls-cyan);
  color: var(--ls-ink);
  box-shadow: 0 12px 32px -18px var(--ls-cyan);
}
.ls-btn--beam:hover { background: #62F0E7; transform: translateY(-1px); box-shadow: 0 16px 36px -16px var(--ls-cyan); }
.ls-btn--edge {
  color: var(--ls-cream);
  border-color: var(--ls-line-strong);
  background: rgba(11, 20, 36, .6);
}
.ls-btn--edge:hover { color: var(--ls-volt); border-color: rgba(255, 210, 74, .55); transform: translateY(-1px); }

/* ---------- 桌面端轨道 ---------- */
@media (min-width: 1024px) {
  body { padding-left: var(--ls-rail-w); }
  .ls-header {
    top: 0;
    left: 0;
    right: auto;
    bottom: 0;
    width: var(--ls-rail-w);
    height: auto;
    border-bottom: 0;
    border-right: 1px solid var(--ls-line);
    background: linear-gradient(180deg, #080E1C 0%, #05070E 64%);
  }
  .ls-header__rail {
    flex-direction: column;
    align-items: stretch;
    gap: 1.5rem;
    height: 100%;
    padding: 2rem 1.35rem 1.75rem;
    overflow-y: auto;
    scrollbar-width: thin;
  }
  .ls-brand { padding-bottom: 1.35rem; border-bottom: 1px solid var(--ls-line); }
  .ls-burger { display: none; }

  .ls-nav {
    position: static;
    inset: auto;
    z-index: auto;
    width: auto;
    height: auto;
    flex: 1 1 auto;
    min-height: 0;
    gap: .85rem;
    padding: 0;
    background: none;
    border: 0;
    overflow: visible;
    transform: none;
    pointer-events: auto;
  }
  .ls-nav__link { gap: .65rem; padding-inline: .85rem; font-size: .9375rem; }
}

/* ---------- 底部滚动进度 ---------- */
body::after {
  content: "";
  position: fixed;
  left: 0;
  bottom: 0;
  z-index: 120;
  height: 2px;
  width: var(--ls-progress, 0%);
  background: linear-gradient(90deg, var(--ls-cyan), var(--ls-volt) 68%, var(--ls-magenta));
  pointer-events: none;
}

/* ---------- 移动端遮罩 ---------- */
@media (max-width: 1023px) {
  body { padding-top: var(--ls-bar-h); }
  html[data-nav-open="true"] body::before {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 60;
    background: rgba(5, 7, 14, .72);
  }
}

/* ---------- 页脚轨道 ---------- */
.ls-footer {
  position: relative;
  margin-top: 5rem;
  padding: clamp(2.5rem, 6vw, 4rem) 0 2rem;
  border-top: 1px solid var(--ls-line);
  background: linear-gradient(180deg, rgba(11, 20, 36, .66) 0%, rgba(5, 7, 14, 1) 72%);
}
.ls-footer::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: min(220px, 45%);
  height: 2px;
  background: linear-gradient(90deg, var(--ls-cyan), rgba(53, 230, 218, 0));
}
.ls-footer__track {
  width: 100%;
  max-width: var(--ls-maxw);
  margin-inline: auto;
  padding-inline: var(--ls-wrap-x);
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.25rem 2rem;
}
@media (min-width: 640px) {
  .ls-footer__track { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .ls-footer__brand { grid-column: 1 / -1; }
}
@media (min-width: 1024px) {
  .ls-footer__track { grid-template-columns: 1.5fr 1fr 1fr 1fr 1.6fr; gap: 2rem; }
  .ls-footer__brand { grid-column: auto; }
}

.ls-footer__brand { min-width: 0; }
.ls-footer__wordmark {
  margin: 0 0 .35rem;
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: -.01em;
  color: var(--ls-cream);
}
.ls-footer__wordmark::after {
  content: "";
  display: inline-block;
  width: .45rem;
  height: .45rem;
  margin-left: .55rem;
  border-radius: 50%;
  background: var(--ls-cyan);
  vertical-align: middle;
}
.ls-footer__tag { margin: 0 0 1rem; font-size: .875rem; color: var(--ls-slate); letter-spacing: .04em; }
.ls-footer__icp {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  margin: 0;
  padding: .25rem .8rem;
  border: 1px solid var(--ls-line);
  border-radius: var(--ls-pill);
  font-family: var(--ls-font-mono);
  font-size: .6875rem;
  letter-spacing: .06em;
  color: var(--ls-slate);
}

.ls-footer__group { min-width: 0; }
.ls-footer__caption {
  margin: 0 0 .85rem;
  font-family: var(--ls-font-mono);
  font-size: .6875rem;
  letter-spacing: .18em;
  color: var(--ls-cyan);
  text-transform: uppercase;
}
.ls-footer__list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: .1rem; }
.ls-footer__list a {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  color: var(--ls-slate);
  font-size: .9375rem;
  text-decoration: none;
  transition: color var(--ls-dur) var(--ls-ease);
}
.ls-footer__list a::before {
  content: "";
  width: 0;
  height: 1px;
  margin-right: 0;
  background: var(--ls-cyan);
  transition: width var(--ls-dur) var(--ls-ease), margin-right var(--ls-dur) var(--ls-ease);
}
.ls-footer__list a:hover { color: var(--ls-cream); }
.ls-footer__list a:hover::before { width: 14px; margin-right: .5rem; }

.ls-footer__contact { min-width: 0; }
.ls-footer__contact p {
  margin: 0 0 .55rem;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--ls-slate);
  word-break: break-word;
}
.ls-footer__contact strong { display: inline-block; margin-right: .4rem; color: var(--ls-cream); font-weight: 600; }
.ls-footer__notes {
  margin-top: .9rem;
  padding-top: .8rem;
  border-top: 1px dashed var(--ls-line);
  font-size: .75rem !important;
  color: rgba(150, 160, 166, .82) !important;
}

.ls-footer__base {
  width: 100%;
  max-width: var(--ls-maxw);
  margin: 2.5rem auto 0;
  padding: 1.25rem var(--ls-wrap-x) 0;
  border-top: 1px solid var(--ls-line);
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.25rem;
  justify-content: space-between;
  font-size: .75rem;
  color: rgba(150, 160, 166, .85);
  letter-spacing: .03em;
}
.ls-footer__base p { margin: 0; }
.ls-footer__copy { font-family: var(--ls-font-mono); letter-spacing: .05em; }

/* ---------- 通用容器 ---------- */
.ls-wrap {
  width: 100%;
  max-width: var(--ls-maxw);
  margin-inline: auto;
  padding-inline: var(--ls-wrap-x);
}
.ls-main { display: block; }
.ls-section { padding-block: clamp(2.5rem, 7vw, 5rem); }

/* ---------- 标签与标记 ---------- */
.ls-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: .6rem;
  margin: 0 0 1rem;
  font-family: var(--ls-font-mono);
  font-size: .6875rem;
  letter-spacing: .2em;
  color: var(--ls-cyan);
  text-transform: uppercase;
}
.ls-eyebrow::before { content: ""; width: 26px; height: 1px; background: var(--ls-cyan); }

.ls-chip {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  min-height: 30px;
  padding: .2rem .8rem;
  border: 1px solid var(--ls-line-strong);
  border-radius: var(--ls-pill);
  font-family: var(--ls-font-mono);
  font-size: .6875rem;
  letter-spacing: .08em;
  color: var(--ls-slate);
}
.ls-chip--moss { border-color: rgba(79, 107, 88, .75); color: #A3C3AA; }
.ls-chip--clay { border-color: rgba(196, 105, 63, .68); color: #E39C78; }
.ls-chip--volt { border-color: rgba(255, 210, 74, .6); color: var(--ls-volt); }
.ls-chip--magenta { border-color: rgba(228, 87, 127, .6); color: var(--ls-magenta); }

/* ---------- 面板与卡片 ---------- */
.ls-panel {
  border: 1px solid var(--ls-line);
  border-radius: var(--ls-r-lg);
  background: linear-gradient(180deg, rgba(11, 20, 36, .88) 0%, rgba(7, 11, 22, .92) 100%);
  padding: clamp(1.25rem, 3vw, 2rem);
}
.ls-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  border: 1px solid var(--ls-line);
  border-radius: var(--ls-r-md);
  background: rgba(11, 20, 36, .62);
  padding: 1.25rem;
  transition: transform var(--ls-dur) var(--ls-ease), border-color var(--ls-dur) var(--ls-ease), box-shadow var(--ls-dur) var(--ls-ease);
}
.ls-card:hover {
  transform: translateY(-3px);
  border-color: rgba(53, 230, 218, .42);
  box-shadow: 0 20px 44px -30px rgba(53, 230, 218, .95);
}

/* ---------- 正文与数值 ---------- */
.ls-prose { max-width: 66ch; }
.ls-prose p { margin: 0 0 1.35em; }
.ls-prose p:last-child { margin-bottom: 0; }
.ls-num {
  font-family: var(--ls-font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: .02em;
}

/* ---------- 速度线 ---------- */
.ls-speedline {
  height: 1px;
  margin: 0;
  border: 0;
  background: linear-gradient(90deg, rgba(53, 230, 218, .85), rgba(53, 230, 218, 0));
}
.ls-speedline--volt { background: linear-gradient(90deg, rgba(255, 210, 74, .85), rgba(255, 210, 74, 0)); }

/* ---------- 网格 ---------- */
.ls-grid { display: grid; gap: clamp(1rem, 2.5vw, 1.75rem); grid-template-columns: 1fr; }
@media (min-width: 640px) {
  .ls-grid--2,
  .ls-grid--3,
  .ls-grid--4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (min-width: 1024px) {
  .ls-grid--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
  .ls-grid--4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
}

/* ---------- 图片容器 ---------- */
.ls-figure { margin: 0; }
.ls-figure__frame {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--ls-line);
  border-radius: var(--ls-r-lg);
  background-color: var(--ls-track);
  background-image:
    repeating-linear-gradient(115deg, rgba(53, 230, 218, .1) 0 1px, rgba(53, 230, 218, 0) 1px 16px),
    radial-gradient(120% 90% at 15% 0%, rgba(53, 230, 218, .14), transparent 60%),
    radial-gradient(100% 80% at 100% 100%, rgba(228, 87, 127, .12), transparent 65%);
  isolation: isolate;
}
.ls-figure__frame > img,
.ls-figure__frame > svg,
.ls-figure__frame > picture { display: block; width: 100%; height: 100%; object-fit: cover; }
.ls-figure__frame--wide { aspect-ratio: 16 / 9; }
.ls-figure__frame--tall { aspect-ratio: 3 / 4; }
.ls-figure__frame--square { aspect-ratio: 1 / 1; }
.ls-figure__frame--auto { min-height: 12rem; }
.ls-figure__cap {
  margin-top: .75rem;
  font-size: .8125rem;
  letter-spacing: .03em;
  color: var(--ls-slate);
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
    scroll-behavior: auto !important;
  }
}