/* ============================================================
   /assets/site.css — 加加体育 V4 控制台 共享外壳样式
   ============================================================ */

:root {
  --ink-900: #06111F;
  --ink-800: #0B1F33;
  --ink-700: #16344D;
  --ink-600: #2A4A66;
  --mint: #38F2C4;
  --mint-soft: #8FFFE3;
  --orange: #FF6A3D;
  --amber: #FFB547;
  --paper: #EDF7FF;
  --muted: #9CB3C8;

  --font-sans: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Source Han Sans SC", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, "Liberation Mono", monospace;

  --rail-w: 236px;
  --topbar-h: 68px;
  --gutter: 24px;
  --ease: cubic-bezier(.2, .8, .2, 1);
  --shadow-hard: 8px 8px 0 var(--ink-700);
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  color: var(--paper);
  background-color: var(--ink-900);
  background-image:
    radial-gradient(120% 78% at 88% -12%, rgba(56, 242, 196, .10), transparent 58%),
    radial-gradient(100% 78% at 4% 112%, rgba(255, 106, 61, .08), transparent 62%),
    linear-gradient(rgba(42, 74, 102, .16) 1px, transparent 1px),
    linear-gradient(90deg, rgba(42, 74, 102, .16) 1px, transparent 1px);
  background-size: auto, auto, 72px 72px, 72px 72px;
  background-position: center top, center bottom, left top, left top;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 .5em;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.04em;
  color: var(--paper);
}

p { margin: 0 0 1em; }
p:last-child { margin-bottom: 0; }

a { color: var(--mint); text-decoration: none; }
a:hover { color: var(--mint-soft); }

ul, ol { margin: 0 0 1em; padding-inline-start: 1.2em; }

img, svg, video { max-width: 100%; height: auto; display: block; }

button { font: inherit; color: inherit; }

::selection { background: var(--mint); color: var(--ink-900); }

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

/* ---------- 桌面端为固定左轨道让位 ---------- */
@media (min-width: 1024px) {
  body { padding-inline-start: var(--rail-w); }
}

/* ============================================================
   通用容器与版式组件
   ============================================================ */
.container {
  width: 100%;
  max-width: 1440px;
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.stack {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 7fr) minmax(0, 3fr);
  gap: 24px;
  align-items: start;
}

.grid {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}

.panel {
  position: relative;
  padding: 24px;
  background: var(--ink-800);
  border: 2px solid var(--ink-600);
  box-shadow: var(--shadow-hard);
}

.panel--mint {
  border-color: rgba(56, 242, 196, .42);
  box-shadow: 8px 8px 0 rgba(56, 242, 196, .14);
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--mint);
}

.section-head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px 18px;
  align-items: end;
  padding-bottom: 18px;
  margin-bottom: 26px;
  border-bottom: 2px solid var(--ink-700);
}

.section-head__idx {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--mint);
  padding-bottom: 6px;
}

.section-head__title {
  margin: 0;
  font-size: clamp(26px, 3.4vw, 42px);
  line-height: 1.1;
  letter-spacing: -.04em;
  color: var(--paper);
}

.section-head__note {
  grid-column: 2;
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  color: var(--muted);
  letter-spacing: 0;
  line-height: 1.7;
}

.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--mint); }

.breadcrumb__sep { color: var(--ink-600); }

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  background: rgba(42, 74, 102, .28);
  border: 1px solid var(--ink-600);
}

.tag--live {
  color: var(--mint);
  border-color: rgba(56, 242, 196, .5);
  background: rgba(56, 242, 196, .1);
}

.tag--warn {
  color: var(--orange);
  border-color: rgba(255, 106, 61, .55);
  background: rgba(255, 106, 61, .12);
}

.tag--amber {
  color: var(--amber);
  border-color: rgba(255, 181, 71, .5);
  background: rgba(255, 181, 71, .1);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-btn {
  appearance: none;
  cursor: pointer;
  padding: 7px 13px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--muted);
  background: transparent;
  border: 2px solid var(--ink-600);
  transition: color .2s var(--ease), border-color .2s var(--ease),
              background-color .2s var(--ease), transform .2s var(--ease);
}

.filter-btn:hover {
  color: var(--paper);
  border-color: var(--mint-soft);
  transform: translateY(-1px);
}

.filter-btn[aria-pressed="true"] {
  color: var(--ink-900);
  background: var(--mint);
  border-color: var(--mint);
}

.data-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -.02em;
  line-height: 1;
}

.frame {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16 / 9;
  background:
    repeating-linear-gradient(135deg, rgba(42, 74, 102, .35) 0 2px, transparent 2px 12px),
    var(--ink-800);
  border: 2px solid var(--ink-600);
  box-shadow: inset 0 0 0 1px rgba(56, 242, 196, .12);
}

.frame img,
.frame svg,
.frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.frame::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(6, 17, 31, 0) 42%, rgba(6, 17, 31, .84) 100%);
}

.frame--wide { aspect-ratio: 21 / 9; }
.frame--square { aspect-ratio: 1 / 1; }
.frame--tall { aspect-ratio: 4 / 5; }

.frame__label {
  position: absolute;
  inset-inline-start: 0;
  inset-block-end: 0;
  z-index: 2;
  padding: 6px 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--mint);
  background: var(--ink-900);
  border-top: 2px solid var(--ink-600);
  border-inline-end: 2px solid var(--ink-600);
}

.divider {
  height: 0;
  margin: 32px 0;
  border: 0;
  border-top: 2px dashed var(--ink-600);
}

.note-vertical {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .3em;
  text-transform: uppercase;
  color: var(--ink-600);
}

.link-more {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 800;
  color: var(--mint);
  border-bottom: 2px solid transparent;
  transition: gap .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.link-more::after { content: "→"; }

.link-more:hover {
  gap: 13px;
  color: var(--mint-soft);
  border-bottom-color: var(--mint-soft);
}

/* 筛选与显现状态 */
.is-hidden { display: none !important; }

.is-filter-in { animation: filterIn .3s var(--ease) both; }

@keyframes filterIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: none; }
}

[data-reveal] {
  transition: opacity .5s var(--ease), transform .5s var(--ease);
}

html[data-reveal-ready] [data-reveal]:not(.is-visible) {
  opacity: 0;
  transform: translateY(14px);
}

/* ============================================================
   按钮
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 18px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: .02em;
  line-height: 1.2;
  white-space: nowrap;
  cursor: pointer;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: 2px;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease),
              background-color .2s var(--ease), color .2s var(--ease),
              border-color .2s var(--ease);
}

.btn--primary {
  color: var(--ink-900);
  background: var(--mint);
  border-color: var(--mint);
  box-shadow: 4px 4px 0 rgba(6, 17, 31, .9), 4px 4px 0 2px rgba(56, 242, 196, .32);
}

.btn--primary:hover {
  color: var(--ink-900);
  background: var(--mint-soft);
  border-color: var(--mint-soft);
  transform: translate(-1px, -1px);
  box-shadow: 6px 6px 0 rgba(6, 17, 31, .9), 6px 6px 0 2px rgba(56, 242, 196, .32);
}

.btn--ghost {
  color: var(--paper);
  background: transparent;
  border-color: var(--ink-600);
}

.btn--ghost:hover {
  color: var(--mint);
  background: rgba(56, 242, 196, .08);
  border-color: var(--mint);
}

.btn--sm {
  padding: 8px 12px;
  font-size: 12.5px;
}

/* ============================================================
   头部：跳过链接
   ============================================================ */
.skip-link {
  position: fixed;
  z-index: 300;
  inset-block-start: 12px;
  inset-inline-start: 12px;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 800;
  color: var(--ink-900);
  background: var(--mint);
  border: 2px solid var(--ink-900);
  transform: translateY(-220%);
  transition: transform .2s var(--ease);
}

.skip-link:focus {
  transform: translateY(0);
  color: var(--ink-900);
}

/* ============================================================
   头部：左侧轨道导航
   ============================================================ */
.site-header {
  position: relative;
  z-index: 60;
}

.rail {
  position: fixed;
  inset-block: 0;
  inset-inline-start: 0;
  z-index: 130;
  display: flex;
  flex-direction: column;
  gap: 18px;
  width: var(--rail-w);
  padding: 22px 18px 20px;
  background: linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 68%);
  border-inline-end: 2px solid var(--ink-700);
  box-shadow: inset -1px 0 0 rgba(56, 242, 196, .16);
}

.rail__close {
  position: absolute;
  inset-block-start: 16px;
  inset-inline-end: 14px;
  z-index: 2;
  display: none;
  place-items: center;
  width: 36px;
  height: 36px;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  cursor: pointer;
  color: var(--paper);
  background: transparent;
  border: 2px solid var(--ink-600);
}

.rail__close:hover {
  color: var(--orange);
  border-color: var(--orange);
}

.rail__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--ink-700);
}

.rail__mark {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 38px;
  height: 38px;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--ink-900);
  background: var(--mint);
  box-shadow: 4px 4px 0 rgba(56, 242, 196, .22);
}

.rail__logo {
  display: flex;
  flex-direction: column;
  font-size: 17px;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--paper);
}

.rail__logo:hover { color: var(--paper); }

.rail__logo-sub {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--mint);
}

.rail-nav { flex: 1 1 auto; }

.rail-nav__list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.rail-nav__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 10px 10px 12px;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--muted);
  text-decoration: none;
  border-inline-start: 2px solid transparent;
  transition: color .2s var(--ease), background-color .2s var(--ease),
              border-color .2s var(--ease), transform .2s var(--ease);
}

.rail-nav__idx {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  color: var(--ink-600);
  transition: color .2s var(--ease);
}

.rail-nav__label { line-height: 1.3; }

.rail-nav__link:hover {
  color: var(--paper);
  background: rgba(56, 242, 196, .07);
  border-inline-start-color: var(--mint-soft);
  transform: translateX(2px);
}

.rail-nav__link:hover .rail-nav__idx { color: var(--mint); }

.rail-nav__link[aria-current="page"] {
  font-weight: 800;
  color: var(--ink-900);
  background: var(--mint);
  border-inline-start-color: var(--mint);
  box-shadow: 4px 4px 0 rgba(56, 242, 196, .18);
}

.rail-nav__link[aria-current="page"] .rail-nav__idx {
  color: var(--ink-800);
  opacity: .7;
}

.rail__foot {
  margin-block-start: auto;
  padding-top: 16px;
  border-top: 2px solid var(--ink-700);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rail__status {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.55;
  letter-spacing: .02em;
  color: var(--muted);
}

.rail__dot {
  flex: 0 0 auto;
  width: 7px;
  height: 7px;
  margin-top: 6px;
  border-radius: 50%;
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 106, 61, .18);
}

/* 遮罩层（仅移动端） */
.rail-scrim {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 120;
  opacity: 0;
  pointer-events: none;
  background: rgba(3, 9, 16, .74);
  transition: opacity .3s var(--ease);
}

.rail-scrim[data-open="true"] {
  opacity: 1;
  pointer-events: auto;
}

/* ============================================================
   头部：顶部状态条
   ============================================================ */
.topbar {
  position: sticky;
  inset-block-start: 0;
  z-index: 55;
  background: rgba(6, 17, 31, .93);
  border-bottom: 2px solid var(--ink-700);
  box-shadow: 0 12px 28px rgba(3, 9, 16, .5);
  backdrop-filter: blur(8px);
}

.topbar__inner {
  display: flex;
  align-items: center;
  gap: 14px;
  max-width: 1440px;
  min-height: var(--topbar-h);
  margin-inline: auto;
  padding: 12px var(--gutter);
}

.topbar__brand {
  display: none;
  font-size: 16px;
  font-weight: 800;
  letter-spacing: -.02em;
  color: var(--paper);
  white-space: nowrap;
}

.topbar__brand:hover { color: var(--mint); }

.topbar__status {
  display: flex;
  align-items: center;
  gap: 9px;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topbar__dot {
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--mint);
  box-shadow: 0 0 0 3px rgba(56, 242, 196, .2);
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-inline-start: auto;
}

.rail-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  cursor: pointer;
  color: var(--paper);
  background: transparent;
  border: 2px solid var(--ink-600);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.rail-toggle:hover,
.rail-toggle[aria-expanded="true"] {
  color: var(--mint);
  border-color: var(--mint);
}

.rail-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  width: 14px;
}

.rail-toggle__bars i {
  display: block;
  height: 2px;
  background: currentColor;
}

.rail-toggle__text { line-height: 1; }

.scroll-progress {
  position: absolute;
  inset-inline: 0;
  inset-block-end: -2px;
  height: 2px;
  background: linear-gradient(90deg, var(--mint), var(--mint-soft));
  transform: scaleX(0);
  transform-origin: 0 50%;
  z-index: 2;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer {
  position: relative;
  margin-block-start: 72px;
  background: linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 86%);
  border-top: 2px solid var(--ink-700);
}

.site-footer::before {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-start: 0;
  height: 4px;
  background: repeating-linear-gradient(
    90deg,
    var(--mint) 0 44px,
    transparent 44px 88px,
    var(--orange) 88px 132px,
    transparent 132px 220px
  );
  opacity: .7;
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, minmax(0, .75fr)) 1.5fr;
  gap: 34px;
  max-width: 1440px;
  margin-inline: auto;
  padding: 60px var(--gutter) 44px;
}

.footer__brand { display: flex; flex-direction: column; gap: 14px; }

.footer__wordmark {
  margin: 0;
  font-size: clamp(30px, 4vw, 44px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -.05em;
  color: var(--paper);
}

.footer__tagline {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--mint);
}

.footer__cta { align-self: flex-start; }

.footer__col { min-width: 0; }

.footer__title {
  margin: 0 0 14px;
  padding-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 2px solid var(--ink-700);
}

.footer__list {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer__list a {
  font-size: 14px;
  color: var(--muted);
  border-bottom: 2px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.footer__list a:hover {
  color: var(--mint);
  border-bottom-color: var(--mint);
}

.footer__meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer__meta li {
  display: grid;
  grid-template-columns: 4.6em minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.footer__meta-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ink-600);
  text-transform: uppercase;
}

.footer__meta-val {
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--paper);
  word-break: break-word;
}

.footer__bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 28px;
  max-width: 1440px;
  margin-inline: auto;
  padding: 18px var(--gutter) 36px;
  border-top: 2px solid var(--ink-700);
}

.footer__legal,
.footer__note {
  margin: 0;
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  font-family: var(--font-mono);
  letter-spacing: .02em;
}

.footer__note { max-width: 62ch; }

/* ============================================================
   响应式
   ============================================================ */
@media (max-width: 1100px) {
  .footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 30px; }
  .footer__brand { grid-column: 1 / -1; }
}

@media (max-width: 1023px) {
  .rail {
    inset-block: 0;
    inset-inline-start: 0;
    inset-inline-end: auto;
    width: min(86vw, 320px);
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform .34s var(--ease);
    box-shadow: 24px 0 60px rgba(2, 8, 14, .72);
  }

  .rail[data-open="true"] { transform: translateX(0); }

  .rail__close { display: grid; }

  .rail-scrim { display: block; }

  .rail-toggle { display: inline-flex; }

  .topbar__brand { display: inline-block; }

  .topbar__status { display: none; }

  body.nav-open { overflow: hidden; }
}

@media (max-width: 900px) {
  .split { grid-template-columns: minmax(0, 1fr); }
}

@media (max-width: 640px) {
  :root { --gutter: 16px; --shadow-hard: 6px 6px 0 var(--ink-700); }

  body { font-size: 15.5px; line-height: 1.72; }

  .panel { padding: 18px; }

  .section-head { grid-template-columns: minmax(0, 1fr); }

  .section-head__note { grid-column: 1; }

  .topbar__inner { gap: 10px; padding-block: 10px; }

  .topbar__actions { gap: 8px; }

  .topbar__actions .btn { padding: 9px 12px; font-size: 12.5px; }

  .footer__grid { grid-template-columns: minmax(0, 1fr); gap: 26px; padding-block: 44px 30px; }

  .footer__bottom { flex-direction: column; }

  .footer__meta li { grid-template-columns: minmax(0, 1fr); gap: 2px; }
}

@media (max-width: 420px) {
  .topbar__actions .btn--ghost { display: none; }
  .rail-toggle__text { display: none; }
}

/* ============================================================
   动效偏好
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  *,
  *::before,
  *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  [data-reveal],
  html[data-reveal-ready] [data-reveal]:not(.is-visible) {
    opacity: 1 !important;
    transform: none !important;
  }

  .rail { transition: none; }
  .is-filter-in { animation: none; }
}