/* ============================================================
   幻影体育 · 共享站点样式 /assets/site.css
   夜场战术板：深墨绿底色 + 暖纸色正文 + 荧光青信号 + 赛场橙脉冲
   ============================================================ */

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

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

body, h1, h2, h3, h4, h5, p, ul, ol, figure, blockquote, dl, dd {
  margin: 0;
}

ul, ol { padding: 0; list-style: none; }

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

a { color: var(--cyan); text-decoration: none; }

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}

[id] { scroll-margin-top: 148px; }

/* ---------- 2. 设计变量 ---------- */
:root {
  --ink-900: #051A15;
  --ink-800: #0C2C24;
  --ink-700: #143D33;
  --paper: #F2E9D8;
  --paper-dim: #D9CFBE;
  --cyan: #50F2CE;
  --teal-line: #008F78;
  --orange: #FF7A2A;
  --mist: #A7C4B8;
  --chalk: #F7FBF2;

  --line: rgba(0, 143, 120, 0.45);
  --line-soft: rgba(167, 196, 184, 0.22);

  --font-display: "HarmonyOS Sans SC", "Source Han Sans SC", "Noto Sans SC", "PingFang SC", system-ui, -apple-system, sans-serif;
  --font-body: "Noto Sans SC", "PingFang SC", "HarmonyOS Sans SC", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --shell: 1180px;
  --gutter: clamp(18px, 4vw, 44px);
  --cut: 14px;
  --ease: cubic-bezier(0.22, 0.68, 0.24, 1);
}

/* ---------- 3. 中文排版基座 ---------- */
body {
  background: var(--ink-900);
  color: var(--paper);
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.75;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

@media (min-width: 900px) {
  body { font-size: 17px; }
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: 0.01em;
  color: var(--paper);
}

p { max-width: 44em; }

strong { font-weight: 700; color: var(--chalk); }

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

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

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

/* ---------- 4. 布局容器 ---------- */
.shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(2.8rem, 6.5vw, 5.5rem);
}

.section + .section {
  border-top: 1px solid var(--line-soft);
}

.grid {
  display: grid;
  gap: clamp(1rem, 2.4vw, 2rem);
}

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

@media (min-width: 900px) {
  .grid--split {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: start;
  }
}

/* ---------- 5. 文本层级 ---------- */
.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
}

.display-title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.6rem, 7vw, 6.4rem);
  line-height: 0.95;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

.section-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.lede {
  font-size: clamp(1rem, 1.3vw, 1.15rem);
  line-height: 1.8;
  color: var(--paper-dim);
  max-width: 38em;
}

.note {
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--mist);
  max-width: 38em;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--cyan);
}

.eyebrow::before {
  content: "";
  width: 22px;
  height: 1px;
  background: var(--cyan);
  flex: 0 0 auto;
}

/* ---------- 6. 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 48px;
  padding: 0.72rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--paper);
  border: 1px solid var(--line);
  background: transparent;
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: background 0.22s var(--ease), color 0.22s var(--ease), border-color 0.22s var(--ease);
}

.btn--primary {
  background: var(--cyan);
  border-color: var(--cyan);
  color: #04211A;
}

.btn--primary:hover { background: var(--chalk); border-color: var(--chalk); }

.btn--ghost {
  background: transparent;
  border-color: rgba(167, 196, 184, 0.55);
  color: var(--paper);
}

.btn--ghost:hover { border-color: var(--cyan); color: var(--cyan); }

/* ---------- 7. 跳转链接 ---------- */
.skip-link {
  position: fixed;
  top: 0;
  left: 50%;
  z-index: 100;
  padding: 0.8rem 1.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: #04211A;
  background: var(--cyan);
  transform: translate(-50%, -130%);
  transition: transform 0.24s var(--ease);
}

.skip-link:focus { transform: translate(-50%, 0); }

/* ---------- 8. 头部 ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: linear-gradient(180deg, #04120E 0%, var(--ink-900) 62%, #071F19 100%);
  border-bottom: 1px solid var(--line);
  box-shadow: 0 14px 34px -22px rgba(0, 0, 0, 0.95);
}

.scroll-progress {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 80;
  width: 100%;
  height: 3px;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--cyan) 62%, var(--orange) 100%);
}

.masthead__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  grid-template-areas: "idx brand cta";
  align-items: center;
  gap: 0.6rem 1rem;
  padding-block: 0.85rem;
}

.masthead__idx {
  grid-area: idx;
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.masthead__idx-sep { color: var(--teal-line); }

.brand {
  grid-area: brand;
  justify-self: center;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.3rem 0.2rem;
}

.brand__signal {
  display: inline-flex;
  flex-direction: column;
  gap: 3px;
  flex: 0 0 auto;
}

.brand__signal i {
  display: block;
  height: 3px;
  width: 13px;
  background: var(--cyan);
}

.brand__signal i:nth-child(2) { width: 9px; background: var(--orange); }
.brand__signal i:nth-child(3) { width: 5px; background: var(--mist); }

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.05;
}

.brand__name {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.3rem, 3.4vw, 1.85rem);
  letter-spacing: 0.14em;
  color: var(--paper);
}

.brand__sub {
  margin-top: 0.2rem;
  font-size: 0.58rem;
  letter-spacing: 0.32em;
  color: var(--mist);
}

.masthead__cta {
  grid-area: cta;
  justify-self: end;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  min-height: 44px;
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  color: #04211A;
  background: var(--cyan);
  border: 1px solid var(--cyan);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  transition: background 0.22s var(--ease), color 0.22s var(--ease);
}

.masthead__cta:hover { background: transparent; color: var(--cyan); }

/* 移动导航按钮 */
.nav-toggle {
  grid-area: toggle;
  display: none;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--line);
  color: var(--paper);
}

.nav-toggle__bars {
  display: inline-flex;
  flex-direction: column;
  gap: 4px;
  width: 18px;
}

.nav-toggle__bars i {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--cyan);
  transition: transform 0.24s var(--ease), opacity 0.2s var(--ease);
}

.nav-toggle__bars i:nth-child(2) { width: 70%; }

.nav-toggle__text {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  color: var(--mist);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__text { color: var(--cyan); }

/* 栏目条 */
.site-nav {
  border-top: 1px solid var(--line-soft);
  background: rgba(5, 26, 21, 0.9);
  backdrop-filter: blur(6px);
}

.site-nav__list {
  counter-reset: nav;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 0 clamp(0.4rem, 2vw, 1.6rem);
  padding-block: 0.1rem;
}

.site-nav__item { counter-increment: nav; }

.site-nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 48px;
  padding: 0.5rem 0.3rem;
  font-size: 0.95rem;
  letter-spacing: 0.05em;
  color: var(--paper-dim);
  border-bottom: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.site-nav__link::before {
  content: counter(nav, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0;
  color: var(--teal-line);
  transition: color 0.2s var(--ease);
}

.site-nav__link:hover { color: var(--paper); }
.site-nav__link:hover::before { color: var(--cyan); }

.site-nav__link[aria-current="page"] {
  color: var(--chalk);
  border-bottom-color: var(--cyan);
}

.site-nav__link[aria-current="page"]::before { color: var(--orange); }

/* ---------- 9. 页脚 ---------- */
.site-footer {
  position: relative;
  margin-top: clamp(3rem, 7vw, 6rem);
  background: #04120E;
  border-top: 1px solid var(--line);
  color: var(--paper-dim);
}

.footer-rail {
  height: 9px;
  background: repeating-linear-gradient(115deg, var(--teal-line) 0 2px, transparent 2px 10px);
  opacity: 0.65;
}

.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 3rem);
  padding-block: clamp(2.2rem, 5vw, 3.6rem);
}

@media (min-width: 640px) {
  .footer-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (min-width: 1000px) {
  .footer-grid { grid-template-columns: 1.5fr 1fr 1.4fr 1fr; }
}

.footer-brand__mark {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.6vw, 2.15rem);
  line-height: 1.1;
  letter-spacing: 0.14em;
  color: var(--paper);
}

.footer-brand__sub {
  margin-top: 0.4rem;
  font-size: 0.66rem;
  letter-spacing: 0.22em;
  color: var(--mist);
}

.footer-brand__note {
  margin-top: 1rem;
  max-width: 30em;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--paper-dim);
}

.footer-brand__status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  color: var(--orange);
}

.footer-col__title {
  padding-bottom: 0.7rem;
  margin-bottom: 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  color: var(--cyan);
  border-bottom: 1px solid var(--line-soft);
}

.footer-list {
  display: grid;
  gap: 0.5rem;
}

.footer-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 40px;
  font-size: 0.92rem;
  color: var(--paper-dim);
  transition: color 0.2s var(--ease);
}

.footer-link::before {
  content: "";
  width: 6px;
  height: 1px;
  flex: 0 0 auto;
  background: var(--teal-line);
  transition: width 0.22s var(--ease), background 0.22s var(--ease);
}

.footer-link:hover { color: var(--cyan); }
.footer-link:hover::before { width: 16px; background: var(--cyan); }

.footer-contact {
  display: grid;
  gap: 0.85rem;
}

.footer-contact__row {
  display: grid;
  gap: 0.1rem;
}

.footer-label {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.18em;
  color: var(--mist);
}

.footer-value {
  font-size: 0.9rem;
  color: var(--paper);
  word-break: break-word;
}

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.4rem 1.5rem;
  padding-block: 1.05rem;
  border-top: 1px solid var(--line-soft);
}

.footer-bottom__meta {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* 回到顶部 */
.to-top {
  position: fixed;
  right: clamp(1rem, 3vw, 2rem);
  bottom: clamp(1rem, 3vw, 2rem);
  z-index: 70;
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  min-height: 48px;
  padding: 0.6rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: #04211A;
  background: var(--cyan);
  border: 1px solid var(--cyan);
  clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
  box-shadow: 0 14px 30px -14px rgba(0, 0, 0, 0.95);
  transition: background 0.2s var(--ease), transform 0.2s var(--ease);
}

.to-top:hover { background: var(--chalk); transform: translateY(-2px); }
.to-top[hidden] { display: none; }

/* ---------- 10. 面包屑 ---------- */
.crumbs { padding-top: 1.1rem; }

.crumbs__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--mist);
}

.crumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.crumbs__item + .crumbs__item::before {
  content: "/";
  color: var(--teal-line);
}

.crumbs__link {
  color: var(--mist);
  border-bottom: 1px solid transparent;
}

.crumbs__link:hover {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.crumbs__current { color: var(--paper); }

/* ---------- 11. 面板 / 标签 / 轨迹 ---------- */
.panel {
  position: relative;
  padding: clamp(1.1rem, 2.4vw, 1.9rem);
  background: var(--ink-800);
  border: 1px solid var(--line);
  clip-path: polygon(
    var(--cut) 0,
    100% 0,
    100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%,
    0 100%,
    0 var(--cut)
  );
}

.panel--raised { background: var(--ink-700); }

.panel__title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.12rem;
  line-height: 1.3;
  letter-spacing: 0.02em;
  color: var(--chalk);
}

.panel__meta {
  margin-top: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--mist);
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.18rem 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--cyan);
  background: rgba(80, 242, 206, 0.07);
  border: 1px solid var(--teal-line);
}

.tag--alert {
  color: var(--orange);
  background: rgba(255, 122, 42, 0.09);
  border-color: rgba(255, 122, 42, 0.62);
}

.signal-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  flex: 0 0 auto;
  border-radius: 50%;
  background: var(--orange);
  animation: signal-pulse 2.2s var(--ease) infinite;
}

@keyframes signal-pulse {
  0%   { box-shadow: 0 0 0 0 rgba(255, 122, 42, 0.55); }
  70%  { box-shadow: 0 0 0 8px rgba(255, 122, 42, 0); }
  100% { box-shadow: 0 0 0 0 rgba(255, 122, 42, 0); }
}

.track-rule {
  height: 1px;
  border: 0;
  background: repeating-linear-gradient(90deg, var(--teal-line) 0 14px, transparent 14px 26px);
  opacity: 0.8;
}

.slash-band {
  height: 10px;
  background: repeating-linear-gradient(115deg, var(--teal-line) 0 2px, transparent 2px 10px);
  opacity: 0.5;
}

/* ---------- 12. 图片容器基础规则 ---------- */
.media-frame {
  position: relative;
  display: block;
  width: 100%;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 100% at 18% 0%, rgba(80, 242, 206, 0.16), transparent 62%),
    linear-gradient(150deg, #0C2C24 0%, #051A15 58%, #0A231D 100%);
  clip-path: polygon(
    18px 0,
    100% 0,
    100% calc(100% - 18px),
    calc(100% - 18px) 100%,
    0 100%,
    0 18px
  );
}

.media-frame__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.06);
}

.media-frame__caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 0.7rem 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  color: var(--paper);
  background: linear-gradient(0deg, rgba(4, 18, 14, 0.94), rgba(4, 18, 14, 0));
}

.media-frame--wide { aspect-ratio: 21 / 9; }
.media-frame--tall { aspect-ratio: 3 / 4; }

@media (max-width: 600px) {
  .media-frame--wide { aspect-ratio: 16 / 9; }
}

/* ---------- 13. 滚动显现 ---------- */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.55s var(--ease), transform 0.55s var(--ease);
}

.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 14. 响应式：头部与页脚 ---------- */
@media (max-width: 860px) {
  .masthead__inner {
    grid-template-columns: auto 1fr auto;
    grid-template-areas: "toggle brand cta";
    gap: 0.5rem;
    padding-block: 0.65rem;
  }

  .masthead__idx { display: none; }

  .nav-toggle {
    display: inline-flex;
    justify-self: start;
  }

  .brand { justify-self: center; }

  .masthead__cta {
    justify-self: end;
    padding: 0.45rem 0.75rem;
    font-size: 0.75rem;
    min-height: 44px;
  }

  .site-nav { display: none; }
  .site-nav[data-open] { display: block; }

  .site-nav__list {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding-block: 0.3rem 0.9rem;
  }

  .site-nav__item { border-bottom: 1px solid var(--line-soft); }
  .site-nav__item:last-child { border-bottom: 0; }

  .site-nav__link {
    width: 100%;
    min-height: 52px;
    padding: 0.9rem 0.2rem;
    font-size: 1rem;
    border-bottom: 0;
  }

  .site-nav__link::before { font-size: 0.7rem; }

  .site-nav__link[aria-current="page"] {
    color: var(--cyan);
    border-bottom: 0;
  }

  .site-nav__link[aria-current="page"]::after {
    content: "当前";
    margin-left: auto;
    font-family: var(--font-mono);
    font-size: 0.64rem;
    letter-spacing: 0.12em;
    color: var(--orange);
  }

  .footer-bottom { justify-content: flex-start; }
}

@media (max-width: 380px) {
  .brand__sub { letter-spacing: 0.18em; }
  .masthead__cta { padding-inline: 0.6rem; }
}

/* ---------- 15. 减少动态效果 ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }

  .js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .signal-dot { animation: none; }

  .to-top,
  .btn,
  .masthead__cta,
  .footer-link,
  .footer-link::before,
  .nav-toggle__bars i,
  .skip-link {
    transition: none;
  }
}