/* ==========================================================================
   GOGO赛场 · 共享外壳样式 /assets/site.css
   赛场夜光：深墨蓝连续画布 + 荧光绿动线 + 橙红计费
   ========================================================================== */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --ink:#0A1726;
  --panel:#122A42;
  --card:#18314A;
  --neon:#B8FF3C;
  --cyan:#35E0C0;
  --ember:#FF5A2B;
  --paper:#F3F7F5;
  --mist:#8FA3B8;
  --violet:#6E5BFF;
  --amber:#FFC24B;

  --line:rgba(143,163,184,.22);
  --line-strong:rgba(143,163,184,.42);
  --neon-soft:rgba(184,255,60,.12);
  --cyan-soft:rgba(53,224,192,.12);

  --shell:1240px;
  --gutter:clamp(16px,4.2vw,44px);
  --stack:clamp(56px,7vw,96px);
  --radius-xl:32px;
  --radius-lg:24px;
  --radius-md:16px;
  --radius-pill:999px;

  --font-body:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-display:"PingFang SC","HarmonyOS Sans SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --ease:240ms cubic-bezier(.22,.61,.36,1);
}

/* ---------- 2. 重置与画布 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{
  background:var(--ink);
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
}
html.is-nav-open{overflow:hidden}
body{
  margin:0;
  min-height:100vh;
  color:var(--paper);
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(143,163,184,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(143,163,184,.055) 1px,transparent 1px);
  background-size:64px 64px,64px 64px;
  background-attachment:fixed;
  font-family:var(--font-body);
  font-size:17px;
  font-weight:400;
  line-height:1.78;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img,picture,video,svg{max-width:100%}
img{display:block;height:auto}
ul,ol{margin:0;padding:0;list-style:none}
p{margin:0}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
h1,h2,h3,h4,h5,h6{
  margin:0;
  font-family:var(--font-display);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.14;
}
::selection{background:var(--neon);color:var(--ink)}
:focus-visible{outline:2px solid var(--neon);outline-offset:3px;border-radius:8px}
#main-content{scroll-margin-top:96px}

.sr-only{
  position:absolute;
  width:1px;height:1px;
  padding:0;margin:-1px;
  overflow:hidden;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  white-space:nowrap;
  border:0;
}

/* ---------- 3. 排版工具类 ---------- */
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.02em}
.h-xl{font-size:clamp(34px,5.4vw,56px)}
.h-lg{font-size:clamp(26px,3.8vw,40px)}
.h-md{font-size:clamp(21px,2.7vw,30px)}
.h-sm{font-size:clamp(18px,2.1vw,24px)}
.eyebrow{
  display:block;
  margin:0 0 10px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--cyan);
}
.lede{font-size:clamp(18px,2vw,21px);line-height:1.72;color:var(--paper)}
.note{font-size:13.5px;line-height:1.7;color:var(--mist);margin:0}

/* ---------- 4. 布局容器 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin:0 auto;
  padding:0 var(--gutter);
}
.page-shell{
  position:relative;
  z-index:1;
  max-width:var(--shell);
  margin:0 auto;
  padding:clamp(26px,4.4vw,56px) var(--gutter) 0;
}
.grid{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2.4vw,28px);
}
.grid__main{grid-column:1 / span 7;min-width:0}
.grid__rail{grid-column:9 / span 4;min-width:0}
.grid__full{grid-column:1 / -1;min-width:0}

/* ---------- 5. 堆叠画板 ---------- */
.panel{
  position:relative;
  border-radius:var(--radius-xl);
  background:var(--panel);
  padding:clamp(24px,3.4vw,48px);
  overflow:hidden;
}
.panel--card{
  background:var(--card);
  border:1px solid var(--line);
  padding:clamp(20px,2.6vw,32px);
}
.panel--flat{background:transparent;border-radius:0;padding:0}
.panel--slash::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(112deg,rgba(184,255,60,.075) 0 13%,transparent 13.4%);
}
.panel__head{margin-bottom:clamp(14px,2vw,24px)}
.panel__body{min-width:0}

.slash-rule{
  display:block;
  width:100%;
  height:2px;
  border:0;
  margin:0;
  background:linear-gradient(90deg,var(--neon) 0%,var(--cyan) 38%,transparent 92%);
  transform:skewY(-1.6deg);
  transform-origin:left center;
  opacity:.75;
}

/* ---------- 6. 胶囊标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 12px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line);
  background:rgba(143,163,184,.12);
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  line-height:1.4;
  white-space:nowrap;
}
.tag--neon{color:var(--neon);border-color:rgba(184,255,60,.42);background:var(--neon-soft)}
.tag--cyan{color:var(--cyan);border-color:rgba(53,224,192,.42);background:var(--cyan-soft)}
.tag--ember{color:var(--ember);border-color:rgba(255,90,43,.45);background:rgba(255,90,43,.12)}
.tag--violet{color:#A79BFF;border-color:rgba(110,91,255,.5);background:rgba(110,91,255,.14)}
.tag--amber{color:var(--amber);border-color:rgba(255,194,75,.45);background:rgba(255,194,75,.12)}

/* ---------- 7. 价格组件（橙红专用） ---------- */
.price{
  display:flex;
  align-items:baseline;
  gap:6px;
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  line-height:1;
}
.price__cur{font-size:.52em;color:var(--ember);opacity:.92}
.price__num{
  font-size:clamp(28px,3.6vw,44px);
  font-weight:700;
  color:var(--ember);
  letter-spacing:-.01em;
}
.price__unit{font-size:13px;color:var(--mist);font-family:var(--font-body)}
.price-card{
  border-radius:var(--radius-lg);
  background:var(--card);
  border:1px solid rgba(184,255,60,.28);
  padding:clamp(18px,2.2vw,26px);
}

/* ---------- 8. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 18px;
  border-radius:var(--radius-pill);
  border:1px solid transparent;
  font-size:15px;
  font-weight:700;
  line-height:1.2;
  cursor:pointer;
  transition:transform var(--ease),background-color var(--ease),color var(--ease),border-color var(--ease),box-shadow var(--ease);
}
.btn--price{
  background:var(--neon);
  color:var(--ink);
  box-shadow:0 8px 0 -5px rgba(184,255,60,.35);
}
.btn--price:hover{transform:translateY(-2px);background:#C9FF62}
.btn--line{border-color:var(--line-strong);color:var(--paper)}
.btn--line:hover{border-color:var(--neon);color:var(--neon)}
.btn--ghost{background:var(--panel);color:var(--paper)}
.btn--ghost:hover{background:var(--card)}
.btn--ember{background:var(--ember);color:#FFF6F2}
.btn--ember:hover{transform:translateY(-2px);background:#FF7048}

/* ---------- 9. 面包屑 ---------- */
.breadcrumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin:0 0 20px;
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--mist);
}
.breadcrumbs__item{display:flex;align-items:center;gap:8px}
.breadcrumbs__link{color:var(--mist);transition:color var(--ease)}
.breadcrumbs__link:hover{color:var(--neon)}
.breadcrumbs__sep{color:rgba(143,163,184,.5)}
.breadcrumbs__item[aria-current="page"]{color:var(--paper)}

/* ---------- 10. 图片容器 ---------- */
.media{margin:0}
.media__frame{
  position:relative;
  display:block;
  width:100%;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--line);
  background:linear-gradient(135deg,var(--card) 0%,var(--panel) 58%,rgba(110,91,255,.28) 100%);
}
.media__frame::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(115deg,rgba(184,255,60,.16) 0%,transparent 46%);
}
.media__frame > img,
.media__frame > picture,
.media__frame > picture > img{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media__cap{margin-top:10px;font-size:13px;color:var(--mist);line-height:1.6}
.media--16x9 .media__frame{aspect-ratio:16 / 9}
.media--4x3 .media__frame{aspect-ratio:4 / 3}
.media--1x1 .media__frame{aspect-ratio:1 / 1}
.media--4x5 .media__frame{aspect-ratio:4 / 5}
.media--21x9 .media__frame{aspect-ratio:21 / 9}

/* ---------- 11. 标签页（价格档位切换） ---------- */
.tabs{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 18px}
.tab{
  padding:9px 16px;
  border-radius:var(--radius-pill);
  border:1px solid var(--line-strong);
  background:transparent;
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:13px;
  cursor:pointer;
  transition:background-color var(--ease),color var(--ease),border-color var(--ease);
}
.tab:hover{color:var(--paper);border-color:var(--paper)}
.tab[aria-selected="true"]{background:var(--neon);border-color:var(--neon);color:var(--ink);font-weight:700}
.tabpanel{min-width:0}
.tabpanel[hidden]{display:none}

/* ---------- 12. 头部：左右分置 ---------- */
.skip-link{
  position:fixed;
  top:8px;
  left:8px;
  z-index:120;
  padding:10px 18px;
  border-radius:var(--radius-pill);
  background:var(--neon);
  color:var(--ink);
  font-size:14px;
  font-weight:700;
  transform:translateY(-200%);
  transition:transform var(--ease);
}
.skip-link:focus{transform:translateY(0)}

.site-head{
  position:sticky;
  top:0;
  z-index:60;
  background:rgba(10,23,38,.94);
  -webkit-backdrop-filter:blur(12px);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.site-head__inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:clamp(14px,3vw,48px);
  max-width:var(--shell);
  margin:0 auto;
  padding:12px var(--gutter);
}
.site-head__brand{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:0;
}
.site-head__rail{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:0;
}
.site-head__claim{
  margin:0;
  padding-left:13px;
  border-left:1px solid var(--line-strong);
  color:var(--mist);
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.04em;
  white-space:nowrap;
}

.brandmark{
  display:inline-flex;
  align-items:center;
  gap:10px;
  color:var(--paper);
  font-family:var(--font-display);
  font-weight:900;
  font-size:clamp(19px,2.2vw,23px);
  letter-spacing:-.02em;
  white-space:nowrap;
}
.brandmark__glyph{
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  border-radius:12px;
  background:var(--neon);
  color:var(--ink);
  font-size:15px;
  line-height:1;
  transform:skewX(-8deg);
}
.brandmark__name{line-height:1}

.nav{min-width:0}
.nav__list{display:flex;align-items:center;gap:2px}
.nav__item{display:block}
.nav__link{
  display:inline-block;
  padding:9px 13px;
  border-radius:var(--radius-pill);
  color:var(--mist);
  font-size:15px;
  font-weight:500;
  line-height:1.3;
  white-space:nowrap;
  transition:color var(--ease),background-color var(--ease),box-shadow var(--ease);
}
.nav__link:hover{color:var(--paper);background:rgba(53,224,192,.12)}
.nav__link[aria-current="page"]{
  color:var(--neon);
  background:var(--neon-soft);
  box-shadow:inset 0 0 0 1px rgba(184,255,60,.42);
}

.nav-toggle{
  display:none;
  position:relative;
  flex:0 0 auto;
  width:42px;
  height:42px;
  border-radius:14px;
  border:1px solid var(--line-strong);
  background:var(--panel);
  cursor:pointer;
}
.nav-toggle__bar{
  position:absolute;
  left:11px;
  right:11px;
  height:2px;
  border-radius:2px;
  background:var(--paper);
  transition:transform var(--ease),opacity var(--ease);
}
.nav-toggle__bar:nth-child(1){top:14px}
.nav-toggle__bar:nth-child(2){top:20px}
.nav-toggle__bar:nth-child(3){top:26px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1){transform:translateY(6px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:-1px;
  height:2px;
  background:transparent;
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--neon),var(--cyan));
  transition:width 120ms linear;
}

/* ---------- 13. 页脚 ---------- */
.site-foot{
  position:relative;
  margin-top:var(--stack);
  background:var(--panel);
  border-top:1px solid var(--line);
  overflow:hidden;
}
.site-foot::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:3px;
  background:linear-gradient(90deg,var(--neon) 0%,var(--cyan) 34%,var(--violet) 62%,transparent 100%);
}
.site-foot__inner{
  max-width:var(--shell);
  margin:0 auto;
  padding:clamp(40px,6vw,72px) var(--gutter) 26px;
}
.site-foot__top{
  display:grid;
  grid-template-columns:minmax(220px,1fr) 2.1fr;
  gap:clamp(28px,5vw,64px);
}
.site-foot__brand{min-width:0}
.site-foot__mark{
  margin:0 0 10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.2em;
  text-transform:uppercase;
  color:var(--neon);
}
.site-foot__brandline{
  margin:0 0 12px;
  font-family:var(--font-display);
  font-size:clamp(20px,2.4vw,27px);
  font-weight:900;
  letter-spacing:-.02em;
  line-height:1.3;
}
.site-foot__note{color:var(--mist);font-size:13.5px;line-height:1.72;margin:0}

.site-foot__cols{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:24px;
}
.site-foot__col{min-width:0}
.site-foot__coltitle{
  margin:0 0 12px;
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:500;
  letter-spacing:.14em;
  color:var(--cyan);
}
.site-foot__list{display:grid;gap:2px}
.site-foot__link{
  display:inline-block;
  padding:5px 0;
  color:var(--mist);
  font-size:15px;
  transition:color var(--ease),transform var(--ease);
}
.site-foot__link:hover{color:var(--neon);transform:translateX(3px)}

.site-foot__contact{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(210px,1fr));
  gap:16px 28px;
  margin-top:clamp(28px,4vw,44px);
  padding:clamp(18px,2.4vw,26px);
  border-radius:var(--radius-lg);
  background:var(--card);
  border:1px solid var(--line);
}
.site-foot__field{min-width:0}
.site-foot__field--wide{grid-column:1 / -1}
.site-foot__label{
  display:block;
  margin-bottom:4px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
  color:var(--mist);
}
.site-foot__value{
  display:block;
  color:var(--paper);
  font-size:15px;
  line-height:1.6;
  overflow-wrap:anywhere;
}
.site-foot__bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  margin-top:26px;
  padding-top:20px;
  border-top:1px solid var(--line);
}
.site-foot__legal{margin:0;font-size:13px;color:var(--mist)}
.site-foot__meta{margin:0;font-size:13px;color:var(--mist)}

/* ---------- 14. 显现 ---------- */
html.js [data-reveal]{
  opacity:0;
  transform:translateY(12px);
  transition:opacity 240ms ease,transform 240ms ease;
}
html.js [data-reveal].is-in{opacity:1;transform:none}

/* ---------- 15. 响应式：平板 ---------- */
@media (max-width:1080px){
  .grid__main,
  .grid__rail,
  .grid__full{grid-column:1 / -1}

  .site-foot__top{grid-template-columns:1fr}

  .site-head{background:var(--ink)}
  .nav-toggle{display:block}

  .nav{
    position:fixed;
    top:0;
    left:0;
    bottom:0;
    z-index:55;
    width:min(84vw,340px);
    padding:92px 18px 32px;
    overflow-y:auto;
    background:var(--panel);
    border-right:1px solid var(--line-strong);
    box-shadow:24px 0 60px rgba(0,0,0,.5);
    transform:translateX(-104%);
    transition:transform var(--ease);
  }
  .nav[data-open]{transform:translateX(0)}
  .nav__list{flex-direction:column;align-items:stretch;gap:6px}
  .nav__link{
    display:block;
    padding:14px 16px;
    border:1px solid transparent;
    border-radius:14px;
    color:var(--paper);
    font-size:17px;
  }
  .nav__link[aria-current="page"]{border-color:rgba(184,255,60,.42)}
}

@media (max-width:900px){
  .site-head__claim{display:none}
}

/* ---------- 16. 响应式：手机 ---------- */
@media (max-width:760px){
  .site-foot__cols{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 18px}
  .site-foot__contact{grid-template-columns:1fr;gap:14px}
}

@media (max-width:640px){
  :root{--gutter:13px}
  body{font-size:16.5px}
  .site-head__inner{gap:10px;padding:10px var(--gutter)}
  .brandmark{font-size:16.5px;gap:8px}
  .brandmark__glyph{width:29px;height:29px;border-radius:10px;font-size:13px}
  .site-head__rail{gap:8px}
  .nav-toggle{width:40px;height:40px}
  .nav-toggle__bar{left:10px;right:10px}
  .nav-toggle__bar:nth-child(1){top:13px}
  .nav-toggle__bar:nth-child(2){top:19px}
  .nav-toggle__bar:nth-child(3){top:25px}
  .btn{padding:10px 14px;font-size:14px}
  .btn--price{font-size:12.5px;padding:9px 11px;letter-spacing:-.01em}
  .panel{border-radius:var(--radius-lg)}
  .site-foot__bottom{flex-direction:column;align-items:flex-start}
}

/* ---------- 17. 焦点与降低动效 ---------- */
a:focus-visible,
button:focus-visible,
[tabindex]:focus-visible{
  outline:2px solid var(--neon);
  outline-offset:3px;
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.js [data-reveal]{opacity:1;transform:none}
}