/* =========================================================
   乐鱼赛场 · 共享样式 / assets/site.css
   ========================================================= */

:root{
  --deep:#061B2C;
  --mid:#0B2B45;
  --lane:#104A66;
  --neon:#2FF3C8;
  --teal:#17C9A3;
  --coral:#FF6B4A;
  --coral-soft:#FFB199;
  --paper:#F5F1E8;
  --edge:#DCEBF2;
  --ink:#0A0F14;

  --font-head:"Alibaba PuHuiTi 3.0","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-body:"Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,sans-serif;
  --font-data:"JetBrains Mono","IBM Plex Mono","SFMono-Regular",Consolas,monospace;

  --wrap:1240px;
  --pad:clamp(18px,4vw,48px);
  --ease:cubic-bezier(.22,.61,.36,1);
  --bd-neon:rgba(47,243,200,.18);
  --bd-coral:rgba(255,107,74,.34);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-padding-top:150px;}
body{margin:0;}
h1,h2,h3,h4,p,figure,blockquote,dl,dd{margin:0;}
ul,ol{margin:0;padding:0;list-style:none;}
img,picture,svg,video{display:block;max-width:100%;}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer;}
a{color:inherit;}
table{border-collapse:collapse;width:100%;}
:where(a,button,[tabindex]):focus-visible{
  outline:2px solid var(--neon);
  outline-offset:3px;
  border-radius:2px;
}
.on-paper :where(a,button,[tabindex]):focus-visible{outline-color:var(--coral);}

@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth;}
}

/* ---------- base type ---------- */
body{
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.65;
  color:var(--paper);
  background:var(--deep);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

::selection{background:var(--neon);color:var(--deep);}

h1,h2,h3,h4{
  font-family:var(--font-head);
  font-weight:800;
  line-height:1.14;
  letter-spacing:.04em;
}

p{max-width:68ch;}

.display{
  font-family:var(--font-head);
  font-weight:800;
  font-size:clamp(34px,6vw,76px);
  line-height:1.04;
  letter-spacing:.04em;
  color:var(--paper);
}
.on-paper .display{color:var(--ink);}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-data);
  font-size:11.5px;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--neon);
}
.eyebrow::before{
  content:"";
  width:24px;
  height:1px;
  background:currentColor;
  opacity:.75;
  flex:0 0 auto;
}
.on-paper .eyebrow{color:var(--teal);}
.on-paper .eyebrow--coral{color:var(--coral);}

.vert-note{
  writing-mode:vertical-rl;
  font-family:var(--font-data);
  font-size:10.5px;
  letter-spacing:.32em;
  color:rgba(47,243,200,.65);
}

/* ---------- layout ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--pad);
}
.wrap--narrow{max-width:820px;}

.section{padding-block:clamp(48px,7vw,96px);}
.section--tight{padding-block:clamp(30px,4vw,56px);}

.grid{display:grid;gap:clamp(16px,2.2vw,28px);}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
.grid--4{grid-template-columns:repeat(4,minmax(0,1fr));}

@media (max-width:960px){
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:640px){
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr);}
}

.on-paper{
  background:var(--paper);
  color:var(--ink);
}
.on-paper p{color:rgba(10,15,20,.8);}

.lane-rule{
  height:1px;
  border:0;
  margin-block:clamp(26px,4vw,46px);
  background:linear-gradient(90deg,rgba(47,243,200,.55),rgba(47,243,200,.06) 65%,transparent);
}
.on-paper .lane-rule{
  background:linear-gradient(90deg,rgba(16,74,102,.5),rgba(16,74,102,.08) 65%,transparent);
}

/* ---------- surfaces ---------- */
.card{
  position:relative;
  background:linear-gradient(155deg,var(--mid),#072033 82%);
  border:1px solid var(--bd-neon);
  border-radius:2px;
  padding:clamp(18px,2.4vw,28px);
}
.card--paper{
  background:var(--paper);
  border-color:var(--edge);
  color:var(--ink);
}
.card--stack{isolation:isolate;}
.card--stack::after{
  content:"";
  position:absolute;
  inset:8px -8px -8px 8px;
  border:1px solid rgba(47,243,200,.22);
  border-radius:2px;
  z-index:-1;
  pointer-events:none;
}
.card--paper.card--stack::after{border-color:rgba(16,74,102,.24);}

/* ---------- stat ---------- */
.stat{display:flex;flex-direction:column;gap:6px;}
.stat__num{
  font-family:var(--font-data);
  font-weight:700;
  font-size:clamp(26px,3.4vw,40px);
  line-height:1;
  letter-spacing:-.01em;
  color:var(--neon);
}
.stat__num--coral{color:var(--coral);}
.stat__label{
  font-family:var(--font-data);
  font-size:10.5px;
  letter-spacing:.2em;
  color:rgba(245,241,232,.6);
}
.on-paper .stat__num{color:var(--lane);}
.on-paper .stat__num--coral{color:var(--coral);}
.on-paper .stat__label{color:rgba(10,15,20,.55);}

/* ---------- buttons & tags ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:13px 24px;
  font-family:var(--font-head);
  font-size:14.5px;
  font-weight:700;
  letter-spacing:.06em;
  border:1px solid transparent;
  border-radius:999px;
  text-decoration:none;
  transition:transform .22s var(--ease),background-color .22s var(--ease),
             color .22s var(--ease),border-color .22s var(--ease),box-shadow .22s var(--ease);
}
.btn:hover{transform:translateY(-2px);}
.btn--neon{background:var(--neon);color:var(--deep);box-shadow:0 10px 26px -14px rgba(47,243,200,.9);}
.btn--neon:hover{background:#5cffda;}
.btn--coral{background:var(--coral);color:#2A0B03;}
.btn--coral:hover{background:#ff8365;}
.btn--ghost{border-color:rgba(47,243,200,.42);color:var(--paper);}
.btn--ghost:hover{border-color:var(--neon);background:rgba(47,243,200,.09);}
.btn--paper{background:var(--ink);color:var(--paper);}
.btn--paper:hover{background:var(--lane);}
.btn--block{display:flex;width:100%;}

.on-paper .btn--ghost{border-color:rgba(16,74,102,.4);color:var(--ink);}
.on-paper .btn--ghost:hover{border-color:var(--lane);background:rgba(16,74,102,.08);}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 10px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.12em;
  line-height:1.4;
  border:1px solid rgba(47,243,200,.34);
  border-radius:2px;
  background:rgba(47,243,200,.08);
  color:var(--neon);
  white-space:nowrap;
}
.tag--coral{
  border-color:var(--bd-coral);
  background:rgba(255,107,74,.14);
  color:var(--coral-soft);
}
.tag--ink{
  border-color:rgba(10,15,20,.22);
  background:rgba(10,15,20,.05);
  color:var(--ink);
}

/* ---------- media frame ---------- */
.media-frame{
  position:relative;
  isolation:isolate;
  overflow:hidden;
  border:1px solid var(--bd-neon);
  border-radius:2px;
  aspect-ratio:16 / 9;
  background:
    repeating-linear-gradient(135deg,rgba(47,243,200,.13) 0 1px,transparent 1px 15px),
    linear-gradient(160deg,#0E3956,var(--deep) 78%);
}
.media-frame > img,
.media-frame > picture > img,
.media-frame > video{
  width:100%;
  height:100%;
  object-fit:cover;
  display:block;
}
.media-frame--wide{aspect-ratio:21 / 9;}
.media-frame--tall{aspect-ratio:3 / 4;}
.media-frame--square{aspect-ratio:1 / 1;}
.media-frame--paper{
  border-color:var(--edge);
  background:
    repeating-linear-gradient(135deg,rgba(16,74,102,.09) 0 1px,transparent 1px 15px),
    linear-gradient(160deg,#EBF4F8,var(--edge));
}
.media-frame__veil{
  position:absolute;
  inset:0;
  background:linear-gradient(to top,rgba(6,27,44,.88),rgba(6,27,44,.05) 58%,transparent);
  pointer-events:none;
}
.media-frame__label{
  position:absolute;
  left:12px;
  bottom:12px;
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:5px 10px;
  font-family:var(--font-data);
  font-size:10.5px;
  letter-spacing:.16em;
  color:var(--deep);
  background:var(--neon);
  border-radius:2px;
}
.media-frame__label--coral{background:var(--coral);color:#2A0B03;}

/* ---------- breadcrumbs ---------- */
.breadcrumbs{padding-block:16px 0;}
.breadcrumbs__list{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  font-family:var(--font-data);
  font-size:11.5px;
  letter-spacing:.1em;
}
.breadcrumbs__list li{display:flex;align-items:center;gap:8px;}
.breadcrumbs__list li + li::before{content:"/";color:rgba(47,243,200,.5);}
.breadcrumbs a{
  color:rgba(245,241,232,.72);
  text-decoration:none;
  transition:color .2s var(--ease);
}
.breadcrumbs a:hover{color:var(--neon);}
.breadcrumbs [aria-current="page"]{color:var(--neon);}
.on-paper .breadcrumbs a{color:rgba(10,15,20,.6);}
.on-paper .breadcrumbs a:hover{color:var(--lane);}
.on-paper .breadcrumbs [aria-current="page"]{color:var(--lane);}
.on-paper .breadcrumbs__list li + li::before{color:rgba(16,74,102,.5);}

/* ---------- reveal ---------- */
html.js-reveal [data-reveal]{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
  transition-delay:var(--reveal-delay,0ms);
  will-change:opacity,transform;
}
html.js-reveal [data-reveal].is-in{
  opacity:1;
  transform:none;
}

/* ---------- scroll progress ---------- */
.scroll-pulse{
  position:fixed;
  top:0;
  left:0;
  right:0;
  height:2px;
  z-index:95;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--neon),var(--teal) 55%,var(--coral));
  pointer-events:none;
}

/* =========================================================
   HEADER
   ========================================================= */
.site-head{
  position:sticky;
  top:0;
  z-index:80;
  background:var(--deep);
  border-bottom:1px solid var(--bd-neon);
  box-shadow:0 26px 44px -38px rgba(0,0,0,.95);
}

.skip-link{
  position:absolute;
  left:16px;
  top:-72px;
  z-index:120;
  padding:10px 20px;
  border-radius:999px;
  background:var(--neon);
  color:var(--deep);
  font-family:var(--font-head);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  text-decoration:none;
  transition:top .22s var(--ease);
}
.skip-link:focus{top:12px;}

.head-top{background:var(--mid);border-bottom:1px solid rgba(47,243,200,.1);}
.head-top__inner{
  max-width:var(--wrap);
  margin-inline:auto;
  padding:7px var(--pad);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:8px 22px;
  flex-wrap:wrap;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.14em;
  color:rgba(245,241,232,.6);
}
.head-top__note{margin:0;max-width:none;}
.head-top__meta{
  margin:0;
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--teal);
  max-width:none;
}
.pulse-dot{
  width:6px;
  height:6px;
  border-radius:50%;
  background:var(--neon);
  flex:0 0 auto;
  animation:pulseDot 3.4s var(--ease) infinite;
}
@keyframes pulseDot{
  0%{box-shadow:0 0 0 0 rgba(47,243,200,.55);}
  70%{box-shadow:0 0 0 9px rgba(47,243,200,0);}
  100%{box-shadow:0 0 0 0 rgba(47,243,200,0);}
}

.head-main__inner{
  max-width:var(--wrap);
  margin-inline:auto;
  padding:12px var(--pad);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}

.brand{
  display:flex;
  align-items:center;
  gap:14px;
  text-decoration:none;
  color:var(--paper);
}
.brand__mark{
  position:relative;
  display:inline-grid;
  place-items:center;
  width:44px;
  height:44px;
  flex:0 0 auto;
  border:1.5px solid var(--neon);
  color:var(--neon);
  font-family:var(--font-data);
  font-size:15px;
  letter-spacing:.06em;
}
.brand__mark::after{
  content:"";
  position:absolute;
  inset:4px;
  border:1px solid rgba(47,243,200,.28);
  pointer-events:none;
}
.brand__text{display:flex;flex-direction:column;gap:2px;}
.brand__name{
  font-family:var(--font-head);
  font-size:20px;
  font-weight:800;
  letter-spacing:.14em;
  line-height:1.15;
}
.brand__sub{
  font-size:11.5px;
  letter-spacing:.06em;
  color:rgba(245,241,232,.62);
  line-height:1.3;
}
.brand__side{
  writing-mode:vertical-rl;
  height:44px;
  display:grid;
  place-items:center;
  margin-left:6px;
  padding-left:9px;
  border-left:1px solid rgba(47,243,200,.25);
  font-family:var(--font-data);
  font-size:10px;
  letter-spacing:.3em;
  color:rgba(23,201,163,.85);
}

.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:9px 15px;
  border:1px solid rgba(47,243,200,.34);
  border-radius:999px;
  color:var(--neon);
  background:rgba(47,243,200,.04);
  font-family:var(--font-data);
  font-size:11.5px;
  letter-spacing:.16em;
  transition:border-color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--neon);background:rgba(47,243,200,.1);}
.nav-toggle__bars{
  display:inline-flex;
  flex-direction:column;
  gap:4px;
  width:16px;
}
.nav-toggle__bars span{
  display:block;
  height:1.5px;
  background:currentColor;
  transition:transform .24s var(--ease),opacity .18s var(--ease);
}
.site-head[data-open="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5.5px) rotate(45deg);}
.site-head[data-open="true"] .nav-toggle__bars span:nth-child(2){opacity:0;}
.site-head[data-open="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5.5px) rotate(-45deg);}

.site-nav{
  background:var(--mid);
  border-top:1px solid rgba(47,243,200,.1);
}
.site-nav__inner{
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--pad);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
}
.site-nav__list{
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,30px);
  flex:1 1 auto;
  min-width:0;
  overflow-x:auto;
  scrollbar-width:none;
  -ms-overflow-style:none;
}
.site-nav__list::-webkit-scrollbar{display:none;}
.site-nav__link{
  position:relative;
  display:inline-block;
  padding:14px 2px;
  font-family:var(--font-head);
  font-size:14px;
  font-weight:500;
  letter-spacing:.1em;
  white-space:nowrap;
  text-decoration:none;
  color:rgba(245,241,232,.75);
  transition:color .2s var(--ease);
}
.site-nav__link::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background:var(--neon);
  transform:scaleX(0);
  transform-origin:left;
  transition:transform .26s var(--ease);
}
.site-nav__link:hover{color:var(--neon);}
.site-nav__link:hover::after{transform:scaleX(1);}
.site-nav__link[aria-current="page"]{color:var(--neon);}
.site-nav__link[aria-current="page"]::after{transform:scaleX(1);}

.site-nav__cta{
  flex:0 0 auto;
  padding:9px 18px;
  border-radius:999px;
  background:var(--neon);
  color:var(--deep);
  font-family:var(--font-head);
  font-size:13px;
  font-weight:700;
  letter-spacing:.06em;
  text-decoration:none;
  white-space:nowrap;
  transition:transform .2s var(--ease),background-color .2s var(--ease);
}
.site-nav__cta:hover{transform:translateY(-1px);background:#5cffda;}

@media (max-width:900px){
  html{scroll-padding-top:118px;}

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

  .site-nav{
    max-height:0;
    overflow:hidden;
    border-top-color:transparent;
    transition:max-height .34s var(--ease);
  }
  .site-head[data-open="true"] .site-nav{
    max-height:660px;
    overflow-y:auto;
    border-top-color:rgba(47,243,200,.16);
  }
  .site-nav__inner{
    flex-direction:column;
    align-items:stretch;
    gap:4px;
    padding:10px var(--pad) 20px;
  }
  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    overflow:visible;
  }
  .site-nav__link{
    display:block;
    padding:13px 0 13px 2px;
    border-bottom:1px solid rgba(47,243,200,.1);
    font-size:15px;
  }
  .site-nav__link::after{display:none;}
  .site-nav__link[aria-current="page"]{
    padding-left:14px;
    color:var(--neon);
  }
  .site-nav__link[aria-current="page"]::before{
    content:"";
    position:absolute;
    left:0;
    top:50%;
    transform:translateY(-50%);
    width:3px;
    height:18px;
    background:var(--neon);
  }
  .site-nav__cta{
    display:flex;
    justify-content:center;
    margin-top:14px;
    text-align:center;
  }
}

@media (max-width:760px){
  .brand__side{display:none;}
  .brand__name{font-size:17px;letter-spacing:.12em;}
  .brand__mark{width:38px;height:38px;font-size:13px;}
  .brand__sub{font-size:10.5px;}
  .head-top__inner{font-size:10px;letter-spacing:.1em;}
}

@media (max-width:420px){
  .brand__sub{display:none;}
  .nav-toggle__text{display:none;}
  .nav-toggle{padding:10px 12px;}
}

/* =========================================================
   FOOTER
   ========================================================= */
.site-foot{
  position:relative;
  background:var(--deep);
  color:var(--paper);
  border-top:1px solid var(--bd-neon);
}
.foot-band{
  height:5px;
  background:linear-gradient(90deg,var(--neon) 0%,var(--teal) 36%,var(--coral) 76%,var(--coral-soft) 100%);
}
.foot-main{padding-block:clamp(40px,6vw,76px);}
.foot-main__inner{
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--pad);
  display:grid;
  grid-template-columns:minmax(0,1.5fr) minmax(0,1fr) minmax(0,1fr) minmax(0,1.4fr);
  gap:clamp(28px,4vw,56px);
}

.foot-brand .brand__name{font-size:19px;}
.foot-brand__note{
  margin-top:18px;
  max-width:34ch;
  font-size:13.5px;
  line-height:1.75;
  color:rgba(245,241,232,.7);
}
.foot-brand__meta{
  margin-top:14px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.12em;
  color:rgba(47,243,200,.62);
}

.foot-col__title{
  font-family:var(--font-data);
  font-size:11px;
  font-weight:500;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--teal);
  padding-bottom:10px;
  margin-bottom:16px;
  border-bottom:1px solid rgba(47,243,200,.18);
}

.foot-list{display:flex;flex-direction:column;gap:10px;}
.foot-list a{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-size:14.5px;
  text-decoration:none;
  color:rgba(245,241,232,.76);
  transition:color .2s var(--ease),transform .2s var(--ease);
}
.foot-list a::before{
  content:"";
  width:5px;
  height:5px;
  flex:0 0 auto;
  background:rgba(47,243,200,.45);
  transition:background-color .2s var(--ease);
}
.foot-list a:hover{color:var(--neon);transform:translateX(3px);}
.foot-list a:hover::before{background:var(--coral);}

.foot-contact{display:flex;flex-direction:column;gap:14px;}
.foot-contact li{display:flex;flex-direction:column;gap:3px;}
.foot-contact__k{
  font-family:var(--font-data);
  font-size:10.5px;
  letter-spacing:.18em;
  color:rgba(47,243,200,.72);
}
.foot-contact__v{
  font-size:13.5px;
  line-height:1.6;
  color:rgba(245,241,232,.82);
  overflow-wrap:anywhere;
}

.foot-base{
  border-top:1px solid rgba(47,243,200,.14);
  background:rgba(2,12,20,.55);
}
.foot-base__inner{
  max-width:var(--wrap);
  margin-inline:auto;
  padding:16px var(--pad);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px 24px;
  font-family:var(--font-data);
  font-size:11px;
  letter-spacing:.06em;
  color:rgba(245,241,232,.55);
}
.foot-base__copy{margin:0;max-width:none;}
.foot-base__meta{margin:0;max-width:none;}
.foot-base__meta:first-of-type{margin-left:auto;}

@media (max-width:1000px){
  .foot-main__inner{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (max-width:620px){
  .foot-main__inner{grid-template-columns:minmax(0,1fr);gap:34px;}
  .foot-base__inner{flex-direction:column;align-items:flex-start;gap:6px;}
  .foot-base__meta:first-of-type{margin-left:0;}
}

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