/* ==========================================================
   乐鱼体育 · 共享样式 /assets/site.css
   深海蓝看台 · 荧光青刻度 · 乐鱼橙高亮
   ========================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --deep:#071726;
  --night:#0E2A42;
  --slate:#1C3B52;
  --mist:#EAF1F6;
  --ink:#0A141D;
  --cyan:#3DE0D0;
  --teal:#0B7F7A;
  --orange:#FF6B2C;
  --orange-pale:#FFD3BE;
  --soft:#A9C0D0;
  --white:#FFFFFF;

  --font-display:"Oswald","Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-body:"Noto Sans SC","PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"IBM Plex Mono","JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --shell:min(1240px,100% - 2 * clamp(16px,4vw,56px));
  --radius:18px;
  --line:rgba(169,192,208,.18);
  --line-strong:rgba(61,224,208,.42);
  --ease:cubic-bezier(.22,.61,.36,1);
  --header-h:76px;
}

/* ---------- 2. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.75;
  font-weight:400;
  color:var(--white);
  background-color:var(--deep);
  background-image:
    radial-gradient(circle at 10% -10%, rgba(61,224,208,.12), transparent 46%),
    radial-gradient(circle at 94% 2%, rgba(255,107,44,.09), transparent 42%),
    repeating-linear-gradient(0deg, rgba(169,192,208,.05) 0 1px, transparent 1px 96px),
    repeating-linear-gradient(90deg, rgba(169,192,208,.05) 0 1px, transparent 1px 96px);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
}
img,svg,video{display:block;max-width:100%}
h1,h2,h3,h4,p,figure,ul,ol{margin:0}
ul,ol{list-style:none;padding:0}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit}
[hidden]{display:none !important}

:focus-visible{outline:2px solid var(--cyan);outline-offset:3px;border-radius:4px}
.section--mist :focus-visible,.media :focus-visible{outline-color:var(--teal)}

/* ---------- 3. 布局基础 ---------- */
.shell{width:var(--shell);margin-inline:auto}
.section{padding-block:clamp(48px,7vw,96px);position:relative}
.section--slate{
  background:linear-gradient(180deg,rgba(28,59,82,.62) 0%,rgba(28,59,82,.18) 70%,rgba(7,23,38,0) 100%);
  border-block:1px solid var(--line);
}
.section--mist{background:var(--mist);color:var(--ink)}
.section--mist .eyebrow{color:var(--teal)}
.grid{display:grid;gap:clamp(16px,2.4vw,32px)}
.grid--split{grid-template-columns:minmax(0,1.55fr) minmax(0,1fr)}
.grid--split-rev{grid-template-columns:minmax(0,1fr) minmax(0,1.55fr)}
.rule{height:1px;border:0;margin:0;background:linear-gradient(90deg,var(--cyan),rgba(169,192,208,.12) 40%,transparent)}

/* ---------- 4. 排版 ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;font-weight:500;
  letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);
}
.eyebrow::before{content:"";width:26px;height:2px;background:var(--orange)}
.section-head{display:grid;gap:14px;max-width:62ch;margin-bottom:clamp(24px,3vw,44px)}
.display,.page-title{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.02;
  letter-spacing:-.015em;
  text-wrap:balance;
}
.display{font-size:clamp(2.6rem,7vw,5.6rem)}
.page-title{font-size:clamp(2rem,4.4vw,3.4rem);line-height:1.1}
.display em,.page-title em{
  font-style:normal;color:var(--cyan);
  box-shadow:inset 0 -.14em 0 rgba(61,224,208,.22);
}
.lead{font-size:clamp(1rem,1.35vw,1.125rem);line-height:1.8;color:var(--soft);max-width:62ch}
.section--mist .lead{color:#33505f}
.prose{max-width:62ch;font-size:17px}
.prose p + p{margin-top:1.1em}
.prose h2,.prose h3{margin-top:1.8em;font-family:var(--font-display);font-weight:900;line-height:1.2}
.prose h2{font-size:clamp(1.4rem,2.4vw,1.9rem)}
.prose h3{font-size:1.15rem}
.prose ul{list-style:none;display:grid;gap:.6em;margin-top:1em}
.prose ul li{position:relative;padding-left:1.4em}
.prose ul li::before{content:"";position:absolute;left:0;top:.72em;width:8px;height:2px;background:var(--cyan)}
.section--mist .prose ul li::before{background:var(--teal)}
.coord{
  font-family:var(--font-mono);font-size:12px;letter-spacing:.18em;
  color:var(--soft);text-transform:uppercase;
}
.coord--side{writing-mode:vertical-rl;transform:rotate(180deg)}

/* ---------- 5. 按钮与标签 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;border-radius:999px;border:1px solid transparent;
  font-size:14px;font-weight:600;letter-spacing:.04em;line-height:1.2;
  text-decoration:none;cursor:pointer;white-space:nowrap;
  transition:background-color .2s var(--ease),color .2s var(--ease),
             border-color .2s var(--ease),box-shadow .2s var(--ease);
}
.btn--primary{background:var(--orange);color:#1B0C05;box-shadow:0 0 0 1px rgba(255,107,44,.45)}
.btn--primary:hover{background:#FF8047;box-shadow:0 0 0 1px rgba(255,107,44,.7),0 8px 26px rgba(255,107,44,.25)}
.btn--ghost{background:transparent;border-color:var(--line-strong);color:var(--cyan)}
.btn--ghost:hover{background:rgba(61,224,208,.14);border-color:var(--cyan)}
.btn--quiet{background:transparent;border-color:var(--line);color:var(--soft)}
.btn--quiet:hover{border-color:var(--soft);color:var(--white)}
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;border-radius:999px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  border:1px solid var(--line);color:var(--soft);
}
.tag--cyan{border-color:rgba(61,224,208,.55);color:var(--cyan);background:rgba(61,224,208,.08)}
.tag--orange{border-color:rgba(255,107,44,.55);color:var(--orange);background:rgba(255,107,44,.08)}
.section--mist .tag--orange{color:#B23E0C;border-color:rgba(255,107,44,.5);background:rgba(255,211,190,.45)}
.data-num{
  font-family:var(--font-mono);font-weight:500;font-variant-numeric:tabular-nums;
  letter-spacing:.02em;color:var(--cyan);
}
.section--mist .data-num{color:var(--teal)}

/* ---------- 6. 档案卡 ---------- */
.archive-card{
  position:relative;display:grid;gap:12px;align-content:start;
  padding:clamp(18px,2.2vw,26px);
  border:1px solid var(--line);border-radius:var(--radius);
  background:linear-gradient(160deg,rgba(28,59,82,.55),rgba(14,42,66,.35));
  transition:border-color .22s var(--ease),box-shadow .22s var(--ease),background-color .22s var(--ease);
}
.archive-card:hover{border-color:var(--line-strong);box-shadow:0 0 0 1px rgba(61,224,208,.2),0 18px 40px rgba(0,0,0,.35)}
.section--mist .archive-card{background:var(--white);border-color:rgba(11,127,122,.22);color:var(--ink)}

/* ---------- 7. 图片容器基础（页面阶段放入 <img>） ---------- */
.media{
  position:relative;display:block;overflow:hidden;isolation:isolate;
  border:1px solid var(--line);border-radius:var(--radius);
  background:
    linear-gradient(150deg,var(--night),var(--slate)),
    repeating-linear-gradient(0deg,rgba(61,224,208,.12) 0 1px,transparent 1px 44px);
}
.media img,.media video{width:100%;height:100%;object-fit:cover}
.media::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,transparent 42%,rgba(7,23,38,.78) 100%);
}
.media--wide{aspect-ratio:16/9}
.media--tall{aspect-ratio:3/4}
.media--square{aspect-ratio:1/1}
.media--grid{background-image:
  repeating-linear-gradient(0deg,rgba(61,224,208,.14) 0 1px,transparent 1px 48px),
  repeating-linear-gradient(90deg,rgba(61,224,208,.14) 0 1px,transparent 1px 48px);}
.media__tag{
  position:absolute;left:14px;top:14px;z-index:2;
  padding:4px 10px;border-radius:999px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--deep);background:var(--cyan);
}
.media__coord{
  position:absolute;right:12px;top:14px;z-index:2;
  writing-mode:vertical-rl;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;
  color:rgba(234,241,246,.75);
}
.media__caption{
  position:absolute;left:14px;right:14px;bottom:12px;z-index:2;
  font-size:13px;line-height:1.5;color:var(--mist);
}

/* ---------- 8. 标签页面板 ---------- */
.tabs{display:grid;gap:clamp(16px,2vw,28px)}
.tabs__list{
  display:flex;flex-wrap:wrap;gap:8px;
  padding-bottom:14px;border-bottom:1px solid var(--line);
}
.tabs__tab{
  padding:9px 16px;border-radius:999px;
  border:1px solid var(--line);color:var(--soft);
  font-size:14px;font-weight:600;letter-spacing:.03em;
  transition:color .2s var(--ease),border-color .2s var(--ease),background-color .2s var(--ease);
}
.tabs__tab:hover{border-color:var(--line-strong);color:var(--white)}
.tabs__tab[aria-selected="true"]{background:var(--cyan);border-color:var(--cyan);color:#04222A}
.tabs__panel{padding-top:4px}

/* ---------- 9. 面包屑 ---------- */
.breadcrumb{margin-block:clamp(20px,3vw,32px)}
.breadcrumb ol{display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--soft)}
.breadcrumb li+li::before{content:"/";margin-right:10px;color:rgba(169,192,208,.45)}
.breadcrumb a{text-decoration:none;color:var(--soft)}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb [aria-current="page"]{color:var(--white)}

/* ---------- 10. 显现动效 ---------- */
.is-reveal-pending{opacity:0;transform:translateY(16px)}
.is-revealed{opacity:1;transform:none;transition:opacity .6s var(--ease),transform .6s var(--ease)}

/* ---------- 11. 跳转链接 ---------- */
.skip-link{
  position:fixed;top:10px;left:10px;z-index:200;
  padding:12px 18px;border-radius:999px;
  background:var(--cyan);color:#04222A;font-weight:700;text-decoration:none;
  transform:translateY(-180%);transition:transform .2s var(--ease);
}
.skip-link:focus{transform:none}

/* ---------- 12. 页头 ---------- */
.site-header{position:sticky;top:0;z-index:80}

.topbar{background:var(--night);border-bottom:1px solid rgba(61,224,208,.16)}
.topbar__inner{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  min-height:44px;padding-block:6px;
}
.topbar__coord{
  display:flex;align-items:center;gap:12px;
  font-size:12.5px;letter-spacing:.08em;color:var(--soft);
}
.coord-mark{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--cyan);padding-right:12px;border-right:1px solid rgba(61,224,208,.3);
}
.topbar__axes{display:flex;align-items:center;gap:8px}
.axis-link{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 12px;border-radius:999px;
  border:1px solid rgba(61,224,208,.25);
  font-size:12.5px;letter-spacing:.06em;color:var(--mist);text-decoration:none;
  transition:border-color .2s var(--ease),background-color .2s var(--ease),color .2s var(--ease);
}
.axis-link:hover{border-color:var(--cyan);background:rgba(61,224,208,.12);color:var(--white)}
.axis-link__k{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.14em;
  color:var(--orange);text-transform:uppercase;
}

.header-bar{background:var(--deep);border-bottom:1px solid var(--line);box-shadow:0 12px 30px rgba(4,12,20,.35)}
.header-bar__inner{
  display:flex;align-items:center;gap:clamp(14px,2.6vw,36px);
  min-height:var(--header-h);
}
.brand{display:grid;gap:2px;text-decoration:none;color:var(--white);line-height:1.1}
.brand__mark{
  position:relative;
  font-family:var(--font-display);font-weight:900;
  font-size:clamp(20px,2.1vw,26px);letter-spacing:.06em;
  padding-left:16px;
}
.brand__mark::before{
  content:"";position:absolute;left:0;top:50%;width:8px;height:8px;
  background:var(--orange);transform:translateY(-50%) rotate(45deg);
}
.brand__sub{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.28em;
  color:var(--soft);padding-left:16px;text-transform:uppercase;
}
.brand:hover .brand__mark{color:var(--cyan)}

.nav{margin-left:auto}
.nav__list{display:flex;align-items:center;gap:clamp(10px,1.8vw,26px)}
.nav__list a{
  position:relative;display:inline-block;
  padding:8px 2px;text-decoration:none;
  font-size:15px;letter-spacing:.02em;color:var(--soft);
  transition:color .2s var(--ease);
}
.nav__list a::after{
  content:"";position:absolute;left:0;right:0;bottom:0;height:2px;
  background:var(--cyan);transform:scaleX(0);transform-origin:left;
  transition:transform .22s var(--ease);
}
.nav__list a:hover{color:var(--white)}
.nav__list a:hover::after{transform:scaleX(1)}
.nav__list a[aria-current="page"]{color:var(--white);font-weight:600}
.nav__list a[aria-current="page"]::after{transform:scaleX(1);background:var(--orange)}

.header-cta{flex:none}

.nav-toggle{
  display:none;align-items:center;gap:8px;
  padding:11px 16px;border-radius:999px;
  border:1px solid var(--line-strong);color:var(--cyan);
  font-size:13px;letter-spacing:.06em;
}
.nav-toggle__bars{position:relative;width:20px;height:2px;background:currentColor;transition:background-color .2s var(--ease)}
.nav-toggle__bars::before,.nav-toggle__bars::after{
  content:"";position:absolute;left:0;width:20px;height:2px;background:currentColor;
  transition:transform .22s var(--ease);
}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}
.site-header[data-open="true"] .nav-toggle__bars{background:transparent}
.site-header[data-open="true"] .nav-toggle__bars::before{transform:translateY(6px) rotate(45deg)}
.site-header[data-open="true"] .nav-toggle__bars::after{transform:translateY(-6px) rotate(-45deg)}

.progress{
  position:absolute;left:0;bottom:0;height:2px;width:0;z-index:2;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  will-change:width;
}

/* ---------- 13. 页脚 ---------- */
.site-footer{
  position:relative;
  background:
    linear-gradient(180deg,rgba(14,42,66,.9),rgba(7,23,38,.98)),
    repeating-linear-gradient(90deg,rgba(169,192,208,.06) 0 1px,transparent 1px 120px);
  border-top:1px solid rgba(61,224,208,.25);
  color:var(--soft);
}
.footer-grid{
  display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr) minmax(0,1.2fr);
  gap:clamp(24px,4vw,56px);
  padding-block:clamp(40px,6vw,72px);
}
.footer-brand{display:grid;gap:14px;align-content:start}
.brand--footer .brand__mark{font-size:clamp(22px,2.4vw,28px);color:var(--white)}
.brand--footer .brand__sub{color:rgba(169,192,208,.75)}
.footer-note{font-size:13.5px;line-height:1.75;color:rgba(169,192,208,.85);max-width:34ch}
.footer-coord{
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;
  color:var(--cyan);text-transform:uppercase;
}
.footer-title{
  font-family:var(--font-mono);font-size:11.5px;font-weight:500;
  letter-spacing:.22em;text-transform:uppercase;color:var(--white);
  margin-bottom:16px;
}
.footer-nav ul{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px 18px}
.footer-nav a{
  display:inline-block;font-size:14.5px;color:var(--soft);text-decoration:none;
  padding-block:3px;transition:color .2s var(--ease),transform .2s var(--ease);
}
.footer-nav a:hover{color:var(--cyan)}
.footer-contact{display:grid;gap:10px;align-content:start}
.foot-line{display:flex;flex-wrap:wrap;align-items:baseline;gap:10px;font-size:14px}
.foot-line__k{
  font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;
  color:var(--orange);text-transform:uppercase;flex:none;min-width:34px;
}
.foot-line__v{color:var(--mist);word-break:break-word}
.foot-line--wide{display:grid;grid-template-columns:auto 1fr;gap:10px}
.copy-btn{
  padding:3px 10px;border-radius:999px;
  border:1px solid var(--line);color:var(--soft);
  font-size:11.5px;letter-spacing:.08em;
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.copy-btn:hover{border-color:var(--cyan);color:var(--cyan);background:rgba(61,224,208,.1)}
.copy-btn[data-copied="true"]{border-color:var(--cyan);color:var(--cyan);background:rgba(61,224,208,.16)}
.copy-btn[data-copied="false"]{border-color:var(--orange);color:var(--orange)}

.footer-base{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:14px 24px;
  padding-block:18px 26px;
  border-top:1px solid var(--line);
  font-size:12.5px;letter-spacing:.04em;color:rgba(169,192,208,.8);
}
.footer-copy{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em}
.footer-legal{display:flex;flex-wrap:wrap;gap:18px}
.footer-legal a{color:rgba(169,192,208,.85);text-decoration:none;transition:color .2s var(--ease)}
.footer-legal a:hover{color:var(--cyan)}
.to-top{
  padding:8px 16px;border-radius:999px;
  border:1px solid var(--line);color:var(--soft);
  font-size:12.5px;letter-spacing:.08em;
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.to-top:hover{border-color:var(--cyan);color:var(--cyan)}
.to-top[data-visible="true"]{border-color:var(--line-strong);color:var(--cyan);background:rgba(61,224,208,.1)}

/* ---------- 14. 响应式 ---------- */
@media (max-width:1080px){
  .grid--split,.grid--split-rev{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .footer-contact{grid-column:1 / -1}
}

@media (max-width:860px){
  body{font-size:16px}
  .header-cta{display:none}
  .nav-toggle{display:inline-flex;position:fixed;right:16px;bottom:16px;z-index:95;
    background:var(--night);box-shadow:0 10px 30px rgba(0,0,0,.45)}
  .nav{
    position:fixed;left:12px;right:12px;bottom:80px;margin:0;z-index:90;
    max-height:min(70vh,520px);overflow:auto;
    padding:10px;border-radius:20px;
    background:rgba(14,42,66,.98);
    border:1px solid var(--line-strong);
    box-shadow:0 24px 60px rgba(0,0,0,.55);
    opacity:0;visibility:hidden;pointer-events:none;transform:translateY(12px);
    transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
  }
  .site-header[data-open="true"] .nav{
    opacity:1;visibility:visible;pointer-events:auto;transform:none;
  }
  .nav__list{flex-direction:column;align-items:stretch;gap:2px}
  .nav__list a{display:block;padding:13px 14px;border-radius:12px;font-size:16px}
  .nav__list a::after{display:none}
  .nav__list a[aria-current="page"]{background:rgba(61,224,208,.14);color:var(--white)}
  .site-footer{padding-bottom:88px}
  .topbar__axes{display:none}
}

@media (max-width:720px){
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-nav ul{grid-template-columns:minmax(0,1fr)}
  .footer-base{flex-direction:column;align-items:flex-start}
  .grid--split,.grid--split-rev{gap:20px}
}

@media (max-width:560px){
  .topbar{display:none}
  .topbar__coord{font-size:11.5px}
  .coord-mark{display:none}
  .section{padding-block:44px}
  .tabs__list{gap:6px;padding-bottom:10px}
  .tabs__tab{padding:8px 13px;font-size:13px}
  .archive-card{padding:16px}
}

/* ---------- 15. 降低动效偏好 ---------- */
@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{scroll-behavior:auto}
  .is-reveal-pending{opacity:1;transform:none}
  .nav{transition:none}
}