/* ============================================================
   K体育注册送68 — 共享样式 /assets/site.css
   母题：被擦亮的计分牌 · 纵向刻度轨道 · 框景舞台
   ============================================================ */

:root{
  --ink-deep:#081A29;
  --ink-polar:#0F2F43;
  --teal-deep:#0D4B4F;
  --indigo:#24234F;
  --wine:#5C1F2B;
  --cyan:#39F2CE;
  --amber:#FFB21C;
  --alert:#FF6A3D;
  --ice:#EEF6F8;
  --fog:#9DB4C6;
  --ink:#051018;

  --rail:96px;
  --head-h:60px;
  --gutter:clamp(20px,5vw,88px);
  --maxw:1180px;

  --font-title:"Barlow Condensed","Noto Sans SC","PingFang SC",system-ui,sans-serif;
  --font-body:"Noto Sans SC","Source Han Sans SC",system-ui,-apple-system,"PingFang SC","Microsoft YaHei",sans-serif;
  --font-mono:"IBM Plex Mono","Roboto Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --font-serif:"Noto Serif SC","Songti SC",Georgia,serif;

  --line:rgba(157,180,198,.2);
  --line-live:rgba(57,242,206,.38);
  --ease:cubic-bezier(.22,.61,.36,1);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,ul,ol,li,figure,blockquote,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
img,svg,video{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
table{border-collapse:collapse;width:100%}
:focus-visible{
  outline:3px solid var(--amber);
  outline-offset:2px;
  box-shadow:inset 0 0 0 2px var(--ink-deep);
}

/* ---------- base ---------- */
body{
  min-height:100vh;
  background-color:var(--ink-deep);
  background-image:
    linear-gradient(rgba(57,242,206,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(57,242,206,.035) 1px,transparent 1px);
  background-size:96px 96px,96px 96px;
  background-position:center top;
  color:var(--ice);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.008em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  padding-top:var(--head-h);
}
body.nav-locked{overflow:hidden}

h1,h2,h3,h4{
  font-family:var(--font-title);
  font-weight:700;
  line-height:1.12;
  letter-spacing:-.01em;
  color:var(--ice);
}
h1{font-size:clamp(2.6rem,6vw,5.2rem);line-height:1.02}
h2{font-size:clamp(1.7rem,3.2vw,2.6rem)}
h3{font-size:clamp(1.2rem,2vw,1.5rem)}
p{max-width:72ch}
strong{color:var(--ice);font-weight:700}

/* ---------- 通用容器与组件 ---------- */
.wrap{
  width:100%;
  max-width:var(--maxw);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.section{
  padding-block:clamp(40px,7vw,96px);
  position:relative;
}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.24em;
  text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:22px;height:1px;
  background:currentColor;
}
.display{
  font-family:var(--font-title);
  font-weight:700;
  font-size:clamp(2.6rem,6vw,5.2rem);
  line-height:1.02;
  letter-spacing:-.015em;
}
.lede{
  font-family:var(--font-serif);
  font-size:clamp(1.02rem,1.4vw,1.18rem);
  line-height:1.95;
  color:var(--fog);
  max-width:60ch;
}
.num{
  font-family:var(--font-mono);
  font-weight:700;
  font-variant-numeric:tabular-nums;
  letter-spacing:-.02em;
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:26px;
  padding:0 10px;
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--cyan);
  background:rgba(57,242,206,.1);
  border:1px solid var(--line-live);
}
.tag--alert{
  color:var(--alert);
  background:rgba(255,106,61,.12);
  border-color:rgba(255,106,61,.5);
}
.rule{
  height:1px;
  border:0;
  background:repeating-linear-gradient(90deg,var(--line-live) 0 14px,transparent 14px 26px);
  margin-block:clamp(20px,3vw,36px);
}
.panel{
  background:linear-gradient(160deg,var(--ink-polar) 0%,var(--teal-deep) 100%);
  border:1px solid var(--line);
  padding:clamp(20px,3vw,34px);
}
.panel--indigo{background:linear-gradient(160deg,var(--indigo) 0%,#17163A 100%)}
.panel--wine{background:linear-gradient(160deg,var(--wine) 0%,#3A121B 100%)}

/* 按钮 */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:48px;
  padding:0 22px;
  font-family:var(--font-title);
  font-size:17px;
  font-weight:700;
  letter-spacing:.06em;
  border:1px solid transparent;
  border-radius:0;
  transition:transform .18s var(--ease),background-color .18s var(--ease),
             border-color .18s var(--ease),color .18s var(--ease),
             box-shadow .18s var(--ease);
}
.btn--amber{
  background:var(--amber);
  color:var(--ink);
  border-color:#FFD068;
}
.btn--amber:hover{background:#FFC24A;transform:translateY(-2px);box-shadow:0 12px 26px rgba(255,178,28,.24)}
.btn--ghost{
  background:transparent;
  color:var(--ice);
  border-color:var(--line-live);
}
.btn--ghost:hover{color:var(--cyan);border-color:var(--cyan);transform:translateY(-2px)}

/* 面包屑 */
.crumbs{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.09em;
  color:var(--fog);
  padding-block:18px;
}
.crumbs li{display:inline-flex;align-items:center}
.crumbs li+li::before{
  content:"/";
  margin:0 10px;
  color:rgba(157,180,198,.45);
}
.crumbs a{color:var(--fog);border-bottom:1px solid transparent;transition:color .16s,border-color .16s}
.crumbs a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.crumbs [aria-current="page"]{color:var(--ice);font-weight:700}

/* 图片容器 */
.media{
  position:relative;
  width:100%;
  overflow:hidden;
  border:1px solid var(--line);
  background:
    linear-gradient(135deg,var(--ink-polar) 0%,var(--teal-deep) 52%,var(--ink-deep) 100%);
}
.media::after{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  opacity:.55;
  background:
    linear-gradient(90deg,rgba(57,242,206,.32) 0 1px,transparent 1px) 0 0/64px 100%,
    linear-gradient(0deg,rgba(57,242,206,.18) 0 1px,transparent 1px) 0 0/100% 64px;
}
.media > img,
.media > picture,
.media > svg{width:100%;height:100%;object-fit:cover;position:relative;z-index:1}
.media--wide{aspect-ratio:21/9}
.media--card{aspect-ratio:16/9}
.media--tall{aspect-ratio:3/4}

/* ============================================================
   头部外壳
   ============================================================ */
.site-head{
  position:fixed;
  top:0;left:0;right:0;
  height:var(--head-h);
  z-index:200;
  display:flex;
  align-items:center;
  gap:12px;
  padding:0 16px;
  background:rgba(8,26,41,.97);
  border-bottom:1px solid var(--line);
}

.skip-link{
  position:fixed;
  top:10px;left:10px;
  z-index:999;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 18px;
  background:var(--amber);
  color:var(--ink);
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  transform:translateY(-200%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:none}

/* 品牌 */
.brand{
  display:inline-flex;
  align-items:center;
  gap:10px;
  flex:0 0 auto;
}
.brand-mark{
  display:grid;
  place-items:center;
  width:34px;height:34px;
  font-family:var(--font-title);
  font-size:18px;
  font-weight:700;
  color:var(--cyan);
  border:1px solid var(--line-live);
  background:rgba(57,242,206,.08);
  letter-spacing:0;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.brand:hover .brand-mark{background:var(--cyan);color:var(--ink)}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{
  font-family:var(--font-title);
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--ice);
}
.brand-tag{
  font-family:var(--font-mono);
  font-size:9px;
  letter-spacing:.2em;
  color:var(--fog);
}

/* 导航（移动端默认：抽屉） */
.rail-nav{
  position:fixed;
  top:var(--head-h);
  right:0;
  bottom:0;
  width:min(86vw,350px);
  z-index:190;
  display:block;
  padding:22px 20px 110px;
  overflow-y:auto;
  background:linear-gradient(180deg,var(--ink-polar) 0%,#0A1F2F 100%);
  border-left:1px solid var(--line-live);
  box-shadow:-20px 0 44px rgba(0,0,0,.5);
  transform:translateX(103%);
  visibility:hidden;
  transition:transform .26s var(--ease),visibility .26s var(--ease);
}
.site-head[data-open="true"] .rail-nav{
  transform:none;
  visibility:visible;
}
.rail-list{
  display:flex;
  flex-direction:column;
  gap:0;
}
.rail-item{display:block}
.rail-link{
  display:flex;
  flex-direction:row;
  align-items:center;
  gap:14px;
  min-height:52px;
  padding:14px 6px;
  border-left:0;
  border-bottom:1px solid var(--line);
  color:var(--fog);
  transition:color .18s var(--ease),background-color .18s var(--ease),
             border-color .18s var(--ease),transform .18s var(--ease);
}
.rail-link:hover,
.rail-link:focus-visible{
  color:var(--ice);
  background:rgba(57,242,206,.07);
}
.rail-link[aria-current="page"]{
  color:var(--cyan);
  background:rgba(57,242,206,.1);
}
.rail-link[aria-current="page"] .rail-idx{color:var(--cyan)}
.rail-link[aria-current="page"] .rail-label{color:var(--cyan)}
.rail-idx{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  color:var(--fog);
  flex:0 0 auto;
}
.rail-label{
  font-family:var(--font-title);
  font-size:15px;
  font-weight:600;
  letter-spacing:.08em;
  line-height:1.3;
}
.region-badge{
  display:inline-block;
  margin-top:22px;
  padding:6px 10px;
  font-family:var(--font-mono);
  font-size:10px;
  font-weight:700;
  letter-spacing:.2em;
  color:var(--alert);
  background:rgba(255,106,61,.08);
  border:1px solid rgba(255,106,61,.42);
}

/* 菜单按钮 */
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  margin-left:auto;
  min-height:44px;
  min-width:44px;
  padding:0 12px;
  border:1px solid var(--line-live);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.18em;
  transition:background-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{background:rgba(57,242,206,.1)}
.nav-toggle-icon{
  display:flex;
  flex-direction:column;
  justify-content:center;
  gap:4px;
  width:18px;
  height:14px;
}
.nav-toggle-icon i{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform .2s var(--ease),opacity .2s var(--ease),width .2s var(--ease);
}
.nav-toggle-icon i:nth-child(2){width:70%}
.site-head[data-open="true"] .nav-toggle-icon i:nth-child(1){transform:translateY(6px) rotate(45deg)}
.site-head[data-open="true"] .nav-toggle-icon i:nth-child(2){opacity:0}
.site-head[data-open="true"] .nav-toggle-icon i:nth-child(3){transform:translateY(-6px) rotate(-45deg)}
.nav-toggle-text{white-space:nowrap}

/* 右下常驻排查入口 */
.float-entry{
  position:fixed;
  right:14px;
  bottom:14px;
  z-index:230;
  display:inline-flex;
  align-items:center;
  gap:9px;
  min-height:48px;
  padding:0 14px;
  background:var(--amber);
  color:var(--ink);
  font-family:var(--font-title);
  font-size:14px;
  font-weight:700;
  letter-spacing:.04em;
  border:1px solid #FFD068;
  border-bottom:3px solid var(--alert);
  box-shadow:0 12px 30px rgba(0,0,0,.5),0 0 0 1px rgba(5,16,24,.35);
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease);
}
.float-entry:hover{
  transform:translateY(-2px);
  background:#FFC24A;
  box-shadow:0 16px 34px rgba(255,178,28,.3),0 0 0 1px rgba(5,16,24,.35);
}
.float-entry-dot{
  width:8px;height:8px;
  border-radius:50%;
  background:var(--alert);
  box-shadow:0 0 0 3px rgba(255,106,61,.28);
  flex:0 0 auto;
}
.float-entry-text{white-space:nowrap}

/* 阅读进度 */
.scroll-meter{
  position:fixed;
  top:0;left:0;right:0;
  height:3px;
  z-index:240;
  pointer-events:none;
  background:rgba(57,242,206,.1);
}
.scroll-meter-fill{
  display:block;
  height:100%;
  width:100%;
  transform-origin:0 50%;
  transform:scaleX(var(--scroll,0));
  background:linear-gradient(90deg,var(--cyan) 0%,var(--cyan) 62%,var(--amber) 100%);
}

/* ============================================================
   页脚
   ============================================================ */
.site-foot{
  position:relative;
  margin-top:clamp(40px,7vw,90px);
  background:linear-gradient(180deg,#1C1B40 0%,var(--indigo) 44%,#131230 100%);
  border-top:1px solid var(--line-live);
}
.site-foot::before{
  content:"";
  position:absolute;
  top:0;left:0;right:0;
  height:6px;
  background:repeating-linear-gradient(90deg,rgba(57,242,206,.55) 0 2px,transparent 2px 18px);
  pointer-events:none;
}
.foot-grid{
  display:grid;
  grid-template-columns:1fr;
  gap:32px;
  max-width:1440px;
  margin-inline:auto;
  padding:clamp(38px,6vw,72px) var(--gutter) clamp(26px,4vw,44px);
}
.foot-brand{display:flex;flex-direction:column;gap:10px}
.foot-logo{
  font-family:var(--font-title);
  font-size:clamp(1.5rem,2.4vw,1.9rem);
  font-weight:700;
  letter-spacing:.01em;
  color:var(--ice);
  border-bottom:1px solid transparent;
  align-self:flex-start;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.foot-logo:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.foot-tagline{
  font-family:var(--font-mono);
  font-size:10px;
  font-weight:700;
  letter-spacing:.26em;
  text-transform:uppercase;
  color:var(--cyan);
}
.foot-line{
  font-family:var(--font-serif);
  font-size:14px;
  line-height:1.9;
  color:var(--fog);
  max-width:34ch;
}
.foot-region{
  display:inline-flex;
  align-items:center;
  gap:8px;
  align-self:flex-start;
  margin-top:4px;
  padding:5px 10px;
  font-family:var(--font-mono);
  font-size:10px;
  font-weight:700;
  letter-spacing:.18em;
  color:var(--alert);
  border:1px solid rgba(255,106,61,.42);
  background:rgba(255,106,61,.08);
}
.foot-region-dot{
  width:6px;height:6px;
  border-radius:50%;
  background:var(--alert);
}
.foot-col{display:flex;flex-direction:column;gap:14px}
.foot-col--contact{min-width:0}
.foot-title{
  font-family:var(--font-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--ice);
  padding-bottom:10px;
  border-bottom:1px solid rgba(57,242,206,.28);
}
.foot-list{display:flex;flex-direction:column;gap:10px}
.foot-list--plain{gap:12px}
.foot-list--plain li{
  display:flex;
  flex-direction:column;
  gap:2px;
  min-width:0;
}
.foot-link{
  display:inline-block;
  font-size:14px;
  line-height:1.6;
  color:var(--fog);
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease);
}
.foot-link:hover,
.foot-link:focus-visible{
  color:var(--cyan);
  border-bottom-color:var(--cyan);
  transform:translateY(-1px);
}
.foot-key{
  font-family:var(--font-mono);
  font-size:10px;
  font-weight:700;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:rgba(157,180,198,.75);
}
.foot-val{
  font-size:13.5px;
  line-height:1.7;
  color:var(--ice);
  word-break:break-word;
}
.foot-base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 24px;
  max-width:1440px;
  margin-inline:auto;
  padding:18px var(--gutter) 30px;
  border-top:1px solid rgba(157,180,198,.18);
}
.foot-copy,
.foot-icp{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.08em;
  color:var(--fog);
}
.foot-icp{color:var(--ice)}
.foot-note{
  flex:1 1 320px;
  font-size:12px;
  line-height:1.7;
  color:rgba(157,180,198,.82);
  max-width:60ch;
}

/* ============================================================
   响应式
   ============================================================ */
@media (min-width:600px){
  .site-head{padding:0 24px;gap:16px}
  .float-entry{right:22px;bottom:22px;padding:0 20px;font-size:15px}
}
@media (min-width:768px){
  .foot-grid{grid-template-columns:1fr 1fr;gap:36px 40px}
  .foot-brand{grid-column:1 / -1}
  .media--wide{aspect-ratio:21/9}
}
@media (min-width:900px){
  body{padding-top:0;padding-left:var(--rail)}

  .site-head{
    top:0;left:0;bottom:0;right:auto;
    width:var(--rail);
    height:auto;
    flex-direction:column;
    align-items:center;
    gap:0;
    padding:16px 0 18px;
    background:linear-gradient(180deg,#0A2131 0%,var(--ink-deep) 52%,#0E2A3B 100%);
    border-bottom:0;
    border-right:1px solid var(--line);
    overflow-y:auto;
    overflow-x:hidden;
    scrollbar-width:none;
  }
  .site-head::-webkit-scrollbar{display:none}

  .brand{flex-direction:column;gap:0}
  .brand-mark{
    width:46px;height:46px;
    font-size:24px;
  }
  .brand-text{display:none}

  .nav-toggle{display:none}

  .rail-nav{
    position:static;
    width:100%;
    flex:1 1 auto;
    display:flex;
    flex-direction:column;
    align-items:center;
    justify-content:center;
    gap:16px;
    padding:18px 0 8px;
    transform:none;
    visibility:visible;
    background:none;
    border-left:0;
    box-shadow:none;
    overflow:visible;
  }
  .rail-list{
    width:100%;
    flex-direction:column;
    align-items:center;
    gap:14px;
  }
  .rail-link{
    flex-direction:column;
    align-items:center;
    gap:7px;
    min-height:0;
    padding:8px 4px;
    border-bottom:0;
    border-left:2px solid transparent;
    width:100%;
  }
  .rail-link:hover,
  .rail-link:focus-visible{
    background:rgba(57,242,206,.08);
  }
  .rail-link[aria-current="page"]{
    border-left-color:var(--cyan);
    background:rgba(57,242,206,.1);
  }
  .rail-idx{font-size:10px;letter-spacing:.06em}
  .rail-label{
    writing-mode:vertical-rl;
    font-size:11px;
    line-height:1.3;
    letter-spacing:.14em;
    max-height:4.6em;
    text-align:center;
  }
  .region-badge{
    margin-top:0;
    padding:9px 3px;
    writing-mode:vertical-rl;
    font-size:9px;
    letter-spacing:.24em;
    text-align:center;
  }

  .float-entry{right:26px;bottom:26px}

  .scroll-meter{
    top:0;left:0;right:auto;
    width:3px;height:auto;
    bottom:0;
  }
  .scroll-meter-fill{
    width:100%;
    height:100%;
    transform-origin:50% 0;
    transform:scaleY(var(--scroll,0));
    background:linear-gradient(180deg,var(--cyan) 0%,var(--cyan) 62%,var(--amber) 100%);
  }

  .foot-grid{grid-template-columns:1.5fr 1fr 1fr 1.6fr;gap:clamp(24px,3.4vw,54px)}
  .foot-brand{grid-column:auto}
}
@media (min-width:1200px){
  .rail-label{font-size:11.5px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .btn:hover,
  .float-entry:hover,
  .rail-link:hover,
  .foot-link:hover{transform:none}
  .scroll-meter-fill{transition:none}
}