/* ============================================================
   MANBET登录 — 共享样式表 /assets/site.css
   深空蓝基底 · 电光青 + 熔岩橙强调 · 编辑部非对称版式
   ============================================================ */

/* ---------- 1. 设计令牌 ---------- */
:root{
  --deep:#0B1B3A;
  --deep-2:#12244A;
  --graphite:#060D1A;
  --cyan:#00E5FF;
  --cyan-soft:rgba(0,229,255,.12);
  --cyan-line:rgba(0,229,255,.26);
  --orange:#FF6B35;
  --orange-soft:rgba(255,107,53,.14);
  --silver:#C0C7D1;
  --white:#F4F7FB;
  --green:#2ED47A;
  --amber:#FFB020;
  --line-soft:rgba(192,199,209,.18);
  --ink:#04121f;

  --shadow-cyan:8px 8px 0 rgba(0,229,255,.16);
  --shadow-orange:8px 8px 0 rgba(255,107,53,.18);

  --wrap:1240px;
  --gutter:clamp(18px,4vw,40px);
  --header-h:74px;

  --font-sans:"Inter","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  --font-mono:ui-monospace,"SFMono-Regular","JetBrains Mono",Consolas,"Courier New",monospace;
  --font-serif:Georgia,"Songti SC","Noto Serif SC","Times New Roman",serif;
}

/* ---------- 2. 基础重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background-color:var(--deep);
  color:var(--silver);
  font-family:var(--font-sans);
  font-size:16.5px;
  line-height:1.7;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,h6,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{list-style:none;padding:0}
img,svg,video{max-width:100%;display:block}
button,input,select,textarea{font:inherit;color:inherit}
::selection{background:var(--cyan);color:var(--ink)}

/* 背景：几何网格 + 缓慢横移光轨（装饰层，永在内容之下） */
body::before{
  content:"";position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    linear-gradient(rgba(0,229,255,.055) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,229,255,.055) 1px,transparent 1px);
  background-size:96px 96px;
  background-position:center top;
}
body::after{
  content:"";position:fixed;left:-20%;top:44%;width:140%;height:1px;z-index:-1;pointer-events:none;
  background:linear-gradient(90deg,transparent,rgba(0,229,255,.42),rgba(255,107,53,.26),transparent);
  animation:beam-drift 16s ease-in-out infinite alternate;
}
@keyframes beam-drift{
  from{transform:translate3d(-6%,0,0)}
  to{transform:translate3d(6%,0,0)}
}

/* ---------- 3. 中文排版 ---------- */
h1,h2,h3,h4,h5,h6{
  color:var(--white);
  font-weight:800;
  letter-spacing:-.02em;
  line-height:1.16;
  margin:0 0 .55em;
}
h1{font-size:clamp(2rem,5.2vw,3.5rem);line-height:1.08}
h2{font-size:clamp(1.5rem,3.4vw,2.25rem)}
h3{font-size:clamp(1.15rem,2vw,1.42rem)}
h4{font-size:1.05rem;letter-spacing:0}
p{margin:0 0 1em}
a{color:var(--cyan);text-decoration-thickness:1px;text-underline-offset:3px}
strong{color:var(--white);font-weight:700}
small{font-size:.82em}
hr{border:0;border-top:1px solid var(--line-soft);margin:2em 0}
blockquote{
  margin:1.6em 0;padding:14px 0 14px 20px;
  border-left:3px solid var(--cyan);
  font-family:var(--font-serif);font-size:1.08rem;color:var(--white);
}
.mono{font-family:var(--font-mono);font-size:.86em;letter-spacing:.04em}
.lede{font-size:clamp(1.05rem,1.7vw,1.2rem);line-height:1.75;max-width:62ch;color:var(--silver)}
.measure{max-width:68ch}
.list-disc{list-style:disc;padding-left:1.25em;margin:0 0 1em}
.list-disc li{margin-bottom:.35em}
.list-num{list-style:decimal;padding-left:1.4em;margin:0 0 1em}
.list-num li{margin-bottom:.35em}

/* ---------- 4. 布局容器与网格 ---------- */
.container{width:100%;max-width:var(--wrap);margin:0 auto;padding:0 var(--gutter)}
.section{position:relative;padding:clamp(44px,6vw,84px) 0}
main{position:relative;z-index:1}
.section__head{
  display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:14px 24px;padding-bottom:14px;margin-bottom:clamp(22px,3vw,36px);
  border-bottom:1px solid var(--line-soft);
}
.section__head h2,.section__head h3{margin:0}
.kicker{
  display:inline-flex;align-items:center;gap:9px;
  margin:0 0 12px;font-family:var(--font-mono);font-size:12px;
  letter-spacing:.18em;text-transform:uppercase;color:var(--cyan);
}
.kicker::before{content:"";width:22px;height:2px;background:var(--orange);flex:none}
.slash{
  height:3px;border:0;margin:0;
  background:linear-gradient(90deg,var(--cyan),rgba(0,229,255,.06) 55%,var(--orange));
}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--aside{grid-template-columns:minmax(0,1fr) minmax(0,320px);align-items:start}

/* ---------- 5. 通用组件 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 22px;font-size:15px;font-weight:700;letter-spacing:.01em;
  color:var(--white);background:transparent;border:2px solid var(--cyan);
  text-decoration:none;cursor:pointer;
  transition:transform .18s ease,box-shadow .18s ease,background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:6px 6px 0 rgba(0,229,255,.32)}
.btn--primary{background:var(--cyan);color:var(--ink);border-color:var(--cyan)}
.btn--primary:hover{box-shadow:6px 6px 0 rgba(255,107,53,.5)}
.btn--ghost{border-color:var(--line-soft);color:var(--white)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan);box-shadow:6px 6px 0 rgba(0,229,255,.18)}
.btn--accent{border-color:var(--orange);color:var(--orange)}
.btn--accent:hover{background:var(--orange);color:var(--ink);box-shadow:6px 6px 0 rgba(255,107,53,.28)}
.btn-row{display:flex;flex-wrap:wrap;gap:12px;margin:22px 0 0}

.tag{
  display:inline-block;padding:3px 9px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;
  color:var(--cyan);background:var(--cyan-soft);border:1px solid var(--cyan-line);
}
.tag--orange{color:var(--orange);background:var(--orange-soft);border-color:rgba(255,107,53,.45)}
.tag--muted{color:var(--silver);background:transparent;border-color:var(--line-soft)}
.tag--ok{color:var(--green);background:rgba(46,212,122,.12);border-color:rgba(46,212,122,.4)}
.tag--warn{color:var(--amber);background:rgba(255,176,32,.12);border-color:rgba(255,176,32,.4)}

.card{
  position:relative;
  padding:clamp(20px,2.6vw,30px);
  background:var(--deep-2);
  border:2px solid var(--line-soft);
  transition:transform .2s ease,box-shadow .2s ease,border-color .2s ease;
}
.card:hover,.card:focus-within{
  transform:translateY(-4px);
  border-color:var(--cyan);
  box-shadow:var(--shadow-cyan);
}
.card--accent{border-color:rgba(255,107,53,.38)}
.card--accent:hover,.card--accent:focus-within{border-color:var(--orange);box-shadow:var(--shadow-orange)}
.card h3,.card h4{margin-top:0}
.card p:last-child{margin-bottom:0}

.breadcrumbs{
  display:flex;flex-wrap:wrap;align-items:center;gap:0 8px;
  padding:16px 0 0;margin:0;list-style:none;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.06em;color:var(--silver);
}
.breadcrumbs li{display:inline-flex;align-items:center}
.breadcrumbs li::after{content:"/";margin-left:8px;color:rgba(192,199,209,.38)}
.breadcrumbs li:last-child::after{content:""}
.breadcrumbs a{color:var(--silver);text-decoration:none;border-bottom:1px solid transparent}
.breadcrumbs a:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

/* 通用响应式图片容器（页面阶段放置 <img> 或内联 SVG） */
.media{
  position:relative;overflow:hidden;
  border:2px solid var(--line-soft);
  background:var(--deep-2);
}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--tall{aspect-ratio:3/4}
.media--wide{aspect-ratio:21/9}
.media__img{width:100%;height:100%;object-fit:cover;display:block}
.media__grid{
  position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(0,229,255,.13) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,229,255,.13) 1px,transparent 1px);
  background-size:34px 34px;
}
.media__cap{
  position:absolute;left:0;right:0;bottom:0;padding:10px 14px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:var(--white);
  background:linear-gradient(180deg,transparent,rgba(6,13,26,.9));
}

/* ---------- 6. 页头（视觉边框的一部分） ---------- */
.skip-link{
  position:absolute;top:-120px;left:16px;z-index:200;
  padding:10px 18px;background:var(--cyan);color:var(--ink);
  font-weight:700;font-size:14px;text-decoration:none;border:2px solid var(--graphite);
  transition:top .18s ease;
}
.skip-link:focus{top:12px}

.site-header{
  position:sticky;top:0;z-index:60;
  background-color:var(--deep);
  border-bottom:1px solid var(--cyan-line);
}
.site-header::after{
  content:"";position:absolute;left:0;right:0;bottom:-1px;height:2px;pointer-events:none;
  background:linear-gradient(90deg,var(--cyan),rgba(0,229,255,0) 40%,rgba(255,107,53,0) 60%,var(--orange));
  opacity:.8;
}
.site-header__inner{
  display:flex;align-items:center;gap:clamp(12px,2vw,28px);
  width:100%;max-width:var(--wrap);
  min-height:var(--header-h);
  margin:0 auto;padding:0 var(--gutter);
}
.scroll-progress{
  position:fixed;top:0;left:0;width:100%;height:3px;z-index:80;pointer-events:none;
  transform:scaleX(var(--progress,0));transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
}

.brand{display:inline-flex;align-items:center;gap:10px;flex:none;text-decoration:none;color:var(--white)}
.brand__mark{
  position:relative;width:22px;height:22px;flex:none;
  border:2px solid var(--cyan);transform:rotate(45deg);
  transition:border-color .2s ease,transform .2s ease;
}
.brand__mark::after{content:"";position:absolute;inset:5px;background:var(--orange)}
.brand:hover .brand__mark{border-color:var(--orange);transform:rotate(45deg) scale(1.06)}
.brand__name{font-size:17px;font-weight:800;letter-spacing:-.02em;color:var(--white);white-space:nowrap}
.brand__ver{
  padding:2px 6px;font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;
  color:var(--cyan);border:1px solid var(--cyan-line);background:var(--cyan-soft);
}

.site-nav{margin-left:auto}
.site-nav__list{display:flex;align-items:center;gap:2px;margin:0;padding:0;list-style:none}
.site-nav__item{position:relative}
.site-nav__link{
  display:inline-flex;align-items:center;gap:8px;
  padding:9px 12px;
  font-size:14.5px;font-weight:700;letter-spacing:.01em;white-space:nowrap;
  color:var(--silver);text-decoration:none;
  background:transparent;border-bottom:2px solid transparent;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.site-nav__link:hover{color:var(--white);border-bottom-color:rgba(0,229,255,.5)}
.site-nav__link.is-lead{color:var(--white)}
.site-nav__link.is-lead::before{
  content:"";width:7px;height:7px;flex:none;
  background:var(--orange);transform:rotate(45deg);
}
.site-nav__link[aria-current="page"]{
  color:var(--cyan);
  border-bottom-color:var(--cyan);
  background:var(--cyan-soft);
}

.nav-tools{display:flex;align-items:center;gap:10px;flex:none;margin-left:clamp(8px,1.4vw,20px)}
.nav-tools__link{
  padding:8px 11px;
  font-family:var(--font-mono);font-size:12px;letter-spacing:.08em;
  color:var(--silver);text-decoration:none;
  border:1px solid var(--line-soft);
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.nav-tools__link:hover{color:var(--cyan);border-color:var(--cyan);background:var(--cyan-soft)}
.nav-tools__cta{
  display:inline-flex;align-items:center;
  padding:10px 16px;font-size:14px;font-weight:800;text-decoration:none;
  color:var(--ink);background:var(--cyan);border:2px solid var(--cyan);
  transition:transform .18s ease,box-shadow .18s ease;
}
.nav-tools__cta:hover{transform:translate(-2px,-2px);box-shadow:5px 5px 0 rgba(255,107,53,.55)}

.nav-toggle{
  display:none;align-items:center;gap:9px;
  padding:9px 13px;background:transparent;
  border:2px solid var(--line-soft);color:var(--white);
  font-size:13px;font-weight:700;cursor:pointer;
  transition:border-color .18s ease,color .18s ease,background-color .18s ease;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan)}
.nav-toggle[aria-expanded="true"]{border-color:var(--cyan);color:var(--cyan);background:var(--cyan-soft)}
.nav-toggle__bars{position:relative;width:18px;height:2px;background:currentColor;flex:none}
.nav-toggle__bars::before,
.nav-toggle__bars::after{content:"";position:absolute;left:0;width:18px;height:2px;background:currentColor;transition:transform .2s ease,top .2s ease}
.nav-toggle__bars::before{top:-6px}
.nav-toggle__bars::after{top:6px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars{background:transparent}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:0;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:0;transform:rotate(-45deg)}
.nav-toggle__text{letter-spacing:.04em}
body.nav-open{overflow:hidden}

/* ---------- 7. 页脚 ---------- */
.site-footer{
  position:relative;z-index:1;
  background-color:var(--graphite);
  color:var(--silver);
  border-top:1px solid var(--cyan-line);
}
.site-footer::before{
  content:"";display:block;height:4px;
  background:linear-gradient(90deg,var(--cyan),rgba(0,229,255,.14) 42%,rgba(255,107,53,.28) 70%,var(--orange));
}
.footer__top{
  display:flex;flex-wrap:wrap;align-items:center;gap:12px 18px;
  padding:34px 0 22px;border-bottom:1px solid var(--line-soft);
}
.footer__brand{font-size:clamp(20px,2.6vw,24px);font-weight:800;letter-spacing:-.02em;color:var(--white)}
.footer__ver{
  padding:3px 8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;
  color:var(--cyan);border:1px solid var(--cyan-line);background:var(--cyan-soft);
}
.footer__cta{margin-left:auto}

.footer__grid{
  display:grid;grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(20px,3vw,44px);
  padding:34px 0 28px;
}
.footer__col{min-width:0}
.footer__title{
  margin:0 0 14px;
  font-family:var(--font-mono);font-size:12px;font-weight:700;
  letter-spacing:.16em;text-transform:uppercase;color:var(--white);
}
.footer__list{display:flex;flex-direction:column;gap:9px;margin:0;padding:0;list-style:none;font-size:14.5px}
.footer__link{
  color:var(--silver);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .18s ease,border-color .18s ease;
}
.footer__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}
.footer__list--meta{gap:12px}
.footer__list--meta li{display:flex;flex-wrap:wrap;align-items:baseline;gap:8px}
.footer__label{
  flex:none;min-width:42px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.1em;color:var(--cyan);
}
.footer__value{font-size:14px;color:var(--silver);word-break:break-word}
.footer__note{margin:14px 0 0;font-size:12.5px;line-height:1.65;color:rgba(192,199,209,.72)}

.footer__bar{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;
  gap:10px 26px;padding:20px 0 34px;border-top:1px solid var(--line-soft);
}
.footer__scope,.footer__legal{margin:0;font-size:12.5px;color:rgba(192,199,209,.8)}
.footer__legal{font-family:var(--font-mono);letter-spacing:.04em}

/* ---------- 8. 动效与显现 ---------- */
[data-reveal]{
  opacity:0;transform:translateY(16px);
  transition:opacity .6s ease,transform .6s ease;
  will-change:opacity,transform;
}
[data-reveal].is-visible{opacity:1;transform:none}

/* ---------- 9. 焦点可见性 ---------- */
:focus-visible{outline:3px solid var(--cyan);outline-offset:2px}
.btn:focus-visible,.nav-tools__cta:focus-visible,.nav-toggle:focus-visible{outline-offset:3px}

/* ---------- 10. 响应式 ---------- */
@media (max-width:1180px){
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:1024px){
  .footer__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .grid--aside{grid-template-columns:minmax(0,1fr)}
}
@media (max-width:900px){
  :root{--header-h:66px}
  .nav-tools__link,.nav-tools__cta{display:none}
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:fixed;top:var(--header-h);right:0;bottom:0;
    width:min(85vw,340px);margin-left:0;
    padding:22px 20px 48px;
    background-color:var(--graphite);
    border-left:1px solid var(--cyan-line);
    overflow-y:auto;z-index:70;
    transform:translateX(103%);
    transition:transform .3s cubic-bezier(.2,.7,.3,1);
  }
  .site-nav[data-open="true"]{transform:none;box-shadow:-18px 0 46px rgba(4,12,26,.72)}
  .site-nav__list{flex-direction:column;align-items:stretch;gap:0}
  .site-nav__item{width:100%}
  .site-nav__link{
    display:flex;width:100%;
    padding:14px 8px;font-size:17px;
    border-left:2px solid transparent;
    border-bottom:1px solid var(--line-soft);
  }
  .site-nav__link:hover{border-left-color:rgba(0,229,255,.5);border-bottom-color:var(--line-soft)}
  .site-nav__link[aria-current="page"]{
    border-left-color:var(--cyan);
    border-bottom-color:var(--line-soft);
    background:var(--cyan-soft);
  }
  .grid--2{grid-template-columns:minmax(0,1fr)}
  .footer__cta{width:100%;justify-content:center}
}
@media (max-width:720px){
  body{font-size:16px}
  .grid--3{grid-template-columns:minmax(0,1fr)}
  .section__head{align-items:flex-start}
  .btn{width:100%}
  .btn-row{gap:10px}
}
@media (max-width:620px){
  .footer__grid{grid-template-columns:minmax(0,1fr);gap:28px}
  .footer__bar{flex-direction:column;align-items:flex-start}
  .brand__name{font-size:16px}
}

/* ---------- 11. 降低动态效果 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  body::after{animation:none}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  [data-reveal]{opacity:1 !important;transform:none !important}
}