/* ===========================================================
   365网站网 — 共享样式表  /assets/site.css
   深夜控制台视觉体系：深海蓝底 + 荧光青强调 + 暖橙标注
   =========================================================== */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body,h1,h2,h3,h4,h5,p,ul,ol,li,figure,figcaption,blockquote,dl,dt,dd{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video,canvas{display:block;max-width:100%}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}

/* ---------- 2. 设计令牌 ---------- */
:root{
  --deep:#06213F;
  --layer:#0B2E52;
  --console:#123C63;
  --cyan:#22E0D6;
  --cyan-soft:#7BF2EC;
  --orange:#FF8A3D;
  --amber:#FFC466;
  --mist:#9FB6C9;
  --paper:#E8F1F7;
  --glass:rgba(19,60,99,.55);

  --line:rgba(34,224,214,.14);
  --line-mid:rgba(34,224,214,.26);
  --line-strong:rgba(34,224,214,.46);

  --font-sans:system-ui,-apple-system,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --font-display:"Helvetica Neue","Arial Narrow",system-ui,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
  --font-mono:ui-monospace,SFMono-Regular,Menlo,Consolas,"Liberation Mono","Courier New",monospace;

  --shell:1320px;
  --gutter:clamp(16px,3.6vw,40px);
  --rail:0px;
  --radius:4px;
  --radius-lg:10px;
  --ease:cubic-bezier(.2,.7,.25,1);
  --shadow:0 18px 44px rgba(0,0,0,.34);
}
@media (min-width:1120px){:root{--rail:88px}}

:focus-visible{outline:2px solid var(--cyan);outline-offset:2px;border-radius:3px}

/* ---------- 3. 基础排版 ---------- */
body{
  position:relative;
  min-height:100vh;
  overflow-x:hidden;
  background-color:var(--deep);
  background-image:
    radial-gradient(1100px 520px at 76% -8%,rgba(34,224,214,.10),transparent 62%),
    radial-gradient(820px 480px at 4% 3%,rgba(255,138,61,.07),transparent 64%);
  background-repeat:no-repeat;
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.75;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:800;
  line-height:1.08;
  letter-spacing:-.02em;
  font-stretch:condensed;
  text-wrap:balance;
}
h1{font-size:clamp(38px,7vw,96px);font-weight:900}
h2{font-size:clamp(26px,4vw,44px)}
h3{font-size:clamp(19px,2.4vw,28px)}
h4{font-size:20px;font-weight:700}

p{max-width:34em}
.mono,.num{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:500;
  letter-spacing:.04em;
}
.u-mist{color:var(--mist)}
.u-sr-only{
  position:absolute;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0;
}
#main-content{scroll-margin-top:20px}

/* ---------- 4. 布局容器与栅格 ---------- */
.shell{
  width:100%;
  max-width:var(--shell);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.grid{display:grid;gap:clamp(16px,2.4vw,28px)}
.grid--12{grid-template-columns:minmax(0,1fr)}
@media (min-width:900px){
  .grid--12{grid-template-columns:repeat(12,minmax(0,1fr))}
  .grid--12 > .span-3{grid-column:span 3}
  .grid--12 > .span-4{grid-column:span 4}
  .grid--12 > .span-5{grid-column:span 5}
  .grid--12 > .span-6{grid-column:span 6}
  .grid--12 > .span-7{grid-column:span 7}
  .grid--12 > .span-8{grid-column:span 8}
  .grid--12 > .span-9{grid-column:span 9}
  .grid--12 > .span-12{grid-column:span 12}
}
.section{padding-block:clamp(36px,6vw,72px)}
.section--tight{padding-block:clamp(22px,3.6vw,44px)}
.section__head{
  display:grid;
  gap:14px;
  margin-bottom:clamp(20px,3vw,36px);
}
@media (min-width:900px){
  .section__head{grid-template-columns:minmax(0,7fr) minmax(0,5fr);align-items:end}
}
.section__title{font-size:clamp(26px,3.6vw,44px)}
.section__lede{color:var(--mist);font-size:15px;line-height:1.7}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:9px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.16em;
  color:var(--cyan);
}
.eyebrow::before{content:"";width:22px;height:1px;background:var(--cyan);flex:none}

/* ---------- 5. 跳转链接 ---------- */
.skip-link{
  position:fixed;
  left:var(--gutter);
  top:-90px;
  z-index:200;
  padding:10px 18px;
  background:var(--cyan);
  color:var(--deep);
  font-size:14px;
  font-weight:700;
  border-radius:0 0 var(--radius) var(--radius);
  transition:top .2s var(--ease);
}
.skip-link:focus{top:0}

/* ---------- 6. 头部框架 ---------- */
.site-header{
  position:relative;
  z-index:60;
  background:var(--deep);
}

/* 6.1 版本工具条 */
.utility-strip{
  background:var(--layer);
  border-bottom:1px solid var(--line);
  font-size:12px;
  line-height:1.6;
}
.utility-strip__inner{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:6px clamp(14px,2.4vw,30px);
  min-height:38px;
  padding-block:7px;
}
.utility-strip__list{
  display:flex;
  flex-wrap:wrap;
  gap:6px clamp(14px,2.4vw,30px);
  color:var(--mist);
}
.utility-strip__item{
  display:inline-flex;
  align-items:center;
  gap:7px;
  white-space:nowrap;
}
.utility-strip__item .mono{color:var(--cyan-soft);font-size:12px}
.utility-strip__item--version .mono{color:var(--orange)}
.utility-strip__spacer{margin-left:auto}
.utility-strip__link{
  color:var(--mist);
  padding-bottom:1px;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.utility-strip__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

/* 6.2 品牌横条 */
.masthead{
  background:var(--deep);
  border-bottom:1px solid var(--line);
}
.masthead__inner{
  display:flex;
  align-items:center;
  gap:16px;
  padding-block:clamp(12px,1.8vw,20px);
}
.brand{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:0;
}
.brand__mark{
  flex:none;
  display:inline-block;
  padding:7px 9px;
  border-radius:var(--radius);
  background:var(--cyan);
  color:var(--deep);
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.08em;
  line-height:1;
}
.brand__text{display:flex;flex-direction:column;min-width:0}
.brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-stretch:condensed;
  font-size:clamp(20px,2.4vw,26px);
  line-height:1.1;
  letter-spacing:-.01em;
}
.brand__tagline{
  font-size:12px;
  color:var(--mist);
  letter-spacing:.05em;
  margin-top:3px;
  white-space:nowrap;
}
.masthead__actions{
  display:flex;
  align-items:center;
  gap:10px;
  margin-left:auto;
}

/* 6.3 栏目条 */
.site-nav{
  background:var(--console);
  border-bottom:1px solid var(--line-mid);
}
.site-nav__inner{
  display:flex;
  align-items:center;
  gap:clamp(12px,2.6vw,30px);
  min-height:54px;
}
.site-nav__list{
  display:flex;
  align-items:center;
  flex-wrap:wrap;
  gap:clamp(2px,1.4vw,18px);
}
.site-nav__link{
  display:block;
  padding:8px 4px 6px;
  font-size:15px;
  font-weight:600;
  color:var(--mist);
  border-bottom:2px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.site-nav__link:hover{color:var(--paper)}
.site-nav__link[aria-current="page"]{
  color:var(--cyan);
  border-bottom-color:var(--cyan);
}
.site-nav__meta{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  color:var(--mist);
  white-space:nowrap;
}

/* 6.4 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  margin-left:auto;
  padding:9px 13px;
  border:1px solid var(--line-mid);
  border-radius:var(--radius);
  color:var(--paper);
  font-size:13px;
  font-weight:600;
  transition:border-color .18s var(--ease),color .18s var(--ease);
}
.nav-toggle:hover{border-color:var(--line-strong);color:var(--cyan)}
.nav-toggle__bars{
  position:relative;
  width:16px;
  height:9px;
  flex:none;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after{
  content:"";
  position:absolute;
  left:0;right:0;
  height:1.5px;
  background:var(--cyan);
  transition:transform .22s var(--ease),top .22s var(--ease);
}
.nav-toggle__bars::before{top:0}
.nav-toggle__bars::after{top:7px}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before{top:3.5px;transform:rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after{top:3.5px;transform:rotate(-45deg)}
.nav-toggle__label{white-space:nowrap}

/* ---------- 7. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 20px;
  border-radius:var(--radius);
  border:1px solid transparent;
  font-size:14px;
  font-weight:600;
  line-height:1.2;
  white-space:nowrap;
  transition:background-color .18s var(--ease),color .18s var(--ease),
             border-color .18s var(--ease),transform .18s var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn--solid{background:var(--cyan);color:var(--deep)}
.btn--solid:hover{background:var(--cyan-soft)}
.btn--ghost{background:transparent;color:var(--paper);border-color:var(--line-mid)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--orange{background:var(--orange);color:#31150A}
.btn--orange:hover{background:var(--amber)}
.btn--sm{padding:8px 14px;font-size:13px}

/* ---------- 8. 面包屑 ---------- */
.breadcrumb{
  padding-top:clamp(16px,2.4vw,26px);
  font-size:13px;
  color:var(--mist);
}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:4px 10px;
}
.breadcrumb__item{display:inline-flex;align-items:center;gap:10px}
.breadcrumb__item + .breadcrumb__item::before{
  content:"›";
  color:var(--line-strong);
  font-size:14px;
}
.breadcrumb__link{color:var(--paper);transition:color .18s var(--ease)}
.breadcrumb__link:hover{color:var(--cyan)}
.breadcrumb__current{color:var(--mist)}

/* ---------- 9. 面板 / 数据 / 标签 ---------- */
.panel{
  background:var(--layer);
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  padding:clamp(18px,2.4vw,28px);
}
.panel--glass{
  background:var(--glass);
  border-color:var(--line-mid);
  -webkit-backdrop-filter:blur(12px) saturate(130%);
  backdrop-filter:blur(12px) saturate(130%);
}
.panel--accent{
  border-color:var(--line-strong);
  box-shadow:inset 0 0 0 1px rgba(34,224,214,.07);
}

.stat{display:flex;flex-direction:column;gap:5px}
.stat__value{
  font-family:var(--font-mono);
  font-variant-numeric:tabular-nums;
  font-weight:600;
  font-size:clamp(24px,3vw,34px);
  line-height:1;
  color:var(--cyan);
  letter-spacing:.02em;
}
.stat__label{font-size:12.5px;color:var(--mist);letter-spacing:.04em}
.stat--warm .stat__value{color:var(--orange)}

.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 10px;
  border-radius:999px;
  border:1px solid var(--line-mid);
  background:rgba(34,224,214,.08);
  color:var(--cyan-soft);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.05em;
  line-height:1.6;
}
.tag--warm{
  border-color:rgba(255,138,61,.42);
  background:rgba(255,138,61,.10);
  color:var(--orange);
}
.tag--muted{
  border-color:var(--line);
  background:transparent;
  color:var(--mist);
}

/* ---------- 10. 主题筛选 ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  border-radius:var(--radius-lg);
  border:1px solid var(--line-mid);
  background:var(--glass);
  -webkit-backdrop-filter:blur(12px) saturate(130%);
  backdrop-filter:blur(12px) saturate(130%);
}
.filter-bar__label{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--mist);
  margin-right:2px;
}
.filter-chip{
  padding:7px 15px;
  border-radius:999px;
  border:1px solid var(--line-mid);
  font-size:13px;
  font-weight:600;
  color:var(--mist);
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
.filter-chip:hover{color:var(--paper);border-color:var(--line-strong)}
.filter-chip[aria-pressed="true"]{
  background:var(--cyan);
  border-color:var(--cyan);
  color:var(--deep);
}
.filter-count{
  margin-left:auto;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--mist);
  letter-spacing:.04em;
}
.filter-empty{
  display:none;
  padding:24px 4px;
  color:var(--mist);
  font-size:14px;
}
.filter-empty[data-visible]{display:block}
@keyframes filter-fade{from{opacity:0}to{opacity:1}}
.filter-item--enter{animation:filter-fade .24s var(--ease) both}

/* ---------- 11. 数据表 ---------- */
.data-table{
  width:100%;
  font-size:14px;
  border:1px solid var(--line);
  border-radius:var(--radius-lg);
  overflow:hidden;
}
.data-table th{
  background:var(--console);
  color:var(--cyan);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.1em;
  text-align:left;
  padding:12px 14px;
  white-space:nowrap;
}
.data-table td{
  padding:12px 14px;
  border-top:1px solid var(--line);
  color:var(--paper);
  line-height:1.6;
  vertical-align:top;
}
.data-table tbody tr{transition:background-color .18s var(--ease)}
.data-table tbody tr:hover{background:rgba(34,224,214,.05)}
.data-table .mono{color:var(--mist);font-size:13px}

/* ---------- 12. 图片容器（仅提供占位结构，不含任何真实图片） ---------- */
.figure{
  position:relative;
  display:block;
  overflow:hidden;
  border-radius:var(--radius-lg);
  border:1px solid var(--line);
  background:var(--layer);
}
.figure__media{
  display:block;
  width:100%;
  height:100%;
  aspect-ratio:16 / 9;
  object-fit:cover;
  background:linear-gradient(135deg,var(--console),var(--layer));
}
.figure--wide .figure__media{aspect-ratio:21 / 9}
.figure--tall .figure__media{aspect-ratio:4 / 5}
.figure__caption{
  display:block;
  padding:10px 14px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--mist);
  font-family:var(--font-mono);
  letter-spacing:.03em;
}

/* ---------- 13. 左侧纵向版本轴 ---------- */
.rail{display:none}
@media (min-width:1120px){
  .rail{
    display:flex;
    flex-direction:column;
    gap:18px;
    position:sticky;
    top:24px;
    padding-right:18px;
    border-right:1px solid var(--line);
  }
}

/* ---------- 14. 页脚 ---------- */
.site-footer{
  margin-top:clamp(48px,8vw,96px);
  background:var(--layer);
  border-top:1px solid var(--line-mid);
}
.site-footer::before{
  content:"";
  display:block;
  height:2px;
  background:linear-gradient(90deg,var(--cyan) 0 14%,var(--orange) 14% 18%,transparent 18% 100%);
}
.site-footer__main{
  display:grid;
  grid-template-columns:minmax(0,1.4fr) repeat(3,minmax(0,1fr)) minmax(0,1.25fr);
  gap:clamp(22px,3vw,42px);
  padding-block:clamp(32px,5vw,56px);
}
@media (max-width:1024px){
  .site-footer__main{grid-template-columns:repeat(2,minmax(0,1fr))}
  .site-footer__brand{grid-column:1 / -1}
}
@media (max-width:600px){
  .site-footer__main{grid-template-columns:minmax(0,1fr)}
}
.site-footer__brand{min-width:0}
.footer-brand{
  display:flex;
  align-items:center;
  gap:12px;
  margin-bottom:12px;
}
.footer-brand__mark{
  flex:none;
  padding:6px 8px;
  border-radius:var(--radius);
  background:var(--cyan);
  color:var(--deep);
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:700;
  letter-spacing:.08em;
  line-height:1;
}
.footer-brand__name{
  font-family:var(--font-display);
  font-weight:900;
  font-stretch:condensed;
  font-size:20px;
  line-height:1.1;
}
.footer-note{
  font-size:13px;
  line-height:1.7;
  color:var(--mist);
  max-width:32em;
}
.footer-note--tight{margin-top:12px;font-size:12.5px;line-height:1.65}

.footer-col{min-width:0}
.footer-col__title{
  font-family:var(--font-mono);
  font-size:12px;
  font-weight:600;
  letter-spacing:.14em;
  color:var(--cyan);
  margin-bottom:14px;
}
.footer-col__list{display:flex;flex-direction:column;gap:9px}
.footer-col__link{
  font-size:14px;
  color:var(--mist);
  transition:color .18s var(--ease);
}
.footer-col__link:hover{color:var(--paper)}

.footer-col--contact{min-width:0}
.footer-contact{display:flex;flex-direction:column;gap:9px}
.footer-contact__item{display:flex;gap:10px;align-items:baseline}
.footer-contact__key{
  flex:none;
  min-width:3.2em;
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--cyan);
  letter-spacing:.06em;
}
.footer-contact__val{
  font-size:13.5px;
  line-height:1.65;
  color:var(--mist);
  word-break:break-word;
}
.footer-contact__val.mono{font-size:13px;color:var(--paper)}

.site-footer__base{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:10px 24px;
  padding-block:18px;
  border-top:1px solid var(--line);
  font-size:12.5px;
  color:var(--mist);
}
.site-footer__copy{margin:0;max-width:none}
.site-footer__copy .mono{color:var(--mist);font-size:12.5px}
.site-footer__legal{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:6px 18px;
}
.site-footer__link{
  color:var(--mist);
  padding-bottom:1px;
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.site-footer__link:hover{color:var(--cyan);border-bottom-color:var(--cyan)}

/* ---------- 15. 脚本注入元素 ---------- */
.scroll-progress{
  position:fixed;
  top:0;
  left:0;
  z-index:120;
  width:100%;
  height:2px;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--cyan),var(--orange));
  pointer-events:none;
}
.to-top{
  position:fixed;
  right:clamp(14px,3vw,28px);
  bottom:clamp(14px,3vw,28px);
  z-index:110;
  width:44px;
  height:44px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%;
  border:1px solid var(--line-strong);
  background:var(--console);
  color:var(--cyan);
  font-size:16px;
  line-height:1;
  opacity:0;
  visibility:hidden;
  transition:opacity .24s var(--ease),visibility .24s var(--ease),border-color .18s var(--ease);
}
.to-top[data-visible]{opacity:1;visibility:visible}
.to-top:hover{border-color:var(--cyan)}

/* ---------- 16. 移动端头部折叠 ---------- */
@media (max-width:880px){
  .nav-toggle{display:inline-flex}
  .masthead__actions{display:none}
  .site-nav{display:none}
  .site-nav[data-open]{display:block}
  .site-nav__inner{
    flex-direction:column;
    align-items:stretch;
    gap:0;
    min-height:0;
    padding-block:8px 16px;
  }
  .site-nav__list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .site-nav__link{
    padding:13px 14px;
    border-bottom:1px solid var(--line);
    border-left:2px solid transparent;
    font-size:15px;
  }
  .site-nav__link[aria-current="page"]{
    color:var(--cyan);
    background:rgba(34,224,214,.07);
    border-bottom-color:var(--line);
    border-left-color:var(--cyan);
  }
  .site-nav__meta{
    margin-left:0;
    padding:14px 14px 0;
    white-space:normal;
    font-size:12px;
  }
}
@media (max-width:560px){
  .brand__tagline{display:none}
  .brand__mark{font-size:12px;padding:6px 8px}
  .utility-strip__item{font-size:11.5px}
}

/* ---------- 17. 减少动态效果 ---------- */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  .filter-item--enter{animation:none}
}