/* ============================================================
   365安卓站 · 共享样式表 /assets/site.css
   深靛蓝刊头 + 暖白纸面 + 经幡五色刻度 + 锐利直角与精密网格
   ============================================================ */

:root{
  --ink:#101F3C;
  --ink-deep:#060D1C;
  --paper:#FBF7EF;
  --blue:#2F7BD8;
  --sky:#8FC3EC;
  --vermilion:#D6402E;
  --turquoise:#17A08A;
  --saffron:#F0B429;
  --graphite:#46536B;
  --grid:#C7D2E1;
  --white:#FFFFFF;

  --ff-sans:"PingFang SC","Hiragino Sans GB","Source Han Sans SC","Noto Sans CJK SC","Microsoft YaHei",system-ui,-apple-system,sans-serif;
  --ff-mono:ui-monospace,"JetBrains Mono","SFMono-Regular",Menlo,Consolas,monospace;

  --w-max:1320px;
  --gutter:clamp(20px,4vw,72px);
  --gap:24px;
  --hair:1px solid var(--grid);

  --flag:linear-gradient(90deg,
    var(--blue) 0 20%,
    var(--white) 20% 40%,
    var(--vermilion) 40% 60%,
    var(--turquoise) 60% 80%,
    var(--saffron) 80% 100%);
}

/* ---------- reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--graphite);
  font-family:var(--ff-sans);
  font-size:17px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4,h5,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,svg{display:block;max-width:100%}
img{height:auto}
a{color:var(--blue);text-decoration-thickness:1px;text-underline-offset:3px}
button{font:inherit;color:inherit;background:none;border:0}
[hidden]{display:none !important}

h1,h2,h3,h4{
  color:var(--ink);
  font-weight:900;
  letter-spacing:0.06em;
  line-height:1.18;
}
h1{font-size:clamp(2.2rem,5.4vw,4.2rem)}
h2{font-size:clamp(1.5rem,2.8vw,2.2rem)}
h3{font-size:clamp(1.15rem,1.8vw,1.4rem)}
strong{color:var(--ink)}

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

.mono{
  font-family:var(--ff-mono);
  font-variant-numeric:tabular-nums;
  letter-spacing:0.06em;
}

#main-content{display:block;scroll-margin-top:24px}

/* ---------- 跳过链接 ---------- */
.skip-link{
  position:absolute;
  left:16px;
  top:-72px;
  z-index:300;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 20px;
  background:var(--ink);
  color:var(--white);
  font-size:14px;
  font-weight:700;
  letter-spacing:0.08em;
  text-decoration:none;
  border-left:4px solid var(--saffron);
  transition:top .18s ease;
}
.skip-link:focus{top:12px}

/* ---------- 滚动进度 ---------- */
.scroll-progress{
  position:fixed;
  inset:0 0 auto 0;
  height:3px;
  z-index:200;
  background:rgba(16,31,60,.12);
  pointer-events:none;
}
.scroll-progress__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--blue),var(--turquoise) 55%,var(--saffron));
}

/* ---------- 页头 ---------- */
.site-header{
  position:relative;
  z-index:80;
  background:var(--paper);
}
.flag-rule{height:4px;background:var(--flag)}

.masthead-shell{
  background-color:var(--ink);
  background-image:repeating-linear-gradient(90deg,rgba(199,210,225,.09) 0 1px,transparent 1px 96px);
  color:var(--paper);
  border-bottom:1px solid rgba(199,210,225,.18);
}
.masthead{
  width:100%;
  max-width:var(--w-max);
  margin:0 auto;
  padding:clamp(16px,2.4vw,28px) var(--gutter);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:clamp(16px,3vw,40px);
  flex-wrap:wrap;
}

.brand{
  display:inline-flex;
  align-items:center;
  gap:14px;
  text-decoration:none;
  color:inherit;
}
.brand__mark{
  flex:0 0 auto;
  width:8px;
  height:46px;
  background:linear-gradient(180deg,var(--blue) 0 20%,var(--white) 20% 40%,var(--vermilion) 40% 60%,var(--turquoise) 60% 80%,var(--saffron) 80% 100%);
}
.brand__stack{display:block}
.brand__name{
  display:block;
  font-size:clamp(1.55rem,2.9vw,2.2rem);
  font-weight:900;
  line-height:1;
  letter-spacing:0.1em;
}
.brand__num{
  font-family:var(--ff-mono);
  font-weight:700;
  letter-spacing:0.02em;
  color:var(--sky);
  margin-right:0.14em;
}
.brand__cn{color:var(--white);letter-spacing:0.2em}
.brand__sub{
  display:block;
  margin-top:9px;
  font-size:11px;
  letter-spacing:0.24em;
  color:var(--sky);
  line-height:1;
}

.masthead__tools{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  flex-wrap:wrap;
  gap:12px;
}

.version-chip{
  display:inline-flex;
  flex-direction:column;
  justify-content:center;
  gap:1px;
  min-height:44px;
  padding:6px 14px;
  border:1px solid rgba(199,210,225,.32);
  border-left:3px solid var(--vermilion);
  color:var(--paper);
  text-decoration:none;
  line-height:1.25;
  transition:border-color .18s ease,background-color .18s ease;
}
.version-chip:hover{
  border-color:var(--saffron);
  border-left-color:var(--saffron);
  background:rgba(255,255,255,.05);
}
.version-chip__label{font-size:11px;letter-spacing:0.14em;color:var(--sky)}
.version-chip__num{font-family:var(--ff-mono);font-size:14px;color:var(--white);letter-spacing:0.04em}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 22px;
  border:1px solid transparent;
  border-radius:0;
  font-family:inherit;
  font-size:14px;
  font-weight:700;
  letter-spacing:0.08em;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .18s ease,color .18s ease,border-color .18s ease;
}
.btn--primary{background:var(--blue);color:var(--white)}
.btn--primary:hover{background:var(--vermilion);color:var(--white)}
.btn--ghost{background:transparent;color:var(--ink);border-color:var(--grid)}
.btn--ghost:hover{border-color:var(--ink);background:rgba(16,31,60,.06)}

/* ---------- 移动导航按钮 ---------- */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  min-height:44px;
  padding:0 14px;
  border:1px solid rgba(199,210,225,.4);
  color:var(--paper);
  font-size:13px;
  letter-spacing:0.1em;
  cursor:pointer;
  transition:border-color .18s ease;
}
.nav-toggle:hover{border-color:var(--saffron)}
.nav-toggle__bars{
  display:inline-flex;
  flex-direction:column;
  justify-content:space-between;
  width:18px;
  height:12px;
}
.nav-toggle__bars span{
  display:block;
  height:2px;
  background:currentColor;
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

/* ---------- 导航带 ---------- */
.nav-band{
  display:block;
  background:var(--paper);
  border-bottom:var(--hair);
}
.nav-band__inner{
  position:relative;
  width:100%;
  max-width:var(--w-max);
  margin:0 auto;
  padding:0 var(--gutter);
  display:flex;
  align-items:center;
  gap:24px;
}
.nav-list{
  flex:1 1 auto;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:clamp(4px,2.4vw,36px);
}
.nav-list a{
  display:inline-flex;
  align-items:center;
  min-height:54px;
  padding:0 2px;
  border-bottom:2px solid transparent;
  color:var(--ink);
  font-size:14px;
  font-weight:700;
  letter-spacing:0.06em;
  text-decoration:none;
  transition:color .18s ease,border-color .18s ease;
}
.nav-list a:hover{color:var(--blue)}
.nav-list a[aria-current="page"]{
  color:var(--vermilion);
  border-bottom-color:var(--vermilion);
}
.nav-band__meta{
  position:absolute;
  right:var(--gutter);
  top:50%;
  transform:translateY(-50%);
  font-family:var(--ff-mono);
  font-size:11px;
  letter-spacing:0.14em;
  color:var(--graphite);
  white-space:nowrap;
}

/* ---------- 通用版式 ---------- */
.container{
  width:100%;
  max-width:var(--w-max);
  margin:0 auto;
  padding:0 var(--gutter);
}
.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:var(--gap);
}
.section{
  position:relative;
  padding:clamp(48px,7vw,96px) 0;
}
.section--ink{background:var(--ink);color:rgba(251,247,239,.86)}
.section--ink h2,.section--ink h3,.section--ink h1{color:var(--white)}
.section--ink a{color:var(--sky)}
.section--rule{border-top:var(--hair)}
.section-index{
  font-family:var(--ff-mono);
  font-size:12px;
  letter-spacing:0.14em;
  color:var(--graphite);
}
.section--ink .section-index{color:var(--sky)}
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  font-family:var(--ff-mono);
  font-size:11px;
  font-weight:700;
  letter-spacing:0.18em;
  text-transform:uppercase;
  color:var(--vermilion);
}
.eyebrow::before{content:"";width:28px;height:1px;background:currentColor}
.status-strip{
  display:flex;
  flex-wrap:wrap;
  gap:8px 28px;
  padding:14px 0;
  border-top:var(--hair);
  border-bottom:var(--hair);
  font-family:var(--ff-mono);
  font-size:12px;
  letter-spacing:0.1em;
  color:var(--graphite);
}
.prose{
  max-width:38em;
  font-size:17px;
  line-height:1.75;
  color:var(--graphite);
}
.prose > * + *{margin-top:1.1em}
.prose h2{font-size:1.4rem;margin-top:1.9em;letter-spacing:0.04em}
.prose h3{font-size:1.12rem;margin-top:1.6em}
.prose ul,.prose ol{list-style:revert;padding-left:1.4em}
.prose li + li{margin-top:0.4em}
.prose a{color:var(--blue)}
.prose code{
  font-family:var(--ff-mono);
  font-size:0.9em;
  background:rgba(199,210,225,.35);
  padding:0.1em 0.35em;
}

/* ---------- 卡片与面板 ---------- */
.card{
  position:relative;
  padding:clamp(18px,2.4vw,28px);
  background:var(--white);
  border:1px solid var(--grid);
}
.card--ink{
  background:var(--ink);
  border-color:var(--ink);
  color:rgba(251,247,239,.86);
}
.card--ink h3{color:var(--white)}
.panel{background:var(--white);border:1px solid var(--grid)}

/* ---------- 图片容器 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16/10;
  border:1px solid var(--grid);
  background-color:var(--paper);
  background-image:
    linear-gradient(180deg,rgba(143,195,236,.30),rgba(251,247,239,0) 62%),
    repeating-linear-gradient(0deg,transparent 0 23px,rgba(199,210,225,.45) 23px 24px),
    repeating-linear-gradient(90deg,transparent 0 23px,rgba(199,210,225,.45) 23px 24px);
}
.media-frame > img,
.media-frame > svg{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame__caption{
  position:absolute;
  left:0;
  bottom:0;
  padding:10px 14px;
  background:var(--ink);
  color:var(--white);
  font-family:var(--ff-mono);
  font-size:11px;
  letter-spacing:0.14em;
}

/* ---------- 面包屑 ---------- */
.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:16px 0;
  border-bottom:var(--hair);
  font-size:12px;
  letter-spacing:0.1em;
  color:var(--graphite);
}
.breadcrumb a{color:var(--graphite);text-decoration:none}
.breadcrumb a:hover{color:var(--blue)}
.breadcrumb [aria-current="page"]{color:var(--ink);font-weight:700}
.breadcrumb li + li::before{content:"/";margin-right:8px;color:var(--grid)}

/* ---------- 章节目录 ---------- */
.toc{font-size:13px;line-height:1.5}
.toc a{
  display:block;
  min-height:40px;
  padding:9px 0 9px 14px;
  border-left:2px solid var(--grid);
  color:var(--graphite);
  text-decoration:none;
  transition:color .18s ease,border-color .18s ease;
}
.toc a:hover{color:var(--ink);border-left-color:var(--sky)}
.toc a[aria-current="true"]{
  color:var(--vermilion);
  border-left-color:var(--vermilion);
  font-weight:700;
}

/* ---------- 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  min-height:32px;
  padding:0 12px;
  border:1px solid var(--grid);
  background:var(--white);
  color:var(--ink);
  font-size:12px;
  letter-spacing:0.06em;
  text-decoration:none;
}
.tag--saffron{background:var(--saffron);border-color:var(--saffron);color:var(--ink)}
.tag--turquoise{background:var(--turquoise);border-color:var(--turquoise);color:var(--white)}
.tag--vermilion{background:var(--vermilion);border-color:var(--vermilion);color:var(--white)}

/* ---------- 折叠面板 ---------- */
.disclosure{
  margin:0 0 12px;
  border:1px solid var(--grid);
  background:var(--white);
}
.disclosure summary{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  min-height:52px;
  padding:12px 18px;
  cursor:pointer;
  color:var(--ink);
  font-weight:700;
  letter-spacing:0.04em;
  list-style:none;
}
.disclosure summary::-webkit-details-marker{display:none}
.disclosure summary::after{
  content:"+";
  font-family:var(--ff-mono);
  font-size:18px;
  color:var(--vermilion);
}
.disclosure[open] summary::after{content:"−"}
.disclosure[open] summary{border-bottom:1px solid var(--grid)}
.disclosure__body{padding:16px 18px 20px}

/* ---------- 表格 ---------- */
.table-wrap{
  overflow-x:auto;
  border:1px solid var(--grid);
  background:var(--white);
}
table.data{width:100%;min-width:560px;border-collapse:collapse;font-size:14px}
table.data th,
table.data td{
  padding:12px 14px;
  border-bottom:1px solid var(--grid);
  text-align:left;
  vertical-align:top;
}
table.data th{
  background:var(--paper);
  color:var(--ink);
  font-size:11px;
  font-weight:700;
  letter-spacing:0.14em;
  white-space:nowrap;
}
table.data tr:last-child td{border-bottom:0}

/* ---------- 过滤 ---------- */
.filter-field{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:48px;
  padding:0 14px;
  border:1px solid var(--grid);
  background:var(--white);
}
.filter-field:focus-within{border-color:var(--ink);box-shadow:inset 0 0 0 1px var(--ink)}
.filter-field input{
  flex:1 1 auto;
  min-height:46px;
  border:0;
  background:transparent;
  color:var(--ink);
  font:inherit;
  font-size:15px;
  outline:none;
}
.filter-field input:focus-visible{outline:none}
.filter-field__hint{
  font-family:var(--ff-mono);
  font-size:11px;
  letter-spacing:0.14em;
  color:var(--graphite);
  white-space:nowrap;
}
.filter-empty{
  padding:20px 0;
  font-family:var(--ff-mono);
  font-size:13px;
  letter-spacing:0.1em;
  color:var(--graphite);
}

/* ---------- 页脚 ---------- */
.site-footer{
  position:relative;
  background:var(--ink);
  background-image:repeating-linear-gradient(90deg,rgba(199,210,225,.07) 0 1px,transparent 1px 96px);
  color:rgba(251,247,239,.82);
}
.footer-band{height:6px;background:var(--flag)}
.footer-shell{
  width:100%;
  max-width:var(--w-max);
  margin:0 auto;
  padding:clamp(36px,5vw,68px) var(--gutter) 28px;
}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,2fr);
  gap:clamp(28px,4vw,56px);
  padding-bottom:clamp(28px,4vw,44px);
  border-bottom:1px solid rgba(199,210,225,.2);
}
.footer-intro .brand--inverse .brand__name{font-size:clamp(1.4rem,2.4vw,1.8rem)}
.footer-intro__note{
  margin-top:18px;
  max-width:30em;
  font-size:14px;
  line-height:1.8;
  color:rgba(251,247,239,.7);
}
.footer-matrix{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:clamp(18px,2.5vw,32px);
  align-content:start;
}
.footer-col__title{
  margin:0 0 12px;
  padding-bottom:10px;
  border-bottom:1px solid rgba(240,180,41,.5);
  color:var(--saffron);
  font-size:11px;
  font-weight:700;
  letter-spacing:0.18em;
}
.footer-tags{display:flex;flex-direction:column}
.footer-tags a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:4px 0;
  border-bottom:1px solid rgba(199,210,225,.14);
  color:rgba(251,247,239,.82);
  font-size:13px;
  letter-spacing:0.04em;
  text-decoration:none;
  transition:color .18s ease,border-color .18s ease;
}
.footer-tags a:hover{color:var(--white);border-bottom-color:var(--saffron)}
.footer-tags li:last-child a{border-bottom:0}

.footer-contact{
  display:grid;
  grid-template-columns:repeat(3,minmax(0,1fr));
  gap:clamp(20px,3vw,40px);
  padding:clamp(24px,3.4vw,36px) 0;
  border-bottom:1px solid rgba(199,210,225,.2);
}
.footer-contact__item{min-height:44px}
.footer-contact__label{
  margin:0 0 10px;
  font-family:var(--ff-mono);
  font-size:11px;
  letter-spacing:0.18em;
  color:var(--sky);
}
.footer-contact__value{
  margin:0 0 10px;
  color:var(--white);
  font-size:15px;
  font-weight:700;
  letter-spacing:0.04em;
  word-break:break-word;
}
.footer-contact__hint{
  margin:8px 0 0;
  font-size:12px;
  line-height:1.6;
  color:rgba(251,247,239,.6);
}
.copy-btn{
  display:inline-flex;
  align-items:center;
  min-height:36px;
  padding:0 14px;
  border:1px solid rgba(199,210,225,.45);
  color:var(--paper);
  font-size:12px;
  letter-spacing:0.08em;
  cursor:pointer;
  transition:border-color .18s ease,color .18s ease;
}
.copy-btn:hover{border-color:var(--saffron);color:var(--saffron)}
.copy-status{
  display:inline-block;
  margin-left:8px;
  font-family:var(--ff-mono);
  font-size:11px;
  letter-spacing:0.1em;
  color:var(--turquoise);
}
.copy-status:empty{display:none}

.footer-legal{
  padding-top:22px;
  display:grid;
  gap:8px;
}
.footer-legal__line{
  font-family:var(--ff-mono);
  font-size:11px;
  line-height:1.8;
  letter-spacing:0.08em;
  color:rgba(251,247,239,.58);
}
.footer-legal__line a{color:rgba(251,247,239,.78);text-decoration:none;border-bottom:1px solid rgba(240,180,41,.45)}
.footer-legal__line a:hover{color:var(--saffron)}

/* ---------- 返回顶部 ---------- */
.back-to-top{
  position:fixed;
  right:clamp(16px,3vw,32px);
  bottom:clamp(16px,3vw,32px);
  z-index:150;
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:0 16px;
  border:1px solid var(--ink);
  background:var(--paper);
  color:var(--ink);
  font-family:var(--ff-mono);
  font-size:12px;
  letter-spacing:0.14em;
  cursor:pointer;
  opacity:0;
  visibility:hidden;
  transform:translateY(10px);
  transition:opacity .25s ease,transform .25s ease,visibility .25s ease,background-color .18s ease,color .18s ease;
}
.back-to-top[data-visible="true"]{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{background:var(--ink);color:var(--paper)}

/* ---------- 平板 ---------- */
@media (max-width:1199px){
  .nav-band__meta{display:none}
}
@media (max-width:1023px){
  .footer-top{grid-template-columns:1fr}
  .footer-matrix{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-contact{grid-template-columns:1fr;gap:24px}
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
}

/* ---------- 手机 ---------- */
@media (max-width:899px){
  .masthead{
    flex-direction:column;
    align-items:stretch;
    gap:14px;
  }
  .masthead__tools{
    width:100%;
    justify-content:space-between;
    gap:10px;
  }
  .brand__mark{height:38px}
  .brand__sub{margin-top:7px;font-size:10px;letter-spacing:0.18em}
  .version-chip{
    flex-direction:row;
    align-items:center;
    gap:8px;
    padding:0 12px;
    min-height:44px;
  }
  .version-chip__label{display:none}
  .version-chip__num{font-size:13px}
  .nav-toggle{display:inline-flex}
  .nav-band{display:none}
  .nav-band[data-open]{display:block}
  .nav-band__inner{
    flex-direction:column;
    align-items:stretch;
    padding:6px var(--gutter) 18px;
    gap:0;
  }
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
  }
  .nav-list a{
    min-height:48px;
    border-bottom:1px solid var(--grid);
    font-size:15px;
  }
  .nav-list a[aria-current="page"]{border-bottom-color:var(--vermilion)}
  .grid-12{grid-template-columns:repeat(4,minmax(0,1fr))}
}
@media (max-width:767px){
  body{font-size:16px}
  .grid-12{grid-template-columns:1fr;gap:18px}
  .footer-matrix{grid-template-columns:1fr}
  .footer-tags a{font-size:14px}
  .status-strip{font-size:11px;gap:6px 18px}
  .back-to-top{right:14px;bottom:14px;padding:0 12px}
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:0.01ms !important;
    animation-iteration-count:1 !important;
    transition-duration:0.01ms !important;
  }
  .skip-link{transition:none}
  .back-to-top,
  .back-to-top[data-visible="true"]{transform:none}
  .nav-toggle__bars span{transition:none}
}