/* ==========================================================================
   9397威利 · 共享样式表 /assets/site.css
   基底：深潜墨蓝 ｜ 结构：钢蓝灰刻度 ｜ 强调：信号橙 / 青瓷绿 ｜ 编号：陶土棕
   ========================================================================== */

/* ---------- 1. 变量 ---------- */
:root{
  --ink-900:#030B12;
  --ink-800:#071521;
  --ink-700:#0E2433;
  --ink-600:#17323F;
  --rock:#7C8FA0;
  --paper:#E8EDF0;
  --signal:#FF6A2B;
  --celadon:#45B39A;
  --terracotta:#C2703F;

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

  --shell-max:1200px;
  --gutter:clamp(16px,3.2vw,32px);
  --shadow-hard:8px 8px 0 var(--ink-900);
  --shadow-soft:4px 4px 0 var(--ink-900);
  --ease:cubic-bezier(.2,.8,.2,1);
}

/* ---------- 2. 重置 ---------- */
*,
*::before,
*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

@media (prefers-reduced-motion:no-preference){
  html{scroll-behavior:smooth}
}

body{
  margin:0;
  background-color:var(--ink-800);
  color:var(--paper);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.8;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  margin:0;
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.12;
  letter-spacing:-.02em;
}

p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
img,picture,video{max-width:100%}
img{display:block;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0}
input{font:inherit;color:inherit}

::selection{background:var(--signal);color:var(--ink-900)}

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

[hidden]{display:none!important}

.visually-hidden{
  position:absolute!important;
  width:1px;
  height:1px;
  margin:-1px;
  padding:0;
  border:0;
  clip:rect(0 0 0 0);
  clip-path:inset(50%);
  overflow:hidden;
  white-space:nowrap;
}

/* ---------- 3. 跳转与容器 ---------- */
.skip-link{
  position:absolute;
  top:8px;
  left:16px;
  z-index:200;
  display:inline-block;
  padding:10px 16px;
  border-radius:2px;
  background-color:var(--celadon);
  color:var(--ink-900);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.04em;
  transform:translateY(-260%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

.shell{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

#main-content{scroll-margin-top:96px}

.section{padding-block:clamp(40px,6vw,76px)}

.rule{
  height:0;
  border:0;
  border-top:1px solid var(--ink-600);
  margin:0;
}

/* ---------- 4. 头部 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background-color:var(--ink-800);
  box-shadow:inset 0 -1px 0 var(--ink-600);
  transition:box-shadow .2s var(--ease);
}
.site-header[data-scrolled="true"]{
  box-shadow:inset 0 -1px 0 var(--ink-600),0 12px 28px rgba(3,11,18,.6);
}

.header-inner{
  display:flex;
  align-items:center;
  gap:clamp(10px,2vw,24px);
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding:13px var(--gutter);
}

.brand{
  display:inline-flex;
  align-items:baseline;
  gap:7px;
  flex:none;
  padding:2px 0;
}
.brand-mark{
  font-family:var(--font-mono);
  font-size:14px;
  letter-spacing:.08em;
  color:var(--terracotta);
  transition:color .16s var(--ease);
}
.brand:hover .brand-mark{color:var(--signal)}
.brand-word{
  font-family:var(--font-display);
  font-weight:900;
  font-size:20px;
  letter-spacing:-.02em;
  color:var(--paper);
}

.header-divider{
  flex:none;
  width:1px;
  height:24px;
  background-color:var(--ink-600);
}

/* 检索台 */
.site-search{
  position:relative;
  display:flex;
  align-items:center;
  flex:1 1 auto;
  min-width:0;
  max-width:360px;
  margin-inline-start:clamp(4px,2vw,24px);
  margin-inline-end:auto;
  background-color:var(--ink-700);
  border:1px solid var(--ink-600);
  border-radius:2px;
  transition:max-width .22s var(--ease),border-color .16s var(--ease),box-shadow .16s var(--ease);
}
.site-header[data-scrolled="true"] .site-search{max-width:264px}
.site-search:focus-within{
  border-color:var(--celadon);
  outline:2px solid var(--celadon);
  outline-offset:2px;
}
.site-search-icon{
  position:relative;
  flex:none;
  width:11px;
  height:11px;
  margin-inline-start:11px;
  border:1.5px solid var(--rock);
  border-radius:50%;
}
.site-search-icon::after{
  content:"";
  position:absolute;
  right:-4px;
  bottom:-4px;
  width:5px;
  height:1.5px;
  background-color:var(--rock);
  transform:rotate(45deg);
}
.site-search-input{
  flex:1 1 auto;
  min-width:0;
  padding:8px 10px 8px 9px;
  background-color:transparent;
  border:0;
  color:var(--paper);
  font-size:14px;
  line-height:1.5;
}
.site-search-input::placeholder{color:var(--rock);opacity:1}
.site-search-input:focus{outline:none}
.site-search-input::-webkit-search-cancel-button{
  -webkit-appearance:none;
  appearance:none;
}

/* 移动导航按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  flex:none;
  margin-inline-start:auto;
  padding:9px 12px;
  border:1px solid var(--ink-600);
  border-radius:2px;
  color:var(--paper);
  cursor:pointer;
  transition:border-color .16s var(--ease),color .16s var(--ease);
}
.nav-toggle-text{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
}
.nav-toggle-bars{
  display:block;
  width:16px;
  height:2px;
  background-color:var(--paper);
  box-shadow:0 -5px 0 var(--paper),0 5px 0 var(--paper);
  transition:background-color .16s var(--ease),box-shadow .16s var(--ease);
}
.nav-toggle[aria-expanded="true"]{
  border-color:var(--celadon);
  color:var(--celadon);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bars{
  background-color:var(--celadon);
  box-shadow:0 -5px 0 var(--celadon),0 5px 0 var(--celadon);
}

/* 导航 */
.site-nav{
  display:flex;
  align-items:center;
  gap:clamp(10px,1.6vw,22px);
  flex:none;
  margin-inline-start:auto;
}
.site-nav-list{
  display:flex;
  align-items:center;
  gap:clamp(6px,1.2vw,18px);
}
.site-nav-item{flex:none}
.site-nav-link{
  position:relative;
  display:inline-block;
  padding:6px 2px;
  color:var(--rock);
  font-size:15px;
  line-height:1.4;
  border-radius:2px;
  transition:color .16s var(--ease);
}
.site-nav-link:hover{color:var(--paper)}
.site-nav-link[aria-current="page"]{color:var(--paper)}
.site-nav-link[aria-current="page"]::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background-color:var(--signal);
}

.scroll-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:2px;
  background-color:var(--celadon);
  transform:scaleX(0);
  transform-origin:0 50%;
  pointer-events:none;
  will-change:transform;
}

/* ---------- 5. 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:11px 18px;
  border:1px solid transparent;
  border-radius:2px;
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:700;
  letter-spacing:.04em;
  line-height:1.2;
  text-align:center;
  cursor:pointer;
  transition:background-color .16s var(--ease),color .16s var(--ease),box-shadow .16s var(--ease),transform .16s var(--ease),border-color .16s var(--ease);
}
.btn-signal{
  background-color:var(--signal);
  color:var(--ink-900);
  box-shadow:var(--shadow-soft);
}
.btn-signal:hover{
  box-shadow:2px 2px 0 var(--ink-900);
  transform:translate(2px,2px);
}
.btn-signal:active{
  box-shadow:0 0 0 var(--ink-900);
  transform:translate(4px,4px);
}
.btn-ghost{
  background-color:transparent;
  color:var(--paper);
  border-color:var(--ink-600);
}
.btn-ghost:hover{
  border-color:var(--celadon);
  color:var(--celadon);
}
.header-cta{
  flex:none;
  padding:9px 15px;
}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  margin-top:clamp(56px,8vw,104px);
  background-color:var(--ink-900);
  border-top:2px solid var(--ink-600);
}
.footer-inner{
  width:100%;
  max-width:var(--shell-max);
  margin-inline:auto;
  padding:clamp(36px,5vw,60px) var(--gutter) 26px;
}
.footer-grid{
  display:grid;
  grid-template-columns:minmax(0,1.7fr) repeat(3,minmax(0,1fr));
  gap:clamp(24px,3vw,44px);
}
.footer-col{min-width:0}
.footer-brand{
  display:inline-block;
  padding-bottom:4px;
  border-bottom:2px solid var(--signal);
  color:var(--paper);
  font-family:var(--font-display);
  font-size:22px;
  font-weight:900;
  letter-spacing:-.02em;
}
.footer-note{
  margin-top:16px;
  max-width:32ch;
  color:var(--rock);
  font-size:14px;
  line-height:1.85;
}
.footer-heading{
  margin-bottom:14px;
  color:var(--terracotta);
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:400;
  letter-spacing:.14em;
}
.footer-list{display:grid;gap:10px}
.footer-link{
  display:inline-block;
  padding-bottom:1px;
  border-bottom:1px solid transparent;
  color:var(--rock);
  font-size:15px;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-link:hover{
  color:var(--paper);
  border-color:var(--signal);
}
.footer-meta{
  display:flex;
  flex-wrap:wrap;
  align-items:baseline;
  justify-content:space-between;
  gap:8px 28px;
  margin-top:clamp(28px,4vw,44px);
  padding-top:20px;
  border-top:1px solid var(--ink-600);
  color:var(--rock);
  font-family:var(--font-mono);
  font-size:12.5px;
  line-height:1.75;
  letter-spacing:.02em;
}
.footer-contact{flex:1 1 320px;min-width:0}
.footer-legal{flex:1 1 260px;min-width:0}
.footer-year{flex:none}

/* ---------- 7. 排版与档案组件 ---------- */
.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
  color:var(--terracotta);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.14em;
}
.eyebrow::before{
  content:"";
  width:28px;
  height:1px;
  background-color:var(--terracotta);
}
.section-title{
  margin-bottom:12px;
  font-size:clamp(24px,3vw,36px);
}
.lede{
  max-width:36ch;
  color:var(--rock);
  font-size:16px;
  line-height:1.85;
}

.panel{
  padding:clamp(18px,2.4vw,28px);
  background-color:var(--ink-700);
  border:1px solid var(--ink-600);
  border-radius:2px;
}
.panel--hard{box-shadow:var(--shadow-hard)}

.frame{
  position:relative;
  background-color:var(--ink-800);
  border:2px solid var(--ink-600);
  border-radius:2px;
}
.frame::before,
.frame::after{
  content:"";
  position:absolute;
  width:16px;
  height:16px;
  pointer-events:none;
}
.frame::before{
  top:-2px;
  left:-2px;
  border-top:2px solid var(--signal);
  border-left:2px solid var(--signal);
}
.frame::after{
  right:-2px;
  bottom:-2px;
  border-right:2px solid var(--signal);
  border-bottom:2px solid var(--signal);
}

.tag{
  display:inline-flex;
  align-items:center;
  padding:3px 8px;
  border:1px solid var(--ink-600);
  border-radius:2px;
  color:var(--rock);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  line-height:1.6;
}
.tag[data-state="live"]{
  color:var(--celadon);
  border-color:var(--celadon);
}

.breadcrumb{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  margin-top:20px;
  color:var(--rock);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
}
.breadcrumb a{
  color:var(--rock);
  transition:color .16s var(--ease);
}
.breadcrumb a:hover{color:var(--signal)}
.breadcrumb span[aria-current="page"]{color:var(--paper)}

/* 档案列表 */
.index-list{
  border-top:1px solid var(--ink-600);
}
.index-row{
  display:grid;
  grid-template-columns:76px minmax(0,1fr);
  gap:4px 16px;
  padding:16px 4px;
  border-bottom:1px solid var(--ink-600);
  transition:background-color .16s var(--ease);
}
.index-row:hover{background-color:var(--ink-700)}
.index-row:hover .index-no{color:var(--signal)}
.index-no{
  color:var(--terracotta);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.04em;
  line-height:1.9;
  transition:color .16s var(--ease);
}

/* ---------- 8. 图片容器 ---------- */
.media-frame{
  position:relative;
  overflow:hidden;
  aspect-ratio:16 / 9;
  background-color:var(--ink-600);
  border:1px solid var(--ink-600);
  border-radius:2px;
}
.media-frame img{
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(.6) contrast(1.06) brightness(.9);
}
.media-frame::after{
  content:"";
  position:absolute;
  inset:0;
  background-image:linear-gradient(180deg,rgba(7,21,33,.25),rgba(7,21,33,.78));
  pointer-events:none;
}
.media-frame--portrait{aspect-ratio:4 / 5}
.media-frame--square{aspect-ratio:1 / 1}
.media-frame--wide{aspect-ratio:21 / 9}
.media-caption{
  margin-top:10px;
  color:var(--rock);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.02em;
}

/* ---------- 9. 逐条点亮 ---------- */
.js .reveal{
  opacity:0;
  transform:translateY(8px);
  transition:opacity .32s var(--ease),transform .32s var(--ease);
  will-change:opacity,transform;
}
.js .reveal.is-visible{
  opacity:1;
  transform:none;
  will-change:auto;
}

/* ---------- 10. 响应式 ---------- */
@media (max-width:1240px){
  .site-search{max-width:264px}
  .site-nav-list{gap:12px}
  .site-nav-link{font-size:14px}
}

@media (max-width:1060px){
  .header-inner{
    flex-wrap:wrap;
    row-gap:10px;
  }
  .header-divider{display:none}
  .site-search{
    order:3;
    flex:1 1 100%;
    max-width:none;
    margin-inline:0;
  }
  .site-header[data-scrolled="true"] .site-search{max-width:none}
  .nav-toggle{display:inline-flex;order:2}
  .site-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin:0;
    padding:6px var(--gutter) 22px;
    background-color:var(--ink-700);
    border-top:2px solid var(--ink-600);
    border-bottom:2px solid var(--ink-600);
    box-shadow:0 18px 32px rgba(3,11,18,.65);
  }
  .site-nav[data-open]{display:flex}
  .site-nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .site-nav-item{border-bottom:1px solid var(--ink-600)}
  .site-nav-link{
    display:block;
    padding:14px 2px;
    font-size:17px;
  }
  .site-nav-link[aria-current="page"]{color:var(--signal)}
  .site-nav-link[aria-current="page"]::after{display:none}
  .header-cta{
    width:100%;
    margin-top:18px;
  }
}

@media (min-width:820px){
  .index-row{
    grid-template-columns:88px minmax(0,1fr) 132px 104px;
    align-items:center;
  }
}

@media (max-width:900px){
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width:560px){
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-meta{
    flex-direction:column;
    align-items:flex-start;
    gap:10px;
  }
  .lede{font-size:15px}
}

/* ---------- 11. 降低动效 ---------- */
@media (prefers-reduced-motion:reduce){
  *,
  *::before,
  *::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  .js .reveal{
    opacity:1;
    transform:none;
  }
}