/* =============================================================
   JDB官方站 · 共享样式表 /assets/site.css
   墨蓝档案底 + 旧报纸米面 + 朱红/荧光青状态色
   ============================================================= */

/* ---------- [01] 变量 ---------- */
:root{
  --ink:#0D1B2A;
  --ink-2:#17324A;
  --ink-3:#0A1522;
  --paper:#F0E6D2;
  --paper-2:#DCCFB4;
  --paper-3:#E7DCC6;
  --accent:#D63A2F;
  --accent-2:#9E241C;
  --cyan:#1FE0C4;
  --cyan-2:#0E8C7E;
  --marker:#F2C14E;
  --text:#1A2530;
  --gray:#4A5763;
  --cream:#F7F2E7;

  --wrap:1240px;
  --gutter:clamp(16px,4vw,48px);
  --ease:cubic-bezier(.22,.61,.36,1);

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

  --cut-sm:polygon(0 0,100% 0,100% 70%,88% 100%,0 100%);
  --cut-lg:polygon(0 0,100% 0,100% calc(100% - 24px),calc(100% - 24px) 100%,0 100%);
}

/* ---------- [02] 重置 ---------- */
*,*::before,*::after{box-sizing:border-box}
body,h1,h2,h3,h4,h5,p,ul,ol,figure,blockquote,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
a{color:inherit}
img,svg{max-width:100%;display:block}
table{border-collapse:collapse;width:100%}
[hidden]{display:none !important}

html{
  -webkit-text-size-adjust:100%;
  scroll-behavior:smooth;
  scroll-padding-top:110px;
}

/* ---------- [03] 中文排版 ---------- */
body{
  font-family:var(--font-body);
  font-size:17px;
  line-height:1.8;
  letter-spacing:.01em;
  color:var(--text);
  background-color:var(--ink);
  background-image:
    linear-gradient(rgba(23,50,74,.85) 1px,transparent 1px),
    linear-gradient(90deg,rgba(23,50,74,.85) 1px,transparent 1px);
  background-size:64px 64px;
  min-height:100vh;
  display:flex;
  flex-direction:column;
}

h1,h2,h3,h4,h5{
  font-family:var(--font-display);
  font-weight:900;
  line-height:1.08;
  letter-spacing:-.015em;
}

.display-1{font-size:clamp(40px,6vw,84px)}
.display-2{font-size:clamp(28px,3vw,44px)}
.h-3{font-size:22px;line-height:1.24}

p + p{margin-top:.85em}
strong{font-weight:700}
.mono{font-family:var(--font-mono);font-size:.94em;letter-spacing:.02em}

/* ---------- [04] 焦点与可读性 ---------- */
:focus-visible{
  outline:3px solid var(--accent);
  outline-offset:3px;
}
.site-header :focus-visible,
.site-footer :focus-visible{
  outline-color:var(--cyan);
}

/* ---------- [05] 跳转链接 ---------- */
.skip-link{
  position:absolute;
  left:14px;
  top:-72px;
  z-index:200;
  padding:11px 20px;
  background:var(--accent);
  color:var(--cream);
  font-family:var(--font-mono);
  font-size:14px;
  letter-spacing:.04em;
  text-decoration:none;
  clip-path:var(--cut-sm);
  transition:top .18s var(--ease);
}
.skip-link:focus{top:14px}

/* ---------- [06] 头部骨架 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:90;
  background:var(--ink);
  color:var(--paper);
  box-shadow:0 10px 26px rgba(10,21,34,.28);
}

.header-inner{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:14px var(--gutter);
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:clamp(14px,2.4vw,40px);
  transition:padding .22s var(--ease);
}
.site-header.is-condensed .header-inner{
  padding-top:7px;
  padding-bottom:7px;
}

/* 头部底边进度线 */
.header-progress{
  position:absolute;
  left:0;
  right:0;
  bottom:0;
  height:3px;
  background:var(--ink-2);
  overflow:hidden;
}
.header-progress span{
  display:block;
  height:100%;
  width:0;
  background:var(--accent);
  transition:width .12s linear;
}

/* ---------- [07] 品牌区 ---------- */
.brand{
  display:inline-flex;
  align-items:center;
  gap:12px;
  text-decoration:none;
  color:var(--paper);
  flex:0 0 auto;
  min-width:0;
}
.brand-mark{
  display:inline-grid;
  place-items:center;
  padding:7px 10px;
  font-family:var(--font-mono);
  font-weight:700;
  font-size:14px;
  letter-spacing:.08em;
  background:var(--accent);
  color:var(--cream);
  clip-path:var(--cut-sm);
  flex:0 0 auto;
}
.brand-text{
  display:flex;
  flex-direction:column;
  gap:1px;
  min-width:0;
}
.brand-name{
  font-family:var(--font-display);
  font-weight:900;
  font-size:19px;
  line-height:1.16;
  letter-spacing:-.01em;
  transition:font-size .22s var(--ease);
}
.brand-tagline{
  font-family:var(--font-body);
  font-size:12.5px;
  line-height:1.4;
  color:rgba(240,230,210,.62);
  transition:opacity .18s var(--ease);
}
.site-header.is-condensed .brand-name{font-size:15px}
.site-header.is-condensed .brand-tagline{
  opacity:0;
  pointer-events:none;
}

/* ---------- [08] 主导航 ---------- */
.site-nav{
  display:flex;
  align-items:center;
  gap:clamp(16px,2.4vw,40px);
  margin-left:auto;
}
.nav-list{
  display:flex;
  align-items:center;
  gap:clamp(12px,1.8vw,28px);
}
.nav-list a{
  position:relative;
  display:block;
  padding:10px 2px;
  font-family:var(--font-display);
  font-weight:800;
  font-size:15px;
  line-height:1.2;
  letter-spacing:.01em;
  text-decoration:none;
  color:var(--paper);
  white-space:nowrap;
}
.nav-list a::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  bottom:2px;
  height:3px;
  background:var(--accent);
  transform:scaleX(0);
  transform-origin:left center;
  transition:transform .2s var(--ease);
}
.nav-list a:hover::after,
.nav-list a:focus-visible::after{transform:scaleX(1)}
.nav-list a[aria-current="page"]{color:var(--cyan)}
.nav-list a[aria-current="page"]::after{
  transform:scaleX(1);
  background:var(--cyan);
}

/* ---------- [09] 版本切换 ---------- */
.version-switch{
  display:flex;
  align-items:center;
  gap:8px;
  padding-left:clamp(12px,1.6vw,22px);
  border-left:1px solid var(--ink-2);
  margin-left:clamp(0px,.8vw,10px);
}
.version-switch-label{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.16em;
  color:rgba(240,230,210,.45);
}
.version-switch-sep{
  font-family:var(--font-mono);
  font-size:12px;
  color:rgba(240,230,210,.3);
}
.version-switch button{
  padding:5px 9px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.02em;
  color:rgba(240,230,210,.72);
  border:1px solid rgba(240,230,210,.22);
  clip-path:var(--cut-sm);
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.version-switch button:hover{
  color:var(--cyan);
  border-color:var(--cyan);
}
.version-switch button[aria-pressed="true"]{
  background:var(--cyan);
  border-color:var(--cyan);
  color:var(--ink);
  font-weight:700;
}

/* ---------- [10] 移动导航按钮 ---------- */
.nav-toggle{
  display:none;
  align-items:center;
  gap:10px;
  padding:9px 13px;
  border:1px solid rgba(240,230,210,.28);
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:.06em;
  clip-path:var(--cut-sm);
}
.nav-toggle-bars{
  position:relative;
  display:block;
  width:18px;
  height:12px;
}
.nav-toggle-bars::before,
.nav-toggle-bars::after{
  content:"";
  position:absolute;
  left:0;
  right:0;
  height:2px;
  background:currentColor;
  transition:transform .2s var(--ease);
}
.nav-toggle-bars::before{top:1px}
.nav-toggle-bars::after{bottom:1px}
.site-header[data-open] .nav-toggle-bars::before{transform:translateY(4px) rotate(45deg)}
.site-header[data-open] .nav-toggle-bars::after{transform:translateY(-4px) rotate(-45deg)}

/* ---------- [11] 移动端断点：导航抽屉 ---------- */
@media (max-width:980px){
  .nav-toggle{display:inline-flex}
  .site-nav{
    position:absolute;
    top:100%;
    left:0;
    right:0;
    display:none;
    flex-direction:column;
    align-items:stretch;
    gap:0;
    margin-left:0;
    padding:10px var(--gutter) 22px;
    max-height:calc(100vh - 80px);
    overflow-y:auto;
    background:var(--ink-2);
    border-top:1px solid rgba(31,224,196,.22);
    border-bottom:3px solid var(--accent);
  }
  .site-header[data-open] .site-nav{display:flex}
  .nav-list{
    flex-direction:column;
    align-items:stretch;
    gap:0;
  }
  .nav-list a{
    font-size:17px;
    padding:14px 0;
    border-bottom:1px solid rgba(240,230,210,.14);
  }
  .nav-list a::after{display:none}
  .nav-list a[aria-current="page"]{
    color:var(--cyan);
    padding-left:14px;
    border-left:4px solid var(--cyan);
    margin-left:-14px;
  }
  .version-switch{
    border-left:0;
    border-top:1px solid rgba(240,230,210,.18);
    margin:16px 0 0;
    padding:16px 0 0;
    gap:10px;
  }
  .version-switch-label{margin-right:4px}
  .brand-tagline{display:none}
}

/* ---------- [12] 正文容器与网格 ---------- */
.wrap{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding-inline:var(--gutter);
}

.canvas{
  background-color:var(--paper);
  background-image:radial-gradient(rgba(26,37,48,.05) 1px,transparent 1px);
  background-size:6px 6px;
  color:var(--text);
}

.on-dark{color:var(--paper)}
.on-dark .eyebrow,
.on-dark .section-label{color:var(--cyan)}

.prose{max-width:66ch}
.prose > * + *{margin-top:1.05em}
.prose h2{font-size:clamp(24px,2.4vw,32px)}
.prose ul{list-style:none}
.prose ul li{
  position:relative;
  padding-left:1.5em;
  margin-top:.5em;
}
.prose ul li::before{
  content:"";
  position:absolute;
  left:0;
  top:.72em;
  width:8px;
  height:8px;
  background:var(--accent);
  transform:rotate(45deg);
}

.grid-12{
  display:grid;
  grid-template-columns:repeat(12,minmax(0,1fr));
  gap:clamp(16px,2.4vw,32px);
}
.split{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:clamp(18px,3vw,44px);
}
.frame-set{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(min(240px,100%),1fr));
  gap:clamp(12px,2vw,22px);
}
@media (max-width:760px){
  .split{grid-template-columns:1fr}
}

/* ---------- [13] 切角面板与分隔 ---------- */
.panel{
  background:var(--paper);
  color:var(--text);
  padding:clamp(20px,3vw,34px);
}
.panel--ink2{
  background:var(--ink-2);
  color:var(--paper);
}
.panel--cut{clip-path:var(--cut-lg)}

.hairline{
  height:1px;
  border:0;
  background:var(--paper-2);
}
.slash{
  height:10px;
  background-image:repeating-linear-gradient(115deg,var(--paper-2) 0 2px,transparent 2px 11px);
}
.slash--dark{
  background-image:repeating-linear-gradient(115deg,rgba(240,230,210,.28) 0 2px,transparent 2px 11px);
}
.rule-accent{
  width:64px;
  height:4px;
  background:var(--accent);
}

/* ---------- [14] 眉标 / 标签 / 编号 ---------- */
.eyebrow,
.section-label{
  display:inline-flex;
  align-items:center;
  gap:.4em;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.14em;
  color:var(--cyan-2);
}
.eyebrow::before,.section-label::before{content:"["}
.eyebrow::after,.section-label::after{content:"]"}

.tag{
  display:inline-flex;
  align-items:center;
  gap:.45em;
  padding:4px 10px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.1em;
  background:var(--paper-2);
  color:var(--gray);
}
.tag--accent{
  background:var(--accent);
  color:var(--cream);
}
.tag--cyan{
  background:transparent;
  border:1px solid var(--cyan-2);
  color:var(--cyan-2);
}

.num{
  font-family:var(--font-mono);
  font-size:15px;
  font-weight:700;
  letter-spacing:.02em;
  color:var(--accent);
}
.num::before{content:"["}
.num::after{content:"]"}

/* ---------- [15] 按钮 ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  gap:.6em;
  padding:13px 22px;
  font-family:var(--font-display);
  font-weight:800;
  font-size:16px;
  line-height:1;
  letter-spacing:.01em;
  text-decoration:none;
  border:2px solid transparent;
  clip-path:var(--cut-sm);
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease),transform .16s var(--ease);
}
.btn:hover{transform:translate(-1px,-1px)}
.btn:active{transform:translate(0,0)}
.btn--primary{
  background:var(--accent);
  border-color:var(--accent);
  color:var(--cream);
}
.btn--primary:hover{
  background:var(--accent-2);
  border-color:var(--accent-2);
}
.btn--ghost{
  background:transparent;
  border-color:currentColor;
  color:var(--text);
}
.on-dark .btn--ghost{color:var(--paper)}

/* ---------- [16] 面包屑 ---------- */
.crumbs{
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.05em;
  color:var(--gray);
}
.crumbs ol{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:.5em;
}
.crumbs li{
  display:flex;
  align-items:center;
  gap:.5em;
}
.crumbs li + li::before{
  content:"/";
  color:var(--paper-2);
}
.crumbs a{
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.crumbs a:hover{
  color:var(--cyan-2);
  border-bottom-color:var(--cyan-2);
}
.crumbs [aria-current="page"]{
  color:var(--text);
  font-weight:700;
}

/* ---------- [17] 索引行 ---------- */
.index-list{display:grid}
.index-row{
  display:grid;
  grid-template-columns:auto 1fr auto;
  gap:clamp(12px,2vw,24px);
  align-items:baseline;
  padding:14px 2px;
  border-bottom:1px solid var(--paper-2);
  text-decoration:none;
  transition:background-color .16s var(--ease);
}
.index-row:hover{background:rgba(214,58,47,.06)}

/* ---------- [18] 主题筛选 ---------- */
.filter-bar{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  padding:12px 0;
}
.filter-status{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.05em;
  color:var(--gray);
}
.chip{
  padding:7px 13px;
  font-family:var(--font-mono);
  font-size:12.5px;
  letter-spacing:.06em;
  color:var(--gray);
  background:transparent;
  border:1px solid var(--paper-2);
  clip-path:var(--cut-sm);
  transition:background-color .16s var(--ease),color .16s var(--ease),border-color .16s var(--ease);
}
.chip:hover{
  color:var(--accent);
  border-color:var(--accent);
}
.chip[aria-pressed="true"]{
  background:var(--accent);
  border-color:var(--accent);
  color:var(--cream);
}

/* ---------- [19] 技能树节点 ---------- */
.skill-node{
  position:relative;
  display:grid;
  grid-template-columns:auto 1fr;
  gap:14px;
  padding:14px 0 14px 20px;
  border-left:2px solid var(--paper-2);
}
.skill-node::before{
  content:"";
  position:absolute;
  left:-6px;
  top:22px;
  width:10px;
  height:10px;
  background:var(--paper);
  border:2px solid var(--accent);
  transform:rotate(45deg);
}

/* ---------- [20] 复制按钮 ---------- */
.copy-btn{
  margin-left:6px;
  padding:5px 10px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.06em;
  color:var(--gray);
  border:1px dashed var(--gray);
  background:transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease),background-color .16s var(--ease);
}
.copy-btn:hover{
  color:var(--accent);
  border-color:var(--accent);
}
.copy-btn.is-copied{
  background:var(--cyan-2);
  border-color:var(--cyan-2);
  border-style:solid;
  color:var(--cream);
}

/* ---------- [21] 图片容器基础规则 ---------- */
.frame{
  position:relative;
  display:block;
  overflow:hidden;
  background-color:var(--ink-2);
  background-image:
    linear-gradient(rgba(31,224,196,.12) 1px,transparent 1px),
    linear-gradient(90deg,rgba(31,224,196,.12) 1px,transparent 1px);
  background-size:28px 28px;
  color:var(--paper);
  clip-path:var(--cut-lg);
}
.frame > img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
}
.frame--paper{
  background-color:var(--paper-2);
  background-image:repeating-linear-gradient(135deg,rgba(26,37,48,.07) 0 1px,transparent 1px 9px);
  color:var(--text);
}
.frame--contain > img{
  object-fit:contain;
  padding:clamp(8px,2vw,20px);
}
.frame--16x10{aspect-ratio:16/10}
.frame--4x3{aspect-ratio:4/3}
.frame--3x4{aspect-ratio:3/4}
.frame--21x9{aspect-ratio:21/9}
.frame-mark{
  position:absolute;
  left:0;
  bottom:0;
  padding:6px 13px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.08em;
  background:var(--accent);
  color:var(--cream);
  clip-path:var(--cut-sm);
}
.frame-caption{
  margin-top:8px;
  font-family:var(--font-body);
  font-size:13px;
  line-height:1.6;
  color:var(--gray);
}

/* ---------- [22] 入场擦除 ---------- */
html.reveal-ready [data-reveal]{
  opacity:0;
  transform:translateY(16px);
  clip-path:inset(0 0 100% 0);
  transition:opacity .34s var(--ease),transform .34s var(--ease),clip-path .4s var(--ease);
}
html.reveal-ready [data-reveal].is-visible{
  opacity:1;
  transform:none;
  clip-path:inset(0 0 0 0);
}

/* ---------- [23] 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:auto;
  background:var(--ink);
  color:var(--paper);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:0;
  left:0;
  right:0;
  height:2px;
  background:linear-gradient(90deg,var(--accent) 0 16%,var(--cyan) 16% 24%,var(--ink-2) 24% 100%);
}
.footer-inner{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:clamp(34px,5vw,60px) var(--gutter) clamp(22px,3vw,34px);
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.3fr;
  gap:clamp(22px,3vw,48px);
  align-items:start;
}
.footer-brand .brand{margin-bottom:14px}
.footer-line{
  max-width:30ch;
  font-size:14px;
  line-height:1.75;
  color:rgba(240,230,210,.7);
}
.footer-title{
  margin-bottom:14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  font-weight:700;
  letter-spacing:.16em;
  text-transform:uppercase;
  color:var(--cyan);
}
.footer-col ul{
  display:grid;
  gap:9px;
}
.footer-col a{
  font-size:14.5px;
  line-height:1.5;
  color:rgba(240,230,210,.78);
  text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s var(--ease),border-color .16s var(--ease);
}
.footer-col a:hover{
  color:var(--paper);
  border-bottom-color:var(--accent);
}
.footer-contact p{
  font-size:14px;
  line-height:1.75;
  color:rgba(240,230,210,.78);
}
.footer-contact .mono{color:var(--paper)}
.footer-hours{color:rgba(240,230,210,.6)}

.footer-rule{
  height:6px;
  background:var(--ink);
  overflow:hidden;
}
.footer-rule::after{
  content:"";
  display:block;
  height:100%;
  width:min(360px,46%);
  background:var(--accent);
  clip-path:polygon(0 0,100% 0,calc(100% - 16px) 100%,0 100%);
}

.footer-legal{
  width:100%;
  max-width:var(--wrap);
  margin-inline:auto;
  padding:16px var(--gutter) 26px;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:10px 20px;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.05em;
  color:rgba(240,230,210,.55);
}
.wall-mark{
  display:inline-block;
  width:46px;
  height:11px;
  flex:0 0 auto;
  background-image:
    repeating-linear-gradient(90deg,var(--paper-2) 0 5px,transparent 5px 10px),
    linear-gradient(var(--paper-2),var(--paper-2));
  background-size:100% 5px,100% 2px;
  background-position:top left,bottom left;
  background-repeat:no-repeat,no-repeat;
  opacity:.7;
}
.footer-year{margin-left:auto}

@media (max-width:980px){
  .footer-inner{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1 / -1}
}
@media (max-width:620px){
  .footer-inner{grid-template-columns:1fr}
  .footer-year{margin-left:0}
}

/* ---------- [24] 版本对照面板 ---------- */
html[data-version="mobile"] [data-version-panel="desktop"],
html[data-version="desktop"] [data-version-panel="mobile"]{
  display:none !important;
}

/* ---------- [25] 减弱动效 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  html.reveal-ready [data-reveal]{
    opacity:1 !important;
    transform:none !important;
    clip-path:none !important;
  }
  .btn:hover{transform:none}
}