/* =============================================================
   金宝博服务 · 坐标系统共享样式  /assets/site.css
   1 Reset / 2 变量 / 3 基础排版 / 4 坐标轨 Header
   5 移动抽屉 / 6 页脚 / 7 通用组件 / 8 状态动效 / 9 可访问性
   ============================================================= */

/* ---------- 1. Reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body,h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd,ul,ol,fieldset{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%;height:auto}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
table{border-collapse:collapse}
[hidden]{display:none!important}

/* ---------- 2. 变量 ---------- */
:root{
  --ink-950:#0A1A2A;
  --ink-800:#122C43;
  --paper-100:#F4EFE3;
  --paper-200:#E5DCC9;
  --brass-500:#B77B3F;
  --brass-300:#D9AE76;
  --celadon-500:#5F8E7C;
  --celadon-200:#AEC8BB;
  --amber-600:#B85C32;
  --brown-900:#1E1A16;
  --mist-000:#FCFAF4;

  --rail-w:88px;
  --rail-h:60px;

  --font-display:'Barlow Condensed','Oswald','Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-body:'Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'IBM Plex Mono','JetBrains Mono','SFMono-Regular',Consolas,'Courier New',monospace;

  --ease:cubic-bezier(0.22,1,0.36,1);
  --dur:260ms;

  --line-soft:rgba(30,26,22,.14);
  --line-dark:rgba(252,250,244,.14);
  --brass-line:rgba(183,123,63,.34);
  --ink-text:rgba(30,26,22,.64);
  --mist-text:rgba(252,250,244,.68);
}

/* ---------- 3. 基础排版 ---------- */
body{
  min-height:100vh;
  padding-left:var(--rail-w);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.75;
  color:var(--brown-900);
  background-color:var(--paper-100);
  background-image:
    radial-gradient(circle at 84% 4%,rgba(183,123,63,.12),transparent 46%),
    repeating-linear-gradient(90deg,rgba(30,26,22,.045) 0 1px,transparent 1px 132px);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
h1,h2,h3,h4{
  font-family:var(--font-display);
  font-weight:700;
  line-height:1.12;
  letter-spacing:-.02em;
  color:var(--brown-900);
  text-wrap:balance;
}
h1{font-size:clamp(38px,5.2vw,68px)}
h2{font-size:clamp(26px,3vw,40px)}
h3{font-size:clamp(20px,1.9vw,26px);line-height:1.24}
h4{font-size:clamp(17px,1.4vw,20px);line-height:1.3}
p{text-wrap:pretty}
strong{font-weight:700}
#main-content{display:block;padding-block:clamp(22px,3vw,40px) 0;outline:none}

/* 容器与工具 */
.container{width:min(100% - clamp(32px,5vw,88px),1180px);margin-inline:auto}
.visually-hidden{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;
}
.skip-link{
  position:fixed;top:10px;left:calc(var(--rail-w) + 12px);z-index:400;
  transform:translateY(-240%);
  padding:11px 20px;border-radius:2px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.08em;
  color:var(--ink-950);background:var(--brass-500);
  box-shadow:0 10px 26px rgba(10,26,42,.3);
  transition:transform var(--dur) var(--ease);
}
.skip-link:focus,.skip-link:focus-visible{transform:translateY(0)}

/* ---------- 4. 侧边坐标轨 ---------- */
.coordinate-rail{
  position:fixed;top:0;left:0;bottom:0;z-index:120;
  width:var(--rail-w);
  display:flex;
  background:linear-gradient(180deg,#0A1A2A 0%,#122C43 52%,#0A1A2A 100%);
  color:var(--mist-000);
  border-right:1px solid var(--brass-line);
  box-shadow:2px 0 20px rgba(10,26,42,.2);
}
.rail-inner{
  position:relative;
  display:flex;flex-direction:column;align-items:center;
  width:100%;height:100%;
  padding:18px 0 14px;gap:14px;
}
.rail-brand{
  flex:0 0 auto;
  display:flex;flex-direction:column;align-items:center;gap:9px;
  text-align:center;
}
.rail-mark{
  display:grid;place-items:center;
  width:42px;height:42px;border-radius:2px;
  border:1px solid rgba(217,174,118,.55);
  background:linear-gradient(150deg,rgba(183,123,63,.24),rgba(183,123,63,.04));
  color:var(--brass-300);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;
  transition:border-color var(--dur) var(--ease),color var(--dur) var(--ease);
}
.rail-brand:hover .rail-mark{border-color:var(--brass-300);color:var(--mist-000)}
.rail-name{
  writing-mode:vertical-rl;text-orientation:upright;
  font-size:13px;font-weight:500;letter-spacing:.26em;color:var(--mist-000);
}
.rail-descriptor{display:none}
@media (min-height:860px){
  .rail-descriptor{
    display:block;
    writing-mode:vertical-rl;text-orientation:upright;
    font-family:var(--font-mono);font-size:9px;letter-spacing:.2em;
    color:rgba(174,200,187,.66);
  }
}
.rail-nav{
  flex:1 1 auto;min-height:0;width:100%;
  overflow-y:auto;overflow-x:hidden;
  scrollbar-width:none;-ms-overflow-style:none;
}
.rail-nav::-webkit-scrollbar{display:none}
.rail-list{display:flex;flex-direction:column;align-items:center;width:100%;gap:2px;padding:4px 0}
.rail-link{
  position:relative;
  display:flex;flex-direction:column;align-items:center;gap:7px;
  width:100%;padding:11px 6px;
  color:rgba(252,250,244,.6);
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease);
}
.rail-num{
  font-family:var(--font-mono);font-size:9.5px;letter-spacing:.14em;
  color:rgba(183,123,63,.72);
  transition:color var(--dur) var(--ease);
}
.rail-label{
  writing-mode:vertical-rl;text-orientation:upright;
  font-size:12.5px;font-weight:500;letter-spacing:.2em;
}
.rail-link:hover{color:var(--brass-300);background:rgba(183,123,63,.1)}
.rail-link:hover .rail-num{color:var(--brass-300)}
.rail-link[aria-current="page"]{color:var(--mist-000);background:rgba(183,123,63,.16)}
.rail-link[aria-current="page"] .rail-num{color:var(--brass-300)}
.rail-link[aria-current="page"]::before{
  content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);
  width:3px;height:38px;background:var(--brass-500);
}
.rail-status{
  flex:0 0 auto;margin-top:auto;
  display:flex;flex-direction:column;align-items:center;gap:7px;
  width:100%;padding:12px 4px 0;
  border-top:1px solid rgba(252,250,244,.12);
}
.status-dot{
  width:7px;height:7px;border-radius:50%;
  background:var(--celadon-500);
  box-shadow:0 0 0 3px rgba(95,142,124,.22);
}
.rail-status-text{
  font-family:var(--font-mono);font-size:9.5px;line-height:1.42;letter-spacing:.06em;
  text-align:center;color:rgba(174,200,187,.82);
}
.rail-progress{
  position:absolute;top:0;right:0;
  width:2px;height:100%;
  background:linear-gradient(180deg,var(--brass-300),var(--brass-500));
  transform:scaleY(var(--progress,0));
  transform-origin:top center;
  transition:transform .1s linear;
  pointer-events:none;
}
.nav-toggle{display:none}
.nav-toggle-lines{display:inline-flex;flex-direction:column;justify-content:space-between;width:17px;height:12px}
.nav-toggle-lines span{display:block;width:100%;height:1.5px;background:currentColor;transition:transform var(--dur) var(--ease),opacity var(--dur) var(--ease)}
.nav-toggle-text{font-family:var(--font-mono);font-size:11px;letter-spacing:.16em}

/* ---------- 5. 移动抽屉 ---------- */
body.is-nav-open{overflow:hidden}

@media (max-width:899px){
  :root{--rail-w:0px}
  body{
    padding-left:0;padding-top:var(--rail-h);
    background-image:radial-gradient(circle at 80% 0%,rgba(183,123,63,.13),transparent 54%);
  }
  .skip-link{left:12px}

  .coordinate-rail{
    top:0;left:0;right:0;bottom:auto;
    width:100%;height:var(--rail-h);
    border-right:0;border-bottom:1px solid rgba(183,123,63,.3);
    background:rgba(10,26,42,.94);
    -webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);
    box-shadow:0 6px 22px rgba(10,26,42,.22);
  }
  .rail-inner{
    flex-direction:row;align-items:center;justify-content:space-between;
    gap:12px;height:100%;padding:0 16px;
  }
  .rail-brand{flex-direction:row;align-items:center;gap:10px;text-align:left}
  .rail-mark{width:34px;height:34px;font-size:10.5px}
  .rail-name{writing-mode:horizontal-tb;font-size:14px;letter-spacing:.06em}
  .rail-descriptor{display:none}
  .rail-status{display:none}

  .nav-toggle{
    display:inline-flex;align-items:center;gap:9px;
    padding:9px 13px;border-radius:2px;
    color:var(--brass-300);
    border:1px solid rgba(217,174,118,.45);
    transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),background-color var(--dur) var(--ease);
  }
  .nav-toggle:hover{color:var(--mist-000);border-color:var(--brass-300);background:rgba(183,123,63,.14)}
  .coordinate-rail[data-open="true"] .nav-toggle-lines span:nth-child(1){transform:translateY(5.25px) rotate(45deg)}
  .coordinate-rail[data-open="true"] .nav-toggle-lines span:nth-child(2){opacity:0}
  .coordinate-rail[data-open="true"] .nav-toggle-lines span:nth-child(3){transform:translateY(-5.25px) rotate(-45deg)}

  .rail-nav{
    position:fixed;top:var(--rail-h);left:0;right:0;z-index:118;
    width:100%;max-height:0;overflow:hidden;
    background:rgba(10,26,42,.98);
    -webkit-backdrop-filter:blur(18px);backdrop-filter:blur(18px);
    border-bottom:1px solid rgba(183,123,63,.3);
    visibility:hidden;
    transition:max-height .34s var(--ease),visibility 0s linear .34s;
  }
  .coordinate-rail[data-open="true"] .rail-nav{
    max-height:min(76vh,520px);
    overflow-y:auto;
    visibility:visible;
    transition:max-height .34s var(--ease),visibility 0s linear 0s;
  }
  .rail-list{align-items:stretch;gap:0;padding:8px 20px 22px}
  .rail-link{
    flex-direction:row;align-items:center;gap:14px;
    padding:15px 6px;
    border-bottom:1px solid rgba(252,250,244,.09);
    color:rgba(252,250,244,.82);
  }
  .rail-num{font-size:11px;letter-spacing:.1em;min-width:20px}
  .rail-label{writing-mode:horizontal-tb;font-size:16px;letter-spacing:.04em}
  .rail-link[aria-current="page"]::before{
    left:0;top:0;transform:none;width:3px;height:100%;
  }
  .rail-progress{
    top:auto;bottom:0;left:0;right:0;
    width:100%;height:2px;
    transform:scaleX(var(--progress,0));
    transform-origin:left center;
  }
}

/* ---------- 6. 页脚 ---------- */
.site-footer{
  position:relative;
  margin-top:clamp(48px,7vw,96px);
  color:var(--mist-000);
  background:linear-gradient(180deg,#0A1A2A 0%,#122C43 62%,#0A1A2A 100%);
  overflow:hidden;
}
.site-footer::before{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:repeating-linear-gradient(90deg,rgba(252,250,244,.05) 0 1px,transparent 1px 96px);
}
.footer-scale{
  position:relative;height:22px;
  border-bottom:1px solid rgba(183,123,63,.22);
  background-image:repeating-linear-gradient(90deg,rgba(183,123,63,.5) 0 1px,transparent 1px 24px);
  background-repeat:repeat-x;background-position:left bottom;background-size:auto 9px;
}
.footer-inner{
  position:relative;
  display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.4fr);
  gap:clamp(28px,4vw,64px);
  padding-block:clamp(38px,5vw,64px) clamp(34px,4vw,54px);
}
.footer-brand{display:flex;flex-direction:column;align-items:flex-start}
.footer-mark{
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(26px,2.8vw,36px);line-height:1.1;letter-spacing:.01em;
  color:var(--mist-000);
}
.footer-descriptor{
  margin-top:8px;
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.24em;
  color:var(--brass-300);
}
.footer-meta{
  margin-top:16px;max-width:32ch;
  font-size:14px;line-height:1.72;color:rgba(252,250,244,.62);
}
.footer-cta{
  display:inline-flex;align-items:center;gap:8px;margin-top:20px;padding-bottom:6px;
  font-size:14px;font-weight:500;color:var(--brass-300);
  border-bottom:1px solid var(--brass-line);
  transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease),gap var(--dur) var(--ease);
}
.footer-cta:hover{color:var(--mist-000);border-color:var(--mist-000);gap:14px}
.footer-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(20px,2.6vw,38px)}
.footer-col{min-width:0}
.footer-col-title{
  margin-bottom:14px;padding-bottom:10px;
  border-bottom:1px solid rgba(252,250,244,.12);
  font-family:var(--font-mono);font-size:10.5px;font-weight:400;
  line-height:1.4;letter-spacing:.22em;color:rgba(252,250,244,.46);
}
.footer-links{display:flex;flex-direction:column;gap:1px}
.footer-link{
  display:inline-flex;align-items:center;gap:9px;padding:6px 0;
  font-size:14px;color:rgba(252,250,244,.78);
  transition:color var(--dur) var(--ease);
}
.footer-link::before{content:"";width:7px;height:1px;background:var(--brass-500);transition:width var(--dur) var(--ease)}
.footer-link:hover{color:var(--brass-300)}
.footer-link:hover::before{width:16px}
.footer-lines{display:flex;flex-direction:column;gap:9px;font-size:13.5px;line-height:1.6;color:rgba(252,250,244,.74)}
.footer-line{display:block;word-break:break-word}
.footer-line--mono{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.02em;color:var(--brass-300)}
.footer-legal{position:relative;border-top:1px solid rgba(252,250,244,.12);background:rgba(4,12,20,.4)}
.footer-legal-inner{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:10px 24px;
  padding-block:18px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.07em;
  color:rgba(252,250,244,.46);
}
.footer-icp{color:var(--brass-300)}
.footer-copy{color:rgba(252,250,244,.46)}
@media (max-width:960px){.footer-inner{grid-template-columns:1fr}}
@media (max-width:600px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .footer-col:last-child{grid-column:1/-1}
  .footer-legal-inner{flex-direction:column;align-items:flex-start;gap:8px}
}

/* ---------- 7. 通用组件 ---------- */
.breadcrumb{
  margin-block:2px 18px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--ink-text);
}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px}
.breadcrumb-item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb-item + .breadcrumb-item::before{content:"/";color:var(--brass-500)}
.breadcrumb a{border-bottom:1px solid transparent;transition:color var(--dur) var(--ease),border-color var(--dur) var(--ease)}
.breadcrumb a:hover{color:var(--brass-500);border-color:currentColor}
.breadcrumb-item[aria-current="page"]{color:var(--brass-500)}

.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:13px 24px;border:1px solid transparent;border-radius:2px;
  font-family:var(--font-body);font-size:15px;font-weight:500;line-height:1.2;letter-spacing:.02em;
  cursor:pointer;
  transition:color var(--dur) var(--ease),background-color var(--dur) var(--ease),border-color var(--dur) var(--ease),transform var(--dur) var(--ease);
}
.btn:active{transform:translateY(1px)}
.btn--primary{background:var(--brass-500);color:var(--ink-950);border-color:var(--brass-500)}
.btn--primary:hover{background:var(--brass-300);border-color:var(--brass-300)}
.btn--ghost{background:transparent;color:var(--brown-900);border-color:rgba(30,26,22,.28)}
.btn--ghost:hover{border-color:var(--brass-500);color:var(--brass-500)}
.btn--line{background:transparent;color:var(--brass-300);border-color:rgba(217,174,118,.5)}
.btn--line:hover{background:rgba(183,123,63,.16);color:var(--mist-000)}
.btn--sm{padding:9px 16px;font-size:13.5px}

.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:3px 10px;border:1px solid currentColor;border-radius:999px;
  font-family:var(--font-mono);font-size:11px;line-height:1.8;letter-spacing:.08em;white-space:nowrap;
}
.tag--updated{color:#28503F;background:var(--celadon-200);border-color:rgba(95,142,124,.55)}
.tag--version{color:var(--brass-500);background:rgba(183,123,63,.1);border-color:rgba(183,123,63,.42)}
.tag--draft{color:var(--amber-600);background:rgba(184,92,50,.08);border-color:rgba(184,92,50,.4)}

.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--brass-500);
}
.eyebrow::before{content:"";width:26px;height:1px;background:currentColor}
.section-num{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.2em;color:var(--brass-500)}
.rule-scale{
  height:15px;border-bottom:1px solid var(--line-soft);
  background-image:repeating-linear-gradient(90deg,rgba(30,26,22,.26) 0 1px,transparent 1px 13px);
  background-repeat:repeat-x;background-position:left top;background-size:auto 7px;
}
.rule-scale--dark{
  border-color:rgba(252,250,244,.16);
  background-image:repeating-linear-gradient(90deg,rgba(217,174,118,.5) 0 1px,transparent 1px 13px);
}
.meta-line{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px 18px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--ink-text);
}

.grid-12{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(16px,2vw,28px)}
.span-2{grid-column:span 2}
.span-3{grid-column:span 3}
.span-4{grid-column:span 4}
.span-5{grid-column:span 5}
.span-6{grid-column:span 6}
.span-7{grid-column:span 7}
.span-8{grid-column:span 8}
.span-9{grid-column:span 9}
.span-10{grid-column:span 10}
.span-12{grid-column:span 12}
@media (max-width:899px){
  .grid-12{grid-template-columns:repeat(6,minmax(0,1fr))}
  .grid-12 > [class*="span-"]{grid-column:span 6}
}
@media (max-width:599px){
  .grid-12{grid-template-columns:1fr}
  .grid-12 > [class*="span-"]{grid-column:1/-1}
}

.media-frame{
  position:relative;overflow:hidden;border:1px solid var(--line-soft);border-radius:2px;
  aspect-ratio:4/3;
  background-color:var(--paper-200);
  background-image:linear-gradient(140deg,rgba(18,44,67,.16),rgba(183,123,63,.18));
}
.media-frame--wide{aspect-ratio:16/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.media-frame::before{
  content:"";position:absolute;top:10px;left:10px;z-index:2;
  width:14px;height:14px;
  border-top:1px solid var(--brass-300);border-left:1px solid var(--brass-300);
  pointer-events:none;
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  box-shadow:inset 0 0 0 1px rgba(252,250,244,.18);
}

.data-table{
  width:100%;border-collapse:collapse;
  font-size:14.5px;line-height:1.6;
  background:var(--mist-000);border:1px solid var(--line-soft);
}
.data-table caption{
  caption-side:top;padding:0 0 10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;text-align:left;color:var(--ink-text);
}
.data-table th,.data-table td{padding:12px 14px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line-soft)}
.data-table thead th{
  background:var(--ink-800);color:var(--mist-000);
  font-family:var(--font-mono);font-size:11.5px;font-weight:500;letter-spacing:.1em;white-space:nowrap;
}
.data-table tbody tr:nth-child(even){background:var(--paper-200)}
.data-table tbody tr:hover{background:rgba(174,200,187,.24)}
@media (max-width:700px){
  .data-table{font-size:13px}
  .data-table th,.data-table td{padding:10px}
}

.prose{max-width:70ch;font-size:clamp(15.5px,1.05vw,17px);line-height:1.8;color:#2A241E}
.prose > * + *{margin-top:1.05em}
.prose h2{font-size:clamp(24px,2.4vw,32px);margin-top:1.8em}
.prose h3{margin-top:1.6em}
.prose ul,.prose ol{padding-left:1.4em;list-style:revert}
.prose li{margin-top:.4em}
.prose a{color:var(--amber-600);border-bottom:1px solid rgba(184,92,50,.35)}
.prose a:hover{border-color:currentColor}
.prose blockquote{
  margin-inline:0;padding:14px 18px;
  border-left:3px solid var(--brass-500);
  background:rgba(229,220,201,.6);font-size:15px;
}
.prose code{
  font-family:var(--font-mono);font-size:.92em;
  padding:1px 5px;background:rgba(30,26,22,.07);
}

/* ---------- 8. 状态与动效 ---------- */
.copy-state{
  display:inline-flex;align-items:center;gap:6px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.05em;
  color:var(--celadon-500);
  opacity:0;transition:opacity var(--dur) var(--ease);
}
.copy-state.is-active{opacity:1}
.copy-state.is-error{color:var(--amber-600)}

[data-reveal]{opacity:0;transform:translateY(8px);transition:opacity .42s var(--ease),transform .42s var(--ease)}
[data-reveal].is-revealed{opacity:1;transform:none}

/* ---------- 9. 可访问性与降级 ---------- */
:focus-visible{outline:2px solid var(--brass-500);outline-offset:3px}
.coordinate-rail :focus-visible,.site-footer :focus-visible{outline-color:var(--brass-300)}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
    scroll-behavior:auto!important;
  }
  [data-reveal]{opacity:1;transform:none}
  .rail-progress{transition:none}
  .coordinate-rail[data-open="true"] .nav-toggle-lines span{transform:none}
}