/* =========================================================
   /assets/site.css — 伟德主页 共享外壳
   暗底发光检索仪表盘 · 侧边轨道导航
   ========================================================= */

/* ---------- 01. 变量 ---------- */
:root{
  --ink-900:#07131F;
  --ink-850:#091A29;
  --ink-800:#0D2236;
  --ink-750:#12293F;
  --paper:#F4F7FA;
  --paper-dim:#DCE6EF;
  --mist:#A8B8C8;
  --line:#24405A;
  --line-soft:rgba(36,64,90,.62);
  --amber:#F2B84B;
  --amber-soft:#FFD98A;
  --amber-dim:rgba(242,184,75,.14);
  --hit:#39D0B0;
  --hit-deep:#1B7F6C;
  --hit-dim:rgba(57,208,176,.12);
  --alert:#E36A5E;

  --font-sans:"HarmonyOS Sans SC","Noto Sans SC","Source Han Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",Consolas,"Liberation Mono","Courier New",monospace;

  --fs-12:12px;
  --fs-14:14px;
  --fs-16:16px;
  --fs-20:20px;
  --fs-28:28px;
  --fs-40:40px;
  --fs-56:56px;
  --fs-72:72px;

  --rail-w:268px;
  --header-h:60px;
  --radius-sm:6px;
  --radius-md:12px;
  --radius-lg:16px;
  --content-max:1240px;
  --gutter:clamp(20px,4vw,48px);
  --ease:cubic-bezier(.32,.72,0,1);
}

/* ---------- 02. Reset ---------- */
*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;}
body,h1,h2,h3,h4,p,ul,ol,figure,blockquote{margin:0;}
ul,ol{padding:0;list-style:none;}
img,svg,picture,video{display:block;max-width:100%;}
button,input,select,textarea{font:inherit;color:inherit;}
a{color:inherit;}

/* ---------- 03. 中文排版基座 ---------- */
body{
  min-height:100vh;
  background-color:var(--ink-900);
  background-image:
    radial-gradient(900px 520px at 82% -12%, rgba(27,127,108,.18), transparent 70%),
    radial-gradient(760px 440px at 10% 2%, rgba(242,184,75,.09), transparent 68%);
  background-repeat:no-repeat;
  color:var(--paper);
  font-family:var(--font-sans);
  font-size:var(--fs-16);
  font-weight:400;
  line-height:1.8;
  letter-spacing:.01em;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
p{color:var(--paper-dim);}
strong{font-weight:700;color:var(--paper);}
::selection{background:var(--amber);color:var(--ink-900);}

.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

:focus-visible{
  outline:2px solid var(--amber-soft);
  outline-offset:3px;
  border-radius:4px;
}

/* ---------- 04. 跳转链接 ---------- */
.skip-link{
  position:fixed;
  top:10px;
  left:10px;
  z-index:300;
  padding:10px 18px;
  border-radius:999px;
  background:var(--amber);
  color:var(--ink-900);
  font-size:var(--fs-14);
  font-weight:700;
  text-decoration:none;
  transform:translateY(-180%);
  transition:transform .22s var(--ease);
}
.skip-link:focus,
.skip-link:focus-visible{transform:translateY(0);}

/* ---------- 05. 滚动进度 ---------- */
.rail-progress{
  position:fixed;
  top:0;
  left:0;
  right:0;
  z-index:90;
  height:2px;
  pointer-events:none;
  background:rgba(36,64,90,.35);
}
.rail-progress__bar{
  display:block;
  width:100%;
  height:100%;
  transform:scaleX(0);
  transform-origin:0 50%;
  background:linear-gradient(90deg,var(--amber) 0%,var(--amber-soft) 42%,var(--hit) 100%);
}

/* ---------- 06. 头部：移动端顶栏 ---------- */
.site-header{
  position:sticky;
  top:0;
  z-index:80;
  background:rgba(7,19,31,.93);
  border-bottom:1px solid var(--line);
  backdrop-filter:blur(14px);
  -webkit-backdrop-filter:blur(14px);
}
.header-rail{
  display:flex;
  flex-wrap:nowrap;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  min-height:var(--header-h);
  padding:10px 16px;
}
.brand-block{display:flex;align-items:center;min-width:0;}
.brand-mark{
  display:inline-flex;
  align-items:center;
  gap:10px;
  text-decoration:none;
  color:var(--paper);
}
.brand-mark__glyph{
  flex:0 0 auto;
  display:grid;
  place-items:center;
  width:34px;
  height:34px;
  border:1px solid var(--line);
  border-radius:8px;
  background:linear-gradient(150deg,rgba(242,184,75,.24),rgba(57,208,176,.10));
  color:var(--amber-soft);
  font-size:16px;
  font-weight:800;
  line-height:1;
}
.brand-mark__text{display:flex;flex-direction:column;gap:1px;min-width:0;}
.brand-mark__name{
  font-size:17px;
  font-weight:800;
  line-height:1.2;
  letter-spacing:.04em;
}
.brand-mark__line{
  font-size:10.5px;
  line-height:1.4;
  letter-spacing:.10em;
  color:var(--mist);
}
.brand-status{display:none;}

/* ---------- 07. 折叠按钮 ---------- */
.nav-toggle{
  display:inline-flex;
  align-items:center;
  gap:9px;
  padding:8px 14px;
  border:1px solid var(--line);
  border-radius:999px;
  background:rgba(13,34,54,.7);
  color:var(--paper);
  font-size:var(--fs-14);
  font-weight:600;
  cursor:pointer;
  transition:border-color .2s var(--ease),color .2s var(--ease),background-color .2s var(--ease);
}
.nav-toggle:hover{border-color:var(--amber);color:var(--amber-soft);}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px;}
.nav-toggle__bars span{
  display:block;
  height:1.5px;
  width:100%;
  border-radius:2px;
  background:currentColor;
  transition:transform .22s var(--ease),opacity .22s var(--ease);
}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:nth-child(1){transform:translateY(5.5px) 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(-5.5px) rotate(-45deg);}
.nav-toggle__text{white-space:nowrap;}

/* ---------- 08. 导航：移动端抽屉 ---------- */
.site-nav{
  position:fixed;
  top:var(--header-h);
  left:0;
  right:0;
  z-index:79;
  display:flex;
  flex-direction:column;
  max-height:calc(100vh - var(--header-h));
  overflow-y:auto;
  padding:18px 18px 26px;
  background:linear-gradient(180deg,var(--ink-800),var(--ink-900));
  border-bottom:1px solid var(--line);
  box-shadow:0 26px 48px -30px rgba(0,0,0,.95);
  opacity:0;
  visibility:hidden;
  pointer-events:none;
  transform:translateY(-10px);
  transition:opacity .22s var(--ease),transform .22s var(--ease),visibility .22s;
}
.site-nav[data-open="true"]{
  opacity:1;
  visibility:visible;
  pointer-events:auto;
  transform:translateY(0);
}
.site-nav__label{
  margin:0;
  font-size:11px;
  letter-spacing:.20em;
  color:var(--mist);
  text-transform:uppercase;
}
.site-nav__list{
  display:flex;
  flex-direction:column;
  gap:2px;
  margin-top:12px;
}
.nav-link{
  display:flex;
  align-items:baseline;
  gap:14px;
  padding:11px 12px 11px 14px;
  border-left:2px solid transparent;
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  color:var(--mist);
  font-size:var(--fs-16);
  font-weight:500;
  line-height:1.5;
  text-decoration:none;
  transition:color .18s var(--ease),background-color .18s var(--ease),border-color .18s var(--ease);
}
.nav-link__no{font-size:11px;letter-spacing:.10em;color:var(--line);transition:color .18s var(--ease);}
.nav-link__text{min-width:0;}
.nav-link:hover{color:var(--paper);background:rgba(244,247,250,.05);}
.nav-link:hover .nav-link__no{color:var(--mist);}
.nav-link[aria-current="page"]{
  color:var(--paper);
  border-left-color:var(--amber);
  background:linear-gradient(90deg,var(--amber-dim),transparent 84%);
}
.nav-link[aria-current="page"] .nav-link__no{color:var(--amber);}

.rail-meta{
  display:flex;
  flex-direction:column;
  gap:12px;
  margin-top:18px;
  padding-top:18px;
  border-top:1px solid var(--line-soft);
}
.rail-meta__hint{
  margin:0;
  font-family:var(--font-mono);
  font-size:11.5px;
  line-height:1.65;
  letter-spacing:.04em;
  color:var(--mist);
}
.rail-meta__contact{
  margin:0;
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.12em;
  color:var(--hit);
}

/* ---------- 09. 桌面端：左侧轨道 ---------- */
@media (min-width:1024px){
  body{padding-left:var(--rail-w);}

  .site-header{
    position:fixed;
    top:0;
    left:0;
    bottom:0;
    width:var(--rail-w);
    border-bottom:0;
    border-right:1px solid var(--line);
    background:linear-gradient(180deg,#0A1A2B 0%,#07131F 48%,#0B1F32 100%);
    backdrop-filter:none;
    -webkit-backdrop-filter:none;
  }
  .header-rail{
    flex-direction:column;
    align-items:stretch;
    justify-content:flex-start;
    gap:0;
    height:100%;
    min-height:100%;
    padding:28px 22px 22px;
    overflow-y:auto;
  }
  .brand-block{display:block;}
  .brand-mark__glyph{
    width:42px;
    height:42px;
    font-size:19px;
    border-radius:10px;
  }
  .brand-mark__name{font-size:var(--fs-20);letter-spacing:.05em;}
  .brand-mark__line{font-size:11px;letter-spacing:.14em;}
  .brand-status{
    display:flex;
    align-items:center;
    gap:8px;
    margin-top:18px;
  }
  .status-dot{
    display:block;
    width:6px;
    height:6px;
    flex:0 0 auto;
    border-radius:50%;
    background:var(--hit);
    box-shadow:0 0 0 3px var(--hit-dim);
  }
  .status-label{
    font-family:var(--font-mono);
    font-size:11px;
    letter-spacing:.10em;
    color:var(--mist);
    white-space:nowrap;
  }
  .nav-toggle{display:none;}

  .site-nav{
    position:static;
    flex:1 1 auto;
    display:flex;
    flex-direction:column;
    max-height:none;
    overflow:visible;
    margin-top:30px;
    padding:0;
    background:none;
    border:0;
    box-shadow:none;
    opacity:1;
    visibility:visible;
    pointer-events:auto;
    transform:none;
  }
  .site-nav__list{margin-top:14px;}
  .nav-link{
    padding:10px 10px 10px 12px;
    font-size:15px;
  }
  .rail-meta{margin-top:auto;padding-top:20px;}
}

/* ---------- 10. 页脚 ---------- */
.site-footer{
  position:relative;
  overflow:hidden;
  margin-top:clamp(48px,8vw,96px);
  padding-top:clamp(36px,5vw,64px);
  border-top:1px solid var(--line);
  background:linear-gradient(180deg,#081826 0%,#061019 72%,#050D15 100%);
}
.site-footer::before{
  content:"";
  position:absolute;
  top:-40%;
  right:-12%;
  width:520px;
  height:520px;
  pointer-events:none;
  background:radial-gradient(circle,rgba(57,208,176,.10),transparent 66%);
}
.footer-inner{
  position:relative;
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(26px,3.4vw,40px);
  max-width:var(--content-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.footer-brand__mark{
  display:inline-flex;
  align-items:center;
  gap:11px;
  text-decoration:none;
  color:var(--paper);
}
.footer-brand__glyph{
  flex:0 0 auto;
  display:grid;
  place-items:center;
  width:36px;
  height:36px;
  border:1px solid var(--line);
  border-radius:9px;
  background:linear-gradient(150deg,rgba(242,184,75,.22),rgba(57,208,176,.10));
  color:var(--amber-soft);
  font-size:17px;
  font-weight:800;
  line-height:1;
}
.footer-brand__line{font-size:16px;font-weight:800;letter-spacing:.03em;line-height:1.4;}
.footer-brand__note{
  margin-top:16px;
  max-width:34ch;
  font-size:var(--fs-14);
  line-height:1.75;
  color:var(--mist);
}
.footer-brand__stamp{
  margin-top:14px;
  font-size:11.5px;
  letter-spacing:.10em;
  color:var(--hit);
}
.footer-col__title{
  margin:0 0 14px;
  font-size:11.5px;
  font-weight:500;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--amber);
}
.footer-list{display:flex;flex-direction:column;gap:10px;}
.footer-list__row{display:grid;grid-template-columns:1fr;gap:2px;}
.footer-key{
  font-size:10.5px;
  letter-spacing:.16em;
  color:var(--mist);
  text-transform:uppercase;
}
.footer-val{
  font-size:var(--fs-14);
  line-height:1.65;
  color:var(--paper-dim);
  word-break:break-word;
}
.footer-link{
  display:inline-block;
  padding-bottom:1px;
  border-bottom:1px solid transparent;
  font-size:var(--fs-14);
  color:var(--paper-dim);
  text-decoration:none;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-link:hover,
.footer-link:focus-visible{
  color:var(--amber);
  border-bottom-color:rgba(242,184,75,.55);
}
.footer-base{
  position:relative;
  display:flex;
  flex-wrap:wrap;
  align-items:flex-start;
  justify-content:space-between;
  gap:12px 28px;
  max-width:var(--content-max);
  margin:clamp(28px,4vw,44px) auto 0;
  padding:20px var(--gutter) 28px;
  border-top:1px solid var(--line-soft);
}
.footer-note{
  max-width:62ch;
  margin:0;
  font-size:13px;
  line-height:1.75;
  color:var(--mist);
}
.footer-meta{
  margin:0;
  font-size:11.5px;
  line-height:1.7;
  letter-spacing:.08em;
  color:var(--mist);
}

@media (min-width:720px){
  .footer-inner{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (min-width:1024px){
  .footer-inner{grid-template-columns:1.6fr 1fr 1.25fr .95fr;}
}

/* ---------- 11. 通用结构 ---------- */
.container{
  width:100%;
  max-width:var(--content-max);
  margin-inline:auto;
  padding-inline:var(--gutter);
}
.container--narrow{max-width:860px;}
.section{padding-block:clamp(40px,6vw,76px);}
.section--tight{padding-block:clamp(22px,3vw,36px);}
.section--rule{border-top:1px solid var(--line);}

.section-head{
  display:flex;
  flex-wrap:wrap;
  align-items:flex-end;
  justify-content:space-between;
  gap:16px 32px;
  margin-bottom:clamp(20px,3vw,34px);
}
.section-head__text{max-width:62ch;}

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:10px;
  margin:0 0 14px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--amber);
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;}

.display-1{
  margin:0;
  font-size:clamp(38px,7vw,72px);
  font-weight:900;
  font-stretch:87.5%;
  line-height:1.02;
  letter-spacing:-.02em;
  color:var(--paper);
}
.display-2{
  margin:0;
  font-size:clamp(26px,4vw,40px);
  font-weight:800;
  font-stretch:90%;
  line-height:1.14;
  letter-spacing:-.01em;
  color:var(--paper);
}
.lede{
  max-width:60ch;
  margin-top:18px;
  font-size:clamp(16px,1.35vw,20px);
  line-height:1.78;
  color:var(--paper-dim);
}
.rule{height:1px;border:0;background:var(--line-soft);margin:0;}

.split{
  display:grid;
  grid-template-columns:1fr;
  gap:clamp(20px,3vw,40px);
}
@media (min-width:960px){
  .split{grid-template-columns:minmax(0,1.75fr) minmax(0,1fr);}
  .split--aside-first{grid-template-columns:minmax(0,1fr) minmax(0,1.75fr);}
}

.grid{display:grid;gap:clamp(16px,2.2vw,26px);grid-template-columns:1fr;}
@media (min-width:720px){
  .grid--2{grid-template-columns:repeat(2,minmax(0,1fr));}
  .grid--3{grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media (min-width:1024px){
  .grid--3{grid-template-columns:repeat(3,minmax(0,1fr));}
}

/* ---------- 12. 正文排版 ---------- */
.prose{max-width:68ch;}
.prose h2{
  margin:2.1em 0 .55em;
  font-size:clamp(22px,3vw,28px);
  font-weight:800;
  line-height:1.32;
  letter-spacing:-.01em;
  color:var(--paper);
}
.prose h3{
  margin:1.7em 0 .4em;
  font-size:var(--fs-20);
  font-weight:700;
  line-height:1.45;
  color:var(--paper);
}
.prose p{margin:0 0 1.1em;color:var(--paper-dim);}
.prose ul{list-style:disc;}
.prose ol{list-style:decimal;}
.prose ul,.prose ol{padding-left:1.3em;margin:0 0 1.2em;}
.prose li{margin-bottom:.45em;color:var(--paper-dim);}
.prose a{
  color:var(--amber-soft);
  text-decoration:underline;
  text-underline-offset:3px;
  text-decoration-color:rgba(242,184,75,.45);
  transition:color .18s var(--ease),text-decoration-color .18s var(--ease);
}
.prose a:hover{color:var(--amber);text-decoration-color:var(--amber);}
.prose code{
  padding:2px 6px;
  border:1px solid var(--line);
  border-radius:4px;
  font-family:var(--font-mono);
  font-size:.9em;
  color:var(--hit);
}

/* ---------- 13. 按钮 ---------- */
.btn{
  --btn-bg:transparent;
  --btn-fg:var(--paper);
  --btn-bd:var(--line);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  min-height:44px;
  padding:12px 22px;
  border:1px solid var(--btn-bd);
  border-radius:999px;
  background:var(--btn-bg);
  color:var(--btn-fg);
  font-family:var(--font-sans);
  font-size:15px;
  font-weight:600;
  line-height:1.4;
  text-decoration:none;
  cursor:pointer;
  transition:background-color .2s var(--ease),color .2s var(--ease),border-color .2s var(--ease),transform .2s var(--ease);
}
.btn:hover{transform:translateY(-1px);}
.btn--amber{
  --btn-bg:var(--amber);
  --btn-fg:var(--ink-900);
  --btn-bd:var(--amber);
  box-shadow:0 14px 32px -20px rgba(242,184,75,.9);
}
.btn--amber:hover{--btn-bg:var(--amber-soft);--btn-bd:var(--amber-soft);}
.btn--ghost:hover{--btn-bd:var(--amber);--btn-fg:var(--amber-soft);background:rgba(242,184,75,.08);}
.btn--block{width:100%;}
.btn--sm{min-height:36px;padding:8px 14px;font-size:13px;}

/* ---------- 14. 标签 ---------- */
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:3px 9px;
  border:1px solid var(--line);
  border-radius:4px;
  background:rgba(244,247,250,.03);
  font-family:var(--font-mono);
  font-size:11.5px;
  line-height:1.6;
  letter-spacing:.06em;
  color:var(--mist);
}
.tag--amber{color:var(--amber);border-color:rgba(242,184,75,.5);background:var(--amber-dim);}
.tag--hit{color:var(--hit);border-color:rgba(57,208,176,.5);background:var(--hit-dim);}
.tag--alert{color:var(--alert);border-color:rgba(227,106,94,.5);background:rgba(227,106,94,.12);}

/* ---------- 15. 资料卡 ---------- */
.doc-card{
  display:block;
  padding:22px;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:linear-gradient(165deg,rgba(13,34,54,.96),rgba(9,25,40,.92));
  box-shadow:0 20px 44px -34px rgba(0,0,0,.95);
  color:inherit;
  text-decoration:none;
  transition:border-color .22s var(--ease),transform .22s var(--ease),box-shadow .22s var(--ease);
}
.doc-card:hover,
.doc-card:focus-visible{
  border-color:rgba(242,184,75,.55);
  transform:translateY(-2px);
  box-shadow:0 26px 52px -34px rgba(0,0,0,1);
}
.doc-card__meta{
  display:block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.14em;
  color:var(--mist);
  text-transform:uppercase;
}
.doc-card__title{
  margin:10px 0 8px;
  font-size:var(--fs-20);
  font-weight:700;
  line-height:1.4;
  color:var(--paper);
}
.doc-card__text{
  margin:0;
  font-size:var(--fs-14);
  line-height:1.75;
  color:var(--mist);
}

/* ---------- 16. 提示条 ---------- */
.callout{
  padding:16px 18px;
  border-left:2px solid var(--amber);
  border-radius:0 var(--radius-sm) var(--radius-sm) 0;
  background:rgba(13,34,54,.72);
  font-size:var(--fs-14);
  line-height:1.8;
  color:var(--mist);
}
.callout--hit{border-left-color:var(--hit);}

/* ---------- 17. 面包屑 ---------- */
.breadcrumb{padding-block:18px;}
.breadcrumb__list{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--mist);
}
.breadcrumb__item{display:flex;align-items:center;gap:8px;}
.breadcrumb__item + .breadcrumb__item::before{content:"/";color:var(--line);}
.breadcrumb__link{color:var(--mist);text-decoration:none;transition:color .18s var(--ease);}
.breadcrumb__link:hover{color:var(--amber);}
.breadcrumb__item[aria-current="page"]{color:var(--paper);}

/* ---------- 18. 图片容器基座 ---------- */
.media-frame{
  position:relative;
  display:block;
  overflow:hidden;
  width:100%;
  aspect-ratio:16 / 9;
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:
    radial-gradient(120% 100% at 10% 0%,rgba(242,184,75,.16),transparent 55%),
    radial-gradient(120% 120% at 92% 100%,rgba(57,208,176,.14),transparent 62%),
    #0B1D2E;
}
.media-frame > img,
.media-frame > picture > img,
.media-frame > svg{
  width:100%;
  height:100%;
  object-fit:cover;
}
.media-frame--wide{aspect-ratio:21 / 9;}
.media-frame--4x3{aspect-ratio:4 / 3;}
.media-frame--1x1{aspect-ratio:1 / 1;}
.media-frame__caption{
  margin:10px 0 0;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:.06em;
  color:var(--mist);
}

/* ---------- 19. 减少动态 ---------- */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  *,
  *::before,
  *::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
  }
  .skip-link{transition:none;}
}