/* ============ 01. RESET ============ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0}
h1,h2,h3,h4,h5,h6,p,figure,blockquote{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
a{color:inherit;text-decoration:none}
img,svg{max-width:100%;display:block}
button{font:inherit;color:inherit}
table{border-collapse:collapse;width:100%}

/* ============ 02. TOKENS ============ */
:root{
  --ink:#071A14;
  --ink-lift:#0C2A20;
  --moss:#4F6F52;
  --stone:#8A8F86;
  --paper:#F2EDE3;
  --cyan:#38F2D0;
  --cyan-soft:#B8FFF2;
  --flare:#FF4D2E;
  --clay:#A44A35;
  --black:#030807;
  --line:rgba(138,143,134,.30);
  --line-strong:rgba(79,111,82,.60);
  --shadow-hard:6px 6px 0 rgba(3,8,7,.92);
  --font-sans:'Noto Sans SC','Source Han Sans SC','PingFang SC','Microsoft YaHei',sans-serif;
  --font-mono:'JetBrains Mono','Roboto Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  --maxw:1320px;
  --header-h:64px;
  --ease:cubic-bezier(.2,.7,.3,1);
}

/* ============ 03. BASE / 中文排版 ============ */
body{
  font-family:var(--font-sans);
  font-size:15px;
  line-height:1.55;
  color:var(--paper);
  background:
    radial-gradient(1100px 620px at 88% -10%, rgba(56,242,208,.10), transparent 62%),
    radial-gradient(900px 520px at -8% 8%, rgba(255,77,46,.09), transparent 64%),
    linear-gradient(180deg,#071A14 0%,#05120E 46%,#030807 100%);
  background-attachment:fixed;
  overflow-x:hidden;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
body::after{
  content:"";
  position:fixed;
  inset:0;
  z-index:1;
  pointer-events:none;
  opacity:.10;
  background-image:
    repeating-linear-gradient(0deg, rgba(184,255,242,.14) 0 1px, transparent 1px 4px);
}
h1,h2,h3,h4,h5,h6{font-weight:700;line-height:1.14;letter-spacing:-.01em}
p{letter-spacing:.01em}
::selection{background:var(--cyan);color:var(--black)}
#main-content{display:block;scroll-margin-top:calc(var(--header-h) + 18px)}

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

/* ============ 04. 工具与容器 ============ */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:clamp(16px,4vw,48px)}
.section{padding-block:clamp(36px,5.5vw,80px)}
.section--tight{padding-block:clamp(24px,3.5vw,48px)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.eyebrow{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";width:18px;height:1px;background:currentColor}
.index-num{font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;color:var(--stone)}

/* ============ 05. 网格 ============ */
.grid{display:grid;gap:clamp(14px,2vw,24px)}
.grid--2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid--3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid--split{grid-template-columns:minmax(0,1.55fr) minmax(0,1fr)}
@media (max-width:860px){
  .grid--2,.grid--3,.grid--split{grid-template-columns:minmax(0,1fr)}
}

/* ============ 06. 跳过链接 ============ */
.skip-link{
  position:fixed;
  top:10px;
  left:12px;
  z-index:200;
  padding:10px 16px;
  background:var(--cyan);
  color:var(--black);
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  border:1px solid var(--black);
  box-shadow:4px 4px 0 var(--black);
  transform:translateY(-160%);
  transition:transform .18s var(--ease);
}
.skip-link:focus{transform:translateY(0)}

/* ============ 07. 页头 ============ */
.site-header{
  position:sticky;
  top:0;
  z-index:60;
  background:linear-gradient(180deg,#08211A 0%,#06170F 72%,#05110C 100%);
  border-bottom:1px solid var(--line-strong);
  box-shadow:0 20px 44px -32px #000;
}
.site-header::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(115deg, transparent 0 63%, rgba(56,242,208,.07) 63% 63.25%, transparent 63.25%),
    repeating-linear-gradient(90deg, rgba(242,237,227,.035) 0 1px, transparent 1px 7px);
}
.header-inner{
  position:relative;
  z-index:1;
  display:grid;
  grid-template-columns:minmax(190px,238px) 1fr;
  align-items:center;
  gap:clamp(12px,2vw,30px);
  min-height:var(--header-h);
  padding-block:10px;
}

/* 品牌块 */
.brand{display:flex;flex-direction:column;gap:4px;min-width:0}
.brand__link{
  display:flex;
  flex-direction:column;
  gap:2px;
  padding-left:11px;
  border-left:3px solid var(--cyan);
}
.brand__mark{
  font-size:clamp(18px,2.1vw,22px);
  font-weight:700;
  letter-spacing:.08em;
  line-height:1.08;
  color:var(--paper);
}
.brand__link:hover .brand__mark{color:var(--cyan-soft)}
.brand__meta{
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.18em;
  color:var(--stone);
}
.header-status{display:flex;align-items:center;gap:6px;padding-left:14px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.07em;color:var(--cyan-soft)}
.status-dot{
  width:6px;height:6px;flex:0 0 6px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(56,242,208,.16);
  animation:status-pulse 2.2s ease-in-out infinite;
}
@keyframes status-pulse{
  0%,100%{opacity:1;transform:scale(1)}
  50%{opacity:.4;transform:scale(.78)}
}
.status-text{opacity:.92;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* 移动按钮 */
.nav-toggle{
  display:none;
  align-items:center;
  gap:9px;
  min-height:44px;
  padding:0 13px;
  background:rgba(12,42,32,.7);
  border:1px solid var(--line-strong);
  border-radius:2px;
  cursor:pointer;
  color:var(--paper);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.16em;
}
.nav-toggle:hover{border-color:var(--cyan);color:var(--cyan-soft)}
.nav-toggle__bars{display:flex;flex-direction:column;gap:4px;width:16px}
.nav-toggle__bars span{display:block;height:2px;background:var(--cyan);transition:transform .2s var(--ease)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child{transform:translateY(3px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child{transform:translateY(-3px) rotate(-45deg)}

/* 命令栏导航 */
.command-bar{display:flex;align-items:center;justify-content:space-between;gap:14px;min-width:0}
.command-bar__list{display:flex;align-items:center;gap:2px;flex-wrap:wrap;min-width:0}
.command-bar__item{display:flex}
.nav-link{
  display:flex;
  align-items:baseline;
  gap:6px;
  min-height:40px;
  padding:9px 12px;
  border:1px solid transparent;
  border-radius:2px;
  color:rgba(242,237,227,.78);
  transition:background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.nav-link__index{font-family:var(--font-mono);font-size:10px;letter-spacing:.1em;color:var(--stone)}
.nav-link__label{font-size:13px;font-weight:500;letter-spacing:.06em;white-space:nowrap}
.nav-link:hover{color:var(--cyan-soft);background:rgba(56,242,208,.07);border-color:var(--line)}
.nav-link:hover .nav-link__index{color:var(--cyan)}
.nav-link[aria-current="page"]{
  color:var(--cyan-soft);
  background:rgba(56,242,208,.10);
  border-color:rgba(56,242,208,.45);
  box-shadow:inset 0 -2px 0 var(--cyan);
}
.nav-link[aria-current="page"] .nav-link__index{color:var(--cyan)}
.command-bar__foot{display:flex;align-items:center;flex:0 0 auto}

/* 滚动进度 */
.scroll-meter{
  position:absolute;
  left:0;right:0;bottom:-1px;
  height:2px;
  background:rgba(79,111,82,.26);
  overflow:hidden;
}
.scroll-meter__bar{
  display:block;
  width:0;
  height:100%;
  background:linear-gradient(90deg,var(--cyan) 0%,var(--cyan-soft) 55%,var(--flare) 100%);
}

/* ============ 08. 按钮 ============ */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  min-height:44px;
  padding:0 18px;
  border:1px solid transparent;
  border-radius:2px;
  font-family:var(--font-sans);
  font-size:13px;
  font-weight:600;
  letter-spacing:.07em;
  cursor:pointer;
  transition:transform .18s var(--ease),box-shadow .18s var(--ease),background-color .18s var(--ease),color .18s var(--ease),border-color .18s var(--ease);
}
.btn--action{
  background:var(--flare);
  color:#170604;
  border-color:var(--black);
  box-shadow:4px 4px 0 var(--black);
}
.btn--action:hover{background:#FF6A4D;transform:translate(-1px,-1px);box-shadow:6px 6px 0 var(--black)}
.btn--action:active{transform:translate(1px,1px);box-shadow:2px 2px 0 var(--black)}
.btn--ghost{
  background:transparent;
  color:var(--paper);
  border-color:var(--line-strong);
}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan-soft);background:rgba(56,242,208,.07)}
.btn--small{min-height:36px;padding:0 13px;font-size:12px;letter-spacing:.05em}

/* ============ 09. 面包屑 ============ */
.breadcrumbs{padding-block:16px 0}
.breadcrumb-list{display:flex;flex-wrap:wrap;align-items:center;gap:8px;font-family:var(--font-mono);font-size:11px;letter-spacing:.09em;color:var(--stone)}
.breadcrumb-list li{display:flex;align-items:center;gap:8px}
.breadcrumb-list li+li::before{content:"/";color:var(--clay)}
.breadcrumb-link{color:rgba(242,237,227,.72);border-bottom:1px solid transparent}
.breadcrumb-link:hover{color:var(--cyan);border-bottom-color:currentColor}
.breadcrumb-current{color:var(--cyan-soft)}

/* ============ 10. 面板 / 标签 ============ */
.panel{
  position:relative;
  padding:clamp(16px,2.4vw,28px);
  background:linear-gradient(158deg,var(--ink-lift) 0%,#081C15 72%,var(--ink) 100%);
  border:1px solid var(--line-strong);
  box-shadow:var(--shadow-hard);
}
.panel--paper{
  background:linear-gradient(158deg,#F2EDE3 0%,#E5DECF 100%);
  color:#10221B;
  border-color:var(--black);
  box-shadow:6px 6px 0 rgba(3,8,7,.9);
}
.tag{
  display:inline-flex;
  align-items:center;
  gap:6px;
  padding:4px 9px;
  border:1px solid var(--line-strong);
  background:rgba(12,42,32,.65);
  color:rgba(242,237,227,.80);
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.1em;
}
.tag--live{border-color:rgba(56,242,208,.5);background:rgba(56,242,208,.09);color:var(--cyan-soft)}
.tag--alert{border-color:rgba(255,77,46,.5);background:rgba(255,77,46,.11);color:#FFC9BE}

/* ============ 11. 图片容器 ============ */
.media-frame{
  position:relative;
  display:block;
  aspect-ratio:16/10;
  overflow:hidden;
  border:1px solid var(--line-strong);
  background:
    repeating-linear-gradient(135deg,#0C2A20 0 12px,#09201A 12px 24px);
  box-shadow:var(--shadow-hard);
}
.media-frame__media{width:100%;height:100%;object-fit:cover;filter:saturate(1.05) contrast(1.06)}
.media-frame__caption{
  position:absolute;
  left:0;right:0;bottom:0;
  padding:8px 10px;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.12em;
  color:var(--cyan-soft);
  background:linear-gradient(180deg,transparent,rgba(3,8,7,.88));
}
.media-frame--wide{aspect-ratio:21/9}
.media-frame--tall{aspect-ratio:3/4}
.media-frame--square{aspect-ratio:1/1}
.media-frame--slice{clip-path:polygon(0 0,100% 0,100% calc(100% - 22px),calc(100% - 22px) 100%,0 100%)}

/* ============ 12. 章节索引高亮 ============ */
[data-spy-link]{
  display:flex;
  align-items:center;
  gap:8px;
  padding:8px 10px;
  border-left:2px solid transparent;
  color:rgba(242,237,227,.66);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.1em;
  transition:color .18s var(--ease),border-color .18s var(--ease),background-color .18s var(--ease);
}
[data-spy-link]:hover{color:var(--cyan-soft)}
[data-spy-link].is-active{
  color:var(--cyan-soft);
  border-left-color:var(--cyan);
  background:rgba(56,242,208,.08);
}

/* ============ 13. 页脚 ============ */
.site-footer{
  position:relative;
  overflow:hidden;
  margin-top:clamp(48px,7vw,96px);
  padding-block:clamp(32px,5vw,60px) 26px;
  background:linear-gradient(180deg,#06150F 0%,#040C09 58%,var(--black) 100%);
  border-top:1px solid var(--line-strong);
}
.site-footer::before{
  content:"";
  position:absolute;
  inset:0;
  pointer-events:none;
  background-image:
    linear-gradient(0deg, transparent 0 68%, rgba(79,111,82,.16) 68% 68.3%, transparent 68.3%),
    repeating-linear-gradient(90deg, rgba(242,237,227,.03) 0 1px, transparent 1px 9px);
}
.site-footer::after{
  content:"WM";
  position:absolute;
  right:-2%;
  top:2%;
  font-family:var(--font-mono);
  font-size:clamp(120px,20vw,260px);
  line-height:1;
  letter-spacing:-.06em;
  color:rgba(79,111,82,.11);
  pointer-events:none;
}
.footer-inner{position:relative;z-index:1}
.footer-top{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1.18fr);
  gap:clamp(24px,4vw,56px);
}
.footer-brand__index{font-size:10px;letter-spacing:.2em;color:var(--stone)}
.footer-brand__mark{
  margin-top:10px;
  font-size:clamp(2rem,4.6vw,3.2rem);
  font-weight:200;
  line-height:1;
  letter-spacing:.02em;
  color:var(--paper);
}
.footer-brand__mark::after{
  content:"";
  display:inline-block;
  width:9px;
  height:9px;
  margin-left:10px;
  background:var(--cyan);
  transform:translateY(-14px);
}
.footer-brand__line{
  margin-top:12px;
  max-width:24ch;
  padding-left:12px;
  border-left:2px solid var(--moss);
  font-size:13px;
  letter-spacing:.06em;
  color:rgba(242,237,227,.66);
}
.footer-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:clamp(16px,2.5vw,32px)}
.footer-col__title{
  margin-bottom:10px;
  padding-bottom:8px;
  border-bottom:1px solid rgba(56,242,208,.22);
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:500;
  letter-spacing:.16em;
  color:var(--cyan);
}
.footer-list{display:flex;flex-direction:column;gap:8px}
.footer-list--contact{gap:12px}
.footer-link{
  display:inline-flex;
  align-items:center;
  gap:6px;
  min-height:28px;
  font-size:13px;
  color:rgba(242,237,227,.74);
  border-bottom:1px solid transparent;
  transition:color .18s var(--ease),border-color .18s var(--ease);
}
.footer-link::before{content:"›";color:var(--clay);font-family:var(--font-mono);font-size:12px}
.footer-link:hover{color:var(--cyan-soft);border-bottom-color:rgba(56,242,208,.5)}
.contact-item{display:flex;flex-direction:column;gap:3px}
.contact-item__key{font-family:var(--font-mono);font-size:10px;letter-spacing:.15em;color:var(--stone)}
.contact-item__value{font-size:13px;color:rgba(242,237,227,.84);overflow-wrap:anywhere}
.footer-note{
  margin-top:clamp(20px,3vw,34px);
  max-width:80ch;
  padding-left:12px;
  border-left:2px solid var(--clay);
  font-size:12px;
  line-height:1.7;
  color:rgba(138,143,134,.95);
}
.footer-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:12px 24px;
  margin-top:24px;
  padding-top:16px;
  border-top:1px solid rgba(138,143,134,.24);
}
.footer-copy{font-family:var(--font-mono);font-size:11px;letter-spacing:.07em;color:rgba(138,143,134,.95)}
.footer-legal{display:flex;flex-wrap:wrap;gap:16px}
.footer-legal .footer-link{min-height:24px;font-size:12px;color:rgba(138,143,134,.95)}
.footer-legal .footer-link::before{content:"";display:none}

/* ============ 14. 响应式：页头 ============ */
@media (max-width:959px){
  .header-inner{grid-template-columns:1fr auto;padding-block:9px}
  .brand{grid-column:1;grid-row:1}
  .nav-toggle{grid-column:2;grid-row:1;justify-self:end}
  .has-js .nav-toggle{display:inline-flex}
  .command-bar{grid-column:1/-1;grid-row:2;display:flex;flex-direction:column;align-items:stretch;gap:10px;margin-top:10px;padding-top:10px;border-top:1px dashed var(--line)}
  .has-js .command-bar{display:none}
  .has-js .command-bar[data-open="true"]{display:flex}
  .command-bar__list{flex-direction:column;align-items:stretch;gap:2px}
  .nav-link{justify-content:space-between;min-height:44px;padding:11px 12px;border-bottom:1px solid rgba(138,143,134,.16)}
  .nav-link__label{margin-left:auto;font-size:14px}
  .command-bar__foot{width:100%}
  .command-bar__foot .btn{width:100%}
  .header-status{font-size:10px;padding-left:14px}
}
@media (max-width:420px){
  .brand__meta{letter-spacing:.12em}
  .status-text{max-width:46vw}
}

/* ============ 15. 响应式：页脚 ============ */
@media (max-width:900px){
  .footer-top{grid-template-columns:minmax(0,1fr)}
  .footer-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .footer-col--contact{grid-column:1/-1}
}
@media (max-width:560px){
  .footer-grid{grid-template-columns:minmax(0,1fr)}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .footer-brand__mark{font-size:clamp(1.9rem,9vw,2.6rem)}
}

/* ============ 16. 动效降级 ============ */
@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;
  }
}