*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--bar-h) + 16px)}
body,h1,h2,h3,h4,p,figure,blockquote,dl,dd,ul,ol{margin:0}
ul,ol{padding:0;list-style:none}
img,svg,video{display:block;max-width:100%}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{line-height:1.25;font-weight:800}

:root{
  --ink:#0A1F1A;
  --stand:#111514;
  --moss:#2C4438;
  --rock:#8B948B;
  --cream:#F2EDE3;
  --amber:#E3A83F;
  --cyan:#51E3D2;
  --clay:#B86A4C;
  --navy:#33506E;
  --mauve:#6E657A;
  --line:rgba(139,148,139,.28);
  --line-strong:rgba(139,148,139,.45);
  --shadow-hard:6px 6px 0 rgba(0,0,0,.55);
  --shadow-hard-sm:3px 3px 0 rgba(0,0,0,.5);
  --font-sans:"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Source Han Sans SC","Noto Sans SC",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:"JetBrains Mono","IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,"Courier New",monospace;
  --gutter:24px;
  --max:1320px;
  --bar-h:68px;
}

body{
  font-family:var(--font-sans);
  font-size:16px;
  line-height:1.85;
  font-weight:400;
  color:var(--cream);
  background-color:var(--ink);
  -webkit-font-smoothing:antialiased;
  min-height:100vh;
  overflow-x:hidden;
}

:focus-visible{outline:3px solid var(--cyan);outline-offset:2px;border-radius:1px}

.skip-link{
  position:absolute;left:12px;top:-72px;z-index:200;
  padding:10px 18px;
  background:var(--amber);color:var(--ink);
  font-weight:800;font-size:14px;letter-spacing:.02em;
  box-shadow:var(--shadow-hard-sm);
  transition:top .18s ease;
}
.skip-link:focus{top:12px}

/* ===== 命令栏 ===== */
.cmdbar{
  position:sticky;top:0;z-index:60;
  background:linear-gradient(180deg,#0D2A23 0%,#0A1F1A 100%);
  border-bottom:2px solid var(--moss);
  box-shadow:0 12px 32px rgba(0,0,0,.45);
}
.cmdbar__inner{
  display:flex;align-items:stretch;gap:8px;
  width:100%;max-width:var(--max);
  height:var(--bar-h);
  margin-inline:auto;padding-inline:var(--gutter);
}

.brand{display:flex;align-items:center;gap:11px;flex:0 0 auto;padding-right:18px}
.brand__mark{
  width:36px;height:36px;display:grid;place-items:center;
  background:var(--amber);color:var(--ink);
  font-family:var(--font-mono);font-weight:700;font-size:12px;letter-spacing:.04em;
  clip-path:polygon(0 0,100% 0,100% 74%,74% 100%,0 100%);
  box-shadow:var(--shadow-hard-sm);
  transition:transform .18s ease;
}
.brand:hover .brand__mark{transform:translateY(-2px)}
.brand__text{display:flex;flex-direction:column;line-height:1.1}
.brand__name{font-size:17px;font-weight:900;letter-spacing:.01em;color:var(--cream)}
.brand__tag{margin-top:4px;font-family:var(--font-mono);font-size:9.5px;letter-spacing:.16em;color:var(--rock);text-transform:uppercase;white-space:nowrap}

.cmdbar__toggle{
  display:none;align-items:center;gap:9px;align-self:center;
  height:38px;padding:0 13px;
  border:2px solid var(--moss);
  color:var(--cream);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  flex:0 0 auto;
  transition:border-color .16s,background .16s;
}
.cmdbar__toggle:hover{border-color:var(--amber);background:rgba(227,168,63,.08)}
.cmdbar__toggle-bars{display:flex;flex-direction:column;gap:3px}
.cmdbar__toggle-bars span{display:block;width:16px;height:2px;background:var(--amber);transition:transform .2s ease,opacity .2s ease}
.cmdbar__toggle[aria-expanded="true"] .cmdbar__toggle-bars span:nth-child(1){transform:translateY(5px) rotate(45deg)}
.cmdbar__toggle[aria-expanded="true"] .cmdbar__toggle-bars span:nth-child(2){opacity:0}
.cmdbar__toggle[aria-expanded="true"] .cmdbar__toggle-bars span:nth-child(3){transform:translateY(-5px) rotate(-45deg)}

.cmdbar__nav{
  flex:1 1 auto;min-width:0;
  display:flex;align-items:stretch;
  border-left:1px solid var(--line);
}
.cmdbar__navlist{display:flex;align-items:stretch;width:100%}
.cmdbar__navitem{display:flex}
.cmdbar__link{
  position:relative;
  display:flex;flex-direction:column;justify-content:center;gap:2px;
  height:100%;padding:0 13px;
  border-right:1px solid rgba(139,148,139,.14);
  color:#C9D2C9;
  transition:color .16s ease,background .16s ease;
}
.cmdbar__index{font-family:var(--font-mono);font-size:9.5px;letter-spacing:.18em;color:var(--rock);transition:color .16s ease}
.cmdbar__label{font-size:13.5px;font-weight:700;letter-spacing:.01em;white-space:nowrap}
.cmdbar__link:hover{color:var(--cream);background:rgba(81,227,210,.07)}
.cmdbar__link:hover .cmdbar__index{color:var(--cyan)}
.cmdbar__link[aria-current="page"]{color:var(--amber);background:rgba(227,168,63,.09)}
.cmdbar__link[aria-current="page"] .cmdbar__index{color:var(--amber)}
.cmdbar__link[aria-current="page"]::after{content:"";position:absolute;left:0;right:0;bottom:0;height:3px;background:var(--amber)}

.cmdbar__aside{
  display:flex;align-items:center;gap:14px;
  padding-left:16px;border-left:1px solid var(--line);
  flex:0 0 auto;
}
.status{display:flex;align-items:center;gap:7px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;color:var(--cyan);white-space:nowrap}
.status__dot{
  width:8px;height:8px;border-radius:50%;flex:0 0 auto;
  background:var(--cyan);
  box-shadow:0 0 0 3px rgba(81,227,210,.18);
  animation:status-pulse 2.6s ease-in-out infinite;
}
@keyframes status-pulse{
  0%,100%{opacity:1;box-shadow:0 0 0 3px rgba(81,227,210,.18)}
  50%{opacity:.5;box-shadow:0 0 0 7px rgba(81,227,210,.04)}
}
.cmdbar__progress{
  position:absolute;left:0;bottom:-2px;width:100%;height:3px;
  background:linear-gradient(90deg,var(--amber),var(--cyan));
  transform:scaleX(0);transform-origin:0 50%;
  transition:transform .08s linear;
  pointer-events:none;
}

/* ===== 按钮 ===== */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:12px 20px;
  border:2px solid var(--rock);
  background:transparent;color:var(--cream);
  font-size:15px;font-weight:700;line-height:1;
  box-shadow:var(--shadow-hard-sm);
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease,color .15s ease,border-color .15s ease;
}
.btn:hover{transform:translate(-2px,-2px);box-shadow:5px 5px 0 rgba(0,0,0,.55)}
.btn:active{transform:translate(0,0);box-shadow:1px 1px 0 rgba(0,0,0,.55)}
.btn--amber{background:var(--amber);border-color:var(--amber);color:var(--ink)}
.btn--cyan{background:var(--cyan);border-color:var(--cyan);color:var(--ink)}
.btn--ghost{background:transparent;border-color:var(--rock);color:var(--cream)}
.btn--ghost:hover{border-color:var(--cyan);color:var(--cyan)}
.btn--sm{padding:8px 14px;font-size:13px}

/* ===== 文本原子 ===== */
.meta{font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;color:var(--rock);text-transform:uppercase}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-family:var(--font-mono);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--cyan)}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--cyan);flex:0 0 auto}
.num{font-family:var(--font-mono);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.rotnote{writing-mode:vertical-rl;text-orientation:mixed;font-family:var(--font-mono);font-size:11px;letter-spacing:.22em;color:var(--rock);text-transform:uppercase}

/* ===== 排版容器 ===== */
.container{width:100%;max-width:var(--max);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:56px}
.section--tight{padding-block:32px}
.rule{height:2px;border:0;background:var(--line)}
.slant{clip-path:polygon(0 0,100% 0,100% calc(100% - 28px),0 100%)}

.prose{font-size:17px;line-height:1.95;color:var(--cream);max-width:72ch}
.prose>*+*{margin-top:1.15em}
.prose h2{font-size:clamp(24px,3vw,32px);font-weight:900;letter-spacing:-.01em;margin-top:1.9em}
.prose h3{font-size:20px;font-weight:800;margin-top:1.5em}
.prose ul li{position:relative;padding-left:22px}
.prose ul li::before{content:"—";position:absolute;left:0;color:var(--amber)}
.prose strong{font-weight:700;color:#FFF9EC}

/* ===== 栅格 ===== */
.grid{display:grid;gap:var(--gutter)}
.grid--split{grid-template-columns:7fr 5fr}
.grid--split-alt{grid-template-columns:5fr 7fr}
.grid--halves{grid-template-columns:1fr 1fr}
.grid--thirds{grid-template-columns:repeat(3,1fr)}

/* ===== 面板 ===== */
.panel{padding:28px;background:var(--stand);border:2px solid var(--moss);box-shadow:var(--shadow-hard)}
.panel--cream{background:var(--cream);border-color:#0A1F1A;color:var(--ink)}
.panel--moss{background:var(--moss);border-color:#3A5748}
.panel--flat{box-shadow:none}
.panel--cream .meta,.panel--cream .eyebrow{color:#4A5A50}
.panel--cream .eyebrow::before{background:#4A5A50}
.panel--cream .prose{color:var(--ink)}

/* ===== 标签 ===== */
.tag{
  display:inline-flex;align-items:center;gap:6px;
  padding:4px 10px;
  font-family:var(--font-mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  border:1px solid var(--rock);color:var(--cyan);
}
.tag--clay{background:var(--clay);border-color:var(--clay);color:var(--cream)}
.tag--navy{background:var(--navy);border-color:var(--navy);color:var(--cream)}
.tag--moss{background:var(--moss);border-color:var(--moss);color:var(--cream)}
.tag--amber{background:var(--amber);border-color:var(--amber);color:var(--ink)}

/* ===== 面包屑 ===== */
.breadcrumb{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-block:22px;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;color:var(--rock)}
.breadcrumb__item{display:inline-flex;align-items:center;gap:8px}
.breadcrumb__sep{color:var(--line-strong)}
.breadcrumb a{color:var(--rock);transition:color .16s ease}
.breadcrumb a:hover{color:var(--cyan)}
.breadcrumb [aria-current="page"]{color:var(--cream)}

/* ===== 目录行 ===== */
.index{border-top:2px solid var(--line-strong)}
.index__row{
  display:grid;grid-template-columns:56px minmax(0,1fr) auto;
  gap:18px;align-items:baseline;
  padding:16px 4px;
  border-bottom:1px solid rgba(139,148,139,.22);
  transition:background .16s ease,padding-left .16s ease;
}
.index__row:hover{background:rgba(227,168,63,.07);padding-left:12px}
.index__num{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--amber)}
.index__title{display:block;font-size:17px;font-weight:700;color:var(--cream);line-height:1.5}
.index__desc{display:block;margin-top:5px;font-size:13.5px;line-height:1.7;color:var(--rock)}

/* ===== 折叠组 ===== */
.fold{border-top:2px solid var(--line)}
.fold:last-child{border-bottom:2px solid var(--line)}
.fold__summary{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:16px 0;cursor:pointer;list-style:none;
  font-size:16.5px;font-weight:700;color:var(--cream);
  transition:color .16s ease;
}
.fold__summary::-webkit-details-marker{display:none}
.fold__summary:hover{color:var(--amber)}
.fold__summary::after{content:"+";font-family:var(--font-mono);font-size:18px;color:var(--amber);flex:0 0 auto}
.fold[open] .fold__summary::after{content:"–"}
.fold__body{padding:0 0 20px;font-size:15.5px;line-height:1.9;color:var(--rock);max-width:74ch}

/* ===== 图片容器 ===== */
.media{position:relative;overflow:hidden;background:var(--moss);border:2px solid var(--moss);box-shadow:var(--shadow-hard-sm)}
.media::after{content:"";position:absolute;inset:0;pointer-events:none;background:linear-gradient(195deg,rgba(81,227,210,.10) 0%,transparent 42%,rgba(10,31,26,.72) 100%)}
.media__img{width:100%;height:100%;object-fit:cover}
.media--16x9{aspect-ratio:16/9}
.media--4x3{aspect-ratio:4/3}
.media--1x1{aspect-ratio:1/1}
.media--wide{aspect-ratio:21/9}
.media--slant{clip-path:polygon(0 0,100% 0,100% 88%,0 100%)}

/* ===== 页脚看台 ===== */
.stand{position:relative;background:var(--stand);border-top:3px solid var(--moss);color:#C9D2C9}
.stand::before{
  content:"";position:absolute;left:0;right:0;top:0;height:4px;
  background:repeating-linear-gradient(90deg,var(--amber) 0 40px,transparent 40px 80px,var(--cyan) 80px 120px,transparent 120px 160px);
  opacity:.5;
}
.stand__inner{width:100%;max-width:var(--max);margin-inline:auto;padding:58px var(--gutter) 28px}
.stand__top{
  display:grid;grid-template-columns:4fr 8fr;gap:40px;
  padding-bottom:36px;border-bottom:1px solid var(--line);
}
.stand__brand{min-width:0}
.stand__mark{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:900;letter-spacing:-.01em;color:var(--cream)}
.stand__mark-box{
  width:30px;height:30px;display:grid;place-items:center;flex:0 0 auto;
  background:var(--amber);color:var(--ink);
  font-family:var(--font-mono);font-size:11px;font-weight:700;
  clip-path:polygon(0 0,100% 0,100% 74%,74% 100%,0 100%);
}
.stand__summary{margin-top:14px;font-size:15px;line-height:1.85;color:var(--rock);max-width:34ch}
.stand__stamp{display:flex;align-items:center;gap:8px;margin-top:18px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.12em;color:var(--cyan)}
.stand__cols{display:grid;grid-template-columns:1fr 1fr 1.6fr;gap:32px;min-width:0}
.stand__col{min-width:0}
.stand__coltitle{margin-bottom:14px;font-family:var(--font-mono);font-size:11.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--amber)}
.stand__list{display:grid;gap:9px}
.stand__link{display:inline-block;font-size:14.5px;color:#C9D2C9;border-bottom:1px solid transparent;transition:color .16s ease,border-color .16s ease}
.stand__link:hover{color:var(--amber);border-bottom-color:var(--amber)}
.stand__contactline{display:grid;grid-template-columns:3.4em minmax(0,1fr);gap:8px;font-size:13.5px;line-height:1.6;color:#C9D2C9;word-break:break-word}
.stand__k{padding-top:3px;font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;color:var(--rock)}
.stand__v{font-family:var(--font-mono);font-size:12.5px;letter-spacing:.02em}
.stand__note{margin-top:14px;font-size:12.5px;line-height:1.8;color:var(--rock);max-width:42ch}
.stand__bottom{display:flex;flex-wrap:wrap;align-items:center;gap:12px 28px;padding-top:22px}
.stand__legal{display:flex;flex-wrap:wrap;gap:8px 18px}
.stand__legal .stand__link{font-size:13px;color:var(--rock)}
.stand__icp{font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--rock)}
.stand__copy{margin-left:auto;font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;color:var(--rock)}

/* ===== 响应式 ===== */
@media (max-width:1100px){
  :root{--gutter:20px}
  .cmdbar__link{padding:0 10px}
  .cmdbar__label{font-size:13px}
}

@media (max-width:880px){
  :root{--gutter:18px;--bar-h:62px}
  .cmdbar__toggle{display:flex}
  .cmdbar__nav{
    position:absolute;top:100%;left:0;right:0;
    display:none;flex-direction:column;
    border-left:0;border-top:2px solid var(--moss);border-bottom:2px solid var(--amber);
    background:#0B221C;
    box-shadow:0 22px 44px rgba(0,0,0,.62);
    max-height:calc(100vh - var(--bar-h));
    overflow-y:auto;
    padding:6px 0 14px;
  }
  .cmdbar__nav[data-open="true"]{display:block}
  .cmdbar__navlist{flex-direction:column;width:auto}
  .cmdbar__navitem{width:100%}
  .cmdbar__link{
    flex-direction:row;align-items:baseline;justify-content:flex-start;gap:14px;
    height:auto;padding:14px var(--gutter);
    border-right:0;
    border-bottom:1px solid rgba(139,148,139,.14);
  }
  .cmdbar__label{font-size:15px}
  .cmdbar__index{font-size:11px;min-width:24px}
  .cmdbar__link[aria-current="page"]::after{left:0;right:auto;top:0;bottom:0;width:3px;height:auto}
  .brand__tag{font-size:9px}
  .grid--split,.grid--split-alt,.grid--halves,.grid--thirds{grid-template-columns:1fr}
  .stand__top{grid-template-columns:1fr;gap:32px}
  .stand__cols{grid-template-columns:1fr 1fr;gap:26px}
  .stand__col--contact{grid-column:1/-1}
  .stand__summary{max-width:none}
  .stand__copy{margin-left:0}
  .section{padding-block:44px}
}

@media (max-width:720px){
  .brand__tag{display:none}
  .cmdbar__cta{display:none}
  .cmdbar__aside{gap:0}
  .panel{padding:22px;box-shadow:4px 4px 0 rgba(0,0,0,.5)}
  .index__row{grid-template-columns:44px minmax(0,1fr);gap:14px}
  .index__row>*:last-child{grid-column:2}
}

@media (max-width:560px){
  :root{--gutter:16px;--bar-h:58px}
  .cmdbar__aside{display:none}
  .brand__name{font-size:16px}
  .stand__cols{grid-template-columns:1fr}
  .stand__col--contact{grid-column:auto}
  .stand__inner{padding-top:44px}
  .btn{padding:11px 16px;font-size:14px}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{
    animation-duration:.001ms!important;
    animation-iteration-count:1!important;
    transition-duration:.001ms!important;
  }
  .cmdbar__progress{transition:none}
  .status__dot{animation:none}
}