:root{
  --ink:#0B0F0E;
  --ink-soft:#111714;
  --paper:#F6F2E9;
  --paper-2:#E7E0D3;
  --graphite:#1B2320;
  --mint:#00E5A0;
  --mint-deep:#007A57;
  --mint-fog:#B8FFE8;
  --amber:#FF8A3D;
  --amber-deep:#A8430A;
  --violet:#7C5CFF;
  --violet-fog:#C4B5FD;
  --line:#2E3A35;
  --line-soft:#DCD4C4;
  --muted:#9BA8A2;
  --danger:#E5484D;
  --ink-text:#101614;
  --radius-capsule:999px;
  --radius-card:14px;
  --gutter:clamp(16px,4vw,40px);
  --max:1240px;
  --font-cn:"HarmonyOS Sans SC","Source Han Sans SC","Noto Sans SC","PingFang SC","Microsoft YaHei",system-ui,sans-serif;
  --font-mono:"JetBrains Mono","SFMono-Regular",ui-monospace,"Cascadia Mono",Menlo,Consolas,monospace;
}

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

body{
  background:var(--paper);
  color:var(--ink-text);
  font-family:var(--font-cn);
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

h1,h2,h3,h4,h5{font-weight:700;line-height:1.12;letter-spacing:-.01em;}

:focus-visible{outline:2px solid var(--mint-deep);outline-offset:3px;border-radius:4px;}
.site-header :focus-visible,
.site-footer :focus-visible{outline-color:var(--mint);}

#main-content{scroll-margin-top:118px;}

/* ---------- 布局基础 ---------- */
.container{width:min(var(--max),calc(100% - 2 * var(--gutter)));margin-inline:auto;}
.section{padding-block:clamp(44px,7vw,104px);}

.mono{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:.1em;
  font-variant-numeric:tabular-nums;
}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.16em;
  text-transform:uppercase;color:var(--mint-deep);
}
.eyebrow::before{content:"";width:22px;height:1px;background:currentColor;}

.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--4{grid-template-columns:repeat(4,minmax(0,1fr));}
.grid--auto{grid-template-columns:repeat(auto-fit,minmax(240px,1fr));}

.index-rule{
  display:flex;align-items:center;gap:14px;
  margin-block:clamp(26px,4vw,46px);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;color:#8A938E;
}
.index-rule::before,
.index-rule::after{content:"";height:1px;flex:1;background:var(--line-soft);}

/* ---------- 标签 ---------- */
.chip{
  display:inline-flex;align-items:center;gap:7px;
  padding:4px 11px;border-radius:var(--radius-capsule);
  font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;
  border:1px solid var(--line-soft);background:rgba(255,255,255,.55);color:#3A423E;
}
.chip--mint{background:var(--mint-fog);border-color:rgba(0,229,160,.45);color:#00543D;}
.chip--amber{background:rgba(255,138,61,.16);border-color:rgba(255,138,61,.5);color:var(--amber-deep);}
.chip--violet{background:rgba(124,92,255,.13);border-color:rgba(124,92,255,.42);color:#4B33C9;}

/* ---------- 按钮 ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 24px;border-radius:var(--radius-capsule);
  border:1px solid transparent;
  font-size:14.5px;font-weight:600;letter-spacing:.02em;
  text-decoration:none;cursor:pointer;
  transition:transform .18s ease,background-color .18s ease,color .18s ease,
             border-color .18s ease,box-shadow .18s ease;
}
.btn--primary{background:var(--mint);color:#04140F;box-shadow:0 14px 34px -20px rgba(0,229,160,.95);}
.btn--primary:hover{background:#22F5B5;transform:translateY(-1px);}
.btn--ghost{background:transparent;color:var(--ink-text);border-color:var(--line-soft);}
.btn--ghost:hover{border-color:var(--mint-deep);color:var(--mint-deep);}
.btn--ghost-light{background:transparent;color:var(--paper);border-color:var(--line);}
.btn--ghost-light:hover{border-color:var(--mint);color:var(--mint);}
.btn--dark{background:var(--graphite);color:var(--paper);border-color:var(--line);}
.btn--dark:hover{border-color:var(--mint);color:var(--mint);}
.btn--sm{padding:9px 16px;font-size:12.5px;}

/* ---------- 面包屑 ---------- */
.breadcrumbs{padding-block:14px;border-bottom:1px solid var(--line-soft);}
.breadcrumbs__list{
  display:flex;flex-wrap:wrap;align-items:center;gap:8px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.08em;color:#6B7671;
}
.breadcrumbs__item{display:inline-flex;align-items:center;gap:8px;}
.breadcrumbs__item + .breadcrumbs__item::before{content:"/";color:#B6BDB8;}
.breadcrumbs__link{text-decoration:none;border-bottom:1px solid transparent;transition:color .16s ease,border-color .16s ease;}
.breadcrumbs__link:hover{color:var(--mint-deep);border-bottom-color:var(--mint-deep);}
.breadcrumbs__current{color:var(--ink-text);font-weight:600;}

/* ---------- 正文 ---------- */
.prose{max-width:68ch;font-size:16.5px;line-height:1.78;color:#26302C;}
.prose p + p{margin-top:1em;}
.prose h2{margin-top:1.6em;font-size:clamp(22px,2.4vw,30px);}
.prose h3{margin-top:1.4em;font-size:19px;}
.prose ul{margin-top:.85em;padding-left:1.2em;list-style:disc;}
.prose li + li{margin-top:.35em;}
.prose a{color:var(--mint-deep);text-decoration:underline;text-underline-offset:3px;}

/* ---------- 面板 ---------- */
.panel{
  position:relative;
  padding:clamp(18px,2.2vw,26px);
  border-radius:var(--radius-card);
  background:#FFFDF7;
  border:1px solid var(--line-soft);
  box-shadow:0 1px 0 rgba(11,15,14,.03),0 24px 48px -40px rgba(11,15,14,.6);
}
.panel--dark{background:var(--graphite);border-color:var(--line);color:var(--paper);}
.panel--violet{
  background:linear-gradient(150deg,rgba(124,92,255,.13),rgba(196,181,253,.24));
  border-color:rgba(124,92,255,.42);
}
.panel__head{
  display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding-bottom:12px;margin-bottom:14px;border-bottom:1px solid var(--line-soft);
}
.panel--dark .panel__head{border-bottom-color:var(--line);}
.panel__title{font-size:15px;font-weight:700;letter-spacing:.01em;}
.panel__meta{font-family:var(--font-mono);font-size:11px;letter-spacing:.08em;color:#77817C;}
.panel--dark .panel__meta{color:var(--muted);}

/* ---------- 图片容器（页面阶段放置占位图） ---------- */
.media-frame{
  position:relative;overflow:hidden;
  border-radius:var(--radius-card);
  border:1px solid var(--line-soft);
  background:linear-gradient(140deg,#EDE7DA,#F6F2E9 55%,#E2F6EE);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.55);
}
.media-frame::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:
    linear-gradient(rgba(11,15,14,.05) 1px,transparent 1px),
    linear-gradient(90deg,rgba(11,15,14,.05) 1px,transparent 1px);
  background-size:28px 28px;
}
.media-frame > img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;}
.media-frame--wide{aspect-ratio:16/9;}
.media-frame--4x3{aspect-ratio:4/3;}
.media-frame--square{aspect-ratio:1/1;}
.media-frame--tall{aspect-ratio:3/4;}
.media-frame--dark{background:linear-gradient(140deg,#0B0F0E,#1B2320);border-color:var(--line);}
.media-frame--dark::after{
  background-image:
    linear-gradient(rgba(0,229,160,.09) 1px,transparent 1px),
    linear-gradient(90deg,rgba(0,229,160,.09) 1px,transparent 1px);
}

/* ============================================================
   头部：状态轨道 + 悬浮胶囊导航 + 滚动进度尺
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:90;
  color:var(--paper);
  background:linear-gradient(180deg,rgba(11,15,14,.97),rgba(11,15,14,.88));
  -webkit-backdrop-filter:blur(16px) saturate(120%);
  backdrop-filter:blur(16px) saturate(120%);
  border-bottom:1px solid var(--line);
}

.skip-link{
  position:fixed;left:16px;top:16px;z-index:200;
  display:inline-block;padding:10px 18px;border-radius:var(--radius-capsule);
  background:var(--mint);color:#04140F;font-size:13px;font-weight:700;text-decoration:none;
  transform:translateY(-180%);
  transition:transform .18s ease;
}
.skip-link:focus{transform:translateY(0);outline:2px solid var(--paper);outline-offset:2px;}

/* 状态轨道 */
.hdr-rail{background:rgba(0,0,0,.32);border-bottom:1px solid var(--line);}
.hdr-rail__inner{
  width:min(var(--max),calc(100% - 2 * var(--gutter)));
  margin-inline:auto;
  padding:7px 0;
  display:flex;align-items:center;gap:clamp(10px,2vw,26px);
  font-family:var(--font-mono);
  font-size:11.5px;letter-spacing:.07em;
  color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.hdr-rail__pulse{display:inline-flex;align-items:center;gap:8px;color:#C9D3CE;white-space:nowrap;}
.pulse-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--mint);
  box-shadow:0 0 0 3px rgba(0,229,160,.16),0 0 10px rgba(0,229,160,.9);
  animation:breathe 2.8s ease-in-out infinite;
}
.hdr-rail__count{margin-left:auto;white-space:nowrap;}
.hdr-rail__clock{color:var(--mint);letter-spacing:.12em;}
.hdr-rail__meta{white-space:nowrap;color:#6E7B76;}
@keyframes breathe{
  0%,100%{opacity:1;transform:scale(1);}
  50%{opacity:.45;transform:scale(.82);}
}

/* 胶囊导航 */
.hdr-capsule{
  width:min(var(--max),calc(100% - 2 * var(--gutter)));
  margin:10px auto;
  padding:8px 10px 8px 18px;
  display:flex;align-items:center;gap:14px;
  background:rgba(27,35,32,.94);
  border:1px solid var(--line);
  border-radius:var(--radius-capsule);
  box-shadow:0 20px 44px -32px rgba(0,0,0,.95),inset 0 1px 0 rgba(246,242,233,.06);
}
.hdr-brand{
  display:inline-flex;align-items:center;gap:10px;
  text-decoration:none;color:var(--paper);flex:0 0 auto;
}
.hdr-brand__mark{
  display:grid;place-items:center;width:34px;height:34px;border-radius:10px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.04em;color:#04140F;
  background:linear-gradient(140deg,var(--mint),#5CF7C4 62%,var(--mint-fog));
  box-shadow:0 0 0 1px rgba(0,229,160,.36),0 0 22px -6px rgba(0,229,160,.75);
}
.hdr-brand__text{display:flex;flex-direction:column;line-height:1.15;}
.hdr-brand__name{font-size:15px;font-weight:700;letter-spacing:.02em;}
.hdr-brand__sub{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.16em;color:var(--muted);
}

.nav-toggle{
  display:none;align-items:center;gap:9px;margin-left:auto;
  padding:9px 15px;border-radius:var(--radius-capsule);cursor:pointer;
  background:rgba(0,229,160,.1);
  border:1px solid rgba(0,229,160,.34);
  color:var(--paper);
  font-family:var(--font-mono);font-size:12px;letter-spacing:.1em;
  transition:background-color .18s ease,border-color .18s ease;
}
.nav-toggle:hover{background:rgba(0,229,160,.18);border-color:var(--mint);}
.nav-toggle__bars{display:inline-flex;flex-direction:column;gap:4px;width:16px;}
.nav-toggle__bars span{
  display:block;height:1.5px;background:currentColor;border-radius:2px;
  transition:transform .2s ease,opacity .2s ease;
}
.nav-toggle[aria-expanded="true"]{background:var(--mint);color:#04140F;border-color:var(--mint);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:first-child{transform:translateY(2.75px) rotate(45deg);}
.nav-toggle[aria-expanded="true"] .nav-toggle__bars span:last-child{transform:translateY(-2.75px) rotate(-45deg);}

.hdr-nav{margin-left:auto;}
.hdr-nav__list{display:flex;align-items:center;gap:2px;}
.hdr-nav__link{
  display:inline-flex;align-items:center;gap:7px;
  padding:9px 14px;border-radius:var(--radius-capsule);
  border:1px solid transparent;
  font-size:13.5px;color:rgba(246,242,233,.78);
  text-decoration:none;white-space:nowrap;
  transition:color .18s ease,background-color .18s ease,border-color .18s ease;
}
.hdr-nav__idx{
  font-family:var(--font-mono);font-size:10px;letter-spacing:.06em;color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.hdr-nav__link:hover{color:var(--paper);background:rgba(0,229,160,.1);border-color:rgba(0,229,160,.3);}
.hdr-nav__link[aria-current="page"]{
  color:#04140F;background:var(--mint);border-color:var(--mint);font-weight:600;
}
.hdr-nav__link[aria-current="page"] .hdr-nav__idx{color:rgba(4,20,15,.62);}
.hdr-nav__link[aria-current="page"]::before{
  content:"";width:5px;height:5px;border-radius:50%;background:#04140F;flex:0 0 auto;
}

/* 滚动进度尺 */
.scroll-meter{height:2px;background:rgba(46,58,53,.7);overflow:hidden;}
.scroll-meter__fill{
  display:block;height:100%;width:100%;
  background:linear-gradient(90deg,var(--mint),var(--mint-fog));
  transform:scaleX(0);transform-origin:0 50%;
}

/* ============================================================
   页脚
   ============================================================ */
.site-footer{
  position:relative;
  background:var(--ink);
  color:var(--paper);
  border-top:1px solid var(--line);
}
.site-footer::before{
  content:"";position:absolute;top:0;left:0;right:0;height:1px;
  background:linear-gradient(90deg,transparent,var(--mint),transparent);
  opacity:.55;
}
.ft-inner{
  width:min(var(--max),calc(100% - 2 * var(--gutter)));
  margin-inline:auto;
  padding:clamp(40px,6vw,72px) 0 0;
}
.ft-grid{
  display:grid;
  grid-template-columns:1.4fr .7fr .7fr 1.15fr;
  gap:clamp(24px,4vw,52px);
}
.ft-brand{display:flex;flex-direction:column;gap:12px;align-items:flex-start;}
.ft-brand__mark{
  display:grid;place-items:center;width:42px;height:42px;border-radius:12px;
  font-family:var(--font-mono);font-size:13px;letter-spacing:.04em;color:#04140F;
  background:linear-gradient(140deg,var(--mint),#5CF7C4 62%,var(--mint-fog));
  box-shadow:0 0 0 1px rgba(0,229,160,.34),0 0 28px -10px rgba(0,229,160,.8);
}
.ft-brand__name{font-size:17px;font-weight:700;letter-spacing:.02em;}
.ft-brand__tag{
  font-size:13.5px;line-height:1.7;color:#A9B5B0;max-width:34ch;
}
.ft-col{display:flex;flex-direction:column;gap:14px;}
.ft-col__title{
  font-family:var(--font-mono);font-size:10.5px;font-weight:500;
  letter-spacing:.2em;text-transform:uppercase;color:var(--mint);
  padding-bottom:10px;border-bottom:1px solid var(--line);
}
.ft-list{display:grid;gap:9px;}
.ft-link{
  display:inline-block;width:fit-content;
  font-size:14px;color:rgba(246,242,233,.74);text-decoration:none;
  border-bottom:1px solid transparent;
  transition:color .16s ease,border-color .16s ease;
}
.ft-link:hover{color:var(--mint);border-bottom-color:var(--mint);}
.ft-contact .ft-list{gap:11px;}
.ft-contact__row{
  display:grid;grid-template-columns:44px minmax(0,1fr);
  gap:10px;align-items:baseline;
}
.ft-contact__label{
  font-family:var(--font-mono);font-size:10.5px;letter-spacing:.1em;
  color:#77847F;
}
.ft-contact__value{
  font-size:13.5px;line-height:1.6;color:rgba(246,242,233,.88);word-break:break-word;
}
.ft-contact__note{
  margin-top:2px;padding-top:12px;border-top:1px dashed var(--line);
  font-size:12px;line-height:1.65;color:var(--muted);
}
.ft-bottom{
  margin-top:clamp(32px,5vw,56px);
  padding-block:20px 28px;
  border-top:1px solid var(--line);
  display:flex;align-items:center;flex-wrap:wrap;gap:14px;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.06em;color:var(--muted);
  font-variant-numeric:tabular-nums;
}
.ft-meta{margin:0;}
.ft-icp{color:#7C8984;}
.to-top{
  display:inline-flex;align-items:center;gap:8px;margin-left:auto;
  padding:9px 16px;border-radius:var(--radius-capsule);cursor:pointer;
  font-family:var(--font-mono);font-size:11.5px;letter-spacing:.1em;
  color:var(--paper);border:1px solid var(--line);background:transparent;
  transition:color .18s ease,border-color .18s ease,background-color .18s ease;
}
.to-top:hover{color:var(--mint);border-color:var(--mint);background:rgba(0,229,160,.08);}

/* ============================================================
   响应式
   ============================================================ */
@media (max-width:1080px){
  .hdr-rail__meta{display:none;}
  .hdr-nav__link{padding:8px 11px;font-size:12.5px;}
  .hdr-nav__idx{display:none;}
  .ft-grid{grid-template-columns:1.2fr .8fr .8fr 1.2fr;}
}

@media (max-width:899px){
  #main-content{scroll-margin-top:132px;}
  .hdr-capsule{flex-wrap:wrap;border-radius:24px;padding:9px 12px;gap:10px;}
  .nav-toggle{display:inline-flex;}
  .hdr-nav{display:none;flex-basis:100%;width:100%;margin-left:0;}
  .site-header[data-open] .hdr-nav{display:block;}
  .hdr-nav__list{
    flex-direction:column;align-items:stretch;gap:2px;
    margin-top:10px;padding-top:10px;border-top:1px solid var(--line);
  }
  .hdr-nav__link{justify-content:space-between;padding:12px 14px;border-radius:12px;font-size:14.5px;}
  .hdr-nav__idx{display:inline;}
  .hdr-rail__inner{font-size:10.5px;gap:10px;}
  .grid--3,.grid--4{grid-template-columns:repeat(2,minmax(0,1fr));}
  .ft-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:32px;}
}

@media (max-width:600px){
  .hdr-brand__sub{display:none;}
  .hdr-brand__name{font-size:14px;}
  .hdr-rail__pulse{font-size:10px;}
  .grid--2,.grid--3,.grid--4{grid-template-columns:minmax(0,1fr);}
  .ft-grid{grid-template-columns:minmax(0,1fr);}
  .ft-bottom{flex-direction:column;align-items:flex-start;gap:12px;}
  .to-top{margin-left:0;}
}

@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;
  }
  .pulse-dot{animation:none;opacity:1;}
  .scroll-meter__fill{transition:none;}
}