:root{
  --mint:#b4fde1;
  --sky:#add8e6;
  --ink:#172620;
  --ink-2:#3c5348;
  --mint-l:#e6fff6;
  --sky-l:#e9f5fb;
  --paper:#fbfffd;
  --edge:rgba(23,38,32,.18);
  --edge-2:rgba(23,38,32,.36);
  --r-lg:24px;
  --r-md:16px;
  --sh:4px 4px 10px rgba(23,38,32,.16), inset -2px -2px 8px rgba(23,38,32,.09), inset 2px 2px 8px rgba(255,255,255,.9);
  --press:150ms ease-out;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;min-height:100vh;display:flex;flex-direction:column;
  font-family:"Poppins","Open Sans",system-ui,-apple-system,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
  font-size:17px;line-height:1.78;color:var(--ink);
  background:linear-gradient(180deg,#f2fffa 0%,#eef8ff 52%,#f8fffc 100%) fixed;
}
body.locked{overflow:hidden}
img{max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
:focus-visible{outline:3px solid #4fd6a5;outline-offset:2px}
.shell{display:flex;flex-direction:column;min-height:100vh}
main{flex:1 0 auto}

.skip{position:absolute;left:14px;top:-72px;z-index:90;padding:10px 16px;border:3px solid var(--edge-2);border-radius:14px;background:#fff;box-shadow:var(--sh);font-weight:600}
.skip:focus{top:12px}

/* 顶部 */
.top{position:relative;z-index:40;background:linear-gradient(180deg,#e9fff7,#f8fffc)}
.bar{
  display:grid;grid-template-columns:auto minmax(0,1fr) auto minmax(0,1fr) auto;
  align-items:center;gap:10px;max-width:1120px;margin:0 auto;padding:12px 16px;
}
.split{display:flex;flex-wrap:wrap;gap:2px;min-width:0}
.split.left{justify-content:flex-end}
.split a{display:flex;align-items:center;min-height:42px;padding:4px 9px;border-radius:12px;border:2px solid transparent;font-size:15px;font-weight:500;color:var(--ink-2)}
.split a:hover{background:#fff;border-color:var(--edge);color:var(--ink)}
.brand{display:flex;align-items:center;gap:8px;padding:6px 14px;border:3px solid var(--edge-2);border-radius:999px;background:linear-gradient(180deg,#fff,var(--mint-l));box-shadow:var(--sh);font-weight:700;font-size:16px;max-width:38vw;transition:transform var(--press)}
.brand:active{transform:translateY(1px) scale(.99)}
.brand img{width:26px;height:26px;object-fit:contain;border-radius:9px}
.brand span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.burger{display:grid;place-content:center;gap:5px;width:46px;height:46px;border:3px solid var(--edge-2);border-radius:14px;background:linear-gradient(180deg,#fff,var(--sky-l));box-shadow:var(--sh);cursor:pointer;transition:transform var(--press)}
.burger:active{transform:translateY(2px) scale(.97)}
.burger i{display:block;width:18px;height:3px;border-radius:3px;background:var(--ink)}
.find{display:flex;justify-content:flex-end;min-width:0}
.find input{
  width:150px;min-width:0;min-height:44px;padding:8px 14px;font:inherit;font-size:15px;color:var(--ink);
  border:3px solid var(--edge-2);border-radius:999px;background:#fff;
  box-shadow:inset -2px -2px 6px rgba(23,38,32,.08),inset 2px 2px 6px rgba(255,255,255,.9);
}
.find input::placeholder{color:#7b9089}

/* 粘性锚点条 */
.jump{
  position:sticky;top:0;z-index:38;display:flex;gap:8px;overflow-x:auto;
  padding:8px 16px 10px;scrollbar-width:thin;
  background:rgba(246,255,252,.94);border-bottom:3px solid var(--edge);
  backdrop-filter:blur(8px);
}
.jump a{
  flex:0 0 auto;display:flex;align-items:center;min-height:42px;padding:7px 14px;
  border:3px solid var(--edge);border-radius:999px;background:#fff;
  font-size:15px;font-weight:600;color:var(--ink-2);white-space:nowrap;
  transition:transform var(--press),background var(--press);
}
.jump a:hover{background:var(--mint-l)}
.jump a:active{transform:translateY(2px) scale(.98)}
.jump a[aria-current="true"]{background:linear-gradient(180deg,#d8fff0,var(--mint));color:var(--ink);border-color:var(--edge-2)}

/* 全屏菜单 */
.drawer{
  position:fixed;inset:0;z-index:70;display:flex;flex-direction:column;gap:14px;
  padding:16px;overflow-y:auto;
  background:linear-gradient(160deg,#eafff6 0%,#e9f5fb 100%);
  visibility:hidden;opacity:0;transform:translateY(-24px) scale(.98);
  transition:opacity .26s ease,transform .3s cubic-bezier(.34,1.56,.64,1),visibility .3s;
}
.drawer.open{visibility:visible;opacity:1;transform:none}
.drawer-top{display:flex;gap:10px;align-items:center;justify-content:space-between}
.find.wide{justify-content:flex-start;flex:1}
.find.wide input{width:100%;max-width:none}
.drawer-x{min-height:46px;padding:6px 18px;border:3px solid var(--edge-2);border-radius:14px;background:linear-gradient(180deg,#fff,var(--mint-l));box-shadow:var(--sh);font:inherit;font-size:16px;font-weight:700;cursor:pointer}
.drawer-nav{display:flex;flex-direction:column;gap:10px}
.drawer-nav a{
  display:flex;align-items:center;min-height:56px;padding:12px 18px;
  border:3px solid var(--edge);border-radius:18px;background:#fff;
  font-size:18px;font-weight:600;box-shadow:var(--sh);
}
.drawer.open .drawer-nav a{animation:pop .38s cubic-bezier(.34,1.56,.64,1) both}
.drawer.open .drawer-nav a:nth-child(2){animation-delay:.04s}
.drawer.open .drawer-nav a:nth-child(3){animation-delay:.08s}
.drawer.open .drawer-nav a:nth-child(4){animation-delay:.12s}
.drawer.open .drawer-nav a:nth-child(5){animation-delay:.16s}
.drawer.open .drawer-nav a:nth-child(6){animation-delay:.2s}
.drawer.open .drawer-nav a:nth-child(7){animation-delay:.24s}
.drawer-nav a.hide{display:none}
@keyframes pop{from{opacity:0;transform:translateY(14px) scale(.97)}to{opacity:1;transform:none}}

/* 首屏 */
.hero{
  display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;
  gap:clamp(14px,4vw,38px);min-height:45vh;max-width:1120px;margin:0 auto;
  padding:26px 20px 30px;
}
.hero-art{
  margin:0;display:grid;place-items:center;width:clamp(78px,13vw,150px);aspect-ratio:1/1;
  border:4px solid var(--edge);border-radius:var(--r-lg);
  background:radial-gradient(circle at 30% 25%,#fff,var(--mint) 62%,var(--sky));
  box-shadow:var(--sh);overflow:hidden;
}
.hero-art .art{width:100%;height:100%;object-fit:contain;padding:10px}
.blob{width:52%;aspect-ratio:1/1;border-radius:50%;background:linear-gradient(140deg,#fff,var(--sky));box-shadow:inset -3px -3px 8px rgba(23,38,32,.14)}
.hero-txt{text-align:right;min-width:0}
.hero h1{margin:0 0 12px;font-size:clamp(1.6rem,5vw,2.55rem);line-height:1.16;letter-spacing:-.015em}
.lead{margin:0 0 0 auto;max-width:50ch;color:var(--ink-2);font-size:16px}

/* 正文区 */
.body{
  display:grid;grid-template-columns:252px minmax(0,1fr);gap:26px;
  align-items:start;max-width:1120px;margin:0 auto;padding:0 20px 54px;
}
main article{scroll-margin-top:96px}

.rail{
  position:sticky;top:82px;padding:16px;border:3px solid var(--edge);border-radius:20px;
  background:linear-gradient(180deg,#f0fff9,var(--mint-l));box-shadow:var(--sh);
}
.eyebrow{display:inline-block;font-size:14px;font-weight:600;letter-spacing:.14em;color:#53786b}
.rail-h{margin:2px 0 12px;font-size:20px;line-height:1.3}
.rail-nav{display:flex;flex-direction:column;gap:4px}
.rail-nav a{
  display:flex;align-items:center;min-height:40px;padding:6px 10px;border-radius:11px;
  border:2px solid transparent;font-size:15px;color:var(--ink-2);
}
.rail-nav a:hover{background:#fff;border-color:var(--edge);color:var(--ink)}

.content{min-width:0}
.content article{
  padding:22px 22px 8px;margin:0 0 22px;
  border:3px solid var(--edge);border-radius:10px;background:#fff;
}
.content h2,.content h3{line-height:1.34;margin:1.25em 0 .55em;letter-spacing:-.01em}
.content h2{font-size:clamp(1.2rem,2.6vw,1.5rem)}
.content h3{font-size:1.08rem}
.content article > :first-child{margin-top:0}
.content p{margin:0 0 1em}
.content ul,.content ol{margin:0 0 1em;padding-left:1.35em}
.content li{margin:0 0 .35em}
.content a{color:#0f6b52;text-decoration:underline;text-decoration-thickness:2px;text-underline-offset:3px}
.content img{border-radius:10px;border:3px solid var(--edge)}
.content blockquote{
  margin:0 0 1em;padding:12px 16px;border-left:6px solid var(--mint);border-radius:0 12px 12px 0;
  background:var(--mint-l);color:var(--ink-2);
}
.content table{width:100%;border-collapse:collapse;margin:0 0 1em;font-size:16px}
.content th,.content td{border:2px solid var(--edge);padding:8px 10px;text-align:left}
.content code{font-family:ui-monospace,Menlo,Consolas,monospace;font-size:15px;background:var(--sky-l);padding:1px 5px;border-radius:6px}

/* 页脚 */
.foot{margin-top:auto;background:linear-gradient(180deg,#ecfff8,#e4f2fa);border-top:4px solid var(--edge)}
.foot-grid{display:grid;grid-template-columns:1.05fr 1.4fr 1fr;gap:26px;max-width:1120px;margin:0 auto;padding:34px 20px 20px}
.f-brand{display:flex;flex-direction:column;gap:10px}
.f-mark{width:40px;height:40px;border-radius:12px;border:3px solid var(--edge);object-fit:contain;background:#fff}
.foot address{font-style:normal;font-weight:700;font-size:17px;line-height:1.5;color:var(--ink);word-break:break-word}
.f-nav dl{margin:0}
.f-nav dt{font-weight:700;font-size:16px;margin-bottom:6px}
.f-nav dd{margin:0}
.f-nav dd a{display:flex;align-items:center;min-height:40px;font-size:16px;color:var(--ink-2)}
.f-nav dd a:hover,.f-list a:hover,.f-top a:hover{color:#0f6b52;text-decoration:underline;text-underline-offset:3px}
.f-list{list-style:none;margin:0;padding:0}
.f-list a{display:flex;align-items:center;min-height:40px;font-size:16px;color:var(--ink-2)}
.f-base{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  max-width:1120px;margin:0 auto;padding:12px 20px 26px;border-top:3px dashed var(--edge);
}
.copy{margin:0;font-size:15px;color:var(--ink-2)}
.f-top{list-style:none;display:flex;gap:16px;margin:0;padding:0}
.f-top a{display:flex;align-items:center;min-height:40px;font-size:15px;color:var(--ink-2)}

/* 进场 */
.js main article{opacity:.001;transform:translateY(14px);transition:opacity .5s ease,transform .5s cubic-bezier(.2,.8,.3,1)}
.js main article.in{opacity:1;transform:none}

@media (max-width:980px){
  .split{display:none}
  .bar{grid-template-columns:auto minmax(0,1fr) auto}
  .brand{max-width:56vw;margin:0 auto}
}
@media (max-width:780px){
  .body{grid-template-columns:minmax(0,1fr);gap:18px;padding-bottom:40px}
  .rail{position:static}
  .rail-nav{flex-direction:row;flex-wrap:wrap}
  .rail-nav a{border:2px solid var(--edge);background:#fff}
  .foot-grid{grid-template-columns:1fr;gap:18px}
  .content article{padding:18px 16px 6px}
}
@media (max-width:520px){
  .bar{gap:8px;padding:10px 12px}
  .find input{width:98px;padding:8px 10px}
  .hero{padding:20px 16px 24px;min-height:40vh}
  .hero h1{font-size:clamp(1.45rem,7vw,2rem)}
  .jump{padding:8px 12px 10px}
  .f-base{flex-direction:column;align-items:flex-start}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
  .js main article{opacity:1;transform:none}
}

button[aria-expanded]{min-width:44px;min-height:44px}