@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root{
  --mint:#69ff69;
  --cyan:#00ffff;
  --bubble:#ff9ad5;
  --ink:#172617;
  --soft:#3d5544;
  --paper:#f1fff8;
  --card:rgba(255,255,255,.76);
  --line:rgba(23,38,23,.16);
  --chrome:linear-gradient(180deg,#ffffff 0%,#e6f2ec 42%,#fafffc 56%,#cfdfd7 100%);
  --chrome-btn:linear-gradient(180deg,#ffffff 0%,#d8ffe4 40%,#8dffa9 68%,#4ce07a 100%);
  --lift:0 10px 26px rgba(23,38,23,.10), inset 0 1px 0 #fff;
  --r:10px;
  --bar-h:66px;
}

*,*::before,*::after{box-sizing:border-box}

html{scroll-behavior:smooth}

body{
  margin:0;
  overflow-x:clip;
  font-family:'Inter',system-ui,-apple-system,'Segoe UI','PingFang SC','Microsoft YaHei',sans-serif;
  font-size:17px;
  line-height:1.68;
  color:var(--ink);
  background:
    radial-gradient(1100px 560px at 48% -220px, rgba(0,255,255,.30), transparent 72%),
    radial-gradient(800px 460px at 92% 16%, rgba(105,255,105,.32), transparent 70%),
    var(--paper);
  -webkit-font-smoothing:antialiased;
}

::selection{background:rgba(0,255,255,.55);color:var(--ink)}

.page{position:relative;display:flex;flex-direction:column;min-height:100vh}
.page::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:0;
  pointer-events:none;
  background:
    radial-gradient(circle at 10% 24%, rgba(105,255,105,.38) 0 10px, transparent 11px),
    radial-gradient(circle at 88% 10%, rgba(0,255,255,.38) 0 16px, transparent 17px),
    radial-gradient(circle at 74% 58%, rgba(255,154,213,.30) 0 22px, transparent 23px),
    radial-gradient(circle at 26% 86%, rgba(0,255,255,.28) 0 12px, transparent 13px);
}
header,main,footer{position:relative;z-index:1}

main{flex:1}
main#top{scroll-margin-top:calc(var(--bar-h) + 8px)}

.wrap{width:min(1180px,100% - 32px);margin-inline:auto}

a{color:inherit}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- 顶栏 ---------- */
.bar{
  position:sticky;
  top:0;
  z-index:40;
  display:grid;
  grid-template-columns:1fr auto 1fr;
  align-items:center;
  gap:8px;
  min-height:var(--bar-h);
  padding:6px clamp(10px,2.6vw,26px);
  background:var(--chrome);
  border-bottom:1px solid rgba(23,38,23,.22);
  box-shadow:0 6px 20px rgba(23,38,23,.14), inset 0 -1px 0 rgba(0,255,255,.5);
  backdrop-filter:blur(10px) saturate(1.3);
}
.bar-left{display:flex;align-items:center;gap:8px;justify-self:start}
.bar-right{display:flex;align-items:center;gap:8px;justify-self:end}

.split{display:none;list-style:none;margin:0;padding:0}
.split a{
  display:flex;
  align-items:center;
  gap:6px;
  min-height:40px;
  padding:0 9px;
  border-radius:999px;
  font-size:16px;
  font-weight:500;
  text-decoration:none;
  white-space:nowrap;
}
.split a:hover,.split a:focus-visible{
  background:rgba(0,255,255,.28);
  box-shadow:inset 0 0 0 1px rgba(23,38,23,.2), 0 0 14px rgba(0,255,255,.7);
}

.dot{
  width:6px;height:6px;flex:none;border-radius:50%;
  background:radial-gradient(circle at 30% 30%,#fff,var(--mint) 45%,var(--cyan));
  box-shadow:0 0 8px rgba(0,255,255,.9);
}

.brand{
  justify-self:center;
  display:inline-flex;
  align-items:center;
  gap:8px;
  min-height:44px;
  padding:0 4px;
  text-decoration:none;
  font-weight:700;
  font-size:17px;
  letter-spacing:.01em;
  white-space:nowrap;
}
.brand-orb{
  width:20px;height:20px;flex:none;border-radius:50%;
  background:radial-gradient(circle at 32% 24%,#fff 0%,#c9ffd8 30%,var(--mint) 55%,var(--cyan) 100%);
  box-shadow:0 0 12px rgba(0,255,255,.85), inset -2px -2px 4px rgba(23,38,23,.25);
}
.brand-name{text-shadow:0 0 14px rgba(0,255,255,.55)}

.cta{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  padding:0 14px;
  border-radius:999px;
  border:1px solid rgba(23,38,23,.3);
  background:var(--chrome-btn);
  font-size:16px;
  font-weight:600;
  text-decoration:none;
  white-space:nowrap;
  box-shadow:0 3px 0 rgba(23,38,23,.22), inset 0 1px 0 #fff;
}
.cta:active{transform:translateY(2px);box-shadow:0 1px 0 rgba(23,38,23,.22), inset 0 1px 0 #fff}

/* 抽屉菜单 */
.drawer{position:relative}
.drawer summary{
  display:flex;
  align-items:center;
  gap:7px;
  min-height:40px;
  padding:0 12px;
  border-radius:999px;
  border:1px solid rgba(23,38,23,.3);
  background:rgba(255,255,255,.72);
  font-size:16px;
  font-weight:600;
  cursor:pointer;
  list-style:none;
  box-shadow:inset 0 1px 0 #fff, 0 2px 8px rgba(23,38,23,.10);
}
.drawer summary::-webkit-details-marker{display:none}
.drawer[open] summary{background:rgba(0,255,255,.32);box-shadow:inset 0 0 0 1px rgba(23,38,23,.3)}
.menu-ico{display:grid;gap:3px;width:16px}
.menu-ico i{display:block;height:2px;border-radius:2px;background:var(--ink)}
.drawer-list{
  position:absolute;
  top:calc(100% + 10px);
  left:0;
  width:min(80vw,290px);
  margin:0;
  padding:10px;
  list-style:none;
  display:grid;
  gap:3px;
  background:rgba(255,255,255,.94);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:0 16px 34px rgba(23,38,23,.22), inset 0 1px 0 #fff;
  backdrop-filter:blur(12px);
}
.drawer-list a{
  display:flex;
  align-items:center;
  gap:9px;
  min-height:42px;
  padding:0 11px;
  border-radius:8px;
  font-size:16px;
  text-decoration:none;
}
.drawer-list a:hover{background:rgba(105,255,105,.34)}

/* ---------- 首屏 ---------- */
.hero{
  min-height:70vh;
  display:grid;
  place-items:center;
  padding:clamp(26px,5vw,54px) 16px clamp(30px,6vw,58px);
  background:
    radial-gradient(circle at 18% 14%, rgba(105,255,105,.42), transparent 58%),
    radial-gradient(circle at 86% 78%, rgba(0,255,255,.42), transparent 58%);
  border-bottom:1px solid rgba(23,38,23,.12);
}
.hero-inner{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:center;
  gap:clamp(12px,3vw,26px);
  width:min(880px,100%);
}
.hero-ico{
  width:clamp(46px,9vw,72px);
  height:auto;
  flex:none;
  filter:drop-shadow(0 0 16px rgba(0,255,255,.85));
  will-change:transform;
}
.hero-copy{flex:1 1 260px;max-width:640px;text-align:center}
.hero h1{
  margin:0 0 12px;
  font-size:clamp(27px,5.6vw,54px);
  line-height:1.1;
  letter-spacing:-.022em;
  font-weight:700;
  background:linear-gradient(180deg,#172617 30%,#1f4b32 60%,#0c8f6d 100%);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  filter:drop-shadow(0 1px 0 #fff) drop-shadow(0 0 20px rgba(0,255,255,.5));
}
.lead{
  margin:0 auto;
  max-width:44ch;
  font-size:16px;
  line-height:1.7;
  color:var(--soft);
}

/* ---------- 版面：aside 左 + 正文 ---------- */
.body-grid{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:24px;
  padding:26px 0 44px;
}

.side{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:16px 14px;
  box-shadow:var(--lift);
}
.side-kicker{
  display:inline-block;
  font-size:14px;
  letter-spacing:.2em;
  font-weight:600;
  color:#0a6f4e;
  padding:1px 8px;
  border-radius:999px;
  background:rgba(0,255,255,.24);
  border:1px solid rgba(23,38,23,.16);
}
.side-title{
  margin:8px 0 10px;
  font-size:19px;
  line-height:1.3;
  letter-spacing:-.01em;
}
.side-list{list-style:none;margin:0;padding:0;display:grid;gap:1px}
.side-list a{
  display:flex;
  align-items:center;
  gap:8px;
  min-height:40px;
  padding:0 8px;
  border-radius:7px;
  font-size:16px;
  text-decoration:none;
  color:var(--ink);
  border-bottom:1px dashed rgba(23,38,23,.12);
}
.side-list li:last-child a{border-bottom:0}
.side-list a:hover{background:rgba(105,255,105,.32)}

/* ---------- 正文 ---------- */
.content{min-width:0}
.content article{
  background:var(--card);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:clamp(18px,3vw,30px);
  margin:0 0 20px;
  box-shadow:var(--lift);
  scroll-margin-top:calc(var(--bar-h) + 20px);
}
.content article:nth-of-type(even){
  background:linear-gradient(180deg,rgba(255,255,255,.9),rgba(226,255,240,.82));
}
.content h2{
  margin:0 0 14px;
  padding-bottom:11px;
  font-size:clamp(20px,2.7vw,28px);
  line-height:1.28;
  letter-spacing:-.015em;
  background:linear-gradient(90deg,var(--mint),var(--cyan)) left bottom / 92px 4px no-repeat;
  border-radius:2px;
}
.content h3{margin:20px 0 8px;font-size:19px;line-height:1.35}
.content p{margin:0 0 13px}
.content ul,.content ol{margin:0 0 14px;padding-left:1.25em}
.content li{margin:0 0 6px}
.content a{color:#0a6b4c;text-decoration:underline;text-underline-offset:2px}
.content a:hover{background:rgba(0,255,255,.28)}
.content strong{font-weight:700}
.content blockquote{
  margin:16px 0;
  padding:10px 14px;
  border-left:4px solid var(--cyan);
  border-radius:0 8px 8px 0;
  background:rgba(0,255,255,.14);
}
.content table{width:100%;border-collapse:collapse;font-size:16px;margin:0 0 14px}
.content th,.content td{border:1px solid rgba(23,38,23,.2);padding:8px 10px;text-align:left}
.content th{background:rgba(105,255,105,.28)}
.content img{max-width:100%;height:auto;border-radius:8px}

/* ---------- 页脚 ---------- */
.foot{
  margin-top:16px;
  background:linear-gradient(180deg,#eafff3,#d9f4e6);
  border-top:1px solid rgba(23,38,23,.2);
  box-shadow:inset 0 1px 0 #fff;
}
.foot-grid{
  display:grid;
  grid-template-columns:repeat(2,minmax(0,1fr));
  gap:22px;
  padding:32px 0 22px;
}
.foot-col-brand address{
  font-style:normal;
  font-weight:700;
  font-size:18px;
  line-height:1.35;
  text-shadow:0 0 14px rgba(0,255,255,.6);
}
.foot-h{
  margin:0 0 9px;
  font-size:16px;
  font-weight:600;
  letter-spacing:.02em;
  color:#0a6b4c;
}
.foot-list{list-style:none;margin:0;padding:0}
.foot-list a,.foot-links a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:16px;
  text-decoration:none;
}
.foot-list a:hover,.foot-links a:hover{text-decoration:underline;text-underline-offset:3px}

.sub{display:flex;flex-wrap:wrap;gap:8px}
.sub input{
  flex:1 1 130px;
  min-height:42px;
  padding:0 12px;
  font:inherit;
  font-size:16px;
  border-radius:8px;
  border:1px solid rgba(23,38,23,.3);
  background:#fff;
  box-shadow:inset 0 1px 3px rgba(23,38,23,.12);
}
.sub input:focus-visible{outline:2px solid var(--cyan);outline-offset:1px}
.sub button{
  min-height:42px;
  padding:0 18px;
  font:inherit;
  font-size:16px;
  font-weight:600;
  border-radius:8px;
  border:1px solid rgba(23,38,23,.3);
  background:var(--chrome-btn);
  cursor:pointer;
  box-shadow:0 3px 0 rgba(23,38,23,.24), inset 0 1px 0 #fff;
}
.sub button:active{transform:translateY(2px);box-shadow:0 1px 0 rgba(23,38,23,.24), inset 0 1px 0 #fff}

.foot-bottom{
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:6px 18px;
  padding:12px 0 20px;
  border-top:1px dashed rgba(23,38,23,.28);
}
.copy{margin:0;font-size:16px;color:var(--soft)}
.foot-links{display:flex;gap:16px;list-style:none;margin:0;padding:0}

/* ---------- 滚动揭示 ---------- */
.content article.will-in{opacity:.001;transform:translateY(18px)}
.content article.in{
  opacity:1;
  transform:none;
  transition:opacity .55s ease, transform .55s cubic-bezier(.2,.8,.3,1);
}

/* ---------- 断点 ---------- */
@media (min-width:1024px){
  .split{display:flex;gap:1px}
  .drawer{display:none}
}
@media (min-width:960px){
  .body-grid{grid-template-columns:252px minmax(0,1fr);gap:32px}
  .side{position:sticky;top:calc(var(--bar-h) + 16px)}
  .foot-grid{grid-template-columns:1.25fr 1fr 1fr 1.1fr;gap:26px}
}

@media (max-width:520px){
  .brand{font-size:15px;gap:6px}
  .brand-orb{width:17px;height:17px}
  .cta{padding:0 11px;font-size:15px}
  .hero{min-height:64vh;padding-top:28px}
  .hero-copy{text-align:center}
  .foot-grid{grid-template-columns:minmax(0,1fr)}
  .foot-bottom{justify-content:flex-start}
}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .content article.will-in{opacity:1;transform:none}
  .content article.in{transition:none}
  .hero-ico{will-change:auto}
}

@media print{
  .bar,.side{display:none}
  body{background:#fff}
}

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