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

:root{
  --neon:#69ff69;
  --cyan:#00ffff;
  --ink:#172617;
  --ink-2:#20381f;
  --ink-3:#2c4d2d;
  --fog:#cdeed6;
  --r:18px;
  --dock-h:76px;
  --chrome:linear-gradient(180deg,#ffffff 0%,#d9ffe5 30%,#69ff69 50%,#00ffff 66%,#f4fffa 96%);
  --bubble:linear-gradient(135deg,#69ff69,#00ffff);
  --font-d:'Fredoka','Nunito',system-ui,-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;
  --font-b:'Nunito',system-ui,-apple-system,'PingFang SC','Microsoft YaHei',sans-serif;
}

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

html{
  scroll-behavior:smooth;
  -webkit-text-size-adjust:100%;
}

body{
  margin:0;
  padding-bottom:calc(var(--dock-h) + 30px);
  overflow-x:hidden;
  font-family:var(--font-b);
  font-size:17px;
  line-height:1.8;
  color:#e9fff0;
  background:
    radial-gradient(1000px 540px at 10% -10%, rgba(0,255,255,.18), transparent 62%),
    radial-gradient(900px 520px at 92% 2%, rgba(105,255,105,.2), transparent 64%),
    radial-gradient(760px 700px at 50% 116%, rgba(0,255,255,.13), transparent 62%),
    var(--ink);
}

h1,h2,h3,h4{
  font-family:var(--font-d);
  font-weight:700;
  line-height:1.25;
}

img{max-width:100%;height:auto}
a{color:var(--cyan)}
p{margin:0 0 16px}

/* 顶部品牌 */
.stage{position:relative;overflow-x:clip}

.masthead{
  position:absolute;
  top:0;left:0;right:0;
  z-index:6;
  display:flex;
  justify-content:center;
  padding:16px 14px;
}

.mark{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 18px;
  border-radius:999px;
  font-family:var(--font-d);
  font-size:16px;
  font-weight:600;
  text-decoration:none;
  color:#0d1c0f;
  background:linear-gradient(180deg,#f6fff9 0%,#baffce 46%,#69ff69 100%);
  box-shadow:inset 0 0 0 1px rgba(255,255,255,.45), 0 8px 22px rgba(105,255,105,.32);
  transition:transform .18s ease, box-shadow .18s ease;
}
.mark:hover{transform:translateY(-2px) scale(1.02);box-shadow:inset 0 0 0 1px rgba(255,255,255,.6), 0 10px 26px rgba(0,255,255,.5)}
.mark-img{display:block;width:18px;height:18px;object-fit:contain}

/* 首屏 */
.hero{
  position:relative;
  min-height:100vh;
  min-height:100svh;
  display:grid;
  place-items:center;
  overflow:hidden;
  isolation:isolate;
  padding:96px 18px 120px;
}

.hero-media{position:absolute;inset:0;z-index:-3}
.hero-media img{width:100%;height:100%;object-fit:cover;filter:saturate(1.15) contrast(1.06)}

.hero-veil{
  position:absolute;inset:0;z-index:-2;
  background:
    linear-gradient(180deg, rgba(23,38,23,.34) 0%, rgba(23,38,23,.7) 58%, var(--ink) 100%),
    radial-gradient(circle at 50% 42%, rgba(0,255,255,.26), transparent 62%);
}

.hero-dots{
  position:absolute;inset:0;z-index:-1;
  background-image:radial-gradient(rgba(105,255,105,.55) 1.4px, transparent 1.6px);
  background-size:22px 22px;
  opacity:.55;
  -webkit-mask-image:radial-gradient(circle at 50% 46%, #000 18%, transparent 78%);
  mask-image:radial-gradient(circle at 50% 46%, #000 18%, transparent 78%);
}

.hero-copy{
  position:relative;
  width:100%;
  max-width:min(880px, 90vw);
  text-align:center;
}

.hero-copy h1{
  margin:0 auto 26px;
  max-width:18ch;
  font-size:clamp(31px, 7.2vw, 68px);
  line-height:1.18;
  letter-spacing:.01em;
  background:var(--chrome);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  filter:drop-shadow(0 2px 0 rgba(0,0,0,.28)) drop-shadow(0 0 24px rgba(0,255,255,.55));
}

.hero-jump{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:52px;height:52px;
  border-radius:50%;
  font-size:19px;
  text-decoration:none;
  color:#0c1c0f;
  background:var(--bubble);
  box-shadow:0 0 0 6px rgba(105,255,105,.16), 0 0 26px rgba(0,255,255,.6);
  transition:transform .2s ease;
}
.hero-jump:hover{transform:translateY(4px) scale(1.06)}

/* 主区 */
main{display:block;padding:0 18px}

.wrap{
  display:grid;
  grid-template-columns:minmax(0,1fr);
  gap:26px;
  max-width:1060px;
  margin:0 auto;
  padding:36px 0 8px;
}

.panel{
  position:relative;
  padding:clamp(20px, 3.2vw, 36px);
  border-radius:var(--r);
  background:linear-gradient(160deg, rgba(44,77,45,.85) 0%, rgba(28,48,29,.94) 100%);
  box-shadow:0 0 0 1px rgba(105,255,105,.16), 0 18px 48px rgba(0,0,0,.28);
  overflow:hidden;
}
.panel::before{
  content:'✦';
  position:absolute;
  top:10px;right:18px;
  font-size:20px;
  color:var(--cyan);
  opacity:.6;
}
.panel::after{
  content:'';
  position:absolute;
  left:-40px;top:-40px;
  width:170px;height:170px;
  border-radius:50%;
  background:radial-gradient(circle, rgba(0,255,255,.28), transparent 68%);
  pointer-events:none;
}

.panel-title{
  margin:0 0 8px;
  font-size:clamp(24px, 4.4vw, 38px);
  background:var(--chrome);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  filter:drop-shadow(0 0 16px rgba(0,255,255,.45));
}

.subtitle{
  margin:0 0 22px;
  font-size:17px;
  line-height:1.7;
  color:#a9ffcd;
}

/* 正文 */
.prose{position:relative}
.prose > article{
  margin:0 0 42px;
  padding:22px 18px;
  border-radius:var(--r);
  background:rgba(23,38,23,.5);
  scroll-margin-top:28px;
  scroll-margin-bottom:calc(var(--dock-h) + 26px);
}
.prose > article:nth-child(odd){background:rgba(105,255,105,.07)}
.prose > article:last-child{margin-bottom:0}

.prose h2{
  margin:0 0 10px;
  font-size:clamp(21px, 3.4vw, 28px);
  color:#baffdd;
  text-shadow:0 0 16px rgba(0,255,255,.55);
}
.prose h2::before{
  content:'✦ ';
  color:var(--neon);
  text-shadow:0 0 12px rgba(105,255,105,.9);
}
.prose h3{
  margin:22px 0 8px;
  font-size:19px;
  color:#c6ffdf;
}
.prose h2 + p,
.prose h3 + p{color:#e3ffec}

.prose p{margin:0 0 16px;line-height:1.9}
.prose p:last-child{margin-bottom:0}

.prose ul,.prose ol{margin:0 0 16px;padding-left:1.25em}
.prose li{margin:0 0 8px}
.prose li::marker{color:var(--neon)}

.prose a{color:var(--cyan);text-underline-offset:3px}
.prose a:hover{color:var(--neon);text-shadow:0 0 12px rgba(105,255,105,.75)}

.prose img{display:block;margin:0 0 16px;border-radius:var(--r)}

.prose blockquote{
  margin:0 0 16px;
  padding:14px 18px;
  border-left:4px solid var(--neon);
  border-radius:0 var(--r) var(--r) 0;
  background:rgba(105,255,105,.09);
  color:#d8ffe3;
}
.prose blockquote p:last-child{margin-bottom:0}

.prose time{
  display:inline-block;
  font-size:16px;
  color:#8fe6b6;
}

/* 侧栏 */
.rail{
  padding:16px;
  border-radius:var(--r);
  background:linear-gradient(180deg, rgba(0,255,255,.14), rgba(105,255,105,.08));
  box-shadow:0 0 0 1px rgba(0,255,255,.2) inset;
}
.rail-cap{
  margin:0 0 10px;
  font-family:var(--font-d);
  font-size:16px;
  letter-spacing:.1em;
  color:#a6ffd0;
}
.rail ul{
  display:grid;
  gap:6px;
  margin:0;padding:0;
  list-style:none;
}
.rail a{
  display:flex;
  align-items:center;
  min-height:44px;
  padding:8px 12px;
  border-radius:12px;
  font-size:16px;
  color:#e2fff0;
  text-decoration:none;
  background:rgba(23,38,23,.4);
  transition:background .18s ease, color .18s ease, transform .18s ease;
}
.rail a:hover{background:var(--neon);color:#0c1c0f;transform:translateX(3px)}
.rail a.on{background:var(--cyan);color:#08221f}

/* 底部固定条 */
.dock{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:50;
  display:flex;
  align-items:center;
  gap:10px;
  padding:10px 12px calc(10px + env(safe-area-inset-bottom, 0px));
  background:rgba(14,27,15,.88);
  -webkit-backdrop-filter:blur(14px) saturate(1.4);
  backdrop-filter:blur(14px) saturate(1.4);
  border-top:2px solid rgba(105,255,105,.42);
  box-shadow:0 -10px 34px rgba(0,255,255,.14);
}
.dock::before{
  content:'';
  position:absolute;
  left:0;right:0;top:0;
  height:2px;
  background:linear-gradient(90deg, transparent, var(--cyan), var(--neon), transparent);
  opacity:.9;
}

.dock-nav{
  flex:1;
  min-width:0;
  overflow-x:auto;
  scrollbar-width:none;
  -webkit-overflow-scrolling:touch;
}
.dock-nav::-webkit-scrollbar{display:none}

.dock-nav ul{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  margin:0;padding:0;
  list-style:none;
}
.dock-nav li{flex:0 0 auto}
.dock-nav li.brand{flex:1 1 auto;display:flex;justify-content:center;min-width:0}

.dock-nav a{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  min-height:44px;
  padding:0 15px;
  border-radius:999px;
  border:1px solid rgba(105,255,105,.28);
  background:rgba(105,255,105,.1);
  font-size:16px;
  font-weight:600;
  color:#dcffe6;
  text-decoration:none;
  white-space:nowrap;
  transition:transform .18s ease, background .18s ease, color .18s ease, box-shadow .18s ease;
}
.dock-nav a:hover{transform:translateY(-2px);background:rgba(0,255,255,.22);box-shadow:0 0 18px rgba(0,255,255,.45)}
.dock-nav a.on{background:linear-gradient(180deg,#d3ffe0,#69ff69);color:#0d1f10;box-shadow:0 0 20px rgba(105,255,105,.62)}
.dock-nav a.dim{opacity:.34}
.dock-nav li.brand a{border:none;font-family:var(--font-d);box-shadow:0 0 22px rgba(105,255,105,.42)}

.dock-search{flex:0 0 auto}
.dock-search input{
  width:170px;
  min-height:44px;
  padding:0 16px;
  border-radius:999px;
  border:1px solid rgba(0,255,255,.45);
  background:rgba(0,255,255,.09);
  color:#e8ffff;
  font-family:var(--font-b);
  font-size:16px;
  transition:width .2s ease, box-shadow .2s ease;
}
.dock-search input::placeholder{color:#9fd9c4;opacity:1}
.dock-search input:focus{outline:none;width:210px;box-shadow:0 0 0 2px var(--neon), 0 0 20px rgba(0,255,255,.5)}

/* 回到顶部 */
.totop{
  position:fixed;
  right:14px;
  bottom:calc(var(--dock-h) + 16px);
  z-index:45;
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 16px;
  border-radius:999px;
  font-size:16px;
  font-weight:700;
  text-decoration:none;
  color:#0c1c0f;
  background:var(--bubble);
  box-shadow:0 0 22px rgba(105,255,105,.65);
  transition:transform .18s ease;
}
.totop:hover{transform:translateY(-3px)}

/* 页脚 */
.foot{
  margin-top:60px;
  padding:42px 18px 30px;
  border-top:2px solid rgba(105,255,105,.3);
  background:linear-gradient(180deg, rgba(0,255,255,.1), rgba(105,255,105,.06) 38%, rgba(9,18,10,.92));
}
.foot-grid{
  display:grid;
  gap:24px;
  grid-template-columns:1fr 1fr;
  max-width:1060px;
  margin:0 auto;
  padding:0 0 8px;
}
.foot-brand{
  margin:0 0 6px;
  font-family:var(--font-d);
  font-size:20px;
  color:#c8ffdd;
}
.foot-col address{
  font-style:normal;
  font-size:16px;
  color:#9fe0bb;
  word-break:break-all;
}
.foot-cap{
  margin:0 0 8px;
  font-family:var(--font-d);
  font-size:16px;
  letter-spacing:.1em;
  color:#8ff3c0;
}
.foot-key{
  margin:0;
  font-size:16px;
  color:#b6e9c8;
  word-break:break-word;
}
.foot-links{margin:0;padding:0;list-style:none}
.foot-links a{
  display:block;
  padding:9px 0;
  min-height:40px;
  font-size:16px;
  color:#d8ffe6;
  text-decoration:none;
}
.foot-links a:hover{color:var(--neon);text-shadow:0 0 12px rgba(105,255,105,.8)}

.mega{
  margin:26px 0 16px;
  font-family:var(--font-d);
  font-weight:700;
  font-size:clamp(38px, 12.5vw, 140px);
  line-height:.92;
  text-align:center;
  letter-spacing:.02em;
  overflow:hidden;
  background:var(--chrome);
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
  filter:drop-shadow(0 0 22px rgba(0,255,255,.35));
}

.foot-base{
  margin:0;
  text-align:center;
  font-size:16px;
  color:#96d3ad;
}

/* 动效 */
@media (prefers-reduced-motion: no-preference){
  .hero-dots{animation:gridDrift 22s linear infinite}
  .hero-jump{animation:bobble 4s ease-in-out infinite}
  .mark-top{animation:bobble 5.5s ease-in-out infinite}
}

@keyframes gridDrift{
  to{background-position:22px 22px}
}
@keyframes bobble{
  50%{transform:translateY(-5px)}
}

/* 断点 */
@media (min-width:620px){
  .foot-grid{grid-template-columns:1.25fr 1fr 1fr}
}

@media (min-width:820px){
  .foot-grid{grid-template-columns:1.4fr 1fr .85fr .85fr}
}

@media (min-width:900px){
  .wrap{padding-top:46px}
}

@media (max-width:899px){
  .dock-search{display:none}
  .dock-nav ul{justify-content:flex-start}
}

@media (min-width:980px){
  .wrap{grid-template-columns:minmax(0,1fr) 202px;align-items:start}
  .rail{position:sticky;top:26px}
}

@media (max-width:979px){
  .rail{display:none}
}

@media (max-width:619px){
  body{font-size:16px}
  .hero{padding-top:88px}
  main{padding:0 13px}
  .panel{padding:18px 15px}
  .prose > article{padding:18px 14px}
  .foot{padding:34px 14px 26px}
  .totop{right:10px;padding:0 13px}
}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto}
  *,
  *::before,
  *::after{animation:none !important;transition:none !important}
}

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