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

:root{
  --neon:#87ff71;
  --cyan:#01cdfe;
  --pink:#ff71ce;
  --violet:#b967ff;
  --ink:#192617;
  --bg:#0c140d;
  --line:rgba(135,255,113,.26);
  --text:#d9e8d8;
  --muted:#8fb394;
  --display:'Barlow Condensed','Barlow',system-ui,-apple-system,sans-serif;
}

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

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

body{
  margin:0;
  padding:0 0 96px;
  background:
    radial-gradient(1100px 560px at 82% -8%, rgba(255,113,206,.22), transparent 62%),
    radial-gradient(900px 520px at 8% -2%, rgba(1,205,254,.18), transparent 60%),
    var(--bg);
  background-attachment:fixed;
  color:var(--text);
  font-family:'Barlow',system-ui,-apple-system,'Segoe UI',sans-serif;
  font-size:17px;
  line-height:1.75;
  overflow-x:hidden;
}

body::after{
  content:'';
  position:fixed;
  inset:0;
  z-index:30;
  pointer-events:none;
  background:repeating-linear-gradient(to bottom, rgba(0,0,0,.20) 0 1px, rgba(0,0,0,0) 1px 3px);
  opacity:.55;
}

a:focus-visible{outline:2px solid var(--cyan);outline-offset:2px}

/* ---------- 底部固定条 ---------- */
.bar{
  position:fixed;
  left:0;right:0;bottom:0;
  z-index:50;
  display:flex;
  align-items:center;
  gap:8px;
  padding:5px 18px;
  background:rgba(11,19,12,.93);
  border-top:1px solid var(--line);
  box-shadow:0 -12px 34px rgba(0,0,0,.5);
  backdrop-filter:blur(12px);
}

.bar-list{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:2px;
  flex:1;
  min-width:0;
  margin:0;
  padding:0;
  list-style:none;
}

.bar a{
  display:inline-flex;
  align-items:center;
  min-height:44px;
  padding:0 10px;
  font-size:16px;
  letter-spacing:.05em;
  color:#b9d4b8;
  text-decoration:none;
  white-space:nowrap;
  transition:color .2s ease,text-shadow .2s ease;
}

.bar a:hover,.bar a:focus-visible{
  color:var(--neon);
  text-shadow:0 0 12px rgba(135,255,113,.85);
}

.bar .brand{
  font-family:var(--display);
  font-size:23px;
  font-weight:600;
  letter-spacing:.3em;
  color:#eafff0;
  padding:0 16px;
  text-shadow:0 0 14px rgba(1,205,254,.9),0 0 26px rgba(135,255,113,.55);
}

.bar .tel{
  flex:none;
  padding:0 18px;
  border:1px solid rgba(1,205,254,.55);
  border-radius:999px;
  color:var(--cyan);
  box-shadow:inset 0 0 14px rgba(1,205,254,.22);
}

/* ---------- 骨架 ---------- */
main{
  display:grid;
  grid-template-columns:216px minmax(0,1fr);
  gap:0 44px;
  max-width:1240px;
  margin:0 auto;
  padding:0 26px;
}

.rail{
  grid-column:1;
  position:sticky;
  top:22px;
  align-self:start;
  padding:28px 0;
}

.rail-h{
  margin:0;
  font-family:var(--display);
  font-size:22px;
  font-weight:600;
  letter-spacing:.26em;
  color:#eafff0;
  text-shadow:0 0 12px rgba(1,205,254,.7);
}

.subtitle{
  margin:8px 0 0;
  font-size:16px;
  line-height:1.6;
  letter-spacing:.02em;
  color:var(--muted);
}

.rail ol{
  list-style:none;
  counter-reset:r;
  margin:18px 0 0;
  padding:0;
  display:grid;
  gap:2px;
}

.rail li{counter-increment:r}

.rail a{
  display:flex;
  align-items:center;
  gap:10px;
  min-height:40px;
  padding:0 10px;
  font-size:16px;
  color:#cfe9cd;
  text-decoration:none;
  border-left:2px solid transparent;
  transition:background .2s ease,color .2s ease,border-color .2s ease;
}

.rail a::before{
  content:counter(r,decimal-leading-zero);
  font-family:var(--display);
  font-size:14px;
  letter-spacing:.12em;
  color:var(--cyan);
  opacity:.75;
}

.rail a:hover{
  color:#fff;
  background:rgba(135,255,113,.08);
  border-left-color:var(--neon);
}

.doc{grid-column:2;min-width:0}

/* ---------- 首屏 ---------- */
.hero{
  display:grid;
  grid-template-columns:minmax(0,1.06fr) minmax(0,.94fr);
  align-items:center;
  gap:34px;
  min-height:100vh;
  min-height:100svh;
  padding:48px 0 64px;
}

.hero-h1{
  margin:0 0 18px;
  font-family:var(--display);
  font-weight:600;
  font-size:clamp(44px,6.6vw,92px);
  line-height:.96;
  letter-spacing:.01em;
  color:#f5fff1;
  text-shadow:
    0 0 20px rgba(135,255,113,.5),
    3px 0 0 rgba(1,205,254,.55),
   -3px 0 0 rgba(255,113,206,.42);
}

.lede{
  max-width:44ch;
  margin:0;
  font-size:17px;
  line-height:1.75;
  color:#c6dcc6;
}

.hero-art{
  position:relative;
  overflow:hidden;
  min-height:300px;
  height:min(66vh,540px);
  border:1px solid rgba(1,205,254,.45);
  border-radius:18px;
  background:linear-gradient(180deg,var(--pink),var(--cyan) 55%,var(--violet));
}

.hero-art img{
  display:block;
  width:100%;
  height:100%;
  object-fit:cover;
  filter:saturate(1.08) contrast(1.03);
}

.hero-art::after{
  content:'';
  position:absolute;
  inset:0;
  pointer-events:none;
  background:linear-gradient(180deg,rgba(255,113,206,.30),rgba(1,205,254,.18) 58%,rgba(25,38,23,.72));
  mix-blend-mode:screen;
}

/* ---------- 正文 ---------- */
.doc > article:not(.hero){
  padding:58px 0;
  border-top:1px solid rgba(135,255,113,.14);
  scroll-margin-top:28px;
}

.doc h2{
  margin:0 0 14px;
  font-family:var(--display);
  font-weight:600;
  font-size:clamp(26px,3.3vw,42px);
  line-height:1.16;
  letter-spacing:.02em;
  color:#f2fff0;
  text-shadow:0 0 16px rgba(135,255,113,.32);
}

.doc h3{
  margin:30px 0 12px;
  font-family:var(--display);
  font-size:22px;
  letter-spacing:.06em;
  color:var(--cyan);
}

.doc p{margin:0 0 18px;max-width:72ch}
.doc ul,.doc ol{margin:0 0 18px;padding-left:22px;max-width:72ch}
.doc li{margin:0 0 10px}
.doc a{color:var(--neon);text-decoration:underline;text-underline-offset:3px}
.doc a:hover{color:#fff}
.doc strong{color:#f6fff4}

.doc blockquote{
  margin:26px 0;
  padding:16px 22px;
  border-left:3px solid var(--cyan);
  border-radius:0 18px 18px 0;
  background:rgba(1,205,254,.08);
  color:#e2f1e0;
}

.doc blockquote p:last-child{margin-bottom:0}
.doc figure{margin:26px 0}
.doc img{max-width:100%;height:auto;border-radius:18px;border:1px solid var(--line)}
.doc table{width:100%;border-collapse:collapse;margin:0 0 22px;font-size:16px}
.doc th,.doc td{border:1px solid var(--line);padding:10px 12px;text-align:left}
.doc th{background:rgba(135,255,113,.09);color:#eafff0;font-weight:600}
.doc code{
  font-family:ui-monospace,Menlo,Consolas,monospace;
  font-size:15px;
  padding:1px 5px;
  border-radius:4px;
  background:rgba(135,255,113,.12);
}

/* ---------- 页脚 ---------- */
.foot{
  margin-top:78px;
  padding:46px 0 26px;
  border-top:1px solid var(--line);
  background-image:
    linear-gradient(rgba(135,255,113,.07) 1px,transparent 1px),
    linear-gradient(90deg,rgba(135,255,113,.07) 1px,transparent 1px),
    linear-gradient(180deg,rgba(1,205,254,.09),rgba(25,38,23,.95));
  background-size:44px 44px,44px 44px,100% 100%;
}

.foot-grid{
  display:grid;
  grid-template-columns:1.5fr 1fr 1fr 1.1fr;
  gap:30px 26px;
  max-width:1240px;
  margin:0 auto;
  padding:0 26px;
}

#lianxi{scroll-margin-top:24px}

.foot address{font-style:normal;display:grid;gap:8px}

.foot-brand{
  font-family:var(--display);
  font-size:21px;
  letter-spacing:.26em;
  color:#eafff0;
  text-shadow:0 0 12px rgba(1,205,254,.6);
}

.foot-host{font-size:16px;letter-spacing:.06em;color:var(--muted)}

.foot ul{list-style:none;margin:0;padding:0;display:grid;gap:2px}

.foot a{
  display:inline-flex;
  align-items:center;
  min-height:40px;
  font-size:16px;
  color:#c3ddc4;
  text-decoration:none;
}

.foot a:hover{color:var(--cyan);text-shadow:0 0 10px rgba(1,205,254,.7)}

.foot dl{margin:0;display:grid;gap:2px}
.foot dt,.foot dd{margin:0}
.foot dd{margin-bottom:8px}
.foot dd a{color:#a9c9aa}

.foot-copy{
  max-width:1240px;
  margin:34px auto 0;
  padding:16px 26px 0;
  border-top:1px solid rgba(135,255,113,.16);
  text-align:center;
  font-size:16px;
  letter-spacing:.08em;
  color:#7fa585;
}

/* ---------- 动效 ---------- */
.js .rv{
  opacity:0;
  transform:translateY(20px);
  transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1);
}

.js .rv.in{opacity:1;transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .js .rv{opacity:1;transform:none;transition:none}
  .hero-h1{text-shadow:0 0 14px rgba(135,255,113,.4)}
}

/* ---------- 窄屏 ---------- */
@media (max-width:960px){
  main{
    grid-template-columns:minmax(0,1fr);
    padding:0 18px;
  }

  .rail{
    order:2;
    grid-column:1;
    position:static;
    padding:20px 0;
    border-top:1px solid rgba(135,255,113,.16);
  }

  .rail ol{
    display:flex;
    flex-wrap:wrap;
    gap:8px;
    margin-top:14px;
  }

  .rail a{
    min-height:40px;
    padding:0 12px;
    border:1px solid var(--line);
    border-left:1px solid var(--line);
    border-radius:999px;
  }

  .rail a:hover{border-color:var(--cyan)}

  .doc{order:1;grid-column:1}

  .hero{
    grid-template-columns:minmax(0,1fr);
    min-height:0;
    padding:26px 0 34px;
    gap:22px;
  }

  .hero-h1{font-size:clamp(38px,11vw,62px)}

  .hero-art{
    height:auto;
    min-height:220px;
    aspect-ratio:4/3;
  }

  .foot-grid{grid-template-columns:1fr 1fr;gap:22px}
  .foot-copy{padding:16px 18px 0}

  .bar{padding:4px 10px}
  .bar-list{
    justify-content:flex-start;
    overflow-x:auto;
    scrollbar-width:none;
    -webkit-overflow-scrolling:touch;
  }
  .bar-list::-webkit-scrollbar{display:none}
  .bar a{padding:0 9px}
}

@media (max-width:560px){
  body{padding-bottom:88px}
  .foot{padding-top:34px;margin-top:54px}
  .foot-grid{grid-template-columns:1fr}
  .doc > article:not(.hero){padding:42px 0}
  .doc h2{font-size:clamp(24px,7vw,32px)}
}

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