:root{
  --red:#e2232b;
  --red-deep:#ae1018;
  --red-soft:#ffe7e4;
  --ink:#241a1a;
  --muted:#6d5b5b;
  --line:#f2dcd8;
  --cream:#fff8f6;
  --radius:16px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"PingFang SC","Microsoft YaHei","Hiragino Sans GB",system-ui,-apple-system,"Segoe UI",sans-serif;
  color:var(--ink);
  background-color:var(--cream);
  line-height:1.7;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;
  background:
    radial-gradient(820px 400px at 6% -8%, #ffdfd9 0%, rgba(255,223,217,0) 62%),
    radial-gradient(720px 360px at 96% 2%, #ffe8e1 0%, rgba(255,232,225,0) 60%),
    radial-gradient(900px 460px at 50% 100%, #ffeae5 0%, rgba(255,234,229,0) 66%),
    #fff8f6;
}
img{max-width:100%;height:auto;display:block;}
a{color:inherit;text-decoration:none;}
h1,h2,h3,h4,p,ul,ol{margin:0;}
ul{padding:0;list-style:none;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}
.section{padding:64px 0;scroll-margin-top:84px;}
.section-alt{background:linear-gradient(180deg,rgba(255,230,225,.6),rgba(255,248,246,.15) 72%,rgba(255,248,246,0));}
.section-head{max-width:760px;margin:0 auto 38px;text-align:center;}
.eyebrow{display:inline-block;font-size:13px;font-weight:700;letter-spacing:.14em;color:var(--red-deep);background:var(--red-soft);padding:6px 14px;border-radius:999px;}
h2{font-size:clamp(22px,3vw,34px);line-height:1.3;letter-spacing:-.4px;margin:14px 0 12px;}
.lead{color:var(--muted);font-size:15.5px;}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:13px 26px;border-radius:999px;font-size:15px;font-weight:700;border:1px solid transparent;cursor:pointer;font-family:inherit;transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;}
.btn-primary{background:linear-gradient(135deg,#f1372f,#be1119);color:#fff;box-shadow:0 10px 24px rgba(206,32,36,.26);}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 15px 32px rgba(206,32,36,.36);}
.btn-ghost{background:#fff;color:var(--red-deep);border-color:#f6c9c4;}
.btn-ghost:hover{border-color:var(--red);color:var(--red);transform:translateY(-2px);}
.btn-sm{padding:9px 18px;font-size:13.5px;}

/* header */
.site-header{position:sticky;top:0;z-index:60;background:rgba(255,250,248,.93);backdrop-filter:blur(10px);border-bottom:1px solid var(--line);}
.nav{display:flex;align-items:center;justify-content:space-between;gap:14px;min-height:70px;position:relative;}
.brand{display:inline-flex;align-items:center;gap:10px;flex-shrink:0;}
.ai-page-logo{max-height:38px;width:auto;max-width:100%;}
.brand-text{font-weight:800;font-size:17px;letter-spacing:.02em;color:var(--ink);white-space:nowrap;}
.nav-links{
  display:none;
  gap:0;
  position:absolute;
  top:100%;
  left:0;
  right:0;
  flex-direction:column;
  align-items:stretch;
  background:#fff;
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:6px 18px 14px;
  box-shadow:0 18px 30px rgba(150,40,40,.12);
  max-height:70vh;
  overflow-y:auto;
}
.nav-links.open{display:flex;}
.nav-links a{padding:11px 4px;font-size:14.5px;color:#3d3131;border-bottom:1px dashed #f8e4e1;transition:color .2s ease;}
.nav-links a:hover{color:var(--red);}
.nav-actions{display:flex;align-items:center;gap:10px;}
.nav-toggle{width:42px;height:42px;border-radius:12px;border:1px solid var(--line);background:#fff;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;cursor:pointer;padding:0;}
.nav-toggle span{display:block;width:18px;height:2px;background:var(--red-deep);border-radius:2px;transition:transform .25s ease,opacity .25s ease;}
.nav-toggle.active span:nth-child(1){transform:translateY(6px) rotate(45deg);}
.nav-toggle.active span:nth-child(2){opacity:0;}
.nav-toggle.active span:nth-child(3){transform:translateY(-6px) rotate(-45deg);}
@media(min-width:1080px){
  .nav-toggle{display:none;}
  .nav-links{
    display:flex;
    position:static;
    flex-direction:row;
    align-items:center;
    gap:0;
    background:transparent;
    border:0;
    padding:0;
    box-shadow:none;
    max-height:none;
    overflow:visible;
  }
  .nav-links a{padding:8px 10px;font-size:14px;border:0;border-radius:9px;white-space:nowrap;}
  .nav-links a:hover{background:#fff0ee;color:var(--red);}
}

/* hero */
.hero{padding:52px 0 10px;scroll-margin-top:84px;}
.hero-grid{display:grid;grid-template-columns:1fr;gap:34px;align-items:center;}
.hero h1{font-size:clamp(29px,4.4vw,50px);line-height:1.22;letter-spacing:-1px;margin:18px 0 0;}
.hero h1 em{font-style:normal;color:var(--red);background:linear-gradient(transparent 66%,rgba(226,35,43,.17) 0);}
.hero-sub{color:var(--muted);font-size:16px;margin-top:18px;max-width:560px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:26px;}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 20px;margin-top:24px;}
.hero-points li{display:inline-flex;align-items:center;gap:8px;font-size:14px;color:#4b3c3c;}
.hero-points li::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--red);flex-shrink:0;}
.hero-panel{
  position:relative;
  overflow:hidden;
  border-radius:26px;
  padding:26px 24px;
  color:#fff;
  background:linear-gradient(150deg,#ef3b33 0%,#d01820 48%,#9d0d15 100%);
  box-shadow:0 24px 48px rgba(170,17,25,.26);
  animation:floaty 7s ease-in-out infinite;
}
@keyframes floaty{0%,100%{transform:translateY(0);}50%{transform:translateY(-9px);}}
.hero-panel::before{content:"";position:absolute;width:230px;height:230px;border-radius:50%;background:rgba(255,255,255,.13);top:-84px;right:-64px;}
.hero-panel::after{content:"";position:absolute;width:150px;height:150px;border-radius:50%;background:rgba(255,255,255,.1);bottom:-70px;left:-46px;}
.panel-title{position:relative;font-size:17px;font-weight:800;letter-spacing:.02em;}
.panel-sub{position:relative;font-size:13px;color:rgba(255,255,255,.82);margin-top:6px;}
.panel-chips{position:relative;display:flex;flex-wrap:wrap;gap:8px;margin-top:18px;}
.panel-chips span{font-size:12.5px;padding:6px 12px;border-radius:999px;background:rgba(255,255,255,.16);border:1px solid rgba(255,255,255,.22);}
.panel-foot{position:relative;margin-top:20px;padding-top:16px;border-top:1px solid rgba(255,255,255,.22);font-size:13px;color:rgba(255,255,255,.9);}
@media(min-width:980px){
  .hero-grid{grid-template-columns:1.12fr .88fr;gap:46px;}
}
.stats{display:grid;grid-template-columns:1fr;gap:14px;margin-top:44px;}
@media(min-width:560px){.stats{grid-template-columns:repeat(2,1fr);}}
@media(min-width:980px){.stats{grid-template-columns:repeat(4,1fr);}}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:20px 18px;text-align:center;box-shadow:0 10px 24px rgba(180,60,50,.06);transition:transform .3s ease,box-shadow .3s ease;}
.stat:hover{transform:translateY(-4px);box-shadow:0 16px 32px rgba(180,60,50,.12);}
.stat b{display:block;font-size:24px;font-weight:800;color:var(--red);line-height:1.35;letter-spacing:-.5px;}
.stat span{display:block;font-size:13px;color:var(--muted);margin-top:4px;}

/* grids */
.grid-2,.grid-3,.grid-4{display:grid;gap:18px;grid-template-columns:1fr;align-items:stretch;}
@media(min-width:640px){.grid-2,.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}}
@media(min-width:980px){
  .grid-3{grid-template-columns:repeat(3,1fr);}
  .grid-4{grid-template-columns:repeat(4,1fr);}
}
.card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;}
.card:hover{transform:translateY(-4px);box-shadow:0 18px 36px rgba(178,40,40,.11);border-color:#f5c0bb;}
.card h3{font-size:17px;margin-bottom:8px;letter-spacing:-.2px;}
.card p{font-size:14.5px;color:var(--muted);}
.card-tag{display:inline-block;font-size:12px;color:var(--red-deep);background:#fff0ee;border-radius:999px;padding:4px 11px;margin-top:14px;}

/* about */
.about-layout{display:grid;grid-template-columns:1fr;gap:26px;align-items:start;}
@media(min-width:980px){.about-layout{grid-template-columns:1fr;gap:30px;}}
.about-text{background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px 24px;box-shadow:0 12px 28px rgba(180,60,50,.06);}
.about-text p{color:var(--muted);font-size:15px;}
.about-text p + p{margin-top:12px;}
.about-hl{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px;}
.about-hl span{font-size:13px;padding:7px 13px;border-radius:10px;background:#fff3f1;color:var(--red-deep);border:1px solid #fbd9d5;}

/* tag cloud */
.tagcloud{display:flex;flex-wrap:wrap;gap:9px;margin-top:26px;justify-content:center;}
.tagcloud span{font-size:13px;padding:7px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#4d3d3d;transition:all .25s ease;}
.tagcloud span:hover{background:var(--red);color:#fff;border-color:var(--red);transform:translateY(-2px);}
.tagcloud-title{text-align:center;font-size:13.5px;color:var(--muted);margin-top:30px;letter-spacing:.06em;}

/* studio */
.timeline{display:grid;grid-template-columns:1fr;gap:16px;}
@media(min-width:640px){.timeline{grid-template-columns:repeat(2,1fr);}}
@media(min-width:980px){.timeline{grid-template-columns:repeat(4,1fr);}}
.step{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px 20px;position:relative;transition:transform .3s ease,box-shadow .3s ease;}
.step:hover{transform:translateY(-4px);box-shadow:0 18px 34px rgba(178,40,40,.1);}
.step-num{font-size:26px;font-weight:800;color:#f7cdc9;line-height:1;letter-spacing:-1px;}
.step h3{font-size:16px;margin:10px 0 8px;}
.step p{font-size:14px;color:var(--muted);}
.gallery{display:grid;grid-template-columns:1fr;gap:16px;margin-top:26px;}
@media(min-width:640px){.gallery{grid-template-columns:repeat(3,1fr);}}
.figure-box{
  background:linear-gradient(135deg,#ffe6e2,#fff5f2);
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  aspect-ratio:16/10;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:8px;
}
.figure-box.square{aspect-ratio:1/1;}
.figure-box img{width:100%;height:100%;object-fit:contain;}
figure{margin:0;}
figcaption{font-size:13px;color:var(--muted);text-align:center;margin-top:9px;}

/* review */
.score-card{
  background:linear-gradient(150deg,#ef3b33,#b41019);
  border-radius:22px;
  padding:28px 24px;
  color:#fff;
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  box-shadow:0 20px 40px rgba(170,17,25,.22);
}
.score-left .stars{font-size:22px;letter-spacing:4px;color:#ffe27a;line-height:1;}
.score-left h3{font-size:20px;margin-top:12px;color:#fff;}
.score-left p{font-size:14px;color:rgba(255,255,255,.86);margin-top:6px;}
.score-num{font-size:44px;font-weight:800;line-height:1;letter-spacing:-2px;}
.score-num small{font-size:15px;font-weight:600;opacity:.85;letter-spacing:0;margin-left:6px;}
.table-wrap{overflow-x:auto;margin-top:24px;border:1px solid var(--line);border-radius:var(--radius);background:#fff;}
table{width:100%;border-collapse:collapse;min-width:720px;font-size:14.5px;}
th,td{padding:14px 18px;text-align:left;border-bottom:1px solid #f8e7e4;}
thead th{background:#fff2f0;color:var(--red-deep);font-weight:700;font-size:14px;white-space:nowrap;}
tbody td:first-child{font-weight:700;color:#332626;}
tbody tr:last-child td{border-bottom:0;}
tbody tr:hover{background:#fffaf9;}
td.best{color:var(--red-deep);font-weight:700;}

/* comments */
.comment{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:14px;transition:transform .3s ease,box-shadow .3s ease;}
.comment:hover{transform:translateY(-4px);box-shadow:0 18px 34px rgba(178,40,40,.1);}
.comment p{font-size:14.5px;color:#423333;flex:1;}
.comment-who{display:flex;align-items:center;gap:12px;padding-top:14px;border-top:1px dashed #f6e2df;}
.avatar{width:40px;height:40px;border-radius:50%;background:linear-gradient(135deg,#ffb3ab,#e2232b);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:15px;flex-shrink:0;}
.who-name{font-size:14px;font-weight:700;}
.who-role{font-size:12.5px;color:var(--muted);}

/* token */
.price-card{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;display:flex;flex-direction:column;gap:12px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;}
.price-card:hover{transform:translateY(-4px);box-shadow:0 18px 34px rgba(178,40,40,.11);border-color:#f5c0bb;}
.price-card h3{font-size:17px;}
.price-value{font-size:22px;font-weight:800;color:var(--red);letter-spacing:-.5px;}
.price-card ul li{font-size:14px;color:var(--muted);padding-left:16px;position:relative;}
.price-card ul li+li{margin-top:8px;}
.price-card ul li::before{content:"";position:absolute;left:0;top:10px;width:6px;height:6px;border-radius:50%;background:#f0a49e;}
.price-note{font-size:13px;color:var(--muted);text-align:center;margin-top:20px;}

/* network */
.net-list{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;}
@media(min-width:640px){.net-list{grid-template-columns:repeat(4,1fr);}}
.net-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px;text-align:center;font-size:14px;font-weight:600;color:#3b2d2d;transition:all .25s ease;}
.net-item:hover{background:#fff3f0;border-color:#f6c9c4;color:var(--red-deep);transform:translateY(-3px);}
.net-item span{display:block;font-size:12px;font-weight:400;color:var(--muted);margin-top:4px;}

/* form */
.form-card{background:#fff;border:1px solid var(--line);border-radius:22px;padding:26px 22px;box-shadow:0 16px 34px rgba(180,60,50,.07);}
.form-grid{display:grid;grid-template-columns:1fr;gap:16px;}
@media(min-width:640px){.form-grid{grid-template-columns:repeat(2,1fr);}}
.field{display:flex;flex-direction:column;gap:7px;}
.field.full{grid-column:1/-1;}
.field label{font-size:13.5px;font-weight:700;color:#3c2e2e;}
.field input,.field select,.field textarea{
  width:100%;
  font-family:inherit;
  font-size:14.5px;
  color:var(--ink);
  background:#fffaf9;
  border:1px solid #f0d8d4;
  border-radius:11px;
  padding:11px 13px;
  transition:border-color .2s ease,box-shadow .2s ease,background .2s ease;
}
.field textarea{min-height:104px;resize:vertical;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--red);background:#fff;box-shadow:0 0 0 3px rgba(226,35,43,.1);}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:20px;}
.form-tip{font-size:12.5px;color:var(--muted);}
.form-side{background:#fff3f1;border:1px solid #fbd9d5;border-radius:18px;padding:22px;}
.form-side h3{font-size:16px;margin-bottom:10px;}
.form-side p{font-size:14px;color:#6a5555;}

/* help & wiki */
.mini-card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;transition:transform .3s ease,box-shadow .3s ease;}
.mini-card:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(178,40,40,.1);}
.mini-card h3{font-size:15.5px;margin-bottom:6px;}
.mini-card p{font-size:13.5px;color:var(--muted);}
.term{background:#fff;border:1px solid var(--line);border-radius:14px;padding:18px;}
.term strong{display:block;font-size:15px;color:var(--red-deep);margin-bottom:6px;}
.term span{font-size:13.5px;color:var(--muted);}

/* news */
.news-card{display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;}
.news-card:hover{transform:translateY(-3px);box-shadow:0 14px 28px rgba(178,40,40,.1);border-color:#f5c0bb;}
.news-card h3{font-size:15.5px;transition:color .2s ease;}
.news-card:hover h3{color:var(--red);}
.news-card p{font-size:13.5px;color:var(--muted);}
.news-date{font-size:12px;color:#a08d8d;letter-spacing:.04em;}

/* faq */
.faq-list{display:grid;grid-template-columns:1fr;gap:12px;max-width:920px;margin:0 auto;}
@media(min-width:900px){.faq-list{grid-template-columns:repeat(2,1fr);align-items:start;}}
.faq-item{background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;}
.faq-item.open{border-color:#f2b6b0;box-shadow:0 12px 26px rgba(178,40,40,.1);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:14px;padding:16px 18px;background:transparent;border:0;font-family:inherit;font-size:15px;font-weight:700;color:#312424;text-align:left;cursor:pointer;line-height:1.5;}
.faq-icon{position:relative;width:16px;height:16px;flex-shrink:0;}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;background:var(--red);border-radius:2px;transition:transform .3s ease,opacity .3s ease;}
.faq-icon::before{left:0;top:7px;width:16px;height:2px;}
.faq-icon::after{left:7px;top:0;width:2px;height:16px;}
.faq-item.open .faq-icon::after{transform:rotate(90deg);opacity:0;}
.faq-a{display:grid;grid-template-rows:0fr;transition:grid-template-rows .32s ease;}
.faq-a>div{overflow:hidden;}
.faq-a p{padding:0 18px 16px;font-size:14px;color:var(--muted);}
.faq-item.open .faq-a{grid-template-rows:1fr;}

/* join */
.join-band{
  background:linear-gradient(135deg,#f33a32,#b10f18);
  border-radius:24px;
  padding:34px 26px;
  color:#fff;
  display:grid;
  grid-template-columns:1fr;
  gap:20px;
  align-items:center;
  box-shadow:0 22px 44px rgba(170,17,25,.22);
  position:relative;
  overflow:hidden;
}
.join-band::before{content:"";position:absolute;width:260px;height:260px;border-radius:50%;background:rgba(255,255,255,.1);top:-110px;right:-70px;}
.join-band h2{color:#fff;margin:0 0 10px;font-size:clamp(21px,2.6vw,30px);}
.join-band p{font-size:14.5px;color:rgba(255,255,255,.9);max-width:640px;}
.join-actions{display:flex;flex-wrap:wrap;gap:12px;position:relative;}
.btn-white{background:#fff;color:var(--red-deep);box-shadow:0 10px 22px rgba(0,0,0,.14);}
.btn-white:hover{transform:translateY(-2px);}
.btn-line{background:transparent;color:#fff;border:1px solid rgba(255,255,255,.6);}
.btn-line:hover{background:rgba(255,255,255,.14);}
@media(min-width:900px){.join-band{grid-template-columns:1.4fr auto;padding:40px 40px;}}

/* contact */
.contact-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media(min-width:900px){.contact-grid{grid-template-columns:1.2fr .8fr;align-items:start;}}
.contact-list{display:grid;grid-template-columns:1fr;gap:12px;}
@media(min-width:560px){.contact-list{grid-template-columns:repeat(2,1fr);}}
.contact-item{background:#fff;border:1px solid var(--line);border-radius:14px;padding:16px 18px;}
.contact-item span{display:block;font-size:12.5px;color:var(--muted);margin-bottom:4px;}
.contact-item strong{font-size:14.5px;color:#332626;word-break:break-all;}
.qr-card{background:#fff;border:1px solid var(--line);border-radius:20px;padding:20px;text-align:center;box-shadow:0 14px 30px rgba(180,60,50,.08);}
.qr-card .figure-box{aspect-ratio:1/1;max-width:220px;margin:0 auto;}
.qr-card p{font-size:13.5px;color:var(--muted);margin-top:12px;}
.qr-card strong{display:block;font-size:15px;color:var(--red-deep);margin-top:4px;}

/* footer */
.site-footer{background:#211416;color:#f0e2e0;margin-top:0;padding:46px 0 26px;border-top:3px solid var(--red);}
.footer-grid{display:grid;grid-template-columns:1fr;gap:26px;}
@media(min-width:820px){.footer-grid{grid-template-columns:1.4fr .8fr .8fr;gap:34px;}}
.site-footer .brand-text{color:#fff;}
.footer-desc{font-size:13.5px;color:#c9b4b2;margin-top:14px;max-width:360px;}
.footer-inline{display:flex;flex-wrap:wrap;gap:14px;margin-top:16px;}
.footer-inline a{font-size:13.5px;color:#ffb8b1;transition:color .2s ease;}
.footer-inline a:hover{color:#fff;}
.footer-title{font-size:14px;font-weight:700;color:#fff;margin-bottom:12px;letter-spacing:.04em;}
.footer-col li+li{margin-top:9px;}
.footer-col a,.footer-col span{font-size:13.5px;color:#c9b4b2;}
.footer-col a:hover{color:#ffb8b1;}
.footer-friend{margin-top:30px;padding-top:22px;border-top:1px solid rgba(255,255,255,.12);}
.friend-links{display:flex;flex-wrap:wrap;gap:10px 18px;}
.friend-links a{font-size:13px;color:#c9b4b2;transition:color .2s ease;}
.friend-links a:hover{color:#ffb8b1;}
.footer-bottom{margin-top:22px;padding-top:16px;border-top:1px solid rgba(255,255,255,.12);font-size:12.5px;color:#9d8886;text-align:center;}

/* float tools */
.float-tools{position:fixed;right:16px;bottom:22px;z-index:80;display:flex;flex-direction:column;gap:10px;}
.float-btn{
  width:52px;height:52px;border-radius:16px;border:1px solid #f4c6c1;background:#fff;color:var(--red-deep);
  font-size:13px;font-weight:700;font-family:inherit;cursor:pointer;display:flex;align-items:center;justify-content:center;
  box-shadow:0 10px 22px rgba(178,40,40,.18);transition:transform .25s ease,background .25s ease,color .25s ease,opacity .25s ease;
  padding:0;
}
.float-btn:hover{transform:translateY(-3px);background:var(--red);color:#fff;border-color:var(--red);}
#backTop{opacity:0;pointer-events:none;}
#backTop.show{opacity:1;pointer-events:auto;}
.kf-pop{
  position:fixed;right:16px;bottom:84px;z-index:81;width:230px;background:#fff;border:1px solid var(--line);
  border-radius:18px;padding:16px;box-shadow:0 20px 40px rgba(150,40,40,.18);
  opacity:0;visibility:hidden;transform:translateY(10px);transition:all .28s ease;
}
.kf-pop.open{opacity:1;visibility:visible;transform:translateY(0);}
.kf-pop .figure-box{max-width:170px;margin:0 auto;}
.kf-pop p{font-size:12.5px;color:var(--muted);text-align:center;margin-top:10px;}
.kf-pop strong{display:block;font-size:13.5px;color:var(--red-deep);text-align:center;margin-top:4px;}

/* reveal */
.reveal{transition:opacity .7s ease,transform .7s ease;}
.reveal.pending{opacity:0;transform:translateY(20px);}
.reveal.in{opacity:1;transform:none;}

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