:root{
  --ink:#0e1330;
  --ink-2:#3a4268;
  --ink-3:#6a7294;
  --line:rgba(14,19,48,.10);
  --brand:#1c5cff;
  --brand-dark:#1442c9;
  --mint:#00c2a8;
  --pink:#ff4d86;
  --amber:#ff8a1f;
  --radius:18px;
  --shadow-sm:0 2px 12px rgba(18,40,100,.06);
  --shadow-md:0 16px 38px rgba(18,48,120,.11);
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei","Helvetica Neue",Arial,sans-serif;
  color:var(--ink);
  line-height:1.65;
  background-color:#f8faff;
  background-image:
    radial-gradient(1100px 620px at 10% 0%, #e8f0ff 0%, rgba(232,240,255,0) 62%),
    radial-gradient(900px 560px at 94% 10%, #fff1e8 0%, rgba(255,241,232,0) 60%),
    radial-gradient(900px 640px at 50% 100%, #e9faf5 0%, rgba(233,250,245,0) 62%);
  background-repeat:no-repeat;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;}
a{color:var(--brand);text-decoration:none;}
h1,h2,h3,h4{margin:0;line-height:1.3;font-weight:800;letter-spacing:-.01em;}
p{margin:0;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 24px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.9);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;min-height:70px;flex-wrap:nowrap;
}
.brand{display:flex;align-items:center;gap:10px;flex:none;}
.ai-page-logo{max-height:38px;width:auto;display:block;}
.nav-links{
  display:flex;align-items:center;gap:0;
  list-style:none;margin:0;padding:0;flex-wrap:nowrap;
}
.nav-links a{
  display:block;padding:8px 11px;border-radius:10px;
  font-size:14px;font-weight:500;color:var(--ink-2);white-space:nowrap;
  transition:color .2s,background .2s;
}
.nav-links a:hover{color:var(--brand);background:#eef3ff;}
.nav-actions{display:flex;align-items:center;gap:12px;flex:none;}
.nav-toggle{
  display:none;flex-direction:column;justify-content:center;gap:5px;
  width:42px;height:42px;padding:0 10px;border-radius:12px;
  border:1px solid var(--line);background:#fff;cursor:pointer;
}
.nav-toggle span{display:block;height:2px;width:100%;background:var(--ink);border-radius:2px;transition:transform .25s,opacity .25s;}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 30px;border-radius:999px;border:1px solid transparent;
  font-size:16px;font-weight:700;font-family:inherit;cursor:pointer;
  transition:transform .22s,box-shadow .22s,background .22s,color .22s,border-color .22s;
}
.btn-primary{
  background:linear-gradient(120deg,#1c5cff 0%,#4b8bff 52%,#00c2a8 100%);
  color:#fff;
  box-shadow:0 14px 28px rgba(28,92,255,.30);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 20px 36px rgba(28,92,255,.36);}
.btn-ghost{background:#fff;color:var(--ink);border-color:rgba(28,92,255,.28);box-shadow:var(--shadow-sm);}
.btn-ghost:hover{color:var(--brand);border-color:var(--brand);transform:translateY(-2px);}
.btn:active{transform:translateY(0) scale(.985);}
.btn-sm{padding:10px 20px;font-size:14px;}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:74px 0 68px;}
.hero::before{
  content:"";position:absolute;left:-10%;right:-10%;top:-22%;height:640px;z-index:0;
  background:
    radial-gradient(420px 320px at 18% 34%, rgba(28,92,255,.16), rgba(28,92,255,0) 70%),
    radial-gradient(380px 300px at 82% 22%, rgba(255,77,134,.13), rgba(255,77,134,0) 70%),
    radial-gradient(430px 320px at 58% 82%, rgba(0,194,168,.14), rgba(0,194,168,0) 70%);
  filter:blur(4px);pointer-events:none;
}
.hero-orb{position:absolute;border-radius:50%;z-index:0;pointer-events:none;}
.orb-1{width:170px;height:170px;left:3%;top:14%;background:linear-gradient(135deg,rgba(28,92,255,.18),rgba(0,194,168,.10));animation:float1 9s ease-in-out infinite;}
.orb-2{width:110px;height:110px;right:7%;top:9%;background:linear-gradient(135deg,rgba(255,77,134,.16),rgba(255,138,31,.10));animation:float2 11s ease-in-out infinite;}
.orb-3{width:200px;height:200px;right:14%;bottom:-70px;background:linear-gradient(135deg,rgba(0,194,168,.14),rgba(28,92,255,.10));animation:float1 13s ease-in-out infinite;}
@keyframes float1{0%,100%{transform:translate3d(0,0,0);}50%{transform:translate3d(0,-18px,0);}}
@keyframes float2{0%,100%{transform:translate3d(0,0,0);}50%{transform:translate3d(12px,14px,0);}}
.hero .container{position:relative;z-index:2;}
.hero-inner{max-width:880px;margin:0 auto;text-align:center;}
.eyebrow{
  display:inline-block;padding:7px 18px;border-radius:999px;
  background:rgba(255,255,255,.85);border:1px solid rgba(28,92,255,.22);
  color:var(--brand);font-size:13.5px;font-weight:700;letter-spacing:.02em;
  box-shadow:var(--shadow-sm);
}
.hero h1{
  font-size:clamp(30px,5.4vw,52px);
  margin:22px 0 18px;letter-spacing:-.02em;
}
.hero h1 em{
  font-style:normal;position:relative;display:inline-block;
  color:var(--brand);
  background:linear-gradient(180deg,rgba(0,194,168,0) 72%,rgba(0,194,168,.28) 72%);
}
.hero-sub{
  max-width:700px;margin:0 auto;font-size:clamp(15px,2.1vw,17px);
  color:var(--ink-2);line-height:1.9;
}
.hero-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:14px;margin-top:30px;}
.hero-tags{
  display:flex;flex-wrap:wrap;justify-content:center;gap:10px;
  list-style:none;padding:0;margin:24px 0 0;
}
.hero-tags li{
  padding:6px 15px;border-radius:999px;font-size:13px;font-weight:600;
  color:var(--ink-2);background:rgba(255,255,255,.9);
  border:1px solid var(--line);box-shadow:var(--shadow-sm);
}
.hero-metrics{
  display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:46px;
}
.metric{
  background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:20px 18px;text-align:left;box-shadow:var(--shadow-sm);
  transition:transform .25s,box-shadow .25s;
}
.metric:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.metric-num{font-size:26px;font-weight:800;color:var(--brand);line-height:1.25;}
.metric-label{font-size:13.5px;color:var(--ink-3);margin-top:4px;}

/* ---------- sections ---------- */
.section{padding:72px 0;position:relative;}
.section-alt{
  background:linear-gradient(180deg,rgba(255,255,255,.78),rgba(255,255,255,.42));
  border-top:1px solid rgba(14,19,48,.06);
  border-bottom:1px solid rgba(14,19,48,.06);
}
.section-head{max-width:740px;margin:0 auto 40px;text-align:center;}
.section-head h2{font-size:clamp(24px,3.4vw,34px);margin-bottom:14px;}
.section-head p{color:var(--ink-3);font-size:15.5px;line-height:1.85;}
.section-head .kicker{
  display:inline-block;margin-bottom:14px;font-size:13px;font-weight:700;
  letter-spacing:.14em;color:var(--brand);text-transform:uppercase;
}

/* ---------- cards ---------- */
.grid{display:grid;gap:20px;}
.grid-2{grid-template-columns:repeat(auto-fit,minmax(280px,1fr));}
.grid-3{grid-template-columns:repeat(auto-fit,minmax(258px,1fr));}
.card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:24px;box-shadow:var(--shadow-sm);
  transition:transform .25s,box-shadow .25s,border-color .25s;
}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);border-color:rgba(28,92,255,.24);}
.card h3{font-size:17px;margin-bottom:10px;}
.card p{font-size:14.5px;color:var(--ink-3);line-height:1.85;}
.card-title-row{display:flex;align-items:center;gap:10px;margin-bottom:10px;}
.dot{width:9px;height:9px;border-radius:50%;flex:none;background:linear-gradient(135deg,#1c5cff,#00c2a8);box-shadow:0 0 0 4px rgba(28,92,255,.10);}

.intro-lead{
  max-width:820px;margin:0 auto 34px;text-align:center;
  font-size:15.5px;color:var(--ink-2);line-height:1.95;
}
.feature-list{
  list-style:none;margin:0;padding:0;
  display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(248px,1fr));
}
.feature-list li{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;
  box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
}
.feature-list li:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.feature-list h3{font-size:16px;margin-bottom:8px;}
.feature-list p{font-size:14px;color:var(--ink-3);line-height:1.8;}

/* ---------- steps ---------- */
.steps{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(196px,1fr));}
.step{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px 20px;
  box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.step-num{
  width:36px;height:36px;border-radius:11px;margin-bottom:14px;
  display:flex;align-items:center;justify-content:center;
  font-weight:800;font-size:15px;color:#fff;
  background:linear-gradient(135deg,#1c5cff,#00c2a8);
}
.step h3{font-size:16px;margin-bottom:8px;}
.step p{font-size:14px;color:var(--ink-3);line-height:1.8;}

/* ---------- tags ---------- */
.tag-block{margin-top:36px;background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow-sm);}
.tag-block h3{font-size:16px;margin-bottom:6px;}
.tag-block .tag-hint{font-size:13.5px;color:var(--ink-3);margin-bottom:18px;}
.tags{display:flex;flex-wrap:wrap;gap:10px;}
.tags span{
  padding:7px 15px;border-radius:999px;font-size:13.5px;font-weight:500;
  background:#f7faff;border:1px solid var(--line);color:var(--ink-2);
  transition:transform .2s,background .2s,color .2s,border-color .2s;
}
.tags span:hover{transform:translateY(-2px);background:#eaf1ff;border-color:rgba(28,92,255,.35);color:var(--brand);}

/* ---------- table ---------- */
.table-wrap{
  overflow-x:auto;-webkit-overflow-scrolling:touch;
  border:1px solid var(--line);border-radius:16px;background:#fff;
  box-shadow:var(--shadow-sm);
}
table{width:100%;border-collapse:collapse;min-width:760px;}
thead th{
  background:#f1f6ff;color:var(--ink);font-size:14px;font-weight:700;
  text-align:left;padding:15px 18px;white-space:nowrap;
  border-bottom:1px solid var(--line);
}
tbody td{
  padding:14px 18px;border-bottom:1px solid var(--line);
  font-size:14.5px;color:var(--ink-2);vertical-align:top;
}
tbody tr:last-child td{border-bottom:none;}
tbody tr:hover td{background:#fafcff;}
td.hl,th.hl{background:#f4f8ff;color:#12305f;font-weight:600;}
td.hl{color:var(--brand-dark);}
.table-note{font-size:13px;color:var(--ink-3);margin-top:14px;text-align:center;}

/* ---------- score ---------- */
.score-band{
  display:flex;flex-direction:column;gap:26px;
  background:linear-gradient(135deg,#ffffff 0%,#f3f8ff 58%,#eefaf7 100%);
  border:1px solid rgba(28,92,255,.18);border-radius:22px;
  padding:30px;box-shadow:var(--shadow-md);margin-bottom:30px;
}
.score-main{flex:none;text-align:center;padding-bottom:6px;}
.score-value{font-size:54px;font-weight:800;line-height:1;color:var(--brand);}
.score-value span{font-size:20px;font-weight:700;color:var(--ink-3);margin-left:2px;}
.score-stars{color:#ff9f1c;font-size:20px;letter-spacing:4px;margin-top:10px;}
.score-note{font-size:14px;color:var(--ink-2);margin-top:8px;font-weight:600;}
.score-points{
  list-style:none;margin:0;padding:0;
  display:grid;gap:10px 22px;grid-template-columns:1fr;flex:1;
}
.score-points li{
  position:relative;padding-left:20px;font-size:14.5px;color:var(--ink-2);
}
.score-points li::before{
  content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;
  background:linear-gradient(135deg,#1c5cff,#00c2a8);
}

/* ---------- price ---------- */
.price-grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));}
.price-card{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:24px 22px;
  box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
}
.price-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.price-card .price-tag{
  display:inline-block;font-size:12.5px;font-weight:700;padding:4px 12px;border-radius:999px;
  color:var(--brand-dark);background:#eaf1ff;margin-bottom:12px;
}
.price-card h3{font-size:16.5px;margin-bottom:10px;}
.price-card p{font-size:14px;color:var(--ink-3);line-height:1.85;}

/* ---------- reviews ---------- */
.review{
  display:flex;flex-direction:column;gap:14px;
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:22px;
  box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
}
.review:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.review-stars{color:#ff9f1c;font-size:14px;letter-spacing:2px;}
.review-text{font-size:14.5px;color:var(--ink-2);line-height:1.9;}
.reviewer{display:flex;align-items:center;gap:12px;margin-top:auto;padding-top:4px;}
.avatar{
  width:40px;height:40px;border-radius:50%;flex:none;
  display:flex;align-items:center;justify-content:center;
  font-size:14px;font-weight:800;color:#fff;
  background:linear-gradient(135deg,#1c5cff,#00c2a8);
}
.reviewer-name{font-size:14px;font-weight:700;color:var(--ink);}
.reviewer-role{font-size:12.5px;color:var(--ink-3);}

/* ---------- cases ---------- */
.case-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;box-shadow:var(--shadow-sm);
  transition:transform .25s,box-shadow .25s;
}
.case-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.case-media{
  aspect-ratio:16/10;background:#eef4ff;
  display:flex;align-items:center;justify-content:center;padding:14px;
}
.case-media img{width:100%;height:100%;object-fit:contain;display:block;border-radius:10px;}
.case-body{padding:20px 22px 24px;}
.case-body h3{font-size:16.5px;margin-bottom:8px;}
.case-body p{font-size:14px;color:var(--ink-3);line-height:1.8;}
.gallery{
  display:grid;gap:16px;margin-top:28px;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
}
.gallery figure{
  margin:0;background:#fff;border:1px solid var(--line);border-radius:14px;
  overflow:hidden;box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
}
.gallery figure:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.gallery .shot{aspect-ratio:4/3;background:#eef4ff;display:flex;align-items:center;justify-content:center;padding:10px;}
.gallery .shot img{width:100%;height:100%;object-fit:contain;display:block;border-radius:8px;}
.gallery figcaption{
  padding:10px 14px 14px;font-size:13px;color:var(--ink-3);text-align:center;
}

/* ---------- form ---------- */
.form-panel{
  background:linear-gradient(140deg,#ffffff 0%,#f4f8ff 62%,#eefaf7 100%);
  border:1px solid rgba(28,92,255,.18);border-radius:22px;
  padding:30px;box-shadow:var(--shadow-md);
}
.form-grid{display:grid;gap:18px;grid-template-columns:1fr;}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:14px;font-weight:600;color:var(--ink);}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;font-size:15px;font-family:inherit;color:var(--ink);
  background:#fff;border:1px solid var(--line);border-radius:12px;
  transition:border-color .2s,box-shadow .2s;
}
.field textarea{resize:vertical;min-height:120px;line-height:1.7;}
.field input::placeholder,.field textarea::placeholder{color:#a3aac2;}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--brand);box-shadow:0 0 0 4px rgba(28,92,255,.12);
}
.form-foot{display:flex;flex-wrap:wrap;align-items:center;gap:16px;margin-top:22px;}
.form-tip{font-size:13px;color:var(--ink-3);}

/* ---------- faq ---------- */
.faq-list{max-width:900px;margin:0 auto;}
.faq-item{
  background:#fff;border:1px solid var(--line);border-radius:14px;
  margin-bottom:12px;overflow:hidden;box-shadow:var(--shadow-sm);
  transition:border-color .2s,box-shadow .2s;
}
.faq-item.open{border-color:rgba(28,92,255,.32);box-shadow:var(--shadow-md);}
.faq-q{
  width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:18px 20px;background:none;border:none;cursor:pointer;
  font-family:inherit;font-size:15.5px;font-weight:600;color:var(--ink);text-align:left;
}
.faq-icon{
  flex:none;width:26px;height:26px;border-radius:50%;
  display:flex;align-items:center;justify-content:center;
  font-size:16px;font-weight:700;color:var(--brand);background:#eef3ff;
  transition:transform .3s,background .3s,color .3s;
}
.faq-item.open .faq-icon{transform:rotate(45deg);background:var(--brand);color:#fff;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-a p{padding:0 20px 18px;font-size:14.5px;color:var(--ink-3);line-height:1.9;}

/* ---------- contact ---------- */
.contact-grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));}
.contact-item{
  background:#fff;border:1px solid var(--line);border-radius:16px;padding:20px 22px;
  box-shadow:var(--shadow-sm);transition:transform .25s,box-shadow .25s;
}
.contact-item:hover{transform:translateY(-4px);box-shadow:var(--shadow-md);}
.contact-item .c-label{font-size:13px;color:var(--ink-3);margin-bottom:6px;}
.contact-item .c-value{font-size:15.5px;font-weight:700;color:var(--ink);word-break:break-all;}
.contact-item a.c-value{color:var(--brand);}
.qr-card{
  margin-top:24px;display:flex;flex-wrap:wrap;align-items:center;gap:24px;
  background:#fff;border:1px solid var(--line);border-radius:18px;padding:24px;
  box-shadow:var(--shadow-sm);
}
.qr-frame{
  width:150px;flex:none;border-radius:14px;overflow:hidden;
  border:1px solid var(--line);background:#f7faff;padding:8px;
}
.qr-frame img{width:100%;height:auto;display:block;border-radius:8px;}
.qr-text h3{font-size:16px;margin-bottom:8px;}
.qr-text p{font-size:14px;color:var(--ink-3);line-height:1.85;}

/* ---------- join ---------- */
.join-panel{
  background:linear-gradient(130deg,#f2f7ff 0%,#ffffff 46%,#eefaf7 100%);
  border:1px solid rgba(28,92,255,.16);border-radius:22px;
  padding:34px;box-shadow:var(--shadow-md);
}
.join-panel h2{font-size:clamp(22px,3.2vw,30px);margin-bottom:14px;}
.join-panel > p{font-size:15px;color:var(--ink-2);line-height:1.9;max-width:820px;}
.join-grid{display:grid;gap:18px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));margin-top:26px;}
.join-grid .card{background:rgba(255,255,255,.92);}
.join-actions{margin-top:26px;display:flex;flex-wrap:wrap;gap:14px;}

/* ---------- footer ---------- */
.site-footer{
  background:#f2f6ff;
  border-top:1px solid var(--line);
  color:var(--ink);
  padding:38px 0 24px;
}
.footer-top{
  display:flex;flex-wrap:wrap;gap:26px;justify-content:space-between;align-items:flex-start;
}
.footer-brand{max-width:420px;}
.footer-brand .brand{margin-bottom:12px;}
.footer-brand p{font-size:13.5px;color:var(--ink-3);line-height:1.85;}
.footer-links h3{font-size:14px;margin-bottom:12px;color:var(--ink);}
.footer-links ul{
  list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:8px 16px;
}
.footer-links a{font-size:13.5px;color:#2c3f6e;transition:color .2s;}
.footer-links a:hover{color:var(--brand);}
.footer-bottom{
  margin-top:26px;padding-top:18px;border-top:1px solid rgba(14,19,48,.08);
  display:flex;flex-wrap:wrap;gap:10px 20px;justify-content:space-between;align-items:center;
}
.footer-bottom span,.footer-bottom a{font-size:13px;color:var(--ink-3);}
.footer-bottom a:hover{color:var(--brand);}

/* ---------- float tools ---------- */
.float-tools{
  position:fixed;right:18px;bottom:22px;z-index:120;
  display:flex;flex-direction:column;align-items:flex-end;gap:12px;
}
.kefu-panel{
  width:220px;background:#fff;border:1px solid var(--line);border-radius:16px;
  padding:16px;box-shadow:var(--shadow-md);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .28s,transform .28s,visibility .28s;
}
.kefu-panel.show{opacity:1;visibility:visible;transform:translateY(0);}
.kefu-panel img{width:100%;height:auto;display:block;border-radius:10px;margin-bottom:10px;}
.kefu-panel p{font-size:12.5px;color:var(--ink-2);line-height:1.8;}
.kefu-panel .k-title{font-size:13px;font-weight:700;color:var(--ink);margin-bottom:8px;}
.float-btn{
  width:54px;height:54px;border-radius:50%;border:none;cursor:pointer;
  color:#fff;font-size:13px;font-weight:700;font-family:inherit;
  background:linear-gradient(135deg,#1c5cff,#00c2a8);
  box-shadow:0 12px 26px rgba(28,92,255,.34);
  transition:transform .22s,box-shadow .22s;
}
.float-btn:hover{transform:translateY(-3px);box-shadow:0 18px 32px rgba(28,92,255,.40);}
.to-top{
  width:44px;height:44px;border-radius:50%;cursor:pointer;font-size:18px;font-weight:700;
  color:var(--brand);background:#fff;border:1px solid rgba(28,92,255,.28);
  box-shadow:var(--shadow-sm);
  opacity:0;visibility:hidden;transform:translateY(10px);
  transition:opacity .25s,transform .25s,visibility .25s;
}
.to-top.show{opacity:1;visibility:visible;transform:translateY(0);}

/* ---------- reveal ---------- */
.js .reveal{opacity:0;transform:translateY(22px);transition:opacity .65s ease,transform .65s ease;}
.js .reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (min-width:760px){
  .form-grid{grid-template-columns:1fr 1fr;}
  .form-grid .full{grid-column:1 / -1;}
  .score-band{flex-direction:row;align-items:center;gap:36px;padding:34px 38px;}
  .score-main{text-align:left;padding:0 28px 0 0;border-right:1px solid rgba(14,19,48,.08);min-width:190px;}
  .score-points{grid-template-columns:1fr 1fr;}
}
@media (min-width:900px){
  .hero-metrics{grid-template-columns:repeat(4,1fr);}
}
@media (max-width:1024px){
  .nav-toggle{display:flex;}
  .nav-links{
    display:none;position:absolute;top:100%;left:0;right:0;
    flex-direction:column;align-items:stretch;gap:0;
    background:#fff;border-bottom:1px solid var(--line);
    padding:10px 16px 16px;box-shadow:0 20px 34px rgba(18,48,120,.12);
  }
  .nav-links.open{display:flex;}
  .nav-links a{padding:12px 14px;font-size:15px;border-radius:10px;}
  .site-header{position:sticky;}
}
@media (max-width:560px){
  .section{padding:56px 0;}
  .hero{padding:56px 0 52px;}
  .orb-1,.orb-2,.orb-3{display:none;}
  .nav-actions .btn-sm{display:none;}
  .score-value{font-size:44px;}
  .form-panel,.join-panel{padding:22px;}
  .qr-card{flex-direction:column;align-items:flex-start;}
  .float-tools{right:12px;bottom:16px;}
  .kefu-panel{width:200px;}
}
@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  .js .reveal{opacity:1;transform:none;transition:none;}
  .hero-orb{animation:none;}
  *{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}