*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;scroll-padding-top:92px;}
body{
  margin:0;
  font-family:"PingFang SC","Hiragino Sans GB","Microsoft YaHei",system-ui,-apple-system,"Segoe UI",sans-serif;
  font-size:16px;
  line-height:1.7;
  color:#1c2138;
  background-color:#fffcf7;
  background-image:
    radial-gradient(880px 520px at 6% -8%, #ffe6d5 0%, rgba(255,230,213,0) 62%),
    radial-gradient(780px 480px at 98% 2%, #d9f6f1 0%, rgba(217,246,241,0) 64%),
    radial-gradient(900px 560px at 50% 28%, #eaecff 0%, rgba(234,236,255,0) 66%),
    radial-gradient(700px 460px at 10% 78%, #fff1f6 0%, rgba(255,241,246,0) 62%),
    radial-gradient(760px 500px at 92% 92%, #e7f4ff 0%, rgba(231,244,255,0) 64%);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{margin:0;color:#1c2138;}
p{margin:0;}
a{color:#5f47f0;}
img{display:block;}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 20px;}

/* ---------- header ---------- */
.site-header{
  position:sticky;top:0;z-index:70;
  background:rgba(255,252,247,.88);
  -webkit-backdrop-filter:saturate(160%) blur(12px);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid rgba(28,33,56,.08);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:72px;}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:#1c2138;font-weight:800;font-size:1.02rem;flex:0 0 auto;}
.ai-page-logo{display:block;max-height:34px;max-width:150px;width:auto;border-radius:6px;}
.brand-text{white-space:nowrap;}
.site-nav{display:flex;align-items:center;min-width:0;}
.nav-links{display:flex;align-items:center;gap:0;list-style:none;margin:0;padding:0;}
.nav-links li{margin:0;}
.nav-links a{display:block;padding:8px 10px;border-radius:999px;color:#5b6280;text-decoration:none;font-size:.92rem;font-weight:600;transition:color .25s ease,background .25s ease;}
.nav-links a:hover{color:#1c2138;background:rgba(123,97,255,.10);}
.header-cta{flex:0 0 auto;padding:10px 20px;font-size:.88rem;}
.nav-toggle{display:none;width:44px;height:40px;border-radius:12px;border:1px solid rgba(28,33,56,.14);background:#fff;cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:4px;padding:0;}
.nav-toggle span{display:block;width:18px;height:2px;border-radius:2px;background:#1c2138;transition:transform .3s ease,opacity .3s 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);}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:13px 26px;border-radius:999px;border:1px solid transparent;
  font-family:inherit;font-size:.95rem;font-weight:700;text-decoration:none;cursor:pointer;
  transition:transform .25s ease,box-shadow .25s ease,background .25s ease,color .25s ease,border-color .25s ease;
}
.btn-primary{background:linear-gradient(135deg,#ff7a59 0%,#ff5d8f 52%,#7b61ff 100%);color:#fff;box-shadow:0 12px 26px rgba(255,93,143,.30);}
.btn-primary:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(255,93,143,.38);}
.btn-primary:active{transform:translateY(0);}
.btn-ghost{background:#fff;color:#1c2138;border-color:rgba(28,33,56,.14);box-shadow:0 8px 20px rgba(28,33,56,.07);}
.btn-ghost:hover{transform:translateY(-3px);color:#5f47f0;border-color:rgba(123,97,255,.45);}

/* ---------- hero ---------- */
.hero{position:relative;overflow:hidden;padding:66px 0 74px;}
.hero::before{content:"";position:absolute;top:-150px;left:-130px;width:430px;height:430px;border-radius:50%;background:radial-gradient(circle at 35% 35%,rgba(255,122,89,.38),rgba(255,122,89,0) 70%);animation:floatA 15s ease-in-out infinite;}
.hero::after{content:"";position:absolute;right:-110px;bottom:-170px;width:400px;height:400px;border-radius:50%;background:radial-gradient(circle at 60% 40%,rgba(123,97,255,.32),rgba(123,97,255,0) 70%);animation:floatB 17s ease-in-out infinite;}
@keyframes floatA{0%,100%{transform:translate(0,0);}50%{transform:translate(26px,28px);}}
@keyframes floatB{0%,100%{transform:translate(0,0);}50%{transform:translate(-26px,-22px);}}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,.9fr);gap:48px;align-items:center;}
.hero-copy .eyebrow{margin-bottom:18px;}
.hero h1{font-size:clamp(1.85rem,4vw,2.85rem);line-height:1.28;letter-spacing:-.02em;margin:0 0 18px;}
.hero-desc{color:#4d5473;font-size:1.02rem;max-width:600px;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-bottom:22px;}
.hero-tags{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin:0;padding:0;}
.hero-tags li{padding:6px 14px;border-radius:999px;background:rgba(255,255,255,.86);border:1px solid rgba(28,33,56,.09);font-size:.82rem;font-weight:600;color:#4d5473;box-shadow:0 4px 12px rgba(28,33,56,.05);}
.hero-panel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;}
.stat-card{position:relative;overflow:hidden;background:#fff;border:1px solid rgba(28,33,56,.09);border-radius:16px;padding:20px 18px;box-shadow:0 10px 26px rgba(28,33,56,.07);transition:transform .3s ease,box-shadow .3s ease;}
.stat-card::before{content:"";position:absolute;top:0;bottom:0;left:0;width:4px;background:var(--accent);}
.stat-card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(28,33,56,.12);}
.stat-num{display:block;font-size:1.7rem;font-weight:800;line-height:1.2;letter-spacing:-.02em;color:var(--accent);}
.stat-label{display:block;margin-top:4px;font-size:.84rem;color:#5b6280;}

/* ---------- section ---------- */
.section{padding:70px 0;}
.band{background:linear-gradient(180deg,rgba(255,255,255,.80),rgba(255,255,255,.42));border-top:1px solid rgba(28,33,56,.06);border-bottom:1px solid rgba(28,33,56,.06);}
.section-head{max-width:800px;margin-bottom:34px;}
.eyebrow{display:inline-block;margin:0;padding:6px 14px;border-radius:999px;background:#fff;border:1px solid rgba(28,33,56,.10);color:#5f47f0;font-size:.78rem;font-weight:800;letter-spacing:.1em;box-shadow:0 6px 16px rgba(28,33,56,.06);}
.section-head h2{font-size:clamp(1.45rem,2.5vw,2.05rem);line-height:1.35;letter-spacing:-.01em;margin:14px 0 10px;}
.section-lead{color:#5b6280;font-size:1rem;}

/* ---------- cards / grids ---------- */
.card{background:#fff;border:1px solid rgba(28,33,56,.10);border-radius:18px;padding:22px;box-shadow:0 8px 22px rgba(28,33,56,.06);transition:transform .3s ease,box-shadow .3s ease,border-color .3s ease;}
.card:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(28,33,56,.11);border-color:rgba(123,97,255,.30);}
.card h3{font-size:1.02rem;margin-bottom:8px;}
.card p{color:#5b6280;font-size:.92rem;}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(248px,1fr));gap:18px;}
.svc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(252px,1fr));gap:18px;}
.svc-card{position:relative;padding-top:24px;}
.svc-card::before{content:"";position:absolute;top:0;left:22px;width:34px;height:4px;border-radius:4px;background:var(--dot,#ff7a59);}
.zone-title{font-size:1.02rem;margin:34px 0 14px;}
.tag-cloud{display:flex;flex-wrap:wrap;gap:10px;}
.tag{display:inline-block;padding:8px 16px;border-radius:999px;background:#fff;border:1px solid rgba(28,33,56,.10);color:#3c4460;font-size:.86rem;font-weight:600;box-shadow:0 4px 12px rgba(28,33,56,.05);transition:transform .25s ease,background .25s ease,color .25s ease,border-color .25s ease;}
.tag:hover{transform:translateY(-2px);background:linear-gradient(135deg,#7b61ff,#2f80ed);border-color:transparent;color:#fff;}

/* ---------- media ---------- */
.media-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;}
.media-frame{margin:0;padding:10px;background:#fff;border:1px solid rgba(28,33,56,.09);border-radius:16px;box-shadow:0 10px 26px rgba(28,33,56,.08);aspect-ratio:4/3;overflow:hidden;}
.media-frame img{width:100%;height:100%;object-fit:contain;border-radius:10px;transition:transform .4s ease;}
.media-frame:hover img{transform:scale(1.03);}
.note-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:22px;}

/* ---------- steps ---------- */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:16px;counter-reset:step;}
.step{position:relative;background:#fff;border:1px solid rgba(28,33,56,.10);border-radius:16px;padding:24px 20px 20px;box-shadow:0 8px 22px rgba(28,33,56,.06);transition:transform .3s ease,box-shadow .3s ease;}
.step::before{counter-increment:step;content:counter(step);position:absolute;top:-14px;left:20px;width:32px;height:32px;border-radius:10px;display:flex;align-items:center;justify-content:center;font-size:.9rem;font-weight:800;color:#fff;background:linear-gradient(135deg,#ff7a59,#7b61ff);box-shadow:0 8px 18px rgba(123,97,255,.28);}
.step:hover{transform:translateY(-4px);box-shadow:0 16px 34px rgba(28,33,56,.11);}
.step h3{font-size:.98rem;margin:8px 0 6px;}
.step p{color:#5b6280;font-size:.88rem;}

/* ---------- table ---------- */
.table-wrap{overflow-x:auto;background:#fff;border:1px solid rgba(28,33,56,.10);border-radius:18px;box-shadow:0 10px 26px rgba(28,33,56,.07);}
table{width:100%;min-width:660px;border-collapse:collapse;}
thead th{background:linear-gradient(135deg,#fff2ea,#eef0ff);color:#1c2138;font-size:.9rem;font-weight:800;text-align:left;padding:15px 18px;border-bottom:1px solid rgba(28,33,56,.10);}
tbody td{padding:14px 18px;font-size:.92rem;color:#4d5473;border-bottom:1px solid rgba(28,33,56,.08);vertical-align:top;}
tbody td:first-child{font-weight:700;color:#1c2138;width:26%;}
tbody td:nth-child(2){color:#2b6a5f;font-weight:600;}
tbody tr:last-child td{border-bottom:0;}
tbody tr:hover{background:#fdfbff;}
.score-card{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px;background:linear-gradient(135deg,#fff4ec 0%,#f1f0ff 100%);border:1px solid rgba(123,97,255,.22);border-radius:20px;padding:26px 28px;margin-bottom:22px;box-shadow:0 12px 30px rgba(123,97,255,.12);}
.score-stars{font-size:1.5rem;letter-spacing:.18em;color:#f5a524;line-height:1.2;}
.score-title{margin-top:6px;font-weight:800;color:#1c2138;}
.score-sub{margin-top:4px;font-size:.86rem;color:#5b6280;}
.score-num{font-size:2.6rem;font-weight:800;line-height:1;color:#5f47f0;letter-spacing:-.03em;}
.score-num span{font-size:.95rem;font-weight:600;color:#5b6280;letter-spacing:0;margin-left:6px;}

/* ---------- reviews ---------- */
.review-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px;}
.review-head{display:flex;align-items:center;gap:12px;margin-bottom:12px;}
.avatar{display:flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:14px;font-weight:800;font-size:1rem;flex:0 0 auto;}
.review-name{font-weight:800;font-size:.95rem;line-height:1.3;}
.review-role{font-size:.8rem;color:#7a819b;}

/* ---------- pricing ---------- */
.price-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;}
.price-card{position:relative;}
.price-card h3{color:#5f47f0;}
.price-note{margin-top:18px;font-size:.85rem;color:#7a819b;}

/* ---------- form ---------- */
.contact-layout{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(0,1fr);gap:24px;align-items:start;}
.form-card{background:#fff;border:1px solid rgba(28,33,56,.10);border-radius:20px;padding:26px;box-shadow:0 12px 30px rgba(28,33,56,.08);}
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;}
.field{display:flex;flex-direction:column;gap:6px;font-size:.88rem;font-weight:700;color:#3c4460;}
.field.full{grid-column:1 / -1;}
.field input,.field select,.field textarea{
  width:100%;padding:12px 14px;border-radius:12px;border:1px solid rgba(28,33,56,.16);
  background:#fff;color:#1c2138;font-family:inherit;font-size:.94rem;font-weight:400;
  transition:border-color .25s ease,box-shadow .25s ease;
}
.field input::placeholder,.field textarea::placeholder{color:#9aa1b8;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:#7b61ff;box-shadow:0 0 0 4px rgba(123,97,255,.13);}
.field textarea{resize:vertical;min-height:110px;}
.form-submit{margin-top:18px;}
.contact-card{background:#fff;border:1px solid rgba(28,33,56,.10);border-radius:20px;padding:24px;box-shadow:0 12px 30px rgba(28,33,56,.08);}
.contact-card h3{font-size:1.02rem;margin-bottom:14px;}
.contact-list{list-style:none;margin:0;padding:0;display:grid;gap:10px;}
.contact-list li{display:flex;align-items:center;justify-content:space-between;gap:12px;padding-bottom:10px;border-bottom:1px dashed rgba(28,33,56,.12);font-size:.9rem;}
.contact-list li:last-child{border-bottom:0;padding-bottom:0;}
.contact-list span{color:#7a819b;flex:0 0 auto;}
.contact-list strong{color:#1c2138;font-weight:700;word-break:break-all;text-align:right;}

/* ---------- faq ---------- */
.faq-list{display:grid;gap:12px;}
.faq-item{background:#fff;border:1px solid rgba(28,33,56,.10);border-radius:16px;box-shadow:0 8px 22px rgba(28,33,56,.06);overflow:hidden;transition:border-color .25s ease,box-shadow .25s ease;}
.faq-item.open{border-color:rgba(123,97,255,.35);box-shadow:0 14px 32px rgba(123,97,255,.12);}
.faq-q{width:100%;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 20px;border:0;background:transparent;font-family:inherit;font-size:.96rem;font-weight:700;color:#1c2138;text-align:left;cursor:pointer;}
.faq-icon{position:relative;flex:0 0 auto;width:20px;height:20px;border-radius:50%;background:rgba(123,97,255,.12);}
.faq-icon::before,.faq-icon::after{content:"";position:absolute;top:50%;left:50%;background:#5f47f0;border-radius:2px;transform:translate(-50%,-50%);transition:transform .3s ease,opacity .3s ease;}
.faq-icon::before{width:10px;height:2px;}
.faq-icon::after{width:2px;height:10px;}
.faq-item.open .faq-icon::after{transform:translate(-50%,-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .34s ease;}
.faq-a p{padding:0 20px 18px;color:#5b6280;font-size:.92rem;}

/* ---------- articles ---------- */
.article-list{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 30px;}
.article-list li{border-bottom:1px dashed rgba(28,33,56,.12);}
.article-list a{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:14px 0;color:#1c2138;text-decoration:none;font-weight:600;font-size:.94rem;transition:color .25s ease;}
.article-list a::after{content:"→";color:#5f47f0;font-weight:700;flex:0 0 auto;transition:transform .25s ease;}
.article-list a:hover{color:#5f47f0;}
.article-list a:hover::after{transform:translateX(4px);}

/* ---------- join ---------- */
.join-card{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,.8fr);gap:26px;align-items:center;background:linear-gradient(135deg,#fff3ec 0%,#eef7ff 55%,#f2eeff 100%);border:1px solid rgba(123,97,255,.20);border-radius:22px;padding:32px;box-shadow:0 16px 38px rgba(123,97,255,.13);}
.join-card h2{font-size:clamp(1.35rem,2.3vw,1.85rem);line-height:1.35;margin-bottom:12px;}
.join-card p{color:#4d5473;font-size:.96rem;}
.join-list{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:8px;}
.join-list li{position:relative;padding-left:20px;color:#4d5473;font-size:.92rem;}
.join-list li::before{content:"";position:absolute;left:0;top:9px;width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,#ff7a59,#7b61ff);}
.join-action{display:flex;flex-direction:column;align-items:flex-start;gap:12px;}
.join-action .btn{width:100%;max-width:260px;}

/* ---------- footer ---------- */
.site-footer{background:#fff5ee;color:#2a3050;border-top:1px solid rgba(28,33,56,.10);padding:46px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1.4fr;gap:32px;}
.footer-name{font-size:1.05rem;font-weight:800;color:#1c2138;margin-bottom:10px;}
.footer-desc{font-size:.88rem;color:#5b6280;max-width:340px;}
.footer-site{margin-top:12px;font-size:.88rem;}
.footer-site a{color:#5f47f0;text-decoration:none;font-weight:700;}
.footer-site a:hover{text-decoration:underline;}
.footer-col h3{font-size:.95rem;margin-bottom:12px;color:#1c2138;}
.footer-col ul{list-style:none;margin:0;padding:0;display:grid;gap:8px;font-size:.86rem;color:#5b6280;}
.footer-col ul a{color:#3c4460;text-decoration:none;transition:color .25s ease;}
.footer-col ul a:hover{color:#5f47f0;}
.friend-links{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px 16px;}
.footer-bottom{margin-top:34px;padding:16px 0 22px;border-top:1px solid rgba(28,33,56,.10);display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;font-size:.82rem;color:#7a819b;}

/* ---------- float tools ---------- */
.float-tools{position:fixed;right:18px;bottom:18px;z-index:90;display:flex;flex-direction:column;align-items:flex-end;gap:10px;}
.support-btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:12px 18px;border-radius:999px;border:0;cursor:pointer;font-family:inherit;font-size:.88rem;font-weight:700;color:#fff;background:linear-gradient(135deg,#ff7a59,#7b61ff);box-shadow:0 12px 26px rgba(123,97,255,.32);transition:transform .25s ease,box-shadow .25s ease;}
.support-btn:hover{transform:translateY(-3px);box-shadow:0 18px 34px rgba(123,97,255,.40);}
.support-panel{position:absolute;right:0;bottom:calc(100% + 10px);width:230px;background:#fff;border:1px solid rgba(28,33,56,.12);border-radius:16px;padding:16px;box-shadow:0 20px 44px rgba(28,33,56,.18);display:none;}
.support-panel.open{display:block;animation:panelIn .28s ease;}
@keyframes panelIn{from{opacity:0;transform:translateY(8px);}to{opacity:1;transform:translateY(0);}}
.support-title{font-size:.9rem;font-weight:800;color:#1c2138;margin-bottom:10px;}
.qr-box{width:100%;border-radius:12px;overflow:hidden;border:1px solid rgba(28,33,56,.10);background:#fff;padding:8px;margin-bottom:10px;}
.qr-box img{width:100%;height:auto;border-radius:8px;}
.support-panel ul{list-style:none;margin:0;padding:0;display:grid;gap:6px;font-size:.82rem;color:#5b6280;}
.back-top{width:44px;height:44px;border-radius:50%;border:1px solid rgba(28,33,56,.12);background:#fff;color:#5f47f0;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:0 10px 24px rgba(28,33,56,.14);opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .3s ease,transform .3s ease,visibility .3s ease;}
.back-top.show{opacity:1;visibility:visible;transform:translateY(0);}
.back-top:hover{color:#ff5d8f;}

/* ---------- reveal ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease,transform .7s ease;}
.reveal.in{opacity:1;transform:none;}

/* ---------- responsive ---------- */
@media (max-width:980px){
  .nav-toggle{display:flex;}
  .header-cta{display:none;}
  .site-nav{position:absolute;top:100%;left:0;right:0;display:none;background:#fff;border-bottom:1px solid rgba(28,33,56,.10);box-shadow:0 18px 34px rgba(28,33,56,.13);padding:8px 0 14px;}
  .site-nav.open{display:block;}
  .nav-links{flex-direction:column;align-items:stretch;padding:0 20px;}
  .nav-links a{padding:11px 6px;border-radius:10px;font-size:.95rem;}
  .hero-inner{grid-template-columns:1fr;gap:34px;}
  .contact-layout{grid-template-columns:1fr;}
  .join-card{grid-template-columns:1fr;padding:26px;}
  .footer-grid{grid-template-columns:1fr 1fr;}
}
@media (max-width:720px){
  html{scroll-padding-top:84px;}
  .section{padding:52px 0;}
  .hero{padding:48px 0 56px;}
  .form-grid{grid-template-columns:1fr;}
  .article-list{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr;}
  .friend-links{grid-template-columns:repeat(2,minmax(0,1fr));}
  .score-card{padding:22px;}
  .score-num{font-size:2.1rem;}
  .footer-bottom{flex-direction:column;align-items:flex-start;}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto;}
  .reveal{opacity:1;transform:none;transition:none;}
  .hero::before,.hero::after{animation:none;}
}

.reveal{opacity:1;transform:none;}